Bedside Commode Chair Transfer for Dignified Patient Toileting

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Solution Overview

Problem

Toileting patients in a bed-bound state is labor-intensive and undignifying for both medical staff and patients, often requiring multiple caregivers and involving manual lifting or use of hoists.

Innovation Solution

A patient support apparatus with a movable support frame and a support portion that allows patients to be transferred onto a seated position without lifting, featuring a hand rail, back rest, and a bed pan for waste collection, enabling toileting and transportation without the need for hoists.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual lifting or hoists are used to transfer patients to commodes or toilets, then patient toileting can be achieved, but the process becomes labor-intensive and undignifying for patients

Engineering Contradiction:
Improveease of patient transferVSAvoidlabor efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent introduces a commode chair with a support frame that acts as an intermediary device between the bed and the patient. The support frame with legs that extend under the bed allows the patient to be rolled onto the commode chair without manual lifting, eliminating the need for hoists and reducing caregiver labor while maintaining patient dignity

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The commode chair is designed to be positioned and adjusted by caregivers without requiring them to manually lift or support the patient's weight. The patient essentially transfers themselves by rolling onto the support portion, making the transfer process self-service oriented and reducing caregiver physical strain

Inventive Principle:
Principle #25Self-service

2Adaptability or versatility

If patients are transferred to separate structures like wheelchairs or commodes, then toileting and transportation can be facilitated, but the transfer process requires hoists and multiple caregivers

Engineering Contradiction:
Improveversatility of patient supportVSAvoidcomplexity of transfer equipment
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The commode chair is designed as a multi-functional device that can serve both as a toileting facility and a transportation means. The support frame with movable legs and adjustable support portion allows it to be used for both commode and wheelchair functions, eliminating the need for separate specialized equipment

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

Solution Approach 2:

The commode chair is divided into distinct functional components: a support frame with legs, a support portion for the patient, and a bed pan portion. This segmentation allows each component to be optimized for its specific function while keeping the overall device simple and manageable

Inventive Principle:
Principle #1Segmentation

3Productivity

If patients are kept in bed for toileting using bed pans, then patient mobility is maintained, but the process is undignifying and requires multiple caregivers

Engineering Contradiction:
Improvecaregiver efficiencyVSAvoidpatient dignity
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The commode chair with its support frame acts as an intermediary that elevates the patient above the bed surface, allowing toileting to occur in a more dignified seated position rather than lying in a bed pan. The bed pan portion can be moved underneath the patient when needed, but the patient remains elevated and visible to caregivers

Inventive Principle:
Principle #24Intermediary (Mediator)

4Ease of operation

If the support portion is positioned on the bed surface, then patient transfer is simplified, but the support frame must accommodate the bed structure

Engineering Contradiction:
Improveease of patient transferVSAvoidcomplexity of support frame
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The support frame incorporates movable legs that can dynamically adjust their position. The legs can extend under the bed when the commode chair is positioned at the bed, and can be retracted or repositioned when the commode chair is moved to other locations, allowing the device to adapt to different operational contexts without structural complexity

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3908242B1Patient support apparatus
Publication Date: 2026.03.11 PITT RACHEL
  • EP3908242B1 patent drawingFigure 1
  • EP3908242B1 patent drawingFigure 2A
  • EP3908242B1 patent drawingFigure 2B

AI summary

A patient support apparatus is disclosed.