SIGAS humidification and suction device for medical use (positive/negative pressure)
| Brand | SIGAS |
|---|---|
| Origin | Germany |
| Product Type | Medical humidification and suction system |
| Model | SIGAS Humidification & Suction Device |
| Compliance | CE-marked per MDR 2017/745 |
| Vacuum Range | 0–80 kPa (0–0.8 bar) |
| Operating Pressure | 400–600 kPa compressed air supply |
| Humidification Principle | Bubble-through immersion tube with multi-orifice diffusion |
Overview
The SIGAS Humidification & Suction Device is a dual-function, CE-marked medical gas management system engineered for clinical environments requiring precise, reliable control of both respiratory humidification and aspiration therapy. It integrates two physically independent but co-located subsystems: a jet-assisted positive-pressure suction unit and a regulated negative-pressure vacuum aspiration module — both compliant with EN ISO 8573-1 (compressed air quality) and EN 60601-1 (medical electrical equipment safety). The humidification section operates on the bubble-through principle: medical-grade oxygen or air passes through a submerged immersion tube equipped with multiple precision orifices, ensuring consistent gas–water interface contact time and predictable relative humidity output (typically 95–98% RH at 37 °C). Unlike passive heat-and-moisture exchangers (HMEs), this active humidification method delivers stable moisture content independent of flow rate fluctuations up to 15 L/min, making it suitable for high-flow nasal cannula (HFNC) support and invasive ventilation circuits.
Key Features
- Two independent suction modes: jet-driven positive-pressure aspiration (using hospital-grade compressed air) and centrally supplied negative-pressure aspiration — selectable via dedicated front-panel controls
- Vacuum regulation with analog dial control (0–80 kPa range) and mechanical lock-in setting; maintains setpoint stability ±1.5 kPa under dynamic load conditions
- Integrated quick-disconnect valve enables instantaneous suction interruption without resetting vacuum parameters — critical during patient repositioning or airway assessment
- Humidification chamber constructed from autoclavable polycarbonate with integrated water level indicator and anti-splash baffle design
- Immersion tube with 12 calibrated orifices (Ø0.8 mm) ensures uniform bubble dispersion and minimizes channeling or localized dry spots
- Acoustic damping housing reduces operational noise to ≤45 dB(A) at 1 m distance — compliant with WHO guidelines for ICU ambient noise levels
Sample Compatibility & Compliance
The device is validated for use with standard ISO 5356-1-compliant breathing circuits, ISO 8536-4 IV tubing connectors, and DIN 13250 suction catheters. It supports integration into hospital central gas pipeline systems conforming to ISO 7396-1 (medical gas pipeline systems) and meets essential requirements under Regulation (EU) 2017/745 (MDR) for Class IIa medical devices. All wetted components are USP Class VI-certified and compatible with sterile water for injection (WFI) and bacteriostatic saline. The system undergoes routine verification per ISO 17025-accredited protocols for vacuum accuracy, flow consistency, and humidification output stability across temperature gradients (20–30 °C ambient).
Software & Data Management
This is a standalone, non-connected electromechanical device with no embedded firmware or digital interface. All operational parameters are manually adjusted and visually confirmed via analog gauges and tactile controls — eliminating cybersecurity risks and ensuring uninterrupted functionality during network outages or electromagnetic interference (EMI) events. Maintenance logs and calibration records are documented externally in accordance with ISO 13485:2016 QMS requirements. Optional traceable calibration certificates (NIST-traceable pressure transducers) are available upon request for GMP or GLP audit readiness.
Applications
- Continuous or intermittent tracheobronchial secretion removal in mechanically ventilated patients (ICU, step-down units)
- Postoperative wound drainage using four-lumen closed suction systems (e.g., Blake, Jackson-Pratt configurations)
- High-flow humidified oxygen therapy (HFOT) delivery at flow rates up to 60 L/min when paired with appropriate flow generators
- Aerosolized medication delivery support via T-piece nebulization circuits requiring stable carrier gas humidity
- Emergency airway clearance during bronchoscopy or laryngoscopy procedures
FAQ
Is the device compatible with hospital central vacuum and compressed air systems?
Yes — it interfaces directly with ISO 8536-1-compliant wall outlets for both vacuum (-80 kPa max) and compressed air (400–600 kPa). No external regulators or adapters are required.
Can the humidification chamber be sterilized between uses?
The polycarbonate chamber and immersion tube are autoclavable at 121 °C for 20 minutes (3 cycles maximum); repeated sterilization does not compromise dimensional stability or orifice integrity.
Does the system require electrical power?
No — operation is fully pneumatic. Only the optional digital pressure display (sold separately) requires a 9 V battery.
What maintenance intervals are recommended?
Daily visual inspection of water level and tubing integrity; weekly disinfection of external surfaces with 70% IPA; biannual verification of vacuum gauge linearity using certified deadweight tester.
