IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0231555
(2005-09-20)
|
등록번호 |
US-7660616
(2010-04-02)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
25 |
초록
▼
Implantable multi-wavelength oximetry sensors, which can be used to monitor a patient's blood oxygen saturation level, are described. The sensor includes an implantable sensor housing within which are located a plurality of light sources that each transmits light of a different wavelength. Also with
Implantable multi-wavelength oximetry sensors, which can be used to monitor a patient's blood oxygen saturation level, are described. The sensor includes an implantable sensor housing within which are located a plurality of light sources that each transmits light of a different wavelength. Also within the sensor housing are one or more surfaces that are configured to combine the light from the plurality of light sources into a beam of light for transmission through a portion of the housing (e.g., a window) through which light can exit and enter the housing. Additionally, a light detector is located within the sensor housing, to detect light scattered by blood back into the housing. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.
대표청구항
▼
What is claimed is: 1. An implantable multi-wavelength oximetry sensor, comprising: an implantable sensor housing defining a window through which light can pass; a first light source, within said sensor housing, to transmit light having a first wavelength; a second light source, within said sensor
What is claimed is: 1. An implantable multi-wavelength oximetry sensor, comprising: an implantable sensor housing defining a window through which light can pass; a first light source, within said sensor housing, to transmit light having a first wavelength; a second light source, within said sensor housing, to transmit light having a second wavelength; and a plurality of prisms within said sensor housing, each prism including a plurality of surfaces; a dichroic surface formed on a first surface of one of said prisms; wherein said dichroic surface reflects light of the first wavelength and passes light of the second wavelength; wherein said first light source is mounted to a second surface of a first one of said prisms directly, or with a first lens therebetween such that said first light source is mounted to one side of said first lens and another side of said first lens is mounted to the second surface of said first one of said prisms; wherein said second light source is mounted to a second surface of a second one of said prisms directly, or with a second lens therebetween such that said second light source is mounted to one side of said second lens and another side of said second lens is mounted to the second surface of said second one of said prisms; and wherein said dichroic surface is angled relative to said first light source and said second light source such that light of the first wavelength transmitted by said first light source is reflected to travel in generally a same direction as light of the second wavelength transmitted by said second light source that passes through said dichroic surface; and wherein said surface on which said dichroic surface is formed is different than both said surface to which said first light source is mounted and said surface to which said second light source is mounted. 2. The sensor of claim 1, wherein said plurality of prisms are bonded together to form a three dimensional structure having inner surfaces where a pair of said prisms meet, and wherein said dichroic surface is formed on one of said inner surfaces. 3. The sensor of claim 2, wherein said three dimensional structure also has outer surfaces, and wherein said first and second light sources are mounted to two of said outer surfaces of said three dimensional structure. 4. The sensor of claim 2, wherein said plurality of prisms are bonded together by an optical cement or another clear epoxy. 5. The sensor of claim 3, wherein said three-dimensional structure, formed by said plurality of prisms bonded together, is cubical, rectangular or trapezoidal. 6. The sensor of claim 3, wherein light of the first wavelength that is reflected by said dichroic surface, and light of the second wavelength that passes through said dichroic surface, exit said three dimensional structure through one of said outer surfaces, which said one of said outer surfaces is concave to increase an exit angle. 7. The sensor of claim 1, wherein said window is positioned relative to said dichroic surface such that light of the first wavelength that is reflected by said dichroic surface, and light of the second wavelength that passes through said dichroic surface, exit said housing through said window. 8. The sensor of claim 7, further comprising: a light detector, within said sensor housing, to detect light of the first wavelength and light of the second wavelength scattered by blood back into said housing through said window. 9. The sensor of claim 1, wherein said implantable sensor housing is sized to fit within an implantable catheter or cardiac lead. 10. The sensor of claim 9, wherein said housing includes: a tube within which said first and second light sources and said prisms are located; and a first end cap to enclose a first end of said tube; and a second end cap to enclose a second end of said tube. 11. The sensor of claim 1, further comprising: a third light source, within said sensor housing, to transmit light having a third wavelength; and a second dichroic surface, formed on one of said prisms within said sensor housing, that reflects light having the third wavelength, passes light of the first wavelength, and passes light of the second wavelength; wherein said second dichroic surface is angled relative to said first, second and third light sources and said first dichroic surface such that light of the third wavelength transmitted by said third light source is reflected to travel in generally a same direction as light of the first wavelength reflected by said first dichroic surface and light of the second wavelength that passes through said first dichroic surface and said second dichroic surface. 