Atherectomy catheter

Details Atherectomy catheter Atherectomy catheter

1988-01-11

1989-07-25

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

With means for cutting, scarifying, or vibrating tissue

128305, 418 48, A61B 1732

Patent

active

048509574

ABSTRACT:
An atherectomy catheter is disclosed comprising an outer catheter tube and an inner catheter tube centrally received within the outer catheter tube and defining an annular passage therebetween. A hydraulic motor is housed within the inner catheter tube and includes a cutting element connected to the drive shaft of the hydraulic motor. A guide wire extends in advance of the cutter element for guiding the catheter through an artery or the like. Pressurized fluid drives the hydraulic motor for rotating the cutter element. Fluid and tissue debris is removed from the site of plaque removal via the annular passage.

REFERENCES:
patent: 3260318 (1966-07-01), Neilson et al.
patent: 3760447 (1973-09-01), Vivion
patent: 3930765 (1976-01-01), Waite
patent: 4273128 (1981-06-01), Lary
patent: 4443165 (1984-04-01), Chanton
patent: 4445509 (1984-05-01), Auth
patent: 4492276 (1985-01-01), Kamp
patent: 4631052 (1986-12-01), Kensey
patent: 4637785 (1987-01-01), Backstrom
patent: 4650466 (1987-03-01), Luther
patent: 4729763 (1988-03-01), Henrie
Plaque attack: Cutters and Borers Headed for Coronaries, May-Jun. 1987, PTCA, vol. II, Issue 3.
New Downhole Motor Develops High Torque for Increased Pentetration Rates Jun. 1982, Ocean Industry.

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