Patent ID: 8720444

Claim:
A breathing assistance apparatus comprising: a main body unit having a rearwall, a frontwall, a connecting wall connected between said rearwall and said frontwall to define a chamber thereamong, said rearwall having an insert hole in fluid communication with said chamber, said frontwall having a coupling hole in fluid communication with said chamber, said connecting wall having a rearwall-connecting portion connected to said rearwall, and a frontwall-connecting portion connected between said frontwall and said rearwall-connecting portion, said frontwall-connecting portion having a thickness smaller than that of said rearwall-connecting portion so as to allow for floating movement of said frontwall relative to said rearwall; a head strap unit connected to said main body unit; a nasal prong unit including a main plate inserted into said main body unit and aligned with said insert hole, and two nasal prongs disposed on said main plate; and an intake unit mounted to said main body unit and extending into said coupling hole in said main body unit.