5results about How to "Strong structural support" patented technology

The application relates to a covered stent, a preparation method thereof and a covered stent system. The covered stent comprises a metal stent and a covering film arranged on the metal stent. At least the distal end of the covering film is provided with a hole region, the hole region is provided with a plurality of through holes, the through holes can enable blood to flow from the inside of the covered stent to the outside, and the through holes comprise at least one of a circular hole, a rhombic hole and a special-shaped hole. The metal stent comprises a plurality of annular stent segments arranged at intervals along an axial direction, each stent segment has a plurality of edges and a plurality of vertices. At least part of the stent segments is sequentially divided into small wave segments and large wave segments in the direction from the proximal end to the distal end, the small wave segments are used for sealing the covered stent, the large wave segments are used for supporting a blood vessel, and the number of vertices of each stent segment of the small wave segments is greater than the number of vertices of each stent segment of the large wave segments.

The embodiment of the utility model relates to the technical field of unmanned aerial vehicles, and particularly discloses a power sleeve device of an unmanned aerial vehicle, comprising a base provided with a mounting cavity; the clamping device is arranged in the mounting cavity, the clamping device and the base are relatively fixed, the clamping device comprises a first pipe clamp and a second pipe clamp, and the first pipe clamp and the second pipe clamp are arranged in a spaced mode in the first direction; the supporting rod assembly is arranged on the base and comprises a first supporting rod and a second supporting rod, the first supporting rod is arranged in the first pipe clamp, and the second supporting rod is arranged in the second pipe clamp; the electronic speed controller assembly is detachably connected to the outer surface of the base; and the motor assembly is detachably connected to the outer surface of the base, and the motor assembly is connected with the electronic speed controller assembly. By means of the mode, the first pipe clamp and the second pipe clamp can be utilized, the first supporting rod and the second supporting rod are correspondingly installed, the double-supporting-rod design can provide more powerful structural support, and stress under high loads and complex working conditions can be better borne.

The invention discloses a semiconductor structure and a forming method thereof. The structure comprises a printed circuit substrate; the packaging structure is in bonding connection with the printed circuit substrate and comprises a substrate, and a plurality of conductive plugs are arranged in the substrate; the thermal expansion coefficient of the material of the filling layer is greater than that of the material of the substrate; the top redistribution layer and the bottom redistribution layer are located on the substrate; and the chip structure is in bonding connection with the top rewiring layer. By introducing the filling layer with a larger thermal expansion coefficient into the substrate, the problem of huge shear stress accumulation caused by thermal expansion coefficient mismatch between the silicon-based material and the printed circuit substrate is relieved, and the reliability of the packaging structure is improved. After a traditional packaging substrate layer is cancelled, a signal transmission path is greatly shortened, the interface parasitic effect and high-frequency signal loss are further reduced, meanwhile, the simplified framework reduces dependence on a high-density organic substrate, the material cost and the process complexity are reduced, and smooth transition from a chip to system-level connection is achieved.

This utility model relates to the field of packaging bag technology, and in particular discloses a silicone sealing bag product with easy opening and closing, including a bag body and an opening and closing component disposed on the bag body. The bag body has a receiving cavity for accommodating external items, and one end of the bag body has an opening communicating with the receiving cavity. The opening and closing component is disposed inside the opening for opening and closing the opening. The opening and closing component includes a first sealing part and a second sealing part adapted to each other. The first sealing part and the second sealing part are respectively installed on opposite side walls of the opening of the bag body. After the first sealing part and the second sealing part are connected, the opening of the bag body is closed. This utility model simplifies the opening and closing operation by setting an opening and closing component, and the sealing performance is better than the folding seal of traditional silicone bags, ensuring that the items can be kept inside the bag and not affected by the outside world. Moreover, it eliminates the need for additional zipper sliders, saving production costs.

The utility model relates to a bed frame leg moving device. Comprising a lifting frame fixing piece, a bottom frame and a lifting structure. The lifting structure comprises a limiting piece, two bottom frame side plates and two lifting structural parts, the two bottom frame side plates are fixed to the bottom ends of the middles of the two transverse rods of the rectangular structural frame respectively, and the two lifting structural parts are symmetrically arranged on the two sides of the rectangular structural frame in the length direction. The device has the advantages of being novel in structure, simple in design and wide in application range, and has high market competitiveness. The lifting connecting frame is arranged on the inner side of the lifting supporting frame, the lifting connecting frame is rotatably connected with the lifting supporting frame, the top of the lifting connecting frame is rotatably connected with the lifting frame fixing piece, and the top of the lifting supporting frame is arranged in the two segmented sliding grooves of the bearing sliding groove in a sliding mode through a bearing assembly. Therefore, the structure is high in supporting performance and stable in function.