DEVICE AND METHOD FOR TREATING VASCULAR OCCLUSION
A system and method for managing an occlusion, such as a blood clot, within a lumen or passageway of a patient. More particularly, a system and method for rapidly restoring blood flow through an occlusion including a self-expanding, tubular member through which blood may flow when in an expanded state. The tubular member has a structure configured to engage the occlusive material, thereby allowing for extraction of at least a portion of the occlusive material. The system may further employ a material extraction member that is deployed distally of the tubular member.
1 . An occlusion management system comprising:
a catheter;
a pusher; and
a tubular member reversibly restrained in a compressed state within a lumen of the catheter and radially expanded from the compressed state upon retraction of the catheter relative to the pusher.
2 . The system of claim 1 wherein a distal end of the pusher is attached to a proximal portion of the tubular member.
3 . The system of claim 1 wherein a diameter of the member is largest at a distal portion of the tubular member.
4 . The system of claim 1 wherein a distal portion of the tubular member is flared in a radially expanded state.
5 . The system of claim 1 wherein a distal portion of the tubular member is bulbous in a radially expanded state.
6 . The system of claim 1 further comprising an extraction member attached to a distal portion of the member.
7 . The system of claim 1 wherein a distal portion of the tubular member is everted toward a proximal portion of the member.
8 . The system of claim 1 further comprising a sheath having a lumen through which the catheter is advanced.
9 . The system of claim 1 further comprising a sheath having a lumen through which a proximal tubular member is advanced.
10 . The system of claim 1 wherein the catheter comprises an annular balloon near a distal end of the catheter.
11 . An occlusion management system comprising:
a catheter;
a pusher;
a tubular member attached to a distal end of the pusher; and
an extraction member extending distally of a distal end of the cylindrical member having a diameter larger than a diameter of the cylindrical member.
12 . The system of claim 11 wherein the extraction member is attached directly to the tubular member.
13 . The system of claim 1 further comprising a sheath having a lumen through which the catheter is advanced.
14 . The system of claim 1 further comprising a sheath having a lumen through which a proximal tubular member is advanced.
15 . A method for management of an occlusion in a lumen comprising the steps of:
creating a passage for fluid flow through occlusive material in a lumen of a patient;
engaging a portion of the occlusive material with at least a portion of a tubular member; and
extracting a portion of the occlusive material from the lumen of the patient.
16 . The method of claim 15 wherein the step of creating a passage for fluid flow through occlusive material in a lumen of a patient comprises expanding the tubular member.
17 . The method of claim 15 wherein the step of engaging a portion of the occlusive material with at least a portion of the tubular member comprises retracting a catheter relative to the tubular member.
18 . The method of claim 15 wherein the step of engaging a portion of the occlusive material with at least a portion of a tubular member comprises expanding the tubular member.
19 . The method of claim 15 wherein the step of extracting a portion of the occlusive material from the lumen of the patient comprises expanding an extraction member distally of the tubular member.
20 . The method of claim 15 wherein the step of extracting a portion of the occlusive material from the lumen of the patient comprises retracting the tubular member in to a catheter.