Leather cutting equipment

Abstract

The present disclosure relates to a skin graft cutting device, comprising: a skin graft cutting mechanism, the skin graft cutting mechanism cutting the skin graft into a shape that meets the requirements of the skin grafting operation; a three-dimensional moving mechanism, the three-dimensional moving mechanism holding the skin graft cutting mechanism and comprising an X-axis moving component, a Y-axis moving component, and a Z-axis moving component, thereby being able to move the skin graft cutting mechanism along mutually orthogonal X, Y, and Z axis directions; and a base, the three-dimensional moving mechanism being disposed on the base. The skin graft cutting device disclosed herein has a wide range of applications, is easy to operate, has adjustable mesh and skin graft size specifications, has uniform particle morphology, and has high activity retention, and is particularly suitable for use in various skin grafting operations.

Description

Technical Field

[0001] The present disclosure generally relates to the field of skin grafting, and more particularly to a skin graft cutting device. Background Art

[0002] Currently, treating extremely large, deep burns remains a significant challenge for clinicians. Timely wound repair is crucial for improving treatment success rates. Failure to close the wounds early in patients with large, deep burns can greatly complicate subsequent treatment. Therefore, how to utilize limited donor sites to repair large, deep wounds while ensuring graft survival remains a pressing challenge in the treatment of critically ill burn patients.

[0003] Existing skin grafting methods can be divided into mesh skin grafting, stamp skin grafting, microparticle skin grafting, etc. according to the shape of the skin graft. All techniques require the use of special equipment for skin graft preparation. Mesh skin grafting requires a mesh skin grafting machine, but the mesh spacing of the mesh skin grafting machine is relatively fixed and cannot be flexibly adjusted according to the wound surface condition, and the postoperative shape is not very beautiful. MEEK skin grafting, a representative of stamp skin grafting, requires a MEEK skin grafting machine, but the cleaning and disinfection procedures of the MEEK skin grafting machine are complicated and require specially trained personnel to operate. The blades are expensive and may cause cross-infection of diseases if reused in clinical practice. In addition, after multiple disinfections and reuses, the blade becomes dull and affects the cutting effect. Microparticle skin grafting requires manual scissors or medical skin shredders. Manual cutting is simple and convenient and does not require special instruments, but it is time-consuming and labor-intensive. A 20mm×20mm skin graft requires at least two people to cut for more than 30 minutes to achieve a size of less than 1 mm. 2 The preparation standards of the microparticles are not met, and the particle size is very uneven; although the rotary medical skin crusher can quickly prepare microparticles of the same size in a short time, there are also problems such as irregular particle size and extremely low particle activity. Summary of the Invention

[0004] The present disclosure addresses the deficiencies of the prior art and provides a novel skin flap cutting device.

[0005] According to one aspect of the present disclosure, a skin graft cutting device includes a skin graft cutting mechanism, a three-dimensional motion mechanism, and a base. The skin graft cutting mechanism cuts a skin graft into a shape that meets the requirements of a skin grafting procedure. The three-dimensional motion mechanism holds the skin graft cutting mechanism and includes an X-axis motion assembly, a Y-axis motion assembly, and a Z-axis motion assembly, thereby enabling movement of the skin graft cutting mechanism along mutually orthogonal X, Y, and Z axis directions. The three-dimensional motion mechanism is disposed on the base.

[0006] In some embodiments, the top of the base is provided with an opening covered by a leather fixing assembly.

[0007] In some embodiments, the skin flap fixing assembly includes an upper negative pressure plate and a lower supporting plate stacked together.

[0008] In some embodiments, small holes are distributed on the negative pressure plate, so that the skin piece to be cut can be laid flat on the negative pressure plate and cover at least a portion of the small holes.

[0009] In some embodiments, a plurality of protrusions are provided on the carrying plate so that the negative pressure plate can rest on the carrying plate.

[0010] In some embodiments, the area between the negative pressure plate and the plurality of protrusions in the middle of the carrier plate is an air flow channel in fluid communication with the aperture. In some embodiments, the carrier plate is provided with a negative pressure source interface that can be fluidically connected to a negative pressure source external to or built into the skin graft cutting device.

[0011] In some embodiments, the base is equipped with a control panel for controlling the operation of the dermatome cutting device.

[0012] In some embodiments, the X-axis moving assembly includes a motor, a transmission device, and a support platform. The motor and the transmission device can move the support platform back and forth along the X-axis direction, and the support platform supports the Y-axis moving assembly thereon.

[0013] In some embodiments, the supporting platform includes a slider and a bracket fixed on the slider.

[0014] In some embodiments, the bracket is substantially C-shaped and includes a horizontal base plate fixed to the slider, and two vertical end plates located at both ends of the horizontal base plate, wherein the vertical end plates are used to connect to the Y-axis moving assembly.

[0015] In some embodiments, the bracket includes a bottom groove to guide the bracket to move back and forth along the X-axis direction on a guide rail fixed to the base.

[0016] In some embodiments, the X-axis moving assembly further includes a plate-shaped sealing member to seal the base after the X-axis moving assembly is installed in the base.

[0017] In some embodiments, the vertical end plates are fixed to the horizontal bottom plate via supporting members, wherein the supporting members are in the shape of a hollow inverted convex letter and the sealing member passes through the middle thereof.

[0018] In some embodiments, the top of the support is secured to the vertical end plates, while the bottom of the protrusion is mounted to the horizontal base plate.

[0019] In some embodiments, the transmission device includes a belt and a screw, the belt transmits the rotation of the output shaft of the motor to the screw, and the screw is spirally engaged with the slider.

[0020] In some embodiments, the transmission comprises a belt, and the slider is directly fixed to the belt.

[0021] In some embodiments, the Y-axis moving assembly includes a motor, a transmission device, and a support platform. The motor and the transmission device can move the support platform back and forth along the Y-axis direction, and the support platform supports the Z-axis moving assembly thereon.

[0022] In some embodiments, the supporting platform includes a slider and a bracket fixed on the slider.

[0023] In some embodiments, the bracket is generally C-shaped and includes an upper platform and a lower platform connected by a fixing plate.

[0024] In some embodiments, the Z-axis moving assembly is disposed on the upper platform, and the skin flap cutting mechanism is disposed on the lower platform.

[0025] In some embodiments, the transmission device includes a belt and a screw, the belt transmits the rotation of the output shaft of the motor to the screw, and the screw is spirally engaged with the slider.

[0026] In some embodiments, the transmission device includes a belt, and the slider is directly connected to and fixed on the belt.

[0027] In some embodiments, the Z-axis moving assembly includes a motor and a transmission device, and the motor is connected to the skin flap cutting mechanism through the transmission device and is capable of moving the skin flap cutting mechanism back and forth along the Z-axis direction.

[0028] In some embodiments, the transmission device is a gear structure.

[0029] In some embodiments, the skin flap cutting mechanism includes a cutting head assembly.

[0030] In some embodiments, the cutting head assembly includes a cutting head, a fork, and an elongated rod, and the cutting head is connected to the elongated rod through the fork, and the elongated rod is connected to the three-dimensional movement mechanism.

[0031] In some embodiments, the cutting head is configured as a disposable component that can be removed from the fork, or the cutting head and fork are configured as disposable components that can be removed from the extension rod, or the cutting head, fork and extension rod are configured as disposable components that can be removed from the Z-axis movement assembly.

[0032] In some embodiments, the cutting head is cylindrical, and one or more parallel cutting blades are fixed on the outer circumferential surface of the cylinder perpendicular to the central axis of the cylinder.

[0033] In some embodiments, the cutting head includes a rotational shaft extending perpendicularly outward from the center of the top and bottom surfaces of the cylinder.

[0034] In some embodiments, the rotational axis of the cutting head is rotatably connected to two prongs of the fork, and the top of the fork is connected to one end of the extension rod.

[0035] In some embodiments, the skin flap cutting mechanism further includes a cutting head rotating assembly for driving the cutting head assembly to rotate.

[0036] In some embodiments, the cutting head rotation assembly includes a motor and a transmission.

[0037] In some embodiments, the transmission comprises a belt and a drive pulley secured to the cutting head. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In the following description with reference to the accompanying drawings, the same or similar numerical symbols refer to the same elements or components, and the technical details of the present invention will be described in detail by referring to the accompanying drawings.

[0039] Figure 1A and 1B A three-dimensional diagram of a skin flap cutting device according to a first embodiment of the present invention and a three-dimensional diagram with some components removed;

[0040] Figures 2A-2C 1. A top view of a skin flap fixing assembly of a skin flap cutting device according to a first embodiment of the present invention, and a top view and a three-dimensional view after removing the negative pressure plate;

[0041] Figure 3 is a perspective view of a three-dimensional moving mechanism of a skin flap cutting device according to a first embodiment of the present invention;

[0042] Figure 4A is a perspective view of an X-axis moving assembly of a skin flap cutting device according to a first embodiment of the present invention, Figure 4B This is a three-dimensional diagram of the support of the X-axis moving component. Figure 4C This is a three-dimensional diagram of the seal assembly of the X-axis moving component;

[0043] Figure 5 A perspective view of a Y-axis moving assembly of a skin flap cutting device according to a first embodiment of the present invention;

[0044] Figure 6 A perspective view of a Z-axis moving assembly of a skin flap cutting device according to a first embodiment of the present invention;

[0045] Figure 7A and 7B is a perspective view of a skin flap cutting mechanism of a skin flap cutting device according to a first embodiment of the present invention;

[0046] Figure 8A is a perspective view of a cutting head assembly of a skin flap cutting mechanism according to a first embodiment of the present invention; Figure 8B is a perspective view of a cutting head of a cutting head assembly; Figure 8C It is a schematic diagram of the assembly of the cutting head and the fork;

[0047] Figure 9 is a perspective view of a skin flap cutting device according to a second embodiment of the present invention;

[0048] Figure 10 is a perspective view of a three-dimensional moving mechanism of a skin flap cutting device according to a second embodiment of the present invention;

[0049] Figure 11 A perspective view of an X-axis moving assembly of a skin flap cutting device according to a second embodiment of the present invention;

[0050] Figure 12 FIG. 1 is a perspective view of a Y-axis moving assembly of a skin flap cutting device according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0051] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide many additional embodiments.

[0052] It should be understood that like reference numerals refer to like elements throughout the drawings. In the drawings, the dimensions of some features may be distorted for clarity.

[0053] It should be understood that the terms used in this specification are intended only to describe specific embodiments and are not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in this specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0054] It should be understood that the X-axis, Y-axis, and Z-axis in the specification are only used to indicate the three-dimensional structural direction of the device, and there are different axial expressions based on the coordinate origins with different identifiers in the device.

[0055] The singular forms "a", "an", "the" and "the" used in this specification include the plural forms unless otherwise expressly stated. The terms "include", "comprise" and "contain" used in this specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in this specification includes any and all combinations of one or more of the relevant listed items. The terms "between X and Y" and "between approximately X and Y" used in this specification should be interpreted as including X and Y. The term "between approximately X and Y" used in this specification means "between approximately X and approximately Y", and the term "from about X to Y" used in this specification means "from about X to about Y".

[0056] In the specification, when an element is referred to as being "on," "attached," "connected," "coupled," or "in contact with" another element, the element may be directly on, attached, connected, coupled to, or in contact with another element, or there may be intervening elements. In contrast, when an element is referred to as being "directly" "on," "directly attached," "directly connected," "directly coupled," or "in direct contact with" another element, there may be no intervening elements. In the specification, when a feature is arranged "adjacent" to another feature, it may mean that a feature has a portion that overlaps with an adjacent feature or a portion that is above or below an adjacent feature.

[0057] In the specification, spatial terms such as "upper," "lower," "left," "right," "front," "back," "higher," and "lower" may be used to describe the relationship of one feature to another feature in the accompanying drawings. It should be understood that these spatial terms encompass not only the orientation shown in the accompanying drawings, but also different orientations of the device during use or operation. For example, if the device in the accompanying drawings is turned over, a feature previously described as "below" another feature might now be described as "above" the other feature. The device may also be otherwise oriented (rotated 90 degrees or in other orientations), and relative spatial relationships will be interpreted accordingly.

[0058] Figure 1A and 1B The present invention shows a skin flap cutting device 10 according to a first embodiment. As shown in the figure, the skin flap cutting device 10 includes a base 100, and a three-dimensional moving mechanism 200 and a skin flap cutting mechanism 300 located on the base 100.

[0059] The base 100 supports the various components of the skin grafting device 10, including the three-dimensional movement mechanism 200, the skin grafting mechanism 300, and other components such as a power supply, touch screen, and knobs. The three-dimensional movement mechanism 200 rests on the base 100 and securely holds the skin grafting mechanism 300. The three-dimensional movement mechanism 200 can move the skin grafting mechanism 300 along orthogonal X, Y, and Z axes, allowing the skin grafting mechanism 300 to cut the skin graft into a shape suitable for the skin grafting procedure.

[0060] like Figure 1A and 1B As shown, the base 100 is generally in the shape of a rectangular parallelepiped and includes a bottom wall 110, a top wall 120, and a side wall 130 connecting the bottom wall 110 and the top wall 120. The bottom wall 110, the top wall 120, and the side wall 130 together define a hollow chamber 140 of the base 100. The hollow chamber 140 houses components such as a power supply, a negative pressure source, a controller, a driver, and the like, and accommodates most of the three-dimensional movement mechanism 200. An opening 121 is provided on the top wall 120 and is covered by a leather fixing assembly 150. An operator can access the components in the hollow chamber 140 through the opening 121 when necessary (for example, during maintenance). Ventilation holes 131 are provided on the side wall 130 to maintain the components in the hollow chamber 140 at a suitable temperature. In one embodiment, a control panel 160 is mounted on one side of the base 100. The control panel 160 may be provided with various control switches for controlling the operation of the skin flap cutting device 10 , including a power switch 161 , and input and output devices (eg, knobs 162 , touch screen 163 ) for the operator to input instructions and view status.

[0061] The skin piece fixing assembly 150 is used to firmly fix the flat skin piece to be cut, so that the skin piece cutting mechanism 300 can perform the skin piece cutting action on the skin piece fixing assembly 150. Figures 2A-2CAs shown, the skin flap fixing assembly 150 includes an upper negative pressure plate 151 and a lower support plate 152 stacked together. Small holes 153 are evenly distributed on the negative pressure plate 151. The skin flap to be cut is laid flat on the negative pressure plate 151, covering a portion of the small holes 153. The support plate 152 is provided with multiple protrusions 154 of equal height (e.g., with a semicircular or semi-elliptical cross-section), allowing the negative pressure plate 151 to rest stably and horizontally on the support plate 152. The area between the support plate 152 and the central protrusion 154 of the negative pressure plate defines an airflow channel 155, and a negative pressure source interface 156 is provided in the center of the support plate 152. The negative pressure source interface 156 can be fluidically connected to a negative pressure source (not shown) external to or built into the skin graft cutting device 10. The negative pressure source can then apply negative pressure to the skin graft through the negative pressure source interface 156, the airflow channel 155, and the small holes 153 on the carrier plate 152, thereby firmly securing the skin graft to the negative pressure plate 151. After the skin graft is cut, the negative pressure source is deactivated, allowing the skin graft to be easily removed from the negative pressure plate 151.

[0062] The three-dimensional moving mechanism 200 is placed on the base 100 and is used to move the skin flap cutting mechanism 300 along the X-axis, Y-axis and Z-axis directions. Figure 3 As shown, the three-dimensional moving mechanism 200 includes an X-axis moving assembly 210 , a Y-axis moving assembly 220 and a Z-axis moving assembly 230 .

[0063] See also Figure 4A Combined with Figure 1A and Figure 1B The X-axis moving assembly 210 includes a motor 211, a transmission device 212, and a support platform 213. The motor 211, together with the transmission device 212, can move the support platform 213 back and forth along the X-axis direction, and the support platform 213 supports the Y-axis moving assembly 220 thereon. In the illustrated example, the transmission device 212 includes a first transmission belt 214 and a lead screw 215, and the support platform 213 includes a slider 216 and a bracket 217 fixed to the slider 216. The first transmission belt 214 transmits the rotation of the output shaft of the motor 211 to the lead screw 215, which in turn drives the bracket 217 to move back and forth along the X-axis direction through a screw connection with the slider 216.

[0064] In some embodiments, the bracket 217 is generally C-shaped and includes a horizontal base plate 217A and two vertical end plates 217B located at either end of the horizontal base plate 217A and extending upward along the Z-axis. The horizontal base plate 217A is secured to the slider 216 via screws, snaps, adhesive, or the like, and includes a bottom groove 217C to guide the bracket 217 in back-and-forth movement along the X-axis on a guide rail 218 secured to the base 100, thereby preventing the support platform 213 from shaking during movement. The vertical end plates 217B are provided with screw holes or other fixing features for connecting and securing the Y-axis movement assembly 220.

[0065] In some embodiments, vertical end plates 217B are secured to horizontal base plate 217A via supports 217D. Figure 4B As shown, the support member 217D is in the shape of a hollow inverted convex letter, with the seal 219 of the X-axis moving assembly 210 passing through the middle, the flat top is fixedly connected to the vertical end plate 217B, and the protruding bottom is fixedly assembled to the horizontal bottom plate 217A. Figure 4A and 4C As shown, the seal 219 is plate-shaped and extends along the X-axis to seal the hollow chamber 140 after the X-axis moving assembly 210 is installed in the hollow chamber 140 of the base 100, preventing skin debris or foreign matter in the environment from entering the hollow chamber 140 and causing internal contamination of the device.

