Humaneway Rodent Restraint Devices

Q: How do I select the correct restrainer size?

Select by body weight. Mouse sizes: 28 mm (15–30 g), 32 mm (20–40 g), 35 mm (30–50 g). Rat sizes: 47 mm (100–160 g), 64 mm (160–450 g), 70 mm (400–520 g).

Q: Can the restrainers be autoclaved?

Yes. All six sizes are fully autoclavable using standard steam sterilisation cycles.

Key Benefits

Six purpose-fitted sizes — three mouse sizes (15–50 g) and three rat sizes (100–520 g) ensure a secure, appropriately sized fit for the animal
Bell-shaped entry — guides animals smoothly into the tube without injury, reducing procedural stress and loading time
Detachable tail slot — provides clean, unobstructed tail access for venipuncture and injection without repositioning the animal
Fully autoclavable — standard steam sterilisation compatible for repeated use in GLP and non-GLP research environments

Overview

The Humaneway Rodent Restraint Devices are cylindrical restrainers designed to safely immobilise mice and rats during tail vein injection, blood collection, and other procedures requiring tail access. Three mouse sizes (inner diameters 28, 32, and 35 mm for 15–50 g mice) and three rat sizes (inner diameters 47, 64, and 70 mm for 100–520 g rats) ensure a secure, appropriately fitted hold across the full range of commonly used laboratory rodent body weights.

The bell-shaped tube entry guides the animal smoothly into the restrainer without injury, and a one-way design minimises escape attempts. A detachable tail slot provides clean tail access for venipuncture, while an adjustable head stopper accommodates varying body lengths and holds the animal securely in position. A bottom-heavy stainless-steel base prevents tipping and a silicone grip enhances handling security during procedures.

All models are fully autoclavable for standard steam sterilisation, making them suitable for GLP environments. The restraint devices are designed to work as a system alongside Humaneway Tail Vein Simulators and Humaneway Laboratory Needles — allowing technicians to practise the complete procedural workflow on the simulator before handling live animals.

Key Features

Six sizes: 3 for mice (28, 32, 35 mm ID) and 3 for rats (47, 64, 70 mm ID)
Bell-shaped tube entry for smooth, injury-free animal loading
Detachable tail slot for unobstructed tail access
Adjustable head stopper accommodates varying body lengths
One-way entry/exit design minimises escape attempts
Bottom-heavy stainless-steel base for maximum bench stability
Silicone grip for secure handling during procedures
Fully autoclavable — suitable for GLP environments
Designed for use with Humaneway Tail Vein Simulators and Laboratory Needles

Typical Applications

Tail vein IV injection in mice and rats
Tail vein blood collection
Intravenous drug dosing in preclinical studies
Any procedure requiring tail access or temporary rodent immobilisation
Training use with Humaneway Tail Vein Simulators

Specifications

Mouse sizes (ID × length)	28 mm × 110 mm \| 32 mm × 110 mm \| 35 mm × 126 mm
Mouse weight range	15–30 g \| 20–40 g \| 30–50 g
Rat sizes (ID × length)	47 mm × 176 mm \| 64 mm × 215 mm \| 70 mm × 215 mm
Rat weight range	100–160 g \| 160–450 g \| 400–520 g
Base material	Stainless steel (bottom-heavy)
Sterilisation	Fully autoclavable (standard steam)

Frequently Asked Questions

How do I select the correct restrainer size for my animals?

Select by animal body weight. For mice: Size 28 (15–30 g), Size 32 (20–40 g), Size 35 (30–50 g). For rats: Size 47 (100–160 g), Size 64 (160–450 g), Size 70 (400–520 g). A snug but comfortable fit prevents the animal from turning around while avoiding excessive compression. Contact Walker Scientific for sizing guidance.

Can the restrainers be autoclaved?

Yes. All six Humaneway Rodent Restraint Device sizes are fully autoclavable using standard steam sterilisation cycles, making them suitable for repeated use in GLP and sterile environments.

How do the restraint devices work with the Humaneway Tail Vein Simulators?

The restraint devices and simulators are designed as a system. Technicians can practise loading the simulator into the restrainer and performing tail vein procedures before working with live animals, replicating the full procedural workflow including animal handling, restraint, and needle insertion.