Atherectomy device with a positive pump means

Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue

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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.

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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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