SU676285A1 - Prosthesis for closing ventricular septal defect - Google Patents

Description

one

This invention relates to the field of medical technology, in particular cardiac surgery.

A known prosthesis for closing a defect is predominantly in the interventricular septum of the heart, which contains an elastic element 1 reinforced along the edges.

A disadvantage of the design of the known prosthesis is that the open edge completely overlaps the opening of the defect in the cavity of the left ventricle and thereby eliminates visual monitoring of the installation and bringing the base spring to a working state.

The purpose of the invention is to provide visual control during the operation.

This goal is achieved in that the outer edge reinforcement is made in the form of a flat spring with a mechanism for compression.

FIG. 1 shows the proposed prosthesis, general view; in fig. Figures 2 and 3 illustrate the placement of a prosthesis on the heart septum.

The outer edge 1 of the elastic bag 2 is provided with a flat spring 3. The middle narrowed part 4 of the bag 2 is made with a diameter half the diameter of edge 1. Along the edge 5 of the bag 2, the spring 6 is installed parallel to the edge 1. In working condition, the elasticity of springs 3 and 6 ensures

the same tension of the outer edge 1 and the inner edge 5. The flat springs 3 and 6 are provided with two diametrically spaced depressions 7. Holding the spring 6 in the compressed state is provided with a thread 8, which fixes the spring 6 with the help of tube 9. Compression of the spring 3 edge 1 has The thread 10. The springs 3 and 6 are placed in the prosthesis in such a way that their directions are depressed mutually perpendicular.

The closure of the ventricular septal heart defect 11 with the prosthesis is carried out as follows. The pre-installed and fixed spring 6 along the recesses 7 is wrapped around the thread 8 and is conducted inside the tube 9. Then the tube 9 is inserted inside the bag 2 (Fig. 2). By tightening the ends of the yarn 8, the spring 6 is compressed, reducing the dimensions of the edge 5 to the size of the middle tapered part 4 of the bag 2. Then, by tensioning the thread 10, the spring 3 is pressed against the iron edge 1 of the bag 2 and securely connect the thread. In this state, for example, using tweezers, the edge 5 with the compressed spring 6 is led into the left ventricular cavity, placing the prosthesis on the interventricular septum 11 in the optimal position (Fig. 2). Then thread 8 is released and, due to the elasticity of the spring 6, the edge 5 is pulled over the partition

11 (Fig. 3). Since the lumen remains between the edge of the defect and the edge 1, it is possible to visually monitor the installation of the prosthesis and the expansion of the spring 6 in the cavity of the left ventricle. After that, the thread 10 is cut and, due to the elasticity of the spring 3, the edge 1 is tensioned to the size of the edge 5, fixing the prosthesis on the septum 11. The tube 9 together with the threads 8 and 10 is taken out of the bag 2.

Thus, the proposed prosthesis for closing the ventricular septal defect of the heart, due to the special design, allows to increase the reliability of fixation of the prosthesis - by setting it in the optimal position relative to the defect, which significantly simplifies the work of the surgeon and

increases efficacy of surgical intervention.

Claims (1)

Invention Formula The prosthesis for closing the ventricular septal defect of the heart, containing an elastic element reinforced at the edges, is distinguished by the fact that in order to provide visual control during the operation, the reinforcement of the outer edge is filled in the form of a flat spring with a mechanism for compression. Sources of information taken into account in the examination 1. Application number 2445236 / 28-13, cl. A 61M 1/03, 1977, according to which a decision was made to issue an author's certificate. 7 /