CN208799305U - Inner fixing device for intertrochanteric fracture - Google Patents
Inner fixing device for intertrochanteric fracture Download PDFInfo
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- CN208799305U CN208799305U CN201721489251.6U CN201721489251U CN208799305U CN 208799305 U CN208799305 U CN 208799305U CN 201721489251 U CN201721489251 U CN 201721489251U CN 208799305 U CN208799305 U CN 208799305U
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- lag screw
- row
- screw
- diagonal
- hole
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Abstract
The utility model discloses a kind of inner fixing devices for intertrochanteric fracture, belong to the field of medical instrument technology, it include: main nail in marrow, it is each passed through the diagonal lag screw and lower end pinning of main nail top and bottom in the marrow, master nails on end and is also equipped with row lag screw in the marrow, the row lag screw is axially set in femoral head along neck of femur, the row lag screw and the diagonal lag screw are arranged in a crossed manner, the greater trochanter of femur of crushing can be rebuild, increase the stable type of fracture fixation, promote union, it can also prevent fractured near end of thighbone rotation displacement, the stress for reducing lag screw in femoral head is concentrated, reduce or avoid interior fixation to go out risk from femoral head inscribe.
Description
Technical field
The utility model belongs to the field of medical instrument technology, and in particular to a kind of interior fixed dress for intertrochanteric fracture
It sets.
Background technique
Currently, operative treatment of senile patient femur's intertrochanteric fracture uses proximal femoral nail system often.This
System is made of nail main near end of thighbone marrow, femoral head neck lag screw and lower end pinning.It is first that patient femur is close when operation
The reduction of the fracture at end, then under the guidance of image fluoroscopy system, it is implanted into intramedullary nail system, carry out reconstruction patients near end of thighbone and stablizes
Property.Although surgical procedure is completed using minimal invasive techniques, work well, there is also Unstable internal fixation, coxa vara and delayed fractures
The complication such as healing.The interior fixation of document report, the system cuts out rate up to 5%~12%.It is generally believed that interior fixation cut out with
Lower reason is related: 1, such patient is aged, there is different degrees of osteoporosis；2, such fracture often merges size
Rotor is crushed and is obviously shifted.It is limited, is not possible to big lesser trochanter anatomical reduction and real by current treatment means and status of patient
Apply effective fixation；3, further stablize to obtain postoperative fracture, clinically common intramedullary nail internal fixation system allows Postoperative Bone
The end part that fractures displacement, but postoperative fracture end rotation displacement risk may be will increase in this way；4, implement Ineffective internal fixation, cause to draw
Power screw tip stress is concentrated, once lag screw position is bad, postoperative risk of failure is just obviously increased；5, internal fixation screw is
Titanium matter or steel, elasticity modulus are higher than human body bone.Above-mentioned a variety of causes, cause it is postoperative occur coxa vara, lag screw from
The case that femoral head is cut out is much.Once there is femoral head cutting, it often will cause patient and occur hip pain, activity again
Limited, even interior fixed destruction joint structure etc., leads to operative failure.It is generally acknowledged that interior be fixedly mounted in femoral head neck lower 1/
In 3, lateral projection should be to the rear at midpoint, postoperative that femoral head cutting is less likely to occur.In recent years, clinically using pinnacle away from referring to
Lead the installation site of surgical menopause.Research thinks that away from 25mm is less than, postoperative femoral head cutting risk is smaller on pinnacle.But by interior
The limitation of the fluoroscopic apparatus such as instrument design specification and C-arm is fixed, lag screw position and depth are accurately installed simultaneously in art
It is not easy.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of inner fixing devices for intertrochanteric fracture, should
Device can not only rebuild the greater trochanter of femur of crushing, increase the stable type of fracture fixation, can also prevent fractured near end of thighbone
Rotation displacement, but also the stress that can be reduced lag screw in femoral head is concentrated, and reduces or avoid interior fixation from femoral head
Cut out risk.
In order to solve the above technical problems, the technical solution of the utility model is: for the inner fixing device of intertrochanteric fracture,
It include: main nail in marrow, the diagonal lag screw and lower end pinning for being each passed through main nail top and bottom in the marrow, in the marrow
Master nails on end and is also equipped with row lag screw, and the row lag screw is axially set in femoral head along neck of femur, the cross
Row lag screw and the diagonal lag screw are arranged in a crossed manner.
Further, it leads to nail on to hold to be equipped in the marrow and be passed through respectively for the diagonal lag screw and row lag screw
First through hole and the second through-hole, the first through hole be obliquely installed, second through-hole is horizontally disposed, and second through-hole is set
Above the first through hole.
Further, the row lag screw is hollow full thread lock screw, is equipped with inside second through-hole
The screw thread to match with the row lag screw threads.
Further, the diagonal lag screw is hollow full thread lock screw, is equipped with inside the first through hole
The screw thread to match with the diagonal lag screw threads.
Further, diagonal lag screw and row lag screw are diameter 7.3mm titanium matter full thread lock screw, long
Spend 60mm~110mm.
After above-mentioned technical proposal, the beneficial effects of the utility model are:
Due to the inner fixing device for intertrochanteric fracture of the utility model, comprising: main in marrow to follow closely, be each passed through in marrow
The diagonal lag screw and lower end pinning of main nail top and bottom, it is main in marrow to nail on end and be also equipped with row lag screw, row
Lag screw is axially set in femoral head along neck of femur, and row lag screw and diagonal lag screw are arranged in a crossed manner, row pulling force
Screw main nail, neck of femur and femoral head in marrow are fixed, and can rebuild the fixed greater trochanter of femur for crushing displacement, increase bone
Fixed stability is rolled over, union is conducive to；Row lag screw is distributed in femoral head and neck of femur, can share part stock
The cutting force that the oblique stress and diagonal lag screw that bone and neck of femur are born are born, reduces stress and concentrates, reduce even
Femoral head is avoided to cut；And row lag screw and diagonal lag screw form cross-fixing structure, it is possible to reduce femoral head
The rotation displacement of neck, the interior fixing-stable of increase reduce interior fixation and cut out failure rate, and the acceptable further stable fracture broken ends of fractured bone subtracts
Few fracture end cripetura, promotes union.
It, can be under Kirschner wire guidance since diagonal lag screw and row lag screw are hollow complete thread screw
In implanted femur neck, the accuracy of implantation, the probability cut out in reduction and the operation wound for not increasing patient are improved.
In conclusion the inner fixing device for intertrochanteric fracture of the utility model, the femur that can rebuild crushing are big
Rotor can reduce femoral head neck cutting and rotation displacement under the premise of not increasing patients surgery wound, very fast completion operation,
Lag screw is reduced or avoided to cut out, and union can be promoted.
Detailed description of the invention
Fig. 1 is schematic diagram of the utility model for the inner fixing device of intertrochanteric fracture；
In figure, main nail in 10- marrow, 11- row lag screw, 12- diagonal lag screw, the lower end 13- pinning, 20- femur
Head, 21- neck of femur, 22- greater trochanter.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figure 1, the internal fixation system for intertrochanteric fracture of the utility model, comprising: main nail 10 in marrow, in marrow
10 upper ends of main nail are equipped with row lag screw 11 and diagonal lag screw 12, and lower end is equipped with lower end pinning 13, main nail in marrow
10 upper ends are equipped with the first through hole passed through respectively for diagonal lag screw 12 and row lag screw 11 and the second through-hole, and first is logical
Hole is obliquely installed, and the second through-hole is horizontally disposed, and the second through-hole is located above first through hole, i.e., installation row is drawn on main nail 10 in marrow
The position of power screw 11 is obliquely installed in the top at installation 12 position of diagonal lag screw, diagonal lag screw 12, row pulling force
Screw 11 and diagonal lag screw 12 are arranged in a crossed manner.It is respectively equipped with inside first through hole and the second through-hole and diagonal lag screw 12
The screw thread to match with the tailing screw flight of row lag screw 11.
Diagonal lag screw 12 passes through main nail 10 and neck of femur 21, final diagonal lag screw in marrow below greater trochanter 22
12 head threads part is fixed in femoral head 20, and tailing screw flight is fixed in the first through hole in marrow on main nail 10.Row
Lag screw 11 enters from greater trochanter 22, by 10 tail portions of main nail, 21 top of neck of femur in marrow, final row lag screw 11
The middle and lower part position of femoral head 20 is fixed in head threads part, and threads are fixed in the second through-hole in marrow on main nail 10.
Diagonal lag screw 12 and row lag screw 11 are diameter 7.3mm titanium matter full thread lock screw, length
60mm~110mm, heart are hollow.
The inner fixing device for intertrochanteric fracture of the utility model can rebuild the greater trochanter of femur of crushing, increase bone
Fixed stability is rolled over, the accurate of screw placement can be improved under the premise of not increasing patients surgery wound, very fast completion operation
Degree reduces femoral head neck cutting and rotation displacement, lag screw is reduced or avoided and cuts out, promotes union.
Although the foregoing describe specific embodiment of the present utility model, it should be appreciated by those skilled in the art,
Described embodiment is only a part of the embodiment of the utility model, and instead of all the embodiments, these are only to lift
Example explanation, the protection scope of the utility model is to be defined by the appended claims.Those skilled in the art is without departing substantially from this
It, can be to these embodiments under any creative labor of no process under the premise of the principle and essence of utility model
Various changes or modifications are made, but these change and modification each fall within the protection scope of the utility model.
Claims (5)
1. being used for the inner fixing device of intertrochanteric fracture, comprising: main in marrow to follow closely, be each passed through main nail top and bottom in the marrow
Diagonal lag screw and lower end pinning, which is characterized in that it is main in the marrow to nail on end and be also equipped with row lag screw, it is described
Row lag screw is axially set in femoral head along neck of femur, and the row lag screw intersects with the diagonal lag screw to be set
It sets.
2. the inner fixing device according to claim 1 for intertrochanteric fracture, which is characterized in that master nails in the marrow
The second through-hole that end is equipped with the first through hole for supplying the diagonal lag screw to pass through and passes through for the row lag screw, it is described
First through hole is obliquely installed, and second through-hole is horizontally disposed, and second through-hole is located above the first through hole.
3. the inner fixing device according to claim 2 for intertrochanteric fracture, which is characterized in that the row pulling force spiral shell
Nail is hollow full thread lock screw, is equipped with inside second through-hole and matches with the row lag screw threads
Screw thread.
4. the inner fixing device according to claim 2 for intertrochanteric fracture, which is characterized in that the diagonal pulling force spiral shell
Nail is hollow full thread lock screw, is equipped with inside the first through hole and matches with the diagonal lag screw threads
Screw thread.
5. the inner fixing device according to claim 2 for intertrochanteric fracture, which is characterized in that diagonal lag screw and
Row lag screw is diameter 7.3mm titanium matter full thread lock screw, length 60mm~110mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489251.6U CN208799305U (en) | 2017-11-09 | 2017-11-09 | Inner fixing device for intertrochanteric fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489251.6U CN208799305U (en) | 2017-11-09 | 2017-11-09 | Inner fixing device for intertrochanteric fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208799305U true CN208799305U (en) | 2019-04-30 |
Family
ID=66227156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721489251.6U Expired - Fee Related CN208799305U (en) | 2017-11-09 | 2017-11-09 | Inner fixing device for intertrochanteric fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208799305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113499132A (en) * | 2021-06-28 | 2021-10-15 | 无锡市第九人民医院 | Cross screw system supported and fixed on femoral neck cortical bone |
-
2017
- 2017-11-09 CN CN201721489251.6U patent/CN208799305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113499132A (en) * | 2021-06-28 | 2021-10-15 | 无锡市第九人民医院 | Cross screw system supported and fixed on femoral neck cortical bone |
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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 |
Granted publication date: 20190430 Termination date: 20191109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |