Gastrointestinal anastomat and degradable anastomosis material

Abstract

The gastrointestinal anastomat comprises a main body, the front end of the main body is provided with a spherical-crown-shaped nail abutting seat, the plane portion of the nail abutting seat corresponds to an anastomosis nail bin, the rear end of the main body is provided with a percussion handle and an adjusting knob of the handle, and the adjusting knob of the percussion handle corresponds to the anastomosis nail bin. The anastomosis nail bin is arranged on the circular ring face of the anastomosis nail bin, a nail cap is arranged in a cap hole in the plane of the nail abutting seat, the anastomosis nail is matched with the nail cap, the anastomosis nail comprises a nail crown, a nail body and a nail point which are fixedly connected in sequence, and the rack is arranged on the nail body. The nail cap comprises a buckling piece and a containing cavity, the buckling piece is arranged on the inner side of the annular nail cap, and the containing cavity is arranged below the nail cap. The gastrointestinal anastomat provided by the invention can adapt to patients with different gastrointestinal wall thicknesses and has universality, and the polylactic acid coating the anastomosis nail is good in puncture resistance and high in bonding strength with the magnesium alloy.

Description

technical field [0001] The invention belongs to the technical field of medical instruments for gastrointestinal surgery, in particular to a gastrointestinal stapler and a degradable anastomotic material. Background technique [0002] Gastrointestinal anastomosis is the most basic and common operation technique in abdominal surgery, and it is also an operation that is prone to postoperative complications. At present, manual silk thread anastomosis and stapler anastomosis are mainly used. Manual silk thread anastomosis has many disadvantages, and the operation is complicated and time-consuming. Therefore, the incidence of complications such as anastomotic leakage, bleeding, stenosis, and anastomotic inflammation remains high. Gastrointestinal stapler is a mechanical suturing device mainly used for the stomach and intestines. It is a medical device to replace traditional manual suture. Due to the development of modern technology and the improvement of manufacturing technology, ...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN103230289B discloses a gastrointestinal stapler. By adopting degradable staples and nail caps, no metal parts will be left in the patient's body. At the same time, the tips of the staples are small and cause little tissue damage. The matching structure of the stapler is simple and small, and will not cause blockage to the gastrointestinal tract. However, due to the different thickness of the gastrointestinal wall of patients, it is necessary to choose the length of the staples, which is not universal.

[0006] At the same time, most of the degradable materials used in the prior art are polylactic acid. When it is coated on the magnesium alloy staple, because the polylactic acid material has poor toughness and is not resistant to puncture, it is applied to the staple. When the force is applied, the magnesium alloy inside can pierce the polylactic acid, resulting in the exposure of the magnesium alloy, which affects the overall performance of the material. Moreover, the bonding strength between the polylactic acid and the magnesium alloy is not high, and slippage is easy to occur, which affects the stability of the material.

Images