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US 9,889,246 B2Granted
Cassette for a surgical fluid management pump system
AssigneeStryker Corporation
InventorBrady Woolford
Life of this patent
Estimating the term…
Abstract
A pump system including a pump, an inflow cassette and an outflow cassette. The inflow cassette has a damping flexible membrane covering a damping region configured to dampen pressure pulsations in washing fluid passing through the damping region. The pump has a plurality of individually actionable pressing members that can each be individually actuated to pinch one of a plurality of suction tubes of the outflow cassette to at least partially prevent fluid flow through the one of the plurality of the suction tubes.
Claims24
A cassette for a pump comprising:
- a housing having an internal flow path including an ingress path section and an egress path section;
- peristaltic tubing connected to the housing and being fluidly located between the ingress path section and the egress path section;
- an input tube fluidly connected to the ingress path section and being configured to provide a fluid to the housing, with the ingress path section being fluidly located between the input tube and the peristaltic tubing;
- and
- an inflow tube fluidly connected to the egress path section and being configured to provide the fluid to a patient, with the egress path section being fluidly located between the ingress path section and the inflow tube;
- the internal flow path including a pressure sensing region in the egress path section;
- and
- the housing including a pressure sensing flexible membrane being fluidly connected to the internal flow path through a slot in a wall of the housing.
5 more elements
A pump assembly comprising:
- a pump housing having a cassette receptacle therein, the cassette receptacle having a rotary motor rotating a wheel;
- and
- a cassette configured to be inserted into the cassette receptacle of the pump housing, the cassette comprising:
- a cassette housing having an internal flow path including an ingress path section and an egress path section;
- peristaltic tubing connected to the cassette housing and being fluidly located between the ingress path section and the egress path section;
- an input tube fluidly connected to the ingress path section and being configured to provide a fluid to the cassette housing, with the ingress path section being fluidly located between the input tube and the peristaltic tubing;
- and
- an inflow tube fluidly connected to the egress path section and being configured to provide the fluid to a patient, with the egress path section being fluidly located between the ingress path section and the inflow tube;
- the wheel engaging the peristaltic tubing when the cassette is inserted into the cassette receptacle of the pump housing, rotation of the wheel by the rotary motor causing the fluid to be pushed through the cassette from the input tube to the inflow tube;
- the internal flow path including a pressure sensing region in the egress path section;
- and
- the housing including a pressure sensing flexible membrane being fluidly connected to the internal flow path through a slot in a wall of the cassette housing.
9 more elements
Dependencies are inferred from the claim text.