Leg Pulling Device With Force Sensors For Safe Positioning
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Solution Overview
Problem
Current leg pulling devices used in hip endoprosthetic, arthroscopic, and traumatological interventions lack the ability to measure forces exerted on patients, leading to potential crushing, bruising, and other damages due to uncontrolled pulling forces during leg positioning and fixation.
Innovation Solution
A leg pulling device equipped with a traction device and a supporting device, incorporating force or pressure sensors to measure the forces exerted on the patient, with a microcontroller unit to evaluate these measurements and provide alarm signals when critical thresholds are exceeded, ensuring safe and precise leg positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pulling force is exerted on the patient's leg by the traction device, then the leg can be positioned and extended, but the supporting device may cause crushing, bruising, and other damage to the patient's soft parts
Solution Approach 1:
The patent implements force sensors that continuously measure the supporting force exerted on the patient and feed this information back to a control unit. The control unit compares the measured force against predetermined safety thresholds and automatically limits the pulling force when the threshold is exceeded, preventing damage to soft parts while maintaining leg positioning capability
Solution Approach 2:
The patent introduces force sensors as intermediary elements between the supporting device and the patient's body. These sensors act as mediators that detect the supporting force and transmit this information to the control system, enabling indirect monitoring and control of the interaction between the device and patient tissue
2Reliability
If force sensors and control systems are added to measure and limit pulling forces, then patient safety is improved, but device complexity increases
Solution Approach 1:
The control unit is programmed with predetermined safety thresholds and automatically limits the pulling force when sensors detect forces exceeding these thresholds. The system serves itself by autonomously monitoring and regulating the traction force without requiring constant manual intervention, thereby improving safety while keeping the control logic relatively simple
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
The device prevents damage to patients by providing real-time force measurement and feedback, allowing for precise and safe leg positioning and fixation, reducing the risk of injury and improving surgical efficiency.
Implementation Method 1
the supporting device and/or the traction device has/have at least one sensor, with which at least one force or at least one pressure can be measured
Data Source
AI summary
A leg pulling device has a traction device and a supporting device. At least one force or at least one pressure which is exerted on a patient by the supporting device upon the actuation of the traction device can be measured.