Patent ID: 9039727
Filing Date: 2015-05-26
Classification: A61B,A61F

Abstract:
1. Apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising: a guide wire having a proximal end and a distal end, the guide wire defining a uniform cross-sectional dimension transverse in relation to a longitudinal axis of the guide wire; a stop configured to receive the guide wire, the stop being positioned at a fixed location on the guide wire to define a proximal end region of the guidewire proximal of the stop and a distal end region of the guide wire distal of the stop; a capture ring disposed for translation on the proximal end region of the guide wire, translation of the capture ring along the guide wire being limited in a proximal direction and in a distal direction, the stop limiting translation of the capture ring in the distal direction; and a self-expanding filter sac having distal and proximal ends, the proximal end being coupled to the capture ring, the filter sac being expandable from a delivery configuration to a deployed configuration, the distal end of the filter sac being mounted on the distal end region of the guide wire when the filter sac is in the delivery configuration and when the filter sac is in the deployed configuration, the stop being positioned between the proximal and distal ends of the filter sac; wherein, when the filter sac is deployed in the vessel, rotation or limited translation of the guide wire relative to the capture ring does not displace the filter sac.