CN209808502U - Novel internal fixation device for femoral neck fracture - Google Patents
Novel internal fixation device for femoral neck fracture Download PDFInfo
- Publication number
- CN209808502U CN209808502U CN201920328707.3U CN201920328707U CN209808502U CN 209808502 U CN209808502 U CN 209808502U CN 201920328707 U CN201920328707 U CN 201920328707U CN 209808502 U CN209808502 U CN 209808502U
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- China
- Prior art keywords
- tuberosity
- main nail
- internal fixation
- nail
- main
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- Expired - Fee Related
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- 208000020089 femoral neck fracture Diseases 0.000 title claims abstract description 22
- 210000001694 thigh bone Anatomy 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 208000010392 Bone Fractures Diseases 0.000 abstract description 5
- 206010017076 Fracture Diseases 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000017074 necrotic cell death Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 230000035876 healing Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 206010028851 Necrosis Diseases 0.000 description 4
- 210000002436 femur neck Anatomy 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000030016 Avascular necrosis Diseases 0.000 description 1
- 206010031264 Osteonecrosis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000302 ischemic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model provides a novel thighbone neck fracture internal fixation device, main nail and a plurality of lag screw between a tuberosity, be provided with 3-4 main nail holes on the nail body of main nail between tuberosity, the nail tail end of main nail is equipped with the hood between tuberosity, lag screw is 3-4 pieces, main nail is squeezed into to little tuberosity top by the big tuberosity outside of thighbone downwards to the outside, and at least 3 pieces of lag screw are squeezed into the femoral head through the thighbone neck by the thighbone near-end, and pass main nail hole on the main nail between tuberosity. The utility model discloses have better fixity ability, can reduce the arm of force of internal fixation, the atress of dispersion internal fixation, the resistance to compression and the anti-rotation nature of reinforcing internal fixation are showing the rate of surely getting out that reduces the internal fixation in the femoral head, can assist the patient to land in early, increase the healing rate of femoral neck fracture and reduce the incidence of femoral head necrosis, the utility model discloses but volume production, production efficiency is high, and the processing cost is low, operation easy operation, patient's cost is few.
Description
Technical Field
The utility model belongs to the technical field of femoral neck fracture internal fixation, a novel femoral neck fracture internal fixation is related to.
Background
The femoral neck fracture is a common disease and a frequently encountered disease in the field of orthopedics, mainly surgical treatment, and the life quality of a patient is seriously affected by improper treatment. At present, the clinical internal fixation treatment is mainly a multi-screw fixation system or a nail plate fixation system, the two fixation modes have different advantages and disadvantages and have different indications and different treatment options, but the two modes have higher incidence rates of internal fixation failure, even femoral neck fracture nonunion and femoral head ischemic necrosis, and are always the treatment problems of orthopedists. The existing fixing apparatus for femoral neck fracture is pressurized with tension and static force, because of the lever effect of internal fixation, the internal fixation has high cutting rate in the femur and poor compression resistance and rotation resistance, because a patient can frequently walk and move in the future, and the femoral neck part needs to bear most of the load of the body, the fixing apparatus can bear the alternate action of various stress loads, the existing apparatus can not meet the requirements of stability and strength of fixation, and adverse events such as internal fixation loosening, nail withdrawal, femoral neck shortening and the like can be easily caused, so that a novel internal fixing device is designed by orthopedists to overcome the defects of the internal fixation.
SUMMERY OF THE UTILITY MODEL
In to the background art, the internal fixation that exists easily became invalid, femoral neck fracture nonunion and the femoral head avascular necrosis incidence are higher not enough among the prior art femoral neck fracture treatment, the utility model provides a novel femoral neck fracture internal fixation device, this fixing device have better fixity can, can reduce the arm of force of internal fixation, disperse internal fixation's atress, reinforcing internal fixation's resistance to compression and anti revolving force, show the rate of surely taking of reduction internal fixation in the thighbone, can assist the patient to go to the ground early, reduce femoral neck fracture nonunion and femoral head necrosis incidence.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: the utility model provides a novel femoral neck fracture internal fixation device, main nail and a plurality of lag screw between a tuberosity, be provided with 3-4 main nail holes on the nail body of main nail between the tuberosity, the nail tail end of main nail is equipped with the tail cap between the tuberosity, lag screw is 3-4 pieces, main nail is squeezed into to little tuberosity top down by big tuberosity outside slant between the tuberosity, and the femoral head is squeezed into by the thighbone near-end through the thighbone neck to 3 piece at least lag screw, and pass main nail hole on the main nail between the tuberosity.
Further, the directions of all main nail holes on the main nails between the tuberosities are the same/different.
Further, the main nail holes between the tuberosities are arranged at equal intervals.
Furthermore, the tail part of each lag screw is sleeved with a gasket.
Furthermore, the main nail between the tuberosities and each lag screw are of hollow structures.
Furthermore, anti-back threads are arranged on the main nail between the tuberosities and the head of each tension screw.
As optimization, 3 equidirectional main nail holes are formed in the nail body of the main nail between the tuberosities; the lag screw is 3.
The utility model has the advantages that:
the utility model discloses an internal fixation device passes the main nail hole of main nail between a plurality of lag screw follow tuberosity, main nail forms an overall structure between lag screw and tuberosity like this, when bearing load, the arm of force of lag screw shortens, lever effect reduces, damage to thighbone reduces, and the overall structure bearing capacity that the main nail is constituteed between lag screw and tuberosity improves greatly, simultaneously because the card of main nail hinders the effect between tuberosity, make lag screw difficult rotatory in the motion, just so can not make lag screw become flexible and screw out, thereby the reliability and the stability of lag screw have been improved.
To sum up, the utility model discloses have better fixity ability, reduce the lever effect of internal fixation, reduce the cut rate of internal fixation in the thighbone neck, reinforcing resistance to compression and anti-rotation nature can assist the patient to land in early days, increases thighbone neck fracture healing rate and reduces the femoral head necrosis incidence, the utility model discloses but the volume production, production efficiency is high, and the processing cost is low, operation easy operation, the patient cost is few.
Drawings
FIG. 1 is a schematic diagram of a novel internal fixation structure for femoral neck fracture provided by the present invention;
in the figure: 1. femur, 2, main nail between tuberosities, 3, lag screw, 4, femoral neck, 5, fracture line, 6, main nail hole, 7, tail cap, 8, greater tuberosity, 9, smaller tuberosity, 10, proximal femur, 11, femoral head, 12, washer, 13 and anti-back thread.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Inquiry figure 1 the embodiment of the utility model provides a pair of novel femoral neck fracture internal fixation device, main nail 2 and a plurality of lag screw 3 between a tuberosity, be provided with 3 main nail holes on the nail body of main nail 2 between the tuberosity, the nail tail end of main nail 2 is equipped with tail cap 7 between the tuberosity, lag screw is 3 pieces, main nail 2 is squeezed into to little tuberosity 9 top in by the big tuberosity of thighbone 8 outside slant down between the tuberosity, and 3 pieces of lag screw 3 are squeezed into femoral head 11 by thighbone near-end 10 through thighbone neck 4, and pass main nail hole 6 on the tuberosity of main nail 2.
In this embodiment, the directions of the main nail holes 6 on the main nail 2 between the tuberosities are the same. The main nail hole arrangement mode is simple and practical in structure, suitable for treatment of most patients and low in processing cost.
In this embodiment, the tension screws 3 are arranged in parallel at equal intervals.
In this embodiment, the tail of each lag screw 3 is sleeved with a gasket 12. The function of packing ring is to prevent that lag screw tail end from falling into the sclerotin, makes things convenient for the patient to take out lag screw after the fracture is fully recovered.
In this embodiment, the main nail 2 between the tuberosities and each lag screw 3 are both hollow structures. The structure makes the screw structure light and high in strength, and can settle the Kirschner wire, so that bone fragments can conveniently enter the hollow structure when the screw is driven in, and the screw is driven in.
In this embodiment, the main nail 2 between the tuberosities and the head of each lag screw 3 are provided with anti-back threads 14. This configuration facilitates the prevention of back-out of the screw and the penetration of the screw.
The utility model discloses beneficial effect of embodiment:
the utility model discloses internal fixation structure, it passes 3 lag screw 3 from main nail hole 6 of main nail 2 between the tuberosity, like this lag screw 3 and tuberosity main nail 2 form an overall structure, when bearing load, the arm of force of lag screw 3 shortens, lever effect reduces, damage to thighbone 1 reduces, and the overall structure bearing capacity that lag screw 3 and tuberosity main nail 2 constitute improves greatly, simultaneously because the card of main nail 2 hinders the effect, make lag screw 3 difficult rotatory in the motion, just so can not make lag screw 3 not hard up and screw out, thereby the reliability and the stability of lag screw 3 have been improved.
To sum up, the utility model discloses have better fixity ability, reduce the lever effect of internal fixation, reduce the cut rate of internal fixation in the thighbone neck, reinforcing resistance to compression and anti-rotation nature can assist the patient to land in early days, reduce thighbone neck fracture non-healing rate and femoral head necrosis incidence, the utility model discloses but the volume production, production efficiency is high, and the processing cost is low, operation easy operation, the patient cost is few.
Finally, it should be noted that: 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 described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The present invention is not specifically described in the prior art.
Claims (7)
1. The utility model provides a novel femoral neck fracture internal fixation device which characterized in that: the main nail and a plurality of lag screw between the tuberosity, be provided with 3-4 main nail holes on the nail body of main nail between the tuberosity, the nail tail end of main nail is equipped with the tail cap between the tuberosity, lag screw is 3-4 pieces, main nail is squeezed into to little tuberosity top down by the big tuberosity outside of thighbone to the slant between the tuberosity, and the femoral head is squeezed into by thighbone near-end through the thighbone neck to 3 piece at least lag screws pass main nail hole on the main nail between the tuberosity.
2. The novel internal fixation device for femoral neck fractures according to claim 1, characterized in that: the directions of all main nail holes on the main nails between the tuberosities are the same/different.
3. The novel internal fixation device for femoral neck fractures according to claim 1, characterized in that: the main nail holes between the tuberosities are arranged at equal intervals.
4. The novel internal fixation device for femoral neck fractures according to claim 1, characterized in that: and the tail part of each lag screw is sleeved with a gasket.
5. The novel internal fixation device for femoral neck fractures according to claim 1, characterized in that: the main nail between the tuberosities and each lag screw are of hollow structures.
6. The novel internal fixation device for femoral neck fractures according to claim 1, characterized in that: the head parts of the main screw between the tuberosities and each tension screw are provided with anti-back threads.
7. The novel internal fixation device for femoral neck fractures according to claim 1, characterized in that: the nail body of the main nail between the tuberosities is provided with 3 main nail holes in the same direction; the lag screw is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920328707.3U CN209808502U (en) | 2019-03-15 | 2019-03-15 | Novel internal fixation device for femoral neck fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920328707.3U CN209808502U (en) | 2019-03-15 | 2019-03-15 | Novel internal fixation device for femoral neck fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209808502U true CN209808502U (en) | 2019-12-20 |
Family
ID=68875698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920328707.3U Expired - Fee Related CN209808502U (en) | 2019-03-15 | 2019-03-15 | Novel internal fixation device for femoral neck fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209808502U (en) |
-
2019
- 2019-03-15 CN CN201920328707.3U patent/CN209808502U/en not_active Expired - Fee Related
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Legal Events
| 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: 20191220 |