METHOD FOR SINTERING ELECTRICAL BUSHINGS
First Claim
1. A method for producing an electrical bushing for an implantable device, whereby a composite green blank is produced and sintered from an electrically insulating base body green blank and at least one electrically conductive bushing body green blank, the method comprising:
- forming the base body green blank from a ceramic slurry or a ceramic powder such as to have at least one bushing opening that extends through the base body green blank;
forming the at least one bushing body green blank from a cermet slurry, a cermet powder, a metal powder and/or a slurry made of a metal powder, whereby a shape of the at least one bushing body green blank and a shape of the at least one bushing opening are complementary to each other at least in sections thereof and prevent slippage of the bushing body green blank through the bushing opening;
inserting the at least one bushing body green blank into the at least one bushing opening of the base body green blank to form the composite green blank; and
applying at least one force to the bushing body green blank and/or the base body green blank and sintering the composite green blank while applying the at least one force, whereby the at least one force is directed in the direction of a bracketing of the at least one bushing body green blank in the at least one bushing opening of the base body green blank.
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Accused Products
Abstract
One aspect relates to a method for producing an electrical bushing for an implantable device, a corresponding electrical bushing, and a corresponding implantable device. The method according to one embodiment is characterized in that a green blank is produced and sintered from an electrically insulating base body green blank made of a ceramic slurry or powder and at least one electrically conductive bushing body green blank made of a cermet material. The at least one bushing body green blank is inserted into a bushing opening of the base body green blank to form a composite green blank, a shape of the at least one bushing body green blank and a shape of the at least one bushing opening are complementary to each other at least in sections thereof and prevent slippage of the bushing body green blank through the bushing opening. The composite green blank is sintered while applying a force that keeps the bodies together.
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Citations
16 Claims
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1. A method for producing an electrical bushing for an implantable device, whereby a composite green blank is produced and sintered from an electrically insulating base body green blank and at least one electrically conductive bushing body green blank, the method comprising:
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forming the base body green blank from a ceramic slurry or a ceramic powder such as to have at least one bushing opening that extends through the base body green blank; forming the at least one bushing body green blank from a cermet slurry, a cermet powder, a metal powder and/or a slurry made of a metal powder, whereby a shape of the at least one bushing body green blank and a shape of the at least one bushing opening are complementary to each other at least in sections thereof and prevent slippage of the bushing body green blank through the bushing opening; inserting the at least one bushing body green blank into the at least one bushing opening of the base body green blank to form the composite green blank; and applying at least one force to the bushing body green blank and/or the base body green blank and sintering the composite green blank while applying the at least one force, whereby the at least one force is directed in the direction of a bracketing of the at least one bushing body green blank in the at least one bushing opening of the base body green blank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for producing an implantable device comprising:
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forming an electrically insulating base body green blank from a ceramic slurry or a ceramic powder such as to have at least one bushing opening that extends through the base body green blank; forming at least one electrically conductive bushing body green blank from a cermet slurry, a cermet powder, a metal powder and/or a slurry made of a metal powder, whereby a shape of the at least one bushing body green blank and a shape of the at least one bushing opening are complementary to each other at least in sections thereof and prevent slippage of the bushing body green blank through the bushing opening; inserting the at least one bushing body green blank into the at least one bushing opening of the base body green blank to form a composite green blank; and applying at least one force to the bushing body green blank and/or the base body green blank and sintering the composite green blank while applying the at least one force, whereby the at least one force is directed in the direction of a bracketing of the at least one bushing body green blank in the at least one bushing opening of the base body green blank.
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10. An electrical bushing for an implantable device comprising:
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an electrically insulating base body; and at least one electrically conductive bushing body that is embedded in at least one bushing opening that extends through the base body, whereby the base body is produced from a sintered ceramic material, characterized in that the at least one bushing body is made of a sintered cermet material or a sintered metallic material, whereby the base body and the at least one bushing body comprise a firmly bonded sintered connection. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An implantable device comprising:
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an electrical bushing having an electrically insulating base body; and at least one electrically conductive bushing body that is embedded in at least one bushing opening that extends through the base body; wherein the base body is produced from a sintered ceramic material, characterized in that the at least one bushing body is made of a sintered cermet material or a sintered metallic material; and whereby the base body and the at least one bushing body comprise a firmly bonded sintered connection.
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Specification