摘要:
Methods and devices for monitoring intra-ocular pressure of a patient using a miniature implantable sensor device are provided herein. Methods include obtaining multiple pressure measurements each day during an increment of an extended monitoring period according to a sampling program and wirelessly transmitting stored measurement data and wirelessly charging the device. Measurements and data process is performed with low power requirements such that sampling can be performed hourly for at least one week using energy stored on the miniature device and measurement data can be transmitted and the device charged rapidly when an external portable data acquisition/charging device is held in proximity to the device. In one aspect, methods include switching between differing use modes and powering the sampling device with a high impedance battery by switching between a supercapacitor and the battery with a microcontroller to perform impedance conversion.
摘要:
Methods and devices for implanting an intra-ocular pressure sensor within an eye of a patient are provided herein. Methods include penetrating a conjunctiva and sclera with a distal tip of a fluid-filled syringe and positioning the pressure sensor within a vitreous body of the eye by injecting the sensor device through the distal tip. The sensor device may be stabilized by one or more anchoring members engaged with the sclera so that the pressure sensor of the sensor device remains within the vitreous body. Methods further include advancing a sensor device having a distal penetrating tip through at least a portion of the sclera to position the sensor within the vitreous body and extracting of the sensor devices described herein by proximally retracting the sensor device using an extraction feature of the sensor device.
摘要:
The present invention describes vertically stacked and hermetically sealed implantable pressure sensor devices for measuring a physiological signal. The implantable device comprises multiple layers, including a first wafer having a pressure sensor configured to measure the physiological signal and a second wafer having at least a digitizing integrated circuit. The first wafer is vertically stacked or disposed over the second wafer so as to form a hermetic seal. The device may include one or more additional layers adapted for energy storage and transfer, such as a third layer having a super-capacitor and a fourth layer having a thin film battery.
摘要:
Methods and devices for implanting an intra-ocular pressure sensor within an eye of a patient are provided herein. Methods include penetrating a conjunctiva and sclera with a distal tip of a fluid-filled syringe and positioning the pressure sensor within a vitreous body of the eye by injecting the sensor device through the distal tip. The sensor device may be stabilized by one or more anchoring members engaged with the sclera so that the pressure sensor of the sensor device remains within the vitreous body. Methods further include advancing a sensor device having a distal penetrating tip through at least a portion of the sclera to position the sensor within the vitreous body and extracting of the sensor devices described herein by proximally retracting the sensor device using an extraction feature of the sensor device.