CN110353772B - Skin cutter capable of adjusting skin cutting shape - Google Patents
Skin cutter capable of adjusting skin cutting shape Download PDFInfo
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- CN110353772B CN110353772B CN201910675441.4A CN201910675441A CN110353772B CN 110353772 B CN110353772 B CN 110353772B CN 201910675441 A CN201910675441 A CN 201910675441A CN 110353772 B CN110353772 B CN 110353772B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/322—Skin grafting apparatus
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Abstract
The adjustable skin-cutting knife comprises a left fixing plate and a right fixing plate, wherein a rear baffle is connected between the rear edges of the left fixing plate and the right fixing plate, a lower connecting rod is connected between the front parts of the lower edges of the left fixing plate and the right fixing plate, an upper connecting rod is connected between the front parts of the upper edges of the left fixing plate and the right fixing plate, a motor and a skin taking roller are horizontally arranged between the left fixing plate and the right fixing plate, a transverse cutter is arranged at the inner lower part of the rear baffle, and two vertical cutters are slidably arranged between the upper connecting rod and the lower connecting rod in a penetrating manner; in conclusion, the invention can effectively cut the skin flap with the required shape, reduce the operation time and improve the working efficiency.
Description
Technical Field
The invention belongs to the technical field of medical treatment, and particularly relates to a dermatome capable of adjusting the shape of skin.
Background
A patient is treated by a common skin grafting method after skin damage or destruction caused by wounds, burns and other factors in order to restore functions (such as sensory function, sweating function) and appearance of the skin at the original damaged part, the skin grafting includes free skin grafting in which skin tissue is separately transplanted and grafting of a pedicle flap in which skin and subcutaneous tissue are simultaneously transplanted; whether the transplanted skin can survive or not depends on whether effective blood circulation is established between the transplanted skin and the skin tissue, and factors influencing the survival of the transplanted skin or the skin flap comprise wound infection, skin movement, torsion and compression of the pedicle of the skin tube or the skin flap, excessive fat of the skin tube and the like.
The skin flap can be divided into three types of surface layer (edge thickness), medium thickness and full thickness according to different thicknesses, wherein the medium thickness skin sheet has the widest application, the epidermis skin layer is the thinnest skin sheet and only comprises epidermis and a few dermal papilla, the thickness is 0.22-0.25mm, and the skin flap is generally only used for temporarily eliminating the wound surface or is adopted when a skin supply area for treating a burn patient with large area depth is very small; the thickness of the medium-thickness skin piece comprises epidermis and partial dermis, 2/3-3/4 which is equivalent to the thickness of the whole layer of skin is between about 0.3-0.8mm, the skin piece is easy to survive and is not limited by the nature and the size of a skin grafting area, the texture of the skin piece after survival is softer, particularly the part related to function or appearance is preferably the thicker medium-thickness skin piece; full thickness skin sheets comprise the entire layer of tissue of the skin, have low resistance to infection, and are not prone to survival.
The skin taking method comprises a skin cutting knife skin taking method and a mechanical skin taking method, wherein the skin cutting knife skin taking method is a manual skin taking method, when the skin is taken, a surgeon holds the knife with the right hand, holds the wood plate with the left hand and presses the skin supply area, stretches the skin with the wood plate towards the opposite direction with the other hand, holds the skin on the opposite side of the skin supply area tightly, then cuts the skin layer with the knife, and performs reciprocating saw action to cut off the required skin piece, wherein the thickness of the skin piece is determined according to the angle between the knife edge and the skin surface, and the larger the angle, the thicker the skin piece is; the mechanical skin taking method comprises a roller type skin cutter skin taking method and a drum type skin cutter skin taking method, the skin taking is smooth by the skin cutter, the thickness is uniform, the edge is neat, glue is firstly coated on the drum surface and the skin surface to stick the skin during skin cutting, the range of the skin taking method depends on the size of a required skin piece, an operator holds a handle by a left hand and holds a knife rest by a right hand to contact the front edge of the drum surface with a skin supplying area firstly, the drum surface is turned upwards after light pressure, the skin is stuck into a wrinkle shape at the moment, the knife is cut into the skin layer, the drum surface is turned upwards continuously, and the knife rest is pulled to cut the area with the required size.
The thickness of the slices is different due to skin taking by a manual method, the skin is not easy to grow after skin grafting, and the slicing speed is slow; the shape of the skin is not easy to change when the skin is taken mechanically, for example, the skin is cut into the regular shape by a roller type dermatome-taking method, so that the skin is fast and convenient, but the shape of the skin flap is generally judged according to the shape of the incision for skin grafting in clinic, so the shape of the skin flap is often irregular, and the skin flap with the irregular shape cannot be cut by the roller type dermatome-taking method which is commonly used in clinic, so the expected effect cannot be achieved when the roller type dermatome-taking method is used.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the dermatome with the adjustable dermatome shape.
In order to solve the technical problems, the invention adopts the following technical scheme: the skin cutter capable of adjusting the shape of the cut skin comprises a left fixing plate and a right fixing plate, wherein a rear baffle is connected between the rear edges of the left fixing plate and the right fixing plate, a lower connecting rod is connected between the front parts of the lower edges of the left fixing plate and the right fixing plate, an upper connecting rod is connected between the front parts of the upper edges of the left fixing plate and the right fixing plate, and the upper connecting rod and the lower connecting rod are arranged in an up-and-down alignment manner;
the upper parts of the left fixing plate and the right fixing plate are respectively provided with a handheld operation opening, the outer side wall of the right fixing plate is provided with a power supply connector, the inner side wall of the right fixing plate is fixedly provided with a motor along the left-right horizontal direction, the motor is provided with a power supply switch and a rotating speed adjusting knob, a motor shaft on the left side of the motor is horizontally connected with a rotating shaft, the left end of the rotating shaft is rotatably connected to the inner side wall of the left fixing plate, the rotating shaft is fixedly provided with a leather taking roller, and the lower side cutting plane of the leather taking roller is parallel and level to the lower edge of the left fixing plate;
the periphery of the leather roller is provided with a flap fixing groove along the axis direction, two ends of the bottom of the flap fixing groove are provided with slots, springs are fixed in the two slots, a U-shaped rod is arranged in the flap fixing groove, two ends of the U-shaped rod are inserted into the two slots respectively and are fixedly connected with the free end of each spring, the U-shaped rod is in top-pressing fit with the bottom of the flap fixing groove, and the lower side of the middle part of the U-shaped rod is hinged with a pull ring;
the rear baffle plate is characterized in that the lower part of the inner side wall of the rear baffle plate is provided with a crack in the left-right horizontal direction, a cavity is formed in the rear baffle plate, the crack is communicated with the cavity, a fixed shaft penetrates through the lower part in the cavity of the rear baffle plate in the left-right horizontal direction, the left end of the fixed shaft penetrates through a left fixed plate and is connected with a locking nut through threads, the right end of the fixed shaft penetrates through a right fixed plate and is connected with the locking nut through threads, screwing handles are fixed at two ends of the fixed shaft, a transverse cutter penetrates through the fixed shaft in the cavity, and a cutting edge of the transverse cutter penetrates out of the crack;
go up the connecting rod and seted up the slide, the glide slope has been seted up to the lower connecting rod, go up slide and glide slope and correspond the setting from top to bottom, go up the slide and all follow the horizontal direction of controlling with the glide slope inner wall and seted up the spout, go up the last slide of connecting rod in vertical two perpendicular cutters of wearing to be equipped with, every perpendicular cutter passes and inserts downwards behind the last connecting rod and establishes in the glide slope of lower connecting rod and wear out the glide slope, the cutting edge of erecting the cutter sets up forward, every top fixedly connected with who erects the cutter pushes away the handle, every upper portion of erecting the cutter all wears to be equipped with the correction slider, the correction slider slides and sets up in the spout of last slide, every lower part of erecting the cutter all wears to be equipped with.
The push handle is of a fan-shaped structure, and one end of a central angle of the push handle is arranged forwards.
The correcting slide block is of a square structure, the limiting slide block is of an ellipsoid-shaped structure, the correcting slide block is provided with a fan-shaped hole along the vertical direction, the inner walls corresponding to two radii of the fan-shaped hole are provided with elastic pieces, and the elastic pieces are in top pressure fit with the side wall of the vertical cutter.
An angle pointer is arranged on the screwing handle, angle scale marks are arranged on the outer side surfaces of the left fixing plate and the right fixing plate, and the angle scale marks are arranged at the arc positions corresponding to the pointer.
The inner side wall of the rear baffle is a slope inclined towards the rear upper part.
By adopting the technical scheme, the invention has the following beneficial effects: firstly, a medical worker marks out a required skin flap shape at a skin taking part of a patient, then selects a longer edge line to cut a skin flap port, fixes the skin flap port on a skin taking roller, inserts finger tips of two hands into handheld operation ports of a left fixing plate and a right fixing plate to hold the device, turns on a motor, pushes a push handle by a thumb to enable a vertical cutter to cut out the skin flap shape along the marking line, a transverse cutter cuts and separates the skin flap from subcutaneous tissues, and the medical worker pushes the device by the two hands to take the skin at the skin taking part of the patient; the skin flap fixing groove is formed in the skin taking roller, and the U-shaped rod is arranged in the skin flap fixing groove and can clamp the end opening of the skin flap to be cut into the skin flap fixing groove under the action of the pulling force of the spring, so that the skin taking roller can conveniently pull the skin flap to roll; the push handle is in a fan shape, so that when medical personnel cut the flap shape, the front end of the push handle rotates for a certain angle under the thrust of a thumb, and the blade of the vertical cutter also rotates for a certain angle in the fan-shaped hole of the correcting slide block, so that the direction of the cutting edge of the vertical cutter is changed, and the cutting trend of the vertical cutter is changed; the limiting slide block arranged at the lower part of the vertical cutter is of an ellipsoidal structure, so that the resistance of the limiting slide block during sliding can be reduced, and the steering of the cutting edge of the vertical cutter cannot be hindered; the angle pointer is arranged on the screwing handle, angle scale marks are arranged on the outer side surfaces of the left fixing plate and the right fixing plate and are arranged at the arc positions corresponding to the pointer, and the distance between the cutting edge of the cross cutter and the peeling roller can be visually adjusted, so that the peeling thickness is adjusted; the inside wall of backplate is the slope of slope to the back top, is convenient for take out the skin flap after the cutting.
In conclusion, the invention can effectively cut the skin flap with the required shape, reduce the operation time and improve the working efficiency.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a schematic view of the installation of a U-shaped rod on the peeling roller of the present invention;
FIG. 5 is a schematic view of the cross-cutter configuration of the present invention;
FIG. 6 is a schematic view of the vertical cutter installation of the present invention;
fig. 7 is a schematic view of the corrective slider structure of the present invention.
Detailed Description
As shown in fig. 1-7, the dermatome with the adjustable skin cutting shape comprises a left fixing plate 1 and a right fixing plate 2, wherein a rear baffle 3 is connected between the rear edges of the left fixing plate 1 and the right fixing plate 2, a lower connecting rod 4 is connected between the lower edge front parts of the left fixing plate 1 and the right fixing plate 2, an upper connecting rod 5 is connected between the upper edge front parts of the left fixing plate 1 and the right fixing plate 2, and the upper connecting rod 5 and the lower connecting rod 4 are arranged in an up-and-down alignment manner;
the upper parts of the left fixing plate 1 and the right fixing plate 2 are both provided with a handheld operation opening 6, the outer side wall of the right fixing plate 2 is provided with a power supply connector 7, the inner side wall of the right fixing plate 2 is fixedly provided with a motor 8 along the left-right horizontal direction, the motor 8 is provided with a power supply switch 9 and a rotating speed adjusting knob 10, a motor shaft on the left side of the motor 8 is horizontally connected with a rotating shaft 11, the left end of the rotating shaft 11 is rotatably connected to the inner side wall of the left fixing plate 1, a leather taking roller 12 is fixedly arranged on the rotating shaft 11, and the lower side tangent plane of the leather taking roller 12 is flush with the lower edge of the left fixing plate 1;
a flap fixing groove 13 is formed in the periphery of the leather roller 12 along the axis direction, slots 14 are formed in two end portions of the bottom of the flap fixing groove 13, springs 15 are fixed in the two slots 14, a U-shaped rod 16 is arranged in the flap fixing groove 13, two ends of the U-shaped rod 16 are inserted into the two slots 14 respectively and are fixedly connected with free ends of the springs 15, the U-shaped rod 16 is in top pressing fit with the bottom of the flap fixing groove 13, and a pull ring 17 is hinged to the lower side of the middle of the U-shaped rod 16;
the rear baffle 3 has a crack along the left and right horizontal direction at the lower part of the inner side wall, the rear baffle 3 has a cavity therein, the crack is communicated with the cavity, the fixed shaft 18 passes through the lower part of the cavity of the rear baffle 3 along the left and right horizontal direction, the left end of the fixed shaft 18 passes through the left fixed plate 1 and is connected with a locking nut 19 through a thread, the right end of the fixed shaft 18 passes through the right fixed plate 2 and is connected with the locking nut 19 through a thread, the two ends of the fixed shaft 18 are fixed with screwing handles 20, the fixed shaft 18 in the cavity is fixedly provided with a transverse cutter 21, and the cutting edge of the transverse cutter 21 passes through the crack;
go up connecting rod 5 and seted up last slide 22, glide slope 23 has been seted up to lower connecting rod 4, go up slide 22 and the setting of correspondence from top to bottom of glide slope 23, go up slide 22 and glide slope 23 inner wall and all seted up spout 24 along controlling the horizontal direction, go up two perpendicular cutters 25 of vertically wearing to be equipped with in the last slide 22 of connecting rod 5, every perpendicular cutter 25 passes and inserts down and establish in the glide slope 23 of connecting rod 4 down and wear out glide slope 23 after last connecting rod 5, the cutting edge of erecting cutter 25 sets up forward, every top fixedly connected with of erecting cutter 25 pushes away handle 26, correction slider 27 is all worn to be equipped with on every upper portion of erecting cutter 25, correction slider 27 slides and sets up in the spout 24 of last slide 22, spacing slider 28 is all worn to be equipped with in every lower part of erecting cutter 25, spacing slider 28 slides and sets up in the spout 24 of glide slope 23.
The push handle 26 is a fan-shaped structure, and one end of the central angle of the push handle 26 is arranged forward.
The correcting slide block 27 is of a square structure, the limiting slide block 28 is of an ellipsoid structure, the correcting slide block 27 is provided with a fan-shaped hole 29 along the vertical direction, the inner walls corresponding to two radiuses of the fan-shaped hole 29 are provided with elastic sheets 30, and the elastic sheets 30 are in top pressure fit with the side wall of the vertical cutter 25.
The screwing handle 20 is provided with an angle pointer 31, the outer side surfaces of the left fixing plate 1 and the right fixing plate 2 are provided with angle scale marks 32, and the angle scale marks 32 are arranged at the circular arc positions corresponding to the pointer.
The inner side wall of the tailgate 3 is a slope 33 inclined rearward and upward.
When the invention is used, a medical worker connects the device with a power supply, the medical worker can select a proper angle according to the required skin flap thickness by rotating the screwing handle 20 and observing the angle scale line 32 indicated by the pointer, then the distance between the transverse cutter 21 and the skin taking roller 12 is judged, the transverse cutter 21 is firmly fixed by screwing the locking nut 19, then the medical worker marks the shape line of the skin flap to be cut at the skin taking position on the body surface of the patient, then a longer edge is selected to cut a skin flap port, the pull ring 17 in the skin flap fixing groove 13 of the skin taking roller 12 is pulled out by tweezers, the pull ring 17 pulls the U-shaped rod 16 to pull out the U-shaped rod 16, then the skin flap port is respectively arranged in the crack between the U-shaped rod 16 and the skin taking roller 12, the U-shaped rod 16 is slowly released to clamp the skin flap port in the skin flap fixing groove 13, the pull ring 17 is rotated to completely arrange the pull ring 17 in the skin flap fixing groove 13, comparing the shape lines of the skin flap to be cut, adjusting the initial positions of two vertical cutters 25, flatly placing the device at the skin-taking part of a patient, inserting finger tips of two hands of a medical worker into the handheld operation openings 6 of the left fixing plate 1 and the right fixing plate 2, placing a thumb on the push handle 26, holding the device for operation, adjusting the rotating speed of the motor 8, turning on a switch of the motor 8, slowly pushing the whole device, pushing the push handle 26 to move by the thumb according to the shape of the skin flap to be cut during the period, pushing the push handle 26 to move, and simultaneously pushing the front end of the push handle 26 to enable the vertical cutters 25 to rotate for a certain angle so as to change the orientation of the cutting edges of the vertical cutters 25, so that the cutting trend of the vertical cutters 25 can be changed, and the cut skin flap can be taken out after the skin is taken; when the vertical cutter 25 cuts along a straight line, the elastic sheet 30 in the rectification slide block 27 applies a certain force to the vertical cutter 25 to keep the vertical cutter 25 at the initial position.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (3)
1. Skin cutter of adjustable skin shape of cutting, its characterized in that: the rear baffle plate is connected between the rear edges of the left fixing plate and the right fixing plate, the lower connecting rod is connected between the front parts of the lower edges of the left fixing plate and the right fixing plate, the upper connecting rod is connected between the front parts of the upper edges of the left fixing plate and the right fixing plate, and the upper connecting rod and the lower connecting rod are arranged in an up-and-down alignment manner;
the upper parts of the left fixing plate and the right fixing plate are respectively provided with a handheld operation opening, the outer side wall of the right fixing plate is provided with a power supply connector, the inner side wall of the right fixing plate is fixedly provided with a motor along the left-right horizontal direction, the motor is provided with a power supply switch and a rotating speed adjusting knob, a motor shaft on the left side of the motor is horizontally connected with a rotating shaft, the left end of the rotating shaft is rotatably connected to the inner side wall of the left fixing plate, the rotating shaft is fixedly provided with a leather taking roller, and the lower side cutting plane of the leather taking roller is parallel and level to the lower edge of the left fixing plate;
the periphery of the leather roller is provided with a flap fixing groove along the axis direction, two ends of the bottom of the flap fixing groove are provided with slots, springs are fixed in the two slots, a U-shaped rod is arranged in the flap fixing groove, two ends of the U-shaped rod are inserted into the two slots respectively and are fixedly connected with the free end of each spring, the U-shaped rod is in top pressure fit with the bottom of the flap fixing groove, and the lower side of the middle part of the U-shaped rod is hinged with a pull ring;
the rear baffle plate is characterized in that the lower part of the inner side wall of the rear baffle plate is provided with a crack in the left-right horizontal direction, a cavity is formed in the rear baffle plate, the crack is communicated with the cavity, a fixed shaft penetrates through the lower part in the cavity of the rear baffle plate in the left-right horizontal direction, the left end of the fixed shaft penetrates through a left fixed plate and is connected with a locking nut through threads, the right end of the fixed shaft penetrates through a right fixed plate and is connected with the locking nut through threads, screwing handles are fixed at two ends of the fixed shaft, a;
the upper connecting rod is provided with an upper slide way, the lower connecting rod is provided with a lower slide way, the upper slide way and the lower slide way are arranged in a vertically corresponding mode, the inner walls of the upper slide way and the lower slide way are provided with slide grooves along the left horizontal direction and the right horizontal direction, two vertical cutters vertically penetrate through the upper slide way of the upper connecting rod, each vertical cutter penetrates through the upper connecting rod and then is inserted into the lower slide way of the lower connecting rod and penetrates out of the lower slide way, the cutting edge of each vertical cutter is arranged forwards, the top end of each vertical cutter is fixedly connected with a push handle, the upper part of each vertical cutter penetrates through a correction slide block, the correction slide block is arranged in the slide groove of the upper slide way in a sliding mode, the lower part of each vertical cutter penetrates through a limit slide block, and the limit slide block is arranged in the slide groove of the lower slide way in a sliding mode;
the push handle is of a fan-shaped structure, and one end of a central angle of the push handle is arranged forwards;
the correcting slide block is of a square structure, the limiting slide block is of an ellipsoid-shaped structure, the correcting slide block is provided with a fan-shaped hole along the vertical direction, the inner walls corresponding to two radii of the fan-shaped hole are provided with elastic pieces, and the elastic pieces are in top pressure fit with the side wall of the vertical cutter.
2. The adjustable dermatome of claim 1, wherein: the rotating handle is provided with an angle pointer, the outer side surfaces of the left fixing plate and the right fixing plate are provided with angle scale marks, and the angle scale marks are arranged at the arc positions corresponding to the pointer.
3. The adjustable dermatome of claim 1, wherein: the inner side wall of the rear baffle is a slope inclined towards the rear upper part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675441.4A CN110353772B (en) | 2019-07-25 | 2019-07-25 | Skin cutter capable of adjusting skin cutting shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675441.4A CN110353772B (en) | 2019-07-25 | 2019-07-25 | Skin cutter capable of adjusting skin cutting shape |
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| Publication Number | Publication Date |
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| CN110353772A CN110353772A (en) | 2019-10-22 |
| CN110353772B true CN110353772B (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910675441.4A Active CN110353772B (en) | 2019-07-25 | 2019-07-25 | Skin cutter capable of adjusting skin cutting shape |
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| CN (1) | CN110353772B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112120760B (en) * | 2020-09-24 | 2022-01-18 | 青岛市城阳区人民医院 | Roller skin taking cutter suitable for burn department |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7666192B2 (en) * | 2001-02-16 | 2010-02-23 | Kci Licensing, Inc. | Skin grafting devices and methods |
| CN203598016U (en) * | 2013-11-19 | 2014-05-21 | 杨学慧 | Roll shaft skin cutting device for general surgery department |
| US20170296214A1 (en) * | 2013-12-06 | 2017-10-19 | Edward KNOWLTON | Pixel array medical systems, devices and methods |
| US20180078273A1 (en) * | 2015-04-24 | 2018-03-22 | The Regents Of The University Of Colorado, A Body Corporate | Optical dermatome depth gauge |
| CN105662596A (en) * | 2016-03-24 | 2016-06-15 | 张英泽 | Free skin strutting and fetching auxiliary device |
| CN206690159U (en) * | 2017-05-17 | 2017-12-01 | 四川省犍为凤生纸业有限责任公司 | A kind of bamboo paper automatic cutting device |
| CN107553547A (en) * | 2017-11-10 | 2018-01-09 | 熊训祥 | A kind of cutter device being used in food machinery |
| CN209091545U (en) * | 2018-07-18 | 2019-07-12 | 上海杏诚医疗科技有限公司 | Costal cartilage cutter |
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2019
- 2019-07-25 CN CN201910675441.4A patent/CN110353772B/en active Active
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