System and method for providing warm, pressurized irrigation fluid

• US 7,905,858 B2
• Filed: 03/14/2008
• Issued: 03/15/2011
• Est. Priority Date: 03/14/2008
• Status: Expired due to Fees

• Current Assignee: John Temple
• Original Assignee: John Temple
• Inventors: Temple, John
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): MATNEY, BROOKE MARIE
• Application Number:
  US12/048,466
• Publication Number:
  US 20090234287A1
• Time in Patent Office: 1,096 Days
• Field of Search: 604/113, 604/142, 604/253, 604/408, 604/132, 604/141
• US Class Current: 604/113
• CPC Class Codes: A61M 2005/14204 with gas-producing electrochemical cell
• CPC Class Codes: A61M 2205/073 Syringe, piston type
• CPC Class Codes: A61M 2205/364 by chemical reaction
• CPC Class Codes: A61M 5/1483 using flexible bags externally pressurised by fluid pressure
• CPC Class Codes: A61M 5/445 the media being heated in the reservoir, e.g. warming bloodbags

Abstract

An economical yet effective apparatus and associated method heats and pressurizes a fluid-filled bag of the type used in a surgical setting. The apparatus includes an inner sealed flexible jacket including a sodium acetate solution and activator button therein operative to heat the fluid-filled bag. An outer sealed flexible jacket adjacent to the inner jacket includes a gas inlet for inflation thereof thereby applying pressure to the fluid-filled bag through the heated inner jacket during use.

Claims

1. Apparatus for heating and pressurizing a fluid-filled bag, comprising:

a flexible, tubular sleeve configured to receive a fluid-filled bag having an outer wall;

the flexible, tubular sleeve including substantially co-extensive inner and outer sealed jackets, both configured to wrap entirely around the outer wall of the fluid-filled bag;

the inner sealed jacket being filled with a sodium acetate solution and including an activator button operative to initiate an exothermic reaction within the solution, causing the inner jacket to become heated;

a substance or device for inflating the outer sealed jacket, thereby applying pressure and heat to the entire outer wall of the fluid-filled bag through the heated inner jacket.

2. The apparatus of claim 1, wherein the substance or device for inflating the outer sealed jacket includes:

a container including acetic acid and sodium bicarbonate in communication with the outer sealed jacket; and

a manually operable device for mixing the acetic acid and sodium bicarbonate to inflate the outer sealed jacket with carbon dioxide.

3. The apparatus of claim 1, wherein the substance or device for inflating the outer sealed jacket includes a manually operated air pump in communication with the outer sealed jacket.

4. The apparatus of claim 1, wherein the substance or device for inflating the outer sealed jacket includes a coupling for connecting the outer sealed jacket to a source of pressurization.

5. The apparatus of claim 1, wherein the inner and outer sealed jackets are substantially coextensive and peripherally bonded to one another.

6. The apparatus of claim 1, wherein the inner and outer sealed jackets share a common wall.

7. The apparatus of claim 1, wherein the inner jacket includes heat-sealed regions to maintain a desired thickness.

8. The apparatus of claim 1, further including one or more hanging tabs.

9. The apparatus of claim 1, wherein the inner and outer jackets are constructed of polyvinyl chloride (PVC) or other thermoplastic rubber sheets.

10. The apparatus of claim 1, further including a set of hook-and-loop fasteners for maintaining the jackets in a wrapped position around the fluid-filled bag.

11. The apparatus of claim 1, further including:

a first side edge with an elongate slot;

a second, opposing side edge with a flap extending therefrom, the flap terminating in a first elongate strip of hoop-and-loop fastener material; and

a second elongate strip of hoop-and-loop fastener material disposed on the outer surface of the outer jacket, enabling the flap to be inserted through the slot and folded back over so that the first and second elongate strips of hoop-and-loop fastener material connect and maintain the jackets in wrapped position around the fluid-filled bag.

12. The apparatus of claim 1, further including:

a first side edge with a bent metal wire forming an elongate slot;

a second, opposing side edge with a flap extending therefrom, the flap terminating in a first elongate strip of hoop-and-loop fastener material; and

a second elongate strip of hoop-and-loop fastener material disposed on the outer surface of the outer jacket, enabling the flap to be inserted through the slot and folded back over so that the first and second elongate strips of hoop-and-loop fastener material connect and maintain the jackets in wrapped position around the fluid-filled bag.