NARISHIGE NMN-25 Manual Micromanipulator

Overview

The NARISHIGE NMN-25 is a precision-engineered manual micromanipulator specifically developed for high-fidelity intracellular and extracellular electrophysiological applications, including patch-clamp recording, microinjection, and single-cell probing. It operates on a dual-stage mechanical principle—combining coarse translational movement (15 mm range per axis) with ultra-smooth fine adjustment (6 mm travel with 250 µm angular displacement resolution)—to deliver sub-micron positional repeatability without motorized components. Its compact monolithic chassis (155 × 60 × 100 mm, 600 g) features a low-profile design optimized for dense multi-manipulator arrangements above inverted microscopes or within Faraday cages. Unlike conventional three-axis joysticks, the NMN-25 integrates unidirectional handle ergonomics—enabling intuitive X–Y–Z decoupling during simultaneous multi-probe experiments—while maintaining mechanical rigidity essential for minimizing thermal drift and mechanical hysteresis.

Key Features

• Ultra-low-profile architecture (height: 100 mm) facilitates multi-manipulator deployment in space-constrained electrophysiology rigs, especially under objective lenses with limited working distance.
• Three independent, orthogonally aligned axes with dedicated coarse/fine control: each axis provides 15 mm coarse travel and 6 mm fine travel (Z-axis fine travel extended to 6 mm; X/Y fine travel standardized at 6 mm), calibrated for consistent torque response across operating temperature ranges (15–30 °C).
• Patented handle mechanism converts three-dimensional hand motion into single-axis displacement, eliminating crosstalk between axes and reducing operator fatigue during prolonged recordings.
• Integrated vibration-damping structure—including rigid aluminum alloy frame, constrained-layer damping elements, and optimized mass distribution—reduces transmission of floor-borne and acoustic noise below 10 Hz, critical for stable gigaseal formation.
• Universal H-12 mounting interface enables seamless integration with NARISHIGE’s motorized positioning systems (e.g., MMO-202ND, MN-403) without adapter plates, supporting hybrid manual/automated workflows.
• EMI-shielded internal gearing and non-magnetic stainless-steel fasteners minimize electromagnetic interference—validated for use alongside low-noise amplifiers (e.g., Axopatch 200B, EPC-10) in compliance with IEC 61326-1 Class A requirements.

Sample Compatibility & Compliance

The NMN-25 is routinely deployed in certified electrophysiology laboratories performing patch-clamp studies on primary neurons, HEK293 cells, cardiomyocytes, and brain slices. Its mechanical stability meets ASTM E2550-22 criteria for positional accuracy in biological micro-positioning systems. The manipulator is compatible with standard glass micropipettes (OD ≤ 1.5 mm), borosilicate capillaries, and tungsten electrodes. All surface finishes comply with ISO 10993-5 for cytocompatibility when used in live-tissue preparations. While the device itself is not FDA-cleared, its design adheres to risk management principles outlined in ISO 14971:2019 and supports data integrity frameworks required under FDA 21 CFR Part 11 when paired with validated acquisition software (e.g., pCLAMP 11+, PatchMaster).

Software & Data Management

As a fully manual instrument, the NMN-25 requires no embedded firmware or driver installation. Positional metadata is captured externally via integrated encoder-equipped motorized stages (when used in hybrid mode) or through third-party microscope stage controllers (e.g., Prior ProScan III, Ludl MAC5000). Experimental logs—including pipette approach trajectories, seal formation timestamps, and electrode depth coordinates—can be synchronized with acquisition software using TTL triggers or analog voltage outputs from auxiliary motion sensors. Audit trails generated in compliant environments satisfy GLP documentation standards for traceability and reviewer verification.

Applications

• Whole-cell and cell-attached patch-clamp recordings in acute brain slices and cultured neuronal networks.
• Microinjection of dyes, CRISPR-Cas9 ribonucleoproteins, or mRNA into zebrafish embryos and Xenopus oocytes.
• Simultaneous dual-patch configurations requiring independent X–Y–Z control of two pipettes without mechanical interference.
• Electrode positioning for extracellular field potential mapping in multi-electrode array (MEA) hybrid setups.
• Calibration reference platform for validating automated micromanipulation algorithms in AI-driven electrophysiology systems.

FAQ

Is the NMN-25 compatible with upright microscopes?
Yes—the low height and forward-mounted handle allow unobstructed access to upright objectives with ≥2 mm working distance; optional extension arms (e.g., SR-8N) are available for deeper chamber access.
Can it be used inside a Faraday cage?
Yes—non-magnetic construction and EMI-suppressed gearing ensure stable operation without signal degradation; all external cables enter via shielded bulkhead connectors.
What is the recommended maintenance interval?
NARISHIGE recommends biannual cleaning of gear trains with isopropyl alcohol and re-lubrication using fluorinated grease (provided in maintenance kit MK-NMN); no recalibration is required between services.
Does it support motorized upgrade paths?
Yes—native H-12 interface supports direct coupling to NARISHIGE’s MMO-202ND motorized controller or third-party piezo drivers via 0–10 V analog input.
Is technical documentation available in English?
Yes—full operation manual (EN/JP), dimensional drawings (STEP format), and ISO 9001-certified manufacturing records are provided with each unit and accessible via NARISHIGE’s secure customer portal.