An oral care device for placement in the oral cavity. The oral care device may include a support component, a piezoelectric component, and/or a therapeutic element. The support component is configured for placement between one or more maxillary teeth and one or more mandibular teeth. The piezoelectric element is configured to generate an electrical current from relative movement of the maxillary teeth and the mandibular teeth. The therapeutic element is configured to release a therapeutic composition into the oral cavity at least in part in response to receiving the electrical signal. The device may include the piezoelectric component, the therapeutic element, or both.

This disclosure provides systems and methods for delivering a neural stimulation pulse. A neural implant device can include an energy harvesting circuit configured to receive an input signal and generate an electrical signal based on the received input signal. A diode rectifier in series with the energy harvesting circuit can rectify the electrical signal. The energy harvesting circuit and the diode rectifier can be encapsulated within a biocompatible electrically insulating material. A neural electrode can be exposed through the biocompatible electrically insulating material. The neural electrode can be configured to deliver a neural stimulation pulse. The neural implant device can have a volume that is less than about 1.0 cubic millimeter.

A piezoelectric energy harvester has a layered structure comprising a first electrode, a polymeric piezoelectric material, and a second electrode, the layered structure coupled to receive mechanical stress from the environment, and the first and second electrode electrically coupled to a power converter. The power converter is adapted to charge an energy storage device selected from a capacitor and a battery. The method of harvesting energy from the environment includes providing a piezoelectric device comprising a layer of a polymeric piezoelectric material disposed between a first and a second electrode; coupling mechanical stress derived from an environment to the piezoelectric device; and coupling electrical energy from the piezoelectric device.

A recharging system for recharging batteries or providing power to an implantable device includes an electric coil adapted to be coupled to the implantable device, the electric coil defining a coil interior and a coil exterior. A magnetic component is coupled to the electric coil and adapted to at least partially surround the implantable device. A mechanical actuator is attached to the magnetic component, the mechanical actuator converting compression motion into motion of the magnetic component relative to the electric coil.

An intracardiac energy harvesting device includes a shell; a fixing mechanism arranged on the shell, and a fixing mechanism configured to fix the shell to an interior of a heart chamber to enable the shell to move along with beating of heart; wherein a nanogenerator module is packaged in the shell, which is configured to output electric energy in response to movement of the shell along with the heart beat; and a power management module is packaged in the shell for managing electric energy output by the nanogenerator module. According to the intracardiac energy collecting device disclosed by the present invention, the biological mechanical energy generated by heart beating can be collected in the heart through a minimally invasive interventional operation mode, surgical wounds are small, damage to the heart cannot be caused, and infection can be effectively avoided.

This module comprises: a circuit for interfacing with the piezoelectric beam of an oscillating pendular unit, outputting a rectified signal comprising a sequence of pulses at a frequency equal to a multiple of the oscillation frequency of the pendular unit; a buffer capacitor charged by the successive pulses outputted by the interface circuit; and a converter regulator adapted to convert a capacitor discharge current into a stabilized power supply voltage, and controlled by a feedback control stage of the Maximum Power-Point Tracking (MPPT) type. A comparator detects the conduction of a blocking diode interposed between the interface circuit and the capacitor, in order to produce a signal representative of the current value of the duty cycle of the detected conduction and non-conduction periods. This signal is compared with a predetermined optimum duty cycle value in order to enable or disable the coupling of the capacitor to the converter regulator so as to control either the capacitor discharge towards an input of the converter regulator, or the continuation of its charging.

An oral care device for placement in the oral cavity. The oral care device may include a support component, a piezoelectric component, and/or sensor and/or a therapeutic element. The support component is configured for placement between one or more maxillary teeth and one or more mandibular teeth. The piezoelectric element is configured to generate electrical energy from relative movement of the maxillary teeth and the mandibular teeth. The sensor is configured to sense a condition in the oral cavity. The therapeutic element is configured to release a therapeutic into the oral cavity. The device may include any one or any combination of the piezoelectric component, the therapeutic element, and the sensor.

The module comprises, in an envelope tube, a pendular unit comprising a piezoelectric transducer, PZT, beam, an inertial mass coupled to the free end of the beam, and a beam mount secured to the tube and fastened to a clamping part of the beam. The module further includes a symmetrization insert for calibrating and symmetrizing the pendular unit oscillations in transverse and lateral directions. The symmetrization insert is distinct from the beam mount and comprises a peripheral portion secured to the tube independently of the beam mount, and a central portion with an axial through-cavity inside which the beam extends in said region of free travel. The axial cavity extends between opposite travel limitation surfaces, which are symmetrical and capable of coming into contact with the beam in a bending configuration of the beam.

A wearable garment includes a compression fabric with at least one electrode coupled to the compression fabric or sewn into seams of the wearable garment. The electrode includes a first layer comprising a metal integral conductive silicone rubber material configured to lay proximate to a wearer of the garment. The electrode may also include a second layer including a conducting metal sheet and a conductive lead coupled to the second layer. A non-conducting layer is configured to lay proximate to the compression fabric.

My invention is a power generator, of which the preferred embodiment is small enough to be implanted into the human body, shaped to fit into the area below the lungs, affixed to the interior body cavity and activated by the rhythmic movement of the diaphragm. A human diaphragm will move up to fifty-millimeters during the involuntary breathing process while a body is resting, in which my implantable power generator will output a stream of pulsed electric current with each inhale and another stream of pulsed electric current while exhaling during the body's minimum breathing period. My implantable power generator has sufficient output energy to supply a pacemaker, implantable pulse generator (IPG) or other medical implants that consume a constant supply of power without using internal batteries that would require repeated surgeries due to constant replacement or external battery packs that require passing wires through the skin and into the body.