CN112847505A

CN112847505A - Skin thinning device

Info

Publication number: CN112847505A
Application number: CN202011620886.1A
Authority: CN
Inventors: 马金星; 戴闽; 刘序强; 张斌; 阚静; 闵锐; 陈明; 肖忠洲
Original assignee: First Affiliated Hospital of Nanchang University
Current assignee: First Affiliated Hospital of Nanchang University
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to a skin thinning device which comprises a supporting frame, a fixing mechanism, at least one cutting mechanism and a power mechanism, wherein a cavity is formed in the middle of the supporting frame, the fixing mechanism is arranged on the supporting frame and used for fixing skin tissues, the cutting mechanism is arranged above the fixing mechanism and arranged on the supporting frame in a sliding mode, and the power mechanism is arranged on the supporting frame and connected with the cutting mechanism. The device has the advantages of simple structure, convenient operation, time saving, labor saving and the like, greatly reduces the operation difficulty of medical personnel, improves the skin thinning effect and efficiency, and greatly shortens the operation time.

Description

Skin thinning device

Technical Field

The invention relates to the technical field of medical auxiliary instruments, in particular to a skin thinning device.

Background

With the rapid progress of modern society, the large-area skin detachment, injury and damage caused by traffic trauma and industrial injury are common soft tissue injuries in emergency treatment. The limitation of the amount of the autologous skin, the great pain degree of the patient caused by the overlarge damage of the skin-taking knife to the supply area and the overlarge price of the artificial skin are the existing technical limitations. The first choice for the emergency treatment of the large-area sleeve-dislocation wound is to thin and replant debrided skin; for the defects that the skin taking range of the small-area irregular skin defect is large and the damage of a patient supply area is too large for avoiding the skin taking range of a skin taking knife, local cutting small skin flaps can be selected for skin taking, thinning and skin grafting. The method for thinning mostly adopts manual thinning, has the defects of time and labor consumption, uneven thinning thickness and the like, greatly prolongs the operation time, and increases the risks of infection and skin ischemic necrosis of patients. It is more testful for perseverance and physical strength for the surgeon.

Disclosure of Invention

Features and advantages of the invention will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.

In order to solve the defects of time consumption, labor consumption, uneven thinning thickness and the like in the manual skin flap thinning mode in the prior art, the invention provides a skin thinning device which comprises a supporting frame, a fixing mechanism, at least one cutting mechanism and a power mechanism, wherein a cavity is formed in the middle of the supporting frame, the fixing mechanism is arranged on the supporting frame and used for fixing skin tissues, the cutting mechanism is arranged above the fixing mechanism and arranged on the supporting frame in a sliding mode, and the power mechanism is arranged on the supporting frame and connected with the cutting mechanism.

Preferably, the fixing mechanism comprises at least two clamping pieces symmetrically arranged on the inner side edge of the supporting frame.

Preferably, the fixing mechanism further comprises a connecting piece which is arranged between the clamping piece and the supporting frame and has adjustable length.

Preferably, the cutting mechanism comprises a sliding rod arranged at the top of the supporting frame in a sliding manner, a cutter holder arranged on the sliding rod in a sliding manner, and a blade detachably arranged on the cutter holder.

Preferably, the cutting mechanism further comprises at least one connecting base which is arranged at the end of the sliding rod and is arranged on the supporting frame in a sliding manner.

Preferably, the cutting mechanism further comprises an angle adjusting assembly arranged on the sliding rod.

Preferably, the angle adjustment assembly comprises a first rack arranged at the end of the sliding rod and along the outer wall of the sliding rod, a first gear meshed with the first rack, a support frame provided with a through hole at the edge and the top of the support frame, a transmission shaft arranged at the center of the first gear and penetrating through the through hole, a rotating button fixed on the transmission shaft and used for controlling the rotating angle, elastic pieces fixed on the support frame and symmetrically fixed on two sides of the rotating button at the end of one side, and a pawl arranged at the far end of each elastic piece and used for preventing the first gear from reversing.

