Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical energy applicator
Patent
1990-08-06
1994-01-04
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical energy applicator
A61N 105
Patent
active
052751716
ABSTRACT:
A physiological sensor forms an integral part of an implantable stimulation/sensing lead used with a medical device, such as a pacemaker. The stimulation/sensing lead includes a tip electrode to which a distal end of a first conductor is connected. The sensor is inserted in series with respective portions of a second conductor. A distal end of the second conductor/sensor is connected to the tip electrode. Operation of the stimulation/sensing lead occurs unipolarly through the first conductor only, with a signal return path being provided through the tip electrode and conductive body fluids. The sensor does not form part of the electrical circuit to the tip electrode, and there are no electrical connections or breaks in the insulation along the entire length of the first conductor. Electrical contact with the sensor is achieved during a time window when the stimulation/sensing lead is not being used by applying an appropriate operating signal, and measuring the resultant output signal, at the proximal ends of the first and second leads.
REFERENCES:
patent: 4202339 (1980-05-01), Wirtzfeld et al.
patent: 4399820 (1983-08-01), Wirtzfeld et al.
patent: 4750495 (1988-06-01), Moore et al.
patent: 4791935 (1988-12-01), Baudino et al.
patent: 4815469 (1989-03-01), Cohen et al.
A Practical Guide to Cardiac Pacing, Moses et al., pp. 32-35, Little, Brown & Co., Boston/Toronto 1983.
Getzow Scott M.
Kamm William E.
Miller Leslie S.
Siemens Pacesetter, Inc.
Weinberg Lisa P.
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