Pressure manifold system for dialysis

• US 10,471,192 B2
• Filed: 03/22/2017
• Issued: 11/12/2019
• Est. Priority Date: 10/30/2007
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Chapman, Paul R., Childers, Robert W., Hecht, Gideon, Wellings, Anders
• Primary Examiner(s): Marcetich, Adam
• Application Number:
  US15/465,882
• Publication Number:
  US 20170189592A1
• Time in Patent Office: 965 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 1/1524 the interface providing means for actuating on functional elements of the cassette, e.g. plungers
• CPC Class Codes: A61M 1/155 with treatment-fluid pumping means or components thereof
• CPC Class Codes: A61M 1/1562 Details of incorporated reservoirs
• CPC Class Codes: A61M 1/1565 Details of valves
• CPC Class Codes: A61M 1/1621 Constructional aspects thereof semi-permeable membranes for separation processes characterised by their properties B01D69/00; semi permeable membranes characterised by their material B01D71/00
• CPC Class Codes: A61M 1/1649 with pulsatile dialysis fluid flow
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/281 Instillation other than by gravity
• CPC Class Codes: A61M 1/30 Single needle dialysis ; Reciprocating systems, alternately withdrawing blood from and returning it to the patient, e.g. single-lumen-needle dialysis or single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 1/3624 Level detectors; Level control
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 2205/42 Reducing noise
• CPC Class Codes: A61M 60/268 the displacement member being flexible, e.g. membranes, diaphragms or bladders
• CPC Class Codes: A61M 60/427 the force acting on the blood contacting member being hydraulic or pneumatic
• CPC Class Codes: A61M 60/508 Electronic control means, e.g. for feedback regulation
• CPC Class Codes: A61M 60/847 arranged in a cassette
• CPC Class Codes: A61M 60/857 Implantable blood tubes
• CPC Class Codes: A61M 60/892 Active valves, i.e. actuated by an external force
• CPC Class Codes: B01J 2219/00396 : Membrane valves
• CPC Class Codes: B01J 2219/00398 : in multiple arrangements
• CPC Class Codes: B01J 2219/00409 : Solenoids in combination with valves
• CPC Class Codes: B01J 2219/00412 : In multiple arrangements
• CPC Class Codes: F15B 1/02 : Installations or systems with accumulators
• CPC Class Codes: F15B 1/021 : used for damping
• CPC Class Codes: F15B 13/0807 : Manifolds
• CPC Class Codes: F15B 13/0814 : Monoblock manifolds
• CPC Class Codes: F15B 13/0817 : Multiblock manifolds
• CPC Class Codes: F15B 13/0821 : Attachment or sealing of modular units to each other
• CPC Class Codes: F15B 13/0825 : the modular elements being mounted on a common member, e.g. on a rail
• CPC Class Codes: F15B 13/0828 : characterised by sealing means of the modular units
• CPC Class Codes: F15B 13/0832 : Modular valves
• CPC Class Codes: F15B 13/0835 : Cartridge type valves
• CPC Class Codes: F15B 13/0842 : Monoblock type valves, e.g. with multiple valve spools in a common housing
• CPC Class Codes: F15B 21/006 : Compensation or avoidance of ambient pressure variation
• CPC Class Codes: F15B 21/008 : Reduction of noise or vibration
• CPC Class Codes: F16K 2099/0082 : Microvalves adapted for a particular use
• CPC Class Codes: F16K 2099/0086 : Medical applications
• CPC Class Codes: F16K 99/0042 : Electric operating means therefor
• CPC Class Codes: Y10T 137/86027 : Electric

Abstract

A medical fluid pneumatic manifold system includes a first plate including a plurality of apertures, a second plate attached to the first plate so as to form a plurality of pneumatic flowpaths sealed between the first plate and the second plate, a plurality of tubing connections and a plurality of pneumatic tubes connected to the plurality of tubing connections, the plurality of tubing connections placing the plurality of pneumatic tubes in pneumatic communication with the plurality of pneumatic flowpaths via the plurality of apertures of the first plate, and a pneumatic reservoir in pneumatic communication with the plurality of pneumatic flowpaths, the pneumatic reservoir configured to provide pneumatic pressure to the plurality of pneumatic tubes.

Claims

1. A medical fluid pneumatic manifold system comprising:

a first plate including a plurality of apertures;

a second plate attached to the first plate so as to form a plurality of pneumatic flowpaths sealed between the first plate and the second plate;

a plurality of tubing connections and a plurality of pneumatic tubes connected to the plurality of tubing connections, the plurality of tubing connections placing the plurality of pneumatic tubes in pneumatic communication with the plurality of pneumatic flowpaths via the plurality of apertures of the first plate;

a pneumatic portion of a medical fluid pumping structure located external to the first and second plates and in pneumatic communication with the pneumatic tubes; and

a pneumatic reservoir in pneumatic communication with the plurality of pneumatic flowpaths, the pneumatic reservoir configured to provide pneumatic pressure to the plurality of pneumatic tubes and the pneumatic portion of the medical fluid pumping structure.

2. The medical fluid pneumatic manifold system of claim 1, wherein the first plate defines passageways that form at least part of the plurality of pneumatic flowpaths when the first plate is attached to the second plate.

3. The medical fluid pneumatic manifold system of claim 1, wherein the plurality of tubing connections are provided by at least one header mounted to the first or second plate.

4. The medical fluid pneumatic manifold system of claim 1, wherein the first plate is sealed to the second plate via a gasket.

5. The medical fluid pneumatic manifold system of claim 4, wherein the gasket seals around at least part of the plurality of pneumatic flowpaths when the first plate is attached to the second plate.

6. The medical fluid pneumatic manifold system of claim 1, which includes an o-ring seal placed around each aperture in the first plate for airtight pneumatic communication between each pneumatic tube and a corresponding one of the pneumatic flowpaths.

7. The medical fluid pneumatic manifold system of claim 1, wherein the plurality of tubing connections are mounted directly to the first plate.

8. A medical fluid pneumatic manifold system comprising:

a first plate defining a plurality of apertures;

a second plate attached to the first plate so as to form a plurality of pneumatic flowpaths sealed between the first plate and the second plate;

a plurality of tubing connections and a plurality of pneumatic tubes connected to the plurality of tubing connections, the plurality of tubing connections placing the plurality of pneumatic tubes in pneumatic communication with the plurality of pneumatic flowpaths via the plurality of apertures of the first plate;

a pneumatic portion of a medical fluid pumping structure located external to the first and second plates and in pneumatic communication with the pneumatic tubes; and

a plurality of electrically actuated pneumatic valves in communication with the plurality of pneumatic flowpaths, the plurality of electrically actuated pneumatic valves configured to allow pneumatic pressure to be applied to the plurality of pneumatic tubes and the pneumatic portion of the medical fluid pumping structure.

9. The medical fluid pneumatic manifold system of claim 8, wherein the first plate defines passageways that form at least part of the pneumatic flowpaths when the first plate is attached to the second plate.

10. The medical fluid pneumatic manifold system of claim 8, wherein the plurality of tubing connections are provided by at least one header mounted to the first or second plate.

11. The medical fluid pneumatic manifold system of claim 8, which includes a pneumatic reservoir storing pneumatic pressure for the plurality of electrically actuated pneumatic valves to allow pneumatic pressure to be applied to the plurality of pneumatic tubes.

12. The medical fluid pneumatic manifold system of claim 11, wherein the pneumatic reservoir is placed in pneumatic communication with the plurality of pneumatic flowpaths via a plurality of bores in at least one of the first plate or the second plate.

13. The medical fluid pneumatic manifold system of claim 8, which includes a gasket sealed between the first plate and the second plate.

14. The medical fluid pneumatic manifold system of claim 8, which includes a printed circuit board attached to the first plate for control of the electrically actuated pneumatic valves.

15. A medical fluid pneumatic manifold system comprising:

a first plate defining a plurality of apertures;

a second plate attached to the first plate so as to form a plurality of pneumatic flowpaths sealed between the first plate and the second plate;

a gasket sealed between the first plate and the second plate;

a plurality of tubing connections and a plurality of pneumatic tubes connected to the plurality of tubing connections, the plurality of tubing connections placing the plurality of pneumatic tubes in pneumatic communication with the plurality of pneumatic flowpaths via the plurality of apertures of the first plate; and

a pneumatic portion of a medical fluid pumping structure located external to the first and second plates and in pneumatic communication with the pneumatic tubes.

16. The medical fluid pneumatic manifold system of claim 15, which includes a plurality of o-ring seals sealing the plurality of apertures for airtight pneumatic communication between the plurality of pneumatic tubes and the plurality of pneumatic flowpaths.

17. The medical fluid pneumatic manifold system of claim 15, wherein the gasket seals around at least part of the plurality of pneumatic flowpaths when the first plate is attached to the second plate.

18. The medical fluid pneumatic manifold system of claim 15, wherein the gasket is approximately a same length and width as the first plate and the second plate.

19. The medical fluid pneumatic manifold system of claim 15, which includes at least one fastener compressing the gasket between the first and second plates.

20. The medical fluid pneumatic manifold system of claim 15, wherein the first plate defines passageways that form at least part of the pneumatic flowpaths when the first plate is attached to the second plate.