CN2917584Y - Laser etching nickel-titanium alloy self-swelling type jumping-proof supporting stand - Google Patents
Laser etching nickel-titanium alloy self-swelling type jumping-proof supporting stand Download PDFInfo
- Publication number
- CN2917584Y CN2917584Y CNU2004201505344U CN200420150534U CN2917584Y CN 2917584 Y CN2917584 Y CN 2917584Y CN U2004201505344 U CNU2004201505344 U CN U2004201505344U CN 200420150534 U CN200420150534 U CN 200420150534U CN 2917584 Y CN2917584 Y CN 2917584Y
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- crest
- support
- mouth
- self
- bell
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Abstract
The utility model relates to a self-expandable and anti-rebound nickel-titanium frame engraved by laser, which pertains to technical field of medical instrument. The new frame is pipeline structured by many sets of corrugated rings engraved by nickel-titanium tube, and each two corrugated rings forms mirror symmetry. The utility model can be used in canals and cavities such as carotid, biliary tract and esophagus. The frame is self-expandable because of shape memorizing alloy of nickel and titanium, with saves sacculus. Body is column shaped and two ends are bell-mouth shaped, the corrugated rings of the two ends are longer than that of the body. Relative wave crests of unit body are connected by short and straight connecting bars, and connecting bars and the two ends are one to two crest interval from each other. The connecting bars on body are two to four crest intervals from mutually. Shape of the outset wave crest on bell-mouth can be different from that of wave crest on other position, top of the bell-mouth is earbob shaped. One end of the bell-mouth is cat ear or fish mouth shaped.
Description
Technical field
This utility model belongs to technical field of medical instruments, can be used for intraluminal stent endoprosthesis such as carotid artery, biliary tract and esophagus.
Background technology
From the later stage sixties 20th century, metal rack has become medical device important in the interventional therapy, and has obtained using widely in blood vessels such as coronary artery, carotid artery and in the non-blood vessels such as biliary tract, esophagus.After support is implanted, can slow down intraluminal narrowly effectively, recover physiology and flow.At present, timbering material is mainly based on the 316L medical stainless steel, but because the limitation of stainless deformability and elastic range, niti-shaped memorial alloy (general designation Nitinol) has substituted rustless steel step by step, has obtained using widely in large scale tube chambers such as carotid artery, biliary tract and esophagus.Existing nick-eltitanium alloy stent generally adopts the nitinol alloy wire braiding to form, and is subjected to the influence of weaving, and the general wall thickness of the support that is woven into is big, style is fairly simple, deflection is big and stationkeeping ability is poor.The support force of braided support is to guarantee with certain count, and the support force of support and the contradiction of compliance often are difficult to coordinate to solve.And braided support is difficult to be put in the undersized carrier.
Nowadays, abroad begun to adopt the nick-eltitanium alloy stent of laser engraving, because advantages such as its excellent biological compatibility, corrosion resistance, shape memory characteristic and easy conveying obtain application more and more widely.Domestic existing Nitinol engraving support patent has: self expansive stand (98102493.9), human vas and hollow organ tubular bracket (97223628.7) and self-expanding formula carotid artery vascular support (02271095.7).The course of conveying more complicated of " self expansive stand " wherein, and overall performance is relatively poor, and bigger to vascular damaged." human vas and hollow organ tubular bracket " is to adopt the method for NiTi net soil weld to make, and make that the overall performance of support and compliance are relatively poor, and this kind support do not have corresponding antiskid and anti-jump design." self-expanding formula carotid artery vascular support " adopted the configuration design of Palmaz-Schatz coronary stent, and the compliance of support is relatively poor, lacks antiskid and anti-jump design too.Above shortcoming has all limited nick-eltitanium alloy stent in intraluminal application such as carotid artery, biliary tract and esophaguses.
Summary of the invention
The purpose of this utility model just provides a kind of anti-jump support of laser engraving Nitinol self-inflated that has bigger radial support power, increased localized degree of accuracy.
This utility model adopts corrugated design principle and the anti-jump structure of horn mouth, gives full play to the advantage of laser engraving support and nickel-titanium alloy material, makes the support performance reach best.The final supporting structure that obtains can satisfy following requirement: 1. support has the performance of self-expanding; 2. has good radial support power after expanding, preferably compliance and bigger compression factor; 3. be not easy slippage behind the support location; 4. discharge in the support process and do not jump.For this reason, the special technical solution that proposes a kind of laser engraving nick-eltitanium alloy stent.
Basic design of the present utility model is: utilize the super-elasticity of Nitinol, use carrier that support is delivered to diseased region, can expand voluntarily after carrier is released, reach the size of design in advance.The design adopts corrugated ring as the main support muscle, to reach the requirement of support to support performance; Adopt short straight rib at interval, to satisfy the requirement of compliance; Two ends are the requirement of horn mouth to guarantee to have good positioning; One end horn mouth adopts the design of " bimodal " shape, promptly has two relative crests to exceed 0.5-2mm than all the other crests; Perhaps adopt wedge-shaped design, promptly each crest of horn mouth raises successively, and the crest summit is in the axis and is on the inclined-plane of 10-45 degree, like this can be so that each peak of bracket end progressively discharge, thus solved the problem of easily jumping when support discharges.Adopt laser engraving to cooperate the way of subsequent heat treatment to finish the support typing at last.
The laser engraving support that this utility model is designed is axially to be engraved along it by the Nitinol pipe to make a plurality of corrugated cell cube structures 1, links to each other by short straight rib 4,5 between the axially adjacent corrugated ring 2,3.It is characterized in that: two adjacent row's corrugated rings are mirror symmetry, and the corrugated ring 2 of end is bigger slightly than the corrugated ring 3 of body.One to two peak separation in short straight rib 4 every intervals of end connects with the crest of relative body unit body, and two to four peak separations in short straight rib 5 spaces between the body adjacent corrugations ring, between the axially adjacent short straight rib of body in phase difference of half or the half-peak spacing of making progress in week.The length of described support and radius can be controlled by the size that increases or reduce the number of body unit body structure and repair cell cube minutely.The horn mouth of end I is handled by follow-up typing and is obtained, and wherein an end horn mouth is " bimodal " shape structure or is wedge structure, and the end crest adopts two kinds of designs, and a kind of design is identical with the design of body crest; Another design is different with the crest design of body, and its top is " earrings " shape 6.
The beneficial effect that this utility model reached is, adopt corrugated ring as the cell cube structure, this kind cell cube structure has higher compression factor, can put in the littler carrier, and it is even to open the after-poppet bulk deformation, has bigger radial support power.Axially adjacent cell cube links to each other by short straight rib at interval, has guaranteed the globality of support, and body at interval the short straight rib that distributes of two to four peak separations connect and make and the compliance scalable of support make support reach the hard and soft purpose that is harmonious.The horn mouth design at support two ends has guaranteed to be not easy slippage after support is implanted.The end corrugation ring length is bigger, and one to two peak separation at interval only between the short straight rib between end and the body, if can add outermost " earrings " shape crest, these designs have all increased the holding power of end, make that the retention effect of support is better.One end horn mouth adopts the design of " bimodal " shape or adopts the wedge-like design, support is discharged step by step, can suppress less impulse force and jump phenomena can not occur at the process medium-height trestle of each step release and the frictional force of tube wall like this, more increase localized degree of accuracy simultaneously.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is a 3D solid pictorial diagram of the present utility model.
Fig. 2 is the expansion view of body among Fig. 1 of the present utility model.
Fig. 3 is " bimodal " of the present utility model shape horn mouth side view.
Fig. 4 is a wedge-like horn mouth side view of the present utility model.
The specific embodiment
A kind of ductwork type nick-eltitanium alloy stent of laser engraving is the pipe network structure that is formed by the Nitinol thin-wall pipes system of engraving, because the stable super-elasticity of Nitinol, it is to reach the size value of design in advance accurately that support discharges.Described support is axially comprising two end I and a body portion II, and the length of the corrugated ring 2 of end I is longer than the corrugated ring 3 of body II.The end expanded view comprises 6-18 crest, one to two peak separation in interval between per two short straight ribs 4.The expanded view of body comprises the multiple cell cube of many rows, adjacent cell cube is mirror symmetry, and body is two to four peak separations in interval between circumferentially adjacent short straight rib 5, and body has been separated by again half or a half-peak spacing between axially adjacent dowel in a circumferential direction.One end horn mouth is when " bimodal " shape or horn mouth are wedge-like and can guarantee to discharge support jump phenomena can not occur, and can locate more accurately.The outermost crest of support top can be " earrings " shape 6, with the support force of further increase end, improves locating effect, still owing to the limitation of process technology, whether processes this " earrings " shape structure and can be decided by the processing feasibility of various places.This utility model is because said structure makes support have adjustable compliance, can select suitable compliance as required, in input process, be easy to arrive diseased region smoothly by crooked position, and after opening, self-expanding has whole preferably uniformity, bigger radial support power, preferably location and anti-jump ability.
Claims (4)
1. the anti-jump support of laser engraving Nitinol self-inflated is characterized in that, is corrugated along its axial unit body structure (1), link to each other with (5) by short straight rib (4) between axially adjacent corrugated ring (2) and the corrugated ring (3),
A. two row's corrugated rings that body is adjacent are mirror symmetry;
B. the corrugated ring of end (2) is bigger than the corrugated ring (3) of body;
C. the short straight rib of end (a 4) space 1-2 peak separation links to each other with the crest of relative body unit body;
D. 24 peak separations in the short straight rib of body (5) space and next row are mirror symmetry crest and link to each other.
2. the anti-jump support of laser engraving Nitinol self-inflated according to claim 1 is characterized in that the horn mouth of end (I) is bimodal shape, promptly has two relative crests to exceed 0.5-2mm than all the other crests.
3. the anti-jump support of laser engraving Nitinol self-inflated according to claim 1 is characterized in that each crest of horn mouth of end (I) raises successively, and the crest summit is in the axis and is on the inclined-plane of 10-45 degree.
4. the anti-jump support of laser engraving Nitinol self-inflated according to claim 1 is characterized in that this utility model is a tubulose.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNU2004201505344U CN2917584Y (en) | 2004-09-30 | 2004-09-30 | Laser etching nickel-titanium alloy self-swelling type jumping-proof supporting stand |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CNU2004201505344U CN2917584Y (en) | 2004-09-30 | 2004-09-30 | Laser etching nickel-titanium alloy self-swelling type jumping-proof supporting stand |
Publications (1)
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CN2917584Y true CN2917584Y (en) | 2007-07-04 |
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CNU2004201505344U Expired - Fee Related CN2917584Y (en) | 2004-09-30 | 2004-09-30 | Laser etching nickel-titanium alloy self-swelling type jumping-proof supporting stand |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101912323A (en) * | 2010-08-19 | 2010-12-15 | 成正辉 | Brain aneurysm intravascular stent, manufacture thereof and use method thereof |
CN102920539A (en) * | 2012-11-12 | 2013-02-13 | 淮阴工学院 | Intravascular stent in imitating carbon nanotube structure |
CN105726178A (en) * | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105726174A (en) * | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105796220A (en) * | 2016-04-27 | 2016-07-27 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105796219A (en) * | 2016-04-27 | 2016-07-27 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN106176003A (en) * | 2016-07-06 | 2016-12-07 | 苏州天鸿盛捷医疗器械有限公司 | A kind of intravascular stent, its preparation method and application |
US10695201B2 (en) | 2016-04-27 | 2020-06-30 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
US11471309B2 (en) | 2016-04-27 | 2022-10-18 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
-
2004
- 2004-09-30 CN CNU2004201505344U patent/CN2917584Y/en not_active Expired - Fee Related
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101912323A (en) * | 2010-08-19 | 2010-12-15 | 成正辉 | Brain aneurysm intravascular stent, manufacture thereof and use method thereof |
CN102920539A (en) * | 2012-11-12 | 2013-02-13 | 淮阴工学院 | Intravascular stent in imitating carbon nanotube structure |
CN102920539B (en) * | 2012-11-12 | 2015-04-22 | 淮阴工学院 | Intravascular stent in imitating carbon nanotube structure |
CN105796219A (en) * | 2016-04-27 | 2016-07-27 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105726174A (en) * | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105796220A (en) * | 2016-04-27 | 2016-07-27 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105726178A (en) * | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
CN105796219B (en) * | 2016-04-27 | 2017-12-19 | 苏州天鸿盛捷医疗器械有限公司 | A kind of intravascular stent, its preparation method and application |
CN105726178B (en) * | 2016-04-27 | 2017-12-22 | 苏州天鸿盛捷医疗器械有限公司 | A kind of intravascular stent, its preparation method and application |
US10695201B2 (en) | 2016-04-27 | 2020-06-30 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
US11471309B2 (en) | 2016-04-27 | 2022-10-18 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
CN106176003A (en) * | 2016-07-06 | 2016-12-07 | 苏州天鸿盛捷医疗器械有限公司 | A kind of intravascular stent, its preparation method and application |
CN106176003B (en) * | 2016-07-06 | 2018-12-28 | 苏州天鸿盛捷医疗器械有限公司 | A kind of intravascular stent, preparation method and application |
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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: 20070704 Termination date: 20091030 |