12. An implantable multi-wavelength oximetry sensor, comprising: an implantable sensor housing including a window through which light can pass; a first light source, within said sensor housing, to transmit light having a first wavelength; a second light source, within said sensor housing, to transmit light having a second wavelength; a plurality of prisms within said sensor housing; a first dichroic surface, formed on a surface of a first one of said prisms within said sensor housing, that reflects light of the first wavelength and passes light of the second wavelength; a second dichroic surface, formed on a surface of a second one of said prisms within said sensor housing, that reflects light of the second wavelength and passes light of the first wavelength; wherein said plurality of prisms are bonded together to form a three dimensional structure having inner surfaces where pairs of said prisms meet; wherein said first dichroic surface is formed on one of said inner surfaces and said second dichroic surface is formed on another one of said inner surfaces; wherein said three dimensional structure also has outer surfaces; wherein said first light source is mounted to a said outer surface directly, or with a first lens therebetween; and wherein said second light source is mounted to another said outer surface directly, or with a second lens therebetween; and wherein said first and second dichroic surfaces are angled relative to said first and second light sources such that light of the first wavelength transmitted by said first light source is reflected by said first dichroic surface to travel in generally a same direction as light of the second wavelength transmitted by said second light source that is reflected by said second dichroic surface. 13. The sensor of claim 12, wherein said three-dimensional structure is cubical, rectangular or trapezoidal. 14. The sensor of claim 12, wherein light of the first wavelength that is reflected by said first dichroic surface, and light of the second wavelength that is reflected by said second dichroic surface, exit said three dimensional structure through one of said outer surfaces, which said one of said outer surfaces is concave to increase an exit angle. 15. The sensor of claim 12, wherein said window is positioned relative to said first and second dichroic surfaces such that light of the first wavelength that is reflected by said first dichroic surface, and light of the second wavelength that is reflected by said second dichroic surface, exit said housing through said window. 16. The sensor of claim 15, further comprising: a light detector, within said sensor housing, to detect light of the first wavelength and light of the second wavelength scattered by blood back into said housing through said window. 17. The sensor of claim 12, further comprising: a third light source, within said sensor housing, to transmit light having a third wavelength; and wherein said first and second dichroic surfaces pass light of the third wavelength; and wherein light of the third wavelength transmitted by said third light source, which passes through said first and second dichroic surfaces, travels is generally a same direction as light of the first wavelength reflected by said first dichroic surface and light of the second wavelength reflected by said second dichroic surface. 18. An implantable apparatus, comprising: an elongated flexible body configured to be implanted in a blood vessel or a chamber of a heart; an implantable sensor within said elongated flexible body, said implantable sensor including a sensor housing and a window through which light can enter and exit said sensor housing; a plurality of prisms, within said sensor housing, said prisms bonded together to form a three dimensional structure; a plurality of light sources mounted to said three dimensional structure, within said sensor housing, each of which transmits light of a different wavelength; and one or more inner surfaces of said three dimensional structure, within said sensor housing, configured to combine the light from said plurality of light sources into a beam of light for transmission through said window of said sensor housing. 19. The apparatus of claim 18, wherein said elongated flexible body includes a portion through which light can exit and enter said flexible body. 20. The apparatus of claim 18, wherein said one or more inner surfaces comprise one or more dichroic surfaces. 21. The apparatus of claim 20, wherein each said dichroic surface is formed on a said prism. 22. The apparatus of claim 18, wherein at least one of said one or more surfaces relies on critical angle reflection to reflect light from one of said plurality of light sources. 23. The apparatus of claim 18, further comprising: a light detector, within said sensor housing, to detect light scattered by blood back into said housing through said window of said sensor housing. 24. The sensor of claim 18, wherein said plurality of prisms are bonded together by an optical cement or another clear epoxy. 25. The apparatus of claim 18, wherein one or more of said plurality of light sources are mounted directly to said three dimensional structure. 26. The apparatus of claim 18, wherein one or more of said plurality of light sources are mounted to said three dimensional structure with a lens therebetween. 27. The apparatus of claim 18, wherein said three-dimensional structure, formed by said plurality of prisms bonded together, is cubical, rectangular or trapezoidal.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.