Apparatus and method for inducing emergency hypothermia

• US 7,231,771 B2
• Filed: 05/26/2005
• Issued: 06/19/2007
• Est. Priority Date: 05/26/2004
• Status: Expired due to Fees

• Current Assignee: Ardiem Medical Incorporated
• Original Assignee: Ardiem Medical Incorporated
• Inventors: Yaffe, Lyn J., McMurry, Alan D.
• Primary Examiner(s): Ali; Mohammad M.
• Application Number:
  US11/139,035
• Publication Number:
  US 20050274118A1
• Time in Patent Office: 754 Days
• Field of Search: 62/32, 62/36, 62/36.2, 62/37, 621/29, 623/71, 623/242, 624/577, 624/579
• US Class Current: 62/3.6
• CPC Class Codes: F25B 21/02 using Peltier effect; using Nernst-Ettinghausen effect
• CPC Class Codes: F25B 2321/0251 by a gas
• CPC Class Codes: F25D 11/00 Self-contained movable devices, e.g. domestic refrigerators
• CPC Class Codes: F25D 17/06 by forced circulation
• CPC Class Codes: F25D 2331/801 Bags
• CPC Class Codes: F25D 2400/12 Portable refrigerators
• CPC Class Codes: F25D 2400/36 Visual displays
• CPC Class Codes: F25D 2700/12 Sensors measuring the inside temperature

Abstract

A thermoelectric cooler for maintaining intravenous (IV) solution within a temperature range of 1° C. to 4° C. for inducing rapid, emergency, point-of-injury, mild-to-moderate hypothermia. The thermoelectric cooler includes a substantially rectangular insulated container with a door extending in a vertical plane on the forward facing container wall and pivoting on a horizontal hinge located on the bottom edge of the door. The container is cooled by a thermoelectric module mounted between two heat exchangers and electrically powered fan assemblies. An electronic control unit controls the thermoelectric cooling module to maintain the interior of the insulated container and the IV solution within the set temperature range. The thermoelectric cooler has an exterior display panel with warning lights to visually communicate to the user if the interior temperature is in or out of range.

Claims

1. A thermoelectric cooler for maintaining intravenous solution, or other appropriate fluid, within a set temperature range for the specific purpose of inducing rapid, point-of-injury, mild-to-moderate hypothermia, comprising:

an insulated container comprising a storage compartment having two generally parallel end walls, generally parallel top and bottom walls, and a back wall, each of the walls and a door having internally oriented and externally oriented surfaces, the top, bottom, and end walls having front edge surfaces, the storage compartment having an opening in proximity to the front, and a generally rectangular door having at least one horizontally positioned hinge which pivotally attaches the bottom edge of the door to the bottom front edge of the storage compartment, the door in the closed position sealing the opening at the front of the storage compartment, and the storage compartment and the door in the closed position together defining an interior volume of the thermoelectric cooler;

a thermoelectric cooling device for cooling the interior volume of the insulated container, having a cooling element mounted between interior and exterior heat exchangers, each with an associated electrically powered fan;

an electronic control unit with an associated temperature sensor, for detecting and maintaining the temperature of the interior volume within a set temperature range;

a display panel positioned on the insulated container, for enabling the user to control the operation of the cooling device, having an on-off power switch for selectively powering the cooling device, a warning light to indicate when power is on, a warning light to indicate when the temperature of the interior volume is within the set temperature range, and a warning light to indicate when the temperature of the interior volume is outside temperature range; and

a connector jack positioned on the insulated container with an associated power cord to provide electrical power to the thermoelectric cooler by connection to a standard electrical outlet.

2. The thermoelectric cooler as recited in claim 1, wherein the thermoelectric cooling device is positioned within one of the end walls of the insulated container, having one heat exchanger and fan combination disposed in the interior volume and the second heat exchanger and fan combination disposed to the exterior of the insulated container.

3. The thermoelectric cooler as recited in claim 2, wherein the insulated container is substantially rectangular, having two end walls, a top and bottom wall, a back wall, and a substantially rectangular opening in proximity to the front, wherein the two end walls, the top and bottom walls, the back wall, and the door, define the interior volume of the thermoelectric cooler, and wherein each of the walls and the door has an externally oriented surface facing onto the exterior of the thermoelectric cooler, and an internally oriented surface facing onto the interior of the thermoelectric cooler.

4. The thermoelectric cooler as recited in claim 3, wherein the display panel is positioned upon an externally oriented surface of one of the walls.

5. The thermoelectric cooler as recited in claim 4, wherein the externally oriented surfaces of the two end walls of the insulated container each have a handle attached thereunto, for enabling the user to easily transport the thermoelectric cooler between locations.

6. The thermoelectric cooler as recited in claim 5, wherein the bottom edge of the door is pivotally attached to the bottom edge of the insulated container by at least one horizontally positioned hinge.

7. The thermoelectric cooler as recited in claim 6, wherein the cooling device is a Peltier effect active cooling element.

8. The thermoelectric cooler as recited in claim 6, wherein power is provided by a standard 110 volt AC wall outlet.