US20020032445A1 - Intramedullary nail - Google Patents
Intramedullary nail Download PDFInfo
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- US20020032445A1 US20020032445A1 US09/767,075 US76707501A US2002032445A1 US 20020032445 A1 US20020032445 A1 US 20020032445A1 US 76707501 A US76707501 A US 76707501A US 2002032445 A1 US2002032445 A1 US 2002032445A1
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- Prior art keywords
- bone
- connector
- nail member
- nail
- main portion
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
Definitions
- the present invention relates to an intramedullary nail used for an intramedullary nailing procedure.
- the intramedullary nail is mainly used for treating a fracture of the proximal portion of the femur such as an intertrochanteric fracture or a subtrochanteric fracture by pulling the proximal bone portion, separated from the femur by the fracture, to the femur to compress and fix them.
- the intramedullary nail includes a nail member inserted into the femur from one end thereof, and a lag screw extending through the nail member and connected to the bone portion separated by the fracture.
- the lag screw includes engaging means for engaging the separated bone portion at the forward end thereof, and is fixedly supported on the nail member by a set screw inserted into a threaded hole formed in the outer end of the nail member.
- the nail member is formed with a through hole extending diagonally across the proximal portion thereof so that the forward end of the lag screw inserted into the through hole may be screwed into the bone portion separated by fracture such as the caput of bone positioned at a diagonally upward side.
- the first step is to insert the nail member in the proximal end of the femur and install it in the medullary cavity thereof. Then, a locking screw can be inserted, if necessary, such that it extends across the medullary cavity and the distal portion of the nail member thereby fixing the nail member at a predetermined position in the femur.
- the engaging means (threaded portion) at the forward end of the lag screw is passed through the through hole of the nail member into the portion of the caput of bone positioned more proximal than the fractured portion thereby to secure the separated caput to the lag screw.
- the separated caput of the femur is pulled by the lag screw in such a manner as to press the separated caput against the main portion of the femur.
- the set screw is inserted into a threaded fixing hole of the nail member so that the forward end of the set screw engages the peripheral surface of the lag screw thereby to secure the lag screw to the nail member.
- the separated portion of the bone such as the fractured caput
- a single bone connector such as a lag screw
- the rotation of the separated bone portion hinders the separated bone portion from being coapted to the main portion of the bone. Therefore, this can result in a problem that the healing time of the fracture is increased or that the fracture line is displaced before the separated bone portion is coapted to the main portion.
- the degree of rotation is high, the muscle surrounding the separated portion of the bone such as the caput may be damaged.
- an intramedullary nail which includes a bone connector for connecting a bone portion separated from a main portion of a bone by fracture to the main portion, the bone connector extending through the main portion and secured in the separated bone portion; a nail member installed in the main portion of the bone for fixing the bone connector to the main portion, the bone connector extending through the nail member; a set screw inserted into an outer end of the nail member for securing the bone connector in the nail member; an auxiliary connector extending through the nail member between the bone connector and the set screw; and a spacer for transmitting a clamping force from the set screw to the bone connector thereby to clamp the bone connector.
- an intramedullary nail which includes a bone connector for connecting a bone portion separated from a main portion of a femur by fracture to the main portion, the bone connector extending through the main portion and secured in the separated bone portion; a nail member installed in the main portion of the femur for fixing the bone connector to the main portion, the bone connector slidably inserted through the nail member; a set screw inserted into a set hole for securing the bone connector in the nail member, the set hole formed in an outer end of the nail member and extending longitudinally of the nail member; an auxiliary connector extending through the nail member between the bone connector and the set screw; and a spacer for transmitting a clamping force from the set screw to the bone connector without interfering with the auxiliary connector, thereby to clamp the bone connector.
- an intramedullary nail which includes a bone connector for connecting a bone portion separated from a main portion of a bone by fracture to the main portion, the bone connector extending through the main portion and secured in the separated bone portion; a nail member installed in the main portion of the bone for fixing the bone connector to the main portion, the bone connector extending through the nail member; a set screw inserted into an outer end of the nail member for securing the bone connector in the nail member; and an auxiliary connector extending through the nail member and arranged in a position where the auxiliary connector is free from the set screw.
- the spacer includes two legs extending in spaced relation with each other, and the auxiliary connector extends through the nail member between the two legs.
- the bone connector has grooves formed on a peripheral surface thereof for the two legs of the spacer to engage.
- the set screw may include a boss extending toward the spacer, which boss passes through the spacer to engage a groove formed on a peripheral surface of the auxiliary connector.
- the auxiliary connector extending through the nail member between the bone connector and the set screw is provided and the spacer for transmitting the clamping force is interposed between the set screw and the bone connector, the auxiliary connector extending to the separated bone portion through the nail member prevents the rotation of the separated bone portion. Also, the clamping force of the set screw inserted to the outer end of the nail member is transmitted to the bone connector over the auxiliary connector via the spacer, thereby permitting the bone connector to be secured in the nail member.
- FIG. 1 is a partly sectional perspective view of one embodiment of an intramedullary nail according to the present invention
- FIG. 2 is a partly sectional view illustrating the whole intramedullary nail shown in FIG. 1 used to fix the fractured portions of the femur;
- FIG. 3 is a sectional view of the nail member shown in FIG. 1;
- FIG. 4 is a perspective view of one embodiment of a spacer for transmitting a clamping force
- FIG. 5 is a partly sectional view of the intramedullary nail for explaining the principle on which the clamping force is applied by a set screw to a lag screw via the spacer and by which the rotation of the lag screw is prevented;
- FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;
- FIG. 7 is a partly sectional perspective view of another embodiment of an intramedullary nail according to the present invention.
- FIG. 1 is a partly sectional perspective view of one embodiment of an intramedullary nail according to the present invention
- FIG. 2 is a partly sectional view illustrating the whole intramedullary nail shown in FIG. 1 used to fix the fractured portions of the femur
- FIG. 3 is a sectional view of the nail member shown in FIG. 1.
- the intramedullary nail 10 includes a rod-shaped nail member 16 inserted into the inner cavity (medullary cavity) 14 of a femur 12 from one end of the femur 12 , and a lag screw 22 , i.e. a bone connector for connecting to the main portion of the femur 12 a bone portion 20 separated from the main portion of the femur 12 by the fracture along a fracture line 18 .
- the nail member 16 includes a proximal portion 16 b , an distal portion 16 c longer than the proximal portion 16 b , and a bent portion 16 a located at a boundary between them.
- the proximal portion 16 b is formed with two through holes, a main through hole 24 and an auxiliary through hole 26 , extending in parallel diagonally across the nail member 16 in the neighborhood of the bent portion 16 a of the nail member 16 .
- the proximal portion 16 b of the nail member 16 is formed in a large size sufficient to accommodate the through holes 24 , 26 , while the distal portion 16 c is formed in a small size suitable for the shape of the inner cavity (medullary cavity) 14 of the femur 12 in order to facilitate the insertion of the distal portion 16 into it.
- Fixing through holes 28 extending orthogonal to the axis of the distal portion 16 c are formed at an end of the distal portion 16 c of the nail member 16 .
- Locking screws 30 are inserted across the shaft of the femur 12 (the body of the femur 12 ) into the fixing through holes 28 in order to securely fix the nail member 16 to the shaft of the femur 12 .
