Patent ID: 6722362
Filing Date: 2004-04-20
Classification: A61M,Y10S

Abstract:
A tracheal gas insufflation catheter comprising:hollow tube having a peripheral full defining a single lumen within the hollow tube, wherein the hollow tube is adapted to carry a flow of insufflation gas in a first direction generally into a patient during normal use of the insufflation catheter, and wherein the hollow tube has a proximal end portion adapted to be located generally outside a patient and a distal end portion adapted to be located within an airway of a patient for providing a flow of insufflation gas to such a patient; a first port defined in the peripheral wall or the distal end portion of the hollow tube so as to communicate the single lumen an environment outside the hollow tube and so as to direct a first portion of the flow of insufflation gas in a first direction generally into such a patient's respiratory responsive to the flow of insufflation gas being provided to the insufflation catheter, and a second port defined in the peripheral wall so as to communicate the lumen with such an environment outside the hollow tube and so as to direct a second portion of the flow of insufflation gas in a second direction generally out of such a patient's respiratory system responsive to the flow of insufflation gas being provided to the insufflation catheter, wherein a first vector force is associated with discharge of the flow of insufflation gas from the first port, a second vector force is associated with the discharge of the flow of insufflation gas from the second port, and wherein the vent assembly is configured and arranged such that a net of all the second vector force components in the second direction is greater than a net of all the first vector force opponents in the first direction responsive to the flow of insufflation gas exiting the insufflation catheter via the first and second ports.