Skin tensioning device

Abstract

This patent relates to the field of hair transplantation technology, and in particular to a skin tensioning device. The skin tensioning device provided by this patent includes: a tensioner and a stretcher, the tensioner is connected to the stretcher; the stretcher includes: a fixed component; a rotating component, the rotating component abuts against the fixed component and can rotate with an axis parallel to the fixed component as the rotation axis; a connecting component, the connecting component connects the tensioner and the rotating component; the rotating component can drive the connecting component to move during the rotation process, so that the tensioner expands. The adjustment method of indirectly converting the rotational motion of the rotating component into the linear motion of the connecting component makes the expansion of the tensioner more stable, and can control the expansion amplitude of each side of the tensioner and limit the expansion direction.

Description

Technical Field

[0001] This patent relates to the field of hair transplantation technology, and in particular to a skin tensioning device. Background Art

[0002] At present, the tensioner in hair transplant surgery usually needs to achieve a pre-contraction state by applying external force, generating a pre-tensioning force that causes the tensioner to tend to reset. After the tensioner is placed on the skin of the surgical area, the tensioning force applied by hand is released to achieve expansion of the skin of the surgical area, so that the residual pre-tensioning force and the resistance of the scalp reach a balance, and hair follicles are extracted or transplanted.

[0003] However, in the prior art, the tensioner usually needs to be adjusted by directly applying external force to adjust its contraction. In most cases, the external force applied to the tensioner is unstable. When the applied force is too strong, it is easy to cause the tensioner to expand or contract beyond the specified range, causing irreversible deformation of the tensioner. In addition, it is difficult to ensure that the movement amplitude of each side of the tensioner is the same when the external force is applied by direct contact with the tensioner. When the movement amplitude of each side of the tensioner is different, it is difficult to stretch the skin evenly, which is not conducive to the extraction and implantation of hair follicles. Summary of the invention

[0004] In order to solve or at least partially solve the above technical problems, this patent provides a skin tensioning device, comprising:

[0005] A tensioner and a stretcher, the tensioner is connected to the stretcher;

[0006] The tensioner includes:

[0007] Fixed parts;

[0008] A rotating member, the rotating member abuts against the fixed member and can rotate with an axis parallel to the fixed member as a rotation axis;

[0009] A connecting assembly, the connecting assembly connecting the tensioner and the rotating member;

[0010] The rotating member can drive the connecting assembly to move during the rotation process, so that the tensioner expands.

[0011] Optionally, in the skin tensioning device as described above, the connecting component comprises:

[0012] Axis of rotation;

[0013] A first connecting member, one end of which is connected to the rotating shaft, and the other end of which is connected to the tensioner;

[0014] The rotating member is sleeved on the rotating shaft and rotates along with the rotating shaft;

[0015] The outer wall of the rotating member abuts against the fixed member. During the rotation, the distance between the rotating shaft and the portion of the rotating member abutting against the fixed member changes, so that the first connecting member is driven to move through the rotating shaft.

[0016] Optionally, in the skin tensioning device as described above, the rotating member comprises:

[0017] The main body has a rotating body structure;

[0018] a hole, disposed on the main body, for accommodating the rotating shaft;

[0019] The hole is located at a position of the main body that deviates from the geometric center, so that when the rotating member rotates eccentrically along the rotating axis, the distance between the rotating axis and the fixed component changes.

[0020] Optionally, in the skin tensioning device as described above, the rotating member further comprises:

[0021] A toggle part, connected to the main body, used to bear external force to make the rotating member rotate;

[0022] The toggle part has:

[0023] a first surface extending along a tangent line of a side surface of the body;

[0024] a second surface disposed parallel to the first surface and also connected to the side of the body;

[0025] The connecting surface connects the first surface and the second surface respectively, and the connecting surface is a part of the surface of the cylinder.

[0026] Optionally, in the skin tensioning device as described above, a support plate is provided at one end of the first connecting member, and an engaging groove that matches the shape of the support plate is provided on the inner side of each side of the tensioner, and the support plate is engaged in the engaging groove.

[0027] Optionally, in the skin tensioning device as described above, the connecting assembly further comprises a second connecting member, and the second connecting member and the first connecting member are respectively connected to two sides of the rotating shaft;

[0028] The second connecting member and the first connecting member both pass through the fixing component and are connected to the tensioner.

[0029] Optionally, in the skin tensioning device as described above, an axial hole is provided on the first connecting member, the rotating shaft is arranged through the axial hole, a slot is provided at a position where the rotating shaft passes through the axial hole, and the connecting assembly further comprises:

[0030] The clamping member is arranged on the clamping slot so as to restrict the first connecting member between the clamping slot and the rotating member.

[0031] Optionally, in the skin tensioning device as described above, the outer wall of the rotating shaft includes at least one arcuate surface and at least one plane connected to the arcuate surface, the hole of the rotating member matches the cross-sectional shape of the rotating shaft, and the plane arranged on the outer wall of the rotating shaft is used to assist in preventing the rotating member from resetting.

[0032] Optionally, in the skin tensioning device as described above, the fixing component comprises:

[0033] chassis, used to provide support;

[0034] A retaining wall is arranged on the chassis, and the rotating member abuts against the retaining wall;

[0035] An opening is provided on the chassis at a position corresponding to the rotating part, and the opening is used to avoid the rotating part.

