CN102113926B - Medical guide wire - Google Patents
Medical guide wire Download PDFInfo
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- CN102113926B CN102113926B CN2009102480676A CN200910248067A CN102113926B CN 102113926 B CN102113926 B CN 102113926B CN 2009102480676 A CN2009102480676 A CN 2009102480676A CN 200910248067 A CN200910248067 A CN 200910248067A CN 102113926 B CN102113926 B CN 102113926B
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Abstract
The invention discloses a medical guide wire comprising a metal core, one or more of conveying locating elements and a boss, wherein the metal core is divided into three sections of a tail section part, a middle section part and a front section part, and three sections are successively in linear structure, echelonment structure and the linear structure; the conveying locating elements are fixed on the middle section part of the metal core for providing thrust or recovery force for a self-expandable bracket during transmission; and the boss is fixed on the middle section part of the metal core behind the conveying locating elements for providing thrust for the self-expandable bracket during transmission. In the medical guide wire disclosed by the invention, the metal core is provided with the plurality of conveying locating elements; and the conveying locating elements are rubbed or embedded into the wave rod gap of the self-expandable bracket to provide enough thrust or recovery force by sections, thereby solving the problem that the self-expandable bracket is damaged or deformed when the existing conveying guide wire is used for conveying high-density and super soft self-expandable bracket, and solving the problem that the self-expandable bracket can not be recovered and positioned again during conveying.
Description
Technical field
The application relates to medical Instrument field, particularly relates to a kind of medical guiding wire.
Background technology
Along with continuous exploration and the pursuit of people to minimally-invasive treatment, increasing self-expandable stent and delivery system are applied to the lesions treatment in the various body lumens, such as bile duct, esophagus, neural blood vessel etc.In operation, the conveying of self-expandable stent generally adopts delivery guidewire to finish at present.
On the existing delivery guidewire metal ring plate is installed, self-expandable stent is strapped on the delivery guidewire, when operation, the metal ring plate promotes the self-expandable stent of constraint along with delivery guidewire enters in the body lumen, discharge self-expandable stent, make it be close to the body lumen inwall, shift out delivery guidewire, finish course of conveying.
The applicant finds that existing delivery guidewire states in the process in realization, can only carry hardness larger, the self-expandable stent that ripple bar density is less.For high density, super soft self-expandable stent, adopt existing delivery guidewire, because transporting resistance is excessive, when carrying, can cause self-expandable stent to damage or distortion, make the self-expandable stent of implantation can't be close to the lumen wall of human body.And existing delivery guidewire can only realize self-expandable stent is pushed release when carrying, and can not realize self-expandable stent reclaimed and reorientate.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the present application provides a kind of medical guiding wire, and to realize complete conveying high density, super soft self-expandable stent, technical scheme is as follows:
A kind of medical guiding wire for delivery of self-expandable stent, comprising: metal-cored, one or more conveying keepers and boss, wherein:
Described metal-cored three joints that are divided into: prosthomere part, middle joint part and minor details part, structure is respectively linearity structure, step structure and linearity structure, is used for supporting described self-expandable stent;
Described conveying keeper is fixed on the described metal-cored middle joint part, for delivery of the time thrust or recovery power are provided for described self-expandable stent.
Described boss is fixed on the described metal-cored middle joint part after the described conveying keeper, for delivery of the time provide thrust to described self-expandable stent.
Preferably, described metal-cored the grinding by a kind of material made or formed by the bi-material bonding.
Preferably, the diameter of described prosthomere part is less than the diameter of minor details, and described step structure is the structure that reduces gradually to the prosthomere section diameter from the minor details part.
Preferably, described step structure is comprised of the cylinder that one or more diameters reduce gradually.
Preferably, the described metal-cored middle cylinder that is partly reduced gradually by 3 diameters that saves forms.
Preferably, described cylindrical length is in 400～550mm scope.
Preferably, described a plurality of conveying keeper is fixed on described middle joint part evenly and at intervals.
Preferably, described conveying keeper is middle porose circle, ellipse, regular polygon or irregular polygon, and the outside has a plurality of corner angle.
Preferably, described a plurality of corner angle evenly or unevenly are distributed in the described conveying keeper outside.
Preferably, described a plurality of corner angle are 3～8 corner angle.
Preferably, described conveying keeper is by welding or be bonded on the described middle joint part.
Preferably, described boss is middle porose circle, ellipse, regular polygon or irregular polygon.
Preferably, the external diameter of described boss is greater than the external diameter of described conveying keeper.
Preferably, the self-expandable stent of described conveying is the body lumen self-expandable stent.
Preferably, the length of described metal-cored prosthomere part is in 10～30mm scope, and the length of described metal-cored minor details part is in 1500～2000mm scope.
Preferably, the diameter of described metal-cored prosthomere part is in 0.002～0.012 inch scope, and the diameter of described metal-cored minor details part is in 0.012～0.020 inch scope.
Preferably, the external diameter of described conveying keeper is in 0.01～0.03 inch scope.
Preferably, the corner angle length of described conveying keeper is in 0.002～0.006 inch scope, and thickness is in 0.001～0.004 inch scope.
Preferably, described body lumen self-expandable stent is the intracranial vessel self-expandable stent.
Preferably, the length of described metal-cored minor details part is in 1800～2000mm scope.
Preferably, the diameter of described metal-cored prosthomere part is in 0.002～0.005 inch scope, and the diameter of described metal-cored minor details part is in 0.016～0.020 inch scope.
Preferably, the external diameter of described conveying keeper is in 0.018～0.025 inch scope.
Preferably, the corner angle length of described conveying keeper is in 0.002～0.004 inch scope, and thickness is in 0.001～0.003 inch scope.
Preferably, the material of described metal-cored, described boss and described conveying keeper is developing material not.
Preferably, the not developing material of described metal-cored employing is rustless steel, NiTi class alloy, copper class alloy or aluminum class alloy.
Preferably, the not developing material of described conveying keeper and described boss is rustless steel, NiTi class alloy, copper class alloy, aluminum class alloy or nonvisualized high molecular polymer.
Preferably, this medical guiding wire further comprises:
The first spring is wrapped in described metal-cored prosthomere part;
The second spring is wrapped in described metal-cored middle joint part.
Preferably, described conveying keeper and described boss are fixed on described the second spring.
Preferably, the diameter of described the first spring is in 0.0014～0.0018 inch scope.
Preferably, the diameter of described the second spring is in 0.0018～0.0025 inch scope.
Preferably, the material of described the first spring and the second spring is developing material not.
Preferably, the not developing material of described the first spring and the second spring is rustless steel, NiTi class alloy, copper class alloy or aluminum class alloy.
Preferably, the material of described conveying keeper, described boss and the first spring can also be developing material.
Preferably, the developing material of described conveying keeper and described boss is smooth, platinum, gold or tungsten.
Preferably, the developing material of described the first spring is the high molecular polymer of smooth, platinum, gold, tungsten or development.
The technical scheme that the embodiment of the present application provides, be provided with a plurality of conveying keepers metal-cored, can or embed in the ripple bar space of self-expandable stent by friction, merogenesis provides enough thrust and recovery power, makes self-expandable stent be released to intactly, exactly the body lumen lesion.The larger self-expandable stent of hardness can accurately be carried and locate to the application's medical guiding wire not only, can also accurately carry and locate high density, super soft self-expandable stent.Solved existing delivery guidewire when carrying high density, super soft self-expandable stent, the problem that can cause self-expandable stent to damage or be out of shape, also solved existing delivery guidewire when carrying, can only realize self-expandable stent is pushed release, can not realize self-expandable stent is reclaimed the problem of reorientating.
In addition, the conveying keeper of the embodiment of the present application medical guiding wire, boss and the first spring adopt the design of developing material, when carrying, use the X-ray irradiation, the doctor can also be according to the developing location of medical guiding wire under the X-ray irradiation like this, self-expandable stent is adjusted and located, make self-expandable stent can be released to more accurately the body lumen lesion.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application, the below will do to introduce simply to the accompanying drawing of the required use of embodiment, apparently, the accompanying drawing that the following describes only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of medical guiding wire that Fig. 1 provides for the embodiment of the present application one;
Fig. 2 is the metal-cored structural representation of the embodiment of the present application;
The longitudinal sectional drawing of the conveying keeper that Fig. 3 provides for the embodiment of the present application;
The longitudinal sectional drawing of the boss that Fig. 4 provides for the embodiment of the present application;
The structural representation of a kind of medical guiding wire that Fig. 5 provides for the embodiment of the present application two;
The structural representation of a kind of medical guiding wire that Fig. 6 provides for the embodiment of the present application three.
The specific embodiment
In order to make those skilled in the art person understand better technical scheme among the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
Embodiment one:
The structural representation of a kind of medical guiding wire that Fig. 1 provides for the embodiment of the present application one.
As shown in the figure, this medical guiding wire comprises: metal-cored 1, boss 2 and carry keeper 3 is for delivery of the self-expandable stent (not shown).Metal-cored 1 is divided into three parts: prosthomere part 4, middle joint part 5 and minor details part 6, be 7 in the position of middle joint part 5 when self-expandable stent is carried, the front end of position 7 is near prosthomere part 4, a plurality of conveying keepers 3 weld evenly and at intervals or bond in save on the position 7 partly for delivery of the time provide thrust or recovery power to self-expandable stent.2 ends that weld or be bonded in position 7 of boss, for delivery of the time thrust is provided for described self-expandable stent.
The metal-cored structural representation that Fig. 2 provides for the embodiment of the present application.As shown in the figure, metal-cored 1 prosthomere part 4 and the structure of minor details part 6 are the linearity structure, and the diameter of prosthomere part is less than the diameter of minor details part.The structure of middle joint part 5 is step structure, be tapered to prosthomere part 4 diameters from minor details part 6, this tapered process, can realize that by three tapered step structures 8 three step structures 8 are so that the diameter of the diameter of middle joint part from minor details Diameter Gradual Change partly to the prosthomere part.In addition, it will be recognized by those skilled in the art that middle joint part 5 adopts 3 step structures 8 to realize tapered process, only is a kind of specific embodiment of the application, should not consist of the restriction to the application.
Metal-cored 1 material can be selected one or both in the materials such as rustless steel, NiTi class alloy, copper class alloy and aluminum class alloy, and these materials do not develop under the X-ray irradiation.Metal-cored 1 can whole selects a kind of material, by grinding, produces structure as shown in Figure 2; If select bi-material to make, minor details part 6 is stainless steel material usually, and prosthomere part 4 and middle joint part 5 are nickel-titanium alloy material, and the mode of two sections materials by welding or bonding combined.In embodiments of the present invention, metal-cored 1 is made of a kind of material, and the material of selecting is nickel-titanium alloy material.
Metal-cored 1 each several part structure can make metal-cored 1 to obtain different stiffness variation, and the speed of stiffness variation and the size of stiffness variation carry the soft degree of self-expandable stent and the tortuous degree of body lumen to determine by needs.Carry as required the tortuous degree of body lumen, the diameter of metal-cored 1 prosthomere part 4 is in 0.002～0.012 inch scope, the diameter of minor details part 6 is in 0.012～0.020 inch scope, and the diameter of the diameter minor details part 6 of middle joint part 5 is reduced to the diameter of prosthomere part 4 gradually.Carry as required the length of body lumen, the length of metal-cored 1 prosthomere part 4 can be in 10～30mm scope, the length of each step structure 8 can be in 400～550mm scope in the middle joint part 5, and the length of minor details part 6 can be in 1500～2000mm scope.
When medical guiding wire during for delivery of the intracranial vessel self-expandable stent, the diameter of metal-cored 1 prosthomere part 4 is in 0.002～0.005 inch scope, the diameter of minor details part 6 is in 0.016～0.020 inch scope, and the length of minor details part 6 can be in 1800～2000mm scope.In the embodiment of the present application, the diameter of metal-cored 1 prosthomere part 4 is selected 0.003 inch, and length is selected 15mm; The length of each step structure 8 of middle joint part 5 is selected 450mm; The diameter of minor details part 6 is selected 0.019 inch, and length is selected 1980mm, and the doctor can deliver into intracranial vessel with self-expandable stent better when performing the operation like this.
Carrying keeper 3 is middle porose circle, ellipse, regular polygon or irregular polygon, there are a plurality of corner angle in the outside, effect is to drive self-expandable stent to move with support and discharge the location when inaccurate when carrying, readjust the support location, the number of its distribution can be that the length of position 7 is determined according to the length of self-expandable stent, is generally 1～8.The number of carrying in the embodiment of the present application keeper is 3, and its material can be selected the not developing material such as rustless steel, NiTi class alloy, copper class alloy, aluminum class alloy or nonvisualized high molecular polymer.A plurality of corner angle can be evenly or are distributed in unevenly the outside of carrying keeper 3.
