Abstract: Disclosed is a charging cable including a power supply interface, a power receiving interface, a power transfer control circuit, an operational amplifier comparator circuit and a switch circuit for connecting or disconnecting a power pin of the power supply interface and a power pin of the power receiving interface. After the power transfer control circuit successfully handshakes with a charging device and/or a voltage of the power pin of the power receiving interface is less than or equal to a preset voltage of the power pin of the power supply interface, the switch circuit is turned on. After a divided voltage of the power pin of the power receiving interface is greater than a reference voltage and/or the voltage of the power pin of the power receiving interface is greater than the preset voltage of the power pin of the power supply interface, the switch circuit is turned off.

Abstract: The present disclosure provides a composite decellularized matrix membrane and use thereof. The composite decellularized matrix membrane prepared by the present disclosure is prepared by wrapping one layer of a polymer membrane with two layers of decellularized matrix membranes. The decellularized matrix membrane is prepared from at least a biomaterial of a porcine small intestine, a porcine bladder, and porcine skin. The polymer membrane is prepared from at least a polymer material of polycaprolactone, polydimethylsiloxane, polyurethane, polylactic acid-glycolic acid, polyvinyl alcohol, and polyhydroxy fatty acid ester. The composite decellularized matrix membrane prepared by the present disclosure can prevent calculi, makes a patient suffer less, recover faster, live better, and cost less, while medical resources are saved, and hope for treatment is also brought for some patients with a contraindication to an in-situ ileal neobladder surgery.

Abstract: A controllable operation-free take-out ureteral stent with a degradable coating includes a ureteral stent, a traction wire, a discharged body, and a degradable fixture, where the discharged body is fixed on one end of the traction wire, and the degradable fixture fixes the discharged body on the other end of the traction wire and is arranged close to one end of the ureteral stent within a limited period of time; the ureteral stent comprises a nondegradable base layer and a degradable coating which are sequentially arranged from inside to outside; the problem of bacterial adhesion on the surface of the ureteral stent caused by long indwelling time or patients' special allergies can be solved by automatic degradation and peeling off of the degradable coating on the surface of the ureteral stent within a certain period of time.

Abstract: A fluorescence microscopy system includes a probe configured to deliver an optical manipulation beam to one or more selected specimen regions. In a selected example, the probe includes a hollow light guide formed by a quartz capillary tube, and surrounded by a fluorescent sheath. Probes also include light guides defined by cavities in fluorescent glass. Such fluorescent probes can be imaging using fluorescence produced by an excitation light flux selected to produce specimen fluorescence.