NARISHIGE SYR Series Hydraulic Microsyringe

Overview

The NARISHIGE SYR Series Hydraulic Microsyringe is a precision-engineered positive-displacement fluid delivery component designed for high-fidelity intracellular, subcellular, and extracellular microinjection applications in life science research. Unlike motorized or stepper-driven syringes, the SYR series operates via externally regulated hydraulic or pneumatic pressure—typically supplied by compatible NARISHIGE controllers such as the IM-9B—enabling ultra-low flow rates, nanoliter-to-microliter volume control, and exceptional temporal resolution. Its core function is to translate stable, calibrated pressure input into reproducible, pulse-free fluid displacement with minimal hysteresis or mechanical lag. The SYR platform serves as a critical interface between microinjection hardware and biological samples—including oocytes, embryos, neurons, and cultured mammalian cells—where volumetric accuracy, sterility maintenance, and mechanical stability directly impact experimental validity and cell viability.

Key Features

• Precision-machined stainless steel or optically clear borosilicate glass barrel construction, both featuring electropolished or super-polished internal surfaces to minimize shear-induced protein denaturation and adsorption.
• Viton or fluoroelastomer O-ring piston seals engineered for low-friction, high-reproducibility linear motion across >10,000 injection cycles without measurable drift or leakage under nominal operating pressures (0.1–1.0 MPa).
• Two standardized tip configurations: Luer Lock for secure, leak-tight coupling with capillary needles or tubing; and resin-tipped variants offering enhanced sealing against tapered glass or polymer microcapillaries.
• Calibrated volumetric capacity options—including SYR-11 (1060 µL) and SYR-15 (800 µL)—designed to match common microinjection protocols requiring defined bolus volumes or continuous slow infusion.
• Direct mechanical compatibility with NARISHIGE’s IM-9A, IM-9B, and IM-6 hydraulic microinjector systems, enabling synchronized axial positioning and pressure-controlled delivery within stereotactic or micromanipulator-based workflows.
• Zero dead-volume design at the barrel–piston interface, minimizing residual sample carryover and facilitating rapid reagent switching in multi-step transfection or co-injection experiments.

Sample Compatibility & Compliance

The SYR Series is validated for use with aqueous buffers, saline solutions, nucleic acid suspensions (plasmid DNA, siRNA, CRISPR RNP complexes), fluorescent dyes, and viscous cytoplasmic analogs (e.g., 5–10% dextran solutions). Glass variants permit real-time visual inspection of bubble formation, meniscus position, and O-ring integrity—critical for GLP-compliant pre-injection QC checks. Stainless steel models meet ISO 13485 material biocompatibility requirements for reusable laboratory components and are autoclavable (121°C, 20 min) without dimensional or functional degradation. All SYR syringes conform to ISO 8536-4 for medical-grade glass containers and ASTM F2723 for elastomeric seal performance under cyclic compression.

Software & Data Management

While the SYR syringe itself is a passive mechanical component, its integration with NARISHIGE’s IM-9B controller enables traceable, audit-ready operation when used in regulated environments. The IM-9B supports optional 21 CFR Part 11-compliant firmware (with electronic signatures, user access logs, and immutable event timestamps), allowing full documentation of pressure setpoints, dwell times, and injection sequence metadata. When paired with third-party acquisition software (e.g., MetaMorph, NIS-Elements), synchronized TTL triggers from the IM-9B can log injection events alongside time-lapse imaging data—ensuring temporal alignment essential for kinetic studies of gene expression or calcium signaling post-injection.

Applications

• Intracytoplasmic sperm injection (ICSI) and pronuclear transfer in assisted reproductive technology (ART) laboratories.
• CRISPR-Cas9 ribonucleoprotein (RNP) delivery into zygotes or stem cells with minimized off-target effects and improved editing efficiency.
• Single-cell mRNA or protein co-injection for lineage tracing or functional rescue assays in developmental biology.
• Microfluidic interfacing—used as a calibrated pressure source for loading gels, priming microchannels, or actuating soft lithographic valves.
• Neuroscience applications including targeted dye filling of dendritic spines or localized neurotrophin delivery in acute brain slices.

FAQ

Can the SYR syringe be sterilized between uses?

Yes—glass variants are compatible with dry heat (180°C, 2 h) and ethylene oxide; stainless steel models support steam autoclaving (121°C, 20 min) and hydrogen peroxide plasma sterilization.
What is the recommended maximum operating pressure for SYR-15?

The rated burst pressure is ≥3.5 MPa; however, optimal precision and longevity are achieved at ≤1.0 MPa when used with IM-9B or equivalent controllers.
Is calibration certificate provided with each SYR syringe?

NARISHIGE supplies factory calibration documentation per batch (traceable to JCSS standards); individual unit certificates are available upon request for GMP/GLP environments.
How does thermal expansion affect volume accuracy during long-duration injections?

Borosilicate glass barrels exhibit <0.1% volumetric drift over 20–37°C ambient range; stainless steel variants show negligible thermal coefficient of expansion (<10⁻⁶/K) under typical lab conditions.
Can SYR syringes be used with non-NARISHIGE pressure controllers?

Yes—any controller delivering stable, pulse-free hydraulic/pneumatic output with 1/4″-28 UNF or M6×0.75 threaded interface may be adapted using standard NARISHIGE mounting brackets (e.g., SYR-MB).