Nasal and oral cannula breathing detection device
First Claim
1. A cannula comprising:
- a hollow main body having opposed first and second ends, and the main body defining an internal chamber therein;
at least a first nasal prong communicating with the internal chamber of the main body and defining a first nasal prong passage;
a mouthpiece having a gas passageway and a retainer passageway, a first end of the gas passageway communicating with the internal chamber of the main body while a second free end of the mouthpiece having a gas passageway opening therein; and
an elongate shape retaining member having a first end and a second end, the shape retaining member being received within the retainer passageway with the first end of the shape retaining member located adjacent the main body and the second end of the shape retaining member being located adjacent the second free end of the mouthpiece.
12 Assignments
0 Petitions
Accused Products
Abstract
A cannula comprising a main body which defines an internal chamber therein. A first and second nasal prongs, respectively, communicate with the internal chamber to define first and second nasal prong passages. A mouthpiece has a gas passageway and a retainer passageway and a first end of the gas passageway communicates with the internal chamber while a second free end of the mouthpiece has a gas opening therein. A shape retaining member is received within the retainer passageway to facilitate retaining an adjusted position of an opening of the gas passageway with respect to a remainder of the cannula. A method of forming the cannula is also disclosed.
-
Citations
29 Claims
-
1. A cannula comprising:
-
a hollow main body having opposed first and second ends, and the main body defining an internal chamber therein;
at least a first nasal prong communicating with the internal chamber of the main body and defining a first nasal prong passage;
a mouthpiece having a gas passageway and a retainer passageway, a first end of the gas passageway communicating with the internal chamber of the main body while a second free end of the mouthpiece having a gas passageway opening therein; and
an elongate shape retaining member having a first end and a second end, the shape retaining member being received within the retainer passageway with the first end of the shape retaining member located adjacent the main body and the second end of the shape retaining member being located adjacent the second free end of the mouthpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of manufacturing a nasal cannula comprising the steps of:
-
assembling a cannula mandrel assembly comprising separable components with the separable components including a main body forming mandrel, at least one nare forming mandrel, and a mouthpiece forming mandrel;
heating the assembled cannula mandrel assembly to a desired temperature;
applying at least one coating of an uncured cannula forming polymeric material to the cannula mandrel assembly to provide a desired material thickness of coating on the cannula mandrel assembly;
sufficiently curing the coating applied to the cannula mandrel assembly; and
disassembling the cannula mandrel assembly and withdrawing the at least one nare forming mandrel, and mouthpiece forming mandrel and the main body forming mandrel from the manufactured cannula. - View Dependent Claims (18, 19, 20, 21, 22, 23)
-
-
24. A cannula comprising:
-
a hollow main body having opposing openings at a first and second ends;
a first nasal prong and a second nasal prong defining a respective first and second nasal prong passages communicating with the hollow main body of the cannula;
a mouthpiece passage for receiving a separate mouthpiece. - View Dependent Claims (25, 26)
-
-
27. A method of forming a nasal cannula comprising the steps of:
-
providing a cannula mandrel assembly, said assembly comprising separable parts including at least one nare forming mandrel, at least one mouthpiece mandrel having an extension, and a main body forming mandrel comprising two separate components defining a void therebetween;
heating the cannula mandrel assembly to a desired temperature;
providing an uncured cannula forming polymeric material in flowable state;
applying at least one coating of the material to the cannula mandrel assembly to provide a desired coating material thickness on the cannula mandrel assembly to form the cannula;
curing the material coating the cannula mandrel assembly; and
disassembling the cannula mandrel assembly and withdrawing the at least one nare forming mandrel, the at least one mouthpiece mandrel and extension and the two separate components of the main body forming mandrel from the cannula; and
attaching a separate mouthpiece to the cannula via an attachment portion formed on the cannula by the mouthpiece mandrel and extension. - View Dependent Claims (28, 29)
-
Specification