CN1169495C - Implantation type thrombus filter - Google Patents
Implantation type thrombus filter Download PDFInfo
- Publication number
- CN1169495C CN1169495C CNB011276193A CN01127619A CN1169495C CN 1169495 C CN1169495 C CN 1169495C CN B011276193 A CNB011276193 A CN B011276193A CN 01127619 A CN01127619 A CN 01127619A CN 1169495 C CN1169495 C CN 1169495C
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- China
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- memorial alloy
- drainage screen
- implantation type
- webmaster
- thrombus filter
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Abstract
The present invention relates to a novel implantation type thrombus filter which comprises a filtering net, an intelligent element and a connecting component. Since the intelligent element is made from shape memory alloy, the filtering net can automatically spread, and the edges of the filtering net can tightly contact the inner wall of the blood vessels. Thus, the implantation type thrombus filter can effectively prevent the atheromatous sclerosal plaque fallen from vascular pathologic changing part or thrombus from entering the important tissues or organs of human body, and can periodically recover the atheromatous sclerosal plaque or thrombus attached to the filter so as to clean the blood. The present invention has the advantages of simple operation, easy use and definite therapeutic effect.
Description
Technical field
The present invention relates to a kind of filter, particularly the implanted vascular filter.
Background technology
In carrying out blood vessel intracavity forming operation or Thrombolysis, might cause interior atherosclerotic plaque of blood vessel or thrombosis to come off, cause the supply vessels thromboembolism of vitals or tissue, thereby cause severe complication.Except that postcava has filter generation and clinical practice abroad, still there are not ideal vascular filter production of peripheral blood vessel or application at present.
Summary of the invention
The objective of the invention is to provide a kind of implanted vascular filter, when guaranteeing blood perfusion, vital tissue or organ that it can not only stop atherosclerotic plaque that vascular lesion partly comes off or thrombosis to enter human body effectively, and can regularly reclaim attached to atherosclerotic plaque on the filter or thrombosis, play the effect of blood clean, reach purpose simple to operate, easy to use, determined curative effect.
The object of the present invention is achieved like this:
Novel implantation type thrombus filter, drainage screen is fixed on the memorial alloy intelligent element by connector, and described drainage screen is through the heat treated funnel shaped memory-alloy mesh of typing; Described memorial alloy intelligent element is through heat treated memorial alloy webmaster of typing or memorial alloy helical Bourdon tube.
Described drainage screen is memorial alloy silk screen or laser engraving net, and different weaving manners or laser engraving decorative pattern can be arranged, and the maximum diameter of hole of its hole is that preferable range is between 0.3～0.8mm between 0.01～10mm; Also can substitute at the medium-term and long-term elastomeric material net of implanting of human vas with politef net or terylene net or other.
Described webmaster shape memorial alloy intelligent element can be a memory alloy wire braiding webmaster, also can be the laser engraving webmaster, and different weaving manners or laser engraving decorative pattern can be arranged; Also can substitute at the medium-term and long-term elastomeric material webmaster of implanting of human vas with other.
Described connector is generally memorial alloy silk thread, terylene silk thread or other silk thread that can implant in the human vas midium or long term, and also available medical stainless steel riveting parts substitutes.
Described drainage screen, webmaster shape memorial alloy intelligent element are that integral weaving or whole laser engraving form, the infundibulate network structure of drainage screen covers the cross section of webmaster just, and the cancellated bell mouth of the infundibulate of drainage screen connects together with the tube wall of webmaster; The hole of the void ratio memorial alloy webmaster of drainage screen is little.
During the inwall wedgewise of described webmaster shape memorial alloy intelligent element, can be used as connector, the infundibulate filter network card is on this wedge shape inwall.
Described drainage screen and memorial alloy intelligent element can be more suitable for to coat in macromolecular material that uses in blood vessel or biomaterial clad, forms the cladded type implantation type thrombus filter.
Described drainage screen is installed in the head or the middle part of memorial alloy intelligent element usually.
Described drainage screen can have different geometric shapes, is generally infundibulate; Described memorial alloy intelligent element can have different geometric shapes, is generally the double horn degree of lip-rounding, single toroidal or cylindrical etc.
Described memorial alloy is generally the NiTi marmem, and its recovery temperature can be between 30～35 ℃; The diameter of shape-memory alloy wire is between 0.08～0.35mm, and the thickness of marmem light-wall pipe is between 0.1～0.35mm.
The present invention's novel implantation type thrombus filter is owing to adopted the support fixation element of marmem webmaster as filter, when the present invention's novel implantation type thrombus filter pushes blood vessel with delivery device, under the effect of body temperature, the memorial alloy intelligent element recovers design shape rapidly, not only make the opening portion of filter can be close to blood vessel, and can prevent the filter displacement effectively, and guarantee accurately location, guarantee safety.After implanting a period of time, through clinical examination,, when having weakened the blood perfusion of supply vessels, then adopt the interventional therapy method on drainage screen if the thrombosis that has more atherosclerotic plaque to form adheres to, can be by conduit with atherosclerotic plaque or thrombosis sucking-off.
The present invention's filter manufactures different sizes; can be widely used in the various blood vessels as the protector in protector or various angioplasty and the Thrombolysis; filter atherosclerotic plaque or thrombosis, the supply vessels thromboembolism of prevention of stroke and other vitals or tissue and the severe complication that causes.
Description of drawings
Concrete structure principle of the present invention and operation principle are provided by following embodiment and accompanying drawing.
The structural representation of Fig. 1 the present invention's double horn shape thrombus filter.
The structural representation of Fig. 2 the present invention's the single tubaeform thrombus filter of integral body engraving.
The structural representation of Fig. 3 the present invention's the tubaeform thrombus filter of integral weaving list.
The structural representation of Fig. 4 the present invention's the tubaeform thrombus filter of cladded type integral weaving list.
Fig. 5 the present invention's cassette connects the structural representation of single loudspeaker thrombus filter.
The fundamental diagram of Fig. 6 the present invention's thrombus filter.
Among each figure, 1 is drainage screen, and 2 is the memorial alloy intelligent element, and 3 is connector, and 4 is atherosclerotic plaque, and 5 is blood vessel, and 6 is macromolecular material or biomaterial institute clad.
The specific embodiment
In mould, weave webmaster with the NiTi shape-memory alloy wire that recovery temperature is 33, diameter is 0.35mm, the heat treatment of in mould, finalizing the design then, make it more than recovery temperature, have the geometric modeling of design, as single tubaeform, double horn shape, cylindrical, as memorial alloy intelligent element 2.With recovery temperature is that 33 ℃, diameter are NiTi shape-memory alloy wire mesh grid in mould of 0.08mm, the maximum radial dimension of hole that makes mesh grid is between 0.3～0.8mm, the heat treatment of in mould, finalizing the design then, make its geometric modeling that more than recovery temperature, has design, as leaking capitiform; Infundibulate politef perhaps customized or polyster fibre net are as drainage screen 1.Be stitched together with the funnel shaped peristome and the memorial alloy intelligent element 2 of connector 3, promptly obtain the present invention's thrombus filter drainage screen 1.As shown in Figure 1.
With recovery temperature is 33 ℃, diameter is that the NiTi marmem sheet stamping of 0.2mm becomes the cylinder taper, reticulate through laser engraving, the maximum radial dimension of hole that makes cylinder part is between 1～8mm, and the maximum radial dimension of the hole of tapered portion is at 0.3～0.8mm, pass through glossing, the thickness that makes cylinder part between 0.3～0.35mm and the thickness of tapered portion between 0.1～0.15mm, the heat treatment of in mould, finalizing the design, make it more than recovery temperature, have the geometric modeling of design, as single horn mouth cylinder infundibulate, be the present invention's the single tubaeform thrombus filter of monolithic devices engraving, as shown in Figure 2.
With recovery temperature is that 33 ℃, diameter are the NiTi shape-memory alloy wire integral weaving list loudspeaker cylinder taper webmaster of 0.2mm, the maximum radial dimension of hole that makes cylinder part is between 1～8mm, and the maximum radial dimension of the hole of tapered portion is between 0.3～0.8, the heat treatment of in mould, finalizing the design, make it more than recovery temperature, have the geometric modeling of design, as the cylinder infundibulate, i.e. the present invention the tubaeform thrombus filter of integral weaving type list, as shown in Figure 3.
On the basis of the present invention's thrombus filter, with being more suitable for coating the memorial alloy skeleton in macromolecular material that in blood vessel, uses or biomaterial, as medical silica-gel, politef or terylene clad 6, exposed memorial alloy is partly coated fully, and keep the unobstructed of hole, promptly get the present invention's cladded type thrombus filter.As shown in Figure 4.
Afterbody typing at the webmaster shape memorial alloy intelligent element 2 of the present invention's thrombus filter is heat-treated to wedge shape, and infundibulate drainage screen 1 may be stuck on the wedge shape, and formation is connected, and promptly get the present invention's cassette connection thrombus filter.As shown in Figure 5.
Below recovery temperature, the present invention's novel implantation type thrombus filter is inserted in the delivery device, send in the blood vessel 5, withdraw from the protection sheath, discharge the present invention's novel implantation type thrombus filter.Under the effect of body temperature, the present invention's novel implantation type thrombus filter recovers design model rapidly, and memorial alloy intelligent element 2 is embedded in the blood vessel, launches drainage screen 1 simultaneously, interception atherosclerotic plaque or thrombosis 4.As shown in Figure 6.
During the drainage screen 1 of the clinical novel implantation type thrombus filter that need to clean the present invention, behind the percutaneous puncture, send into conduit, but atherosclerotic plaque or thrombosis 4 attached to drainage screen 1 funnel bottom are concentrated in sucking-off, finished cleaning the drainage screen 1 of the present invention's novel implantation type thrombus filter.
Claims (10)
1, a kind of novel implantation type thrombus filter, it is characterized in that: drainage screen (1) is fixed on the memorial alloy intelligent element (2) that is used for being embedded in blood vessel by connector (3), described drainage screen (1) is through the heat treated funnel shaped memory-alloy mesh of typing, and described memorial alloy intelligent element (2) is through heat treated memorial alloy webmaster of typing or memorial alloy helical Bourdon tube.
2, novel implantation type thrombus filter according to claim 1 is characterized in that: described drainage screen (1) is memorial alloy silk screen or laser engraving net, and different weaving manners or laser engraving decorative pattern are arranged, and the maximum diameter of hole of its hole is at 0.3～0.8mm.
3, novel implantation type thrombus filter according to claim 1 is characterized in that: described webmaster shape memorial alloy intelligent element (2) is a memory alloy wire braiding webmaster, or the laser engraving webmaster, and different weaving manners or laser engraving decorative pattern are arranged.
4, novel implantation type thrombus filter according to claim 1 is characterized in that: described connector (3) is memorial alloy silk thread or terylene silk thread.
5, novel implantation type thrombus filter according to claim 1, it is characterized in that: described drainage screen (1), webmaster shape memorial alloy intelligent element (2) are the network structure of integral weaving or whole laser engraving, the infundibulate network structure of drainage screen (1) covers the cross section of memorial alloy webmaster just, and the cancellated leakage draught animals of the infundibulate of drainage screen (1) connects together with the tube wall of memorial alloy webmaster; The hole of the void ratio memorial alloy webmaster of drainage screen (1) is little.
6, novel implantation type thrombus filter according to claim 1 is characterized in that: the inwall wedgewise of described webmaster shape memorial alloy intelligent element (2) is as connector, and drainage screen (1) is stuck on this wedge shape inwall.
7, novel implantation type thrombus filter according to claim 1 is characterized in that: described drainage screen (1) and memorial alloy intelligent element (2) are more suitable for coating in macromolecular material that uses in blood vessel or biomaterial clad (6).
8, novel implantation type thrombus filter according to claim 1 is characterized in that: described drainage screen (1) is installed in the head or the middle part of memorial alloy intelligent element (2).
9, novel implantation type thrombus filter according to claim 1 is characterized in that: described memorial alloy intelligent element (2) is the double horn degree of lip-rounding, single toroidal or cylindrical.
10, according to claim 2 or 3 described novel implantation type thrombus filters, it is characterized in that: described memorial alloy is the NiTi marmem, its recovery temperature is 33 ℃, the diameter of shape-memory alloy wire is between 0.08～0.35mm, and the thickness of marmem light-wall pipe is between 0.1～0.35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011276193A CN1169495C (en) | 2001-07-13 | 2001-07-13 | Implantation type thrombus filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011276193A CN1169495C (en) | 2001-07-13 | 2001-07-13 | Implantation type thrombus filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1328808A CN1328808A (en) | 2002-01-02 |
| CN1169495C true CN1169495C (en) | 2004-10-06 |
Family
ID=4667553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011276193A Expired - Fee Related CN1169495C (en) | 2001-07-13 | 2001-07-13 | Implantation type thrombus filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1169495C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9603693B2 (en) * | 2012-08-10 | 2017-03-28 | W. L. Gore & Associates, Inc. | Dual net vascular filtration devices and related systems and methods |
| CN102973332B (en) | 2012-11-23 | 2015-01-21 | 杭州启明医疗器械有限公司 | Thrombus filter and using method thereof |
| CN105997314B (en) * | 2016-06-30 | 2018-06-08 | 南京普微森医疗科技有限公司 | A kind of thrombus of complex function eliminates system |
| CN106667619B (en) * | 2017-01-06 | 2018-11-30 | 中国人民解放军第四军医大学 | Recoverable arteries filter |
| CN107647937B (en) * | 2017-09-07 | 2019-04-02 | 普霖医疗科技(广州)有限公司 | It is a kind of recyclable to be temporarily implanted vena cava filter |
-
2001
- 2001-07-13 CN CNB011276193A patent/CN1169495C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1328808A (en) | 2002-01-02 |
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| C06 | Publication | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041006 Termination date: 20190713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |