Patent ID: 6298845
Filing Date: 2001-10-09
Classification: A61M

Abstract:
A vaporizer for vaporizing a liquid anaesthetic, comprising:an inlet for carrier gas;an outlet for said carrier gas and vaporized anaesthetic;a flow channel connecting said inlet to said outlet;a chamber containing liquid anaesthetic;a first connection between said flow channel and said chamber;a second connection between said flow channel and said chamber downstream of said first connection;a throttle disposed in said flow channel between said first connection and said second connection;said second connection comprising a conduit having a first end immersed in said liquid anaesthetic in said chamber, and having a second end opposite to said first end; anda valve connected to said second end of said conduit, said valve opening when a predetermined drop in pressure occurs across said throttle to allow liquid anaesthetic to be dispensed from said chamber into said flow channel.