Method for closing tissue wounds using radiative energy beams

Details Method for closing tissue wounds using radiative energy beams Method for closing tissue wounds using radiative energy beams

1989-07-14

1991-03-26

Coven, Edward M.

Surgery

Truss

Pad

128397, 128DIG22, 606 3, 606 12, 606 40, A61N 506, A61B 1736

Patent

active

050020510

ABSTRACT:
The method and apparatus of the invention use a beam of laser emitted optical energy to effect wound closure and reconstruction of biological tissue. In response to input as to tissue type and thickness, a computer determines the output power, exposure time and spot diameter of the emitted beam to control the application of optical energy to produce thermal heating of biological tissue to a degree suitable for denaturing the tissue proteins such that the collagenous elements of the tissue form a "biological glue" to seal immediately and/or to reconstruct the tissue being heated. In a given embodiment, the computer directly controls output power of the laser by regulating the laser's input current, and limits exposure time by deactivating a shutter mechanism when the determined time is reached. Beam diameter is manually set in response to a displayed value for a sliding scale that controls the working distance between the end of a fiber optic beam guide and the tissue site.

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patent: 4266549 (1981-05-01), Kimura
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patent: 4539987 (1985-09-01), Nath et al.
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Jain, Surgery, vol. 85, No. 6, Jun. 1979, "Repair of Small Blood Vessels with Nd:YAG Laser: A Preliminary Report", pp. 604-687.

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