TRANSCUTANEOUS READER FOR USE WITH IMPLANTABLE ANALYTE SENSORS
First Claim
Patent Images
1. An apparatus, comprising:
- a reader substrate;
a photodetector configured to receive light emitted by a sensor implanted at an implantation depth within tissue, the photodetector coupled to a central portion of the reader substrate;
a plurality of emitters, each emitter from the plurality of emitters coupled to a peripheral portion of the reader substrate, each emitter configured to produce a far-field illumination pattern at the implantation depth, each emitter spaced apart from each other emitter such that, in the absence of optical scattering induced by the tissue, the collective far-field illumination pattern of the plurality of emitters has a central dark region at the implantation depth.
1 Assignment
0 Petitions
Accused Products
Abstract
Some embodiments described herein relate to a reader having a distributed source of radiation and a photodetector. The photodetector can be operable to sense radiation (e.g., light) emitted by an implanted sensor. The distributed source of radiation can at least partially surrounds the photodetector. The distributed source of radiation generates a photon cloud of excitation radiation within the skin, which can substantially envelopes a sensor that is implanted within the skin at a depth that is on the order of a centimeter or less.
-
Citations
22 Claims
-
1. An apparatus, comprising:
-
a reader substrate; a photodetector configured to receive light emitted by a sensor implanted at an implantation depth within tissue, the photodetector coupled to a central portion of the reader substrate; a plurality of emitters, each emitter from the plurality of emitters coupled to a peripheral portion of the reader substrate, each emitter configured to produce a far-field illumination pattern at the implantation depth, each emitter spaced apart from each other emitter such that, in the absence of optical scattering induced by the tissue, the collective far-field illumination pattern of the plurality of emitters has a central dark region at the implantation depth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An apparatus, comprising:
-
a reader substrate; a photodetector configured to receive light emitted by a sensor implanted within tissue, the photodetector coupled to a central portion of the reader substrate; a plurality of emitters, each emitter from the plurality of emitters coupled to the reader substrate at a position radial to the central portion of the reader substrate; and a optical isolation member coupled to the reader substrate at a position radial to the plurality of emitters, the optical isolation member configured to reflect light emitted from each of the plurality of emitters towards the central portion of the reader substrate. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A method, comprising:
-
emitting a first cone of light from a first emitter such that the first cone of light illuminates a first portion of a sensor disposed within tissue at an implantation depth, the first cone of light emitted from the first emitter such that, in the absence of scattering or reflection, the first cone of light has a diameter at the implantation depth that is less than a length of the sensor; emitting a second cone of light from a second emitter such that the second cone of light illuminates a second portion of the sensor, the second cone of light emitted from the second emitter such that, in the absence of scattering or reflection, the second cone of light has a diameter at the implantation depth that is less than the length of the sensor, the second emitter spaced apart from the first emitter such that the first cone of light and the second cone of light, in the absence of scattering or reflection, do not overlap at the implantation depth; receiving, at a photodetector, an emission signal from the sensor, the emission signal produced by the sensor in response the sensor being illuminated by the first cone of light and the second cone of light, the emission signal having an intensity associated with an entire length of the sensor being illuminated by the first cone of light and the second cone of light, collectively. - View Dependent Claims (17, 18, 19, 20, 21, 22)
-
Specification