Radial magnetizing anastomat for non-invasive digestive tract reconstruction

Abstract

Disclosed is a radial magnetizing anastomat for non-invasive digestive tract reconstruction. The radial magnetizing anastomat comprises an anastomosis part and an auxiliary part, wherein the anastomosis part is composed of two sets of anastomosis magnets; each set of anastomosis magnets is composed of at least three radial magnetizing cylindrical magnets; the auxiliary part comprises a J-shaped tube and a guide wire; the guide wire is used for leading the J-shaped tube into a to-be-anastomosed position; the J-shaped tube is composed of a tubular part and a curved part; the tubular part is used for feeding the magnets, and the axial direction of the magnets is always perpendicular to the axial direction of the tubular part; the curved part is connected to the tail end of the tubular part and is bent inwards; and the magnets which are guided out of the tubular part attract one another in the side direction and are connected end to end to form a ring. The radial magnetizing anastomat is easy for minimally invasive implantation and does not cause anastomotic stoma stenosis.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a radial magnetic stapler for non-invasive digestive tract reconstruction. Background technique [0002] Gastric outflow tract obstruction is a common complication of many advanced tumors, such as pancreatic head cancer, duodenal cancer, gallbladder cancer, gastric cancer, etc. In order to solve the feeding problem of patients with gastric outflow tract obstruction, metal stents are usually inserted into the stenosis under endoscopy in clinical practice, which is simple to operate, less traumatic, has a low incidence of complications, and has a definite curative effect. However, bare metal stents are often used clinically, and tissue growth into the stent may cause stent blockage and require repeated placement, especially when the cause of the stenosis is malignant growth, which brings more pain to the patient. Based on the adjacent anatomical structure between the poste...

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Problems solved by technology

[0004] However, because most of the magnetic anastomosis staplers are circular and have a large volume, there are a few case reports in the world for endoscopic palliative magnetic anastomosis of the gastrointestinal tract.

Machytka et al. designed a self-assembled magnetic stapler that can be transformed between linear and circular by arranging several trapezoidal magnets in the first position. However, the maintenance of the circular structure mainly depends on the optimization of the mechanical structure, which increases the complexity of the stapler. Possibility of mechanical failure

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