- the bone connector is the lag screw 22 .
- the lag screw 22 has engaging means 32 such as a threaded portion at the forward end thereof for engaging the bone portion 20 separated from the main portion of the femur 12 , and the proximal portion of the lag screw 22 is formed with a plurality of grooves 34 extending on the peripheral surface thereof along the axis of the lag screw 22 (in the lag screw 22 shown in FIGS. 1 and 2, four grooves 34 are disposed on the peripheral surface of the lag screw 22 at intervals of 90° around the axis of the lag screw 22 ).
- the lag screw 22 is inserted into the femur 12 with the engaging means 32 thereof directed ahead, and further slidably inserted into the main through hole 24 of the nail member 16 thereby to penetrate into the separated bone portion 22 .
- the lag screw 22 is fixedly secured in the separate bone portion 20 by causing the engaging means 32 at one end of the lag screw to engage the separated bone portion 20 .
- the separated bone portion 20 is fixed to the main portion of the femur 12 by securing the other end of the lag screw 22 to the main through hole 24 of the nail member 16 installed in the femur 12 .
- the intramedullary nail 10 further includes an auxiliary connector 36 slidably inserted through an auxiliary through hole 26 located in the nail member 10 as shown in FIGS. 1 and 2.
- the auxiliary connector 36 like the lag screw 22 , i.e. the bone connector, is arranged in such a position as to pass through the main portion of the femur 12 while being passed into the separated bone portion 20 thereof.
- the auxiliary connector 36 and the bone connector arranged in this way form two fixed axles extending from the nail member 16 to the separated bone portion 20 thereby to prevent the separated bone portion 20 from rotating about the bone connector (the lag screw 22 ).
- the auxiliary connector 36 can be used for other purposes than preventing the rotation of the separated bone portion 20 .
- a set hole 38 which extends longitudinally in the nail member 16 from one end thereof across the auxiliary through hole 26 to the main through hole 24 and has at least a portion threaded, is formed at the outer end (proximal end) of the nail member 16 .
- a set screw 42 is screwed into the set hole 38 for applying the clamping force to the lag screw 22 inserted into the main through hole 24 .
- an inner hole for the guide rod 44 may be formed along the longitudinal axis of the nail member 16 as shown in FIG. 3.
- the set hole 38 in the proximal portion 16 b of the nail member 16 constitutes a part of the inner hole for the guide rod 44 .
- the auxiliary connector 36 extends through the nail member 16 at a location between the set screw 42 screwed into the outer end of the nail member 16 and the lag screw 22 , i.e. a bone connector. Therefore, in order to allow the set screw 42 to apply a clamping force to the lag screw 22 over the auxiliary connector 36 , a spacer 46 for transmitting a clamping force is interposed between the set screw 42 and the lag screw 22 .
- FIG. 4 is a perspective view of one embodiment of the spacer 46 .
- FIG. 5 is a partly sectional view of the intramedullary nail for explaining the principle on which the clamping force is applied by the set screw to the lag screw 22 via the spacer 46 and the rotation of the lag screw 22 is prevented.
- FIG. 6 is a sectional view taken along line VI-VI of FIG. 5.
- the spacer 46 shown in FIG. 4 includes a body 46 a and two legs 46 b extending from the body 46 a in spaced relation with each other.
- the lag screw 22 can be secured in the nail member 16 by being clamped between the nail member 16 (particularly the surface of the main through hole 24 ) and the spacer 46 due to the friction between the lower ends of the legs 46 b of the spacer 46 and the peripheral surface of the lag screw 22 .
- the auxiliary connector 36 inserted into the auxiliary through hole 26 can pass through the nail member 16 by way of the space defined between the two spaced legs 46 b of the spacer 46 .
- the diameter of the portion of the set hole 38 in the neighborhood of the main through hole 24 is rendered smaller than that of the portion thereof engaged by the set screw 42 , and guide grooves 48 for the legs 46 b are formed on the inner surface of the set hole 38 as shown in FIG. 6.
- Such guide grooves 48 can prevent the spacer 46 from being rotated by the rotation of the set screw 42 when the set screw 42 is screwed into the set hole 38 .
- the portion of the set hole 38 where the diameter thereof changes defines a shoulder 50 as shown in FIG.
- the movable range of the spacer 46 is limited such that the lower ends of the legs 46 b are suspended in the main through hole 24 even when the spacer 46 moves to its lowest position. This enables the forward end of the leg screw 22 to come into contact with the legs 46 b of the spacer 46 during the insertion of the lag screw 22 , thereby moving the spacer 46 upward.
- a boss 52 may be formed at the forward end of the set screw 42 and inserted through an opening 54 formed in the body 46 a of the spacer 46 to abut against the auxiliary connector 36 , as shown in FIG. 1.
- the set screw 42 is inserted in the set hole 38 and engaged with the threaded portion thereof, so that the boss 52 of the set screw 42 comes into contact with the auxiliary connector 36 , which makes it possible to securely hold the auxiliary connector 36 in the nail member 16 .
- a longitudinally extending groove may be formed on the auxiliary connector 36 to be engaged by the boss 52 of the set screw 42 .
- FIG. 7 is a perspective view of another embodiment of an intramedullary nail 10 according to the present invention which is similar to that shown in FIG. 1 except that the bone connector is of such a type that the compression force can be easily exerted on the separated portion of bone.
- the bone connector shown in FIG. 7 includes a sleeve 56 inserted into the main through hole 24 of the nail member 16 , and the lag screw 22 is inserted into the sleeve 56 .
- the proximal end of the lag screw 22 is formed with a threaded hole (not shown) in the axial direction, and the forward end of the pulling screw 58 for pulling the lag screw 22 is inserted into the same threaded hole.
- the head of the proximal end of the pulling screw 58 is in contact with the annular shoulder formed on the inner surface of the proximal end of the sleeve 56 .
- the lag screw 22 can be pulled in such a direction as to pull the separated bone portion 20 toward the remainder (main portion) of the femur 12 and apply a compression force to it.
- the peripheral surface of the sleeve 56 shown in FIG. 7 is serrated to enhance a frictional engagement with the spacer 46 .
- the peripheral surface of the sleeve 56 can of course be formed with grooves, like the lag screw 22 shown in FIG. 1, which are adapted to engage the legs 46 b of the spacer 46 .
- Components of the intramedullary nail described above are preferably made of pure titanium, a titanium alloy, the cobalt-nickel alloy or a similar biocompatible material.
- the spacer 46 is shown as a separate member from the set screw 42 .
- the set screw 42 and the spacer 46 may be integrated with each other.
- the femur 12 includes a caput 60 at an end thereof and an inner cavity (medullary cavity) 14 in the shaft thereof.
- the fracture related to the caput 60 of the femur 12 is liable to occur in the neck portion of caput 60 having a thin root, for example, at the position indicated by the fracture line 18 shown in FIG. 2.
- the separated bone portion (caput 60 ) is fixed by a single bone connector like the lag screw 22 as in the prior art, the separated bone portion 20 could rotate about the bone connector (i.e. the lag screw 22 ), often having an adverse effect on the healing of the fractured portion.
