CN212066842U - Intramedullary support rod and proximal femur end provided with same - Google Patents
Intramedullary support rod and proximal femur end provided with same Download PDFInfo
- Publication number
- CN212066842U CN212066842U CN202020395800.9U CN202020395800U CN212066842U CN 212066842 U CN212066842 U CN 212066842U CN 202020395800 U CN202020395800 U CN 202020395800U CN 212066842 U CN212066842 U CN 212066842U
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- hole
- intramedullary
- support rod
- rod
- pressurizing
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 16
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 210000000527 greater trochanter Anatomy 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 210000001694 thigh bone Anatomy 0.000 abstract description 6
- 230000000399 orthopedic effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 11
- 206010017076 Fracture Diseases 0.000 description 10
- 210000000988 bone and bone Anatomy 0.000 description 8
- 230000035876 healing Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 208000006670 Multiple fractures Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000501 femur body Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 206010020100 Hip fracture Diseases 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 241000469816 Varus Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 208000034158 bleeding Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002391 femur head Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to an orthopedics is built-in to prepare technical field, discloses an intramedullary bracing piece and install thighbone near-end of this bracing piece, and it includes intramedullary bracing piece, main lock nail and forcing screw, and intramedullary bracing piece passes the rotor nest and installs in the thighbone, and main lock nail passes the greater trochanter simultaneously and twists on the thighbone with first through-hole, and forcing screw passes the greater trochanter simultaneously and interlocks on main lock nail with second through-hole, and self-tapping screw passes the regulating hole and twists on the thighbone body. The utility model has the advantages that: the base rod and the pressurizing rod form an included angle of 4 degrees, so that the device is more in accordance with human engineering, and the stress concentration in the use process is reduced by arranging the force dispersing groove, so that the fracture of the distal end of the femur is avoided.
Description
Technical Field
The utility model relates to an orthopedics is built internally and is prepared technical field, especially a thighbone near-end of installation intramedullary support bar.
Background
Femoral intertrochanteric fracture is a common orthopedic disease, 90% of the fracture is caused by falling, the population total incidence rates of 63/10 ten thousand women and 34/10 ten thousand men occur in Asia, and the incidence rates of 30% of the fracture in Asia and the fracture in Asia are increased year by year along with the increase of the average life span and the aging of the fracture in China. At present, the conventional operation treatment is adopted, and the operation treatment has the advantages of promoting early movement, facilitating rehabilitation, preventing bed-ridden complications, reducing mortality and the like, and the operation fixing mode is as follows: steel plate fixation (extramedullary mode), intramedullary nail fixation (intramedullary mode).
Steel plate fixation (extramedullary) mainly uses DHS (hip dynamic compression screw) which reduces the load borne by internal fixation by sliding compression to the maximum extent of contact of the fracture surface, but has the following disadvantages: is only suitable for stabilizing fracture, has larger surgical incision and increases the risk of bleeding and infection; eccentricity is fixed, stability is poor, risks such as nail breaking, plate breaking and femoral head cutting are easy to occur, and hip varus is easy to occur.
Intramedullary nail fixation (intramedullary mode) belongs to central fixation, has good mechanical property and is suitable for all types of fractures, Chinese patent CN207640478U describes a femoral trochanter fracture intramedullary nail fixation device which comprises an intramedullary main nail, a near-end bone nail, a helical knife bone nail and a locking nail, wherein the near-end of the intramedullary main nail is provided with a first mounting through hole and a second mounting through hole, the far-end of the intramedullary main nail is provided with a third mounting through hole, the second mounting through hole is positioned at one side of the first mounting through hole close to the far-end of the main nail, the rear part of the locking nail is arranged in the third mounting through hole, the rear part of the helical knife bone nail is arranged in the second mounting through hole, the rear part of the near-end bone nail is arranged in the first mounting through hole, the front end of the near-end bone nail is lapped on the helical knife bone nail, and the distance between the front end of the helical knife bone nail and the lapping position is 1 mm-10 mm, but the intramedullary main nail which plays a supporting role has low ergonomic conformity and poor healing effect on fractured femurs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a thighbone near-end of installation intramedullary support pole to solve the fixed ergonomic low problem of conformity degree of current intramedullary nail.
The purpose of the utility model is realized through the following technical scheme: an intramedullary supporting rod comprises a base rod, wherein a pressurizing rod is integrally formed at one end of the base rod, an included angle b between the axis of the base rod and the axis of the pressurizing rod is 4 degrees, an adjusting hole is formed in the base rod, a first through hole and a second through hole are formed in the pressurizing rod, the axis of the first through hole is parallel to the axis of the second through hole, and the first through hole is communicated with the second through hole.
Preferably, one end of the base rod, which is far away from the pressurizing rod, is provided with a force dispersing groove, and the force dispersing groove extends out of the side wall of the base rod towards two sides of the base rod.
Preferably, the adjusting hole is an oblong through hole.
Preferably, an included angle c between the axis of the first through hole and the axis of the base rod is 100-110 degrees.
The proximal femur end for mounting the intramedullary support rod comprises the intramedullary support rod, a main locking nail and a compression screw, wherein the intramedullary support rod is mounted in a femur body through a trochanter socket, the main locking nail simultaneously penetrates through a greater trochanter and the first through hole and is screwed on a femur head, the compression screw simultaneously penetrates through the greater trochanter and the second through hole and is meshed on the main locking nail, and a self-tapping screw is screwed on the femur body through the adjusting hole.
Preferably, the main lock nail is composed of a first polished rod section, a pressurizing thread section, a second polished rod section and a self-tapping thread section from the head part to the tail end of the main lock nail in sequence, threads on each ring of the pressurizing thread section are half rings and are positioned on the same side of the axis line of the main lock nail, and the pressurizing thread section is meshed with the thread section of the pressurizing screw.
Preferably, the head of the main lock nail is provided with a straight groove, the indicating groove is positioned on the notch of the straight groove, and the indicating groove and the pressurizing thread section are both positioned on the same side of the straight groove.
Compared with the prior art, the beneficial effects of the utility model are that: the base rod and the pressurizing rod form an included angle of 4 degrees, so that the device is more in accordance with human engineering, and the stress concentration in the use process is reduced by arranging the force dispersing groove, so that the fracture of the distal end of the femur is avoided.
Drawings
FIG. 1 is a schematic structural view of an intramedullary support rod;
FIG. 2 is a first view of the installation structure of the intramedullary support rod;
FIG. 3 is a schematic view of the mounting structure of the intramedullary support rod;
FIG. 4 is a schematic structural view of the intramedullary nail set;
in the figure, 1-compression screw, 2-first polished rod section, 3-compression threaded section, 4-second polished rod section, 5-self-tapping threaded section, 6-straight groove, 7-support rod, 8-rotor socket, 9-femoral body, 10-greater rotor, 11-femoral head, 12-long circular through hole, 13-indicator groove, 14-self-tapping screw, 15-first through hole, 16-second through hole, 17-dissipation groove, 18-base rod and 19-compression rod.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as 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 present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
As shown in fig. 1-3, a proximal femur end for mounting an intramedullary support rod comprises a base rod 18, a pressure rod 19 is integrally formed at one end of the base rod 18, an included angle b between the axis of the base rod 18 and the axis of the pressure rod 19 is 4 degrees, which conforms to the growth shape of femur and enhances the bearing capacity of the support rod 7, an adjusting hole is formed on the base rod 18, a first through hole 15 and a second through hole 16 are formed on the pressure rod 19, the axis of the first through hole 15 is parallel to the axis of the second through hole 16, the first through hole 15 is communicated with the second through hole 16, the included angle c between the axis of the first through hole 15 and the axis of the base rod 18 is 100-110 degrees, the support rod 7 and the proximal femur end of the intramedullary nail group, which is in a Y-shaped support and is fractured, which conforms to ergonomics, has better connection effect and is more beneficial to the healing of fractured femur, the intramedullary support rod 7 passes through a rotor socket 8 and is mounted in a femur, the main locking nail simultaneously passes through the greater trochanter 10 and the first through hole 15 and is screwed on the femoral head 11, the compression screw 1 simultaneously passes through the greater trochanter 10 and the second through hole 16 and is occluded on the main locking nail, and the self-tapping screw 14 passes through the adjusting hole and is screwed on the femoral shaft body 9.
In the present embodiment, as shown in fig. 1-3, a force dispersing groove 17 is formed at one end of the base rod 18 away from the pressure rod 19, and the force dispersing groove 17 extends out of the side wall of the base rod 18 towards two sides of the base rod 18, so that stress concentration is reduced during use, and fracture of the distal end of the femur is avoided.
In this embodiment, as shown in fig. 1-3, the adjusting hole is an oblong through hole 12, and a tapping screw 14 is screwed into the middle of the oblong through hole 12 to form a dynamic fixation, so that the support rod 7 can move up and down and is suitable for the femur in the growth and development stage.
