Rotary valve for a disposable infusion set
First Claim
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1. A pump cassette for coupling with a pump device, the pump cassette comprising:
- a fluid lumen adapted for passage of an infusion fluid toward a patient, the fluid lumen formed of a monolithic tube having only a first and second opening, the first opening positioned at a first end of the cassette and the second opening positioned at a second, opposed end of the cassette;
a rotary valve assembly that can be actuated to regulate fluid flow through the fluid lumen; and
a frame coupled to the fluid lumen and the valve assembly, the frame adapted to be inserted into a seat of a pump device, wherein the frame forms a flat surface that extends along a level plane and that is juxtaposed with the tube along the pumping segment of the tube so as to provide a platen relative to the fluid lumen, the frame configured to be inserted into the seat only when aligned in a predetermined orientation relative to the seat.
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Abstract
A pump cassette includes fluid lumen adapted for passage of an infusion fluid toward a patient. A rotary valve assembly can be actuated to regulate fluid flow through the fluid lumen and a frame is coupled to the fluid lumen and the valve assembly. The frame is adapted to be inserted into a seat of a pump device, wherein the frame provides a platen relative to the fluid lumen. The frame is configured to be inserted into the seat only when aligned in a predetermined orientation relative to the seat.
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Citations
25 Claims
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1. A pump cassette for coupling with a pump device, the pump cassette comprising:
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a fluid lumen adapted for passage of an infusion fluid toward a patient, the fluid lumen formed of a monolithic tube having only a first and second opening, the first opening positioned at a first end of the cassette and the second opening positioned at a second, opposed end of the cassette; a rotary valve assembly that can be actuated to regulate fluid flow through the fluid lumen; and a frame coupled to the fluid lumen and the valve assembly, the frame adapted to be inserted into a seat of a pump device, wherein the frame forms a flat surface that extends along a level plane and that is juxtaposed with the tube along the pumping segment of the tube so as to provide a platen relative to the fluid lumen, the frame configured to be inserted into the seat only when aligned in a predetermined orientation relative to the seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 18, 20, 22, 24)
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13. A pump device, comprising:
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a pumping mechanism; a housing defining a seat configured to receive a pump cassette having a fluid lumen that can be acted upon by the pumping mechanism so as to pump fluid through the fluid lumen of the pump cassette; a pump cassette for coupling with a pump device, the pump cassette comprising; a fluid lumen adapted for passage of an infusion fluid toward a patient, the fluid lumen formed of a monolithic tube having only a first and second opening, the first opening positioned at a first end of the cassette and the second opening positioned at a second, opposed end of the cassette; a rotary valve assembly that can be actuated to regulate fluid flow through the fluid lumen; and a frame coupled to the fluid lumen and the valve assembly, the frame adapted to be inserted into a seat of a pump device, wherein the frame forms a flat surface that extends along a level plane and that is juxtaposed with the tube along the pumping segment of the tube so as to provide a platen relative to the fluid lumen. - View Dependent Claims (14, 15, 16, 17, 19, 21, 23, 25)
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Specification