Flexible fluid junction

• US 5,771,914 A
• Filed: 02/13/1997
• Issued: 06/30/1998
• Est. Priority Date: 02/13/1997
• Status: Expired due to Term

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Heremans, Alphonse, Henaut, Eric J., Balteau, Patrick, Lo, Ying-Cheng, Bellotti, Marc, Peluso, Francesco, Ling, Michael T. K., Castellanos, Rafael A., Woo, Lecon, Peters, Robin, Loh, Eric P.
• Primary Examiner(s): Ferensic, Denise L.
• Assistant Examiner(s): FARID, RAMYAR M
• Application Number:
  US08/799,855
• Time in Patent Office: 502 Days
• Field of Search: 251/4, 251/9, 137/597, 137/605, 137/1, 604/27, 604/30, 604/32, 604/34, 604/256, 604/28, 604/250, 604/283, 604/284
• US Class Current: 137/1
• CPC Class Codes: A61M 39/18 Methods or apparatus for making the connection under sterile conditions, i.e. sterile docking
• CPC Class Codes: Y10T 137/0318 Processes
• CPC Class Codes: Y10T 137/87249 Multiple inlet with multiple outlet
• CPC Class Codes: Y10T 137/87676 With flow control

Abstract

A flexible fluid junction that links three or more fluid ducts is provided. The junction includes a pair of flexible webs with at least three tubes or fluid ducts disposed between the flexible webs. The outer periphery of the webs is sealed together and around the tubes to define a chamber. An end of each tube terminates inside the chamber so that fluid may flow from each tube through the chamber. Still further, a method of manufacturing a flexible fluid junction and a method of using a flexible fluid junction are also provided.

Claims

1. A method of linking at least two containers, including a solution container, a drainage container, and at least one supply tube, without introducing air bubbles to the supply tube, the method comprising the following steps:

providing at least two containers including the solution container and the drainage container,

providing a flexible fluid junction comprising a pair of flexible webs, each of the webs having an outer periphery, and at least three tubes including a solution tube, a drainage tube and a supply tube, each of said tubes being disposed between the flexible webs, the outer peripheries of the webs being sealed together and around the tubes to define a flexible mixing chamber, an end of each of the tubes terminating inside the chamber,

isolating the solution tube from the drain and supply tubes with a clamp that extends across the flexible fluid junction between the solution tube and the drain and patient tubes,

connecting the drain tube to the drain container,

connecting the patient tube to a source of waste fluid,

connecting the solution container to the solution tube,

establishing fluid flow between the source of waste fluid and the drain container,

removing the clamp.

2. The method of claim 1, wherein the solution tube and the drain tube are connected together with an aperture disposed between the tubes and between the flexible webs so that the aperture is disposed within the chamber.

3. A flexible fluid junction comprising:

a pair of flexible webs, each of the webs having an outer periphery,

at least three tubes disposed between the flexible webs, the outer peripheries of the webs being sealed together and around the tubes to define a flexible mixing chamber, an end of each of the tubes terminating inside the chamber and,

a clamp extending across exterior surfaces of the webs, the clamp, when in a closed position, presses interior surfaces of the webs together and isolates at least one of the tubes from the other tubes.

4. The flexible fluid junction of claim 3, wherein two of the tubes are connected together with an aperture disposed between the tubes and within the chamber.

5. The flexible fluid junction of claim 3, wherein the webs are formed by an extrusion process.

6. The flexible fluid junction of claim 3, wherein the clamp is connected to the exterior surface of one web and including an upper arm and a lower arm, the arms being pivotally connected together, the lower arm including a latch for engaging a distal end of the upper arm when the upper arm is pivoted downward toward the lower arm in a closed position, at least one of the tubes being isolated from the other tubes.

7. The flexible fluid junction of claim 3, wherein said junction is capable of being stored in the clamped position without substantial permanent deformation.

8. The flexible fluid junction of claim 3 further comprising a fourth tube, the fourth tube terminating inside the chamber and being sealably connected between the outer peripheries of the two webs.

9. The flexible fluid junction of claim 8, wherein the fourth tube is connected to one other tube with an aperture disposed between the tubes and within the chamber.

10. The flexible fluid junction of claim 8, further comprising a clamp extending across exterior surfaces of the webs, the clamp, when in a closed position, presses interior surfaces of the webs together and isolates two of the tubes from the other two tubes.

11. The flexible fluid junction of claim 3 further comprising a fourth tube and a fifth tube, the fourth and fifth tubes terminating inside the chamber and being sealably connected between the outer peripheries of the two webs.

12. The flexible fluid junction of claim 3, wherein the webs comprise a film selected from the group consisting of PVC, PVC coated with a copolyester, PVC laminated with a copolyester;

PVC coextruded with a copolyester, a polyester block copolymer, a polyester block copolymer containing a lubricant, polyethylene, and polypropylene.

13. The flexible fluid junction of claim 3, wherein the outer peripheries of the webs being sealed together and to the tubes by RF.

14. A fluid exchange system comprising:

a patient tube,

at least one solution line,

at least one solution container,

a drainage line,

a drainage container,

a flexible fluid junction comprising a pair of flexible webs, each of the webs having an outer periphery, and at least three tubes including a solution tube, a drainage tube and a supply tube, each of said tubes being disposed between the flexible webs, the outer peripheries of the webs being sealed together and around the tubes to define a flexible mixing chamber, an end of each of the tubes terminating inside the chamber, the solution tube being connected to the solution container, the drainage tube being connected to the drainage container and,

a clamp extending across exterior surfaces of the webs, the clamp, when in a closed position, presses interior surfaces of the webs together and isolates at least one of the tubes and prevents flow from the isolated tube from entering the chamber.

15. The system of claim 14, wherein the solution tube and the drain tube are connected together with an aperture disposed between the tubes and between the flexible webs so that the aperture is disposed within the chamber.