RWD 68605 Stereotactic Drill Holder

Overview

The RWD 68605 Stereotactic Drill Holder is an engineered mechanical interface designed for precise integration of the RWD handheld stereotactic drill (Model 78001) into standard stereotactic frames used in preclinical neuroscience research. It functions as a rigid, repeatable mounting solution that couples the drill unit to the vertical manipulator arm of stereotactic instruments—enabling controlled, depth-referenced cranial drilling under visual or coordinate-guided conditions. Unlike freehand drilling, this holder transfers vertical displacement from the stereotaxic manipulator directly to the drill bit, eliminating manual depth variability and minimizing mechanical stress on the skull and underlying neural tissue. Its design adheres to the biomechanical constraints of rodent neurosurgery, where submillimeter depth control and axial stability are critical to avoid dural penetration, cortical damage, or unintended ventricular entry. The holder operates on a passive mechanical coupling principle—no electronics, no power supply—and relies solely on precision-machined V-groove geometry and clamping force for alignment fidelity.

Key Features

• V-groove coupling interface compatible with RWD vertical support rods (e.g., Model 68207, Ø8 mm), ensuring coaxial alignment between drill axis and manipulator travel path
• Fixed-diameter clamping mechanism optimized for RWD handheld drill (Model 78001) with nominal outer diameter of 14.5 mm
• Tool-free, single-screw tightening system enabling rapid installation and removal without compromising repeatability
• High-rigidity aluminum alloy construction (anodized finish) for long-term dimensional stability and resistance to sterilization cycles (autoclave-compatible up to 121°C, 20 min)
• Zero-play mechanical interface—designed to eliminate lateral wobble or rotational drift during drilling under load
• Integrated depth-stop reference surface aligned parallel to the stereotaxic horizontal plane (Bregma–Lambda plane), facilitating calibration against skull landmarks

Sample Compatibility & Compliance

The 68605 holder is validated for use with adult Sprague-Dawley and C57BL/6 mice and rats (20–300 g). It is intended exclusively for ex vivo or in vivo stereotactic procedures performed under approved IACUC or equivalent animal ethics protocols. While not a medical device, its mechanical performance aligns with ISO 14971:2019 risk management principles for laboratory equipment used in regulated preclinical studies. The holder supports GLP-compliant workflows when paired with traceable stereotaxic frame systems (e.g., David Kopf Instruments models) and calibrated depth-readout manipulators. No FDA clearance or CE marking applies, as it falls outside the scope of IVDD or MDR regulations per its non-invasive, non-diagnostic, non-therapeutic classification.

Software & Data Management

As a purely mechanical component, the RWD 68605 requires no firmware, drivers, or software integration. However, it is fully interoperable with digital stereotaxic platforms—including those running NeuroStar™, Stereotaxic Suite Pro, or custom MATLAB/Python-based coordinate mapping tools—that output XYZ coordinates referenced to Bregma or Lambda. When used with motorized manipulators (e.g., Scientifica PatchStar or Narishige MO-10), the holder preserves positional fidelity across repeated deployments, enabling audit-trail-capable experimental replication. For laboratories maintaining 21 CFR Part 11 compliance, the holder’s static configuration can be documented in instrument logs alongside manipulator calibration certificates and surgical SOPs.

Applications

• Craniotomy site preparation prior to intracranial electrode implantation (e.g., silicon probes, tetrodes, optrodes)
• Drill-guide alignment for bilateral cannula or guide-screw placement in behavioral pharmacology studies
• Controlled-depth burr hole creation for viral vector delivery via Hamilton syringes mounted on compatible holders (e.g., RWD 68218)
• Calibration verification using RWD 68397 Cranial Leveling Calibrator to confirm Bregma–Lambda coplanarity before drilling initiation
• Training platform for stereotactic technique standardization across laboratory personnel, reducing inter-operator variance in drill depth accuracy

FAQ

Is the 68605 compatible with non-RWD stereotactic frames?
Yes—provided the frame accepts Ø8 mm vertical support rods and offers a standard 1/4″-20 or M6 threaded mounting port on its manipulator arm.
Can it accommodate drills other than Model 78001?
No. The 68605 is dimensionally specific to the 14.5 mm outer diameter and rear-mounting profile of the RWD 78001 handheld drill. Alternative drills require evaluation of mechanical fit, center-of-gravity offset, and torque transmission integrity.
Does the holder include depth measurement capability?
No. Depth is measured and controlled externally by the stereotaxic manipulator’s micrometer scale or digital encoder; the holder serves only as a rigid mechanical coupler.
What maintenance is required?
Routine inspection for thread wear, groove debris, and clamp screw torque retention (recommended torque: 0.8 N·m); cleaning with 70% ethanol or isopropyl alcohol between uses.
Is autoclaving supported?
Yes—full autoclave compatibility at 121°C, 15–20 psi, 20 minutes. Avoid prolonged exposure to alkaline detergents or ultrasonic cleaning with abrasive solutions.