Patient Table Caster Locking for Easier Reverse Transfer
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Solution Overview
Problem
Detachable patient tables used in medical imaging systems, such as MRI scanners, are cumbersome and challenging to maneuver due to their weight and lack of effective caster locking mechanisms, leading to inefficient patient transfer processes.
Innovation Solution
A patient transfer system with lockable casters controlled by sensors and actuators, adjusting locking based on operator input and movement detection, to facilitate smoother maneuverability and reduce operator effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If detachable tables are used for patient transfer, then workflow efficiency is improved by enabling patient preparation in dedicated rooms, but reversing maneuvers become challenging due to lack of caster control
Solution Approach 1:
Sensors detect operator actions and table motion to provide feedback to the control system, which then adjusts caster locking states in response to detected reversing maneuvers, enabling controlled backward movement
Solution Approach 2:
The system proactively locks or unlocks casters in anticipation of reversing maneuvers based on sensor-detected operator intent, preparing the table for reverse motion before the operator attempts it
2Device complexity
If traditional caster mechanisms are used, then device simplicity is maintained, but random caster rotations increase friction forces and reduce maneuverability
Solution Approach 1:
The patent replaces purely mechanical caster control with an integrated system combining sensors, electronic controllers, and actuated locking mechanisms, substituting manual mechanical adjustment with automated electronic control
Data Source
AI summary
Various methods and systems are provided for patient transfer using a patient table with lockable casters. In one example, a method includes adjusting locking of the lockable casters sequentially in response to an indication of reversing of the patient table. The sequential caster locking may be based on acceleration, velocity changes, or user interface forces. In another example, the system may include sensors to detect operator input and a controller to adjust caster locking accordingly.