IP Library › Granted Patent US 12,611,117
Granted Patent B2
US 12,611,117 · App. 18/676,369 · Granted Apr 28, 2026

Nasal/oral cannula system and manufacturing

Inventors: Anders Eckerbom (Danderyd, SE); Robert Zyzanski (Danderyd, SE)
Assignee: Masimo Corporation
A61B5/097A61M16/0666A61M16/0672A61M16/085B29C45/006B29C45/261B29C45/33B29C45/44A61B2562/12A61M2230/432B29C65/4895B29C65/523B29C66/1282B29C66/1284B29C66/52241B29L2023/007
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Quick Facts
Patent No.
US 12,611,117
App. No.
18/676,369
Filed
May 28, 2024
Granted
Apr 28, 2026
Kind
B2
Art Unit
1746
USPC
600/543
Abstract

A nasal/oral cannula for collecting a flow of exhaled gases and its method of manufacture are disclosed. The cannula comprises an elongated tubular body having a first and a second end portion, a surface and an internal volume; a wall internally disposed within said tubular body, said wall defining a first subvolume of said internal volume in the lengthwise direction of the tubular body; and an inlet through said surface, for introducing exhaled gases into said first subvolume. The first end portion defines an exit port for exhaled gases from said subvolume, and said wall is arranged directly adjacent to said inlet.

Claims (56)

1 . A respiratory cannula system comprising:

a treating gas tube configured to receive treating gas from a gas source;

a first nozzle configured to receive the treating gas from the treating gas tube;

a cannula comprising:

a tubular body comprising a first end, a second end opposite the first end, and an interior, said first end configured to connect to the first nozzle;

a wall arranged within the interior of the tubular body and configured to divide the interior of the tubular body into a first interior portion and a second interior portion, said first interior portion configured to receive said treating gas from the first nozzle;

an outlet extending through the tubular body and in fluid communication with the first interior portion;

a first nostril prong extending outward from the tubular body at the outlet and configured to direct said treating gas to a first nostril of a subject;

a first inlet extending through the tubular body and in fluid communication with the second interior portion;

a second nostril prong extending outward from the tubular body at the first inlet and configured to direct gases exhaled from a second nostril of the subject into said second interior portion; and

a second inlet extending through the tubular body and in fluid communication with the second interior portion, wherein said wall is integrally formed with the tubular body at the second inlet and is oriented perpendicular relative to an axis extending through a center of the tubular body;

an oral breath collector configured to connect to the tubular body at the second inlet and direct gases exhaled from a mouth of the subject into said second interior portion;

a second nozzle configured to connect to the second end of the tubular body and receive said gases exhaled from the subject's second nostril and mouth via said second interior portion; and

a sampling tube configured to receive said exhaled gases from the second nozzle and direct said exhaled gases to a gas analyzer.

2 . The respiratory cannula system of claim 1 , wherein the wall of the cannula is parallel to an axis extending through the second inlet of the cannula.

3 . The respiratory cannula system of claim 1 , wherein the cannula further comprises a third prong extending from the tubular body at the second inlet and configured to direct the gases exhaled from the subject's mouth to the second inlet, and wherein the oral breath collector is configured to connect to the third prong.

4 . The respiratory cannula system of claim 3 , wherein the oral breath collector comprises a curved body, a channel extending along a portion of the curved body, and an aperture at a top of the channel, and wherein the aperture is configured to receive a portion of the third prong of the cannula.

5 . The respiratory cannula system of claim 1 , wherein said tubular body further comprises a length L extending between the first and second ends, and wherein said second inlet is disposed at a distance of about L/2 from said first end.

6 . A respiratory cannula system comprising:

a cannula comprising:

a tubular body comprising a first end, a second end opposite the first end, and an interior;

a wall configured to divide the interior of the tubular body into a first interior portion and a second interior portion, said first interior portion configured to receive treating gas;

an outlet extending through the tubular body and in fluid communication with the first interior portion;

a first nostril prong extending outward from the tubular body at the outlet and configured to direct said treating gas to a first nostril of a subject;

a first inlet extending through the tubular body and in fluid communication with the second interior portion;

a second inlet extending through the tubular body and in fluid communication with the second interior portion, wherein said wall is integrally formed with the tubular body at the second inlet; and

a second nostril prong extending outward from the tubular body at the first inlet and configured to direct gases exhaled from a second nostril of the subject into said second interior portion; and

an oral breath collector configured to connect to the tubular body at the second inlet and direct gases exhaled from a mouth of the subject into said second interior portion;

wherein said second interior portion is configured to direct said gases exhaled from the subject's second nostril and mouth towards the second end of the tubular body.

7 . The respiratory cannula system of claim 6 , wherein the wall of the cannula is parallel to an axis extending through the second inlet of the cannula.

8 . The respiratory cannula system of claim 6 , wherein the cannula further comprises a third prong extending from the tubular body at the second inlet and configured to direct the gases exhaled from the subject's mouth to the second inlet, and wherein the oral breath collector is configured to connect to the third prong.

9 . The respiratory cannula system of claim 8 , wherein the oral breath collector comprises a curved body, a channel extending along a portion of the curved body, and an aperture at a top of the channel, and wherein the aperture is configured to receive a portion of the third prong of the cannula.

10 . The respiratory cannula system of claim 6 , further comprising:

a treating gas tube configured to receive said treating gas from a gas source and provide said treating gas to said first interior portion; and

a sampling tube configured to receive said gases exhaled from the subject's second nostril and mouth via said second interior portion and direct said exhaled gases to a gas analyzer.

11 . The respiratory cannula system of claim 10 , further comprising:

a first nozzle configured to connect the treating gas tube to the first end of the tubular body; and

a second nozzle configured to connect the sampling tube to the second end of the tubular body.

12 . The respiratory cannula system of claim 6 , wherein said wall is oriented perpendicular relative to an axis extending through a center of the tubular body.

13 . A respiratory cannula comprising:

a tubular body comprising a first end, a second end opposite the first end, and an interior;

a wall configured to divide the interior of the tubular body into a first interior portion and a second interior portion, said first interior portion configured to receive treating gas;

an outlet extending through the tubular body and in fluid communication with the first interior portion;

a first nostril prong extending outward from the tubular body at the outlet and configured to direct said treating gas to a first nostril of a subject;

a first inlet extending through the tubular body and in fluid communication with the second interior portion;

a second nostril prong extending outward from the tubular body at the first inlet and configured to direct gases exhaled from a second nostril of the subject into said second interior portion; and

a second inlet extending through the tubular body and in fluid communication with the second interior portion, wherein said wall is integrally formed with the tubular body at the second inlet;

wherein the respiratory cannula is configured to connect to an oral breath collector at the second inlet of the tubular body, said second inlet configured to allow gases exhaled from a mouth of the subject to flow into said second interior portion;

wherein said second interior portion is configured to direct said gases exhaled from the subject's second nostril and mouth towards the second end of the tubular body.

14 . The respiratory cannula of claim 13 , wherein the wall is parallel to an axis extending through the second inlet.

15 . The respiratory cannula of claim 13 , wherein said second end is an exit port configured to allow the gases exhaled from the subject's second nostril and mouth to exit said second interior portion.

16 . The respiratory cannula of claim 13 , wherein said first end is an entrance port configured to allow the treating gas to enter said first interior portion.

17 . The respiratory cannula of claim 13 , wherein the second end is configured to connect to a second nozzle, said second nozzle configured to deliver the gases exhaled from the subject's second nostril and mouth to a sampling tube.

18 . The respiratory cannula of claim 13 , wherein the first end is configured to connect to a first nozzle, said first nozzle configured to deliver the treating gas to said first interior portion of the respiratory cannula.

19 . The respiratory cannula of claim 13 , wherein said tubular body further comprises a length L extending between the first and second ends, and wherein said second inlet is disposed at a distance of about L/2 from said first end.

20 . The respiratory cannula of claim 13 , further comprising a third prong extending from the tubular body at the second inlet and configured to direct the gases exhaled from the subject's mouth to the second inlet, and wherein the oral breath collector is configured to connect to the third prong.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2024
From: MASIMO SWEDEN AB
To: MASIMO CORPORATION
Reel/Frame 067896/0748 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 1, 2024
From: ECKERBOM, ANDERS; ZYZANSKI, ROBERT
To: MASIMO SWEDEN AB
Reel/Frame 067889/0597 →
Continuity (4)
Continuation 16601326 · Oct 14, 2019
Continuation 15004695 · Jan 22, 2016
Provisional Application 62107232 · Jan 23, 2015
Related Publication 20240306938A1 · Sep 19, 2024
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