Intraocular physiological sensor
An implantable intraocular physiological sensor for measuring a physiological characteristic, such as intraocular pressure. The implantable intraocular physiological sensor may include a tubular main body configured to house one or more electrical components. The implantable intraocular physiological sensor may also include a sensor cap configured to be inserted into a first end of the tubular main body with a moisture barrier seal. The implantable intraocular physiological sensor may wirelessly transmit measurements to an external device.
1 . An implantable intraocular physiological measurement device comprising:
a housing;
a sensor portion configured to be coupled with a first end of the housing with a moisture barrier seal, the sensor portion comprising a sensing module configured to measure a physiological characteristic of an organism;
a plurality of electrical components within the housing mounted on a carrier member at spaced apart intervals, wherein the sensor portion comprises a cutout configured to physically mate with one end of the carrier member; and
a spiraled antenna that is disposed within an interior of the housing, wherein the spiraled antenna spirals around the carrier member,
wherein the implantable intraocular physiological measurement device is configured to be anchored to an anatomical feature of a human eye,
wherein the carrier member includes a square or rectangular cross-sectional shape, and
wherein the sensor portion further comprises one or more feedthrough conductors formed through a body of the sensor portion extending from the sensing module to the cutout of the sensor portion, wherein the feedthrough conductors electrically connect the carrier member to the sensing module when the one end of the carrier member is physically mated with the cutout.
2 . The implantable intraocular physiological measurement device of claim 1 , further comprising a tip cap configured to be coupled with a second end of the housing with a moisture barrier seal.
3 . The implantable intraocular physiological measurement device of claim 1 , wherein the moisture barrier seal comprises one or more O-rings at an interior junction between the housing and the sensor portion.
4 . The implantable intraocular physiological measurement device of claim 1 , wherein the moisture barrier seal comprises material applied at an exterior junction between the housing and the sensor portion.
5 . The implantable intraocular physiological measurement device of claim 1 , wherein the sensing module comprises an intraocular pressure sensing module.
6 . The implantable intraocular physiological measurement device of claim 5 , wherein the intraocular pressure sensing module comprises a microelectromechanical system (MEMS) variable capacitor.
7 . The implantable intraocular physiological measurement device of claim 1 , wherein the sensor portion comprises a plug portion that is configured to be coupled with the housing and a head portion that extends from the housing when the sensor portion is coupled with the housing.
8 . The implantable intraocular physiological measurement device of claim 1 , wherein the sensor portion is fully recessed within the housing when the sensor portion is coupled with the housing.
9 . The implantable intraocular physiological measurement device of claim 1 , wherein the housing is formed of ceramic to provide a moisture barrier for protection of electrical components.
10 . The implantable intraocular physiological measurement device of claim 1 , wherein the spiraled antenna is configured to wirelessly transmit measurement values to, and to wirelessly receive power for charging a battery module from, an external device.
11 . The implantable intraocular physiological measurement device of claim 1 , further comprising a controller module configured to cause the sensing module to perform measurements at regular intervals.
12 . The implantable intraocular physiological measurement device of claim 11 , wherein the measurements are compressed using a data compression algorithm before being stored in a measurement storage module.
13 . The implantable intraocular physiological measurement device of claim 1 , wherein the sensor portion is formed of glass.
14 . The implantable intraocular physiological measurement device of claim 1 , further comprising a battery module configured to power one or more electrical components, the battery module comprising sufficient energy to power the intraocular physiological measurement device for at least about 90 days.