New method for removing CO2 in anesthesia circuits

A New and Innovative Method for CO2 Removal in Anesthetic Circuits:

Not applicable Interventional DMF Medical Incorporated · NCT03014336

This study is testing a new CO2 filter for anesthesia machines to see if it safely removes carbon dioxide while keeping anesthetic gases intact, making it better for patients and the environment.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment450 (estimated)
SexAll
SponsorDMF Medical Incorporated Industry-sponsored
Locations2 sites (Halifax, Nova Scotia and 1 other locations)
Trial IDNCT03014336 on ClinicalTrials.gov

What this trial studies

This study evaluates a novel CO2 filter called memsorb, developed by DMF Medical, which utilizes advanced medical membrane technology to filter CO2 from anesthetic circuits. Unlike traditional chemical absorbers, memsorb selectively allows CO2 to escape while retaining anesthetic vapors, addressing safety concerns and environmental impacts associated with chemical granulates. The device is designed to fit seamlessly into existing anesthetic systems, making it a practical alternative for healthcare providers. The trial aims to assess the effectiveness and safety of this innovative approach in a clinical setting.

Who should consider this trial

Good fit: Ideal candidates include English-speaking patients classified as low to medium risk by the American Society of Anesthesiologists.

Not a fit: Patients who are pregnant, have high-risk classifications, or suffer from severe respiratory diseases will not benefit from this study.

Why it matters

Potential benefit: If successful, this technology could enhance patient safety and reduce environmental waste associated with anesthesia.

How similar studies have performed: While this approach is innovative, similar studies have not been widely reported, indicating that this technology may be novel and untested in clinical settings.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* American Society of Anesthesiologists Physical Status Class I, II, III (low-medium risk patient)
* English-speaking patients

Exclusion Criteria:

* Self-reported as pregnant
* American Society of Anesthesiologists Physical Status Class IV (high risk patient)
* Patients scheduled for emergency surgery
* Documented respiratory disease, including COPD and severe asthma
* Documented elevated pressure in the brain (intra cranial pressure, ICP)

Where this trial is running

Halifax, Nova Scotia and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Anesthesiaco2 removal, anesthesia
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.