Patent ID: 6551341
Filing Date: 2003-04-22
Classification: A61F,A61L

Abstract:
A medical device for use in a body lumen, comprising:a tubular body formed from small diameter tubing; a plurality of struts formed from a large diameter tubing and disposed on the tubular body such that the struts project radially outward in an unconstrained state; wherein the large diameter tubing includes a cold formed nickel-titanium alloy, and the nickel-titanium alloy is in a martensitic phase only regardless of stress applied to the alloy, and wherein the tubular body has been heat treated and a hysteresis curve of the nickel-titanium alloy does not include a stress plateau; and a sheath at least partially enveloping the body and restraining the struts in a compressed state for delivery and retrieval of the device to and from the body lumen.