Mallinckrodt, Inc.

Mallinckrodt Medical, Inc.

David Frigger

John Zowtiak

John O'Mahony

J Michael Stuart

An in-line phonation valve system including a valve body having first and second ends through which gas passes into and out of the valve body. The first end is connectable to a breathing tube connected to a patient's airway, for passage of gas between the breathing tube and the valve body. The second end of the valve body is connectable to a gas line. A diaphragm-valve assembly is provided which includes a one-way valve having a phonation position permitting gas to pass through said valve body toward said patient when said patient inhales. The one-way valve in the phonation position substantially prevents gas from passing through the valve body when the patient exhales. The diaphragm-valve assembly is movable out of the phonation position, so as to permit substantially free flow of gas through the valve body both toward and away from the patient when the patient respectively inhales and exhales. The diaphragm-valve assembly is movable from the phonation position without disconnecting the first end from the breathing tube and the second end from the gas line. Preferably, the diaphragm-valve assembly is a removable cartridge which is replaceable with a free-flowing ring cartridge insert.

Bi-functional in-line phonation valve

A positive locking device for connecting an inner cannula within an outer cannula to form a tracheostomy tube device. The tracheostomy device is provided with a connector head or connector body having ribs and or lips with associated catches disposed thereon. Cantilevered members with latch receiving members corresponding to the catches are provided on the component (connector or connector head) not having the rib or lip. Alternatively, catches may be associated with cantilevered members and latch receiving members with lips or ribs. Catches and latch receiving surfaces interlock and a securing component is fixed over the connector and connector head to create a positive lock.

Positive locking cannula

A tracheostomy device having an inner cannula with a connector head and an outer cannula. The inner cannula is secured within the outer cannula by a locking device having spaced apart, elongated handles that are pivotally mounted on the inner cannula. The handles are spaced such that a connector may be mounted on the connector head, thereby preventing movement of the handles. A method of locking the inner cannula to the outer cannula is also described.

Growing community of inventors

Lake Forest, CA, United States of America

David Frigger