Door assembly for positioning a pump cassette against a control assembly

• US 9,121,403 B2
• Filed: 07/15/2013
• Issued: 09/01/2015
• Est. Priority Date: 10/30/2003
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Lanigan, Richard J., Dale, James D.
• Primary Examiner(s): Freay, Charles
• Assistant Examiner(s): DWIVEDI, VIKANSHA S
• Application Number:
  US13/942,282
• Publication Number:
  US 20140010691A1
• Time in Patent Office: 778 Days
• Field of Search: 417/477.2, 604151-155
• US Class Current: 1/1
• CPC Class Codes: A61L 2/0088 Liquid substances
• CPC Class Codes: A61L 2/24 Apparatus using programmed or automatic operation
• CPC Class Codes: A61M 1/0213 with isolated sections of the tube used as additive reservoirs
• CPC Class Codes: A61M 1/0272 Apparatus for treatment of blood or blood constituents prior to or for conservation, e.g. freezing, drying or centrifuging
• CPC Class Codes: A61M 1/0281 Apparatus for treatment of blood or blood constituents prior to transfusion, e.g. washing, filtering or thawing
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/3687 Chemical treatment A61M1/3675 takes precedence
• CPC Class Codes: A61M 2205/125 with incorporated filters
• CPC Class Codes: B01F 23/451 by injecting one liquid into another
• CPC Class Codes: B01F 23/49 Mixing systems, i.e. flow charts or diagrams
• CPC Class Codes: B01F 25/105 Mixing heads, i.e. compact mixing units or modules, using mixing valves for feeding and mixing at least two components
• CPC Class Codes: B01F 25/60 Pump mixers, i.e. mixing within a pump
• CPC Class Codes: B01F 33/81 Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
• CPC Class Codes: B01F 33/811 in two or more consecutive, i.e. successive, mixing receptacles or being consecutively arranged
• CPC Class Codes: B01F 35/711 for feeding a mixture of components, i.e. solids in liquid, solids in a gas stream
• CPC Class Codes: B01F 35/715 Feeding the components in several steps, e.g. successive steps
• CPC Class Codes: B01F 35/8823 using diaphragms or bellows
• CPC Class Codes: F04B 13/02 of two or more fluids at the same time
• CPC Class Codes: F04B 23/02 having reservoirs
• CPC Class Codes: F04B 23/06 the pumps being all of reciprocating positive-displacement type
• CPC Class Codes: F04B 43/0009 : Special features
• CPC Class Codes: F04B 43/06 : Pumps having fluid drive
• CPC Class Codes: F04B 49/22 : by means of valves F04B49/03 takes precedence
• CPC Class Codes: F04B 53/06 : Venting
• CPC Class Codes: F04B 53/16 : Casings; Cylinders; Cylinder liners or heads; Fluid connections
• CPC Class Codes: F04B 53/22 : Arrangements for enabling ready assembly or disassembly
• CPC Class Codes: G05D 11/132 : by controlling the flow of the individual components G05D11/133 takes precedence
• CPC Class Codes: Y02A 50/30 : Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
• CPC Class Codes: Y10T 137/0329 : Mixing of plural fluids of diverse characteristics or conditions
• CPC Class Codes: Y10T 137/0352 : Controlled by pressure
• CPC Class Codes: Y10T 137/86131 : Plural
• CPC Class Codes: Y10T 137/87652 : With means to promote mixing or combining of plural fluids
• CPC Class Codes: Y10T 29/53 : Means to assemble or disassemble
• CPC Class Codes: Y10T 292/0911 : Hooked end
• CPC Class Codes: Y10T 292/212 : With expanding or contracting means
• CPC Class Codes: Y10T 292/438 : Spring-arm catch

Abstract

A door assembly that includes a receptacle for a pump cassette can be closed to position the cassette into contact with a control assembly for operating the pump cassette. A force assembly having a movable member is capable of applying force to the pump cassette to press the pump cassette against the control assembly. The movable member may be an expandable member, such as a bladder.

Claims

1. A door assembly for loading a cassette onto a cassette control assembly comprising:

a door hingedly connected to a housing that encloses the cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the cassette;

the movable member arranged to provide a force to press the cassette against the cassette control assembly when the door is in a closed position, wherein

the cassette receptacle is arranged to receive the cassette when the door is in an open position, and is arranged to align the cassette with the cassette control assembly when the door is in the closed position, and

wherein the cassette receptacle comprises brackets to contain the cassette by contacting a peripheral structure of the cassette when the cassette is inserted in the receptacle.

2. The door assembly of claim 1, wherein the peripheral structure of the cassette comprises peripheral ribs of the cassette.

3. A door assembly for loading a cassette onto a cassette control assembly comprising:

a door hingedly connected to a housing that encloses the cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the cassette;

the movable member arranged to provide a force to press the cassette against the cassette control assembly when the door is in a closed position, wherein

the cassette receptacle is arranged to receive the cassette when the door is in an open position, and is arranged to align the cassette with the cassette control assembly when the door is in the closed position,

the door assembly further comprising a cassette orientation feature on the inside portion of the door arranged to permit closure of the door only if the cassette is installed in the receptacle in a pre-determined orientation.

4. The door assembly of claim 3, wherein the cassette orientation feature comprises a tab.

5. The door assembly of claim 4, wherein the tab is configured to make contact with a top portion of the installed cassette in order to limit vertical movement of the cassette when the door is in the closed position.

6. A door assembly for loading a cassette onto a cassette control assembly comprising:

a door hingedly connected to a housing that encloses the cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the cassette;

the movable member arranged to provide a force to press the cassette against the cassette control assembly when the door is in a closed position, wherein

the cassette receptacle is arranged to receive the cassette when the door is in an open position, and is arranged to align the cassette with the cassette control assembly when the door is in the closed position,

the door assembly further comprising a door latch mounted on the inside portion of the door, wherein the door latch is configured to engage a corresponding engagement feature on the housing to prevent the door from opening upon application of force by the movable member.

7. The door assembly of claim 6, wherein the door latch is connected to the handle so that the latch may be disengaged from the engagement feature when the movable member is not applying a force and the handle is actuated, allowing the door to be opened.

8. A door assembly for loading a pneumatic pump cassette onto a pneumatic cassette control assembly comprising:

a door hingedly connected to a housing that encloses the pneumatic cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the pneumatic pump cassette;

the movable member arranged to provide a force to press the pneumatic pump cassette against the pneumatic cassette control assembly when the door is in a closed position, wherein the cassette receptacle is arranged to receive the pneumatic pump cassette when the door is in an open position, and is arranged to align the pneumatic pump cassette with the cassette control assembly when the door is in the closed position, and

wherein the receptacle comprises brackets to contain the pneumatic pump cassette by contacting a peripheral structure of the pneumatic pump cassette when the pneumatic pump cassette is inserted in the receptacle.

9. The door assembly of claim 8, wherein the peripheral structure of the pneumatic pump cassette comprises peripheral ribs of the pneumatic pump cassette.

10. A door assembly for loading a pneumatic pump cassette onto a pneumatic cassette control assembly comprising:

a door hingedly connected to a housing that encloses the pneumatic cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the pneumatic pump cassette;

the movable member arranged to provide a force to press the pneumatic pump cassette against the pneumatic cassette control assembly when the door is in a closed position, wherein

the cassette receptacle is arranged to receive the pneumatic pump cassette when the door is in an open position, and is arranged to align the pneumatic pump cassette with the cassette control assembly when the door is in the closed position,

the door assembly further comprising a pneumatic pump cassette orientation feature on the inside portion of the door arranged to permit closure of the door only if the pneumatic pump cassette is installed in the receptacle in a pre-determined orientation.

11. The door assembly of claim 10, wherein the pneumatic pump cassette orientation feature comprises a tab.

12. The door assembly of claim 11, wherein the tab is configured to make contact with a top portion of the installed pneumatic pump cassette in order to limit vertical movement of the pneumatic pump cassette when the door is in the closed position.

13. A door assembly for loading a pneumatic pump cassette onto a pneumatic cassette control assembly comprising:

a door hingedly connected to a housing that encloses the pneumatic cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the pneumatic pump cassette;

the movable member arranged to provide a force to press the pneumatic pump cassette against the pneumatic cassette control assembly when the door is in a closed position, wherein

the cassette receptacle is arranged to receive the pneumatic pump cassette when the door is in an open position, and is arranged to align the pneumatic pump cassette with the cassette control assembly when the door is in the closed position,

the door assembly further comprising a door latch mounted on the inside portion of the door, wherein the door latch is configured to engage a corresponding engagement feature on the housing to prevent the door from opening upon application of force by the movable member.

14. The door assembly of claim 13, wherein the door latch is connected to the handle so that the latch may be disengaged from the engagement feature when the movable member is not applying a force and the handle is actuated, allowing the door to be opened.

15. A door assembly for loading a pneumatic pump cassette onto a pneumatic cassette control assembly comprising:

a door hingedly connected to a housing that encloses the pneumatic cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the pneumatic pump cassette;

the movable member arranged to provide a force to press the pneumatic pump cassette against the pneumatic cassette control assembly when the door is in a closed position, wherein

the cassette receptacle is hingedly connected to the inside portion of the door, and is arranged to;

receive the pneumatic pump cassette when the door is in an open position,

align the pneumatic pump cassette with the pneumatic cassette control assembly when the door is in the closed position, and

move away from the pneumatic cassette control assembly and the movable member when the door is opened, and;

wherein the receptacle comprises brackets to contain the pneumatic pump cassette by contacting a peripheral structure of the pneumatic pump cassette when the pneumatic pump cassette is inserted in the cassette receptacle.

16. The door assembly of claim 15, wherein the peripheral structure of the pneumatic pump cassette comprises peripheral ribs of the pneumatic pump cassette.

17. A door assembly for loading a pneumatic pump cassette onto a pneumatic cassette control assembly comprising:

a door hingedly connected to a housing that encloses the pneumatic cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the pneumatic pump cassette;

the movable member arranged to provide a force to press the pneumatic pump cassette against the pneumatic cassette control assembly when the door is in a closed position, wherein the cassette receptacle is hingedly connected to the inside portion of the door, and is arranged to;

receive the pneumatic pump cassette when the door is in an open position,

align the pneumatic pump cassette with the pneumatic cassette control assembly when the door is in the closed position, and

move away from the pneumatic cassette control assembly and the movable member when the door is opened;

the door assembly further comprising a cassette orientation feature on the inside portion of the door arranged to permit closure of the door only if a pneumatic pump cassette is installed in the cassette receptacle in a pre-determined orientation.

18. The door assembly of claim 17, wherein the cassette orientation feature comprises a tab.

19. The door assembly of claim 18, wherein the tab is configured to make contact with a top portion of an installed pneumatic pump cassette in order to limit vertical movement of the cassette when the door is in the closed position.

20. A door assembly for loading a pneumatic pump cassette onto a pneumatic cassette control assembly comprising:

a door hingedly connected to a housing that encloses the pneumatic cassette control assembly, an outside portion of the door including a handle and an inside portion of the door comprising a movable member and a cassette receptacle;

the cassette receptacle mounted on the inside portion of the door and arranged to hold the pneumatic pump cassette;

the movable member arranged to provide a force to press the pneumatic pump cassette against the pneumatic cassette control assembly when the door is in a closed position, wherein the cassette receptacle is hingedly connected to the inside portion of the door, and is arranged to;

receive the pneumatic pump cassette when the door is in an open position,

align the pneumatic pump cassette with the pneumatic cassette control assembly when the door is in the closed position, and

move away from the pneumatic cassette control assembly and the movable member when the door is opened;

the door assembly further comprising a door latch mounted on the inside portion of the door, wherein the door latch is configured to engage a corresponding engagement feature on the housing to prevent the door from opening upon application of force by the movable member.

21. The door assembly of claim 20, wherein the door latch is connected to the handle so that the latch may be disengaged from the engagement feature when the movable member is not applying a force and the handle is actuated, allowing the door to be opened.