CN203749653U - Endovascular intervention stent retracting and releasing system - Google Patents
Endovascular intervention stent retracting and releasing system Download PDFInfo
- Publication number
- CN203749653U CN203749653U CN201420121570.1U CN201420121570U CN203749653U CN 203749653 U CN203749653 U CN 203749653U CN 201420121570 U CN201420121570 U CN 201420121570U CN 203749653 U CN203749653 U CN 203749653U
- Authority
- CN
- China
- Prior art keywords
- blood vessel
- intervention support
- retraction system
- intervention
- inner core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 19
- 241000463219 Epitheca Species 0.000 claims abstract description 9
- 210000004204 blood vessel Anatomy 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 13
- 239000008280 blood Substances 0.000 claims description 7
- 210000004369 blood Anatomy 0.000 claims description 7
- 230000001732 thrombotic effect Effects 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 3
- 229910010380 TiNi Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- -1 dioctyl phthalate diethyl alcohol ester Chemical class 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229950000845 politef Drugs 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 206010002329 Aneurysm Diseases 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 4
- 201000011066 hemangioma Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 201000008450 Intracranial aneurysm Diseases 0.000 description 3
- 238000002560 therapeutic procedure Methods 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 206010020880 Hypertrophy Diseases 0.000 description 1
- 206010039330 Ruptured cerebral aneurysm Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 208000001435 Thromboembolism Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model provides an endovascular intervention stent retracting and releasing system which comprises an endovascular intervention stent and a conveying device. The endovascular intervention stent retracting and releasing system is characterized in that the endovascular intervention stent comprises a cylindrical memory alloy stent, one end of the cylindrical memory alloy stent is connected with a retracting and releasing coil, the inner diameter of the retracting and releasing coil is smaller than that of the endovascular intervention stent, the conveying device comprises an epitheca and an inner core catheter, the inner core catheter is a memory alloy tube formed by a front section large in outer diameter and a rear section small in outer diameter, the outer diameter of the front section of the inner core catheter is larger than the inner diameter of the retracting and releasing coil and smaller than the inner diameter of the endovascular intervention stent, and a barb is arranged on the peripheral of the tail end of the front section of the inner core catheter. According to the endovascular intervention stent retracting and releasing system, the endovascular intervention stent can be taken out and placed conveniently.
Description
technical field
The application relates to intervention support extension and retraction system in blood vessel.
background technology
Aneurysm is the abnormal outstanding of blood vessel or expands.Breaking of cerebral aneurysm can cause apoplexy, death or disabled.In the people that cerebral aneurysm is broken, 1/approximately at least three by dead in 30 days of breaking.In survivor, approximately the survivor of half is lost by some permanent brain functioies.Many aneurysms until they be just identified while breaking.In the U.S., estimate to surpass 1,000 ten thousand people and there is cerebral aneurysm, and have every year 30,000 people that ruptured cerebral aneurysm occurs.
Aneurysmal Therapeutic Method mainly contains two kinds: surgical clips is closed and interventional therapy.Main purpose is all that blocking-up or minimizing blood enter aneurysm cavity, alleviates tumor intracavity blood and flows, and impels tumor intracavity to form thromboembolism, avoids aneurysmal development and breaks.Endovascular stent interventional therapy method has very significantly advantage with respect to traditional operative treatment, and wound is slight, mortality rate is low, average of operation periods is short, cost is low etc., so more and more receive that clinical medical attention, current clinical practice are very extensive.
But how intervention support treatment aneurysm in current blood vessel, after aneurysm treatment completes, take out easily, is a problem demanding prompt solution.If adopt intervention support in permanent blood vessel, after completing, do not take out aneurysm treatment, may cause serious rejection, cause the angiostenosis of support portions, even may cause the improper hypertrophy of support contact site cell tissue.
utility model content
In order to solve intervention support in prior art medium vessels, be difficult to the problem reclaiming, this utility model provides intervention support extension and retraction system in a kind of blood vessel.
