CN202173467U - Dynamic hip screw - Google Patents
Dynamic hip screw Download PDFInfo
- Publication number
- CN202173467U CN202173467U CN2011202973939U CN201120297393U CN202173467U CN 202173467 U CN202173467 U CN 202173467U CN 2011202973939 U CN2011202973939 U CN 2011202973939U CN 201120297393 U CN201120297393 U CN 201120297393U CN 202173467 U CN202173467 U CN 202173467U
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- CN
- China
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- steel plate
- screw
- lag screw
- sleeve steel
- fracture
- Prior art date
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- Expired - Fee Related
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Abstract
A dynamic hip screw belongs to the technical field of medical instruments and comprises a lag screw, a sleeve steel plate, a lag screw end cap, a steel plate screw and a limit device. The sleeve steel plate is fixed by the steel plate screw, the lag screw end cap is fixedly connected with the lag screw through the sleeve steel plate, and the limit device is positioned in the rear of the lag screw in a sleeved manner and contacts with the sleeve steel plate. The dynamic hip screw is mainly used for seriously fractured II-type and III-type patients with bone defects, clinical application indicates that sliding between the lag screw and the sleeve steel plate can be limited effectively, and internal fixation stability can be enhanced by the aid of an internal fixator capable of functioning in stable support, so that fracture re-displacement, non-union and shortening deformity of lower limbs are decreased.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, is a kind of dynamic hip screw of treating femoral intertrochanteric II type, III type fracture specifically.
Background technology
Intertrochanteric fracture is a kind of common Hip Fracture, and whether the Evans classification method of improvement occurs fracturing influencing according to big or lesser trochanter portion is stablized, and it is divided into I type (I A type and I Type B), II type (II A and II B), III type.I A type (do not have displacement) and I Type B (displacement is arranged), for fracture line by outer top inwardly the below along two parts fracture of intertrochanteric line traveling, i.e. Fracture Simple, anatomical reduction is easy, stablize the back that resets; II A type fracture is that fracture is involved trochiterian three partial fractures, and II Type B fracture is trochantinian three partial fractures; III type fracture is for involving big trochantinian four partial fractures.Because the gerontal patient often has osteoporosis, causes the femoral intertrochanteric comminuted fracture after the wound easily, fracture is displacement, injury bony defect etc. seriously, and II type, III type fracture pilosity are born in the old people.At present, dynamic hip screw (dynamic hip screw or DHS) is widely used as one of standard internal fixation medical apparatus and instruments of treating intertrochanteric fracture clinically, has also obtained better therapeutic effect.Reliable to I type intertrochanteric fracture therapeutic effect, but, carry out the DHS internal fixation to II type, III type patient; The defective of in addition sliding between DHS lag screw and the sleeve steel plate owing to the reason of fracture own; Exist internal fixation stability not enough, surgical procedure is difficulty comparatively, and fracture displacement once more appears in postoperative easily; Problems such as nonunion, lower limb shortened deformity cause the patient dysfunction and pain to occur.
The utility model content
This utility model provides a kind of II type, employed dynamic hip screw of III type intertrochanteric fracture patient of being primarily aimed at; Can prevent to slide between lag screw and the sleeve steel plate; Increase internal fixation stability, thereby reduce the problem of postoperative fracture displacement once more, nonunion, lower limb shortened deformity.
For this reason; Adopt following technical scheme: a kind of dynamic hip screw; Comprise lag screw, sleeve steel plate, lag screw tail medicated cap, steel plate screw, said sleeve steel plate is fixed by steel plate screw, and said lag screw tail medicated cap is fixedly connected with said lag screw through said sleeve steel plate; It also comprises stopping means; This stopping means suit is positioned said lag screw rear portion and contacts with said sleeve steel plate.
This utility model is primarily aimed to be pulverized seriously; The II type that bone is damaged, III type patient; Show through clinical practice; Can effectively limit the slip between lag screw and the sleeve steel plate, make inside-fixture can play the stable support effect and increased internal fixation stability, thereby reduce the generation of the displacement once more of fracturing, nonunion, lower limb shortened deformity.
This utility model is simple to operate, safety, effective, and do not increase any burden of patient.
Description of drawings
Fig. 1 is the structural representation that dissects of this utility model.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is done further detailed explanation.
A kind of dynamic hip screw; Comprise outside lag screw 1, sleeve steel plate 3, lag screw tail medicated cap 4, the steel plate screw 5; Also comprise stopping means 2; This stopping means 2 is according to the dynamic hip screw shape, adopts medical material like elastomers such as the wire loop of tubular sleeve that rustless steel or titanium alloy are processed or minor spiral spacing or springs, and its length can be adjusted according to the state of an illness; Said sleeve steel plate 3 is fixing by steel plate screw 5, and the section femur far away of can fracturing is fixed; Said lag screw tail medicated cap 4 is fixedly connected with said lag screw 1 screw thread through said sleeve steel plate 3; Said stopping means 2 suits are positioned said lag screw 1 rear portion and contact with said sleeve steel plate 3, can limit sleeve steel plate 3 and upwards slide along lag screw 1; Through adjustment lag screw 1 and lag screw tail medicated cap 4, can carry out the adjusting in suitable pressurization of fracture site and stopping means 2 slits.
During operation technique, at first the patient is taked epidural anesthesia, row hip joint outside otch, behind the exposure fracture site, reduction by traction; Then under C type arm perspective; The 1-2cm place beats guide pin along neck of femur to the femoral head direction below greater trochanter of femur, is screwed into lag screw 1 and stopping means 2 along the guide pin direction, makes ailhead 1-1.5cm place below the femoral head articular surface; Lag screw 1 direction becomes 130 degree angles with the lateral side of femur cortical bone; Through steel plate screw 5 installing sleeve steel plates 3, the section steel plate screw far away of fracturing is fixed, again through lag screw tail medicated cap 4 subsequently; Carry out the adjusting in suitable pressurization of fracture site and stopping means 2 slits, fracture site is suitably drawn close; Like this, internal fixation stability is strengthened, and reduces the generation of postoperative fracture displacement once more, nonunion, lower limb shortened deformity.
Claims (2)
1. dynamic hip screw; Comprise lag screw (1), sleeve steel plate (3), lag screw tail medicated cap (4), steel plate screw (5); Said sleeve steel plate (3) is fixing by steel plate screw (5); Said lag screw tail medicated cap (4) is fixedly connected with said lag screw (1) through said sleeve steel plate (3), and it is characterized in that: it also comprises stopping means (2); This stopping means (2) suit also is positioned said lag screw (1) rear portion and contacting with said sleeve steel plate (3).
2. a kind of dynamic hip screw according to claim 1 is characterized in that: said stopping means (2) is wire loop or spring or tubular sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202973939U CN202173467U (en) | 2011-08-16 | 2011-08-16 | Dynamic hip screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202973939U CN202173467U (en) | 2011-08-16 | 2011-08-16 | Dynamic hip screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202173467U true CN202173467U (en) | 2012-03-28 |
Family
ID=45863377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202973939U Expired - Fee Related CN202173467U (en) | 2011-08-16 | 2011-08-16 | Dynamic hip screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202173467U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103027739A (en) * | 2012-11-28 | 2013-04-10 | 曾祥一 | Elastic dynamic hip screw |
| CN106388923A (en) * | 2016-10-25 | 2017-02-15 | 上海市第六人民医院 | Controllable and slidable locking compression plate for femoral neck |
| CN112155701A (en) * | 2020-10-10 | 2021-01-01 | 江山市人民医院 | Adjustable screw for calcaneus |
-
2011
- 2011-08-16 CN CN2011202973939U patent/CN202173467U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103027739A (en) * | 2012-11-28 | 2013-04-10 | 曾祥一 | Elastic dynamic hip screw |
| CN106388923A (en) * | 2016-10-25 | 2017-02-15 | 上海市第六人民医院 | Controllable and slidable locking compression plate for femoral neck |
| CN112155701A (en) * | 2020-10-10 | 2021-01-01 | 江山市人民医院 | Adjustable screw for calcaneus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20130816 |