CN201008590Y - Blood vessel bracket with super elastic force - Google Patents
Blood vessel bracket with super elastic force Download PDFInfo
- Publication number
- CN201008590Y CN201008590Y CNU2006201501840U CN200620150184U CN201008590Y CN 201008590 Y CN201008590 Y CN 201008590Y CN U2006201501840 U CNU2006201501840 U CN U2006201501840U CN 200620150184 U CN200620150184 U CN 200620150184U CN 201008590 Y CN201008590 Y CN 201008590Y
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- super elastic
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- intravascular stent
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Abstract
The utility model relates to the field of medical instrument, in particular relates to an intravascular stent with a super elastic structure. The utility model is a net tubular structure, which comprises a plurality of even forward spinning wavy supporting structure rods. The intravascular stent has better radical supporting strength and axial flexibility under different vascular partial constraint states, and is coupled on a conveyor. After the focus is inflated and expanded, the utility model can maintain a better and ideal combination point of the fixing force and the flexibility, and can facilitate the entering into the roundabout vascular. The utility model can be used to cure the illness of vascular stenosis or blockage. The total length of the stent is 8-40 mm, the outside diameter is 1.0-4mm, the wall thickness is 0.05-0.12 mm, and the bridge width of the axial connector is smaller or equal to the bridge width of the radial ring unit body. The utility model has the advantages that the curvature degree of the long axis is large, the radial supporting force is strong and the compliance of the vascular is good; the occupied area ratio of the metal space is small, the structure is simple and practical, and the stent is easy to be produced and processed.
Description
Technical field
This utility model relates to a kind of be applied to human vas expansion, the localized super elastic force supporting structure design of shaping, belongs to the interventional medical instrument field.
Background technology
Interventional medicine is called as the tertiary medicine after surgery and medicine, and it has started a kind of brand-new therapeutic treatment method, and is quite promising.
The effect of endovascular stent comprises the elastical retraction that reduces postangioplasty, and the sealing blood vessels inner membrance is torn sheet, and the incidence rate of acute obturation when reducing intervene operation reduces the incidence rate of postoperative restenosis etc.Ideal support should have the observability under the X line, flexibility, features such as stability and stationarity.Yet various supports in the market can not realize that still the axial pliability and the radial support power of perfect unity, particularly support of every technical specification is relatively poor, and the adherent property of blood vessel is not good, are not suitable for bending, become the bigger blood vessel in angle.
Interventional therapy is compared with traditional Therapeutic Method, has advantages such as easy and simple to handle, that wound is little, operation process is short, recovery is fast, curative effect is best, complication is minimum, medical expense is less.Adopt interventional therapy and in blood vessel, place carried stent (DES), because active medicine can suppress the restenosis of postoperative blood vessel, not only improved the postoperative curative effect, but also avoided because the risk of the second operation that vascular restenosis may bring has improved patient's quality of life greatly.
Finish implementation process of the present utility model, the main utensil that is adopted comprises guiding catheter, and foley's tube length overall 120～135cm, conduit external diameter are about 1.0mm, and its front end is coniform, and diameter is 0.8mm, so that the narrow by blood vessel.Has sacculus apart from front end 5mm place, external diameter was not about 1.0mm when sacculus expanded, long 10～the 40mm of sacculus does not wait, make by the high strength polyethylene compounds, can stand 10～20 expansible abilities of atmospheric pressure, the cavity of sacculus communicates with the duct portion exocoel, is used for full contrast agent, externally pressurization acting.The radiography sign that centre or end positions in sacculus inside is provided with X-ray opaque plays the role of positioning during radiography.Connect before and after the whole inner chamber of foley's tube, be used for gaging pressure, walk guide wire, inject contrast agent etc.
Existing stent types is numerous, narrow blood vessel is implemented sacculus expand art, simultaneously support is implanted in the blood vessel, expands and supports narrow blood vessel, to guarantee blood supply.One can implement the early treatment after diagnosing, has greatly improved the damage that causes because of narrow.Present most heart fingernail manufacturer develops the arteria coronaria bare bracket of different materials respectively, and for example, rustless steel, NiTi, cobalt are pressed against alloy and proof gold support etc.All based on biocompatibility metal, according to the difference of support material, respectively there is its advantage aspects such as X-ray development effect and supporting structure.Its radial support dynamics difference of the support of different structure, the support that support force is weak, postoperative have the blood vessel elasticity rebound phenomenon to take place; Axial bending is lower when when support force is excessive the support conveying taking place easily, should not be by crooked blood vessel; Compliance is poor in the support blood vessel; When the metal area coverage is big, also increased coagulation factor.The purpose of this utility model provides a kind of intravascular stent with super elastic structure, reaches on the basis of the big support force of support, increases the compliance of support.On the basis of inheriting above-mentioned support advantage, overcome existing supporting structure and have the support force deficiency, support covers the excessive and flexible problem of shortage of area of organizing.
