Method and electrical resistance probe for detection of estrus i

Details Method and electrical resistance probe for detection of estrus i Method and electrical resistance probe for detection of estrus i

1977-11-17

1980-09-30

Marlo, George J.

Surgery

Truss

Pad

128738, 128642, A61B 505

Patent

active

042249490

ABSTRACT:
This invention is drawn to a bovine vaginal probe capable of measuring electrical resistance in a bovine vaginal tract with sufficient accuracy to allow detection of changes in electrical resistance indicative of estrus.
The electrodes of the probe are generally axially aligned on the surface of a generally cylindrical support. In the essentially axially parallel electrode configuration, in order to obtain the desired sensitivity where one set of electrodes are employed, the electrodes should be separated from each other by at least 45.degree. and preferably at least about 90.degree.. One preferred essentially axially parallel configuration employs two sets of electrodes, each separated by approximately 90.degree. so that two sets of resistance figures, ventral and dorsal can be obtained.

REFERENCES:
patent: 3313293 (1967-04-01), Chesebrough et al.
patent: 3339542 (1967-09-01), Howell
"Journal of Dairy Science", vol. 59, May 1976, pp. 982-985.
"Medical and Biology Engineering", vol. 7, pp. 341-343, Pergamon Press, 1969, printed in Great Britain.

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