Invention Grant
- Patent Title: System and method of determining arterial blood pressure and ventricular fill parameters from ventricular blood pressure waveform data
- Patent Title (中): 从心室血压波形数据确定动脉血压和心室填充参数的系统和方法
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Application No.: US12112544Application Date: 2008-04-30
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Publication No.: US08211028B2Publication Date: 2012-07-03
- Inventor: Mustafa Karamanoglu , Tommy D. Bennett
- Applicant: Mustafa Karamanoglu , Tommy D. Bennett
- Applicant Address: US MN Minneapolis
- Assignee: Medtronic, Inc.
- Current Assignee: Medtronic, Inc.
- Current Assignee Address: US MN Minneapolis
- Agent Reed A. Duthler; Stephen W. Bauer
- Main IPC: A61B5/02
- IPC: A61B5/02

Abstract:
A system and method of determining hemodynamic parameters uses sensed ventricular blood pressure during a portion of ventricular pressure waveform following peak pressure. An estimated arterial diastolic pressure is based upon an amplitude of the sensed ventricular pressure corresponding to a time at which a first derivative of ventricular pressure as a function of time is at a minimum (dP/dtmin). Fill parameters such as isovolumetric relaxation constant, ventricular suction pressure, atrial kick pressure, and transvalve pressure gradient are derived from measured pressures representing minimum ventricular pressure, ventricular diastolic pressure, and diastasis pressure.
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