Boxun BXW-JDM Motorized-Door Pulsed Vacuum Steam Sterilizer

Overview

The Boxun BXW-JDM Motorized-Door Pulsed Vacuum Steam Sterilizer is a horizontally configured, Class B vacuum-assisted autoclave engineered for high-reliability sterilization of heat-stable medical devices, laboratory instruments, glassware, textiles, and liquid media in regulated environments. It operates on the validated principle of saturated steam under controlled pressure and temperature, combined with multiple pulsed vacuum cycles to ensure complete air removal—critical for achieving sterility assurance levels (SAL) of 10⁻⁶ per ISO 17665-1 and EN 285. The chamber is constructed from ASTM A240 S30408 stainless steel, while the jacket employs ASME Section VIII Division 1-compliant boiler-grade carbon steel, welded and non-destructively tested (NDT) per ASME BPVC Section V. Its pulsed vacuum architecture enables consistent penetration into lumened devices and porous loads, meeting the stringent requirements of healthcare sterilization departments, GLP-certified labs, and pharmaceutical QC facilities.

Key Features

• Motorized safety-interlocked door with pneumatically actuated sealing system, ensuring automatic compression of the EPDM gasket at rated pressure and eliminating manual torque dependency.
• Microprocessor-based control system with 7-inch color TFT touchscreen interface, displaying real-time dynamic profiles of chamber temperature, absolute pressure, vacuum level, pulse count, elapsed time, and current phase (conditioning, heating, sterilizing, exhaust, drying).
• Pre-programmed, user-editable cycles including wrapped/unwrapped instruments, porous loads, liquids (with slow-cool ramp), and BD test protocols compliant with EN 285 Annex C and ISO 11140-4.
• PID temperature regulation with adaptive tuning to suppress thermal overshoot during steam saturation, maintaining ±0.5 °C stability across the 105–138 °C operating range.
• Integrated electric steam generator (optional configuration) featuring auto-fill pump, low-water cutoff with audible/visual alarm, dual-level water level sensing, and pressure-controlled steam output regulated via 0.25 MPa safety relief valve and 0.22 MPa reseat mechanism.
• Vacuum integrity verified by built-in leak rate test (<0.13 kPa/min), with programmable pulse amplitude (±0.05–0.09 MPa) and cycle count (0–99) to accommodate load-specific evacuation profiles.

Sample Compatibility & Compliance

The BXW-JDM accommodates heterogeneous loads up to 240 L, including surgical kits, pipette tips, culture media bottles, filter housings, and textile packs. Its Class B classification (per EN 13060) confirms capability for sterilizing all load types defined in EN 285, including porous and hollow items requiring pre-vacuum conditioning. The system supports validation documentation packages aligned with ISO 13485, FDA 21 CFR Part 820, and EU MDR Annex I requirements. Critical safety functions—including door interlock logic (preventing cycle initiation if unsealed; preventing opening under pressure), overpressure protection, and fail-safe power-down sequencing—are designed to meet IEC 61010-1 and IEC 62304 software lifecycle standards. Optional audit trail logging complies with FDA 21 CFR Part 11 for electronic records and signatures.

Software & Data Management

The embedded controller logs timestamped process data (temperature, pressure, vacuum, phase transitions) to internal non-volatile memory with ≥10,000-cycle retention. RS485 Modbus RTU and optional Ethernet TCP/IP interfaces enable integration with laboratory information management systems (LIMS) or centralized sterilization monitoring platforms. Raw data export is supported via USB 2.0 port in CSV format, preserving metadata such as operator ID, cycle name, start/stop timestamps, and deviation flags. For GMP environments, optional firmware modules provide electronic signature capability, role-based access control (RBAC), and configurable alarm escalation protocols—fully traceable for regulatory inspection.

Applications

This sterilizer serves core functions in hospital central sterile supply departments (CSSD), academic research laboratories, biotech pilot plants, and contract manufacturing organizations (CMOs). Typical use cases include terminal sterilization of reusable surgical instruments prior to packaging, depyrogenation of glass vials and syringes, sterilization of microbiological growth media, and preparation of sterile filtration assemblies. Its robust vacuum performance makes it especially suitable for sterilizing endoscopes, catheters, and other complex geometry devices where residual air pockets compromise efficacy. In R&D settings, the programmable pulse parameters support method development for novel packaging materials or composite device assemblies.

FAQ

What vacuum level and pulse count are required to achieve full air removal in porous loads?
A minimum of three pulses with negative amplitude ≥−0.07 MPa and post-pulse residual pressure ≤−0.085 MPa is recommended for standard porous loads; validation per ISO 11138-2 should be performed for each load configuration.
Can the BXW-JDM operate without an integrated steam generator?
Yes—it supports external steam supply at 0.3–0.5 MPa, provided line quality meets EN 285 requirements for dryness fraction (>0.95) and non-condensable gas content (<3.5%).
Is the system compliant with FDA 21 CFR Part 11 for electronic records?
With optional audit trail and electronic signature firmware enabled, the system meets technical controls for authenticity, confidentiality, and integrity of electronic records and signatures.
What maintenance intervals are specified for the vacuum pump and door seal?
Vacuum pump oil replacement every 500 operational hours; door gasket inspection and functional testing before each shift; full gasket replacement recommended every 12 months or after 5,000 cycles, whichever occurs first.
How is temperature uniformity verified during IQ/OQ/PQ?
Validation requires thermocouple mapping using ≥12 calibrated sensors per 240 L chamber volume, per ISO 17665-2 Annex B, with acceptance criteria of ±1.0 °C across all measurement points during the sterilization hold phase.