초록 ▼

An improved nasal cannula for isolating, monitoring and measuring the content of a patients exhaled gases. The cannula includes an integral connector that is attached to the wall of a hollow nare to create a gas-tight interface. The other end of the connector is attached to tubing that forms an inte

An improved nasal cannula for isolating, monitoring and measuring the content of a patients exhaled gases. The cannula includes an integral connector that is attached to the wall of a hollow nare to create a gas-tight interface. The other end of the connector is attached to tubing that forms an integral seal with the cannula port to create a continuous, gas-tight flow channel that is separated from the hollow cannula body. The integral connector provides a direct, isolated flow channel that eliminates the undesirable dead space in which exhaled gases from a patient can be entrapped and stagnate, resulting in cross contamination.

대표청구항 ▼

1. A nasal cannula for administering treating gases to a patient that eliminates the dead space through which a patients exhalation gases pass, and provides a direct, isolated flow channel, comprising:(a) a hollow body with two hollow nasal nares that are designed to fit into the nasal passage of a

1. A nasal cannula for administering treating gases to a patient that eliminates the dead space through which a patients exhalation gases pass, and provides a direct, isolated flow channel, comprising:(a) a hollow body with two hollow nasal nares that are designed to fit into the nasal passage of a patient;(b) a connector with one end attached to a wall of one of said hollow nasal nares and the other end of said connector attached to tubing which attaches to an exhalation port of said hollow body, whereby creating a flow channel that is sealed and isolated from said hollow body;(c) said hollow body also having an inhalation port with a means for connecting tubing to a source of treating gas, and having an exhalation port with a means for connecting tubing to a monitoring device. 2. The nasal cannula of claim 1 wherein said connector attaches to the wall of said nasal nare to form a gas-tight interface. 3. The nasal cannula of claim 1 wherein said connector attaches to said tubing that attaches to said exhalation port to form a gas-tight interface. 4. The nasal cannula of claim 1 wherein the first of said two nasal nares is supplied with said patients treating gas. 5. The nasal cannula of claim 1 wherein the second of said two nasal nares discharges said patient's exhalation gases directly through said connector.