Separation of gas and liquid in membrane valves

Patent metadata

Field	Value
Publication number	US-9333115-B2
Application number	US-201213710016-A
Country	US
Kind code	B2
Filing date	Dec 10, 2012
Priority date	Dec 13, 2011
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A drainage device for implantation in an eye of a patient to treat an ocular condition is disclosed. The drainage device includes a housing, a multi-compartment flow control chamber, and a membrane. The housing includes an entrance port and an exit port connected by a fluid flow passageway. The membrane is disposed between the fluid flow passageway and the multi-compartment flow control chamber, which includes a first compartment and a second compartment in fluid communication with each other. The first and second compartments are structurally arranged to limit contact of gas with the membrane, which is disposed between the fluid flow passageway and first compartment. The membrane is configured to affect flow through the fluid flow passageway by deflecting in response to pressure in the flow control chamber.

First claim

I claim:

1. A drainage device for implantation in an eye of a patient to treat an ocular condition, comprising:
a housing including an entrance port and an exit port connected by a fluid flow passageway;
a flow control chamber within the housing including a first compartment and including a second compartment open to the first compartment;
a membrane disposed between the fluid flow passageway and the first compartment, the membrane configured to affect flow through the fluid f…

Assignees

• Alcon Res Ltd

Inventors

• Dos Santos Cesario P

Classifications

• A61M2039/2433

  Human Necessities · mapped topic

• A61F9/00781 Primary

  Human Necessities · mapped topic