CN213156357U - Proximal femur fracture positioning combination - Google Patents
Proximal femur fracture positioning combination Download PDFInfo
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- CN213156357U CN213156357U CN202020926931.5U CN202020926931U CN213156357U CN 213156357 U CN213156357 U CN 213156357U CN 202020926931 U CN202020926931 U CN 202020926931U CN 213156357 U CN213156357 U CN 213156357U
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- 206010016454 Femur fracture Diseases 0.000 title description 2
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 127
- 210000002436 femur neck Anatomy 0.000 claims abstract description 70
- 210000000689 upper leg Anatomy 0.000 claims abstract description 47
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 39
- 210000000527 greater trochanter Anatomy 0.000 claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 210000001694 thigh bone Anatomy 0.000 abstract description 22
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 238000009940 knitting Methods 0.000 description 19
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 206010017076 Fracture Diseases 0.000 description 5
- 208000020089 femoral neck fracture Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002391 femur head Anatomy 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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Abstract
The utility model provides a thighbone near-end coaptation location combination belongs to orthopedics internal fixation technical field, including coaptation board, guide pin, first bone screw, locking spiral shell lid and set screw group. The bone fracture plate is used for being installed on the outer side face of the proximal end of the femur, and a first threaded hole is formed in the bone fracture plate. The first bone screw is used for accurately resetting the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head, and the first bone screw is connected with the first threaded hole spherical hinge pair. The locking screw cap is used for being matched and connected with the screw hole and pressing and fixing the positioned first bone screw. The fixing screw group is used for locking the femoral neck after the first bone screw is positioned and resetting the bone plate for fixing the position. The utility model provides a thighbone near-end coaptation location combination can improve the precision that the thighbone neck resets and the fixed stability of thighbone near-end fracture, and can adapt to the patient of thighbone variation in size.
Description
Technical Field
The utility model belongs to the technical field of orthopedics internal fixation, more specifically say, relate to a thighbone near-end coaptation location combination.
Background
The proximal femur comprises a shaft, a greater trochanter, a neck and a head. Femoral neck fracture is a common injury of hip joint, pain of hip after injury, and incapability of standing and walking. After the femoral neck is fractured, the displacement is basically obvious, and the lever action of the part is large, so that the fracture is unstable, and the operation treatment is needed.
In the prior art, for the treatment of femoral neck fracture, an internal fixation system treatment mode is generally adopted, namely, a plurality of hollow compression screws and dynamic hip screws are adopted to connect and fix the fractured femoral neck. When the bone-knitting method is used for penetrating the first hollow compression screw, the fracture part cannot be accurately positioned, and the position of the hollow compression screw is fixed. Therefore, when the second hollow compression screw or other screws are inserted, gaps or relative slippage can occur at the fracture site of the femoral neck. Therefore, a series of complications such as non-union and an excessively large bone defect area occur at the fracture site, and the internal fixation fails. In addition, the penetration angle of the hollow compression screw for positioning is basically fixed, and the hollow compression screw cannot adapt to the thighbone of different patients.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a thighbone near-end coaptation location combination aims at solving the current poor and poor problem of adaptability of thighbone neck internal fixation structure positioning accuracy.
In order to achieve the above object, the utility model adopts the following technical scheme: the proximal femur bone-setting positioning combination comprises a bone plate, a guide pin, a first bone-setting screw, a locking screw cap and a fixing screw group; wherein the content of the first and second substances,
the bone fracture plate is provided with a mounting surface matched with the outer side surface of the proximal femur and a locking hole for the fixing screw group to pass through, and is used for being mounted on the outer side surface of the proximal femur;
one end of the first bone screw is used for penetrating through the first threaded hole and the femoral neck connected with the greater trochanter and is fixedly connected with the femoral neck connected with the femoral head, the other end of the first bone screw is connected with the spherical hinge pair of the bone fracture plate and is used for universally rotating on the bone fracture plate so as to accurately reset and reset the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head, and the first bone screw is provided with a hollow structure for the guide pin to penetrate through;
the guide pin is provided with at least one guide pin, and is used for penetrating into the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head in advance so as to be used for guiding the first bone screw;
the locking screw cap is arranged in the first threaded hole, is abutted against one end of the first bone screw and is used for compressing and fixing the first bone screw after the position is determined; and
and the fixing screw group is used for locking the femoral neck after the first bone screw is positioned and fixing the bone fracture plate on the femur.
As another embodiment of the present application, the first threaded hole has a countersunk structure, the first threaded hole has a large hole portion and a small hole portion, the large hole portion is located at one end of the first threaded hole away from the femur, and the small hole portion is located at one end of the first threaded hole close to the femur;
the large hole part of the first threaded hole is provided with an internal thread structure which is used for being in threaded fit with the locking screw cap, and the locking screw cap is provided with a thread structure which is used for being in threaded fit with the first threaded hole.
As another embodiment of the present application, the first bone screw comprises a nut portion and a screw portion;
the screw cap part is provided with a spherical structure used for being connected with the first threaded hole spherical hinge pair.
As another embodiment of the present application, the proximal femur bone-setting positioning assembly further includes a second bone-setting screw, the second bone-setting screw is used to sequentially pass through the bone-setting plate, the femoral neck connected to the greater trochanter and the femoral neck connected to the femoral head, so as to lock the femoral neck after the first bone-setting screw is positioned; the second bone screw and the first bone screw are in an intercrossed structure in the vertical direction and the left-right direction of the bone fracture plate;
the screw rod part of the second bone screw is of a full thread structure, a second threaded hole for the second bone screw to pass through is formed in the bone fracture plate, and the hollow structure for the guide pin to pass through is formed.
As another embodiment of the present application, the set screw includes:
the central axis of each locking screw and the central axis of the first bone screw are arranged in a cross way in a different plane, and the two locking screws are arranged in a divergent mode along the axial direction and used for locking the femoral neck after the first bone screw is positioned; and
and a plurality of auxiliary screws are arranged below the first bone screws at intervals from top to bottom, and each auxiliary screw penetrates through the bone fracture plate and the femoral shaft respectively.
As another embodiment of the present application, the screw portion of the locking screw is of a full thread structure, and the screw portion of the auxiliary screw is of a full thread structure.
As another embodiment of the present application, a diameter of the screw portion of the auxiliary screw is smaller than a diameter of the screw portion of the locking screw.
As another embodiment of the present application, the locking hole includes a plurality of first screw holes for the locking screws to pass through and a plurality of second screw holes for the auxiliary screws to pass through; wherein the number of the first screw holes corresponds to the number of the locking screws, and the number of the second screw holes corresponds to the number of the auxiliary screws.
As another embodiment of the present application, the second screw hole has a long hole structure.
As another embodiment of the application, a corner part for forming the first threaded hole is arranged in the middle of the bone plate, and edge parts for smoothly transiting with the femur and the greater trochanter are arranged at two ends of the bone plate;
the first threaded hole is disposed at the corner portion.
The utility model provides a thighbone near-end coaptation location combination's beneficial effect lies in: compared with the prior art, the utility model discloses thighbone near-end coaptation location combination major structure comprises coaptation board, guide pin, first coaptation screw, locking spiral shell lid and set screw group, and the structure is comparatively simple. The mounting surface of the bone fracture plate is matched and attached with the outer side surface of the proximal femur, and the bone fracture plate can be stably mounted on the outer side surface of the proximal femur. The bone fracture plate is provided with a first threaded hole, and the locking screw cap can fix the first bone screw on the bone fracture plate. The guide pin can penetrate into the femoral neck along the first threaded hole so as to facilitate the penetration guide of the first bone screw. The first bone screw is connected with the spherical hinge pair of the bone fracture plate, can rotate at a certain angle on the bone fracture plate by taking the connecting point as a spherical center, namely rotates universally relative to the bone fracture plate, is convenient for penetrating into a femoral neck when the bone fracture plate is fixed, and accurately resets and pressurizes the femoral neck connected with the femoral neck and the femoral head connected with the greater trochanter. The locking nut can be arranged on the bone fracture plate and can compress and fix the positioned first bone fracture screw, so that the first bone fracture screw is ensured not to rotate any more. The femoral neck after the set screw can fix a position first bone screw is locked, can also reset the hone lamella and fix to guarantee the femoral neck that the greater trochanter is connected and the stable connection of femoral neck that the femoral head is connected, also can twist and lock on the coaptation board through the guide pin with second bone screw, and form angulation stability to the thighbone near-end through auxiliary screw, it is fixed to reach stability, the recovery of the thighbone near-end of being convenient for. The utility model provides a thighbone near-end coaptation location combination can improve the precision that the thighbone neck resets through the first bone screw that sets up, and can adapt to the patient of thighbone variation in size, its simple structure, and the practicality is strong.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a first schematic structural view of a proximal femur bone-knitting positioning assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a proximal femur bone-knitting positioning assembly according to an embodiment of the present invention;
fig. 3 is a schematic view of a main view structure (hidden locking screw cap) of the proximal femur bone-knitting positioning assembly according to the embodiment of the present invention;
fig. 4 is a schematic structural (cross-sectional) view of a bone plate of a proximal femur bone-setting positioning assembly according to an embodiment of the present invention;
in the figure: 10. a bone plate; 11. a corner portion; 12. an edge portion; 13. a first threaded hole; 131. a large hole portion; 132. a small hole portion; 133. a transition structure; 14. a first screw hole; 15. a second screw hole; 20. a first bone screw; 21. a nut portion; 22. a screw section; 30. a set screw is fixed; 31. a locking screw; 32. an auxiliary screw; 40. locking a screw cap; 50. a second bone screw.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4, the proximal femur coaptation positioning assembly of the present invention will now be described. The proximal femur bone-setting positioning combination comprises a bone plate 10, a first bone screw 20, a locking screw cap 40 and a set screw 30. The bone plate 10 has a mounting surface adapted to the lateral surface of the proximal femur for mounting to the lateral surface of the proximal femur. At least one guide pin is arranged for penetrating into the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head in advance for guiding the first bone screw 20; the first bone screw 20 is provided with at least one, one end of the first bone screw 20 penetrates through the bone plate 10 and is connected with the bone plate 10 through a spherical hinge pair, the extending end part of the first bone screw 20 is used for being fixedly connected with a femoral neck connected with a femoral head, and the first bone screw 20 is used for accurately resetting and restoring the femoral neck connected with the femoral head and a greater trochanter. And the locking screw cap 40 is arranged on the outer side surface of the bone plate 10, is abutted against one end of the first bone screw 20, and is used for compressing and fixing the first bone screw 20 with a determined position. And the fixing screw group 30 is used for locking the femoral neck after the first bone screw 20 is positioned and fixing the bone plate 10. The bone fracture plate 10 is provided with a first threaded hole 13 for being in threaded fit with the locking screw cap 40, and one end of the first bone screw 20 is arranged in the first threaded hole 13.
The utility model provides a thighbone near-end coaptation location combination, the using-way is: firstly, the bone fracture plate 10 is arranged on the outer side of the proximal femur of a patient; a guide pin is penetrated through the first threaded hole 13, and then a first bone screw 20 is implanted through the first threaded hole 13, because the first bone screw 20 and the bone fracture plate are fixed in a universal manner, the implanted angle can be adjusted according to the fracture condition, so that accurate resetting and pressurization of the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head are ensured; after the resetting is finished, the guide pin is drawn out, the locking screw cap 40 is arranged in the first threaded hole 13 and compresses the first bone screw 20, so that the first bone screw 20 cannot rotate continuously; the second bone screw 50 is then implanted under the guidance of the lead while the set screw 30 is implanted to increase the stability of the connection. When the set screws 30 are all connected, the guide pin is withdrawn, and it should be noted that the guide pin is not connected to the bone plate 10 and is only used for guiding the first bone screws 20 and 50.
