Catheter system for controlled removal by radiant energy of biol

Details Catheter system for controlled removal by radiant energy of biol Catheter system for controlled removal by radiant energy of biol

1987-05-06

1989-04-04

Hindenburg, Max

Surgery

Truss

Pad

A61B 1736

Patent

active

048176010

ABSTRACT:
A catheter for delivering radiant energy, such as a laser beam, is used in a technique to controllably apply the radiant energy in a patient's body, such as in a blood vessel. The radiant energy is applied in a manner which erodes biological material and may be used to drill through vascular obstructions. The catheter emits the radiant energy from its distal end in a pattern which defines a relatively small working region in which the energy density level is sufficiently high to remove the biological material. The energy distribution is substantially uniform across the beam. Distally beyond the working region, the energy density of the beam decays sharply so that biological material beyond the working region is not removed.

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"Ultraviolet-Laser Ablation of Skin" Linsker et al. Archives of Dermatology.

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