DISPOSABLE BLOOD-WARMING CONTAINER

• US 3,640,283 A
• Filed: 03/02/1970
• Issued: 02/08/1972
• Est. Priority Date: 03/02/1970
• Status: Expired due to Term

• Current Assignee: Charles Rogers Memhardt, Surindar Kumar Bhatia
• Original Assignee: Charles Rogers Memhardt, Surindar Kumar Bhatia
• Inventors: Bhatia, Surindar Kumar, Memhardt, Charles Rogers
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/015,704
• Time in Patent Office: 708 Days
• Field of Search: 128/214,214.2,254,258,399,402,403 165/46 23/258.5
• US Class Current: 607/106
• CPC Class Codes: A61M 1/3627 Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
• CPC Class Codes: A61M 1/369 Temperature treatment
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media

Abstract

A container for adjusting the temperature of liquids such as blood flowing therethrough, which comprises a plastic envelope, heat sealed to define a tortuous fluid flow conduit therein. The conduit has an inlet and an outlet communicating with the exterior of the container. The outlet communicates with the interior of a drip chamber, the end of the outlet being spaced from the walls of the drip chamber to permit liquid passing from the outlet to fall a short distance through space, to indicate the rate of liquid flow, and to separate and entrap in the drip chamber any gas bubbles present.

Claims

1. A container for adjusting the temperature of liquid flowing therethrough, which comprises a plastic envelope, heat sealed to define a tortuous fluid flow conduit therein, an inlet and an outlet to said conduit communicating with the exterior of said container, a drip chamber, said outlet communicating with the interior of said drip chamber and disposed In transverse relation to said drip chamber passing through a sidewall of said chamber, the end of said outlet being spaced from the walls of said drip chamber to separate and trap in said chamber any bubbles present.

2. The container of claim 1 in which said inlet is spaced below said outlet in position of use to facilitate the bubble-free filling of said fluid flow conduit by said liquid flowing therethrough.

3. The container of claim 2 in which said drip chamber has a liquid exit port which communicates with flexible tubing having means for mounting a blood administration needle thereon.

4. The container of claim 3 in which said inlet is in fluid communication with flexible tubing having coupling means for connection to a blood supply.

5. The container of claim 4 having a single tortuous fluid flow conduit.