IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0978712
(2004-10-29)
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등록번호 |
US-7682745
(2010-04-21)
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발명자
/ 주소 |
- Howard, William G.
- Schmidt, Craig L.
- Scott, Erik R.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
39 인용 특허 :
108 |
초록
▼
A medical device includes a rechargeable lithium-ion battery for providing power to the medical device. The lithium-ion battery includes a positive electrode comprising a current collector and an active material comprising a material selected from the group consisting of LiCoO2, LiMn2O4, LiNixCoyNi(
A medical device includes a rechargeable lithium-ion battery for providing power to the medical device. The lithium-ion battery includes a positive electrode comprising a current collector and an active material comprising a material selected from the group consisting of LiCoO2, LiMn2O4, LiNixCoyNi(1−x−y)O2, LiAlxCoyNi(1−x−y)O2, LiTixCoyNi(1−x−y)O2, and combinations thereof. The lithium-ion battery also includes a negative electrode having a current collector and an active material including a lithium titanate material. The current collector of the negative electrode includes a material selected from the group consisting of aluminum, titanium, and silver. The battery is configured for cycling to near-zero-voltage conditions without a substantial loss of battery capacity.
대표청구항
▼
What is claimed is: 1. A medical device comprising: a rechargeable lithium-ion battery for providing power to the medical device, the lithium-ion battery comprising: a positive electrode comprising a current collector and an active material comprising a material selected from the group consisting o
What is claimed is: 1. A medical device comprising: a rechargeable lithium-ion battery for providing power to the medical device, the lithium-ion battery comprising: a positive electrode comprising a current collector and an active material comprising a material selected from the group consisting of LiCoO2, LiMn2O4, LiNi1/3Co1/3Mn1/3O2, LiAlxCoyNi(1−x−y)O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, LiTixCoyNi(1−x−y)O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, and combinations thereof; a negative electrode comprising a foil current collector and an active material comprising a lithium titanate material, the current collector of the negative electrode comprising a material selected from the group consisting of aluminum, titanium, and combinations thereof; a liquid electrolyte; and a polymeric separator provided intermediate the positive electrode and the negative electrode that includes pores for allowing the liquid electrolyte to flow through the separator; whereby the battery is configured for cycling to near-zero-voltage conditions without a substantial loss of battery capacity. 2. The medical device of claim 1, wherein at least a portion of the medical device is configured for implantation into a body of a patient. 3. The medical device of claim 2, wherein a portion of the medical device including the lithium-ion battery is implanted within the body of the patient and wherein the lithium-ion battery may be charged without removing the lithium-ion battery from the body of the patient. 4. The medical device of claim 1, wherein the medical device comprises a neurological stimulation device. 5. The medical device of claim 4, wherein the neurological stimulation device is configured to provide a therapeutic treatment to a patient by electrically stimulating a portion of at least one of a patient's brain and a patient's spine. 6. The medical device of claim 5, wherein the neurological stimulation device is programmed to selectively provide a plurality of therapeutic treatments to a patient. 7. The medical device of claim 1, wherein the medical device is selected from the group consisting of a cardiac defibrillator, a cardiac pacemaker, a cardiac contractility module, a cardiac contractility modulator, a cardioverter, a drug administration device, a cochlear implant, a hearing aid, a sensor, a telemetry device, and a diagnostic recorder. 8. The medical device of claim 7, wherein the medical device is an implantable cardiac defibrillator for providing a therapeutic high voltage treatment to a patient. 9. The medical device of claim 8, further comprising at least one lead extending from the cardiac defibrillator and configured to electrically stimulate a portion of a patient's heart. 10. The medical device of claim 1, wherein the negative current collector comprises aluminum. 11. The medical device of claim 10, wherein the positive current collector comprises aluminum. 12. The medical device of claim 10, wherein the negative current collector comprises an aluminum alloy. 13. The medical device of claim 1, further comprising a battery case in contact with the negative electrode, the battery case comprising aluminum. 14. The medical device of claim 1, wherein the active material of the negative electrode comprises a conductive material for providing increased conductivity for the negative electrode. 15. The medical device of claim 14, wherein the conductive material comprises carbon. 16. The medical device of claim 1, wherein the lithium titanate material comprises Li4Ti5O12. 17. The medical device of claim 1, wherein the polymeric separator provided intermediate the positive electrode and the negative electrode comprises a copolymer of polypropylene and polyethylene. 18. The medical device of claim 1, wherein the battery has a capacity between approximately 10 mAh and 1000 mAh. 19. The medical device of claim 1, wherein the battery has a capacity of approximately 300 mAh. 20. A device for providing at least one of a therapeutic treatment and a diagnostic function to a patient comprising: a rechargeable battery for providing power to the device, the battery comprising: a positive electrode comprising a current collector and an active material comprising a material selected from the group consisting of LiCoO2, LiMn2O4, LiNi1/3Co1/3Mn1/3O2, LiAlxCoyNi(1−x−y)O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, LiTixCoyNi(1−x−y)O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, and combinations thereof; a negative electrode comprising a negative current collector provided as a foil and an active material provided on the negative current collector, the negative current collector comprising aluminum and the active material provided on the negative current collector comprising a lithium titanate material; a liquid electrolyte; and a separator comprising a polymeric material provided between the positive electrode and the negative electrode, the separator comprising a polyolefin laminate. 21. The device of claim 20, wherein at least a portion of the device is configured for implantation into a body of a patient. 22. The device of claim 21, wherein the device comprises a neurological stimulation device. 23. The device of claim 22, wherein the neurological stimulation device is programmed to selectively provide a plurality of therapeutic treatments to a patient. 24. The device of claim 21, wherein the device is selected from the group consisting of a cardiac defibrillator, a cardiac pacemaker, a cardioverter, a cardiac contractility modulator, a drug administration device, a cochlear implant, a hearing aid, a sensor, a telemetry device, and a diagnostic recorder. 25. The device of claim 24, wherein the device is an implantable cardiac defibrillator for providing a therapeutic high voltage treatment to a patient. 26. The device of claim 21, wherein the current collector of the positive electrode comprises aluminum. 27. The device of claim 21, wherein the negative current collector comprises an aluminum alloy. 28. The device of claim 21, further comprising a battery housing in contact with the negative electrode, the battery housing comprising aluminum. 29. The device of claim 21, wherein the active material of the negative electrode further comprises a conductive material for providing increased conductivity for the negative electrode. 30. The device of claim 29, wherein the conductive material comprises carbon. 31. The device of claim 21, wherein the lithium titanate material comprises Li4Ti5O12. 32. The device of claim 21, wherein the positive electrode and the negative electrode have a zero voltage crossing potential above the decomposition potential of the LiCoO2 active material. 33. The device of claim 32, wherein the zero voltage crossing potential is approximately 3.8 volts. 34. The device of claim 21, wherein the separator comprising a polymeric material provided between the positive electrode and the negative electrode includes micropores. 35. The device of claim 21, wherein the battery has a capacity between approximately 10 mAh and 1000 mAh. 36. The device of claim 21, wherein the battery has a capacity of approximately 75 mAh. 37. A system for providing at least one of a therapeutic treatment and a diagnostic function to a patient comprising: a lithium-ion battery configured to provide power to the system and being capable of being charged and discharged, the lithium-ion battery comprising: a positive electrode comprising an aluminum current collector and an active material provided in contact with the aluminum current collector and selected from the group consisting of LiCoO2, LiMn2O4, LiNi1/3Co1/3Mn1/3O2, LiAlxCoyNi(1−x−y)O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, LiTixCOyNi(1−x−y)O2 where x is between approximately 0.05 and 0.3 and y is between approximately 0.1 and 0.3, and combinations thereof; a negative electrode comprising an aluminum foil current collector and an active material, the active material provided on the current collector of the negative electrode comprising Li4Ti5O12; a liquid electrolyte; and a polymeric separator provided intermediate the positive electrode and the negative electrode, the polymeric separator comprising a polyolefin laminate that includes pores; wherein the positive electrode and the negative electrode have a zero voltage crossing potential above a decomposition potential of the LiCoO2 active material. 38. The system of claim 37, wherein at least a portion of the medical device is implanted into a body of a patient. 39. The system of claim 38, wherein the lithium-ion battery may be charged without removing the medical device from the body of the patient. 40. The system of claim 37, wherein the system comprises a neurological stimulation device. 41. The system of claim 37, wherein the system includes a device selected from the group consisting of a cardiac defibrillator, a cardiac pacemaker, a cardioverter, a cardiac contractility modulator, a drug administration device, a cochlear implant, a hearing aid, a sensor, a telemetry device, and a diagnostic recorder. 42. The system of claim 41, wherein the device is an implantable cardiac defibrillator for providing a therapeutic high voltage treatment to a patient. 43. The system of claim 37, wherein the positive electrode and the negative electrode have zero voltage below a corrosion potential of the aluminum current collector of the negative electrode. 44. The system of claim 37, wherein the polymeric separator provided intermediate the positive electrode and the negative electrode comprises a copolymer of polypropylene and polyethylene. 45. The system of claim 37, further comprising a battery casing in contact with the negative electrode, the battery housing comprising aluminum. 46. The system of claim 37, wherein the battery has a capacity between approximately 10 mAh and 1000 mAh.
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