Patient Repositioning System Single Drive Rotation
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Solution Overview
Problem
Existing patient repositioning systems cannot perform multiple operations, such as lateral transfer and rotation, with a single drive while providing positive support at any angle of rotation or elevation, and are often bulky, expensive, or complicated.
Innovation Solution
A patient repositioning system that uses a single drive to move and fix a patient body or limb in any sequence of multiple operations with positive support at any angle of rotation or elevation, employing a drive system, clamps, guides, and pulling systems to ensure continuous support during rotations and transfers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If existing patient repositioning systems use a single drive, then the device complexity is reduced, but the system can only perform a single function (lateral transfer or rotation) and requires multiple separate systems for multiple operations
Solution Approach 1:
The patent implements a single drive system that can perform multiple patient repositioning operations including lateral transfer, rotation, and limb lifting by changing the configuration of the pulling system and guide mechanism. The drive system remains the same while the functional capabilities are expanded through reconfigurable components.
Solution Approach 2:
The patent employs dynamic reconfiguration of the pulling system and guide mechanism to enable the single drive to perform different operations. The system can switch between lateral transfer mode, rotation mode, and limb lifting mode by adjusting the mechanical configuration, allowing one drive to serve multiple functions.
2Device complexity
If existing systems provide body support only at angles less than 90°, then the device complexity is reduced, but the patient body must be additionally supported from free fall in rotation over 90 degrees
Solution Approach 1:
The patent ensures continuous patient body support throughout the entire rotation range from 0° to 180° by maintaining engagement of the pulling system with the patient support at all angles. The guide mechanism and pulling system work together to provide uninterrupted support, eliminating the need for additional free-fall support mechanisms.
Solution Approach 2:
The patent introduces an intermediary pulling system that acts as a mediator between the drive and the patient support. This pulling system with guide mechanism provides continuous support during rotation by transferring the driving force through multiple angles, ensuring the patient body is supported from 0° to 180° without gaps.
3Device complexity
If existing devices combine rotation and limb lifting in a single operation, then the device complexity is reduced, but only the first movement is controllable and the second movement is tied to the first movement
Solution Approach 1:
The patent segments the control of movement operations by allowing independent control of rotation and limb lifting movements. The single drive can perform rotation operations independently, and limb lifting can be controlled separately through the reconfigurable pulling system, enabling sequential and independent control of multiple movements rather than tied operations.
4Adaptability or versatility
If complete 180° rotation mechanisms are developed, then the patient can be rotated fully, but the mechanisms are bulky and expensive
Solution Approach 1:
The patent achieves full 180° rotation capability through a compact design where the single drive system can be reconfigured to perform both lateral transfer and rotation operations. The guide mechanism and pulling system are designed to enable rotation up to 180° without requiring separate bulky mechanisms for each function, reducing overall system size and cost.
Data Source
AI summary
A patient repositioning system to move and fix a patient body and/or a limb of a patient body in any sequence of multiple operations with positive body or limb support at any angle of rotation or repositioning.