CN2203885Y - Stainless steel swellable support used in blood vessel - Google Patents
Stainless steel swellable support used in blood vessel Download PDFInfo
- Publication number
- CN2203885Y CN2203885Y CN 94218587 CN94218587U CN2203885Y CN 2203885 Y CN2203885 Y CN 2203885Y CN 94218587 CN94218587 CN 94218587 CN 94218587 U CN94218587 U CN 94218587U CN 2203885 Y CN2203885 Y CN 2203885Y
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- blood vessel
- trestle
- support used
- steel filament
- 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
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Abstract
The utility model relates to a stainless steel swellable support used in blood vessel, belonging to a medical utensil used in the blood vessel of human body, which is mainly suitable for therapy for angiostenosis obstructive affection. Phi 0.1-0.3 mm stainless steel filaments are alternately pressed with each other, and are knitted into a reticular round tubular trestle. The diameter of the round tubular trestle is 8-50 mm, the length is 40-100 mm, and the helix angle of a single stainless steel filment is 30 DEG-60 DEG. The trestle has the advantages of satisfactory stability and elastic property, high patency rate, good biocompatibility, low proce, etc.
Description
This utility model belongs to the medical apparatus that uses in human vas, mainly be applicable to the treatment of the obstructive illness of angiostenosis.
The obstructive illness of angiostenosis adopts percutaneous puncture intracavity forming operation (PTA) treatment to be tending towards ripe.According to U.S.'s statistics in 1989,1800 hospitals in the whole nation carry out this technology, annual treatment 320,000 patients (comprising coronary artery, renal artery, ilium-femoral artery), but restenosis or the acute obturation of PTA take place in about 30% patient in half a year.The eighties has been carried out laser angioplasty mid-term for this reason, new techniques such as arterial plaque keratectomy, wherein 2 years blood vessels of laser angioplasty take up rate and can reach 82%, the speckle keratectomy can reach 76%, all be higher than skin puncture intracavity forming operation (reaching 75%), but still can not satisfy medical requirement, need to develop blood vessel for this reason and take up rate higher, biocompatibility is better, can improve the new technique and the medical apparatus of late result.
The purpose of this utility model is to provide a kind of medical eject rustless steel endovascular stent, this support not only has good geometrical stability, enough elastic deformabilities, good physical and chemical stability and biocompatibility, and the blood vessel height that takes up rate, cheap, keep good stable long term medical effect.
To achieve these goals, the medical eject rustless steel of this utility model endovascular stent adopts the stainless steel filament of φ 0.1～φ 0.4mm to be woven into netted garden cylindrical stent through suitable weaving, this network structure be stainless steel filament with stainless steel filament between alternately press mutually, the helical angle of single stainless steel filament is 30 °～60 °, the diameter of this garden cylindrical stent stable dimensions is: φ 8～50mm, length is: 40～100mm.
The medical eject rustless steel of this utility model endovascular stent is applied to the treatment of angiostenosis obstructive disease, during use, earlier in the outer conductor with the double-layer plastic delivery conduit of packing into after this support compression, use percutaneous puncture intracavity forming operation (PTA) that double-layer tube is sent in the blood vessel then, deliver to specific site of pathological change by the X-ray shadowgraph technique, take out outer conductor, this support is ejected and is flicked by inner conductor, with angiostenosis block the place open-minded, take out inner conductor then.This moment, this support closely contacted with blood vessel, and this support can be crooked arbitrarily, quantitatively expansion, can make the length that needs, can generate the blood vessel cell of one deck densification after after a while on this support, grain boundary corrosion does not take place in material therefor, has excellent biological compatibility, thereby in the long-term implant into body, can guarantee that unblocked blood flowing is without hindrance, thereby this material have good corrosion stability, biocompatibility, blood compatibility in use can not be damaged.
Compared with prior art, advantage of the present utility model is:
(1) has good geometrical stability, enough elastic deformabilities.
(2) grain boundary corrosion does not take place, have excellent biological compatibility and physical and chemical stability, but its surface feeder vessels endotheliocyte adheres to the uniform inner membrance of formation.
(3) the blood vessel height that takes up rate.
(4) cheap.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of facing of the present utility model.
Among Fig. 1,1 is stainless steel filament.
Making structure of the present utility model is as follows: the stainless steel filament (1) of employing φ 0.1～0.4mm is woven into stainless steel filament through suitable weaving and replaces the netted garden cylindrical stent of pressing mutually with stainless steel filament, the diameter of this garden cylindrical stent stable dimensions is: φ 8～50mm, length is: 40～100mm, the helical angle of single stainless steel filament is 30 °～60 °.
When the medical eject rustless steel of this utility model endovascular stent uses, this support is implanted the animal intra-arterial, by stages (1 week, 2 weeks, 4 weeks, March, June, December, 18 months) do the angiography test, its blood vessel takes up rate and reaches 96%, take a sample respectively and under light microscopic and Electronic Speculum, observe, grain boundary corrosion does not take place, find to generate on this support the blood vessel cell of one deck densification, illustrate and the utlity model has excellent biological compatibility, physical and chemical stability.
Claims (1)
1, a kind of medical eject rustless steel endovascular stent is characterized in that: adopt Φ 0.1～0.4mm stainless steel filament to be woven into stainless steel filament and replace the netted garden cylindrical stent of pressing mutually each other with stainless steel filament; The diameter of this garden cylindrical stent stable dimensions is: 8～50mm, and length is: 40～100mm; The helical angle of single stainless steel filament is: 30 °～60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218587 CN2203885Y (en) | 1994-08-24 | 1994-08-24 | Stainless steel swellable support used in blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94218587 CN2203885Y (en) | 1994-08-24 | 1994-08-24 | Stainless steel swellable support used in blood vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2203885Y true CN2203885Y (en) | 1995-07-26 |
Family
ID=33833716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94218587 Expired - Fee Related CN2203885Y (en) | 1994-08-24 | 1994-08-24 | Stainless steel swellable support used in blood vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2203885Y (en) |
-
1994
- 1994-08-24 CN CN 94218587 patent/CN2203885Y/en not_active Expired - Fee Related
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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 |