CN205514866U - Medical femoral head extractor - Google Patents
Medical femoral head extractor Download PDFInfo
- Publication number
- CN205514866U CN205514866U CN201620057105.5U CN201620057105U CN205514866U CN 205514866 U CN205514866 U CN 205514866U CN 201620057105 U CN201620057105 U CN 201620057105U CN 205514866 U CN205514866 U CN 205514866U
- Authority
- CN
- China
- Prior art keywords
- hole
- tip
- internal thread
- head
- abutment sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Prostheses (AREA)
Abstract
The utility model provides a medical femoral head extractor comprises abutment sleeve, tip threaded rod and T shape handle, and cylinder metal tip threaded rod one end is external screw thread toper tip, the other end fixed connection T handle that appears, metal abutment sleeve is the circular cone cylinder, the fixed three vertically tip awl of equipartition on the major diameter edge circumference terminal surface, and the awl point is unsettled, and there is internal thread through hole intercommunication counter bore at the vertical center of circular cone cylinder, symmetrical fixed gate shape frame on the minor diameter circumference terminal surface, there is endocentric vertical through -hole with internal thread through hole at the frame lateral beam center, inserts the tip threaded rod and wears out the frame lateral beam central through hole, with circular cone cylinder internal thread through hole screw -thread fit. The utility model is simple in operation, it is fixed reliable, can once only swiftly take out the head of femur smoothly, shorten operation time, alleviate patient's misery, be suitable for and promote the practicality.
Description
Technical field
This utility model relates to medical device apparatus field, especially relates to a kind of medical extraction apparatus for head of femur.
Background technology
In hospital orthopedics clinical treatment, person in middle and old age's fracture of femoral neck is a common fracture, and along with aged tendency of population, its sickness rate is still further up.Artificial hip joint replacing, is the conventional operation method of person in middle and old age's fracture of femoral neck including half hip and full hip hip replacement.
In hip prosthesis replacement after femoral neck fracture operation, taking out femoral head is an important step, existing method is with the T-shaped handle of a threaded head, it is commonly called as head extractor, thump laggard enter femoral head, then rotate T-shaped handle, utilize thread head to be threaded into femoral head, then rotate T-shaped handle and take out femoral head.But can not control owing to free femoral head rotates in acetabular bone, head extractor is made to be difficult to be screwed onto late-segmental collapse position exactly, thus femoral head of cannot gripping tightly, disposable taking-up smoothly can not be accomplished, often need repeatable operation repeatedly, just can be taken off femoral head, the operating time of waste several minutes, the most even because head extractor implantation site is the best, cause damaging cartilago acetabularis and sclerotin.Develop a kind of simple and reliable, femoral head can be taken out the most smoothly, be the problem of the art needs solution.
Summary of the invention
It is an object of the invention to be to provide a kind of simple and reliable, femoral head, the medical extraction apparatus for head of femur of shortening operating time can be taken out the most smoothly.
In order to achieve the above object, the technical scheme of this utility model following structure of employing: a kind of medical extraction apparatus for head of femur, it is made up of pointed thread bar, T-handle and abutment sleeve, being characterized in: cylindrical metal pointed thread bar one end is tapered into conical external screw thread tip, the other end is fixing connects T-handle；Metal abutment sleeve is conical cylinder, uniform in the edge circumferential end surfaces of major diameter one end fix three vertical tips cone, cone is unsettled, there is internal thread through hole in conical cylinder longitudinal center, symmetrical fixing door-shaped frame in the edge circumferential end surfaces of minor diameter one end, and there is longitudinal hole at cruciform bracing center, through hole is concentric with internal thread through hole, pointed thread bar tip end is inserted and passes cruciform bracing central through hole, with conical cylinder internal thread through hole threaded engagement, constitute a kind of medical extraction apparatus for head of femur.
During this utility model operation, first by the three of abutment sleeve tip cone alignment section of collum femoris, it is driven into section of collum femoris by three sharp keen metal pointed cones, can firmly control femoral head does not allow it rotate, and is rotated further by T-handle, and sharp head thread bar placed in the middle is screwed into femoral head, can ensure that screw rod is screwed onto late-segmental collapse, three external screw thread tips together with abutment sleeve firmly hold on femoral head, utilize the auto-lock function of screw thread, stablize and take out femoral head smoothly.
This utility model is simple to operate, fixing reliable, disposably fast can take out femoral head smoothly, shorten operating time, also mitigate the misery of patient, reached purpose.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is the left view of Fig. 1
Fig. 3 is that Fig. 1 is along line A-A profile
Detailed description of the invention
It is described in further detail this utility model below in conjunction with the accompanying drawings, Fig. 1 to Fig. 3 demonstrates structural principle of the present utility model, a kind of medical extraction apparatus for head of femur, being made up of pointed thread bar 2, T-handle and 3 abutment sleeves 1: cylindrical metal pointed thread bar 2 one end is tapered into conical external screw thread tip 6, the other end is fixing connects T-handle 3；Metal abutment sleeve 1 is conical cylinder, uniform in the edge circumferential end surfaces of major diameter one end fix three vertical tips cone 5, cone is unsettled, there is internal thread through hole in conical cylinder longitudinal center, symmetrical fixing door-shaped frame 4 in the edge circumferential end surfaces of minor diameter one end, there is longitudinal hole at framework 4 crossbeam center, through hole is concentric with internal thread through hole, pointed thread bar 2 tip end is inserted and passes framework 4 crossbeam central through hole, with the internal thread through hole threaded engagement of abutment sleeve 1, constitute a kind of medical extraction apparatus for head of femur.
Claims (1)
1. a medical extraction apparatus for head of femur, it is made up of abutment sleeve (1), pointed thread bar (2) and T-handle (3), it is characterized in that: cylindrical metal pointed thread bar (2) one end is tapered into conical external screw thread tip (6), the other end is fixing connects T-handle (3)；Metal abutment sleeve (1) is conical cylinder, uniform in the edge circumferential end surfaces of major diameter one end fix three vertical tips cone (5), cone is unsettled, there is internal thread through hole in conical cylinder longitudinal center, symmetrical fixing door-shaped frame (4) in the edge circumferential end surfaces of minor diameter one end, there is longitudinal hole at framework (4) crossbeam center, through hole is concentric with internal thread through hole, pointed thread bar (2) tip end is inserted and passes framework (4) crossbeam central through hole, internal thread through hole threaded engagement with abutment sleeve (1), constitute a kind of medical extraction apparatus for head of femur.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620057105.5U CN205514866U (en) | 2016-01-21 | 2016-01-21 | Medical femoral head extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620057105.5U CN205514866U (en) | 2016-01-21 | 2016-01-21 | Medical femoral head extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205514866U true CN205514866U (en) | 2016-08-31 |
Family
ID=56765986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620057105.5U Expired - Fee Related CN205514866U (en) | 2016-01-21 | 2016-01-21 | Medical femoral head extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205514866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109480953A (en) * | 2018-11-23 | 2019-03-19 | 青岛山大齐鲁医院（山东大学齐鲁医院（青岛）） | Femoral head extraction instrument |
| CN109938815A (en) * | 2019-04-09 | 2019-06-28 | 北京大学第三医院 | Femoral head extraction device |
-
2016
- 2016-01-21 CN CN201620057105.5U patent/CN205514866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109480953A (en) * | 2018-11-23 | 2019-03-19 | 青岛山大齐鲁医院（山东大学齐鲁医院（青岛）） | Femoral head extraction instrument |
| CN109938815A (en) * | 2019-04-09 | 2019-06-28 | 北京大学第三医院 | Femoral head extraction device |
| CN109938815B (en) * | 2019-04-09 | 2023-10-27 | 北京爱康宜诚医疗器材有限公司 | Femoral head extraction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160831 Termination date: 20190121 |