CN2428103Y - Automatic resetting device for burst bone-piece of centrum - Google Patents
Automatic resetting device for burst bone-piece of centrum Download PDFInfo
- Publication number
- CN2428103Y CN2428103Y CN 00230355 CN00230355U CN2428103Y CN 2428103 Y CN2428103 Y CN 2428103Y CN 00230355 CN00230355 CN 00230355 CN 00230355 U CN00230355 U CN 00230355U CN 2428103 Y CN2428103 Y CN 2428103Y
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pushing ram
- bone piece
- vertebral body
- automatic reset
- 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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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to an automatic resetting device for the burst bone block of a centrum, which is characterized in that the utility model comprises a sleeve barrel, an active pushing rod arranged in the sleeve barrel by means of threaded connection, a passive pushing rod inserted and arranged in the sleeve barrel by means of movable fit, a screw nut sheathed outside the sleeve barrel and a double action hook suspended above the screw nut, wherein, the lower end of the active pushing rod and the upper end of the passive pushing rod are mutually contacted, and the lower end of the passive pushing rod is fixedly connected with a compression resetting piece. The device has the advantages that structural design is reasonable, use and operation are convenient, the bone block is gradually reduced by that the principle of gradual advancing and pressing is used, intraoperative bleeding can be reduced, the chance of damaging nerves by the traction of a hard mask is also reduced, a patient's pain is relieved, and the clinical tryout effect is good.
Description
This utility model relates to a kind of orthopaedics medical apparatus and instruments, especially a kind of vertebral body explosion bone piece automatic reset, and it is specially adapted to reset in the operation of vertebral body bursting fracture bone piece.
Orthopaedics is clinical at present thinks, the spinal canal stenosis that displacement causes to vertebral body bursting fracture bone piece must be taked the treatment measure, and existing method is as follows: when bone piece displacement less than sagittal canal diameter 1/2 the time, utilize Ha Shi rod or pedicle of vertebral arch internal fixation device to strut, make the bone block reset by the tension force of posterior longitudinal ligament; When bone piece displacement surpass sagittal canal diameter 1/2 the time, show that posterior longitudinal ligament ruptures, how can not utilize its tension force with the bone block reset, can in operation, dura mater be led to a side, with apparatus the bone piece is taken out, or with apparatus it is knocked forward and to reset.But aforesaid operations increases the weight of nerve injury easily, increases amount of bleeding, increases patient's misery and fear.For this reason, need a kind of bone piece of design apparatus that automatically resets.
The purpose of this utility model is just at above-mentioned existing in prior technology problem and custom-designed a kind of vertebral body explosion bone piece automatic reset, this automatic reset reasonable in design, use easy to operate, utilize to advance the principle of pressurization to make the bone block reset gradually gradually, clinical trial result is good.
The purpose of this utility model realizes by following scheme: this vertebral body explosion bone piece automatic reset comprises two-sided silk braid tube, is contained in this sleeve and active propulsion bar can displacement in sleeve and is inserted into passive pushing ram in the sleeve, is enclosed within the nut outside this sleeve and is suspended on two two-way hooks in the hanging hole that processes on the nut in mode movingly by thread connecting mode, the lower end of active propulsion bar contacts with the upper end of passive pushing ram, and the lower end of passive pushing ram is connected with the pressurization reseting plate that is bending.
In this utility model, the upper end of main pushing ram is provided with the hands handle; The nut that is enclosed within on the two-sided silk braid tube is a hex nut, is processed with a plurality of uniform hanging holes on it, in order to the adjustment of two-way hook holding position.
The active propulsion bar and the passive pushing ram that are contained in the sleeve can contact by conductive sphere, also can contact by cambered surface and the plane that its end processes, the transmission that its objective is the power that when rotation active propulsion bar, guarantees vertically downward, and passive pushing ram does not rotate the frictional force minimum.Be provided with passive pushing ram anticreep screw on the telescopic barrel of two-sided silk, in case this apparatus time spent not, passive pushing ram comes off from sleeve.
This automatic reset application process is as follows: the patient ventricumbent position, after finishing laminectomy for decompression, inserting pedicle of vertebral arch inner fixing device or Ha Shi rod, use the loosen adhesion of dura mater and displacement bone piece of nerve dissector, equally insert automatic reset with inserting nerve hook along dura mater surface radian, make thin and firm pressurization reseting plate be positioned at bone piece surface, after this needn't the tractive dura mater.Adjust the height of hex nut then, two-way hook is risen to the bait insert in its hole, following hook is lived adjacent vertebral plate up and down or inner fixer bar, and the patient holds handle rotation active propulsion bar, and strength transmission resets the bone piece forward for passive pushing ram and pressurization reseting plate.
Advantage of the present utility model is: because the active propulsion bar is to promote passive pushing ram by screw thread rotation, be welded in passive pushing ram end and be vertical pressurization reseting plate with it and have the advantages that thickness is little, rigidity is big, with the rotation of active propulsion bar, directly the vertebral body bone piece of subtend retrodisplacement does not pressurize and makes it to reset for it.This apparatus easy operating can reduce intraoperative hemorrhage, has also reduced the chance of tractive dura mater injured nerve, has alleviated patient's misery greatly.In addition, this automatic reset also has reasonable in design, uses convenience operation, is to utilize to advance the principle of pressurization to make the bone block reset gradually gradually, and clinical trial result is good.
Accompanying drawing is a structural front view of the present utility model.
This utility model is done below in conjunction with accompanying drawing and is described in further detail:
As shown in the figure: this vertebral body explosion bone piece automatic reset comprises two-sided silk braid tube (5), be contained in this sleeve and active propulsion bar (2) can displacement in sleeve and be inserted into passive pushing ram (1) in this sleeve by thread connecting mode in mode movingly, be enclosed within the outer nut (3) of this sleeve and be suspended on two two-way hooks (4) in the hanging hole that processes on this nut, the lower end of active propulsion bar (2) contacts by cambered surface and the plane that its end processes with the upper end of passive pushing ram (1), is provided with passive pushing ram anticreep screw (8) on the barrel of two-sided silk braid tube (5).The lower end of passive pushing ram (1) is connected with pressurization reseting plate (6).The upper end of active propulsion bar (2) is provided with handle (7); The nut (3) that is enclosed within on the two-sided silk braid tube (5) is a hex nut, is processed with a plurality of uniform hanging holes on it.
Claims (6)
1, a kind of vertebral body explosion bone piece automatic reset, it is characterized in that: it comprises two-sided silk braid tube (5), is contained in this sleeve and active propulsion bar (2) can displacement in sleeve and is inserted into passive pushing ram (1) in this sleeve, is enclosed within the nut (3) outside this sleeve and is suspended on two-way hook (4) in the hanging hole that processes on the nut in mode movingly by the mode that is threaded, the lower end of active propulsion bar (2) contacts with the upper end of passive pushing ram (1), and the lower end of passive pushing ram (1) is connected with the pressurization reseting plate (6) that is bending.
2, vertebral body explosion bone piece automatic reset according to claim 1, it is characterized in that: the upper end of main pushing ram (2) is provided with handle (7).
3, vertebral body explosion bone piece automatic reset according to claim 1, it is characterized in that: the active propulsion bar (2) and the passive pushing ram (1) that are contained in the sleeve (5) contact by conductive sphere.
4, vertebral body explosion bone piece automatic reset according to claim 1, it is characterized in that: the active propulsion bar (2) and the passive pushing ram (1) that are contained in the sleeve (5) contact by cambered surface and the plane that its end processes.
5, vertebral body explosion bone piece automatic reset according to claim 1 is characterized in that: be provided with passive pushing ram anticreep screw (8) on the barrel of two-sided silk braid tube (5).
6, vertebral body explosion bone piece automatic reset according to claim 1, it is characterized in that: the nut (3) that is enclosed within on the two-sided silk braid tube (5) is a hex nut, is processed with a plurality of uniform hanging holes on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00230355 CN2428103Y (en) | 2000-07-07 | 2000-07-07 | Automatic resetting device for burst bone-piece of centrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00230355 CN2428103Y (en) | 2000-07-07 | 2000-07-07 | Automatic resetting device for burst bone-piece of centrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2428103Y true CN2428103Y (en) | 2001-05-02 |
Family
ID=33593471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00230355 Expired - Fee Related CN2428103Y (en) | 2000-07-07 | 2000-07-07 | Automatic resetting device for burst bone-piece of centrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2428103Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102846344A (en) * | 2012-09-29 | 2013-01-02 | 苏州博习医疗科技有限公司 | Minimally invasive expansion tool used for spinal canal expansion |
| CN105310733A (en) * | 2015-12-12 | 2016-02-10 | 王振华 | Endoscope lower thoracic vertebra body expander |
| CN105796167A (en) * | 2016-05-27 | 2016-07-27 | 曾本强 | Intraspinal bone block repositor |
| CN106073873A (en) * | 2016-08-31 | 2016-11-09 | 山东威高骨科材料股份有限公司 | A kind of vertebra repositioning device |
-
2000
- 2000-07-07 CN CN 00230355 patent/CN2428103Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102846344A (en) * | 2012-09-29 | 2013-01-02 | 苏州博习医疗科技有限公司 | Minimally invasive expansion tool used for spinal canal expansion |
| CN105310733A (en) * | 2015-12-12 | 2016-02-10 | 王振华 | Endoscope lower thoracic vertebra body expander |
| CN105310733B (en) * | 2015-12-12 | 2017-05-31 | 王振华 | Hysteroscope hypocentrum dilator |
| CN105796167A (en) * | 2016-05-27 | 2016-07-27 | 曾本强 | Intraspinal bone block repositor |
| CN106073873A (en) * | 2016-08-31 | 2016-11-09 | 山东威高骨科材料股份有限公司 | A kind of vertebra repositioning device |
| CN106073873B (en) * | 2016-08-31 | 2019-02-05 | 山东威高骨科材料股份有限公司 | A kind of vertebra repositioning device |
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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 |