US 10,293,128 B2 · System and method for emergency apneic oxygenation

Abstract

Techniques for emergency apneic oxygenation include a cannula having a longitudinal inner passage with an inner diameter. A distal portion has a first outer diameter greater than the inner diameter, and is made of shape memory material shaped to bend in a first direction along the inner passage. A cannula base has a second outer diameter greater than the first outer diameter. A distance from a distal end of the cannula to a proximal end of the distal portion of the cannula is less than a distance from a surface of a throat of a subject to a distal surface of an airway of the subject. The inner passage is configured to pass a catheter connected at a proximal end to an oxygen source. In various embodiments, the cannula is used with a trocar and, optionally, a system base, or supplied in a kit with a catheter.

Claims18

Dependent claims

A kit for emergency apneic oxygenation comprising:

a cannula comprising
an inner passage of an inner diameter,
a distal portion having a first outer diameter greater than the inner diameter, wherein the cannula is shaped in the distal portion to bend in a first direction along the inner passage, and wherein the distal portion is made of shape memory material, and
a cannula base having a second outer diameter greater than the first outer diameter;
a trocar configured to engage the cannula by passing through the inner passage and straightening the bent distal portion of the cannula;
a system base having an opening about equal to the first outer diameter and configured to be placed with the opening centered on an appropriate entry site on a target subject for the trocar engaged with the cannula;
and
a catheter configured to pass through the cannula after insertion of the cannula into the entry site by the engaged trocar and subsequent removal of the trocar, wherein the catheter has a length that is at least a sum of a first distance from the entry site to a sub-segmented bronchus of the target subject and a second distance from the entry site to a supply of fluid.

5 more elements

A system for emergency apneic oxygenation comprising:

a cannula comprising
an inner passage of an inner diameter,
a distal portion having a first outer diameter greater than the inner diameter, and
a cannula base having a second outer diameter greater than the first outer diameter;
a trocar configured to engage the cannula by passing through the inner passage;
and
a system base including a system base opening that has a diameter about equal to the first outer diameter, wherein at least a portion of the system base is coated with a lighted material configured to illuminate the system base opening in an absence of visible light, and wherein the system base is configured to be placed with the system base opening centered on an entry point on a target subject for the trocar engaged with the cannula,
wherein the system base comprises;
a panel including the system base opening, and
a cylinder with an outer surface shaped be received by a recess formed by a cricothyroid membrane between a thyroid cartilage and a cricoid cartilage of the target subject so that the system base opening is centered on the cricothyroid membrane to provide the entry point for the trocar.

7 more elements

Dependencies are inferred from the claim text.

System and method for emergency apneic oxygenation

Life of this patent

System and method for emergency apneic oxygenation

Life of this patent

Abstract

Claims18