Capnocheck Capnometer – Miniaturized Mainstream End-Tidal CO₂ Monitor
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Import Status | Imported |
| Model | Capnocheck Capnometer |
| Pricing | Available Upon Request |
Overview
The Capnocheck Capnometer is a compact, handheld mainstream end-tidal CO₂ (ETCO₂) monitor engineered for real-time, non-invasive measurement of carbon dioxide concentration in exhaled breath. It employs miniaturized mainstream infrared (IR) absorption spectroscopy—specifically nondispersive infrared (NDIR) detection—at a wavelength of 4.26 µm, where CO₂ exhibits maximal absorbance. Unlike sidestream analyzers that aspirate gas through tubing to a remote sensor, the Capnocheck integrates the optical cell directly into the airway adapter, minimizing dead space (<1.5 mL), eliminating sampling delay, and preserving waveform fidelity. This architecture ensures high temporal resolution and accurate representation of capnographic waveforms (Phase I–III), critical for assessing ventilation-perfusion matching, confirming endotracheal tube placement, monitoring cardiopulmonary resuscitation (CPR) efficacy, and detecting early metabolic or circulatory compromise in animal models.
Key Features
- Miniaturized mainstream NDIR sensor with integrated airway adapter—designed for low-dead-space (<1.5 mL) and rapid response time (<150 ms)
- Portable form factor (120 × 65 × 30 mm; <180 g) powered by two AAA alkaline batteries (up to 12 hours continuous operation)
- Zero-calibration requirement prior to each use—factory-calibrated with traceable NIST-standard CO₂ gas mixtures
- Digital display showing real-time ETCO₂ value (mmHg or kPa), respiratory rate (bpm), and qualitative capnogram waveform
- Compatible with standard 15 mm male/female airway connectors per ISO 5356-1; supports both intubated and spontaneous breathing configurations
- Rugged housing rated IP22 for resistance to dust ingress and vertically dripping water—suitable for laboratory, surgical suite, and transport environments
Sample Compatibility & Compliance
The Capnocheck Capnometer is validated for use across a broad range of preclinical species—including rodents, rabbits, dogs, pigs, and nonhuman primates—when interfaced with appropriately sized endotracheal tubes or nasal/mask interfaces. It meets essential performance criteria outlined in ISO 80601-2-55:2018 (Medical electrical equipment — Part 2-55: Particular requirements for basic safety and essential performance of respiratory gas monitors) and complies with electromagnetic compatibility (EMC) per IEC 60601-1-2:2014. While not intended for human clinical diagnosis, its measurement accuracy (±0.5 mmHg within 5–60 mmHg range) and repeatability (CV 4 hours), integration with the optional Data Certification Kit enables timestamped, audit-trail-enabled data export compliant with FDA 21 CFR Part 11 requirements.
Software & Data Management
The Capnocheck operates as a standalone device without embedded software or onboard storage. However, when paired with the optional Data Certification Kit (DCK), it interfaces via RS-232 serial output to host acquisition systems running validated third-party software (e.g., LabChart, AcqKnowledge, or custom MATLAB/Python-based analysis platforms). The DCK provides hardware-level encryption, electronic signature capability, and immutable log generation—including operator ID, session start/end timestamps, calibration history, and raw waveform metadata. All exported data files conform to ASTM E1461-22 standards for digital data interchange in life science instrumentation, supporting traceability in regulatory submissions.
Applications
- Verification of tracheal intubation and continuous confirmation of airway patency during anesthesia
- Quantitative assessment of ventilation efficiency in rodent models of acute lung injury (ALI) or COPD
- Monitoring of CO₂ rebreathing dynamics during closed-circuit anesthetic delivery systems
- Respiratory depression screening in opioid pharmacology studies
- Capnography-guided optimization of ventilator settings in large-animal ICU simulations
- Integration into multimodal physiological monitoring rigs alongside ECG, SpO₂, and temperature modules
FAQ
Is the Capnocheck Capnometer suitable for neonatal or pediatric animal models?
Yes—its low-dead-space adapter design and high-sensitivity NDIR optics enable reliable ETCO₂ measurement in animals with tidal volumes as low as 5 mL, including neonatal rats and juvenile swine.
Does the device require periodic recalibration by the user?
No—each unit undergoes factory calibration using NIST-traceable CO₂ standards and maintains stability for ≥12 months under normal laboratory conditions; recalibration is only required after physical damage or exposure to condensate.
Can the Capnocheck interface with common data acquisition systems used in academic labs?
Yes—via RS-232 output and the optional Data Certification Kit, it supports integration with ADInstruments LabChart, BIOPAC AcqKnowledge, and custom Python-based acquisition frameworks using PySerial or similar libraries.
What maintenance is required for long-term reliability?
Routine cleaning of the optical window with lint-free wipes and isopropyl alcohol; avoidance of prolonged exposure to volatile anesthetic agents (e.g., desflurane) above 15% v/v to prevent sensor drift.
