Airway adaptor for measurement of gas concentration
First Claim
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1. An airway adaptor for measurement of a gas concentration comprising:
- a flow tube through which a respiratory gas flows;
transparent windows formed at opposed positions of side walls of said flow tube, and allowing infrared light to be transmitted therethrough; and
a water path formed on said side walls for diverting waterdrops around said transparent windows.
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Accused Products
Abstract
Windows 2 which allow infrared light to be transmitted therethrough are opened at opposed positions of side walls of a flow tube 1, respectively. A hexagonal frame 6 is air tightly attached to each of the apertures. Each frame 6 is protruded from the inner face of the flow tube 1. A transparent window on which an anti-fogging layer 5 is formed stretches on the inner face of each of the frame 6, so that waterdrops flowing through the flow tube 1 are caused to flow along both the sides of the frame 6, thereby preventing the waterdrops from flowing over the anti-fogging layer 5.
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Citations
13 Claims
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1. An airway adaptor for measurement of a gas concentration comprising:
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a flow tube through which a respiratory gas flows;
transparent windows formed at opposed positions of side walls of said flow tube, and allowing infrared light to be transmitted therethrough; and
a water path formed on said side walls for diverting waterdrops around said transparent windows. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A flow tube adapter for measuring a concentration of respiratory gases in a respiratory flow tube, said flow tube adapter comprising:
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a body portion;
apertures formed in said body portion, wherein each aperture is positioned on opposing walls of said body portion;
windows made of transparent material disposed in said body portion to cover said apertures; and
liquid path diversion sections disposed along an inner wall of said body portion for diverting liquid present in said body portion around said windows. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A respirator having flow tube adapter for measuring a concentration of respiratory gases in a respiratory flow tube, said flow tube adapter comprising:
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a body portion;
apertures formed in said body portion, wherein each aperture is positioned on opposing walls of said body portion;
windows made of transparent material disposed in said body portion to cover said apertures; and
liquid path diversion sections disposed along an inner wall of said body portion for diverting liquid present in said body portion around said windows.
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Specification