Apparatus for adjusting thickness of acellular dermal matrix, capable of fine adjustment and planarization

Abstract

The present invention relates to an apparatus for adjusting the thickness of an acellular dermal matrix, the apparatus being capable of fine adjustment and planarization, and comprising: a main body part; a first support part located in front of the main body part; a second support part which is located in front of the main body part and is adjacent to and located in front of the first support part; a pair of roller parts which each extend in the width direction and which rotate in opposite directions in conjunction with the first support part and the second support part; and a cutter part located between the pair of roller parts. The acellular dermal matrix is inserted between the pair of roller parts, descends vertically due to the rotation of the pair of roller parts, and at the same time, comes into contact with the cutter part and is cut.

Description

A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening

[0001] The present invention relates to a cutting device that can flatten the dermis to increase uniformity and finely control the thickness of the dermis in order to improve the angiogenesis effect and survival rate following transplantation of acellular allograft dermis.

[0002] Acellular dermal allograft is a product made from cadaveric skin donated from a donor. It preserves the three-dimensional structure of the dermal layer, retaining various structural proteins and components, while selectively removing only cellular antigens that trigger immune responses. This acellular dermal allograft possesses three key characteristics: extremely low antigenicity, rapid angiogenesis, and stability as a dermal layer. Therefore, it is used to treat areas with severe skin tissue loss due to burns, trauma, or other diseases.

[0003] Acellular dermal allografts are transplanted onto skin defects. They act as a scaffold, forming a new dermis with fibroblasts and blood vessels growing from the patient's wound bed into a three-dimensional network structure. This not only reduces scarring but also creates an immediate physiological wound closure, preventing external infection. Furthermore, the basement membrane between the dermis and epidermis is preserved, promoting epidermal regeneration and engraftment. Furthermore, rapid formation of new dermal tissue allows for simultaneous skin grafting with the patient's own skin, shortening hospital stays and improving quality of life. However, these properties are largely determined by the final composition of the acellular allograft, which can vary depending on how the donated cadaveric skin is handled and processed.

[0004] Figure 10 schematically illustrates the extraction of dermis from cadaver skin. First, dermis is extracted from cadaver skin, which consists of the epidermis, dermis, and subcutaneous fat. The extracted dermis typically has an uneven surface and thickness, as indicated by reference symbol "A." When dermis is transplanted onto a wound surface in this condition, there is a problem of site-specific variation, resulting in reduced angiogenesis.

[0005] To solve these problems, a cutting process is performed to secondary process the dermis (1), but since it is mainly performed manually, there is still the problem of uneven surface and thickness.

[0006] In addition, although the angiogenic effect can be increased only when the thickness of the dermis (1) is precisely set in a customized manner according to the condition of the wound surface, there is currently no technology that can precisely control the thickness of acellular allograft dermis.

[0007] Accordingly, in the present invention, in order to improve the angiogenesis effect and survival rate following transplantation of acellular allograft dermis, a cutting device was developed that flattens the dermis to increase uniformity and can finely control the thickness of the dermis.

[0008] [Prior Art Literature]

[0009] Republic of Korea Patent Publication No. 10-2020-0120470

[0010] The present invention relates to a cutting device that can flatten the dermis to increase uniformity and finely control the thickness of the dermis in order to improve the angiogenesis effect and survival rate following transplantation of acellular allograft dermis.

[0011] The device for adjusting the thickness of an acellular allograft dermis capable of fine adjustment and flattening according to the present invention comprises: a main body; a first support part located on the front side of the main body part; a second support part located on the front side of the main body part, adjacent to the first support part and located on the front side of the first support part; a pair of roller parts that rotate in opposite directions while being linked to the first support part and the second support part, each roller part extending in the width direction; and a cutter part located between the pair of roller parts; wherein an acellular allograft dermis is inserted between the pair of roller parts, and the acellular allograft dermis is lowered in the vertical direction due to the rotation of the pair of roller parts, and at the same time, the acellular allograft dermis is cut by coming into contact with the cutter part.

[0012] In addition, the cutter part of the thickness control device for acellular allograft dermis capable of fine adjustment and flattening according to the present invention is linked to a first driving part that reciprocates in the width direction and reciprocates in the width direction.

[0013] In addition, the first driving unit of the thickness control device of the acellular allograft dermis capable of fine adjustment and flattening according to the present invention includes a bracket unit that is formed on the main body unit and is fastened to a rail that extends in the width direction and moves in the width direction along the rail; a first panel unit that is coupled to a vertical upper portion of the bracket unit; a guide rail unit that is formed on a vertical upper portion of the first panel unit and extends in the length direction; and a second panel unit that is fastened to the guide rail unit and moves in the length direction along the guide rail unit.

[0014] In addition, the cutter part is coupled to the front of the second panel part of the thickness control device for acellular allograft dermis capable of fine adjustment and flattening according to the present invention, and due to the longitudinal movement of the second panel part, the cutter part can also move in the longitudinal direction, thereby controlling the cutting thickness of the acellular allograft dermis descending in the vertical direction.

[0015] In addition, the bracket part of the thickness control device of the acellular allograft dermis capable of fine adjustment and flattening according to the present invention is coupled to a second driving part, and the second driving part includes a driving motor; a driving crank that receives rotational force from the driving motor and converts it into a reciprocating linear motion in the width direction, and is coupled to the bracket part.

[0016] In addition, the cutter part of the thickness control device of the acellular allograft dermis capable of fine adjustment and flattening according to the present invention includes a pair of cutter frames that are adjacent in the length direction and each extends in the width direction; and a blade that is positioned between the pair of cutter frames and extends in the width direction.

[0017] In addition, the pair of cutter frames of the thickness control device of the acellular allograft dermis capable of fine adjustment and flattening according to the present invention are symmetrical with respect to the blade.

[0018] According to the present invention, in order to improve the angiogenesis effect and survival rate following transplantation of acellular allograft dermis, the dermis is flattened to increase uniformity, and the thickness of the dermis can be finely controlled.

[0019] Figure 1 is a perspective view showing the entire thickness control device of an acellular allograft dermis according to the present invention.

[0020] Figure 2 is an enlarged view of one side of a thickness control device for acellular allograft dermis according to the present invention.

[0021] FIG. 3 illustrates a view of the device according to the present invention as viewed from the opposite side in the width direction of FIG. 2.

[0022] Figures 4 and 5 illustrate the coupling relationship between the first driving part and the second driving part of the acellular allograft dermis according to the present invention.

[0023] Figure 6 is an enlarged view of the cutter section of the acellular allograft dermis according to the present invention.

[0024] Figure 7 is an enlarged view of the cutter control part of the acellular allograft dermis according to the present invention.

[0025] Figure 8 is an enlarged view of the cutter position fixing device of the acellular allograft dermis according to the present invention.

[0026] Figure 9 illustrates the configuration of a roller control unit of an acellular allograft dermis according to the present invention.

[0027] Figure 10 briefly summarizes the process of extracting dermis from cadaver skin.

[0028] The present invention relates to a device for controlling the thickness of an acellular allograft, which is capable of fine adjustment and flattening, comprising: a main body; a first support part positioned on the front side of the main body part; a second support part positioned on the front side of the main body part, adjacent to the first support part and positioned on the front side of the first support part; a pair of roller parts that rotate in opposite directions while being linked to the first support part and the second support part, and each roller part extending in the width direction; and a cutter part positioned between the pair of roller parts; wherein an acellular allograft is inserted between the pair of roller parts, and the acellular allograft is lowered in the vertical direction due to the rotation of the pair of roller parts, and at the same time, the acellular allograft is cut by coming into contact with the cutter part.

[0029] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings.

[0030] Fig. 1 is a perspective view illustrating the entire thickness control device of an acellular allograft dermis according to the present invention. The thickness control device of an acellular allograft dermis according to the present invention includes a main body (100), a power unit (200), a first support unit (300), a second support unit (400), a first driving unit (500), a cutter unit (600), a roller unit (700), a second driving unit (800), a roller control unit (900), and a cutter control unit (1000).

[0031]

[0032] The main body (100) is a base or frame that connects the components of the present invention, and a power unit (200) is formed at a lower point of the main body (100).

[0033] The power unit (200) includes a power motor (210) and a power motor wheel (220). The rotational power transmitted from the power motor (210) is transmitted to the power motor wheel (220), which is linked to the first support unit (300) and the second support unit (400), which will be described later. This will be described in detail later.

[0034] The first support (300) is located at the front of the main body (100) and at the front of the power unit (200). The first support (300) includes a first-first wheel (310), a first support (320), a first shaft (330), a first gear (340), a first-second wheel (350), and a first-third wheel (360).

[0035] In addition, the second support (400) is preferably positioned on the front of the main body (100), on the front of the power unit (200), and at the same time adjacent to the front of the first support (300). The second support (400) includes a support shaft (410), a second support member (420), a second shaft (430), a second gear (440), a second-second wheel (450), and a second-third wheel (460).

[0036]

[0037] Figure 2 is an enlarged view of one side of a thickness control device for acellular allograft dermis according to the present invention. The bonding relationship will be explained with reference to this.

[0038] First, the power motor wheel (220) is connected to transmit rotational power through the first-1 wheel (310) and the first belt (10). That is, the power motor wheel (220) and the first-1 wheel (310) are installed so that the first belt (10) wraps around them simultaneously.

[0039] Next, the 1-1 wheel (310) is coupled with the first gear (340) in the width direction, and the first gear (340) is coupled with the first shaft (330) in the width direction. Through this, the rotational power transmitted through the 1-1 wheel (310) is transmitted to the first gear (340) and the first shaft (330), and through this, the first gear (340) and the first shaft (330) rotate along the rotational direction (assumed to be one direction) of the 1-1 wheel (310).

[0040] A first support (320) is positioned between the first wheel (310) and the first gear (340). The first support (320) is formed to extend in a vertical direction, and each component of the first support part (300) is supported by being coupled or connected to the first support (320).

[0041]

[0042] The first gear (340) is engaged with the second gear (410). Accordingly, the first gear (340) and the second gear (410) are positioned on the same line in the longitudinal direction. In addition, a support shaft (410) is coupled in the width direction of the second gear (410), and the support shaft (410) is supported by being coupled or connected to a second support (420) that is formed to extend in the vertical direction. In addition, a second shaft (430) is coupled in the width direction of the second gear (410), and the second shaft (430) is formed to extend in the width direction. At this time, it is preferable that the first shaft (330) and the second shaft (430) are spaced apart from each other by a predetermined distance in the longitudinal direction and are parallel.

[0043] Due to the structure as described above, the rotational power transmitted to the first gear (340) is transmitted to the second gear (440), and the rotational power transmitted to the second gear (440) is transmitted to the second shaft (430). At this time, since the first gear (340) and the second gear (440) are meshed, when the first gear (340) rotates in one direction, the second gear (440) rotates in the other direction opposite to the first gear (340), and the rotational direction of the second gear (440) and the rotational direction of the second shaft (430) become the same.

[0044]

[0045] Next, refer to Fig. 3. Fig. 3 illustrates a view of the device according to the present invention as viewed from the opposite side in the width direction of Fig. 2.

[0046] The first shaft (330) is coupled to the first-second wheel (350). At this time, a first support (320) is positioned between the first shaft (330) and the first-second wheel (350), and serves to support each component. The first-second wheel (350) receives the rotational power of the first shaft (330), and thus rotates in one direction in the same direction as the first shaft (330).

[0047] At the same time, the 1-3 wheel (360) is coupled to the vertical upper portion of the 1st support (320). In addition, the 1-2 wheel (350) and the 1-3 wheel (360) are connected by the second belt (20). That is, the second belt (20) simultaneously wraps the 1-2 wheel (350) and the 1-3 wheel (360). Therefore, the rotational power transmitted to the 1-2 wheel (350) is transmitted to the 1-3 wheel (360) by the second belt (20). At this time, the rotational direction (one direction) of the 1-2 wheel (350) and the rotational direction of the 1-3 wheel (360) are the same.

[0048] A roller unit (700) is positioned between a pair of first supports (320) spaced apart in the width direction. More specifically, the roller unit (700) includes a first roller unit (710) and a second roller unit (720) as a pair. For example, it is preferable that the first roller unit (710) is positioned between the pair of first supports (320). At this time, the 1-3 wheel (360) is coupled with the first roller unit (710). Referring to FIG. 6, more specifically, the 1-3 wheel (360) is coupled with the 1-3 wheel axle (711), which is the central axis of the first roller unit (710). It is preferable that the first roller unit (710) has a columnar shape that extends in the width direction. Accordingly, the rotational power of the 1-3 wheel (360) is ultimately transmitted to the 1st roller unit (710), and the rotational direction (one direction) of the 1-3 wheel (360) and the rotational direction of the 1st roller unit (710) become the same.

[0049]

[0050] The second shaft (430) is coupled to the second-second wheel (450). At this time, a second support (420) is positioned between the second shaft (430) and the second-second wheel (450), and serves to support each component. The second-second wheel (450) receives the rotational power of the second shaft (430), and accordingly, rotates in the same direction as the second shaft (430) but in a different direction.

[0051] At the same time, the 2-3 wheel (460) is coupled to the upper vertical portion of the 2nd support (420). In addition, the 2-2 wheel (450) and the 2-3 wheel (460) are connected by the 3rd belt (30). That is, the 3rd belt (30) simultaneously wraps the 2-2 wheel (450) and the 2-3 wheel (460). Therefore, the rotational power transmitted to the 2-2 wheel (450) is transmitted to the 2-3 wheel (460) by the 3rd belt (30). At this time, the rotational direction (other direction) of the 2-2 wheel (450) and the rotational direction of the 2-3 wheel (460) are the same.

[0052] According to the same principle as the first roller unit (710) described above, it is preferable that the second roller unit (720) be positioned between a pair of second supports (420). At this time, the 2-3 wheel (460) is coupled with the second roller unit (720). Referring to FIG. 6, more specifically, the 2-3 wheel (460) is coupled with the 2-3 wheel axle (721), which is the central axis of the 2-3 roller unit (720). It is preferable that the 2-3 roller unit (720) has a columnar shape that extends in the width direction. Therefore, the rotational power of the 2-3 wheel (460) is ultimately transmitted to the 2-3 roller unit (720), and the rotational direction (other direction) of the 2-3 wheel (460) and the rotational direction of the 2-3 wheel (720) become the same.

[0053] Due to the above-described configuration, a structure can be formed in which a pair of roller parts (700) can be rotated in opposite directions using only a single power motor. This has the advantage of enabling miniaturization of the entire device.

[0054]

[0055] A pair of roller parts (700) are spaced apart in the longitudinal direction at a predetermined interval, and acellular allograft dermis is inserted at the spaced interval. At this time, as described above, the pair of roller parts (700) rotate in opposite directions, and when the acellular allograft dermis is inserted between the pair of roller parts (700) according to the direction of rotation, a structure is formed in which it moves while descending in the vertical direction. Therefore, when the worker simply inserts the acellular allograft dermis between the pair of roller parts (700), the acellular allograft dermis is lowered in the vertical direction without a separate operation. At the same time, as will be described later, a structure is formed in which the acellular allograft dermis is cut by encountering the cutter part (600).

[0056]

[0057] The cutter section (600) is positioned vertically downward of a pair of roller sections (700). At the same time, it is preferably positioned between a pair of roller sections (700) based on the longitudinal direction. Fig. 6 is an enlarged view of the cutter section.

