DEVICE TO GUIDE INCISIONS IN PENILE SURGERY

Abstract

The present invention relates to a device to guide incisions in penile surgery comprising an auxetic EVA sheet (1) that is fixed in the penile corpora cavernosa, said device having star-shaped perforations (2) that create a triangle rotated system, which allows to make specific micro incisions in the penile corpora cavernosa, generating simultaneous two-dimensional expansion of the tunica albuginea, providing a real increase in length and diameter (girth), in addition to correcting any other type of penile deformity, like penile curvature.

Claims

1. Device to guide incisions in penile surgery, said device being fixed in the penile corpora cavernosa with surgical thread stitches, and removed after corpora cavernosa microincisions, CHARACTERIZED in that it is constituted by an auxetic EVA sheet (1) having 1 mm thickness, with a size ranging from 12 cm×8 cm to 12 cm to 15 cm, with a plurality of star-shaped perforations (2) equidistant from each other, which create a triangle rotated system that allows simultaneous longitudinal and transversal expansion. The microincisions made through these perforations create the same system of rotating triangles in the corpora cavernosa, wherein, in the star-shaped holes (2) the value of (X) varies from 4 mm to 9 mm, and the value of the connection between the triangles (C) varies from 2 mm to 6 mm.

2. Device to guide incisions in penile surgery, according to claim 1, CHARACTERIZED in that the star-shaped micro incisions aligned in the corpora cavernosa cause simultaneous two-dimensional expansion of the tunica albuginea.

3. Device to guide incisions in penile surgery, according to claim 1, CHARACTERIZED in that the star-shaped micro incisions aligned in the corpora cavernosa cause correction of the penis uniplanar, biplanar and multiplanar curvatures, and the hourglass deformity.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0023] The characteristics, nature and advantages of this description will be more evident from the detailed description set out below when read in conjunction with the drawings, in which the same references refer to the same elements.

[0024] FIG. 1—illustrates the auxetic template, object of the present invention;

[0025] FIG. 2A—illustrates an enlarged view detailing the star-shaped perforation of the auxetic template;

[0026] FIG. 2B—illustrates an enlarged view detailing the final defect caused by the star-shaped perforation of the auxetic template;

[0027] FIG. 3—illustrates a detailed schematic view of the auxetic behavior created by rotating the equilateral triangles that make up the auxetic template;

[0028] FIG. 4A—illustrates a view of the circumferential application of the auxetic template in the corpora cavernosa of a penis to increase the penile length and girth;

[0029] FIG. 4B—illustrates a penis view of FIG. 4A after the micro incisions in the corpora cavernosa;

[0030] FIG. 5A—illustrates a view of the unilateral application of the auxetic template in the penis corpora cavernosa to correct dorsal curvature;

[0031] FIG. 5B—illustrates a penis view of FIG. 5A after making the micro incisions in the corpora cavernosa and its correction;

[0032] FIG. 6A—illustrates a lateral view of the unilateral application of the auxetic template in the penis corpora cavernosa to correct hourglass deformity and dorsal curvature;

[0033] FIG. 6B—illustrates a penis view of FIG. 6A after making the micro incisions in the corpora cavernosa and the correction of the deformities;

[0034] FIG. 7A—illustrates a view of the unilateral application of the auxetic template in the penis corpora cavernosa to correct a lateral curvature;

[0035] FIG. 7B—illustrates a penis view of FIG. 7A after making the micro incisions in the corpora cavernosa and correct the deformitie.

DETAILED DESCRIPTION OF THE INVENTION

[0036] In accordance with what the attached figures show, the present invention refers to a DEVICE TO GUIDE INCISIONS IN PENILE SURGERY comprising an EVA sheet (1) with auxetic property that is fixed in the penile corpora cavernosa with surgical thread stitches. The device allows guiding the surgeon to make star-shaped, auxetic micro incisions, aligned at specific points of the penile corpora cavernosa, generating simultaneous two-dimensional expansion of the tunica albuginea, providing a real increase in length and diameter (girth) and correcting any other type of penile deformity, such as penile curvature. After surgery, the auxetic EVA sheet (1) is removed from the corpora cavernosa.

[0037] Now we refer to FIG. 1, which illustrates the device that consists of an auxetic EVA sheet (1) with 1 mm thickness, with a size ranging from 12 cm×8 cm to 12 cm×15 cm, with a plurality of star-shaped perforations (2) equidistant from each other, which create a triangle rotated system that allows simultaneous longitudinal and transversal expansion. The microincisions made through these perforations create the same system of rotating triangles in the corpora cavernosa.

[0038] Now we refer to FIGS. 2A and 2B, which illustrate two factors that contribute to the tissue expansiveness and final size of the defect. In FIG. 2A some traction and, in FIG. 2B, the maximum traction can be observed in the tissue. If the incision size, that is, the star-shaped (X) cut (2) is very large, we may have a defect that needs to be closed by placing a graft and, if the size is too small, the rotation capacity of the triangles is reduced, thus decreasing the final area of the tissue expansion.

[0039] In addition, the degree of connection between the triangles (C) is another factor that alters the final result of tissue expansion and resistance to tension. If this value is too small, the tissue tears in (C), and if this value is high, it will be difficult to rotate the triangle and increase the tissue area.

[0040] Taking these factors into account, the value of (X) ranges from 4 mm to 9 mm, and the connection(C) ranges from 2 mm to 6 mm.

[0041] Now we refer to FIG. 3, which illustrates the behavior by rotating the equilateral triangles on the x and y axes of the auxetic EVA sheet (1), wherein the traction exerted by the EVA sheet (1) increases the angle (a) between the triangles, producing an open structure and, thus, a negative Poisson's Rate(PR) in the tunica albuginea. The PR is a mechanical property of the materials and is defined as the percentage reduction of the girth of the stretched material, divided by the percentage of gain in length.

[0042] Thus, through the star-shaped micro incisions obtained by the auxetic EVA sheet (1), it is possible to obtain a negative PR in the tunica albuginea and, consequently, a simultaneous two-dimensional expansion of the tissue, providing a real increase in length and girth (girth) and correcting any type of penile deformity, like penile curvature.

[0043] Now we refer to the other FIGS. 4A, 4B, 5A, 5B, 6A, 6B, 7A and 7B, which illustrate examples of penis, before and after, respectively, of the application of auxetic incisions in the corpora cavernosa, to correct penile deformities.

[0044] Those skilled in the art will easily understand that modifications can be made in the invention without departing from the concepts exposed in the description above. These modifications should be considered as included within the scope of the invention. Consequently, the particular embodiments described in detail above are merely illustrative and do not limit the scope of the invention, to which should be given the full extent of the attached claims and any and all equivalents thereof.