Skin grafting device for deep wound treatment

Abstract

The utility model relates to the technical field of medical instruments, and discloses a skin grafting device for deep wound treatment, which comprises a first pincer body and a second pincer body which are hinged, the first pincer body and the second pincer body have the same structure, each of the first pincer body and the second pincer body comprises a pincer head and a pincer handle, the pincer heads partially extend downwards to form pincer mouths, and the pincer mouths are connected with the pincer handles. The outer side walls of the pincer mouths are conical surfaces, the cross sections of the pincer mouths are sequentially reduced in the direction, away from the pincer head, of the pincer mouths, conical grooves are formed in the inner side walls of the pincer mouths, the first pincer body and the second pincer body rotate relatively till the two pincer mouths are attached, and the two conical grooves are matched to form a positioning hole used for planting a skin column; holding parts are arranged at the ends, away from the forceps mouths, of the forceps handles, and reserved holes for grasping are formed in the holding parts. The utility model has the beneficial effects that the three-dimensional implant can be applied to a three-dimensional implant operation, and is convenient for realizing skin column transplantation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a skin grafting device for treating deep wounds. Background Art

[0002] At present, deep wounds refer to wounds of degree II or above or full-thickness skin defects, which are common in burns, trauma, pressure sores, etc. Due to the massive necrosis of the epidermis and dermal appendages, the wound loses the basis for healing and often requires skin grafting repair; eschar excision and skin grafting is a commonly used surgery, in which a large piece of skin is taken out for transplantation through excision of the entire eschar. Simple blade-thick skin grafts have a low content of dermal components, severe scar hyperplasia and contracture, and poor long-term effects. Medium-thick or full-thick skin grafts have good elasticity and small color difference after survival; but at the same time, there are also problems such as slow blood supply, poor drainage, and easy infection, which lead to surgical failure and cause great damage to the donor area.

[0003] Artificial dermis is a tissue-engineered dermis substitute that provides a new option for repairing skin defect wounds. Currently, the use of artificial dermis generally includes two steps: the first stage is artificial dermis transplantation for 2-3 weeks; the second stage is autologous split-thickness skin transplantation. Traditional flat transplantation has problems such as long time and high cost. In the past, when performing skin harvesting, skin transplantation and burn scab removal operations, it was necessary to use a skin harvesting knife to perform split-thickness skin harvesting, and then stick the split-thickness skin graft to the wound surface, which was prone to skin necrosis; contracture and deformation; scar hyperplasia; and the absence of sweat glands and sebaceous glands.

[0004] To solve the above problems, a new skin grafting method has been developed. Three-dimensional implantation is different from the previous planar transplantation. The dot-matrix implantation provides "seeds" to the wound surface, and healing is achieved through the gradual three-dimensional expansion and fusion of the skin column, which effectively improves the survival of the micro-skin column, reduces the damage to the donor area, and avoids the waste of skin resources. After the three-dimensional expansion and healing of the micro-skin column, the secretion function of some sweat glands and sebaceous glands can be restored, the skin desquamation and dryness can be reduced, and relative moisture can be maintained, the quality of the skin after healing can be improved, and the occurrence of residual wound surface can be reduced. There is no skin grafting device suitable for the transplantation of skin columns in three-dimensional implantation in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a skin grafting device for treating deep wounds, which can be applied to three-dimensional implantation surgery and is convenient for realizing skin column transplantation.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a skin grafting device for treating deep wounds, comprising a hinged first clamp body and a second clamp body, the first clamp body and the second clamp body have the same structure, the first clamp body and the second clamp body both include a clamp head and a clamp handle, the clamp head partially extends downward to form a clamp mouth, the outer wall of the clamp mouth is a conical surface, the cross-section of the clamp mouth gradually decreases along the direction of the clamp mouth away from the clamp head, the inner wall of the clamp mouth is provided with a conical groove, the first clamp body and the second clamp body are relatively rotated until the two clamp mouths are in contact, and the two conical grooves cooperate to form a positioning hole for implanting a skin column; a gripping portion is provided at one end of the clamp handle away from the clamp mouth, and a reserved hole for grasping is provided on the gripping portion.

[0007] Furthermore, the inner side walls of the first clamp body and the second clamp body are staggeredly provided with clamping parts, and the surfaces facing each other of the two clamping parts are provided with tooth grooves for engagement and limiting.

[0008] Furthermore, the clamping portion is arranged at one end of the pliers handle close to the gripping portion.

[0009] Furthermore, the first pliers body is provided with a first hinged portion, the second pliers body is provided with a second hinged portion, and the first hinged portion and the second hinged portion are hingedly connected by a pin.

[0010] Furthermore, the angle between the first pliers body and the second pliers body is less than 90°.

[0011] Furthermore, the pliers handle includes a first rod body and a second rod body, one end of the first rod body is connected to the pliers head, and the other end is inserted into the second rod body, the other end of the second rod body is connected to the gripping part, and the first rod body and the second rod body are evenly distributed with assembly holes in the vertical direction for adjusting the insertion depth of the first rod body in the second rod body.

[0012] Furthermore, the inner wall of the second rod body is provided with reinforcing ribs.

[0013] Furthermore, the inner wall of the reserved hole is evenly distributed with anti-slip grooves in a circular shape.

[0014] Furthermore, the second hinged portion is provided with a slot for limiting the rotation of the first hinged portion.

[0015] Furthermore, the pliers head and the pliers handle are integrally formed.

[0016] Compared with the prior art, the skin grafting device for treating deep wounds according to the embodiment of the utility model has the following beneficial effects: the first pliers body and the second pliers body have the same structure and are hinged, and the overall structure of the skin grafting device is simple. The first pliers body and the second pliers body both include a pliers head and a pliers handle. The pliers head partially extends downward to form a pliers mouth. The outer wall of the pliers mouth is a conical surface. The cross-section of the pliers mouth gradually decreases along the direction in which the pliers mouth is away from the pliers head, and can be directly inserted into the base of the wound to form a skin pit. A conical groove is provided on the inner wall of the pliers mouth. The first pliers body and the second pliers body are relatively rotated until the two pliers mouths are in contact. The two conical grooves cooperate to form a positioning hole for implanting a skin column. The skin column is guided into the skin pit along the positioning hole, which can effectively improve the efficiency of skin column implantation and reduce the operation time. A gripping portion is provided at the end of the pliers handle away from the pliers mouth. A reserved hole for grasping is provided on the gripping portion to facilitate the use and operation of the skin grafting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a skin grafting device for deep wound treatment according to an embodiment of the utility model;

[0018] Figure 2 This is an exploded view of the parts of the skin graft for deep wound treatment according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic structural diagram of the clamp handle of the skin grafting device for treating deep wounds according to an embodiment of the utility model.

[0020] In the figure, 1 is the first pliers body; 11 is the first hinged part; 2 is the second pliers body; 21 is the second hinged part; 211 is the slot; 3 is the pliers head; 4 is the pliers handle; 41 is the first rod body; 42 is the second rod body; 43 is the assembly hole; 5 is the gripping part; 51 is the reserved hole; 6 is the pliers mouth; 61 is the conical slot; 7 is the positioning hole; 8 is the clamping part; 81 is the tooth groove; 9 is the pin. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. used in the present invention to indicate the orientation or positional relationship are based on the positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices and elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0024] like Figure 1 As shown, a skin grafting device for deep wound treatment in a preferred embodiment of the utility model is used to form a skin pit at the base of the wound, and can introduce a micro skin column into the skin pit to achieve three-dimensional skin column planting on the wound. It includes a hinged first clamp body 1 and a second clamp body 2. In order to simplify the overall structure of the skin grafting device, the first clamp body 1 and the second clamp body 2 have the same structure. Specifically, the first clamp body 1 and the second clamp body 2 both include a clamp head 3 and a clamp handle 4. In order to facilitate the formation of a skin pit at the base of the wound, as shown in FIG. Figure 2 As shown, the pliers head 3 partially extends downward to form a pliers mouth 6, the outer side wall of the pliers mouth 6 is a conical surface, and the cross-section of the pliers mouth 6 gradually decreases in the direction of the pliers mouth 6 away from the pliers head 3, which can facilitate the insertion of the pliers mouth 6 into the base of the wound surface to form a skin pit. In order to facilitate the introduction of the micro-skin column into the skin pit, a conical groove 61 is provided on the inner side wall of the pliers mouth 6, and the first pliers body 1 and the second pliers body 2 are relatively rotated until the two pliers mouths 6 are in contact, and the two conical grooves 61 cooperate to form a positioning hole 7 for implanting the skin column, which can realize the rapid positioning and implantation of the skin column and reduce the operation time. In order to facilitate the holding operation of the skin grafter, a gripping portion 5 is provided at the end of the pliers handle 4 away from the pliers mouth 6, and a reserved hole 51 for grasping is provided on the gripping portion 5. When in use, the thumb and index finger are respectively inserted into the two reserved holes 51 to drive the first pliers body 1 and the second pliers body 2 to open and close.

[0025] Furthermore, in order to facilitate the use, the two pliers 6 are fitted and fixed. Figure 1 As shown, the inner side walls of the first pliers body 1 and the second pliers body 2 are staggered with a clamping portion 8, and the surfaces opposite to each other of the two clamping portions 8 are provided with tooth grooves 81 for engagement and limiting. That is, when the two pliers mouths 6 need to be attached and fixed, the tooth grooves 81 on the two clamping portions 8 are engaged to achieve mechanical limiting, avoid the size of the positioning hole 7 from changing, and facilitate the transplantation of the skin column. Furthermore, in order to improve the fixing effect of the clamping portion 8, the clamping portion 8 is arranged at one end of the pliers handle 4 close to the gripping portion 5.

[0026] In some embodiments, in order to realize the hinge connection between the first clamp body 1 and the second clamp body 2, as shown in FIG. Figure 2As shown, the first pliers body 1 is provided with a first hinged portion 11, and the second pliers body 2 is provided with a second hinged portion 21. The first hinged portion 11 and the second hinged portion 21 are hinged by a pin 9, and the angle between the first pliers body 1 and the second pliers body 2 is less than 90°. In order to facilitate limiting the size of the angle, a slot 211 for limiting the rotation of the first hinged portion 11 is provided on the second hinged portion 21. Furthermore, in some embodiments, in order to simplify the structure of the pliers head 3 and the pliers handle 4 and enhance the stability between the pliers head 3 and the pliers handle 4, the pliers head 3 and the pliers handle 4 are both integrally formed of stainless steel.

[0027] In some embodiments, in order to facilitate the adjustment of the overall length of the skin graft device, so as to facilitate the application of different skin grafting scenarios, such as Figure 3 As shown, specifically, the pliers handle 4 includes a first rod body 41 and a second rod body 42, one end of the first rod body 41 is connected to the pliers head 3, and the other end is inserted into the second rod body 42, and the other end of the second rod body 42 is connected to the gripping portion 5, that is, the first rod body 41 is a rod body, and the second rod body 42 is a hollow rod body. One end of the first rod body 41 is inserted into the second rod body 42. In order to facilitate the adjustment of the insertion depth of the first rod body 41 in the second rod body 42, so as to adjust the overall length of the skin grafting device, the first rod body 41 and the second rod body 42 are evenly distributed with assembly holes 43 in the vertical direction. After being adjusted to a suitable length, the first rod body 41 and the second rod body 42 are fixed by inserting a positioning member into the assembly hole 43. The positioning member can be a positioning pin or a screw, which is correspondingly arranged according to the assembly hole 43. Further, in order to improve the structural strength of the second rod body 42, reinforcing ribs are provided on the inner wall of the second rod body 42, thereby improving the overall structural strength of the pliers handle 4, and the reinforcing ribs are cross-shaped or cross-arranged.

[0028] In some embodiments, in order to increase the friction between the reserved hole and the finger and avoid slipping when using the skin grafter, anti-slip grooves are evenly distributed in a ring shape on the inner wall of the reserved hole.

[0029] Artificial dermis transplantation is combined with autologous micro-skin column lattice implantation, "seeds" are provided to the wound surface through lattice implantation, and healing is achieved through the gradual three-dimensional expansion and fusion of the skin column; the working process of the utility model is: first, holes are made in a lattice with a hole spacing of 5mm on the clean wound surface through the forceps mouth 6 to form a deep columnar skin pit with blood supply, and then the skin around the wound is used as the skin donor area to prepare a micro-skin column with a diameter of 1-2mm and fat and implant it in the skin pit, and then covered with artificial dermis, which is conducive to the formation of a scaffold-new capillary-cell complex around the skin pit, and promotes the three-dimensional and lattice skin source implantation of the skin column on the entire wound surface.

[0030] In summary, the embodiment of the utility model provides a skin grafting device for treating deep wounds, wherein the first pliers body 1 and the second pliers body 2 have the same structure and are hinged, and the overall structure of the skin grafting device is simple. The first pliers body 1 and the second pliers body 2 both include a pliers head 3 and a pliers handle 4, and the end of the pliers handle 4 away from the pliers mouth 6 is provided with a gripping portion 5, and a reserved hole 51 for grasping is provided on the gripping portion 5, which is convenient for the use and operation of the skin grafting device. The pliers head 3 partially extends downward to form a pliers mouth 6, and the outer wall of the pliers mouth 6 is a conical surface. The cross-section of the pliers mouth 6 is successively reduced along the direction in which the pliers mouth 6 is away from the pliers head 3, and can be directly inserted into the base of the wound to form a skin pit. The inner wall of the pliers mouth 6 is provided with a conical groove 61, and the first pliers body 1 and the second pliers body 2 are relatively rotated until the two pliers mouths 6 are in contact, and the two conical grooves 61 cooperate to form a positioning hole 7 for planting a skin column, and the skin column is introduced into the skin pit along the positioning hole 7, which can effectively improve the efficiency of skin column planting and reduce the operation time.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A skin grafting device for treating deep wounds, characterized in that: It comprises a first pliers body and a second pliers body which are hinged, the first pliers body and the second pliers body have the same structure, both the first pliers body and the second pliers body comprise a pliers head and a pliers handle, the pliers head partially extends downward to form a pliers mouth, the outer wall of the pliers mouth is a conical surface, the cross section of the pliers mouth gradually decreases along the direction in which the pliers mouth is away from the pliers head, the inner wall of the pliers mouth is provided with a conical groove, the first pliers body and the second pliers body are relatively rotated until the two pliers mouths are in contact with each other, and the two conical grooves cooperate to form a positioning hole for implanting a skin column; a gripping portion is provided at one end of the pliers handle away from the pliers mouth, and a reserved hole for grasping is provided on the gripping portion.

2. The skin grafting device for deep wound treatment according to claim 1, characterized in that: The inner side walls of the first clamp body and the second clamp body are staggeredly provided with clamping parts, and the surfaces opposite to each other of the two clamping parts are provided with tooth grooves for engagement and limiting.

3. The skin grafting device for treating deep wounds as claimed in claim 2, characterized in that: The clamping portion is disposed at one end of the clamp handle close to the holding portion.

4. The skin grafting device for treating deep wounds according to claim 1, characterized in that: The first pliers body is provided with a first hinged portion, the second pliers body is provided with a second hinged portion, and the first hinged portion and the second hinged portion are hingedly connected by a pin.

5. The skin grafting device for treating deep wounds according to claim 1, characterized in that: An angle between the first pliers body and the second pliers body is less than 90°.

6. The skin grafting device for treating deep wounds according to claim 1, characterized in that: The pliers handle includes a first rod body and a second rod body, one end of the first rod body is connected to the pliers head, and the other end is inserted into the second rod body, the other end of the second rod body is connected to the gripping portion, and the first rod body and the second rod body are evenly distributed with assembly holes in the vertical direction for adjusting the insertion depth of the first rod body in the second rod body.

7. The skin grafting device for treating deep wounds according to claim 6, characterized in that: The inner wall of the second rod body is provided with reinforcing ribs.

8. The skin grafting device for treating deep wounds according to claim 1, characterized in that: The inner wall of the reserved hole is evenly distributed with anti-slip grooves in an annular shape.

9. The skin grafting device for treating deep wounds according to claim 4, characterized in that: The second hinged portion is provided with a slot for limiting the rotation of the first hinged portion.

10. The skin grafting device for treating deep wounds according to claim 1, characterized in that: The pliers head and the pliers handle are integrally formed.

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