申请人:KONINKLIJKE PHILIPS N.V.
公开号:US20160317771A1
公开(公告)日:2016-11-03
Patient interface (
50
) optically indicating a user that a member (
22
) of the patient interface (
50
) needs to be replaced due to wear. In particular, it relates to a member (
22
) for patient interface (
50
) which comprises at least one functional material (
32, 34
) having a predefined functionality and at least one indicator (
28, 30
) wherein the concentration of said at least one indicator (
28, 30
) in said member (
22
) correlates with the predefined functionality of said at least one functional material (
32, 34
).