Device for rapid liver transplantation by combining glue and magnetism with intravascular stent and using method of device

Abstract

The invention relates to a device for rapid liver transplantation by combining glue and magnetism with an intravascular stent and a using method of the device. The device comprises the intravascular stent and an extravascular magnetic gel strip, wherein needle pricks are arranged in the middle of the outer wall of the intravascular stent, the extravascular magnetic gel strip is arranged on the outer side of the intravascular stent, magnetic particles are arranged in the extravascular magnetic gel strip, and the intravascular stent is an expandable stent. The extravascular magnetic gel strip ismade of polyacrylamide-alginate double-network gel, and the magnetic particles are made of nanometer ferroferric oxide. The device has the characteristics of being quick, safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for rapid liver transplantation with colloidal magnets combined with vascular stents and a method for using the same. Background technique [0002] In the process of liver transplantation, the implantation of the donor liver needs to complete the reconstruction of the blood vessels around the liver (superior and superior hepatic vena cava, portal vein, hepatic artery, etc.), and the speed of vascular reconstruction determines the time of blood flow occlusion on the recipient side, that is, no The hepatic stage time, speed and quality of revascularization affect the prognosis after liver transplantation. At present, the vascular reconstruction during liver transplantation is mainly manual suturing, but the manual suturing operation is cumbersome, time-consuming, and has a long learning curve. Ischemia or congestion time, such as lower extremity conges...

AI Technical Summary

Problems solved by technology

At present, the vascular reconstruction during liver transplantation is mainly manual suturing, but the manual suturing operation is cumbersome, time-consuming, and has a long learning curve. Ischemia or congestion time, such as lower extremity congestion, kidney congestion, and gastrointestinal congestion, etc., which leads to a high incidence of postoperative complications

The use of magnetic stapler for rapid vascular reconstruction can significantly shorten the time of vascular anastomosis and reduce the difficulty of anastomosis. However, for the superior and superior hepatic vena cava, because its diameter is about 25mm, the length of the blood vessel that can be dissociated is only about 20mm. After vascular anastomosis, the magnetic anastomosis ring is close to the diaphragm. Larger magnetic anastomosis rings may rub against the diaphragm with the beating of the heart and cause adverse effects, so they have not been widely used.

In recent years, the anastomotic rings that rely on mechanical force to achieve vascular anastomosis have also made some progress, but most of them have complex structures and difficult operations, and are not suitable for the operation scene of the superior and inferior hepatic vena cava

For the anastomosis of superior and inferior hepatic vena cava, there are still no mature anastomotic instruments available

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