Medical interventional device with accelerometer for providing cardiac therapeutic functions
US5472453A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Jul 11, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/395
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical interventional device adapted to be implanted in the body of a patient provides a plurality of cardiac therapeutic functions including bradycardia pacing, rate adaptive pacing, antitachycardia pacing, cardioversion and defibrillation on demand. An accelerometer in or associated with the device senses accelerational and gravitational effects indicative of at least one of position, posture and physical activity of the patient, and generates an electrical signal representative of the position, posture and physical activity of the patient of which the sensed effect is representative. The accelerometer acts as a transducer to convert mechanical movement to an electrical output representative of such movement. Another sensor detects a physiologic parameter of the patient indicative of cardiac activity of the patient, and generates another electrical signal representative of the cardiac activity. An analyzer is responsive to both of the electrical signals for determining the occurrence of a cardiac dysrhythmia of the patient, and a controller responsive to the determination of cardiac dysrhythmia generates a cardiac therapy of the device for application to the patient's heart ap…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.