CN201861736U - Nickel titanium temperature memory alloy vertebral body resetting fusion device with auxiliary unfolding pull rod - Google Patents
Nickel titanium temperature memory alloy vertebral body resetting fusion device with auxiliary unfolding pull rod Download PDFInfo
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- CN201861736U CN201861736U CN2010206292871U CN201020629287U CN201861736U CN 201861736 U CN201861736 U CN 201861736U CN 2010206292871 U CN2010206292871 U CN 2010206292871U CN 201020629287 U CN201020629287 U CN 201020629287U CN 201861736 U CN201861736 U CN 201861736U
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- vertebral body
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- memory alloy
- pull rod
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Abstract
The utility model discloses a nickel titanium temperature memory alloy vertebral body resetting fusion device with an auxiliary unfolding pull rod, which is used for treating the vertebral collapse. The vertebral body resetting fusion device consists of a resetting device and an auxiliary unfolding pull rod, wherein the resetting device consists of a head, a memory alloy blade and a tail, the head and the tail are discs, the middle of each disc is provided with a threaded hole, the middle memory alloy blade adopts 4-8 pieces of alloy blades, the blades are evenly distributed on the periphery, the widths of the blades are from 1.5mm to 2mm, and the thicknesses of the blades are from 0.2mm to 0.5mm. The auxiliary unfolding pull rod is 'T'-shaped, the head of the auxiliary unfolding pull rod is provided with a threaded column, and the middle of the auxiliary unfolding pull rod has a segment of thin rod which can be penetrated into a screw hole at the head of the resetting device. The nickel titanium temperature memory alloy vertebral body resetting fusion device has the advantages that due to the surface contact between the blade-shaped memory alloy and the end plate of the vertebral body the force application condition of the vertebral body during resetting is improved, and the tension caused by arching the memory alloy is improved; and due to the auxiliary unfolding pull rod, the arching height of the resetting device is guaranteed, the vertebral body can be completely reset, and the reliability of the treatment is improved.
Description
Technical field
This patent relates to the medical apparatus structure-design technique, refers in particular to a kind of auxiliary nickel titanium temperature memorial alloy vertebral body that struts pull bar fusion device that resets that has, and it is used for the treatment of vertebral compression fracture.
Background technology
Patent of invention " a kind of device that is used for the treatment of vertebral compression fracture " (China Patent No.: ZL200624715.6) disclose a kind of structure of the property implanted nickel titanium temperature memorial alloy orthopedic repositor, this orthopedic repositor is converged the head of portion by memory alloy wire, body three parts that nearly silk is closed in afterbody and arc memory constitute, wherein the arc memory body that closes nearly silk is made of 4-8 thigh memory alloy wire, positor is plastic morpheme tubulose under the frozen water temperature, but implant after the cone complex under the effect of body temperature, the memory alloy wire expansion is arched, in vertebral body, produce tension force, with cracked, loose, the vertebral body spongy bone distraction reduction that subsides recovers the vertebral body geometric shape.
Above-mentioned nickel titanium temperature memorial alloy orthopedic repositor has the following disadvantages, because expanding by memory alloy wire, positor arches, in vertebral body, produce tension force, with vertebral body spongy bone distraction reduction cracked, that loosen, subside, contacting between memory alloy wire and the vertebral body is the line contact, the stress condition of fractured vertebral body in reseting procedure is not ideal, and positor tension force deficiency, memory alloy wire arch insufficient height and cause vertebral body not reset fully.
Summary of the invention
The purpose of this patent provides a kind of improved nickel titanium temperature memorial alloy vertebral body fusion device that resets, and solves the arch technical problem of insufficient height of the positor tension force deficiency, the memory alloy wire that exist in the prior art.
This patent is a kind of have the auxiliary nickel titanium temperature memorial alloy vertebral body that struts pull bar reset fusion device structure as shown in Figure 1, vertebral body resets fusion device by positor with auxiliary strut pull bar two parts and constitute, positor is tubular under the frozen water temperature, it is by head 1, memorial alloy blade 2 and afterbody 3 constitute, head is identical with the planform of afterbody, it is a disk, middle respectively have one identical and auxiliaryly strut screw 1-1 and the 3-1 that pull bar 4 head double-screw bolt 4-1 match, intermediary memorial alloy blade 2 adopts 4-8 sheet alloy vane, uniform distribution on circumference, blade adopts the nickel titanium temperature memory alloy material, width of blade is 1.5mm to 2mm, the thickness of blade is 0.2mm to 0.5mm, because the head 1 of positor is identical with the structure of afterbody 3, so the head of positor and afterbody can exchange.Auxiliary strut pull bar 4 structures shown in accompanying drawing 1 (c) figure, the auxiliary pull bar 4 of strutting is made by rustless steel, is "T"-shaped structure, and head has a threaded post 4-1, and the centre section of having carefully bar 4-2 can penetrate positor head screw 3-1.Positor is when implanting the cone of fracture as shown in Figure 2, earlier positor is contained in auxiliary strutting on the pull bar 4, the auxiliary rod head threaded post 4-1 that struts screws among the positor afterbody screw 3-1, positor is behind the vertebral body of implanting fracture, memorial alloy blade 2 arches under the effect of body temperature and is the lantern shape, with vertebral body spongy bone distraction reduction cracked, that loosen, subside, when arching when highly not enough, the auxiliary pull bar that struts of rotation is received handle, the positor afterbody moves backward, positor arches highly to be increased, thereby vertebral body is resetted fully.
The advantage of this patent is: contacting between blade shaped memorial alloy and the vertebral body is the face contact, improved the stress condition of vertebral body in reseting procedure, improved the tension force when memorial alloy arches; The auxiliary pull bar that struts has guaranteed arching highly of positor, and vertebral body can be resetted fully, has improved the reliability of treatment, and in addition, positor adopts head, tail symmetrical structure, has made things convenient for operation, the use of doctor in therapeutic process.
Description of drawings
Fig. 1: have the structure chart of assisting the nickel titanium temperature memorial alloy vertebral body that struts pull bar to reset fusion device, wherein (a) is the structure chart of positor, (b) is the profile of positor at memorial alloy blade place, (c) is the auxiliary structure chart that struts pull bar; Among the figure, 1---head; 1-1---the screw on the head; 2---the memorial alloy blade; 3---afterbody; 3-1---the screw on the afterbody; 4---the auxiliary pull bar that struts; 4-1---threaded post; 4-1---thin bar.
Fig. 2: positor and positor are installed in the auxiliary picture that struts on the pull bar.
The specific embodiment
1 described structure with reference to the accompanying drawings, we have designed as shown in Figure 2 a kind of and have had the auxiliary nickel titanium temperature memorial alloy vertebral body that the struts pull bar fusion device that resets, and wherein the positor design parameter is as follows:
Positor length overall: 29.5mm;
Head, tail diameter: Ф 5.5mm;
Head, afterbody screw: M2.5;
Memorial alloy blade: 6;
Blade is long: 24.5mm;
Blade is wide: 1.5mm;
Blade is thick: 0.5mm.
The auxiliary pull bar design parameter that struts is as follows:
Threaded post 4-1:M2.5;
Thin bar 4-1 diameter: Ф 1.5mm;
Thin bar 4-1 is long: 20mm.
Claims (2)
1. one kind has the auxiliary nickel titanium temperature memorial alloy vertebral body that the struts pull bar fusion device that resets, it is by positor and auxiliary strut pull bar two parts and constitute, it is characterized in that: described positor is made of head (1), memorial alloy blade (2) and afterbody (3), head is identical with the planform of afterbody, it is a disk, middle respectively have an identical and auxiliary screw (1-1) that pull bar (4) head double-screw bolt (4-1) matches and (3-1) of strutting, intermediary 4-8 sheet memorial alloy blade (a 2) uniform distribution on circumference; Described rustless steel is auxiliary to strut pull bar (4) and is "T"-shaped structure, and head has a threaded post (4-1), and the centre section of having can penetrate the thin bar (4-2) of positor head screw (3-1).
2. a kind of auxiliary nickel titanium temperature memorial alloy vertebral body that struts pull bar fusion device that resets that has according to claim 1, it is characterized in that: the width of blade of described memorial alloy blade (2) is 1.5mm to 2mm, the thickness of blade is 0.2mm to 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206292871U CN201861736U (en) | 2010-11-26 | 2010-11-26 | Nickel titanium temperature memory alloy vertebral body resetting fusion device with auxiliary unfolding pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206292871U CN201861736U (en) | 2010-11-26 | 2010-11-26 | Nickel titanium temperature memory alloy vertebral body resetting fusion device with auxiliary unfolding pull rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201861736U true CN201861736U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206292871U Expired - Fee Related CN201861736U (en) | 2010-11-26 | 2010-11-26 | Nickel titanium temperature memory alloy vertebral body resetting fusion device with auxiliary unfolding pull rod |
Country Status (1)
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| CN (1) | CN201861736U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319127A (en) * | 2011-09-30 | 2012-01-18 | 李峰 | Built-in bone support device |
| CN105361938A (en) * | 2015-10-16 | 2016-03-02 | 广州迈普再生医学科技有限公司 | Scoliosis internal fixation correcting device with 4D effect and production method thereof |
| CN107049567A (en) * | 2017-04-19 | 2017-08-18 | 北京爱康宜诚医疗器材有限公司 | Bone filling device |
-
2010
- 2010-11-26 CN CN2010206292871U patent/CN201861736U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319127A (en) * | 2011-09-30 | 2012-01-18 | 李峰 | Built-in bone support device |
| CN105361938A (en) * | 2015-10-16 | 2016-03-02 | 广州迈普再生医学科技有限公司 | Scoliosis internal fixation correcting device with 4D effect and production method thereof |
| CN105361938B (en) * | 2015-10-16 | 2017-09-12 | 广州迈普再生医学科技有限公司 | Fixed orthodontic device and preparation method thereof in scoliosis with 4D effects |
| CN107049567A (en) * | 2017-04-19 | 2017-08-18 | 北京爱康宜诚医疗器材有限公司 | Bone filling device |
| CN107049567B (en) * | 2017-04-19 | 2019-11-12 | 北京爱康宜诚医疗器材有限公司 | Bone filling device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110615 Termination date: 20111126 |