Dialysis system venting devices and related systems and methods
First Claim
Patent Images
1. A dialysis system, comprising:
- a dialyzer;
a fluid inlet line;
a venting device comprisinga housing defining a fluid chamber in fluid communication with the fluid inlet line, anda valve member disposed above the fluid chamber between a lower seat and an upper seat, the lower seat defining an aperture, and the upper seat defining an aperture;
a fluid outlet line in fluid communication with the venting device such that fluid exiting the venting device flows through the fluid outlet line; and
a pump comprising a member disposed within the fluid chamber, the pump being operable to draw fluid into the fluid chamber via the fluid inlet line using negative pressure and to force fluid out of the fluid chamber via the fluid outlet line using positive pressure.
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Abstract
This disclosure relates to dialysis venting devices and related methods. In some aspects, a dialysis system includes a fluid inlet line, a venting device in fluid communication with the fluid inlet line, and a fluid outlet line in fluid communication with the venting device. The venting device can include a housing defining a fluid chamber, a valve member disposed above the fluid chamber between a lower seat and an upper seat, and a pump that is operable to draw fluid into the fluid chamber from the fluid inlet line and to force fluid out of the fluid chamber into the fluid outlet line.
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Citations
34 Claims
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1. A dialysis system, comprising:
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a dialyzer; a fluid inlet line; a venting device comprising a housing defining a fluid chamber in fluid communication with the fluid inlet line, and a valve member disposed above the fluid chamber between a lower seat and an upper seat, the lower seat defining an aperture, and the upper seat defining an aperture; a fluid outlet line in fluid communication with the venting device such that fluid exiting the venting device flows through the fluid outlet line; and a pump comprising a member disposed within the fluid chamber, the pump being operable to draw fluid into the fluid chamber via the fluid inlet line using negative pressure and to force fluid out of the fluid chamber via the fluid outlet line using positive pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A dialysis system, comprising:
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a dialyzer; and a venting device comprising; a housing defining a chamber, a liquid inlet port, and a liquid outlet port; a reciprocatable member disposed within the housing and configured to change a pressure within the chamber as the reciprocatable member reciprocates; and a buoyant valve member disposed above the chamber between a lower seat and an upper seat, the lower seat defining an aperture, and the upper seat defining an aperture, wherein the buoyant member is configured to seal the aperture of the lower seat when the reciprocatable member is moved in a first direction and to seal the aperture of the upper seat when the reciprocatable member is moved in a second direction.
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29. A venting method, comprising:
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drawing dialysis fluid into a fluid chamber of a venting device by applying vacuum pressure to the fluid chamber, wherein gas is released from the dialysis fluid within the fluid chamber; forcing the gas out of the fluid chamber by applying positive pressure to the fluid chamber for a first period of time; and
thenforcing the dialysis fluid out of the fluid chamber by continuing to apply positive pressure to the fluid chamber for a second period of time. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification