Intravenous fluid warming cassette with stiffening member, fluid container and key mechanism
First Claim
1. A cassette for conductively warming parenteral fluids in a warming unit with heater plates, at least one heater plate having at least one groove, the cassette comprising:
- a frame structure having a quadrilateral shape;
a flexible planar fluid container with a periphery, the fluid container received in the quadrilateral shape and joined along its periphery to the frame structure; and
a key mechanism including lands on the cassette adapted to slidably engage grooves in the heater plates;
a handle on the frame structure;
an opening in the handle; and
a bubble trap received in the opening.
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Accused Products
Abstract
A fluid warming cassette with a stiffening frame structure and a key mechanism is provided to support a parenteral fluid container. The fluid container is desirably thin to minimize heat exchange inefficiencies. The frame structure permits the thin fluid container to be inserted into the narrow space between fixed position warming plates of a warming unit. The frame structure has a quadrilateral shape with sides and ends. The fluid container is attached, at its periphery to the sides and ends of the frame structure, within the quadrilateral shape. The key mechanism prevents the cassette from being inserted upside down or backwards in a warming unit. Part of the frame structure may be formed into a handle to assist in both the insertion and removal of the cassette from a warming unit.
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Citations
20 Claims
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1. A cassette for conductively warming parenteral fluids in a warming unit with heater plates, at least one heater plate having at least one groove, the cassette comprising:
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a frame structure having a quadrilateral shape; a flexible planar fluid container with a periphery, the fluid container received in the quadrilateral shape and joined along its periphery to the frame structure; and a key mechanism including lands on the cassette adapted to slidably engage grooves in the heater plates; a handle on the frame structure; an opening in the handle; and a bubble trap received in the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification