US 11,857,719 B2
Filter assembly
Richard John Boyes, Auckland (NZ); Christian Francis Fischer, Auckland (NZ); Ali Ghalib Abdul Rahman Ghalib, Auckland (NZ); Jessica Kristen Sloane, Auckland (NZ); Monika Baumann, Auckland (NZ); and Bernard Tsz Lun Ip, Auckland (NZ)
Assigned to FISHER & PAYKEL HEALTHCARE LIMITED, Auckland (NZ)
Appl. No. 16/466,913
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
PCT Filed Dec. 8, 2017, PCT No. PCT/NZ2017/050159
§ 371(c)(1), (2) Date Jun. 5, 2019,
PCT Pub. No. WO2018/106127, PCT Pub. Date Jun. 14, 2018.
Claims priority of provisional application 62/432,422, filed on Dec. 9, 2016.
Prior Publication US 2019/0344023 A1, Nov. 14, 2019
Int. Cl. A61M 13/00 (2006.01); A61M 16/10 (2006.01); A61M 16/16 (2006.01); A61M 16/08 (2006.01)
CPC A61M 13/003 (2013.01) [A61M 16/0875 (2013.01); A61M 16/106 (2014.02); A61M 16/1095 (2014.02); A61M 16/161 (2014.02); A61M 2202/0225 (2013.01); A61M 2205/3327 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3569 (2013.01); A61M 2205/3653 (2013.01); A61M 2205/7527 (2013.01); A61M 2205/7536 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A filter assembly for use in an insufflation system, said filter assembly being positioned, in use, between a humidification apparatus and a patient, said filter assembly comprising:
a filter medium operative to filter medical gases;
a housing comprising an inlet, an outlet and said filter medium, said housing defining a gases flow path for directing the medical gases from said inlet, through said filter medium, and out said outlet to the patient; and
at least one heating element positioned at least partially within said housing and configured to heat said filter medium, wherein said at least one heating element comprises one or more heater wires;
wherein, within said housing, said at least one heating element is spaced apart from said filter medium and from an inner surface of said housing, and wherein said at least one heating element is at least partially suspended within said housing,
wherein said at least one heating element is positioned in said gases flow path downstream from said filter medium, and
wherein said at least one heating element is configured to extend through said outlet of said housing so as to be positionable within a patient conduit connected to said outlet of said housing.