CN104840271A - Swirling vena cava filter - Google Patents
Swirling vena cava filter Download PDFInfo
- Publication number
- CN104840271A CN104840271A CN201510313497.7A CN201510313497A CN104840271A CN 104840271 A CN104840271 A CN 104840271A CN 201510313497 A CN201510313497 A CN 201510313497A CN 104840271 A CN104840271 A CN 104840271A
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- CN
- China
- Prior art keywords
- swirling
- filter
- vena cava
- millimeters
- guider
- 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.)
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Abstract
The invention relates to a vena cava filer with a swirling guider, and belongs to the field of medical equipment. The invention aims to solve a problem of thrombus blockage after the traditional filter is implemented in the vena cava. The swirling vena cava filter is composed of two parts, namely a swirling guider part and a conventional umbrella-shaped filter screen, and the two parts are combined into an integral whole. The swirling vena cava filter is characterized in that the spiral distance in a spiral structure which is from small to big along the opening direction of the filter screen ranges from 5 to 20 millimeters, and the section of a spiral metal wire takes the shape of a circle with the diameter being less than 2 millimeters. The swirling guider of the filter has the function of enabling blood stream to move rotatably, and can increase the flowing shear stress and better scour the filter screen at the same time, thereby achieving the purpose of preventing or alleviating thrombus blockage, and having important clinical application values.
Description
Technical field
The present invention relates to a kind of vena cava filter, specifically relate to a kind of vena cava filter guiding blood flow to rotate flow forward, belong to the field of medical apparatus and instruments.
Background technology
IVCF is a kind of intervention apparatus of the thrombosis inflow heart for preventing patient's lower limb body Deep venou place from being formed.After postcava device is implanted, thrombosis often blocks filter, forces doctor to be taken out by filter, again implants new filter.Current vena cava filter develops into the second filial generation.Although second filial generation vena cava filter can send into human body with conduit, taken out from human body with conduit, the thrombosis blocking after vena cava filter implantation is not resolved.Find after deliberation, human aortic bow, in space three-dimensional helical form, just this helicoidal structure, makes the blood flow at aortic arch place be turn fluidised form.The benefit of this fluidised form is, on the one hand, it can make blood flow stablize, and reduces turbulent flow; On the other hand, it can make blood vessel wall obtain smooth washing away, and in minimizing blood, harmful substance (as lipid etc.) is in the deposition of blood vessel wall.To be that ascending aorta vascular wall is smooth wash away the guarantee formed with atherosclerosis for the turn of aortic arch place blood flow.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of vena cava filter guiding blood flow to rotate flow forward is proposed, its objective is and make the blood flow in caval vein produce turn, thus be conducive to the heap sum self-dissolving solution preventing thrombosis in vena cava filter, dredge the flowing of blood flow in filter, thus solve the thrombosis blockage problem of vena cava filter.
Concrete scheme of the present invention is: a kind of swirling vena cava filter, is characterized in that, the filter screen of routine is connected with the eddy flow conductor guiding blood flow, and this eddy flow conductor is helical structure.
Adopt such scheme can produce following effect: (1) makes blood be turn fluidised form, this turn fluidised form of blood can the excess accumulation of anti-tampon, improves the valid circulation area in filter.(2) this turn fluidised form also have stir companion effect, make the thrombosis accelerate dissolution in filter, anti-tampon gets lodged on filter screen.(3) shear stress of caval vein blood vessel wall can be improved, effectively prevent acute thrombus blocking.
Accompanying drawing illustrates:
Fig. 1 is front view of the present invention;
Fig. 2 is top view of the present invention;
Fig. 3 is upward view of the present invention;
In Fig. 1: spiral part A is eddy flow conductor part; Part B is traditional " umbrella " the conventional filter screen of shape.
Specific embodiments
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
As shown in drawings: the present invention is made up of the eddy flow conductor (A) of a helical structure and conventional filter screen (B) two parts, two parts close as a whole, this eddy flow conductor is the helical structure changed from small to big along screen port direction, pitch scope is between 5 to 20 millimeters, the cross section of spiral metal wire is the circle that diameter is constant, and diameter is less than 2 millimeters.
Claims (2)
1. a swirling vena cava filter, this filter is made up of spiral helicine eddy flow conductor and conventional filter screen two parts, and two parts close as a whole.
2. the eddy flow conductor of swirling vena cava filter according to claim 1, it is characterized in that: along screen port direction, the helical structure changed from small to big, pitch scope is between 5 to 20 millimeters, the cross section of spiral metal wire is the circle that diameter is constant, and diameter is less than 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510313497.7A CN104840271A (en) | 2015-06-09 | 2015-06-09 | Swirling vena cava filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510313497.7A CN104840271A (en) | 2015-06-09 | 2015-06-09 | Swirling vena cava filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104840271A true CN104840271A (en) | 2015-08-19 |
Family
ID=53840536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510313497.7A Pending CN104840271A (en) | 2015-06-09 | 2015-06-09 | Swirling vena cava filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104840271A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107595432A (en) * | 2017-08-28 | 2018-01-19 | 科塞尔医疗科技（苏州）有限公司 | Coordinate component, its preparation method, its shaped device and its stowage of filter |
| CN110251272A (en) * | 2019-06-13 | 2019-09-20 | 杜伟远 | A kind of skeleton three-dimensional cardiovascular inner supporting device of attaching |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732106A (en) * | 2008-11-10 | 2010-06-16 | 北京航空航天大学 | Swirling vena cava filter |
-
2015
- 2015-06-09 CN CN201510313497.7A patent/CN104840271A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732106A (en) * | 2008-11-10 | 2010-06-16 | 北京航空航天大学 | Swirling vena cava filter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107595432A (en) * | 2017-08-28 | 2018-01-19 | 科塞尔医疗科技（苏州）有限公司 | Coordinate component, its preparation method, its shaped device and its stowage of filter |
| CN107595432B (en) * | 2017-08-28 | 2019-09-24 | 科塞尔医疗科技（苏州）有限公司 | Cooperate component, preparation method, its molding machine and its stowage of filter |
| CN110251272A (en) * | 2019-06-13 | 2019-09-20 | 杜伟远 | A kind of skeleton three-dimensional cardiovascular inner supporting device of attaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |
|
| WD01 | Invention patent application deemed withdrawn after publication |