Devices and method for determining and monitoring a cardiac status of a patient by using PLVDT or PLVST parameters
US8998820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2009 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Jan 9, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an improved medical device and method for accurately and reliably determining a cardiac status of a patient. An implantable medical device, IMD, comprises a sensor arrangement adapted to sense signals related to mechanical activity of the heart and an activity level sensor arrangement adapted to sense an activity level of the patient. Further, the IMD calculates a percentage of left ventricular diastolic time (PLVDT) for a cardiac cycle corresponding to a relation between a diastolic time interval and a cardiac cycle time interval using the determined systolic and diastolic time intervals or a percentage of left ventricular systolic time (PLVST) for a cardiac cycle corresponding to a relation between a systolic interval time interval and a cardiac cycle time interval. A cardiac status is determined based on the calculated PLVDT (or PLVST) and on an activity level of the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.