Surgery – Truss – Pad
Patent
1981-09-22
1984-07-17
Cohen, Lee S.
Surgery
Truss
Pad
324154R, 324 62, A61B 505
Patent
active
044599951
ABSTRACT:
In accordance with the invention there is provided an electrical resistance measuring indicating device including a bridge network having on one side thereof a first resistance arm connected to a second resistance arm and on the other side thereof, first voltage arm connected to a second voltage arm, there being between the junction of the first and second resistance arms and the junction of the first and second arms are transisterized amplifier circuit and an undamped indicating means responsive to changes in the balance of the bridge networks so as to indicate or measure the resistance or variation in resistance of a subject such as a body are part connected to the network across one of the resistance arms. The indicating means includes a moving coil meter which includes a metal frame of zero conductivity having a meter coil wound thereon and an indicating needle coupled to the frame.
REFERENCES:
patent: 2827041 (1958-03-01), Pierson
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patent: 3290589 (1966-12-01), Hubbard
patent: 3452743 (1969-07-01), Rieke
patent: 3468302 (1969-09-01), Cowell
patent: 3772593 (1973-11-01), Sidhu
patent: 3841316 (1974-10-01), Meyer
patent: 4016870 (1977-04-01), Lock
patent: 4024472 (1977-05-01), Nador et al.
Conners Ron
McCormick John
Cohen Lee S.
Hubbard Lafayette R.
Sykes Angela D.
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