Patent ID: 8028695
Filing Date: 2011-10-04
Classification: A61M

Abstract:
1. A mechanical ventilation system for providing medical gas to a patient, the mechanical ventilation system comprising: a source of medical gas; a patient connection to facilitate the delivery of the medical gas to the patient wherein the patient connection is a helmet pneumatically connected about a head of the patient; a conduit connecting the source of medical gas to the patient connection, the conduit comprising at least one conduit section or module; means for controlling a flow of medical gas, the means receives the medical gas from the source of medical gas, controls the flow of the medical gas. and imparts a noise component on the flow of the medical gas; and a sound dampening apparatus connected intermediate the patient connection and the means for controlling the flow of medical gas, the sound dampening apparatus comprising an inlet, an outlet, and an outer case physically connecting the inlet to the outlet and forming a sound dampening chamber pneumatically connecting the inlet to the outlet; wherein the sound dampening apparatus reduces the noise experienced by the patient due to the provision of the medical gas without substantially increasing the pneumatic resistance between the source of medical gas and the patient connection.