公开(公告)号：EP0201990A3

公开(公告)日：1987-06-03

申请号：EP86301780

申请日：1986-03-12

申请人： INTERMEDICS, INC.

发明人： Baker, Ross G., Jr. ,  Calfee, Richard V. ,  Sanders, Richard S. ,  Vandegriff, Joe ,  Warren, Jay

IPC分类号： A61N01/36

CPC分类号： A61N1/3622

摘要： An implantable microprocessor-controlled dual chamber heart pacemaker is programmed to control the timing of the pacing of the ventricle in response to high rate atrial signals. The microprocessor operates in conjunction with an atrial timer to detect atrial signals which occur at a rate in excess of a predefined atrial rate limit. The microprocessor paces the ventricle at a predefined desirable demand rate and inhibits pacing of the atrium in response to the high rate atrial activity. The microprocessor also controls the timing of an atrial refractory interval which includes an absolute refractory portion during which atrial signals are not detected and a relative refractory portion during which atrial signals are detected but are not tracked. The combined absolute and relative atrial refractory portions insure that relatively high rate atrial signals are detected and spurious signals conducted from the ventricle are ignored.

公开(公告)号：EP0201990B1

公开(公告)日：1991-12-18

申请号：EP86301780.2

申请日：1986-03-12

申请人： INTERMEDICS, INC.

发明人： Baker, Ross G., Jr. ,  Calfee, Richard V. ,  Sanders, Richard S. ,  Vandegriff, Joe ,  Warren, Jay

IPC分类号： A61N1/36

CPC分类号： A61N1/3622

公开(公告)号：EP0201990A2

公开(公告)日：1986-11-20

申请号：EP86301780.2

申请日：1986-03-12

申请人： INTERMEDICS, INC.

发明人： Baker, Ross G., Jr. ,  Calfee, Richard V. ,  Sanders, Richard S. ,  Vandegriff, Joe ,  Warren, Jay

IPC分类号： A61N1/36

CPC分类号： A61N1/3622

摘要： An implantable microprocessor-controlled dual chamber heart pacemaker is programmed to control the timing of the pacing of the ventricle in response to high rate atrial signals. The microprocessor operates in conjunction with an atrial timer to detect atrial signals which occur at a rate in excess of a predefined atrial rate limit. The microprocessor paces the ventricle at a predefined desirable demand rate and inhibits pacing of the atrium in response to the high rate atrial activity. The microprocessor also controls the timing of an atrial refractory interval which includes an absolute refractory portion during which atrial signals are not detected and a relative refractory portion during which atrial signals are detected but are not tracked. The combined absolute and relative atrial refractory portions insure that relatively high rate atrial signals are detected and spurious signals conducted from the ventricle are ignored.