US PATENT SUBCLASS 600 / 515
.~.~.~.~ Detecting arrhythmia

Current as of: June, 1999
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600 /   HD   SURGERY

300  DF  DIAGNOSTIC TESTING {38}
481  DF  .~ Cardiovascular {6}
508  DF  .~.~ Heart {4}
509  DF  .~.~.~ Detecting heartbeat electric signal {10}
515.~.~.~.~ Detecting arrhythmia {3}
516  DF  .~.~.~.~.~> Variation in duration of segment of PQRST signal waveform (e.g., QRS complex, etc.) detected
517  DF  .~.~.~.~.~> Vertical variation of PQRST signal waveform (e.g., amplitude of QRS complex, etc.) detected
518  DF  .~.~.~.~.~> Tachycardia or fibrillation detected

DEFINITION

Classification: 600/515

Detecting arrhythmia:

(under subclass 509) Subject matter for detecting a disturbance in the rhythm of the heart electric signal.

(1) Note. The shape of a normal heartbeat electric signal

is illustrated below, segments of the waveform being designated by the letters which are used by cardiologists for their identification.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

76.12+, for complex wave analyzing apparatus, per se.