The utility model provides a thighbone near-end coaptation location combination, compared with the prior art, the utility model discloses thighbone near-end coaptation location combination major structure comprises coaptation board 10, guide pin, first coaptation screw 20, locking spiral shell lid 40 and set screw group 30, and the structure is comparatively simple. The mounting surface of the bone fracture plate 10 is matched and attached with the outer side surface of the proximal femur, and can be stably mounted on the outer side surface of the proximal femur. The bone plate 10 is provided with a first threaded hole 13, and a locking screw cap 40 can fix the first bone screw 20 to the bone plate 10. The guide pin may be threaded into the femoral neck along the first threaded hole 13 to facilitate threading guidance of the first bone screw 20. The first bone screw 20 is connected with the spherical hinge pair of the bone plate 10, and can rotate on the bone plate 10 by a certain angle by taking a connecting point as a spherical center, namely, the first bone screw can rotate universally relative to the bone plate 10, so that the first bone screw can penetrate into a femoral neck when the bone plate 10 is fixed, and can accurately reposition and position the femoral neck connected with the femoral head and the femoral neck connected with the greater trochanter. The lock nut can be placed on the bone plate 10 and can compress and fix the positioned first bone screw 20, ensuring that the first bone screw 20 does not rotate any more. The set screw 30 can lock the neck of femur after the first bone screw 20 is positioned, and can also reset the bone plate 10 for fixation, so as to ensure the stable connection of the neck of femur connected to the greater trochanter and the neck of femur connected to the femoral head, and facilitate the recovery of the neck of femur. The utility model provides a thighbone near-end coaptation location combination can improve the precision that the thighbone neck resets through the first bone screw 20 that sets up, and can adapt to the patient of thighbone variation in size, its simple structure, and the practicality is strong.
As a specific embodiment of the proximal femur bone-knitting positioning assembly provided by the present invention, please refer to fig. 1 to 4 together, the first threaded hole 13 includes a large hole portion 131 and a small hole portion 132, the large hole portion 131 is located at an end of the first threaded hole 13 away from the femur, the small hole portion 132 is located at an end of the first threaded hole 13 close to the femur, and an arc-shaped transition structure 133 for the ball-hinge pair connection of the first bone screw 20 is disposed at a joint of the large hole portion 131 and the small hole portion 132. This configuration prevents the first bone screw 20 from penetrating too much, and allows the locking screw 31 to be limited to some extent, while ensuring the rotation of the locking screw 31. The large hole portion 131 of the first threaded hole 13 is provided with an internal thread structure for being in threaded fit with the locking screw cap 40, and the locking screw cap 40 is provided with a thread structure for being in threaded fit with the first threaded hole 13. The large hole portion 131 of the first threaded hole 13 is provided with a thread structure, and the locking screw cap 40 is used for being in thread fit connection with the thread structure. The structure can ensure that the locking screw cap 40 can stably cover the first threaded hole 13 and is not easy to fall off, and meanwhile, the structure can also be convenient for the locking screw cap 40 to compress the first bone screw 20, so that the first bone screw 20 can not continue to rotate, and the relative sliding of the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head can not occur after accurate resetting.
As a specific implementation of the proximal femur bone-knitting positioning assembly provided by the embodiment of the present invention, please refer to fig. 1 to 4, the first bone screw 20 includes a screw cap portion 21 and a screw portion 22. The screw portion 22 has a threaded structure at its extended end for implanting into a femoral neck connected to a femoral head and being in threaded connection with the femoral neck connected to the femoral head, and the screw cap portion 21 has a spherical structure for being in spherical hinge connection with the first threaded hole 13. The screw part 22 penetrates through the femoral neck connected with the greater trochanter by the bone fracture plate 10 and is in sliding connection with the femoral neck connected with the greater trochanter, and the thread structure at one end of the screw part 22 penetrates through the femoral neck connected with the femoral head and is in thread fit connection with the femoral neck connected with the femoral head. The structure is that the thread structure is fixedly connected with the femoral neck connected with the femoral head, the femoral neck connected with the greater trochanter can slide on the smooth screw rod part 22, and the first bone screw 20 is a non-locking screw, thereby further ensuring that the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head can accurately reset and pressurize the fractured end.
As a specific implementation manner of the proximal femur bone-knitting positioning assembly provided in the embodiment of the present invention, please refer to fig. 1 to 4 together, the proximal femur bone-knitting positioning assembly further includes a second bone-knitting screw 50, the second bone-knitting screw 50 is used to sequentially pass through the bone plate 10, the femur neck connected to the greater trochanter and the femur neck connected to the femur head, so as to lock the femur neck after the first bone-knitting screw 20 is positioned; the second bone screws 50 and the first bone screws 20 are in an intersecting structure in the vertical direction and the horizontal direction of the bone plate. The screw portion of the second bone screw 50 is a full thread structure, and the bone plate 10 is provided with a second threaded hole for the second bone screw 50 to pass through, and has a hollow structure for the guide pin to pass through. The second bone screws 50 and the first bone screws 20 form a cross structure with different planes, i.e. an angle cross structure is formed in the vertical direction and the left-right direction of the bone plate 10. The second bone screw 50 is of a fixed structure, and can further lock the femoral neck after the first bone screw 20 is positioned, so as to ensure the positioning stability.
As a specific implementation of the proximal femur bone-knitting positioning assembly provided by the embodiment of the present invention, please refer to fig. 1 to 4, the set screw 30 includes a locking screw 31 and an auxiliary screw 32. At least two locking screws 31 are provided, and each locking screw 31 is arranged in a cross way with the first bone screw 20 in a different plane and is used for locking the femoral neck after the first bone screw 20 is positioned. A plurality of auxiliary screws 32 are arranged, the plurality of auxiliary screws 32 are arranged below the first bone screws 20 at intervals from top to bottom, and each auxiliary screw 32 penetrates through the bone plate 10 and the femoral shaft respectively. The locking screw 31 and the first bone screw 20 are arranged in a cross way in a non-coplanar manner, i.e. in an out-V-shaped structure. The cross arrangement ensures that the locking screw 31 and the first bone screw 20 can pass through the femoral neck due to the smaller diameter of the femoral neck. In addition, the non-coplanar arrangement can ensure that the opening parts at two sides of the intersection point of the first bone screw 20 and the locking screw 31 are larger, and can better lock and fix the femoral neck. At least two auxiliary screws 32 are provided, and the two auxiliary screws 32 are inserted through the bone plate 10 and the femoral shaft, respectively. The bone plate 10 can be repositioned for further fixation to ensure a stable connection of the femoral neck.
As a specific implementation manner of the proximal femur bone-knitting positioning assembly provided by the embodiment of the present invention, please refer to fig. 1 to 4 together, the locking screw 31 has a full-thread structure. The penetrating part of the locking screw 31 is of a full-thread structure, the full-thread structure can ensure that the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head cannot slide after restoration, and the restoration stability can be ensured. The auxiliary screw 32 has a full thread structure, which can ensure the stable fixation of the bone plate 10.
As a specific implementation manner of the proximal femur bone-knitting positioning assembly provided by the embodiment of the present invention, please refer to fig. 1 to 4 together, the diameter of the auxiliary screw 32 is smaller than the diameter of the locking screw 31, so that the installation of the auxiliary screw 32 can be facilitated, and meanwhile, the occupied space of the auxiliary screw 32 is small, and the trauma to the femur is small. A plurality of auxiliary screws 32 can be horizontally arranged, and the auxiliary screws 32 are mainly used for fixing the bone plate 10 to the femoral shaft, so that the structural strength of the proximal femur bone-setting positioning combination and the connection strength of the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head are further improved.
As a specific implementation manner of the proximal femur bone-knitting positioning assembly provided by the embodiment of the present invention, please refer to fig. 1 to 4, a plurality of first screw holes 14 for the locking screws 31 to pass through are provided on the bone plate 10, the number of the first screw holes 14 corresponds to the number of the locking screws 31, and the first screw holes 14 are opposite to the position of the greater trochanter. The bone plate 10 is further provided with a plurality of second screw holes 15 for the auxiliary screws 32 to pass through, the number of the second screw holes 15 corresponds to the number of the auxiliary screws 32, and the second screw holes 15 are opposite to the femoral shaft. The first screw hole 14 and the second screw hole 15 can facilitate the fixed connection of the locking screw 31 and the auxiliary screw 32.
In this embodiment, the position of the first screw hole 14 may be randomly selected according to the actual situation.
As an embodiment of the present invention, please refer to fig. 1 to 4 together, the second screw hole 15 is an elongated structure disposed from top to bottom, the elongated structure can facilitate the movement of the upper and lower positions of the auxiliary screw 32, and the bone fracture plate 10 can be moved up and down conveniently, so as to facilitate the adjustment of the installation error and facilitate the installation of the auxiliary screw 32.
As a specific implementation manner of the proximal femur bone-knitting positioning assembly provided by the embodiment of the present invention, please refer to fig. 1 to 4 together, the bone-knitting plate 10 is provided with a corner portion 11 located at the middle position of the bone-knitting plate 10 and edge portions 12 located at the two ends of the bone-knitting plate 10, the corner portion 11 is located at the connection position of the greater trochanter and the femoral shaft, because the connection position of the greater trochanter and the femoral shaft is provided with an inward concave structure, the corner portion is arranged at this position, the thickness of the corner portion 11 is greater than the thickness of the edge portion 12, and the first threaded hole 13 is arranged at the corner. The corner 11 can ensure the placement of the first threaded hole 13, and the structure can enable the first bone screw 20 to be inserted into the femoral head obliquely upwards, so that the first bone screw 20 can play a certain supporting role while being positioned accurately in universal rotation.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The proximal femur bone-setting positioning combination is characterized by comprising a bone-setting plate, a guide pin, a first bone-setting screw, a locking screw cap and a fixing screw group; wherein the content of the first and second substances,
the bone fracture plate is provided with a mounting surface matched with the outer side surface of the proximal femur and a locking hole for the fixing screw group to pass through, and is used for being mounted on the outer side surface of the proximal femur;
one end of the first bone screw is used for penetrating through the first threaded hole and the femoral neck connected with the greater trochanter and is fixedly connected with the femoral neck connected with the femoral head, the other end of the first bone screw is connected with the spherical hinge pair of the bone fracture plate and is used for universally rotating on the bone fracture plate so as to accurately reset and pressurize the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head, and the first bone screw is provided with a hollow structure for the guide pin to penetrate through;
the guide pin is provided with at least one guide pin, and is used for penetrating into the femoral neck connected with the greater trochanter and the femoral neck connected with the femoral head in advance so as to be used for guiding the first bone screw;
the locking screw cap is arranged in the first threaded hole, is abutted against one end of the first bone screw and is used for compressing and fixing the first bone screw after the position is determined; and
and the fixing screw group is used for locking the femoral neck after the first bone screw is positioned and fixing the bone fracture plate on the femur.
