US 12,133,956 B2
Fluid flowback prevention in a wye-piece connector
David Robert Kemps, Auckland (NZ); Sally Margaret Hensman, Auckland (NZ); Kevin Blake Powell, Auckland (NZ); and Katie Fyfe, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Jun. 3, 2020, as Appl. No. 16/892,153.
Application 16/892,153 is a continuation of application No. 15/511,093, abandoned, previously published as PCT/NZ2015/050151, filed on Sep. 17, 2015.
Claims priority of provisional application 62/051,860, filed on Sep. 17, 2014.
Prior Publication US 2020/0289780 A1, Sep. 17, 2020
Int. Cl. A61M 16/08 (2006.01); A61M 15/00 (2006.01); A61M 16/00 (2006.01); A61M 16/10 (2006.01); A61M 16/16 (2006.01)
CPC A61M 16/0833 (2014.02) [A61M 15/009 (2013.01); A61M 16/0069 (2014.02); A61M 16/08 (2013.01); A61M 16/0808 (2013.01); A61M 16/0841 (2014.02); A61M 16/0875 (2013.01); A61M 16/109 (2014.02); A61M 16/1095 (2014.02); A61M 16/16 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3653 (2013.01); A61M 2209/082 (2013.01); A61M 2209/084 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A wye-piece connector configured to be used in a respiratory assistance system, the wye-piece connector comprising:
an inspiratory branch including an inspiratory conduit port and a meter-dosed inhaler (MDI) port;
an expiratory branch including an expiratory conduit port;
a patient end including a patient interface port; and a body comprising the inspiratory branch, the expiratory branch, and the patient end, wherein the body is formed by a first fluid passageway between the inspiratory conduit port and the patient interface port and a second fluid passageway between the expiratory conduit port and the patient interface port;
wherein the inspiratory branch further comprises a tip that extends inwardly from an inner surface of the second fluid passageway into the second fluid passageway,
the tip comprising an inspiratory branch end, the inspiratory branch end being at an angle relative to a patient interface port end such that the inspiratory branch end is oblique to a longitudinal axis extending through the patient interface port and the expiratory conduit port,
wherein the MDI port is positioned between the inspiratory conduit port and the tip, and wherein the MDI port is located on a section of the inspiratory branch with a tapered inner diameter and a tapered outer diameter;
wherein the tip of the inspiratory branch comprises a lip, the lip configured to obstruct or impede condensate from entering into the inspiratory branch.