Biological patch cutter for cardiac surgery

Abstract

The invention discloses a biological patch cutter for cardiac surgery. The cutter comprises a base and a cutting knife cylinder, the base is of a round structure, two lower handles are fixed to the outer side of the base, the two lower handles are symmetrically around about the round of the base, a flange is fixed to the upper surface of each lower handle, and a cutting cavity is formed on the upper surface of the base. In a word, the cutter is reasonable in structural design, convenient to use, and capable of rapidly cutting biological patches in a different-radius manner, the edge of the cutbiological patches is smooth, and practicability is high.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a biological patch cutter for cardiac surgery. Background technique [0002] The use of biological patch technology to repair ventricular septal defect is one of the commonly used surgical methods in cardiac surgery. Its purpose is to reduce the blood shunt from the left ventricle to the right ventricle, reduce the pressure of the right ventricle, and finally completely occlude the interventricular septum. The existing technology mainly uses scissors during the operation to trim a patch that is much larger than the size of the ventricular septal defect to be slightly larger than the ventricular septal defect, and its shape can completely cover the ventricular septal defect. A circular hole, use the remaining patch material to trim a circular patch to completely cover the circular hole, and then suture the circular patch and the circular hole at four points: to...

AI Technical Summary

Problems solved by technology

The existing technology mainly uses scissors during the operation to trim a patch that is much larger than the size of the ventricular septal defect to be slightly larger than the ventricular septal defect, and its shape can completely cover the ventricular septal defect. A circular hole, use the remaining patch material to trim a circular patch to completely cover the circular hole, and then suture the circular patch and the circular hole at four points: top, bottom, left and right , suturing the entire ventricular septal patch to the ventricular septal defect, and making the circular patch face the left ventricle side; the above is the prior art, and the prior art has the following defects: (1), rough edges after trimming: the prior art By cutting a circular hole in the very center of the trimmed patch, use the remaining patch material to trim the circular patch so that it completely covers the circular hole, but the trimmed circular hole and the circular patch The edge is rough, when the blood passes through the round hole and pushes away the round patch to flow to the left ventricle, it is easy to form a thrombus attached to the wall and block the channel; (2), poor safety: the existing technology trims the patch to make a suitable size For biological mesh, the whole process of trimming and suturing to make biological mesh takes 20-30 minutes. Factors such as prolonged cardiac arrest and anesthesia will increase the risk of surgery. The entire trimming process requires fine manipulation, and prolonged trimming may cause severe Broken gloves increase the risk of intraoperative infection and injury to medical staff; in addition, the rough edges of the round hole and the round patch form a thrombus attached to the wall. When the embolus falls off to the right ventricle, it may cause pulmonary artery embolism. The left ventricle may embolize important organs such as the brain, liver, and kidney, seriously affecting life safety

Images