IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0397774
(2009-03-04)
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등록번호 |
US-8112152
(2012-02-07)
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발명자
/ 주소 |
- Taylor, William J.
- Seifried, Lynn M.
- Wolf, William D.
- Ries, Andrew J.
- Kast, John E.
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출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
68 |
초록
▼
Methods and apparatuses are provided for an electrical device that employs a feedthrough including a hermetic seal that seals an interior region of the electrical device. The electrical device includes an electrical contact disposed within the interior region of the electrical device, and a wire ter
Methods and apparatuses are provided for an electrical device that employs a feedthrough including a hermetic seal that seals an interior region of the electrical device. The electrical device includes an electrical contact disposed within the interior region of the electrical device, and a wire terminal that includes an encircled portion that is encircled by the feedthrough, and a first end that electrically connects with said electrical contact. When the electrical device is constructed, the first end of the wire terminal is coated with a conductive metal that is more resistant to oxidation than the wire terminal. The first end of the wire terminal is secured to the electrical contact using a mechanical device such as a crimping connector or a spring connector.
대표청구항
▼
1. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating
1. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through and sealed to the insulating material and having a proximal portion disposed outside of the container and a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising a refractory metal is located between the inner core and the oxide resistant cladding; anda connection between the distal portion of the terminal conductor and the electrical device enclosed in the container. 2. A medical device according to claim 1, wherein the oxide resistant cladding comprises a noble metal or a noble metal alloy. 3. A medical device according to claim 1, wherein the oxide resistant cladding comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 4. A medical device according to claim 1, wherein the oxide-resistant cladding comprises platinum. 5. A medical device according to claim 1, wherein the oxide-resistant cladding comprises platinum iridium alloy. 6. A medical device according to claim 1, wherein the connection between the distal portion of the terminal conductor and the electrical device enclosed in the container comprises a heat joined connection. 7. A medical device according to claim 6, wherein the heat joined connection comprises a weld. 8. A medical device according to claim 1, wherein the inner core comprises tantalum or niobium, and wherein the oxide-resistant cladding comprises a platinum or platinum-iridium alloy cladding. 9. A feedthrough for use in an implantable medical device of the type having a hermetically-sealed container containing an electrical device, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through the insulating material and having a proximal portion disposed outside of the container and a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising a refractory metal is located between the inner core and the oxide resistant cladding. 10. The feedthrough of claim 9, wherein the inner core comprises tantalum, a tantalum alloy, niobium, or a niobium alloy. 11. The feedthrough of claim 10, wherein the oxide-resistant cladding comprises platinum or platinum-iridium. 12. The feedthrough of claim 9, further comprising a capacitive structure disposed within a portion of the ferrule, the capacitive structure being operatively coupled to the terminal conductor. 13. The feedthrough of claim 9, wherein the oxide resistant cladding is not located between the capacitive structure and the inner core of the terminal conductor. 14. The feedthrough of claim 9, wherein the oxide resistant cladding is not located between at least a portion of the insulating material and the inner core of the terminal conductor. 15. The feedthrough of claim 9, wherein the oxide resistant cladding comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 16. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through and sealed to the insulating material and having a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising a refractory metal is located between the inner core and the oxide resistant cladding, and further wherein the oxide resistant coating is selected from the group consisting of a cladding, a paint, a vacuum deposited layer, a chemical vapor deposited layer, and a sputter deposited layer. 17. A medical device according to claim 16, wherein the oxide resistant coating comprises a noble metal or a noble metal alloy. 18. A medical device according to claim 16, wherein the oxide resistant coating comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 19. A medical device according to claim 16, wherein the oxide-resistant coating comprises platinum. 20. A medical device according to claim 16, wherein the oxide-resistant coating comprises platinum iridium alloy. 21. A medical device according to claim 16, wherein the connection between the distal portion of the terminal conductor and the electrical device enclosed in the container comprises a heat joined connection. 22. A medical device according to claim 21, wherein the heat joined connection comprises a weld. 23. A medical device according to claim 16, wherein the inner core comprises tantalum or niobium, and wherein the oxide-resistant coating comprises a platinum or platinum-iridium alloy cladding. 24. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through and sealed to the insulating material and having a proximal portion disposed outside of the container and a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising a film comprising titanium is located between the inner core and the oxide resistant cladding; anda connection between the distal portion of the terminal conductor and the electrical device enclosed in the container. 25. A medical device according to claim 24, wherein the oxide resistant cladding comprises a noble metal or a noble metal alloy. 26. A medical device according to claim 24, wherein the oxide resistant cladding comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 27. A medical device according to claim 24, wherein the oxide-resistant cladding comprises platinum. 28. A medical device according to claim 24, wherein the oxide-resistant cladding comprises platinum iridium alloy. 29. A medical device according to claim 24, wherein the connection between the distal portion of the terminal conductor and the electrical device enclosed in the container comprises a heat joined connection. 30. A medical device according to claim 29, wherein the heat joined connection comprises a weld. 31. A medical device according to claim 24, wherein the inner core comprises tantalum or niobium, and wherein the oxide-resistant cladding comprises a platinum or platinum-iridium alloy cladding. 32. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through and sealed to the insulating material and having a proximal portion disposed outside of the container and a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising a film comprising niobium is located between the inner core and the oxide resistant cladding; anda connection between the distal portion of the terminal conductor and the electrical device enclosed in the container. 