Embolic filter system

Abstract

To provide a satisfactory system.SOLUTION: Various aspects of the present disclosure are directed toward an embolic filter system. The embolic filter system generally includes a filter and an elongate element. In some examples, the elongate element extends to a position distal to a proximal end of the filter and operates to protect against medical devices that become entangled with the filter. In some examples, the elongate element is flexible and compliant and operates with a hemostatic seal to provide the hemostatic seal within the lumen of the elongate element while maintaining the lumen as a working lumen through which a medical device can be passed.SELECTED DRAWING: Figure 1B

Claims

1. An elongate element having a proximal end and a distal end and a lumen extending therethrough; a filter portion coupled to a distal end of the elongate element; 1. An embolic filter system comprising: wherein the elongate element includes a first structural support and a first membrane disposed about the first structural support, the elongate element having sufficient structural integrity to support being advanced within a delivery sheath; and the filter portion includes a second structural support and a second membrane disposed about the second structural support, a portion of the second membrane including a plurality of perforations configured to filter embolic debris from blood entering the filter portion; The first membrane and the second membrane are the same. Embolic filter system.

2. The embolic filter system of claim 1, wherein the elongated element is a self-expanding wire braid, the filter portion is blood permeable, and the plurality of perforations have an average size of 100 microns.

3. An embolic filter system as described in claim 1 or 2, wherein the elongated element is blood-impermeable, the second membrane of the filter portion is blood-impermeable, and a plurality of perforations are formed in the second membrane of the filter portion operable to allow blood to flow through the second membrane.

4. An embolic filter system as described in any one of claims 1 to 3, wherein the filter portion has a distal end and a proximal end, and both the distal end and the proximal end of the filter portion are open so as to facilitate the blood flowing into the filter portion at the distal end of the filter portion and out of the filter portion at the proximal end of the filter portion.

5. An embolic filter system as described in any one of claims 1 to 4, wherein the first structural support and the second structural support are the same.

6. An embolic filter system as described in any one of claims 1 to 5, wherein the elongated element includes a stop mechanism integrated into the elongated element and disposed at the proximal end of the elongated element to control how far the elongated element can be advanced within the vasculature.

7. The embolic filter system of claim 6, wherein the stopping mechanism facilitates capturing and withdrawing the elongated element and the filter from the vasculature.

8. An embolic filter system as described in any one of claims 1 to 7, wherein a distal force applied to the proximal end of the elongated element is operable to cause distal translation of the elongated element and the filter portion relative to the delivery sheath.

9. An embolic filter system as described in any one of claims 1 to 8, wherein the elongated element includes a valve that operates to control blood flow through the lumen of the elongated element during a clinical procedure.

10. An embolic filter system as described in any one of claims 1 to 9, wherein the first membrane and the second membrane comprise ePTFE.

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