Medical fluid delivery device actuated via motive fluid

• US 10,578,098 B2
• Filed: 03/15/2019
• Issued: 03/03/2020
• Est. Priority Date: 07/13/2005
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Orr, Troy J.
• Primary Examiner(s): Lettman, Bryan M
• Application Number:
  US16/355,101
• Publication Number:
  US 20190209768A1
• Time in Patent Office: 354 Days
• CPC Class Codes: A61M 1/14 Dialysis systems; Artificial kidneys; Blood oxygenators semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00 ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 1/3666 Cardiac or cardiopulmonary bypass, e.g. heart-lung machines
• CPC Class Codes: A61M 1/3667 with assisted venous return
• CPC Class Codes: A61M 2202/0413 Blood
• CPC Class Codes: A61M 5/14224 Diaphragm type
• CPC Class Codes: A61M 60/109 incorporated within extracorporeal blood circuits or systems
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/38 Blood oxygenation
• CPC Class Codes: A61M 60/43 using vacuum at the blood pump, e.g. to accelerate filling
• CPC Class Codes: A61M 60/847 arranged in a cassette
• CPC Class Codes: A61M 60/851 Valves
• CPC Class Codes: A61N 2005/1021 Radioactive fluid
• CPC Class Codes: F04B 2201/0601 Opening times
• CPC Class Codes: F04B 2201/0605 Leakage over a valve
• CPC Class Codes: F04B 23/04 Combinations of two or more pumps
• CPC Class Codes: F04B 43/06 Pumps having fluid drive
• CPC Class Codes: F04B 43/0736 with two or more pumping chambers in parallel
• CPC Class Codes: F04B 45/043 two or more plate-like pumping flexible members in parallel
• CPC Class Codes: F04B 45/0536 the actuating fluid being controlled by one or more valves
• CPC Class Codes: F04B 53/109 inlet and outlet valve forming one unit
• CPC Class Codes: F04B 7/02 : the valving being fluid-actuated
• CPC Class Codes: F04B 7/0275 : and being deformable, e.g. membranes
• CPC Class Codes: Y10T 137/7843 : Integral resilient member forms plural valves

Abstract

A medical fluid delivery device includes a process fluid body including first and second sides defining a first process fluid inlet valve seat and a first process fluid outlet valve seat and a second process fluid inlet valve seat and a second process fluid outlet valve seat; a first motive fluid plate defining a first aligned motive fluid inlet valve actuation area and a first aligned motive fluid outlet valve actuation area; and a second motive fluid plate defining a second aligned motive fluid inlet valve actuation area and a second aligned motive fluid outlet valve actuation area. The device further includes a first inlet valve diaphragm disposed between the first motive fluid inlet valve actuation area and the first process fluid inlet valve seat; and a first outlet valve diaphragm disposed between the first motive fluid outlet valve actuation area and the first process fluid outlet valve seat.

Claims

1. A medical fluid delivery device comprising:

a process fluid body including a first side defining a first process fluid inlet valve seat and a first process fluid outlet valve seat and a second side defining a second process fluid inlet valve seat and a second process fluid outlet valve seat;

a first motive fluid plate coupled with the first side of the process fluid body, the first motive fluid plate defining a first motive fluid inlet valve actuation area and a first motive fluid outlet valve actuation area, wherein the first motive fluid inlet valve actuation area is aligned with the first process fluid inlet valve seat and the first motive fluid outlet valve actuation area is aligned with the first process fluid outlet valve seat;

a second motive fluid plate coupled with the second side of the process fluid body, the second motive fluid plate defining a second motive fluid inlet valve actuation area and a second motive fluid outlet valve actuation area, wherein the second motive fluid inlet valve actuation area is aligned with the second process fluid inlet valve seat and the second motive fluid outlet valve actuation area is aligned with the second process fluid outlet valve seat;

a first inlet valve diaphragm disposed between the first motive fluid inlet valve actuation area and the first process fluid inlet valve seat; and

a first outlet valve diaphragm, separate from the first inlet valve diaphragm, the first outlet valve diaphragm disposed between the first motive fluid outlet valve actuation area and the first process fluid outlet valve seat.

2. The medical fluid delivery device of claim 1, which includes a second inlet valve diaphragm disposed between the second motive fluid inlet valve actuation area and the second process fluid inlet valve seat and a second outlet valve diaphragm, separate from the second inlet valve diaphragm, the second outlet valve diaphragm disposed between the second motive fluid outlet valve actuation area and the second process fluid outlet valve seat.

3. The medical fluid delivery device of claim 1, which includes a process fluid pump chamber cavity in selective fluid communication with one of the process fluid inlet valve seats and one of the process fluid outlet valve seats.

4. The medical fluid delivery device of claim 3, which includes a motive fluid pump actuation area aligned with the process fluid pump chamber cavity.

5. The medical fluid delivery device of claim 4, which includes a pump diaphragm disposed between the motive fluid pump actuation area and the process fluid pump chamber cavity.

6. The medical fluid delivery device of claim 4, wherein the process fluid pump chamber cavity is defined by the process fluid body and the motive fluid pump actuation area is defined by one of the first or second motive fluid plates.

7. The medical fluid delivery device of claim 1, which includes (i) a first process fluid pump chamber cavity in selective fluid communication with the first process fluid inlet valve seat and the first process fluid outlet valve seat and (ii) a second process fluid pump chamber cavity in selective fluid communication with the second process fluid inlet valve seat and the second process fluid outlet valve seat.

8. The medical fluid delivery device of claim 7, which includes a first motive fluid pump actuation area aligned with the first process fluid pump chamber cavity and a second motive fluid pump actuation area aligned with the second process fluid pump chamber cavity.

9. The medical fluid delivery device of claim 8, which includes (i) a first pump diaphragm disposed between the first motive fluid pump actuation area and the first process fluid pump chamber cavity and (ii) a second pump diaphragm disposed between the second motive fluid pump actuation area and the second process fluid pump chamber cavity.

10. The medical fluid delivery device of claim 7, wherein the first and second process fluid pump chamber cavities are located on the first and second sides, respectively, of the process fluid body.

11. The medical fluid delivery device of claim 1, which includes at least one motive fluid source in motive fluid communication with the first and second motive fluid plates.

12. The medical fluid delivery device of claim 1, wherein the process fluid body includes at least one process fluid passageway in fluid communication with at least one of the first or second inlet or outlet process fluid valve seats.

13. The medical fluid delivery device of claim 12, wherein the at least one process fluid passageway is defined by the process fluid body.

14. The medical fluid delivery device of claim 1, wherein at least one of the motive fluid plates includes at least one motive fluid passageway in fluid communication with at least one of its respective first or second inlet or outlet motive fluid valve actuation area.

15. The medical fluid delivery device of claim 14, wherein the at least one motive fluid passageway is located within the at least one first or second motive fluid plate.

16. A medical fluid delivery device comprising:

a process fluid body including a first side defining a first process fluid inlet valve seat and a first process fluid outlet valve seat and a second side defining a second process fluid inlet valve seat and a second process fluid outlet valve seat;

a first motive fluid plate coupled with the first side of the process fluid body, the first motive fluid plate defining a first motive fluid inlet valve actuation area and a first motive fluid outlet valve actuation area, wherein the first motive fluid inlet valve actuation area is aligned with the first process fluid inlet valve seat and the first motive fluid outlet valve actuation area is aligned with the first process fluid outlet valve seat;

a second motive fluid plate coupled with the second side of the process fluid body, the second motive fluid plate defining a second motive fluid inlet valve actuation area and a second motive fluid outlet valve actuation area, wherein the second motive fluid inlet valve actuation area is aligned with the second process fluid inlet valve seat and the second motive fluid outlet valve actuation area is aligned with the second process fluid outlet valve seat;

a process fluid pump chamber cavity in selective fluid communication with one of the process fluid inlet valve seats and one of the process fluid outlet valve seats; and

a motive fluid pump actuation area aligned with the process fluid pump chamber cavity and in selective fluid communication with one of the motive fluid inlet valve actuation areas and one of the motive fluid outlet valve actuation areas.

17. The medical fluid delivery device of claim 16, wherein the process fluid pump chamber cavity is defined by the process fluid body and the motive fluid pump actuation area is defined by one of the first or second motive fluid plates.

18. The medical fluid delivery device of claim 16, wherein the process fluid pump chamber is a first process fluid pump chamber, the motive fluid pump actuation area is a first motive fluid pump actuation area, and which includes a second process fluid pump chamber cavity in selective fluid communication with the other one of the process fluid inlet valve seats and the other one of the process fluid outlet valve seats, and a second a motive fluid pump actuation area aligned with the second process fluid pump chamber cavity and in selective fluid communication with the other one of the motive fluid inlet valve actuation areas and the other one of the motive fluid outlet valve actuation areas.

19. The medical fluid delivery device of claim 16, wherein one of the first or second process fluid pump chambers is located on the first side of the process fluid body and the other of the first or second process fluid pump chambers is located on the second side of the process fluid body.

20. The medical fluid delivery device of claim 19, wherein the second process fluid pump chamber is located on the first side of the process fluid body and the first process fluid pump chamber is located on the second side of the process fluid body.

21. A medical fluid delivery device comprising:

a process fluid body including a first side defining a first process fluid valve seat and a second process fluid valve seat and a second side defining a third process fluid valve seat and a fourth process fluid valve seat;

a first motive fluid plate coupled with the first side of the process fluid body, the first motive fluid plate defining a first motive fluid valve actuation area and a second motive fluid valve actuation area, wherein the first motive fluid valve actuation area is aligned with the first process fluid valve seat and the second motive fluid valve actuation area is aligned with the second process fluid valve seat;

a second motive fluid plate coupled with the second side of the process fluid body, the second motive fluid plate defining a third motive fluid valve actuation area and a fourth motive fluid valve actuation area, wherein the third motive fluid valve actuation area is aligned with the third process fluid valve seat and the fourth motive fluid valve actuation area is aligned with the fourth process fluid outlet valve seat;

a first valve diaphragm disposed between the first motive fluid valve actuation area and the first process fluid valve seat;

a second valve diaphragm, separate from the first valve diaphragm, the second valve diaphragm disposed between the second motive fluid valve actuation area and the second process fluid valve seat;

a third valve diaphragm disposed between the third motive fluid valve actuation area and the third process fluid valve seat; and

a fourth valve diaphragm, separate from the third valve diaphragm, the fourth valve diaphragm disposed between the fourth motive fluid valve actuation area and the fourth process fluid valve seat.

22. The medical fluid delivery device of claim 21, wherein at least one of (i) the first process fluid valve seat, the first motive fluid valve actuation area, and the first valve diaphragm, (ii) the second process fluid valve seat, the second motive fluid valve actuation area, and the second valve diaphragm, (iii) the third process fluid valve seat, the third motive fluid valve actuation area, and the third valve diaphragm, or (iv) the fourth process fluid valve seat, the fourth motive fluid valve actuation area, and fourth valve diaphragm, form a pump inlet valve chamber or a pump outlet valve chamber.

23. The medical fluid delivery device of claim 21, wherein at least one of (i) the first process fluid valve seat, (ii) the second process fluid valve seat, (iii) the third process fluid valve seat, or (iv) the fourth process fluid valve seat, is in fluid communication with a process fluid pump chamber cavity.

24. The medical fluid delivery device of claim 23, wherein the process fluid pump chamber cavity is provided by the process fluid body.

25. The medical fluid delivery device of claim 21, wherein at least one of (i) the first motive fluid valve actuation area, (ii) the second motive fluid valve actuation area, (iii) the third motive fluid valve actuation area, or (iv) the fourth motive fluid valve actuation area, is in fluid communication with a motive fluid pump actuation area.

26. The medical fluid delivery device of claim 25, wherein the motive fluid pump actuation area is provided by one of the first or second motive fluid plates.