Apparatus and process for thawing temperature sensitive frozen materials

• US 3,154,663 A
• Filed: 01/30/1959
• Issued: 10/27/1964
• Est. Priority Date: 01/30/1959
• Status: Expired due to Term

• Current Assignee: Harold W. Halvorsen
• Original Assignee: Harold W. Halvorsen
• Inventors: Halvorsen, Harold W.
• Application Number:
  US03/790,273
• Time in Patent Office: 2,097 Days
• US Class Current: 219/628
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 5/445 the media being heated in the reservoir, e.g. warming bloodbags
• CPC Class Codes: H05B 6/108 for heating a fluid

Claims

1. APPARATUS FOR THAWING BLOOD COMPRISING A CLOSED CONTAINER HAVING FROZEN BLOOD THEREIN, INSULATING MEANS FOR SEALING SAID CONTAINER TO PREVENT CONTAMINATION OF SAID BLOOD, A PERFORATED METAL DISK RECEIVED IN SAID CONTAINER AND PROPORTIONED FOR MOVEMENT WITHIN SAID CONTAINER, ELECTRICAL INSULATING MATERIAL PROVIDED ALONG THE LENGTH OF SAID CONTAINER, ELECTROMAGNETIC MEANS FOR INDUCING CURRENT FLOW IN SAID DISK TO PRODUCE HEATING THEREOF ACROSS THE AREA OF THE CONTAINER, SAID HEATING BEING SUFFICIENT TO THAW THE BLOOD IN CONTACT WITH SAID DISK, AND MEANS FOR BIASING SAID DISK INCREMENTALLY THROUGH SAID FROZEN BLOOD WHEREBY SAID BLOOD AS IT THAWS IS PASSED THROUGH SAID PERFORATIONS AND THE INTERFACE OF SAID DISK IS MAINTAINED IN ENGAGEMENT WITH THE EXPOSED PORTION OF SAID BLOOD.