Primate Restrainer With Rotatable Protective Cylinders

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Solution Overview

Problem

Existing primate restraint devices cause skin irritation and damage due to friction with vertical bars, particularly at the armpits and groins, and can harm the tail or limbs during locking, and are not adaptable for different monkey sizes.

Innovation Solution

The restraint device features rotatable protective cylinders on vertical bars to reduce friction, serrated lock grooves to minimize limb damage, a lock mechanism on the rear door to prevent tail and limb injuries, and adjustable side shutters to accommodate various monkey sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the limbs of the monkey are pulled out frontward through the lattice of the partition wall and tied to restrict movement, then the restraint effectiveness is improved, but the skin at the roots of the limbs (armpits and groins) is strongly contacted with vertical bars causing friction, irritation, erosion, or abrasion

Engineering Contradiction:
Improverestraint effectivenessVSAvoidskin irritation and damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces protective cylinders as intermediary elements between the monkey's skin and the vertical bars of the partition wall lattice. These cylinders wrap around the vertical bars to create a protective interface that reduces direct contact and friction, thereby preventing skin irritation, erosion, and abrasion while maintaining the restraint function through the lattice structure

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The protective cylinders are installed beforehand on the vertical bars to cushion and protect the monkey's skin from harmful friction and contact. This preventive measure is implemented before the restraint process occurs, ensuring that when the monkey's limbs are pulled through the lattice and tied, the skin at sensitive areas like armpits and groins is already protected from damage

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If a lock mechanism is used to close and lock the shutter on the rear surface side after transferring the monkey, then the security of restraint is improved, but the tail or limbs of the monkey may be damaged by the lock mechanism

Engineering Contradiction:
Improvesecurity of restraintVSAvoidtail and limb injuries
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a protective plate as an intermediary element positioned between the lock mechanism and the monkey's body parts (tail and limbs). This plate acts as a barrier that prevents direct contact between the locking components and the monkey's vulnerable areas, thereby eliminating the risk of injury while maintaining the security function of the lock mechanism

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If the restraint device uses fixed vertical bar spacing in the lattice structure, then the manufacturing simplicity is improved, but the device cannot accommodate monkeys of different body sizes (male and female)

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidadaptability to different monkey sizes
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent transforms the static, fixed vertical bar spacing into a dynamic, adjustable configuration. The vertical bars are made movable along the lattice structure, allowing the spacing between them to be adjusted according to the size of the monkey being restrained. This enables the same device to accommodate both smaller female monkeys and larger male monkeys while maintaining manufacturing simplicity through the use of standardized lattice components

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent designs the lattice structure with universal adaptability, where the vertical bars can be repositioned to serve different functions for different monkey sizes. The same lattice framework can universally accommodate various body sizes by adjusting the vertical bar positions, making a single device suitable for both male and female monkeys without requiring multiple specialized devices

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

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

The solution effectively reduces skin irritation and damage, allows safe use for both male and female monkeys of different sizes, and prevents injuries during locking and movement restriction.

Implementation Method 1

rotatable protective cylinders on vertical bars to reduce friction

Methodology Applied
Scientific EffectFriction reduction through rotation: Friction

Data Source

PatentEP2853157B1Restrainer for primates
Publication Date: 2022.02.16 SHIN NIPPON BIOMEDICAL LAB
  • EP2853157B1 patent drawingFigure 1~2
  • EP2853157B1 patent drawingFigure 3~4
  • EP2853157B1 patent drawingFigure 5~6(B)

AI summary

The present invention reduces or eliminates injuries such as those to the base of the limbs of a primate in a restrainer caused by friction with vertical bars in the grid of a barrier that is movable in a front-back direction, by reducing the friction when using the barrier to restrain the primate. A restrainer (10) for primates has: a storage body (20) having two side surfaces, a top surface, and a bottom surface; a rear surface door (50) which can open and close the rear surface side of the storage body (20); and a barrier (30) that is formed so as to be movable inside the storage body (20) in a front-back direction, and that is formed so as to be fixable at a desired position inside the storage body (20). Protective tubing (33) is rotatably inserted onto vertical bar members (31) of the barrier (30) at locations on the vertical bar members (31) where the base parts of the limbs of a primate would make contact when the limbs of the primate are extended in the frontal direction and restrained.