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US 2003/0229337 A1Published application
Implantable pressure-activated micro-valve
AssigneeRosemount Inc.
InventorDavid A. Broden
Life of this patent
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Abstract
An implantable pressure-activated microvalve is disclosed. The valve includes a chamber that can be coupled to an external reservoir. A deflectable diaphragm is fluidically coupled to the chamber and arranged such that pressure of an in vitro fluid will bear against the deflectable diaphragm. When the pressure exceeds a selected threshold, the diaphragm deflects and allows material within the chamber to mix with the in vitro fluid.
Claims12
An implantable pressure actuated valve comprising:
- a first layer having a recess therein;
- a deflectable diaphragm bonded to the first layer and having a deflectable portion disposed to deflect into the recess;
- a second layer partially bonded to the deflectable diaphragm and having a chamber therein, wherein the chamber is in fluidic communication with the diaphragm;
- wherein when the diaphragm deflects into the recess, at least a portion of the chamber is open to release a material.
1 more element
Dependencies are inferred from the claim text.