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US 12,214,222 B2Granted
Ultrasonic surgical instrument with cooling system
AssigneeCovidien LP
InventorsRobert B. Stoddard, Eric R. Larson
Life of this patent
Estimating the term…
Abstract
An ultrasonic surgical instrument including a blade that treats tissue and a fluid control system to cool the blade by pumping cooling fluid through the blade. The blade defines a blade lumen in fluid contact with an inflow and return conduit of the fluid control system. The fluid control system may further include a fluid reservoir holding the cooling fluid and a pump. The pump is configured to deliver the fluid from the fluid reservoir, through the inflow conduit and the blade lumen, and into return conduit.
Claims20
A surgical instrument, comprising:
- a housing;
- an elongated tube extending distally from the housing and defining an outer surface;
- a tool assembly extending distally from the elongated tube, the tool assembly defining a lumen having a closed distal portion and an opening in communication with a proximal portion of the lumen;
- an inflow conduit;
- and
- a return conduit,
- wherein the inflow and return conduits extend longitudinally along at least a portion of the outer surface of the elongated tube and into fluid communication with the opening to enable the inflow and return of fluid to and from, respectively, the lumen of the tool assembly.
4 more elements
A surgical instrument, comprising:
- a housing;
- an elongated tube extending distally from the housing, the elongated tube defining an interior, an outer surface, and an aperture extending through the outer surface into the interior;
- a tool assembly extending distally from the elongated tube, the tool assembly defining a lumen;
- and
- at least one of an inflow tube or a return tube,
- wherein a first portion of the at least one of the inflow tube or the return tube extends longitudinally along at least a portion of the outer surface of the elongated tube, wherein a second portion of the at least one of the inflow tube or the return tube extends through the aperture into the interior of the elongated tube, and wherein the at least one of the inflow tube or the return tube is disposed in fluid communication with the lumen to enable at least one of inflow or return of fluid to or from, respectively, the lumen of the tool assembly.
3 more elements
A surgical instrument, comprising:
- a housing;
- an elongated tube extending distally from the housing, the elongated tube defining an interior and an outer surface;
- an ultrasonic waveguide extending through the interior of the elongated tube, the ultrasonic waveguide defining an ultrasonic blade at a distal end thereof, the ultrasonic blade extending distally from the elongated tube, wherein the ultrasonic waveguide defines a lumen extending into the ultrasonic blade;
- and
- at least one of an inflow tube or a return tube, wherein the at least one of the inflow tube or the return tube extends distally along at least a portion of the outer surface of the elongated tube, and wherein a distal end of the at least one of the inflow tube or the return tube is disposed in fluid communication with the lumen.
2 more elements
Dependencies are inferred from the claim text.