Operating Table Safety System with Load Sensor Feedback

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Solution Overview

Problem

Operating tables face challenges in safely managing patient load and movement restrictions, leading to risks of tipping, overloading, and collisions, due to the complexity of configuring accessories and segments, which can result in injuries or equipment damage.

Innovation Solution

An operating table equipped with a load sensor arrangement that measures forces and torques, providing real-time feedback and warnings through a safety unit to prevent tipping and overload, and a system for identifying and managing secondary support surface sections to avoid collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the operating table is configured with multiple interchangeable segments and accessories to increase flexibility, then the adaptability is improved, but the device complexity increases and safety risks arise from improper configuration

Engineering Contradiction:
Improveflexibility in patient positioningVSAvoidcomplexity of configuring accessories
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patient support surface is divided into multiple interchangeable segments (head section, leg section, intermediate sections) that can be independently configured. Each segment can be detached and repositioned to create different positioning configurations, enabling adaptability while managing complexity through standardized modular components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The interchangeable segments are designed with universal interfaces that allow the same basic components to serve multiple functions in different positions and combinations. The control system provides universal monitoring and restriction management across all segment configurations, reducing the need for configuration-specific procedures.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If movement restrictions are imposed on the patient support surface to prevent tipping and overloading, then the safety is improved, but the ease of operation deteriorates due to limited adjustment freedom

Engineering Contradiction:
Improvesafety against tipping and overloadingVSAvoidease of adjusting the operating table
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The control system continuously monitors the actual configuration of interchangeable segments and patient load, comparing it against pre-stored stability data. Movement restrictions are dynamically adjusted based on real-time feedback about the current configuration, allowing maximum freedom of movement within safe limits while automatically preventing dangerous movements.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

Stability data and movement restrictions are pre-calculated and stored in the control system for various configurations of interchangeable segments. Before the user attempts to move the support surface, the system has already determined the appropriate restrictions based on the detected configuration, eliminating the need for manual safety calculations and enabling intuitive operation.

Inventive Principle:
Principle #10Preliminary action

3Object-affected harmful factors

If the control system monitors and enforces movement restrictions based on patient weight and configuration, then the harmful factors are reduced, but the device complexity increases

Engineering Contradiction:
Improverisk of patient injury from table tippingVSAvoidcomplexity of safety monitoring system
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The control system automatically detects the configuration of interchangeable segments through sensors and RFID tags, retrieves the appropriate stability data, and configures movement restrictions without user intervention. The system self-monitors patient load via integrated scales and automatically adjusts restrictions, eliminating the need for manual safety checks and reducing operational complexity despite enhanced monitoring capabilities.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Physical mechanical limits and manual safety checks are replaced with an electronic control system that uses sensors, RFID communication, and software algorithms to monitor configuration and enforce movement restrictions. This substitution allows for more sophisticated safety monitoring while providing a user experience similar to simple mechanical systems through automated decision-making.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 solution ensures safe patient handling by preventing tipping and overloading, reducing the risk of injuries and equipment damage, while simplifying the configuration process by providing real-time feedback and automatic movement restrictions.

Implementation Method 1

a load sensor arrangement which measures forces and torques

Methodology Applied
Scientific EffectForce sensing: Force

Data Source

PatentUS20250017802A1Safety system for use in medical tables
Publication Date: 2025.01.16 MAQUET GMBH
  • US20250017802A1 patent drawing
  • US20250017802A1 patent drawing
  • US20250017802A1 patent drawing

AI summary

A system for determining and displaying restrictions on the operation of an operating table, comprising a patient support surface (600) for fastening on an operating table column of an operating table, a display unit (607) for displaying information about restrictions on the operation of the operating table, and an evaluation unit (606) which determines restrictions on the operation of the operating table based on at least the identification and/or configuration of the patient support surface (600) and displays the restrictions on the display unit (607) before the patient is placed on the patient support surface (600).