CN105193521A - Recoverable vena cava filter with good attachment - Google Patents
Recoverable vena cava filter with good attachment Download PDFInfo
- Publication number
- CN105193521A CN105193521A CN201510753551.XA CN201510753551A CN105193521A CN 105193521 A CN105193521 A CN 105193521A CN 201510753551 A CN201510753551 A CN 201510753551A CN 105193521 A CN105193521 A CN 105193521A
- Authority
- CN
- China
- Prior art keywords
- support rod
- branch
- vena cava
- strut
- cava filter
- 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.)
- Granted
Links
Abstract
The invention discloses a recoverable vena cava filter with good attachment. The recoverable vena cava filter comprises a cylindrical bracket, a capture claw and a support rod, wherein the cylindrical bracket is knitted by medical metal wires; the capture claw and the support rod are arranged in the bracket; the bracket comprises a net bottom which protrudes outwards to form an arc form; the capture claw is tapered and is formed by a plurality of medical metal wires which obliquely extend towards the periphery from the tapered top in a radial pattern; the support rod comprises a main support rod and a plurality of branch support rods; one end of each branch support rod is connected with the other end of the main support rod and the other end thereof obliquely extends towards the periphery; the other end of each branch support rod is in a bent arc form and is located on the outer side of the bracket; the tapered top of the capture claw and one end of the main support rod are fixedly arranged at the bottom center of the bracket; and a recovery hook is arranged on the outer side of the bottom center of the bracket. After the structure is adopted, the end part, in the bent arc form, of each branch support rod can contact the inner wall of a blood vessel to play roles of a fixing anchor; the wall of the blood vessel is not scratched; and meanwhile, the attachment can also be improved through small adjustment according to the inner diameter of the blood vessel.
Description
Technical field
The present invention relates to a kind of vena cava filter.More specifically, a kind of retrievable vena cava filter with good adherent property is related to.
Background technology
Along with the development of modern medical techniques, place thrombus filter in human vas and be just constantly applied to clinical treatment as preventing a kind of effective means of blood vessel embolism and achieve good effect at present.Vena cava filter is mainly used in treating non-arterial thrombosis (being called for short pulmonary infarction, pulmonaryembolism, PE).PE is the pathological process being blocked by pulmonary artery or a certain branch of pulmonary artery by thrombosis or embolus and cause, and be a kind of severe complication of numerous disease, after thromboembolism, lung tissue produces serious blood supply disorder, necroses.In the clinical cause of death, occupy the 3rd, be only second to hypertension and coronary heart disease.Vena cava filter is effective treatment means, significantly reduces the incidence rate of pulmonary embolism.But insert for a long time due to IVCF and cause the complication such as inferior vena cava obstruction also to cause clinical concern gradually, postcava perforation can be caused owing to implanting for a long time, filter is shifted, secondary thrombus causes the complication such as inferior vena and DVT recurrence, therefore limit its popularization.Vena cava filter has now developed into the callable Wicresoft implanted treatment stage, but the barb that existing retrievable vena cava filter is not fixed, easy displacement and inclination after implant into body.
Therefore, need to provide a kind of vena cava filter, make its adherent property better, to solve displacement and the turning problem of filter, thus the effectiveness of filter emboli can be improved.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of retrievable vena cava filter with good adherent property.
For solving the problems of the technologies described above, the present invention adopts following technical proposals:
A kind of retrievable vena cava filter with good adherent property, comprise the net tubular support and the seizure pawl be arranged in described support and support bar that adopt medical metal wire braiding, described support has the sieve bottom outwardly forming arc-shaped, described seizure pawl is that taper is radially formed to some medical metal wire of the oblique extension of periphery by from the vertex of a cone, described support bar comprises main support rod and is connected the some branches strut of the other end to the oblique extension of periphery with one end with main support rod, the other end of described branch strut is bending arc-shaped and is positioned at the outside of described support, the vertex of a cone of described seizure pawl and one end of main support rod are all fixedly installed on the bottom centre of described support, described main support rod is positioned at the central axis place of described support, the outside of the bottom centre of described support is provided with recovering hook.After adopting said structure, the end in bending arc-shaped of branch's strut contacts the effect can playing mooring anchor with blood vessel, and can not scratch blood vessel wall, and can also do small adjustment according to the internal diameter of blood vessel improves its adherent property simultaneously.
Preferably, described recovering hook is barb shape when can avoid recovery, blood vessel wall being caused to scuffing.
Preferably, described branch strut comprises the first branch's strut be connected with one end of described main support rod respectively and the second branch's strut be connected with the other end of described main support rod, described first branch's strut is two medical metal wire, and described second branch's strut is two medical metal wire.Branch's strut also can play preliminary filtration, and arranges each 2 branch's struts up and down, can avoid the inclination of vena cava filter.
Preferably, described seizure pawl is made up of with 60 degree, interval angle 6 medical metal wire.Catch the effect that pawl can play secondary filter.
Preferably, the material of described support, seizure pawl and support bar is Nickel-titanium alloy for medical purpose.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 illustrates structural representation of the present invention.
Fig. 2 illustrates the partial enlarged drawing of sub-support boom end of the present invention.
Detailed description of the invention
In order to be illustrated more clearly in the present invention, below in conjunction with preferred embodiments and drawings, the present invention is described further.Parts similar in accompanying drawing represent with identical Reference numeral.It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive, should not limit the scope of the invention with this below.
As shown in Figure 1, a kind of retrievable vena cava filter with good adherent property, comprises the support 1 of the net tubular adopting the braiding of Nickel-titanium alloy for medical purpose silk and the seizure pawl 2 be arranged in support 1 and support bar 3.Support 1 has the sieve bottom 11 of the arc-shaped outwardly formed, catching pawl 2 is that taper is radially formed to 6 Nickel-titanium alloy for medical purpose silks of the oblique extension of periphery by from the vertex of a cone, angle between adjacent nitinol alloy wire is 60 degree, and the vertex of a cone catching pawl 2 is connected with the center of bottom 11.Support bar 3 is also positioned at support 1 central axis place and main support rod 31, the two first branch's struts 32 be connected with the center of bottom 11 and two second branch's struts 33 for Nickel-titanium alloy for medical purpose material comprises one, first branch's strut 32 is by laser weld one end at main support rod 31, second branch's strut 33 is by the other end of laser weld at main support rod 31, and first branch's strut 32 and second branch's strut 33 are all obliquely extended to the outside of support 1 to periphery.The lateral surface center of the bottom 11 of support 1 is also connected with and is provided with recovering hook 5, and recovering hook 5 is set to the shape of barb to avoid scratching blood vessel wall during recycling cavity vein filter.Support 1, catch pawl 2 and support bar 3 by together with laser weld, entangle recovering hook 5 with catcher during recycling cavity vein filter, filter is taken in delivery sheath and takes out.
As shown in Figure 2, the mooring anchor 34 that the free end of first branch's strut 32 and second branch's strut 33 is bent to form arc-shaped makes it be subjected to displacement and to tilt to fix vena cava filter, this free end contacts with blood vessel, and the shape of its smooth arc-shaped can be avoided scratching blood vessel and the shape of arc-shaped is also convenient to fine setting to adapt to vessel diameter.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give exhaustive to all embodiments, every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (5)
1. one kind has the retrievable vena cava filter of good adherent property, it is characterized in that, comprise the net tubular support and the seizure pawl be arranged in described support and support bar that adopt medical metal wire braiding, described support has the sieve bottom outwardly forming arc-shaped, described seizure pawl is that taper is radially formed to some medical metal wire of the oblique extension of periphery by from the vertex of a cone, described support bar comprises main support rod and is connected the some branches strut of the other end to the oblique extension of periphery with one end with main support rod, the other end of described branch strut is bending arc-shaped and is positioned at the outside of described support, the vertex of a cone of described seizure pawl and one end of main support rod are all fixedly installed on the bottom centre of described support, described main support rod is positioned at the central axis place of described support, the outside of the bottom centre of described support is provided with recovering hook.
2. vena cava filter according to claim 1, is characterized in that, described recovering hook is barb shape when can avoid recovery, blood vessel wall being caused to scuffing.
3. vena cava filter according to claim 1, it is characterized in that, described branch strut comprises the first branch's strut be connected with one end of described main support rod respectively and the second branch's strut be connected with the other end of described main support rod, described first branch's strut is two medical metal wire, and described second branch's strut is two medical metal wire.
4. vena cava filter according to claim 1, is characterized in that, described seizure pawl is made up of with 60 degree, interval angle 6 medical metal wire.
