Electrode cell assembly for the continuous determination of ion concentrations in living tissues
First Claim
1. An electrode cell assembly for the continuous determination of ion concentration in living tissues, said assembly comprising a measuring electrode including a hollow glass electrode, a steel tube surrounding said electrode, said electrode having a conical end projecting freely from said steel tube, said conical end being of low electrical resistance and constituted as an ion sensitive membrane, an internal reference electrode mounted axially in said glass electrode, a buffer solution in said hollow glass electrode, said reference electrode being immersed in said buffer solution, a housing surrounding said glass electrode and integrated therewith to define an annular chamber, an electrolyte in said annular chamber, a reference electrode in said annular chamber and inserted into said electrolyte, said housing merging with said conical end of the hollow glass electrode, membrane means supported by said housing in the region where the latter merges with the conical end of the glass electrode for contact with the living tissue when the conical end is brought into operative association with the living tissue, and anchoring means coupled to said steel tube and surrounding said reference electrode for retaining the measuring electrode in operative association with the living tissue.
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Abstract
An electrode cell assembly for the continuous determination of ion concentrations in living tissues, which cell assembly comprises a measuring electrode having an ion selective member, which is shaped in a way so that it can be introduced into the living tissue and which cell assembly, furthermore, has a reference electrode in a housing which is filled with an electrolyte and which housing of the reference electrode has a membrane which is in continuous contact with the surface, e.g., the skin or the tissue of the living being during the determination of the ion concentrations, so that the ion concentration can be continuously read off from a recording device with which the electrode cell assembly is connected.
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Citations
5 Claims
- 1. An electrode cell assembly for the continuous determination of ion concentration in living tissues, said assembly comprising a measuring electrode including a hollow glass electrode, a steel tube surrounding said electrode, said electrode having a conical end projecting freely from said steel tube, said conical end being of low electrical resistance and constituted as an ion sensitive membrane, an internal reference electrode mounted axially in said glass electrode, a buffer solution in said hollow glass electrode, said reference electrode being immersed in said buffer solution, a housing surrounding said glass electrode and integrated therewith to define an annular chamber, an electrolyte in said annular chamber, a reference electrode in said annular chamber and inserted into said electrolyte, said housing merging with said conical end of the hollow glass electrode, membrane means supported by said housing in the region where the latter merges with the conical end of the glass electrode for contact with the living tissue when the conical end is brought into operative association with the living tissue, and anchoring means coupled to said steel tube and surrounding said reference electrode for retaining the measuring electrode in operative association with the living tissue.
Specification