CPR Device Position Sensor for Chest Pressure Accuracy
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Solution Overview
Problem
Existing mechanical cardiopulmonary resuscitation devices struggle to maintain the correct pressure point on the patient's chest during transport, leading to potential injuries due to deviations in the position of the massage device, which requires constant monitoring and adjustment by rescuers, diverting their attention from other life-saving measures.
Innovation Solution
A capacitive position sensor device with a sensor arrangement on the massage device's pressure surface and a position marking means on the patient's chest, using a metallic encoder element and evaluation device to detect and correct lateral displacements, automatically alerting rescuers and adjusting the device to maintain the correct position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical massage device is used to perform cardiopulmonary resuscitation, then the rescuer is relieved of the strenuous activity and can initiate other life-saving measures, but the position of the pressure surface may shift without immediate detection, leading to potential patient injuries
Solution Approach 1:
The patent implements a feedback mechanism by equipping the massage device with a position sensor that continuously monitors the location of the pressure surface relative to the target contact area on the patient's chest. When a positional deviation is detected, the system provides feedback to the rescuer through visual or audible signals, enabling timely correction without requiring constant manual monitoring
Solution Approach 2:
The patent replaces manual visual monitoring and physical adjustment with an automated sensor-based detection system. The position sensor electronically detects deviations from the target position and triggers alert mechanisms, substituting the need for continuous rescuer attention with an automated monitoring system
2Reliability
If the rescuer constantly monitors and adjusts the massage device position, then position accuracy is maintained, but the rescuer cannot focus on other life-saving measures
Solution Approach 1:
The system provides automated feedback through position sensors that continuously monitor the pressure surface location. When deviations occur, the system generates alerts that prompt rescuers to make minor adjustments, thereby maintaining position accuracy while minimizing the time rescuers need to dedicate to monitoring
Solution Approach 2:
The massage device performs self-monitoring of its position through integrated sensors, automatically detecting deviations and triggering alerts without requiring constant rescuer intervention. This enables the device to serve itself in terms of position monitoring, freeing the rescuer for other tasks
3Adaptability or versatility
If vibrations occur during transport, then the massage device may be shifted sideways or up or down, but the deviation may not be noticed until it causes injury
Solution Approach 1:
The position sensor provides continuous feedback on the pressure surface location relative to the target contact area. When vibrations during transport cause the device to shift, the sensor immediately detects the deviation and triggers an alert, enabling the rescuer to reposition the device before injury can occur
Solution Approach 2:
The system takes preliminary action by continuously monitoring position and being prepared to alert the rescuer before harmful deviations occur. The sensor system is constantly ready to detect shifts caused by vibrations or movement, enabling preventive correction rather than reactive response
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 reliable and immediate detection of deviations from the target pressure point, allowing rescuers to focus on other tasks while the device automatically adjusts or alerts them to reposition, minimizing the risk of injury and maintaining effective cardiopulmonary massage.
Implementation Method 1
the position sensor device has a capacitive sensor arrangement with a position sensor arranged on the pressure surface and with a position marking means cooperating therewith, the position sensor arranged on the pressure surface having at least one sensor electrode and the position marking means having at least one metallic encoder element, with the position sensor device having an evaluation device with means for determining changes in capacitance between the encoder element and the at least one sensor electrode
Data Source
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AI summary
The appliance according to the invention serves for cardiopulmonary massage and/or resuscitation of a patient and is provided with a massage appliance (17) which can be driven reversibly by a drive device (18) in an actuation direction (23) and which has a pressure surface (20) that can be positioned on the chest (12) of a patient (11) at a target contact area (21). In order to ensure that deviations of the pressure surface of the massage appliance from a target pressure point can be determined promptly and reliably, the invention proposes a position sensor device (22), for determining changes in the position of the massage appliance (17) and/or of the pressure surface (20) thereof relative to the target contact area (21) on the chest (12) of the patient in a plane normal to the actuation direction (23) of the massage appliance (17).