Atherectomy device with a positive pump means

Details Atherectomy device with a positive pump means Atherectomy device with a positive pump means

1989-03-22

1990-09-18

Hafer, Robert A.

Surgery

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

With means for cutting, scarifying, or vibrating tissue

606159, A61B 1700

Patent

active

049574825

ABSTRACT:
An atherectomy system for cutting, ingesting and removing an obstruction from within a patient's artery, comprising a flexible guide-wire insertable into the artery, a flexible rotary-catheter rotatably disposed and slidable over the flexible guide-wire, a blade forming a distal end of the flexible rotary-catheter having teeth on its periphery which are bent inward, a continuous passage for ingesting the cut obstruction material between the flexible rotary-catheter and the flexible guide-wire, means at the proximal end of the flexible rotary-catheter for rotating it and positive displacement pump means connected to the continuous passage to pull the cut obstruction material proximally.

REFERENCES:
patent: 2505358 (1950-04-01), Gusberg et al.
patent: 3614953 (1971-10-01), Moss
patent: 3902498 (1975-09-01), Niederer
patent: 4020847 (1977-05-01), Clark, III
patent: 4627436 (1986-12-01), Leckrone
patent: 4672962 (1987-06-01), Hershenson
patent: 4700705 (1987-10-01), Kensey et al.
patent: 4754755 (1988-07-01), Husted
patent: 4844064 (1989-07-01), Thimsen et al.

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