Medical fluid pumping system including pump and machine chassis mounting regime

Patent metadata

Field	Value
Publication number	US-10590924-B2
Application number	US-201916355141-A
Country	US
Kind code	B2
Filing date	Mar 15, 2019
Priority date	Jul 13, 2005
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

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.

First claim

The invention claimed is:

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 v

Assignees

• Baxter Int
• Baxter Healthcare Sa

Inventors

• Orr Troy J

Classifications

• Y10T137/7843

  Integral resilient member forms plural valves · CPC title

• A61M1/3667

  with assisted venous return · CPC title

• F04B45/0536

  the actuating fluid being controlled by one or more valves · CPC title

• A61M1/14

  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 title

• F04B53/109

  inlet and outlet valve forming one unit · CPC title