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US 6,442,413 B1Granted
Implantable sensor
OwnerJames H. Silverinventor
Life of this patent
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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.
Claims20
A blood glucose detector for implantation within a blood vessel, comprising:
- a 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, wherein the support comprises an enlargeable frame and an expandable tubular body;
- and
- a sensor carried by 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 tubular sheath on the tubular body, wherein the sheath is on the radially inwardly facing surface of the tubular body.
2 more elements
An implantable sensor for sensing the presence of an analyte in a vessel, comprising:
- 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 comprising gradually sloped surfaces 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 tubular sleeve surrounding the tubular support structure, wherein the tubular sleeve is on the radially inwardly facing surface of the tubular support structure.
3 more elements
Dependencies are inferred from the claim text.