Pump cassettes with positioning feature and infusion pump systems
First Claim
Patent Images
1. A pump cassette comprising:
- a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, two opposing edge sections, and an interface-facing surface;
a controllable fluid pathway defined at least in part by the base portion and the compliant membrane;
a first positioning feature on the frame portion and arranged substantially orthogonal to a general plane of the interface-facing surface, the first positioning feature configured to mechanically interact with a first corresponding positioning feature on a surface of a cassette recess of an infusion pump for positioning of the pump cassette within the cassette recess;
a second positioning feature on the frame portion, laterally separated from the first positioning feature, arranged substantially orthogonal to the general plane of the interface-facing surface, and configured to mechanically interact with a second corresponding positioning feature on the surface of the cassette recess of the infusion pump for positioning of the pump cassette within the cassette recess, wherein the second positioning feature comprises a protrusion on the frame portion within which a portion of the controllable fluid pathway is disposed; and
a slider coupled to the two opposing edge sections and longitudinally articulable with respect to the rigid body.
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Accused Products
Abstract
Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, two opposing edge sections, and an interface-facing surface. The rigid body may include a positioning feature arranged substantially orthogonal to a general plane of the interface-facing surface. The pump cassette may include a slider coupled to the two opposing edge sections and longitudinally articulable with respect to the rigid body.
42 Citations
18 Claims
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1. A pump cassette comprising:
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a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, two opposing edge sections, and an interface-facing surface; a controllable fluid pathway defined at least in part by the base portion and the compliant membrane; a first positioning feature on the frame portion and arranged substantially orthogonal to a general plane of the interface-facing surface, the first positioning feature configured to mechanically interact with a first corresponding positioning feature on a surface of a cassette recess of an infusion pump for positioning of the pump cassette within the cassette recess; a second positioning feature on the frame portion, laterally separated from the first positioning feature, arranged substantially orthogonal to the general plane of the interface-facing surface, and configured to mechanically interact with a second corresponding positioning feature on the surface of the cassette recess of the infusion pump for positioning of the pump cassette within the cassette recess, wherein the second positioning feature comprises a protrusion on the frame portion within which a portion of the controllable fluid pathway is disposed; and a slider coupled to the two opposing edge sections and longitudinally articulable with respect to the rigid body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A pump cassette comprising:
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a rigid body comprising a compliant membrane, two opposing edge sections, and an interface-facing surface, wherein the rigid body comprises a controllable fluid pathway including a pump chamber, the controllable fluid pathway defined in part by the compliant membrane and extending from an inlet port to an outlet port, wherein the rigid body includes a positioning feature on the frame portion and arranged substantially orthogonal to a general plane of the interface-facing surface, the positioning feature configured to mechanically interact with a first corresponding positioning feature on a surface of a cassette recess of an infusion pump for positioning of the pump cassette within the cassette recess; a pump assembly including a pump drive mechanism operably accessible from the interface-facing surface, wherein the pump drive mechanism is longitudinally articulable with respect to the rigid body; and a slider coupled to the two opposing edge sections and longitudinally articulable with respect to the rigid body. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A pump cassette comprising:
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a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, two opposing edge sections, and an interface-facing surface; a controllable fluid pathway defined at least in part by the base portion and the compliant membrane; a first positioning feature on the frame portion and arranged substantially orthogonal to a general plane of the interface-facing surface, the first positioning feature configured to mechanically interact with a first corresponding positioning feature on a surface of a cassette recess of an infusion pump for positioning of the pump cassette within the cassette recess; and a pump assembly including a pump drive mechanism operably accessible from the interface-facing surface, wherein the pump drive mechanism is longitudinally articulable with respect to the rigid body. - View Dependent Claims (17, 18)
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Specification