CN110788906A

CN110788906A - Skin piece cutting equipment

Info

Publication number: CN110788906A
Application number: CN201810869138.3A
Authority: CN
Inventors: 肖仕初; 帅超群; 夏照帆; 纪世召; 郑勇军; 贲道锋; 吴琼; 姜玉
Original assignee: Shanghai Changhai Hospital
Current assignee: Shanghai Changhai Hospital
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2020-02-14
Also published as: WO2020025052A1

Abstract

The present disclosure relates to a flap cutting apparatus, comprising: the skin cutting mechanism cuts the skin into a shape which meets the requirements of the skin grafting operation; and a three-dimensional moving mechanism holding the flap cutting mechanism and including an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly so as to be capable of moving the flap cutting mechanism in X, Y and Z-axis directions orthogonal to each other; and a base on which the three-dimensional moving mechanism is provided. The skin slice cutting equipment disclosed by the invention has the advantages of wide application range, simplicity and convenience in operation, adjustable size and specification of the pull net and the skin slice, uniform particle shape and high activity retention, and is particularly suitable for various skin transplantation operations.

Description

Skin piece cutting equipment

Technical Field

The present disclosure relates generally to the field of skin grafting, and more particularly to a skin slice cutting apparatus.

Background

Currently, the treatment of deep burns of very large areas remains a significant challenge for clinicians. Timely wound surface repair is one of the keys for improving the success rate of treatment. If a patient with large-area deep burn cannot seal the wound surface in the early stage, great difficulty is brought to subsequent treatment. Therefore, how to repair a large area of deep wound surface by using a limited donor skin area and ensure the survival rate of transplantation is an urgent problem to be solved in the treatment of critically ill burn patients.

The existing skin grafting method can be divided into net skin grafting, stamp skin grafting, particle skin grafting and the like according to the shape of the skin, and various technologies need to use special equipment to prepare the skin. The net pulling skin grafting operation needs to use a net pulling skin grafting machine, but the net spacing of the net pulling skin grafting machine is relatively fixed, the net pulling skin grafting machine cannot be flexibly adjusted according to the condition of a wound surface, and the shape after the operation is not very attractive. A MEEK skin grafting machine is needed in representative MEEK skin grafting in stamp skin grafting, but the cleaning and disinfection procedures of the MEEK skin grafting machine are complex, special training personnel are needed for operation, a blade is expensive, cross infection of diseases can be caused by repeated use in clinic, and in addition, after repeated disinfection and repeated use, the cutting effect can be influenced by dulling of the blade edge. The particle skin grafting needs to use manual scissors or a medical skin breaking machine, the manual scissors are simple and convenient to manufacture, special instruments are not needed, time and labor are wasted, and the skin slices with the size of 20mm multiplied by 20mm can be cut for more than 30 minutes by at least 2 persons to be less than 1mm²The preparation of the particles is standard, and the particle size is quite nonuniform; the rotary medical skin crusher can quickly prepare particle skins which accord with the particle size in a short time, but has the problems of irregular particle size and extremely low particle activity.

Disclosure of Invention

The present disclosure provides a novel flap cutting apparatus for overcoming the disadvantages of the prior art.

According to one aspect of the present disclosure, a flap cutting apparatus includes a flap cutting mechanism, a three-dimensional moving mechanism, and a base. The skin cutting mechanism cuts the skin into a shape which meets the requirements of the skin grafting operation. The three-dimensional moving mechanism holds the leather sheet cutting mechanism and comprises an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, so that the leather sheet cutting mechanism can be moved along X, Y and Z-axis directions which are orthogonal to each other. The three-dimensional moving mechanism is arranged on the base.

In some embodiments, the top of the base is provided with an opening covered by a flap retaining assembly.

In some embodiments, the flap-securing assembly includes an upper suction plate and a lower carrier plate stacked together.

In some embodiments, the negative pressure plate is distributed with small holes, so that the skin to be cut can be laid flat on the negative pressure plate and cover at least a part of the small holes.

In some embodiments, the carrier plate is provided with a plurality of protrusions so that the negative pressure plate can rest on the carrier plate.

In some embodiments, the area between the negative pressure plate and the plurality of protrusions in the middle of the carrier plate is an airflow channel in fluid communication with the aperture. In some embodiments, the carrier plate is provided with a negative pressure source interface that can be fluidly connected to a negative pressure source that is external or internal to the flap cutting device.

In some embodiments, the base is equipped with a control panel for controlling the operation of the flap cutting apparatus.

In some embodiments, the X-axis movement assembly includes a motor, a transmission, and a support platform, the motor along with the transmission being capable of moving the support platform back and forth in the X-axis direction, the support platform supporting the Y-axis movement assembly thereon.

In some embodiments, the support platform includes a slide and a bracket secured to the slide.

In some embodiments, the stand is generally C-shaped and includes a horizontal bottom plate fixed to the slide, and two vertical end plates at both ends of the horizontal bottom plate for connecting the Y-axis moving assembly.

In some embodiments, the carriage includes a bottom groove to guide the carriage to move back and forth in the X-axis direction on a rail fixed to the base.

In some embodiments, the X-axis moving assembly further comprises a plate-like seal to seal the base after the X-axis moving assembly is installed in the base.

In some embodiments, the vertical end plate is secured to the horizontal floor by a support that is hollow and inverted dogleg shaped and has a seal passing therebetween.

In some embodiments, the top of the support is fixed to the vertical end plate, while the protruding bottom is fitted to the horizontal bottom plate.

In some embodiments, the transmission includes a belt and a lead screw, the belt transmitting rotation of the output shaft of the motor to the lead screw, and the lead screw being in threaded engagement with the slider.

In some embodiments, the transmission comprises a belt, and the blocks are directly fixed to the belt.

In some embodiments, the Y-axis movement assembly includes a motor, a transmission, and a support platform, the motor along with the transmission being capable of moving the support platform back and forth in the Y-axis direction, the support platform supporting the Z-axis movement assembly thereon.

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

In some embodiments, the Z-axis motion assembly is disposed on the upper platform and the flap cutting mechanism is disposed on the lower platform.

In some embodiments, the transmission comprises a belt, and the slider is directly attached to the belt.

In some embodiments, the Z-axis movement assembly includes a motor and a transmission, and the motor is coupled to the flap cutting mechanism through the transmission and is capable of moving the flap cutting mechanism back and forth in the Z-axis direction.

In some embodiments, the transmission is a gear arrangement.

In some embodiments, the flap cutting mechanism includes a cutting head assembly.

In some embodiments, the cutting head assembly includes a cutting head, a fork, and an elongated rod, and the cutting head is coupled to the elongated rod by the fork, and the elongated rod is coupled to the three-dimensional movement mechanism.

In some embodiments, the cutting head is configured as a disposable component that is removable from the prongs, or the cutting head and the prongs are configured as a disposable component that is removable from the elongated rod, or the cutting head, the prongs, and the elongated rod are configured as a disposable component that is removable from the Z-axis movement assembly.

In some embodiments, the cutting head is cylindrical in shape and one or more parallel cutting blades are affixed to the outer peripheral surface of the cylinder perpendicular to the central axis of the cylinder.

In some embodiments, the cutting head includes a rotating shaft that extends perpendicularly outward from the center of the top and bottom surfaces of the cylinder.

In some embodiments, the axis of rotation of the cutting head is rotatably connected to the two tines of the fork, and the top of the fork is connected to one end of the elongate rod.

In some embodiments, the flap cutting mechanism further comprises a cutting head rotating assembly for driving the cutting head assembly in rotation.

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

In some embodiments, the transmission includes a belt and a drive wheel secured to the cutting head.

Drawings

In the following description with reference to the accompanying drawings, in which like or similar reference numerals refer to like elements or features, technical details of the present invention will be described in detail by way of illustration with reference to the drawings. Wherein:

FIGS. 1A and 1B are a perspective view of a flap cutting apparatus according to a first embodiment of the present invention and a perspective view with parts removed, respectively;

FIGS. 2A-2C are top plan and perspective views, respectively, of a flap-securing assembly of a flap cutting apparatus according to a first embodiment of the present invention with the suction plate removed;

FIG. 3 is a perspective view of a three-dimensional moving mechanism of the flap cutting device according to the first embodiment of the present invention;

