Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1993-06-25
1994-09-13
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
606171, A61B 1720, A61B 1732
Patent
active
053464699
ABSTRACT:
A handpiece for preventing the visual field of an endoscope from being disturbed by irrigation liquid, and which performs safely and reliably selective separation of biological tissue such as a blood vessel or the like by ultrasonic vibration, in operation under a visual field of an endoscope which is restricted in operation has a tip section of 5/4 or 7/4 times wavelength, a forward end curved in an arcuate form, and a tip cover provided with a detachable tip top cover at a forward end, which is semi-transparent or transparent, and which has an inclined surface, to prevent irrigation liquid from scattering. The tip cover of an ultrasonic surgical knife is provided with an auxiliary cavity for a laser probe, and a spatula-like projection at the forward end of the cover. The main cavity and the auxiliary cavity for the tip are closed by an O-ring gas-tight packing or a gas-tight closure to prevent pneumoperitoneum gas within an abdomen cavity from leaking.
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Idemoto Morito
Ikeda Tadaaki
Cermak Adam J.
Sumitomo Bakelite Company Limited
Yasko John D.
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