METHOD AND ASSEMBLY FOR DISTAL EMBOLIC PROTECTION
First Claim
1. A method for providing distal embolic protection during cardiovascular surgery. the method comprising:
- creating an incision in the at or near the apex of a patient'"'"'s heart;
collapsibly introducing a distal embolic protection assembly into the apex of the heart,said distal embolic protection assembly comprisinga sleeve having a sleeve lumen with a stop latch matching groove;
an actuating member having proximal and distal ends, wherein the actuating member is movably disposed within the sleeve lumen; and
a filter assembly coupled to the distal end of the actuating member, the filter assembly comprising a porous bag having an open proximal end, a collapsible and expandable frame comprising a stent made of a shape memory alloy coupled to the open proximal end of the bag;
wherein the actuating member may be pulled in a proximal direction to compress and retract the frame within the lumen of the sleeve and retain the frame in a collapsed state and wherein the actuating member may be pushed in a distal direction out of the lumen to a deployed expanded state; and
further wherein the stent comprises a proximal collapsed end that remains within the sleeve lumen;
a stop latch protruding from and biased in a distal direction the stop latch adapted to mate with the stop latch matching groove when the stent is expanded to a deployed condition;
an expanded distal end that is coupled to and supports the open proximal end of the porous bag; and
longitudinal arms joining the proximal collapsed end and the expanded distal end, the longitudinal arms being biased to expand radially to a deployed state;
advancing the sleeve through the apex of the heart and to a target location downstream of an area in which valve repair or replacement surgery is to be performed;
positioning the sleeve at or near the target location; and
deploying the filter assembly by removing the frame from the lumen of the catheter at the target location.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and assemblies are described for capturing embolic material in a blood vessel or other body cavity during cardiovascular or valve replacement and repair surgery, wherein access is provided through the apical area of the patient'"'"'s heart. The distal embolic protection assembly generally comprises a sleeve having a lumen, an actuating member having proximal and distal ends, wherein the actuating member is movably disposed within the lumen, and a filter assembly coupled to the distal end of the actuating member. The filter assembly generally comprises a porous bag having an open proximal end, a collapsible and expandable frame that is coupled to the open proximal end of the porous bag, and at least one support spine disposed at least a part of the longitudinal axis of the porous bag. The porous bag is configured such that it permits blood to perfuse freely through while capturing embolic material and other debris.
-
Citations
19 Claims
-
1. A method for providing distal embolic protection during cardiovascular surgery. the method comprising:
-
creating an incision in the at or near the apex of a patient'"'"'s heart; collapsibly introducing a distal embolic protection assembly into the apex of the heart, said distal embolic protection assembly comprising a sleeve having a sleeve lumen with a stop latch matching groove; an actuating member having proximal and distal ends, wherein the actuating member is movably disposed within the sleeve lumen; and a filter assembly coupled to the distal end of the actuating member, the filter assembly comprising a porous bag having an open proximal end, a collapsible and expandable frame comprising a stent made of a shape memory alloy coupled to the open proximal end of the bag; wherein the actuating member may be pulled in a proximal direction to compress and retract the frame within the lumen of the sleeve and retain the frame in a collapsed state and wherein the actuating member may be pushed in a distal direction out of the lumen to a deployed expanded state; and further wherein the stent comprises a proximal collapsed end that remains within the sleeve lumen;
a stop latch protruding from and biased in a distal direction the stop latch adapted to mate with the stop latch matching groove when the stent is expanded to a deployed condition;
an expanded distal end that is coupled to and supports the open proximal end of the porous bag; and
longitudinal arms joining the proximal collapsed end and the expanded distal end, the longitudinal arms being biased to expand radially to a deployed state;advancing the sleeve through the apex of the heart and to a target location downstream of an area in which valve repair or replacement surgery is to be performed; positioning the sleeve at or near the target location; and deploying the filter assembly by removing the frame from the lumen of the catheter at the target location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
Specification