Open access sleeve for heated fluid units

• US 9,114,218 B2
• Filed: 05/06/2013
• Issued: 08/25/2015
• Est. Priority Date: 08/24/2004
• Status: Active Grant

• Current Assignee: C Change Surgical LLC
• Original Assignee: C Change Surgical LLC
• Inventors: Kammer, Patrick, Rackers, Kevin Joseph, Martel, Mark, Cassidy, Todd
• Primary Examiner(s): NORMAN, MARC E
• Application Number:
  US13/887,604
• Publication Number:
  US 20130310799A1
• Time in Patent Office: 841 Days
• Field of Search: 236/1.C, 219/430, 219/433, 219/435, 219/438, 219476-480, 604/114, 604/291
• US Class Current: 1/1
• CPC Class Codes: A61B 2050/0018 Electric heating
• CPC Class Codes: A61M 5/445 the media being heated in the reservoir, e.g. warming bloodbags
• CPC Class Codes: G05D 23/1909 whose output amplitude can only take two discrete values
• CPC Class Codes: G05D 23/1931 to control the temperature of one space
• CPC Class Codes: G05D 23/20 with sensing elements having variation of electric or magnetic properties with change of temperature G05D23/13 takes precedence
• CPC Class Codes: G05D 23/22 the sensing element being a thermocouple

Abstract

A series of implementations of open access sleeves for holding one or more closed containers of sterile fluid for use in medical procedures are disclosed. The open access sleeves may be adapted to provide heat to maintain the containers of sterile fluid above the ambient air temperature of the room. The provision of heat may be controlled by a control system. The control system may use a temperature measurement device to obtain a temperature representative of the container of sterile fluid and of the sterile fluid in the container. The access sleeve may be included in a device for maintaining an open volume of sterile fluid within a range of a target temperature to maintain the closed containers of sterile fluid at a temperature near target temperature for open volume of sterile fluid.

Claims

1. A method of slowing the cooling of sterile fluid in a closed container of sterile fluid from an initial temperature T1 to the ambient temperature of a room containing the closed container of sterile fluid, the method comprising:

connecting a device having at least one access sleeve to a power source to provide electric power to at least one heater to heat at least a portion of the walls surrounding an access sleeve; and

placing the closed container of sterile fluid in the access sleeve with at least one side of the access sleeve remaining open to ambient air;

wherein the access sleeve slows the cooling of the sterile fluid in the closed container from the initial temperature T1 towards the ambient temperature of the room containing the closed container.

2. The method of slowing the cooling of sterile fluid of claim 1 further including adjusting at least one internal setting within the device to alter the behavior of the at least one heater.

3. The method of slowing the cooling of sterile fluid of claim 1 wherein the at least one heater operates without temperature feedback from a temperature sensor.

4. The method of slowing the cooling of sterile fluid of claim 1 wherein the at least one heater operates in response to a control system that receives a temperature measurement from a temperature sensor associated with the access sleeve.

5. The method of slowing the cooling of sterile fluid of claim 1 wherein the at least one heater operates in response to a control system that receives a temperature measurement from a temperature sensor in contact with a wall of the access sleeve.

6. The method of slowing the cooling of sterile fluid of claim 1 wherein the at least one heater operates in response to a control system that receives a temperature measurement from a temperature sensor in contact with the closed container of sterile fluid placed in the access sleeve.

7. The method of slowing the cooling of sterile fluid of claim 1 wherein the at least one heater operates in response to a control system that receives a temperature measurement from a temperature sensor in contact with air inside the access sleeve.

8. The method of slowing the cooling of sterile fluid of claim 1 wherein a controller response to a temperature input controls the at least one heater to avoid heating the closed container of sterile fluid above a target temperature.