Preferably, the power mechanism comprises at least one group of first sliding grooves symmetrically arranged on the supporting frame, and a sliding assembly connected with the end part of the cutting mechanism and controlling the cutting mechanism to reciprocate in the first sliding grooves.

Preferably, the first sliding groove is L-shaped.

Preferably, the sliding assembly comprises a second gear connected with the end part of the cutting mechanism, a second rack meshed with the second gear and arranged at the bottom of the sliding chute, a third gear meshed with the second gear, and a rocker connected with an output shaft of the third gear;

or;

the sliding assembly comprises a second sliding groove arranged at the bottom of the first sliding groove, an I-shaped seat connected with the end of the cutting mechanism and slidably connected with the second sliding groove, and a push rod with the bottom connected with the I-shaped seat and extending out of the first sliding groove.

The invention has the beneficial effects that: the support frame provides a stable support foundation for the whole device, and the sliding in the cutting process is effectively prevented. Effectively fix skin through fixed establishment, can prevent that skin from curling, and can prevent the secondary damage that the extrusion skin caused among the cutting process, increase the skin survival rate. The skin is thinned through at least one cutting mechanism, so that the speed is high, and the working strength of medical staff is greatly reduced. Drive cutting mechanism through power unit and carry out cutting operation, labour saving and time saving more, and the cutting dynamics is stable, has prevented the secondary damage that causes skin, has increased the skin survival rate. The device has the advantages of simple structure, convenient operation, time and labor saving, low cost and the like, greatly reduces the operation difficulty of medical personnel, improves the skin thinning effect and efficiency, and greatly shortens the operation time.

Drawings

The advantages and realisation of the invention will be more apparent from the following detailed description, given by way of example, with reference to the accompanying drawings, which are given for the purpose of illustration only, and which are not to be construed in any way as limiting the invention, and in which:

FIG. 1 is a schematic view of a skin thinning apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a power mechanism of a skin thinning apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view of a cutting mechanism of a skin thinning apparatus according to an embodiment of the present invention;

in the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

a supporting frame-100, a fixing mechanism-200, a clamping piece-210, a connecting piece-220, a cutting mechanism-300, a sliding rod-310, a tool apron-320, a first U-shaped groove-321, a limiting piece-322, a blade-330, a fixing piece-331, a connecting base-340, a fixing frame-341, a spring-342, a sliding sleeve-343, a fixing groove-344, an angle adjusting component-350, a first rack-351, a first gear-352, a supporting frame-353, a transmission shaft-354, a rotating button-355, an elastic piece-356, a power mechanism-400, a first sliding chute-410, a sliding component-420, a second gear-421, a third gear-422, a second rack-423, a rocker-424 and a fixing sleeve-425, a push rod-426.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 3, the present invention provides a skin thinning apparatus, which comprises a supporting frame 100 having a cavity in the middle, a fixing mechanism 200 disposed on the supporting frame 100 and used for fixing skin tissue, at least one cutting mechanism 300 disposed above the fixing mechanism 200 and slidably disposed on the supporting frame 100, and a power mechanism 400 disposed on the supporting frame 100 and connected to the cutting mechanism 300. Provide stable support basis for whole device through braced frame 100, effectively prevent the slip in the cutting process, improve cutting mechanism 300's cutting stability, effectively prevented the secondary damage to the skin. Effectively fix skin through fixed establishment 200, can prevent that skin from curling, and can prevent the secondary damage that the extrusion skin caused in the cutting process, increase the skin survival rate. The skin is thinned through at least one cutting mechanism 300, so that the speed is high, and the working strength of medical staff is greatly reduced. Drive cutting mechanism 300 through power unit 400 and carry out cutting operation, labour saving and time saving more, and the cutting dynamics is stable, has prevented the secondary damage that causes skin, has increased the skin survival rate.

