Convenient preparation tool for palatal side free gingiva and use method of convenient preparation tool

Abstract

The invention relates to a convenient preparation tool for palatal side free gingiva and a use method thereof, the convenient preparation tool comprises a disposable handle and a head cutting device, the disposable handle is rigidly connected with the head cutting device, the head cutting device comprises a cutting module and a collecting channel, the collecting channel is arranged behind the cutting module, and the collecting channel is connected with the disposable handle. The cutting module comprises a horizontal blade and a vertical blade, the instrument can adapt to the anatomical form of the curved surface of the palate in the cutting process through the width limiting and arc design of the horizontal blade, the width is controllable, and the influence of subjectivity of an operator on the quality of a prepared graft is reduced; through height limitation of the vertical blades on the two sides, the stable cutting depth is maintained, the thickness uniformity of the graft is remarkably improved, the edge integrity of the graft is kept, the problem that the graft is broken or too thin due to angle deviation or uneven force application in traditional operation is solved, meanwhile, accidental injuries to deep vascular nerve plexus are reduced, and the survival rate of the graft is increased. And the risk of complications such as postoperative bleeding, pain and donor healing delay is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of oral medical instruments, and particularly relates to a convenient tool for obtaining palatal free gingiva and its using method. Background Art

[0002] Due to periodontal and peri-implant soft tissue deficiencies caused by various reasons, such as gingival recession, peri-implant soft tissue recession, keratinized tissue deficiency, etc., autologous transplantation is often used clinically to increase the amount of soft tissue. The palatal soft tissue is currently the best source of autologous soft tissue grafts. However, when preparing palatal free soft tissue clinically at present, a surgical blade (such as a No. 15 or 15C blade) is commonly used to obtain the palatal soft tissue. This method has problems such as high technical sensitivity, great operation difficulty, and high risk of postoperative complications. Specifically, it is highly technically sensitive, requiring the operator to have proficient and precise control over the depth and width of the extraction; the operation is difficult, and the rigid handle and fixed blade design of the existing instruments are difficult to achieve flexible fine-tuning; the operation time is long, and the operator often needs to use auxiliary tools to cooperate in separating the subepithelial connective tissue; the quality of the graft is not good, and the free gingival tissue obtained by the conventional surgical tools has the problem of being not flat enough. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention aims to provide a convenient tool for obtaining palatal free gingiva and its using method, so as to solve the contradiction between accuracy, efficiency and safety in palatal skin grafting surgery, reduce the technical sensitivity of soft tissue augmentation surgery, and improve the quality of the graft and the success rate of the surgery.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A convenient tool for obtaining palatal free gingiva includes a disposable handle and a head cutting device, and the disposable handle is rigidly connected to the head cutting device; The head cutting device includes a cutting module and a collection channel, and the collection channel is arranged behind the cutting module; The cutting module includes a horizontal blade for horizontally cutting the palatal mucosal epithelium and vertical blades for vertically cutting into the submucosa on both sides of the horizontal incision to define the thickness of the graft on both sides; The collection channel is a funnel-shaped opening, and the inner wall is covered with a medical silicone gasket, and there is an arc transition between the bottom edge of the collection channel and the horizontal blade.

[0005] In the present invention, the surface of the disposable handle is provided with anti-slip lines. The total length of the disposable handle is 120 mm, the diameter is 8 mm, and the end is integrally connected to the head cutting device.

[0006] In the present invention, the width of the horizontal blade is 4 mm to 10 mm, the height of the bilateral vertical blades is 1.5 mm to 1.8 mm, the vertical blades are connected to the horizontal blade at an angle β of 90°, and the blade surfaces of the vertical blades and the horizontal blade are polished.

[0007] In the present invention, the width of the collection channel is greater than the width of the horizontal blade, and the height of the collection channel is 10 mm.

[0008] The present invention also provides a method for using the above-mentioned convenient free gingiva preparation tool, including the following steps: S1. Select a suitable horizontal blade specification according to the width of the keratinized gingiva defect; S2. Adjust the blade direction towards the pharynx, gently press and cut from the starting point of the palatal mucosa in the anterior tooth area, and keep the disposable handle parallel to the palatal midline; S3. Push the tool forward at a constant speed. While the horizontal blade cuts through the epithelial layer, the bilateral vertical blades simultaneously cut down to the preset thickness; S4. After cutting, the strip-shaped free gingiva graft completely enters the collection channel, and use forceps to pick up the graft and trim the edge.

[0009] Further, the pushing speed in step S3 is 1-2 mm / s to ensure a smooth cutting surface without burrs.

[0010] Further, in step S4, the edge trimming is performed by using a micro-scissors to trim along the long axis direction of the graft, and the retained width error is ≤0.2 mm.

[0011] The present invention has the following advantages and beneficial effects: Through the width limitation and arc design of the horizontal blade, the instrument can adapt to the anatomical shape of the palatal surface during the cutting process, and the width is controllable, reducing the influence of the operator's subjectivity on the quality of the prepared graft; through the height limitation of the bilateral vertical blades, a stable cutting depth is maintained, significantly improving the thickness uniformity of the graft, and keeping the integrity of the graft edge, avoiding the problems of graft fragmentation or excessive thinness caused by angle deviation or uneven force application in traditional operations, while reducing accidental damage to the deep vascular nerve plexus and reducing the risk of complications such as postoperative bleeding, pain, and delayed donor site healing; And it can achieve the synchronous completion of precise cutting into the epithelial layer and rapid peeling of the connective tissue. The complete cutting of the free gingiva can be completed in a single operation, shortening the operation time compared with the traditional step-by-step operation and reducing the surgical technique sensitivity.

[0012] In addition, the angle design of the tool handle and the cutting part can effectively reduce the obstruction of the cutting path by the dentition, further improving the surgical safety, reducing the excessive dependence on the operator's experience, and potentially increasing the success rate of the operation.

[0013] Finally, the selection of medical-grade materials for the device and the disposable process design simplify the preoperative preparation process while ensuring aseptic safety, meeting the core requirements of efficient and aseptic clinical operations, effectively avoiding cross-infection, providing a more minimally invasive and reliable soft tissue augmentation solution for patients, reducing technical sensitivity, promoting the soft tissue augmentation technology in primary medical institutions, and benefiting more patients. Description of the Drawings

[0014] The present invention will be further described below in conjunction with the drawings and embodiments: Figure 1 It is a side view of the preparation tool in this embodiment; Figure 2 It is a front view of the preparation tool in this embodiment; Figure 3 It is a front view of the head cutting device in this embodiment. Detailed Embodiments

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The present invention is not limited to the following embodiments.

[0016] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0017] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, then such descriptions of "first" or "second" etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0018] Such as Figures 1 to 3As shown in the figure, this embodiment discloses a convenient tool for obtaining palatal free gingiva, which includes a disposable handle 1 and a head cutting device 2. The disposable handle 1 is fixed to the head cutting device 2 through a rigid connecting piece, and an included angle α of 75°-85° is formed between the two, and the included angle α is preferably 80°; the disposable handle 1 is injection-molded from medical-grade polycarbonate, with anti-slip patterns 11 on the surface. The total length of the disposable handle 1 is 120 mm, the diameter is 8 mm, and the end is integrally connected to the head cutting device 2; The head cutting device 2 is composed of a collection channel 22 made of medical-grade polycarbonate and a cutting module 21 made of medical stainless steel. The collection channel 22 is arranged behind the cutting module 21. The cutting module 21 forms an 80° angle with the disposable handle 1, and the overall length is 10 mm; The cutting module 21 includes a horizontal blade 211 and bilateral vertical blades 212. The horizontal blade 211 is used to horizontally cut the palatal mucosal epithelium, and the bilateral vertical blades 212 vertically cut into the submucosa from both sides of the horizontal incision to define the thickness of the graft; The collection channel 22 is a funnel-shaped opening structure with an adjustable width of 5-12 mm and a height of about 10 mm. The inner wall is covered with a medical silicone gasket to prevent the graft from adhering. The front end of the collection channel 22 is connected to the cutting module 21, and the rear end is open to temporarily store the cut strip-shaped free gingival graft; there is an arc transition between the bottom edge of the collection channel 22 and the horizontal blade 211, and the radian cutting angle θ is 15°.

[0019] Furthermore, the horizontal blade 211 includes four width options of 4 mm, 6 mm, 8 mm, and 10 mm, and the bilateral vertical blades 212 include two height options of 1.5 mm and 1.8 mm. The vertical blades 212 are connected to the horizontal blade 211 at an included angle β of 90°, and the blade surfaces of the vertical blades 212 and the horizontal blade 211 are polished.

[0020] Furthermore, the width of the collection channel 22 is slightly larger than the width of the horizontal blade 211, and the thickness of the medical silicone gasket is 0.5 mm.

[0021] In this embodiment, the material of the disposable handle 1 passes the ISO10993 biocompatibility certification, and the stainless steel parts of the head meet the YY / T0149 surgical instrument corrosion resistance standard.

[0022] This embodiment also provides a method for using the above-mentioned convenient tool for obtaining palatal free gingiva, which includes the following steps: S1. Select the appropriate specification of the horizontal blade 211 according to the width of the keratinized gingiva defect; S2. Adjust the blade direction to face the pharynx, gently press and cut in from the starting point of the palatal mucosa in the anterior tooth area, and keep the disposable handle 1 parallel to the palatal midline; S3. Push the tool backward at a uniform speed. While the horizontal blade 211 cuts through the epithelial layer, the bilateral vertical blades 212 simultaneously cut downward to a preset thickness. S4. After the cutting is completed, the strip-shaped free gingival graft completely enters the collection channel 22. Use forceps to pick up the graft and trim the edges.

[0023] Further, in step S3, the pushing speed is 1 - 2 mm / s to ensure that the cutting surface is smooth and free of burrs.

[0024] Further, in step S4, when trimming the edges, use a micro-scissors to trim along the long axis direction of the graft, and the retained width error is ≤ 0.2 mm.

[0025] The above content described in this specification is only an example of the present invention. Those skilled in the art of the present invention can make various modifications, supplements, or use similar methods to replace the described specific embodiments, as long as they do not deviate from the content of this specification or exceed the scope defined by this claims, they should fall within the protection scope of the present invention.

Claims

1. A convenient tool for preparing palatal free gingiva, characterized in that, It includes a disposable handle (1) and a head cutting device (2), and the disposable handle (1) is rigidly connected to the head cutting device (2). The head cutting device (2) includes a cutting module (21) and a collection channel (22), and the collection channel (22) is arranged behind the cutting module (21). The cutting module (21) includes a horizontal blade (211) for horizontally cutting the palatal mucosal epithelium and vertical blades (212) for vertically cutting into the submucosa on both sides of the horizontal incision to define the thickness of the graft bilaterally. The collection channel (22) has a funnel-shaped opening, and the inner wall is covered with a medical silicone gasket. There is an arc transition between the bottom edge of the collection channel (22) and the horizontal blade (211).

2. The palatal free gingiva convenient preparation tool according to claim 1, wherein The surface of the disposable handle (1) is provided with anti-slip patterns (11). The total length of the disposable handle (1) is 120 mm, the diameter is 8 mm, and the end is integrally connected to the head cutting device (2).

3. The palatal free gingiva convenient preparation tool according to claim 1, wherein The width of the horizontal blade (211) is 4 mm to 10 mm, the height of the bilateral vertical blades (212) is 1.5 mm to 1.8 mm. The vertical blades (212) are connected to the horizontal blade (211) at an angle β of 90°, and the blade surfaces of the vertical blades (212) and the horizontal blade (211) are polished.

4. The palatal free gingiva convenient preparation tool according to claim 1, characterized in that The width of the collection channel (22) is greater than the width of the horizontal blade (211), and the height of the collection channel (22) is 10 mm.

5. A method for using the convenient palatal free gingiva preparation tool according to any one of claims 1-4, characterized in that, The usage method includes the following steps: S1. Select the appropriate specification of the horizontal blade (211) according to the width of the keratinized gingiva defect. S2. Adjust the blade direction towards the pharynx, gently press and cut from the starting point of the palatal mucosa on the palatal side of the anterior teeth area, and keep the disposable handle (1) parallel to the palatal midline. S3. Push the tool backward at a constant speed. While the horizontal blade (211) cuts the epithelium, the bilateral vertical blades (212) simultaneously cut down to the preset thickness. S4. After cutting, the strip-shaped free gingival graft completely enters the collection channel (22), and use forceps to pick up the graft and trim the edge.

6. The method of using the convenient palatal free gingiva preparation tool according to claim 5, characterized in that, In step S3, the pushing speed is 1 - 2 mm / s to ensure that the cutting surface is smooth and free of burrs.

7. The method of using the convenient palatal free gingiva preparation tool according to claim 5, characterized in that, In step S4, the edge trimming is performed by using a micro-scissors to trim along the long axis direction of the graft, and the retained width error is ≤0.2 mm.

Images