US 12,072,257 B2
Implantable pressure sensor
David Mortimer Budgett, Auckland (NZ); Dixon Pok Chung Leung, Auckland (NZ); and John Daniel McCormick, Auckland (NZ)
Assigned to Kitea Health Limited, Auckland (NZ)
Filed by Kitea Health Limited, Auckland (NZ)
Filed on Jul. 14, 2022, as Appl. No. 17/864,484.
Application 17/864,484 is a continuation of application No. 16/462,216, granted, now 11,422,051, previously published as PCT/IB2017/057194, filed on Nov. 17, 2017.
Claims priority of application No. 726534 (NZ), filed on Nov. 18, 2016.
Prior Publication US 2022/0341803 A1, Oct. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01L 27/00 (2006.01); A61B 5/03 (2006.01); A61M 27/00 (2006.01)
CPC G01L 27/005 (2013.01) [A61B 5/03 (2013.01); A61B 5/031 (2013.01); A61M 27/00 (2013.01); A61M 27/006 (2013.01); G01L 27/00 (2013.01); A61B 2562/0247 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a housing enclosing a chamber and having at least one port that communicates with the chamber,
a pressure sensor receiving fluid pressure from the chamber,
the chamber having a compliance that exhibits a marked change in volumetric stiffness repeatably at a fixed pressure, wherein the chamber is formed between a first flexible wall portion and a second flexible wall portion, and
a sealed cavity divided from the chamber by the first flexible wall portion, such that an increasing pressure in the chamber causes increasing deflection of the first flexible wall portion, wherein the pressure sensor is within an enclosure sealed from the chamber by the second flexible wall portion.