Further, the bottom of the supporting frame 100 is provided with a non-slip member (not shown), preferably a silicone pad, or a PVC pad provided with non-slip texture. The support frame 100 may be circular, square, or irregular, and is not limited in this respect.

Further, it is preferable that the support frame 100 is provided at an inner portion thereof with a weight (not shown) for enhancing stability thereof.

Further, the fixing mechanism 200 includes at least two clamping members 210 symmetrically disposed on the inner edge of the supporting frame 100. The clip 210 is preferably a clip. The skin tissues with different shapes can be fixed by arranging the plurality of clips, and the skin can not be damaged. Effectively fix skin through holder 210, can prevent that skin from curling, and can prevent to extrude the secondary damage that skin caused in the cutting process, increase the skin survival rate.

Further, as a preferred embodiment of the present invention, the clamping member 210 includes an upper clamping piece hinged to the supporting frame 100 and having a magnetic sheet inside, and a lower clamping piece movably disposed on the upper clamping piece and having a magnetic sheet inside. The skin is fixed by the magnetic absorption of the upper clamping piece and the lower clamping piece.

Further, a buffer member (not shown) is disposed at a portion of the clamping member 210 contacting the skin, and the buffer member is preferably made of silicone material to prevent the clamping member from causing secondary damage to the skin tissue and improve the survival rate of the skin.

Further, the clamping member 210 is disposed in the middle of the inner side edge of the supporting frame 100, so as to fix the skin tissue in a suspending manner during the clamping process, thereby preventing the skin from being extruded secondarily during the cutting process, and increasing the survival rate of the skin.

Further, the fixing mechanism 200 further includes a connecting member 220 with an adjustable length and 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 rope whose length is adjustable. As another preferred embodiment of the present invention, the connection member 220 is a screw (not shown) fastened and fixed by a bolt and provided with an external thread, and the screw passes through a threaded hole (not shown) provided with an internal thread and arranged on the support frame 100 and is fixed by a nut (not shown), and the distance of the screw is adjusted according to a desired length. The connecting piece 220 with adjustable length can adapt to the thinning operation of skin tissues with different sizes, and has wider application range.

Further, the cutting mechanism 300 includes a sliding rod 310 slidably disposed on the top of the supporting frame 100, a tool holder 320 slidably disposed on the sliding rod 310, and a blade 330 detachably disposed on the tool holder 320. The knife holder 320 is sleeved on the sliding rod 310 to realize sliding connection. Through slide bar 310 so that realize the removal of blade 330 on skin tissue, and provide stable support to through the slip of blade holder 320 on slide bar 310, be convenient for blade 330 realize the operation of thinning to local skin, increase the convenience of operation, and improve and thin effect and efficiency.

Further, as a preferred embodiment of the present invention, a first U-shaped groove 321 is disposed on the bottom of the tool holder 320, a limiting member 322 for preventing the blade 330 from falling off is disposed at an opening of the first U-shaped groove 321, a fixing plate 331 adapted to the cavity inside the first U-shaped groove 321 is disposed on the top of the blade 330, and when in actual use, the fixing plate 331 is inserted into the first U-shaped groove 321, so that the blade 330 and the tool holder 320 are detachably connected. The position-limiting members 322 may be stop rods symmetrically disposed at the opening of the first U-shaped groove 321, or may be position-limiting protrusions (not shown) fixed at the opening of the first U-shaped groove 321, which is not limited herein. Through detachable blade 330, be convenient for more in time change blade 330 after blade 330 is not sharp, still can change the blade 330 of different length and shape simultaneously to the operation of thinning of the skin of answering different sizes, different situations.

Further, the cutting mechanism 300 further includes at least one connection base 340 disposed at an end of the sliding rod 310 and slidably disposed on the support frame 100. The connection base 340 comprises a fixed frame 341 connected with the power mechanism 400 and provided with a cavity in the middle, a spring 342 fixed at the bottom of the cavity of the fixed frame 341 at one side end, a sliding sleeve 343 arranged at the top of the spring 342 and slidably connected with the inner wall of the fixed frame 341, and a fixing groove 344 arranged on the sliding sleeve 343 and provided with a groove matched with the end of the sliding rod 310; the inner wall of the fixing frame 341 is provided with a limiting sliding groove (not shown in the figure) for facilitating the sliding of the sliding sleeve 343. During the actual use, after pushing slide bar 310 into fixed slot 344 in sliding sleeve 343, exert oneself to the bottom of mount 341, and then compression spring 342, extrude the space for the opposite side tip of slide bar 310, fix the back with the opposite side braced frame 100 with the opposite side tip of slide bar 310 again, loosen, spring 342 is automatic to bounce, the fixed of slide bar 310 has been realized, stable basis is provided for cutting mechanism 300, and simultaneously through the angle and the direction of exchanging slide bar 310 and then realize the angle and the change of direction to the tool bit for skin tissue surface, make the tool bit can be followed the different angles of horizontal direction and thinned the skin, be convenient for more the operation of thinning of skin.

Further, the cutting mechanism 300 further comprises an angle adjustment assembly 350 disposed on the sliding rod 310. More add the cutting angle of being convenient for adjustment blade 330 through angle adjustment subassembly 350, follow vertical direction's cutting angle promptly to the convenience is thinned skin, has reduced the probability to skin tissue secondary damage, has promoted the effect of thinning skin greatly, is favorable to the regeneration of skin after the skin grafting operation more.

Further, the angle adjustment assembly 350 includes a first rack 351 disposed at an end of the sliding rod 310 and disposed along an outer wall of the sliding rod 310, a first gear 352 engaged with the first rack 351, a supporting frame 353 slidably disposed at an edge of the supporting frame 100 and having a through hole at a top thereof, a transmission shaft 354 disposed at a center of the first gear 352 and passing through the through hole, a rotation knob 355 fixed on the transmission shaft 354 for controlling a rotation angle, elastic pieces 356 fixed on the supporting frame 353 at an end of one side thereof and symmetrically fixed at two sides of the rotation knob 355, and a pawl (not shown in the drawings) disposed at a distal end of the elastic pieces 356 and preventing the first gear 352 from reversing. During practical use, the rotating button 355 is rotated to rotate the sliding rod 310, so that the cutting angle of the blade 330 can be adjusted, the cutting angle can be selected according to the thickness of subcutaneous tissues, and the skin thinning operation is facilitated.

Further, the power mechanism 400 includes at least one set of first sliding grooves 410 symmetrically disposed on the supporting frame 100, and a sliding assembly 420 connected to an end of the cutting mechanism 300 and controlling the cutting mechanism 300 to reciprocate in the first sliding grooves 410. Preferably, the first sliding groove 410 is provided inside the supporting frame 100 to reduce interference with other mechanisms.

Further, the first sliding groove 410 is L-shaped.

Further, as shown in fig. 2, 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 engaged with the second gear 421 and disposed at the bottom of the sliding chute, a third gear 422 engaged with the second gear 421, and a rocker 424 connected to an output shaft of the third gear 422; preferably, the diameter of the third gear 422 should be larger than that of the second gear 421 to achieve the effect of saving labor. In practical use, the rocker 424 rotates to drive the third gear 422 to rotate, and further drives the second gear 421 to rotate, so that the second gear 421 moves along the second rack 423, and further the cutting mechanism 300 performs a cutting operation along a horizontal direction.

Further, a fixing sleeve 425 is disposed 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 disposed at the end of the connecting base 340 and rotatably connected to the output shaft of the second gear 421, so as to connect 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 distal end of the output shaft of the second gear 421 and provided with a groove adapted to the end of the sliding rod 310 of the cutting mechanism 300, so as to realize the connection with the cutting mechanism 300.

