METHOD FOR PORTAL AND/OR HEPATIC PRESSURE DETECTION, AND SYSTEM FOR PORTAL HYPERTENSION TRACKING Russian patent published in 2017 - IPC A61B5/215 

FIELD: medicine.

SUBSTANCE: devices and methods are provided that are generally related to vibration sensors for fluid external pressure measurement, namely to sensors configured to be implanted. The proposed devices and methods are particularly suitable for implantation into the body of an animal or a human to monitor physiological conditions, such as portal and/or hepatic venous pressure, and for enabling frequent venous pressure remote polling using the resonant frequency of the implanted sensor. Sensitive devices are relatively small compared to known devices for fluid pressure measurement and can be implanted into the portal-hepatic venous system, whereas the known devices are too large. The small size of the device is achieved by application of a thickened sensitive membrane as compared with the known devices, and by limiting the size of the additional elements relative to the sensitive membrane size. The more thickened sensor element also eliminates the need to use a plurality of sensor arrays and maintains high accuracy and durability of the sensing device.

EFFECT: system for data acquisition, processing and display provides reading of the measured pressure and, in particular, suitable for detection of portal hypertension in patients with liver disease.

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