Frozen plasma thawing system

• US 5,779,974 A
• Filed: 10/30/1995
• Issued: 07/14/1998
• Est. Priority Date: 10/30/1995
• Status: Expired due to Fees

• Current Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Kuzyk, Roman
• Primary Examiner(s): JASTRZAB, KRISANNE MARIE
• Application Number:
  US08/550,291
• Time in Patent Office: 988 Days
• Field of Search: 422/1, 422/40, 422/41, 422/44, 422/307, 422/309, 604/903, 165/80.5, 165/104.28, 165/104.31
• US Class Current: 422/44
• CPC Class Codes: A61M 1/025 Means for agitating or shaking blood containers A61M1/0245 takes precedence; shaking in general B01F31/00
• CPC Class Codes: A61M 2205/366 by liquid heat exchangers
• CPC Class Codes: A61M 5/445 the media being heated in the reservoir, e.g. warming bloodbags
• CPC Class Codes: Y10S 604/903 Medical container with material agitation means

Abstract

A technique and apparatus for rapidly thawing a frozen blood plasma unit. The holder maintains a plasma unit pouch submerged in a manner which affords substantial thermal contact between the plasma unit and the fluid bath. The fluid is manipulated to provide a kneading effect on the exterior surface of the bag to enhance thawing efficiency.

Claims

1. A system for thawing a frozen plasma unit pouch comprising;

a fluid bath adapted to hold a quantity of fluid;

mounting means for supporting said pouch in a substantially submerged position with respect to said quantity of fluid when containing said frozen plasma unit pouch;

means for varying a flow of the fluid in said fluid bath to create a kneading effect on the exterior of the frozen plasma unit to thereby reduce the thawing time of said frozen plasma unit,

wherein said means for varying the flow of the fluid comprises a wall positioned in said fluid adjacent said pouch and an oscillating means for generating a differential in water depth on opposite sides of said wall, said wall comprising at least one aperture through which said fluid passes as a result of said differential to create said kneading effect.

2. The system as defined in claim 1, wherein said mounting means comprises an upper platform above the fluid level, and a fastening means for affixing said pouch to said upper platform in spaced relationship from the fluid level.

3. The system as defined in claim 1, wherein said mounting means comprises a stabilizing means submerged in said fluid for maintaining said pouch in a submerged position and adjacent said means for varying the flow of the fluid.

4. The system as defined in claim 3, wherein said stabilizing means comprises spaced rods adapted to received said pouch in a space between said spaced rods.

5. The system as defined in claim 1, wherein said fluid bath comprises sidewalls, the pouch being located with respect to one of the sidewalls so that there is a substantial space between said sidewall and said mounting means, said substantial space providing a region to facilitate insertion and removal of said pouch from said fluid bath.

6. The system as recited in claim 1, wherein said oscillating means comprises a mechanism which rocks said bath to and fro and oscillates said fluid within said bath.

7. The system as recited in claim 1, wherein said oscillating means comprises a movable plate member within said bath which moves to and fro within said fluid to cause oscillation of said fluid within said bath.