Skin soft tissue extender

Abstract

The invention discloses a skin soft tissue extender, which comprises a first stretching component, a second stretching component, a third stretching component and a fourth stretching component, the first stretching component comprises a first bottom plate and a first connecting piece, the first bottom plate can be fixed on the skin, and the first connecting piece is arranged on the first bottom plate; the second stretching assembly comprises a second bottom plate capable of being fixed on the skin and a second connecting piece arranged on the second bottom plate; the telescopic rod assembly is arranged between the first connecting piece and the second connecting piece, is connected with the first connecting piece and the second connecting piece, and is used for driving the second stretching assembly to be close to or away from the first stretching assembly. Compared with a skin soft tissue expander in the prior art, the skin soft tissue expander is simple in structure, few in parts and light in overall weight, does not produce pressure or secondary damage to the skin when being worn on the skin, and better meets the requirement for portability of human body wearable equipment. And the operation is convenient and fast, the user can operate by himself / herself, the safety is greatly improved, and the use difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and more particularly to a skin soft tissue extender. Background Art

[0002] Currently, the mainstream clinical method is still the use of subcutaneous expansion (skin soft tissue expander). The principle is to bury the expander under the skin and regularly inject physiological saline into the expansion sac to generate tension (biological stress) on the skin on the surface of the expansion sac, promote cell proliferation and fiber elongation, and thus obtain additional skin tissue. It is widely used in clinical practice for scar repair, skin defects, organ reconstruction, etc.

[0003] However, expanders still have some shortcomings: 1. Time-consuming: multiple surgeries are required, with implantation followed by expansion; 2. High complications: rejection, expander rupture and exposure, infection risk, etc.; 3. High cost: implant materials and high economic costs; 4. Complex to use, patients need to come to the hospital every week for expander water injection treatment. To address these problems, a skin soft tissue stretcher has been developed to provide a more convenient, safer and more effective solution. Summary of the invention

[0004] The present invention aims at solving the above-mentioned defects in the prior art and provides a skin soft tissue extender.

[0005] The technical solution adopted by the present invention to solve the technical problem is: construct a skin soft tissue extender, the extender comprises:

[0006] A first stretching assembly includes a first bottom plate that can be fixed on the skin, and a first connecting member disposed on the first bottom plate;

[0007] A second stretching assembly includes a second bottom plate that can be fixed on the skin, and a second connecting member disposed on the second bottom plate;

[0008] The telescopic rod assembly is arranged between the first connecting member and the second connecting member to connect the first connecting member and the second connecting member, and is used to drive the second stretching assembly to move closer to or farther from the first stretching assembly.

[0009] In the skin and soft tissue extender described in the present invention, the telescopic rod assembly includes a first sleeve, a first connecting column fixed to the first end of the first sleeve, and a first stud inserted into the second end of the first sleeve and threadedly connected to the first sleeve. The first connecting member is provided with a first adapter hole through which the first connecting column can be rotatably inserted and connected. The second end of the first sleeve is provided with a first threaded hole through which the first end of the first stud can be inserted and threaded, and the second end of the first stud is fixedly connected to the second connecting member.

[0010] In the skin soft tissue extender described in the present invention, a limiting ball that can rotate in the first adapter hole is fixedly provided at the first end of the first connecting column, and a spherical groove that can allow the limiting ball to be rotatably embedded and connected is provided on the inner side wall of the first adapter hole at a position corresponding to the limiting ball.

[0011] In the skin soft tissue extender described in the present invention, the diameter of the limiting ball is greater than the diameter of the first connecting column.

[0012] In the skin and soft tissue extender of the present invention, anti-slip grooves are provided on the surface of the first sleeve.

[0013] In the skin and soft tissue extender described in the present invention, the telescopic rod assembly includes a second sleeve, a second connecting column fixed to the second end of the second sleeve, and a second stud inserted into the first end of the first sleeve and threadedly connected to the first sleeve. The second connecting member is provided with a second adapter hole through which the second connecting column can be rotatably inserted and connected. The first end of the second sleeve is provided with a second threaded hole through which the second end of the second stud can be inserted and threadedly connected. The first end of the second stud is fixedly connected to the first connecting member.

[0014] In the skin and soft tissue extender described in the present invention, the telescopic rod assembly includes a third sleeve, a third stud inserted into the first end of the third sleeve and threadedly connected to the third sleeve, and a fourth stud inserted into the second end of the third sleeve and threadedly connected to the third sleeve. The first end of the third sleeve is provided with a third threaded hole for the second end of the third stud to be inserted and threaded, and the second end of the third sleeve is provided with a fourth threaded hole for the first end of the fourth stud to be inserted and threaded, the first end of the third stud is fixedly connected to the first connecting member, and the second end of the fourth stud is fixedly connected to the second connecting member.

[0015] In the skin soft tissue extender of the present invention, the third stud and the fourth stud have the same diameter, and the external thread of the third stud and the external thread of the fourth stud have opposite thread directions and the same thread pitch.

[0016] In the skin and soft tissue extender described in the present invention, the first base plate is provided with a first reinforcing beam protruding from the top surface of the first base plate, the first connecting piece is fixedly connected to the middle part of the first reinforcing beam, and the second base plate is provided with a second reinforcing beam protruding from the top surface of the second base plate, the second connecting piece is fixedly connected to the middle part of the second reinforcing beam.

[0017] In the skin soft tissue extender described in the present invention, the first reinforcing beam is arranged along the length direction of the first base plate, and the first reinforcing beam is perpendicular to the length direction of the telescopic rod assembly, and the second reinforcing beam is arranged along the length direction of the second base plate, and the second reinforcing beam is perpendicular to the length direction of the telescopic rod assembly.

[0018] The implementation of the skin and soft tissue extender of the present invention has the following beneficial effects: when using the skin and soft tissue extender of the present invention, the first base plate and the second base plate are respectively fixed to the skin surface at different positions, and then the first base plate and the second base plate are adjusted to approach or move away from each other by controlling the extension or shortening of the telescopic rod assembly. In the process of the first base plate and the second base plate approaching or moving away from each other, the first base plate and the second base plate drive the skin connected thereto to shift to both sides, giving the skin between the first base plate and the second base plate a slow and lasting stress, and finally promoting the proliferation of skin cells and the elongation of fibers, and obtaining additional skin and soft tissue. Thus, the obtained additional skin tissue is used for tissue repair and reconstruction.

[0019] Compared with the skin soft tissue extender in the prior art, the extender of the present application has a simple structure, fewer parts, and a lighter overall weight. When worn on the skin, it will not cause pressure or secondary damage to the skin, and is more in line with the requirements of light wearable devices for the human body. It is also easy to operate and can be operated by the user, which greatly increases safety and reduces the difficulty of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 It is a schematic structural diagram of a first embodiment of the skin soft tissue extender of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the first sleeve in the first embodiment of the skin soft tissue extender of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a second embodiment of the skin and soft tissue extender of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the first embodiment of the skin soft tissue extender of the present invention. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, in the first embodiment of the skin soft tissue extender of the present invention, the extender 10 comprises:

[0027] A first stretching assembly 11, comprising a first bottom plate 13 that can be fixed on the skin, and a first connecting member 15 disposed on the first bottom plate 13;

[0028] A second stretching assembly 12, comprising a second bottom plate 14 that can be fixed on the skin, and a second connecting member 16 disposed on the second bottom plate 14;

[0029] The telescopic rod assembly 17 is disposed between the first connecting member 15 and the second connecting member 16 to connect the first connecting member 15 and the second connecting member 16 and is used to drive the second stretching assembly 12 to move closer to or farther from the first stretching assembly 11 .

[0030] The bottom surfaces of the first bottom plate 13 and the second bottom plate 14 are flat, which is convenient for fixing them to the skin. Specifically, the first bottom plate 13 and the second bottom plate 14 can be fixed to the skin surface by bonding, or by invasive methods such as inserting Kirschner wires or sutures into the subcutaneous tissue to fix the first bottom plate 13 and the second bottom plate 14 to the skin. In other embodiments, the bottom surfaces of the first bottom plate 13 and the second bottom plate 14 are provided with negative pressure suction cup negative pressure devices, and the first bottom plate 13 and the second bottom plate 14 are fixedly connected to the skin by negative pressure.

