Distal protection apparatus with improved wall apposition
First Claim
1. A vascular filtering device comprising:
- a compliant substantially enclosed filter membrane having a proximal opening;
a closure ring having a concentric though hole adapted to slidably engage with a guide wire; and
a primary supporting strut having a proximal terminal end, a distal terminal end, and a substantially circumferential intermediate portion between the terminal ends wherein the terminal ends are operatively attached to said closure ring and the circumferential intermediate portion of said supporting strut is operatively attached to the proximal opening of said filter membrane.
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Accused Products
Abstract
In accordance with the present invention, a distal protection and embolic material retrieval device with improved apposition to both large and small vessel walls of varying geometries for enhancing the filtering of embolic material during intravascular procedures while allowing for the passage of blood is provided. The device includes a filter basket designed to maximize apposition of the filtering portion to that of the vessel wall and may include struts which provide circumferential support to the filtering membrane and thereby minimizing or eliminating in-folding of the filter basket. Thin film materials may also be utilized for the filtering membrane of the filter basket. In addition one can incorporate biological and/or pharmaceutical agents in combination with the present invention.
138 Citations
33 Claims
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1. A vascular filtering device comprising:
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a compliant substantially enclosed filter membrane having a proximal opening;
a closure ring having a concentric though hole adapted to slidably engage with a guide wire; and
a primary supporting strut having a proximal terminal end, a distal terminal end, and a substantially circumferential intermediate portion between the terminal ends wherein the terminal ends are operatively attached to said closure ring and the circumferential intermediate portion of said supporting strut is operatively attached to the proximal opening of said filter membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for fabricating a filtering device comprising the steps of:
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a. providing a hollow tube;
b. removing material from said tube such that what remains are the proximal support ring and strut members each of which are integrally attached to each other being formed from the same tubular component. - View Dependent Claims (30, 31)
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32. A method for fabricating a filtering device comprising the steps of:
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a. providing elongated wire;
b. forming said elongated wire into strut loops; and
c. attaching said strut loops to a support collar. - View Dependent Claims (33)
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Specification