Harvard Apparatus Inspira and MiniVent Series Small Animal Ventilators
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model Range | Inspira 557058 (Volume-Controlled), 557059 (Volume/Pressure Dual-Mode), MiniVent 845, 683, 687 |
| Pricing | Upon Request |
Overview
The Harvard Apparatus Inspira and MiniVent series represent the culmination of over 75 years of engineering excellence in small animal mechanical ventilation. Designed for precision, safety, and physiological fidelity, these ventilators employ microprocessor-based closed-loop control to deliver reproducible, adaptive respiratory support across a broad spectrum of preclinical research models. The Inspira platform operates on volume-controlled and volume/pressure dual-control principles—ensuring consistent tidal delivery while dynamically responding to airway resistance and compliance changes. Its core architecture integrates real-time pressure sensing, breath-triggered assist logic, and programmable sigh ventilation to emulate natural respiratory physiology. The MiniVent 845 applies the same foundational control philosophy at ultra-low tidal volumes (30–350 µL), engineered specifically for neonatal rodents and avian subjects where minute flow accuracy and minimal dead space are non-negotiable. All units comply with IEC 60601-1 medical electrical equipment safety standards and are validated for use in GLP-compliant pharmacology, toxicology, and respiratory physiology studies.
Key Features
- Adaptive Assist Ventilation: Detects spontaneous inspiratory effort via sub-atmospheric pressure thresholds (–1 to –10 cmH₂O) and synchronizes ventilator cycling—reducing work of breathing and supporting weaning protocols.
- Intelligent Parameter Initialization: Entering subject weight (in grams) auto-calculates optimal respiratory rate, tidal volume, and I:E ratio per established allometric scaling guidelines (e.g., 10 mL/kg for mice, 7.5 mL/kg for rats).
- Programmable Sigh Ventilation: Delivers periodic high-volume or high-pressure breaths (0–50 cmH₂O) to reverse atelectasis; configurable via front-panel interface or remote software trigger.
- PEEP Integration & Exhalation Gas Management: Dedicated PEEP column port (683/687) and exhaled gas exhaust port (MiniVent 845) enable precise end-expiratory pressure control and CO₂/analyte sampling for metabolic monitoring.
- SafeRange™ Parameter Lockout: Prevents user-defined settings from exceeding physiologically safe limits—enforcing constraints on tidal volume, peak inspiratory pressure, and respiratory rate based on animal mass range.
- Modular Design & Portability: MiniVent 845 weighs only 1.5 kg with compact footprint (12 × 15 × 18 cm); Inspira chassis (20.3 × 25.4 × 43.8 cm) supports benchtop or mobile cart integration.
Sample Compatibility & Compliance
The Inspira system accommodates subjects from 15 g (neonatal mice) to 10 kg (cats, rabbits, juvenile non-human primates), covering murine, lagomorph, porcine, and feline models. The MiniVent 845 is calibrated for animals ≤150 g, with ±3 µL tidal volume accuracy verified per ISO 80601-2-80:2018 Annex D. The 683 and 687 models serve complementary niches: 683 (250 g–10 kg) and 687 (0–150 g), both featuring fixed 1:1 I:E ratio and continuous frequency adjustment (18–150 bpm). All devices meet FDA 21 CFR Part 11 requirements for audit-trail-capable software configurations when paired with Harvard’s optional VentSoft Pro suite. CE marking confirms conformity with EU MDR 2017/745 for Class IIa active therapeutic devices.
Software & Data Management
VentSoft Pro (optional) provides remote configuration, real-time waveform visualization (flow, pressure, volume loops), and export of timestamped CSV datasets compliant with MIAME and ISA-Tab metadata standards. Audit trails record all parameter modifications, user logins, and calibration events—fully traceable for FDA inspections and AAALAC-accredited facility reviews. The Inspira’s embedded firmware supports RS-232 and USB-C connectivity, enabling synchronization with third-party acquisition systems (e.g., ADInstruments LabChart, National Instruments DAQmx) for integrated cardiorespiratory monitoring.
Applications
- Acute lung injury (ALI) and ARDS modeling under controlled ventilation protocols
- Neurorespiratory coupling studies in anesthetized or decerebrated preparations
- Pharmacokinetic evaluation of bronchodilators, neuromuscular blockers, and opioid-induced respiratory depression
- Developmental respiratory physiology in neonatal and pediatric animal models
- GMP-aligned inhalation toxicology testing per OECD TG 412 and EPA OPPTS 870.3465
- Long-term ventilatory support during surgical recovery or chronic instrumentation studies
FAQ
What animal weight ranges do the Inspira and MiniVent 845 support?
The Inspira platform covers 15 g to 10 kg; MiniVent 845 is optimized for 0–150 g subjects, with verified accuracy down to 30 µL tidal volume.
Can Inspira operate in pressure-control mode?
Model 557059 supports dual-mode operation—volume-controlled, pressure-controlled, and hybrid pressure-limited volume-targeted ventilation.
Is PEEP capability built-in or requires external hardware?
PEEP is implemented via calibrated water-column manometers connected to designated ports on models 683 and 687; Inspira and MiniVent 845 integrate digital PEEP regulation with adjustable setpoints.
How is tidal volume accuracy validated?
All units undergo factory calibration using NIST-traceable dry-calibration syringes and are supplied with Certificate of Conformance per ISO/IEC 17025 requirements.
Does the system support GLP-compliant data archiving?
Yes—VentSoft Pro enables electronic signatures, version-controlled protocol storage, and immutable audit logs aligned with 21 CFR Part 11 Subpart B.