According to one side of the present utility model, relate to intervention support extension and retraction system in a kind of blood vessel, in described blood vessel, intervention support extension and retraction system comprises intervention support and conveyer device thereof in blood vessel, in described blood vessel, intervention support includes cylindrical shape memory alloy stent, in described blood vessel, intervention support one end is connected with folding and unfolding coil, and the external diameter of described folding and unfolding coil is less than the internal diameter of intervention support in described blood vessel; Described conveyer device comprises epitheca and inner core conduit, the memory alloy pipes of described inner core conduit for consisting of the larger leading portion of external diameter and the less back segment of external diameter; Described inner core conduit leading portion external diameter is greater than described folding and unfolding internal coil diameter and is less than intervention support internal diameter in described blood vessel; Described inner core conduit leading portion end periphery is provided with barb.
In this blood vessel, intervention support is coated with and easily brings out thrombotic biological film material at described cylindrical shape memory alloy stent outer surface, the non-degradable macromolecular material can with micro-nano poroid structure or matrix structure can be specifically polrvinyl chloride, polyphenyl dioctyl phthalate diethyl alcohol ester or tetrafluoroethene.
In this blood vessel, intervention support is coated with the biological film material with good blood compatibility at described cylindrical shape memory alloy stent inner surface, can be specifically politef.
Described memorial alloy can be TiNi marmem.
This utility model embodiment has at least realized following beneficial effect:
Intervention support extension and retraction system in blood vessel provided by the utility model, can be recovered intervention support in blood vessel easily.
In blood vessel that this utility model provides, intervention support, at the inside and outside clad of memory alloy stent, is beneficial to the thrombosed while in hemangioma, is conducive to again keep the blood flow of intervention support inner chamber in this blood vessel unimpeded.
accompanying drawing explanation
By the description of carrying out below in conjunction with accompanying drawing, above and other object of the present utility model and feature will become apparent, wherein:
Fig. 1 is intervention support axial view in this utility model blood vessel;
Fig. 2 is intervention support conveyer device inner core conduit leading portion schematic diagram in this utility model blood vessel;
Fig. 3 is intervention support receiving state cut-away view in this utility model blood vessel.
Wherein,
1 is intervention support in blood vessel;
2 is folding and unfolding coil;
3 is barb;
4 is leading portion;
5 is back segment;
6 is epitheca.
the specific embodiment
Below, describe with reference to the accompanying drawings embodiment of the present utility model in detail.
Front end described in the utility model refers to the one end away from operation technique person, and described rear end refers to one end of the person that approaches operation technique.
Intervention support extension and retraction system in the blood vessel that this utility model provides, comprise intervention support 1 and conveyer device thereof in blood vessel, in described blood vessel, intervention support includes cylindrical shape memory alloy stent, during operation, this memory alloy stent is compressed to epitheca 6 inner chamber front ends, inner core conduit is the mode in abutting connection with this memory alloy stent with the larger leading portion 4 of external diameter, be placed in the rear end of epitheca 6 inner chambers, under the propelling movement effect of this memory alloy stent at inner core conduit, from epitheca intracavity is discharged in patient vessel, return to original diameter, and support the blood vessel at position, place, blood flow can be flowed by the inner chamber of this support, and intercept the flowing of hemangioma inner blood of this position blood vessel, be beneficial to form thrombosis in hemangioma.
In this blood vessel, intervention support one end is connected with folding and unfolding coil 2, and the external diameter of described folding and unfolding coil 2 is less than the internal diameter of intervention support in described blood vessel.When adopting conveyer device to reclaim in this blood vessel intervention support, the larger leading portion 4 of inner core conduit external diameter is after epitheca inner chamber front end is deviate from, because it is made by memory alloy material, so, can recover rapidly its original external diameter.Because described inner core conduit leading portion external diameter is greater than described folding and unfolding internal coil diameter and is less than intervention support internal diameter in described blood vessel, and described inner core conduit leading portion end periphery is provided with barb 3, makes this barb 3 be easy to just can be suspended on this folding and unfolding coil 2.Operation technique person passes through this inner core conduit of pull to the back-end, intervention support in this blood vessel can be received in epitheca inner chamber, and then take out in blood vessel.
In this blood vessel intervention support described cylindrical shape memory alloy stent outer surface coated easily bring out thrombotic biological film material, be beneficial to the blood flow intercepting in hemangioma, to form thrombosis.This clad can have the non-degradable macromolecular material of micro-nano poroid structure or matrix structure, can be specifically polrvinyl chloride, polyphenyl dioctyl phthalate diethyl alcohol ester or tetrafluoroethene.
In this blood vessel, intervention support is coated with the biological film material with good blood compatibility at described cylindrical shape memory alloy stent inner surface, is conducive to the inner chamber that blood flow flows through intervention support in blood vessel smoothly.This clad can be specifically politef.
This utility model memorial alloy used can be TiNi marmem.
Although represent with reference to preferred embodiment and described the present invention, it should be appreciated by those skilled in the art that in the situation that do not depart from the spirit and scope of the present invention that are defined by the claims, can carry out various modifications and conversion to these embodiment.
Claims (8)
1. intervention support extension and retraction system in a blood vessel, in described blood vessel, intervention support extension and retraction system comprises intervention support and conveyer device thereof in blood vessel, it is characterized in that, in described blood vessel, intervention support includes cylindrical shape memory alloy stent, in described blood vessel, intervention support one end is connected with folding and unfolding coil, and the external diameter of described folding and unfolding coil is less than the internal diameter of intervention support in described blood vessel;
Described conveyer device comprises epitheca and inner core conduit, the memory alloy pipes of described inner core conduit for consisting of the larger leading portion of external diameter and the less back segment of external diameter;
Described inner core conduit leading portion external diameter is greater than described folding and unfolding internal coil diameter and is less than intervention support internal diameter in described blood vessel;
Described inner core conduit leading portion end periphery is provided with barb.
2. the interior intervention support extension and retraction system of blood vessel described in claim 1, is characterized in that, in this blood vessel, intervention support is coated with and easily brings out thrombotic biological film material at described cylindrical shape memory alloy stent outer surface.
3. intervention support extension and retraction system in blood vessel described in claim 2, is characterized in that, describedly easily brings out thrombotic biological film material and has micro-nano poroid structure or matrix structure.
4. intervention support extension and retraction system in blood vessel described in claim 3, is characterized in that, described easily to bring out thrombotic biological film material be non-degradable macromolecular material.
5. intervention support extension and retraction system in blood vessel described in claim 4, is characterized in that, described easily to bring out thrombotic biological film material be polrvinyl chloride, polyphenyl dioctyl phthalate diethyl alcohol ester or tetrafluoroethene.
6. the interior intervention support extension and retraction system of blood vessel described in claim 1, is characterized in that, in described blood vessel, intervention support is coated with the biological film material with good blood compatibility at described cylindrical shape memory alloy stent inner surface.
7. intervention support extension and retraction system in blood vessel described in claim 6, is characterized in that, described in there is good blood compatibility biological film material be politef.
8. the interior intervention support extension and retraction system of blood vessel described in claim 1-7 any one, is characterized in that, described memorial alloy can be TiNi marmem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121570.1U CN203749653U (en) | 2014-03-18 | 2014-03-18 | Endovascular intervention stent retracting and releasing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121570.1U CN203749653U (en) | 2014-03-18 | 2014-03-18 | Endovascular intervention stent retracting and releasing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203749653U true CN203749653U (en) | 2014-08-06 |
Family
ID=51244962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420121570.1U Expired - Fee Related CN203749653U (en) | 2014-03-18 | 2014-03-18 | Endovascular intervention stent retracting and releasing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203749653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018103662A1 (en) * | 2016-12-08 | 2018-06-14 | 先健科技(深圳)有限公司 | Conveying system for implant |
-
2014
- 2014-03-18 CN CN201420121570.1U patent/CN203749653U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018103662A1 (en) * | 2016-12-08 | 2018-06-14 | 先健科技(深圳)有限公司 | Conveying system for implant |
| CN108186176A (en) * | 2016-12-08 | 2018-06-22 | 先健科技(深圳)有限公司 | The transport system of implantation material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160927 Address after: 350002, 14 floor, technical transfer center, No. 611 Industrial Road, Gulou District, Fujian, Fuzhou Patentee after: HUARUI (FUJIAN) BIOTECHNOLOGY CO.,LTD. Address before: 100085, D204 building, Zhongguancun development building, 12 information road, Haidian District, Beijing Patentee before: Hu Kun Patentee before: Lin Guangqin Patentee before: Chen Wei |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |