Laser welding a feedthrough
First Claim
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1. A method of coupling an insulator to a surrounding ferrule in an implantable medical device comprising:
- providing an electrical insulator having a plurality of conducting elements extending therethrough;
placing the insulator with conducting elements within a ferrule having a shape surrounding the insulator along an interface;
heating the insulator with energy from a first laser until raising the temperature of the insulator to a first temperature level; and
welding the ferrule to the insulator along the interface with energy from a second laser once the insulator has reached the first temperature.
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Abstract
One aspect is a method of coupling an insulator to a surrounding ferrule in an implantable medical device. An insulator is provided having a plurality of conducting elements extending therethrough. The insulator is placed with conducting elements within a ferrule having a frame-like shape surrounding the insulator along an interface. The insulator is heated with a first laser until raising the temperature of insulator to a first temperature level. The ferrule is welded to the insulator along the interface with a second laser once the insulator has reached the first temperature.
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Citations
14 Claims
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1. A method of coupling an insulator to a surrounding ferrule in an implantable medical device comprising:
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providing an electrical insulator having a plurality of conducting elements extending therethrough; placing the insulator with conducting elements within a ferrule having a shape surrounding the insulator along an interface; heating the insulator with energy from a first laser until raising the temperature of the insulator to a first temperature level; and welding the ferrule to the insulator along the interface with energy from a second laser once the insulator has reached the first temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of welding an insulator in an implantable medical device comprising:
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providing an electrical insulator having a plurality of conducting elements extending therethrough; placing the insulator with conducting elements within a metallic case surrounding the insulator at an interface; heating the insulator with energy from a first laser until raising the temperature of the insulator to a first temperature level; and welding the case to the insulator with energy from a second laser once the insulator has reached the first temperature. - View Dependent Claims (11, 12, 13, 14)
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Specification