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Valve system

  • US 10,197,180 B2
  • Filed: 05/04/2016
  • Issued: 02/05/2019
  • Est. Priority Date: 01/12/2009
  • Status: Active Grant
First Claim
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1. A valve system to control fluid flow through a fluid pathway in a disposable manifold, wherein the disposable manifold is configured to be inserted into a kidney dialysis system, the valve system having a first stable state and a second stable state and comprising:

  • a valve seat positioned in the disposable manifold, wherein the disposable manifold comprises blood flow paths and dialysate flow paths;

    a orifice closing member positioned in the disposable manifold opposite the valve seat, wherein the valve seat and orifice closing member define an orifice;

    a displacement member positioned in the kidney dialysis system and external to the disposable manifold; and

    a first magnet and a second magnet proximate the displacement member and positioned in the kidney dialysis system and external to the disposable manifold;

    wherein an input of energy modulates magnetic fields of the first magnet and the second magnet, which causes the displacement member to move in a direction towards the valve seat in the disposable manifold to effectuate the first state and in a direction away from the valve seat in the disposable manifold to effectuate the second state, and wherein maintenance of the first or the second state does not require energy input.

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