Nasal and oral cannula having two capabilities and method of...

Details Nasal and oral cannula having two capabilities and method of... Nasal and oral cannula having two capabilities and method of...

2009-07-28

2011-12-13

Douglas, Steven (Department: 3771)

Surgery

Respiratory method or device

Respiratory gas supply means enters nasal passage

C264S304000, C264S305000, C425S275000

Reexamination Certificate

active

08074652

ABSTRACT:
A method of forming a cannula from a cannula mandrel assembly comprising a pair of mouthpiece
asal mandrels and a mating facepiece mandrel. The facepiece mandrel has a pair of conical holes, in an intermediate section thereof, for receiving a leading end of one mouthpiece
asal mandrel. The conical holes allow the facepiece mandrel to slide along the mouthpiece
asal mandrels until the conical holes abut with respective mating tapering conical sections and prevent further sliding movement along the mouthpiece
asal mandrels. Following assembly, the assembly is heated, at least one coating of a polymeric material is applied thereto and heat from the assembly at least partially cures the polymeric material on the assembly. Following curing, the facepiece mandrel and formed cannula are slide along the mouthpiece
asal mandrels until the facepiece mandrel and formed cannula are removed therefrom. Lastly, the facepiece mandrel is removed from the formed cannula.

REFERENCES:
patent: 2001/0031929 (2001-10-01), O'Toole
patent: 2005/0103347 (2005-05-01), Curti et al.
patent: 3-500496 (1991-02-01), None
patent: 7-37730 (1995-07-01), None
patent: 89/09565 (1989-10-01), None

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