[0031] In one embodiment, the first connecting member 15 is fixed on the first bottom plate 13, and the second connecting member 16 is fixed on the second bottom plate 14. In one embodiment, the telescopic rod assembly 17 can be a telescopic screw assembly, which will be described in detail later. In other embodiments, the telescopic rod assembly 17 can also be other forms such as a gear rack, or a pneumatic, electric, hydraulic telescopic rod, or other telescopic devices that can be extended or shortened.

[0032] When using the skin soft tissue extender of the present invention, the first base plate 13 and the second base plate 14 are respectively fixed to the skin surface at different positions, and then the first base plate 13 and the second base plate 14 are adjusted to approach or move away from each other by controlling the extension or shortening of the telescopic rod assembly 17. In the process of the first base plate 13 and the second base plate 14 approaching or moving away from each other, the first base plate 13 and the second base plate 14 drive the skin connected thereto to shift to both sides, giving the skin between the first base plate 13 and the second base plate 14 slow and lasting stress, and finally promoting skin cell proliferation and fiber elongation, and obtaining additional skin soft tissue. Thus, the obtained additional skin tissue is used for tissue repair and reconstruction.

[0033] Compared with the skin soft tissue extender in the prior art, the extender 10 of the present application has a simple structure, fewer parts, and a lighter overall weight. When worn on the skin, it will not cause pressure or secondary damage to the skin, and is more in line with the requirements of light wearable devices for the human body. It is also easy to operate and can be operated by the user, which greatly increases safety and reduces the difficulty of use.

[0034] like Figure 1As shown, a first embodiment of the extender 10 is shown. In this embodiment, the telescopic rod assembly 17 includes a first sleeve 18, a first connecting column 19 fixed to the first end of the first sleeve 18, and a first stud 20 inserted into the second end of the first sleeve 18 and threadedly connected to the first sleeve 18. The first connecting member 15 is provided with a first adapter hole 21 for the first connecting column 19 to be rotatably inserted and connected. The second end of the first sleeve 18 is provided with a first threaded hole 22 for the first end of the first stud 20 to be inserted and threaded, and the second end of the first stud 20 is fixedly connected to the second connecting member 16.

[0035] Specifically, the first sleeve 18 and the first connecting column 19 are made of polymer materials (such as PE materials, or other polymer medical materials). The second end of the first stud 20 is fixed to the second connecting member 16, and the first end is inserted into the second end of the first sleeve 18 and screwed to the first threaded hole 22. In a preferred embodiment, the first base plate 13, the second base plate 14, the first connecting member 15, the second connecting member 16, the first sleeve 18, the first connecting column 19, and the first stud 20 are all made of medical grade PC materials to achieve the purpose of reducing the overall weight of the extender 10.

[0036] Preferably, the diameter of the first sleeve 18 is greater than the diameter of the first connecting column 19 , and the diameter of the first connecting column 19 is comparable to or equal to the diameter of the first stud 20 .

[0037] Further, such as Figure 2 As shown, in order to limit the movement of the first end of the first connecting column 19 in the first adapter hole 21, the first end of the first connecting column 19 is fixedly provided with a limiting ball 23 that can rotate in the first adapter hole 21, and the inner side wall of the first adapter hole 21 is provided with a spherical groove (not shown) at a position corresponding to the limiting ball 23, in which the limiting ball 23 can be rotatably embedded and connected.

[0038] When inserting the first end of the first connecting column 19 into the first transfer hole 21, it is necessary to force the limiting ball 23 to be embedded in the spherical groove. When the first connecting column 19 is rotated, the first connecting column 19 can rotate in the first transfer hole 21, and the limiting ball 23 can rotate in the spherical groove. However, during the rotation process, since the limiting ball 23 is embedded in the spherical groove, the first connecting column 19 can be prevented from moving outward or inward in the first transfer hole 21, thereby achieving the purpose that the first connecting column 19 and the first transfer hole 21 can only rotate relative to each other, but cannot move relative to each other.

[0039] Specifically, the diameter of the limiting ball 23 is greater than the diameter of the first connecting column 19 .

[0040] When the first bottom plate 13 and the second bottom plate 14 need to be controlled to approach each other, the first sleeve 18 is rotated in the first direction, and the first sleeve 18 drives the first connecting column 19 to rotate in the first transfer hole 21, but because the limiting ball 23 is embedded in the spherical groove, the first connecting column 19 cannot move left and right in the first transfer hole 21. At the same time, the first sleeve 18 rotates relative to the first stud 20, so that the first stud 20 is gradually inserted into the first threaded hole 22 under the action of the threaded connection, thereby driving the second bottom plate 14 to move toward the first bottom plate 13, thereby generating a pulling force (biological stress) on the skin between the first bottom plate 13 and the second bottom plate 14, promoting skin cell proliferation and fiber elongation.

[0041] When the first bottom plate 13 and the second bottom plate 14 need to be controlled to move away from each other, the first sleeve 18 is rotated in the second direction, and the first sleeve 18 drives the first connecting column 19 to rotate in the first transfer hole 21. However, since the limiting ball 23 is embedded in the spherical groove, the first connecting column 19 cannot move left and right in the first transfer hole 21. At the same time, the first sleeve 18 rotates relative to the first stud 20, so that the first stud 20 gradually withdraws from the first threaded hole 22 under the action of the threaded connection, thereby driving the second bottom plate 14 to move away from the first bottom plate 13, thereby generating a pulling force (biological stress) on the skin between the first bottom plate 13 and the second bottom plate 14, promoting skin cell proliferation and fiber elongation.

[0042] To facilitate the rotation of the first sleeve 18 , anti-slip grooves 24 are provided on the surface of the first sleeve 18 .

[0043] The following is the animal in vitro experimental data of the skin soft tissue extender of the present invention:

[0044]

[0045] (Note: Pig skin was selected as the experimental model to meet ethical requirements and is highly similar to human skin in terms of biomechanical properties)

[0046] From the above data, it can be seen that the skin soft tissue extender of the present invention can achieve a good extending effect.

[0047] like Figure 3 As shown, it is a second embodiment of the extender 10. In this embodiment, the telescopic rod assembly 17 includes a second sleeve 25, a second connecting column 26 fixed to the second end of the second sleeve 25, and a second stud 27 inserted into the first end of the first sleeve 18 and threadedly connected to the first sleeve 18. The second connecting member 16 is provided with a second adapter hole 28 for the second connecting column 26 to be rotatably inserted and connected. The first end of the second sleeve 25 is provided with a second threaded hole 29 for the second end of the second stud 27 to be inserted and threaded, and the first end of the second stud 27 is fixedly connected to the first connecting member 15.

[0048] Specifically, the second sleeve 25 and the second connecting column 26 are made of polymer materials (such as PE materials, or other polymer medical materials). The first end of the second stud 27 is fixed to the first connecting member 15, and the second end is inserted into the first end of the first sleeve 18 and screwed to the second threaded hole 29. In a preferred embodiment, the first base plate 13, the second base plate 14, the first connecting member 15, the second connecting member 16, the second sleeve 25, the second connecting column 26, and the second stud 27 are all made of medical grade PC materials to achieve the purpose of reducing the overall weight of the extender 10.

[0049] Preferably, the diameter of the second sleeve 25 is greater than the diameter of the second connecting column 26 , and the diameter of the second connecting column 26 is comparable to or equal to the diameter of the second stud 27 .

[0050] Similar to the first embodiment, in order to limit the movement of the second end of the second connecting column 26 in the second adapter hole 28, a limiting ball 23 that can rotate in the second adapter hole 28 is fixed to the second end of the second connecting column 26, and the inner side wall of the second adapter hole 28 is provided with a spherical groove at a position corresponding to the limiting ball 23, in which the limiting ball 23 can be rotatably embedded and connected.

[0051] When the second end of the second connecting column 26 is inserted into the second transfer hole 28, the limiting ball 23 needs to be inserted into the spherical groove with force. When the second connecting column 26 is rotated, the second connecting column 26 can rotate in the second transfer hole 28, and the limiting ball 23 can rotate in the spherical groove. However, during the rotation process, since the limiting ball 23 is inserted into the spherical groove, the second connecting column 26 can be prevented from moving outward or inward in the second transfer hole 28, thereby achieving the purpose that the second connecting column 26 and the second transfer hole 28 can only rotate relative to each other but cannot move relative to each other.

