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US 9,603,990 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.
Claims32
A pump system comprising:
- a pump having an inflow cassette receptacle and an outflow cassette receptacle therein, each of the inflow cassette receptacle and the outflow cassette receptacle having a rotary motor rotating a wheel, the pump having a plurality of individually actionable pressing members;
- an inflow cassette configured to be inserted into the inflow cassette receptacle of the pump, the inflow cassette comprising:
- an inflow cassette housing having an inflow internal flow path;
- inflow peristaltic tubing connected to the inflow cassette housing;
- an input tube fluidly connected to the inflow internal flow path and being configured to provide a washing fluid to the inflow cassette housing;
- and
- an inflow tube fluidly connected to the inflow internal flow path and being configured to provide the washing fluid to a patient;
- an outflow cassette configured to be inserted into the outflow cassette receptacle of the pump, the outflow cassette comprising:
- an outflow cassette housing having an outflow internal flow path;
- outflow peristaltic tubing connected to the outflow cassette housing;
- a plurality of suction tubes fluidly connected to the outflow internal flow path;
- and
- a waste tube fluidly connected to the outflow internal flow path;
- the wheel of the inflow cassette receptacle engaging the inflow peristaltic tubing when the inflow cassette is inserted into the inflow cassette receptacle of the pump, rotation of the wheel of the inflow cassette receptacle by the rotary motor of the inflow cassette receptacle causing the washing fluid to be pushed through the inflow cassette from the input tube to the inflow tube;
- the wheel of the outflow cassette receptacle engaging the outflow peristaltic tubing when the outflow cassette is inserted into the outflow cassette receptacle of the pump, rotation of the wheel of the outflow cassette receptacle by the rotary motor of the outflow cassette receptacle causing the waste fluid to be pushed through the outflow cassette from the plurality of suction tubes to the waste tube;
- the inflow cassette housing has a damping flexible membrane covering a damping region of the inflow internal flow path, with the damping flexible membrane being configured to dampen pressure pulsations in the washing fluid passing through the damping region;
- and
- wherein the plurality of individually actionable pressing members can each be individually actuated to pinch one of the plurality of suction tubes to at least partially prevent fluid flow through the one of the plurality of suction tubes.
15 more elements
A pump assembly comprising:
- a pump housing having a cassette receptacle therein, the cassette receptacle having a rotary motor rotating a wheel, the pump housing having a plurality of individually actionable pressing members;
- 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;
- a plurality of suction tubes fluidly connected to the ingress path section, with the ingress path section being fluidly located between the peristaltic tubing and the plurality of suction tubes;
- and
- a waste tube fluidly connected to the egress path section and being configured to provide a fluid to a waste receptacle, with the egress path section being fluidly located between the waste tube and the peristaltic tubing;
- and
- 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 plurality of suction tubes to the input tube;
- wherein the plurality of individually actionable pressing members can each be individually actuated to pinch one of the plurality of suction tubes to at least partially prevent fluid flow through the one of the plurality of suction tubes.
8 more elements
An inflow 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 housing has a damping flexible membrane covering a damping region of the egress path section, with the damping flexible membrane being configured to dampen pressure pulsations in the fluid passing through the damping region.
3 more elements
A pump assembly comprising:
- a pump housing having an inflow cassette receptacle therein, the inflow cassette receptacle having a rotary motor rotating a wheel;
- and
- an inflow cassette configured to be inserted into the inflow cassette receptacle of the pump housing, the inflow 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 inflow cassette is inserted into the inflow cassette receptacle of the pump housing, rotation of the wheel by the rotary motor causing the fluid to be pushed through the inflow cassette from the input tube to the inflow tube;
- the cassette housing has a damping flexible membrane covering a damping region of the egress path section, with the damping flexible membrane being configured to dampen pressure pulsations in the fluid passing through the damping region.
7 more elements
Dependencies are inferred from the claim text.