In this embodiment, as shown in fig. 1-3, the main locking nail is sequentially composed of a first polished rod section 2, a pressurizing thread section 3, a second polished rod section 4 and a self-tapping thread section 5 from the head to the end, threads on each ring of the pressurizing thread section 3 are half-rings and are located on the same side of the axis of the main locking nail, the pressurizing thread section 3 is engaged with the thread section of the pressurizing screw 1, after the main locking nail connects two broken bones, the first polished rod section 2 is clamped on the side wall of the greater rotor 10, then the pressurizing screw 1 is screwed in, when the pressurizing screw 1 is engaged with the pressurizing thread section 3, the head of the pressurizing screw 1 is abutted against the side wall of the greater rotor 10, and when the pressurizing screw 1 is continuously screwed, the main locking nail moves toward the head of the pressurizing screw 1, so that the two broken bones are tightened, cracks of the bones are tightly attached, and healing of the broken parts is promoted.
In this embodiment, as shown in fig. 1-3, the head of the main lock pin is provided with a linear groove 6, the indication groove 13 is located at the notch of the linear groove 6, the indication groove 13 and the pressing thread section 3 are both located at the same side of the linear groove 6, and after the pressing thread section 3 is screwed into the large rotor 10, the orientation of the pressing thread section is determined by the indication groove 13, so that the pressing screw 1 can be screwed into the large rotor to be engaged with the large rotor.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. An intramedullary strut, comprising: including the base pole, the one end integrated into one piece of base pole has the pressure pole, the axial lead of base pole with the contained angle b of the axial lead of pressure pole is 4, the regulation hole has been seted up on the base pole, first through-hole and second through-hole have been seted up on the pressure pole, the axial lead of first through-hole with the axial lead of second through-hole is parallel, just first through-hole and second through-hole intercommunication.
2. An intramedullary support rod according to claim 1, wherein: one end of the base rod, which is far away from the pressurizing rod, is provided with a force dispersing groove, and the force dispersing groove extends out of the side wall of the base rod towards the two sides of the base rod.
3. An intramedullary support rod according to claim 1 or 2, wherein: the adjusting hole is an oblong through hole.
4. An intramedullary support rod according to claim 3, wherein: the included angle c between the axial lead of the first through hole and the axial lead of the base rod is 100-110 degrees.
5. A proximal femur for mounting an intramedullary support rod, comprising: the intramedullary support rod comprises the intramedullary support rod, a main locking nail and a compression screw, wherein the intramedullary support rod is installed in a femoral body through a trochanter socket, the main locking nail simultaneously penetrates through a greater trochanter and the first through hole and is screwed on a femoral head, the compression screw simultaneously penetrates through the greater trochanter and the second through hole and is meshed on the main locking nail, and a self-tapping screw is screwed on the femoral body through the adjusting hole.
6. The proximal femur for mounting an intramedullary support rod of claim 5, wherein: the main lock nail is composed of a first polished rod section, a pressurizing thread section, a second polished rod section and a self-tapping thread section from the head to the tail end of the main lock nail in sequence, threads on each ring of the pressurizing thread section are half rings and are located on the same side of the axis of the main lock nail, and the pressurizing thread section is meshed with the thread section of the pressurizing screw.
7. The proximal femur for mounting an intramedullary support rod of claim 6, wherein: the head of the main lock nail is provided with a straight groove, the indicating groove is positioned at the notch of the straight groove, and the indicating groove and the pressurizing thread section are positioned on the same side of the straight groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020395800.9U CN212066842U (en) | 2020-03-25 | 2020-03-25 | Intramedullary support rod and proximal femur end provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020395800.9U CN212066842U (en) | 2020-03-25 | 2020-03-25 | Intramedullary support rod and proximal femur end provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212066842U true CN212066842U (en) | 2020-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020395800.9U Expired - Fee Related CN212066842U (en) | 2020-03-25 | 2020-03-25 | Intramedullary support rod and proximal femur end provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212066842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112704556A (en) * | 2020-12-22 | 2021-04-27 | 安阳市伊来达医疗器械有限公司 | Anti-sinking anti-rotation rectangular wedge-shaped intramedullary fixation device for orthopedics department |
-
2020
- 2020-03-25 CN CN202020395800.9U patent/CN212066842U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112704556A (en) * | 2020-12-22 | 2021-04-27 | 安阳市伊来达医疗器械有限公司 | Anti-sinking anti-rotation rectangular wedge-shaped intramedullary fixation device for orthopedics department |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201204 |