CN102512215B - Controllable self-bent suture needle - Google Patents
Controllable self-bent suture needle Download PDFInfo
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- CN102512215B CN102512215B CN201110457818.2A CN201110457818A CN102512215B CN 102512215 B CN102512215 B CN 102512215B CN 201110457818 A CN201110457818 A CN 201110457818A CN 102512215 B CN102512215 B CN 102512215B
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Abstract
A controllable self-bent suture needle is used for endoscopic surgery and comprises a needle head, a needle body, a needle storage tube and a needle feeding mechanism. The needle body is tubular, and the needle head is penetratingly arranged in the needle body; the needle body is integrally penetratingly arranged in the needle storage tube; one end of the needle storage tube is a rigid tubular end while the other end of the needle storage tube is fixedly connected with the needle feeding mechanism; the tail end of the needle body is in the shape of an arc formed in advance when not restrained; the other end of the needle body is connected with the needle feeding mechanism, and the tail end can be stored in the rigid tubular end or exposed out of the rigid tubular end when the needle body is pushed by the needle feeding mechanism; the tail end is stored in the rigid tubular end and is restrained, the shape of the tail end is identical to that of a hollow inner cavity; a blade edge is ground at one end of the needle head and used for penetrating through tissues; and the other end of the needle head is connected with the needle feeding mechanism, and the needle head is pushed by the needing feeding mechanism to move relative to the needle body, so that a suture thread is assembled or disassembled. The controllable self-bent suture needle is simple in structure and simple and convenient in control, complex spatial movement for penetrating through the tissues is simplified into linear pushing movement of the needle feeding mechanism to the needle body and the needle head, and tissue suture difficulty is simplified.
Description
Technical field
The present invention relates to one for operating medical apparatus and instruments, relate in particular to a kind of for carry out structure and the using method of the suture needle of performing the operation by endoscope.
Background technology
In current widely used wound sew application, doctor use 3/8ths or the stainless steel suture needle 1 of rigidity of semi arch wound is carried out to sew application.As shown in Figure 1, the semicircle profile of suture needle has axis 2 in suture needle 1.One end of this tradition rustless steel suture needle 1 molds sharp sharp sword, is convenient to penetrate organ-tissue; The cross section of the other end is shaped to non-round polygon (as triangle), is convenient to effective clamping of needle forceps.It is the polygonal one end of non-circle that suture is connected to cross section.
Using the sew application of traditional suture needle to be divided into two steps, is respectively tissue penetration and suture knotting.As shown in Figure 2, in tissue penetration action, doctor need to use two needle forceps to cooperatively interact: first use one needle forceps clamping suture needle 1, the axis 2 of the semicircle profile of blind stitching pin rotates needle body, starts to penetrate the action of organ-tissue; When suture needle 1 is when organizing opposite side to pass,, continue to rotate around the axis 2 of the semicircle profile of this suture needle, until the complete penetrate tissue of suture needle 1 the bared end of needle forceps clamping suture needle 1 with other one.Now, because one end of suture needle 1 is connected with suture 3, suture 3 has also penetrated tissue completely.Under such state, doctor can continue to be used in conjunction with two suture needles and clamp, and realizes follow-up knotting action.
From aforesaid description, the realization of tissue penetration, need to complete a twist operation by the cooperation of two operating theater instruments, mostly be an elongated rigidity straight-bar in the profile of needle forceps, the action of this tissue penetration is difficult for accurately realizing, thereby makes whole stitching action also all become the difficult point in various operation techniques.If tissue penetration need to be undertaken by the mode of chamber Jing Yi Wicresoft, more increase extra difficulty to this task; In a lot of Minimally Invasive Surgerys, use the tissue penetration action of traditional suture needle also cannot implement.
U.S. patent of invention US5219358, name is called " Shape memory effect surgical needles (shape memory effect surgical sewing needle) ", August 21 1991 applying date, disclose a kind of surgical suture needle that adopts marmem to manufacture, it has low temperature state and the condition of high temperature.At its low temperature state, this suture needle be shaped as thin straight strip, can slip into a straight tube; In its condition of high temperature, the shape of this suture needle becomes default arc, for the stitching of endoscopic surgical.But the suture needle of this patent needs cryopreservation before use, and puts into human intracavity by the apparatus pipeline of endoscope fast, enter after human body, make the reach a high temperature arc of state of suture needle by heating, be used further to operating stitching.In addition, this suture needle still needs to use needle forceps clamping, uses inconvenience in the narrow working place of endoscopic surgery.
U.S. patent of invention US5573542, name is called " Endoscopic suture placement tool (endoscope's suture place tool) ", August 17 1994 applying date, disclose a kind of Microendoscopic and placed the instrument of suture, suture needle and drive rod that it makes shape-memory material are bonded together.In the time that this instrument is positioned at the apparatus pipeline of endoscope, its global shape is consistent with apparatus pipeline; In the time that drive rod stretches out from the apparatus pipeline of endoscope, its end bent becomes hook-shaped, uses as suture needle, and the head of this suture needle is also provided with pinprick, for suture is set, installs or unloads suture and all need to could realize by means of the help of other apparatuses.But the pinprick of this patent gets out on needle main body, clamp and unclamp suture for " passive " (have other apparatuses auxiliary), and do not possess the condition realizing on little external diameter (below diameter 1mm) needle body.In addition, this patent apparatus is rhombus by pipeline INTERFACE DESIGN, and end needle body can not rotate around place needle tubing axis.
U.S. patent of invention US6592559, name is called " Hollow; curved; superlastic medical needle (hollow, bending super-elasticity medical needle) ", and 1999 applyings date December 9 days discloses a kind of hollow needle tubing of manufacturing with elastic material, for injection, the shape of this needle tubing when unfettered is bending, but in the time introducing human body by a coaxial trocar sheath, can in the passage of this trocar sheath, suffer restraints and straightens.When this hollow needle tubing is from trocar sheath stretches out, reply again the curved shape when unfettered.This invention does not have needle point, is not with suture, does not therefore possess puncture and sews up function.
Therefore, those skilled in the art is devoted to develop a kind of suture needle easy to use, for endoscopic surgery.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of suture needle easy to use, for endoscopic surgery
For achieving the above object, the invention provides a kind of controllable self-bending suture needle, for the operation of carrying out by endoscope, comprise syringe needle, needle body, place needle tubing and Song Zhen mechanism; Wherein, described needle body is tubulose, and inside is equipped with described syringe needle; Described needle body again entirety is arranged in the needle tubing of described place; Described place needle tubing has hollow lumen, and at least one end is rigid tubular end, and the other end and described Song Zhen mechanism are fixedly connected; One end of described needle body is acra, and described acra is the first shape of the circular arc of molding in advance when unfettered; The other end of described needle body is connected with described Song Zhen mechanism, under the propelling movement of described Song Zhen mechanism, described needle body moves and rotates with respect to described place needle tubing, make the described acra of described needle body can be accommodated in the described rigid tubular end of described place needle tubing within or be exposed to required deflection angle outside the described rigid tubular end of described place needle tubing; Wherein, within described acra is accommodated in described rigid tubular end time, described acra suffers restraints, and becomes second shape consistent with the described hollow lumen of described place needle tubing at described rigid tubular end place; One end of described syringe needle is provided with sword limit, needs the tissue of suture site for puncturing; The other end of described syringe needle is connected with described Song Zhen mechanism, and under the propelling movement of described Song Zhen mechanism, described syringe needle moves with respect to described needle body, makes described syringe needle can hold with a firm grip or unclamp suture.
Preferably, described controllable self-bending suture needle, the described acra of at least described needle body is made up of the elastomeric material with strong restoring force.The elastomeric material further, with strong restoring force is Nitinol.
Preferably, in described controllable self-bending suture needle, the described rigid tubular end of described place needle tubing is straight tube-like, and described the second shape is substantially straight.Or in described controllable self-bending suture needle, the described rigid tubular end of described place needle tubing is bent tube form, described second is shaped as bending.In addition, the global shape of place needle tubing except rigid tubular end can be also linear or shaped form.
Preferably, in described controllable self-bending suture needle, described syringe needle is at least at tip place dimidiation, be separated position without under External Force Acting, at least comprise: the first jag end, the first linking part being connected with described the first jag end, the second jag end and the second linking part being connected with described the second jag end; Wherein said the first linking part and described the second linking part are thin elastic rod shape, and both external diameters after closing up are slightly less than the internal diameter of described needle body; External diameter after described the first jag end and described the second jag end close up is greater than the internal diameter of described needle body; Described the first linking part and described the second linking part are connected with described Song Zhen mechanism, in the time that described Song Zhen mechanism strains described the first linking part and described the second linking part, described syringe needle moves to described needle body direction, make the tube wall of described needle body oppress described the first linking part and described the second linking part, thereby described jag end the first jag end and described the second jag end close up, until described syringe needle is in closure state.Further, at least one in described the first jag end and described the second jag end is provided with breach, and when described syringe needle is during in described separated position, described breach is open, for holding with a firm grip or unclamping suture; When described syringe needle is during in described closure state, described breach sealing, for clamping suture.Further, on described the first jag end and described the second jag end, can be equipped with breach, this two breach is oppositely arranged, and makes when described syringe needle is during in described closure state described breach sealing.Described syringe needle can be symmetrical structure, wherein, and described the first jag end and described the second jag end symmetry, described the first linking part and described the second linking part symmetry.Described syringe needle can be also unsymmetric structure.
The present invention is applicable to being applied to hard pipe type endoscope or hose type endoscope.
The present invention compared with prior art has the following advantages and effect:
Of the present invention can folding syringe needle, hold with a firm grip and the action of unclamping suture is " initiatively " action, do not need other apparatuses auxiliary.And this can be arranged on the needle body that diameter is less (can be less than 1mm) above by folding syringe needle, still can realize and holds with a firm grip and unclamp suture.Apparatus pipeline of the present invention interface is circular, and in the time rotating Song Zhen mechanism around axis, end needle body can be realized the rotation around place needle tubing axis, therefore the present invention is than the many controllable degrees of freedom in the rhombus apparatus pipeline interface of prior art.The present invention is simple in structure, controls easyly, and the controllable self-bending suture needle of design is reduced to Song Zhen mechanism the complex space of tissue penetration motion the straight line of needle body and syringe needle is pushed to motion, can greatly simplify the overall difficulty of tissue apposition.
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is the rigid joint needle construction schematic diagram of prior art;
Fig. 2 is the motion schematic diagram that tissue penetration is implemented in the rigidity suture needle of prior art;
Fig. 3 is the structural representation of first preferred embodiment of the present invention;
Step schematic diagram when Fig. 4 to Fig. 7 is first preferred embodiment enforcement tissue penetration motion of the present invention;
Fig. 8 and Fig. 9 are the partial structurtes schematic diagrams of second preferred embodiment of the present invention;
Figure 10 is the structural representation of the 3rd preferred embodiment of the present invention;
Figure 11 is partial structurtes schematic diagram embodiment illustrated in fig. 10.
Detailed description of the invention
The essential meaning that uses suture needle to carry out tissue penetration is that suture is penetrated to wound (or other need suture) both sides, and follow-up suture knotting can be continued.The present invention, by designing a kind of suture needle and Song Zhen mechanism thereof that can accurately control autonomous serpentine track, greatly simplifies the complexity of tissue penetration action, thereby reduces the overall difficulty of sewing up action.
As shown in Figure 3, first preferred embodiment of the present invention is made up of syringe needle 10, needle body 20, place needle tubing 30 and Song Zhen mechanism 40.
The restoring force of elastomeric material after distortion mainly determine by two factors, and a factor is the Young's modulus of this elastomeric material, and in the certain situation of deflection, Young's modulus is larger, and deformation-recovery power is just larger; Another factor is the regime of elastic deformation of this elastomeric material, the size of the deflection that namely can reply, and in the situation that Young's modulus is certain, regime of elastic deformation is larger, and deformation-recovery power is also larger.
The Nitinol of certain proportioning, Young's modulus, in 70GPa left and right, is about stainless 1/3rd; And elastic deformation scope (elastic strain) can reach 6%, be about stainless 60 times; Within the scope of elastic deformation, Nitinol needle body can produce the restoring force several times in the rustless steel needle body of same size.
Place needle tubing 30 is rigidity, and its internal diameter is slightly larger than needle body 20 external diameters.The shape of place needle tubing 30 can be linear type or arc line type.When tubulose needle body 20 is under Song Zhen mechanism 40 drives, while bouncing back to place needle tubing 30 inside completely, needle body 20 can be constrained to by place needle tubing 30 shape of place needle tubing; Pushed to beyond place needle tubing 30 time when tubulose needle body 20,20 of tubulose needle bodies independently revert back to original-shape.
As shown in Figure 4, therefrom dimidiation of syringe needle 10, without being nature separated position under External Force Acting, thereby has jag end 11,12 and linking part 15,16.Linking part 15 and 16 is thin elastic rod shape, and its external diameter after closing up is slightly less than the internal diameter of tubulose needle body 20.When thin rod shape linking part 15 and 16 is tightened up, interior when mobile to tubulose needle body 20, the tube wall of needle body 20 can nature compressing jag end, makes syringe needle jag end 11,12 closures.11,12 liang of side grindings of syringe needle jag end have sword limit, to facilitate tissue penetration.The relative part of jag end 11,12 is provided with pinprick, closes up rear portability suture.External diameter after syringe needle jag end 11 and 12 closes up is greater than the internal diameter of tubulose needle body 20.Utilize the relative position of syringe needle 10 with respect to tubulose needle body 20, can control the folding of the syringe needle 10 of this jag, thereby can clamp or unclamp suture, to coordinate the needs of whole tissue penetration action.
The independent propelling movement length of controlling tubulose needle body 20 and deflection angle and syringe needle 10 relative position with respect to tubulose needle body 20 can be distinguished by Song Zhen mechanism 40.
In the time that Song Zhen mechanism 40 controls the propelling movement length of needle body 20, can make needle body 20 move or rotate around the axis of place needle tubing 30 along the axis direction of place needle tubing 30.Needle body 20 can be accommodated in place needle tubing 30 acra of needle body 20 along the movement of the axis direction of place needle tubing 30, or is exposed to outside the outlet of place needle tubing 30.Needle body 20 rotates and can make the acra of needle body 20 be exposed to the outlet of place needle tubing 30 with required deflection angle around the axis of place needle tubing 30, aims at more easily the tissue that will sew up.
Below in conjunction with Fig. 4 to Fig. 7, specifically narrate operational approach of the present invention.
1. Song Zhen mechanism 40 first pushes away tubulose needle body 20 by syringe needle 10, and the jag end 11,12 of syringe needle 10 freely separates under internal stress effect, as shown in Figure 4.Now, suture for example, can be put to the open interior of syringe needle 10 by another operating theater instruments (needle forceps).
2. Song Zhen mechanism 40 tightens up syringe needle 10 to tubulose needle body 20 inner sides, and the tube wall of needle body 20 draws the jag end 11,12 of syringe needle 10 in, and suture is held with a firm grip naturally, as shown in Figure 5.Now needle outlet aligning internal organs, the tissue of place needle tubing 30 are needed to the position of sewing up.
3. Song Zhen mechanism 40 combines syringe needle 10 together by tubulose needle body 20, extrapolated from the needle outlet of place needle tubing 30.Needle body 20, in the process outwards discharging, is independently replied original circular shape, under the help of syringe needle 10, in tissue, passes with arc track, passes tissue from the opposite side that needs suture location.In this process, because suture is clamped by syringe needle 10, suture is also taken to the opposite side that needs stitching, as shown in Figure 6.
4. syringe needle 10 is pushed away needle body 20 by Song Zhen mechanism 40, and the natural jag of syringe needle 10, unclamps suture, as shown in Figure 7.Another needle forceps is firmly grasped suture, and suture was pulled on to tissue.
5. syringe needle 10 tightens up in Song Zhen mechanism 40, and syringe needle 10 returns to state shown in Fig. 6 (now suture departs from).Song Zhen mechanism 40 together bounces back to syringe needle 10 and needle body 20 needle outlet of place needle tubing 30, state as shown in Figure 5 again.So far completing primary structure penetrates.
Fig. 8 and Fig. 9 show second preferred embodiment of the present invention.The difference of the present embodiment and the first embodiment is that two parts of syringe needle 10 ' jag are asymmetric, wherein on jag end 11 ', pinprick is not set, and only depending on the pinprick arranging on jag end 12 is portability suture, realizes object of the present invention.
In other embodiments, the linking part of syringe needle can be also asymmetric, as long as make syringe needle jag end separately close up after can being tightened up, can make it to carry suture, realizes object of the present invention.
In other embodiments, syringe needle also can be divided into three, four even more jag ends that separate as petal, as long as can make jag end separately, to unclamp suture, can make jag end close up, realize tissue penetration with the suture of holding with a firm grip, can realize object of the present invention.
Figure 10 and Figure 11 show the 3rd the present embodiment of the present invention.The difference of the present embodiment and the first embodiment is that place needle tubing 30 ' is syphon shape, when the acra of needle body 20 is incorporated in the place needle tubing 30 ' of syphon shape, be subject to the constraint of place needle tubing 30 ' hollow lumen, the acra of needle body 20 will correspondingly become the bending consistent with the hollow lumen of place needle tubing 30 '.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area just can design according to the present invention be made many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (8)
1. a controllable self-bending suture needle, for the operation of carrying out by endoscope, is characterized in that, comprises syringe needle, needle body, place needle tubing and Song Zhen mechanism; Wherein,
Described needle body is tubulose, and described needle body is through Technology for Heating Processing, and inside is equipped with described syringe needle; Described needle body again entirety is arranged in the needle tubing of described place;
Described place needle tubing has hollow lumen, and one end is rigid tubular end, and the other end and described Song Zhen mechanism are fixedly connected;
One end of described needle body is acra, and described acra is the first shape of the circular arc of molding in advance when unfettered; The other end of described needle body is connected with described Song Zhen mechanism, under the propelling movement of described Song Zhen mechanism, described needle body optionally moves or rotates around the axis of described place needle tubing along the axis direction of described place needle tubing, wherein, described needle body makes within the described acra of described needle body can be accommodated in the described rigid tubular end of described place needle tubing along the movement of the axis direction of described place needle tubing, or is exposed to outside the described rigid tubular end of described place needle tubing; And described needle body rotates the described acra of described needle body is exposed to required deflection angle outside the described rigid tubular end of described place needle tubing around the axis of described place needle tubing;
Wherein, within described acra is accommodated in described rigid tubular end time, described acra suffers restraints, and becomes second shape consistent with the described hollow lumen of described place needle tubing at described rigid tubular end place;
One end of described syringe needle is provided with sword limit, needs the tissue of suture site for puncturing; The other end of described syringe needle is connected with described Song Zhen mechanism, and under the propelling movement of described Song Zhen mechanism, described syringe needle moves with respect to described needle body, makes described syringe needle can hold with a firm grip or unclamp suture; Described syringe needle at least, at tip place dimidiation, is separated position without under External Force Acting, at least comprises: the first jag end, the first linking part being connected with described the first jag end, the second jag end and the second linking part being connected with described the second jag end; Wherein said the first linking part and described the second linking part are thin elastic rod shape, and both external diameters after closing up are less than the internal diameter of described needle body; External diameter after described the first jag end and described the second jag end close up is greater than the internal diameter of described needle body; Described the first linking part and described the second linking part are connected with described Song Zhen mechanism, in the time that described Song Zhen mechanism strains described the first linking part and described the second linking part, described syringe needle moves to described needle body direction, make the tube wall of described needle body oppress described the first linking part and described the second linking part, thereby described the first jag end and described the second jag end close up, until described syringe needle is in closure state.
2. controllable self-bending suture needle as claimed in claim 1, is characterized in that, the described acra of at least described needle body is made up of the elastomeric material with strong restoring force, described in there is strong restoring force elastomeric material be Nitinol.
3. controllable self-bending suture needle as claimed in claim 1, is characterized in that, the described rigid tubular end of described place needle tubing is straight tube-like or bent tube form, and described second is shaped as the substantially straight or bending corresponding with described rigid tubular end.
4. controllable self-bending suture needle as claimed in claim 1, is characterized in that, the global shape of described place needle tubing is linear or shaped form.
5. controllable self-bending suture needle as claimed in claim 1, is characterized in that, at least one in described the first jag end and described the second jag end is provided with breach, and when described syringe needle is during in described separated position, described breach is open, for holding with a firm grip or unclamping suture; When described syringe needle is during in described closure state, described breach sealing, for clamping suture.
6. controllable self-bending suture needle as claimed in claim 5, is characterized in that, on described the first jag end and described the second jag end, is equipped with breach, and this two breach is oppositely arranged, and makes when described syringe needle is during in described closure state described breach sealing.
7. controllable self-bending suture needle as claimed in claim 5, is characterized in that, described the first jag end and described the second jag end symmetry, described the first linking part and described the second linking part symmetry.
8. controllable self-bending suture needle as claimed in claim 1, is characterized in that, described endoscope is hard pipe type endoscope or hose type endoscope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110457818.2A CN102512215B (en) | 2011-12-31 | 2011-12-31 | Controllable self-bent suture needle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110457818.2A CN102512215B (en) | 2011-12-31 | 2011-12-31 | Controllable self-bent suture needle |
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| CN102512215A CN102512215A (en) | 2012-06-27 |
| CN102512215B true CN102512215B (en) | 2014-06-11 |
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| CN201110457818.2A Active CN102512215B (en) | 2011-12-31 | 2011-12-31 | Controllable self-bent suture needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11058415B2 (en) | 2017-03-08 | 2021-07-13 | Unity Health Toronto | Suture guide and related parts, kits, and methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219358A (en) * | 1991-08-29 | 1993-06-15 | Ethicon, Inc. | Shape memory effect surgical needles |
| US5573542A (en) * | 1994-08-17 | 1996-11-12 | Tahoe Surgical Instruments-Puerto Rico | Endoscopic suture placement tool |
| US6592559B1 (en) * | 1998-12-09 | 2003-07-15 | Cook Incorporated | Hollow, curved, superlastic medical needle |
| US7842046B1 (en) * | 2004-05-26 | 2010-11-30 | Granit Medical Innovations, Llc | Endoscopic sewing device and associated method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8500757B2 (en) * | 2009-07-28 | 2013-08-06 | Edwards Lifesciences Corporation | Surgical puncture cinch and closure system |
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2011
- 2011-12-31 CN CN201110457818.2A patent/CN102512215B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219358A (en) * | 1991-08-29 | 1993-06-15 | Ethicon, Inc. | Shape memory effect surgical needles |
| US5573542A (en) * | 1994-08-17 | 1996-11-12 | Tahoe Surgical Instruments-Puerto Rico | Endoscopic suture placement tool |
| US6592559B1 (en) * | 1998-12-09 | 2003-07-15 | Cook Incorporated | Hollow, curved, superlastic medical needle |
| US7842046B1 (en) * | 2004-05-26 | 2010-11-30 | Granit Medical Innovations, Llc | Endoscopic sewing device and associated method |
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