Non-rebreathing valve and valve element therefor

Details Non-rebreathing valve and valve element therefor Non-rebreathing valve and valve element therefor

1994-09-26

1996-03-26

Bennett, Christopher A.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820228, 12820229, 12820311, A61M 1600, A62B 902

Patent

active

055012140

ABSTRACT:
A duck-bill valve element and a non-rebreathing valve (NRV) incorporating same. The duck-bill valve element is formed of flexible, resilient material and includes a peripheral portion continuously and sealingly attached to a housing of the NRV and a sealing portion contiguous with and extending radially inwardly of the peripheral portion, whereby the sealing portion is operable to releasably contact an internal valve seat of the valve housing. A hollow, wedge-shaped formation is contiguous with and projects from a first surface of the sealing portion. The wedge-shaped formation has a base defining an opening in the sealing portion and a distal end terminating in a slot. The valve element further includes integral structure for preventing inversion of the wedge-shaped formation under pressure applied to the wedge-shaped formation. The duck-bill valve element and the NRV may be employed in a breathing apparatus gas flow circuit between a source of respiratory gas and a patient interface component such as a respiratory mask.

REFERENCES:
patent: 3363833 (1968-01-01), Laerdal
patent: 3556122 (1971-01-01), Laerdal
patent: 4622964 (1986-11-01), Flynn
patent: 4774941 (1988-10-01), Cook
patent: 5005568 (1991-04-01), Loescher et al.
patent: 5109840 (1992-05-01), Daleiden
patent: 5279289 (1994-01-01), Kirk
patent: 5357951 (1994-10-01), Ratner

Affiliated with

Also associated with

Rating

Non-rebreathing valve and valve element therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-rebreathing valve and valve element therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-rebreathing valve and valve element therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-910596