Electronic Stethoscope Real-Time Audio Transmission
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Solution Overview
Problem
Current telemedicine systems face challenges in accurately and efficiently transmitting cardiac and lung sounds in real-time over secure digital networks, particularly due to the faintness of abnormal cardiac signals and the complexity of distinguishing them from normal heart sounds.
Innovation Solution
A telemedicine system comprising electronic stethoscopes with transducers that convert auscultation signals to digital signals and transmit them securely over a network, allowing for real-time audio reproduction at a remote location, utilizing processors, antennas, and secure digital networks to ensure faithful reproduction of body sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mechanical stethoscopes are used for auscultation, then the device is simple and portable, but the ability to transmit sounds over digital networks is lost
Solution Approach 1:
The patent replaces the purely mechanical acoustic transmission system with an electronic system that uses transducers to convert mechanical vibrations into electrical signals, which are then transmitted via wireless communication. This substitution enables network transmission capability while maintaining the fundamental auscultation function.
Solution Approach 2:
The electronic stethoscope integrates multiple functions into a single device: it serves as both a traditional auscultation tool and a wireless communication device. The headset component also functions as both an audio output device and a wireless receiver, enabling the system to operate in multiple modes (local auscultation, remote transmission, teaching) simultaneously.
2Loss of information
If electronic transducers are used to detect cardiac sounds, then the ability to transmit signals digitally is improved, but the faintness of abnormal cardiac signals becomes more difficult to detect
Solution Approach 1:
The system incorporates feedback mechanisms where the transmitted audio signals are monitored and adjusted to ensure faithful reproduction of the original cardiac sounds. The digital signal processing includes feedback loops that detect and compensate for signal degradation during transmission, maintaining the integrity of faint abnormal cardiac signals.
Solution Approach 2:
The patent employs digital signal processing techniques that change the parameters of the cardiac sound signals during transmission. This includes adjusting amplitude, frequency, and other signal characteristics to enhance the detectability of abnormal cardiac sounds while maintaining their characteristic features for accurate identification.
3Measurement precision
If real-time transmission of auscultation signals is implemented, then diagnostic accuracy is improved, but network security vulnerabilities increase
Solution Approach 1:
The patent introduces secure network protocols and encryption mechanisms as intermediary layers between the stethoscope and the receiving device. These security intermediaries ensure that real-time transmission of diagnostic information maintains both accuracy and security by protecting the data during transmission without compromising the timing critical for diagnostic purposes.
4Manufacturing precision
If digital signal processing is used to enhance cardiac sounds, then the reproduction fidelity is improved, but the processing delay increases
Solution Approach 1:
The system applies selective digital signal processing rather than comprehensive processing to all signals. Only the necessary processing steps are applied to maintain fidelity, while minimal processing is used for routine signals. This partial action approach reduces unnecessary processing delays while maintaining adequate reproduction quality for diagnostic purposes.
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
Enables real-time transmission and faithful reproduction of auscultation sounds over secure digital networks, improving diagnostic accuracy and accessibility by allowing clinicians to remotely hear patient sounds with minimal delay or distortion.
Implementation Method 1
a transducer that senses auscultation signals at a first location
Implementation Method 2
an antenna to wirelessly transmit the digital signals to a second location via a secure digital network
Implementation Method 3
a processor that converts the digital signals to audio corresponding to the auscultation signals and delivers the audio through earpieces on the headset
Data Source
AI summary
An electronic stethoscope includes a housing configured for hand-held manipulation, a transducer supported by the housing and configured to sense auscultation signals at a first location, and a headset coupled to the housing and configured to deliver audio corresponding to the auscultation signals through earpieces on the headset. The electronic stethoscope further includes a processor disposed in the housing and configured to convert the auscultation signals to first digital signals representative of the auscultation signals and to wirelessly transmit the first digital signals from the electronic stethoscope via a secure digital network to a second location such that the audio corresponding to the auscultation signals is provided to headsets of one or more additional electronic stethoscopes at the second location in substantial real time with the sensing of the auscultation sounds at the first location.