RETRACTOR DEVICE FOR BREAST RECONSTRUCTION SURGERY

Abstract

This application concerns a retractor device for breast reconstruction surgery. Specifically, the present patent application relates to a retractor type medical device which entails the effective exposure and visibility of the breast pocket and, at the same time, does not compromise the integrity of the subcutaneous flap, resulting in a positive outcome of the breast reconstruction procedure generally, but not exclusively, performed using a prepectoral (or sub-cutaneous) acellular biological matrix.

Claims

1) Retractor device (9) with at least one handle (3) with longitudinal development between an upper end (1.1) and a lower end (3.1) and with at least one offshoot (8) between a free end (6) and an opposite end (4), called retractor device (9), characterized by the fact that it is formed as a continuous surface, said continuous surface being formed by at least three distinct sections (s1, s2, s3), joined seamlessly.

2) The device as in claim 1 characterized by the fact that the first section (s1) consists of at least one offshoot (8) and takes the form of a convex figure between the two ends (6,4) of the offshoot (8).

3) The device as in claim 1 characterized by the fact that the second section (s2) is positioned between at least one offshoot (8) and at least one handle (3) and takes the form of a concave figure between the end (4) of at least one offshoot (8) and the lower end (3.1) of at least one handle (3).

4) The device as in claim 1 characterised by the fact that the third section (s3) consists of the handle (3) and takes the form of a concave figure between a lower end (3.1) and an upper end (1.1) of at least one handle (3).

5) The device as in claim 1 characterized by the fact of providing for a fourth section (s4) consisting of a convex figure (2) between the upper end (1.1) of the handle (3) and a free end (1).

6) The device as in claim 5 characterized by the fact that the free end (1) is blunt.

7) The device as in claim 1 characterized by the fact that the offshoot (8) has a through opening (7) that extends longitudinally between the free end (6) and the opposite end (4).

8) The device as in claim 1 characterized by the fact of consisting of a pair of continuous surfaces, each of which is formed of at least three distinct sections (s1, s2, s3 and s1′,s2′,s3′).

9) The device as in claim 1 characterized by the fact that each first section (s1,s1′) is joined seamlessly with each second section (s2,s2′) and each second section (s2,s2′) is joined seamlessly with each third section (s3,s3′).

10) The device as in claim 1 characterized by the fact that each first section (s1,s1′) consists of an offshoot (8a,8b) and takes the form of a convex figure between the two ends (6a,4a) of the offshoot (8a,8b).

11) The device as in claim 1 characterized by the fact that each second section (s2,s2′) is positioned between each offshoot (8a,8b) and each handle (3a,3b) takes the form of a concave figure between the end (4a,4b) of each offshoot (8a,8b) and the lower end (3.1, 3.1′) of each handle (3a,3b).

12) The device as in claim 1 characterized by the fact that each second section (s2,s2′) is positioned between each offshoot (8a,8b) and each handle (3a,3b) takes the form of a concave figure between the end (4a,4b) of each offshoot (8a,8b) and the lower end (3.1, 3.1′) of each handle (3a,3b).

13) The device as in claim 1 characterized by the fact that each third section (s3,s3′) consists of the handle (3a,3b) and takes the form of a concave figure between a lower end (3.1, 3.1′) and an upper end (1.1, 1.1′) of each handle (3a,3b).

14) The device as in claim 1 characterized by the fact that the pair of offshoots (8a,8b) is joined together by means of a joint element (10), preferably but not exclusively of the through screw type.

Description

[0023] Further characteristics and advantages of the invention will become more apparent from the detailed description of a specific but not exclusive embodiment, as illustrated in the accompanying drawings, by way of example and not exhaustive, wherein:

[0024] Table 1

[0025] FIG. 1: shows a view of the device subject of this present patent application

[0026] Table 2

[0027] FIG. 2: provides a view of the invention in a preferred initial embodiment;

[0028] FIG. 3 provides a side view of the invention in a preferred initial embodiment

[0029] Table 3

[0030] FIG. 4: provides a front view of the invention in a preferred second embodiment;

[0031] FIG. 5: provides a side view of the invention in a preferred second embodiment;

[0032] Table 4

[0033] FIG. 6: provides a side view of the invention in the closed position, in a preferred third embodiment;

[0034] FIG. 7: provides a side view of the invention in the open position, in a preferred third embodiment;

[0035] Table 5

[0036] FIG. 8 shows the invention in a preferred initial embodiment during use by the operator.

[0037] Table 6

[0038] FIG. 9 shows a representation of the extraction force and resistance.

[0039] As illustrated by the appended FIGS. 1, 2, 3, 4, 5, 6, 7, 8 and 9), the invention subject of the present patent application consists of a retractor type device (9) equipped with at least one handle member (3) and at least one blade (8).

[0040] More specifically, the handle member (3), of which there is at least one, develops longitudinally between an upper end (1.1) and a lower end (3.1), and the blade (8) is between a free end (6) and an opposite end (4).

[0041] As evident from the appended FIGS. 1, 2, 3, 4, 5, 6, 7, 8 and 9), and regardless of the preferred but not exclusive embodiments described below, the retractor device (9) in this patent application is formed by a continuous surface, this continuous surface being formed by at least three distinct sections (s1, s2, s3) associated seamlessly with one another.

[0042] More specifically, the first section (s1) consists of at least one blade (8) which is convex in shape between the two ends (6.4) of the blade (8); the second section (s2) is positioned between the blade (8); the second section (s2) is positioned between

[0043] at least one blade (8) and at least one handle member (3) and is concave in shape between the end (4) of at least one blade (8) and the lower end (3.1) of the, at least one, handle member (3).

[0044] The third section (s3) consists of the handle member (3) and is concave in shape between a lower end (3.1) an upper end (1.1) of the, at least one, handle member (3).

[0045] In a preferred, but not exclusive, initial embodiment (Table 2—FIG. 2 and FIG. 3), the invention subject of this patent application consists of a retractor type device (9) equipped with at least one handle member (3) and at least one blade (8).

[0046] More specifically, the handle member (3) develops longitudinally between an upper end (1.1) and a lower end (3.1), and the blade (8) is between a free end (6) and an opposite end (4).

[0047] As is evident from FIGS. 2 and 3, the retractor device (9), subject of this patent application, is formed by a continuous surface, this continuous surface being formed by at least four distinct sections (s1, s2, s3, s4) associated seamlessly with one another.

[0048] More specifically, the first section (s1) consists of the branch (8) which is convex in shape between the two ends (6.4) of the blade (8); the second section (s2) is positioned between the blade (8) and the handle member (3) and presents as a concave shape between the end (4) of the blade (8) and the lower end (3.1) of the handle member (3).

[0049] The third section (s3) consists of the handle member (3) and is concave in shape between a lower end (3.1) an upper end (1.1) of the, at least one, handle member (3).

[0050] The fourth section (s4) consists of a convex shape (2) between the upper end (1.1) of the handle member (3) and a free end (1). In a preferred, but not exclusive, embodiment, the free end (1) is chamfered.

[0051] In a preferred, but not exclusive, second embodiment (Table 3—FIG. 4 and FIG. 5), the invention subject of this patent application consists of a retractor type device (9) equipped with at least one handle member (3) and at least one blade (8).

[0052] More specifically, the handle member (3) develops longitudinally between an upper end (1.1) and a lower end (3.1), and the blade (8) is between a free end (6) and an opposite end (4).

[0053] As is evident from FIGS. 2, 4 and 5, the retractor device (9), subject of this patent application, is formed by a single continuous surface, this single continuous surface being formed by at least four distinct sections (s1, s2, s3, s4) associated seamlessly with one another.

[0054] More specifically, the first section (s1) consists of the branch (8) which is convex in shape between the two ends (6.4) of the blade (8); the second section (s2) is positioned between the blade (8) and the handle member (3) and presents as a concave shape between the end (4) of the blade (8) and the lower end (3.1) of the handle member (3).

[0055] The third section (s3) consists of the handle member (3) and is concave in shape between a lower end (3.1) an upper end (1.1) of the, at least one, handle member (3).

[0056] The fourth section (s4) consists of a convex shape (2) between the upper end (1.1) of the handle member (3) and a free end (1). In a preferred, but not exclusive, embodiment, the free end (1) is chamfered.

[0057] As is evident in FIGS. 4 and 5, the blade (8) has a cut-out (7) which develops longitudinally between the free end (6) and the end opposite (4).

[0058] In a preferred, but not exclusive, third embodiment (Table 4—FIG. 6 and FIG. 7), the invention subject of this patent application consists of a retractor type device (9) equipped with a pair of handle member (3a, 3b) and pair of blades (8a, 8b).

[0059] As is evident from FIGS. 1, 6 and 7, the retractor device (9), subject of this patent application, is formed by a pair of continuous surfaces, each of which is formed by at least three distinct sections (s1, s2, s3, and s1′, s2′, s3′).

[0060] Specifically, each first section (s1, s1′) is seamlessly associated with each second section (s2, s2′) and each second section (s2, s2′) is seamlessly associated with each third section (s3, s3′).

[0061] More specifically, each first section (s1, s1′) consists of one blade (8a,8b) which is convex in shape between the two

[0062] ends (6a, 4a) of the blade (8a, 8b); each second section (s2, s2′) is positioned between each blade (8a, 8b) and each handle member (3a, 3b) which is concave in shape between the end (4a, 4b) of each blade (8a, 8b) and the lower end (3.1, 3.1′) of each handle member (3a, 3b). Each third section (s3, s3′) consists of the handle member (3a, 3b) and is concave in shape between a lower end (3.1, 3.1′) and upper end (1.1, 1.1′) of each handle member (3a, 3b).

[0063] With reference to FIGS. 6 and 7, the pair of blades (8a, 8b) is mutually associated by means of a coupling element (10), preferably but not exclusively a through screw, to allow the blades to close or open (8a, 8b) due to the corresponding handle members (3a, 3b) opening or closing (3a, 3b).

[0064] With reference to the embodiment shown in FIGS. 6 and 7, when the handle members (3a, 3b) are in the open position, the corresponding blades (8a, 8b) come close and, vice versa, with the handle members (3a, 3b) in the closed position the corresponding blades (8a, 8b) open. Regardless of the preferential embodiments described herein, and without modifying the essential characteristic aspects, the curvature of at least one blade (8) may be the result of several radii of curvature supporting the curvature of the interior chamber of the breast pocket.

[0065] Furthermore, regardless of the preferred embodiments described herein, and without modifying the essential characteristic aspects, the embodiment of the retractor device (9), as described, can be equipped with a generic external light source to illuminate the surgical site.

[0066] Regardless of the preferred embodiments described herein, and without modifying the essential characteristic aspects, the embodiment of the retractor device (9), as previously described, allows the effective exposure and visibility of the breast pocket and, at the same time, does not compromise the integrity of the subcutaneous flap, resulting in a positive outcome of the breast reconstruction procedure performed generally, though not exclusively, with the use of a prepectoral (or sub-cutaneous) acellular biological matrix. With reference to FIG. 8, the hand of the surgeon holds the retractor device (9) by means of the concave handle (3) allowing an ergonomic position to be maintained and a lifting action by means of the convex blade (8).

[0067] According to the invention, subject of this patent application, the stress from the external traction applied to the subcutaneous flap to lift the skin will be spread over a larger support surface thereby reducing tissue damage compared to that resulting from the action of a lever or rectilinear blade, damage which is further increase if the skin is hooked.

[0068] More specifically, the angle of the handle member exerts significant leverage on the surgical site, ensuring less energy dissipation than that produced by a retractor with a handle member positioned perpendicularly to the blade.

[0069] As shown in FIG. 9, the secant of the arch which constitutes the section (s1) between the free end (6) and end (4) of the blade (8), defines the base of an acute triangle whose sides are defined by the two segments comprised, respectively, between the free end (6) and the centre of curvature (1.3) of the upper free end (2), and between the end (4) of the blade (8) and the centre of curvature of the upper free end (2).

[0070] The force applied to lift the skin (traction vector A) and the resistance of the skin itself (coupling-resistance vector B) coincide, passing through the centre of gravity (C) of the defined actuate triangle as described above.

[0071] It follows that the angle of the handle member (3) allows the hand of the surgical assistant to have the most ergonomic position in relation to the lifting action of the handle member itself, and that the triple-curved shape of the retractor device (9) in the embodiment described, for concentrated load in the surgical site, only requires the slight inclination of the wrist to perform the act of exposing the breast pocket, decreasing the traction force required for lifting.