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Valve position sensor

  • US 9,132,034 B2
  • Filed: 10/01/2012
  • Issued: 09/15/2015
  • Est. Priority Date: 10/01/2012
  • Status: Active Grant
First Claim
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1. An IOP control device for implantation in an eye of a patient, comprising:

  • a housing sized for implantation into the eye of the patient and including an entrance port and an exit port;

    a membrane anchored within the housing in a manner forming a flow control chamber on a first side of the membrane and a fluid flow passageway on a second opposing side of the membrane, the flow control chamber including a flow control chamber pressure and the fluid flow passageway including a fluid flow passageway pressure, the membrane configured to affect flow through the fluid flow passageway from the entrance port to the exit port by deflecting in response to pressure differentials of the flow control chamber pressure and the fluid flow channel pressure acting on the opposing sides of the membrane; and

    a position sensor system configured to detect the position of the membrane including;

    a first conductive portion positioned on the membrane; and

    a second conductive portion positioned on the housing between the entrance port and the exit port, and positioned to selectively contact the first conductive portion to indicate the position of the membrane relative to the fluid flow passageway;

    wherein the first and second conductive portions are sized and shaped to form a seal that occludes flow through the fluid flow passageway when the first and second conductive portions are in contact.

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