[0036] Optionally, in the skin tensioning device as described above, the number of tensioner sides is the same as the number of stretchers and corresponds one to one, and the number of stretchers is greater than or equal to 2.

[0037] Compared to the prior art, this patent provides a tensioner including a rotating member and a connecting assembly. The rotating member drives the connecting assembly connected to the axis to perform linear motion by rotating around the axis, so that the tensioner connected to the connecting assembly moves along the straight line with the connecting assembly. Compared to directly adjusting the expansion of the tensioner by external force, the adjustment method of indirectly converting the rotating motion of the rotating member into the linear motion of the connecting assembly is more stable, and can control the expansion amplitude of each side of the tensioner and limit the expansion direction. In addition, the rotating member abuts against the fixed component and the axis of the rotating member is eccentrically arranged, so that the rotating member moves the axis away from the fixed component during the rotation process, thereby driving the connecting assembly to move. The setting of the toggle part enables the rotating member to have an external force bearing point, so that the rotating member can be easily toggled and rotated by external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the implementation of this patent, the following is a brief introduction to the relevant drawings. It can be understood that the drawings described below are only used to illustrate some implementations of this patent, and ordinary technicians in this field can also obtain many other technical features and connection relationships not mentioned in this article based on these drawings.

[0039] Figure 1 is a three-dimensional schematic diagram of a skin tensioning device according to an embodiment of the present patent;

[0040] Figure 2 It is a three-dimensional schematic diagram of another skin tensioning device according to an embodiment of the present patent;

[0041] Figure 3 It is a three-dimensional schematic diagram of another skin tensioning device according to an embodiment of the present patent;

[0042] Figure 4 is a three-dimensional schematic diagram of a rotating member of a skin tensioning device according to an embodiment of the present patent;

[0043] Figure 5 is another schematic diagram of a rotating member of a skin tensioning device according to an embodiment of the present patent;

[0044] Figure 6 It is a partial schematic diagram of a skin tensioning device according to an embodiment of the present patent;

[0045] Figure 7 This is a schematic diagram of a skin tensioning device with a cam mechanism according to an embodiment of the present patent.

[0046] Description of reference numerals:

[0047] A. Skin tensioning device;

[0048] 1. Tensioner; 11. Engagement groove;

[0049] 2. Stretcher;

[0050] 21. Fixed parts;

[0051] 22. Rotating parts;

[0052] 221, main body; 222, hole; 223, toggle portion; 2231, first surface; 2232, second surface; 2233, connecting surface; 224, cam; 2241, convex portion;

[0053] 23. Connect components;

[0054] 231, rotating shaft; 2311, slot; 232, first connecting piece; 2321, supporting plate; 2322, shaft hole; 233, second connecting piece; 234, snap-fit ​​piece. DETAILED DESCRIPTION

[0055] The patent is described in detail below in conjunction with the accompanying drawings.

[0056] Implementation Method 1

[0057] In the prior art, in order to make the tensioner realize the tensioning function, an external force is generally directly applied to the tensioner, so that the tensioner is pre-contracted and then placed on the skin and the external force is released, thereby tensioning the skin with the elastic force of the tensioner itself. However, since it is difficult to control the direction and strength of the applied external force, when the tensioner that has been contracted by the external force is released, the edges of the tensioner often shift during the expansion process, resulting in uneven skin stretching and poor tensioning effect.

[0058] In addition, existing tensioners generally do not have a range limit for contraction or expansion. During the pre-contraction or expansion process, the movement range of each side of the tensioner is uneven, which can also cause uneven stretching of the skin in the surgical area. When the external force applied to the tensioner is uneven or the strength of the external force is too large, the tensioner without a stretching range limit will not be able to withstand forces outside the stretching direction or forces with excessive strength, which will shorten the life of the components or cause damage to the components.

[0059] In view of the above problems, this embodiment proposes a new skin tensioning device A, wherein the stretcher 2 provides a stable movement route for the expansion of the tensioner 1, and can improve the uniformity and stability of the skin stretching by the tensioner 1, so as to solve one or more of the above problems. Specifically:

[0060] See also Figure 1 As shown, the skin tensioning device A of this embodiment includes:

[0061] Tensioner 1 and stretcher 2, tensioner 1 is connected with stretcher 2;

[0062] The stretcher 2 includes:

[0063] A fixing member 21;

[0064] A rotating member 22, the rotating member 22 abuts against the fixed member 21 and can rotate with an axis parallel to the fixed member 21 as a rotation axis;

[0065] A connecting assembly 23, the connecting assembly 23 connects the tensioner 1 and the rotating member 22;

[0066] The rotating member 22 can drive the connecting assembly 23 to move during the rotation process, so that the tensioner 1 can expand.

[0067] In the skin tensioning device A, the tensioner 1 is connected to the stretcher 2. Specifically, the rotating component abuts against the fixed component 21, the connecting component 23 can be hinged to the rotating component 22, and one end of the connecting component 23 can be passed through the tensioner 1.

[0068] The rotating member 22 is in contact with the fixed member 21, and the rotating member 22 can rotate with an axis parallel to the fixed member 21 as the rotation axis. In other words, the rotating member 22 performs rotational motion around an axis, and the axis is kept parallel to the fixed member 21, so that during the rotational motion of the rotating member 22, the position of the rotation axis may move relative to the fixed member 21, but a part of the outer peripheral surface of the rotating member 22 is always in contact with the fixed member 21. The outer peripheral surface of the rotating member 22 is arranged in contact with the fixed member 21, and the rotation axis of the rotating member 22 can be limited to be parallel to the contact point. The external forces in various directions applied to the rotating member 22 that are not perpendicular to the contact surface between the fixed member 21 and the rotating member 22 are offset by the reaction force of the fixed member 21, and finally only the external force component perpendicular to the fixed member 21 remains, and the external force perpendicular to the fixed member 21 drives the rotating member 22 to perform rotational motion around the axis. In other words, by setting the outer circumferential surface of the rotating member 22 in contact with the fixed member 21, the external force acting on the rotating member 22 will drive the rotating member 22 to rotate with an axis parallel to the fixed member 21 as the rotation axis, so that the force acting on the connecting component during the rotation of the rotating member 22 is unidirectional and stable.

[0069] Under the action of external force, the rotating member 22 can be pushed and rotated, and the rotating member 22 can drive the connecting assembly 23 connected thereto to move during the rotation process, thereby driving the tensioner 1 to expand. In other words, the present device can convert the rotating motion of the rotating member 22 into the expansion motion of the tensioner 1 through the connecting assembly 23. It can be seen from the above that the rotation axis of the rotating member 22 is always parallel to the fixed member 21, so that the movement path and movement direction of the rotating member 22 relative to the fixed member 21 remain stable, and further, the traction force received by the connecting assembly 23 connected to the rotating member 22 can be unidirectional and stable, and can move along a stable path, driving the tensioner 1 to expand or contract stably.

[0070] Compared with the prior art, the skin tensioning device A disclosed in this embodiment has the following technical effects:

[0071] 1. The movement of the connecting assembly 23 is driven by the rotation of the rotating member 22, that is, the external force directly acts on the rotating member 22 and indirectly drives the tensioner 1 to move; compared with the external force directly acting on the tensioner 1, the indirect action method can avoid the unstable external force directly affecting the movement of the tensioner 1, so that the tensioner 1 can stably expand or contract along a predetermined path.

[0072] 2. The movement of the connecting assembly 23 is driven by the rotation of the rotating member 22, that is, the movement of the connecting assembly 23 can be controlled by controlling the rotation angle of the rotating member 22, thereby controlling the movement of the tensioner 1. The distance moved by the connecting assembly 23 can be deduced by observing or calculating the rotation angle of the rotating member 22, and the distance moved by the connecting assembly 23 can be limited by limiting the rotation angle of the rotating member 22. In this way, the rotation angle of each rotating member 22 in the skin tensioning device A can be limited to keep the stretched distances of the tensioner 1 consistent, so as to achieve uniform stretching of the skin in the surgical area. In addition, compared with the control method of linear motion, the indirect control of the movement of the rotating member makes the control of the rotational motion more controllable and intuitive.

[0073] 3. The outer peripheral surface of the rotating member 22 is arranged in contact with the fixed member 21, so that the external forces in various directions acting on the rotating member 22 will drive the rotating member 22 to rotate with an axis parallel to the fixed member 21 as the rotation axis, so that the force acting on the connecting assembly 23 during the rotation of the rotating member 22 is unidirectional and stable. The rotating member 22 can withstand external forces in various directions, and the fixed member 21 can unify the external forces in various directions on the rotating member 22 abutting against the fixed member into an external force perpendicular to the abutting surface, so that the movement of the rotating member 22 is stable, and then the rotating member 22 can stably drive the connecting assembly 23 to move.

[0074] 4. The rotating member 22 arranged as above does not rely on mechanical adjustment, and can be directly rotated and adjusted manually, thereby driving each side 1 of the tensioner to perform expansion movement, which is convenient and efficient to operate, and can shorten the time spent on the surgical process.

[0075] It is worth mentioning that, depending on the specific mode of action, the rotating member 22 can exist in two forms:

[0076] The first form: the rotating member 22 changes the relative distance between it and the fixed member 21 by rotating, thereby driving the tensioner 1 to expand. Specifically, the rotating member 22 is connected to the tensioner 1 through the connecting assembly 23, so that the positions between the rotating member 22 and the tensioner 1 are relatively fixed. When the rotating member 22 abuts against the fixed member 21 and rotates, the distance between the rotating member 22 and the fixed member 21 increases, thereby driving the tensioner 1 to move relative to the fixed member 21.

[0077] For example, the rotating member 22 may include a roller and a gear disposed on the roller, the gear and the roller rotate synchronously, and the connecting assembly 23 is connected to the roller. In addition, a rack fixed relative to the fixed component 21 is provided, and the gear on the roller meshes with the rack. When the roller rotates, the gear meshed with the rack drives the roller to move along the rack, so that the rotating member 22 drives the tensioner 1 to expand through the connecting assembly 23.

[0078] By adding a rack, the gear on the rotating member 22 can move along the rack by rotating, thereby driving the connecting component 23 and the tensioner 1 to move. While accurately controlling the expansion range of the tensioner 1, the gear rack transmission mechanism works smoothly and reliably, which can extend the service life of the components.

[0079] The second form: the rotating shaft 231 of the rotating member 22 is fixed relative to the fixed member 21, and the rotating member 22 causes the connecting assembly 23 to move by rotating, thereby driving the tensioner 1 to expand. Specifically, the rotating shaft 231 of the rotating member 22 is fixed relative to the fixed member 21, and the connecting assembly 23 is movably connected to the rotating member 22 and can move relative to the rotating member 22. When the rotating member 22 rotates, the rotational motion of the rotating member 22 is converted into the movement of the connecting assembly 23, so that the connecting assembly 23 drives the tensioner 1 to expand.

[0080] For example, see Figure 7 As shown, the rotating member 22 may be a cam 224, and the connecting assembly 23 and the rotating member 22 together constitute a cam 224 mechanism. The cam 224 is disposed in the connecting assembly 23, and the cam 224 abuts against the follower of the connecting assembly 23. When the convex portion 2241 of the cam 224 is not pushed, the fan-shaped portion of the cam 224 abuts against the follower, and the follower does not move; when the convex portion 2241 of the cam 224 rotates to abut against the follower, the follower begins to be pushed by the convex portion 2241 of the cam 224 and moves relative to the fixed component 21, so as to drive the tensioner 1 connected to the connecting assembly 23 to move.

[0081] By setting the rotating assembly and the connecting assembly 23 as a cam 224 mechanism, the rotation of the cam 224 drives the movement of the connecting assembly 23, and the expansion distance of the tensioner 1 can be accurately controlled. At the same time, the cam 224 mechanism has a simple structure, strong durability, and is easy to manufacture and maintain. Exemplarily, in the skin tensioning device A, the number of tensioner 1 edges is the same as the number of stretchers 2 and corresponds one to one, and the number of stretchers 2 is greater than or equal to 2. For example, each edge of the tensioner 1 is connected to a stretcher 2, and when the number of stretchers 2 is two, the two edges of the tensioner 1 can be arranged relative to each other to stretch the skin of the surgical area from opposite directions; when the number of stretchers 2 is greater than or equal to 3, the multiple edges of the tensioner 1 can stretch the skin of the surgical area from multiple directions, so that the skin of the surgical area is fully extended in multiple directions in the plane.

[0082] Implementation Method 2

[0083] This embodiment is a further improvement based on the first embodiment. This embodiment also proposes a skin tensioning device A, and further provides new structural features of the connecting component 23 and the rotating member 22 and a method for realizing the stretching function, so that the rotating member 22 can drive the connecting component 23 to move more smoothly and accurately. In the first connection form of the first embodiment, the rotating member 22 changes the relative distance between it and the fixed member 21 by rotating, thereby driving the tensioner 1 to expand. This embodiment first further expands this connection form. Specifically:

[0084] See also Figure 2 As shown, the connecting assembly 23 of the skin tensioning device A comprises:

[0085] Rotation axis 231;

[0086] A first connecting member 232, one end of which is connected to the rotating shaft 231, and the other end of which is connected to the tensioner 1;

[0087] The rotating member 22 is sleeved on the rotating shaft 231 and rotates along with the rotating shaft 231;

[0088] The outer wall of the rotating member 22 abuts against the fixed member 21 . During the rotation, the distance between the rotating shaft 231 and the portion of the rotating member 22 abutting against the fixed member 21 changes, so that the first connecting member 232 is driven to move through the rotating shaft 231 .

[0089] The connecting assembly 23 may include a rotating shaft 231 and a first connecting member 232. The rotating shaft 231 is sleeved in the rotating member 22 and coincides with the rotating axis of the rotating member 22. It can be understood that the rotating member 22 rotates around the rotating shaft 231. One end of the first connecting member 232 is connected to the rotating shaft 231, and the other end is connected to the tensioner 1. When the rotating member 22 rotates, the rotating shaft 231 in the rotating member 22 can drive the first connecting member 232 to move, and drive the tensioner 1 to move through the first connecting member 232. The principle of the rotating member 22 rotating to drive the connecting assembly 23 to move is as follows:

[0090] The outer wall of the rotating member 22 abuts against the fixed member 21. During the rotation of the rotating member 22, the position where the rotating member 22 abuts against the fixed member 21 is set as the abutment point. The distance between the rotating shaft 231 and the abutment point changes with the rotation of the rotating member 22. When the distance between the rotating shaft 231 and the abutment point changes, the first connecting member 232 connected to the rotating shaft 231 moves accordingly, thereby expanding the tensioner 1.

[0091] In some embodiments, the first connecting member 232 can be passed through the fixed component 21, so that when the first connecting member 232 is driven by the rotating shaft 231, it is limited by the fixed component 21 to only perform linear motion. This can make the tensioner 1 connected to the first connecting member 232 also perform expansion motion in a linear direction, making the skin tensioning device A more stable in stretching the skin.

[0092] In some other embodiments, the first connecting member 232 can avoid the fixed part 21 and be connected to a limiting member (not shown) used to limit the first connecting member 232. The limiting member can enable the first connecting member 232 to move along a set path, and the movement path of the first connecting member 232 can be changed by changing the position of the limiting member relative to the fixed part 21 and the setting method of the limiting member to adapt to different types of tensioners. The setting of the limiting member can improve the adaptability of the skin tensioning device A to various types of tensioners and can stretch the tensioner in a flexible manner.

[0093] In order to enable the rotating member 22 to drive the rotating shaft 231 to move relative to the fixed member 21 during the rotation process, this embodiment further proposes the structure of the main body 221 and the hole 222 of the rotating member 22. The eccentrically arranged hole 222 can accommodate the rotating shaft 231, and the rotating shaft 231 is used to eccentrically rotate in the rotating member 22 to drive the connecting assembly 23 to move. Specifically,

[0094] See also Figure 3 and Figure 4 As shown, the rotating member 22 of the skin tensioning device A comprises:

[0095] The main body 221 has a rotating body structure;

[0096] A hole 222 is provided on the main body 221 and is used to accommodate the rotating shaft 231;

[0097] The hole 222 is located at a position of the main body 221 that deviates from the geometric center, so that when the rotating member 22 rotates eccentrically along the rotating axis 231 , the distance between the rotating axis 231 and the fixing component 21 changes.

[0098] The rotating member 22 may include a main body 221 and a hole 222 , wherein the main body 221 has a rotating body structure, which refers to a three-dimensional geometric figure formed by a plane curve rotating with a straight line in the same plane as a rotating axis 231 . The rotating body structure abuts against the fixed component 21 .

[0099] The hole 222 is provided on the column and is used to accommodate the rotating shaft 231. The hole 222 is located at a position of the main body 221 that deviates from the geometric center, that is, the hole 222 is eccentrically provided on the main body 221, and the axis of the hole 222 can be parallel to the rotating axis, so that when the rotating member 22 rotates eccentrically along the rotating shaft 231, the distance of the rotating shaft 231 relative to the fixed member 21 changes. Specifically, when the rotating shaft 231 is closest to the fixed member 21, the tensioner 1 connected to the first connecting member 232 is in an unstretched state, and when the rotating shaft 231 is farthest from the fixed member 21, the tensioner 1 connected to the first connecting member 232 is stretched to the farthest distance.

[0100] The main body 221 with the rotating body structure can reduce the contact friction between the rotating body and the fixed component 21, and efficiently rotate on the abutting fixed component 21. The eccentrically arranged hole 222 facilitates the displacement of the rotating member 22 relative to the fixed component 21 and drives the connecting assembly 23 to move.

[0101] The rotating surface of the main body 221 of the rotating member 22 is relatively smooth. If external force is directly applied to the rotating surface, it is easy to slip. This embodiment proposes a toggle portion 223 arranged on the main body 221 of the rotating member 22, which can be used as a force application point for the external force to assist the external force in rotating the rotating member 22.

[0102] See also Figure 3 and Figure 5 As shown, the rotating member 22 of the skin tensioning device A also includes:

[0103] The toggle portion 223 is connected to the main body 221 and is used to withstand external force to rotate the rotating member 22;

[0104] The toggle portion 223 has:

[0105] A first surface 2231 extending along a tangent line of a side surface of the main body 221;

[0106] The second surface 2232 is arranged parallel to the first surface 2231 and is also connected to the side surface of the main body 221;

[0107] The connecting surface 2233 connects the first surface 2231 and the second surface 2232 respectively, and the connecting surface 2233 is a part of the surface of the cylinder.

[0108] The rotating member 22 may further include a toggle portion 223, which has a first surface 2231, a second surface 2232 and a connecting surface 2233. The toggle portion 223 is disposed on the main body 221, and the rotating member 22 may be rotated by applying an external force to the toggle portion 223. The first surface 2231 of the toggle portion 223 extends along a tangent line of the side surface of the main body 221, and the second surface 2232 is parallel to the first surface 2231 and is disposed on the inner side closer to the main body 221. The connecting surface 2233 connects the first surface 2231 and the second surface 2232, and the connecting surface 2233 is disposed as a part of the surface of a cylinder. The first surface 2231, the second surface 2232 and the connecting surface 2233 together constitute a protruding toggle portion 223 that is tangent to the peripheral surface of the main body 221.

[0109] The connecting surface 2233 is a part of the surface of the cylinder, and the smooth curved surface is conducive to reducing the friction with the outside world and reducing the wear of the components. The entire toggle portion 223 provides a force application point for the external force, which is more convenient and efficient than applying the external force directly on the main body 221.

[0110] Based on the connection relationship and functions of the various components of the skin tensioning device A, in a specific application scenario, the tensioning function of the skin tensioning device A is implemented as follows:

[0111] 1. Place the skin tensioning device A on the skin of the surgical area, so that the tensioner 1 is in contact and engaged with the surface of the skin of the surgical area, and the tensioner 1 can drive the skin of the surgical area to stretch;

[0112] 2. When the skin tensioning device A starts to be tensioned, an external force is applied to the toggle portion 223 of the rotating member 22, so that the rotating member 22 abuts against the fixed member 21 and rotates around the rotating shaft 231. During the rotation of the rotating member 22, the distance between the rotating shaft and the fixed member 21 increases, and the first connecting member 232 is driven to move, so that the tensioner 1 connected to the first connecting member 232 begins to expand, stretching the skin in the surgical area, and after the stretching is completed, the skin in the surgical area is operated on;

[0113] 3. After the operation is completed, the force applied to the toggle part 223 is released, or a force in the rotation direction is applied to the toggle part 223 to make the rotating member 22 rotate in the opposite direction, and the distance between the rotating shaft and the fixed member 21 is reduced. The first connecting member 232 and the tensioner 1 connected to the first connecting member 232 are reset accordingly. At this time, the skin is no longer stretched and begins to return to its original state.

[0114] Fourth, after all stretchers 2 are restored to the state before stretching, the skin tensioning device A is withdrawn from the vertical direction of the skin in the surgical area, and the current surgical process is ended.

[0115] The above implementation method of the skin tensioning device A can make the tensioner 1 fit the skin of the surgical area. Even if the stretchers 2 do not stretch synchronously at the same time, by ensuring that the rotating member 22 rotates at the same angle, the final stretching amplitude of each stretcher 2 can be kept consistent, and finally the skin tensioning device A can stretch the skin of the surgical area uniformly. The controllability of the skin tensioning device A is improved, and the difficulty of surgical operation is reduced.

[0116] Implementation Method 3

[0117] This embodiment is a further improvement on the second embodiment, and its improvement lies in that a new skin tensioning device A is provided, and the first connecting member 232 is connected to the tensioner 1 through the cooperation between the support plate 2321 and the fitting groove 11, so that the connection between the first connecting member 232 and the tensioner 1 is more stable, and it is convenient for the first connecting member 232 to drive the tensioner 1 to move. Specifically,

[0118] See also Figure 6 As shown, a support plate 2321 is provided at one end of the first connecting member 232 of the skin tensioning device A, and an engaging groove 11 which is in line with the shape of the support plate 2321 is provided on the inner side of each side of the tensioner 1, and the support plate 2321 is engaged in the engaging groove 11.

[0119] One end of the first connecting member 232 connected to the tensioner 1 is provided with a support plate 2321, and an interlocking groove 11 interlocking with the shape of the support plate 2321 is provided on the inner side of each edge of the tensioner 1, and the support plate 2321 is interlocked in the interlocking groove 11. When the first connecting member 232 is driven to move outward by the rotating member 22, the support plate 2321 is subjected to the pulling force from the first connecting member 232, and pushes the edge of the tensioner 1 to move outward through the interlocking groove 11. The cooperation between the support plate 2321 and the interlocking groove 11 can prevent shaking or misalignment between the first connecting member 232 and the tensioner 1, thereby improving the stability of the stretching function of the tensioner 2.

[0120] Only the first connecting member 232 is connected to the tensioner 1, which only produces one connection fulcrum. In actual use, the edge where the tensioner 1 is connected to the first connecting member 232 may rotate around the first connecting member 232, resulting in stretching deviation. Therefore, it is possible to consider adding another connecting member to connect to the tensioner 1 to form two connection fulcrums on one side of the tensioner 1 to avoid offset.

[0121] Specifically, see Figure 2 and Figure 6 As shown, the connecting assembly 23 of the skin tensioning device A further includes a second connecting member 233, and the second connecting member 233 and the first connecting member 232 are respectively connected to both sides of the rotating shaft 231;

[0122] The second connecting member 233 and the first connecting member 232 both pass through the fixing component 21 and are connected to the tensioner 1 .

[0123] The skin tensioning device A may further include a second connecting member 233, the second connecting member 233 and the first connecting member 232 are respectively on both sides of the rotating shaft 231, the second connecting member 233 and the first connecting member 232 are both arranged through the fixing member 21, and are jointly connected to the edge of the tensioner 1. Specifically, the second connecting member 233 and the first connecting member 232 may be arranged in parallel, and both are arranged perpendicular to the rotating shaft, and a support plate 2321 may also be arranged at one end of the second connecting member 233 connected to the tensioner 1, and the support plate 2321 cooperates with the corresponding fitting groove 11 on the tensioner 1, and the first connecting member 232 and the second connecting member 233 can move in the fixing member 21 through which they are arranged, and jointly stretch the edge of the tensioner 1 through the support plate 2321.

[0124] When the rotating member 22 drives the rotating shaft to rotate, the first connecting member 232 and the second connecting member 233 on both sides of the rotating shaft are driven by the rotating shaft and move relative to the fixed member 21. The tensioner 1 connected to the first connecting member 232 and the second connecting member 233 moves toward the direction close to the fixed member 21 under the action of the support plate 2321, thereby achieving the stretching of the tensioner 1.

[0125] The first connecting member 232 and the second connecting member 233 arranged as above can ensure that the edge of the tensioner 1 connected to the two remains relatively parallel to the fixing member 21, and rotation around the connecting part will not occur, so that each edge of the tensioner 1 can remain roughly parallel to the skin of the surgical area and evenly stretch the skin of the surgical area.

[0126] There are many ways to connect the first connecting member 232 and the rotating shaft 231, such as opening a threaded hole on one end face of the rotating shaft 231, and bolting the first connecting member 232 to the end face; or, sleeve the rotating shaft 231 in a through hole opened on the first connecting member 232. The bolt connection method has a large friction force, which will accelerate the wear between the first connecting member 232 and the rotating shaft 231. Relatively speaking, the method of sleeve the rotating shaft 231 in the first connecting member 232 has a smaller friction. To this end, this embodiment improves the latter of the above two solutions.

[0127] Specifically, see Figure 6 As shown, the first connecting member 232 of the skin tensioning device A is provided with an axial hole 2322, the rotating shaft 231 is provided through the axial hole 2322, and a slot 2311 is provided at the portion where the rotating shaft 231 passes through the axial hole 2322, and the connecting assembly 23 further includes:

[0128] The clamping member 234 is disposed on the clamping slot 2311 so as to restrict the first connecting member 232 between the clamping slot 2311 and the rotating member 22 .

[0129] The first connecting member 232 may be provided with an axial hole 2322, and the connecting assembly 23 further includes a clamping member 234. The rotating shaft 231 is provided through the axial hole 2322, and the portion of the rotating shaft 231 passing through the axial hole 2322 is provided with a clamping groove 2311, and the clamping member 234 is provided on the clamping groove 2311 so as to restrict the first connecting member 232 between the clamping groove 2311 and the rotating member 22, so as to prevent the rotating shaft 231 from slipping out of the axial hole 2322, or to prevent the first connecting member 232 from being separated from the rotating shaft 231.

[0130] In the case where the first connecting rod is limited to move only in a linear direction by the fixed component 21 through which it is passed, when the rotating member 22 rotates, the rotating shaft 231 will be driven to move in a linear direction, the rotating shaft 231 can rotate together with the rotating member 22, and the rotating shaft 231 can rotate in the shaft hole 2322 of the first connecting member 232 without affecting the movement of the first connecting member 232 in the linear direction.

[0131] As can be seen from the above, the skin tensioning device can control the moving distance of the connecting component 23 and thus the moving distance of the tensioning member by controlling the rotating angle of the rotating member 22. Accordingly, the present embodiment further improves the rotating shaft 231 or the rotating member 22 to achieve the function of limiting the moving distance of the connecting component 23 by limiting the rotating angle of the rotating member 22.

[0132] In addition, the outer wall of the rotating shaft 231 includes at least one arcuate surface and at least one plane connected to the arcuate surface. The hole 222 of the rotating member 22 matches the cross-sectional shape of the rotating shaft 231. The plane set on the outer wall of the rotating shaft 231 is used to assist in preventing the rotating member 22 from resetting.

[0133] In some embodiments, the rotating member 22 can rotate relative to the rotating shaft 231. The outer side wall of the rotating shaft 231 includes an arcuate surface and a plane connected to the arcuate surface. The hole 222 of the rotating member 22 matches the cross-sectional shape of the rotating shaft 231, that is, the inner wall surface of the hole 222 has an arcuate surface and a plane corresponding to the outer side wall of the rotating shaft 231. The arcuate surface on the rotating shaft 231 is used to match the hole 222 to determine the rotation axis of the rotating member 22; and the plane on the rotating shaft 231 is used to limit the rotation angle of the rotating member 22. Specifically, when the arc surface of the rotating shaft 231 abuts against the plane on the hole 222, the hole 222 and the rotating shaft 231 are in line contact, the friction surface is small, so that the friction force of the contact surface is small, and the rotating member 22 can rotate relative to the rotating shaft 231; when the plane of the rotating shaft 231 is opposite to the plane on the hole 222, because the radius of the arc surface of the rotating shaft 231 is greater than the distance from the plane in the hole 222 to the axis of the hole 222, when the rotating shaft 231 continues to rotate so that the plane of the rotating shaft 231 rotates from the state opposite to the plane on the hole 222 to the state opposite to the arc surface on the hole 222, a large force needs to be provided to force the rotating shaft 231 or the hole 222 to deform. In other words, when the arc surface of the rotating shaft 231 is opposite to the plane of the hole 222, the rotating member 22 can rotate relative to the rotating shaft 231, but when the plane of the rotating shaft 231 is opposite to the plane of the hole 222, the rotating member 22 needs to be under the action of external force to continue to rotate. By means of such arrangement, the rotation angle of the rotating member 22 is controlled.

[0134] Implementation Method 4

[0135] This embodiment is a further improvement on the first embodiment, and improves the fixing part 21, wherein the chassis of the fixing part 21 provides support for the stretcher 2, and the retaining wall of the fixing part 21 is used to abut against the rotating part 22. The improved fixing part 21 strengthens the structural strength of the skin tensioning device A and improves the structural stability. Specifically:

[0136] See also Figures 1 to 3 As shown, the fixing part 21 of the skin tensioning device A comprises:

[0137] chassis, used to provide support;

[0138] A retaining wall is arranged on the chassis, and the rotating member 22 abuts against the retaining wall;

[0139] An opening is provided on the chassis at a position corresponding to the rotating member 22 , and the opening is used to avoid the rotating member 22 .

[0140] The fixed component 21 may include a chassis and a baffle wall, and an opening is provided on the chassis. The chassis may provide support for the stretcher 2, and the baffle wall may be vertically provided on the chassis, and the connecting assembly 23 may be provided on the baffle wall. Specifically, the rotating member 22 may abut against the baffle wall of the fixed component 21, and the first connecting member 232 and the second connecting member 233 may also be passed through the baffle wall, and when the rotating member 22 rotates, the connecting assembly 23 is driven to rotate relative to the baffle wall. The opening on the chassis is used to avoid the rotating member 22, so that the rotating member 22 avoids interference with the chassis while rotating. The chassis is provided to accommodate and carry the stretcher 2, so that the stretcher 2 can perform the stretching function on the tensioner 1 in a stable structure, thereby enhancing the stability of the overall structure of the skin tensioning device A.

[0141] Optionally, a positioning member may be provided on the chassis, and the positioning member is arranged around the outside of the tensioner 1. The positioning member can be used for positioning, alignment and connection of other equipment, so that other equipment can operate the tensioner 1, or protect the internal components of the positioning member.

[0142] The shape of the positioning member can be set in various forms according to the different ways of connecting the equipment. The shape can be set as an annular wall, a straight wall, or a straight wall with a folded angle. For example, when the positioning member is set as a part of the annular wall, multiple positioning members can be evenly distributed around the tensioner 1 on the same circular ring of the chassis, which can protect the internal tensioner 1 and other components. In addition, the number of positioning members can correspond to the number of edges of the tensioner 1 to ensure the force balance of the connection with other equipment. Similarly, positioning members in the form of straight walls and folded angle walls can also be arranged around the tensioner 1 on the chassis, which can protect the internal components while adapting to the connection shape of the connecting device.

[0143] Finally, it should be noted that ordinary technicians in this field can understand that in order to make readers better understand this patent, the implementation methods of this patent propose many technical details. However, even without these technical details and various changes and modifications based on the above-mentioned implementation methods, the technical solutions claimed for protection by the claims of this patent can be basically realized. Therefore, in practical applications, various changes can be made to the above-mentioned implementation methods in form and details without departing from the spirit and scope of this patent.

Claims

1. A skin tensioning device, characterized in that: include: A tensioner and a stretcher, wherein the tensioner is connected to the stretcher; The stretcher comprises: Fixed parts; a rotating member, the rotating member abutting against the fixed member and capable of rotating about an axis parallel to the fixed member as a rotation axis; a connecting assembly, the connecting assembly connecting the tensioner and the rotating member; The rotating member can drive the connecting assembly to move during the rotation process, so that the tensioner expands; The fixing member comprises: chassis, used to provide support; A retaining wall is arranged on the chassis, and the rotating member abuts against the retaining wall; The connection component comprises: Axis of rotation; a first connecting member, one end of which is connected to the rotating shaft, and the other end of which is connected to the tensioner; The rotating member is sleeved on the rotating shaft and rotates along with the rotating shaft; The outer wall of the rotating member abuts against the fixed member. During the rotation, the distance between the rotating shaft and the portion of the rotating member abutting against the fixed member changes, so that the first connecting member is driven to move through the rotating shaft.

2. The skin tensioning device according to claim 1, characterized in that: The rotating member comprises: The main body has a rotating body structure; a hole, provided on the main body, for accommodating the rotating shaft; The hole is located at a position of the main body that deviates from the geometric center, so that when the rotating member rotates eccentrically along the rotating axis, the distance between the rotating axis and the fixed component changes.

3. The skin tensioning device according to claim 2, characterized in that: The rotating member also includes: A toggle portion, connected to the main body, used to withstand external force to rotate the rotating member; The toggle portion has: a first surface extending along a tangent line of a side surface of the body; a second surface disposed parallel to the first surface and also connected to the side surface of the body; A connecting surface connects the first surface and the second surface respectively, and the connecting surface is a part of the surface of the cylinder.

4. The skin tensioning device according to claim 1, characterized in that: A support plate is provided at one end of the first connecting member, and an engaging groove which is engaged with the shape of the support plate is provided on the inner side of each edge of the tensioner, and the support plate is engaged in the engaging groove.

5. The skin tensioning device according to claim 4, characterized in that: The connecting assembly further includes a second connecting member, wherein the second connecting member and the first connecting member are respectively connected to two sides of the rotating shaft; The second connecting member and the first connecting member both pass through the fixing component and are connected to the tensioner.

6. The skin tensioning device according to claim 5, characterized in that: The first connecting member is provided with an axial hole, the rotating shaft is arranged through the axial hole, a slot is provided at the position where the rotating shaft passes through the axial hole, and the connecting assembly further comprises: A clamping member is arranged on the clamping slot so as to restrict the first connecting member between the clamping slot and the rotating member.

7. The skin tensioning device according to claim 6, characterized in that: The outer side wall of the rotating shaft includes at least one arcuate surface and at least one plane connected to the arcuate surface. The hole of the rotating member matches the cross-sectional shape of the rotating shaft. The plane arranged on the outer side wall of the rotating shaft is used to assist in blocking the resetting of the rotating member.

8. The skin tensioning device according to claim 1, characterized in that: An opening is provided on the chassis at a position corresponding to the rotating member, and the opening is used to avoid the rotating member.

9. The skin tensioning device according to any one of claims 1 to 8, characterized in that: The number of the tensioner sides is the same as the number of the stretchers and corresponds one to one, and the number of the stretchers is greater than or equal to 2.

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