Pacemaker circuit and associated methods for generating electric

Details Pacemaker circuit and associated methods for generating electric Pacemaker circuit and associated methods for generating electric

1997-01-17

1998-11-17

Getzow, Scott M.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1362

Patent

active

058369813

ABSTRACT:
A DC-to-DC converter circuit is disclosed for use in a pacemaker. The DC-to-DC converter circuit is capable of producing a pulse burst and boosting the voltage of the pulse burst up to an effective pacing amplitude, thereby eliminating the need for the multiple pump capacitors and the output capacitor. The DC-to-DC converter circuit uses a transformer to amplify the battery voltage to the required pacing amplitude. By using a transformer, DC leakage current is eliminated without the use of a decoupling capacitor, thereby achieving lower pacing thresholds. Also, each patient may be individually tested to determine their response to high frequency pulse bursts and a "customized" pacing waveshape can be produced by varying the duty cycle, polarity or pulse burst of each stimulation signal. The DC-to-DC converter circuit also reduces the polarization effect of the tissue around the electrodes.

REFERENCES:
patent: 5366485 (1994-11-01), Kroll et al.
patent: 5620468 (1997-04-01), Mongeon et al.

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