Minnesota Mining and Manufacturing Company

Harpreet Kaur

Thomas D Egan

Ulf B Dunberger

Larry H Dodge

Kenneth E Merte

The present invention provides a tubing set in cassette form and an irrigation system employing the cassette and tubing set for use in endoscopic procedures. The tubing set includes a generally arcuate cassette which is inserted into the pump housing to effect a change in tubing sets between procedures. A valve assembly and flattened tubing segment are preferably used to provide pressure control/relief in the tubing set/irrigation system. Also provided in combination with the preferred cassette is a fitting for coupling a pressure monitoring line with pressure monitoring equipment in the irrigation system.

Irrigation system with tubing cassette

An irrigation system including a pump that regulates the supply of fluid to an endoscopic surgical site, and a tubing set for supplying the fluid. The tubing set comprises an inflow line for supplying fluid to the surgical site, and an outflow line for draining fluid from the surgical site. At least one of the inflow and outflow lines includes an expandable compliant tubing segment that expands to accommodate changes in the rate of fluid flow through the surgical site to reduce variations in fluid pressure in the surgical site. The fluid volume within the compliant tubing segment increases in response to increasing fluid pressure within the compliant tubing segment. The system is particularly designed for use in small joint arthroscopy (e.g., of the wrist) where the fluid volume in the surgical site is relatively small.

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Woodbury, MN, United States of America

Harpreet Kaur