CN2577878Y - Magnetic vascular internal stents - Google Patents
Magnetic vascular internal stents Download PDFInfo
- Publication number
- CN2577878Y CN2577878Y CN 02262335 CN02262335U CN2577878Y CN 2577878 Y CN2577878 Y CN 2577878Y CN 02262335 CN02262335 CN 02262335 CN 02262335 U CN02262335 U CN 02262335U CN 2577878 Y CN2577878 Y CN 2577878Y
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- magnetic
- support
- stent
- endovascular stent
- bent
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Abstract
The utility model relates to a magnetic vascular internal stent which is used for treating coronary heart disease. The magnetic vascular internal stent comprises a stent 1, and the stent 1 comprises curved rhombus frames 2. The curved rhombus frames 2 are connected by a transverse S-shaped connecting bridge 3 and a longitudinal S-shaped connecting bridge 4. The rate of recurrence or restenosis of the utility model is low, and the supporting force, the bending degree and the capability for passing through focus of the stent are high.
Description
Technical field
This utility model relates to a kind of medical machinery, especially a kind of magnetic endovascular stent for the treatment of coronary heart disease.
Background technology
Coronary heart disease (CHD) has become one of principal disease that influences human health.Though the Drug therapy of CHD can be controlled patient's paresthesia epilepsy partly or entirely, temporarily or chronically, can not fundamentally remove pathogenic factors---the coronary stenosis of CHD, therefore can not thoroughly cure the patient; The operative treatment of CHD comprises coronary artery bypass grafting or bypass operation of coronary artery (CABG) and percutaneous intracavity arteria coronaria plasty (PTCA).Defectives such as CABG has that wound is big, technical operation difficulty height and equipment complexity; And PTCA has little, painful little, the safe relative advantage such as simple with operation of wound, and therefore, PTCA has been widely used in the CHD operative treatment of non-many arteria coronaria pathological changes, non-far-end arteria coronaria pathological changes in recent years.The great advantage of PTCA art treatment CHD is a pathogenic factors of fundamentally having removed CHD, but the PTCA severe complications such as acute stage vascular occlusion and because of the propagation of vascular smooth muscle cell, synthetic restenosis (the RS that causes of migration and extracellular matrix, incidence rate 20-30%) had a strong impact on PTCA in, therapeutic effect at a specified future date, hindered the development of PTCA art.
For solving the RS problem, carried out the exploration of various Drug therapys in recent ten years, but made slow progress weak curative effect.Therefore, the non-drug therapy means are arisen at the historic moment, and the application of endovascular stent (IvS) becomes the most rising method of PTCA severe complication that solves.Endovascular stent in the background technology generally adopts U type super-low carbon stainless steel silk compression-convergent divergent channel or rhombus from connecting super-low carbon stainless steel silk compression-expansion webmaster, and there is following shortcoming in the endovascular stent of existing structure:
1, recurrence or restenosis rate height.The endovascular stent of existing structure is because this body structure and material, its recurrence or restenosis rate height, and the RS incidence rate is 15-30%.
2, the support force of support, bendable curvature and low by the ability of focus.The endovascular stent support force of existing structure, bendable curvature and low by the ability of focus cause the operation difficulty, after endovascular stent is implanted, and poor stability, safety is low.
The utility model content
This utility model has solved the support force, bendable curvature of endovascular stent recurrence in the background technology or restenosis rate height, support and the ability low technical problem by focus.
The technical solution of the utility model is: this utility model comprises support 1, and its special character is: described support 1 comprises bent rhombus framework 2, and 2 of bent rhombus frameworks pass through horizontal " S " type crossover 3 and are connected with vertical " S " type crossover 4.
Above-mentioned support 1 adopts magnetic material to make.
Above-mentioned support 1 adopts weak magnetic multielement stainless steel alloy material to make.
The utlity model has following advantage:
1, recurrence or restenosis rate are low.This utility model adopts bent diamond shelf structure, adopts magnetic material to support simultaneously, and its recurrence or restenosis rate are low, and its RS incidence rate is lower than 5%, is significantly less than the RS incidence rate of the endovascular stent in the background technology.
2, the support force of support, bendable curvature reach the ability height by focus.This utility model adopts bent diamond shelf structure, and its support force, bendable curvature reach the ability height by focus, and operation easily, and is after endovascular stent is implanted, stable high, safe.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, this utility model comprises support 1, this support 1 comprises bent rhombus framework 2,4 limits that are the rhombus basic framework are the bent limit of identical little " S " type, be connected with horizontal " S " type crossover 3 by corresponding bent dicing between per two bent rhombus frameworks 2, can form the interconnective bent rhombus webmaster of a row like this, connect by vertical " S " type crossover 4 between the bent rhombus webmaster of per two rows, promptly long ring-type horizontal stroke " S " type crossover 3 is walked crosswise the last top that is connected in bent rhombus webmaster, short vertical " S " type crossover 4 stringers are connected in, between following two horizontal strokes " S " type crossover 3, endovascular stent is made by these a plurality of bent rhombus webmaster compressions, the diameter of support 1 can be by the rhombohedral quantity decision of song like this, the length of support 1 is by the webmaster quantity decision of bent rhombus webmaster, and the main foundation of the diameter of support 1 and length setting is the footpath, chamber and the length of lesion of the blood vessel of focus; Support 1 adopts magnetic material to make, and is good to adopt weak magnetic multielement stainless steel alloy material.During this endovascular stent molding, support 1 is compressed in the balloon surface of same diameter and length, prolongation connection tube by sacculus when using in the operation applies 4～8 atmospheric pressure to sacculus, by dilating sacculus magnetic bracket is expanded to or is a bit larger tham the blood vessel diameter level, make support 1 tightly invest blood vessel wall, blood vessel is played a supporting role, prevent to subside, bounce back, guaranteed the unobstructed of blood fortune or blood flow.
Claims (3)
1, a kind of magnetic endovascular stent comprises support (1), it is characterized in that: described support (1) comprises bent rhombus framework (2), is connected with vertical " S " type crossover (4) by horizontal " S " type crossover (3) between described bent rhombus framework (2).
2, magnetic endovascular stent as claimed in claim 1 is characterized in that: described support (1) adopts magnetic material.
3, magnetic endovascular stent as claimed in claim 2 is characterized in that: described support (1) adopts weak magnetic multielement stainless steel alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262335 CN2577878Y (en) | 2002-10-18 | 2002-10-18 | Magnetic vascular internal stents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262335 CN2577878Y (en) | 2002-10-18 | 2002-10-18 | Magnetic vascular internal stents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577878Y true CN2577878Y (en) | 2003-10-08 |
Family
ID=33728916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262335 Expired - Fee Related CN2577878Y (en) | 2002-10-18 | 2002-10-18 | Magnetic vascular internal stents |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2577878Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427046C (en) * | 2003-10-30 | 2008-10-22 | 武汉理工大学 | Medical metal bracket capable of absorbing magnetic capsule of drug |
| CN1977778B (en) * | 2005-12-08 | 2011-01-12 | 上海康德莱企业发展集团有限公司 | Vascular stent |
| WO2016197351A1 (en) * | 2015-06-11 | 2016-12-15 | Beijing Advanced Medical Technologies, Inc. | A close-cell structured stent, a preparation method and use thereof |
| CN109893305A (en) * | 2019-04-16 | 2019-06-18 | 南京医科大学附属逸夫医院 | A kind of tissue engineering bracket with subregion |
-
2002
- 2002-10-18 CN CN 02262335 patent/CN2577878Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427046C (en) * | 2003-10-30 | 2008-10-22 | 武汉理工大学 | Medical metal bracket capable of absorbing magnetic capsule of drug |
| CN1977778B (en) * | 2005-12-08 | 2011-01-12 | 上海康德莱企业发展集团有限公司 | Vascular stent |
| WO2016197351A1 (en) * | 2015-06-11 | 2016-12-15 | Beijing Advanced Medical Technologies, Inc. | A close-cell structured stent, a preparation method and use thereof |
| CN107708620A (en) * | 2015-06-11 | 2018-02-16 | 北京阿迈特医疗器械有限公司 | A kind of support of hole-closing structure, preparation method and the usage |
| US10603194B2 (en) | 2015-06-11 | 2020-03-31 | Beijing Advanced Medical Technologies, Ltd. Inc. | Close-cell structured stent, a preparation method and use thereof |
| CN107708620B (en) * | 2015-06-11 | 2020-09-11 | 北京阿迈特医疗器械有限公司 | Support with closed-loop structure, preparation method and application thereof |
| CN109893305A (en) * | 2019-04-16 | 2019-06-18 | 南京医科大学附属逸夫医院 | A kind of tissue engineering bracket with subregion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |