CN200998302Y - Limited dynamic pressurization hip screw device - Google Patents
Limited dynamic pressurization hip screw device Download PDFInfo
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- CN200998302Y CN200998302Y CNU2006201283704U CN200620128370U CN200998302Y CN 200998302 Y CN200998302 Y CN 200998302Y CN U2006201283704 U CNU2006201283704 U CN U2006201283704U CN 200620128370 U CN200620128370 U CN 200620128370U CN 200998302 Y CN200998302 Y CN 200998302Y
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- compression screw
- blade plate
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Abstract
The utility model provides a limited power pressurizing hipbone screw device, belonging to the surgical operation inner fixing appliance technology field, which provides a limited power pressurizing hipbone screw device which can limit the outward sliding distance of the pressurizing screw along the sleeve, and avoid the occurrences of the shortening of the patient limbs and the pain of the hipbone joint. The utility model is composed of a slide pressurizing screw, a sleeve bone connecting plate, a tail pressurizing screw and a bone connecting plate screw, the slide pressurizing screw adopts a rod shape, and is divided into a thread section and a non-thread section, the cross section of the non-thread section is matched with the inner contour of the sleeve cross section of the sleeve bone connecting plate, both are matched and connected by the axial direction sliding, and a limit dummy club for limiting the sleeve axial direction sliding is arranged on the non thread section of the slide pressurizing screw. The front part of the non-thread section can not enter the sleeve of bone plate, only the rear part can slide in the sleeve, thus the sliding distance of the pressurizing screw is limited, the requirement of the bone substance absorption at the fracture end is met, simultaneously, the excessive sliding is prevented to avoid the limbs shortening and deformity cure.
Description
Technical field
This utility model relates to a kind of fracture of the femoral head fixture, belongs to surgical operation internal fixation device technical field.
Background technology
Intertrochanteric fracture of the femur is mainly in elderly patient.Along with its incidence rate of social senilization has ascendant trend gradually, at present the method for treatment intertrochanteric fracture of the femur is more, as gusset internal fixation, condyle plate internal fixation, gooseneck boom nail internal fixation, self-locking nail internal fixation, dynamic hip screw fix, Richard pegboard systems etc.The multiformity of Therapeutic Method highlights the difficulty of this type of injury in treating, and the aged intertrochanteric fracture of the femur of therefore correct treatment is the important topic of pendulum in face of each orthopedist.
In said method,, at present clinical more commonly used owing to the dynamic hip screw fixture can be pressurizeed to fracture end.Dynamic hip screw is made of slip compression screw fixation, sleeve blade plate, afterbody compression screw and blade plate screw.According to designing requirement, this device can reach fixing early stage broken ends of fractured bone static(al) pressurization, increases fixed stability, the back broken ends of fractured bone sclerotin that bears a heavy burden absorbs on a small quantity, and drive screw can slide along sleeve, and fracture end is produced dynamic property follow-up pressurization, increase fractures stability, promote union of fracture.Show in the use, firm in structure, the bending strength of the sleeve blade plate of this device greatly, frangibility and be difficult for taking place the coxa vara deformity; Thick slip compression screw fixation is difficult for taking place nail point cutting sclerotin and passes capital phenomenon.Therefore, this device have reasonable in design, firm in structure, bending strength greatly, frangibility and be difficult for taking place the odd-shaped characteristics of coxa vara.But, in using practice, find, to some comminuted or osteoporotic intertrochanteric fracture of the femur patients, after (traction down) implants this device after the reduction of the fracture, postoperative is because the tractive of abduction and adductor muscles, the undue intercalation of fracture end cortex resets and loses, and the slip compression screw fixation outwards skids off along sleeve, cause the neck of femur cripetura, malunion, and the tail end of the slip compression screw fixation that exposes influences the slip of tensor fasciae latae, the pain when patient tempers hip joint.Also have clinical report, when screw slip pressurization exceeded 15mm, the internal fixation mortality obviously increased, and when the screw slip exceeded 20mm, the limb cripetura and the hip arthralgia can appear suffering from the patient.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of distance that can the limit slippage compression screw fixation outwards skids off along sleeve, avoid the patient to suffer from the limited dynamic hip screw device of the generation of the cripetura of limb and the hip arthralgia.
The technical scheme that solves the problems of the technologies described above is:
A kind of limited dynamic hip screw device, it is by slip compression screw fixation 1, sleeve blade plate 2, afterbody compression screw 3 and blade plate screw 4 are formed, the slip compression screw fixation is shaft-like, be divided into thread segment and non-threaded section, the interior profile phase coupling of non-threaded section shape of cross section and sleeve blade plate sleeve cross section, the two is sliding connection vertically, its improvements are, non-threaded section at the slip compression screw fixation is provided with restriction sleeve positive stop lug boss 10 in axial sliding, promptly slide non-threaded section of compression screw fixation be divided into by positive stop lug boss before and after two sections, what be connected with screw thread is leading portion 6, positive stop lug boss is a back segment 7 to slip compression screw fixation 1 afterbody, and back segment 7 mates with the interior profile phase of sleeve blade plate sleeve 5 cross sections.
Above-mentioned limited dynamic hip screw device, the cross sectional shape of described back segment 7 is a non-circular structure, as regular polygon or go bow circular, the sleeve-shaped of sleeve blade plate is complementary with it, the cross sectional shape of leading portion 6 is circular, and this circular diameter is not less than the regular polygon diagonal or removes to bend circular diameter.
Above-mentioned limited dynamic hip screw device, the back segment upper edge that described slip compression screw fixation is non-threaded section is axially arranged with gathering sill.
Above-mentioned limited dynamic hip screw device, the back segment length that described slip compression screw fixation is non-threaded section is than the big 5-15mm of axial length of sleeve blade plate sleeve 5.
Adopt the limited dynamic hip screw device of this utility model structure owing to be provided with positive stop lug boss, make the telescopic internal diameter cross section of the cross section of non-threaded section leading portion of slip compression screw fixation greater than the sleeve blade plate, the leading portion that the slip compression screw fixation is non-threaded section can not enter in the sleeve of sleeve blade plate, have only the back segment that is complementary with the sleeve cross section in the sleeve of sleeve blade plate, to endwisely slip, the sliding distance of slip compression screw fixation has obtained restriction, in the needs that satisfy broken ends of fractured bone bone absorption, prevent undue slip again, avoided limb shortening and malunion.Therefore that this limited dynamic hip screw treatment intertrochanteric fracture of the femur has is rational in infrastructure, fixed, stable mechanical property, complication are few, ambulation, hip joint function such as recover to get well at advantage in early days, especially for comminuted or osteoporotic intertrochanteric fracture of the femur patient have strut fixing, keep the normal morphology of femur, prevent the advantage of malunion.The design has enlarged the indication of dynamic coxa treatment intertrochanteric fracture of the femur, applicable to the intertrochanteric fracture of the femur of all kinds and various sclerotin.
Description of drawings
Fig. 1 is an overall structure sketch map of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the B-B cutaway view of Fig. 1.
Number in the figure is as follows: slip compression screw fixation 1, sleeve blade plate 2, afterbody compression screw 3, blade plate screw 4, sleeve 5, leading portion 6, back segment 7, projection 8, depression 9 positive stop lug boss 10
The specific embodiment
But in the prior art, the non-threaded section internal diameter with the sleeve 5 of sleeve blade plate 2 of slip compression screw fixation 1 is complementary, and is a kind of endwisely slipping the motion connected mode that can not rotate.It is internal diameter cross section other geometry of the sleeve 5 of sleeve blade plate 2 for not comprising that rule is circular, as regular hexagon or octagon, perhaps for going bow circular, promptly with the circle etc. of groove or projection, non-threaded section cross sectional shape of slip compression screw fixation 1 matches with it, and non-threaded section of the compression screw fixation 1 that slides like this can insert and slide in the sleeve 5 and can not rotate.In like manner, also can be designed to the mode that is slidingly connected that the back segment upper edge is axially arranged with gathering sill.
Referring to Fig. 1, Fig. 2, non-threaded section branch of slip compression screw fixation 1 of the present utility model is two sections of front and back by positive stop lug boss, and what be connected with screw thread is leading portion 6, and to slip compression screw fixation 1 afterbody after the leading portion 6 is back segment 7.The internal diameter of the sleeve 5 of sleeve blade plate 2 is that both sides have parallel protruding 8 circle, and there is the circle of parallel recesses 9 the shape both sides in the cross section of the back segment 7 of slip compression screw fixation 1, they mate mutually, non-threaded section back segment 7 of slip compression screw fixation 1 can insert the sleeve 5 of sleeve blade plate 2 like this, in sleeve 5, endwisely slip, can not rotate equally.The cross sectional shape of the leading portion 6 of slip compression screw fixation 1 is circular, though its diameter is identical with the back segment 7 of slip compression screw fixation 1, but both sides are depression not, therefore can not enter in the sleeve 5 of sleeve blade plate 2, and the sliding distance of slip compression screw fixation 1 is restricted.
In design, be the big 5-15mm of axial length than sleeve blade plate sleeve 5 with the length setting of 1 non-threaded section back segment of slip compression screw fixation 7.The pressurization distance is controlled because it slides, for stable intertrochanteric fracture of the femur, limited dynamic hip screw has the effect of firm static pressurization and dynamic property pressurization, and for the unstability intertrochanteric fracture of the femur, after the limited slip compression screw fixation of limited dynamic hip screw slides past 5-15mm, formation struts fixing, has avoided suffering from the cripetura of limb and the generation of the hip arthralgia.
During operation, the patient is flat to crouch on extension table, behind the following closed reduction of traction, implant guide pin in the neck of femur middle and lower part, after perspective position is suitable, reaming, be screwed into the slip compression screw fixation 1 of appropriate length, be inserted in the sleeve blade plate 2 of suitable hole count, punching is screwed into blade plate screw 4, is screwed into afterbody compression screw 3 at last and finishes the static(al) pressurization.The internal fixation implant surgery finishes.
Claims (4)
1. limited dynamic hip screw device, it is by slip compression screw fixation [1], sleeve blade plate [2], afterbody compression screw [3] and blade plate screw [4] are formed, slip compression screw fixation [1] is shaft-like, be divided into thread segment and non-threaded section, the interior profile phase coupling of sleeve [5] cross section of non-threaded section shape of cross section and sleeve blade plate [2], the two is sliding connection vertically, it is characterized in that, non-threaded section at slip compression screw fixation [1] is provided with restriction sleeve positive stop lug boss [10] in axial sliding, before and after positive stop lug boss [10] is divided into non-threaded section of slip compression screw fixation [1] two sections, what be connected with screw thread is leading portion [6], positive stop lug boss is back segment [7] to slip compression screw fixation [1] afterbody, and back segment [7] mates with the interior profile phase of sleeve blade plate sleeve [5] cross section.
2. limited dynamic hip screw device according to claim 1, it is characterized in that: described back segment [7] is regular polygon or goes bow circular with the interior contour shape of sleeve blade plate sleeve [5] cross section, the cross sectional shape of leading portion [6] is circular, and this circular diameter is not less than the regular polygon diagonal or removes to bend circular diameter.
3. limited dynamic hip screw device according to claim 1 is characterized in that: back segment [7] upper edge that described slip compression screw fixation [1] is non-threaded section is axially arranged with gathering sill.
4. according to claim 1,2 or 3 described limited dynamic hip screw devices, it is characterized in that: the back segment length that described slip compression screw fixation is non-threaded section is than the big 5-15mm of axial length of sleeve blade plate sleeve [5].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201283704U CN200998302Y (en) | 2006-12-14 | 2006-12-14 | Limited dynamic pressurization hip screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201283704U CN200998302Y (en) | 2006-12-14 | 2006-12-14 | Limited dynamic pressurization hip screw device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200998302Y true CN200998302Y (en) | 2008-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201283704U Expired - Fee Related CN200998302Y (en) | 2006-12-14 | 2006-12-14 | Limited dynamic pressurization hip screw device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200998302Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721242B (en) * | 2008-10-30 | 2012-07-04 | 法玛科技顾问股份有限公司 | Hip joint dynamic inter-locking screw |
| CN102755187A (en) * | 2012-07-31 | 2012-10-31 | 中国人民解放军第三军医大学第三附属医院 | Proximal femoral percutaneous locking dynamic hip helical blade nail |
| CN102793579A (en) * | 2011-05-27 | 2012-11-28 | 练克俭 | Hollow bone grafting type dynamic hip screw |
| CN108720914A (en) * | 2018-05-08 | 2018-11-02 | 中国人民解放军总医院 | A kind of fracture of neck of femur fixing device |
| CN108852493A (en) * | 2018-07-13 | 2018-11-23 | 王刚 | A kind of novel thighbone neck locked pressurized bone plate |
-
2006
- 2006-12-14 CN CNU2006201283704U patent/CN200998302Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101721242B (en) * | 2008-10-30 | 2012-07-04 | 法玛科技顾问股份有限公司 | Hip joint dynamic inter-locking screw |
| CN102793579A (en) * | 2011-05-27 | 2012-11-28 | 练克俭 | Hollow bone grafting type dynamic hip screw |
| CN102793579B (en) * | 2011-05-27 | 2015-08-12 | 练克俭 | Hollow bone grafting formula dynamic hip screw |
| CN102755187A (en) * | 2012-07-31 | 2012-10-31 | 中国人民解放军第三军医大学第三附属医院 | Proximal femoral percutaneous locking dynamic hip helical blade nail |
| CN108720914A (en) * | 2018-05-08 | 2018-11-02 | 中国人民解放军总医院 | A kind of fracture of neck of femur fixing device |
| CN108720914B (en) * | 2018-05-08 | 2020-11-27 | 中国人民解放军总医院 | Femoral neck fracture fixing device |
| CN108852493A (en) * | 2018-07-13 | 2018-11-23 | 王刚 | A kind of novel thighbone neck locked pressurized bone plate |
| CN108852493B (en) * | 2018-07-13 | 2023-07-14 | 湖州学院 | Novel femur neck locking and pressurizing bone fracture plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: ZHANG QI LI ZENGLI ^ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Zhang Qi|Li Zengli Number: 01 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Zhang Qi|Li Zengli Number: 01 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: ZHANG QI LI ZENGLI ^ |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |