Mechanical Wave Sensor for Prosthetic Valve Actuator Detachment Detection
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Solution Overview
Problem
Current prosthetic valve systems lack a reliable mechanism to ensure proper detachment of the actuation mechanism after implantation, leading to potential extraction of the valve along with the actuator, which is not detected effectively.
Innovation Solution
A prosthetic valve actuator detachment detection system that includes a mechanical wave sensor, such as a sound or vibration sensor, to determine if the actuator has detached from the frame, utilizing a detection module to analyze outputs and provide an indication of detachment or breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuation mechanism is detached from the prosthetic valve after implantation, then the valve can be properly implanted at the desired site, but the detachment status cannot be reliably detected
Solution Approach 1:
The patent replaces mechanical detection methods with acoustic sensing. A mechanical wave sensor detects acoustic signals generated by the detachment event, converting a mechanical/physical detection problem into an acoustic field-based solution. This allows non-contact detection of the detachment status without adding complex mechanical linkages.
Solution Approach 2:
The patent introduces an acoustic field as an intermediary between the detachment event and the detection system. The acoustic signal serves as a mediator that carries information about the detachment status from the actuation mechanism to the sensor, enabling indirect but reliable detection without direct mechanical coupling.
2Ease of operation
If the actuator is releasably connected to the frame for expansion, then the valve can be expanded to desired diameter, but improper detachment may cause extraction of valve with actuator
Solution Approach 1:
The patent implements a feedback mechanism where the acoustic sensor continuously monitors the actuation mechanism and provides real-time information about detachment status. This feedback loop allows the system to detect when the actuator has been properly detached and confirm successful implantation, preventing premature extraction.
Solution Approach 2:
The patent performs preliminary detection of detachment status before finalizing the implantation process. By detecting acoustic signals that indicate proper detachment beforehand, the system can confirm readiness for extraction without risking valve removal with the actuator still attached.
3Loss of information
If a mechanical wave sensor is added to detect detachment, then detachment status can be detected, but the device complexity increases
Solution Approach 1:
The patent designs the acoustic sensor system to serve multiple functions: detecting detachment status, monitoring actuation mechanism integrity, and providing feedback for successful implantation. This multi-functionality justifies the added complexity by eliminating the need for separate detection systems for each function.
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
Ensures accurate detection of actuator detachment, preventing the extraction of the prosthetic valve with the actuator and enhancing the reliability of the implantation process by providing real-time feedback on detachment status.
Implementation Method 1
the at least one mechanical wave sensor is a sound sensor
Implementation Method 2
the at least one mechanical wave sensor is a vibration sensor
Data Source
AI summary
The present invention relates to systems, assemblies and methods for detecting detachment of a prosthetic valve actuator. In an example, a prosthetic valve actuator detachment detection system comprises at least one actuator, a frame of the prosthetic valve movable by the at least one actuator between a radially compressed configuration and a radially expanded configuration, and at least one mechanical wave sensor.