Fluid management system
First Claim
Patent Images
1. A disposable plastic pump cassette for use in an endoscopic surgical procedure, comprising a housing;
- an inflow pump means in said housing for supplying liquid under pressure to a body cavity during the endoscopic procedure, and conduit means within said housing for supplying liquid to and delivering liquid under pressure from said inflow pump means; and
an outflow suction pump means in said housing for aspirating liquid from a body cavity during the endoscopic procedure, and conduit means within said housing for supplying liquid to and delivering liquid from said outflow pump means.
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Abstract
Apparatus for supplying liquid to a body cavity during an endoscopic procedure includes a feedback loop-controlled liquid supply device inherently capable of supplying liquid at a substantially constant pressure substantially independent of the flow rate of liquid delivered by the liquid supply device within a relatively wide range of flow rate. Also disclosed are a disposable plastic pump cassette having an inflow pump in a housing, and an operative cannula. The surgical procedure is performed with continuous control over the body cavity pressure, regardless of the outflow flow rate.
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Citations
5 Claims
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1. A disposable plastic pump cassette for use in an endoscopic surgical procedure, comprising a housing;
- an inflow pump means in said housing for supplying liquid under pressure to a body cavity during the endoscopic procedure, and conduit means within said housing for supplying liquid to and delivering liquid under pressure from said inflow pump means; and
an outflow suction pump means in said housing for aspirating liquid from a body cavity during the endoscopic procedure, and conduit means within said housing for supplying liquid to and delivering liquid from said outflow pump means. - View Dependent Claims (2, 3, 4, 5)
- an inflow pump means in said housing for supplying liquid under pressure to a body cavity during the endoscopic procedure, and conduit means within said housing for supplying liquid to and delivering liquid under pressure from said inflow pump means; and
Specification