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US 12,106,929 B2Granted
Refillable ion chamber with automated purging system
AssigneeVarian Medical Systems, Inc.
InventorsAmir Shojaei, Philip Adamson, Flavio Poehlmann-Martins
Life of this patent
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Abstract
An apparatus includes an ion chamber and a valve assembly. The ion chamber may include a housing enclosing a gas and one or more electrodes. The valve assembly is coupled to the ion chamber allowing control of replacement of the gas within the housing.
Claims18
A gas replacement apparatus, the gas replacement apparatus comprising:
- an ion chamber, the ion chamber including a housing enclosing a gas and an electrode, the housing including,
- a first hermetically sealed chamber enclosing a first portion of the gas, and
- a second hermetically sealed chamber enclosing a second portion of the gas;
- and
- a valve assembly including a first valve and a second valve, the first valve being coupled to the first hermetically sealed chamber and the second valve being coupled to the second hermetically sealed chamber.
2 more elements
A method of refurbishing an ion chamber, the method comprising:
- supplying a replacement of a first portion of gas to a first hermetically sealed chamber of a housing of the ion chamber via a first valve;
- supplying a replacement of a second portion of the gas to a second hermetically sealed chamber of the housing of the ion chamber via a second valve;
- removing the first portion of the gas from the first hermetically sealed chamber of the housing via the first valve;
- and
- removing the second portion of the gas from the second hermetically sealed chamber of the housing via the second valve.
2 more elements
Dependencies are inferred from the claim text.