Intravenous fluid warming system

• US 10,022,507 B2
• Filed: 02/24/2014
• Issued: 07/17/2018
• Est. Priority Date: 03/21/2005
• Status: Active Grant

• Current Assignee: Vital Signs Incorporated (Becton, Dickinson & Co)
• Original Assignee: Vital Signs Incorporated (Becton, Dickinson & Co)
• Inventors: Cassidy, David E.
• Primary Examiner(s): Hoang, Tu B
• Assistant Examiner(s): ROSARIO-APONTE, ALBA T
• Application Number:
  US14/188,473
• Publication Number:
  US 20140169775A1
• Time in Patent Office: 1,604 Days
• Field of Search: 392470, 392465, 392484, 392494, 392479, 392485, 604113, 604114, 604111, 604 9301, 165253, 165287-293
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media

Abstract

A fluid warming device may include a housing comprising a main body, a heat exchange body receiving compartment, and a cover movably coupled to the main body between an open position and a closed position; a heater assembly disposed within the main body and having a heat conducting surface disposed proximate the heat exchange body receiving compartment; and a heat exchange body removably disposable in the heat exchange body receiving compartment of the main body and having an input port and an output port to couple the heat exchange body to tubing to flow a fluid to be warmed through the heat exchange body. In another aspect, a fluid warming system increases or decreases power to a heater assembly to adjust the fluid temperature to ensure that the fluid is at an appropriate temperature when it reaches the patient.

Claims

1. A fluid warming device, comprising:

a heat exchange body configured to conduct fluid from an input port to an output port;

a housing having a main body with a recess that is configured to removably receive the heat exchange body, the housing further comprising a pair of axially slidable covers having a closed position in which the pair of axially slidable covers retain the heat exchange body within the recess, wherein, in the closed position, open portions of the pair of axially slidable covers provide a view of a fluid flow through a mid portion of the heat exchange body, and wherein the axially slidable covers are slidable, along longitudinal tracks on the main body, outwardly in opposite directions to an open position for receiving and removal of the heat exchange body from the housing;

a heater assembly, having a temperature sensor, disposed within the housing, the heater assembly configured to transfer heat to the heat exchange body; and

a controller configured to adjust a heater power of the heater.

2. The fluid warming device of claim 1, further comprising a fluid line connected to the output port.

3. The fluid warming device of claim 2, wherein the housing further comprises a hollow portion around the output port, such that the heat exchange body is removable without disconnecting the fluid line.

4. The fluid warming device of claim 1, wherein at least one of the slidable covers includes a hollow portion for exposing at least the output port.

5. The fluid warming device of claim 1, wherein at least one of the slidable covers includes gripping teeth.

6. A fluid warming device, comprising:

a heat exchange body configured to conduct fluid therethrough in one direction from an input port to an output port;

a housing configured to removably receive the heat exchange body;

a heater assembly disposed within the housing, the heater assembly configured to transfer heat to the heat exchange body;

a first axially slidable cover and a second axially slidable cover configured to hold the heat exchange body against the heater assembly when the first axially slidable cover and the second axially slidable cover are in a closed position in which an opening of each of the first axially slidable cover and the second axially slidable cover provides a view of a fluid flow through a mid portion of the heat exchange body, and wherein the axially slidable covers are slidable, along longitudinal tracks on the housing, outwardly in opposite directions to an open position for receiving and removal of the heat exchange body from the housing; and

a controller that adjusts a heater power of the heater assembly.

7. The fluid warming device of claim 6, wherein the first slidable cover includes a first hollow portion for exposing the input port and the second slidable cover includes a second hollow portion for exposing the output port.

8. The fluid warming device of claim 6, wherein the first slidable cover includes a first face and the second slidable cover includes a second face, the first face touching the second face when the first and second slidable covers are fully closed.

9. The fluid warming device of claim 8, wherein the first and second faces include gripping teeth.

10. The fluid warming device of claim 6, further comprising a battery.

11. The fluid warming device of claim 10, wherein the heater assembly is powered by the battery when the first and second slidable covers are fully closed.

12. The fluid warming device of claim 10, further comprising a visual indicator for indicating a status of the battery.

13. The fluid warming device of claim 6, further comprising a proximity sensor configured to determine positions of the first and second slidable covers.