CN219461355U - Proximal femur flexible triangular support fixing system - Google Patents
Proximal femur flexible triangular support fixing system Download PDFInfo
- Publication number
- CN219461355U CN219461355U CN202223171753.8U CN202223171753U CN219461355U CN 219461355 U CN219461355 U CN 219461355U CN 202223171753 U CN202223171753 U CN 202223171753U CN 219461355 U CN219461355 U CN 219461355U
- Authority
- CN
- China
- Prior art keywords
- rod
- rod piece
- proximal femur
- triangular support
- bone plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a proximal femur flexible triangular support fixing system, which comprises a bone plate, wherein the bone plate is matched with the outer side of a femur tuberosity and is used for being attached to the femur tuberosity; the first rod piece is arranged in the middle of the bone plate in a penetrating way and is used for being inserted into the femoral head obliquely upwards, a through hole is formed in the middle of the first rod piece, and the central axis of the through hole and the axis of the first rod piece are intersected to form an acute angle; the second rod piece is arranged on the upper part of the bone plate in a penetrating way and is used for transversely penetrating into the femoral head, and the second rod piece is arranged in the through hole in a penetrating way; the first rod piece and the second rod piece are respectively provided with a cutting line which is spirally arranged, and the cutting line penetrates through the rod walls of the first rod piece and the second rod piece, so that the first rod piece and the second rod piece have elasticity. According to the utility model, the bone plate, the first rod piece and the second rod piece are used for fixing the proximal femur fracture, a firm triangular locking mechanism can be formed without opening a marrow cavity, and the first rod piece and the second rod piece are provided with spiral cutting lines which have elasticity, so that the fracture risk of the second rod piece is reduced.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a proximal femur flexible triangular support fixing system.
Background
The triangular support intramedullary nail system and the femur neck power anti-rotation system are modes for treating femur proximal fracture. The triangular support intramedullary nail system has the advantages that the fixation is stable, the supporting point is positioned at the intersection point to shorten the force arm, the triangular area formed by the intersection screw can prevent relative rotation between the broken femoral head and the femoral stem, the intramedullary nail is implanted in the intramedullary cavity, the damage to surrounding soft tissues and the inside of the femur is serious, the diameter of the transverse nail is limited by the intersection hole on the oblique nail and cannot be too thick, the oblique nail is retracted leftwards and downwards along with the oblique nail when the femoral head pressure is overlarge, and the transverse nail is easy to break after bearing all the pressure. The femur neck dynamic rotation-preventing system is relatively small and exquisite, can be implanted in a minimally invasive manner, does not need to open a marrow cavity, and has small damage to surrounding soft tissues and bones. However, the distance between the power rod and the anti-backing screw is short, so that the anti-rotation effect is poor due to the small triangular area, the anti-backing screw is completely fixed on the power rod, the stress cannot be dispersed, and the postoperative power rod is easily broken due to stress concentration. The distal transverse fixing screw of the femoral neck dynamic anti-rotation system can only assist in stabilizing the external fixing plate due to being disjointed with the fracture line, but has no actual fixing effect on the fracture line.
Thus, there is a need for a proximal femoral flexible triangular support fixation system that does not require opening of the intramedullary canal and that is not prone to breakage.
Disclosure of Invention
The utility model aims to provide a proximal femur flexible triangular support fixing system which can form a firm triangular locking mechanism without opening a marrow cavity and is not easy to break.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a proximal femur flexible triangular support fixation system comprising:
the bone plate is matched with the outer side of the femur tuberosity and is used for being attached to the femur tuberosity;
the first rod piece is arranged in the middle of the bone plate in a penetrating way and is used for being inserted into the femoral head obliquely upwards, a through hole is formed in the middle of the first rod piece, and the central axis of the through hole and the axis of the first rod piece intersect at an acute angle;
the second rod piece is arranged on the upper part of the bone plate in a penetrating way and is used for transversely penetrating into the femoral head, and the second rod piece is arranged in the through hole in a penetrating way;
the first rod piece and the second rod piece are respectively provided with a cutting line which is spirally arranged, and the cutting line penetrates through the rod walls of the first rod piece and the second rod piece, so that the first rod piece and the second rod piece have elasticity.
As a preferable scheme of the proximal femur flexible triangular support fixing system, the helix angle of the cutting line is 20-60 degrees.
As a preferable scheme of the proximal femur flexible triangular support fixing system, the cutting line is in a sine waveform or a bell waveform.
As a preferable scheme of the above proximal femur flexible triangular support fixing system, the cutting line of the first rod member includes a first cutting line and a second cutting line which are disposed at intervals, and the first rod member between the first cutting line and the second cutting line is provided with the through hole.
As a preferable scheme of the proximal femur flexible triangular support fixing system, the first rod is a lag screw and comprises a first nut and a first rod portion, the first rod portion comprises a first polish rod portion and a first thread portion, and the first thread portion is located at one end, far away from the first nut, of the first rod portion.
As a preferable scheme of the proximal femur flexible triangular support fixing system, a guide tube is arranged in the middle of the inner side surface of the bone plate, the first rod piece is arranged in the guide tube in a penetrating mode, a limiting periphery is arranged in the guide tube, and a first nut of the first rod piece is abutted to the limiting periphery and used for limiting the distance of implantation of the first rod piece into the proximal femur.
As a preferred embodiment of the above proximal femur flexible triangular support fixing system, the first nut of the first rod member can be sunk into the guide tube.
As a preferable scheme of the proximal femur flexible triangular support fixing system, the second rod is a lag screw and comprises a second nut and a second rod part, the second rod part comprises a second polished rod part and a second thread part, the second thread part is positioned at one end of the second rod part far away from the second nut, and a continuous third cutting line is arranged on the second polished rod part.
As a preferable scheme of the proximal femur flexible triangular support fixing system, a locking nail is further arranged on the lower portion of the bone plate in a penetrating mode, and the locking nail is parallel to the second rod piece.
The beneficial effects of the utility model are as follows: through bone plate and first member and with the second member is fixed the proximal femur fracture, this proximal femur flexible triangle support fixing system need not to open the marrow chamber and just can form firm triangle locking mechanical system to be provided with first member and second member in this system and set up spiral cutting line and have elasticity, after implanting, if first member and second member receive when great impact force, can self elasticity absorb the impact force between first member and the second member, prevent that the through-hole edge from causing the indentation to the second member, reduce the fracture risk of second member.
Drawings
Fig. 1 is a schematic structural view of a proximal femur flexible triangular support fixation system in accordance with an embodiment of the present utility model.
Fig. 2 is a cross-sectional view of a flexible triangular support intramedullary nail in an embodiment of the utility model.
Fig. 3 is a cross-sectional view of a bone plate in an embodiment of the utility model.
Fig. 4 is a schematic structural view of the first rod member in the embodiment of the present utility model.
Fig. 5 is a schematic structural view of the second rod in the embodiment of the present utility model.
1. A bone plate; 11. a guide tube; 111. limiting the periphery; 12. a first hole; 13. a second hole;
2. a first rod member; 21. a first nut; 22. a first lever portion; 221. a first polish rod portion; 222. a first threaded portion; 23. a first cutting line; 24. a second cutting line; 25. a through hole;
3. a second rod member; 31. a second nut; 32. a second lever portion; 321. a second polish rod portion; 322. a second threaded portion; 33. a third cutting line;
4. and (5) locking nails.
Detailed Description
The utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the same and to refer to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or other elements or groups thereof.
In order to achieve the above object, the present utility model adopts the following technical scheme.
As shown in fig. 1-5, the present embodiment provides a proximal femur flexible triangular support fixation system comprising a bone plate 1, a first rod 2, and a second rod 3. Wherein, bone plate 1 matches with the femur tuberosity outside for laminating in the femur tuberosity department. The first rod piece 2 is arranged in the middle of the bone plate 1 in a penetrating way and is used for being inserted into the femoral head obliquely upwards, a through hole 25 is formed in the middle of the first rod piece 2, and the central axis of the through hole 25 and the axis of the first rod piece 2 intersect to form an acute angle. The second rod 3 is arranged on the upper part of the bone plate 1 in a penetrating way and is used for transversely penetrating into the femoral head, and the second rod 3 is arranged in the through hole 25 in a penetrating way. The first rod member 2 and the second rod member 3 are respectively provided with a cutting line which is spirally arranged, and the cutting line penetrates through the rod walls of the first rod member 2 and the second rod member 3, so that the first rod member 2 and the second rod member 3 have elasticity.
The proximal femur flexible triangular support fixing system in this embodiment fixes proximal femur fracture through the bone plate 1 and the first rod 2 and with the second rod 3, and the proximal femur flexible triangular support fixing system can form a firm triangular locking mechanism without opening a intramedullary cavity, and the system is provided with the first rod 2 and the second rod 3, and the spiral cutting line is provided with elasticity, so that after implantation, if the first rod 2 and the second rod 3 are subjected to a large impact force, the system can elastically absorb the impact force between the first rod 2 and the second rod 3, prevent the edge of the through hole 25 from causing an indentation on the second rod 3, and reduce the fracture risk of the second rod 3.
In this embodiment, the helix angle of the cutting line is 20 to 60 °. The cutting line is in a sine waveform or a bell waveform, and can be selected according to specific situations.
As shown in fig. 4, the first rod 2 is a lag screw, and includes a first nut 21 and a first rod portion 22, the first rod portion 22 includes a first polished rod portion 221 and a first threaded portion 222, and the first threaded portion 222 is located at an end of the first rod portion 22 away from the first nut 21. The cutting lines of the first rod member 2 include a first cutting line 23 and a second cutting line 24 which are disposed at intervals, the first cutting line 23 and the second cutting line 24 are disposed on the first rod portion 22, specifically, on the first polished rod portion 221, and a through hole 25 is disposed on the first rod member 2 between the first cutting line 23 and the second cutting line 24. The fact that no cutting line is arranged at the through hole 25 ensures that the first rod piece 2 has good supporting force so as to ensure that fracture is fixed better.
As shown in fig. 3, a guide tube 11 is disposed in the middle of the inner side surface of the bone plate 1, the first rod 2 is inserted into the guide tube 11, a limiting periphery 111 is disposed in the guide tube 11, and a first nut 21 of the first rod 2 abuts against the limiting periphery 111 to limit the distance of the first rod 2 implanted into the proximal femur. The guide tube 11 can guide and limit the first rod member 2 during implantation, so as to ensure the accuracy of the implantation position.
The first screw cap 21 of the first rod member 2 can be sunk into the guide tube 11 to avoid the irritation to soft tissues caused by the protrusion of the outer surface of the bone plate 1.
As shown in fig. 5, the second rod 3 is a lag screw, and includes a second nut 31 and a second rod portion 32, the second rod portion 32 includes a polish rod portion and a threaded portion, the second threaded portion 322 is located at one end of the second rod portion 32 far away from the second nut 31, and a continuous third cutting line 33 is provided on the second polish rod portion 321.
In other embodiments, the first rod 2 and the second rod 3 may be polished rods or rods with longitudinal grooves or longitudinal ridges, or may be rods with a blade structure at the front end, or may be other types of rods that can fix the proximal end of the femur.
The lower part of the bone plate 1 is also penetrated with a locking nail 4, and the locking nail 4 is parallel to the second rod piece 3.
As shown in fig. 3, the bone plate 1 further comprises a first hole 12 and a second hole 13. The first hole 12 is located at the upper part of the bone plate 1, the first hole 12 is provided with an internal thread and is screwed with the second nut 31 of the second rod 3. The second hole 13 is positioned at the lower part of the bone plate 1, the second hole 13 is a countersunk light hole, and the second hole 13 is matched with the head part of the locking nail 4.
In the use process, the bone plate 1 is attached to the femur tuberosity; then the first rod piece 2 is inserted into the femoral head obliquely upwards through the guide tube 11; the second rod 3 sequentially passes through the first hole 12 of the bone plate 1 and the through hole 25 of the first rod 2, and is matched with the first rod 2 and the bone plate 1 to form a triangular locking mechanism. Since the cutting lines are arranged on the first rod piece 2 and the second rod piece 3, the first rod piece 2 and the second rod piece 3 have elasticity, after implantation, if the first rod piece 2 and the second rod piece 3 are subjected to larger impact force, the impact force between the first rod piece 2 and the second rod piece 3 can be absorbed by the self elasticity, the edge of the through hole 25 is prevented from causing indentation on the second rod piece 3, and the fracture risk of the second rod piece 3 is reduced.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (9)
1. Proximal femur flexible triangular support and fixation system, characterized by comprising:
a bone plate (1) matched with the outer side of the femur tuberosity and used for being attached to the femur tuberosity;
the first rod piece (2) is arranged in the middle of the bone plate (1) in a penetrating way and is used for being inserted into the femoral head obliquely upwards, a through hole (25) is formed in the middle of the first rod piece (2), and the central axis of the through hole (25) and the axis of the first rod piece (2) intersect to form an acute angle;
a second rod piece (3) which is arranged on the upper part of the bone plate (1) in a penetrating way and is used for transversely penetrating into the femoral head, and the second rod piece (3) is arranged in the through hole (25) in a penetrating way;
the first rod piece (2) and the second rod piece (3) are respectively provided with a cutting line which is spirally arranged, and the cutting line penetrates through the rod walls of the first rod piece (2) and the second rod piece (3), so that the first rod piece (2) and the second rod piece (3) have elasticity.
2. The proximal femur flexible triangular support fixation system of claim 1, wherein the helix angle of the cut line is 20-60 °.
3. The proximal femur flexible triangular support fixation system of claim 1, wherein the cut line has a sinusoidal waveform, a bell-shaped waveform.
4. The proximal femur flexible triangular support fixation system according to claim 1, wherein the cut lines of the first rod (2) comprise a first cut line (23) and a second cut line (24) arranged at intervals, the first rod (2) between the first cut line (23) and the second cut line (24) being provided with the through hole (25).
5. The proximal femur flexible triangular support fixation system of claim 1, wherein the first rod (2) is a lag screw comprising a first nut (21) and a first rod portion (22), the first rod portion (22) comprising a first polished rod portion (221) and a first threaded portion (222), the first threaded portion (222) being located at an end of the first rod portion (22) remote from the first nut (21).
6. The proximal femur flexible triangular support fixing system according to claim 5, wherein a guide tube (11) is provided in the middle of the inner side surface of the bone plate (1), the first rod (2) is inserted into the guide tube (11), a limiting peripheral edge (111) is provided in the guide tube (11), and a first nut (21) of the first rod (2) abuts against the limiting peripheral edge (111) for limiting the distance of implantation of the first rod (2) into the proximal femur.
7. The proximal femur flexible triangular support fixation system according to claim 6, wherein the first nut (21) of the first rod (2) is able to sink inside the guide tube (11).
8. The proximal femur flexible triangular support fixing system according to claim 1, wherein the second rod (3) is a lag screw, comprising a second nut (31) and a second rod portion (32), the second rod portion (32) comprises a second polished rod portion (321) and a second threaded portion (322), the second threaded portion (322) is located at one end of the second rod portion (32) far away from the second nut (31), and a continuous third cutting line (33) is provided on the second polished rod portion (321).
9. The proximal femur flexible triangular support fixation system as in claim 1, wherein the lower portion of the bone plate (1) is further threaded with a locking pin (4), the locking pin (4) being parallel to the second rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223171753.8U CN219461355U (en) | 2022-11-29 | 2022-11-29 | Proximal femur flexible triangular support fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223171753.8U CN219461355U (en) | 2022-11-29 | 2022-11-29 | Proximal femur flexible triangular support fixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219461355U true CN219461355U (en) | 2023-08-04 |
Family
ID=87460442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223171753.8U Active CN219461355U (en) | 2022-11-29 | 2022-11-29 | Proximal femur flexible triangular support fixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219461355U (en) |
-
2022
- 2022-11-29 CN CN202223171753.8U patent/CN219461355U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4468814B2 (en) | Fixation system consisting of nails and screws to improve the fixation of proximal fractures of the humerus | |
| ES2439870T3 (en) | Bone screw | |
| US8267977B2 (en) | Canulated titanium implant for correcting flat feet in children | |
| US7325470B2 (en) | Self-centering screw and retaining screw driver for use in surgery | |
| US5658288A (en) | Universal dynamic compression device for intramedullary system | |
| KR101216245B1 (en) | Osteosynthetic device | |
| MXPA02011712A (en) | Humeral spiral blade. | |
| EP0551588A1 (en) | Intramedullary nail for treating fractures of the proximal femur | |
| CN202146355U (en) | Femoral proximal triangular intramedullary nail | |
| US20050137598A1 (en) | Self-drilling bone screw | |
| JPH11216147A (en) | Fixing tool | |
| CN202235646U (en) | Proximal femoral anatomical locking plate | |
| CN211381692U (en) | Internal fixation system for treating femoral neck fracture | |
| CN219461355U (en) | Proximal femur flexible triangular support fixing system | |
| CN211633533U (en) | Blunt-end pedicle screw for spinal surgery | |
| CN110279447B (en) | Combined spiral reinforced bone anchor | |
| CN113456139B (en) | Non-absorbable suture anchor | |
| CN216495571U (en) | Internal fixing device for fracture fusion operation of calcaneus and talus | |
| ES2469872T3 (en) | Bone screw | |
| CN219230081U (en) | Proximal femur fracture fixation system | |
| CN215129915U (en) | Steel plate supporting fracture fixing system | |
| CN215651472U (en) | Self-drilling headless hollow screw device system | |
| US20060135960A1 (en) | Bone screw comprising a tangential cutting edge | |
| CN215079513U (en) | Anti-rotation anti-retreat hollow screw | |
| CN215079512U (en) | Anti-rotation anti-retreat headless hollow nail |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |