Long-life biomedical application device, particularly electrode,

Details Long-life biomedical application device, particularly electrode, Long-life biomedical application device, particularly electrode,

1981-12-22

1985-07-02

Cohen, Lee S.

Surgery

Truss

Pad

128803, A61B 504

Patent

active

045261768

ABSTRACT:
To separate electrolyte (70) within a chamber (66) formed beneath a dome-like housing (24) from a signal transmission connector (34) and thus prevent corrosion of the terminal portion (38, 40) exposed to the interior of the chamber by the electrolyte, the interior of the chamber (66) is subdivided into two chambers (166, 266) by enclosing within said chamber a plastic bag (101) or stretching a membrane (102) thereacross, the subdividing means (101, 102) being ruptured upon depression of the contact terminal (34) of the housing; the electrolyte is retained solely within the chamber (266, 266a) separate from the interior portion (38, 40) of the terminal so that the corrosive influence of the electrolyte is prevented from attacking the metal of the terminal prior to use of the electrode, and during storage. Preferably, the chamber (166, 166a) to which also the terminal is exposed may retain other liquids which are inert with respect to the electrode, and which, preferably, are also separated from the electrolyte, such as a surfactant ( 170) to, additionally, permit a wider choice of, respectively, electrolytes and surfactants without unintended leakage of electrolyte through the microporous membrane (76)closing off the housing.

REFERENCES:
patent: 3187745 (1965-06-01), Baum et al.
patent: 3340868 (1967-09-01), Darling
patent: 3580254 (1971-05-01), Stuart
patent: 3702613 (1972-11-01), Panico et al.
patent: 3763622 (1973-10-01), Stanley, Jr.
patent: 4079731 (1978-03-01), Danby
patent: 4117841 (1978-10-01), Perrotta et al.
patent: 4215696 (1980-08-01), Bremer et al.
patent: 4270544 (1981-06-01), Gilden et al.

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