US20070135802A1 - Method of lifting diseased part, tissue lifting system, and indwelling tool - Google Patents
Method of lifting diseased part, tissue lifting system, and indwelling tool Download PDFInfo
- Publication number
- US20070135802A1 US20070135802A1 US11/300,174 US30017405A US2007135802A1 US 20070135802 A1 US20070135802 A1 US 20070135802A1 US 30017405 A US30017405 A US 30017405A US 2007135802 A1 US2007135802 A1 US 2007135802A1
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- United States
- Prior art keywords
- magnetic body
- magnetic
- luminal organ
- indwelling tool
- indwelling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0281—Abdominal wall lifters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/08—Wound clamps or clips, i.e. not or only partly penetrating the tissue ; Devices for bringing together the edges of a wound
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00876—Material properties magnetic
Definitions
- the present invention relates to a method of lifting a diseased part used in treatment performed in a living body, an indwelling tool used for lifting a diseased part, and a tissue lifting system including the indwelling tool.
- a diseased part produced in a body of a patient is generally removed or cauterized.
- the body of the patient may be opened in a surgical operation, or an endoscope is inserted from the mouth or the anus of the patient.
- Japanese Unexamined Patent Application, First Publication No. 2004-105247 shows an example of a method of removing a diseased part produced in a luminal organ by using an endoscope. In the method, first, an overtube is inserted into a diseased part of a luminal organ, and then an endoscope is inserted through the overtube.
- a clip attachment tool is inserted through a channel of the endoscope, and a clip at the head of the clip attachment tool is attached to the diseased part.
- the endoscope is once pulled out from the overtube, and a magnetic anchor is inserted from the head of the endoscope through the channel.
- the endoscope is again inserted into the overtube, so as to engage the magnetic anchor with the clip.
- a magnetic induction member is disposed outside the body of the patient, so that the magnetic anchor is attracted due to magnetic force by the magnetic induction member.
- the diseased part is pulled via the clip and lifted in the luminal organ. The lifted diseased part is removed using a cutting and removing tool inserted into the channel of the endoscope.
- a method of lifting a diseased part includes the steps of providing an indwelling tool having a magnetic body at the inside of a luminal organ by inserting the indwelling tool into a working channel which is inserted from a natural opening of a living body to the luminal organ, in a manner such that an axis along a length of the magnetic body is arranged substantially parallel to a length direction of the working channel; disposing the indwelling tool in a vicinity of the diseased part produced in the luminal organ; applying a magnetic field to the magnetic body by using a magnetic field generating device which is provided at the outside of the luminal organ, so as to attract the magnetic body and make a side face of the magnetic body along the axis thereof push against a tissue in the vicinity of the diseased part; and lifting a tissue around a position of the indwelling tool, which includes the diseased part, by applying a magnetic force to the magnetic body by using the magnetic field generating device.
- a tissue lifting system includes an indwelling tool having an anchor fit to the inside of a luminal organ of a living body, and a magnetic body having an elongated shape, which is divided into two magnetized polar parts on either end along a longitudinal axis of the magnetic body; and a magnetic force generating device which is provided at the outside of the luminal organ and has a magnetic body having two poles arranged on an end thereof toward the luminal organ, wherein said two poles correspond to said either end of the magnetic body of the indwelling tool.
- an indwelling tool includes an anchor fit to the inside of a luminal organ; and a soft magnetic body which is magnetized when being exposed in a magnetic field, wherein the soft magnetic body has a side face along a longitudinal axis of the soft magnetic body, the side face being pushed against a tissue inside the luminal organ, and a non-magnetic material is attached to either end of the magnetic body along the longitudinal axis.
- FIG. 1 is a partially sectional view showing the structure of an indwelling tool and an indwelling device as an embodiment in accordance with the present invention.
- FIG. 2 is a sectional view along line A-A in FIG. 1 .
- FIG. 3 is an enlarged view of a magnetic body.
- FIG. 4 is a perspective view showing magnetic forceps.
- FIG. 5 is a diagram showing a state in which an endoscope is inserted into a luminal organ.
- FIG. 6 is a diagram showing a state in which an indwelling tool is made to protrude from an insertion pipe and a magnetic body is hung from a clip.
- FIG. 7 is a diagram showing the indwelling tool is anchored.
- FIG. 8 is a diagram showing a step of inserting the magnetic forceps from an abdominal wall side.
- FIG. 9 is a diagram showing a state in which a tissue including a diseased part is lifted.
- FIG. 10 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps.
- FIG. 11 is a diagram showing the structure of an indwelling tool.
- FIG. 12 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps.
- FIG. 13 is a diagram showing the structure of an indwelling tool.
- FIG. 14 is an enlarged and partially-broken view of a head portion of the magnetic forceps.
- FIG. 15 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps.
- FIG. 16 is a diagram showing the structure of an indwelling tool.
- FIG. 17 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps.
- FIG. 1 shows an indwelling tool and an indwelling device used in a first embodiment.
- the indwelling device 1 has an operation section 2 handled by an operator. At a base end of a main body 3 of the operation section 2 , a ring 4 for a finger of the operator is provided.
- a slider 5 is attached to the main body 3 in a manner such that the slider 5 can freely slide. The slider 5 is forced toward an end by a compressive-type coil spring 6 .
- a pipe 7 is connected to the slider 5 , and a wire is inserted through the pipe 7 . This wire passes through a coil sheath 9 which is fixed on the head side of the main body 3 , in a manner such that the wire can be freely advanced or withdrawn.
- the coil sheath 9 passes through an insertion pipe 10 in a manner such that the coil sheath 9 can freely advance or withdraw.
- the insertion pipe 10 is made of plastic such as fluororesin or polyethylene resin.
- a grip 11 is provided, which is held by the operator.
- the insertion pipe 10 and the coil sheath 9 are each long and flexible, and are inserted into a working channel of an endoscope (not shown).
- the wire 8 extending through the coil sheath 9 is fastened to the slider 5 .
- a connection plate 16 for an indwelling tool 15 is welded to the head of the wire 8 .
- the indwelling tool 15 consists of the connection plate 16 , a tube 17 , a clip (or anchor) 18 and a magnetic body 20 .
- the connection plate 16 is welded to the wire 8 , so that the connection plate 16 passes through the tube 17 and is pulled out from the head of the tube 17 .
- a hook 19 is formed at the head of the connection plate 16 , and a loop portion 21 of the clip 18 is engaged with the hook 19 .
- the clip 18 is made of a thin and long member, a center portion of which is twisted so as to form the loop portion 21 . In a natural state, a pair of arms 22 are open toward the head side.
- the magnetic body 20 has a main body 25 whose base end forms a holding portion 26 having a smaller outer diameter.
- the outer diameter of the main body 25 is larger than the inner diameter of the insertion pipe 10 , and substantially the same as the outer diameter of the insertion pipe 10 .
- the holding portion 26 is loosely fit to the inner periphery of the insertion pipe 10 by press fitting or the like.
- the (longitudinal) axis of the magnetic body 20 is sufficiently longer than the diameter thereof.
- the axis of the magnetic body 20 substantially coincides with the length direction of a head portion of the indwelling device 1 .
- a magnetic body (or material) is made either of a soft magnetic body or a hard magnetic body. In the present embodiment, the magnetic body 20 is made of a hard magnetic material.
- the magnetic body 20 is divided into two magnetized polar parts with respect to a plane (as a boundary) positioned parallel to the axis of the magnetic body 20 : one is a part 20 A as an N pole, and the other is a part 20 B as an S pole.
- a boundary line L 1 between the poles matches the position of the axis of the magnetic body 20 ; however, the boundary line L 1 may be offset from the position of the axis of the magnetic body 20 .
- the holding portion 26 has a through hole 27 arranged substantially perpendicularly to the axis of the holding portion 26 , wherein a groove 28 , which includes the opening of the through hole 27 , is formed toward the base end of the holding portion 26 .
- a wire 29 is inserted through the through hole 27 and passes through the groove 28 , and further passes inside the loop portion 21 of the clip 18 , so as to form a circular shape.
- FIG. 4 shows magnetic forceps used in the present embodiment.
- Magnetic forceps 30 as a magnetic force generating device have a pipe-shaped insertion portion 31 whose head portion is closed by a cover 31 A.
- a pusher rod 31 B is inserted into the insertion portion 31 , and a magnet 32 is fastened to the head of the pusher rod 31 B.
- an operation section 33 is provided at the base end of the insertion portion 31 .
- the magnet 32 in the insertion portion 31 can be approached toward or withdrawn from the cover 31 A by operating a lever 33 A of the operation section 33 .
- the insertion portion 31 passes through a cylindrical sheath 34 made of a hard material.
- an endoscope 41 is inserted from a natural opening (e.g., a mouth, an anus, a nose, or an ear) of a living body into a luminal organ W 1 .
- the inside of the luminal organ W 1 is observed using an illumination device 42 and an observation device 43 which are provided at the head of the endoscope 41 , so as to confirm a diseased part W 2 produced inside the luminal organ W 1 .
- the indwelling device 1 to which the indwelling tool 15 (used first) is attached, is inserted through a working channel 44 of the endoscope 41 .
- the head of the indwelling device 1 is inserted along the axis (i.e., the length) of the working channel 44 . Therefore, the magnetic body 20 of the indwelling tool 15 is inserted in a manner such that the axis of the magnetic body 20 is in parallel with the axes of the working channel 44 and the endoscope 41 .
- the grip 11 (shown in FIG. 1 ) of the indwelling device 1 is held so as to fix the insertion portion 10 and push the operating section 2 , so that the coil sheath 9 and the indwelling tool 15 protrude from the head opening of the insertion pipe 10 .
- the clip 18 is directed to a tissue in the vicinity of the diseased part W 2 of the luminal organ W 1 , so as to secure a specific distance between the diseased part W 2 and the clip 18 .
- the clip 18 proceeds together with the coil sheath 9 so as to push out the magnetic body 20 from the insertion pipe 10 .
- the magnetic body 20 and the clip 18 are coupled with each other via the wire 29 ; thus, the magnetic body 20 does not fall.
- the clip 18 is directed to a tissue in the vicinity of the diseased part W 2 of the luminal organ W 1 , so as to secure a specific distance between the diseased part W 2 and the clip 18 .
- the wire 8 pulls the connection plate 16 , and the loop portion 21 is drawn into an inner hole 17 A of the tube 17 , so that the pair of arms 22 open. While the arms 22 are open, the clip 18 is pushed onto a tissue at the indwelling position.
- the loop portion 21 is drawn into the tube 17 , and the arms 22 are pushed onto an end of the tube 17 , so that the clip 18 closes and a living tissue is clipped between the arms 22 of the clip 18 .
- the endoscope 41 is pulled out from the luminal organ W 1 .
- two holes are formed in an abdominal wall W 4 , the positions of the holes being close to the diseased part W 2 , and a forceps port W 5 is inserted into each hole.
- the magnetic forceps 30 are inserted into the first forceps port W 5 , and cutting forceps 50 are inserted into the second forceps port W 5 .
- the lever 33 A of the operation section 33 of the magnetic forceps 30 (see FIG. 4 ) is pulled so as to make the magnet 32 approach the cover 31 A on the head side.
- the magnetic body 20 is magnetized and is attracted so that the magnetic body 20 contacts an inner wall of the luminal organ W 1 in a manner such that an outer peripheral face 25 A as a side face of the main body 25 along the axis thereof faces the magnet 32 .
- FIG. 9 due to a magnetic field generated by the magnet 32 of the magnetic forceps 30 , the magnetic body 20 is magnetized and is attracted so that the magnetic body 20 contacts an inner wall of the luminal organ W 1 in a manner such that an outer peripheral face 25 A as a side face of the main body 25 along the axis thereof faces the magnet 32 .
- the magnetic body 20 is directed in correspondence to the magnetic pole of the magnet 32 of the magnetic forceps 30 .
- the side face 25 A on the part 20 B side contacts the inner wall of the luminal organ W 1 .
- the indwelling tool 15 moves toward the magnetic forceps 30 .
- a tissue including the diseased part W 2 in the vicinity of the indwelling tool 15 is also attracted toward the magnetic forceps 30 .
- the tissue including the diseased part W 2 protrudes toward the abdominal wall W 4 .
- the position of the tissue including the diseased part W 2 is offset from its natural position toward the abdominal wall W 4 (i.e., the tissue is lifted to the abdominal wall W 4 side).
- the cutting forceps 50 are then inserted into the second forceps port W 5 , so as to cut a peripheral line (see a dashed line in FIG. 9 ) around the position of the indwelling tool 15 and to remove a bent portion of the luminal organ W 1 .
- the isolated tissue is extracted from the second forceps port W 5 , and the remaining parts of the luminal organ W 1 are seamed together.
- the indwelling tool 15 having the magnetic body 20 is made to indwell in the vicinity of the diseased part W 2 . Therefore, when the magnetic forceps 30 are made to approach from the outside of the luminal organ W 1 so as to attract the magnetic body 20 , a tissue including the diseased part W 2 can be lifted toward the abdominal wall W 4 . Accordingly, it is possible to reliably isolate the diseased part W 2 from the other tissues such as other luminal organs or other kinds of organs and to easily remove the diseased part W 2 .
- the magnetic body 20 is divided into two magnetized polar parts on either side of a plane parallel to the axis of the magnetic body 20 ; thus, the outer peripheral face 25 A along the axis of the main body 25 contacts a tissue, so that a wide area can contact the tissue. Therefore, less burden is imposed on the tissue.
- FIG. 11 shows a magnetic body used in the present embodiment.
- a magnetic body unit 60 has a cylindrical main body 61 made of a soft magnetic material in the present embodiment, where a soft magnetic body (may also be called the soft magnetic material) is a magnetic body which loses its magnetic property when magnetic effects are excluded. That is, when being laid in a magnetic field, the soft magnetic body is magnetized, and when being extracted from the magnetic field (i.e., the magnetic field is removed), the soft magnetic body is substantially demagnetized.
- a material for the soft magnetic body iron, pure iron, silicon iron, Permalloy iron, or the like, are known.
- the length along the axis of the main body 61 is sufficiently larger than the diameter of the main body 61 .
- a first part 62 made of a non-magnetic material is fastened to an end 61 A along the length of the main body 61 .
- the first part 62 has the same outer diameter as that of the main body 61 , and an end of the first part 62 has a spherical shape.
- a second part 63 made of a non-magnetic material is fastened to another end 61 B of the main body 61 along the length thereof.
- the second part 63 has the same outer diameter as that of the main body 61 , and an end of the second part 63 forms the holding portion 26 having a smaller diameter.
- the through hole 27 and the groove 28 are formed, through which the wire 29 passes.
- the first part 62 and the second part 63 may be made of rubber, resin, or the like.
- the magnetic body unit 60 , the wire 29 , the clip 18 , the tube 17 , and the connection plate 16 form an indwelling tool 65 attached to the indwelling device 1 .
- the outer diameter of the main body 61 is substantially the same as that of the insertion pipe 10 .
- the holding portion 26 of the second part 63 can be loosely fit to the insertion pipe 10 .
- the indwelling device 1 to which the indwelling tool 65 is attached is inserted through the working channel 44 of the endoscope 41 to the vicinity of the diseased part W 2 .
- the axis of the magnetic body unit 60 is arranged substantially parallel to the axis (i.e., the length) of the working channel 44 and the axis of the endoscope 41 .
- the magnetic forceps 30 are made to approach from the outside of the luminal organ W 1 , so that the main body 61 of the magnetic body unit 60 is magnetized due to the magnetic field produced by the magnetic forceps 30 and is attracted toward the magnetic forceps 30 .
- the magnetic body unit 60 when the magnetic body unit 60 is arranged in a manner such that the second part 63 contacts an inner wall of the luminal organ W 1 and the magnetic body unit 60 is erected on this contact point, the magnetic body unit 60 falls with respect to a fulcrum on the second part 63 side.
- the second part 63 is made of a non-magnetic material.
- a distance L 3 measured when the magnetic body unit 60 is laid, that is, when an outer peripheral face 61 C, which is a side face of the main body 61 , faces the magnet 32 , is less than a distance L 2 , measured when the magnetic body unit 60 is erected, that is, the axis of the magnetic forceps 30 is substantially in parallel to the axis of the magnetic body unit 60 , thereby generating a strong attraction. Therefore, the magnetic body unit 60 is more stable when the outer peripheral face 61 C of the main body 61 along the axis thereof faces the magnetic forceps 30 .
- the outer peripheral face 61 C of the main body 61 pushes against an inner wall of the luminal organ W 1 , so that a portion around a center point where the indwelling tool 65 is anchored is lifted.
- the magnetic body unit 60 falls with respect to a fulcrum on the first part 62 side, so that the outer peripheral face 61 C of the main body 61 faces the magnet 32 .
- the following steps in the operation are the same as those of the first embodiment.
- both ends (i.e., the first part 62 and the second part 63 ) of the magnetic body unit 60 are each made of a non-magnetic material; thus, when the magnetic forceps 30 are made to approach, an inner wall of the luminal organ W 1 can always be pushed by the outer peripheral face 61 C of the main body 61 .
- the magnetic body unit 60 must be a long form so as to be inserted through the working channel 44 . Therefore, in comparison with the area of either end of the magnetic body unit 60 , the area of the outer peripheral face 61 C is considerably larger.
- a wider contact area can be secured when the outer peripheral face 61 C contacts a tissue, so that the position of the magnetic body unit 60 can be stable in attraction using the magnetic forceps 30 .
- less burden is imposed on the tissue pushed by the magnetic body unit 60 , and the direction of the magnetic body unit 60 can coincide with that of the magnet 32 .
- FIG. 13 shows a magnetic body used in the present embodiment.
- a magnetic body 70 has a cylindrical shape and is made of a permanent magnet.
- the magnetic body 70 has a cylindrical main body 71 having a spherical head, and a holding portion 72 having a lesser diameter, formed on the base side of the main body 71 .
- the axis along the length of the magnetic body 70 is sufficiently longer than the diameter of the main body 71 .
- the main body 71 is divided into two magnetized polar parts with respect to a line perpendicular to the axis of the main body 71 , the line being positioned near the center along the length of the main body 71 : one is a part 70 A as an N pole on the head side, and the other is a part 70 B as an S pole on the base side.
- the magnetic body 70 , the wire 29 , the clip 18 , the tube 17 , and the connection plate 16 form an indwelling tool 75 which is attached to the indwelling device 1 .
- the outer diameter of the magnetic body 70 is substantially the same as that of the insertion pipe 10 .
- the holding portion 72 can be loosely fit to the insertion pipe 10 .
- FIG. 14 shows magnetic forceps 80 as a magnetic field generating device used in the present embodiment.
- a magnet 82 is contained in an insertion portion 81 in a manner such that the magnet 82 can freely be advanced or withdrawn.
- the magnet 82 is divided into two magnetized polar parts which are arranged parallel along the length of the insertion portion 81 : one is a part 82 A as an N pole and the other is a part 82 B as an S pole.
- the indwelling device 1 to which the indwelling tool 75 is attached is inserted through the working channel 44 of the endoscope 41 to the vicinity of the diseased part W 2 .
- the axis of the magnetic body 70 is arranged substantially parallel to the axis (i.e., the length) of the working channel 44 and the axis of the endoscope 41 .
- the N pole of the magnet 82 of the magnetic forceps 80 is attracted to the part 70 B (i.e., the S pole) of the magnetic body 70
- the S pole of the magnet 82 of the magnetic forceps 80 is attracted to the part 70 A (i.e., the N pole) of the magnetic body 70 .
- a side face of the main body 71 along the axis of the magnetic body 70 that is, an outer peripheral face 71 C contacts an inner plane of the luminal organ W 1 .
- the following steps are the same as those of the first embodiment.
- the magnetic body 70 is divided into two magnetized polar parts which are arranged along the length of the magnetic body 70 ; thus, the outer peripheral face 71 C of the main body 71 of the magnetic body 70 can be reliably attracted using the magnet 82 .
- the magnetic body 70 must be a long shape so as to be inserted through the working channel 44 ; thus, the area of the outer peripheral face 71 C is considerably larger than the area of either end of the magnetic body 70 along the length thereof. Therefore, in comparison with a case in which either end of the magnetic body 70 closely contacts a tissue, a wider contact area can be secured when the outer peripheral face 71 C contacts a tissue. Accordingly, the position of the magnetic body 70 can be stable in attraction using the magnetic forceps 80 . In addition, less burden is imposed on the tissue pushed by the magnetic body 70 , and the direction of the magnetic body 70 can coincide with that of the magnet 82 .
- FIG. 16 shows a magnetic body used in the present embodiment.
- a magnetic body 90 has a long main body 91 and a holding portion 92 extending from a base portion of the main body 91 .
- the main body 91 has a plane 93 (i.e., a side face) parallel to the axis along the length of the main body, which is produced by cutting a part of a cylindrical shape.
- the head of the main body 91 has a spherical shape.
- the main body 91 is made of a permanent magnet and is divided into N and S polar parts which are arranged parallel to the plane 93 .
- a part 91 A on the plane 93 side is the N polar part
- a part 91 B on the opposite side is the S polar part which includes no cut or removed part.
