US 12,453,827 B2
Nebulizer gas scavenger system with medication recycling and consumption metering
Peter Kahn, Bronx, NY (US)
Assigned to Yale University, New Haven, CT (US)
Filed by Yale University, New Haven, CT (US)
Filed on Feb. 24, 2022, as Appl. No. 17/680,154.
Prior Publication US 2023/0263975 A1, Aug. 24, 2023
Int. Cl. A61M 16/00 (2006.01); A61M 1/00 (2006.01); A61M 16/08 (2006.01); A61M 16/20 (2006.01)
CPC A61M 16/0054 (2013.01) [A61M 1/70 (2021.05); A61M 1/784 (2021.05); A61M 16/009 (2013.01); A61M 16/0808 (2013.01); A61M 16/208 (2013.01); A61M 2205/3379 (2013.01); A61M 2205/3606 (2013.01); A61M 2205/3673 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A nebulizer gas scavenging system comprising:
an inspiratory pathway leading to a facemask, and an expiratory pathway leading from the facemask,
wherein the inspiratory pathway further comprises a nebulizer with an input for a medical liquid, the nebulizer is configured to convert the medical liquid to an aerosol suitable for inhalation and to supply thereof through the inspiratory pathway to the facemask,
wherein the expiratory pathway further comprises a condenser configured to extract liquid from expiratory gases originating at the facemask, wherein the condenser comprises:
a convoluted, actively cooled flow pathway for expiratory gases,
a drain configured to direct the liquid extracted from the expiratory gases to a liquid container, thereby separating the extracted liquid from the expiratory gases,
a thermoelectric cooler using a Peltier effect, which, in turn, comprises a cooling side thermally coupled to the convoluted pathway of the condenser, and a heater side configured to warm the medical liquid of the nebulizer,
wherein the expiratory pathway with the condenser therein is further configured to perform at least one of the following actions with the extracted liquid:
(i) sequester the extracted liquid for subsequent disposal,
(ii) determine at least one parameter of the extracted liquid, or
(iii) direct the extracted liquid to the input of the nebulizer.