Summary of the invention
A kind of intravascular stent with super elastic structure is webmaster shape structure, comprises the wavy supporting construction bar composition of a plurality of even dextrorotations, and dextrorotation ripple radian wherein is the standard circular arc, to improve its radial support dynamics.The number of its sine wave period is an even number, and every interval is a pair of or several to relative crest, have one radially the sinusoidal wave form pitman shaft to running through support.
Its webmaster shape architectural feature is, by a plurality of uniformly axially and radially the wavy support bar of dextrorotation form, the quantity of its axial support bar can greater than, be less than or equal to the quantity of radial strut, its quantitative proportion is 1: 10 to 10: 1.Each parameter is by the thickness of blood vessel, position and decide.For thick blood vessel, the optional bigger numerical value of the number of sine wave period, the original outer diameter of support adopts the upper limit, for thin blood vessel, in the sinusoidal wave form annulus cell cube structure, the number of its sine wave period can be selected less numerical value for use, original outer diameter then adopts lower limit, can be prepared into series of products.
The wavy support bar of its dextrorotation is characterised in that, the axial wide circular radial ring element body muscle width that is less than or equal to of connector muscle, and its quantitative proportion is 1: 1-1: 3.By adjusting axial connector muscle width, change the rigidity of support.When requiring rigidity big,, can increase the wall thickness of support, increase the width of all muscle as under the angiosteosis serious situation.Otherwise, under the situation of buckling of vessel or comparison bending, when requiring the support pliability better, then reduce the wall thickness of support, reduce the width of all muscle.The amount of rigidity of support for a change, this Several Parameters can be united use, also can use separately.Axially the connector muscle is wide in addition not only can equal, but also can so both guarantee radial support intensity less than circular radial ring element body muscle width, again can be by wide the narrowing down of axial connector muscle, enough major axis abilities are provided, finally make support reach hard and soft bonded optimum efficiency.
A kind of intravascular stent with super elastic structure according to claim 1, its length overall is 8～40mm, external diameter 1.0～4mm, wall thickness 0.05～0.12mm.Sinusoidal wave form annulus cell cube structural entity is wide to be 0.1～1.2mm.Stent length is to control by the number that increases or reduce sinusoidal wave circular cell body structure, and it is fixed that it selects for use principle to come according to the length of blood vessel focus, and selected stent length should be a bit larger tham focus length.The support material is high molecule plastic, degradable metal material or the degradable polymer material of Stainless Steel, Ultimum Ti, cobalt complexation gold, biocompatibility.Ultimum Ti is self expandable fast, and adherent property is better.Other metal can adopt the inflated expansion.
Support with above structure and described material can be applicable to, for example:
1. intracranial intervention support.Be used for cerebrovascular malformation, blood vessel embolism, artery is leaked.
2. peripheral blood vessel stent in the treatment ventral aorta, thoracic aorta is narrow.
The utility model has the advantages that major axis bendable curvature is big; Radial support power is strong and vascular compliance is good; The metal space occupied area relatively; Position and the vary in diameter different according to blood vessel, the variation of vascular bending degree can change axially and the quantitative proportion of the wavy support bar of dextrorotation radially, thereby adjust its pliability, conveniently enter full of twists and turns blood vessel; This supporting structure is simple, practicality is easy to production and processing.
Description of drawings
Fig. 1 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that this support is by several sinusoidal wave form annulus cell cubes (1) structure, axially and radially forms the unit (2) of each sealing by it.
Fig. 2 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.
Fig. 3 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.
Fig. 4 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.
The specific embodiment
Example one: Fig. 1 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that this support is by several sinusoidal wave form annulus cell cubes (1) structure, axially and radially forms the unit (2) of each sealing by it.
Example two: Fig. 2 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure, form that the quantity of its axial support bar is less than the quantity of radial strut, axial sinusoidal wave support bar of the sine wave of per 2 radial support connection by a plurality of uniformly axially and radially wavy support bars of dextrorotation.
Example three: Fig. 3 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that is made up of a plurality of uniformly axially and radially wavy support bars of dextrorotation, the quantity of its axial support bar is less than the quantity of radial strut, radial strut can be every two or three unit appearance once.Discontinuous local connecting rod forms a bigger closed loop.
Example four: Fig. 4 is the cross-sectional view that the radial and axial even sinusoidal wave form annulus cell cube of this utility model design is formed.Show among the figure that is made up of a plurality of uniformly axially and radially wavy support bars of dextrorotation, the quantity of its axial support bar is less than the quantity of radial strut, radial strut can be every two or three unit appearance once.Discontinuous local connecting rod forms a bigger closed loop.
Claims (5)
1. one kind has super elastic structure intravascular stent, it is characterized in that, is webmaster shape structure, comprises the wavy supporting construction bar composition of a plurality of even dextrorotations, and dextrorotation ripple radian wherein is the standard circular arc.
2. a kind of super elastic structure intravascular stent that has according to claim 1, it is characterized in that, webmaster shape structure is made up of a plurality of uniformly axially and radially sinusoidal wave shape support bars, the quantity of its axial support bar can greater than, be less than or equal to the quantity of radial strut, its quantitative proportion is 1: 10-10: 1.
3. a kind of super elastic structure intravascular stent that has according to claim 1 is characterized in that, the wide circular radial ring element body muscle width that is less than or equal to of the axial connector muscle of sinusoidal wave shape support bar, and its quantitative proportion is 1: 1-1: 3.
4. a kind of super elastic structure intravascular stent that has according to claim 1 is characterized in that support length overall 8～40mm, external diameter 1.0～4mm, wall thickness 0.05～0.12mm.
5. a kind of super elastic structure intravascular stent that has according to claim 1 is characterized in that the support material is a Stainless Steel, Ultimum Ti, the high molecule plastic of cobalt complexation gold or biocompatibility, degradable metal material or degradable polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201501840U CN201008590Y (en) | 2006-12-05 | 2006-12-05 | Blood vessel bracket with super elastic force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201501840U CN201008590Y (en) | 2006-12-05 | 2006-12-05 | Blood vessel bracket with super elastic force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201008590Y true CN201008590Y (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201501840U Expired - Fee Related CN201008590Y (en) | 2006-12-05 | 2006-12-05 | Blood vessel bracket with super elastic force |
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| CN (1) | CN201008590Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104491934A (en) * | 2014-12-25 | 2015-04-08 | 东莞颠覆产品设计有限公司 | Expansible coronary stent provided with collagen tectorial membrane |
| CN105496604A (en) * | 2016-01-22 | 2016-04-20 | 山东省千佛山医院 | Cardiac coronary artery stent |
| CN105769398A (en) * | 2016-03-18 | 2016-07-20 | 上海工程技术大学 | Biodegradable vascular stent based on polyhedron deformation mechanism |
| CN106236339A (en) * | 2016-07-22 | 2016-12-21 | 江苏大学 | A kind of it is applicable to the conical blood vessel support that bifurcated vessels master props up |
| CN108969165A (en) * | 2018-06-13 | 2018-12-11 | 哈尔滨工业大学 | A kind of 4D printing shape memory polymer composite material trachea bracket and preparation method thereof |
| CN113274176A (en) * | 2021-05-26 | 2021-08-20 | 河南科技大学第一附属医院 | Angle-adjustable heart stent with local amplification function |
-
2006
- 2006-12-05 CN CNU2006201501840U patent/CN201008590Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104491934A (en) * | 2014-12-25 | 2015-04-08 | 东莞颠覆产品设计有限公司 | Expansible coronary stent provided with collagen tectorial membrane |
| WO2016101566A1 (en) * | 2014-12-25 | 2016-06-30 | 东莞颠覆产品设计有限公司 | Expansible cardiovascular stent with collagen covering membrane |
| CN105496604A (en) * | 2016-01-22 | 2016-04-20 | 山东省千佛山医院 | Cardiac coronary artery stent |
| CN105769398A (en) * | 2016-03-18 | 2016-07-20 | 上海工程技术大学 | Biodegradable vascular stent based on polyhedron deformation mechanism |
| CN106236339A (en) * | 2016-07-22 | 2016-12-21 | 江苏大学 | A kind of it is applicable to the conical blood vessel support that bifurcated vessels master props up |
| CN106236339B (en) * | 2016-07-22 | 2018-06-01 | 江苏大学 | A kind of conical blood vessel stent suitable for the main branch of bifurcated vessels |
| CN108969165A (en) * | 2018-06-13 | 2018-12-11 | 哈尔滨工业大学 | A kind of 4D printing shape memory polymer composite material trachea bracket and preparation method thereof |
| CN113274176A (en) * | 2021-05-26 | 2021-08-20 | 河南科技大学第一附属医院 | Angle-adjustable heart stent with local amplification function |
| CN113274176B (en) * | 2021-05-26 | 2023-06-23 | 河南科技大学第一附属医院 | Heart support with adjustable angle and local amplification |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN BAICHANG MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER NAME: TIANJIN BAICHANG MEDICAL EQUIPMENT SCIENCE + TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 300384 Tianjin Huayuan Industrial Park Rong Yuan Road No. nine floor room 104-106 Patentee after: Tianjin bestchance Medical Devices Co. Address before: 300384 Tianjin Huayuan Industrial Park Rong Yuan Road No. nine Patentee before: Tianjin Bestchance Medical Device Science&Technology Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vascular stent with super elastic structure Effective date of registration: 20140801 Granted publication date: 20080123 Pledgee: Tianjin Mingxin microfinance Co., Ltd. Pledgor: Tianjin bestchance Medical Devices Co. Registration number: 2014120000036 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080123 Termination date: 20141205 |
|
| EXPY | Termination of patent right or utility model |