Optical Window Assembly for Implantable Medical Device
First Claim
1. An optical window assembly for a medical device, the assembly comprising:
- a metal ferrule defining an aperture;
a spacer ring disposed within the aperture, the spacer ring coupled to the metal ferrule with a brazing material; and
an optical window coupled to the metal ferrule and the spacer ring with a bonding glass material;
the optical window having a coefficient of thermal expansion within approximately 3.0×
10−
6 inch per inch/°
C. of the coefficient of thermal expansion of the spacer ring.
1 Assignment
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Accused Products
Abstract
Embodiments of the invention are related to optical window assemblies for implantable medical devices, amongst other things. In an embodiment, the invention includes an optical window assembly for a medical device. The assembly can include a ferrule defining an aperture and a spacer ring disposed within the aperture. The assembly can also include an optical window coupled to the metal ferrule and the spacer ring. In an embodiment, the invention includes an implantable medical device including a housing and an optical window assembly coupled to the housing. In an embodiment, the invention can include a method of manufacturing a medical device. The method can include brazing a spacer ring to a metal ferrule, coupling an optical window to the spacer ring and the metal ferrule with a bonding glass material, depositing a chemical sensing element over the optical window, and coupling a porous cover layer to the spacer ring and the ferrule with an adhesive. Other embodiments are also included herein.
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Citations
20 Claims
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1. An optical window assembly for a medical device, the assembly comprising:
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a metal ferrule defining an aperture; a spacer ring disposed within the aperture, the spacer ring coupled to the metal ferrule with a brazing material; and an optical window coupled to the metal ferrule and the spacer ring with a bonding glass material;
the optical window having a coefficient of thermal expansion within approximately 3.0×
10−
6 inch per inch/°
C. of the coefficient of thermal expansion of the spacer ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An implantable medical device comprising:
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a hermetically sealed housing defining an interior volume; and an optical window assembly coupled to the housing, the assembly comprising a metal ferrule defining an aperture; a spacer ring disposed within the aperture, the spacer ring coupled to the metal ferrule with a brazing material; and an optical window coupled to the metal ferrule and the spacer ring with a bonding glass material;
the optical window having a coefficient of thermal expansion within approximately 3.0×
10−
6 inch per inch/°
C. of the coefficient of thermal expansion of the spacer ring. - View Dependent Claims (16, 17, 18)
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19. A method of manufacturing a medical device, the method comprising:
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brazing a spacer ring to a metal ferrule; coupling an optical window to the spacer ring and the metal ferrule with a bonding glass material; depositing a chemical sensing element over the optical window; and coupling a porous cover layer to the spacer ring and the ferrule with an adhesive. - View Dependent Claims (20)
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Specification