CN203138650U - Improved bone marrow core decompression surgical instrument for femoral head necrosis - Google Patents
Improved bone marrow core decompression surgical instrument for femoral head necrosis Download PDFInfo
- Publication number
- CN203138650U CN203138650U CN 201320009302 CN201320009302U CN203138650U CN 203138650 U CN203138650 U CN 203138650U CN 201320009302 CN201320009302 CN 201320009302 CN 201320009302 U CN201320009302 U CN 201320009302U CN 203138650 U CN203138650 U CN 203138650U
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- China
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- pilot sleeve
- head necrosis
- core decompression
- drilling rod
- bone marrow
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Abstract
An improved bone marrow core decompression surgical instrument for femoral head necrosis is characterized by comprising a pilot sleeve, a flexible drill rod and a drill; the cylindrical pilot sleeve is provided with a sealed dome at the front, the inner hole of the pilot sleeve curves smoothly to one side on the front portion of the pilot sleeve and intersects with the outer side of pilot sleeve to form a lateral opening; and an external diameter of the flexible drill rod is in sliding match with an internal diameter of the pilot sleeve, and the drill is arranged at the front end of the flexible drill rod. The improved bone marrow core decompression surgical instrument for the femoral head necrosis has the advantages that the pilot sleeve does little harm to bone of femoral neck during surgical operation, an inclined opening of a front head of the pilot sleeve can allow the drill of the flexible drill rod extending from the opening to fully polish and cut, so that the drill can be operated in multiple directions by revolving of the pilot sleeve, and decompression range is more thorough. Besides, the improved bone marrow core decompression surgical instrument is simple in structure and convenient and practical.
Description
Technical field
This utility model relates to a kind of femur head necrosis core decompression operating theater instruments of improvement, belongs to the orthopedic medical device technical field.
Background technology
International bone circulating research association and U.S. orthopedist association are defined as the necrosis of adult thighbone head: femoral head blood is for interruption or impaired, cause the dead and reparation subsequently of osteocyte and bone marrow composition, cause the disease of femoral head structural change, collapse of the femoral head and joint function disturbance then.Femur head necrosis pathology is feature with near end of thighbone epiphysis blood supply disorder, takes place subsequently that subchondral bone necrosis, articular cartilage are subsided, the joint relation is disorderly, is a kind of disability rate disease with high.Along with industrialized process acceleration and diet, environment etc. influence, sickness rate raises year by year in recent years, and age of onset has rejuvenation trend.Core decompression can reduce intra-osteal pressure, eases the pain, and improves microcirculation in the bone, alleviates ischemia, and is beneficial to blood vessel and grows into, and promotes the creeping substitution of sequestrum, tissue repair.But the bit diameter of the trepan that traditional Therapeutic Method is used is big, is 8 or 10mm, causes the bore area diameter bigger, and near end of thighbone and an interior mechanics intensity decreases cause the near end of thighbone drill hole to fracture and articular surface subsides.In addition, because decompression position is single, be difficult to reach the abundant decompression at osteonecrosis position.The core decompression of improvement adopts many fine needles to be reduced pressure in the osteonecrosis district, can effectively reduce pressure to the necrotic area, it is thorough relatively to remove sequestrum, simultaneously because bore diameter is little, there is the connection of bone each other in each boring, femoral head has the support of bone, and is little to femur and the influence of capital biomechanical strength, can avoid above complication.But same because the fine needle aperture is little, exist the femur head necrosis bone to be difficult for the shortcoming of thoroughly removing.
Summary of the invention
Technical problem to be solved in the utility model is in order to be that service aisle bone destruction basis reaches the femur head necrosis district and thoroughly reduces pressure reduce neck of femur as far as possible, and a kind of Wicresoft is provided, the neck of femur sclerotin is destroyed few, convenient simple and direct femoral head core decompression device.
This utility model is to realize effect like this: a kind of femur head necrosis core decompression operating theater instruments of improvement, it is characterized in that, comprise pilot sleeve, soft drilling rod and drill bit, the front end of the pilot sleeve of pipe shape is the dome of sealing, and the endoporus of this pilot sleeve intersects the formation lateral port in the front portion of pilot sleeve to the slick and sly bending of a side and with the outside of pilot sleeve; The external diameter of soft drilling rod and the internal diameter of pilot sleeve are slidingly matched, and are provided with drill bit at the front end of this soft drilling rod.
The outside, rear end at described pilot sleeve is provided with the location mark.
Outside being positioned at described pilot sleeve rear end and soft drilling rod be equipped with the limit dark knob, this limits the center of dark knob to be screwed on the soft drilling rod by screw.
The external diameter of described pilot sleeve is 4.5-6mm, and corresponding internal diameter is 3.2-4.5mm.
The beneficial effects of the utility model: the pilot sleeve of operation technique is less to the sclerotin injury of neck of femur, the head end inclined open makes the soft drill bit that stretches out from opening polish widely and cut, and carry out multi-direction operation by the rotation of pilot sleeve, pressure relief ranges is more thorough; Simple in structure, convenient and practical.
Description of drawings
Fig. 1 is the axial sectional structure sketch map of population structure of the present utility model;
Cross-sectional schematic when Fig. 2 is this utility model application.
Description of reference numerals: 1, the dome of pilot sleeve, 2, drill bit, 3, soft drilling rod, 4, the lateral port on the pilot sleeve, 5, pilot sleeve, 6, sleeve location mark, 7, limit dark knob, 8, femoral head, 9, greater trochanter, 10, femoral shaft.
