Atherectomy catheter device
First Claim
1. An atherectomy catheter comprising elongated flexible tubular means having a longitudinal axis and a circumference for placement next to a lesion in a blood vessel, window means defining an opening of less than 360 degrees in said circumference of said elongated flexible tubular means for receiving said lesion, a flexible edge portion on said window means, flexible cutting edge means on said flexible edge portion for flexing with the curvature of said blood vessel and for excising said lesion which enters said window means, said elongated tubular means comprising a flexible helical coil member, said flexible cutting edge means comprising exposed adjacent severed ends of said flexible coil member, and a flexible casing on said flexible coil member for retaining said coil member in assembled relationship at said window means.
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Accused Products
Abstract
An atherectomy catheter device including a flexible casing, an elongated flexible tubular coil in the casing, a window extending axially in the flexible tubular coil and casing for placement in contiguous relationship to a lesion in a blood vessel, a cutting edge on the coil in the window, and an actuator having structure therein for both rotating and reciprocating the catheter to cause the cutting edge to excise the lesion from the blood vessel. The elongated tubular member may be a flexible corrugated member. An atherectomy catheter including a flexible casing, an elongated flexible tubular coil in the casing, a window extending axially in the flexible tubular coil and casing, a rotatable knife member in the flexible coil, and a drive for rotating and advancing the knife axially through the window.
249 Citations
18 Claims
- 1. An atherectomy catheter comprising elongated flexible tubular means having a longitudinal axis and a circumference for placement next to a lesion in a blood vessel, window means defining an opening of less than 360 degrees in said circumference of said elongated flexible tubular means for receiving said lesion, a flexible edge portion on said window means, flexible cutting edge means on said flexible edge portion for flexing with the curvature of said blood vessel and for excising said lesion which enters said window means, said elongated tubular means comprising a flexible helical coil member, said flexible cutting edge means comprising exposed adjacent severed ends of said flexible coil member, and a flexible casing on said flexible coil member for retaining said coil member in assembled relationship at said window means.
Specification