Tracked Repositioning Sheet for Hospital Bed Patient Migration
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Solution Overview
Problem
Patients in hospital beds often migrate away from a comfortable 'home' position when the head section is elevated, leading to discomfort, loss of access to controls and services, and increased risk of pressure ulcers due to uneven weight distribution and friction during manual repositioning.
Innovation Solution
A patient positioning device with flexible tracks along the bed's edges and a motor-driven sheet system that allows patients or caregivers to easily return the patient to the 'home' position, reducing friction and pressure points by distributing weight evenly across the sleep surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual repositioning is used to return patient to home position, then patient can be repositioned, but friction and pressure points increase causing discomfort and pressure ulcers
Solution Approach 1:
The patent introduces a repositioning sheet as an intermediary device between the patient and the bed surface. This sheet is equipped with beaded edges that engage with flexible tracks, allowing the patient to be gently pulled back to the home position without direct manual handling. The sheet distributes the repositioning force evenly across the patient's body, minimizing friction and pressure points that would otherwise cause discomfort or pressure ulcers.
Solution Approach 2:
The patent replaces the mechanical action of manual repositioning (hands directly contacting and pulling the patient) with a tracked sheet system. The beaded edges of the sheet engage with flexible tracks that run along the bed, creating a controlled mechanical system that can gently pull the patient back without the high friction and localized pressure associated with manual handling.
2Ease of operation
If head section is elevated for patient comfort, then patient comfort improves, but patient migrates away from home position losing access to controls
Solution Approach 1:
The patent enables the patient to self-reposition by providing a simple interface (the sheet with beaded edges engaging the tracks) that allows the patient to pull themselves back to the home position when needed. This maintains comfort during elevated head positions while ensuring the patient can independently restore access to controls and services without requiring caregiver assistance.
3Reliability
If flexible tracks and sheet system are added for automated repositioning, then patient comfort and safety improve, but device complexity increases
Solution Approach 1:
The patent uses flexible tracks that can be integrated into the bed structure and a flexible sheet that spans between them. The flexibility of these components allows them to conform to the bed geometry and patient movement without requiring complex rigid mechanisms, thereby improving patient safety and comfort while minimizing the increase in device complexity.
Data Source
AI summary
A patient positioning device for restoring a patient to a desired position in a hospital bed. An example patient positioning device may include a flexible track positioned along each of the lateral edges of a sleep surface and extending substantially the entire length of the sleep surface, a sheet including beaded edges for slidably engaging the tracks such that the sheet spans between the first track and the second track on the sleep surface, and/or a drive mechanism located proximate a head end of the sleep surface and configured to pull the sheet towards the head end of the bed.