- the magnetic body 90 , the wire 29 , the clip 18 , the tube 17 , and the connection plate 16 form an indwelling tool 95 which is attached to the indwelling device 1 .
- the outer diameter of the main body 91 of the magnetic body 90 is substantially the same as that of the insertion pipe 10 .
- the holding portion 92 can be loosely fit to the insertion pipe 10 .
- the indwelling device 1 to which the indwelling tool 95 is attached is inserted through the working channel 44 of the endoscope 41 to the vicinity of the diseased part W 2 .
- the axis of the magnetic body 90 is arranged substantially parallel to the axis of the working channel 44 and the axis of the endoscope 41 .
- the magnetic body 90 is attracted in a manner such that the plane 93 (i.e., the S pole) faces the N pole of the magnet 32 of the magnetic forceps 30 .
- the plane 93 i.e., the S pole
- the center part of the magnetic body which is closer to the magnet 32 (refer to a distance L 4 )
- the center part of the magnetic body which is closer to the magnet 32 (refer to a distance L 4 )
- the closer to the magnet 32 is closer to a distance L 4
- the center part which is closer to the magnet 32 (refer to a distance L 4 )
- the attraction force decreases.
- a wide area of the plane 93 closely contacts a tissue at a distance L 6 which is shorter than the distance L 5 , so that a stable and large magnetic force is applied to the magnet 32 . Therefore, in comparison with a case in which the magnetic body 90 has a circular section, a tissue (including the diseased part W 2 ) around the indwelling tool 95 can be attracted toward the magnetic forceps 30 by a stronger attraction force and be lifted toward the abdominal wall W 4 .
- the following steps are the same as those of the first embodiment.
- the plane 93 is provided in the magnetic body 90 having a long and cylindrical shape, which can be inserted into the working channel 44 . Therefore, when the plane 93 is made to face the magnetic forceps 30 , the plane 93 can closely contact the inside of the luminal organ W 1 . In this process, a wider area is attracted toward the magnet 32 in comparison with an end of the magnetic body 90 ; thus, the position of the magnetic body 90 can be stable. In addition, an area which contacts the tissue can be increased, thereby reducing a burden imposed on the tissue.
- the present invention can be widely applied without being limited to the disclosed embodiments.
- the magnetic body may have a polygonal section formed perpendicularly to the axis thereof.
- the working channel 44 may be a channel attached to an outer periphery of the endoscope 41 .
- a plurality of indwelling tools may be disposed around the diseased part W 2 so that a magnetic body of each indwelling tool is attracted so as to lift a tissue including the diseased part W 2 .
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Abstract
Description
- 1. Field of the Invention
- The present invention relates to a method of lifting a diseased part used in treatment performed in a living body, an indwelling tool used for lifting a diseased part, and a tissue lifting system including the indwelling tool.
- 2. Description of the Related Art
- A diseased part produced in a body of a patient is generally removed or cauterized. In a relevant treatment, the body of the patient may be opened in a surgical operation, or an endoscope is inserted from the mouth or the anus of the patient. Japanese Unexamined Patent Application, First Publication No. 2004-105247 (see FIGS. 6 to 11) shows an example of a method of removing a diseased part produced in a luminal organ by using an endoscope. In the method, first, an overtube is inserted into a diseased part of a luminal organ, and then an endoscope is inserted through the overtube. Next, a clip attachment tool is inserted through a channel of the endoscope, and a clip at the head of the clip attachment tool is attached to the diseased part. The endoscope is once pulled out from the overtube, and a magnetic anchor is inserted from the head of the endoscope through the channel. The endoscope is again inserted into the overtube, so as to engage the magnetic anchor with the clip. A magnetic induction member is disposed outside the body of the patient, so that the magnetic anchor is attracted due to magnetic force by the magnetic induction member. The diseased part is pulled via the clip and lifted in the luminal organ. The lifted diseased part is removed using a cutting and removing tool inserted into the channel of the endoscope.
- According to the first aspect of the present invention, a method of lifting a diseased part includes the steps of providing an indwelling tool having a magnetic body at the inside of a luminal organ by inserting the indwelling tool into a working channel which is inserted from a natural opening of a living body to the luminal organ, in a manner such that an axis along a length of the magnetic body is arranged substantially parallel to a length direction of the working channel; disposing the indwelling tool in a vicinity of the diseased part produced in the luminal organ; applying a magnetic field to the magnetic body by using a magnetic field generating device which is provided at the outside of the luminal organ, so as to attract the magnetic body and make a side face of the magnetic body along the axis thereof push against a tissue in the vicinity of the diseased part; and lifting a tissue around a position of the indwelling tool, which includes the diseased part, by applying a magnetic force to the magnetic body by using the magnetic field generating device.
- According to the second aspect of the present invention, a tissue lifting system includes an indwelling tool having an anchor fit to the inside of a luminal organ of a living body, and a magnetic body having an elongated shape, which is divided into two magnetized polar parts on either end along a longitudinal axis of the magnetic body; and a magnetic force generating device which is provided at the outside of the luminal organ and has a magnetic body having two poles arranged on an end thereof toward the luminal organ, wherein said two poles correspond to said either end of the magnetic body of the indwelling tool.
- According to the third aspect of the present invention, an indwelling tool includes an anchor fit to the inside of a luminal organ; and a soft magnetic body which is magnetized when being exposed in a magnetic field, wherein the soft magnetic body has a side face along a longitudinal axis of the soft magnetic body, the side face being pushed against a tissue inside the luminal organ, and a non-magnetic material is attached to either end of the magnetic body along the longitudinal axis.
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FIG. 1 is a partially sectional view showing the structure of an indwelling tool and an indwelling device as an embodiment in accordance with the present invention. -
FIG. 2 is a sectional view along line A-A inFIG. 1 . -
FIG. 3 is an enlarged view of a magnetic body. -
FIG. 4 is a perspective view showing magnetic forceps. -
FIG. 5 is a diagram showing a state in which an endoscope is inserted into a luminal organ. -
FIG. 6 is a diagram showing a state in which an indwelling tool is made to protrude from an insertion pipe and a magnetic body is hung from a clip. -
FIG. 7 is a diagram showing the indwelling tool is anchored. -
FIG. 8 is a diagram showing a step of inserting the magnetic forceps from an abdominal wall side. -
FIG. 9 is a diagram showing a state in which a tissue including a diseased part is lifted. -
FIG. 10 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps. -
FIG. 11 is a diagram showing the structure of an indwelling tool. -
FIG. 12 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps. -
FIG. 13 is a diagram showing the structure of an indwelling tool. -
FIG. 14 is an enlarged and partially-broken view of a head portion of the magnetic forceps. -
FIG. 15 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps. -
FIG. 16 is a diagram showing the structure of an indwelling tool. -
FIG. 17 is a diagram showing a state in which the magnetic body is attracted by the magnetic forceps. - Preferred embodiments of the present invention will be explained below. In the embodiments, common structural elements are given identical reference numerals or symbols, and duplicate explanations are omitted.
-
FIG. 1 shows an indwelling tool and an indwelling device used in a first embodiment. Theindwelling device 1 has anoperation section 2 handled by an operator. At a base end of amain body 3 of theoperation section 2, aring 4 for a finger of the operator is provided. Aslider 5 is attached to themain body 3 in a manner such that theslider 5 can freely slide. Theslider 5 is forced toward an end by a compressive-type coil spring 6. Apipe 7 is connected to theslider 5, and a wire is inserted through thepipe 7. This wire passes through acoil sheath 9 which is fixed on the head side of themain body 3, in a manner such that the wire can be freely advanced or withdrawn. Thecoil sheath 9 passes through aninsertion pipe 10 in a manner such that thecoil sheath 9 can freely advance or withdraw. Theinsertion pipe 10 is made of plastic such as fluororesin or polyethylene resin. At a base end of theinsertion pipe 10, agrip 11 is provided, which is held by the operator. Theinsertion pipe 10 and thecoil sheath 9 are each long and flexible, and are inserted into a working channel of an endoscope (not shown). Thewire 8 extending through thecoil sheath 9 is fastened to theslider 5. Aconnection plate 16 for anindwelling tool 15 is welded to the head of thewire 8. - As shown in
FIGS. 1 and 2 , theindwelling tool 15 consists of theconnection plate 16, atube 17, a clip (or anchor) 18 and amagnetic body 20. Theconnection plate 16 is welded to thewire 8, so that theconnection plate 16 passes through thetube 17 and is pulled out from the head of thetube 17. Ahook 19 is formed at the head of theconnection plate 16, and aloop portion 21 of theclip 18 is engaged with thehook 19. Theclip 18 is made of a thin and long member, a center portion of which is twisted so as to form theloop portion 21. In a natural state, a pair ofarms 22 are open toward the head side. - The
magnetic body 20 has amain body 25 whose base end forms aholding portion 26 having a smaller outer diameter. The outer diameter of themain body 25 is larger than the inner diameter of theinsertion pipe 10, and substantially the same as the outer diameter of theinsertion pipe 10. Theholding portion 26 is loosely fit to the inner periphery of theinsertion pipe 10 by press fitting or the like. The (longitudinal) axis of themagnetic body 20 is sufficiently longer than the diameter thereof. The axis of themagnetic body 20 substantially coincides with the length direction of a head portion of theindwelling device 1. A magnetic body (or material) is made either of a soft magnetic body or a hard magnetic body. In the present embodiment, themagnetic body 20 is made of a hard magnetic material. - As shown in an enlarged view of
FIG. 3 , themagnetic body 20 is divided into two magnetized polar parts with respect to a plane (as a boundary) positioned parallel to the axis of the magnetic body 20: one is apart 20A as an N pole, and the other is apart 20B as an S pole. A boundary line L1 between the poles matches the position of the axis of themagnetic body 20; however, the boundary line L1 may be offset from the position of the axis of themagnetic body 20. - As shown in
FIG. 1 , the holdingportion 26 has a throughhole 27 arranged substantially perpendicularly to the axis of the holdingportion 26, wherein agroove 28, which includes the opening of the throughhole 27, is formed toward the base end of the holdingportion 26. Awire 29 is inserted through the throughhole 27 and passes through thegroove 28, and further passes inside theloop portion 21 of theclip 18, so as to form a circular shape. -
FIG. 4 shows magnetic forceps used in the present embodiment.Magnetic forceps 30 as a magnetic force generating device have a pipe-shapedinsertion portion 31 whose head portion is closed by acover 31A. Apusher rod 31B is inserted into theinsertion portion 31, and amagnet 32 is fastened to the head of thepusher rod 31B. At the base end of theinsertion portion 31, anoperation section 33 is provided. Themagnet 32 in theinsertion portion 31 can be approached toward or withdrawn from thecover 31A by operating alever 33A of theoperation section 33. Theinsertion portion 31 passes through acylindrical sheath 34 made of a hard material. Detailed explanations of the structure and the method of using themagnetic forceps 30 are disclosed in U.S. patent application Ser. No. 11/076,662, related to the applicant of the present patent application, where the contents disclosed in U.S. patent application Ser. No. 11/076,662 are incorporated in the present embodiment. - The operation of the present embodiment will be explained.
- As shown in
FIG. 5 , anendoscope 41 is inserted from a natural opening (e.g., a mouth, an anus, a nose, or an ear) of a living body into a luminal organ W1. The inside of the luminal organ W1 is observed using anillumination device 42 and anobservation device 43 which are provided at the head of theendoscope 41, so as to confirm a diseased part W2 produced inside the luminal organ W1. Theindwelling device 1, to which the indwelling tool 15 (used first) is attached, is inserted through a workingchannel 44 of theendoscope 41. Here, the head of theindwelling device 1 is inserted along the axis (i.e., the length) of the workingchannel 44. Therefore, themagnetic body 20 of theindwelling tool 15 is inserted in a manner such that the axis of themagnetic body 20 is in parallel with the axes of the workingchannel 44 and theendoscope 41. - Then, the grip 11 (shown in
FIG. 1 ) of theindwelling device 1 is held so as to fix theinsertion portion 10 and push theoperating section 2, so that thecoil sheath 9 and theindwelling tool 15 protrude from the head opening of theinsertion pipe 10. Theclip 18 is directed to a tissue in the vicinity of the diseased part W2 of the luminal organ W1, so as to secure a specific distance between the diseased part W2 and theclip 18. As shown inFIG. 6 , theclip 18 proceeds together with thecoil sheath 9 so as to push out themagnetic body 20 from theinsertion pipe 10. Themagnetic body 20 and theclip 18 are coupled with each other via thewire 29; thus, themagnetic body 20 does not fall. - The
clip 18 is directed to a tissue in the vicinity of the diseased part W2 of the luminal organ W1, so as to secure a specific distance between the diseased part W2 and theclip 18. When theslider 5 is pulled, thewire 8 pulls theconnection plate 16, and theloop portion 21 is drawn into aninner hole 17A of thetube 17, so that the pair ofarms 22 open. While thearms 22 are open, theclip 18 is pushed onto a tissue at the indwelling position. When theslider 5 is pulled, theloop portion 21 is drawn into thetube 17, and thearms 22 are pushed onto an end of thetube 17, so that theclip 18 closes and a living tissue is clipped between thearms 22 of theclip 18. When theslider 5 is further pulled, the bending portion of thehook 19 formed at the head of theconnection plate 16 is finally released and linearlized, so that engagement between theconnection plate 16 and theloop portion 21 is released and theindwelling tool 15 is isolated from theindwelling device 1. When thecoil sheath 9 and theinsertion pipe 10 are withdrawn, the indwellingtool 15, which clips the tissue, stays and indwells as shown inFIG. 7 . Themagnetic body 20 is present in the vicinity of theclip 18 via thewire 29. Here, theclip 18, fit to thetube 17, keeps the closed state. Another method of connecting the indwellingtool 15 and thewire 8, and more detailed description for the indwelling process are disclosed in US Patent Application Publication, No. US2002/0173805A1, related to the Applicant of the present patent application. The contents disclosed in US2002/0173805A1 are incorporated into the present embodiment. - After the
indwelling tool 15 is anchored, theendoscope 41 is pulled out from the luminal organ W1. As shown inFIG. 8 , two holes are formed in an abdominal wall W4, the positions of the holes being close to the diseased part W2, and a forceps port W5 is inserted into each hole. - The
magnetic forceps 30 are inserted into the first forceps port W5, and cuttingforceps 50 are inserted into the second forceps port W5. Thelever 33A of theoperation section 33 of the magnetic forceps 30 (seeFIG. 4 ) is pulled so as to make themagnet 32 approach thecover 31A on the head side. As shown inFIG. 9 , due to a magnetic field generated by themagnet 32 of themagnetic forceps 30, themagnetic body 20 is magnetized and is attracted so that themagnetic body 20 contacts an inner wall of the luminal organ W1 in a manner such that an outerperipheral face 25A as a side face of themain body 25 along the axis thereof faces themagnet 32. As shown inFIG. 10 , when themagnetic forceps 30 are made to approach the luminal organ W1 from the outside thereof, themagnetic body 20 is directed in correspondence to the magnetic pole of themagnet 32 of themagnetic forceps 30. When the N pole of themagnetic forceps 30 faces the luminal organ W1, the side face 25A on thepart 20B side (as the N pole) contacts the inner wall of the luminal organ W1. - Accordingly, the indwelling
tool 15 moves toward themagnetic forceps 30. When theindwelling tool 15 is attracted to themagnetic forceps 30 and moves, a tissue (including the diseased part W2) in the vicinity of theindwelling tool 15 is also attracted toward themagnetic forceps 30. As a result, in the luminal organ W1, the tissue including the diseased part W2 protrudes toward the abdominal wall W4. In other words, the position of the tissue including the diseased part W2 is offset from its natural position toward the abdominal wall W4 (i.e., the tissue is lifted to the abdominal wall W4 side). The cuttingforceps 50 are then inserted into the second forceps port W5, so as to cut a peripheral line (see a dashed line inFIG. 9 ) around the position of theindwelling tool 15 and to remove a bent portion of the luminal organ W1. The isolated tissue is extracted from the second forceps port W5, and the remaining parts of the luminal organ W1 are seamed together. - In the present embodiment, the indwelling
tool 15 having themagnetic body 20 is made to indwell in the vicinity of the diseased part W2. Therefore, when themagnetic forceps 30 are made to approach from the outside of the luminal organ W1 so as to attract themagnetic body 20, a tissue including the diseased part W2 can be lifted toward the abdominal wall W4. Accordingly, it is possible to reliably isolate the diseased part W2 from the other tissues such as other luminal organs or other kinds of organs and to easily remove the diseased part W2. In addition, themagnetic body 20 is divided into two magnetized polar parts on either side of a plane parallel to the axis of themagnetic body 20; thus, the outerperipheral face 25A along the axis of themain body 25 contacts a tissue, so that a wide area can contact the tissue. Therefore, less burden is imposed on the tissue. -
FIG. 11 shows a magnetic body used in the present embodiment. Amagnetic body unit 60 has a cylindricalmain body 61 made of a soft magnetic material in the present embodiment, where a soft magnetic body (may also be called the soft magnetic material) is a magnetic body which loses its magnetic property when magnetic effects are excluded. That is, when being laid in a magnetic field, the soft magnetic body is magnetized, and when being extracted from the magnetic field (i.e., the magnetic field is removed), the soft magnetic body is substantially demagnetized. As a material for the soft magnetic body, iron, pure iron, silicon iron, Permalloy iron, or the like, are known. - The length along the axis of the
main body 61 is sufficiently larger than the diameter of themain body 61. Afirst part 62 made of a non-magnetic material is fastened to anend 61A along the length of themain body 61. Thefirst part 62 has the same outer diameter as that of themain body 61, and an end of thefirst part 62 has a spherical shape. To anotherend 61B of themain body 61 along the length thereof, asecond part 63 made of a non-magnetic material is fastened. Thesecond part 63 has the same outer diameter as that of themain body 61, and an end of thesecond part 63 forms the holdingportion 26 having a smaller diameter. In the holdingportion 26, the throughhole 27 and thegroove 28 are formed, through which thewire 29 passes. Thefirst part 62 and thesecond part 63 may be made of rubber, resin, or the like. - The
magnetic body unit 60, thewire 29, theclip 18, thetube 17, and theconnection plate 16 form anindwelling tool 65 attached to theindwelling device 1. The outer diameter of themain body 61 is substantially the same as that of theinsertion pipe 10. The holdingportion 26 of thesecond part 63 can be loosely fit to theinsertion pipe 10. When theindwelling tool 65 is attached to theindwelling device 1, the axis of themain body 61 coincides with the axis of the head portion of theindwelling device 1. - The operation of the present embodiment will be explained below.
- The
indwelling device 1 to which the indwellingtool 65 is attached is inserted through the workingchannel 44 of theendoscope 41 to the vicinity of the diseased part W2. In this process, the axis of themagnetic body unit 60 is arranged substantially parallel to the axis (i.e., the length) of the workingchannel 44 and the axis of theendoscope 41. When thewire 8 is withdrawn and theclip 18 of theindwelling tool 65 is anchored to a peripheral part of the diseased part W2, themagnetic forceps 30 are made to approach from the outside of the luminal organ W1, so that themain body 61 of themagnetic body unit 60 is magnetized due to the magnetic field produced by themagnetic forceps 30 and is attracted toward themagnetic forceps 30. - As shown by dashed lines in
FIG. 12 , when themagnetic body unit 60 is arranged in a manner such that thesecond part 63 contacts an inner wall of the luminal organ W1 and themagnetic body unit 60 is erected on this contact point, themagnetic body unit 60 falls with respect to a fulcrum on thesecond part 63 side. Thesecond part 63 is made of a non-magnetic material. Therefore, regarding the distance from themain body 61 of themagnetic body unit 60 to themagnet 32 of themagnetic forceps 30, a distance L3, measured when themagnetic body unit 60 is laid, that is, when an outerperipheral face 61C, which is a side face of themain body 61, faces themagnet 32, is less than a distance L2, measured when themagnetic body unit 60 is erected, that is, the axis of themagnetic forceps 30 is substantially in parallel to the axis of themagnetic body unit 60, thereby generating a strong attraction. Therefore, themagnetic body unit 60 is more stable when the outerperipheral face 61C of themain body 61 along the axis thereof faces themagnetic forceps 30. In accordance with this position, the outerperipheral face 61C of themain body 61 pushes against an inner wall of the luminal organ W1, so that a portion around a center point where the indwellingtool 65 is anchored is lifted. When themagnetic body unit 60 is erected on thefirst part 62 side, themagnetic body unit 60 falls with respect to a fulcrum on thefirst part 62 side, so that the outerperipheral face 61C of themain body 61 faces themagnet 32. The following steps in the operation are the same as those of the first embodiment. - In the present embodiment, both ends (i.e., the
first part 62 and the second part 63) of themagnetic body unit 60 are each made of a non-magnetic material; thus, when themagnetic forceps 30 are made to approach, an inner wall of the luminal organ W1 can always be pushed by the outerperipheral face 61C of themain body 61. Here, themagnetic body unit 60 must be a long form so as to be inserted through the workingchannel 44. Therefore, in comparison with the area of either end of themagnetic body unit 60, the area of the outerperipheral face 61C is considerably larger. Accordingly, in comparison with a case in which either end of themagnetic body unit 60 closely contacts a tissue, a wider contact area can be secured when the outerperipheral face 61C contacts a tissue, so that the position of themagnetic body unit 60 can be stable in attraction using themagnetic forceps 30. In addition, less burden is imposed on the tissue pushed by themagnetic body unit 60, and the direction of themagnetic body unit 60 can coincide with that of themagnet 32. -
FIG. 13 shows a magnetic body used in the present embodiment. Amagnetic body 70 has a cylindrical shape and is made of a permanent magnet. Themagnetic body 70 has a cylindricalmain body 71 having a spherical head, and a holdingportion 72 having a lesser diameter, formed on the base side of themain body 71. The axis along the length of themagnetic body 70 is sufficiently longer than the diameter of themain body 71. Themain body 71 is divided into two magnetized polar parts with respect to a line perpendicular to the axis of themain body 71, the line being positioned near the center along the length of the main body 71: one is apart 70A as an N pole on the head side, and the other is apart 70B as an S pole on the base side. - The
magnetic body 70, thewire 29, theclip 18, thetube 17, and theconnection plate 16 form anindwelling tool 75 which is attached to theindwelling device 1. The outer diameter of themagnetic body 70 is substantially the same as that of theinsertion pipe 10. The holdingportion 72 can be loosely fit to theinsertion pipe 10. When theindwelling tool 75 is attached to theindwelling device 1, the axis of themagnetic body 70 coincides with the axis of the head portion of theindwelling device 1. -
FIG. 14 showsmagnetic forceps 80 as a magnetic field generating device used in the present embodiment. In themagnetic forceps 80, amagnet 82 is contained in aninsertion portion 81 in a manner such that themagnet 82 can freely be advanced or withdrawn. Themagnet 82 is divided into two magnetized polar parts which are arranged parallel along the length of the insertion portion 81: one is apart 82A as an N pole and the other is apart 82B as an S pole. - The operation of the present embodiment will be explained below.
- The
indwelling device 1 to which the indwellingtool 75 is attached is inserted through the workingchannel 44 of theendoscope 41 to the vicinity of the diseased part W2. In this process, the axis of themagnetic body 70 is arranged substantially parallel to the axis (i.e., the length) of the workingchannel 44 and the axis of theendoscope 41. When theclip 18 of theindwelling tool 75 is anchored to a peripheral part of the diseased part W2, themagnetic forceps 80 are made to approach from the outside of the luminal organ W1. - Accordingly, the N pole of the
magnet 82 of themagnetic forceps 80 is attracted to thepart 70B (i.e., the S pole) of themagnetic body 70, and the S pole of themagnet 82 of themagnetic forceps 80 is attracted to thepart 70A (i.e., the N pole) of themagnetic body 70. As shown inFIG. 15 , in themagnetic body 70, a side face of themain body 71 along the axis of themagnetic body 70, that is, an outer peripheral face 71C contacts an inner plane of the luminal organ W1. The following steps are the same as those of the first embodiment. - In the present embodiment, the
magnetic body 70 is divided into two magnetized polar parts which are arranged along the length of themagnetic body 70; thus, the outer peripheral face 71C of themain body 71 of themagnetic body 70 can be reliably attracted using themagnet 82. Themagnetic body 70 must be a long shape so as to be inserted through the workingchannel 44; thus, the area of the outer peripheral face 71C is considerably larger than the area of either end of themagnetic body 70 along the length thereof. Therefore, in comparison with a case in which either end of themagnetic body 70 closely contacts a tissue, a wider contact area can be secured when the outer peripheral face 71C contacts a tissue. Accordingly, the position of themagnetic body 70 can be stable in attraction using themagnetic forceps 80. In addition, less burden is imposed on the tissue pushed by themagnetic body 70, and the direction of themagnetic body 70 can coincide with that of themagnet 82. -
FIG. 16 shows a magnetic body used in the present embodiment. Amagnetic body 90 has a longmain body 91 and a holdingportion 92 extending from a base portion of themain body 91. Themain body 91 has a plane 93 (i.e., a side face) parallel to the axis along the length of the main body, which is produced by cutting a part of a cylindrical shape. The head of themain body 91 has a spherical shape. Themain body 91 is made of a permanent magnet and is divided into N and S polar parts which are arranged parallel to theplane 93. InFIG. 16 , apart 91A on theplane 93 side is the N polar part, and apart 91B on the opposite side is the S polar part which includes no cut or removed part. - The
magnetic body 90, thewire 29, theclip 18, thetube 17, and theconnection plate 16 form anindwelling tool 95 which is attached to theindwelling device 1. The outer diameter of themain body 91 of themagnetic body 90 is substantially the same as that of theinsertion pipe 10. The holdingportion 92 can be loosely fit to theinsertion pipe 10. When theindwelling tool 95 is attached to theindwelling device 1, the axis of themagnetic body 90 coincides with the axis of the head portion of theindwelling device 1. - The operation of the present embodiment will be explained below.
- The
indwelling device 1 to which the indwellingtool 95 is attached is inserted through the workingchannel 44 of theendoscope 41 to the vicinity of the diseased part W2. In this process, the axis of themagnetic body 90 is arranged substantially parallel to the axis of the workingchannel 44 and the axis of theendoscope 41. When theclip 18 of theindwelling tool 95 is anchored to a peripheral part of the diseased part W2, themagnetic forceps 30 are made to approach from the outside of the luminal organ W1. - As shown in
FIG. 17 , themagnetic body 90 is attracted in a manner such that the plane 93 (i.e., the S pole) faces the N pole of themagnet 32 of themagnetic forceps 30. As shown by imaginary lines, if the magnetic body has a circular section, the center part of the magnetic body, which is closer to the magnet 32 (refer to a distance L4), is attracted by a stronger magnetic force; however, the further the position from the center part, the more rapidly the distance to the magnet 32 (see a distance L5) increases and the attraction force decreases. In contrast, in themagnetic body 90, a wide area of theplane 93 closely contacts a tissue at a distance L6 which is shorter than the distance L5, so that a stable and large magnetic force is applied to themagnet 32. Therefore, in comparison with a case in which themagnetic body 90 has a circular section, a tissue (including the diseased part W2) around the indwellingtool 95 can be attracted toward themagnetic forceps 30 by a stronger attraction force and be lifted toward the abdominal wall W4. The following steps are the same as those of the first embodiment. - In the present embodiment, the
plane 93 is provided in themagnetic body 90 having a long and cylindrical shape, which can be inserted into the workingchannel 44. Therefore, when theplane 93 is made to face themagnetic forceps 30, theplane 93 can closely contact the inside of the luminal organ W1. In this process, a wider area is attracted toward themagnet 32 in comparison with an end of themagnetic body 90; thus, the position of themagnetic body 90 can be stable. In addition, an area which contacts the tissue can be increased, thereby reducing a burden imposed on the tissue. - The present invention can be widely applied without being limited to the disclosed embodiments.
- For example, the magnetic body may have a polygonal section formed perpendicularly to the axis thereof. The working
channel 44 may be a channel attached to an outer periphery of theendoscope 41. A plurality of indwelling tools may be disposed around the diseased part W2 so that a magnetic body of each indwelling tool is attracted so as to lift a tissue including the diseased part W2. - The working
channel 44 may not be integrally provided together with theendoscope 41. For example, while observation is performed using an observation device (e.g., a capsule endoscope) which can be swallowed, a working channel having no observation function may be introduced into a living body, so as to perform treatment as described above (the working channel may have an observation function; however, one having no observation function can be thinner, and a burden imposed on the patient can be much more reduced).
Claims (7)
Priority Applications (2)
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US11/300,174 US20070135802A1 (en) | 2005-12-14 | 2005-12-14 | Method of lifting diseased part, tissue lifting system, and indwelling tool |
US16/136,595 US10779809B2 (en) | 2005-12-14 | 2018-09-20 | Method of lifting diseased part, tissue lifting system, and indwelling tool |
Applications Claiming Priority (1)
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US11/300,174 US20070135802A1 (en) | 2005-12-14 | 2005-12-14 | Method of lifting diseased part, tissue lifting system, and indwelling tool |
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US16/136,595 Continuation US10779809B2 (en) | 2005-12-14 | 2018-09-20 | Method of lifting diseased part, tissue lifting system, and indwelling tool |
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US20070135802A1 true US20070135802A1 (en) | 2007-06-14 |
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US16/136,595 Active 2026-01-18 US10779809B2 (en) | 2005-12-14 | 2018-09-20 | Method of lifting diseased part, tissue lifting system, and indwelling tool |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010041714A1 (en) * | 2008-10-10 | 2010-04-15 | 学校法人自治医科大学 | Surgery system for endoscopic submucosal dissection (esd) and surgery method |
DE102010008585A1 (en) * | 2010-02-19 | 2011-08-25 | Siemens Aktiengesellschaft, 80333 | endoscopy system |
CN102232855A (en) * | 2011-04-11 | 2011-11-09 | 西安交通大学 | Magnetic anastomat device for single-port laparoscopic colorectal resection |
US20120259350A1 (en) * | 2009-07-15 | 2012-10-11 | Michel Gagner | Incisionless Gastric Bypass Method And Devices |
US9339285B2 (en) | 2013-03-12 | 2016-05-17 | Levita Magnetics International Corp. | Grasper with magnetically-controlled positioning |
CN107411794A (en) * | 2017-09-04 | 2017-12-01 | 上海市同济医院 | The magnetic force systems of the regular mucous membrane surface of a wound can be closed under endoscope |
US9844391B2 (en) | 2009-02-06 | 2017-12-19 | Levita Magnetics International Corp. | Remote traction and guidance system for mini-invasive surgery |
US9877724B2 (en) | 2007-12-21 | 2018-01-30 | Michel Gagner | Methods and devices for endoscopically creating an anastomosis |
US10010370B2 (en) | 2013-03-14 | 2018-07-03 | Levita Magnetics International Corp. | Magnetic control assemblies and systems therefor |
US10537348B2 (en) | 2014-01-21 | 2020-01-21 | Levita Magnetics International Corp. | Laparoscopic graspers and systems therefor |
US10905511B2 (en) | 2015-04-13 | 2021-02-02 | Levita Magnetics International Corp. | Grasper with magnetically-controlled positioning |
US11020137B2 (en) | 2017-03-20 | 2021-06-01 | Levita Magnetics International Corp. | Directable traction systems and methods |
US11413025B2 (en) | 2007-11-26 | 2022-08-16 | Attractive Surgical, Llc | Magnaretractor system and method |
US11583354B2 (en) | 2015-04-13 | 2023-02-21 | Levita Magnetics International Corp. | Retractor systems, devices, and methods for use |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794041A (en) * | 1971-11-30 | 1974-02-26 | Yeda Res & Dev | Gastrointestinal catheter |
US5593379A (en) * | 1994-03-18 | 1997-01-14 | Surgery Futures Research, Inc. | Magnetic operating table |
US5595562A (en) * | 1994-11-10 | 1997-01-21 | Research Corporation Technologies, Inc. | Magnetic enteral gastrostomy |
US5766184A (en) * | 1994-11-02 | 1998-06-16 | Olympus Optical Co., Ltd. | Endoscopic treatment tool |
US6171231B1 (en) * | 1994-12-19 | 2001-01-09 | John G. Connolly | Urinary incontinence device |
US20010049497A1 (en) * | 2000-03-24 | 2001-12-06 | Kalloo Anthony Nicolas | Methods and devices for diagnostic and therapeutic interventions in the peritoneal cavity |
US6358196B1 (en) * | 1999-12-29 | 2002-03-19 | Reiza Rayman | Magnetic retraction system for laparoscopic surgery and method of use thereof |
US20020173805A1 (en) * | 2001-02-06 | 2002-11-21 | Kiyotaka Matsuno | Clipping device |
US20040050395A1 (en) * | 2002-09-13 | 2004-03-18 | Pentax Corporation | Magnetic anchor remote guidance system |
US6719768B1 (en) * | 2000-04-29 | 2004-04-13 | Ventrica, Inc. | Magnetic components for use in forming anastomoses, creating ports in vessels and closing openings in tissue |
WO2005002415A2 (en) * | 2003-07-02 | 2005-01-13 | Adrian Paz | Virtual ports devices and method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7766810B2 (en) | 2005-03-10 | 2010-08-03 | Olympus Medical Systems Corp. | Probing method and holding method for luminal organ |
JP4681920B2 (en) | 2005-03-30 | 2011-05-11 | オリンパスメディカルシステムズ株式会社 | Indwelling device placed in body cavity |
JP4709570B2 (en) | 2005-04-05 | 2011-06-22 | オリンパスメディカルシステムズ株式会社 | Detainer |
JP4847037B2 (en) | 2005-04-05 | 2011-12-28 | オリンパスメディカルシステムズ株式会社 | Magnetic forceps |
-
2005
- 2005-12-14 US US11/300,174 patent/US20070135802A1/en not_active Abandoned
-
2018
- 2018-09-20 US US16/136,595 patent/US10779809B2/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794041A (en) * | 1971-11-30 | 1974-02-26 | Yeda Res & Dev | Gastrointestinal catheter |
US5593379A (en) * | 1994-03-18 | 1997-01-14 | Surgery Futures Research, Inc. | Magnetic operating table |
US5766184A (en) * | 1994-11-02 | 1998-06-16 | Olympus Optical Co., Ltd. | Endoscopic treatment tool |
US5595562A (en) * | 1994-11-10 | 1997-01-21 | Research Corporation Technologies, Inc. | Magnetic enteral gastrostomy |
US6171231B1 (en) * | 1994-12-19 | 2001-01-09 | John G. Connolly | Urinary incontinence device |
US6358196B1 (en) * | 1999-12-29 | 2002-03-19 | Reiza Rayman | Magnetic retraction system for laparoscopic surgery and method of use thereof |
US20010049497A1 (en) * | 2000-03-24 | 2001-12-06 | Kalloo Anthony Nicolas | Methods and devices for diagnostic and therapeutic interventions in the peritoneal cavity |
US6719768B1 (en) * | 2000-04-29 | 2004-04-13 | Ventrica, Inc. | Magnetic components for use in forming anastomoses, creating ports in vessels and closing openings in tissue |
US20020173805A1 (en) * | 2001-02-06 | 2002-11-21 | Kiyotaka Matsuno | Clipping device |
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