33. A medical device according to claim 32, wherein the oxide resistant cladding comprises a noble metal or a noble metal alloy. 34. A medical device according to claim 32, wherein the oxide resistant cladding comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 35. A medical device according to claim 32, wherein the oxide-resistant cladding comprises platinum. 36. A medical device according to claim 32, wherein the oxide-resistant cladding comprises platinum iridium alloy. 37. A medical device according to claim 32, wherein the connection between the distal portion of the terminal conductor and the electrical device enclosed in the container comprises a heat joined connection. 38. A medical device according to claim 37, wherein the heat joined connection comprises a weld. 39. A medical device according to claim 32, wherein the inner core comprises tantalum or niobium, and wherein the oxide-resistant cladding comprises a platinum or platinum-iridium alloy cladding. 40. A feedthrough for use in an implantable medical device of the type having a hermetically-sealed container containing an electrical device, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through the insulating material and having a proximal portion disposed outside of the container and a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising titanium is located between the inner core and the oxide-resistant cladding. 41. The feedthrough of claim 40, wherein the inner core comprises tantalum, a tantalum alloy, niobium, or a niobium alloy. 42. The feedthrough of claim 41, wherein the oxide-resistant cladding comprises platinum or platinum-iridium. 43. The feedthrough of claim 40, further comprising a capacitive structure disposed within a portion of the ferrule, the capacitive structure being operatively coupled to the terminal conductor. 44. The feedthrough of claim 40, wherein the oxide resistant cladding is not located between the capacitive structure and the inner core of the terminal conductor. 45. The feedthrough of claim 40, wherein the oxide resistant cladding is not located between at least a portion of the insulating material and the inner core of the terminal conductor. 46. The feedthrough of claim 40, wherein the oxide resistant cladding comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 47. A feedthrough for use in an implantable medical device of the type having a hermetically-sealed container containing an electrical device, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through the insulating material and having a proximal portion disposed outside of the container and a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant cladding on the inner core, wherein an intermediate layer comprising niobium is located between the inner core and the oxide resistant cladding. 48. The feedthrough of claim 47, wherein the inner core comprises tantalum, a tantalum alloy, niobium, or a niobium alloy. 49. The feedthrough of claim 48, wherein the oxide-resistant cladding comprises platinum or platinum-iridium. 50. The feedthrough of claim 47, further comprising a capacitive structure disposed within a portion of the ferrule, the capacitive structure being operatively coupled to the terminal conductor. 51. The feedthrough of claim 47, wherein the oxide resistant cladding is not located between the capacitive structure and the inner core of the terminal conductor. 52. The feedthrough of claim 47, wherein the oxide resistant cladding is not located between at least a portion of the insulating material and the inner core of the terminal conductor. 53. The feedthrough of claim 47, wherein the oxide resistant cladding comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 54. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through and sealed to the insulating material and having a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant coating on the inner core, wherein an intermediate layer comprising a film comprising titanium is located between the inner core and the oxide resistant coating, and further wherein the oxide resistant coating is selected from the group consisting of a cladding, a paint, a vacuum deposited layer, a chemical vapor deposited layer, and a sputter deposited layer. 55. A medical device according to claim 54, wherein the oxide resistant coating comprises a noble metal or a noble metal alloy. 56. A medical device according to claim 54, wherein the oxide resistant coating comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 57. A medical device according to claim 54, wherein the oxide-resistant coating comprises platinum. 58. A medical device according to claim 54, wherein the oxide-resistant coating comprises platinum iridium alloy. 59. A medical device according to claim 54, wherein the connection between the distal portion of the terminal conductor and the electrical device enclosed in the container comprises a heat joined connection. 60. A medical device according to claim 59, wherein the heat joined connection comprises a weld. 61. A medical device according to claim 54, wherein the inner core comprises tantalum or niobium, and wherein the oxide-resistant coating comprises a platinum or platinum-iridium alloy cladding. 62. An implantable medical device for delivering a therapy, the device comprising: a hermetically-sealed container enclosing an electrical device;a feedthrough coupled to the container, the feedthrough comprising: a generally annular ferrule adapted to mate with an opening in the container;insulating material disposed within and coupled to the ferrule; anda terminal conductor extending through and sealed to the insulating material and having a distal portion disposed within the container, the terminal conductor comprising an inner core and an oxide-resistant coating on the inner core, wherein an intermediate layer comprising a film comprising niobium is located between the inner core and the oxide resistant coating, and further wherein the oxide resistant coating is selected from the group consisting of a cladding, a paint, a vacuum deposited layer, a chemical vapor deposited layer, and a sputter deposited layer. 63. A medical device according to claim 62, wherein the oxide resistant coating comprises a noble metal or a noble metal alloy. 64. A medical device according to claim 62, wherein the oxide resistant coating comprises a conductive metal selected from the group consisting of gold, platinum, palladium, rhodium, ruthenium, iridium and alloys thereof. 65. A medical device according to claim 62, wherein the oxide-resistant coating comprises platinum. 66. A medical device according to claim 62, wherein the oxide-resistant coating comprises platinum iridium alloy. 67. A medical device according to claim 62, wherein the connection between the distal portion of the terminal conductor and the electrical device enclosed in the container comprises a heat joined connection. 68. A medical device according to claim 67, wherein the heat joined connection comprises a weld. 69. A medical device according to claim 62, wherein the inner core comprises tantalum or niobium, and wherein the oxide-resistant coating comprises a platinum or platinum-iridium alloy cladding.
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