Abstract:
An optic array connector is disclosed. The fiber optic array includes a first faceplate having a plurality of openings. The first faceplate is oriented in a first direction. The fiber optic array also includes a second faceplate having a plurality of openings. The second faceplate is oriented in a second direction. A plurality of optical fibers are inserted through the plurality of openings in the first faceplate and the plurality of openings in the second faceplate. The second faceplate and the first faceplate are adjusted such that a portion of the openings in the first faceplate and a portion of the openings in the second faceplate contact and hold the optical fibers.
Abstract:
An electrostatic micromotor employs a side drive design. The stator operates in a plane above a substract and a moveable member lies and moves in the plane of the stator. An electrostatic field of operational strength is generated and sustained without breakdown in the plane between the stator and edges of the moveable member. Three fabrication processes enable formation of a moveable member in the plane of operation of the stator and spaced apart from the stator by a micron amount. One fabrication process deposits and patterns a structural layer to form the stator and moveable member over a sacrificial layer. A second fabrication process etches channels in a first structural layer to outline a stator, moveable member, and if desired, a bearing. A substrate is connected to the side of the structural layer through which the channels are etched and the opposite side is ground down to the ends of the channels to form salient stator, rotor and, if desired, bearing structures. The third fabrication process grows a sacrificial layer by local oxidation in an etched cavity of the substrate. A structural layer is then deposited and patterned over the substrate and sacrificial layer to form the stator and moveable member in a common plane. A harmonic side drive micromotor is also provided by the fabrication processes.
Abstract:
A wearable patch is provided for use on the body which preferably comprises an ultrasound sensor array, a transmission system coupled to the ultrasound sensor array adapted to provide signal information for ultrasound transmission into the body, and a receiver system coupled to the ultrasound sensor array adapted to receive signal information from the reflected ultrasound signal received from the body. A control circuitry is coupled to the transmission system and the receiver system. The patch is preferably provided with a wireless communication system to permit external control and or communication. Applications range from diagnostics and monitoring, to rehabilitation and wound healing.
Abstract:
A wireless fetal and maternal monitoring system includes a fetal sensor unit adapted to receive signals indicative of a fetal heartbeat, the sensor optionally utilizing a Doppler ultrasound sensor. A short-range transmission unit sends the signals indicative of fetal heartbeat to a gateway unit, either directly or via an auxiliary communications unit, in which case the electrical coupling between the short-range transmission unit and the auxiliary communications unit is via a wired connection. The system includes a contraction actuator actuatable upon a maternal uterine contraction, which optionally is a EMG sensor. A gateway device provides for data visualization and data securitization. The gateway device provides for remote transmission of information through a data communication network. A server adapted to receive the information from the gateway device serves to store and process the data, and an interface system to permits remote patient monitoring.
Abstract:
Disclosed are MEMS accelerometers and methods for fabricating same. An exemplary accelerometer comprises a substrate, and a proof mass that is a portion of the substrate and which is separated from the substrate surrounding it by a gap. An electrically-conductive anchor is coupled to the proof mass, and a plurality of electrically-conductive suspension anus that are separated from the proof mass extend from the anchor and are coupled to the substrate surrounding the proof mass. A plurality of sense and actuation electrodes are separated from the proof mass by gaps and are coupled to processing electronics. Capacitive sensing is used to derive electrical signals caused by forces exerted on the proof mass, and the electrical signals are processed by the processing electronics to produce x-, y- and z-direction acceleration data. Electrostatic actuation is used to induce movements of the mass for force balance operation, or self-test and self-calibration. The fabrication methods use deep reactive ion etch bulk micromachining and surface micromachining to form the proof mass, suspension arms and electrodes. The anchor, suspension arms and electrodes are made in the same process steps from the same electrically conductive material, which is different from the substrate material.
Abstract:
A wearable patch is provided for use on the body which preferably comprises an ultrasound sensor array, a transmission system coupled to the ultrasound sensor array adapted to provide signal information for ultrasound transmission into the body, and a receiver system coupled to the ultrasound sensor array adapted to receive signal information from the reflected ultrasound signal received from the body. A control circuitry is coupled to the transmission system and the receiver system. The patch is preferably provided with a wireless communication system to permit external control and or communication. Applications range from diagnostics and monitoring, to rehabilitation and wound healing.
Abstract:
A neural probe for stimulating neural tissue is disclosed. The probe comprises a three-dimensional arrangement of individually addressable electrodes. As a result, embodiments of the present invention can steer stimulative electric current through a wide range of paths through neighboring neural tissue. This enables specific targeting of neural selected neural tissue. In addition, embodiments of the present invention provide increased tolerance to probe misplacement or movement after insertion. Further, embodiments of the present invention enable changes in the neural tissue being stimulated without requiring additional surgical procedures.
Abstract:
An electronic device is provided for receiving sounds from a body. A microphone array receives the sounds. An analysis system optionally provides for directional control, such as by providing virtual focusing and beam steering. Body sounds are preferably de-convolved. In certain embodiments, a plurality of buffer structures are located in cavities in a patch adjacent the microphones to provide for improved sound pick-up. In certain embodiments, at least two of microphones are spaced at least 2 centimeters apart. Preferably, wireless transmission circuitry sends information relating to the sounds in the body, and optionally receives information, such as control or status information. Target selection and acquisition systems provide for the effective capture of multiple sounds from the body, even when the device is adhered to the body by the user, that is, not a skilled physician.
Abstract:
Disclosed are MEMS accelerometers and methods for fabricating same. An exemplary accelerometer comprises a substrate, and a proof mass that is a portion of the substrate and which is separated from the substrate surrounding it by a gap. An electrically-conductive anchor is coupled to the proof mass, and a plurality of electrically-conductive suspension arms that are separated from the proof mass extend from the anchor and are coupled to the substrate surrounding the proof mass. A plurality of sense and actuation electrodes are separated from the proof mass by gaps and are coupled to processing electronics. Capacitive sensing is used to derive electrical signals caused by forces exerted on the proof mass, and the electrical signals are processed by the processing electronics to produce x-, y- and z-direction acceleration data. Electrostatic actuation is used to induce movements of the mass for force balance operation, or self-test and self-calibration. The fabrication methods use deep reactive ion etch bulk micromachining and surface micromachining to form the proof mass, suspension arms and electrodes. The anchor, suspension arms and electrodes are made in the same process steps from the same electrically conductive material, which is different from the substrate material.
Abstract:
A polysilicon micromotor, of either inner rotor or outer rotor design, is fabricated with a process that uses as few as three mask steps. In an outer rotor (wobble) micromotor, a free-rotating insulating flange bearing mechanically couples the inner periphery of the rotor to the stator, permitting the outer periphery of the rotor to be directly coupled to other mechanisms. The dielectric constant of the flange bearing increases motive torque of the motor as contrasted with air-gap designs. This and other factors results in motive torque, in the illustrated embodiment, more than 100 times larger than in previous designs. Among its other benefits, the disclosed fabrication process results in in-place formation of all motor elements, and enables precise definition of the rotor/stator gap.