INJ Bench Tail
Injector Restrainer
Designed to make tail vein injections in awake mice easy, fast, and controlled — no force, no stress.
// OVERVIEW
Effortless Injection for Awake Mice
The INJ Bench Tail Injector Restrainer is designed to make tail vein injections in awake mice easy, fast, and controlled. The mouse walks in independently through the built-in channel — no pushing or forcing is needed.
Once positioned, the restrainer locks securely, the tail is aligned over the backlight for clear vein visualization, and the injection angle can be fixed for a stable and repeatable injection experience.
Components are made from durable, autoclavable materials. The system is reusable after proper cleaning and sterilization following standard lab protocols.
// SPECIFICATIONS
// COMPARISON
INJ Bench Tail Injector vs. traditional mouse restraint.
How the INJ Bench Tail Injector Restrainer compares to standard tube restrainers and manual scruffing for awake-mouse tail vein injection.
| Criterion | INJ Bench | Tube restrainer | Manual scruffing |
|---|---|---|---|
| Animal entry | Self-entry tunnel — voluntary | Forced insertion | Forced scruffing |
| Stress level | Low — minimal handling | Moderate — restraint force | High — handler-induced |
| Vein visibility | Integrated LED backlight in tail groove | Ambient light only | Ambient light only |
| C57BL/6 (black mice) | Vein clearly visible with LED | Often invisible | Often invisible |
| Hands required | One hand free for injection | Two hands often needed | Both hands occupied |
| Reproducibility | High — fixed geometry per mouse | Variable — restraint angle differs | Operator-dependent |
| Compatible needles | 27G–30G | 27G–30G | 27G–30G |
| Sterilization | Autoclavable; IACUC compliant | Wipe-clean only | N/A |
| Reported success rate | 98% across 10,000+ procedures | Operator-dependent (literature varies) | Operator-dependent (literature varies) |
Success rate figure reflects internal procedure logs from labs using the INJ system. Comparison values for tube restrainers and manual scruffing reflect general preclinical literature; individual lab results vary by operator and protocol.
// HOW IT WORKS
Three Steps to a Perfect Injection
01
Tunnel-Guided Self-Entry for Stress-Free Positioning
The built-in tunnel allows the mouse to enter the restrainer independently, without handling pressure or force. This reduces stress, improves cooperation and creates a smoother workflow during tail-vein procedures. The result is faster setup, better animal welfare and a more consistent injection process.
02
Precision Angle Control for Clear Vein Access
The system allows smooth and controlled rotation of the mouse, ensuring optimal alignment for tail vein visualization without unnecessary handling. Once the ideal angle is reached, the position can be locked, providing stability during injection. This improves accuracy, reduces time and minimizes stress for both operator and animal.
03
Enhanced Backlit Vein Visibility
The integrated backlight illuminates the tail from below, making the vein clearly visible and easy to locate. This reduces guesswork and improves accuracy, even with less experienced operators. The result is faster injections, fewer attempts and a more consistent workflow.
Ready to Order?
Contact sales@injsystems.com — response within 24 hours.