One aspect relates to a method for producing an electrical bushing for an implantable medical device. The method includes forming a holding element for holding the electrical bushing in the implantable medical device, the holding element including a through-opening. An insulation element of aluminum oxide is formed within the through-opening. At least one elongated conduction element is formed extending through insulation element. The at least one elongated conduction element includes an aluminum oxide in a metallic matrix. The insulation element and the at least one elongated conduction element are jointly fired thereby forming a hermetic seal therebetween without welding or soldering.

A bushing for switchgear is composed of an outer metal ring, a current-conducting element and a disk-shaped ceramic insulating element which can be mounted in a floating manner in the outer metal ring. There is also described a switchgear with such a bushing.

A bushing for switchgear is composed of an outer metal ring, a current-conducting element and a disk-shaped ceramic insulating element which can be mounted in a floating manner in the outer metal ring. There is also described a switchgear with such a bushing.

The invention relates to an assembly for a cable passthrough in a wall, with a cable feedthrough (1; 20) including: a sealing section (2) made from a soft plastic component, the sealing section (2) having an opening (4) extending in the lengthwise direction for sealing accommodation of a cable that is to be passed through a housing wall; a strain relief (3) made from a hard plastic component, which is formed integrally onto the sealing section (2) and has a passthrough (5) in the lengthwise direction for the cable that is to be passed through, which passthrough (5) is aligned with the opening (4); and a slotting arrangement (6) which extends over the sealing section (2) and the strain relief (3) in the lengthwise direction of the cable feedthrough (1; 20) and through which the cable to be passed through can be introduced into the opening (4) and the passthrough (5) from the outside from a direction transverse to the lengthwise direction.

The invention relates to an assembly for a cable passthrough in a wall, with a cable feedthrough (1; 20) including: a sealing section (2) made from a soft plastic component, the sealing section (2) having an opening (4) extending in the lengthwise direction for sealing accommodation of a cable that is to be passed through a housing wall; a strain relief (3) made from a hard plastic component, which is formed integrally onto the sealing section (2) and has a passthrough (5) in the lengthwise direction for the cable that is to be passed through, which passthrough (5) is aligned with the opening (4); and a slotting arrangement (6) which extends over the sealing section (2) and the strain relief (3) in the lengthwise direction of the cable feedthrough (1; 20) and through which the cable to be passed through can be introduced into the opening (4) and the passthrough (5) from the outside from a direction transverse to the lengthwise direction.

A polymer bushing includes: an inner conductor; a hard insulating tube; a shielding metal fitting; a polymer covering that includes a body part that covers an outer periphery of the insulating tube, and a plurality of umbrella-shaped sheds that are formed at an outer periphery of the body part; and an electric-field stress-control layer that is composed of a zinc oxide layer or a high-permittivity layer, and is disposed along an interface between the insulating tube and the polymer covering. A rear end part of the electric-field stress-control layer is connected to the shielding metal fitting. The body part includes a first body part that has a uniform thickness, and a second body part that is located in a region around a front end part of the electric-field stress-control layer and has a thickness greater than the thickness of the first body part.

A feedthrough subassembly is attachable to an active implantable medical device. A via hole is disposed through an electrically insulative and biocompatible feedthrough body extending from a body fluid side to a device side. A composite fill partially disposed within the via hole extends between a first and a second composite fill end. The first composite fill end is disposed at or near the device side of the feedthrough body. The second composite fill end is disposed within the via hole recessed from the body fluid side. The composite fill includes a first portion of a ceramic reinforced metal composite including alumina and platinum and a second portion of a substantially pure platinum fill and/or a platinum wire. A via hole metallization covers a portion of the second composite fill end. A metallic leadwire is at least partially disposed within the via hole and gold brazed via hole metallization.

An electrical feed-through apparatus is prevents or substantially reduces partial corona discharges in penetrators for high voltage supply for underwater facilities. A flange of a first thickness has an opening providing a passage between first and second oppositely located sides of the flange. An elongated tube of a solid, electrically insulating material has a first length greater than the first thickness, and is positioned in the passage, with first and second parts of the tube protruding from the first and second sides of the flange, respectively. First and second attachment sleeves are positioned on the tube and are attached to the first and second parts of the tube, respectively, at a distance from respective first and second ends of the tube. The sleeves are attached to the respective first and second oppositely located sides of the flange.

An electrical feed-through apparatus is prevents or substantially reduces partial corona discharges in penetrators for high voltage supply for underwater facilities. A flange of a first thickness has an opening providing a passage between first and second oppositely located sides of the flange. An elongated tube of a solid, electrically insulating material has a first length greater than the first thickness, and is positioned in the passage, with first and second parts of the tube protruding from the first and second sides of the flange, respectively. First and second attachment sleeves are positioned on the tube and are attached to the first and second parts of the tube, respectively, at a distance from respective first and second ends of the tube. The sleeves are attached to the respective first and second oppositely located sides of the flange.

A method of manufacturing a feedthrough dielectric body for an active implantable medical device includes the steps of: a) forming an alumina ceramic body in a green state, or, stacking upon one another discrete layers of alumina ceramic in a green state and pressing; b) forming at least one via hole straight through the alumina ceramic body; c) filling the at least one via hole with a ceramic reinforced metal composite paste; d) drying the alumina ceramic body and the ceramic reinforced metal composite paste; e) forming a second hole straight through the ceramic reinforced metal composite paste being smaller in diameter in comparison to the at least one via hole; f) filling the second hole with a substantially pure metal paste; g) sintering the alumina ceramic body, the ceramic reinforced metal composite paste and the metal paste; and h) hermetically sealing the feedthrough dielectric body to a ferrule.