Patent · US Expired

Atrium-controlled heart pacemaker

US4714079A · kind A · utility

16Cited by

6References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Sven-Erik Hedberg · Kungsängen, SE
Anders Lekholm · Vingåker, SE
Anders Lindgren · Vallentuna, SE

Key dates

Filing date	Sep 24, 1986
Grant date	Dec 22, 1987
Priority date	—
Expiry date	Sep 24, 2006

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N1/3682
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An atrium-controlled heart pacemaker operates using set parameters including a smallest synchronous interval (SSI) between two stimulation pulses, a minimum atrial-ventricular delay time (AVmin) and a maximum atrial-ventricular delay time (AVmax). A control unit, dependent upon the appearance of an atrial signal, controls operation of the pacemaker such that the pacemaker operates with a variable pulse rate (DDD mode) when the atrial signal appears after a point in time SSI-AVmin, operates the pacemaker with a highest synchronous pulse rate when the atrial signal is between the points in time SSI-AVmin and SSI-AVmax, and causes no stimulation pulses to be emitted when the atrial signal appears before the point in time SSI-AVmax.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.