[0058] The cutter unit (600) includes a pair of cutter frames (610, 620) and a blade (630). The blade (630) is positioned between the pair of cutter frames, and it is preferable that the pair of cutter frames be formed symmetrically around the blade (630). This allows a pair of cut acellular allografts to be uniformly distributed and settled, and allows an operator to easily remove the cut acellular allografts from the device.

[0059] The cutter frame close to the first roller section (710) is referred to as the first cutter frame (610), and the cutter frame close to the second roller section (720) is referred to as the second cutter frame (620). Both the pair of cutter frames and the blade (630) are formed to extend in the width direction.

[0060] When the acellular allograft passing between a pair of roller sections (700) descends vertically, it comes into contact with the blade (630). At this time, as will be described later, the blade (630) performs a reciprocating motion in the width direction by the first driving section (500), so that the acellular allograft descending vertically is cut by the blade (630). More specifically, the acellular allograft is cut while splitting in a shape in which the cut portion moves upward of the acellular allograft based on the vertical direction. In this process, the operator can cut the acellular allograft without separate manual work due to the configuration of the roller section (700) and the cutter section (600).

[0061] As the acellular allograft penetrates between a pair of roller sections (700), it receives a predetermined pressure in the longitudinal direction. In this process, the blade (630) reciprocates in the width direction of the acellular allograft and cuts the acellular allograft, so that a structure is formed in which the acellular allograft is cut while the longitudinal movement of the acellular allograft is restricted. Since the acellular allograft is soft due to its nature, it is not easy to cut without separate fixation, and the cut surface may not be uniform. However, according to the present invention, since it provides an effect similar to cutting the acellular allograft while fixing it, this problem can be solved.

[0062]

[0063] As will be described later, the cutter part (600) can be adjusted in the longitudinal direction, and thus, the contact point between the acellular allograft dermis and the cutter part (600) that has passed through a pair of roller parts (700) can be adjusted in the longitudinal direction. In other words, the thickness of the acellular allograft dermis can be adjusted after cutting, and since the longitudinal position adjustment of the cutter part (600) directly determines the thickness of the acellular allograft dermis, precise and fine thickness adjustment is possible, and at the same time, the vertical cutting structure enables flattening of the acellular allograft dermis, and since the acellular allograft dermis is lowered in the vertical direction and the cutter part (600) reciprocates in the longitudinal direction to cut the acellular allograft dermis, the cut surface becomes uniform. In summary, due to the above effects, there is an advantage in that the angiogenesis effect of the transplanted dermis is improved.

[0064]

[0065] It is preferable that the outer surfaces of the first cutter frame (610) and the second cutter frame (620) are formed with an inclined section centered on the blade (630), and it is preferable that the inclined sections are mutually symmetrical. In addition, it is preferable that the inclined sections of the outer surfaces of the first cutter frame (610) and the second cutter frame (620) are formed in a direction in which the inclined sections become farther apart from each other in the longitudinal direction as they go from the vertical top to the bottom. In addition, it is preferable that the outer surfaces of the first cutter frame (610) and the second cutter frame (620) are formed to extend in a vertical direction so as to be perpendicular to the ground after the inclined sections.

[0066] Due to this configuration, the cut acellular allograft moves along the inclined outer surfaces of the first cutter frame (610) and the second cutter frame (620), and does not move along the non-inclined outer surfaces from near the boundary between the inclined and non-inclined outer surfaces. Therefore, a structure is formed in which the cut acellular allograft moves in the outer direction of the first roller unit (710) and the second roller unit (720) as it rolls. As a result, the cut acellular allograft is settled in a fixed position, and the worker can easily pick it up, which has the advantage of improving the work speed.

[0067]

[0068] Below, the structures of the first driving unit (500) and the second driving unit (800) will be described. FIGS. 4 and 5 illustrate the coupling relationship between the first driving unit (500) and the second driving unit (800).

[0069] The first driving unit (500) includes a first panel unit (510), a bracket unit (520), a guide rail unit (530), and a second panel unit (540). The bracket unit (520) is coupled to the vertical lower portion of the first panel unit (510), the guide rail unit (530) is coupled to the vertical upper portion of the first panel unit (520), and the second panel unit (540) is fastened to the guide rail unit (530).

[0070] The bracket part (520) is fastened to a rail (110) that extends in the width direction from the main body part (100). More specifically, the bracket part (520) moves in the width direction along the rail (110) while being fastened to the rail (110).

[0071] At this time, the bracket part (520) is connected to the second driving part (800). The second driving part (800) includes a driving motor (810) and a driving crank (820). The driving motor (810) is connected to the driving crank (820), and an end of the driving crank (820) is simultaneously coupled to the bracket part (520). As a result, the rotational power of the driving motor (810) is transmitted to the driving crank (820), and since the bracket part (520) connected to the driving crank (820) is fastened to the rail (110) and has a structure that only allows movement in the width direction, the rotational power of the driving motor (810) is converted into a linear reciprocating motion of the bracket part (520) in the width direction. Therefore, while the driving motor (810) is driven, the bracket part (520) performs a reciprocating motion in the width direction along the rail (110).

[0072] Due to the above-described structure, the first panel portion (510) coupled with the bracket portion (520) also performs a reciprocating motion in the width direction, and the second panel portion (540) coupled to the first panel portion (510) via the guide rail portion (530) also performs a reciprocating motion in the width direction. The front surface of the second panel portion (540) is coupled with the cutter portion (600) described above. Therefore, the cutter portion (600) also performs a reciprocating motion in the width direction.

[0073] At this time, independently of the second panel part (540) reciprocating in the width direction, the second panel part (540) can be moved in the length direction along the guide rail part (530) by the cutter adjustment part (1000) described later.

[0074]

[0075] Fig. 7 is an enlarged view of the cutter adjustment unit. Hereinafter, the position adjustment unit will be described with reference to Fig. 7.

[0076] The cutter control unit (1000) according to the present invention includes a cutter control member (1100), a first cutter fixing member (1200), a first elastic member (1300), and a second cutter fixing member (1400).

[0077] First, the first cutter fixture (1200) is coupled to the side of the second panel portion (540) and includes a first cutter fixture protrusion (1201) that extends in the width direction. In addition, the second cutter fixture (1400) is coupled to a point of the main body portion and includes a second cutter fixture protrusion (1401) that extends in the width direction. At this time, one end of the first elastic member (1300) is supported by being loop-joined to the first cutter fixture protrusion (1201), and the other end of the first elastic member (1300) is supported by being loop-joined to the second cutter fixture protrusion (1402). The first elastic member (1300) can be stretched and contracted in the length direction in a state where the loops (1301) that protrude at both ends are supported by the first cutter fixture protrusion (1201) and the second cutter fixture protrusion (1402), respectively. At this time, the second cutter fixing member (1400) is fixed, and the first cutter fixing member (1200) moves in the longitudinal direction in response to the movement of the second panel portion (540) in the longitudinal direction. When the first cutter fixing member (1200) moves to the front in the longitudinal direction, at the same time, the first cutter fixing member (1200) receives a force that pulls it in the rear direction in the longitudinal direction due to elastic recovery force.

[0078] At this time, it is preferable that the cutter adjustment device (1100) is formed as a bar having, for example, a dial-shaped knob, and the end of the bar is preferably supported by being in contact with the first cutter fixing device (1200). The bar can be moved in the longitudinal direction as desired by the user according to the dial adjustment, and when the bar of the cutter adjustment device (1100) is moved to the front in the longitudinal direction, the first cutter fixing device (1200) in contact therewith also moves to the front in the longitudinal direction, and the second panel portion (540) combined with the first cutter fixing device (1200) also moves to the front in the longitudinal direction. That is, the force that pulls the first cutter fixing member (1200) in the rearward direction in the longitudinal direction due to elastic recovery force and the force that pushes the bar of the cutter adjusting member (1100) in the frontward direction in the longitudinal direction are applied in opposite directions, and due to this structure, the first cutter fixing member (1200) moves to the front in the longitudinal direction as much as the worker pushes the bar of the cutter adjusting member (1100) in the longitudinal direction. In addition, the second panel portion (540) coupled with the first cutter fixing member (1200) and the cutter portion (600) coupled with the second panel portion (540) can also move to the front in the longitudinal direction.

[0079]

[0080] As described above, since the longitudinal position of the cutter part (600) can be adjusted according to the operator's intention, not only can the cutting thickness of the acellular allograft be adjusted, but there is an advantage in that the cutting thickness of the acellular allograft can be finely adjusted by finely adjusting the bar of the cutter adjustment device (1100). At this time, separately from the movement of the entire position of the cutter part (600) in the longitudinal direction, the first panel part (510) connected to the second panel part (540) coupled to the cutter part (600) still performs a reciprocating motion in the width direction, so that the cutter part (600) performs a reciprocating motion in the width direction in a state in which the entire position of the cutter part (600) is moved in the longitudinal direction.

[0081]

[0082] Fig. 8 is an enlarged view of the cutter position fixing member, and the cutter position fixing member (1500) is positioned vertically above the cutter adjustment member (1000) described above. The cutter position fixing member (1500) is formed with a cutter hole (1501) that extends in the longitudinal direction, and the cutter hole (1501) is vertically penetrated to form a hollow portion. At this time, a first cutter fixing member groove (1202) that is vertically sunken or penetrated is formed in the first cutter fixing member (1200), and this faces the cutter hole (1501) in the vertical direction. Accordingly, as described above, when the operator changes the longitudinal position of the cutter part (600) by adjusting the bar of the cutter adjustment device (1100), and simultaneously fastens the unillustrated bolt through the cutter hole (1501) and into the first cutter fixing groove (1202), the longitudinal movement of the first cutter fixing device (1200) is restricted, thereby fixing the position. Accordingly, by restricting the movement of the cutter part (600) whose position has been changed in the longitudinal direction and allowing it to reciprocate in the width direction, there is an advantage in that the stability of the work can be improved during cutting, and the twisting of the cutter part (600) can be minimized, thereby improving the quality of the cut acellular allograft.

[0083]

[0084] Fig. 9 illustrates the configuration of a roller adjustment unit. Hereinafter, the roller adjustment unit will be described with reference to Fig. 9.

[0085] The roller adjustment unit (900) according to the present invention includes a roller adjustment member (910), a first roller fixing member (920), a second elastic member (940), and a second roller fixing member (930).

[0086] First, the first roller fixture (920) is coupled to one end of the second support (420) and includes a first roller fixture protrusion (921) that extends in the width direction. In addition, the second roller fixture (930) is coupled to one point of the second-third wheel axle (721) and extends in the width direction and protrudes.

[0087] At this time, one end of the second elastic member (940) is supported by being loop-joined to the first roller fixing member protrusion (921), and the other end of the second elastic member (940) is supported by being loop-joined to the second roller fixing member (930). The second elastic member (940) can be stretched and contracted in the longitudinal direction while the loops (941) protruding at both ends are supported by the first roller fixing member protrusion (921) and the second roller fixing member (930), respectively. At this time, the first roller fixing member (920) is fixed, and the second roller fixing member (930) moves in the longitudinal direction in response to the movement of the second roller part (720) in the longitudinal direction. When the second roller fixing member (930) moves to the rear in the longitudinal direction, at the same time, the second roller fixing member (930) receives a force that is pulled in the front direction in the longitudinal direction due to the elastic recovery force.

[0088] At this time, it is preferable that the roller adjustment part (910) is formed as a bar with a dial-shaped knob, for example, and the end of the bar is preferably supported by being in contact with the 2nd-3rd wheel axle (721). The bar can be moved in the longitudinal direction as much as the user desires according to the dial adjustment, and when the bar of the roller adjustment part (910) is moved to the rear in the longitudinal direction, the 2nd-3rd wheel axle (721) in contact therewith also moves to the rear in the longitudinal direction, and the second roller part (720) coupled with the 2nd-3rd wheel axle (721) also moves to the rear in the longitudinal direction. That is, the force that pulls the second roller fixture (930) in the longitudinal forward direction due to elastic recovery and the force that pushes the second-third wheel axle (721) connected to the second roller fixture (930) by the bar of the roller adjustment member (910) in the longitudinal rearward direction are applied in opposite directions, and due to this structure, the second roller fixture (930) moves to the rearward direction in the longitudinal direction as much as the worker pushes the bar of the roller adjustment member (910) in the longitudinal direction. In addition, the second roller portion (720) connected to the second roller fixture (930) can also move to the rearward direction in the longitudinal direction.

[0089]

[0090] Since the longitudinal position of the second roller unit (720) can be changed, the longitudinal gap between the first roller unit (710) and the second roller unit (720) can be adjusted. Accordingly, the degree of pressure applied to the acellular allograft, which is vertically descending before coming into contact with the cutter unit (600), can be precisely adjusted, and there is an advantage in that the stability of the work can be improved during cutting, and the quality of the cut acellular allograft can be improved by minimizing the twisting of the acellular allograft.

[0091]

[0092] In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications can be made by a person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present invention.

[0093] [Explanation of symbols]

[0094] 100: main body,

[0095] 200: Power unit,

[0096] 300: 1st support,

[0097] 400: Second support,

[0098] 500: 1st drive unit,

[0099] 600: Cutter section,

[0100] 700: Roller section,

[0101] 800: Second drive unit,

[0102] 900: Roller adjustment unit,

[0103] The present invention relates to a cutting device that can flatten the dermis to increase uniformity and finely control the thickness of the dermis in order to improve the angiogenesis effect and survival rate following transplantation of acellular allograft dermis.

Claims

1. Main body; A first support member positioned at the front of the main body; A second support part positioned on the front side of the main body part, adjacent to the first support part and positioned on the front side of the first support part; A pair of roller parts that are formed to extend in the width direction and rotate in opposite directions while being linked to the first support part and the second support part; and A cutter section positioned between the above pair of roller sections; An acellular allograft is inserted between the pair of roller parts, and the acellular allograft is lowered in the vertical direction due to the rotation of the pair of roller parts, and at the same time, the acellular allograft is cut by contacting the cutter part. A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

2. In paragraph 1, The above cutter part, A first driving unit that reciprocates in the width direction; and is linked to reciprocate in the width direction. A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

3. In paragraph 2, The above first driving unit, A bracket part that is formed on the main body and is attached to a rail that extends in the width direction, and moves in the width direction along the rail; A first panel portion coupled to the vertical upper portion of the above bracket portion; A guide rail portion formed on the upper part of the vertical direction of the first panel portion and extending in the longitudinal direction; and A second panel part is attached to the above guide rail part and moves longitudinally along the above guide rail part; A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

4. In paragraph 3, The cutter part is coupled to the front of the second panel part, Due to the longitudinal movement of the second panel portion, the cutter portion can also move in the longitudinal direction, thereby controlling the cutting thickness of the acellular allograft dermis descending in the vertical direction. A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

5. In paragraph 4, The above bracket part is coupled to the second driving part, The above second driving unit, drive motor; A drive crank that receives rotational power from the above-mentioned drive motor and converts it into a reciprocating linear motion in the width direction, and is coupled with the above-mentioned bracket part; A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

6. In paragraph 5, The above cutter part, A pair of cutter frames formed to be adjacent in the length direction and each extending in the width direction; and A blade positioned between the above pair of cutter frames and formed to extend in the width direction; A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

7. In paragraph 6, The above pair of cutter frames are symmetrical around the blade. A device for controlling the thickness of acellular allograft dermis with fine adjustment and flattening.

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