5results about How to "Smooth navigation" patented technology

The invention relates to the technical field of medical instruments, in particular to a piezoelectric driving miniature optical probe for cerebrovascular interventional imaging, which comprises a glass tube base body, a single piezoelectric ceramic piece and the like, and is characterized in that the glass tube base body is of a hollow cylindrical structure, and an inclined groove is formed in the axial center of the glass tube base body; the single piezoelectric ceramic piece is fixed on the outer side of the glass tube base body. Through a hollow rod type stator structure composed of a single piezoelectric ceramic piece and a glass tube base body with a 10-degree inclined groove, mode conversion from longitudinal vibration to longitudinal-torsional coupling vibration is achieved, an elliptical motion track is formed at the position of a miniature magnetic ring at the front end of the stator, 360-degree optical scanning is achieved through friction driving of a rotor, and the mechanical property of the motor is improved. Compared with a traditional far-end miniature probe with the diameter usually larger than 1.5 mm, the whole outer diameter of the probe is reduced to 0.4 mm, and smooth navigation and passing in tortuous and narrow brain middle artery (the diameter is usually smaller than 0.5 mm) are easier.

This utility model discloses a milling head structure for a CNC roll thread milling machine, including a milling head. The milling head consists of a drill rod and a milling cutter. The milling cutter is mounted at the bottom end of the drill rod. An air duct is provided in the middle of the drill rod, and an arc-shaped air inlet is provided at the upper end of the drill rod, which is connected to the air duct. An air outlet is provided at the bottom end of the drill rod, which is connected to the air duct. When the CNC roll thread milling machine is working, external high-pressure gas enters through the arc-shaped air inlet at the upper end of the drill rod. The arc design allows the gas to be guided more smoothly to the air duct. The gas flows downward along the air duct inside the drill rod and finally exits from the air outlet at the bottom end of the drill rod. The ejected high-pressure gas can effectively blow away the iron filings generated by the milling cutter during the cutting process, avoiding the accumulation of iron filings that affect machining accuracy and milling cutter life.

A loom yarn hook device, comprising a shears support frame, a cantilever beam, a yarn hook hanger and a yarn hook, the cantilever beam is inserted into the shears support frame, the yarn hook hanger is fixed on the cantilever beam, the cantilever beam is fixed with a yarn hook fixing rod, the rod body of the yarn hook fixing rod is fixed with the yarn hook on the side away from the shears support frame, the yarn hook hanger is provided with a strip-shaped hole, the yarn hook fixing rod is provided with a blocking cover corresponding to the limiting block slot on the periphery of the strip-shaped hole, and the end of the yarn hook fixing rod on the side of the recess in the blocking cover is screwed with a second locking nut after passing through the strip-shaped hole. The yarn hook device creatively provides a positioning structure between the yarn hook hanger and the yarn hook fixing rod, which is not easy to loosen horizontally and vertically, is firmly positioned, and does not produce burrs on the guide part due to up-down movement positioning, solves the defects that the yarn hook fixing rod of the existing yarn hook device is not firmly positioned and is easy to produce burrs due to movement, and can effectively ensure the guiding effect of the fabric or yarn.

The utility model relates to an air sterilizer structure, and relates to the technical field of air sterilization. The air sterilizer structure comprises a protective shell, a supporting gasket, a mounting seat, a photocatalyst carrier, an air guide mechanism, an air inlet unit and an exhaust hood, and the air inlet unit comprises an air collecting hood and an ultraviolet generating device. And finally, the air is exhausted through the exhaust hood, so that the aim of efficiently and safely sterilizing and purifying the air is fulfilled.

The utility model discloses a large-diameter pipeline induction trigger device applied to dusty environment, which comprises a guide movable plate, an overall fixing frame, a ball swing rod limit switch, a reset mechanism and a buffer mechanism, the guide movable plate is arranged above the overall fixing frame, the ball swing rod limit switch is fixed on the overall fixing frame, and the reset mechanism is fixed on the overall fixing frame. The ball swing rod limiting switch is located below the guiding movable plate, a buffering mechanism is arranged between the overall fixing frame and the guiding movable plate, and the limiting buffering mechanism can effectively prevent the situation that when external force is too large, the downward moving amplitude of the guiding movable plate installation base plate is too large, and the ball swing rod limiting switch is crushed. And good buffering is provided, and the shock resistance of the whole device is improved. A reset mechanism is arranged between the guide movable plate and the overall fixing frame, the reset mechanism can rapidly lift the guide movable plate upwards to return to the original position after the large-diameter pipeline leaves the device, and therefore signals of the ball swing rod limiting switch are reset to facilitate next-time induction triggering. According to the utility model, the in-place sensing and triggering of the large-diameter pipeline can be realized, and the influence of dust is avoided.