IV fluid warming system with detection of presence and alignment of cassette
First Claim
1. An intravenous (IV) fluid warming system comprising:
- a warming unit with an inlet slot;
a heat exchanger receivable in the warming unit inlet slot, the heat exchanger having a fluid inlet port and a fluid outlet port in fluid communication with an internal fluid pathway in the heat exchanger; and
a presence detector acting between the warming unit and the heat exchanger to sense the presence of the heat exchanger in the warming unit.
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Accused Products
Abstract
An intravenous (IV) fluid warming system with a removable heat exchanger includes a presence detector. The system is for warming an IV fluid before infusion into a body. The system includes a warming unit for warming the IV fluid and an inlet slot for receiving a heat exchanger, preferably embodied as a cassette . The heat exchanger is sized to fit into the inlet slot of the warming unit. The heat exchanger has a heat exchanger membrane with an internal fluid pathway that is in fluid communication with a fluid inlet port and a fluid outlet port. While the heat exchanger is in the warming unit, the IV fluid flows through the internal fluid pathway of the heat exchanger, warming the fluid. A heat exchanger presence detector is part of the warming system. The presence detector detects the presence of the heat exchanger when it is received in the warming unit. The presence detector enables the heating operation of the warming unit when the presence of the heat exchanger is sensed.
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Citations
40 Claims
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1. An intravenous (IV) fluid warming system comprising:
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a warming unit with an inlet slot;
a heat exchanger receivable in the warming unit inlet slot, the heat exchanger having a fluid inlet port and a fluid outlet port in fluid communication with an internal fluid pathway in the heat exchanger; and
a presence detector acting between the warming unit and the heat exchanger to sense the presence of the heat exchanger in the warming unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An intravenous (IV) fluid warming system comprising:
a warming unit with;
an enclosure having an inlet slot;
at least one heating element positioned in the enclosure;
a heat exchanger comprising;
a frame receivable to be received in the inlet slot, a heat exchanger membrane attached to the frame, the heat exchanger membrane having an internal fluid pathway;
a fluid inlet port near a first end of the internal fluid path;
a fluid outlet port near a second end of the internal fluid path; and
a presence detector acting between the heat exchanger and the warming unit. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of using an intravenous (IV) fluid warming system that includes a warming unit and a heat exchanger, the method comprising the steps of:
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inserting the heat exchanger into the inlet; and
providing an indication that the heat exchanger is received in the inlet. - View Dependent Claims (34, 35, 36)
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37. A heat exchanger for being received in a warming unit for being warmed therein, comprising:
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an IV fluid cassette with an internal fluid pathway; and
a presence indicator on the cassette. - View Dependent Claims (38, 39)
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40. A warming unit with an opening for receiving an IV fluid heat exchanger to be warmed by the warming unit, comprising:
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an enclosure;
a heat exchanger warming assembly in the enclosure; and
a heat exchanger presence detector circuit in the enclosure connected to the warming assembly.
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Specification