FIG. 4A is a perspective view of an X-axis moving assembly of the skin cutting apparatus according to the first embodiment of the present invention, FIG. 4B is a perspective view of a support member of the X-axis moving assembly, and FIG. 4C is an assembled perspective view of a sealing member of the X-axis moving assembly;

FIG. 5 is a perspective view of the Y-axis moving assembly of the flap cutting apparatus according to the first embodiment of the present invention;

FIG. 6 is a perspective view of the Z-axis movement assembly of the flap cutting device according to the first embodiment of the present invention;

FIGS. 7A and 7B are perspective views of a flap cutting mechanism of the flap cutting apparatus according to the first embodiment of the present invention;

FIG. 8A is a perspective view of the cutting head assembly of the flap cutting mechanism according to the first embodiment of the present invention; FIG. 8B is a perspective view of a cutting head of the cutting head assembly; FIG. 8C is a schematic view of the assembly of the cutting head and fork;

FIG. 9 is a perspective view of a flap cutting apparatus according to a second embodiment of the present invention;

FIG. 10 is a perspective view of a three-dimensional moving mechanism of a flap cutting apparatus according to a second embodiment of the present invention;

FIG. 11 is a perspective view of an X-axis movement assembly of a flap cutting apparatus according to a second embodiment of the present invention;

fig. 12 is a perspective view of a Y-axis moving assembly of the flap cutting apparatus according to the second embodiment of the present invention.

Detailed Description

The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the disclosure. It should be understood, however, that the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, the embodiments described below are intended to provide a more complete disclosure of the present disclosure, and to fully convey the scope of the disclosure to those skilled in the art. It is also to be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

It should be understood that like reference numerals refer to like elements throughout the several views. In the drawings, the size of some of the features may be varied for clarity.

It is to be understood that the terminology used in the description is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. All terms (including technical and scientific terms) used in the specification have the meaning commonly understood by one of ordinary skill in the art unless otherwise defined. Well-known functions or constructions may not be described in detail for brevity and/or clarity.

It should be understood that the X-axis, Y-axis, and Z-axis in the description are only used to indicate the three-dimensional structural orientation of the device, and that there are different axial representations based on the coordinate origin of different labels in the device.

As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. The terms "comprising," "including," and "containing" when used in this specification specify the presence of stated features, but do not preclude the presence or addition of one or more other features. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items. The terms "between X and Y" and "between about X and Y" as used in the specification should be construed to include X and Y. The term "between about X and Y" as used herein means "between about X and about Y" and the term "from about X to Y" as used herein means "from about X to about Y".

In the description, when an element is referred to as being "on," "attached" to, "connected" to, "coupled" to, or "contacting" another element, etc., another element may be directly on, attached to, connected to, coupled to, or contacting the other element, or intervening elements may be present. In contrast, when an element is referred to as being "directly on," "directly attached to," directly connected to, "directly coupled to," or "directly contacting" another element, there are no intervening elements present. In the description, one feature is disposed "adjacent" another feature, and may mean that one feature has a portion overlapping with or above or below an adjacent feature.

In the specification, spatial relations such as "upper", "lower", "left", "right", "front", "rear", "high", "low", and the like may explain the relation of one feature to another feature in the drawings. It will be understood that the spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, features originally described as "below" other features may be described as "above" other features when the device in the figures is inverted. The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the relative spatial relationships may be interpreted accordingly.

Fig. 1A and 1B show a flap cutting apparatus 10 according to a first embodiment of the present invention. As shown, the flap cutting apparatus 10 includes a base 100, and a three-dimensional moving mechanism 200 and a flap cutting mechanism 300 on the base 100.

The base 100 is used to support various components of the flap cutting apparatus 10, including the three-dimensional movement mechanism 200, the flap cutting mechanism 300, and other components such as a power source, touch screen, knobs, etc. The three-dimensional moving mechanism 200 is placed on the base 100 and firmly holds the flap cutting mechanism 300. The three-dimensional moving mechanism 200 can move the skin cutting mechanism 300 along the directions of X, Y and Z axis which are orthogonal to each other, so that the skin cutting mechanism 300 can cut the skin into the shape which meets the requirement of the skin grafting operation.

As shown in fig. 1A and 1B, the base 100 has a substantially rectangular parallelepiped shape, 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, top wall 120, and side walls 130 collectively define a hollow chamber 140 of the chassis 100. The hollow chamber 140 accommodates therein components such as a power source, a negative pressure source, a controller, a driver, and the like, and accommodates most of the three-dimensional movement mechanism 200. The top wall 120 is provided with an opening 121 and is covered with a flap fixing member 150. An operator may access the components within the hollow chamber 140 through the opening 121 when needed (e.g., during maintenance). The side wall 130 is provided with a vent 131 to maintain the components within the hollow chamber 140 at a suitable temperature. In one embodiment, one side of the base 100 is fitted with a control panel 160. Various control switches for controlling the operation of the flap cutting device 10 may be disposed on the control panel 160, including a power switch 161, and input/output devices (e.g., a knob 162 and a touch screen 163) for inputting instructions and viewing states by an operator.

The flap holder assembly 150 is adapted to securely hold a flap to be cut in a flat position so that the flap cutter mechanism 300 can perform a flap cutting action on the flap holder assembly 150. As shown in fig. 2A-2C, the flap-holding assembly 150 includes an upper negative pressure plate 151 and a lower carrier plate 152 stacked together. The negative pressure plate 151 is uniformly distributed with small holes 153, and the leather sheet to be cut is laid on the negative pressure plate 151 and covers a part of the small holes 153. The carrier plate 152 is distributed with a plurality of protrusions 154 (e.g., semicircular, semi-elliptical cross-section, etc.) having the same height so that the negative pressure plate 151 can stably rest on the carrier plate 152 in a horizontal manner. The area between the carrier plate 152 and the negative pressure plate middle protrusion 153 is an air flow channel 155, and the central area of the carrier plate 152 is provided with a negative pressure source interface 156. The negative pressure source interface 156 may be fluidly connected to a negative pressure source (not shown) that may be external or internal to the flap cutting apparatus 10, such that the negative pressure source may apply a negative pressure to the flap through the negative pressure source interface 156, the air flow channel 155, and the aperture 153 in the carrier plate 152 to hold the flap securely in place on the negative pressure plate 151. After the flap is cut, the negative pressure source is deactivated so that the flap can be easily removed from the negative pressure plate 151.

The three-dimensional moving mechanism 200 is placed on the base 100, and is used to move the flap cutting mechanism 300 in the X-axis, Y-axis, and Z-axis directions. As shown in fig. 3, 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.

Referring to fig. 4A in conjunction with fig. 1, the X-axis moving assembly 210 includes a motor 211, a transmission 212, and a support platform 213. The motor 211 together with the actuator 212 may move the support platform 213 back and forth in the X-axis direction, and the support platform 213 supports the Y-axis moving assembly 220 thereon. In the example shown, the transmission 212 comprises a drive belt 214 and a lead screw 215, and the support platform 213 comprises a slide 216 and a bracket 217 fixed to the slide 216. The drive belt 214 transmits the rotation of the output shaft of the motor 211 to the lead screw 215, and the lead screw 215 in turn moves the carriage 217 back and forth in the X-axis direction by the screw engagement with the slider 216.

In some embodiments, the brace 217 is generally C-shaped and includes a horizontal bottom plate 217A, and two vertical end plates 217B located at both ends of the horizontal bottom plate 217A and projecting upward in the Z-axis direction. The horizontal base plate 217A is fixed to the slider 216 by means of screws, snaps, adhesives, etc., and includes a bottom groove 217C to guide the bracket 217 to move back and forth in the X-axis direction on a guide rail 218 fixed to the base 100, thereby ensuring that the support platform 213 does not shake during movement. Vertical end plate 217B is provided with screw holes or other securing features for connecting and securing Y-axis motion assembly 220.

In some embodiments, vertical end plate 217B is secured to horizontal bottom plate 217A by support 217D. As shown in fig. 4B, the support 217D has a hollow inverted-convex shape, a middle through which the sealing member 219 of the X-axis moving assembly 210 passes, a flat top portion fixedly connected to the vertical end plate 217B, and a protruding bottom portion fixedly fitted to the horizontal bottom plate 217A. As shown in fig. 4A and 4C, the sealing member 219 has a plate shape 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 debris of a leather sheet or foreign substances in the environment from entering the hollow chamber 140 to contaminate the inside of the apparatus.

As shown in fig. 5, the Y-axis moving assembly 220 also includes a motor 221, a transmission 222, and a support platform 223, similar to the X-axis moving assembly 210. The vertical end plate 217B of the bracket 217 of the X-axis moving assembly 210 supports the motor 221, the transmission 222, and the support platform 223 on the support platform 213. The motor 221, together with the actuator 222, may 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 222 comprises a drive belt 224 and a lead screw 225, and the support platform 223 comprises a slide 226 and a bracket 227 fixed on the slide 226 (see fig. 6). The driving belt 224 transmits the rotation of the output shaft of the motor 221 to the lead screw 225, and the lead screw 225 in turn moves the holder 227 back and forth in the Y-axis direction by screw engagement with the slider 226.

As shown in fig. 6, 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 stage 227B, and the flap cutting mechanism 300 is disposed on the lower stage 227C.

The Z-axis moving assembly 230 includes a motor 231 and an actuator 232. An output shaft of the motor 231 is connected to the flap cutting mechanism 300 through a transmission 232, and can move the flap cutting mechanism 300 back and forth in the Z-axis direction. In the illustrated example, the transmission 232 is a gear structure. The motor 231 may apply downward pressure to the flap cutting mechanism 300 in the direction of the Z-axis to facilitate the flap cutting mechanism 300 in cutting the flap downward.

Therefore, the three-dimensional moving mechanism 200 can move the skin cutting mechanism 300 back and forth in the directions of the X-axis, the Y-axis and the Z-axis by using the X-axis moving assembly 210, the Y-axis moving assembly 220 and the Z-axis moving assembly 230, so that the skin cutting mechanism 300 can cut the skin placed on the base 100 into a shape meeting the requirements of the skin grafting operation.

As shown in fig. 7A and 7B, the flap cutting mechanism 300 cuts the flap following the movement of the three-dimensional moving mechanism 200. The flap cutting mechanism 300 includes a cutting head assembly 310 coupled to the transmission 232 of the Z-axis movement assembly 230. As shown in fig. 8A-8C, the cutting head assembly 310 includes a cutting head 311, a fork 312, and an elongated rod 313, and the cutting head 311 is coupled to the elongated rod 313 by the fork 312.

As shown in fig. 8B, the cutting head 311 has a cylindrical shape and includes a rotational shaft 311A projecting perpendicularly outward from the center of the top and bottom surfaces of the cylinder. One or more (5 shown) parallel cutting blades 311B are fixed (e.g., by welding, screwing, riveting, or the like) on the outer circumferential surface of the cylinder perpendicularly to the central axis of the cylinder, whereby the cutting blades 311B can rotate about the rotational axis 311A and perform a cutting operation. It is advantageous to keep the diameter ratio of the cutting blade 311B and the cylinder as small as possible to ensure that the cutting blade 311 is not easily damaged, bent. The rotating shaft 311A of the cutting head 311 is rotatably connected to the lower ends of the two

forks

312A and 312B of the fork 312, and the top of the fork 312 is in turn connected to one end of the extension bar 313, while the opposite end of the extension bar 313 is connected to the transmission 232 of the Z-axis movement assembly 230.

In some embodiments, as shown in fig. 8C, the prongs 312 are configured as quick-disconnect structures (e.g., the fork 312A can be removably connected to another fork 312B), and the cutting head 311 is configured as a disposable component. The cutting head 311 can be quickly replaced by the fork 312 to discard the cutting head 311 after a certain number of skin cuts have been made. In some embodiments, the cutting head 311 and the prongs 312 are together configured as a disposable component, and the prongs 312 are removably secured to the elongated rod 313 by screws or the like, the cutting head 311 and the prongs 312 may be discarded together after a certain number of skin cuts have been made. In some embodiments, the cutting head 311, the forks 312 and the extension bar 313 are together configured as a disposable component, and the extension bar 313 is fixed by screwing or the like to a hole in the transmission 232 of the Z-axis moving assembly 230, the cutting head 311, the forks 312 and the extension bar 313 can be discarded at the same time after a certain number of skin cuts have been performed.

Returning to fig. 7A and 7B, in some embodiments, the flap cutting mechanism 300 further includes a cutting head rotating assembly 320 for driving the cutting head assembly 310 to rotate about the Z-axis to change the direction in which the cutting blade 311B cuts the flap. The cutting head rotation assembly 320 includes a motor 321 and a transmission 322. In the illustrated example, the transmission 322 includes a drive belt 322A and a drive wheel 322B secured to the extension bar 312, the drive belt 322A transmitting rotation of the output shaft of the motor 321 to the drive wheel 322B, thereby rotating the cutting head assembly 310 to another cutting direction. In some embodiments, the lower platform 227C of the support platform 223 of the Y-axis moving assembly 220 is stepped, and the motor 321 and the driving wheel 322B are disposed on the upper step and the lower step of the lower platform 227C, respectively.

A method of operating the flap cutting apparatus 10 of the present invention is described below in conjunction with fig. 1-8C. In use, the operator lays the skin to be cut flat against the negative pressure plate 151 of the skin securing assembly 150 of the base 100 and activates the negative pressure source through the control panel 160. The negative pressure source applies negative pressure to the flap through the holes 153 in the negative pressure plate 151, thereby securing the flap to the upper surface of the negative pressure plate 151.

The operator moves the cutting head 311 of the cutting head assembly 310 over the edge of the skin using the three-dimensional movement mechanism 200. After determining the initial cutting position of the skin sheet, the operator moves the cutting head 311 down onto the skin sheet and applies a downward force to the skin sheet by the Z-axis moving assembly 230 of the three-dimensional moving mechanism 200.

First, the three-dimensional moving mechanism 200 moves the cutting head 311 in the X-axis direction, and the cutting head 311 cuts the skin sheet for the first time in the X-axis direction. After the first cutting along the X-axis, if there is an uncut portion of the skin sheet in the vertical Y-axis direction, the three-dimensional moving mechanism 200 moves the cutting head 311 to the uncut portion along the Y-axis direction and performs the second cutting along the X-axis direction on the skin sheet. This step is repeated until there is no uncut portion in the Y-axis direction.

After completing the cutting along the X-axis, the operator rotates the cutting head assembly 310, and thus the cutting head 311, by 90 degrees using the cutting head rotating assembly 320 of the flap cutting mechanism 300, thereby performing the cutting along the Y-axis. The three-dimensional moving mechanism 200 moves the cutting head 311 along the Y-axis direction, and the cutting head 311 cuts the leather sheet for the first time along the Y-axis direction. After the first cutting along the Y-axis, if the skin sheet has an uncut part along the X-axis direction, the three-dimensional moving mechanism 200 moves the cutting head 311 to the uncut part along the X-axis direction and performs the second cutting along the Y-axis direction on the skin sheet. This step is repeated until there is no uncut portion in the X-axis direction.

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

In other embodiments, the cutting head 311 may also make several cuts in a direction other than the X-axis and the Y-axis of the skin sheet.

Second embodiment

Fig. 9 shows a flap cutting apparatus 1010 according to a second embodiment of the present invention. The flap cutting apparatus 1010 will be referred to with the same or similar structure by reference numerals increased by 1000 in the flap cutting apparatus 10. Like the flap cutting apparatus 10, the flap cutting apparatus 1010 includes a base 1100, and a three-dimensional moving mechanism 1200 and a flap cutting mechanism 1300 on the base 1100. The base 1100 and the flap cutting mechanism 1300 are substantially identical in construction to the base 100 and the flap cutting mechanism 300 of the first embodiment, and the three-dimensional moving mechanism 1200 will be described hereinafter.

The three-dimensional moving mechanism 1200 is placed on the base 1100, and is used to move the flap cutting mechanism 1300 in the X-axis, Y-axis, and Z-axis directions. As shown in fig. 10, the three-dimensional moving mechanism 1200 includes an X-axis moving assembly 1210, a Y-axis moving assembly 1220, and a Z-axis moving assembly 1230.

Referring to fig. 11, X-axis movement assembly 1210 includes a motor 1211, a transmission 1212, and a support platform 1213. Motor 1211, along with actuator 1212, moves support platform 1213 back and forth in the X-axis direction, while support platform 1213 supports Y-axis motion assembly 1220 thereon. In the illustrated example, the actuator 1212 includes a drive belt 1214, and the support platform 1213 includes a slider 1216 and a bracket 1217 secured to the slider 1216, the slider 1216 being directly attached to the drive belt 1214. A drive belt 1214 is transmitted between the output shaft of the motor 1211 and the fixed shaft 1216, thereby moving the support platform 1213 back and forth.

As shown in fig. 12, the Y-axis moving assembly 1220 also includes a motor 1221, a transmission 1222, and a support platform 1223, similar to the X-axis moving assembly 1210. The motor 1221 together with the actuator 1222 may move the support platform 1223 back and forth in the Y-axis direction, and the support platform 1223 supports the Z-axis moving assembly 1230 thereon. In the example shown, the transmission 1222 includes a drive belt 1224, and the support platform 1223 is secured directly to the drive belt 1224. A drive belt 1224 is transmitted between the output shaft of the motor 1221 and the fixed shaft 1226, thereby moving the support platform 1223 back and forth.

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

Therefore, the three-dimensional moving mechanism 1200 can move the skin cutting mechanism 1300 back and forth in the directions of the X-axis, the Y-axis and the Z-axis by using the X-axis moving assembly 1210, the Y-axis moving assembly 1220 and the Z-axis moving assembly 1230, so that the skin cutting mechanism 1300 can cut the skin placed on the base 1100 into a shape meeting the requirements of the skin grafting operation.

The skin piece cutting equipment disclosed by the invention can be used for preparing skin pieces with different specifications, such as reticular skin pieces and skin pieces with the particle size of more than 0.1mm multiplied by 0.1mm, through program setting and three-dimensional movement. The skin slice cutting equipment disclosed by the invention has the advantages of wide application range, simplicity and convenience in operation, adjustable size and specification of the pull net and the skin slice, uniform particle shape and high activity retention, and is particularly suitable for various skin transplantation operations.

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 can be made to the exemplary embodiments of the present disclosure without substantially departing from the spirit and scope of the present disclosure. Accordingly, all changes and modifications are intended to be included within the scope of the present disclosure as defined in the appended claims. The disclosure is defined by the following claims, with equivalents of the claims to be included therein.

Claims

1. A flap cutting apparatus, characterized in that the flap cutting apparatus comprises:

the skin cutting mechanism cuts the skin into a shape which meets the requirements of the skin grafting operation; and

a three-dimensional moving mechanism holding the flap cutting mechanism and including an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly so as to be capable of moving the flap cutting mechanism in X, Y and Z-axis directions orthogonal to each other; and

a base on which a three-dimensional moving mechanism is provided.

2. The flap cutting apparatus as defined in claim 1, wherein the top of the base is provided with an opening covered by the flap securing assembly.

3. The flap cutting machine as defined in claim 2, wherein the flap holding assembly includes an upper suction plate and a lower carrier plate stacked together.

4. Flap cutting device according to claim 3, characterized in that the underpressure plate is provided with distributed holes, so that the flap to be cut can be laid flat on the underpressure plate and cover at least a part of the holes.

5. The flap cutting device according to claim 4, characterized in that the carrier plate is provided with a plurality of protrusions so that the negative pressure plate can rest on the carrier plate.

6. The flap cutting device as defined in claim 5, wherein the area between the negative pressure plate and the plurality of protrusions in the middle of the carrying plate is an air flow channel in fluid communication with the aperture.

7. Flap cutting device according to claim 3, characterized in that the carrier plate is provided with a negative pressure source interface which can be fluidically connected to a negative pressure source which is external or internal in the flap cutting device.

8. The flap cutting device as defined in claim 1 wherein the base is equipped with a control panel for controlling operation of the flap cutting device.

9. The skin cutting apparatus according to any one of claims 1 to 8, wherein the X-axis moving assembly includes a motor, a transmission, and a support platform, the motor together with the transmission being capable of moving the support platform back and forth in the X-axis direction, the support platform supporting the Y-axis moving assembly thereon.

10. The flap cutting apparatus as set forth in claim 9 wherein the support platform includes a slider and a bracket secured to the slider.