Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1995-11-16
1997-12-30
Jastrzab, Jeffrey R.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
331 1R, 331 48, A61N 102
Patent
active
057024260
ABSTRACT:
Apparatus and methods for adjusting an electrical parameter of an electronic device, notably of an active implantable medical device such as a pacemaker or cardiac defibrillator, and an implementing monolithic integrated circuit for conducting the adjustment. The device includes an oscillator circuit (3-6) having an adjustable component (5, 6) determining its period of oscillation, this adjustable component including one or more additional components (6) a Switch circuit (7, 8) for selectively commuting these additional components; a memory register (9) operable to preserve a digital value determining the state of the additional component commutations; a counter device (11) for measuring a relationship between a period (SOSC) produced by the oscillator circuit (as its period of oscillation may be adjusted by commutation of the additional components) and a fixed reference period (CK); a comparator (12) for determining a difference between the relationship measured by the counter and a predetermined control value (NPC); and a code generator (10) to modify the digital value preserved in the register until a value minimizing the difference determined by the comparator is found.
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Dal Molin Renzo
Pons Pascal
ELA Medical S.A.
Evanisko George R.
Jastrzab Jeffrey R.
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