Structural features of stapler
The stapler comprises a shell, a central rod and a push tube. The central rod is arranged in the push tube. The front end of the central rod is equipped with a nail cover, and the rear end is connected with the adjusting knob at the end of the shell through a screw. An excitation handle is arranged on the outer surface of the shell, and the excitation handle is movably connected with the shell through a hinge. The stapler is characterized in that: a connecting rod mechanism is arranged in the stapler, and the three connecting rods are respectively connected with the excitation handle, the inner wall of the shell and the push tube, One end of the three connecting rods is connected to the same movable hinge; The three connecting rods of the linkage mechanism include a power rod, a supporting rod and a moving rod; The power rod is hinged with the excitation handle; The support rod and the shell are connected by a movable hinge; The moving rod and the push tube are connected by a movable hinge. The stapler of the utility model has the advantages of simple structure, convenient operation and strong stability.
The connecting structure between the push rod and the annular knife of the digestive tract stapler comprises a push rod and an annular knife fixedly connected with the push rod. A plurality of nail pushing pieces arranged along the circumference are arranged on the outside of the annular knife. One end of the annular knife is embedded in the push rod. Because one end of the annular knife is embedded in the push rod, the concentricity of the annular knife and the push rod is high. In the process of cutting tissue, the annular knife can sit in the middle smoothly, The success rate of operation was high.
The nail pushing device of the digestive tract stapler comprises a nail bin body 6 and a nail pushing sheet body 1. The two ends of the first side wall 7 of the nail bin hole 5 are respectively provided with a first guide wall 9, and the two ends of the second side wall 8 are respectively provided with a second guide wall 10. The first guide wall 9 and the second guide wall 10 at the same end meet and arc transition at the intersection. The first guide wall 9 and the second guide wall 10 at the same end are arranged symmetrically; When the geometric dimension of the staple changes slightly, it can also be stably located in the staple bin hole by the function of the guide wall, so as to ensure that the width of the push plate is greater than the width of the staple crown of the staple, so that the staple can be well formed.
The connecting structure between the puncture cone and the nail base of the digestive tract stapler comprises a nail base and a puncture cone. The nail base is fixed with a snap spring, the puncture cone is inserted between the snap springs, and the snap spring clamps the puncture cone. Depending on the spring clamping force of the snap spring, the nail base can be reliably connected or separated from the puncture cone, which is safe to use and convenient to install.
The two speed adjusting device of the digestive tract stapler comprises an stapler body, a knob body rotatably connected with the stapler body, and a screw threaded with the knob body. The screw is inserted into the inner cavity of the stapler body, the front of the screw is connected with the central rod in the inner cavity of the stapler body, and the screw has a connected first thread section and a second thread section, The pitch of the first thread section is greater than that of the second thread section. It can quickly shorten the distance between the nail bin and the nail base. After the closing, the second thread segment slides relative to the knob body, which slows down the movement speed of the screw when the knob is rotated, which is conducive to the operation of the digestive tract.
Post time: Jun-20-2022
