Suction irrigator endoscope
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United States of America Patent
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Sep 14, 1993
Grant Date -
N/A
app pub date -
Jan 28, 1992
filing date -
Jan 28, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A surgical endoscope includes an elongated cannula having a distal end for insertion into the body of a patient, and a proximal end having a valve assembly mounted thereon to selectively and alternatively connect the cannula to a source of irrigation fluid, or to an aspirator. The valve assembly includes a pair of valve members adapted for manual operation one at a time to permit irrigation or suction fluid flow to a central flow chamber disposed at the proximal end of the cannula. The valve members are symmetrically mounted at opposite sides of the central flow chamber for movement between opened and closed positions without occluding the proximal end of the cannula. An instrument access port on the valve assembly at a position in-line with the cannula permits introduction of a surgical instrument through the central flow chamber and cannula, independently of the valve members and manipulation thereof.
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