Sensor in vivo measurement of osmotic changes
First Claim
1. Sensor for measuring a condition of body fluids comprising a sensor element implanted in said body being in radio communication with a receiver unit outside said body, wherein said sensor element implanted in said body comprises at least one differential pressure sensor arranged with at least two chambers on each side of said pressure sensor, where each chamber is confined, in one end by one side of said pressure sensor each, and on the other end by a semipermiable membrane each towards the surroundings.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention teaches a method, system and units for measuring changes in blood during a longer period of time in vivo with a patient by measuring diffusivity of solvent. A differential pressure sensor is arranged on a silicon wafer or beam comprising resistors being in communication with fluids in two chambers via semipermable membranes enabling measuring of two components in said blood by tracking changes over time.
23 Citations
6 Claims
- 1. Sensor for measuring a condition of body fluids comprising a sensor element implanted in said body being in radio communication with a receiver unit outside said body, wherein said sensor element implanted in said body comprises at least one differential pressure sensor arranged with at least two chambers on each side of said pressure sensor, where each chamber is confined, in one end by one side of said pressure sensor each, and on the other end by a semipermiable membrane each towards the surroundings.
Specification