Further, as another preferred embodiment of the present invention, the sliding assembly 420 includes a second sliding groove (not shown) disposed at the bottom of the first sliding groove 410, an i-shaped seat (not shown) connected to an end of the cutting mechanism 300 and slidably connected to the second sliding groove (not shown), and a push rod 426 having a bottom connected to the i-shaped seat (not shown) and extending out of the first sliding groove 410. In practical use, the push rod 426 is pushed to further drive the sliding of the i-shaped seat (not shown in the figure) in the second sliding slot (not shown in the figure), so as to realize the cutting action of the cutting mechanism 300 along the horizontal direction, thereby saving time and labor.

In practical use, firstly, the skin tissue is fixed on the fixing mechanism 200, after the cutting angle of the blade 330 of the cutting mechanism 300 is adjusted according to the thickness of the skin tissue, the power mechanism 400 is moved to further drive the cutting mechanism 300 to move on the skin tissue and cut off redundant skin tissue, and the angle and direction of the cutter head relative to the surface of the skin tissue are exchanged by exchanging the angle and direction of the sliding rod 310, so that the cutter head can thin the skin along different angles in the horizontal direction.

While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, those skilled in the art will appreciate that various modifications can be made to the present invention without departing from the scope and spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.

Claims

1. The skin thinning device is characterized by comprising a supporting frame, a fixing mechanism, at least one cutting mechanism and a power mechanism, wherein the supporting frame is provided with a cavity in the middle, the fixing mechanism is arranged on the supporting frame and used for fixing skin tissues, the cutting mechanism is arranged above the fixing mechanism and arranged on the supporting frame in a sliding mode, and the power mechanism is arranged on the supporting frame and connected with the cutting mechanism.

2. A skin thinning apparatus according to claim 1, wherein said securing mechanism comprises at least two clamps symmetrically disposed on an inside edge of said support frame.

3. A skin thinning apparatus according to claim 2, wherein said fixing mechanism further comprises a length-adjustable connecting member disposed between said holding member and said supporting frame.

4. A skin thinning apparatus according to claim 1, wherein said cutting mechanism comprises a slide bar slidably disposed on a top portion of said support frame, a blade holder slidably disposed on said slide bar, and a blade detachably disposed on said blade holder.

5. A skin thinning apparatus according to claim 4, wherein said cutting mechanism further comprises at least one connecting base disposed at an end of said slide bar and slidably disposed on said support frame.

6. A skin thinning apparatus according to claim 4, wherein said cutting mechanism further comprises an angle adjustment assembly disposed on said slide bar.

7. The skin thinning apparatus according to claim 6, wherein the angle adjustment assembly comprises a first rack disposed at an end of the sliding bar and disposed along an outer wall of the sliding bar, a first gear engaged with the first rack, a support frame disposed at an edge of the support frame and having a through hole at a top thereof, a transmission shaft disposed at a center of the first gear and passing through the through hole, a rotation knob fixed to the transmission shaft for controlling a rotation angle, resilient pieces fixed to the support frame at an end of one side thereof and symmetrically fixed to two sides of the rotation knob, and a pawl disposed at a distal end of the resilient piece and preventing the first gear from reversing.

8. A skin thinning apparatus according to any one of claims 1 to 7, wherein said power mechanism comprises at least one set of first slide slots symmetrically disposed on said supporting frame, and a slide assembly connected to an end of said cutting mechanism and controlling said cutting mechanism to reciprocate within said first slide slots.

9. A skin thinning apparatus according to claim 8, wherein said first runner is L-shaped.

10. A skin thinning apparatus according to claim 8, wherein said sliding assembly includes a second gear connected to an end of said cutting mechanism, a second rack engaged with said second gear and disposed at a bottom of said chute, a third gear engaged with said second gear, and a rocker lever connected to an output shaft of said third gear;

or;