Medical Patient Couch Linear Control With Self-Locking Spindle
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Solution Overview
Problem
Existing linear motors used for patient positioning in medical facilities lack sufficient security against unintentional displacement, requiring large and complex brake shoes to maintain position, which are costly and inefficient.
Innovation Solution
A linear control facility with a spindle and drive facility that converts torque into axial force, utilizing a gear reduction mechanism to provide high self-locking and secure positioning, eliminating the need for large brake shoes by increasing braking force through multiple gear reductions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If linear motors are used for patient positioning, then positioning capability is achieved, but security against unintentional displacement is insufficient
Solution Approach 1:
The patent replaces the traditional mechanical linear motor system with a spindle and gear reduction mechanism. The gear reduction system provides self-locking capability that inherently prevents unintentional displacement without requiring additional brake shoes, thus improving reliability while reducing device complexity.
Solution Approach 2:
The gear reduction mechanism provides self-locking functionality where the system automatically prevents unintentional displacement through its mechanical design. The gear teeth engage to maintain position without requiring external braking forces or complex brake shoe assemblies.
2Reliability
If brake shoes are added to prevent displacement, then positioning security is improved, but device complexity and cost increase
Solution Approach 1:
The patent eliminates the need for separate brake shoe components by using a spindle and gear reduction mechanism that inherently provides locking capability. The gear teeth engagement replaces the function of brake shoes, simplifying the overall device structure while maintaining positioning security.
3Stability of the object's composition
If brake shoes are used to fix patient couch, then positioning stability is achieved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive brake shoe assemblies with a more economical spindle and gear reduction system. The gear mechanism provides inherent stability through its mechanical design, eliminating the need for costly brake shoe components while maintaining positioning stability.
4Reliability
If large brake shoes are used for high axial force, then positioning security is improved, but device complexity increases
Solution Approach 1:
The patent uses a spindle and gear reduction mechanism that provides high positioning security through mechanical advantage. The gear reduction ratio amplifies the holding force without requiring large brake shoes, thus improving reliability while reducing device complexity.
Solution Approach 2:
The patent changes the mechanical parameters by using a gear reduction mechanism with specific ratio to amplify the holding force. This allows high positioning security to be achieved with smaller, simpler components rather than large brake shoes.
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 facility ensures precise and secure patient positioning with enhanced security against unintentional displacement, reducing the need for costly brake shoes and improving positioning accuracy, especially in dynamic applications.
Implementation Method 1
a spindle (19) which can be rotated by the drive facility (18) and which couples the carriage (15) to the drive facility (18), wherein a position of the carriage (15) relative to the carrier component (9) along the adjusting axis (14) can be adjusted by rotating the spindle (19) via the drive facility (18)
Implementation Method 2
A linear control facility with a spindle and drive facility that converts torque into axial force
Data Source
AI summary
One or more example embodiments relates to a linear control facility for a medical facility, comprising a carrier component including a fastening interface configured to mechanically couple the linear control facility to the medical facility; a carriage moveable relative to the carrier component along an adjusting axis and configured to mechanically couple a patient couch; a movement-proof drive facility fixed to the carrier component; and a spindle rotatable by the drive facility, the spindle configured to couple the carriage to the drive facility, wherein a position of the carriage relative to the carrier component along the adjusting axis is adjustable by rotating the spindle via the drive facility.