US PATENT SUBCLASS 600 / 159
.~.~.~ With valve construction or valve control means

Current as of: June, 1999
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600 /   HD   SURGERY

101  DF  ENDOSCOPE {29}
153  DF  .~ Having auxiliary channel {3}
156  DF  .~.~ Fluid channel (e.g., suction, irrigation, aspiration) {3}
159.~.~.~ With valve construction or valve control means

DEFINITION

Classification: 600/159

Valve construction or valve control means:

(under subclass 156) Subject matter wherein the passage of fluids through the fluid channel is regulated by a finger-operable movable control element disposed on the proximal portion of the endoscope used to open and close the entrance to the fluid channel.