5. vena cava filter according to claim 1, is characterized in that, the material of described support, seizure pawl and support bar is Nickel-titanium alloy for medical purpose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753551.XA CN105193521B (en) | 2015-11-09 | 2015-11-09 | A kind of retrievable vena cava filter with good adherence quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510753551.XA CN105193521B (en) | 2015-11-09 | 2015-11-09 | A kind of retrievable vena cava filter with good adherence quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105193521A true CN105193521A (en) | 2015-12-30 |
| CN105193521B CN105193521B (en) | 2018-06-12 |
Family
ID=54941745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510753551.XA Active CN105193521B (en) | 2015-11-09 | 2015-11-09 | A kind of retrievable vena cava filter with good adherence quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105193521B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105943197A (en) * | 2016-04-29 | 2016-09-21 | 湖南埃普特医疗器械有限公司 | Vena cava filter |
| CN107137160A (en) * | 2017-05-08 | 2017-09-08 | 杭州唯强医疗科技有限公司 | Prevent the two-way controlled release filter of displacement |
| CN107174375A (en) * | 2017-05-09 | 2017-09-19 | 杭州唯强医疗科技有限公司 | Adherent cage type filter can be reduced |
| CN107260234A (en) * | 2017-06-16 | 2017-10-20 | 上海形状记忆合金材料有限公司 | Weave degradable plugging device |
| WO2018120414A1 (en) * | 2016-12-26 | 2018-07-05 | 杭州唯强医疗科技有限公司 | Filter |
| WO2019000513A1 (en) * | 2017-06-28 | 2019-01-03 | 上海宏普医疗器械有限公司 | Semi-closed double-supporting recyclable type vena cava filter |
| CN111839806A (en) * | 2020-07-31 | 2020-10-30 | 上海心玮医疗科技有限公司 | High-compliance plug protector and filter screen manufacturing method thereof |
| CN113331987A (en) * | 2016-04-28 | 2021-09-03 | 深圳市科奕顿生物医疗科技有限公司 | Inferior vena cava filter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3429850A1 (en) * | 1984-05-12 | 1986-02-20 | Ing. Walter Hengst GmbH & Co KG, 4400 Münster | Improved blood filter for insertion into veins |
| US4643184A (en) * | 1982-09-29 | 1987-02-17 | Mobin Uddin Kazi | Embolus trap |
| WO2000016846A1 (en) * | 1998-09-24 | 2000-03-30 | Scimed Life Systems, Inc. | Retrieval devices for vena cava filter |
| CN2569770Y (en) * | 2002-09-28 | 2003-09-03 | 维科医疗器械(苏州)有限公司 | Recoverable thrombus filter |
| CN2635045Y (en) * | 2003-07-10 | 2004-08-25 | 戴玲 | Caval vein filter |
| CN102160826A (en) * | 2011-05-11 | 2011-08-24 | 北京航空航天大学 | Vena cava filter |
| CN203468794U (en) * | 2013-09-25 | 2014-03-12 | 傅强 | Vena cava filter with degradable part |
| CN103815984A (en) * | 2014-03-11 | 2014-05-28 | 科塞尔医疗科技（苏州）有限公司 | Thrombus filter and release system thereof |
| CN203841850U (en) * | 2014-03-31 | 2014-09-24 | 孙媛 | Withdrawable inferior vena cava filter |
-
2015
- 2015-11-09 CN CN201510753551.XA patent/CN105193521B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643184A (en) * | 1982-09-29 | 1987-02-17 | Mobin Uddin Kazi | Embolus trap |
| DE3429850A1 (en) * | 1984-05-12 | 1986-02-20 | Ing. Walter Hengst GmbH & Co KG, 4400 Münster | Improved blood filter for insertion into veins |
| WO2000016846A1 (en) * | 1998-09-24 | 2000-03-30 | Scimed Life Systems, Inc. | Retrieval devices for vena cava filter |
| CN2569770Y (en) * | 2002-09-28 | 2003-09-03 | 维科医疗器械(苏州)有限公司 | Recoverable thrombus filter |
| CN2635045Y (en) * | 2003-07-10 | 2004-08-25 | 戴玲 | Caval vein filter |
| CN102160826A (en) * | 2011-05-11 | 2011-08-24 | 北京航空航天大学 | Vena cava filter |
| CN203468794U (en) * | 2013-09-25 | 2014-03-12 | 傅强 | Vena cava filter with degradable part |
| CN103815984A (en) * | 2014-03-11 | 2014-05-28 | 科塞尔医疗科技（苏州）有限公司 | Thrombus filter and release system thereof |
| CN203841850U (en) * | 2014-03-31 | 2014-09-24 | 孙媛 | Withdrawable inferior vena cava filter |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331987A (en) * | 2016-04-28 | 2021-09-03 | 深圳市科奕顿生物医疗科技有限公司 | Inferior vena cava filter |
| CN105943197A (en) * | 2016-04-29 | 2016-09-21 | 湖南埃普特医疗器械有限公司 | Vena cava filter |
| WO2018120414A1 (en) * | 2016-12-26 | 2018-07-05 | 杭州唯强医疗科技有限公司 | Filter |
| CN107137160A (en) * | 2017-05-08 | 2017-09-08 | 杭州唯强医疗科技有限公司 | Prevent the two-way controlled release filter of displacement |
| CN107137160B (en) * | 2017-05-08 | 2021-06-11 | 杭州唯强医疗科技有限公司 | Bidirectional controllable release filter for preventing displacement |
| CN107174375A (en) * | 2017-05-09 | 2017-09-19 | 杭州唯强医疗科技有限公司 | Adherent cage type filter can be reduced |
| CN107174375B (en) * | 2017-05-09 | 2021-01-19 | 杭州唯强医疗科技有限公司 | Cage filter capable of reducing wall sticking |
| CN107260234A (en) * | 2017-06-16 | 2017-10-20 | 上海形状记忆合金材料有限公司 | Weave degradable plugging device |
| WO2019000513A1 (en) * | 2017-06-28 | 2019-01-03 | 上海宏普医疗器械有限公司 | Semi-closed double-supporting recyclable type vena cava filter |
| CN111839806A (en) * | 2020-07-31 | 2020-10-30 | 上海心玮医疗科技有限公司 | High-compliance plug protector and filter screen manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105193521B (en) | 2018-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105193521A (en) | Recoverable vena cava filter with good attachment | |
| US10098723B2 (en) | Non-entangling vena cava filter | |
| JP4918636B2 (en) | Retrievable vena cava filter with minimal damage in a folded configuration | |
| CN203841850U (en) | Withdrawable inferior vena cava filter | |
| CN106308974A (en) | Filter | |
| CN109157304A (en) | A kind of grumeleuse collection apparatus for from blood vessel removal blocking grumeleuse | |
| CN109310492B (en) | Vena cava filter with self-centering | |
| CN106901869B (en) | Venous filter | |
| US20170128185A1 (en) | Visual stabilizer on anchor legs of vena cava filter | |
| CN107307921A (en) | The vena cava filter of two-way controlled release | |
| CN206761794U (en) | Filter | |
| CN205107973U (en) | Recoverable medicine vena cave filter of scribbling that adherence nature is good | |
| CN206630733U (en) | Filter | |
| CN108403254B (en) | Novel recoverable vena cava filter | |
| CN107137160B (en) | Bidirectional controllable release filter for preventing displacement | |
| CN207575293U (en) | The vena cava filter of two-way controlled release | |
| WO2018121114A1 (en) | Filter for implanting into blood vessel | |
| CN104434340A (en) | Vena cava filter | |
| CN108992202A (en) | A kind of not damaged retrievable vena cava filter | |
| CN108272531A (en) | A kind of ultrashort type bilayer vena cava filter | |
| CN209332372U (en) | Vena cava filter | |
| CN207545263U (en) | Prevent the two-way controlled release filter of displacement | |
| CN105596115B (en) | Vena cava filter | |
| CN219579135U (en) | Recyclable inferior vena cava filter | |
| CN108013951A (en) | Filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 430074 first floor, building B-12, high tech medical equipment Park, No. 818, Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee after: BAIWEI (WUHAN) MEDICAL TECHNOLOGY CO.,LTD. Address before: 430070 Wuhan high tech medical instrument Park, No. 818, Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Patentee before: BAIWEI (WUHAN) MEDICAL TECHNOLOGY CO.,LTD. |
|
| CP03 | Change of name, title or address |