Patent ID: 9347912
Filing Date: 2016-05-24
CPC Classification: C12M,G01N,Y10T

Claim Text:
1. A sensor adapter for a noninvasive positioning of a sensor in a medium, said sensor adapter comprising: a) an accommodating channel, in which the sensor can be positioned and axially moved therein, said accommodating channel having an end region which is closed off by a semipermeable membrane, and b) a hollow cylindrical sealing structure, which is disposed within said accommodating channel coaxially with the longitudinal axis thereof and with which the sensor can be disposed gas-tight adjacent to the semipermeable membrane, the semipermeable membrane being elastically deformed in the longitudinal direction of the accommodating channel when contacted by the sensor, the hollow cylindrical sealing structure having: a peripheral groove disposed in a radial inner wall, and a sealing ring disposed in the peripheral groove, said sealing ring being shiftable in the axial direction of the sealing structure between a first position and a second position, the first position and the second position being disposed adjacent to one another in the axial direction of the hollow cylindrical sealing structure, the first position being closer than the second position to the membrane, and in which the depth of the peripheral groove in the radial direction of the sealing structure is different in each of the first and second positions, with the peripheral groove being deeper than the cross section of the sealing ring in the first position so that a gap is formed between the sealing ring and the radially adjacent wall of the peripheral groove through which air can escape, and in which the peripheral groove is not as deep as the cross section of the sealing ring in the second position, such that the sealing ring is compressed in the second position between the sensor and a radial inner wall of the groove, so that the volume of the accommodating channel between the sealing ring and the semipermeable membrane is closed off gas tight.