Pulmonary artery dilatation forceps

Abstract

The invention provides pulmonary artery dilatation forceps and belongs to the technical field of machinery. The problem of low precision of pulmonary artery dilatation existing in existing balloon ductal dilatation techniques can be solved. The dilatation forceps include a forceps handle and a forceps head with changeable diameter sizes; the forceps head includes a guiding base and multiple dilatation valves circumferentially arranged along the axis of the guiding base; one end of the guiding base is fixed on the other end face of a base tube; the dilatation valves are connected to the guidingbase through a guiding structure that can make the dilatation valves move in the radial direction of the guiding base; and mechanical reversing transmission structures connected to the other end of atransmission member are arranged between the multiple dilatation valves and the guiding base, so that the mechanical reversing transmission structures can make the multiple dilatation valves simultaneously move to a direction away from the axis of the guiding base when the transmission member is operated. Through the dilatation forceps, the adoption of pulmonary arteriotomy to treat pulmonary stenosis can be avoided, stepped dilatation can be realized by adopting the dilatation forceps, and the degree of each dilatation can be quantified.

Description

technical field [0001] The invention belongs to the technical field of medicine, and relates to a surgical instrument, in particular to a pulmonary artery dilation forceps. Background technique [0002] The incidence of pulmonary valve stenosis accounts for about 8% to 10% of congenital heart disease. Pulmonary artery stenosis is the most common with pure pulmonary valve stenosis, accounting for about 90%, that is, the three pulmonary valves are thickened and fused at the junction. It can be dome-shaped; in addition, the infundibulum is narrow, and the stenosis of the arterial trunk and its branches is rare. Pulmonary valve stenosis can exist alone or as a component of other cardiac malformations, such as tetralogy of Fallot, patent foramen ovale, etc. Depending on the pressure difference between the right ventricle and the pulmonary artery, pulmonary valve stenosis can be classified as mild, moderate, or severe. A pressure difference of more than 10 mmHg can be diagnosed ...

AI Technical Summary

Problems solved by technology

For the surgical treatment of pulmonary valve stenosis, pulmonary valvulotomy under cardiopulmonary bypass has made a great contribution; however, in actual operation, we found that it still has some shortcomings: 1. Pulmonary artery incision is required to increase the incision of large vessels 2. The incision and suture of the pulmonary artery, the separation of the stenosis of the valve adhesion, and the evaluation of the inner diameter of the annulus after treatment are all relatively high. Time-consuming, which prolongs the overall time of extracorporeal circulation; 3. It cannot be quantified at the first time when the pulmonary valve commissure is performed, and the inner diameter still needs to be measured later; 4. It must be performed under extracorporeal circulation

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