Thermal management system and method for medical devices

• US 10,034,975 B2
• Filed: 05/10/2017
• Issued: 07/31/2018
• Est. Priority Date: 11/11/2013
• Status: Active Grant

• Current Assignee: ICU Medical Incorporated
• Original Assignee: ICU Medical Incorporated
• Inventors: McLennan, Kevin P., Hoenninger, III, John C.
• Primary Examiner(s): Cruz, Dimary Lopez
• Assistant Examiner(s): Feng, Zhengfu
• Application Number:
  US15/592,059
• Publication Number:
  US 20170340809A1
• Time in Patent Office: 447 Days
• Field of Search: None
• CPC Class Codes: A61M 2205/3372 Temperature compensation
• CPC Class Codes: A61M 2209/082 Mounting brackets, arm supports for equipment
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61M 5/1415 Stands, brackets or the like for supporting infusion accessories
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: G06F 1/20 Cooling means
• CPC Class Codes: H05K 7/20 Modifications to facilitate cooling, ventilating, or heating
• CPC Class Codes: H05K 7/20436 Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing

Abstract

A medical device includes a housing, a power supply, a thermally conductive mounting clamp, a heat shield, and at least one fastener. The housing includes a handle. The power supply is disposed within the housing. The thermally conductive mounting clamp is attached to an outer surface of the housing. The heat shield is disposed within the housing adjacent to the power supply. The heat shield is disposed against at least one interior surface of the handle. The at least one fastener passes through at least one opening in the housing and is in thermally conductive contact with the thermally conductive mounting clamp. Heat generated by the power supply is configured to dissipate from the power supply, through the heat shield, through the at least one fastener, and into the thermally conductive mounting clamp.

Claims

1. A medical device comprising:

a housing comprising a handle, the handle defined at least partially by a horizontally elongated recess formed in an outer surface of the housing adjacent a top of the housing;

a power supply disposed within the housing;

a thermally conductive mounting clamp attached to the outer surface of the housing at a location remote from the handle recess;

a heat shield disposed within the housing adjacent to the power supply, the heat shield disposed against at least one interior surface of the handle; and

at least one fastener passing through at least one opening in the housing and in thermally conductive contact with the thermally conductive mounting clamp, wherein heat generated by the power supply is configured to dissipate from the power supply into the heat shield, the heat shield configured to conduct heat away from the handle into the at least one fastener, the heat passing from the at least one fastener into the thermally conductive mounting clamp.

2. The medical device of claim 1 further comprising an infusion pump supported by the housing.

3. The medical device of claim 1 wherein the heat shield is disposed apart from the power supply within the housing, and the heat generated by the power supply is configured to dissipate from the power supply to the heat shield through at least one of convection or radiation and from the heat shield, through the at least one fastener, and into the thermally conductive mounting clamp through conduction.

4. The medical device of claim 1 wherein the heat shield is curved.

5. The medical device of claim 1 wherein the heat shield comprises a U-shape.

6. The medical device of claim 1 wherein the heat shield is disposed against multiple interior surfaces of the handle.

7. The medical device of claim 1 further comprising an electrically insulating, thermally conductive bracket disposed against the heat shield within the housing, wherein heat generated by the power supply is configured to dissipate from the power supply, through the heat shield, through the electrically insulating, thermally conductive bracket, through the at least one fastener, and into the thermally conductive mounting clamp.

8. The medical device of claim 7 wherein the heat generated by the power supply is configured to dissipate from the power supply to the heat shield through at least one of convection or radiation and from the heat shield, through the electrically insulating, thermally conductive bracket, through the at least one fastener, and into the thermally conductive mounting clamp through conduction.

9. An infusion device for mounting to a pole comprising:

a housing comprising a handle, the handle defined at least partially by a horizontally elongated recess formed in an outer surface of the housing adjacent a top of the housing;

a thermally conductive mounting clamp attached to the outer surface of the housing and configured to attach to a pole;

an infusion pump disposed within the housing;

a power supply disposed within the housing;

a heat shield disposed within the housing adjacent to the power supply, the heat shield disposed against at least one interior surface of the handle; and

at least one fastener passing through at least one opening in the housing and in thermally conductive contact with the thermally conductive mounting clamp, wherein heat generated by the power supply is configured to dissipate from the power supply into the heat shield, the heat shield configured to conduct heat away from the handle into the at least one fastener, the heat passing from the at least one fastener into the thermally conductive mounting clamp.

10. The infusion device of claim 9 wherein the heat shield is disposed apart from the power supply within the housing, and the heat generated by the power supply is configured to dissipate from the power supply to the heat shield through at least one of convection or radiation and from the heat shield, through the at least one fastener, and into the thermally conductive mounting clamp through conduction.

11. The infusion device of claim 9 wherein the heat shield is curved.

12. The infusion device of claim 9 wherein the heat shield comprises a U-shape.

13. The infusion device of claim 9 further comprising an electrically insulating, thermally conductive bracket disposed against the heat shield within the housing, wherein heat generated by the power supply is configured to dissipate from the power supply, through the heat shield, through the electrically insulating, thermally conductive bracket, through the at least one fastener, and into the thermally conductive mounting clamp.

14. The infusion device of claim 13 wherein the heat generated by the power supply is configured to dissipate from the power supply to the heat shield through at least one of convection or radiation and from the heat shield, through the electrically insulating, thermally conductive bracket, through the at least one fastener, and into the thermally conductive mounting clamp through conduction.

15. A method of dissipating heat in a medical device comprising:

dissipating heat from a power supply within a housing into a heat shield disposed within the housing adjacent to the power supply, the heat shield positioned against at least one interior surface of a handle of the housing, the heat passing from the heat shield away from the handle and into at least one fastener, the at least one fastener passing through at least one opening in the housing and in thermally conductive contact with a thermally conductive mounting clamp, the heat passing into the thermally conductive mounting clamp.

16. The method of claim 15 further comprising the power supply powering an infusion pump supported by the housing.

17. The method of claim 15 further comprising the heat generated by the power supply dissipating from the power supply to the heat shield through at least one of convection or radiation and from the heat shield, through the at least one fastener, and into the thermally conductive mounting clamp through conduction.

18. The method of claim 15 wherein the heat shield is disposed against multiple interior surfaces of the handle.

19. The method of claim 15 further comprising the heat generated by the power supply dissipating from the power supply, through the heat shield, through an electrically insulating, thermally conductive bracket disposed against the heat shield within the housing, through the at least one fastener, and into the thermally conductive mounting clamp.

20. The method of claim 19 further comprising the heat generated by the power supply dissipating from the power supply to the heat shield through at least one of convection or radiation and from the heat shield, through the electrically insulating, thermally conductive bracket, through the at least one fastener, and into the thermally conductive mounting clamp through conduction.