CN2300418Y - Support-net cavity vein filter - Google Patents
Support-net cavity vein filter Download PDFInfo
- Publication number
- CN2300418Y CN2300418Y CN 97211610 CN97211610U CN2300418Y CN 2300418 Y CN2300418 Y CN 2300418Y CN 97211610 CN97211610 CN 97211610 CN 97211610 U CN97211610 U CN 97211610U CN 2300418 Y CN2300418 Y CN 2300418Y
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- filter
- support
- shape support
- basket
- utility
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Abstract
The utility model provides a support-net cavity vein filter, which is composed of a circular ring, a net basket, reverse hooks, support brackets and a connecting wire component, wherein, the net basket is in a diamond shape or a crossed line shape. The top end and the bottom end of the net basket are respectively connected with the circular ring and the top point of an upper support bracket. Both ends of the connecting wire are respectively connected with the upper and lower support brackets tightly fixed with the reverse hooks. The filter has high efficiency for trapping thrombi and can effectively prevent fatal pulmonary infarction and avoid complications. After the filter made of biologic absorbable material is arranged in a human body, the filter can be automatically absorbed to disappear and does not need a wound operation to be taken out. The utility model ideally solves the important difficult problem of the temporary placement of the cavity vein filter.
Description
This utility model belongs to the medical apparatus technical field, the endovascular device that particularly a kind of intervention radiology is used.
The vena cava filter system that uses in the medical treatment is positioned in the caval vein by conduit, stops the dark venous thrombosis of whole body to enter and causes fatefulue lung infraction in the pulmonary artery.All adopting 4～6 one metal wires through the titanium matter Creenfield of drugs approved by FDA filter, LGM filter, Simon Nitinol filter, TuliP-vena cava filter is main body, and the one end is fixed into the top of filter with welding or hot forming technological incorporation; The other end disperses to open, and is provided with barb to be anchored on the wall of vein, forms half basket structure in order to stop bigger XUESHUANTONG mistake.Though these filters have certain thrombosis capturing efficiency, exist following subject matter and disadvantage:
Therefore 1,, in the caval vein model and all to demonstrate the thrombosis capturing efficiency in animal body build-in test and the clinical practice not high, place and still have the danger that the lung infraction takes place later because the slit between tinsel is bigger.
2, damaging proximity structure because the tinsel of buckle than between long and caval vein wall certain angle being arranged, is easily worn out wall of vein leads to complications.
The purpose of this utility model is to provide a kind of thrombosis capturing efficiency height at the subject matter and the disadvantage of above-mentioned filter existence, can prevent that mortality lung infraction from also can solve the support-netted vena cava filter of temporary placement problem.
Support of the present utility model-netted vena cava filter is by annulus, basket, and barb, upper and lower " Z " shape support, the connecting filament parts constitute.The mesh of basket is diamond shaped or longitude and latitude shape structure, the top and the annulus of basket is fastenedly connected, its bottom and the corresponding summit of last " Z " shape support are fastenedly connected, one end of connecting filament and last " Z " shape support are fastenedly connected, the other end and down " Z " shape support be fastenedly connected, at last " Z " shape support, descend on " Z " shape support to be fastened with barb respectively.
Below in conjunction with the accompanying drawing example support of the present utility model-netted vena cava filter is described in further detail.
Fig. 1 is the front view of the mesh of this utility model support-netted vena cava filter basket when being the diamond shaped structure;
Fig. 2 is the front view of the mesh of this utility model support-netted vena cava filter basket when being longitude and latitude shape structure.
Support of the present utility model-netted vena cava filter is made of annulus 1, basket 2, barb 3, last " Z " shape support 4, following " Z " shape support 5, connecting filament 6 parts.The mesh of basket 2 is diamond shaped or longitude and latitude shape structure, the top of basket 2 and annulus 1 are fastenedly connected, its bottom and last " Z " shape support 4 corresponding summits are fastenedly connected, basket 2 has elasticity, it and last " Z " shape support 4, following " Z " shape support 5 are loaded on the transmission conduit after compression, and send in the blood vessel and can expand voluntarily, be suspended in the thrombosis that blood vessel central authorities are used for catching blood flow.One end of connecting filament 6 and last " Z " shape support 4 are fastenedly connected, the other end and down " Z " shape support 5 be fastenedly connected, at last " Z " shape support 4, descend on " Z " shape support 5 to be fastened with barb 3 respectively, barb 3 is anchored on the blood vessel wall during use.Go up " Z " shape support 4, radial expansionary force and the grappling effect of barb 3 stability of having guaranteed this utility model support-netted vena cava filter of " Z " shape support 5 on blood vessel wall down, prevented moving of filter.
The annulus 1 of support of the present utility model-netted vena cava filter, basket 2, barb 3, last " Z " shape support 4, following " Z " shape support 5, connecting filament 6 are made by metal material or bioabsorbable material.Metal material can be used titanium matter or metals such as Nitinol or rustless steel, and bioabsorbable material can be with special lactic acid polymerizes body (PoiyL-lactic acid) etc.
The density of wires of support-gauze filter of the present utility model strengthens, and its slit obviously reduces, and therefore the capturing efficiency to thrombosis obviously improves, so can more effectively prevent mortality lung infraction.Because the barb on " Z " shape support is shorter, and parallel with blood vessel so be difficult for wearing out wall of vein and lead to complications.
Support-gauze filter of the present utility model is made as if the employing bioabsorbable material and can be absorbed voluntarily, disappear after being positioned over human body, not needing to do once more invasive surgery takes out, its result of use is good, thereby solved the important difficult problem of the temporary placement of vena cava filter very ideally, be easy to promote the use of.
Claims (2)
1, a kind of support-netted vena cava filter, it is characterized in that it is made of annulus 1, basket 2, barb 3, last " Z " shape support 4, following " Z " shape support 5, connecting filament 6 parts, the mesh of basket 2 is diamond shaped or longitude and latitude shape structure, the top of basket 2 and annulus 1 are fastenedly connected, its bottom and last " Z " shape support 4 corresponding summits are fastenedly connected, one end of connecting filament 6 and last " Z " shape support 4 are fastenedly connected, the other end and down " Z " shape support 5 be fastenedly connected, at last " Z " shape support 4, descend on " Z " shape support 5 to be fastened with barb 3 respectively.
2, filter according to claim 1 is characterized in that annulus 1, and basket 2, barb 3, last " Z " shape support 4, following " Z " shape support 5, connecting filament 6 are made by metal material or bioabsorbable material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97211610 CN2300418Y (en) | 1997-02-05 | 1997-02-05 | Support-net cavity vein filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97211610 CN2300418Y (en) | 1997-02-05 | 1997-02-05 | Support-net cavity vein filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2300418Y true CN2300418Y (en) | 1998-12-16 |
Family
ID=33930071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97211610 Expired - Fee Related CN2300418Y (en) | 1997-02-05 | 1997-02-05 | Support-net cavity vein filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2300418Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384389C (en) * | 2003-12-30 | 2008-04-30 | 徐林 | Self-retracting antiskid thorn-shaped filter |
| CN101389289B (en) * | 2005-12-28 | 2012-06-20 | 弗里·格里马诺维奇·安德烈耶夫 | Set for preventing a lung artery thrombembolia and an intravenous filter |
-
1997
- 1997-02-05 CN CN 97211610 patent/CN2300418Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384389C (en) * | 2003-12-30 | 2008-04-30 | 徐林 | Self-retracting antiskid thorn-shaped filter |
| CN101389289B (en) * | 2005-12-28 | 2012-06-20 | 弗里·格里马诺维奇·安德烈耶夫 | Set for preventing a lung artery thrombembolia and an intravenous filter |
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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 |