Molding device for oral repair membrane, oral repair membrane and method for manufacturing membrane

Abstract

The present invention relates to the technical field of medical devices and discloses a forming device for an oral repair membrane, which includes a base and an upper pressing seat. A cutting edge is provided on the cutting plane at the top of the base, and the edge of the cutting edge forms a spider web structure. The film substrate is clamped between the pressing groove of the upper pressing seat and the cutting plane. While the cutting edge cuts the film substrate, the groove wall of the pressing groove extrudes the edge of the film substrate to bend, forming a to-be-edge-pressed film with a hollow part. The hollow part maintains blood supply to ensure the supply of cell growth factors. A pressing edge groove is recessed on the pressing edge plane at the bottom of the base. The bent edge of the to-be-edge-pressed film is docked with the pressing edge groove. The to-be-edge-pressed film is clamped between the pressing edge plane of the base and any horizontal plane, and the base is pressed towards the horizontal plane. The bent edge of the to-be-edge-pressed film bends and folds inward along the pressing edge groove to form an oral repair membrane, the middle of which adopts a spider web structure, having high supporting force and high stability. The sharp edge after cutting is bent inward to be hidden, avoiding the risk of being scratched and improving the use safety.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular, to a forming device for an oral repair membrane, an oral repair membrane, and a film-making method. Background Art

[0002] Clinically, alveolar bone defect problems are often caused by various reasons such as periodontal disease, dental trauma, tumors, etc. Since the growth of alveolar bone is relatively slow, while the proliferation of fibroblasts and epithelial cells is relatively fast, after the occurrence of bone defects, fibroblasts and epithelial cells will occupy the defect space in advance to form soft tissues, affecting bone reconstruction.

[0003] The existing guided bone regeneration technology (GBR) uses the characteristics of a barrier membrane to prevent fibroblasts from the surrounding soft tissues, allowing osteoblasts at the bone surface to have enough time to proliferate, and finally achieving the purpose of tissue regeneration and directional repair. In addition to the shielding effect, the guided bone regeneration technology also needs to meet blood supply to ensure the supply of cell growth factors.

[0004] The barrier membranes in the prior art can be made of collagen, which can be compatible with the human body, but will collapse in a wet environment and it is difficult to have spatial support; or there are also some barrier membranes made of titanium mesh, but using titanium mesh to make barrier membranes will produce sharp edges after cutting the titanium mesh, which are likely to stab the periosteum and soft tissues, affecting the treatment effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a forming device for an oral repair membrane, an oral repair membrane, and a film-making method, which can maintain blood supply, ensure the supply of cell growth factors, have high support force and high stability, and are safer to use.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A forming device for an oral repair membrane, comprising:

[0008] A base, on the top of which there is a pressing and cutting plane, and a pressing and cutting edge vertically protrudes from the pressing and cutting plane, and the edge of the pressing and cutting edge forms a spider web structure; on the bottom of the base there is a pressing edge plane, and a pressing edge groove is recessed in the pressing edge plane, and the pressing edge groove is set in a rectangular frame shape;

[0009] An upper pressing seat, which is provided with a pressing groove, the bottom of the pressing groove is larger than the pressing and cutting plane, the bottom of the pressing groove is smaller than the film substrate, and the upper pressing seat can be movably sleeved on the pressing and cutting plane through the pressing groove so that the bottom of the pressing groove is in contact with the edge of the pressing and cutting edge.

[0010] As an optional technical solution of the forming device for an oral repair membrane, the height of the pressing and cutting edge is greater than the thickness of the film substrate.

[0011] As an alternative technical solution of the forming device for the oral repair film, a blanking and collecting cavity is arranged inside the base, a blanking hollow is arranged on the inner circumference of the cutting edge of the cutting plane, and the blanking hollow is directly communicated with the blanking and collecting cavity.

[0012] As an alternative technical solution of the forming device for the oral repair film, the base includes a cutting part and a pressing edge part connected in the vertical direction. The cutting part is provided with a cutting step, and the cutting step includes a first folding surface, a second folding surface and a third folding surface connected in sequence. The first folding surface is the cutting plane, the included angle between the first folding surface and the cutting plane is greater than or equal to 90°, and the third folding surface is parallel to the cutting plane and the distance is greater than the depth of the pressing groove; the bottom surface of the pressing edge part is set as the pressing edge plane.

[0013] As an alternative technical solution of the forming device for the oral repair film, the cutting part and the pressing edge part are detachably connected.

[0014] As an alternative technical solution of the forming device for the oral repair film, the upper pressing seat is provided with a limiting groove, the pressing groove is opened at the bottom of the limiting groove, and the limiting groove is used for placing the film base material.

[0015] As an alternative technical solution of the forming device for the oral repair film, a supporting plane is arranged on one side of the upper pressing seat away from the pressing groove, the supporting plane is used for placing the film to be pressed at the edge, and the supporting plane and the pressing edge plane can jointly press the film to be pressed at the edge so that the edge of the film to be pressed at the edge bends inward along the pressing edge groove.

[0016] The oral repair film is made by using the forming device for the oral repair film as described in any one of the above.

[0017] The film manufacturing method is used for manufacturing the above-mentioned oral repair film, and the film manufacturing method includes:

[0018] Step 1: Cut the film sheet into a rectangle with a preset size and cut off the four corners to form a film base material;

[0019] Step 2: Clamp the film base material between the pressing groove of the upper pressing seat and the cutting plane of the base, and press the upper pressing seat downward. The cutting edge of the cutting blade cuts the film base material until the cutting edge of the cutting blade is in contact with the bottom of the pressing groove. At the same time, the groove wall of the pressing groove squeezes the edge of the film base material to bend, forming a film to be pressed at the edge;

[0020] Step 3: Dock the bent edge of the film to be pressed at the edge with the pressing edge groove. The film to be pressed at the edge is clamped between the pressing edge plane of the base and any horizontal plane, and the base is pressed against the horizontal plane. The bent edge of the film to be pressed at the edge bends and folds inward along the pressing edge groove to form an oral repair film.

[0021] As an alternative technical solution of the film forming method, in step three, any horizontal plane may adopt the plane on the side of the upper pressing seat away from the pressing groove.

[0022] Advantages of the present invention:

[0023] The film forming device for the oral repair film provided by the present invention includes a base and an upper pressing seat. A pressing and cutting plane is provided at the top of the base, and a pressing and cutting edge protrudes vertically on the pressing and cutting plane. The edge of the pressing and cutting edge forms a spider web structure; a corresponding pressing groove is provided on the upper pressing seat. The bottom of the pressing groove is larger than the pressing and cutting plane and smaller than the film base material. The upper pressing seat can be movably sleeved on the pressing and cutting plane through the pressing groove, sandwiching the film base material with its four corners cut off between the pressing groove of the upper pressing seat and the pressing and cutting plane of the base, and pressing the upper pressing seat downward. The edge of the pressing and cutting edge presses the film base material until the edge of the pressing and cutting edge is in contact with the bottom of the pressing groove. At the same time, the groove wall of the pressing groove squeezes the edge of the film base material to bend, forming a to-be-pressed-edge film with a hollow part. The hollow part can maintain blood supply to ensure the supply of cell growth factors. A pressing edge plane is provided at the bottom of the base, and a pressing edge groove is recessed on the pressing edge plane. The pressing edge groove is set in a rectangular frame shape. The bent edge of the to-be-pressed-edge film is docked with the pressing edge groove. The to-be-pressed-edge film is sandwiched between the pressing edge plane of the base and any horizontal plane, and the base is pressed against the horizontal plane. The bent edge of the to-be-pressed-edge film bends and folds inward along the pressing edge groove to form an oral repair film. The middle of this oral repair film adopts a spider web structure, which can withstand greater tensile strength and supporting force and has high stability; and the sharp edges after cutting are bent inward and hidden, avoiding the risk of being scratched and improving the use safety. Description of the drawings

[0024] Figure 1 is the front view of the film sheet in the film forming method provided by the specific embodiment of the present invention;

[0025] Figure 2 is the front view of the film base material in the film forming method provided by the specific embodiment of the present invention;

[0026] Figure 3 is the axonometric view of the film base material in the film forming method provided by the specific embodiment of the present invention;

[0027] Figure 4 is the structural schematic diagram of the upper pressing seat of the film forming device for the oral repair film provided by the specific embodiment of the present invention;

[0028] Figure 5 is the assembly schematic diagram of the upper pressing seat and the film base material of the film forming device for the oral repair film provided by the specific embodiment of the present invention;

[0029] Figure 6It is the top view of the base of the forming device for the oral repair film provided by the specific embodiment of the present invention;

[0030] Figure 7 It is the side view of the base of the forming device for the oral repair film provided by the specific embodiment of the present invention;

[0031] Figure 8 It is the bottom view of the base of the forming device for the oral repair film provided by the specific embodiment of the present invention;

[0032] Figure 9 It is the axonometric view of the base of the forming device for the oral repair film provided by the specific embodiment of the present invention;

[0033] Figure 10 It is the sectional view of the base of the forming device for the oral repair film provided by the specific embodiment of the present invention;

[0034] Figure 11 It is the sectional view of the base of the forming device for the oral repair film in another embodiment provided by the specific embodiment of the present invention;

[0035] Figure 12 It is the working schematic diagram of the forming device for the oral repair film in step two of the film making method provided by the specific embodiment of the present invention;

[0036] Figure 13 It is Figure 12 the sectional view of;

[0037] Figure 14 It is Figure 12 the exploded view of;

[0038] Figure 15 It is the front view of the film to be hemmed in the film making method provided by the specific embodiment of the present invention;

[0039] Figure 16 It is the side view of the film to be hemmed in the film making method provided by the specific embodiment of the present invention;

[0040] Figure 17 It is the axonometric view of the film to be hemmed in the film making method provided by the specific embodiment of the present invention;

[0041] Figure 18 It is the working schematic diagram of the forming device for the oral repair film in step three of the film making method provided by the specific embodiment of the present invention;

[0042] Figure 19 It is the axonometric view of the oral repair film provided by the specific embodiment of the present invention.

[0043] In the figure:

[0044] 100. Base; 101. Press-cut plane; 1011. Blanking hollow; 102. Second folding surface; 103. Third folding surface; 104. Blanking collection cavity; 105. Edge-pressing plane; 1051. Edge-pressing groove; 110. Press-cut edge

[0045] 200. Upper pressing seat; 201. Supporting plane; 210. Press-fitting groove; 220. Position-limiting groove

[0046] 300. Diaphragm sheet; 400. Membrane substrate; 500. Membrane to be edge-pressed; 600. Oral repair membrane Specific embodiments

[0047] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0048] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0049] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0050] In the description of this embodiment, the orientation or positional relationship such as "above", "below", "right", and "left" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0051] AsFigures 1 to 19 As shown in the figure, the present invention discloses a forming device for an oral repair film and an oral repair film 600. The forming device for the oral repair film includes a base 100 and an upper pressing seat 200. A pressing and cutting plane 101 is provided at the top of the base 100, and a pressing and cutting edge 110 protrudes vertically on the pressing and cutting plane 101. The edge of the pressing and cutting edge 110 forms a spider web structure. Correspondingly, the upper pressing seat 200 is provided with a pressing groove 210. The bottom of the pressing groove 210 is larger than the pressing and cutting plane 101, and the bottom of the pressing groove 210 is smaller than the film substrate 400. The upper pressing seat 200 can be movably sleeved on the pressing and cutting plane 101 through the pressing groove 210. The film substrate 400 with its four corners cut off is clamped between the pressing groove 210 of the upper pressing seat 200 and the pressing and cutting plane 101 of the base 100, and the upper pressing seat 200 is pressed downward. The edge of the pressing and cutting edge 110 presses the film substrate 400 until the edge of the pressing and cutting edge 110 contacts the bottom of the pressing groove 210. At the same time, the groove wall of the pressing groove 210 squeezes the edge of the film substrate 400 to bend, forming a to-be-edge-pressed film 500 with a hollow part. The hollow part can maintain blood supply and ensure the supply of cell growth factors. A pressing edge plane 105 is provided at the bottom of the base 100, and a pressing edge groove 1051 is recessed on the pressing edge plane 105. The pressing edge groove 1051 is set in a rectangular frame shape. The bent edge of the to-be-edge-pressed film 500 is docked with the pressing edge groove 1051. The to-be-edge-pressed film 500 is clamped between the pressing edge plane 105 of the base 100 and any horizontal plane, and the base 100 is pressed towards the horizontal plane. The bent edge of the to-be-edge-pressed film 500 bends and folds inward along the pressing edge groove 1051 to form an oral repair film 600.

[0052] As Figure 19 shown, the oral repair film 600 prepared by using the forming device for the oral repair film has a spider web structure in the middle, can withstand a relatively large tensile strength and supporting force, and has high stability; at the same time, it can maintain blood supply and ensure the supply of cell growth factors; and the sharp edges after cutting are bent inward and hidden, avoiding the risk of being scratched and improving the use safety.

[0053] Specifically, the material of the oral repair film 600 is made of a biodegradable magnesium alloy material, which can be safely degraded in the human body, avoiding secondary surgery for removal and reducing the damage to the patient.

[0054] In order to better press and cut the film substrate 400, the height of the pressing and cutting edge 110 is set to be greater than the thickness of the film substrate 400 to ensure that a spider web structure is formed by cutting through the film substrate 400.

[0055] In this embodiment, the interior of the base 100 is provided with a blanking collection cavity 104 by adopting a cavity structure. See Figure 10, a blanking hollow 1011 is provided on the inner circumference of the cutting edge of the cutting plane 101. The blanking hollow 1011 is directly communicated with the blanking collection cavity 104. During the cutting and forming process of the oral repair film forming device, the waste after cutting the film substrate 400 falls into the blanking collection cavity 104 inside the base 100 under the action of gravity, avoiding the accumulation and splashing of waste in the cutting plane 101, affecting the continuity of cutting, and improving the working efficiency of the oral repair film forming device.

[0056] Exemplarily, the base 100 includes a cutting part and a hemming part connected along the vertical direction. The cutting part is provided with a cutting step, and the cutting step includes a first folding surface, a second folding surface 102 and a third folding surface 103 connected in sequence. The first folding surface is the cutting plane 101, and the included angle between the first folding surface and the cutting plane 101 is greater than or equal to 90°. The bending angles of the four peripheral edges of the film substrate 400 also correspondingly are greater than or equal to 90°, avoiding being stuck with the cutting part of the base 100 and being difficult to remove. Among them, the third folding surface 103 is parallel to the cutting plane 101 and the distance is greater than the groove depth of the pressing groove 210. Such a setting ensures that the top of the pressing groove 210 cannot abut and interfere with the third folding surface 103, and can ensure that the cutting between the base 100 and the upper pressing seat 200 is in place.

[0057] Optionally, the bottom surface of the hemming part is set as a hemming plane 105, and the cutting part and the hemming part are detachably connected. Refer to Figure 11 , the base 100 with both cutting function and hemming function can be split into two parts, which can make the oral repair film 600 more flexibly and further improve the working efficiency. It can be understood that since the inside of the base 100 is provided with a cavity structure with a blanking collection cavity 104, the blanking collection cavity 104 is separately arranged in the cutting part, and the hemming part still has a certain thickness corresponding to the hemming plane 105 as a solid structure, which can improve the strength of the hemming plane 105 and the hemming groove 1051 and extend the service life of the oral repair film forming device.

[0058] Specifically, as shown in Figure 4 , the upper pressing seat 200 is provided with a limiting groove 220, the pressing groove 210 is opened at the bottom of the limiting groove 220, and the inner size of the limiting groove 220 exactly matches the cut film substrate 400 for placing the film substrate 400, avoiding the displacement of the film substrate 400 before stable cutting, resulting in incorrect cutting positions, and improving the working stability of the oral repair film forming device.

[0059] The present invention also discloses a film manufacturing method for manufacturing an oral repair film 600 using the above-mentioned oral repair film forming device. The film manufacturing method includes:

[0060] Step 1: Cut the film sheet 300 into a rectangle of a preset size and cut off the four corners to form a film substrate 400;

[0061] Step 2: Clamp the film substrate 400 between the pressing groove 210 of the upper pressing seat 200 and the pressing and cutting plane 101 of the base 100, and press the upper pressing seat 200 downward. The cutting edge of the pressing and cutting blade 110 presses the film substrate 400 until the cutting edge of the pressing and cutting blade 110 touches the bottom of the pressing groove 210. At the same time, the groove wall of the pressing groove 210 squeezes the edge of the film substrate 400 to bend, forming the film to be edge-pressed 500.

[0062] Step 3: Align the bent edge of the film to be edge-pressed 500 with the edge-pressing groove 1051. Clamp the film to be edge-pressed 500 between the edge-pressing plane 105 of the base 100 and any horizontal plane, and press the base 100 against the horizontal plane. The bent edge of the film to be edge-pressed 500 bends and folds inward along the edge-pressing groove 1051, forming the oral repair film 600.

[0063] Further, a support plane 201 is provided on the side of the upper pressing seat 200 away from the pressing groove 210. The support plane 201 is used to place the film to be edge-pressed 500. In Step 3, any horizontal plane can adopt the support plane 201 of the upper pressing seat 200, which can jointly press the film to be edge-pressed 500 with the edge-pressing plane 105 so that the edge of the film to be edge-pressed 500 bends inward along the edge-pressing groove 1051. The forming device of the oral repair film is functionally integrated and has a high integrity, and can independently produce the oral repair film 600.

[0064] In this embodiment, first use scissors to Figure 1 cut the original film sheet 300 with a thickness of 1 mm into a rectangle of a preset size. If an oral repair film 600 with a size of 100 mm × 60 mm is required, then cut the film sheet 300 into 110 mm × 70 mm, that is, leave 5 mm on each side, and then cut off the four corners to form the film substrate 400. For the structure of the film substrate 400, see Figure 2 and Figure 3 ; Then place the cut film substrate 400 into the limit groove 220 of the upper pressing plate as shown in Figure 5 . Clamp the upper pressing plate, the film substrate 400 and the base 100 together, so that the film substrate 400 is clamped between the pressing groove 210 of the upper pressing seat 200 and the pressing and cutting plane 101 of the base 100, and press the upper pressing seat 200 downward forcefully. The cutting edge of the pressing and cutting blade 110 presses the film substrate 400 until the cutting edge of the pressing and cutting blade 110 touches the bottom of the pressing groove 210. The middle part of the film substrate 400 forms a spider web structure under pressure. The waste after pressing and cutting is collected in the blanking collection cavity 104. At the same time, the groove wall of the pressing groove 210 squeezes the edge of the film substrate 400 to bend at about 90°, forming the film to be edge-pressed 500. For the structure of the film to be edge-pressed 500, see Figures 15 to 17;Finally, the bent edge of the membrane to be edge-pressed 500 is docked with the edge-pressing groove 1051. The membrane to be edge-pressed 500 is clamped between the edge-pressing plane 105 of the base 100 and the supporting plane 201, and the base 100 is pressed against the supporting plane 201. The bent edge of the membrane to be edge-pressed 500 is bent and folded inward along the edge-pressing groove 1051 to form the oral repair membrane 600.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A forming device for oral repair membrane, characterized in that: include: A base (100), wherein a cutting plane (101) is arranged on the top of the base (100), a cutting blade (110) is vertically convexly arranged on the cutting plane (101), and the edge of the cutting blade (110) forms a spider web structure; a pressing plane (105) is arranged on the bottom of the base (100), a pressing groove (1051) is concavely arranged on the pressing plane (105), and the pressing groove (1051) is arranged in a rectangular frame shape; An upper press seat (200), wherein the upper press seat (200) is provided with a pressing groove (210), wherein the groove bottom of the pressing groove (210) is larger than the pressing and cutting plane (101), and the groove bottom of the pressing groove (210) is smaller than the film substrate (400), wherein the upper press seat (200) and the base (100) are used to clamp the film substrate (400), and the upper press seat (200) can be movably sleeved on the pressing and cutting plane (101) through the pressing groove (210) so that the groove bottom of the pressing groove (210) is in contact with the cutting edge of the pressing and cutting blade (110).

2. The forming device of the oral repair membrane according to claim 1, characterized in that: The height of the pressing and cutting blade (110) is greater than the thickness of the film substrate (400).

3. The forming device of the oral repair membrane according to claim 1, characterized in that: A material collection chamber (104) is provided inside the base (100), and a material cutting hollow (1011) is provided on the inner periphery of the cutting edge of the cutting blade (110) on the cutting plane (101), and the material cutting hollow (1011) is directly connected to the material collection chamber (104).

4. The forming device of the oral repair membrane according to claim 1, characterized in that: The base (100) comprises a pressing and cutting portion and a pressing edge portion connected in a vertical direction, the pressing and cutting portion is provided with a pressing and cutting step, the pressing and cutting step comprises a first folding surface, a second folding surface (102) and a third folding surface (103) connected in sequence, the first folding surface is the pressing and cutting plane (101), the angle between the first folding surface and the pressing and cutting plane (101) is greater than or equal to 90°, the third folding surface (103) is parallel to the pressing and cutting plane (101) and the distance between them is greater than the groove depth of the pressing groove (210); the bottom surface of the pressing edge portion is set as the pressing edge plane (105).

5. The forming device of the oral repair membrane according to claim 4, characterized in that: The cutting portion and the edge pressing portion are detachably connected.

6. The forming device of the oral repair membrane according to claim 1, characterized in that: The upper press seat (200) is provided with a limiting groove (220), the pressing groove (210) is opened at the groove bottom of the limiting groove (220), and the limiting groove (220) is used to place the film substrate (400).

7. The device for forming an oral repair membrane according to claim 1, characterized in that: A support plane (201) is provided on one side of the upper pressing seat (200) away from the pressing groove (210), and the support plane (201) is used to place the film to be pressed (500), and the support plane (201) and the pressing plane (105) can jointly press the film to be pressed (500) so that the edge of the film to be pressed (500) is bent inwardly along the pressing groove (1051).

8. An oral repair membrane, characterized in that: The oral repair membrane is made using the molding device of any one of claims 1 to 7.

9. A film-forming method, characterized in that: For preparing the oral repair membrane according to claim 8, the membrane making method comprises: Step 1: cutting the film sheet (300) into a rectangle of a preset size and cutting off the four corners to form a film substrate (400); Step 2, clamping the film substrate (400) between the pressing groove (210) of the upper pressing seat (200) and the pressing plane (101) of the base (100), and pressing the upper pressing seat (200) downward, the cutting edge of the pressing blade (110) pressing the film substrate (400) until the cutting edge of the pressing blade (110) contacts the bottom of the pressing groove (210), and at the same time, the groove wall of the pressing groove (210) squeezes the edge of the film substrate (400) to bend, so as to form a film to be pressed (500); Step three, dock the bent edge of the film to be pressed (500) with the pressing groove (1051), clamp the film to be pressed (500) between the pressing plane (105) of the base (100) and any horizontal plane, and press the base (100) toward the horizontal plane, and the bent edge of the film to be pressed (500) is bent and folded inward along the pressing groove (1051) to form an oral repair membrane.

10. The film forming method according to claim 9, characterized in that: In step three, the arbitrary horizontal plane may be a side plane of the upper pressing seat (200) away from the pressing groove (210).

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