Method and apparatus for heating solutions within intravenous lines to desired temperatures during infusion
First Claim
1. A warming device for heating intravenous fluids to desired temperatures comprising:
- a housing member including a top surface and a housing member interior;
a fluid cassette removably placeable on said housing member top surface to receive fluid from an intravenous fluid line, wherein said fluid cassette is removably connectable to said intravenous fluid line and includes an elongated portion of intravenous fluid line tubing with tubing sections secured to each to form a looped fluid flow path through said cassette;
a cover member positionable relative to said housing member to selectively cover and provide access to said housing member top surface to enable insertion and removal of said fluid cassette within said device;
a plurality of heating elements to heat said fluid cassette, wherein at least one of said heating elements is disposed within said housing member interior and at least one other of said heating elements includes a looped configuration and is disposed on said cover member to be coincident said looped fluid flow path, and wherein said heating elements are positioned to facilitate insertion of said cassette between at least two of the plurality of heating elements;
at least one temperature sensor disposed within said housing member interior to measure at least one temperature; and
a controller coupled to said at least one temperature sensor and said heating elements to control said heating elements in accordance with said at least one measured temperature.
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Accused Products
Abstract
An IV line temperature controlled warming device includes a housing and a fluid cassette or cartridge that receives fluid from an IV line and includes intravenous line tubing arranged in a preformed configuration. The configuration includes tubing sections arranged in generally circular and concentric portions and a central serpentine tubing section that basically reverses fluid flow and facilitates flow in opposing directions within adjacent tubing sections. The fluid cassette is retained within the device on a base plate partially disposed within a device housing interior, while a housing cover is selectively opened and closed to permit access to the base plate. The base plate includes a heater plate disposed thereon, while the cover and heater plate each include heating elements to apply heat to opposing surfaces of the tubing cassette. The heating elements are controlled by a controller in response to measured temperatures of the heater plate and fluid.
392 Citations
49 Claims
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1. A warming device for heating intravenous fluids to desired temperatures comprising:
- a housing member including a top surface and a housing member interior;
a fluid cassette removably placeable on said housing member top surface to receive fluid from an intravenous fluid line, wherein said fluid cassette is removably connectable to said intravenous fluid line and includes an elongated portion of intravenous fluid line tubing with tubing sections secured to each to form a looped fluid flow path through said cassette;
a cover member positionable relative to said housing member to selectively cover and provide access to said housing member top surface to enable insertion and removal of said fluid cassette within said device;
a plurality of heating elements to heat said fluid cassette, wherein at least one of said heating elements is disposed within said housing member interior and at least one other of said heating elements includes a looped configuration and is disposed on said cover member to be coincident said looped fluid flow path, and wherein said heating elements are positioned to facilitate insertion of said cassette between at least two of the plurality of heating elements;
at least one temperature sensor disposed within said housing member interior to measure at least one temperature; and
a controller coupled to said at least one temperature sensor and said heating elements to control said heating elements in accordance with said at least one measured temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- a housing member including a top surface and a housing member interior;
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19. In a warming device including a housing member, a fluid cassette removably placeable on a housing member top surface, a cover member positionable relative to said housing member, a plurality of heating elements, at least one temperature sensor and a controller, a method of heating intravenous fluids to desired temperatures comprising:
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(a) receiving fluid within said cassette from an intravenous fluid line, wherein said fluid cassette is removably connectable to said intravenous fluid line and said cover member selectively covers and provides access to said housing member top surface to enable insertion and removal of said fluid cassette within said device, wherein said fluid cassette is disposed within said warming device between at least two of said heating elements and includes an elongated portion of intravenous fluid line tubing with tubing sections secured to each other form a looped fluid flow path through said cassette; (b) heating said fluid cassette within said warming device via said heating elements, wherein at least one of said heating elements is disposed within a housing member interior and at least one other of said heating elements includes a looped configuration and is disposed on said cover member to be coincident said looped fluid flow path; (c) measuring at least one temperature; and (d) controlling said heating elements in accordance with said at least one measured temperature. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A warming device for heating intravenous fluids to desired temperatures comprising:
- a housing member including a top surface and a housing member interior;
fluid flow means removably placeable on said housing member top surface for receiving fluid from an intravenous fluid line, wherein said fluid flow means is removably connectable to said intravenous fluid line and includes an elongated portion of intravenous fluid line tubing with tubing sections secured to each other in said manipulated form to form a looped fluid flow path through said fluid flow means;
cover means positionable relative to said housing member for selectively covering and providing access to said housing member top surface to enable insertion and removal of said fluid flow means within said device;
a plurality of thermal means for heating said fluid flow means, wherein at least one of said thermal means is disposed within said housing member interior and at least one other of said thermal means includes a looped configuration and is disposed on said cover means to be coincident said looped fluid flow path, and wherein said thermal means are positioned to facilitate insertion of said fluid flow means between at least two of the plurality of thermal means;
temperature means within said housing member interior for measuring at least one temperature; and
control means coupled to said temperature means and said thermal means for controlling said thermal means in accordance with said at least one measured temperature. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
- a housing member including a top surface and a housing member interior;
Specification