Abstract: This application provides a wireless charging coil, and an electronic device and an antenna that include the wireless charging coil. The wireless charging coil includes a plurality of coil groups that are at a plurality of layers and that are connected in series, and an insulation layer that is disposed between two layers of the plurality of coil groups. The wireless charging coil includes a first area and a second area that is disposed at an outer periphery of the first area. A plurality of coil groups disposed in the second area are arranged at the plurality of layers, and each coil group includes a plurality of coils wound in parallel at one layer.

Abstract: A wireless charging coil winding method, an electronic device, and a communication system. In the wireless charging coil winding method, based on specifications (for example, a coil thickness and a coil winding width) of a coil to be designed, a coil of any quantity of layers and any quantity of turns can be obtained through combination in any one or more of the following manners: an N-layer 1-turn coil whose N layers of wires are wound in parallel, an N-layer N-turn coil whose N layers of wires are wound in series, an N-layer M-turn coil (N>M) whose N layers of wires are series-parallel-wound and a part of wires are wound in series, and the like.

Abstract: This application provides a wireless charging coil, and an electronic device and an antenna that include the wireless charging coil. The wireless charging coil includes a plurality of coil groups that are at a plurality of layers and that are connected in series, and an insulation layer that is disposed between two layers of the plurality of coil groups. The wireless charging coil includes a first area and a second area that is disposed at an outer periphery of the first area. A plurality of coil groups disposed in the second area are arranged at the plurality of layers, and each coil group includes a plurality of coils wound in parallel at one layer.

Abstract: Provided are a wireless charging apparatus, an electronic device, and an electronic device protective casing. The wireless charging apparatus includes a wireless charging coil and a magnetic attraction structure for alignment during charging. The magnetic attraction structure includes an annular magnet located on peripheries of the wireless charging coil and a central magnet located at a center of the wireless charging coil, where the annular magnet is configured for attraction and alignment with a primary electronic device, the central magnet is configured for attraction and alignment with a secondary electronic device, and a magnetic attraction surface formed by the central magnet is configured to repel a corresponding magnetic attraction surface on the primary electronic device.

Abstract: This application provides a wireless charging device for charging an electronic device. The wireless charging device includes a housing, a transmit coil, and a heat dissipation assembly. The housing is provided with a panel. The transmit coil is disposed in the housing, and is located on a side of the panel. The housing is configured to place an electronic device to be charged, and the electronic device is at a distance from the panel. The housing is provided with an air vent located under the panel. The heat dissipation assembly includes a semiconductor refrigeration chip and a fan. The semiconductor refrigeration chip includes a cold end and a hot end. The hot end is disposed on the housing. The fan is disposed on the housing, and air blown by the fan passes through the cold end and is blown out from the air vent.

Abstract: This application provides a voltage conversion circuit, which includes: a first switch unit, connected in series between an input end and a first node; a second switch unit, connected in series between the first node and a second node; a first capacitor unit, connected in series between the first node and a third node; a second capacitor unit, connected in series between the second node and a fourth node; a third switch unit, connected in series between the third node and a fifth node; a fourth switch unit, connected in series between the third node and a ground end; a fifth switch unit, connected in series between the fifth node and an output end; a third capacitor unit, connected in series between the fifth node and a sixth node; a sixth switch unit, connected in series between the sixth node and the output end; a seventh to tenth switch units.

Abstract: This application provides a battery protection circuit, a battery protection board, a battery, and a terminal device. The battery protection circuit includes: a first detection unit; a second detection unit; and a current detection element, a first switch unit, and a second switch unit that are configured to connect to an electrochemical cell in series, to form a charging loop or a discharging loop. The first detection unit corresponds to the first switch unit, and the second detection unit corresponds to the second switch unit. Each detection unit controls, based on a detected voltage at two ends of the same current detection element, a corresponding switch unit to be closed or opened, so as to control the loop to be closed or opened.

Abstract: A terminal, a power supply method for the terminal, and a charging and discharging management circuit. The terminal includes a load circuit, a battery, and a charging and discharging management circuit. The battery is configured to supply a voltage to the load circuit. The charging and discharging management circuit is coupled to the load circuit and the battery. The charging and discharging management circuit is configured to receive an input voltage, and charge the battery after stepping down the input voltage. When the battery voltage is greater than a threshold voltage, the battery supplies a voltage to the load circuit. When the battery voltage decreases to the threshold voltage, the charging and discharging management circuit steps up the battery voltage, and outputs a stepped-up voltage to the load circuit.

Abstract: The charging/discharging protection circuit comprises a power supply end, a grounding end, and an under-voltage protection threshold control end; the power supply end is connected to a positive electrode of a battery; the grounding end is connected to a negative electrode of the battery; the under-voltage protection threshold control end is configured to receive a first control signal. The charging/discharging protection circuit is configured to reduce an under-voltage protection threshold of the battery under the control of the first control signal when the temperature of the battery is smaller than a set temperature threshold and the discharging current of the battery is greater than a set current threshold.

Abstract: This application provides a battery protection circuit, a battery protection board, a battery, and a terminal device. The battery protection circuit includes: a first detection unit; a second detection unit; and a current detection element, a first switch unit, and a second switch unit that are configured to connect to an electrochemical cell in series, to form a charging loop or a discharging loop. The first detection unit corresponds to the first switch unit, and the second detection unit corresponds to the second switch unit. Each detection unit controls, based on a detected voltage at two ends of the same current detection element, a corresponding switch unit to be closed or opened, so as to control the loop to be closed or opened.

Abstract: Disclosed herein are aspects of a tracheal breathing tube that provides for accurate and reliable control of cannula cuff pressure. Such a tracheal breathing tube include a pressure controller through which a fluid is supplied to a cannula cuff of a tracheal breathing tube and which enables reliable indication of a level of pressure of fluid within the cannula cuff. The pressure controller serves to achieve a proper interface between the cannula cuff and a patient's trachea, thereby addressing important clinical considerations such as anesthesiologist control. Moreover, the pressure controller serves to ensure that proper force is being applied on the patient's tracheal walls by the cannula cuff to thereby limit the potential for post-surgical complications resulting from, for example, inadequate blood supply to an organ or part of the body. swelling of the patient's tracheal walls that can lead to difficulty in breathing, and the like.

Abstract: A probe device is adapted for use in enabling implanted articles of spine surgery to be accurately and safely positioned relative to anatomy that can be injured during placement of such implanted article. The probe device can be used with a neuromonitoring system to assist in location of the spinal nerves by administration of low-voltage electrical stimulation during bone preparation and/or placement (e.g., insertion) of an implanted article (e.g., a bone screw) during an open or percutaneous minimally-invasive surgical approach of the spine. By monitoring the low-voltage electrical stimulation and/or a signal generated in response the low-voltage electrical stimulation being the administered, proximity to a patient's anatomy that is susceptible to being injured by the bone preparation and/or placement of the implanted article can be determined and placement of the implanted article can be performed in a manner that minimizes the potential for injury to such anatomy.

Abstract: Disclosed herein are aspects of a tracheal breathing tube that provides for accurate and reliable control of cannula cuff pressure. Such a tracheal breathing tube include a pressure controller through which a fluid is supplied to a cannula cuff of a tracheal breathing tube and which enables reliable indication of a level of pressure of fluid within the cannula cuff. The pressure controller serves to achieve a proper interface between the cannula cuff and a patient's trachea, thereby addressing important clinical considerations such as anesthesiologist control. Moreover, the pressure controller serves to ensure that proper force is being applied on the patient's tracheal walls by the cannula cuff to thereby limit the potential for post-surgical complications resulting from, for example, inadequate blood supply to an organ or part of the body. swelling of the patient's tracheal walls that can lead to difficulty in breathing, and the like.

Abstract: A stimulation probe apparatus as provided herein offers adjustability of a conductive probe tip thereof relative to a handle assembly thereof to which the conductive probe tip is physically attached. The adjustability of the conductive probe tip relative to the handle assembly provide for a surgeon's ability to selectively orientate the conductive probe tip with respect to the handle assembly for enabling a desired placement of the conductive probe tip relative to the handle assembly. In this respect, by allowing a surgeon to selectively control the direction of the conductive probe tip to point in a desired angle, embodiments of the present invention serve clinical needs that help surgeon to perform electrophysiological testing in diverse anatomical structures and in diverse operation procedures.

Abstract: An endotracheal tube electrode assembly comprises an elongated electrode body, a plurality of electrodes and a layer of insulating material. The elongated electrode body has a semi-circular cross-sectional shape defining an endotracheal tube-receiving channel that extends along a length of the elongated electrode body. The plurality of electrodes is provided on a surface of the elongated electrode body outside of the endotracheal tube-receiving channel. The electrodes extend along a length of the elongated electrode body. Each of the electrodes is formed from a conductive material applied directly onto the elongated electrode body. The layer of insulating material formed on the elongated electrode body covering a portion of each one of the electrodes, thereby providing an uncovered portion of the at least one pair of electrodes to serve as a patient contacting thereof.

Abstract: A stimulation probe apparatus as provided herein offers adjustability of a conductive probe tip thereof relative to a handle assembly thereof to which the conductive probe tip is physically attached. The adjustability of the conductive probe tip relative to the handle assembly provide for a surgeon's ability to selectively orientate the conductive probe tip with respect to the handle assembly for enabling a desired placement of the conductive probe tip relative to the handle assembly. In this respect, by allowing a surgeon to selectively control the direction of the conductive probe tip to point in a desired angle, embodiments of the present invention serve clinical needs that help surgeon to perform electrophysiological testing in diverse anatomical structures and in diverse operation procedures.

Abstract: A cable assembly comprising a signal conductor, a needle electrode electrically connected to the signal conductor and a safety cover having a central passage therein. The signal conductor extends through the central passage. The safety cover is moveable along the signal conductor for allowing the needle electrode to become positioned within the central passage.

Abstract: A cable assembly comprising a signal conductor, a needle electrode electrically connected to the signal conductor and a safety cover having a central passage therein. The signal conductor extends through the central passage. The safety cover is moveable along the signal conductor for allowing the needle electrode to become positioned within the central passage.

Abstract: An apparatus for monitoring neurological and/or neurophysiological signals of a patient has a signal conductor, an electrode, and a safety cover. The signal conductor has a first end portion and a second end portion. The electrode has a first end portion and a second end portion. The first end portion is a skin piercing portion of the electrode and the second end portion is electrically connected to the first end portion of the signal conductor. The safety cover has an electrode shrouding space therein. The electrode shrouding space is configured in a manner allowing the first end portion of the electrode to be positioned within the electrode shrouding space as a result of the safety cover being moved along a length of the signal conductor toward the first end portion of the electrode.