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US 12,427,055 B2Granted
Patient heat exchange system with two and only two fluid loops
AssigneeZoll Circulation, Inc.
InventorsJeremy Thomas Dabrowiak, Craig Wendell Pendry, Christoph Matthias Pistor
Life of this patent
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Abstract
A heat exchange system for exchanging heat with working fluid from an intravascular heat exchange catheter or an external heat exchange pad includes a working fluid that circulates between the catheter or pad and a fluid cassette, and a refrigerant system that flows against the outer sides of cold plates between which the cassette is disposed.
Claims18
A heat exchange system for exchanging heat with working fluid from an intravascular heat exchange catheter or an external heat exchange pad, comprising:
- a working fluid circuit configured for circulating working fluid between a cassette and the intravascular heat exchange catheter or the external heat exchange pad;
- and
- a refrigerant circuit configured for circulating refrigerant between a compressor and first and second heat exchange plates such that the refrigerant flows from the compressor to the first heat exchange plate and from the first heat exchange plate to the second heat exchange plate via a bottom coupler, and the refrigerant flows back to the compressor via the bottom coupler,
- wherein the first and second heat exchange plates define a cassette slot between the first and second heat exchange plates for receiving the cassette,
- wherein the refrigerant circuit including the first and second heat exchange plates is configured to directly exchange heat with the working fluid circuit so that the heat exchange system includes only two fluid loops.
2 more elements
A system comprising:
- two heat exchange plates defining a slot between them configured for receiving a working fluid cassette through which working fluid flows to and from an intravascular catheter in a working fluid circuit wherein the two heat exchange plates communicate with a source of a refrigerant,
- wherein the two heat exchange plates abut each other along side walls thereof and respective cassette frame receptacles are vertically elongated and located immediately inboard of the side walls and are formed in each plate with the slot extending between the side walls,
- wherein the two heat exchange plates are a part of a refrigerant circuit configured to directly exchange heat with a working fluid circuit in a system with only two fluid loops, and
- wherein the two heat exchange plates include a bottom coupler or a channel through a side wall such that the refrigerant flows from a compressor to one of the two heat exchange plates and then to the other one of the two heat exchange plates through the bottom coupler or the channel through the side wall, and the refrigerant flows back to the compressor through the bottom coupler or the channel through the side wall.
1 more element
Dependencies are inferred from the claim text.