# US 2026/0083373 A1 · Method for producing a bi- or multipolar lead > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0083373 A1 - Document ID: US20260083373A1 - Status: Published application - Kind: A1 - Application number: 19/332,306 - Filed: 2025-09-18 - Published: 2026-03-26 - Earliest claimed: 2024-09-23 - Assignees: Heraeus Medevio GmbH & Co. KG - Applicants: Heraeus Medevio GmbH & Co. KG - Inventors: Leoni WILHELM; Ilias NIKOLAIDIS - Web page: https://patentgrep.com/patent/US20260083373A1 ## CPC - A61B 5/273: Connection of cords, cables or leads to electrodes - A61B 2562/125: characterised by the manufacture of electrodes - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A method for producing a bi- or multipolar lead for a medical device, comprising the method steps of providing a cable comprising an outer insulation, an inner lumen, wherein the inner lumen is arranged coaxially with respect to the outer insulation and extends in a longitudinal direction from a proximal end to a distal end of the cable, and at least one electrically conductive channel, wherein the at least one electrically conductive channel is arranged between the outer insulation and the inner lumen of the cable, and wherein the at least one electrically conductive channel is formed by at least one insulated conductor which comprises an electrical conductor and an insulating layer. ## Claims ### Claim 1 A method for producing a bi- or multipolar lead for a medical device, comprising the method steps of: a) providing a cable, comprising an outer insulation, an inner lumen, wherein the inner lumen is arranged coaxially with respect to the outer insulation and extends in a longitudinal direction from a proximal end to a distal end of the cable, and at least one electrically conductive channel, wherein the at least one electrically conductive channel is arranged between the outer insulation and the inner lumen of the cable, and, wherein the at least one electrically conductive channel is formed by at least one insulated conductor which comprises an electrical conductor and an insulating layer; b) providing at least one conductive paste; c) creating at least one contact opening in the proximity of the distal end of the cable, wherein, in order to create the contact opening, parts of the outer insulation are removed and parts of the insulating layer of at least one of the electrically conductive channels are removed so that the at least one electrically conductive channel can be selectively electrically contacted via the contact opening, wherein the contact opening comprises a contact opening cross-sectional area; d) filling the contact opening with the conductive paste, wherein a filled conductive paste volume of the conductive paste comprises 105% to 200% of a capacity volume of the contact opening in order to create a projection of the conductive paste protruding from the contact opening; e) providing at least one electrode, wherein the electrode comprises a contact surface with a contact cross-sectional area, wherein the contact cross-sectional area is larger than the contact opening cross-sectional area; f) positioning the electrode at the position of the contact opening, wherein the contact surface is oriented in the direction of the contact opening; g) moving the positioned electrode in the direction of the contact opening so that the projection of the conductive paste is introduced during the movement between the outer insulation and a part of the contact surface which projects beyond the contact opening; h) curing the conductive paste to fix the electrode in an electrically conductive manner to the electrically conductive channel. ### Claim 2 (depends on 1) The method according to claim 1, wherein the conductive paste comprises a conductive paste composition which contains a proportion of a maximum of 5 percent by weight of volatile organic substances, based on the total mass of the conductive paste composition. ### Claim 3 (depends on 2) The method according to claim 2, wherein the volatile organic substances are selected from the group consisting of organic solvents. ### Claim 4 (depends on 2) The method according to claim 2, wherein the conductive paste composition contains a proportion of at least 0.5 percent by weight of volatile organic substances, based on the total mass of the conductive paste composition. ### Claim 5 (depends on 2) The method according to claim 2, wherein the conductive paste composition contains a proportion of 70-90 percent by weight of conductive particles. ### Claim 6 (depends on 5) The method according to claim 5, wherein the conductive particles are metal particles. ### Claim 7 (depends on 6) The method according to claim 6, wherein the metal particles comprise a metal which is selected from the group consisting of platinum, iridium, tantalum, palladium, titanium, iron, gold, molybdenum, niobium, tungsten, nickel, chromium, cobalt, stainless steel, nitinol, alloys of any of these metals, and composites of any of these metals. ### Claim 8 (depends on 2) The method according to claim 2, wherein the conductive paste composition comprises a polymer which is selected from the group consisting of polyimides and polyurethanes. ### Claim 9 (depends on 1) The method according to claim 1, wherein the projection in the radial direction has a height in a range of 0.1 mm to 0.5 mm. ### Claim 10 (depends on 1) The method according to claim 1, wherein the curing in method step h) causes a radial contraction of the conductive paste which corresponds to a maximum of 5% of a radial height of the contact opening. ### Claim 11 (depends on 1) The method according to claim 1, wherein the electrode is a ring electrode. ### Claim 12 (depends on 11) The method according to claim 11, wherein the movement in method step g) comprises a radial compression of the ring electrode. ### Claim 13 (depends on 11) The method according to claim 11, wherein the positioning in method step f) comprises drawing the ring electrode onto the cable. ### Claim 14 (depends on 11) The method according to any of claim 11, wherein the contact surface is a radially inner ring inner surface of the ring electrode. ### Claim 15 (depends on 1) The method according to claim 1, wherein the curing in method step h) is carried out at a temperature which lies in a range between 110° C. and 140° C. ### Claim 16 (depends on 3) The method according to claim 3, wherein the conductive paste composition contains a proportion of at least 0.5 percent by weight of volatile organic substances, based on the total mass of the conductive paste composition. ### Claim 17 (depends on 3) The method according to claim 3, wherein the conductive paste composition contains a proportion of 70-90 percent by weight of conductive particles. ### Claim 18 (depends on 4) The method according to claim 4, wherein the conductive paste composition contains a proportion of 70-90 percent by weight of conductive particles. ### Claim 19 (depends on 12) The method according to claim 12, wherein the positioning in method step f) comprises drawing the ring electrode onto the cable.