FILTER ELEMENT WITH RETRACTABLE GUIDEWIRE TIP
0 Assignments
0 Petitions
Accused Products
Abstract
A medical guidewire assembly comprises a guidewire having a flexible tip. A medical device such as a collapsible filter for use as an embolic protection device is mounted on the guidewire. The filter is advanced through a body lumen with the guidewire tip extending distally. A variable thickness guidewire (having a recess or thinner segment between thicker segments) can be employed. At a first location the filter is advanced relative to the tip to a location which is distally advanced from the first location. Placement of the filter in an optimal distal location is thereby achieved.
-
Citations
23 Claims
- 1. (canceled)
-
2. (canceled)
-
3. An embolic protection device for filtering embolic material, debris or clots released during interventional procedures, comprising:
-
a variable thickness guidewire comprising a thinner segment bordered by thicker segments; and a filtering device movable between an expanded configuration and a collapsed configuration, for deploying beyond an area of blockage or clot in a cerebral arterial blood vessel, the filtering device comprising an expansion assembly, a filter membrane, and a mobile attachment point, wherein the filtering device is rotatably mounted on the variable thickness guidewire via the mobile attachment point, such that the filtering device may be rotationally and longitudinally displaced relative to and independently of the guidewire. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification