ENDOSCOPIC PH-PROBE Russian patent published in 2005 - IPC

FIELD: medical engineering.

SUBSTANCE: device has measuring antimony electrode tightly connected to sealed polymer tube end by means of thin-walled metal bushing partially fixed in the polymer tube with polymer glue. The electrode is shaped as cylindrical ring having external diameter close to external diameter of the polymer tube. The device also has comparison chlorine-silver skin electrode and conductors connecting electrodes to the connector unit. Lesser tube portion protruding from sealed polymer tube end opening has length that is less than that of the antimony electrode. It is fixed therein with soldering. Internal cavities of the antimony electrode, bushing and polymer tube are sealed with dielectric polymer humidity-resistant material at the depth of not greater than 2-5 mm in the case of polymer tube. Antimony electrode end face has convex protrusion manufactured from humidity-resistant electric insulation polymer.

EFFECT: high accuracy in measuring acidity on mucous membrane surface.

1 dwg