Abstract: A hydraulically balanced water-stop switch mechanism includes a water passage pipe, a water passage is formed between an inner pipe and an outer pipe of the water passage pipe. One end of the inner pipe is a closed end, and the other end is movably provided with a water-stop plug. A switch assembly is configured to cause movement of the water-stop plug. A chamber is formed between the water-stop plug and the closed end in the water passage pipe, and the chamber is provided with a ventilation hole. Preferably, the switch assembly includes a push rod, a automatic retractable and locking mechanism as applied in a ballpoint pen, and a elastic reset member for causing the water-stop plug to move toward the water outlet.

Abstract: A waterway switching structure for a multifunctional shower head includes a water diversion seat, a water outlet body, a switching assembly, and a driving assembly. The driving assembly includes a rotating shaft, a driving wheel, a master wheel, and a slave wheel. The driving wheel is rotatably connected to the rotating shaft, the master wheel and the slave wheel are linked to the rotating shaft. A first end of the driving wheel is movably provided with a driving detent which fits into the notch of the master wheel, the slave wheel is provided with water inlet holes. The switching assembly is rotatably connected to the driving wheel. A second end of the driving wheel is connected to a resetting member to move the driving wheel backward. The slave wheel is driven to enable the water inlet holes selectively switch on the water diversion holes communicating with the respective waterway.

Abstract: An endovascular plaque excision system (10), comprising: a balloon catheter system (13) adapted to be inserted into a blood vessel, the balloon catheter system (13) comprising a guide catheter, and a first balloon (131), a second balloon (132) and a third balloon (133) which are disposed at a distal end, the first balloon (131), the second balloon (132) and the third balloon (133) being adapted to be inflated to block the flow of blood in the blood vessel, and the second balloon (132) comprising a blood bypass unit; an endoscope device (12), which comprises an endoscope connecting pipe and an illumination unit and an image acquisition unit which are disposed at a distal end of the connecting pipe, and is adapted to be inserted into the blood vessel via the guide catheter to perform illumination and image acquisition; and an endarterectomy device (14), which comprises an operation unit disposed at a proximal end, an endarterectomy unit disposed at a distal end, and an endarterectomy connecting pipe for connect

Abstract: A waterway switching structure for a multifunctional shower head includes a water diversion seat, a water outlet body, a switching assembly, and a driving assembly. The driving assembly includes a rotating shaft, a driving wheel, a master wheel, and a slave wheel. The driving wheel is rotatably connected to the rotating shaft, the master wheel and the slave wheel are linked to the rotating shaft. A first end of the driving wheel is movably provided with a driving detent which fits into the notch of the master wheel, the slave wheel is provided with water inlet holes. The switching assembly is rotatably connected to the driving wheel. A second end of the driving wheel is connected to a resetting member to move the driving wheel backward. The slave wheel is driven to enable the water inlet holes selectively switch on the water diversion holes communicating with the respective waterway.