| CPC A61M 16/0057 (2013.01) [A61M 11/02 (2013.01); A61M 16/0066 (2013.01); A61M 16/024 (2017.08); A61M 16/06 (2013.01); A61M 16/0833 (2014.02); A61M 16/0875 (2013.01); A61M 16/105 (2013.01); A61M 16/106 (2014.02); A61M 16/107 (2014.02); A61M 16/20 (2013.01); A61M 16/0488 (2013.01); A61M 16/0816 (2013.01); A61M 2205/14 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/3561 (2013.01); A61M 2205/3592 (2013.01); A61M 2205/502 (2013.01); A61M 2205/505 (2013.01); A61M 2205/52 (2013.01); A61M 2205/584 (2013.01); A61M 2205/6054 (2013.01); A61M 2205/6072 (2013.01); A61M 2205/8206 (2013.01); A61M 2230/00 (2013.01)] | 26 Claims |

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1. A respiratory therapy apparatus comprising
a housing having a hose port extending from a front wall of the housing and defining a pneumatic passage through the front wall,
a tag reader located in the housing and having a first antenna situated adjacent an inner surface of the front wall and surrounding the hose port,
a filter housing sized to couple to the hose port, the filter housing having a filter receiving space positioned between a filter inlet and a filter outlet, a filter passage extending though the filter housing between the filter inlet and the filter outlet,
a filter located in the filter receiving space,
a second antenna coupled to the filter housing and surrounding the filter passage, and
an identification (ID) chip carried by the filter housing and coupled to the second antenna, wherein the tag reader is configured to read the ID chip via wireless signals between the first antenna and the second antenna to confirm the filter housing is an authorized filter housing for use with the respiratory therapy apparatus, wherein the first antenna comprises a substantially flat annular ring that is substantially parallel with the filter and a set of mounting ears extending radially outwardly from the substantially flat annular ring.
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