Surgery – Respiratory method or device – Ozone or ion generation
Patent
1979-11-28
1982-04-13
Michell, Robert W.
Surgery
Respiratory method or device
Ozone or ion generation
433 95, A61M 100
Patent
active
043242430
ABSTRACT:
An apparatus and process for aspirating and evacuating a pneumatically operated surgical instrument, such as an intraocular vitrectomy unit having a reciprocating blade for severing unwanted intraocular tissues, is disclosed herein. The apparatus includes a collapsible conduit pneumatically connected to a receptacle for conducting an aspirating negative pressure to the surgical instrument and evacuating material received therefrom into the receptacle. A pneumatically operated clamping means functions both to terminate the application of negative pressure through the collapsible conduit and to eliminate residual negative pressure within the conduit between the blocked portion of the conduit and the surgical instrument. Positive coordination between the pneumatically powered surgical intrument and the aspiration and evacuation system is achieved by fluidly connecting both the instrument and the clamping means to the same power output, so that the aspiration and evacuation commences as the reciprocating blade of the surgical instrument cuts and ceases as the blade withdraws.
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"Lovac Power Drain" Cat. Cut Toledo, Ohio, 1929. _
Helfgott Gerald N.
Helfgott Maxwell A.
Kruter J. L.
Michell Robert W.
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