Method and apparatus for laser medical treatment

Details Method and apparatus for laser medical treatment Method and apparatus for laser medical treatment

1992-07-23

1994-03-29

Pellegrino, Stephen C.

Surgery

Instruments

Light application

128395, 128898, 606 16, A61B 1736

Patent

active

052980260

ABSTRACT:
A tumor or other condition within a patient is treated by the application of laser energy through multiple optical fibers, all of which are disposed within a general guiding or outer tube. The optical fibers extend to within the patient by way of a single burr hole. Specifically, each optical fiber is disposed within a corresponding inner tube and each inner tube is disposed within the outer tube and is movable with respect to the outer tube. Each of the inner tubes is flexible and has a permanent bend disposed therein. Each inner tube is placed within the patient by way of the outer tube with the inner tube in a retracted or high energy state. In the retracted or high energy state, each inner tube is bent into a position constrained by the outer tube. Upon the outer tube being positioned at the tumor or other treatment zone, relative movement between the inner tubes and the outer tube frees the inner tubes from being constrained in the high energy or retracted state. The inner tubes then resume their low energy or relaxed state. Since the optical fibers are within the inner tubes, the optical fibers then assume an orientation as determined by the relaxed state of the inner tubes. Laser energy can be supplied through the optical fibers to create a treatment zone much larger than would otherwise be available from a single burr hole.

REFERENCES:
patent: 4461284 (1984-07-01), Doi
patent: 4850351 (1989-07-01), Herman et al.
patent: 4862887 (1989-09-01), Weber et al.
"Lasers in Neurosurgery", Edited by R. V. Jeffreys, Cover page, Copyright page, pp. 48, 49, 288, 289.

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