The longitudinal sectional drawing of the conveying keeper that Fig. 3 provides for the embodiment of the present application, as shown in the figure, it is circular carrying keeper 3, have 4 corner angle, the length of corner angle is in 0.002～0.006 inch scope, the thickness of corner angle is 0.001～0.004 inch, and the outside polishing of corner angle is mellow and full, does not have right-angled edge and burr.Carry the external diameter of keeper 3 in 0.01～0.03 inch scope, the large I of internal diameter is selected according to the metal-cored diameter in place.
When medical guiding wire for delivery of the intracranial vessel self-expandable stent, carry the length of keeper 3 corner angle in 0.002～0.004 inch scope, the thickness of corner angle is 0.001～0.003 inch, carries the external diameter of keeper 3 in 0.018～0.025 inch scope.In the embodiment of the present application, according to the size of conveying intracranial vessel self-expandable stent ripple bar, carry the corner angle length of keeper 3 to select 0.003 inch, the thickness of corner angle is selected 0.002 inch, and external diameter is selected 0.020 inch.
Before carrying self-expandable stent, self-expandable stent is strapped on metal-cored 1, when operation, the corner angle of carrying keeper 7 are by friction or embed in the ripple bar space of self-expandable stent, and the self-expandable stent that drives constraint advances in body lumen or retreats.
The embodiment of the present application, be provided with a plurality of conveying keepers metal-cored, can or embed in the ripple bar space of self-expandable stent by friction, merogenesis provides enough thrust or recovery power, makes self-expandable stent be released to intactly, exactly the body lumen lesion.The larger self-expandable stent of hardness can accurately be carried and locate to the application's medical guiding wire not only, can also accurately carry and locate high density, super soft self-expandable stent.Solved existing delivery guidewire when carrying high density, super soft self-expandable stent, the problem that can cause self-expandable stent to damage or be out of shape, also solved existing delivery guidewire when carrying, can only realize self-expandable stent is pushed release, can not realize self-expandable stent is reclaimed the problem of reorientating.
Embodiment two:
A kind of medical guiding wire structural representation that Fig. 5 provides for the embodiment of the invention two, as shown in the figure, this medical guiding wire also comprises: the first spring 9 and the second spring 10, wherein: the first spring 9 is wrapped on metal-cored 1 the prosthomere part 4; The second spring 10 is wrapped on metal-cored 1 the middle joint part 5.The effect of the first spring 9 and the second spring 10 is: on the one hand: prevent metal-cored at operation process when the tortuous vascular lesion, too crooked and fracture; On the other hand: in course of conveying, prevent that metal-cored 1 punctures the body lumen inwall, guarantee operation safety.Because the rigidity of prosthomere part 4 and middle joint part 5 is different, so the diameter of the first spring 9 is less than the diameter of the second spring 10, before and after guaranteeing that spring twines, the stiffness differences of prosthomere part 4 and middle joint part 5.The diameter of the first spring 9 is in 0.0014～0.0018 inch scope, and the diameter of the second spring 10 is in 0.0018～0.0025 inch scope.The diameter of the first spring 9 is selected 0.0015 inch in embodiments of the present invention, and the diameter of the second spring 10 is selected 0.0020 inch.The material of the first spring 9 and the second spring 10 can be selected the not developing material such as rustless steel, NiTi class alloy, copper class alloy, aluminum class alloy.
In embodiment two, 3 can also weld or be bonded on the second spring between boss 2 and conveying location.
Embodiment three:
The structural representation of a kind of medical guiding wire that Fig. 6 provides for the embodiment of the invention three, as shown in the figure, the material that the conveying keeper 3 of this medical guiding wire and the material of boss 2 can also be selected is smooth, platinum, gold, tungsten or development high molecular polymer etc. develop under the X-ray irradiation, the developing materials such as that the material of the first spring 9 can also be selected is smooth, platinum, gold or tungsten.Adopt the design of above-mentioned developing material, when carrying self-expandable stent, the irradiation of use X-ray, the doctor can be according to the position of developing material, just be easy to distinguish the position of self-expandable stent, when the self-expandable stent position is undesirable, medical guiding wire adjusted accordingly, can reorientate self-expandable stent, so that the self-expandable stent after discharging can be fitted in the body lumen lesion more accurately.
The conveying keeper of the embodiment of the present application medical guiding wire, boss and the first spring adopt the design of developing material, when carrying, use the X-ray irradiation, the doctor can also be according to the developing location of medical guiding wire under the X-ray irradiation like this, self-expandable stent is adjusted and located, make self-expandable stent can be released to more accurately the body lumen lesion.
Each embodiment in this description all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses is difference with other embodiment.The above only is the application's the specific embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.
Claims (33)
1. a medical guiding wire for delivery of self-expandable stent, is characterized in that, comprising: metal-cored, boss and one or more conveying keeper, wherein:
Described metal-cored three joints that are divided into: prosthomere part, middle joint part and minor details part, structure is respectively linearity structure, step structure and linearity structure, be used for supporting described self-expandable stent, and the diameter of described prosthomere part is less than the diameter of minor details part, and described step structure is the structure that reduces gradually to the prosthomere section diameter from the minor details part;
Described conveying keeper is fixed on the described metal-cored middle joint part, for delivery of the time thrust or recovery power are provided for described self-expandable stent;
Described boss is fixed on the described metal-cored middle joint part after the described conveying keeper, for delivery of the time provide thrust to described self-expandable stent, the external diameter of described boss is greater than the external diameter of described conveying keeper.
2. medical guiding wire according to claim 1 is characterized in that, described metal-cored the grinding by a kind of material made or formed by bi-material welding or bonding.
3. medical guiding wire according to claim 1 is characterized in that, described step structure is comprised of the cylinder that one or more diameters reduce gradually.
4. medical guiding wire according to claim 1 is characterized in that, the cylinder that described metal-cored middle joint part is reduced gradually by 3 diameters forms.
5. medical guiding wire according to claim 4 is characterized in that, described cylindrical length is in 400 ~ 550mm scope.
6. medical guiding wire according to claim 1 is characterized in that, described a plurality of conveying keepers are fixed on described middle joint part evenly and at intervals.
7. medical guiding wire according to claim 1 is characterized in that, described conveying keeper is middle porose circle, ellipse, regular polygon or irregular polygon, and the outside has a plurality of corner angle.
8. medical guiding wire according to claim 7 is characterized in that, described a plurality of corner angle evenly or unevenly are distributed in the described conveying keeper outside.
9. medical guiding wire according to claim 7 is characterized in that, described a plurality of corner angle are 3 ~ 8 corner angle.
10. medical guiding wire according to claim 7 is characterized in that, described conveying keeper is by welding or be bonded on the described middle joint part.
11. medical guiding wire according to claim 1 is characterized in that, described boss is middle porose circle, ellipse, regular polygon or irregular polygon.
12. medical guiding wire according to claim 1 is characterized in that, the self-expandable stent of described conveying is the body lumen self-expandable stent.
13. medical guiding wire according to claim 12 is characterized in that, the length of described metal-cored prosthomere part is in 10 ~ 30mm scope, and the length of described metal-cored minor details part is in 1500 ~ 2000mm scope.
14. medical guiding wire according to claim 12 is characterized in that, the diameter of described metal-cored prosthomere part is in 0.002 ~ 0.012 inch scope, and the diameter of described metal-cored minor details part is in 0.012 ~ 0.020 inch scope.
15. medical guiding wire according to claim 12 is characterized in that, the external diameter of described conveying keeper is in 0.01 ~ 0.03 inch scope.
16. medical guiding wire according to claim 12 is characterized in that, the corner angle length of described conveying keeper is in 0.002 ~ 0.006 inch scope, and thickness is in 0.001 ~ 0.004 inch scope.
17. medical guiding wire according to claim 12 is characterized in that, described body lumen self-expandable stent is the intracranial vessel self-expandable stent.
18. medical guiding wire according to claim 17 is characterized in that, the length of described metal-cored minor details part is in 1800 ~ 2000mm scope.
19. medical guiding wire according to claim 17 is characterized in that, the diameter of described metal-cored prosthomere part is in 0.002 ~ 0.005 inch scope, and the diameter of described metal-cored minor details part is in 0.016 ~ 0.020 inch scope.
20. medical guiding wire according to claim 17 is characterized in that, the external diameter of described conveying keeper is in 0.018 ~ 0.025 inch scope.
21. medical guiding wire according to claim 17 is characterized in that, the corner angle length of described conveying keeper is in 0.002 ~ 0.004 inch scope, and thickness is in 0.001 ~ 0.003 inch scope.
22. medical guiding wire according to claim 1 is characterized in that, the material of described metal-cored, described boss and described conveying keeper is developing material not.
23. medical guiding wire according to claim 22 is characterized in that, the not developing material of described metal-cored employing is rustless steel, NiTi class alloy, copper class alloy or aluminum class alloy.
24. medical guiding wire according to claim 22 is characterized in that, the not developing material of described conveying keeper and described boss is rustless steel, NiTi class alloy, copper class alloy, aluminum class alloy or nonvisualized high molecular polymer.
25. medical guiding wire according to claim 1 is characterized in that, further comprises:
The first spring is wrapped in described metal-cored prosthomere part;
The second spring is wrapped in described metal-cored middle joint part.
26. medical guiding wire according to claim 25 is characterized in that, described conveying keeper and described boss are fixed on described the second spring.
27. medical guiding wire according to claim 25 is characterized in that, the diameter of described the first spring is in 0.0014 ~ 0.0018 inch scope.
28. medical guiding wire according to claim 25 is characterized in that, the diameter of described the second spring is in 0.0018 ~ 0.0025 inch scope.
29. medical guiding wire according to claim 25 is characterized in that, the material of described the first spring and the second spring is developing material not.
30. medical guiding wire according to claim 25 is characterized in that, the not developing material of described the first spring and the second spring is rustless steel, NiTi class alloy, copper class alloy or aluminum class alloy.
31. medical guiding wire according to claim 25 is characterized in that, the material of described conveying keeper, described boss and the first spring can also be developing material.
32. medical guiding wire according to claim 31 is characterized in that, the developing material of described conveying keeper and described boss is smooth, platinum, gold or tungsten.
33. medical guiding wire according to claim 31 is characterized in that, the developing material of described the first spring is the high molecular polymer of smooth, platinum, gold, tungsten or development.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102480676A CN102113926B (en) | 2009-12-30 | 2009-12-30 | Medical guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102480676A CN102113926B (en) | 2009-12-30 | 2009-12-30 | Medical guide wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102113926A CN102113926A (en) | 2011-07-06 |
| CN102113926B true CN102113926B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102480676A Active CN102113926B (en) | 2009-12-30 | 2009-12-30 | Medical guide wire |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110192940A (en) * | 2019-06-14 | 2019-09-03 | 苏州晶俊新材料科技有限公司 | A kind of degradable fallopian tube stent |
| EP4129244A1 (en) * | 2020-03-26 | 2023-02-08 | Shenzhen Lifetech Endovascular Medical Co., Ltd. | Stent conveyor and stent conveying system |
| CN113440323B (en) * | 2020-03-26 | 2023-05-02 | 先健科技(深圳)有限公司 | Bracket assembly system and bracket assembly method |
| CN113712712B (en) * | 2021-07-31 | 2023-05-05 | 上海心玮医疗科技股份有限公司 | Intracranial aneurysm embolism auxiliary stand and conveying system |
| CN115500992A (en) * | 2022-07-26 | 2022-12-23 | 柏为（武汉）医疗科技股份有限公司 | Ear-nose cavity inner support, support pushing device and support expanding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345945A (en) * | 1990-08-29 | 1994-09-13 | Baxter International Inc. | Dual coil guidewire with radiopaque distal tip |
| CN1897892A (en) * | 2003-11-20 | 2007-01-17 | 先进心血管系统公司 | Rapid-exchange delivery systems for self-expanding stents |
| CN1939551A (en) * | 2005-09-28 | 2007-04-04 | 朝日印帝克股份有限公司 | Medical leading wire and manufacture thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998018516A1 (en) * | 1996-10-30 | 1998-05-07 | C.R. Bard, Inc. | Vascular guidewire with axisymmetric steering and spring forming elements |
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- 2009-12-30 CN CN2009102480676A patent/CN102113926B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345945A (en) * | 1990-08-29 | 1994-09-13 | Baxter International Inc. | Dual coil guidewire with radiopaque distal tip |
| CN1897892A (en) * | 2003-11-20 | 2007-01-17 | 先进心血管系统公司 | Rapid-exchange delivery systems for self-expanding stents |
| CN1939551A (en) * | 2005-09-28 | 2007-04-04 | 朝日印帝克股份有限公司 | Medical leading wire and manufacture thereof |
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| Publication number | Publication date |
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| CN102113926A (en) | 2011-07-06 |
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