The specific embodiment
Referring to Fig. 1, the femur head necrosis core decompression operating theater instruments of a kind of improvement of this utility model, it is characterized in that, comprise pilot sleeve 5, soft drilling rod 3 and drill bit 2, the front end of the pilot sleeve 5 of pipe shape is the dome 1 of sealing, and the endoporus of this pilot sleeve 5 intersects formation lateral port 4 in the front portion of pilot sleeve to the slick and sly bending of a side and with the outside of pilot sleeve.The internal diameter of the external diameter of soft drilling rod 3 and pilot sleeve 5 is slidingly matched, and is connected with the drill bit 2 in same footpath at the front end of this soft drilling rod 3.Be provided with location mark 6 (to lateral port 4 location of pilot sleeve 5) in the outside, rear end of described pilot sleeve 5.Be equipped with at the soft drilling rod 3 that is positioned at pilot sleeve 5 rear ends outsides and prevent the dark knob 7 of the dark excessively limit of drill bit, soft drilling rod 3 rear portion corresponding site designs have external screw thread, and this limits the center of dark knob to be screwed on the external screw thread of soft drilling rod 3 by its female thread.
The external diameter of described pilot sleeve 5 is 4.5-6mm, and corresponding internal diameter is 3.2-4.5mm.Typical two kinds of designs are: the external diameter of pilot sleeve 5 and internal diameter are respectively 4.5mm and 3.2mm and 6mm and 4.5mm.
Referring to Fig. 2, this utility model is when using, at first at the bottom row longitudinal cut of thigh lateral femur tuberosity 9, peel off ligament and muscle, the lateral wall of exposing femoral shaft 10, and the direction boring of aiming at femoral head 8, the aperture is slightly larger than the external diameter of pilot sleeve 5 and (selects the thickness of boring according to the scope of femur head necrosis, if necrotic extent is less, select for use the sleeve of 6mm external diameter to reduce pressure.If scope is wide, select the pilot sleeve 5 of two or three parallel 4.5mm external diameters for use), drilling depth reaches the position that needs decompression.After boring is finished, pilot sleeve 5 is inserted in the boring, the drill bit 2 of soft drilling rod 3 stretches out from the lateral port 4 of pilot sleeve 5 and cuts, and according to diseased region adjustment decompression direction and scope, carry out cleaning down with long metal pipe, remove sequestrum, above-mentioned being operated under the X-ray supervision finished.
Claims (4)
1. the femur head necrosis core decompression operating theater instruments of an improvement, it is characterized in that, comprise pilot sleeve, soft drilling rod and drill bit, the front end of the pilot sleeve of pipe shape is the dome of sealing, and the endoporus of this pilot sleeve intersects the formation lateral port in the front portion of pilot sleeve to the slick and sly bending of a side and with the outside of pilot sleeve; The external diameter of soft drilling rod and the internal diameter of pilot sleeve are slidingly matched, and are provided with drill bit at the front end of this soft drilling rod.
2. the femur head necrosis core decompression operating theater instruments of improvement according to claim 1 is characterized in that, is provided with the location mark in the outside, rear end of described pilot sleeve.
3. the femur head necrosis core decompression operating theater instruments of improvement according to claim 1 is characterized in that, at the soft drilling rod that is positioned at outside, described pilot sleeve rear end the dark knob of limit is housed, and this limits the center of dark knob to be screwed on the soft drilling rod by screw.
4. the femur head necrosis core decompression operating theater instruments of improvement according to claim 1 is characterized in that, the external diameter of described pilot sleeve is 4.5-6mm, and corresponding internal diameter is 3.2-4.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009302 CN203138650U (en) | 2013-01-09 | 2013-01-09 | Improved bone marrow core decompression surgical instrument for femoral head necrosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009302 CN203138650U (en) | 2013-01-09 | 2013-01-09 | Improved bone marrow core decompression surgical instrument for femoral head necrosis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203138650U true CN203138650U (en) | 2013-08-21 |
Family
ID=48966214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320009302 Expired - Fee Related CN203138650U (en) | 2013-01-09 | 2013-01-09 | Improved bone marrow core decompression surgical instrument for femoral head necrosis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203138650U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989502A (en) * | 2014-06-13 | 2014-08-20 | 王京生 | Femoral head necrosis drilling and decompression drill and bone cement stiffening bar matched with drill in use |
| CN108143519A (en) * | 2017-12-23 | 2018-06-12 | 湖南华翔增量制造股份有限公司 | Collapse of femoral head prosthetic device |
| CN109998633A (en) * | 2019-04-19 | 2019-07-12 | 中国人民解放军联勤保障部队第九0四医院 | A kind of femoral head necrosis core decompression device |
-
2013
- 2013-01-09 CN CN 201320009302 patent/CN203138650U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103989502A (en) * | 2014-06-13 | 2014-08-20 | 王京生 | Femoral head necrosis drilling and decompression drill and bone cement stiffening bar matched with drill in use |
| CN108143519A (en) * | 2017-12-23 | 2018-06-12 | 湖南华翔增量制造股份有限公司 | Collapse of femoral head prosthetic device |
| CN109998633A (en) * | 2019-04-19 | 2019-07-12 | 中国人民解放军联勤保障部队第九0四医院 | A kind of femoral head necrosis core decompression device |
| CN109998633B (en) * | 2019-04-19 | 2024-04-05 | 中国人民解放军联勤保障部队第九0四医院 | Femoral head necrosis marrow core pressure reducing device |
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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: 20130821 Termination date: 20140109 |