Fluid delivery system having a plurality of resilient pressurizing chambers

• US 8,133,205 B2
• Filed: 11/20/2007
• Issued: 03/13/2012
• Est. Priority Date: 03/04/2005
• Status: Active Grant

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Medrad Incorporated (Bayer AG)
• Inventors: Rhinehart, Edward J., Hack, Dennis P., Reilly, David M., Kalafut, John F.
• Primary Examiner(s): Mehta, Bhisma
• Application Number:
  US11/942,772
• Publication Number:
  US 20080071220A1
• Time in Patent Office: 1,575 Days
• Field of Search: 604/118, 604/121, 604/131, 604/132, 604/151, 604/152, 604/153, 604/154, 604/251
• US Class Current: 604/151
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 2206/22 eliminating pulsatile flows, e.g. by the provision of a dampening chamber
• CPC Class Codes: A61M 5/002 Packages specially adapted therefor, e.g. for syringes or needles, kits for diabetics needle protection, e.g. caps, A61M5/3202; for sharps A61B50/3001
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/1422 with double acting or multiple pistons
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

A fluid delivery system includes a fluid container, two or more pressurizing chambers in fluid connection with the fluid container, a drive mechanism in operative connection with the two or more pressurizing chambers to pump fluid from the fluid container and an outlet in fluid connection with the two or more pressurizing chambers. Each of the two or more pressurizing chambers is formed from a flexible, resilient material that is adapted to be compressed to pressurize fluid therewithin.

Claims

1. An injection system, comprising:

a fluid container;

a pumping mechanism comprising two or more pressurizing chambers in fluid connection with the fluid container via a connector, each of the two or more pressurizing chambers being formed from a flexible, resilient material that is adapted to be compressed to pressurize fluid therewithin,

wherein each of the two or more pressurizing chambers has an input and an output, the input of each of the two or more pressurizing chambers in fluid connection with the fluid container, and

wherein the two or more pressurizing chambers are disposed generally parallel to each other, to form separate flow paths through the pumping mechanism; and

a drive mechanism comprising respective drive members cooperating with the two or more pressurizing chambers of the pumping mechanism to pump fluid from the fluid container and to pressurize fluid within the two or more pressurizing chambers, wherein the drive members are driven in a reciprocating manner to sequentially compress the respective pressurizing chambers in an alternating, timed sequence to sequentially pass fluid through the separate flow paths and provide substantially continuous fluid flow to an outlet in fluid connection with the output of each of the two or more pressurizing chambers.

2. The fluid delivery system of claim 1, further comprising a check valve in fluid connection with the outlet to prevent contaminants from entering into the pumping mechanism.

3. The fluid delivery system of claim 1, further comprising an inlet valve in fluid connection with each of the two or more pressurizing chambers, respectively, and adapted to allow flow from the fluid container into the two or more pressurizing chambers but to prevent flow from the two or more pressurizing chambers into the fluid container.

4. The fluid delivery system of claim 1, further comprising an outlet valve in fluid connection with each of the two or more pressurizing chambers, respectively, and adapted to allow flow from the two or more pressurizing chambers into the outlet but to prevent flow from the outlet into the two or more pressurizing chambers.

5. The fluid delivery system of claim 1 wherein the two or more pressurizing chambers comprises three pressurizing chambers.

6. The fluid delivery system of claim 1 wherein the fluid container comprises an inlet port through which additional fluid or another fluid can be delivered into the fluid container.

7. The fluid delivery system of claim 1 wherein the fluid container comprises one or more outlet ports through which fluid can be delivered to a destination other than the pumping mechanism.

8. The fluid delivery system of claim 1 wherein the drive mechanism further comprises a closure that is adapted to be moved between an open position and a closed position of the drive mechanism.

9. The fluid delivery system of claim 1 wherein the flexible material of the two or more pressurizing chambers is suitably resilient such that recovery of the flexible material creates a pressure difference between the two or more pressurizing chambers and the fluid container suitable to draw fluid from the fluid container into the two or more pressurizing chambers.

10. A fluid delivery system comprising:

a connector connectible to a fluid container;

at least two pressurizing chambers in fluid connection with the connector, each of the at least two pressurizing chambers being formed from a flexible, resilient material that can be compressed to pressurize fluid within the at least two pressurizing chambers,

wherein each of the at least two pressurizing chambers has an input and an output, the input of each of the at least two pressurizing chambers in fluid connection with the connector,

wherein the at least two pressurizing chambers are disposed generally parallel to each other to form separate flow paths,

a common outlet in fluid connection with the output of each of the at least two pressurizing chambers;

an inlet valve in fluid connection with each of the at least two pressurizing chambers, respectively, and operable to allow fluid to enter the at least two pressurizing chambers from the fluid container but to prevent fluid from flowing from the at least two pressurizing chambers into the fluid container;

an outlet valve in fluid connection with each of the at least two pressurizing chambers, respectively, and operable to allow fluid to enter the common outlet from the at least two pressurizing chambers but to prevent fluid from flowing from the common outlet into the at least two pressurizing chambers; and

a drive mechanism comprising respective drive members cooperating with the at least two pressurizing chambers to pump fluid from the fluid container and to pressurize fluid within the at least two pressurizing chambers, wherein the drive members are driven in a reciprocating manner to sequentially compress the respective pressurizing chambers in an alternating, timed sequence to sequentially pass fluid through the separate flow paths and provide substantially continuous fluid flow to the common outlet.

11. The fluid delivery system of claim 10 wherein the at least pressurizing chambers comprises three pressurizing chambers.

12. The fluid delivery system of claim 10 wherein the fluid container comprises an inlet port through which additional fluid or another fluid can be delivered into the fluid container.

13. The fluid delivery system of claim 10 wherein the fluid container comprises one or more outlet ports through which fluid can be delivered to a destination other than the at least two pressurizing chambers.

14. The fluid delivery system of claim 10 wherein the drive mechanism further comprises a closure that is adapted to be moved between an open position and a closed position of the drive mechanism.

15. The fluid delivery system of claim 10 wherein the flexible material of the at least two pressurizing chambers is suitably resilient such that recovery of the flexible material creates a pressure difference between the at least two pressurizing chambers and the fluid container suitable to draw fluid from the fluid container into the at least two pressurizing chambers.

16. An injection system, comprising:

a fluid container;

a pumping mechanism in fluid connection with the fluid container via a connector and comprising at least two generally parallel pressurizing chambers; and

a drive mechanism in operative connection with each of the at least two pressurizing chambers to pump fluid from the fluid container,

wherein each of the at least two pressurizing chambers is formed of a flexible, resilient material adapted to compress thereby pressurizing fluid therewithin,

wherein each of the at least two pressurizing chambers has an input in fluid connection with the fluid container and an output,

wherein each of the at least two pressurizing chambers forms a separate flow path through the pumping mechanism, and

wherein the drive mechanism comprises respective drive members cooperating with the at least two pressurizing chambers to pump fluid from the fluid container and to pressurize fluid within the at least two pressurizing chambers, wherein the drive members are driven in a reciprocating manner to sequentially compress the respective pressurizing chambers in an alternating, timed sequence to sequentially pass fluid through the separate flow paths and provide substantially continuous fluid flow.

17. The injection system of claim 16 wherein the at least two pressurizing chambers comprises three pressurizing chambers.

18. The injection system of claim 16 wherein the fluid container comprises an inlet port through which additional fluid or another fluid can be delivered into the fluid container.

19. The injection system of claim 16 wherein the fluid container comprises one or more outlet ports through which fluid can be delivered to a destination other than the pumping mechanism.

20. The injection system of claim 16 wherein the drive mechanism further comprises a closure that is adapted to be moved between an open position and a closed position of the drive mechanism.

21. The injection system of claim 16 wherein the flexible material of the at least two pressurizing chambers is suitably resilient such that recovery of the flexible material creates a pressure difference between the at least two pressurizing chambers and the fluid container suitable to draw fluid from the fluid container into the at least two pressurizing chambers.