2. The proximal femoral bone positioning assembly of claim 1 wherein the first threaded bore is a counter-sunk structure having a large bore portion at an end of the first threaded bore distal to the femur and a small bore portion at an end of the first threaded bore proximal to the femur;
the large hole part of the first threaded hole is provided with an internal thread structure which is used for being in threaded fit with the locking screw cap, and the locking screw cap is provided with a thread structure which is used for being in threaded fit with the first threaded hole.
3. The proximal femoral osteosynthesis positioning assembly according to claim 2 wherein said first bone screw comprises a nut portion and a screw portion;
the screw cap part is provided with a spherical structure used for being connected with the first threaded hole spherical hinge pair.
4. The proximal femoral osteosynthesis positioning assembly of claim 3 further comprising a second bone screw adapted to pass through said osteosynthesis plate, the neck of the femur to which the greater trochanter is attached and the neck of the femur to which the femoral head is attached in sequence to lock the neck of the femur after positioning of said first bone screw; the second bone screw and the first bone screw are in an intercrossed structure in the vertical direction and the left-right direction of the bone fracture plate;
the screw rod part of the second bone screw is of a full thread structure, a second threaded hole for the second bone screw to pass through is formed in the bone fracture plate, and the hollow structure for the guide pin to pass through is formed.
5. The proximal femoral osteosynthesis positioning assembly according to one of claims 1 to 4 wherein said set screw group comprises:
the central axis of each locking screw and the central axis of the first bone screw are arranged in a cross way in a different plane, and the two locking screws are arranged in a divergent mode along the axial direction and used for locking the femoral neck after the first bone screw is positioned; and
and the auxiliary screws are arranged below the first bone screws at intervals from top to bottom, and each auxiliary screw penetrates through the bone fracture plate and the femoral shaft respectively.
6. The proximal femoral osteosynthesis positioning assembly according to claim 5 wherein said locking screw has a fully threaded shank portion and said auxiliary screw has a fully threaded shank portion.
7. The proximal femoral osteosynthesis positioning assembly according to claim 6 wherein the diameter of the shank of said auxiliary screw is smaller than the diameter of the shank of said locking screw.
8. The proximal femoral bone positioning assembly of claim 7, wherein the locking holes comprise a plurality of first screw holes for the passage of the locking screws and a plurality of second screw holes for the passage of the auxiliary screws; wherein the number of the first screw holes corresponds to the number of the locking screws, and the number of the second screw holes corresponds to the number of the auxiliary screws.
9. The proximal femoral osteosynthesis positioning assembly of claim 8 wherein said second screw hole is a slotted hole configuration.
10. The proximal femoral osteosynthesis positioning assembly according to any one of claims 1 to 4 wherein said plate is provided at a central position with a corner portion for opening said first threaded hole and at each end with a rim portion for smooth transition with the femur and greater trochanter, said corner portion being located at the junction of the greater trochanter with the femoral shaft, said corner portion having a thickness greater than the thickness of said rim portion;
the first threaded hole is disposed at the corner portion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926931.5U CN213156357U (en) | 2020-05-27 | 2020-05-27 | Proximal femur fracture positioning combination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020926931.5U CN213156357U (en) | 2020-05-27 | 2020-05-27 | Proximal femur fracture positioning combination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712654A (en) * | 2021-09-02 | 2021-11-30 | 中国人民解放军总医院第四医学中心 | Dynamic locking system for femoral neck |
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2020
- 2020-05-27 CN CN202020926931.5U patent/CN213156357U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712654A (en) * | 2021-09-02 | 2021-11-30 | 中国人民解放军总医院第四医学中心 | Dynamic locking system for femoral neck |
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Effective date of registration: 20231222 Address after: No. 18 Shanbian Hongdong Road, Haicang District, Xiamen City, Fujian Province, 361000 Patentee after: DOUBLE MEDICAL TECHNOLOGY Inc. Address before: 100191 No. 49 Garden North Road, Beijing, Haidian District Patentee before: PEKING University THIRD HOSPITAL (PEKING UNIVERSITY THIRD CLINICAL MEDICAL College) |