Title:
心筋虚血を検出するシステムおよび方法
Document Type and Number:
Japanese Patent JP2005501618
Kind Code:
A
Abstract:
Techniques "AND SYSTEM (10)" for detection and treatment of myocardial ischemia are described that monitor both the electrical and dynamic mechanical activity of the heart to detect and verify the occurrence of myocardial ischemia in a more reliable manner. The occurrence of myocardial ischemia can be detected by monitoring changes in an electrical signal such as an ECG or EGM, and changes in dynamic mechanical activity of the heart. Dynamic mechanical activity can be represented, for example, by a heart acceleration signal or pressure signal. The electrical signal can be obtained from a set of implanted or external electrodes (16,18,20;22,24,26)" . The heart acceleration signal can be obtained from an single- or multiple-axis accelerometer (88,108)" and/or a pressure sensor deployed within or near the heart. The techniques correlate contractility changes detected by an accelerometer or pressure sensor with changes in the ST electrogram segment detected by the electrodes (16,18,20;22,24,26)" to increase the reliability of ischemia detection.
Inventors:
Shannon Dee, Nelson
Studler, Robert W
Sheldon, Todd Jay
Lee Styros
Studler, Robert W
Sheldon, Todd Jay
Lee Styros
Application Number:
JP2003524671A
Publication Date:
January 20, 2005
Filing Date:
August 30, 2002
Export Citation:
Assignee:
Medtronic Incorporated
International Classes:
A61B5/11; A61B5/296; A61N1/32; A61N1/362; A61N1/365; A61N1/368; (IPC1-7): A61N1/365; A61B5/04; A61B5/0408; A61B5/0452; A61B5/0478; A61B5/0492
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita