CN202537630U - Nickel-titanium memory alloy vertebral expansion support - Google Patents
Nickel-titanium memory alloy vertebral expansion support Download PDFInfo
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- CN202537630U CN202537630U CN2012201458121U CN201220145812U CN202537630U CN 202537630 U CN202537630 U CN 202537630U CN 2012201458121 U CN2012201458121 U CN 2012201458121U CN 201220145812 U CN201220145812 U CN 201220145812U CN 202537630 U CN202537630 U CN 202537630U
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Abstract
The utility model relates to a nickel-titanium memory alloy vertebral expansion support which comprises a support main body, a front-end support and a rear-end support, wherein the support main body is formed in the way that three or four crest-shape nickel-titanium memory alloy supports and the same number of trough-shape nickel-titanium memory alloy supports are sequentially connected in a staggered way and closed from end to end; and the support main body is shaped like a thin and straight circular tube at the temperature of 0-5 DEG C, and returns to the memorial silkworm cocoon shape at the body temperature. The nickel-titanium memory alloy vertebral expansion support solves the technical problem that the bone cement is leaked and gives out heat to cause series of complications such as catastrophic spinal cord, nerve root and paravertebral vessel burn and bone cement pulmonary embolism during the vertebral reduction and clinical surgery, and has the advantages that implantation is simple, convenient, scientific and easy, structure is simple, and operation is convenient, safe and reliable.
Description
Technical field
This utility model belongs to technical field of medical instruments, relates to a kind of vertebral body expandable stent, particularly a kind of vertebral body expandable stent with the ti-ni shape memory alloy material.
Background technology
Vertebral body expansion is a kind of operation form of spinal column orthopaedics in clinical, is primarily aimed at the modus operandi that osteoporosis, compressibility vertebral fracture are exercised.The expansion method of using clinically at present is through Minimally Invasive Surgery, and the external force effect that utilizes the hydraulic pressure sacculus forms cavity to the extruding of vertebral body spongy bone in vertebral body, vertebral body is reset to the physiology height, and the hydraulic pressure sacculus makes vertebral body form the bone cement that reinjects behind the cavity.And can cause because of the heating of bone cement seepage and a series of complication such as catastrophic spinal cord, nerve root and the other blood vessel of vertebra are burnt, bone cement pulmonary infarction to cause operative failure.
Summary of the invention
This utility model purpose provides a kind of ti-ni shape memory alloy vertebral body expandable stent, its solved vertebral body reset with clinical operation in the other blood vessel of catastrophic spinal cord, nerve root and vertebra that causes because of the heating of bone cement seepage burn, the technical problem of a series of complication such as bone cement pulmonary infarction.
The technical scheme of this utility model is:
A kind of ti-ni shape memory alloy vertebral body expandable stent; Comprise that rack body, front end support and the rear end is supported, said rack body is cross-linked successively by the trough shape ti-ni shape memory alloy support 12 of three or four crest shape ti-ni shape memory alloy supports 11 and equal number and the head and the tail closure forms; Said rack body presents thin straight pipe shape when temperature is 0-5 ℃, when human body temperature, reply the Bombyx bombycis shape for memory; Said front end supports and comprises and be arranged on each crest shape ti-ni shape memory alloy support 11 top and outward extending ti-ni shape memory alloy front end supporting member 2; Said front end supporting member demonstrates the laminated structure concordant with rack body when temperature is 0-5 ℃, when human body temperature, reply the laminated structure to the bending of rack body axis direction for memory; Said rear end is supported and is comprised and be arranged on each trough shape ti-ni shape memory alloy support 12 top and outward extending ti-ni shape memory alloy rear end supporting member 3; Said rear end supporting member demonstrates the laminated structure concordant with rack body when temperature is 0-5 ℃, when human body temperature, reply the laminated structure to the bending of rack body axis direction for memory.
Above-mentioned front end supporting member 2 is the annular slice structure; Said rear end supporting member 3 is the annular slice structure.
Be provided with transition bracket 4 between above-mentioned front end supporting member 2 and crest shape ti-ni shape memory alloy support 11 tops; Be provided with transition bracket 4 between said rear end supporting member 3 and trough shape ti-ni shape memory alloy support 12 tops.
