Method and apparatus for automatically programming CRT devices
First Claim
1. An apparatus for programming an implantable medical device comprising:
- a programmer that provides operational parameters to the implantable medical device;
an impedance measuring device that measures an intra-thoracic impedance between two spaced apart electrodes and determines a programming parameter for a patient'"'"'s heart based on said intra-thoracic impedance; and
a calculator receiving said programming parameter and generating said operational parameter for said programmer.
1 Assignment
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Accused Products
Abstract
External or internal monitoring equipment is used to automatically determine optimal programming parameters for a CRT based on externally or internally derived measurements of cardiac performance, anisotropic myocardial deformation (AMD) or both. The ideal programming parameter, operational parameter, represents optimal interval timing between multiple electrodes within the CRT, and is generated by such a closed loop control system. The closed loop system may be semi-automatic and implement connectivity to external ultrasound equipment or externally derived measurements of transthoracic impedance. Preferably, the operational parameter is determined by a closed loop system using internally derived intracardiac and intrathoracic electrograms and impedance measurements that describe cardiac performance and electromechanical dysynchrony in real time. Such a CRT has a control system that automatically optimizes performance by a system of checks and balance.
113 Citations
16 Claims
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1. An apparatus for programming an implantable medical device comprising:
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a programmer that provides operational parameters to the implantable medical device; an impedance measuring device that measures an intra-thoracic impedance between two spaced apart electrodes and determines a programming parameter for a patient'"'"'s heart based on said intra-thoracic impedance; and a calculator receiving said programming parameter and generating said operational parameter for said programmer. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for programming an implantable medical device, comprising:
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a programmer that provides operational parameters to the implantable medical device; a monitor that measures myocardial strain of specific regions of a patient'"'"'s heart and determines a programming parameter for the patient'"'"'s heart based on the measured strain; and a calculator receiving said programming parameter and generating said operational parameter for said programmer.
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7. An apparatus for programming an implantable medical device, comprising:
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a programmer that provides operational parameters to the implantable medical device; a monitor that measures myocardial velocity from specific regions of a patient'"'"'s heart and determines a programming parameter for the patient'"'"'s heart based on said myocardial velocities; and a calculator receiving said programming parameter and generating said operational parameter for said programmer. - View Dependent Claims (8, 9, 10)
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11. An apparatus for programming implantable medical device comprising:
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equipment that monitors several programming parameters; a calculator that selects an optimal parameter from said programming parameter and generates an operational parameter for said implantable medical device based on said optimal parameter, wherein said programming parameters depend on one of strain or velocity. - View Dependent Claims (12)
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13. An apparatus for programming implantable medical device comprising:
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equipment that monitors several programming parameters; a calculator that selects an optimal parameter from said programming parameter and generates an operational parameter for said implantable medical device based on said optimal parameter, wherein said programming parameters are based on Doppler ultrasound quantification of velocity of multiple pre-selected myocardial regions during a cardiac cycle. - View Dependent Claims (14)
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15. An implantable medical device comprising:
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equipment that monitors a programming parameter; and a calculator that selects an optimal value for said programming parameter and uses said optimal value to generate an operational parameter, said operational parameter defining the normal mode of operation of said implantable medical device, wherein said equipment monitors an anisotropic myocardial deformation parameter and a cardiac performance parameter and said calculator selects the optimal value on both said anisotropic myocardial deformation and cardiac performance parameters. - View Dependent Claims (16)
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Specification