CN112932642B - Femoral internal fixation device for A3 type intertrochanteric fracture surgery - Google Patents
Femoral internal fixation device for A3 type intertrochanteric fracture surgery Download PDFInfo
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- CN112932642B CN112932642B CN202110336991.0A CN202110336991A CN112932642B CN 112932642 B CN112932642 B CN 112932642B CN 202110336991 A CN202110336991 A CN 202110336991A CN 112932642 B CN112932642 B CN 112932642B
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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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- 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
-
- 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
- A61B17/746—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 a plate opposite the femoral head
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The invention relates to a femoral internal fixation device for an A3 type intertrochanteric fracture surgery operation, which comprises a main nail, a head and neck nail, a sliding steel plate and a shear buffering assembly, wherein the main nail is provided with an proximal end intersection hole, the head and neck nail penetrates through the proximal end intersection hole, the entrance end of the proximal end intersection hole is a kidney-shaped hole, the exit end of the proximal end intersection hole is a circular hole, the head and neck nail can rotate at a small angle in the proximal end intersection hole, the main nail is provided with a locking hole, the shear buffering assembly comprises an extrusion block, an elastic piece and a tail cap, and the extrusion block is abutted against the head and neck nail through screwing threads between the tail cap and the proximal end locking hole. According to the invention, the intramedullary nail is coupled with the sliding steel plate, so that the fracture broken end can be dynamically pressurized when the limb is loaded, and the shearing stress of an internal fixture is reduced; the shearing stress between the main nail and the head and neck nail is converted into vertical stress, so that fatigue fracture of the main nail is avoided; when the shearing stress is larger, the head and neck nails rotate, and the stress is transmitted to the sliding steel plate, so that the risk of internal fixation failure is reduced.
Description
Technical Field
The invention relates to the technical field of medical surgical instruments, in particular to a femoral internal fixation device for hip fracture surgery, which is further used for an intramedullary nail-steel plate system for unstable intertrochanteric fracture.
Background
Currently, the intertrochanteric fracture (or intertrochanteric fracture) is fixed clinically mainly through intramedullary nails, dynamic Hip (DHS) steel plates, locking pressurizing steel plates and the like. However, the initial stability after the reduction of the unstable intertrochanteric fracture is maintained by an internal fixation object, fatigue fracture is easily caused by using the current internal fixation devices, and the internal fixation failure rate is calculated to be 18-55%. Especially, the reverse oblique fracture or the A3 type intertrochanteric fracture has high postoperative failure rate no matter how the internal fixation is selected except for the difficulty in reduction and fixation of the fracture.
The main clinical operation fixing instruments for the intertrochanteric fracture of the femur currently comprise: a proximal intramedullary nail of the femur; dynamic hip steel plate; locking the pressed steel plate.
The internal fixation device can often obtain ideal effects for stable intertrochanteric fracture, but has high failure rate for unstable fracture, especially for A3 intertrochanteric fracture, and mainly has the following defects:
1. the fracture end cannot be effectively pressurized;
2. the shearing stress cannot be effectively resisted, and the shearing stress moment arm is long;
3. the internal fixation after operation has stress concentration and is easy to fatigue fracture;
4. lack of a stable mechanism to effectively prevent displacement of the fractured bone end makes internal fixture cuts the femoral head easily.
Disclosure of Invention
The invention aims to provide a femur internal fixation device for an A3 type intertrochanteric fracture surgery, which realizes dynamic pressurization of the A3 type intertrochanteric fracture through an elastic angle power intramedullary nail coupling structure, shares shearing stress and reduces fatigue level, thereby solving the problems.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a femoral internal fixation device for fracture surgery between A3 type rotor, includes main nail, neck nail, sliding steel board and shear force buffer unit, the radial upward run through of main nail sets up an near-end cross-hole, the neck nail passes the near-end cross-hole, the entering end of near-end cross-hole is waist shape hole, the exit end be with circular hole homodiameter's circular hole, the neck nail have with circular hole assorted diameter, and can be in the waist shape downthehole rotation of near-end cross-hole, the sliding steel board sets up the tip that the neck nail passed the near-end cross-hole, the one end that the main nail is close to the near-end cross-hole is provided with the locking hole, the locking hole extends along the axial and is linked together with the near-end cross-hole, shear force buffer unit includes extrusion piece, elastic component and tail cap, set up the screw thread that articulates between tail cap and the near-end cross-hole, the elastic component sets up the distal end at the near-end cross-hole, the elastic component sets up between tail cap and extrusion piece, through screw thread, the tail cap promotes extrusion piece drive extrusion piece and makes and still have the sliding steel board to set up between the main nail and the distal end.
Further, the small angle is 0-5 °.
Further, the sliding steel plate is provided with a screw through hole, the main nail is provided with a far-end interlocking hole with the same length, and the far-end screw penetrates through the screw through hole and can be arranged in the far-end interlocking hole in a micro-motion mode.
Further, the elastic member is a compression spring or rubber.
Further, the sliding steel plate is provided with a working surface perpendicular to the axis of the head and neck nails, and the working surface is provided with through holes matched with the head and neck nails in size.
Further, the tail part of the head and neck nail is an inclined plane parallel to the sliding steel plate.
Further, the extrusion block is provided with a contact surface matched with the nail body of the head and neck nail in size.
The invention has the technical effects that:
1. according to the invention, through the combined application of the main nails, the head and neck nails, the sliding steel plate and the shear buffer assembly, the dynamic compression of the fracture between the A3 rotors is realized, and the problem that the fracture end cannot be effectively compressed in the prior art is solved;
2. the invention can reduce the shearing stress arm of force and share the shearing stress through the shearing buffer component, thus solving the problems that the shearing stress cannot be effectively resisted and the shearing stress arm of force is longer in the prior art;
3. the invention can share stress at multiple parts such as the main nail, the sliding steel plate, the shear buffer assembly and the like, avoids stress concentration and fatigue fracture, and solves the problems of stress concentration and easy fatigue fracture of internal fixtures after operation in the prior art;
4. the invention can stabilize fracture in all directions, and solves the problems that the prior art lacks a stabilizing mechanism for effectively preventing the fracture end from shifting and the internal fixture is easy to cut the femoral head.
In a word, the combined application of the main nail, the head and neck nail, the sliding steel plate and the shear buffering component enables the intramedullary nail to be coupled with the sliding steel plate, so that the fracture end of the A3 type intertrochanteric fracture can be effectively pressurized when limbs are loaded, and the shear stress of internal fixtures is reduced; meanwhile, the shearing stress between the main nail and the head and neck nail is converted into the vertical stress with good buffer effect between the head and neck nail and the tail cap of the main nail, so that the fatigue fracture of the main nail is avoided; when the shearing stress is larger, the head and neck nail rotates by taking the inner side arm of the main nail as the axis, and the stress is transferred to the sliding steel plate, so that the stress is shared, and the risk of internal fixation failure caused by stress concentration is reduced.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a diagram of related diseases according to the present invention;
FIG. 4 is a schematic view of the present invention in vivo;
FIG. 5 is a front view of the main staple;
FIG. 6 is a top view of the main staple;
FIG. 7 is a bottom view of the main staple;
FIG. 8 is a front view of the extrusion block;
FIG. 9 is a top view of the extrusion block;
FIG. 10 is a front view of the tail cap;
fig. 11 is a schematic view of the change in angular displacement of the main nail.
Reference numerals illustrate:
1-a main nail; 2-head and neck nails; 3-sliding steel plates; 4-a shear buffer assembly; 5-an inbred mating hole; 6-a circular hole; 7-waist-shaped holes; 8-locking holes; 9-extruding a block; 10-an elastic member; 11-tail cap; 12-distal screws; 13-internal threads; 14-external threads;
15-screw vias; 16-distal interlocking hole; 17-working surface; 18-via holes; 19-inclined plane; 20-contact surface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the foregoing description of the invention, it should be noted that the azimuth or positional relationship indicated by the terms "one side", "the other side", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "identical" and the like do not denote that the components are identical, but rather that there may be minor differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel" and does not mean that the structure must be perfectly perpendicular, but may be slightly tilted.
As shown in fig. 1-11, an embodiment provides a femoral internal fixation device for an A3 type intertrochanteric fracture surgery operation, including a main nail 1, a head and neck nail 2, a sliding steel plate 3 and a shear buffer assembly 4, an proximal interlocking hole 5 is radially penetrating and arranged on the main nail, the head and neck nail penetrates through the proximal interlocking hole, an entering end of the proximal interlocking hole is a kidney-shaped hole 7, an exit end is a circular hole 6 with the same diameter as the circular hole, the head and neck nail has a diameter matched with the circular hole, the head and neck nail is arranged in the proximal interlocking hole and can rotate around the exit end along a kidney Kong Zuoxiao angle to realize angle change, the sliding steel plate is arranged at the end of the head and neck nail penetrating through the proximal interlocking hole, when the head and neck nail rotates along the entering end, in particular, one end of the main nail, which is close to the proximal interlocking hole, is provided with a locking hole 8, the locking hole extends along the axial direction and is in communication with the proximal interlocking hole, the buffer assembly comprises an extrusion block 9, an elastic piece 10 and a tail cap 11, a screwing thread is arranged between the tail cap and the proximal locking hole, the extrusion block is arranged at the end and the end is close to the distal end of the extrusion block, namely, the extrusion block is also arranged between the extrusion block and the shear buffer assembly, namely, the extrusion block is arranged at the head and neck nail, and the shear buffer assembly.
The working principle of the embodiment is as follows: when limbs are loaded, the head and neck nails rotate along the side of the elastic part of the main nail, the elastic part is stressed, the force is transmitted to the tail cap, and the tail cap transmits the force to the main nail through the thread pair, so that the force transmission is realized. The transmission of the shearing force is realized through the buffering of elastic angular power, so that the shearing hazard is greatly reduced, meanwhile, when the load is larger, the angle change is larger, the elastic counter force is larger, a continuous change system is formed, and compared with a discrete system, the impact is smoother, the impact is also greatly reduced, and the service life of the device is prolonged.
The resilient member of this embodiment may be a compression spring or rubber, preferably a high rate spring, which can withstand relatively large loads under comparable deformation conditions. In addition, the present embodiment also considers the following extreme cases:
when the shearing stress acting on the head and neck nails is large enough, and the deformation force of the spring cannot resist the shearing acting force, at the moment, the head and neck nails rotate to the limit position of the kidney-shaped hole, the distal ends of the head and neck nails are abutted against the sliding steel plate, part of acting force is transmitted to the sliding steel plate, the sliding steel plate enables the distal folded ends to shift towards the proximal ends through the distal screws, tension band effects are generated, the pressure on the broken ends is realized, further increase of the shearing stress is prevented, fracture is stabilized, and meanwhile, the fracture early healing is facilitated by the stress stimulation in the vertical direction.
In this embodiment, the screwing thread includes an internal thread 13 disposed in the main screw locking hole and an external thread 14 disposed in the tail cap, and the compression of the compression block and the transmission of force are realized by the cooperation of the external thread and the internal thread.
As an improvement of the embodiment, the initial axis of the head and neck nail is 130 degrees relative to the central axis of the main nail, and the included angle between the head and neck nail and the head and neck nail is 125 degrees when the head and neck nail rotates to the limit position, namely, the small angle in the embodiment is 0-5 degrees. At this time, an appropriate angular displacement range is provided, and no side effects on the joint are ensured.
As a modification of the present embodiment, a screw through hole 15 is provided in the sliding steel plate, a distal end interlocking hole 16 having the same length is provided in the main screw, and the distal end screw is disposed in the distal end interlocking hole in a micro-movable manner through the screw through hole. To achieve this, the distal interlocking hole may be a kidney-shaped hole or an annular racetrack-shaped hole, so that the holes are spaced apart in a certain direction to adjust the position, and of course, a screw may be disposed at the distal end of the interlocking hole, and the intraoperative distal screw may be locked to the distal end of each hole. So that no acting force is generated between the main nail and the distal locking nail in the process of pressing the screw
The number of distal screws is not limited in this embodiment, but two are preferred.
As a modification of this embodiment, the sliding steel plate is provided with a working face 17 perpendicular to the head and neck nail axis, and the working face is provided with a through hole 18 of a size matching the head and neck nail. The through holes are perpendicular to the head and neck nails, stress conducted by the head and neck nails is easy to receive, and compared with other angles, the effect is better, and meanwhile the sliding steel plate can slide towards the proximal end conveniently. The obvious effects of the sliding steel plate are as follows: 1. sharing the shear stress acting on the main nail; 2. generating a tension band effect, and pressurizing the fracture broken end through a screw; 3. as a stress steel plate, the proximal fracture block is blocked from being displaced to the outside.
As an improvement of the present embodiment, in view of the fact that the head and neck nail tail is to be connected with a steel plate, the tail notch is relatively large, and the head and neck nail tail can be designed as an inclined surface 19 parallel to the sliding steel plate so as to reduce the irritation of the head and neck nail tail to external soft tissues.
As an improvement of the embodiment, the extrusion block is provided with a contact surface 20 matched with the nail body of the head and neck nail, namely an arc concave surface, so that the contact area of the extrusion block and the head and neck nail is increased, the contact pressure is reduced, the stress level is improved, and the service life is prolonged.
Although the embodiment is more complicated in design and more in parts, the complexity only exists in the design and manufacturing process, and the method is basically similar to a conventional intramedullary nail or DHS operation method in the clinical application process, does not additionally increase the technical requirements of clinicians, and has higher popularization and application values.
The embodiment skillfully converts the shearing stress between the main nail and the head and neck nail into the vertical stress with good buffer effect between the head and neck nail and the main nail tail cap, and can avoid fatigue fracture of the main nail in design; when the shearing stress is larger, the head and neck nail rotates by taking the inner side arm of the main nail as the axis, and the stress is transferred to the sliding steel plate screw.
Clinically, the invention has remarkable effect on A3 type intertrochanteric fracture and also has good effect on intertrochanteric fracture accompanied with defects of inner and outer side wall bones or involving subtrochanter.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (5)
1. An internal femoral fixation device for use in A3-type intertrochanteric fracture surgery, comprising: including main nail, neck nail, sliding steel plate and shear force buffer assembly, run through in the radial of main nail and set up an near-end cross-locking hole, the neck nail passes the near-end cross-locking hole, the entering end of near-end cross-locking hole is waist shape hole, the exit end be with circular hole homodiameter's circular hole assorted diameter, and can be in the waist shape downthehole rotation that is of near-end cross-locking hole, the sliding steel plate sets up the tip that passes the near-end cross-locking hole at the neck nail, the one end that the main nail is close to the near-end cross-locking hole is provided with the locking hole, the locking hole extends along the axial and is in communication with the near-end cross-locking hole, shear force buffer assembly includes extrusion piece, elastic component and tail cap and near-end cross-locking hole between set up screw, the extrusion piece sets up the distal end at the near-end cross-locking hole, the elastic component set up between tail cap and extrusion piece, through screwing screw, tail cap drive elastic component promotes extrusion piece, makes extrusion piece support lean on the neck nail, the sliding steel plate is provided with the cross-locking hole, the cross-locking hole is provided with the annular cross-locking hole with the far-end, the cross-locking hole is provided with the cross-locking hole, the cross-locking hole is provided with the annular, the cross-locking hole with the long-shaped screw.
2. An intra-femoral fixation device for use in a type A3 intertrochanteric fracture surgery as in claim 1, wherein: the small angle is 0-5 degrees.
3. An intra-femoral fixation device for use in a type A3 intertrochanteric fracture surgery as in claim 1, wherein: the elastic piece is a compression spring or rubber.
4. An intra-femoral fixation device for use in a type A3 intertrochanteric fracture surgery as in claim 1, wherein: the tail of the head and neck nail is an inclined plane parallel to the sliding steel plate.
5. An intra-femoral fixation device for use in a type A3 intertrochanteric fracture surgery as in claim 1, wherein: the extrusion block is provided with a contact surface matched with the nail body of the head and neck nail in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336991.0A CN112932642B (en) | 2021-03-29 | 2021-03-29 | Femoral internal fixation device for A3 type intertrochanteric fracture surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110336991.0A CN112932642B (en) | 2021-03-29 | 2021-03-29 | Femoral internal fixation device for A3 type intertrochanteric fracture surgery |
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| CN112932642A CN112932642A (en) | 2021-06-11 |
| CN112932642B true CN112932642B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110336991.0A Active CN112932642B (en) | 2021-03-29 | 2021-03-29 | Femoral internal fixation device for A3 type intertrochanteric fracture surgery |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115624377B (en) * | 2022-12-08 | 2023-04-11 | 北京大学人民医院 | Intramedullary nail system of bionic outer side wall of proximal femoral fracture |
| CN116746999B (en) * | 2023-06-08 | 2024-03-05 | 中国人民解放军总医院第六医学中心 | Proximal plate-shaped intramedullary nail for comminuted intertrochanteric fracture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746885Y (en) * | 2005-01-13 | 2005-12-21 | 朱文川 | Automatically and continuously pressing type intramedullary nail |
| EP2730243A1 (en) * | 2012-11-09 | 2014-05-14 | Denis Pichon | Osteosynthesis device for treating fractures of the femoral neck |
| CN109171934A (en) * | 2018-10-12 | 2019-01-11 | 陆海波 | The inner fixing device and application method for treating complicated intertrochanteric fracture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7018380B2 (en) * | 1999-06-10 | 2006-03-28 | Cole J Dean | Femoral intramedullary rod system |
| DE59908678D1 (en) * | 1999-12-03 | 2004-04-01 | Synthes Ag | INTRAMEDULLÄRER BRAND NAIL |
-
2021
- 2021-03-29 CN CN202110336991.0A patent/CN112932642B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746885Y (en) * | 2005-01-13 | 2005-12-21 | 朱文川 | Automatically and continuously pressing type intramedullary nail |
| EP2730243A1 (en) * | 2012-11-09 | 2014-05-14 | Denis Pichon | Osteosynthesis device for treating fractures of the femoral neck |
| CN109171934A (en) * | 2018-10-12 | 2019-01-11 | 陆海波 | The inner fixing device and application method for treating complicated intertrochanteric fracture |
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