Implantable sensor
First Claim
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1. A blood glucose detector for implantation within a blood vessel, comprising:
- a tubular support, having a first side for contacting the wall of the vessel and a second side for facing radially inwardly toward the center of the vessel;
a sensor carried by the support, the sensor having a streamlined configuration with respect to the support and having a sensing surface thereon;
wherein the sensing surface is spaced radially inwardly from the first side by a distance of at least about 0.2 mm, such that the velocity of blood in the vessel inhibits obstruction of the sensing surface; and
a transmitter on the support, for transmitting information from the sensor to an external receiver.
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Abstract
A sensor is disclosed, for implantation within a blood vessel to monitor an analyte in blood. In one embodiment, the analyte is glucose. A signal indicative of glucose level is transmitted to an external receiver. The signal may also be used to drive an internal or externally worn insulin pump. Methods are also disclosed.
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Citations
25 Claims
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1. A blood glucose detector for implantation within a blood vessel, comprising:
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a tubular support, having a first side for contacting the wall of the vessel and a second side for facing radially inwardly toward the center of the vessel;
a sensor carried by the support, the sensor having a streamlined configuration with respect to the support and having a sensing surface thereon;
wherein the sensing surface is spaced radially inwardly from the first side by a distance of at least about 0.2 mm, such that the velocity of blood in the vessel inhibits obstruction of the sensing surface; and
a transmitter on the support, for transmitting information from the sensor to an external receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An implantable sensor for sensing the presence of an analyte in a vessel, comprising:
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a tubular support structure for anchoring the sensor in the vessel, the support having a side wall with a luminal side facing toward the center of the vessel and an abluminal side facing toward the wall of the vessel;
a sensor housing carried by the support structure, the housing having a streamlined configuration with respect to the support to minimize blood flow turbulence;
a power supply and electrical circuitry in the housing;
a sensing surface exposed to the exterior of the housing;
wherein the sensing surface is positioned on the radially inwardly most portion of the luminal side of the housing; and
a transmitter on the support structure for transmitting information from the sensor to an external receiver. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification