Patent ID: 7629039

Claim:
A window for use in an adapter ( 3 ) for an IR gas analyser for the analysis of respiratory gases, where the gases flow through a through-penetrating passageway ( 9 ) in the adapter ( 3 ) with a window ( 8 ) disposed on mutually opposite sides of the passageway ( 9 ) so that an IR beam can be sent through the windows ( 8 ) and the passageway ( 9 ) containing said breathing gases, wherein the window ( 8 ) is a one-piece structure made of plastic material and having a round basic shape that includes a surrounding edge ( 8 ″) and a central part ( 8 ′) which is sunken in relation to said edge ( 8 ″) and which constitutes the window through which the IR rays shall be able to pass, and a center part of the window ( 8 ) generally lies flush with an inner wall surface ( 7 ′).