Surgery – Respiratory method or device – Ozone or ion generation
Patent
1979-09-28
1981-11-10
Cohen, Lee S.
Surgery
Respiratory method or device
Ozone or ion generation
433100, A61M 100, A61C 102
Patent
active
042992214
ABSTRACT:
An irrigation-suction handpiece assembly, for dental and surgical use at an operating site, includes a handle containing longitudinally extending, side-by-side suction and irrigant passageways respectively connectible to a source of subatmospheric pressure (i.e., a vacuum source) and an irrigant fluid source. An irrigant valve is actuable for alternately opening and blocking flow of irrigant from the irrigant source through the irrigant passageway. An air pressure conduit includes a third passageway in the handle and connectible to an air pressure source which is not atmospheric pressure and not influenced by pressure changes in the suction passageway. This air pressure source is either a further subatmospheric pressure source or a compressed gas source. The third passageway has a relief opening in the handle selectively openable or closable by the hand of the operator for effecting a change in the pressure within the third passageway. The irrigant valve has a control input coupled with the air pressure conduit and third passageway and responsive to such change in air pressure therein for shifting between its open and blocking states to thereby control the flow of irrigant fluid to the operating site.
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Insalaco Robert W.
Phillips Earl G.
Cohen Lee S.
Kruter J. L.
Stryker Corporation
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