- the intramedullary nail 10 is provided with an auxiliary connector 36 substantially parallel to the axis of a bone connector, and the separated bone portion 20 and the main portion of the femur 12 are connected and fixed to each other by use of these two connectors.
- a hole is formed in the femur 12 by drilling along the guide rod.
- the nail member 16 is inserted into the inner cavity 14 while being guided by the guide rod until it reaches a predetermined position as shown in FIG. 2. Then, by passing the locking screws 30 across the shaft of the femur 12 through the fixing through holes 28 , the nail member 16 is fixed at a predetermined position of the femur 12 . After the nail member 16 is fixed at a predetermined position, the guide rod is removed from the inner cavity 14 of the femur 12 .
- a guide pin (not shown) is inserted from the side wall of the femur 12 into the forward end of the caput 60 across the femur 12 through the main through hole 24 of the nail member 16 .
- the lag screw 22 is inserted into the femur 12 through the main through hole 24 of the nail member 16 with the engaging means (threaded portion) 32 of the lag screw 22 directed forward while being guided by the guide pin until the engaging means 32 of the lag screw 22 reaches the separated bone portion 20 (caput 60 ).
- the lag screw 22 is fixedly secured in (engaged with) the bone portion 20 by the engaging means 32 .
- the lag screw 22 is pulled in such a direction that the engaging means 32 approaches the nail member 16 to compress the fractured portions, and the separated bone portion 20 is pulled into close proximity with the main portion of the femur 12 .
- the auxiliary connector 36 is screwed from the side wall of the femur 12 across the femur 12 and through the auxiliary through hole 26 of the nail member 16 to the bone portion 20 .
- the nail member 16 installed in the shaft of the femur 12 and the separated bone portion 20 are connected to each other by the two connectors, i.e. the bone connector (lag screw 22 ) and the auxiliary connector 36 , with the result that the separated bone portion 20 cannot rotate.
- the spacer 46 is inserted into the set hole 38 formed at the outer end of the nail member 16 , and the set screw 42 is screwed over the spacer 46 .
- the auxiliary connector 36 extending laterally through the nail member 16 is adapted to pass between the legs 46 b of the spacer 46 .
- the clamping force of the set screw 42 is transmitted to the lag screw 22 over the auxiliary connector 36 extending across the nail member 16 between the set screw 42 and the lag screw 22 by way of the spacer 46 thereby to secure the lag screw 22 in the nail member 16 .
- the legs 46 b of the spacer 46 are guided along the guide grooves 48 formed in the inner surface of the set hole 38 . Therefore, the legs 46 b of the spacer 46 , which cannot be rotated by rotation of the set screw 42 , never interfere with the auxiliary connector 36 .
- the guide pin is removed after the lag screw 22 is secured in the nail member 16 .
- the intramedullary nail prevents the rotation of the separated bone portion 20 (caput 60 ) and the relative displacement of the fractured portions before the separated bone portion 20 and the main portion of the femur 12 are fixed and the fractured portions are successfully coapted to each other.
- the present invention was described above with reference to the intramedullary nail 10 used for fixing the fractured portions positioned in the neighborhood of the caput 60 of the femur 12 as an example. However, the present invention is equally applicable to any intramedullary nail for fixing fractured portions positioned in the neighborhood of the caput of other bones such as the humerus.
- an intramedullary nail can achieve the effect of preventing a rotation of a separated bone portion.
- One embodiment of this type of the intramedullary nail may include a bone connector extending through a femur to a bone portion separated from a main portion of the femur and secured to the separated bone portion for connecting the separated bone portion to the main portion of the femur, a nail member through which the bone connector extends and which is installed in the femur for fixing the bone connector to the main portion of the femur, a set screw inserted into an outer end of the nail member for securing the bone connector to the nail member, and an auxiliary connector extending through the nail member and arranged in a position where the auxiliary connector is free from the set screw (for example, under the bone connector or in a position farther away from the set screw than the bone connector).
- a separated bone portion can be fixed to a main portion of the femur by two connectors, i.e. a bone connector and an auxiliary connector, and therefore the fractured portions are not displaced by the rotation of the separated bone portion, thereby making it possible to promote the healing of the fracture. Also, since a clamping force of the set screw can be applied to the bone connector by a spacer for transmitting the clamping force over the auxiliary connector extending across the nail member at a position between the set screw and the bone connector, secure holding of the bone connector in the nail member is not sacrificed.
Abstract
Description
- 1. Field of the Invention
- The present invention relates to an intramedullary nail used for an intramedullary nailing procedure.
- 2. Description of the Related Art
- The intramedullary nail is mainly used for treating a fracture of the proximal portion of the femur such as an intertrochanteric fracture or a subtrochanteric fracture by pulling the proximal bone portion, separated from the femur by the fracture, to the femur to compress and fix them.
- The intramedullary nail includes a nail member inserted into the femur from one end thereof, and a lag screw extending through the nail member and connected to the bone portion separated by the fracture. The lag screw includes engaging means for engaging the separated bone portion at the forward end thereof, and is fixedly supported on the nail member by a set screw inserted into a threaded hole formed in the outer end of the nail member. The nail member is formed with a through hole extending diagonally across the proximal portion thereof so that the forward end of the lag screw inserted into the through hole may be screwed into the bone portion separated by fracture such as the caput of bone positioned at a diagonally upward side.
- In the treatment of the fractured proximal portion of the femur, the first step is to insert the nail member in the proximal end of the femur and install it in the medullary cavity thereof. Then, a locking screw can be inserted, if necessary, such that it extends across the medullary cavity and the distal portion of the nail member thereby fixing the nail member at a predetermined position in the femur. As the next step, the engaging means (threaded portion) at the forward end of the lag screw is passed through the through hole of the nail member into the portion of the caput of bone positioned more proximal than the fractured portion thereby to secure the separated caput to the lag screw. After that, the separated caput of the femur is pulled by the lag screw in such a manner as to press the separated caput against the main portion of the femur. When the caput of the femur comes to be positioned adjacent to the main portion thereof, the set screw is inserted into a threaded fixing hole of the nail member so that the forward end of the set screw engages the peripheral surface of the lag screw thereby to secure the lag screw to the nail member.
- However, the separated portion of the bone such as the fractured caput, which is secured only to a single bone connector such as a lag screw, is liable to rotate about the bone connector. The rotation of the separated bone portion hinders the separated bone portion from being coapted to the main portion of the bone. Therefore, this can result in a problem that the healing time of the fracture is increased or that the fracture line is displaced before the separated bone portion is coapted to the main portion. In the case where the degree of rotation is high, the muscle surrounding the separated portion of the bone such as the caput may be damaged.
- In order to prevent such a rotation of a separated bone portion, it is required to connect the separated bone portion of the femur and the main portion thereof by additionally providing an auxiliary connector extending across the nail member to the separated bone portion. However, the auxiliary connector cannot pass across through the nail member because of the presence of a set screw extending longitudinally inside of the nail member from one end thereof for securing the bone connector to the nail member.
- Accordingly, it is an object of the present invention to obviate the problem in the prior art described above to provide an intramedullary nail allowing a bone connector and an auxiliary connector to be inserted into a nail member for preventing the rotation of a bone portion separated from a main portion of a femur by fracture and located on the proximal side of the fractured portion, thereby to promote the healing of the fractured portion.
- In order to achieve the object described above, in accordance with a first aspect of the present invention, there is provided an intramedullary nail which includes a bone connector for connecting a bone portion separated from a main portion of a bone by fracture to the main portion, the bone connector extending through the main portion and secured in the separated bone portion; a nail member installed in the main portion of the bone for fixing the bone connector to the main portion, the bone connector extending through the nail member; a set screw inserted into an outer end of the nail member for securing the bone connector in the nail member; an auxiliary connector extending through the nail member between the bone connector and the set screw; and a spacer for transmitting a clamping force from the set screw to the bone connector thereby to clamp the bone connector.
- In accordance with a second aspect of the present invention, there is provided an intramedullary nail which includes a bone connector for connecting a bone portion separated from a main portion of a femur by fracture to the main portion, the bone connector extending through the main portion and secured in the separated bone portion; a nail member installed in the main portion of the femur for fixing the bone connector to the main portion, the bone connector slidably inserted through the nail member; a set screw inserted into a set hole for securing the bone connector in the nail member, the set hole formed in an outer end of the nail member and extending longitudinally of the nail member; an auxiliary connector extending through the nail member between the bone connector and the set screw; and a spacer for transmitting a clamping force from the set screw to the bone connector without interfering with the auxiliary connector, thereby to clamp the bone connector.
- In accordance with a third aspect of the present invention, there is provided an intramedullary nail which includes a bone connector for connecting a bone portion separated from a main portion of a bone by fracture to the main portion, the bone connector extending through the main portion and secured in the separated bone portion; a nail member installed in the main portion of the bone for fixing the bone connector to the main portion, the bone connector extending through the nail member; a set screw inserted into an outer end of the nail member for securing the bone connector in the nail member; and an auxiliary connector extending through the nail member and arranged in a position where the auxiliary connector is free from the set screw.
- In the intramedullary nail described above, the spacer includes two legs extending in spaced relation with each other, and the auxiliary connector extends through the nail member between the two legs. Preferably, the bone connector has grooves formed on a peripheral surface thereof for the two legs of the spacer to engage.
- In the above-mentioned intrammedullary nail, the set screw may include a boss extending toward the spacer, which boss passes through the spacer to engage a groove formed on a peripheral surface of the auxiliary connector.
- Since the auxiliary connector extending through the nail member between the bone connector and the set screw is provided and the spacer for transmitting the clamping force is interposed between the set screw and the bone connector, the auxiliary connector extending to the separated bone portion through the nail member prevents the rotation of the separated bone portion. Also, the clamping force of the set screw inserted to the outer end of the nail member is transmitted to the bone connector over the auxiliary connector via the spacer, thereby permitting the bone connector to be secured in the nail member.
- The above and other objects, features, and advantages of the present invention will be made more apparent from the following description of the preferred embodiments thereof with reference to the accompanying drawings, wherein:
- FIG. 1 is a partly sectional perspective view of one embodiment of an intramedullary nail according to the present invention;
- FIG. 2 is a partly sectional view illustrating the whole intramedullary nail shown in FIG. 1 used to fix the fractured portions of the femur;
- FIG. 3 is a sectional view of the nail member shown in FIG. 1;
- FIG. 4 is a perspective view of one embodiment of a spacer for transmitting a clamping force;
- FIG. 5 is a partly sectional view of the intramedullary nail for explaining the principle on which the clamping force is applied by a set screw to a lag screw via the spacer and by which the rotation of the lag screw is prevented;
- FIG. 6 is a sectional view taken along line VI-VI of FIG. 5; and
- FIG. 7 is a partly sectional perspective view of another embodiment of an intramedullary nail according to the present invention.
- Preferred embodiments of an intramedullary nail according to the present invention will be described below with reference to the accompanying drawings.
- FIG. 1 is a partly sectional perspective view of one embodiment of an intramedullary nail according to the present invention, and FIG. 2 is a partly sectional view illustrating the whole intramedullary nail shown in FIG. 1 used to fix the fractured portions of the femur. FIG. 3 is a sectional view of the nail member shown in FIG. 1.
- Referring to FIGS. 1 and 2, the
intramedullary nail 10 according to the present invention includes a rod-shaped nail member 16 inserted into the inner cavity (medullary cavity) 14 of afemur 12 from one end of thefemur 12, and alag screw 22, i.e. a bone connector for connecting to the main portion of the femur 12 a bone portion 20 separated from the main portion of thefemur 12 by the fracture along afracture line 18. - Specifically, referring to FIG. 3, the
nail member 16 includes aproximal portion 16 b, andistal portion 16 c longer than theproximal portion 16 b, and abent portion 16 a located at a boundary between them. As best shown in FIG. 3, theproximal portion 16 b is formed with two through holes, a main throughhole 24 and an auxiliary throughhole 26, extending in parallel diagonally across thenail member 16 in the neighborhood of thebent portion 16 a of thenail member 16. Theproximal portion 16 b of thenail member 16 is formed in a large size sufficient to accommodate the throughholes distal portion 16 c is formed in a small size suitable for the shape of the inner cavity (medullary cavity) 14 of thefemur 12 in order to facilitate the insertion of thedistal portion 16 into it. Fixing throughholes 28 extending orthogonal to the axis of thedistal portion 16 c are formed at an end of thedistal portion 16 c of thenail member 16.Locking screws 30 are inserted across the shaft of the femur 12 (the body of the femur 12) into the fixing throughholes 28 in order to securely fix thenail member 16 to the shaft of thefemur 12. - In the embodiment of the
intramedullary nail 10 shown in FIGS. 1 and 2, the bone connector is thelag screw 22. Thelag screw 22 has engagingmeans 32 such as a threaded portion at the forward end thereof for engaging the bone portion 20 separated from the main portion of thefemur 12, and the proximal portion of thelag screw 22 is formed with a plurality ofgrooves 34 extending on the peripheral surface thereof along the axis of the lag screw 22 (in thelag screw 22 shown in FIGS. 1 and 2, fourgrooves 34 are disposed on the peripheral surface of thelag screw 22 at intervals of 90° around the axis of the lag screw 22). Thelag screw 22 is inserted into thefemur 12 with theengaging means 32 thereof directed ahead, and further slidably inserted into the main throughhole 24 of thenail member 16 thereby to penetrate into theseparated bone portion 22. Thus, thelag screw 22 is fixedly secured in the separate bone portion 20 by causing theengaging means 32 at one end of the lag screw to engage the separated bone portion 20. Finally, the separated bone portion 20 is fixed to the main portion of thefemur 12 by securing the other end of thelag screw 22 to the main throughhole 24 of thenail member 16 installed in thefemur 12. - The
intramedullary nail 10 according to the present invention further includes anauxiliary connector 36 slidably inserted through an auxiliary throughhole 26 located in thenail member 10 as shown in FIGS. 1 and 2. Theauxiliary connector 36, like thelag screw 22, i.e. the bone connector, is arranged in such a position as to pass through the main portion of thefemur 12 while being passed into the separated bone portion 20 thereof. - The
auxiliary connector 36 and the bone connector arranged in this way form two fixed axles extending from thenail member 16 to the separated bone portion 20 thereby to prevent the separated bone portion 20 from rotating about the bone connector (the lag screw 22). However, theauxiliary connector 36 can be used for other purposes than preventing the rotation of the separated bone portion 20. - A
set hole 38, which extends longitudinally in thenail member 16 from one end thereof across the auxiliary throughhole 26 to the main throughhole 24 and has at least a portion threaded, is formed at the outer end (proximal end) of thenail member 16. Aset screw 42 is screwed into theset hole 38 for applying the clamping force to thelag screw 22 inserted into the main throughhole 24. - Further, in order to allow a guide rod (not shown) to be used for facilitating the insertion into the
inner cavity 14 of thefemur 12, an inner hole for theguide rod 44 may be formed along the longitudinal axis of thenail member 16 as shown in FIG. 3. In such a case, theset hole 38 in theproximal portion 16 b of thenail member 16 constitutes a part of the inner hole for theguide rod 44. - In the
intramedullary nail 10 according to the present invention, theauxiliary connector 36 extends through thenail member 16 at a location between theset screw 42 screwed into the outer end of thenail member 16 and thelag screw 22, i.e. a bone connector. Therefore, in order to allow theset screw 42 to apply a clamping force to thelag screw 22 over theauxiliary connector 36, aspacer 46 for transmitting a clamping force is interposed between theset screw 42 and thelag screw 22. - FIG. 4 is a perspective view of one embodiment of the
spacer 46. FIG. 5 is a partly sectional view of the intramedullary nail for explaining the principle on which the clamping force is applied by the set screw to thelag screw 22 via thespacer 46 and the rotation of thelag screw 22 is prevented. FIG. 6 is a sectional view taken along line VI-VI of FIG. 5. - The
spacer 46 shown in FIG. 4 includes abody 46 a and twolegs 46 b extending from thebody 46 a in spaced relation with each other. - As shown in FIG. 5, when the
set screw 42 is placed on thespacer 46 inserted into theset hole 38 and is screwed into it, theset screw 42 engaged with the threaded portion of theset hole 38 abuts against thebody 46 a. Thus, theset screw 42 pushes down the whole of thespacer 46 and the lower ends of thelegs 46 b come into engagement with thegrooves 34 of thelag screw 22, thereby securing thelag screw 22 in thenail member 16 while at the same time preventing the rotation of thelag screw 22. Even in the case where thegrooves 34 are not formed on the periphery surface of thelag screw 22, thelag screw 22 can be secured in thenail member 16 by being clamped between the nail member 16 (particularly the surface of the main through hole 24) and thespacer 46 due to the friction between the lower ends of thelegs 46 b of thespacer 46 and the peripheral surface of thelag screw 22. - The
auxiliary connector 36 inserted into the auxiliary throughhole 26, on the other hand, can pass through thenail member 16 by way of the space defined between the two spacedlegs 46 b of thespacer 46. As shown in FIG. 5, preferably, the diameter of the portion of theset hole 38 in the neighborhood of the main throughhole 24 is rendered smaller than that of the portion thereof engaged by theset screw 42, and guidegrooves 48 for thelegs 46 b are formed on the inner surface of theset hole 38 as shown in FIG. 6.Such guide grooves 48 can prevent thespacer 46 from being rotated by the rotation of theset screw 42 when theset screw 42 is screwed into theset hole 38. Also, the portion of theset hole 38 where the diameter thereof changes defines ashoulder 50 as shown in FIG. 3, thereby limiting the downward movement of thebody 46 a of thespacer 46. Thus, the movable range of thespacer 46 is limited such that the lower ends of thelegs 46 b are suspended in the main throughhole 24 even when thespacer 46 moves to its lowest position. This enables the forward end of theleg screw 22 to come into contact with thelegs 46 b of thespacer 46 during the insertion of thelag screw 22, thereby moving thespacer 46 upward. - In the case where it is desirable to securely hold the
auxiliary connector 26 in thenail member 16, aboss 52 may be formed at the forward end of theset screw 42 and inserted through anopening 54 formed in thebody 46 a of thespacer 46 to abut against theauxiliary connector 36, as shown in FIG. 1. In this way, theset screw 42 is inserted in theset hole 38 and engaged with the threaded portion thereof, so that theboss 52 of theset screw 42 comes into contact with theauxiliary connector 36, which makes it possible to securely hold theauxiliary connector 36 in thenail member 16. Further, in order to prevent the rotation of theauxiliary connector 36, a longitudinally extending groove may be formed on theauxiliary connector 36 to be engaged by theboss 52 of theset screw 42. - FIG. 7 is a perspective view of another embodiment of an
intramedullary nail 10 according to the present invention which is similar to that shown in FIG. 1 except that the bone connector is of such a type that the compression force can be easily exerted on the separated portion of bone. - The bone connector shown in FIG. 7 includes a
sleeve 56 inserted into the main throughhole 24 of thenail member 16, and thelag screw 22 is inserted into thesleeve 56. The proximal end of thelag screw 22 is formed with a threaded hole (not shown) in the axial direction, and the forward end of the pullingscrew 58 for pulling thelag screw 22 is inserted into the same threaded hole. The head of the proximal end of the pullingscrew 58 is in contact with the annular shoulder formed on the inner surface of the proximal end of thesleeve 56. By rotating the pullingscrew 58, thelag screw 22 can be pulled in such a direction as to pull the separated bone portion 20 toward the remainder (main portion) of thefemur 12 and apply a compression force to it. The peripheral surface of thesleeve 56 shown in FIG. 7 is serrated to enhance a frictional engagement with thespacer 46. Alternatively, the peripheral surface of thesleeve 56 can of course be formed with grooves, like thelag screw 22 shown in FIG. 1, which are adapted to engage thelegs 46 b of thespacer 46. - Components of the intramedullary nail described above are preferably made of pure titanium, a titanium alloy, the cobalt-nickel alloy or a similar biocompatible material.
- In the shown embodiment, the
spacer 46 is shown as a separate member from theset screw 42. However, theset screw 42 and thespacer 46 may be integrated with each other. - A method of using the
intramedullary nail 10 shown in FIG. 1 will be now described. - The
femur 12, as shown in FIG. 2, includes acaput 60 at an end thereof and an inner cavity (medullary cavity) 14 in the shaft thereof. The fracture related to thecaput 60 of thefemur 12 is liable to occur in the neck portion ofcaput 60 having a thin root, for example, at the position indicated by thefracture line 18 shown in FIG. 2. In the case of such a fracture, if the separated bone portion (caput 60) is fixed by a single bone connector like thelag screw 22 as in the prior art, the separated bone portion 20 could rotate about the bone connector (i.e. the lag screw 22), often having an adverse effect on the healing of the fractured portion. In view of this, theintramedullary nail 10 according to the invention is provided with anauxiliary connector 36 substantially parallel to the axis of a bone connector, and the separated bone portion 20 and the main portion of thefemur 12 are connected and fixed to each other by use of these two connectors. - First, after a guide rod (not shown) is inserted into the
femur 12 along theinner cavity 14 thereof, a hole is formed in thefemur 12 by drilling along the guide rod. Thenail member 16 is inserted into theinner cavity 14 while being guided by the guide rod until it reaches a predetermined position as shown in FIG. 2. Then, by passing the locking screws 30 across the shaft of thefemur 12 through the fixing throughholes 28, thenail member 16 is fixed at a predetermined position of thefemur 12. After thenail member 16 is fixed at a predetermined position, the guide rod is removed from theinner cavity 14 of thefemur 12. - As the next step, a guide pin (not shown) is inserted from the side wall of the
femur 12 into the forward end of thecaput 60 across thefemur 12 through the main throughhole 24 of thenail member 16. After drilling a hole in thefemur 12 along the guide pin, thelag screw 22 is inserted into thefemur 12 through the main throughhole 24 of thenail member 16 with the engaging means (threaded portion) 32 of thelag screw 22 directed forward while being guided by the guide pin until the engaging means 32 of thelag screw 22 reaches the separated bone portion 20 (caput 60). Thus, thelag screw 22 is fixedly secured in (engaged with) the bone portion 20 by the engagingmeans 32. After that, thelag screw 22 is pulled in such a direction that the engaging means 32 approaches thenail member 16 to compress the fractured portions, and the separated bone portion 20 is pulled into close proximity with the main portion of thefemur 12. - As the next step, in order to prevent the separated bone portion from rotating about the
lag screw 22, theauxiliary connector 36 is screwed from the side wall of thefemur 12 across thefemur 12 and through the auxiliary throughhole 26 of thenail member 16 to the bone portion 20. As a result, thenail member 16 installed in the shaft of thefemur 12 and the separated bone portion 20 are connected to each other by the two connectors, i.e. the bone connector (lag screw 22) and theauxiliary connector 36, with the result that the separated bone portion 20 cannot rotate. - As the last step, the
spacer 46 is inserted into theset hole 38 formed at the outer end of thenail member 16, and theset screw 42 is screwed over thespacer 46. In the process, theauxiliary connector 36 extending laterally through thenail member 16 is adapted to pass between thelegs 46 b of thespacer 46. By tightening theset screw 42, thelegs 46 b of thespacer 46 are forced to come into engagement with thegrooves 34 of thelag screw 22, so that thelag screw 22 is securely held in thenail member 16 while the rotation of thelag screw 22 is prevented. Specifically, in theintramedullary nail 10 according to the invention, the clamping force of theset screw 42 is transmitted to thelag screw 22 over theauxiliary connector 36 extending across thenail member 16 between theset screw 42 and thelag screw 22 by way of thespacer 46 thereby to secure thelag screw 22 in thenail member 16. Thelegs 46 b of thespacer 46 are guided along theguide grooves 48 formed in the inner surface of theset hole 38. Therefore, thelegs 46 b of thespacer 46, which cannot be rotated by rotation of theset screw 42, never interfere with theauxiliary connector 36. The guide pin is removed after thelag screw 22 is secured in thenail member 16. - As described above, the intramedullary nail prevents the rotation of the separated bone portion20 (caput 60) and the relative displacement of the fractured portions before the separated bone portion 20 and the main portion of the
femur 12 are fixed and the fractured portions are successfully coapted to each other. - The present invention was described above with reference to the
intramedullary nail 10 used for fixing the fractured portions positioned in the neighborhood of thecaput 60 of thefemur 12 as an example. However, the present invention is equally applicable to any intramedullary nail for fixing fractured portions positioned in the neighborhood of the caput of other bones such as the humerus. - In addition, another type of an intramedullary nail can achieve the effect of preventing a rotation of a separated bone portion. One embodiment of this type of the intramedullary nail may include a bone connector extending through a femur to a bone portion separated from a main portion of the femur and secured to the separated bone portion for connecting the separated bone portion to the main portion of the femur, a nail member through which the bone connector extends and which is installed in the femur for fixing the bone connector to the main portion of the femur, a set screw inserted into an outer end of the nail member for securing the bone connector to the nail member, and an auxiliary connector extending through the nail member and arranged in a position where the auxiliary connector is free from the set screw (for example, under the bone connector or in a position farther away from the set screw than the bone connector).
- It will thus be understood from the foregoing description that, according to the present invention, a separated bone portion can be fixed to a main portion of the femur by two connectors, i.e. a bone connector and an auxiliary connector, and therefore the fractured portions are not displaced by the rotation of the separated bone portion, thereby making it possible to promote the healing of the fracture. Also, since a clamping force of the set screw can be applied to the bone connector by a spacer for transmitting the clamping force over the auxiliary connector extending across the nail member at a position between the set screw and the bone connector, secure holding of the bone connector in the nail member is not sacrificed.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2000231416A JP4278289B2 (en) | 2000-07-27 | 2000-07-27 | Intramedullary nail |
JP2000-231416 | 2000-07-27 |
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US (1) | US6406477B1 (en) |
EP (1) | EP1175872A3 (en) |
JP (1) | JP4278289B2 (en) |
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CA (1) | CA2337303A1 (en) |
Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050055024A1 (en) * | 2003-09-08 | 2005-03-10 | James Anthony H. | Orthopaedic implant and screw assembly |
US20050069397A1 (en) * | 2002-01-23 | 2005-03-31 | Ronen Shavit | Locking mechanism for intramedullary nails |
US20050182402A1 (en) * | 2002-04-04 | 2005-08-18 | Henrik Hansson | Device at medullary nails for fixation of bone fragments at bone fractures |
US20060036248A1 (en) * | 2004-07-01 | 2006-02-16 | Ferrante Joseph M | Fixation elements |
US20070049938A1 (en) * | 2005-08-31 | 2007-03-01 | Wallace Matthew S | Intramedullary nail assembly with locking component, locking component and nail for use therewith |
US20070049939A1 (en) * | 2005-08-31 | 2007-03-01 | Wallace Matthew S | Intramedullary nail assembly with sleeve and screw for use therewith |
US20070219636A1 (en) * | 2004-04-12 | 2007-09-20 | Thakkar Navin N | implant assembly for proximal femoral fracture |
US20070233101A1 (en) * | 2006-03-31 | 2007-10-04 | Metzinger Anthony J | Variable angle intramedullary nail, assembly and method |
US20070233103A1 (en) * | 2006-03-31 | 2007-10-04 | Metzinger Anthony J | Intramedullary nail, intramedullary nail assembly and method |
US20070270845A1 (en) * | 2003-09-08 | 2007-11-22 | Kohsuke Watanabe | Orthopaedic plate and screw assembly |
US20070299447A1 (en) * | 2003-09-08 | 2007-12-27 | Kohsuke Watanabe | Orthopaedic plate and screw assembly |
US20080221623A1 (en) * | 2005-10-17 | 2008-09-11 | Gooch Hubert L | Systems and Methods for the Medical Treatment of Structural Tissue |
US20080249580A1 (en) * | 2005-09-28 | 2008-10-09 | Smith & Nephew, Inc. | Methods and Instruments of Reducing a Fracture |
US20080281326A1 (en) * | 2007-03-20 | 2008-11-13 | Kohsuke Watanabe | Orthopaedic plate and screw assembly |
US20090216283A1 (en) * | 2005-03-01 | 2009-08-27 | Hans-Georg Gradl | Blocking device for a broken or cracked bone |
US20090326534A1 (en) * | 2008-06-30 | 2009-12-31 | Depuy Products, Inc. | Fracture Fixation Apparatus |
US20100145337A1 (en) * | 2007-02-28 | 2010-06-10 | Smith & Nephew, Inc. | Instrumented orthopaedic implant for identifying a landmark |
US20100152566A1 (en) * | 2007-02-28 | 2010-06-17 | Smith & Nephew, Inc. | System and method for identifying a landmark |
US20100174284A1 (en) * | 2008-10-15 | 2010-07-08 | Zimmer, Gmbh | Intramedullary nail |
US20100179551A1 (en) * | 2007-05-25 | 2010-07-15 | Zimmer, Gmbh | Reinforced intramedullary nail |
US20100179550A1 (en) * | 2007-05-23 | 2010-07-15 | Ulrich Schreiber | Intramedullary nail, particularly lockable intramedullary nail, and device for fixating the intramedullary nail in a hollow bone |
US20100249781A1 (en) * | 2009-03-31 | 2010-09-30 | Depuy Products, Inc. | Intramedullary nail with locking key |
US20100256638A1 (en) * | 2008-06-24 | 2010-10-07 | Jeff Tyber | Intraosseous intramedullary fixation assembly and method of use |
US20100274256A1 (en) * | 2009-04-27 | 2010-10-28 | Smith & Nephew, Inc. | System and Method for Identifying a Landmark |
US20110144766A1 (en) * | 2008-06-19 | 2011-06-16 | Shreedhar Kale | Allograft Bone Plugs, Systems and Techniques |
US20110196370A1 (en) * | 2008-11-06 | 2011-08-11 | Synthes Usa, Llc | One Way Sliding Device for Intramedullary Intertrochanteric Fixation Implants |
US20110208037A1 (en) * | 2008-02-28 | 2011-08-25 | Smith & Nephew, Inc. | System and method for identifying a landmark |
US20110230884A1 (en) * | 2008-06-24 | 2011-09-22 | Adam Mantzaris | Hybrid intramedullary fixation assembly and method of use |
US20120123415A1 (en) * | 2010-11-17 | 2012-05-17 | Vienney Cecile | Devices, Methods and Systems for Remedying or Preventing Fractures |
US20120143192A1 (en) * | 2009-06-30 | 2012-06-07 | Kohsuke Watanabe | Polyaxial fastener systems and methods |
US20120157997A1 (en) * | 2004-03-11 | 2012-06-21 | Sohngen Gary W | Fixation Instrument for Treating a Bone Fracture |
USD674093S1 (en) | 2009-08-26 | 2013-01-08 | Smith & Nephew, Inc. | Landmark identifier for targeting a landmark of an orthopaedic implant |
US8449544B2 (en) | 2009-06-30 | 2013-05-28 | Smith & Nephew, Inc. | Orthopaedic implant and fastener assembly |
US20130204251A1 (en) * | 2009-05-05 | 2013-08-08 | Synthes Usa, Llc | Nail locking systems |
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US8623023B2 (en) | 2009-04-27 | 2014-01-07 | Smith & Nephew, Inc. | Targeting an orthopaedic implant landmark |
USD704841S1 (en) | 2009-08-26 | 2014-05-13 | Smith & Nephew, Inc. | Landmark identifier for targeting an orthopaedic implant |
US8784425B2 (en) | 2007-02-28 | 2014-07-22 | Smith & Nephew, Inc. | Systems and methods for identifying landmarks on orthopedic implants |
US8890511B2 (en) | 2011-01-25 | 2014-11-18 | Smith & Nephew, Inc. | Targeting operation sites |
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US8920476B2 (en) | 2008-06-24 | 2014-12-30 | Extremity Medical, Llc | Fixation system, an intramedullary fixation assembly and method of use |
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US9017329B2 (en) | 2008-06-24 | 2015-04-28 | Extremity Medical, Llc | Intramedullary fixation assembly and method of use |
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US9168153B2 (en) | 2011-06-16 | 2015-10-27 | Smith & Nephew, Inc. | Surgical alignment using references |
US20150320461A1 (en) * | 2014-05-07 | 2015-11-12 | Acumed Llc | Hip fixation with load-controlled dynamization |
US9289220B2 (en) | 2008-06-24 | 2016-03-22 | Extremity Medical Llc | Intramedullary fixation assembly and method of use |
US9433451B2 (en) | 2013-12-09 | 2016-09-06 | Acumed Llc | Hip fixation system with a compliant fixation element |
US9433449B2 (en) | 2012-04-13 | 2016-09-06 | Orthopedic Designs North America, Inc | Intramedullary nail system including tang-deployment screw with male interface |
US9433448B2 (en) | 2013-12-09 | 2016-09-06 | Acumed Llc | Nail-based compliant hip fixation system |
US9463055B2 (en) | 2013-12-09 | 2016-10-11 | Acumed Llc | Plate-based compliant hip fixation system |
US9517094B1 (en) * | 2014-05-09 | 2016-12-13 | Savage Medical Design LLC | Intramedullary fixation apparatus for use in hip and femur fracture surgery |
US9539037B2 (en) | 2010-06-03 | 2017-01-10 | Smith & Nephew, Inc. | Orthopaedic implants |
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US20180078291A1 (en) * | 2016-09-22 | 2018-03-22 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
US10080596B2 (en) | 2013-12-09 | 2018-09-25 | Acumed Llc | Hip fixation with load-controlled dynamization |
US10092334B2 (en) * | 2016-09-01 | 2018-10-09 | Omic Corporation | Femur fixation apparatus |
US11801077B2 (en) | 2022-03-14 | 2023-10-31 | Orthotek, LLC. | Bone fixation system |
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Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6652529B2 (en) * | 2001-09-12 | 2003-11-25 | Todd V. Swanson | Method and apparatus for treating supracondylar fractures of the femur |
US6835197B2 (en) * | 2001-10-17 | 2004-12-28 | Christoph Andreas Roth | Bone fixation system |
