Features of CO2 adsorbent for medical device
Medical CO₂ Adsorbents are primarily used in devices such as anesthesia machines and ventilators. Their core function is to efficiently absorb carbon dioxide exhaled by patients while ensuring safety and operational convenience.
The product features include:
1. Chemical Composition and Safety
- Primary component: Typically based on calcium hydroxide (Ca(OH)₂). Free of strong alkaline components like sodium hydroxide (NaOH) or potassium hydroxide (KOH), preventing degradation of volatile anesthetics through chemical reactions.
- Low irritancy: High particle hardness and low dust generation rate (~1.8%). Dust particles are less likely to disperse in humid environments, minimizing irritation to respiratory mucosa.
2. Physical Structure and Adsorption Performance
- Porous and loose structure: Particles come in diverse forms (e.g., cylindrical, spherical) with a cross-sectional diameter of ~3 mm and length of 4–7 mm. This design provides a large surface area and excellent air permeability, enhancing adsorption efficiency.
- High adsorption capacity: Effective in absorbing CO₂ during low-flow anesthesia, achieving an adsorption efficiency of up to 68.3% while releasing approximately 700 KJ/kg of heat.
- Rapid kinetics: Fast adsorption process, suitable for continuous operational demands of medical devices.
3. Operational Convenience
- Sensitive color-changing indicator: Visual color transition (e.g., pink to white or white to purple) allows quick identification of adsorbent exhaustion.
- Dust-free design: Uniform particles with minimal dust generation during transport and use. Some devices recommend adding a filter layer to further reduce dust dispersion.
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