Baroreflex Activation Device for Heart Failure Management
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Solution Overview
Problem
Current treatments for hypertension and heart failure, including drug therapies and surgical procedures, are often ineffective and costly, with significant side effects and morbidity, and lack a controlled approach for managing vascular stiffness and fluid distribution in the body.
Innovation Solution
The development of devices and methods that utilize impedance sensors to measure and monitor cardiovascular function, providing real-time central pressure waveform data for diagnostic and therapeutic feedback, particularly through baroreflex activation therapy to control fluid distribution and vascular stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drug therapies and surgical procedures are used to treat hypertension and heart failure, then some therapeutic effect is achieved, but the treatments are often ineffective, costly, and have significant side effects and morbidity
Solution Approach 1:
The patent replaces pharmacological and surgical interventions with a mechanical/physical approach using an implantable device that applies mechanical pressure to the carotid sinus baroreceptors. This mechanical stimulation activates the baroreflex pathway to regulate blood pressure and cardiac function, substituting chemical drugs and invasive surgery with a controlled physical stimulus that avoids medication side effects and surgical morbidity.
Solution Approach 2:
The patent introduces an intermediary device that acts as a mediator between the external control system and the body's natural regulatory mechanisms. The implantable device with pressure applicator serves as an intermediary to stimulate baroreceptors, which then trigger the body's endogenous baroreflex response through neural pathways, avoiding direct pharmacological intervention and its associated side effects.
2Ease of operation
If current treatments are used for hypertension and heart failure, then some therapeutic effect is achieved, but the treatments lack a controlled approach for managing vascular stiffness and fluid distribution
Solution Approach 1:
The patent implements a closed-loop feedback system where the implantable device continuously monitors physiological parameters and adjusts the pressure applied to baroreceptors accordingly. The device receives feedback from pressure sensors and other physiological monitors, processes this information, and modulates the stimulatory pressure to maintain optimal blood pressure and fluid distribution, providing precise controlled management of vascular stiffness and fluid balance.
Solution Approach 2:
The patent employs dynamic adjustment capabilities where the pressure application to baroreceptors is not fixed but continuously adapted based on real-time physiological conditions. The device can vary the magnitude, duration, and timing of pressure pulses to baroreceptors, enabling dynamic control of the baroreflex response to effectively manage changing vascular stiffness and fluid distribution requirements.
3Measurement precision
If impedance sensors are used to measure and monitor cardiovascular function, then real-time central pressure waveform data is provided for diagnostic and therapeutic feedback, but the device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single implantable device platform. The device combines pressure application to baroreceptors, impedance sensing for fluid monitoring, pressure waveform measurement, and therapeutic delivery all within one implantable unit. This multi-functionality reduces the need for multiple separate devices and procedures while providing comprehensive real-time monitoring and therapy delivery.
Solution Approach 2:
The patent merges the diagnostic and therapeutic functions into a unified system. The implantable device combines the pressure applicator for baroreceptor stimulation with impedance sensors and pressure waveform sensors in a single integrated unit, allowing simultaneous measurement and therapy delivery. This consolidation simplifies the overall system architecture compared to using separate diagnostic and therapeutic devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for precise and controlled therapy, reducing vascular stiffness, improving cardiac function, and alleviating symptoms of heart failure by modulating fluid distribution and reducing the workload on the heart, with demonstrated benefits in reducing mortality and morbidity markers.
Implementation Method 1
an impedance sensor is provided on, in or proximate a blood vessel to obtain waveform data of blood movement in the vessel
Implementation Method 2
stimulating a baroreflex with a baroreflex activation device to improve the symptoms and conditions associated with heart failure
Data Source
AI summary
Devices and methods of use are described for identification, treatment, and/or management of heart failure and/or associated conditions. An exemplary device may include a first fluid status monitoring circuit configured to monitor a first fluid status indicator of a pulmonary fluid status associated with pulmonary edema, a second fluid status monitoring circuit configured to monitor a separate and different second fluid status indicator of a non-pulmonary fluid status, and a controller coupled to the first and second fluid status monitoring circuits, and a therapy circuit coupled to the controller. The controller is configured to use information about the first and second fluid status indicators to determine a therapy control signal to control a therapy, and the therapy circuit is configured to provide therapy in response to the therapy control signal to adjust at least one of the pulmonary fluid status or the non-pulmonary fluid status.