Arc type nail for surgical binding instrument

Abstract

The invention provides an arc-shaped nail which is used for a surgical binding instrument, including a nail crown and a nail foot, at least one part of the nail crown part or the nail foot part takes a shape of arc; the plane which is perpendicular to the direction of the nail foot is a reference plane, the included angle of the plane on the nail crown where the arc shape is arranged and the reference plane is 0 degree to 180 degrees; the radian of the arc shape on the nail crown is one sixth of Pi to Pi; and two or more arc shapes on the nail crown are connected to form a curve. When in specific surgical application, the arc-shaped nail is stored in a nail slot of a nail chamber of the binding instrument, when the tissues to be inoculated are in place, the firing is implemented by a firing mechanism of the binding instrument, the arc-shaped nails which are pre-stored in various nail slots of the interior of the nail chamber are divergent to the outside along the axial direction, so as to be matched with a nail forming slot to carry out the anastomosis of two tissues. The diameter of an anastomosis ring which is formed by the arc-shaped nail of the invention is bigger than that of the anastomosis ring which is formed by the linear nail, which is not only easy to remove the apparatus after the operation, but is more in line with the physiological shapes of tissues; furthermore, the invention can be conductive to postoperative healing and can improve surgical effect greatly.

Description

technical field [0001] The invention relates to a staple used in surgical operations, in particular to an arc-shaped staple used in a surgical stapler, and belongs to the technical field of medical instruments. Background technique [0002] A kind of medical instrument—surgical stapler is often used in surgical anastomosis of physiological tissues such as esophagus, stomach, and intestinal tract. The anastomosis methods include end-to-end anastomosis, end-to-side anastomosis, and side-to-side anastomosis. The time spent by the surgeon on the operating table is greatly reduced, which improves the doctor's work efficiency and further ensures the success rate of the operation. [0003] The surgical stapler adopts the principle of a stapler, puts the staples into the staple magazine in the nail head assembly, puts the tissue to be anastomosed between the nail anvil assembly and the nail head assembly, and adjusts the distance between the nail anvil assembly and the nail head ass...

AI Technical Summary

Problems solved by technology

Such an arrangement can basically ensure that the contents of the tissue do not leak, but such a structure is not a perfect structure. First, in order to adapt to the physiological shape of the circular tubular tissue, a relatively circular anastomotic ring is formed, and the length of the nails must be very small. It is necessary to arrange a large number of small linear nails to form an approximately circular anastomotic ring. Each small linear nail must be provided with an independent nail hole and nail forming groove, which is not only difficult to process, but also not conducive to saving materials. higher cost

Now the operation price of the binding instrument is not widely accepted for ordinary patients, and the patients who should use the binding instrument are unable to use it, which restricts the promotion and development of the binding instrument

[0005] In addition, after the existing staples are used for binding, it is not easy for the circular anvil to withdraw from the approximately circular anastomotic ring. When withdrawing, it is easy to tear the anastomotic ring or damage the molding of part of the staples. Once the anastomotic ring is damaged , will cause massive bleeding, resulting in anastomotic leakage, greatly increasing the difficulty of the doctor's remedial operation, leading to the failure of the operation, and in severe cases, it will bring life danger to the patient

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