Multi-leg caliper with heart scale
US4936022A · kind A · utility
Inventor
Key dates
| Filing date | Dec 21, 1987 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Dec 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/166
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-leg caliper with heart scale allowing analysis over a variable plurality of heart beats for arrhythmia is taught. Briefly stated, a plurality of parallel members are pivotally connected to a second set of parallel members thereby forming a lattice structure. Points are disposed at one end of each of the first mentioned parallel members which are placed against certain events recorded on an ECG strip chart. Pivot points associated with the opposite ends of the pointed parallel members are placed against a scale which is suitably calibrated to indicate various heart beat criteria. Also disclosed is a method of analyzing information and characteristics contained on an electrocardiogram chart by placing an indicia chart adjacent a multi-leg caliper, placing the multi-leg caliper adjacent prominent events recorded on an electrocardiogram chart and comparing values on the indicia chart adjacent indicating portions on the multi-leg caliper, thereby determining the characteristics of the electrocardiogram chart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.