High reliability wire welding for implantable devices
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61N-001/00
B23K-011/00
B23K-026/22
A61N-001/375
B23K-011/11
B23K-028/02
출원번호
US-0270115
(2014-05-05)
등록번호
US-9221119
(2015-12-29)
발명자
/ 주소
Schmidt, Siegmar
출원인 / 주소
ALFRED E. MANN FOUNDATION FOR SCIENTIFIC RESEARCH
대리인 / 주소
Kilpatrick Townsend & Stockton LLP
인용정보
피인용 횟수 :
0인용 특허 :
138
초록▼
Methods of making an implantable pulse generator are disclosed herein. The implantable pulse generator can include a body defining an internal volume and a plurality of wires extending from out of the internal volume of the body. Some of these wires can be connected, either directly or indirectly to
Methods of making an implantable pulse generator are disclosed herein. The implantable pulse generator can include a body defining an internal volume and a plurality of wires extending from out of the internal volume of the body. Some of these wires can be connected, either directly or indirectly to a lead via a welded joint. The welded joint can be created by first resistance welding and then laser welding some of the wires to a connector.
대표청구항▼
1. A method of connecting leads to an implantable pulse generator, wherein the implantable pulse generator comprises: a biocompatible housing; a plurality of biocompatible wires extending from the biocompatible housing, wherein each of the biocompatible wires comprises a longitudinal axis; and a fee
1. A method of connecting leads to an implantable pulse generator, wherein the implantable pulse generator comprises: a biocompatible housing; a plurality of biocompatible wires extending from the biocompatible housing, wherein each of the biocompatible wires comprises a longitudinal axis; and a feedthrough, wherein the feedthrough and the biocompatible housing together define a sealed volume, and wherein the biocompatible wires extend through the feedthrough; positioning one of the biocompatible wires and a connecting piece such that the one of the biocompatible wires and the connecting piece contact;resistance welding one of the biocompatible wires and the connecting piece together; andenergy beam welding the one of the biocompatible wires and the connecting piece together. 2. The method of claim 1, wherein the one of the biocompatible wires and the connecting pieces are positioned to create a lap-joint. 3. The method of claim 1, wherein energy beam welding comprises laser welding. 4. The method of claim 1, wherein energy beam welding the biocompatible wire comprises: aiming an energy beam at an edge of the one of the biocompatible wires such that a portion of the energy beam is tangent to the edge; andwelding the edge of the one of the biocompatible wires to the connecting piece. 5. The method of claim 4, wherein the heat affected zone created by welding the edge of the one of the biocompatible wires to the connecting piece extends from the edge of the one of the biocompatible wires. 6. The method of claim 5, wherein the heat affected zone created by welding the edge of the one of the biocompatible wires to the connecting pieces extends to a second edge of the one of the biocompatible wires. 7. The method of claim 1, further comprising enclosing the welds of the one of the biocompatible wires and the connecting piece in a non-conductive material. 8. The method of claim 7, wherein the non-conductive material comprises a reacted resin. 9. The method of claim 1, wherein the connecting piece comprises a second biocompatible wire comprising a longitudinal axis. 10. The method of claim 9, wherein the positioning the one of the biocompatible wires and the connecting piece comprising the second biocompatible wire comprises overlapping a portion of both the one of the biocompatible wires and the second biocompatible wire such that the longitudinal axes of the biocompatible wire and the second biocompatible wire are non-parallel. 11. The method of claim 10, wherein an angle between the longitudinal axes of the biocompatible wire and the second biocompatible wire is between 30 and 150 degrees. 12. The method of claim 1, wherein the connecting piece comprises at least one connector. 13. The method of claim 1, wherein the connecting piece comprises a first connector and a second connector, wherein a first group of the biocompatible wires connect to the first connector and a second group of biocompatible wires extend past the first connector and connect to the second connector. 14. The method of claim 13, further comprising creating an insulative barrier between the second group of wires and the first connector before welding the second group of wires to the second connector. 15. The method of claim 1, wherein resistance welding comprises contacting at least one of the biocompatible wires and the connecting piece with at least one electrode of a resistance welder. 16. The method of claim 1, wherein the wires comprise a diameter between 0.05 mm and 0.5 mm. 17. An implantable pulse generator comprising: a biocompatible housing;a plurality of biocompatible wires extending from the biocompatible housing, wherein each of the biocompatible wires comprises a longitudinal axis;a feedthrough, wherein the feedthrough and the biocompatible housing together define a sealed volume, and wherein the biocompatible wires extend through the feedthrough;and a conductive connecting piece welded to one of the biocompatible wires, wherein the conductive connecting piece is joined to one of the biocompatible wires at a joint via a first weld and a second weld, wherein the second weld is offset from the longitudinal axis of the one of the biocompatible wire or at the end of the biocompatible wire. 18. The implantable pulse generator of claim 17, wherein the plurality of biocompatible wires comprise a platinum-iridium alloy. 19. The implantable pulse generator of claim 17, wherein the joint of the one of the biocompatible wires and the conductive connecting piece comprises a lap joint. 20. The implantable pulse generator of claim 17, further comprising a cap enclosing the biocompatible wires and the joint of the one of the biocompatible wires and the connecting piece. 21. The implantable pulse generator of claim 20, wherein the cap is non-conductive. 22. The implantable pulse generator of claim 20, wherein the cap is permeable to body fluids. 23. The implantable pulse generator of claim 20, wherein the cap comprises a reacted resin. 24. The implantable pulse generator of claim 17, wherein the connecting piece comprises a second biocompatible wire having a longitudinal axis. 25. The implantable pulse generator of claim 24, wherein at the first weld of the joint, the longitudinal axis of the one of the biocompatible wires is non-parallel with the longitudinal axis of the second biocompatible wire. 26. The implantable pulse generator of claim 17, wherein the connecting piece comprises at least one connector. 27. The implantable pulse generator of claim 17, wherein the connecting piece comprises a first connector and a second connector, wherein a first group of the biocompatible wires connect to the first connector and a second group of biocompatible wires extend past the first connector and connect to the second connector. 28. A method of connecting leads to an implantable pulse generator, wherein the implantable pulse generator comprises: a biocompatible housing; an array of biocompatible wires extending from the biocompatible housing, wherein each of the biocompatible wires comprises a longitudinal axis; and a feedthrough, wherein the feedthrough and the biocompatible housing together define a sealed volume, and wherein the biocompatible wires extend through the feedthrough; resistance welding each of the biocompatible wires of the array of biocompatible wires to a connecting piece; andenergy beam welding each of the biocompatible wires of the array of biocompatible wires to the connecting piece. 29. The method of claim 28, wherein the connecting piece comprises a plurality of second wires, and wherein each of the biocompatible wires of the array of biocompatible wires is connected to a unique one of the second wires. 30. The method of claim 28, wherein the connecting piece comprises a connector having a plurality of contacts, and wherein each of the biocompatible wires of the array of biocompatible wires is connected to a unique one of the plurality of contacts. 31. The method of claim 28, wherein resistance welding comprises contacting at least one of the biocompatible wires and connecting piece with at least one electrode of a resistance welder. 32. The method of claim 28, wherein the wires comprise a diameter between 0.05 mm and 0.5 mm.
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