[0052] Specifically, the diameter of the limiting ball 23 is greater than the diameter of the first connecting column 19 .

[0053] When the first bottom plate 13 and the second bottom plate 14 need to be controlled to approach each other, the second sleeve 25 is rotated in the first direction, and the second sleeve 25 drives the second connecting column 26 to rotate in the second transfer hole 28. However, since the limiting ball 23 is embedded in the spherical groove, the second connecting column 26 cannot move left and right in the second transfer hole 28. At the same time, the second sleeve 25 rotates relative to the second stud 27, so that the second stud 27 is gradually inserted into the second threaded hole 29 under the action of the threaded connection, thereby driving the first bottom plate 13 to move toward the second bottom plate 14, thereby generating a pulling force (biological stress) on the skin between the first bottom plate 13 and the second bottom plate 14, promoting skin cell proliferation and fiber elongation.

[0054] When the first bottom plate 13 and the second bottom plate 14 need to be controlled to move away from each other, the second sleeve 25 is rotated in the second direction, and the second sleeve 25 drives the second connecting column 26 to rotate in the second transfer hole 28. However, since the limiting ball 23 is embedded in the spherical groove, the second connecting column 26 cannot move left and right in the second transfer hole 28. At the same time, the second sleeve 25 rotates relative to the second stud 27, so that the second stud 27 gradually withdraws from the second threaded hole 29 under the action of the threaded connection, thereby driving the first bottom plate 13 to move away from the second bottom plate 14, thereby generating a pulling force (biological stress) on the skin between the first bottom plate 13 and the second bottom plate 14, promoting skin cell proliferation and fiber elongation.

[0055] like Figure 4 As shown, it is a third embodiment of the extender 10. In this embodiment, the telescopic rod assembly 17 includes a third sleeve 30, a third stud 31 inserted into the first end of the third sleeve 30 and threadedly connected to the third sleeve 30, and a fourth stud 32 inserted into the second end of the third sleeve 30 and threadedly connected to the third sleeve 30. The first end of the third sleeve 30 is provided with a third threaded hole 33 for the second end of the third stud 31 to be inserted and threaded, and the second end of the third sleeve 30 is provided with a fourth threaded hole 34 for the first end of the fourth stud 32 to be inserted and threaded, the first end of the third stud 31 is fixedly connected to the first connecting member 15, and the second end of the fourth stud 32 is fixedly connected to the second connecting member 16.

[0056] In order to better control the first bottom plate 13 and the second bottom plate 14 to synchronously approach or move away from each other, the third stud 31 and the fourth stud 32 have the same diameter, and the external threads of the third stud 31 and the fourth stud 32 have opposite thread directions and the same pitch.

[0057] When the first bottom plate 13 and the second bottom plate 14 need to be controlled to approach each other, the third sleeve 30 is rotated in the first direction. Since the first end of the third stud 31 is fixedly connected to the first connecting member 15, the third stud 31 cannot rotate with the third sleeve 30. During the rotation of the third sleeve 30, the third threaded hole 33 drives the third stud 31, the first connecting member 15 and the first bottom plate 13 to move in the direction close to the second bottom plate 14. At the same time, during the rotation of the third sleeve 30 in the first direction, since the second end of the fourth stud 32 is fixedly connected to the second connecting member 16, the fourth stud 32 cannot rotate with the third sleeve 30. During the rotation of the third sleeve 30, the fourth threaded hole 34 drives the fourth stud 32, the second connecting member 16 and the second bottom plate 14 to move in the direction close to the first bottom plate 13. In this way, the first bottom plate 13 and the second bottom plate 14 are brought close to each other, and the skin connected thereto is moved and stretched toward the middle through the first bottom plate 13 and the second bottom plate 14, so as to promote the proliferation of skin cells and the elongation of fibers.

[0058] When the first bottom plate 13 and the second bottom plate 14 need to be controlled to move away from each other, the third sleeve 30 is rotated in the second direction. Since the first end of the third stud 31 is fixedly connected to the first connecting member 15, the third stud 31 cannot rotate with the third sleeve 30. During the rotation of the third sleeve 30, the third threaded hole 33 drives the third stud 31, the first connecting member 15 and the first bottom plate 13 to move in the direction away from the second bottom plate 14. At the same time, during the rotation of the third sleeve 30 in the second direction, since the second end of the fourth stud 32 is fixedly connected to the second connecting member 16, the fourth stud 32 cannot rotate with the third sleeve 30. During the rotation of the third sleeve 30, the fourth threaded hole 34 drives the fourth stud 32, the second connecting member 16 and the second bottom plate 14 to move in the direction away from the first bottom plate 13. In this way, the first bottom plate 13 and the second bottom plate 14 are moved away from each other, and the skin connected thereto is moved and stretched to both sides by the first bottom plate 13 and the second bottom plate 14, so as to promote the proliferation of skin cells and the elongation of fibers.

[0059] Furthermore, the first bottom plate 13 is provided with a first reinforcing beam 35 protruding from the top surface of the first bottom plate 13, and the first connecting member 15 is fixedly connected to the middle portion of the first reinforcing beam 35; the second bottom plate 14 is provided with a second reinforcing beam 36 protruding from the top surface of the second bottom plate 14, and the second connecting member 16 is fixedly connected to the middle portion of the second reinforcing beam 36.

[0060] When the telescopic rod assembly 17 is used to pull the first bottom plate 13 and the second bottom plate 14, the pulling force is evenly transmitted to the first bottom plate 13 and the second bottom plate 14 through the first reinforcing beam 35 and the second reinforcing beam 36, thereby generating a uniform and effective pulling force. At the same time, the first reinforcing beam 35 and the second reinforcing beam 36 are provided to increase the force strength of the first bottom plate 13 and the second bottom plate 14.

[0061] Preferably, the first reinforcing beam 35 is arranged along the length direction of the first base plate 13, and the first reinforcing beam 35 is perpendicular to the length direction of the telescopic rod assembly 17, and the second reinforcing beam 36 is arranged along the length direction of the second base plate 14, and the second reinforcing beam 36 is perpendicular to the length direction of the telescopic rod assembly 17.

[0062] In the present application, in order to prevent the first bottom plate 13 and the second bottom plate 14 from piercing the skin, both ends of the first bottom plate 13 are arc-shaped ends, and both ends of the second bottom plate 14 are also arc-shaped ends.

[0063] A plurality of first ventilation holes 37 penetrating the first bottom plate 13 are provided on the first bottom plate 13 , and a plurality of second ventilation holes 38 penetrating the second bottom plate 14 are provided on the second bottom plate 14 .

[0064] In the present application, in order to prevent the first screw rod and the first sleeve 18 from rotating relative to each other during the pulling process, the first sleeve 18 is provided with a first locking screw hole and a first locking bolt that can pass through the first locking screw hole and abut against the first screw rod, and the first locking bolt can be screwed into the first locking screw hole. Similarly, in order to prevent the second screw rod and the second sleeve 25 from rotating relative to each other during the pulling process, the second sleeve 25 is provided with a second locking screw hole and a second locking bolt that can pass through the second locking screw hole and abut against the second screw rod, and the second locking bolt can be screwed into the second locking screw hole. Similarly, in order to prevent the third screw, the fourth screw and the third sleeve 30 from rotating relative to each other during the pulling process, the first end of the third sleeve 30 is provided with a third locking screw hole, and a third locking bolt that can pass through the third locking screw hole and abut against the third screw. The second end of the third sleeve 30 is provided with a fourth locking screw hole, and a fourth locking bolt that can pass through the fourth locking screw hole and abut against the fourth screw. The third locking bolt can be screwed into the third locking screw hole, and the fourth locking bolt can be screwed into the fourth locking screw hole.

[0065] In other embodiments, a locking screw hole and a locking bolt that can pass through the locking screw hole and abut against the first connecting column 19 or the second connecting column 26 can be provided on the first connecting member 15 or the second connecting member 16, and the locking bolt is threadedly connected to the locking screw hole.

[0066] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", "stacked" and the like should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A skin soft tissue extender, characterized in that: The extender (10) comprises: A first stretching assembly (11), comprising a first base plate (13) that can be fixed on the skin, and a first connecting member (15) disposed on the first base plate (13); A second stretching assembly (12), comprising a second bottom plate (14) that can be fixed on the skin, and a second connecting member (16) disposed on the second bottom plate (14); A telescopic rod assembly (17) is arranged between the first connecting member (15) and the second connecting member (16) to connect the first connecting member (15) and the second connecting member (16), and is used to drive the second stretching assembly (12) and the first stretching assembly (11) to move closer to or farther away from each other.

2. The skin soft tissue extender according to claim 1, characterized in that: The telescopic rod assembly (17) comprises a first sleeve (18), a first connecting column (19) fixedly arranged at the first end of the first sleeve (18), and a first stud (20) inserted into the second end of the first sleeve (18) and threadedly connected to the first sleeve (18); the first connecting member (15) is provided with a first adapter hole (21) for the first connecting column (19) to be rotatably inserted and connected; the second end of the first sleeve (18) is provided with a first threaded hole (22) for the first end of the first stud (20) to be inserted and threadedly connected; the second end of the first stud (20) is fixedly connected to the second connecting member (16).

3. The skin soft tissue extender according to claim 2, characterized in that: A limiting ball (23) is fixedly disposed at the first end of the first connecting column (19) and is rotatable in the first adapter hole (21); and a spherical groove is disposed on the inner side wall of the first adapter hole (21) at a position corresponding to the limiting ball (23) and in which the limiting ball (23) can be rotatably embedded and connected.

4. The skin soft tissue extender according to claim 3, characterized in that: The diameter of the limiting ball (23) is greater than the diameter of the first connecting column (19).

5. The skin soft tissue extender according to claim 2, characterized in that: Anti-slip grooves (24) are provided on the surface of the first sleeve (18).

6. The skin soft tissue extender according to claim 1, characterized in that: The telescopic rod assembly (17) comprises a second sleeve (25), a second connecting column (26) fixedly arranged at the second end of the second sleeve (25), and a second stud (27) inserted into the first end of the first sleeve (18) and threadedly connected to the first sleeve (18); the second connecting member (16) is provided with a second adapter hole (28) for the second connecting column (26) to be rotatably inserted and connected; the first end of the second sleeve (25) is provided with a second threaded hole (29) for the second end of the second stud (27) to be threadedly inserted; the first end of the second stud (27) is fixedly connected to the first connecting member (15).

7. The skin soft tissue extender according to claim 1, characterized in that: The telescopic rod assembly (17) comprises a third sleeve (30), a third stud (31) inserted into the first end of the third sleeve (30) and threadedly connected to the third sleeve (30), and a fourth stud (32) inserted into the second end of the third sleeve (30) and threadedly connected to the third sleeve (30); a third threaded hole (33) is provided in the first end of the third sleeve (30) for the second end of the third stud (31) to be threadedly inserted; a fourth threaded hole (34) is provided in the second end of the third sleeve (30) for the first end of the fourth stud (32) to be threadedly inserted; the first end of the third stud (31) is fixedly connected to the first connecting member (15), and the second end of the fourth stud (32) is fixedly connected to the second connecting member (16).

8. The skin soft tissue extender according to claim 7, characterized in that: The third stud (31) and the fourth stud (32) have the same diameter, and the external threads of the third stud (31) and the fourth stud (32) have opposite thread directions and the same thread pitches.

9. The skin soft tissue extender according to claim 1, characterized in that: The first bottom plate (13) is provided with a first reinforcing beam (35) protruding from the top surface of the first bottom plate (13), and the first connecting member (15) is fixedly connected to the middle portion of the first reinforcing beam (35); the second bottom plate (14) is provided with a second reinforcing beam (36) protruding from the top surface of the second bottom plate (14), and the second connecting member (16) is fixedly connected to the middle portion of the second reinforcing beam (36).

10. The skin soft tissue extender according to claim 9, characterized in that: The first reinforcing beam (35) is arranged along the length direction of the first bottom plate (13), and the first reinforcing beam (35) is perpendicular to the length direction of the telescopic rod assembly (17); the second reinforcing beam (36) is arranged along the length direction of the second bottom plate (14), and the second reinforcing beam (36) is perpendicular to the length direction of the telescopic rod assembly (17).

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