Recanalization apparatus and devices for use therein and method

Details Recanalization apparatus and devices for use therein and method Recanalization apparatus and devices for use therein and method

1997-11-14

1999-08-17

Dawson, Glen

Surgery

Instruments

Blood vessel, duct or teat cutter, scrapper or abrader

606167, 606185, A61B 1722

Patent

active

059386711

ABSTRACT:
Recanalization apparatus for use in crossing a stenosis forming a total occlusion in a vessel formed by a vessel wall, the stenosis having a distal end cap which is convex facing in a proximal direction. The apparatus is comprised of an outer sheath formed of an elongate flexible tubular member having proximal and distal extremities and having a lumen extending from the proximal extremity to the distal extremity. An inner sheath is slidably mounted in the lumen of the outer sheath and is formed of a flexible elongate tubular member having proximal and distal extremities. The distal extremity has a sharpened tip. The inner sheath has a length so that when the sharpened tip is disposed distally of the distal extremity of the outer sheath, the proximal extremity extends proximally of the proximal extremity of the outer sheath. An imaging guide wire is slidably mounted in the lumen of the inner sheath and has proximal and distal extremities. A transducer is mounted on the distal extremity of the imaging guide wire. The he imaging guide wire has a length so that the transducer can extend beyond the distal extremity of the inner sheath with the proximal extremity extending proximally of the proximal extremity of the inner sheath.

REFERENCES:
patent: 5318576 (1994-06-01), Plassche et al.
patent: 5520189 (1996-05-01), Malinowski et al.
patent: 5531685 (1996-07-01), Hemmer et al.
patent: 5556406 (1996-09-01), Lary
patent: 5643298 (1997-07-01), Nordgren et al.
patent: 5681336 (1997-10-01), Clement et al.

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