Skin anastomat (stitching instrument) with arc-shaped fastening mechanism

Abstract

A skin anastomat (stitching instrument) with an arc-shaped fastening mechanism consists of a needle box component, an upper handle and a lower handle. The needle box component comprises a first outer bead and a second outer bead which are arranged on the needle box component, a first mounting hole is further arranged on the needle box component, a second mounting hole is arranged on the lower handle, the first mounting hole is fixedly connected with the second mounting hole, a first groove and a second groove are arranged on the bottom end side of the upper handle, the first groove and the first outer bead are arranged fittingly mutually, and the second groove and the second outer bead are arranged fittingly mutually; the first outer bead is longer than the second outer bead; an included angle between the first outer bead and the horizontal plane is 45 degrees while an included angle between the second outer bead and the horizontal plane is also 45 degrees; and during assembly, the first outer bead of the component is aligned with the corresponding first groove of the upper handle, then the first outer bead is pushed into the upper handle by little force, the second outer bead is squeezed by the action force to expand the upper handle so as to slide in the second groove corresponding to the second outer bead, and accordingly assembly is finished. The skin anastomat (stitching instrument) has the advantages of simple structure and capability of saving production cost.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a skin anastomotic (suturing) stapler with an arc-shaped interlocking mechanism. Background technique [0002] At present, the design structure of the upper and lower ultrasonic welding assembly of the needle box handle is widely used in skin suturing devices. During the production of skin suturing devices for many years, it has been found that there are many disadvantages in the assembly of this structure. The main defects are: [0003] 1. The product function is unstable [0004] The upper and lower welding of the needle box handle is affected by the change of welding parameters and the influence of unstable welding pressure, which causes the relative position displacement of the needle box; the position displacement changes the size of the front and rear fit between the needle box and the handle, which in turn affects the matching position relationship between other parts, mak...

AI Technical Summary

Problems solved by technology

[0004] The upper and lower welding of the needle box handle is affected by the change of welding parameters and the influence of unstable welding pressure, which causes the relative position displacement of the needle box; the position displacement changes the size of the front and rear fit between the needle box and the handle, which in turn affects the matching position relationship between other parts, making the skin The function of the suturing device fluctuates greatly, and even waste products appear; the needle press plate equipped in the handle cannot accurately press the suturing needle, causing the skin suturing device to fail to press the needle, pinch the needle, and touch the second needle;

[0005] Welding high-frequency vibration force and inaccurate mold design, there is a gap in the part clamping position, and the welding wire melts, causing uneven force on the needle box. After welding, the arrangement of suture needles in the needle box is not smooth, causing the skin suturing device to appear non-moving needles and needles to tilt Phenomenon, the product function is unstable;

[0006] The fluctuation of welding parameters affects the welding that is prone to false appearance, and the welding is not firm, which will cause the random parts of the skin suturing device to come off as a whole, resulting in serious medical accidents

[0007] 2. Product appearance defects

[0008] The control of the welding wire is closely related to the material and process parameters (current, voltage, pressure, etc.). If the welding is too heavy, the welding wire will be flawed, and if the welding is too light, the welding will not be firm.

[0009] 3. Waste of time

[0012] Welding is a destructive process in the production process, and it cannot be reworked after welding, and defective products can only be scrapped, resulting in a high scrap rate

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