Compressible connector for an inner cannula

Patent metadata

Field	Value
Publication number	US-11040160-B2
Application number	US-201816192485-A
Country	US
Kind code	B2
Filing date	Nov 15, 2018
Priority date	Aug 2, 2012
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A tracheal tube assembly includes an outer cannula configured to be positioned in a patient airway and an inner cannula configured to be disposed inside the outer cannula. The tracheal tube assembly further includes a flange member secured about the outer cannula, and an outer cannula connector coupled to a proximal end of the outer cannula. The inner cannula includes a compressible proximal end region that is compressed while secured inside the outer cannula connector.

First claim

What is claimed is:

1. A tracheal tube, comprising:
a connector comprising an inner wall;
a cannula configured to be inserted at least partially in the connector, wherein the cannula comprises a compressible proximal region comprising:
a first ear; and
a second ear separated from the first ear by opposing notches formed in a wall of the compressible proximal region, and wherein the first ear and the second ear are configured to be biased toward one another when the cannula the compressible proximal region is coupled to the connector; and
a rotational lock comprising at least one of a first recess or a first protrusion, wherein the at least one of the first recess or the first protrusion is disposed on the inner wall of the connector, and at least one of a second protrusion or a second recess, wherein the at least one of the second protrusion or the second recess is disposed on an outer surface of the first ear, the second ear, or both, wherein the rotational lock is configured to block rotation of the cannula when the at least one of the first recess or the first protrusion engages with the at least one of the second protrusion or the second recess.

2. The tracheal tube of claim 1 , wherein the at least one of the second protrusion or the second recess is positioned approximately 90 degrees from each notch of the opposing notches.

3. The tracheal tube of claim 1 , wherein the cannula comprises a lip forming a proximal terminus of the cannula and configured to be outside of and proximal to the connector when the cannula is inserted in the connector.

4. The tracheal tube of claim 1 , wherein an outer diameter of the compressible proximal region varies between a proximal end and a distal end of the compressible proximal region.

5. The tracheal tube of claim 1 , wherein the compressible proximal region of the cannula comprises a sloped region formed proximate to the at least one of the second recess or the second protrusion.

6. The tracheal tube of claim 1 , wherein the at least one of the second protrusion or the second recess forms a partial ring with an arc having less than 45 degrees of a circumference of the compressible proximal region.

7. The tracheal tube of claim 1 , wherein the at least one of the second protrusion or the second recess forms a ring about a circumference of the compressible proximal region.

8. The tracheal tube of claim 1 , comprising an outer cannula coupled to and extending away from a distal end of the connector, wherein the cannula is disposed within the outer cannula when the cannula is inserted in the connector such that a distal end of the cannula is adjacent to the distal end of the outer cannula.

9. A tracheal tube, comprising:
an outer cannula configured to be positioned within a patient's airway;
an outer cannula connector coupled to a proximal end of the outer cannula and comprising at least one of a first recess or a first protrusion disposed on an inner wall of the outer cannula connector; and
an inner cannula configured to be inserted at least partially in the outer cannula connector such that a distal end of the inner cannula is adjacent to a distal end of the outer cannula wherein the inner cannula, comprises a compressible proximal region configured to be positioned within the outer cannula connector, wherein the compressible proximal region has a compressed configuration comprising a first diameter when positioned within the outer cannula connector and an uncompressed configuration comprising a second diameter larger than the first diameter when the compressible proximal region is unbiased and outside of the outer cannula connector, and wherein the compressible proximal region comprises at least one of a second protrusion or a second recess, wherein the at least one of the second protrusion or the second recess is disposed on an outer surface of the compressible proximal region, wherein the at least one of the second protrusion or the second recess is complementary to the at least one of the first recess or the first protrusion and is configured to engage with the first recess or the first protrusion to block rotation of the inner cannula when the compressible proximal region is disposed within and coupled to the outer cannula connector.

10. The tracheal tube of claim 9 , wherein the at least one of the second protrusion or the second recess is sized to engage with the at least one of the first recess or the first protrusion.

11. The tracheal tube of claim 9 , wherein the compressible proximal region of the inner cannula comprises a sloped region formed distal to the at least one of the second protrusion or the second recess.

12. The tracheal tube of claim 9 , wherein the at least one of the second protrusion or the second recess forms a partial ring with an arc having less than 45 degrees of a circumference of the compressible proximal region.

13. The tracheal tube of claim 9 , wherein the compressible proximal region comprises a first ear and a second ear separated from the first ear by opposing notches formed in a wall of the compressible proximal region, wherein each notch of the opposing notches is adjacent to both the first and second ears such that the first and second ears are joined at a distal terminus of each notch of the opposing respective notches, and wherein the first and second ears are configured to be biased toward one another to place the compressible proximal region in the compressed configuration.

14. An inner cannula configured to be inserted at least partially in an outer cannula connector coupled to a proximal end of an outer cannula comprising:
a compressible proximal region configured to be positioned within the outer cannula connector, wherein the compressible proximal region has a compressed configuration comprising a first diameter when positioned within the outer cannula connector and an uncompressed configuration comprising a second diameter larger than the first diameter when the compressible proximal region is unbiased and outside of the outer cannula connector;
a lip forming a proximal terminus of the inner cannula and configured to be outside of and proximal to the outer cannula connector when the inner cannula is inserted in the outer cannula; and
a rotational lock comprising at least one of a recess or a protrusion disposed on an outer surface of the compressible proximal region, wherein the at least one of the recess or the protrusion is configured to engage the outer cannula connector to block rotation of the inner cannula when the compressible proximal region is disposed within and coupled to the outer cannula connector.

15. The inner cannula of claim 14 , wherein the at least one of the recess or the protrusion forms a partial ring with an arc having less than 45 degrees of a circumference of the compressible proximal region.

16. The inner cannula of claim 14 , wherein the at least one of the recess or the protrusion forms a ring about a circumference of the compressible proximal region.

17. The inner cannula of claim 14 , wherein an outer diameter of the compressible proximal decreases toward a distal end of the inner cannula.

Assignees

• Covidien Lp

Inventors

• Bruggeman Martin
• Ryan James Michael
• Kiernan Declan
• Finneran Alan

Classifications

• A61M16/0497

  Tube stabilizer · CPC title

• A61M16/0486

  Multi-lumen tracheal tubes · CPC title

• A61M16/0429

  with non-integrated distal obturators · CPC title

• A61M16/0488

  Mouthpieces; Means for guiding, securing or introducing the tubes (guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02) · CPC title

• A61M16/0427 Primary

  with removable and re-insertable liner tubes, e.g. for cleaning · CPC title