A vein imager includes: a laser, mirror, photodiode, optical element, and lens. The laser emits a beam of light at a first wavelength in a first optical path. The mirror directs the beam to form a spot on the target surface and scans the beam of laser light to move the spot rapidly on the target surface. The optical element bounces the beam of light from the first optical path onto a second optical path, and directs the beam of light at the mirror. The mirror also directs an image portion at the first wavelength, received from the target surface, along the second optical path and to the photodiode. The photodiode receives the image portion at the first wavelength. The mirror includes a bevel-shaped coating applied to each of first and second ends and/or rounded first and second ends by removing some material, to resist dust buildup.

A packet energy transfer (PET) receiver comprising receiver front-end circuitry including an input, an output, and at least one switch connected at the output. There is receiver output control and conditioning circuity including an input and an output to be connected to an electrical load. There is a synchronizer circuit to close the switch to allow power to flow into the receiver output control and conditioning circuitry during each of the first plurality of transfer periods of the transmitter and to open the switch to prevent power to flow into the receiver output circuitry during a first plurality of sample periods. There is a load controller that disables the synchronizer circuit and operates the switch to close it and allow power to flow into the receiver output control and conditioning circuitry during subsequent transfer periods and to open the switch to prevent power to flow during a subsequent sample periods.

Generally discussed herein are systems, devices, and methods for providing a therapy (e.g., stimulation) and/or data signal using an implantable device. Systems, devices and methods for interacting with (e.g., communicating with, receiving power from) an external device are also provided.

SA surgical room power system including at least one source of power wired to a power source for a surgical room, the at least one source of power being wired to the surgical room; at least one power receiver; and a surgical power consumer wired to the at least one power receiver, the surgical power consumer being configured to assist a surgeon during a surgical procedure on a patient. The at least one source of power wirelessly transfers power to the at least one power receiver for powering the surgical power consumer.

A battery device for a medical instrument for supplying electric energy to instrument-internal electric equipment, preferably an electric motor, having: an electronic controller which is integrally formed with the battery for actuating the entire instrument-internal electric equipment, preferably on the basis of actuation signals from an operator; a plurality of functions including a corresponding sensor system; and an integrated intelligence at least consisting of a protection circuit, a motor controller, and a wireless communication interface.

The present invention concerns a power supply arrangement for a portable electronic device. The inventive arrangement uses a large value capacitor in the power supply circuitry to extend the operational life of the battery. The large capacitor builds up the power reserve thereby increasing current output. Because of the small footprint of the device, multiple smaller capacitors are connected in series to build up the large capacitor value. The arrangement preserves battery power by reducing the leakage typically present when using a single large capacitor. The arrangement also effectively reduces the battery's internal resistance.

A transmit resonator for use in a wireless power transfer system is provided. The transmit resonator includes a core defining an annular groove, a coil element disposed within the annular groove, and a housing surrounding the core and the coil element. The housing includes a casing. and a metal plate, wherein the metal plate is positioned on a side of the transmit resonator that is opposite a receive resonator during operation of the wireless power transfer system, and wherein the metal plate facilitates reducing far-field electromagnetic emissions and improving cooling of the wireless power transfer system.

A subcutaneously implantable device includes a housing, a clip attached to the housing that is configured to anchor the device to a muscle, a bone, and/or a first tissue, and circuitry in the housing that is configured to provide monitoring, therapeutic, and/or diagnostic capabilities with respect to an organ, a nerve, the first tissue, and/or a second tissue. The circuitry includes sensing circuitry and/or therapy circuitry, a first power source, and a transceiver. The device further includes an antenna attachment including a head configured to be subcutaneously positioned in a patient and an arm extending between the housing and the head, wherein the head is in electrical communication with the first power source and the transceiver, and wherein the antenna attachment is flexible.

In one aspect, the present disclosure is directed to an implantable medical device including a housing having a generally planar portion, and a piezoelectric transducer disposed within the housing, wherein at least a portion of the piezoelectric transducer is arranged at an oblique angle to the generally planar portion of the housing, and an electrode to deliver a neurostimulation therapy. The implantable medical device is configured to receive energy signals from an external device and transduce the received energy signals into electrical power.

An ocular system includes an ocular device (10), having a coil (16), for deployment in or on the eyeball, and an auxiliary device, including a coil (18), integrated into a patch (12) for deployment on an eyelid or adjacent to the eye. The auxiliary device also includes driver circuitry connected to the auxiliary-device coil, for wirelessly transferring energy and/or exchanging data between the auxiliary device and the ocular device via inductive coupling between the auxiliary-device coil and the ocular-device coil. The auxiliary-device coil (18) has windings of conductive wire about a magnetic core (30) configured so as to define a primary direction of induced magnetic field through the auxiliary-device coil that is tangential to the skin surface.