Medical devices/methods are described that include catheter systems for crossing total occlusions in vasculature. The catheter systems are for use with numerous guide wires to direct the wires from the extraluminal or subintimal space back into a blood vessel lumen after the wire has entered the subintimal space. The catheter systems comprise a catheter body having at least one lumen configured to track over a wire. An endpiece that includes at least one port in communication with the lumen couples to the distal region of the catheter body. A working element is configured to deploy through the port for delivery from a location within the extraluminal space to locations within the vessel true lumen when advanced distally through the port. A distal region of the catheter body assumes first or second configurations when the working element is retracted into the catheter body.

Title
Catheter system for crossing total occlusions in vasculature
Application Number
10/823416
Publication Number
20050171478
Application Date
April 12, 2004
Publication Date
August 4, 2005
Inventor
Erik Thai
Redwood City
CA, US
Rob Deckman
Redwood City
CA, US
Jason Kaiser
Redwood City
CA, US
Ben Clark
Redwood City
CA, US
Ray Betelia
Redwood City
CA, US
Kurt Sparks
Redwood City
CA, US
Matthew R Selmon
Redwood City
CA, US
Agent
Shemwell Gregory & Courtney
CA, US
IPC
A61M 05/178
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