The beneficial effect of this utility model is:
1. under controlled temperature conditions, implant in the compression vertebral body through Wicresoft's passage, simple and convenient during implantation.
2. ti-ni shape memory alloy vertebral body support Design scheme science is prone to row, and is simple in structure, easy to operate, safe and reliable, reached the purpose of clinical requirement.
Ti-ni shape memory alloy vertebral body expandable stent have that excellent biological compatibility, intensity are high, proportion is low, endurance, corrosion-resistant, wear-resistant, nonmagnetic, advantage such as have no side effect, can implant vertebral body for a long time.
4. ti-ni shape memory alloy vertebral body expandable stent is replied the Bombyx bombycis shape of memory under human body temperature, and the elasticity tension that on the cavity inner peripheral wall that air bag forms, is evenly distributed forms the integrated support to cavity, will compress the vertebral body support and reset.The cavity two ends do not stress, and can not cause damage to pedicle of vertebral arch.
5. ti-ni shape memory alloy vertebral body support is provided with transition bracket, can guarantee rack body seamlessly transitting to supporting member.
6. ti-ni shape memory alloy vertebral body expandable stent has guaranteed to compress support and the stressed buffering after the vertebral body of subsiding resets at the elasticity tension that is evenly distributed on the cavity inner peripheral wall; And in the cavity that supports, insert artificial bone's powder or other macromolecule absorbable materials, satisfy anterior vertebral at the stressed needs of the support of healing stage.
7. the implantation of ti-ni shape memory alloy vertebral plasty support has solved when sacculus resets cavity injection bone cement and has caused the heating of bone cement seepage to cause a series of complication such as the other blood vessel of catastrophic spinal cord, nerve root and vertebra is burnt, bone cement pulmonary infarction.
Description of drawings
Fig. 1 is the view of this utility model support in the time of 0-5 ℃;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the view of this utility model support when human body temperature;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the expanded view of Fig. 3;
Fig. 6 is the cavity that the hydraulic pressure sacculus forms at the vertebral body intramedullary expansion;
Fig. 7 is expandable stent is implanted vertebral body in the time of 0-5 ℃ a state;
Fig. 8 is expandable stent state behind the vertebral body intramedullary expansion when human body temperature.
Reference numeral: 11-crest shape ti-ni shape memory alloy support, 12-trough shape ti-ni shape memory alloy support, 2-ti-ni shape memory alloy front end supporting member, 3-rear end supporting member, 4-transition bracket.
The specific embodiment
This utility model ti-ni shape memory alloy vertebral body expandable stent; Comprise that rack body, front end support and the rear end is supported, four crest shapes of rack body ti-ni shape memory alloy support 11 and four trough shape ti-ni shape memory alloy supports 12 are cross-linked successively and the head and the tail closure forms; Rack body presents thin straight pipe shape when temperature is 0-5 ℃, when human body temperature, reply the Bombyx bombycis shape for memory; Front end supports and to comprise and be arranged on each crest shape ti-ni shape memory alloy support 11 top and outward extending ti-ni shape memory alloy front end supporting member 2; The front end supporting member demonstrates the laminated structure concordant with rack body when temperature is 0-5 ℃, when human body temperature, reply the laminated structure to the bending of rack body axis direction for memory; The rear end is supported and to be comprised and be arranged on each trough shape ti-ni shape memory alloy support 12 top and outward extending ti-ni shape memory alloy rear end supporting member 3; The rear end supporting member demonstrates the laminated structure concordant with rack body when temperature is 0-5 ℃, when human body temperature, reply the laminated structure to the bending of rack body axis direction for memory.For easy to process, front end supporting member 2 preferably adopts the annular slice structure with rear end supporting member 3; In case of necessity, can be provided with transition bracket 4 between front end supporting member 2 and crest shape ti-ni shape memory alloy support 11 tops; Be provided with transition bracket 4 between rear end supporting member 3 and trough shape ti-ni shape memory alloy support 12 tops.
In the kyphoplasty operation, insert expandable sacculus to anterior vertebral, reset through compression body is carried out in sacculus bath expansion, and make formation cavity in the compression body.It is thin directly pipe shape as shown in Figure 1 that ti-ni shape memory alloy vertebral body expandable stent is manufactured; Memorized shape is a Bombyx bombycis shape as shown in Figure 3; Under controlled temperature (0-5 ℃) condition, implant in the compression body cavity through Wicresoft's passage, (27-33 ℃) tubular bracket integral body is opened under human body temperature, replys the Bombyx bombycis shape into memory; The elasticity tension that on the cavity inner peripheral wall that air bag forms, is evenly distributed; Formation will be compressed the vertebral body support and reset the integrated support of cavity, reach normal physiology height.The cavity two ends that form do not stress, and can not cause damage to pedicle of vertebral arch.
Ti-ni shape memory alloy vertebral body expandable stent has guaranteed to compress support and the stressed buffering after the vertebral body of subsiding resets at the elasticity tension that is evenly distributed on the cavity inner peripheral wall; People's osteanagenesis or insert other macromolecule absorbable materials in cavity is satisfied anterior vertebral at the stressed needs of the support of healing stage.
Claims (3)
1. ti-ni shape memory alloy vertebral body expandable stent; Comprise that rack body, front end support and the rear end is supported, said rack body is cross-linked successively by the trough shape ti-ni shape memory alloy support (12) of three or four crest shape ti-ni shape memory alloy supports (11) and equal number and the head and the tail closure forms; Said rack body presents thin straight pipe shape when temperature is 0-5 ℃, when human body temperature, reply the Bombyx bombycis shape for memory; Said front end supports and comprises and be arranged on each crest shape ti-ni shape memory alloy support (11) top and outward extending ti-ni shape memory alloy front end supporting member (2); Said front end supporting member demonstrates the laminated structure concordant with rack body when temperature is 0-5 ℃, when human body temperature, reply the laminated structure to the bending of rack body axis direction for memory; Said rear end is supported and is comprised and be arranged on each trough shape ti-ni shape memory alloy support (12) top and outward extending ti-ni shape memory alloy rear end supporting member (3); Said rear end supporting member demonstrates the laminated structure concordant with rack body when temperature is 0-5 ℃, when human body temperature, reply the laminated structure to the bending of rack body axis direction for memory.
2. ti-ni shape memory alloy vertebral body expandable stent according to claim 1 is characterized in that: said front end supporting member (2) is the annular slice structure; Said rear end supporting member (3) is the annular slice structure.
3. ti-ni shape memory alloy vertebral body expandable stent according to claim 1 and 2 is characterized in that: be provided with transition bracket (4) between said front end supporting member (2) and crest shape ti-ni shape memory alloy support (11) top; Be provided with transition bracket (4) between said rear end supporting member (3) and trough shape ti-ni shape memory alloy support (12) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201458121U CN202537630U (en) | 2012-04-09 | 2012-04-09 | Nickel-titanium memory alloy vertebral expansion support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201458121U CN202537630U (en) | 2012-04-09 | 2012-04-09 | Nickel-titanium memory alloy vertebral expansion support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202537630U true CN202537630U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201458121U Withdrawn - After Issue CN202537630U (en) | 2012-04-09 | 2012-04-09 | Nickel-titanium memory alloy vertebral expansion support |
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| Country | Link |
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| CN (1) | CN202537630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103356272A (en) * | 2012-04-09 | 2013-10-23 | 陕西福泰医疗科技有限公司 | Nickel-titanium memory alloy vertebral expansion support |
| WO2014114154A1 (en) * | 2013-01-28 | 2014-07-31 | Liu Miaosheng | Self-deformation metal marker |
-
2012
- 2012-04-09 CN CN2012201458121U patent/CN202537630U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103356272A (en) * | 2012-04-09 | 2013-10-23 | 陕西福泰医疗科技有限公司 | Nickel-titanium memory alloy vertebral expansion support |
| CN103356272B (en) * | 2012-04-09 | 2016-03-23 | 陕西福泰医疗科技有限公司 | A kind of Nickel-titanium memory alloy vertebral expansion support |
| WO2014114154A1 (en) * | 2013-01-28 | 2014-07-31 | Liu Miaosheng | Self-deformation metal marker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |