Ceramic radiation source assembly with metalized seal for gas spectrometer
First Claim
1. A method for making a radiation source assembly having enhanced sealed interfaces for use in an anesthetic gas monitoring device having a sealed environment, said method comprising the steps of:
- selecting a source element for use within the anesthetic gas monitoring device for providing radiation to a detector assembly positioned within said sealed environment, said source element including an exterior ceramic layer for emitting radiation when heated to a predetermined temperature and an interior heater element disposed at least partially within said exterior ceramic layer for heating at least a portion of said exterior ceramic layer to said predetermined temperature;
first positioning a metalized portion about the exterior of said source element, said metalized portion comprising a metallic material for providing a metallic interface on said exterior ceramic layer of said source element;
first bonding said metalized portion to said source element to provide a continuous seal against gaseous contaminants along an interface between said source element and said metalized portion;
selecting a holder for providing structural support of said source and for providing a sealing surface with the anesthetic gas monitoring device;
second positioning said source element within said holder, said positioning including positioning at least a portion of said metalized portion adjacent to at least a portion of said holder; and
second bonding said holder to said metalized portion, said second bonding forming a seal against gaseous contaminants between said holder and said metalized portion.
2 Assignments
0 Petitions
Accused Products
Abstract
A radiation source assembly is provided that is particularly apt for use in an anesthetic gas monitoring device (e.g., a gas spectrometer) to enhance maintenance of initial calibration conditions therewithin. In one embodiment a respiratory gas spectrometer includes a containment assembly that defines an internal containment area(s) within which a ceramic radiation source, an optical assembly, a sample gas assembly, and a radiation detection assembly are positioned. The radiation source assembly is provided for positioning and supporting the ceramic radiation source relative to the optical assembly within an internal containment area of the gas monitor. The radiation source assembly provides for enhanced sealing between the ceramic radiation source and adjoining componentry. The radiation source assembly is selectively retractable from the containment assembly to permit periodic servicing (e.g., replacement of the radiation source) without requiring disassembly of the gas spectrometer.
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Citations
24 Claims
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1. A method for making a radiation source assembly having enhanced sealed interfaces for use in an anesthetic gas monitoring device having a sealed environment, said method comprising the steps of:
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selecting a source element for use within the anesthetic gas monitoring device for providing radiation to a detector assembly positioned within said sealed environment, said source element including an exterior ceramic layer for emitting radiation when heated to a predetermined temperature and an interior heater element disposed at least partially within said exterior ceramic layer for heating at least a portion of said exterior ceramic layer to said predetermined temperature; first positioning a metalized portion about the exterior of said source element, said metalized portion comprising a metallic material for providing a metallic interface on said exterior ceramic layer of said source element; first bonding said metalized portion to said source element to provide a continuous seal against gaseous contaminants along an interface between said source element and said metalized portion; selecting a holder for providing structural support of said source and for providing a sealing surface with the anesthetic gas monitoring device; second positioning said source element within said holder, said positioning including positioning at least a portion of said metalized portion adjacent to at least a portion of said holder; and second bonding said holder to said metalized portion, said second bonding forming a seal against gaseous contaminants between said holder and said metalized portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radiation source assembly for use in a anesthetic gas monitoring device having a sealed environment, said radiation source assembly being positioned at least partially within said sealed environment, comprising:
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a source element for providing radiation to a detector assembly positioned within said sealed environment; a metalized portion laterally disposed about said source for providing a metallic interface on said source, said metalized portion being sealably bonded to said source to provide a continuous seal along an interface between said source and said metalized portion; and a holder laterally disposed about said metalized portion for physically supporting said metalized portion and said source within said radiation source assembly, said holder being interconnected to said metalized portion by a brazed interface layer to provide a continuous seal along an interface between said metalized portion and said holder. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification