Skin thinning device

Abstract

The present invention relates to the technical field of medical auxiliary equipment, and in particular to a skin thinning device, comprising a support frame with a cavity in the middle, a fixing mechanism arranged on the support frame and used to fix skin tissue, at least one cutting mechanism arranged above the fixing mechanism and slidably arranged on the support frame, and a power mechanism arranged on the support frame and connected to the cutting mechanism. The device has the advantages of simple structure, convenient operation, time saving and labor saving, etc., greatly reduces the operating difficulty of medical staff, improves the skin thinning effect and thinning efficiency, and greatly shortens the operation time.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a skin thinning device. Background Art

[0002] With the rapid progress of modern society, large-area skin degloving and destruction caused by traffic trauma and industrial injury are common soft tissue injuries in emergency. The limited amount of autologous skin, the excessive damage to the donor area caused by the dermatome, which causes great pain to the patient, and the high price of artificial skin are all existing technical limitations. The first choice for emergency treatment of large-area degloving injuries is debridement, skin thinning and replantation; while for small-area irregular skin defects, in order to avoid the shortcomings of large skin removal range of the dermatome and excessive damage to the patient's donor area, a small flap will be selected for local skin removal, thinning and grafting. Thinning methods are mostly manual thinning, which is not only time-consuming, labor-intensive, and uneven thinning thickness, but also greatly prolongs the operation time and increases the risk of infection and skin ischemia and necrosis in patients. It is a test of perseverance and physical strength for surgeons. Summary of the invention

[0003] Features and advantages of the invention are set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.

[0004] In order to solve the shortcomings of the manual thinning method of skin flap in the prior art, such as being time-consuming, labor-intensive, and having uneven thinning thickness, the present invention provides a skin thinning device, including a support frame with a cavity in the middle, a fixing mechanism disposed on the support frame and used to fix skin tissue, at least one cutting mechanism disposed above the fixing mechanism and slidably disposed on the support frame, and a power mechanism disposed on the support frame and connected to the cutting mechanism.

[0005] Preferably, the fixing mechanism comprises at least two clamping members symmetrically arranged on the inner edge of the supporting frame.

[0006] Preferably, the fixing mechanism further comprises a connecting member which is arranged between the clamping member and the supporting frame and has an adjustable length.

[0007] Preferably, the cutting mechanism comprises a slide bar slidably arranged on the top of the support frame, a knife seat slidably arranged on the slide bar, and a blade detachably arranged on the knife seat.

[0008] Preferably, the cutting mechanism further comprises at least one connecting base which is arranged at the end of the sliding rod and is slidably arranged on the supporting frame.

[0009] Preferably, the cutting mechanism further comprises an angle adjustment component arranged on the slide rod.

[0010] Preferably, the angle adjustment assembly includes a first rack provided at the end of the sliding rod and along the outer wall of the sliding rod, a first gear meshing with the first rack, a support frame provided at the edge of the support frame and having a through hole on the top, a transmission shaft provided at the center of the first gear and passing through the through hole, a rotating knob fixed on the transmission shaft for controlling the rotation angle, a spring sheet having one end fixed to the support frame and symmetrically fixed to both sides of the rotating knob, and a ratchet provided at the far end of the spring sheet and preventing the first gear from reversing.

[0011] Preferably, the power mechanism includes at least one set of first slide grooves symmetrically arranged on the support frame, and a sliding assembly connected to the end of the cutting mechanism and controlling the reciprocating motion of the cutting mechanism in the first slide groove.

[0012] Preferably, the first slide groove is L-shaped.

[0013] Preferably, the sliding assembly comprises a second gear connected to the end of the cutting mechanism, a second rack meshing with the second gear and arranged at the bottom of the slide groove, a third gear meshing with the second gear, and a rocker connected to the output shaft of the third gear;

[0014] or;

[0015] The sliding assembly includes a second sliding groove arranged at the bottom of the first sliding groove, an I-shaped seat connected to the end of the cutting mechanism and slidably connected to the second sliding groove, and a push rod whose bottom is connected to the I-shaped seat and extends out of the first sliding groove.

[0016] The beneficial effects of the present invention are as follows: the support frame provides a stable support base for the entire device, effectively preventing sliding during the cutting process. The skin is effectively fixed by the fixing mechanism to prevent skin curling, and to prevent secondary damage caused by squeezing the skin during the cutting process, thereby increasing the skin survival rate. Thinning the skin by at least one cutting mechanism is not only fast, but also greatly reduces the workload of medical staff. The cutting operation is driven by the cutting mechanism through a power mechanism, which saves time and effort, and the cutting force is stable, thereby preventing secondary damage to the skin and increasing the skin survival rate. The device has the advantages of simple structure, convenient operation, time and effort saving, and low cost, and greatly reduces the difficulty of operation for medical staff, improves the skin thinning effect and efficiency, and greatly shortens the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with examples, and the advantages and implementation methods of the present invention will become more obvious. The contents shown in the accompanying drawings are only used to explain the present invention and do not constitute any limitation to the present invention in any sense. In the accompanying drawings:

[0018] Figure 1is a schematic diagram of a skin thinning device in a specific embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of a power mechanism of a skin thinning device in a specific embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a cutting mechanism of a skin thinning device in a specific embodiment of the present invention;

[0021] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0022] Support frame-100, fixing mechanism-200, clamping member-210, connecting member-220, cutting mechanism-300, sliding rod-310, knife seat-320, first U-shaped groove-321, limiting member-322, blade-330, fixing plate-331, connecting base-340, fixing frame-341, spring-342, sliding sleeve-343, fixing groove-344, angle adjustment assembly-350, first rack-351, first gear-352, supporting frame-353, transmission shaft-354, rotating knob-355, spring-356, power mechanism-400, first sliding groove-410, sliding assembly-420, second gear-421, third gear-422, second rack-423, rocker-424, fixing sleeve-425, push rod-426. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figures 1 to 3 As shown, the present invention provides a skin thinning device, characterized in that it includes a support frame 100 with a cavity in the middle, a fixing mechanism 200 arranged on the support frame 100 and used to fix skin tissue, at least one cutting mechanism 300 arranged above the fixing mechanism 200 and slidably arranged on the support frame 100, and a power mechanism 400 arranged on the support frame 100 and connected to the cutting mechanism 300. The support frame 100 provides a stable support base for the entire device, effectively preventing sliding during the cutting process, improving the cutting stability of the cutting mechanism 300, and effectively preventing secondary damage to the skin. The skin can be effectively fixed by the fixing mechanism 200, which can prevent skin curling and secondary damage caused by squeezing the skin during the cutting process, thereby increasing the survival rate of the skin. The thinning process of the skin by at least one cutting mechanism 300 is not only fast, but also greatly reduces the work intensity of medical staff. The power mechanism 400 drives the cutting mechanism 300 to perform the cutting operation, which saves more time and effort, and the cutting force is stable, which prevents secondary damage to the skin and increases the survival rate of the skin.

[0027] Furthermore, an anti-slip member (not shown in the figure) is provided at the bottom of the support frame 100. The anti-slip member (not shown in the figure) is preferably a silicone pad, or a PVC pad with an anti-slip texture. The support frame 100 can be circular, square, or irregular in shape, which is not specifically limited here.

[0028] Furthermore, as a preference, a counterweight block (not shown in the figure) is provided inside the support frame 100 to enhance its stability.

[0029] Furthermore, the fixing mechanism 200 includes at least two clamping members 210 symmetrically arranged on the inner edge of the support frame 100. The clamping member 210 is preferably a clip. By providing a plurality of clips, skin tissues of different shapes can be fixed without causing damage to the skin. The skin can be effectively fixed by the clamping member 210, so as to prevent the skin from curling and prevent secondary damage caused by squeezing the skin during the cutting process, thereby increasing the survival rate of the skin.

[0030] Further, as a preferred embodiment of the present invention, the clamping member 210 includes an upper clamping piece hinged on the support frame 100 and provided with a magnetic sheet inside, and a lower clamping piece movably provided on the upper clamping piece and provided with a magnetic sheet inside. The skin is fixed by magnetic adsorption of the upper clamping piece and the lower clamping piece.

[0031] Furthermore, a buffer (not shown in the figure) is provided at the portion of the clamp 210 that contacts the skin. The buffer is preferably made of silicone to prevent the clamp from causing secondary damage to the skin tissue and improve the survival rate of the skin.

[0032] Furthermore, the clamping member 210 is disposed at the middle of the inner edge of the support frame 100 so as to suspend and fix the skin tissue in the air during the clamping process, thereby preventing the skin from being squeezed a second time during the cutting process and increasing the survival rate of the skin.

[0033] Furthermore, the fixing mechanism 200 also includes a length-adjustable connecting member 220 disposed between the clamping member 210 and the supporting frame 100. As a preferred embodiment of the present invention, the connecting member 220 is a length-adjustable rope. As another preferred embodiment of the present invention, the connecting member 220 is a screw (not shown in the figure) that is fastened and fixed by a bolt and is provided with an external thread. The screw passes through a threaded hole (not shown in the figure) provided on the supporting frame 100 and provided with an internal thread, and is fixed by a nut (not shown in the figure). The distance that the screw is extended can be adjusted according to the required length. The length-adjustable connecting member 220 can adapt to the thinning operation of skin tissues of different sizes, and has a wider range of applications.

[0034] Furthermore, the cutting mechanism 300 includes a slide bar 310 slidably disposed on the top of the support frame 100, a knife holder 320 slidably disposed on the slide bar 310, and a blade 330 detachably disposed on the knife holder 320. The knife holder 320 is sleeved on the slide bar 310 to achieve a sliding connection. The slide bar 310 facilitates the movement of the blade 330 on the skin tissue and provides stable support, and the sliding of the knife holder 320 on the slide bar 310 facilitates the blade 330 to achieve a thinning operation on the local skin, thereby increasing the convenience of operation and improving the thinning effect and efficiency.

[0035] Further, as a preferred embodiment of the present invention, a first U-shaped groove 321 is provided on the bottom of the knife seat 320, and a stopper 322 is provided at the opening of the first U-shaped groove 321 to prevent the blade 330 from falling off. A fixing plate 331 is provided on the top of the blade 330 to match the internal cavity of the first U-shaped groove 321. When actually used, the fixing plate 331 is inserted into the first U-shaped groove 321, so that the blade 330 and the knife seat 320 are detachably connected. The stopper 322 can be a stopper symmetrically arranged at the opening of the first U-shaped groove 321, or a stopper protrusion fixed at the opening of the first U-shaped groove 321 (not shown in the figure), which is not specifically limited here. The detachable blade 330 makes it easier to replace the blade 330 in time after the blade 330 is not sharp, and the blades 330 of different lengths and shapes can also be replaced, so as to cope with the thinning operation of skin of different sizes and different conditions.

[0036] Furthermore, the cutting mechanism 300 further includes at least one connection base 340 which is arranged at the end of the slide bar 310 and is slidably arranged on the support frame 100. The connection base 340 includes a fixing frame 341 which is connected to the power mechanism 400 and has a cavity in the middle, a spring 342 whose one end is fixed to the bottom of the cavity of the fixing frame 341, a sliding sleeve 343 which is arranged at the top of the spring 342 and is slidably connected to the inner wall of the fixing frame 341, and a fixing groove 344 which is arranged on the sliding sleeve 343 and has a groove matching the end of the slide bar 310; a limiting sliding groove (not shown in the figure) is arranged on the inner wall of the fixing frame 341 to facilitate the sliding of the sliding sleeve 343. During actual use, after the slide bar 310 is pushed into the fixing groove 344 in the slide sleeve 343, force is applied to the bottom of the fixing frame 341 to compress the spring 342, squeezing out space for the other end of the slide bar 310, and then fixing the other end of the slide bar 310 to the support frame 100 on the opposite side and releasing it, the spring 342 automatically pops up, thereby fixing the slide bar 310 and providing a stable foundation for the cutting mechanism 300. At the same time, by changing the angle and direction of the slide bar 310, the angle and direction of the cutter head relative to the surface of the skin tissue can be changed, so that the cutter head can thin the skin at different angles in the horizontal direction, which is more convenient for the skin thinning operation.

[0037] Furthermore, the cutting mechanism 300 further includes an angle adjustment assembly 350 disposed on the slide bar 310. The angle adjustment assembly 350 makes it easier to adjust the cutting angle of the blade 330, that is, the cutting angle in the vertical direction, so as to facilitate thinning of the skin, reduce the probability of secondary damage to the skin tissue, greatly improve the effect of thinning the skin, and be more conducive to the regeneration of the skin after the skin grafting operation.

[0038] Furthermore, the angle adjustment assembly 350 includes a first rack 351 disposed at the end of the slide bar 310 and arranged along the outer wall of the slide bar 310, a first gear 352 meshing with the first rack 351, a support frame 353 slidably disposed at the edge of the support frame 100 and having a through hole on the top, a transmission shaft 354 disposed at the center of the first gear 352 and passing through the through hole, a rotation knob 355 fixed on the transmission shaft 354 for controlling the rotation angle, a spring 356 having one end fixed to the support frame 353 and symmetrically fixed to both sides of the rotation knob 355, and a ratchet (not shown in the figure) disposed at the far end of the spring 356 and preventing the first gear 352 from reversing. In actual use, the slide bar 310 can be rotated by rotating the rotation knob 355, thereby adjusting the cutting angle of the blade 330. The cutting angle can be selected according to the thickness of the subcutaneous tissue, thereby making it easier to thin the skin.

[0039] Further, the power mechanism 400 includes at least one set of first slide grooves 410 symmetrically arranged on the support frame 100, and a sliding assembly 420 connected to the end of the cutting mechanism 300 and controlling the reciprocating motion of the cutting mechanism 300 in the first slide grooves 410. Preferably, the first slide grooves 410 are arranged inside the support frame 100 to reduce interference with other mechanisms.

[0040] Furthermore, the first sliding groove 410 is L-shaped.

[0041] Furthermore, if Figure 2 As shown, as a preferred embodiment of the present invention, the sliding assembly 420 includes a second gear 421 connected to the end of the cutting mechanism 300, a second rack 423 meshing with the second gear 421 and arranged at the bottom of the slide groove, a third gear 422 meshing with the second gear 421, and a rocker 424 connected to the output shaft of the third gear 422; preferably, the diameter of the third gear 422 should be greater than the diameter of the second gear 421 to achieve a labor-saving effect. In actual use, the third gear 422 is driven to rotate by rotating the rocker 424, and then the second gear 421 is driven to rotate, so that the second gear 421 moves along the second rack 423, and then the cutting mechanism 300 performs a cutting action in the horizontal direction.

[0042] Furthermore, a fixing sleeve 425 is provided on the output shaft of the second gear 421, and the fixing sleeve 425 is rotatably connected to the output shaft. Specifically, the fixing sleeve 425 is a second U-shaped groove provided at the end of the connection base 340 and rotatably connected to the output shaft of the second gear 421, so as to achieve connection with the cutting mechanism 300; as a preferred embodiment of the present invention, the fixing sleeve 425 is a second U-shaped groove provided at the far end of the output shaft of the second gear 421 and provided with a groove matching the end of the slide bar 310 of the cutting mechanism 300, so as to achieve connection with the cutting mechanism 300.

[0043] Further, as another preferred embodiment of the present invention, the sliding assembly 420 includes a second slide groove (not shown in the figure) provided at the bottom of the first slide groove 410, an I-shaped seat (not shown in the figure) connected to the end of the cutting mechanism 300 and slidably connected to the second slide groove (not shown in the figure), and a push rod 426 whose bottom is connected to the I-shaped seat (not shown in the figure) and extends out of the first slide groove 410. In actual use, the push rod 426 is pushed, thereby driving the I-shaped seat (not shown in the figure) to slide in the second slide groove (not shown in the figure), so as to realize the cutting action of the cutting mechanism 300 in the horizontal direction, saving time and effort.

[0044] In actual use, the skin tissue is first fixed on the fixing mechanism 200. After adjusting the cutting angle of the blade 330 of the cutting mechanism 300 according to the thickness of the subcutaneous tissue, the power mechanism 400 is moved to drive the cutting mechanism 300 to move on the skin tissue and cut off the excess subcutaneous tissue. By changing the angle and direction of the sliding rod 310, the angle and direction of the cutting head relative to the surface of the skin tissue can be changed, so that the cutting head can thin the skin at different angles in the horizontal direction.

[0045] The preferred embodiments of the present invention are described above with reference to the accompanying drawings. A person skilled in the art may implement the present invention in a variety of variations without departing from the scope and essence of the present invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to obtain another embodiment. The above are only preferred feasible embodiments of the present invention, and do not limit the scope of rights of the present invention. Any equivalent changes made using the contents of the present specification and the accompanying drawings are included in the scope of rights of the present invention.

Claims

1. A skin thinning device, characterized in that: The invention comprises a support frame with a cavity in the middle, a fixing mechanism arranged on the support frame and used to fix skin tissue, at least one cutting mechanism arranged above the fixing mechanism and slidably arranged on the support frame, and a power mechanism arranged on the support frame and connected to the cutting mechanism; the cutting mechanism comprises a sliding rod slidably arranged on the top of the support frame, a knife seat slidably arranged on the sliding rod, and a blade detachably arranged on the knife seat; the cutting mechanism also comprises an angle adjustment component arranged on the sliding rod; the angle adjustment component comprises a first angle adjustment component arranged at the end of the sliding rod and arranged along the outer wall of the sliding rod A rack, a first gear meshing with the first rack, a support frame arranged at the edge of the support frame and having a through hole on the top, a transmission shaft arranged at the center of the first gear and passing through the through hole, a rotating knob fixed on the transmission shaft for controlling the rotation angle, a spring sheet with one end fixed to the support frame and symmetrically fixed to both sides of the rotating knob, and a pawl arranged at the far end of the spring sheet and preventing the first gear from reversing; the fixing mechanism includes at least two clamping members symmetrically arranged on the inner edge of the support frame; the fixing mechanism also includes a connecting member arranged between the clamping member and the support frame and with adjustable length.

2. A skin thinning device according to claim 1, characterized in that: The cutting mechanism further comprises at least one connecting base which is arranged at the end of the sliding rod and is slidably arranged on the supporting frame.

3. A skin thinning device according to claim 1 or 2, characterized in that: The power mechanism comprises at least one group of first slide grooves symmetrically arranged on the support frame, and a sliding component connected to the end of the cutting mechanism and controlling the reciprocating motion of the cutting mechanism in the first slide grooves.

4. A skin thinning device according to claim 3, characterized in that: The first slide groove is L-shaped.

5. A skin thinning device according to claim 4, characterized in that: The sliding assembly includes a second gear connected to the end of the cutting mechanism, a second rack meshed with the second gear and arranged at the bottom of the first slide groove, a third gear meshed with the second gear, and a rocker connected to the output shaft of the third gear; or; The sliding assembly includes a second sliding groove arranged at the bottom of the first sliding groove, an I-shaped seat connected to the end of the cutting mechanism and slidably connected to the second sliding groove, and a push rod whose bottom is connected to the I-shaped seat and extends out of the first sliding groove.

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