Method and apparatus for preventing drug reservoir overfill

Details Method and apparatus for preventing drug reservoir overfill Method and apparatus for preventing drug reservoir overfill

2011-02-15

2011-02-15

Maust, Timothy L (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Automatic control of flow cutoff or diversion

Level or overflow responsive

C141S007000, C141S018000, C141S095000, C141S366000, C137S413000, C128S203190

Reexamination Certificate

active

07886780

ABSTRACT:
A reservoir for an anesthetic vaporizer is disclosed herein. The reservoir includes an open interior and a high-pressure channel in communication with the open interior. The high-pressure channel is configured to transfer an anesthetic agent from a storage container into the open interior when a pressure level within the storage container exceeds a pressure level within the open interior. The reservoir also includes a low-pressure channel in communication with the open interior. The low-pressure channel is configured to transfer the anesthetic agent from the storage container into the open interior when the pressure level within the storage container is less than or approximately equal to the pressure level within the open interior. The low-pressure channel and the high-pressure channel are configured to prevent the open interior from being overfilled with the anesthetic agent under conditions wherein the pressure level within the storage container exceeds the pressure level within the open interior.

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patent: 6138672 (2000-10-01), Kankkunen
patent: 6745800 (2004-06-01), Sansom
patent: 7287557 (2007-10-01), Bunke et al.

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