Dialysis system having disposable cassette and interface therefore
First Claim
Patent Images
1. A medical fluid flow control system comprising:
- an interface including a first pump area, the first pump area of the interface including a pneumatic actuator port and a gasket seal port;
a pumping cassette defining a pump chamber and including a flexible sheet, a pumping portion of the flexible sheet covering the pump chamber; and
a membrane gasket including a second pump area for mating with the first pump area, the second pump area including a blind section which covers the pneumatic actuator port when the gasket is mated with the interface, the second pump area further including an aperture, the aperture sized and positioned to seal around the gasket seal port, allowing a negative pressure to be applied through the gasket seal port to the flexible sheet of the pumping cassette.
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Abstract
A medical fluid flow control system includes an interface including a first pump area, the first pump area of the interface including a pneumatic actuator port and a gasket seal port; and a membrane gasket including a second pump area for mating with the first pump area, the second pump area including a blind section which covers the pneumatic actuator port when the gasket is mated with the interface, the second pump area further including an aperture, the aperture sized and positioned to seal around the gasket seal port, allowing a negative pressure to be applied through the gasket seal port to a flexible sheet of a pumping cassette.
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Citations
20 Claims
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1. A medical fluid flow control system comprising:
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an interface including a first pump area, the first pump area of the interface including a pneumatic actuator port and a gasket seal port; a pumping cassette defining a pump chamber and including a flexible sheet, a pumping portion of the flexible sheet covering the pump chamber; and a membrane gasket including a second pump area for mating with the first pump area, the second pump area including a blind section which covers the pneumatic actuator port when the gasket is mated with the interface, the second pump area further including an aperture, the aperture sized and positioned to seal around the gasket seal port, allowing a negative pressure to be applied through the gasket seal port to the flexible sheet of the pumping cassette. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical fluid flow control system comprising:
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an interface including a first valve area, the first valve area including a pneumatic actuator port and a gasket seal port; a pumping cassette defining a valve chamber and including a flexible sheet, a valve portion of the flexible sheet covering the valve chamber; and a membrane gasket including a second valve area for mating with the first valve area, the second valve area including a blind section which covers the pneumatic actuator port when the gasket is mated with the interface, the second valve area further including an aperture, the aperture sized and positioned to seal around the gasket seal port, allowing a negative pressure to be applied through the gasket seal port to the flexible sheet of the pumping cassette. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification