CN103356272A - Nickel-titanium memory alloy vertebral expansion support - Google Patents
Nickel-titanium memory alloy vertebral expansion support Download PDFInfo
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- CN103356272A CN103356272A CN2012101012100A CN201210101210A CN103356272A CN 103356272 A CN103356272 A CN 103356272A CN 2012101012100 A CN2012101012100 A CN 2012101012100A CN 201210101210 A CN201210101210 A CN 201210101210A CN 103356272 A CN103356272 A CN 103356272A
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Abstract
The invention relates to a nickel-titanium memory alloy vertebral expansion support which comprises a support body, a front-end support and a rear-end support. The support body is formed in the mode that three or four crest-shaped nickel-titanium memory alloy supports and the same number of trough-shaped nickel-titanium memory alloy supports are sequentially connected in a staggered mode and closed from end to end, the support body is shaped like a thin and straight circular tube at the temperature of 0-5 DEG C, and returns to a 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
The invention belongs to technical field of medical instruments, relate to a kind of vertebral body expandable stent, particularly a kind of vertebral body expandable stent of making of the ti-ni shape memory alloy material.
Background technology
Vertebral body expansion is a kind of operation form of Spinal fractures in clinical, the modus operandi of exercising mainly for osteoporosis, compressibility vertebral fracture.The expansion method of using clinically at present is by Minimally Invasive Surgery, utilizes the External Force Acting of hydraulic pressure sacculus to the extruding of vertebral body spongy bone, forms cavity in vertebral body, and to the physiology height, the hydraulic pressure sacculus makes vertebral body form the bone cement that reinjects behind the cavity with corpus vertebrae replacement.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
The object of the invention provides a kind of ti-ni shape memory alloy vertebral body expandable stent, the technical problem of a series of complication such as the other blood vessel of the catastrophic spinal cord, nerve root and the vertebra that cause because of the heating of bone cement seepage in corpus vertebrae replacement and the clinical operation is burnt, bone cement pulmonary infarction that it has solved.
Technical scheme of the present invention 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, described rack body is cross-linked successively by the trough shape NiTi shape memory alloys bracket 12 of three or four crest shape NiTi shape memory alloys brackets 11 and equal number and the head and the tail closure forms; Described rack body presents thin straight circular tube shaped when temperature is 0-5 ℃, reply the Bombyx bombycis shape for memory when human body temperature; Described front end supports and comprises and be arranged on each crest shape NiTi shape memory alloys bracket 11 top and outward extending ti-ni shape memory alloy front end supporting member 2; Described front end supporting member presents the laminated structure concordant with rack body when temperature is 0-5 ℃, reply the laminated structure to the bending of rack body axis direction for memory when human body temperature; Described rear end is supported and is comprised and be arranged on each trough shape NiTi shape memory alloys bracket 12 top and outward extending ti-ni shape memory alloy rear end supporting member 3; Described rear end supporting member presents the laminated structure concordant with rack body when temperature is 0-5 ℃, reply the laminated structure to the bending of rack body axis direction for memory when human body temperature.
Above-mentioned front end supporting member 2 is the annular slice structure; Described 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 NiTi shape memory alloys bracket 11 tops; Be provided with transition bracket 4 between described rear end supporting member 3 and trough shape NiTi shape memory alloys bracket 12 tops.
Beneficial effect of the present invention is:
1. under controlled temperature conditions, implant in the compressed vertebral by Wicresoft's passage, simple and convenient during implantation.
2. ti-ni shape memory alloy centrum support design science is easily gone, and is simple in structure, easy to operate, safe and reliable, reached the purpose of clinical requirement.
3. ti-ni shape memory alloy vertebral body expandable stent has good biocompatibility, intensity is high, proportion is low, endurance, corrosion-resistant, wear-resistant, nonmagnetic, the advantage such as have no side effect, and can implant for a long time vertebral body.
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 the cavity inner peripheral wall that forms at air bag is evenly distributed forms the integrated support to cavity, compressed vertebral is supported reset.The cavity two ends do not stress, can be to the pedicle of vertebral arch injury.
5. the ti-ni shape memory alloy centrum support is provided with transition bracket, can guarantee rack body seamlessly transitting to supporting member.
6. support and the stressed buffering of ti-ni shape memory alloy vertebral body expandable stent after the elasticity tension that the cavity inner peripheral wall is evenly distributed has guaranteed corpus vertebrae replacement that compression subsides, 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 support of the present invention in the time of 0-5 ℃;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the view of support of the present invention when human body temperature;
Fig. 4 is the top 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 ℃ state;
Fig. 8 is expandable stent state behind the vertebral body intramedullary expansion when human body temperature.
Reference numeral: 11-crest shape NiTi shape memory alloys bracket, 12-trough shape NiTi shape memory alloys bracket, 2-ti-ni shape memory alloy front end supporting member, 3-rear end supporting member, 4-transition bracket.
The specific embodiment
Ti-ni shape memory alloy vertebral body expandable stent of the present invention, comprise that rack body, front end support and the rear end is supported, four crest shapes of rack body NiTi shape memory alloys bracket 11 and four trough shape NiTi shape memory alloys brackets 12 are cross-linked successively and the head and the tail closure forms; Rack body presents thin straight circular tube shaped when temperature is 0-5 ℃, reply the Bombyx bombycis shape for memory when human body temperature; Front end supports and to comprise and be arranged on each crest shape NiTi shape memory alloys bracket 11 top and outward extending ti-ni shape memory alloy front end supporting member 2; The front end supporting member presents the laminated structure concordant with rack body when temperature is 0-5 ℃, reply the laminated structure to the bending of rack body axis direction for memory when human body temperature; The rear end is supported and to be comprised and be arranged on each trough shape NiTi shape memory alloys bracket 12 top and outward extending ti-ni shape memory alloy rear end supporting member 3; The rear end supporting member presents the laminated structure concordant with rack body when temperature is 0-5 ℃, reply the laminated structure to the bending of rack body axis direction for memory when human body temperature.For easy to process, front end supporting member 2 and rear end supporting member 3 preferably adopt the annular slice structure; In case of necessity, can be provided with transition bracket 4 between front end supporting member 2 and crest shape NiTi shape memory alloys bracket 11 tops; Be provided with transition bracket 4 between rear end supporting member 3 and trough shape NiTi shape memory alloys bracket 12 tops.
In the kyphoplasty operation, insert expandable sacculus to anterior vertebral, reset by compression body is carried out in sacculus bath expansion, and make formation cavity in the compression body.Ti-ni shape memory alloy vertebral body expandable stent is manufactured thin straight circular tube shaped into as shown in Figure 1, memory be shaped as shown in Figure 3 Bombyx bombycis shape, under controlled temperature (0-5 ℃) condition, implant in the compression body cavity by Wicresoft's passage, (27-33 ℃) tubular bracket integral body is opened under human body temperature, reply the Bombyx bombycis shape for memory, the elasticity tension that the cavity inner peripheral wall that forms at air bag is evenly distributed, formation is to the integrated support of cavity, the compressed vertebral support is resetted, reach normal physiology height.The cavity two ends that form do not stress, can be to the pedicle of vertebral arch injury.
Support and the stressed buffering of ti-ni shape memory alloy vertebral body expandable stent after the elasticity tension that the cavity inner peripheral wall is evenly distributed has guaranteed to compress the corpus vertebrae replacement that subsides, 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, described rack body is cross-linked successively by the trough shape NiTi shape memory alloys bracket (12) of three or four crest shape NiTi shape memory alloys brackets (11) and equal number and the head and the tail closure forms; Described rack body presents thin straight circular tube shaped when temperature is 0-5 ℃, reply the Bombyx bombycis shape for memory when human body temperature; Described front end supports and comprises and be arranged on each crest shape NiTi shape memory alloys bracket (11) top and outward extending ti-ni shape memory alloy front end supporting member (2); Described front end supporting member presents the laminated structure concordant with rack body when temperature is 0-5 ℃, reply the laminated structure to the bending of rack body axis direction for memory when human body temperature; Described rear end is supported and is comprised and be arranged on each trough shape NiTi shape memory alloys bracket (12) top and outward extending ti-ni shape memory alloy rear end supporting member (3); Described rear end supporting member presents the laminated structure concordant with rack body when temperature is 0-5 ℃, reply the laminated structure to the bending of rack body axis direction for memory when human body temperature.
