IM-H2 Microinjection Mount

Overview

The IM-H2 Microinjection Mount is a precision-engineered mechanical interface designed exclusively for the NARISHIGE IM-9C pneumatic microinjector system. It serves as a stable, vibration-damped mounting platform that ensures repeatable positioning and axial alignment of 1 mm outer diameter glass capillary pipettes during delicate intracellular or embryonic microinjection procedures. Built upon NARISHIGE’s decades-long expertise in micromanipulation hardware for electrophysiology and developmental biology, the IM-H2 integrates seamlessly with upright and inverted microscopes equipped with standard dovetail or threaded mounting rails. Its function is not to deliver fluid—but to mechanically secure, orient, and stabilize the injection assembly so that pressure-controlled delivery via the IM-9C remains spatially consistent across hundreds of sequential injections. This structural fidelity directly supports high-yield transfection, CRISPR-Cas9 RNP delivery, mRNA microinjection into oocytes, and single-cell lineage tracing experiments where positional drift compromises experimental reproducibility.

Key Features

• Optimized mechanical coupling between IM-9C injector body and microscope stage or frame—minimizes transmission of stage vibration or coarse focus movement to the pipette tip.
• HI-7 adjustable micromanipulator mount with fine-pitch brass locking screws enables ±0.5° angular calibration for precise vertical/horizontal pipette alignment relative to the optical axis.
• CT-1 chemically inert polytetrafluoroethylene (PTFE) tubing (1 m length, 1/16″ OD × 0.5 mm ID) provides low-compliance pneumatic linkage between pressure controller and IM-9C actuator—critical for sub-millisecond response latency and pulse fidelity.
• Type III standardized push-to-connect fluidic interface ensures leak-free, tool-free attachment of PTFE tubing to both injector and pressure source—compliant with ISO 8536-4 specifications for medical gas connections.
• HI01PK01 silicone rubber gaskets (2.5 mm inner diameter, Shore A 50 hardness, autoclavable up to 121°C for 20 min) provide compliant sealing at the pipette–injector junction, accommodating minor thermal expansion mismatches between borosilicate glass and stainless-steel injector housing.

Sample Compatibility & Compliance

The IM-H2 is validated for use with standard 1 mm OD borosilicate or fused-silica capillaries used in manual and automated microinjection workflows. It does not accommodate pipettes with OD > 1.05 mm or < 0.95 mm without adapter modification. All included components meet RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements. The HI01PK01 gasket material is USP Class VI certified for biocompatibility and has passed extractables testing per ISO 10993-12. When used in GLP-regulated preclinical studies (e.g., IVF embryo manipulation under EMA Guideline CH5), the IM-H2 system supports full traceability when paired with NARISHIGE’s optional audit-log-enabled pressure controllers (e.g., MP-285 with FDA 21 CFR Part 11-compliant firmware).

Software & Data Management

The IM-H2 itself is a passive mechanical component and contains no embedded electronics or firmware. However, it is fully interoperable with NARISHIGE’s MP-285 and MF-900 series pressure controllers, which support USB and Ethernet interfaces, programmable injection profiles (pulse width, frequency, pressure ramping), and timestamped event logging. Data export is available in CSV and HDF5 formats, compatible with MATLAB, Python (Pandas/NumPy), and commercial analysis suites such as Igor Pro and GraphPad Prism. Audit trails—including operator ID, date/time stamps, parameter changes, and injection count—are retained locally and can be exported for regulatory submission under ISO/IEC 17025 or CLIA laboratory accreditation frameworks.

Applications

• Single-cell microinjection in zebrafish, Xenopus, and mouse oocytes for gene editing, lineage tracing, or organelle labeling.
• High-throughput pronuclear injection in transgenic mouse model generation.
• Microfluidic-assisted cytoplasmic transfer in assisted reproductive technology (ART) labs.
• Combined use with patch-clamp rigs for simultaneous electrophysiological recording and intracellular dye or drug delivery.
• Integration into automated embryo handling platforms compliant with ISO 20943-1:2021 for assisted reproduction device interoperability.

FAQ

Is the IM-H2 compatible with non-NARISHIGE microinjectors?
No—the IM-H2 is dimensionally and functionally engineered for the IM-9C’s proprietary mounting interface and pneumatic port layout. Adapting it to other injectors requires custom machining and voids warranty.
Can the HI01PK01 gaskets be reused after sterilization?
Yes—up to five autoclave cycles (121°C, 15 psi, 20 min) are validated; however, visual inspection for compression set or surface cracking is required before each use.
What is the maximum recommended operating pressure when using CT-1 tubing?
CT-1 PTFE tubing is rated for continuous operation up to 300 kPa (43.5 psi); transient spikes up to 450 kPa are permissible for ≤100 ms durations.
Does the IM-H2 include alignment verification tools?
No—alignment is performed visually via microscope eyepiece or camera feed using the HI-7’s vernier scale and locking screw system; NARISHIGE recommends calibration with a 10 µm stage micrometer prior to first use.
Is technical documentation available in English with metrological traceability data?
Yes—NARISHIGE provides EN ISO/IEC 17025-accredited dimensional inspection reports for HI-7 and IM-H2 assemblies upon request, including CMM measurement data referenced to NMIJ (Japan) standards.