CN2299593Y - Adjustable pressure fixing expansion bolt for fracture of neck of femur - Google Patents
Adjustable pressure fixing expansion bolt for fracture of neck of femur Download PDFInfo
- Publication number
- CN2299593Y CN2299593Y CN 97223013 CN97223013U CN2299593Y CN 2299593 Y CN2299593 Y CN 2299593Y CN 97223013 CN97223013 CN 97223013 CN 97223013 U CN97223013 U CN 97223013U CN 2299593 Y CN2299593 Y CN 2299593Y
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- CN
- China
- Prior art keywords
- fracture
- expansion sleeve
- expansion
- screw thread
- bolt
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- Expired - Fee Related
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Abstract
The utility model discloses an adjustable pressure fixing expansion bolt for fracture of the neck of the femur, relating to a fracture fixation instrument for medical treatment. The utility model is composed of an expansion sleeve and a screw thread thimble. The front end of the expansion sleeve is in a cross gap shape, and the front end of the screw thread thimble is in a cone needle head shape. The screw thread thimble is screwed by a screwdriver, and the cross gap arranged at the front end of the expansion sleeve is expanded in four directions. The position of the femoral head can be adjusted by rotating a flange disc arranged at the rear end of the expansion sleeve. A compression screw is screwed, and two bone broken ends are tightly combined. The expansion bolt is suitable for fixing various fractures of the neck of the femur, and the rotation displacement of the femoral head can be adjusted. The utility model has the advantages of simple operation, less damage and good pressurizing and fixation effects.
Description
This utility model relates to a kind of medical fracture fixation apparatus, especially the adjustable pressurization fixed expansion of a kind of fracture of femoral neck bolt of being made up of expansion sleeve, screw thread thimble.
Medical in the prior art fracture fixation apparatus has: three cuttves nail internal fixation, the compression screw nail that has spring, fixedly waiting of many pieces of screw needles in fracture fixation, particularly in the fracture of femoral neck fixation procedure, there is following problem, first, cause bone stump to separate easily, to bone stump pressurization weak effect, healing time is long.The second, big to the damage of neck of femur, easily cause ischemic necrosis of femoral head.The 3rd, can't solve the femoral head spinning reduction.
The purpose of this utility model provides and a kind ofly can play pressurization, can adjust the femoral head spinning reduction again, damage little, fixed, cost is low, the fracture of femoral neck pressurization fixed expansion bolt that is easy to apply.
The purpose of this utility model realizes in the following manner, the adjustable pressurization fixed expansion of a kind of fracture of femoral neck bolt, by expansion sleeve 1, screw thread thimble 2 is formed, it is characterized in that having annular gap 4 between expansion sleeve 1 and the screw thread thimble 2, expansion sleeve 1 front end is cruciate flower gap 5, be nut in expansion sleeve 1 rear end and promptly be female thread, screw thread thimble 2 front ends are conical syringe needle 6, screw thread thimble 2 rear ends are bolt and promptly are pin thread, with screwdriver rotary screwing thread thimble 2, at expansion sleeve front end cruciate flower gap 5 under the pressure of the conical syringe needle 6 of screw thread thimble front end, expansion sleeve front end cruciate flower gap 5 is opened to four direction, prop up unsettled from disconnected femoral head, thereby play firm fixation.
The purpose of this utility model further realizes in the following manner, according to the adjustable pressurization fixed expansion of above-described a kind of fracture of femoral neck bolt, it is characterized in that ring flange 3 of expansion sleeve 1 rear end welding, blocking ring flange hole 8 on the ring flange 3 with spring caliper is rotated and can adjusts the femoral head position, then forcing screw 7 being put into ring flange hole 8 screws, the increase of screwing the degree of depth along with forcing screw 7, the expansion bolt that fixes is under the effect of counteracting force, also increase thereupon, two bone stumps are drawn close, thereby the pressurization of playing is combined closely between two knochenbruch.
The adjustable pressurization fixed expansion of a kind of fracture of femoral neck of this utility model bolt is compared with the fracture fixation equipment in the prior art, has the following advantages:
1, the adjustable pressurization fixed expansion of this fracture of femoral neck bolt great advantage is to adjust capital rotation displacement, is that other fixation device is not accomplished.
2, this expansion bolt is simple to operate in when operation, damage little, can the secondary damage sclerotin when withdrawing from bolt, and can in the tunnel that withdraws from, get partial spongy bone bone grafting simultaneously, make the incidence rate of ischemic necrosis of femoral head be reduced to minimum.
3, this expansion bolt fixation, the pressurization effect is better than other fixation device.Operation back patient can early ambulation, and especially to the old people, early ambulation can be avoided generation, the development of a lot of complication, thereby has reduced patient's misery, has alleviated patient's financial burden, and cost is low, is easy to apply.
Description of drawings:
Fig. 1 is the adjustable pressurization fixed expansion of a fracture of femoral neck bolt use principle sketch map.
Fig. 2 is the adjustable pressurization fixed expansion of a fracture of femoral neck bolt arrangement sketch map.
Fig. 3 is that Fig. 2 A is to view.
Fig. 4 is that Fig. 2 B is to view.
More than among each figure: 1-expansion sleeve, 2-screw thread thimble, 3-ring flange, 4-annular gap, 5-cruciate flower gap, the conical syringe needle of 6-, 7-forcing screw, 8-ring flange hole.
This utility model is described in further detail below in conjunction with accompanying drawing:
With the fracture of femoral neck is example, get into the femoral head central part with drill bit, the expansion bolt that will pressurize inserts, with screwdriver rotary screwing thread thimble 2, the expansion sleeve front end swells, prop up femoral head and make it to fixedly secure,, be easy to cause capital rotation displacement after the fracture or when beating tunnel because the fracture of femoral neck near-end is that stature mortar structure is very unstable, (the time with other fixed apparatus, fixing insecure to bone stump can only be used manual reduction, and reset effect is poor.) screw ring flange hole 8 on the ring flange 3 with the jump ring clamp, make the femoral head spinning reduction, behind the holding position, pressing 7 four pieces of forcing screws on the ring flange hole 8, bone stump is drawn close added press fit, four pieces of screws are caught the Cortex Lycii layer securely, and bolt can not rotate.After treating union of fracture, outside rotary screwing thread thimble 2, expansion sleeve 1 front end dilation rebounds automatically, returns forcing screw, screws with spring caliper and transfers to whole bolt.
But this expansion bolt except that fixed fracture of femoral neck, fixing intertrochanteric fracture also, fracture, fracture of the tibial plateau, olecranal fracture between condyle.Be made into series of products according to individual variation and fixed position difference.
This expansion bolt is made with steel, and expansion sleeve 1 and ring flange 3 are welded into a whole, but also car is integral, blunt-edged burr, plating one deck chromium.
Claims (2)
1, the adjustable pressurization fixed expansion of a kind of fracture of femoral neck bolt, form by expansion sleeve (1), screw thread thimble (2), it is characterized in that having annular gap (4) between expansion sleeve (1) and the screw thread thimble (2), expansion sleeve (1) front end is cruciate flower gap (5), screw thread thimble (2) front end is conical syringe needle (6), with screwdriver rotary screwing thread thimble (2), expansion sleeve front end cruciate flower gap is opened to four direction.
2, the adjustable pressurization fixed expansion of a kind of fracture of femoral neck according to claim 1 bolt, it is characterized in that expansion sleeve (a 1) rear end welding ring flange (3), block ring flange hole (8) on the ring flange (3) with spring caliper and be rotated and adjust the femoral head position, then forcing screw (7) is put into ring flange hole (8) and screw to make between two knochenbruch and combine closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97223013 CN2299593Y (en) | 1997-05-18 | 1997-05-18 | Adjustable pressure fixing expansion bolt for fracture of neck of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97223013 CN2299593Y (en) | 1997-05-18 | 1997-05-18 | Adjustable pressure fixing expansion bolt for fracture of neck of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299593Y true CN2299593Y (en) | 1998-12-09 |
Family
ID=33937887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97223013 Expired - Fee Related CN2299593Y (en) | 1997-05-18 | 1997-05-18 | Adjustable pressure fixing expansion bolt for fracture of neck of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299593Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824207A (en) * | 2011-06-16 | 2012-12-19 | 北京爱康宜诚医疗器材股份有限公司 | Support body in expansion fixing whirlbone |
| CN107028649A (en) * | 2017-05-23 | 2017-08-11 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind is used for sufferers of osteoporosis face screw and strengthens fixing device |
| US9799414B2 (en) | 2010-09-03 | 2017-10-24 | Atomic Energy Of Canada Limited | Nuclear fuel bundle containing thorium and nuclear reactor comprising same |
| US10176898B2 (en) | 2010-11-15 | 2019-01-08 | Atomic Energy Of Canada Limited | Nuclear fuel containing a neutron absorber |
| CN109938821A (en) * | 2019-03-29 | 2019-06-28 | 中南大学湘雅医院 | Just the umbrella bone blot dismantled |
| US10950356B2 (en) | 2010-11-15 | 2021-03-16 | Atomic Energy Of Canada Limited | Nuclear fuel containing recycled and depleted uranium, and nuclear fuel bundle and nuclear reactor comprising same |
| CN114449366A (en) * | 2021-12-21 | 2022-05-06 | 陕西小保当矿业有限公司 | Mine underground 5G network embedded base station |
-
1997
- 1997-05-18 CN CN 97223013 patent/CN2299593Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9799414B2 (en) | 2010-09-03 | 2017-10-24 | Atomic Energy Of Canada Limited | Nuclear fuel bundle containing thorium and nuclear reactor comprising same |
| US10176898B2 (en) | 2010-11-15 | 2019-01-08 | Atomic Energy Of Canada Limited | Nuclear fuel containing a neutron absorber |
| US10950356B2 (en) | 2010-11-15 | 2021-03-16 | Atomic Energy Of Canada Limited | Nuclear fuel containing recycled and depleted uranium, and nuclear fuel bundle and nuclear reactor comprising same |
| CN102824207A (en) * | 2011-06-16 | 2012-12-19 | 北京爱康宜诚医疗器材股份有限公司 | Support body in expansion fixing whirlbone |
| CN102824207B (en) * | 2011-06-16 | 2015-03-25 | 北京爱康宜诚医疗器材股份有限公司 | Support body in expansion fixing whirlbone |
| CN107028649A (en) * | 2017-05-23 | 2017-08-11 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | One kind is used for sufferers of osteoporosis face screw and strengthens fixing device |
| CN107028649B (en) * | 2017-05-23 | 2024-03-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Screw reinforcing and fixing device for osteoporosis patient |
| CN109938821A (en) * | 2019-03-29 | 2019-06-28 | 中南大学湘雅医院 | Just the umbrella bone blot dismantled |
| CN114449366A (en) * | 2021-12-21 | 2022-05-06 | 陕西小保当矿业有限公司 | Mine underground 5G network embedded base station |
| CN114449366B (en) * | 2021-12-21 | 2023-11-03 | 陕西小保当矿业有限公司 | Mine underground 5G network embedded base station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |