Actuator apparatus for a prepackaged fluid processing module having pump and valve elements operable in response to applied pressures

• US 4,479,760 A
• Filed: 12/28/1982
• Issued: 10/30/1984
• Est. Priority Date: 12/28/1982
• Status: Expired due to Term

• Current Assignee: Baxter Travenol Laboratories Incorporated
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: Bilstad, Arnold C., Brown, Richard I., Kruger, Robert J.
• Primary Examiner(s): Smith, Leonard E.
• Application Number:
  US06/453,920
• Time in Patent Office: 672 Days
• Field of Search: 417/394, 417/395, 417/479, 417/480, 417/510, 128/DIG. 3, 128/DIG. 12, 604/4, 604/5, 604/6, 604/152, 604/153, 604/246, 206/570, 206/571, 206/572, 206/364, 206/365, 206/366
• US Class Current: 417/395
• CPC Class Codes: A61M 1/3496 Plasmapheresis; Leucopheresis; Lymphopheresis A61M1/3472 takes precedence
• CPC Class Codes: A61M 1/362227 the interface providing means for actuating on functional elements of the cassette, e.g. plungers
• CPC Class Codes: A61M 1/36224 with sensing means or components thereof
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/362261 at least one cassette surface or portion thereof being flexible, e.g. the cassette having a rigid base portion with preformed channels and being covered with a foil
• CPC Class Codes: A61M 1/362262 Details of incorporated reservoirs
• CPC Class Codes: A61M 1/362264 the filter being a blood filter
• CPC Class Codes: A61M 1/362265 Details of valves
• CPC Class Codes: A61M 1/362266 Means for adding solutions or substances to the blood
• CPC Class Codes: A61M 1/3623 Means for actively controlling temperature of blood
• CPC Class Codes: A61M 2205/123 with incorporated reservoirs
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: Y10S 128/12 Pressure infusion

Abstract

A fluid processing apparatus for use in conjunction with a disposable fluid processing module of the type which includes an integral housing wherein fluid containers, tubing segments, and other components required in processing a fluid are contained, and wherein fluid communication between the containers, components and tubing segments is provided by a fluid circuit formed by a panel of the housing, and an overlying fluid-impermeable flexible sheet member. The processing apparatus includes an actuator station for receiving the module housing, and pneumatic actuator ports which apply pressures to pump and valve elements in the fluid circuit to circulate fluid through the system.

Claims

1. Fluid processing apparatus for use in conjunction with a fluid module of the type including a housing, a panel member including an outwardly depressed portion therein, and a relatively flexible fluid-impermeable sheet member within the housing overlying the panel member and forming in conjunction with the depressed portion a fluid circuit including an element responsive to displacement of a portion of said sheet member in response to an applied pneumatic pressure, said fluid processing apparatus comprising:

an actuator station for receiving and fixedly positioning said housing; and

actuator means in operative engagement with said flexible sheet member and including pneumatic port means for applying a pneumatic pressure to said sheet member portion to control fluid flow in the fluid circuit.

2. A fluid processing apparatus as defined in claim 1 wherein said fluid circuit element comprises a pump element responsive to an applied pneumatic pressure for urging fluid through the circuit, and wherein said pneumatic port means is operative for applying pneumatic pressure to said flexible sheet member to operate said pump element.

3. A fluid processing apparatus as defined in claim 1 wherein said panel member comprises alignment means for maintaining said sheet member location in operative alignment with said actuator means.

4. A fluid processing apparatus as defined in claim 1 wherein said housing includes said panel member and a side panel, the actuator apparatus includes and actuator station for receiving said housing, and said actuator station includes means for receiving the depressed portion of said panel.

5. A fluid processing apparatus as defined in claim 4 wherein said actuator station includes said pneumatic port means for applying a pneumatic pressure to said sheet member from within said housing, and wherein said side panel includes an aperture facilitating introduction of said pneumatic port means into said housing.

6. A fluid processing apparatus as defined in claim 5 wherein said actuator means includes a plurality of said pneumatic port means for contact with portions of said flexible sheet member.

7. Fluid processing apparatus for use in conjunction with a disposable flow module of the type including a housing having a bottom panel and at least one side panel, and a fluid-impervious sheet member within the housing overlying the bottom panel, the bottom panel including an outwardly depressed portion forming in conjunction with the overlying sheet member a fluid circuit, said fluid processing apparatus comprising:

an actuator station for receiving and fixedly positioning said processing module housing;

an actuator head within said actuator station arranged for movement between a position operatively engaging said bottom panel of said housing, and a position non-engaged to said bottom panel, said actuator head including at least one pressure actuator port; and

means for establishing a pressure differential at said actuator port when said actuator head is engaged to establish fluid flow through said fluid circuit.

8. A fluid processing apparatus as defined in claim 7 wherein said actuator head extends through an aperture in said side panel.

9. Fluid processing apparatus for use in conjunction with a fluid module of the type including a housing having a side panel with an aperture formed therein, a base panel including an outwardly depressed portion therein, and a relatively flexible fluid-impermeable sheet member overlying the base panel and forming in conjunction with the depressed portion a fluid circuit including an element actuable by a pressure applied to the sheet member, said fluid processing apparatus comprising:

an actuator station for receiving and fixedly positioning said housing, including means for receiving the depressed portion of the base panel; and

actuator means extending through the side panel aperture into the housing and including a pressure port assembly in operative engagement with said flexible sheet member for applying a pressure to said sheet member from within the housing to control fluid flow in the fluid circuit.

10. A fluid processing apparatus as defined in claim 9 wherein the circuit element of the fluid module is responsive to the displacement of a portion of the flexible sheet member in response to an applied pneumatic pressure, and said pressure port assembly includes pneumatic port means for applying pneumatic pressure to said sheet member.

11. A fluid processing apparatus as defined in claim 9 wherein said actuator means includes a plurality of pressure port assemblies for contact with portions of said flexible sheet member.

12. A fluid processing apparatus as defined in claim 9

wherein said pressure is applied by said pressure port assembly at a predetermined location on the sheet member of the fluid module, and

wherein said actuator station includes alignment means cooperating with the base panel for maintaining the sheet member location in operative alignment with said pressure port assembly.

13. A fluid processing apparatus as defined in claim 9

wherein the circuit element of the fluid module which is actuated by said pressure port assembly is a pump element.