US20070011049A1 (en) * | 2005-07-09 | 2007-01-11 | Eder Jeffrey S | Intelligent, personalized commerce chain |
DE50303208D1 (en) | 2002-05-14 | 2006-06-08 | Tantum Ag | osteosynthesis |
US7780710B2 (en) | 2004-01-23 | 2010-08-24 | Depuy Products, Inc. | System for stabilization of fractures of convex articular bone surfaces including subchondral support structure |
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US7744638B2 (en) | 2004-01-23 | 2010-06-29 | Depuy Products, Inc. | System for stabilization of fractures of convex articular bone surfaces including subchondral support structure |
US20060206044A1 (en) | 2002-08-10 | 2006-09-14 | Simon Willliam H | Method and apparatus for repairing the mid-food region via an intramedullary nail |
US7179260B2 (en) | 2003-09-29 | 2007-02-20 | Smith & Nephew, Inc. | Bone plates and bone plate assemblies |
US7632272B2 (en) * | 2002-10-03 | 2009-12-15 | Synthes Usa, Llc | Device for bone fixation |
DE50212482D1 (en) * | 2002-11-04 | 2008-08-21 | Zimmer Gmbh | The bone fixation system |
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WO2004100810A1 (en) * | 2003-05-17 | 2004-11-25 | Depuy International Limited | An intramedullary nail assembly |
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US7601153B2 (en) * | 2003-12-25 | 2009-10-13 | Homs Engineering Inc. | Intramedullary nail |
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US7896886B2 (en) * | 2005-01-28 | 2011-03-01 | Depuy Products, Inc. | Nail plate and implantation jig therefor |
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US20070049940A1 (en) * | 2005-08-31 | 2007-03-01 | Wallace Matthew S | Intramedullary nail assembly with fixed securement and associated method |
US7955358B2 (en) | 2005-09-19 | 2011-06-07 | Albert Todd J | Bone screw apparatus, system and method |
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US8114079B2 (en) * | 2008-03-31 | 2012-02-14 | Depuy Products, Inc. | Intramedullary nail with coupled shafts |
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US8790343B2 (en) | 2008-10-11 | 2014-07-29 | Epix Orthopaedics, Inc. | Intramedullary rod with pivotable and fixed fasteners and method for using same |
JP5291719B2 (en) * | 2008-10-31 | 2013-09-18 | 株式会社ロバート・リード商会 | Bone fixation member and femoral fixation system |
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US9044272B2 (en) | 2009-11-09 | 2015-06-02 | Ebi, Llc | Multiplanar bone anchor system |
US8449578B2 (en) * | 2009-11-09 | 2013-05-28 | Ebi, Llc | Multiplanar bone anchor system |
US8562606B2 (en) | 2009-12-11 | 2013-10-22 | Small Bone Innovations, Inc. | Ankle fusion device, instrumentation and methods |
JP5345564B2 (en) * | 2010-01-20 | 2013-11-20 | クロスト株式会社 | Medical instruments |
US8652136B2 (en) | 2011-08-15 | 2014-02-18 | Zimmer, Gmbh | Femoral fracture fixation device |
JP6247644B2 (en) | 2012-02-08 | 2017-12-13 | エピックス オーソペディックス インコーポレイテッド | Implant insertion device having a continuously adjustable targeting assembly |
JP6058958B2 (en) * | 2012-09-24 | 2017-01-11 | 株式会社ホムズ技研 | Intramedullary fixation system |
US9320555B2 (en) | 2013-01-31 | 2016-04-26 | Stryker European Holdings I, Llc | Modular lag screw |
US9369921B2 (en) | 2013-05-31 | 2016-06-14 | Liveu Ltd. | Network assisted bonding |
US10123828B2 (en) | 2013-03-15 | 2018-11-13 | Epix Orthopaedics, Inc. | Implantable device with pivotable fastener and self-adjusting set screw |
WO2015052841A1 (en) * | 2013-10-11 | 2015-04-16 | プロスパー株式会社 | Device for osteosynthesis and osteosynthesis |
JP2015073843A (en) * | 2013-10-11 | 2015-04-20 | 株式会社オーミック | Thighbone fixing device |
US9770278B2 (en) | 2014-01-17 | 2017-09-26 | Arthrex, Inc. | Dual tip guide wire |
US9814499B2 (en) | 2014-09-30 | 2017-11-14 | Arthrex, Inc. | Intramedullary fracture fixation devices and methods |
WO2016174720A1 (en) * | 2015-04-27 | 2016-11-03 | プロスパー株式会社 | Bone connector |
AU2015395914A1 (en) * | 2015-05-22 | 2017-12-07 | Stryker European Holdings I, Llc | Implant system for bone fixation |
CN105395244A (en) * | 2015-11-23 | 2016-03-16 | 赵文 | Femoral intramedullary nail device |
US9895177B2 (en) | 2016-01-15 | 2018-02-20 | ARTHREX, GmbH | Bone fixation device for treatment of femoral fractures |
CN106073877A (en) * | 2016-07-14 | 2016-11-09 | 闻泰医疗科技(上海)有限公司 | A kind of near end of thighbone Medullary fixation device |
US10492803B2 (en) | 2016-09-22 | 2019-12-03 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
US11083503B2 (en) | 2016-09-22 | 2021-08-10 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
JP6434477B2 (en) * | 2016-12-08 | 2018-12-05 | 株式会社ホムズ技研 | Intramedullary fixation system |
US11446072B2 (en) | 2017-10-10 | 2022-09-20 | DePuy Synthes Products, Inc. | Self-retaining nail to insertion handle interface |
US10945850B2 (en) * | 2018-10-25 | 2021-03-16 | Revision Technologies Llc | Interconnected implants and methods |
US11633219B2 (en) | 2019-06-26 | 2023-04-25 | Globus Medical, Inc. | Fenestrated pedicle nail |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH666176A5 (en) * | 1984-11-30 | 1988-07-15 | Straumann Inst Ag | DEVICE FOR TREATING A BONE AND NAIL FOR SUCH A DEVICE. |
US4827917A (en) * | 1986-12-30 | 1989-05-09 | Richards Medical Company | Fermoral fracture device |
US5312406A (en) * | 1986-12-30 | 1994-05-17 | Smith & Nephew Richards Inc. | Method of treating an intertrochanteric fracture |
US5176681A (en) | 1987-12-14 | 1993-01-05 | Howmedica International Inc. | Intramedullary intertrochanteric fracture fixation appliance and fitting device |
US5032125A (en) * | 1990-02-06 | 1991-07-16 | Smith & Nephew Richards Inc. | Intramedullary hip screw |
FR2698261B1 (en) | 1992-11-24 | 1995-03-17 | Lacaffiniere Jean Yves De | Device for guiding a double screw of the neck of the femur for locked trochantero-diaphyseal nail. |
IT242435Y1 (en) * | 1996-10-24 | 2001-06-14 | Hit Medica Srl | NAIL FOR THE REDUCTION OF TROCANTERIC FRACTURES AND OF THE NECK DELFEMORE. |
US6106528A (en) * | 1997-02-11 | 2000-08-22 | Orthomatrix, Inc. | Modular intramedullary fixation system and insertion instrumentation |
US6228086B1 (en) * | 1997-03-19 | 2001-05-08 | Stryker Trauma-Selzach Ag | Modular intramedullary nail |
JP3311660B2 (en) | 1997-11-12 | 2002-08-05 | 瑞穂医科工業株式会社 | Intramedullary nail |
US6123708A (en) * | 1999-02-03 | 2000-09-26 | Pioneer Laboratories, Inc. | Intramedullary bone fixation rod |
US6235031B1 (en) * | 2000-02-04 | 2001-05-22 | Encore Medical Corporation | Intramedullary fracture fixation device |
-
2000
- 2000-07-27 JP JP2000231416A patent/JP4278289B2/en not_active Expired - Lifetime
-
2001
- 2001-01-22 US US09/767,075 patent/US6406477B1/en not_active Expired - Lifetime
- 2001-02-05 AU AU18252/01A patent/AU1825201A/en not_active Abandoned
- 2001-02-10 EP EP01103164A patent/EP1175872A3/en not_active Withdrawn
- 2001-02-15 CA CA002337303A patent/CA2337303A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
EP1175872A3 (en) | 2003-11-19 |
EP1175872A2 (en) | 2002-01-30 |
AU1825201A (en) | 2002-01-31 |
JP4278289B2 (en) | 2009-06-10 |
CA2337303A1 (en) | 2002-01-27 |
US6406477B1 (en) | 2002-06-18 |
JP2002035000A (en) | 2002-02-05 |
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