3results about How to "Small size when folded" patented technology

This utility model relates to an expandable folding trailer, comprising a trailer frame, an extension frame, and a stabilizing frame. The trailer frame includes a first column, a second column, a third column, a fourth column, a folding mechanism, and a base support mechanism; the four columns are arranged in a rectangular interval, with their lower ends connected to the base support mechanism; folding mechanisms are provided between the first and second columns, between the third and fourth columns, and between the fourth column and the first column. The lower end of the extension frame is rotatably connected to the lower ends of the second and third columns at a limited angle, and the upper end of the extension frame is detachably connected to the upper ends of the second and third columns. The stabilizing frame includes a telescopic rod assembly and a folding rod assembly, with both ends of the telescopic rod assembly and the folding rod assembly connected to the second and third columns, respectively. The stabilizing frame provides sufficient lateral tensile and support force to the second and third columns, preventing a decrease in trailer frame stability after the extension frame is folded down, thus improving the strength of the trailer frame.

The utility model relates to a steel beam stacking supporting frame which comprises a first supporting rod, a second supporting rod, a third supporting rod and a supporting piece. One side of the top of the first supporting rod is hinged to one end side of the second supporting rod, the other end of the second supporting rod is hinged to one end side of the third supporting rod relative to the side of the first supporting rod, a mounting part is arranged at the bottom of the first supporting rod, and the other end of the third supporting rod is detachably connected with the mounting part; the supporting piece is hinged to the side face, hinged to the second supporting rod, of the first supporting rod and / or the opposite side face, a limiting piece is arranged on the supporting piece, and the angle of the supporting piece relative to the first supporting rod can be fixed through the limiting piece. The utility model has the advantages of convenient installation and disassembly, wide application range, small volume in a folded state, convenient transportation and high turnover rate.

This invention belongs to the field of surgical instrument technology and discloses a disposable sterile specimen retrieval bag with spill prevention, comprising a cannula, a push rod, and a specimen bag. The push rod is slidably connected inside the cannula, and the specimen bag is connected to one end of the push rod. The specimen bag includes a support strap with several ratchet teeth on one side. One end of the support strap is connected to a buckle, and the buckle has protrusions that match the ratchet teeth. The other end of the support strap passes through the buckle. The support strap and the buckle form an elastic annular support ring. A hollow sleeve is fitted onto the annular support ring, with one end connected to the end of the support strap and the other end connected to the buckle. The hollow sleeve is connected to the retrieval bag body. This invention solves the technical problems of existing specimen bags having limited options for aperture specifications, being easily damaged, and having a semi-closed opening that hinders the smooth placement of specimens.