Medical fluid pumping system including pump and machine chassis mounting regime

• US 10,590,924 B2
• Filed: 03/15/2019
• Issued: 03/17/2020
• 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:
  US16/355,141
• Publication Number:
  US 20190209769A1
• Time in Patent Office: 368 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 pumping system includes (i) a medical fluid pump including a pump chamber, inlet and outlet valve chambers in fluid communication with the pump chamber, the pump chamber associated with a pumping chamber motive fluid connection, the inlet valve chamber associated with an inlet valve motive fluid connection, and the outlet valve chamber associated with an outlet valve motive fluid connection; and (ii) a medical fluid chassis including a motive fluid source, and a first motive fluid connecting structure, a second motive fluid connecting structure, a third motive fluid connecting structure. The pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection are translated simultaneously to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure for fluid communication with the motive fluid source.

Claims

1. A medical fluid pumping system comprising:

a medical fluid pump including

a first pump chamber,

a first inlet valve chamber in fluid communication with the first pump chamber,

a first outlet valve chamber in fluid communication with the first pump chamber,

a second pump chamber,

a second inlet valve chamber in fluid communication with the second pump chamber, and

a second outlet valve chamber in fluid communication with the second pump chamber, wherein the medical fluid pump includes a first pumping chamber motive fluid connection, a first inlet valve motive fluid connection, a first outlet valve motive fluid connection, a second pumping chamber motive fluid connection, a second inlet valve motive fluid connection, and a second outlet valve motive fluid connection; and

a medical fluid chassis including

a motive fluid source, and

a first motive fluid connecting structure, a second motive fluid connecting structure, a third motive fluid connecting structure, a fourth motive fluid connecting structure, a fifth motive fluid connecting structure and a sixth motive fluid connecting structure, the medical fluid pump and the medical fluid chassis configured and arranged such that collectively and in a same direction (i) the first pump chamber motive fluid connection mates with the first motive fluid connecting structure for supplying motive fluid from the source to the first pump chamber, (ii) the first inlet valve motive fluid connection mates with the second motive fluid connecting structure for supplying motive fluid from the source to the first inlet valve chamber, (iii) the first outlet valve motive fluid connection mates with the third motive fluid connecting structure for supplying motive fluid from the source to the first outlet valve chamber, (iv) the second pump chamber motive fluid connection mates with the fourth motive fluid connecting structure for supplying motive fluid from the source to the second pump chamber, (v) the second inlet valve motive fluid connection mates with the fifth motive fluid connecting structure for supplying motive fluid from the source to the second inlet valve chamber, and (vi) the second outlet valve motive fluid connection mates with the sixth motive fluid connecting structure for supplying motive fluid from the source to the second outlet valve chamber.

2. The medical fluid pumping system of claim 1, wherein the medical fluid pump includes a plate forming the first pumping chamber motive fluid connection, the first inlet valve motive fluid connection, the first outlet valve motive fluid connection, the second pumping chamber motive fluid connection, the second inlet valve motive fluid connection, and the second outlet valve motive fluid connection.

3. The medical fluid pumping system of claim 1, wherein at least one of the first pumping chamber motive fluid connection, the first inlet valve motive fluid connection, the first outlet valve motive fluid connection, the second pumping chamber motive fluid connection, the second inlet valve motive fluid connection, or the second outlet valve motive fluid connection of the medical fluid pump includes a motive fluid transfer boss.

4. The medical fluid pumping system of claim 3, wherein at least one of the six motive fluid connecting structures of the medical fluid chassis defines an aperture for receiving one of the at least one motive fluid transfer bosses.

5. The medical fluid pumping system of claim 4, which includes an o-ring adjacent to each of the at least one apertures for sealing to one of the at least one motive fluid transfer bosses.

6. The medical fluid pumping system of claim 4, wherein each of the six motive fluid connecting structures of the medical fluid chassis defines an aperture, and wherein each of the apertures is provided by a same surface of the medical fluid chassis.

7. The medical fluid pumping system of claim 1, wherein the medical fluid chassis includes a manifold base having plural motive fluid transfer passages for communicating motive fluid from the motive fluid source to at least one of the first pumping chamber motive fluid connection, the first inlet valve motive fluid connection, the first outlet valve motive fluid connection, the second pumping chamber motive fluid connection, the second inlet valve motive fluid connection, or the second outlet valve motive fluid connection of the medical fluid pump.

8. The medical fluid pumping system of claim 7, wherein the manifold base provides the motive fluid connecting structures.

9. The medical fluid pumping system of claim 7, wherein the plural motive fluid transfer passages are located within the manifold base.

10. The medical fluid pumping system of claim 1, wherein each of the first pumping chamber motive fluid connection, the first inlet valve motive fluid connection, the first outlet valve motive fluid connection, the second pumping chamber motive fluid connection, the second inlet valve motive fluid connection, and the second outlet valve motive fluid connection of the medical fluid pump extends in a same direction so as to be collectively and in the same direction translatable onto the medical fluid chassis.

11. The medical fluid pumping system of claim 1, wherein each of the first pumping chamber motive fluid connection, the first inlet valve motive fluid connection, the first outlet valve motive fluid connection, the second pumping chamber motive fluid connection, the second inlet valve motive fluid connection, and the second outlet valve motive fluid connection of the medical fluid pump extends from the medical fluid pump such that the connections are mated with their corresponding motive fluid connecting structures simultaneously.

12. The medical fluid pumping system of claim 1, wherein the medical fluid pump includes a motive fluid chamber plate mated with a process fluid pump body, the motive fluid chamber plate forming the motive fluid connections, and the process fluid pump body forming process fluid pump chamber cavities for the first and second pump chambers and process fluid valve seats for the first and second inlet and outlet valve chambers, the process fluid pump chamber cavities and the process fluid valve seats corresponding to respective ones of the motive fluid connections.

13. The medical fluid pumping system of claim 12, which includes a process fluid inlet tube and a process fluid outlet tube placed in selective fluid communication with the process fluid pump chamber cavities and the process fluid valve seats.

14. The medical fluid pumping system of claim 12, wherein the process fluid pump body provides process fluid pathways fluidly connecting the process fluid pump chamber cavities and the process fluid valve seats.

15. A medical fluid pumping system comprising:

a medical fluid pump including

a pump chamber,

an inlet valve chamber in fluid communication with the pump chamber, and

an outlet valve chamber in fluid communication with the pump chamber, wherein the pump chamber is associated with a pumping chamber motive fluid connection, the inlet valve chamber is associated with an inlet valve motive fluid connection, and the outlet valve chamber is associated with an outlet valve motive fluid connection; and

a medical fluid chassis including

a motive fluid source, and

a first motive fluid connecting structure,

a second motive fluid connecting structure,

a third motive fluid connecting structure, and

wherein the medical fluid pump and the medical fluid chassis are structured such that the pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection are translated together to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure for fluid communication with the motive fluid source.

16. The medical fluid pumping system of claim 15, wherein at least one of (i) the pump chamber includes a motive fluid pump actuation area in motive fluid communication with the pumping chamber motive fluid connection, (ii) the inlet valve chamber includes a motive fluid inlet valve actuation area in motive fluid communication with the inlet valve motive fluid connection, or (iii) the outlet valve chamber includes a motive fluid outlet valve actuation area in motive fluid communication with the outlet valve motive fluid connection.

17. The medical fluid pumping system of claim 16, wherein at least one of (i) the pump chamber includes a process fluid pump cavity chamber operable with the motive fluid pump actuation area, (ii) the inlet valve chamber includes a process fluid inlet valve seat operable with the motive fluid inlet valve actuation area, or (iii) the outlet valve chamber includes a process fluid outlet valve seat operable with motive fluid outlet valve actuation area.

18. The medical fluid pumping system of claim 15, wherein the pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection each includes a motive fluid transfer boss extending from the medical fluid pump so as to be translated together to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure of the medical fluid chassis.

19. A medical fluid pumping system comprising:

a medical fluid pump including

a pump chamber,

an inlet valve chamber in fluid communication with the pump chamber, and

an outlet valve chamber in fluid communication with the pump chamber, wherein the pump chamber is associated with a pumping chamber motive fluid connection, the inlet valve chamber is associated with an inlet valve motive fluid connection, and the outlet valve chamber is associated with an outlet valve motive fluid connection; and

a medical fluid chassis including

a motive fluid source, and

a first motive fluid connecting structure,

a second motive fluid connecting structure,

a third motive fluid connecting structure, and

wherein the medical fluid pump and the medical fluid chassis are structured such that the pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection are moveable simultaneously to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure for fluid communication with the motive fluid source.

20. The medical fluid pumping system of claim 19, wherein at least one of (i) the pump chamber includes a motive fluid pump actuation area in motive fluid communication with the pumping chamber motive fluid connection, (ii) the inlet valve chamber includes a motive fluid inlet valve actuation area in motive fluid communication with the inlet valve motive fluid connection, or (iii) the outlet valve chamber includes a motive fluid outlet valve actuation area in motive fluid communication with the outlet valve motive fluid connection.

21. The medical fluid pumping system of claim 20, wherein at least one of (i) the pump chamber includes a process fluid pump cavity chamber operable with the motive fluid pump actuation area, (ii) the inlet valve chamber includes a process fluid inlet valve seat operable with the motive fluid inlet valve actuation area, or (iii) the outlet valve chamber includes a process fluid outlet valve seat operable with motive fluid outlet valve actuation area.

22. The medical fluid pumping system of claim 19, wherein the pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection each include a motive fluid transfer boss extending from the medical fluid pump so as to be moved simultaneously to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure of the medical fluid chassis.