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Filter

A filter and filter rod technology, applied in the field of medical devices, can solve the problems of filter piercing through the blood vessel wall, inferior vena cava obstruction, filter displacement, etc., and achieve the effects of improving stability, reducing wrapping degree, and delaying fracture time

Pending Publication Date: 2021-11-12
SHANGHAI BLUEVASCULAR MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that when the recyclable filter is converted into a permanent filter, there are problems such as filter breakage, filter piercing through the blood vessel wall, filter displacement or inferior vena cava obstruction, etc.

Method used

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Effect test

Embodiment 1

[0054] A filter provided by the invention includes a filtering component, a supporting component and a degradable restricting component. Please refer to figure 1 , which schematically shows the first structure diagram of the filter provided by an embodiment of the present invention, the filter includes two filter components 100 , a support component 200 and a degradable constraint component 300 . One end of the filter component 100 is connected to the support component 200, and the other end is connected to the constraint component 300, the filter component 100 is arranged coaxially with the support component 200, and the constraint component 300 gathers the filter component 100 with an opening 103 therein.

[0055] In this embodiment, the constraining member 300 does not gather the end of the filter member 100 to close, but reserves the opening 103 at the end of the filter member 100, thereby avoiding the formation of thrombus or fibrous wrapping at the end of the filter mem...

Embodiment 2

[0060] Please refer to image 3 , which schematically shows the second structure diagram of the filter provided by an embodiment of the present invention, the filter components include a first filter component 101 and a second filter component 102, and the support component 200 has a relatively proximal end and the distal end, the first filter component 101 is connected to the proximal end of the support component 200, and the second filter component 102 is connected to the distal end of the support component 200; the constraint component 300 includes The first restricting part 301 and the second restricting part 302, the first restricting part 301 gathers the first filter part 101 and makes the end of the first filter part 101 have a first opening, the second restricting part 302 gathers the second filter element 102 and makes the end of the second filter element 102 have a second opening 103'. In addition, the end of the second filter part 102 away from the support part is ...

Embodiment 3

[0066] In this embodiment, a plurality of support bodies 500 can also be arranged outside the filter, as shown in Fig. 5- Figure 7 As shown, the support body 500 extends outward from the outside of the filter and abuts against the inner wall of the blood vessel, so that the inner wall of the blood vessel is only in contact with the support body 500 and not with the main part of the filter (including the support member 200 contact with the first filter component 101 and the second filter component 102), so as to reduce the wrapping degree of the filter by angiogenesis, thereby prolonging the recovery time window of the filter. At the same time, by providing the support body 500, the contact area with the inner wall of the blood vessel is reduced, so it is also convenient to take out the filter.

[0067] Specifically, a plurality of support bodies 500 are connected to the support member 200, and each support body 500 includes an extension section 501 and a support section 502 c...

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Abstract

The invention provides a filter, which comprises a filtering part, a supporting part and a degradable restraining part; one end of the filtering part is connected with the supporting part, and the other end of the filtering part is connected with the restraining part; the filtering part and the supporting part are coaxially arranged; and the restraining part closes the end part of the filtering part and enables the filtering part to be provided with an opening. The filter provided by the invention can solve the problems that when an existing recoverable filter is converted into a permanent filter, the filter is broken, the filter punctures the blood vessel wall, the filter is displaced or the inferior vena cava is blocked and the like.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a filter. Background technique [0002] Venous thromboembolism (VTE) is a common clinical disease with high morbidity and mortality. VTE includes deep vein thrombosis (DVT) and pulmonary embolism (PE). DVT often occurs in the veins of the lower extremities, while PE is mainly caused by the thrombus falling off into the pulmonary artery after thrombosis in the venous system or right heart, and is the main cause of morbidity and death. [0003] Anticoagulant therapy has always been the gold standard in VTE treatment, the purpose is to prevent thrombosis, prevent PE and restore the patency of embolized veins. When anticoagulation is contraindicated or anticoagulation has to be terminated due to bleeding complications, the implantation of a Vena Cava Filter (VCF) can effectively intercept the dislodged thrombus and prevent fatal pulmonary embolism. Early vena cava filt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/01
CPCA61F2/01A61F2002/016A61F2002/018
Inventor 朱清朱永锋张兆夺屠春霖
Owner SHANGHAI BLUEVASCULAR MEDTECH CO LTD
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