[0066] like Figure 5 As shown, similar to the X-axis moving assembly 210, the Y-axis moving assembly 220 also includes a motor 221, a transmission device 222, and a support platform 223. The vertical end plate 217B of the bracket 217 of the X-axis moving assembly 210 supports the motor 221, the transmission device 222, and the support platform 223 on the support platform 213. The motor 221 together with the transmission device 222 can move the support platform 223 back and forth in the direction along the Y axis, and the support platform 223 supports the Z-axis moving assembly 230 thereon. In the example shown, the transmission device 222 includes a second transmission belt 224 and a lead screw 225, and the support platform 223 includes a slider 226 and a bracket 227 fixed to the slider 226 (see Figure 6 The second transmission belt 224 transmits the rotation of the output shaft of the motor 221 to the lead screw 225 , which in turn drives the bracket 227 to move back and forth along the Y-axis direction through the screw engagement with the slider 226 .

[0067] like Figure 6 As shown, the bracket 227 is generally C-shaped and includes a horizontal upper platform 227B and a horizontal lower platform 227C connected by a vertical fixing plate 227A. The Z-axis moving assembly 230 is disposed on the upper platform 227B, and the skin flap cutting mechanism 300 is disposed on the lower platform 227C.

[0068] The Z-axis movement assembly 230 includes a motor 231 and a transmission 232. The output shaft of the motor 231 is connected to the skin-cutting mechanism 300 via the transmission 232, and can move the skin-cutting mechanism 300 back and forth along the Z-axis. In the illustrated example, the transmission 232 is a gear structure. The motor 231 applies downward pressure to the skin-cutting mechanism 300 along the Z-axis, facilitating downward cutting of the skin.

[0069] Therefore, the three-dimensional moving mechanism 200 uses the X-axis moving component 210, the Y-axis moving component 220 and the Z-axis moving component 230 to move the skin flap cutting mechanism 300 back and forth in the X-axis, Y-axis and Z-axis directions, so that the skin flap cutting mechanism 300 can cut the skin flap placed on the base 100 into a shape that meets the requirements of the skin grafting surgery.

[0070] like Figure 7A and 7B As shown, the skin flap cutting mechanism 300 follows the movement of the three-dimensional moving mechanism 200 to cut the skin flap. The skin flap cutting mechanism 300 includes a cutting head assembly 310 connected to the transmission device 232 of the Z-axis moving assembly 230. Figures 8A-8C As shown, the cutting head assembly 310 includes a cutting head 311 , a fork 312 and an extension rod 313 , and the cutting head 311 is connected to the extension rod 313 via the fork 312 .

[0071] like Figure 8B As shown, the cutting head 311 is cylindrical and includes a rotational axis 311A ​​extending perpendicularly outward from the center of the top and bottom surfaces of the cylinder. One or more (five shown) parallel cutting blades 311B are fixed to the outer circumference of the cylinder perpendicular to the central axis (e.g., by welding, threading, or riveting). Thus, the cutting blades 311B can rotate about the rotational axis 311A ​​and perform the cutting operation. It is advantageous to keep the diameter ratio of the cutting blades 311B to the cylinder as small as possible to ensure that the cutting blades 311B are not easily damaged or bent. The rotational axis 311A ​​of the cutting head 311 is rotatably connected to the lower ends of the two prongs 312A and 312B of the fork-shaped member 312. The top of the fork-shaped member 312 is in turn connected to one end of an extension rod 313, while the opposite end of the extension rod 313 is connected to the transmission device 232 of the Z-axis movement assembly 230.

[0072] In some embodiments, as Figure 8CAs shown, the fork 312 is configured as a quick-release structure (for example, fork 312A can be removably connected to another fork 312B), and the cutting head 311 is configured as a disposable component. The fork 312 allows for quick replacement of the cutting head 311, allowing it to be discarded after a certain number of skin grafts have been performed. In some embodiments, the cutting head 311 and fork 312 are configured as disposable components, and the fork 312 is removably secured to the extension rod 313 by means of a screw, etc., allowing both the cutting head 311 and fork 312 to be discarded after a certain number of skin grafts have been performed. In some embodiments, the cutting head 311, fork 312, and extension rod 313 are configured as disposable components, and the extension rod 313 is secured to a hole in the transmission device 232 of the Z-axis movement assembly 230 by means of a screw, etc., allowing the cutting head 311, fork 312, and extension rod 313 to be discarded after a certain number of skin grafts have been performed.

[0073] return Figure 7A and 7B In some embodiments, the skin flap cutting mechanism 300 further includes a cutting head rotation assembly 320 for driving the cutting head assembly 310 to rotate about the Z-axis, thereby changing the direction in which the cutting blade 311B cuts the skin flap. The cutting head rotation assembly 320 includes a motor 321 and a transmission 322. In the illustrated example, the transmission 322 includes a third transmission belt 322A and a drive wheel 322B fixed to an extension rod. The third transmission belt 322A transmits the rotation of the output shaft of the motor 321 to the drive wheel 322B, thereby driving the cutting head assembly 310 to rotate in another cutting direction. In some embodiments, the lower platform 227C of the support platform 223 of the Y-axis moving assembly 220 is stepped, with the motor 321 and the drive wheel 322B respectively disposed on the upper and lower steps of the lower platform 227C.

[0074] The following combination Figures 1A to 8C The following describes how to operate the skin graft cutting device 10 of the present invention. During use, the operator places the skin graft to be cut flat on the negative pressure plate 151 of the skin graft securing assembly 150 of the base 100 and activates the negative pressure source via the control panel 160. The negative pressure source applies negative pressure to the skin graft through the small holes 153 in the negative pressure plate 151, thereby securing the skin graft to the upper surface of the negative pressure plate 151.

[0075] The operator uses the three-dimensional movement mechanism 200 to move the cutting head 311 of the cutting head assembly 310 above the edge of the skin flap. After determining the initial cutting position of the skin flap, the operator uses the Z-axis movement assembly 230 of the three-dimensional movement mechanism 200 to move the cutting head 311 downward onto the skin flap and apply a downward force to the skin flap.

[0076] First, the 3D motion mechanism 200 moves the cutting head 311 along the X-axis, performing a first cut on the skin along the X-axis. After the first cut along the X-axis, if there is any uncut portion of the skin along the perpendicular Y-axis, the 3D motion mechanism 200 moves the cutting head 311 along the Y-axis to the uncut portion and performs a second cut on the skin along the X-axis. This step is repeated until there is no uncut portion along the Y-axis.

[0077] After completing the X-axis cut, the operator uses the cutting head rotation assembly 320 of the skin cutting mechanism 300 to rotate the cutting head assembly 310, and thus the cutting head 311, 90 degrees to perform the cut along the Y-axis. The three-dimensional movement mechanism 200 then moves the cutting head 311 along the Y-axis, performing a first cut along the skin. After the first Y-axis cut, if any uncut portion of the skin remains along the X-axis, the three-dimensional movement mechanism 200 moves the cutting head 311 along the X-axis to the uncut portion and performs a second cut along the Y-axis. This process is repeated until no uncut portion remains along the X-axis.

[0078] After the skin flap is cut, the three-dimensional moving mechanism 200 and the skin flap cutting head 300 are moved to the initial position, the negative pressure source of the skin flap fixing assembly 150 is deactivated, and the cut skin flap is removed from the negative pressure plate 151 of the skin flap fixing assembly 150 .

[0079] In other embodiments, the cutting head 311 may also cut the skin flap several times along directions different from the X-axis and the Y-axis.

[0080] Second embodiment

[0081] Figure 9 A second embodiment of a dermaplaning device 1010 according to the present invention is shown. Reference numerals in dermaplaning device 10, plus 1000, are used to denote the same or similar structures in dermaplaning device 10. Similar to dermaplaning device 10, dermaplaning device 1010 includes a base 1100, a three-dimensional movement mechanism 1200, and a dermaplaning mechanism 1300 located on base 1100. The structures of base 1100 and dermaplaning mechanism 1300 are substantially identical to base 100 and dermaplaning mechanism 300 of the first embodiment. The following description will primarily focus on three-dimensional movement mechanism 1200.

[0082] The three-dimensional moving mechanism 1200 is placed on the base 1100 and is used to move the skin flap cutting mechanism 1300 along the X-axis, Y-axis and Z-axis directions. Figure 10 As shown, the three-dimensional moving mechanism 1200 includes an X-axis moving component 1210 , a Y-axis moving component 1220 and a Z-axis moving component 1230 .

[0083] See also Figure 11 As shown, the X-axis moving assembly 1210 includes a motor 1211, a transmission device 1212, and a support platform 1213. The motor 1211, together with the transmission device 1212, can move the support platform 1213 back and forth along the X-axis direction, and the support platform 1213 supports the Y-axis moving assembly 1220 thereon. In the example shown, the transmission device 1212 includes a first transmission belt 1214, and the support platform 1213 includes a slider 1216 and a bracket 1217 fixed to the slider 1216. The slider 1216 is directly connected to the first transmission belt 1214. The first transmission belt 1214 transmits between the output shaft of the motor 1211 and the fixed shaft 1226, thereby driving the support platform 1213 to move back and forth.

[0084] like Figure 12 As shown, similar to X-axis moving assembly 1210, Y-axis moving assembly 1220 also includes a motor 1221, a transmission 1222, and a support platform 1223. Motor 1221, together with transmission 1222, can move support platform 1223 back and forth along the Y-axis, while support platform 1223 supports Z-axis moving assembly 1230 thereon. In the illustrated example, transmission 1222 includes a second transmission belt 1224, and support platform 1223 is directly fixed to second transmission belt 1224. Second transmission belt 1224 transmits power between the output shaft of motor 1221 and fixed shaft 1226, thereby driving support platform 1223 to move back and forth.

[0085] The structure of the Z-axis moving assembly 1230 is substantially the same as that of the Z-axis moving assembly 230 of the first embodiment.

[0086] Therefore, the three-dimensional moving mechanism 1200 uses the X-axis moving component 1210, the Y-axis moving component 1220 and the Z-axis moving component 1230 to move the skin flap cutting mechanism 1300 back and forth in the X-axis, Y-axis and Z-axis directions, so that the skin flap cutting mechanism 1300 can cut the skin flap placed on the base 1100 into a shape that meets the requirements of the skin grafting surgery.

[0087] The disclosed skin graft cutting device can produce skin grafts of various sizes through programmable and three-dimensional motion, such as mesh-shaped skin grafts and skin grafts with particle sizes of 0.1 mm x 0.1 mm or larger. The disclosed skin graft cutting device has a wide range of applications, is easy to operate, and features adjustable mesh and skin graft sizes. The device produces uniform particle morphology and high activity retention, making it particularly suitable for use in various skin transplant procedures.

[0088] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications may be made to the exemplary embodiments of the present disclosure without departing substantially from the spirit and scope of the present disclosure. Therefore, all such changes and modifications are intended to be within the scope of protection of the present disclosure as defined by the appended claims. The present disclosure is defined by the appended claims, and equivalents of these claims are intended to be included therein.

Claims

1. A skin flap cutting device, characterized in that: The skin flap cutting device comprises: a skin graft cutting mechanism, the skin graft cutting mechanism being used to cut the skin graft into a shape that meets the requirements of the skin grafting surgery, and comprising a cutting head assembly, the cutting head assembly comprising a cutting head, a fork-shaped member, and an extension rod, wherein the cutting head is connected to the extension rod via the fork-shaped member; and a three-dimensional moving mechanism, the three-dimensional moving mechanism holding the skin flap cutting mechanism and comprising an X-axis moving component, a Y-axis moving component, and a Z-axis moving component, thereby being capable of moving the skin flap cutting mechanism along mutually orthogonal X, Y, and Z axis directions; a base on which the three-dimensional movement mechanism is disposed; and A cutting head rotating assembly, which is used to drive the cutting head assembly to rotate and includes a motor and a transmission device. The transmission device of the cutting head rotating assembly includes a belt and a driving wheel fixed to the extension rod. The belt of the cutting head rotating assembly transmits the rotation of the output shaft of the motor of the cutting head rotating assembly to the driving wheel and the extension rod. Thus, the extension rod is fixed to the Z-axis moving assembly and the driving wheel of the transmission device of the cutting head rotating assembly, and drives the cutting head assembly to move and rotate along the Z axis respectively.

2. The skin flap cutting device according to claim 1, characterized in that: The top of the base is provided with an opening covered by a leather fixing assembly.

3. The skin flap cutting device according to claim 2, characterized in that: The skin flap fixing assembly includes an upper negative pressure plate and a lower bearing plate stacked together.

4. The skin flap cutting device according to claim 3, characterized in that: Small holes are distributed on the negative pressure plate, so that the skin piece to be cut can be laid flat on the negative pressure plate and cover at least a portion of the small holes.

5. The skin flap cutting device according to claim 4, characterized in that: A plurality of protrusions are provided on the carrying plate so that the negative pressure plate can be placed on the carrying plate.

6. The skin flap cutting device according to claim 5, characterized in that: The area between the negative pressure plate and the plurality of protrusions in the middle of the supporting plate is an air flow channel in fluid communication with the small hole.

7. The skin flap cutting device according to claim 3, characterized in that: The carrier plate is provided with a negative pressure source interface, which can be connected to a negative pressure source fluid that is external or built into the skin flap cutting device.

8. The skin flap cutting device according to claim 1, characterized in that: The base is equipped with a control panel for controlling the operation of the skin flap cutting device.

9. The skin flap cutting device according to any one of claims 1 to 8, characterized in that: The X-axis moving assembly includes a motor, a transmission device, and a support platform. The motor of the X-axis moving assembly together with the transmission device of the X-axis moving assembly can move the support platform of the X-axis moving assembly back and forth along the X-axis direction, and the support platform of the X-axis moving assembly supports the Y-axis moving assembly thereon.

10. The skin flap cutting device according to claim 9, characterized in that: The supporting platform of the X-axis moving assembly includes a slider and a bracket fixed on the slider.

11. The skin flap cutting device according to claim 10, characterized in that: The bracket of the X-axis moving assembly is roughly C-shaped and includes a horizontal base plate fixed to the slider of the X-axis moving assembly and two vertical end plates located at both ends of the horizontal base plate, and the vertical end plates are used to connect to the Y-axis moving assembly.

12. The skin flap cutting device according to claim 10, characterized in that: The bracket of the X-axis moving assembly includes a bottom groove to guide the bracket of the X-axis moving assembly to move back and forth along the X-axis direction on the guide rail fixed to the base.

13. The skin flap cutting device according to claim 11, characterized in that: The X-axis moving assembly further includes a plate-shaped sealing member to seal the base after the X-axis moving assembly is installed in the base.

14. The skin flap cutting device according to claim 13, characterized in that: The vertical end plate is fixed to the horizontal bottom plate through a supporting member. The supporting member is in a hollow inverted convex shape and a sealing member passes through the middle thereof.

15. The skin flap cutting device according to claim 14, characterized in that: The top of the support is fixed to the vertical end plates, while the protruding bottom is mounted to the horizontal bottom plate.

16. The skin flap cutting device according to claim 10, characterized in that: The transmission device of the X-axis moving assembly includes a belt and a screw. The belt of the X-axis moving assembly transmits the rotation of the output shaft of the motor of the X-axis moving assembly to the screw of the X-axis moving assembly, and the screw of the X-axis moving assembly is spirally engaged with the slider of the X-axis moving assembly.

17. The skin flap cutting device according to claim 10, characterized in that: The transmission device of the X-axis moving assembly includes a belt, and the slider of the X-axis moving assembly is directly fixed on the belt of the X-axis moving assembly.

18. The skin flap cutting device according to any one of claims 1 to 8, characterized in that: The Y-axis moving assembly includes a motor, a transmission device, and a support platform. The motor of the Y-axis moving assembly and the transmission device of the Y-axis moving assembly can move the support platform of the Y-axis moving assembly back and forth along the Y-axis direction. The support platform of the Y-axis moving assembly supports the Z-axis moving assembly thereon.

19. The skin flap cutting device according to claim 18, characterized in that: The supporting platform of the Y-axis moving component includes a slider and a bracket fixed on the slider.

20. The skin flap cutting device according to claim 19, characterized in that: The bracket of the Y-axis moving assembly is generally C-shaped and includes an upper platform and a lower platform connected by a fixing plate.

21. The skin flap cutting device according to claim 20, characterized in that: The Z-axis moving assembly is arranged on the upper platform, and the skin flap cutting mechanism is arranged on the lower platform.

22. The skin flap cutting device according to claim 19, characterized in that: The transmission device of the Y-axis moving assembly includes a belt and a screw. The belt of the Y-axis moving assembly transmits the rotation of the output shaft of the motor of the Y-axis moving assembly to the screw of the Y-axis moving assembly, and the screw of the Y-axis moving assembly is spirally engaged with the slider of the Y-axis moving assembly.

23. The skin flap cutting device according to claim 19, characterized in that The transmission device of the Y-axis moving assembly includes a belt, and the slider of the Y-axis moving assembly is directly connected and fixed to the belt of the Y-axis moving assembly.

24. The skin flap cutting device according to any one of claims 1 to 8, characterized in that: The Z-axis moving assembly includes a motor and a transmission device, and the motor of the Z-axis moving assembly is connected to the skin flap cutting mechanism through the transmission device of the Z-axis moving assembly and can move the skin flap cutting mechanism back and forth along the Z-axis direction.

25. The skin flap cutting device according to claim 24, characterized in that The transmission device of the Z-axis moving component is a gear structure.

26. The skin flap cutting device according to claim 1, characterized in that The cutting head is configured as a disposable component removable from the fork, or the cutting head and fork are configured as disposable components removable from the extension rod, or the cutting head, fork and extension rod are configured as disposable components removable from the Z-axis moving assembly.

27. The skin flap cutting device according to claim 1, characterized in that The cutting head is cylindrical, and one or more parallel cutting blades are fixed on the outer peripheral surface of the cylinder perpendicular to the central axis of the cylinder.

28. The skin flap cutting device according to claim 27, characterized in that The cutting head includes a rotating shaft extending vertically outward from the center of the top and bottom surfaces of the cylinder.

29. The skin flap cutting device according to claim 28, characterized in that The rotating shaft of the cutting head is rotatably connected to the two prongs of the fork, and the top of the fork is connected to one end of the extension rod.

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