Standing-up trainer

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Solution Overview

Problem

Convalescents with restricted mobility, such as stroke patients, face challenges in relearning movement sequences like standing up and sitting down due to insufficient muscle strength and coordination, leading to a high risk of falling and requiring extensive care and assistance, while existing stand-up trainers often fail to provide stable and independent training.

Innovation Solution

A stand-up trainer with an adjustable positioning unit driven by a motor, secured with belts or knee braces, and featuring a non-parallel support and seat strut configuration, allows for independent exercise with adjustable power support and secure positioning, reducing the need for constant assistance and enhancing stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a supervising assistant actively transfers the convalescent from sitting to standing position, then the convalescent receives necessary support and guidance, but the care intensity and cost increase significantly

Engineering Contradiction:

Improvesafety of convalescentVSAvoidcare efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The stand-up trainer enables convalescents to perform standing-up movements independently through self-service training. The device provides mechanical support via the positioning unit and drive mechanism, allowing users to relearn movement sequences without constant human assistance, thereby reducing care intensity while maintaining safety

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The stand-up trainer acts as an intermediary device between the convalescent and the standing-up action. It provides the necessary mechanical support and guidance through its positioning unit and drive mechanism, replacing the need for human assistants to physically transfer the user while ensuring safe and correct movement execution

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If a spindle drive is used to adjust the seat from horizontal to vertical position, then the seat positioning is achieved, but the device cannot cope with overweight patients and has shortened service life

Engineering Contradiction:

Improveseat adjustment capabilityVSAvoiddevice durability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the conventional spindle drive mechanism with a more robust drive system capable of handling higher loads. The new drive mechanism is designed to withstand the weight of overweight patients while maintaining reliable operation and extended service life, overcoming the limitations of traditional spindle drives

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If the positioning unit is not guided, then the adjustment mechanism is simpler, but the stability of the device is negatively affected

Engineering Contradiction:

Improveadjustment mechanism simplicityVSAvoiddevice stability

Core Design Contradiction:

Device complexityVSStability of the object's composition

Solution Approach 1:

A guiding mechanism is introduced as an intermediary component between the positioning unit and the seat. This guide ensures that the positioning unit moves along a predetermined stable path during adjustment, providing lateral support and preventing instability while maintaining a relatively simple overall structure

Inventive Principle:

Principle #24Intermediary (Mediator)

4Productivity

If the convalescent performs standing up movement independently, then care costs are reduced, but the muscle strength is often insufficient to carry out the movement

Engineering Contradiction:

Improvecare efficiencyVSAvoidmuscle strength of convalescent

Core Design Contradiction:

ProductivityVSForce

Solution Approach 1:

The drive mechanism provides a counteracting force that compensates for the insufficient muscle strength of the convalescent. By applying mechanical assistance through the positioning unit, the device enables users with limited strength to complete the standing-up movement independently, reducing reliance on human assistance

Inventive Principle:

Principle #8Anti-weight (Counterweight)

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

Enables convalescents to perform physiologically correct movement sequences independently, reducing care costs and improving safety by allowing multiple users to be supervised by a single assistant, while accommodating varying muscle strengths and mobility impairments.

Implementation Method 1

a stand-up trainer (1) for training a movement sequence for standing up and sitting down, in particular for convalescents, with a seat (9) which can be adjusted from a sitting position into a standing position by a drive (19)

Methodology Applied

Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

with two positioning units (2) which are guided on non-parallel support struts (3)

Methodology Applied

Scientific EffectMechanical Support: Mechanical Force

Data Source

PatentEP2830565B1Standing-up trainer

Publication Date: 2017.10.04 MEDICA MEDIZINTECHNIK GMBH

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AI summary

The invention relates to a standing-up trainer, in particular for use in rehabilitation for mobilising persons having limited mobility. In order to adjust a seat base (9) between a sitting position and a standing position, a positioning unit (2) that is adjustable by a drive (19) is provided, and at least one securing means (21) for securing the convalescent is provided.