Skin retractor for skin flap separation in breast cancer

Abstract

The utility model relates to a skin retractor for skin flap separation in breast cancer, which comprises a holding part and a traction part arranged at the front end of the holding part, and the traction part comprises a pivoting connection assembly arranged between the holding part and the traction part; the center rod is in a straight rod shape and extends forwards, and the near end of the center rod is connected with the pivoting connecting assembly; the two side rods are arc-shaped rods with the same shape and size, and the arc-shaped openings of the two side rods face the center rod; and the three traction hooks are respectively arranged at the far ends of the central rod and the two side rods. According to the skin drag hook for breast cancer flap separation, through the pivotable multi-hook design, the skin drag hook can be easily operated by a single person, stable and uniform flap tension is provided, flap slippage and tissue damage are effectively avoided, the operation efficiency and safety are remarkably improved, meanwhile, the burden of an assistant is relieved, and the operation process is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of instruments for keeping a wound open, in particular to a skin retractor for breast cancer flap dissection. BACKGROUND

[0002] In breast cancer surgery, flap dissection is a key step of modified radical mastectomy, which requires careful separation of the skin and subcutaneous tissue to fully expose the surgical area and perform lymph node dissection. Currently, commonly used flap dissection tools include surgical knives, scissors and tissue forceps. However, the use of surgical knives and scissors for flap dissection requires high skill and experience of the operator, and can easily cause uneven flap thickness, even damage important blood vessels and nerves, affecting postoperative recovery. Therefore, in clinical practice, two assistants are more commonly used, each holding a pair of T-shaped retractors with both hands, a total of four retractors are used to lift the breast flap upward to fully expose the gland.

[0003] Although this method has been widely used, there are still some defects: first, the space of the surgical area is limited, and the cooperation of two assistants will limit the operation space of the main operator, affecting the smooth progress of the operation; second, due to the difficulty of the two assistants' strength and skill to be completely consistent, the pulling force of the four T-shaped retractors is often uneven, which may lead to uneven distribution of flap tension, affecting the separation accuracy and increasing the risk of surgery. CONTENT OF THE INVENTION

[0004] In order to solve the above problems, the present application provides a skin retractor for breast cancer flap dissection, which can be easily operated by a single person and provides stable and uniform flap tension.

[0005] In order to achieve the above purpose, the skin retractor for breast cancer flap dissection designed by the present application comprises a holding part and a pulling part placed at the front end of the holding part, and the pulling part comprises:

[0006] a pivot connection assembly arranged between the holding part and the pulling part;

[0007] a center rod in the shape of a straight rod extending forward, with its proximal end connected to the pivot connection assembly;

[0008] two side rods, each in the shape of an arc-shaped rod with the same size, and the arc-shaped openings of the two side rods are both directed towards the center rod;

[0009] three pulling hooks arranged at the distal ends of the center rod and the two side rods;

[0010] Among them, the proximal ends of the two side rods are pivotally connected to the center rod through the pivot connection assembly to adjust the included angle between the side rods and the center rod.

[0011] Further, the pivot connection assembly comprises a pin shaft and a central base connected between the holding part and the central rod, the central base is provided with rotating seats connected to the two side rods respectively on the upper and lower sides, the central base and the two rotating seats are both provided with pin holes matched with the pin shaft, and the two rotating seats can pivot relative to the central base under the action of external force through cooperation of the pin shaft and the pin holes.

[0012] Further, the pivot connection assembly further comprises a locking mechanism configured to fix the side rods at a preset angle relative to the central rod.

[0013] Further, the locking mechanism comprises elastic top beads and two annular accommodation grooves, the two annular accommodation grooves are respectively provided on the surfaces of the central base facing the two central bases, and the groove bottoms of the annular accommodation grooves are provided with concaves matched with the elastic top beads, and the concaves are spaced apart from the groove bottoms of the annular accommodation grooves along the circumferences of the annular accommodation grooves.

[0014] Further, the elastic top bead comprises a circular tube with one end open, and a spring and a bead accommodated in the circular tube, the open end of the circular tube is provided with a limiting ring limiting the bead from coming out of the circular tube, the bead is configured to abut against the limiting ring under the elastic action of the spring, and at least part of the bead is exposed outside the limiting ring to abut against the concave.

[0015] Further, the two rotating seats are both provided with sides extending along the axial direction of the pin shaft, the proximal ends of the side rods are connected to the corresponding rotating seats through the sides, so that the two side rods and the central rod are in the same horizontal plane.

[0016] Further, the holding part comprises one or two connected pull rings.

[0017] Further, the holding part, the central rod and the two side rods are all made of stainless steel.

[0018] The skin retractor for breast cancer flap separation designed in the application can be easily operated by one person through the pivotable multi-hook design, provides stable and uniform flap tension, thereby effectively avoiding flap slippage and tissue damage, significantly improving the surgical efficiency and safety, and reducing the burden of the assistant, and optimizing the surgical process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the skin retractor for breast cancer flap separation provided by the embodiment of the application.

[0020] Figure 2 is Figure 1 a perspective exploded view.

[0021] Figure 3 is a top view of Figure 1 .

[0022] Figure 4 is a sectional view of A-A in Figure 3 .

[0023] Figure 5 is a structural schematic diagram of the elastic top bead provided by the embodiment of the application.

[0024] Wherein: the holding part 100, the pulling part 200, the pivot connection assembly 10, the pin shaft 11, the center base 12, the rotating seat 13, the side part 131, the center rod 20, the side rod 30, the pulling hook 40, the elastic top bead 50, the circular tube 51, the spring 52, the bead body 53, the limiting ring 54, the annular accommodation groove 60, and the recess 61. DETAILED DESCRIPTION

[0025] The preferred embodiments of the application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to explain and illustrate the application, and are not used to limit the application.

[0026] As shown in Figures 1 to 5 , the skin retractor for breast cancer flap separation described in the embodiment mainly comprises a holding part 100 and a pulling part 200 arranged at the front end of the holding part 100. The holding part 100 can be a handle structure, which is designed in a shape for comfortable holding by a user and can effectively transmit the pulling force. The material of the holding part 100 is preferably a material with good biocompatibility and easy to be sterilized, such as medical stainless steel or engineering plastic. The pulling part 200 is arranged at the front end of the holding part 100 and mainly comprises a pivot connection assembly 10, a center rod 20, two side rods 30, and three pulling hooks 40. In a specific example, the holding part 100 comprises one or two connected pull rings.

[0027] The pivot connection assembly 10 is arranged between the holding part 100 and the pulling part 200, used to connect the holding part 100 and the center rod 20 and allow the two side rods 30 to pivot relative to the center rod 20. As shown in Figure 2 and Figure 3 , the pivot connection assembly 10 can realize the pivoting function in the form of pin shaft connection, for example, the center rod 20 and the side rod 30 are provided with pin holes, and they are connected together through a pin shaft.

[0028] The center rod 20 is in the form of a straight rod and extends forward, and its proximal end is connected with the pivot connection assembly 10. The material of the center rod 20 is preferably the same as that of the holding part 100.

[0029] Two side rods 30 are provided, both of which are arc-shaped rods of the same shape and size, and the arc-shaped openings of both side rods 30 face the central rod 20. Figure 1 As shown, the proximal ends of the two side rods 30 are pivotally connected to the central rod 20 via the pivot connection assembly 10 to adjust the angle between the side rods 30 and the central rod 20, thereby adapting to flaps of different sizes and shapes and enabling more precise operations.

[0030] Three traction hooks 40 are provided, respectively located at the distal ends of the central rod 20 and the two side rods 30, for hooking the skin flap tissue. The shape of the traction hooks 40 can be designed according to actual needs, for example, it can be a pointed hook, a round hook, or other hook-shaped structure, and the material is preferably medical stainless steel.

[0031] In this way, a single user can operate the device by holding one in each hand without the need for two assistants, thus saving manpower and freeing up valuable operating space in the surgical area. Furthermore, single-person operation allows for more precise control of the force and angle of the retractors, resulting in more uniform tension applied to the skin flap and avoiding skin flap tearing or other damage caused by uneven tension. In other words, single-person operation also reduces the risk of misoperation due to lack of coordination among assistants, thereby improving the safety of the surgery.

[0032] In some embodiments, such as Figure 1 , Figure 2 As shown, the pivoting connection assembly 10 includes a pin 11 and a central base 12 connecting the gripping part 100 and the central rod 20. Rotating seats 13, respectively connected to two side rods 30, are provided on the upper and lower sides of the central base 12. Both the central base 12 and the two rotating seats 13 have pin holes adapted to the pin 11. The two rotating seats 13 can pivot relative to the central base 12 under external force through the cooperation of the pin 11 and the pin holes. In actual surgical operations, the surgeon can flexibly adjust the shape of the retractor according to the patient's specific condition and the needs of flap separation. That is, by applying external force to rotate the rotating seats 13 relative to the central base 12, the angle between the two side rods 30 and the central rod 20 can be adjusted. This adjustable design allows the retractor to adapt to differences in the anatomical structure of different patients, such as breast size.

[0033] In some embodiments, the pivot connection assembly 10 further comprises a locking mechanism configured to fix the side rod 30 at a preset angle relative to the center rod 20. The locking mechanism can fix the side rod 30 at an optimal working angle, so that the user does not need to continuously exert force to maintain the position of the side rod 30, thereby reducing hand fatigue, especially during long surgical operations, and can also prevent accidental changes in the angle of the side rod 30, thereby maintaining the stability of the flap tension and avoiding flap slippage or tissue damage due to tension fluctuations.

[0034] Specifically, as shown in Figure 2 、 Figure 3 、 Figure 4 , the locking mechanism comprises an elastic top bead 50 and two annular accommodation grooves 60, and the two annular accommodation grooves 60 are respectively formed on the surfaces of the center base 12 facing the two center base 12. The groove bottom surface of the annular accommodation groove 60 is provided with a recess 61 matched with the elastic top bead 50, and the recess 61 is spaced apart from the groove bottom surface of the annular accommodation groove 60 along the circumferential direction of the annular accommodation groove 60.

[0035] In actual use, the elastic top bead 50 will automatically enter the recess 61 on the annular accommodation groove 60 under the action of elasticity, thereby firmly locking the side rod 30 at a preset angle, which effectively prevents the side rod 30 from moving or rotating due to accidental collision or change in tension during the operation, ensures the stability of the flap tension, and improves the safety of the operation. When it is necessary to adjust the included angle between the side rod 30 and the center rod 20, the doctor only needs to exert a small external force to rotate the side rod 30, and the rotation of the side rod 30 will drive the rotating seat 13 to rotate relative to the center base 12, so that the elastic top bead 50 is separated from the current recess 61. Continue to rotate the side rod 30, and the elastic top bead 50 will enter the next recess 61 on the annular accommodation groove 60 and be firmly clamped under the action of the spring force, thereby realizing rapid switching and locking of the angle. In this embodiment, as shown in Figure 5 , the elastic top bead 50 comprises a circular tube 51 with one end open, a spring 52 and a bead 53 accommodated in the circular tube 51, a limiting circular ring 54 is arranged at the opening of the circular tube 51 to limit the bead 53 from coming out of the circular tube 51, the bead 53 is configured to abut against the limiting circular ring 54 under the elastic action of the spring 52, and at least part of the bead 53 is exposed outside the limiting circular ring 54 and abuts against the recess 61.

[0036] In some embodiments, as shown in Figure 1 、 Figure 2 、 Figure 4As shown, the two rotating seats 13 are each provided with a side portion 131 extending along the axial direction of the pin shaft 11, and the proximal end of the side rod 30 is connected to the corresponding rotating seat 13 through the side portion 131, so that the two side rods 30 are in the same horizontal plane as the central rod 20. In this way, the side rod 30 is not offset upward or downward, so that the pulling hook 40 is more balanced when pulling the flap

[0037] The skin retractor for breast cancer flap separation provided by the embodiment can be easily operated by one person, provides stable and uniform flap tension, effectively avoids flap slippage and tissue damage, significantly improves surgical efficiency and safety, reduces the burden on assistants, and optimizes the surgical process.

[0038] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arranged", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A skin retractor for breast flap dissection comprising a handle portion and a pulling portion disposed at the front end of the handle portion, characterized in that, The pulling part comprises: a pivot connection assembly arranged between the holding part and the pulling part; a central rod in the shape of a straight rod extending forward, with a proximal end connected to the pivot connection assembly; two side rods, each in the shape of an arcuate rod of the same size, with the arcuate openings of the two side rods facing the central rod; three pulling hooks arranged at the distal ends of the central rod and the two side rods, respectively; wherein the proximal ends of the two side rods are pivotably connected to the central rod through the pivot connection assembly to adjust the included angle between the side rods and the central rod.

2. The skin retractor for breast flap dissection of claim 1, wherein, The pivot connection assembly comprises a pin shaft and a central base connected between the holding part and the central rod, with a rotating seat connected to each side rod arranged on the upper and lower sides of the central base, and a pin hole adapted to the pin shaft being formed on the central base and the two rotating seats, so that the two rotating seats can be pivoted relative to the central base under the action of an external force through the cooperation of the pin shaft and the pin hole.

3. The skin retractor for breast flap dissection of claim 2, wherein, The pivot connection assembly further comprises a locking mechanism configured to fix the side rods at a preset angle relative to the central rod.

4. The skin retractor for breast flap dissection of claim 3, wherein, The locking mechanism comprises an elastic top bead and two annular accommodation grooves, with the annular accommodation grooves being formed on the surfaces of the central base facing the two rotating seats, and the groove bottom surface of the annular accommodation groove being provided with a recess adapted to the elastic top bead, and the recess being spaced apart from the groove bottom surface of the annular accommodation groove along the circumferential direction of the annular accommodation groove.

5. The skin retractor for breast flap dissection of claim 4, wherein, The elastic top bead comprises a circular tube with one end open, a spring and a bead body accommodated in the circular tube, a limiting ring arranged at the open end of the circular tube to limit the bead body from coming out of the circular tube, and the bead body being configured to abut against the limiting ring under the elastic action of the spring, with at least part of the bead body exposed outside the limiting ring to abut against the recess.

6. The skin retractor for breast flap dissection of claim 2, wherein, The two rotating seats are each provided with a side portion extending along the axial direction of the pin shaft, and the proximal end of the side rod is connected to the corresponding rotating seat through the side portion, so that the two side rods and the central rod are in the same horizontal plane.

7. The skin retractor for breast flap dissection of claim 1, wherein, The holding part comprises one or two connected pull rings.

8. The skin retractor for breast flap dissection of claim 1, wherein, The holding part, the central rod and the two side rods are all made of stainless steel.

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