Patent ID: 6572630
Filing Date: 2003-06-03
Classification: A61B

Abstract:
An atherectomy device from removing plaque from the interior of a lumen upon travel of the device therethrough, comprising:a. a rotatable head having nose, central and tail portions; i. said nose portion being bulbously outwardly curved and defining a forward extremity of said head for initial passage within said lumen, of circular shape at juncture with said central portion, with the center of the circular shape coincident with the longitudinal axis of said head; ii. said tail portion being separated from said nose portion by said central portion, said tail portion defining a rear extremity of said head as said head portion passes through said lumen, said tail portion being of rectangular transverse cross-section and tapering from a relatively smaller maximum diameter at juncture with said nose portion to a relatively larger maximum diameter at a rear extremity of said rotatable head; iii. said central portion transitionally tapering from and connecting said circular nose portion to said rectangular transverse cross-section tail portion, and central portion being of larger transverse cross-sectional area at juncture with said tail portion than at said juncture with said nose portion; b. said head having a plurality of longitudinally extending cutting grooves formed therein commencing proximate juncture of said circular nose portion and said central portion and extending rearwardly therefrom.