2. ti-ni shape memory alloy vertebral body expandable stent according to claim 1 is characterized in that: described front end supporting member (2) is the annular slice structure; Described 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 described front end supporting member (2) and crest shape NiTi shape memory alloys bracket (11) top; Be provided with transition bracket (4) between described rear end supporting member (3) and trough shape NiTi shape memory alloys bracket (12) top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210101210.0A CN103356272B (en) | 2012-04-09 | 2012-04-09 | A kind of Nickel-titanium memory alloy vertebral expansion support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210101210.0A CN103356272B (en) | 2012-04-09 | 2012-04-09 | A kind of Nickel-titanium memory alloy vertebral expansion support |
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| CN103356272A true CN103356272A (en) | 2013-10-23 |
| CN103356272B CN103356272B (en) | 2016-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109512546A (en) * | 2018-09-29 | 2019-03-26 | 北京航空航天大学 | Overlay film frame and preparation method thereof |
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| US20040010315A1 (en) * | 2002-03-29 | 2004-01-15 | Song John K. | Self-expanding intervertebral device |
| CN2699845Y (en) * | 2004-03-24 | 2005-05-18 | 沈建雄 | Memory alloy vertebrae strutting device |
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| US20070088436A1 (en) * | 2005-09-29 | 2007-04-19 | Matthew Parsons | Methods and devices for stenting or tamping a fractured vertebral body |
| CN201070385Y (en) * | 2007-02-15 | 2008-06-11 | 刘小勇 | Expansible resetting bracket implanted in vertebral column pathological corpus vertebrae |
| CN201147363Y (en) * | 2007-07-06 | 2008-11-12 | 刘小勇 | Corpus vertebrae expansible orthopedic positor |
| CN201551419U (en) * | 2009-11-19 | 2010-08-18 | 甘肃国脉生物科技有限责任公司 | Memory alloy vertebral body bracket |
| CN202537630U (en) * | 2012-04-09 | 2012-11-21 | 陕西福泰医疗科技有限公司 | Nickel-titanium memory alloy vertebral expansion support |
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2012
- 2012-04-09 CN CN201210101210.0A patent/CN103356272B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030074075A1 (en) * | 2001-08-27 | 2003-04-17 | Thomas James C. | Expandable implant for partial disc replacement and reinforcement of a disc partially removed in a discectomy and for reduction and maintenance of alignment of cancellous bone fractures and methods and apparatuses for same |
| US20040010315A1 (en) * | 2002-03-29 | 2004-01-15 | Song John K. | Self-expanding intervertebral device |
| CN2699845Y (en) * | 2004-03-24 | 2005-05-18 | 沈建雄 | Memory alloy vertebrae strutting device |
| CN2708927Y (en) * | 2004-04-28 | 2005-07-13 | 微创医疗器械(上海)有限公司 | Self-expanding type blood vessel dilator |
| US20070088436A1 (en) * | 2005-09-29 | 2007-04-19 | Matthew Parsons | Methods and devices for stenting or tamping a fractured vertebral body |
| CN201070385Y (en) * | 2007-02-15 | 2008-06-11 | 刘小勇 | Expansible resetting bracket implanted in vertebral column pathological corpus vertebrae |
| CN201147363Y (en) * | 2007-07-06 | 2008-11-12 | 刘小勇 | Corpus vertebrae expansible orthopedic positor |
| CN201551419U (en) * | 2009-11-19 | 2010-08-18 | 甘肃国脉生物科技有限责任公司 | Memory alloy vertebral body bracket |
| CN202537630U (en) * | 2012-04-09 | 2012-11-21 | 陕西福泰医疗科技有限公司 | Nickel-titanium memory alloy vertebral expansion support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109512546A (en) * | 2018-09-29 | 2019-03-26 | 北京航空航天大学 | Overlay film frame and preparation method thereof |
| CN109512546B (en) * | 2018-09-29 | 2021-05-04 | 北京航空航天大学 | Covered stent and manufacturing method thereof |
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| CN103356272B (en) | 2016-03-23 |
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