SU405234A1 - Matrix for suturing surgical apparatus - Google Patents

Description

(54) MATRIX TO BENDING SURGICAL SURFACE

one

This invention relates to medical hardware.

Matrices for surgical stapling apparatus are known, each containing two wells for bending one U-shaped bracket, each of which has a bottom, side walls, inlet and outlet portions. In the longitudinal section, the inlet and outlet portions of the wells are formed either by different radii or inclined planes and matching radii. In a cross section, the wells may have different shapes, for example, radius. The holes for the bend of the bracket in the known matrices are located on the same line, i.e. the longitudinal axes of the holes coincide. Moreover, the longitudinal axis of the holes coincides with the longitudinal axis of the brackets located in the magazine part of the apparatus, and the width of the holes throughout the cross section is the same regardless of the shape of these sections.

A significant disadvantage of matrices with such holes is that, at small piercing gaps, the ends of the legs of the bracket meet and abut against the back of the bracket.

2

The shape of the bracket after the bend, i, e. When the legs of the bracket meet with the back, determines for each particular size: the measure of the brackets is the minimum possible gap of the piercing. Further reduction of the gap is unacceptable, because the bracket, after its legs met and went to the back, begins to acquire an irregular shape, its width increases compared to the initial one, the bracket seems to flatten; in other cases, buckling of the backs of the brackets is observed, and chaotic bending of the ends of the legs with their direction inside the fabric. Such bending of the brackets is unacceptable, since the fabric is significantly injured during this, and the seam does not ensure tightness.

Thus, the known matrices for the bend of the staples in a B-shaped form provide for 0t stitching with brackets of one type only in a narrow range of tissue thicknesses. At the same time, expanding the range of working clearances for each size bracket, in which the stitch shapes are suitable for sewing fabrics, is -i

This is one of the most important tasks, since the surgeon cannot predict in advance the thickness of the tissues that will need to be stitched and, therefore, if the device works with several sizes of brackets, it is impossible to determine in advance what size of brackets the magazine should be charged. If the surgeon stitches the fabric with staples that are not suitable in size, the quality of the suture decreases sharply or the suture is generally of poor quality.

The aim of the invention is to create such a matrix, which will provide a significant increase in the gap range of stitching with brackets of any size when they are bent in a B-shape, as well as obtaining stable stitch shapes at small gaps and increasing the density and tightness of the seam with minimal trauma to the fabric. brackets.

This is achieved by the fact that in the proposed matrix the longitudinal axes of the holes are located at a certain angle to the longitudinal axis of the seam, and the input parts of the holes are located on this axis of the seam, and the output from different sides of it is Yeshi from 0.5 to 1 diameter of the bracket.

FIG. Figure 1 shows schematically l Nki with a flat bottom of the proposed matrix, top view; FIG. 2 is a cross-sectional view along the inlet part A-A (the inlet part of the wells) in FIG. one; in fig. 3 is a cross-section along BB (output portion of the wells) in FIG. one; in fig. 4 - wells with a rounded bottom, top view; in fig. 5 is a cross-section along bb (input part of the wells) on. four; in fig. 6 is a cross-section along G-D (output portion of the wells) in FIG. four; in fig. 7 - bracket after its deformation.

The proposed matrix contains two wells each to bend one bracket into a B-shape. Each hole is designed to bend one leg of the bracket. The entrance and exit parts of each individual well B of the section along its longitudinal axis can be formed either by different radii or inclined planes and conjugate radii, i.e., the moon shape in this cross section is also the same as in the known matrices.

The longitudinal axis D-D of each well is located at a certain angle to the longitudinal axis E-E, a seam or, which is the same, to the longitudinal axis of the back of the bracket, with the intersection point To the longitudinal axis of the well with the beginning of its entrance part located on the longitudinal axis of the seam and the point M of intersection of the longitudinal axis of the well with the end of the exit part is separated from the center line of the seam by 0.5-1 of the diameter of the bracket, which allows the end of the leg of the bracket to pass when it bends near the back of the bracket.

Another feature of the holes is the location of the output parts of them along the side of the longitudinal axis of the seam, which eliminates the possibility of meeting the ends of the legs and gives greater stability to the bracket when it is bent (the bracket cannot fall onto one side).

In order to ensure that the ends of the legs of the brackets are accurately directed from different sides of the line of the bracket when they are bent, each well (as viewed from above) has a trapezoidal shape, the width of the input part of the hole being 2-4 diameters of the bracket, i.e., in cross sections, regardless of their shape, the width of the wells decreases from: the entrance to the exit.

This form of the matrix allows for the production of crosslinking of thin fabrics with small gaps, to obtain a tight and tight seam, since the legs of the bracket after piercing, in the process of bending into the B-shape, are forcibly separated by holes in different directions from the back of the bracket and, i having met the butt of the pusher, it is easy to glide over it. Due to this, the clearance of the bracket is significantly reduced in comparison with the clearance obtained on the known matrices, where the marginal minimum clearance is limited by connecting the ends of the legs to each other and resting them in the back of the bracket.

Subject invention

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A matrix for suturing surgical apparatus, each containing two wells for bending one U-shaped bracket, each of which has a bottom, side walls, inlet and outlet parts, so as to increase the range of workers stitching gaps with brackets of any size when they are bent into the V-shape, obtaining stable stitches at small gaps, increasing the density and tightness of the seam, the longitudinal axis of the holes are located at a certain angle to the longitudinal axis of the seam, and the input parts of the holes are located on this axis of the seam,and the weekend - from different sides from it at a distance of from 0.5 to 1 diameter of the bracket.

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