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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0291969 (2002-11-11) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 462 인용 특허 : 219 |
An electrochemical analyte sensor formed using conductive traces on a substrate can be used for determining and/or monitoring a level of analyte in in vitro or in vivo analyte-containing fluids. For example, an implantable sensor may be used for the continuous or automatic monitoring of a level of a
An electrochemical analyte sensor formed using conductive traces on a substrate can be used for determining and/or monitoring a level of analyte in in vitro or in vivo analyte-containing fluids. For example, an implantable sensor may be used for the continuous or automatic monitoring of a level of an analyte, such as glucose, lactate, or oxygen, in a patient. The electrochemical analyte sensor includes a substrate and conductive material disposed on the substrate, the conductive material forming a working electrode. In some sensors, the conductive material is disposed in recessed channels formed in a surface of the sensor. An electron transfer agent and/or catalyst may be provided to facilitate the electrolysis of the analyte or of a second compound whose level depends on the level of the analyte. A potential is formed between the working electrode and a reference electrode or counter/reference electrode and the resulting current is a function of the concentration of the analyte in the body fluid.
We claim: 1. A transcutaneous electrochemical sensor comprising: a substrate having a proximal end portion having a width defined by a first side and a second side, and a distal end portion having a width defined by a third side and a fourth side, the width being less than the width of the proximal
We claim: 1. A transcutaneous electrochemical sensor comprising: a substrate having a proximal end portion having a width defined by a first side and a second side, and a distal end portion having a width defined by a third side and a fourth side, the width being less than the width of the proximal end portion, the distal end portion of the distal end portion being adjacent to the proximal end portion and extending therefrom; at least one contact pad located on the proximal end portion; and at least one conductive trace located on the distal end portion and the proximal end portion such that the at least one conductive trace electrically communicates with the at least one contact pad, wherein the first side and third side together form a continuous straight edge, and wherein the second side and the fourth side do not form a continuous straight edge. 2. The sensor of claim 1 having a length between the proximal end portion and the distal end portion of 0.3 to 5 cm. 3. The sensor of claim 1, wherein the distal end portion has a length of 0.25 to 2 cm. 4. The sensor of claim 1, wherein the proximal end portion has a length of 0.05 to 3 cm. 5. The sensor of claim 1, wherein the width of the proximal end portion between the first side and the second side is 0.5 mm to 15 mm. 6. The sensor of claim 1, wherein the width of the distal end portion between the third side and the fourth side is 2 mm or less. 7. The sensor of claim 1 wherein the width of the proximal end portion between the first side and second side is at least about three times greater than the width of the distal end portion between the third side and fourth side. 8. The sensor of claim 1 wherein the width of the proximal end portion between the first side and second side is at least about six times greater than the width of the distal end portion between the third side and fourth side. 9. The sensor of claim 1 wherein the proximal end portion has a length and the width of the proximal end portion is at least about twenty percent greater than the length. 10. The sensor of claim 1 wherein the proximal end portion and distal end portion each have a length, the length of the proximal end portion being at least about ninety percent of the length of the distal end portion. 11. The sensor of claim 1 wherein at least one of the third side and fourth side of the distal end portion has a barb. 12. A transcutaneous electrochemical sensor comprising: a thin flexible substrate having a generally rectangular proximal end portion having a first side and a second side and a generally rectangular distal end portion having a third side and a fourth side, the distal end portion being adjacent to the proximal end portion and extending therefrom; a plurality of contact pads located within the proximal end portion; a plurality of conductive traces located on the distal end portion and the proximal end portion such that the conductive traces electrically communicate with the contact pads; and a sensing layer adjacent a distal end of the distal end portion such that it electrically communicates with at least one of the conductive traces, wherein the first side and the second side are opposite parallel sides and the third side and fourth side are opposite parallel sides, wherein the first and third sides together form a continuous straight edge, and wherein the second and fourth sides are offset from each other to provide a proximal end width that is greater than a distal end width.
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