CN101732106A - Swirling vena cava filter - Google Patents
Swirling vena cava filter Download PDFInfo
- Publication number
- CN101732106A CN101732106A CN200810226224A CN200810226224A CN101732106A CN 101732106 A CN101732106 A CN 101732106A CN 200810226224 A CN200810226224 A CN 200810226224A CN 200810226224 A CN200810226224 A CN 200810226224A CN 101732106 A CN101732106 A CN 101732106A
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- China
- Prior art keywords
- filter
- vena cava
- guider
- swirling
- filter screen
- 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 discloses a vena cava filter with a swirling guider, aiming at solving the problem of thrombus blockage after the traditional filter is implemented in the vena cava. The vena cava filter with the swirling guider consists of two parts, namely a swirling guider part and a normal umbrella-shaped filter screen, and the two parts are combined into a whole. The swirl guider is characterized in that spiral distances 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 less than 2 millimeters. The swirl guider of the filter has the function of enabling blood stream in the filter to move rotatably, and simultaneously increases the flowing shear stress, better scours the filter screen and reduces or eliminates the accumulation of thrombus in the filter, thereby achieving the purpose of preventing or alleviating filter blockage caused by thrombus and having important clinical application value.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, more particularly, is the mobile forward vena cava filter of guiding blood flow rotation.
Background technology
IVCF is to be used to prevent that the thrombosis of the dark vein of patient's lower limb body place formation from flowing into a kind of intervention apparatus of heart.After IVCF was implanted, thrombosis tended to stop up filter, forces doctor that filter is taken out, and implants new filter again.Vena cava filter has developed into the second filial generation at present.Though second filial generation vena cava filter can be sent into human body with conduit, also can from human body it be taken out with conduit, the thrombosis after vena cava filter is implanted blockage problem once more is not resolved.Find that after deliberation the human aortic bow is the space three-dimensional helical form, this helicoidal structure makes the blood flow at aortic arch place be the turn fluidised form just.The benefit of this fluidised form is that on the one hand, it can make blood flow stable, reduces turbulent flow; On the other hand, it can make blood vessel wall obtain smooth washing away, and reduces the deposition of harmful substance in the blood (as lipid etc.) in blood vessel wall.To be that the ascending aorta vascular wall is smooth wash away in case the guarantee that the stop pulse atherosclerosis forms in the turn of aortic arch place blood flow.
Summary of the invention
The objective of the invention is to make the blood flow in the vena cava filter to produce turn, thereby help preventing the accumulation of thrombosis in the vena cava filter and dissolving certainly, dredge flowing of the interior blood flow of filter, thereby 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 be connected with the eddy flow conductor of guiding blood flow on the filter screen of routine, this eddy flow conductor is a helical structure.
Adopt such scheme can produce following effect: (1) makes blood be the turn fluidised form, and this turn fluidised form of blood can be prevented the excessive accumulation of tampon, improves the valid circulation area in the filter.(2) this turn fluidised form also has stirring action, makes the thrombosis accelerate dissolution in the filter, and anti-tampon gets lodged on the filter screen.(3) can improve the interior shear stress of vena cava filter, prevent that effectively acute thrombus from forming.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is a vertical view of the present invention;
Fig. 3 is a upward view of the present invention;
Among Fig. 1: spiral A partly is an eddy flow conductor part; B partly is traditional conventional filter screen of " umbrella " shape.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
As shown in Figure 1: patent of the present invention is made up of the eddy flow conductor and the conventional filter screen of a helical structure, and the cross section of this helical structure is circular, and diameter is less than 2 millimeters.The pitch of helical form conductor is the 5-20 millimeter.
Claims (2)
1. swirling vena cava filter, this filter is made up of spiral helicine eddy flow conductor and two parts of conventional filter screen, and two parts close as a whole.
2. the eddy flow conductor feature of vena cava filter according to claim 1: along the filter screen opening direction, the helicoidal structure that changes from small to big, the pitch scope is between 5 to 20 millimeters, and the cross section of spiral metal wire is the constant circle of diameter, and diameter is less than 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810226224A CN101732106A (en) | 2008-11-10 | 2008-11-10 | Swirling vena cava filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810226224A CN101732106A (en) | 2008-11-10 | 2008-11-10 | Swirling vena cava filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101732106A true CN101732106A (en) | 2010-06-16 |
Family
ID=42456487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810226224A Pending CN101732106A (en) | 2008-11-10 | 2008-11-10 | Swirling vena cava filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101732106A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840271A (en) * | 2015-06-09 | 2015-08-19 | 北京航空航天大学 | Swirling vena cava filter |
| CN105520791A (en) * | 2015-09-08 | 2016-04-27 | 上海宏普医疗器械有限公司 | Novel retrievable vena cava thrombus filter |
| 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 |
| CN110226989A (en) * | 2019-06-24 | 2019-09-13 | 内蒙古工业大学 | A kind of eddy current type vena cava filter and biofilter system |
-
2008
- 2008-11-10 CN CN200810226224A patent/CN101732106A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104840271A (en) * | 2015-06-09 | 2015-08-19 | 北京航空航天大学 | Swirling vena cava filter |
| CN105520791A (en) * | 2015-09-08 | 2016-04-27 | 上海宏普医疗器械有限公司 | Novel retrievable vena cava thrombus filter |
| 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 |
| CN110226989A (en) * | 2019-06-24 | 2019-09-13 | 内蒙古工业大学 | A kind of eddy current type vena cava filter and biofilter system |
| CN110226989B (en) * | 2019-06-24 | 2024-04-02 | 内蒙古工业大学 | Vortex type vena cava filter and filter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100616 |