阅读说明：本技术 一种上颌Le Fort I型骨切开术专用把持钳及其使用方法 (Special holding forceps for Le Fort I type maxillary osteotomy and using method thereof ) 是由 吴国民 陈楷 张明君 王琳 谢昆鹏 李男男 倪世磊 庞婉毓 胡向锦 于 2021-08-23 设计创作，主要内容包括：本发明提供了一种上颌Le Fort I型骨切开术专用把持钳,属于临床医学技术领域；上颌Le Fort I型骨切开术专用把持钳由上部钳体、下部钳体、个性化板组成；上部钳体与下部钳体之间交叉并通过销轴活动连接,可上下张闭调整高度。下部可调节钳合与下部弓形钳喙间由内陷螺丝连接,可左右张闭调整宽度。个性化板由侧面凹陷结构与下部可调节钳合的侧面凸出结构插接。术中使用时,当上颌骨段被折断后,利用上部钳体的前端分叉钳合接触鼻底骨组织,调整下部可调节钳合适应不同的牙弓宽度后精准接触上颌牙列,手把持上下部钳柄,松动和牵出上颌骨段。本发明的骨切开术专用把持钳保护了硬腭软组织及粘膜进而减少了术中损伤,并实现了精准稳定夹持上颌骨段。(The invention provides a holding forceps special for an Le Fort I type maxillary osteotomy, belonging to the technical field of clinical medicine; the special holding forceps for the Le Fort I type osteotomy of the upper jaw consists of an upper forceps body, a lower forceps body and a personalized plate; the upper clamp body and the lower clamp body are crossed and movably connected through a pin shaft, and the height can be adjusted by opening and closing up and down. The lower part of the adjustable clamp is connected with the lower part of the arched clamp beak through an invagination screw, and the width can be adjusted by opening and closing left and right. The personalized board is inserted and connected with the side surface protruding structure of the lower adjustable clamping device through the side surface recessed structure. When the forceps are used in the operation, after the maxillary bone segment is broken, the front end of the upper forceps body is used for forked forceps to contact the bone tissue at the bottom of the nose, the lower adjustable forceps is adjusted to adapt to the different widths of dental arches and then accurately contact the maxillary dentition, and the upper and lower forceps handles are held by the handles to loosen and pull out the maxillary bone segment. The special holding forceps for osteotomy of the invention protects the soft tissue and mucosa of hard palate so as to reduce the injury in the operation and realize accurate and stable clamping of the maxillary bone segment.)

1. The special holding forceps for the Le Fort I-shaped maxillary osteotomy are characterized by comprising an upper forceps body (1), a lower forceps body (2) and a personalized plate (3), wherein the upper forceps body (1) and the lower forceps body (2) are crossed and movably connected together through a shaft pin, and the height can be adjusted by opening and closing up and down;

the upper clamp body (1) consists of an upper clamp handle (6) and an upper arched clamp beak (8), the front end of the upper clamp handle (6) is connected with the rear end of the upper arched clamp beak (8), and the front end of the upper arched clamp beak (8) is provided with a front-end forked clamp (9);

the lower portion pincers body (2) is by lower part pincers handle (14), the bow-shaped pincers beak of lower part (15) and the adjustable pincers of lower part close (17) and constitute, and the bow-shaped pincers beak of lower part (15) are bow-shaped, match with upper jaw dental arch shape, and the front end of lower part pincers handle (14) and the bow back department upper surface connection of the bow-shaped pincers beak of lower part (15), and the bow-shaped both ends of the bow-shaped pincers beak of lower part (15) are connected with the adjustable pincers of lower part and close (17), and the lateral surface that the adjustable pincers of lower part closed (17) close is provided with side bulge structure (18), side bulge structure (18) are pegged graft with individualized board (3).

2. The special maxillary Le Fort I-type osteotomy gripping forceps of claim 1, wherein the upper forceps handle (6) is connected with the upper arched forceps beak (8) through a riveting structure (7); the riveting structure (7) is provided with a pin hole for penetrating through a shaft pin to connect the upper clamp body (1) and the lower clamp body (2) together.

3. The special maxillary Le Fort I-type osteotomy gripping forceps as claimed in claim 1, wherein the tail end of the upper forceps handle (6) is integrated with an upper arc-shaped end structure (4) for preventing the upper forceps handle from falling off in use, and the upper forceps handle (6) is further provided with an upper finger-gripping area (5) for improving gripping and comfort.

4. The special holding forceps for maxillary Le Fort I-type osteotomy according to claim 1, wherein the upper arched forceps beak (8) is curved to avoid the upper bone tissue in front of the maxilla and adapt to the anatomical structure of the maxilla.

5. The special maxillary Le Fort I-type osteotomy gripping forceps as claimed in claim 1, wherein the lower functional surface of the front-end forked forceps (9) is provided with a convex structure (10) for adapting to the bone tissue of the nasal floor and increasing the contact area, and the convex structure (10) is of an ellipse-like shape; the protruding structure (10) is provided with a plurality of strip-shaped textures (11) for increasing friction force in the use process, and the interval between the two strip-shaped textures (11) is 1 mm.

6. The special maxillary Le Fort I-type osteotomy gripping forceps of claim 1, wherein the tail end of the lower forceps handle (14) is integrated with a lower arc-shaped end structure (12) for preventing falling off in use; the lower forceps handle (14) is also provided with a lower finger gripping area (13) with a concave shape of other fingers except the thumb, and the finger pulp of the index finger, the middle finger, the ring finger and the little finger is gripped when in use, thereby increasing the gripping and the comfort.

7. The special holding forceps for maxillary Le Fort I-type osteotomy as defined in claim 1, wherein the arched two ends of the lower arched forceps beak (15) are fixedly connected with the lower adjustable forceps (17) through a concave screw (16).

8. The special holding forceps for the Le Fort I type maxillary osteotomy as claimed in claim 1, wherein the personalized plate (3) is of an overall long circular three-dimensional structure, the upper surface is provided with a personalized groove (19), the shape of the groove is matched with the maxillary molar region of a patient, the direct contact with the hard palate soft tissue and mucosa at the lower part of the maxillary bone is avoided during operation, and the special holding forceps are matched with the anatomical structures of the fossa, sulcus, point, gap and cusp of the molar surfaces at the left and right sides of the maxillary of the patient, so as to ensure the stable contact with the molar; the outer side of the long side of the personalized plate (3) is provided with a side concave structure (20) which is inserted with a side convex structure (18) of the lower clamp body (2).

9. The special maxillary Le Fort I-type osteotomy gripping forceps of claim 1, wherein the upper forceps body (1) and the lower forceps body (2) are both made of medical stainless steel, and the personalized plate (3) is made of self-setting plastic room temperature curing methyl methacrylate.

10. The use method of the special holding forceps for the Le Fort I type maxillary osteotomy as claimed in claim 1, which is characterized by comprising the following steps:

the method comprises the following steps: firstly, two personalized plates (3) are manufactured by utilizing self-setting plastics according to the left and right side tooth grinding areas of the upper jaw of a patient, and personalized grooves (19) on the personalized plates (3) are manufactured according to the anatomical structures of the left and right side tooth grinding surface pits, grooves, points, gaps and cusps of the upper jaw of the patient, so that when the dental plate is used in an operation, the personalized plates (3) can be stably and accurately contacted with the upper jaw dentition;

step two: the position of a side concave structure (20) of the personalized plate (3) is designed according to the distance between the molar zones on the left side and the right side of the upper jaw and the central line, so that the personalized plate (3) is stably connected with a side convex structure (18) when the personalized plate is used in an operation;

step three: in the operation, after the maxilla section is broken, firstly inserting a side concave structure (20) of a personalized plate (3) and a side convex structure (18), adjusting the opening degree between an upper forceps body (1) and a lower forceps body (2), placing a front-end forked forceps closure (9) on the nasal floor bone tissue of a patient, and utilizing a convex structure (10) of the front-end forked forceps closure (9) and a strip-shaped texture (11) on the surface of the convex structure (10) to adapt to the nasal floor bone tissue and increase the contact area and the friction force;

step four: the internal concave screw (16) is unscrewed to adjust the tightness between the lower adjustable clamping part (17) and the lower arched clamp beak (15), and after the opening degree of the lower adjustable clamping part (17) is adjusted to a proper position, the internal concave screw (16) is screwed to fix the lower adjustable clamping part (17) and ensure that the internal concave screw is adaptive to the width of the dental arch of a patient; and then adjusting the opening degree between the upper forceps body (1) and the lower forceps body (2) to enable the personalized grooves (19) of the personalized plate (3) to be in contact with anatomical structures of the fossa, sulcus, point, gap and cusp of the molar surfaces on the left side and the right side of the upper jaw of the patient.

Step five: the upper forceps handle (6) and the lower forceps handle (14) are held by hands, and the maxillary segments are shaken downwards, forwards, left and right, so that the maxillary segments are completely dissociated and successfully pulled out.

Technical Field

The invention belongs to the technical field of clinical medicine, and particularly relates to a holding forceps special for an Le Fort I type maxillary osteotomy and a using method thereof.

Background

Maxillary Le Fort type I osteotomy is one of the most commonly used surgical procedures in orthognathic surgery, and has the function of correcting deformity occurring in a plurality of spatial directions such as the vertical, horizontal, anterior-posterior direction and the like of the maxilla. A prerequisite for successful surgery is the need to break the maxillary segments and then release them thoroughly. However, in the current operation, the release process can be completed only by directly contacting the maxillary hard palate mucosa through a maxillary special holding forceps. If the user holds the soft tissue and the mucosa of the hard palate to an excessive force in the using process, contusion and laceration or other injuries can be caused to a certain extent; if the holding force is too small, the contact part with the human body will slip. The above concepts are not in accordance with the minimally invasive and precise concepts in the medical field. Therefore, how to completely loosen and pull out the maxillary bone segment under the premise of protecting the hard palate mucosa and the soft tissue and ensuring the firm and stable contact with the maxillary bone segment is a difficult problem which troubles clinicians at the present stage.

Disclosure of Invention

The invention aims to provide a holding forceps special for an Le Fort I type maxillary osteotomy and a using method thereof, which are used for solving the problem that after a maxillary bone segment is broken, the maxillary bone segment is thoroughly loosened and pulled out by non-invasive and accurate holding on the premise of protecting hard palate mucosa and soft tissue and ensuring firm and stable contact with the maxillary bone segment.

The invention is realized by the following technical scheme:

a special holding forceps for an Le Fort I-shaped maxillary osteotomy comprises an upper forceps body 1, a lower forceps body 2 and a personalized plate 3, wherein the upper forceps body 1 and the lower forceps body 2 are crossed and movably connected together through a shaft pin, and the height can be adjusted by opening and closing the upper opening and the lower opening;

the upper clamp body 1 consists of an upper clamp handle 6 and an upper arched clamp beak 8, the front end of the upper clamp handle 6 is connected with the upper arched clamp beak 8, and the front end of the upper arched clamp beak 8 is provided with a front-end forked clamp 9;

the lower forceps body 2 is composed of a lower forceps handle 14, a lower arched forceps beak 15 and a lower adjustable forceps closure 17, the lower arched forceps beak 15 is arched and matched with the upper jaw arch in shape, the front end of the lower forceps handle 14 is connected with the upper surface of the arch back of the lower arched forceps beak 15, the lower adjustable forceps closure 17 is connected with the arched two ends of the lower arched forceps beak 15, a side protruding structure 18 is arranged on the outer side surface of the lower adjustable forceps closure 17, and the side protruding structure 18 is connected with the personalized plate 3 in an inserting mode.

Further, the upper tong handle 6 is connected with an upper arched tong beak 8 through a riveting structure 7; the riveting structure 7 is provided with a pin hole for connecting the upper clamp body 1 and the lower clamp body 2 together through a pin shaft.

Furthermore, an upper arc-shaped tail end structure 4 is integrated at the tail end of the upper clamp handle 6 and used for preventing the falling off in use, and an upper finger holding area 5 is further arranged on the upper clamp handle 6 and used for increasing holding and comfort.

Furthermore, the upper arched forceps beak 8 is in a curved arc shape and is used for avoiding the bone tissue of the upper front part of the maxilla and adapting to the anatomical structure of the maxilla.

Furthermore, the lower functional surface of the front-end bifurcated clamp 9 is designed into a convex structure 10 to adapt to the bone tissue of the nasal floor and increase the contact area, and the convex structure 10 is similar to an ellipse; the projection structure 10 is provided with a plurality of bar-shaped textures 11 for increasing friction force during use, and the interval between two bar-shaped textures 11 is 1 mm.

Further, a lower arc-shaped end structure 12 is integrated at the tail end of the lower forceps handle 14 and is used for preventing falling off in use; the lower handle 14 is provided with a lower finger grip area 13 having a concave shape for fingers other than the thumb, and the abdomen of the index finger, middle finger, ring finger, and small finger is gripped for use, thereby increasing gripping and comfort.

Further, the other end of the lower arched forceps beak 15 is fixedly connected with a lower adjustable forceps 17 through a concave screw 16.

Furthermore, the whole personalized plate 3 is of an oblong three-dimensional structure, the upper surface of the personalized plate is provided with a personalized groove 19, the shape of the groove is matched with the upper jaw molar region of a patient, the groove is prevented from being directly contacted with the hard palate soft tissue and mucosa at the lower part of the upper jaw during operation, and the groove is accurately matched with anatomical structures such as fossae, sulcus, points, gaps, cusps and the like of the molar surface at the left side and the right side of the upper jaw of the patient, so that stable and accurate contact with molar is ensured; the outer side of the long side of the personalized board 3 is provided with a side concave structure 20 which is inserted with the side convex structure 18 of the lower clamp body 2.

Further, the upper forceps body 1 and the lower forceps body 2 are both made of medical stainless steel, and the personalized board 3 is made of self-solidifying plastic (room temperature solidifying type methyl methacrylate).

The invention also aims to provide a using method of the special holding forceps for the Le Fort I type maxillary osteotomy, which comprises the following steps:

the method comprises the following steps: firstly, two personalized plates 3 are manufactured by utilizing self-setting plastics according to the left and right side molar areas of the upper jaw of a patient, and personalized grooves 19 on the personalized plates 3 are manufactured according to the fossa, sulcus, point, gap and cusp anatomical structures of the left and right side molar surfaces of the upper jaw of the patient, so that when the personalized plates 3 are used in an operation, the personalized plates 3 can be stably and accurately contacted with the upper jaw dentition;

step two: the position of the side surface concave structure 20 of the personalized plate 3 is designed according to the distance between the molar areas on the left side and the right side of the upper jaw and the central line, so that the personalized plate 3 is stably connected with the side surface convex structure 18 when the personalized plate is used in the operation;

step three: in operation, after the maxilla segment is broken, firstly inserting a side concave structure 20 and a side convex structure 18 of a personalized plate 3, adjusting the opening degree between an upper forceps body 1 and a lower forceps body 2, placing a front-end forked forceps 9 on the nasal floor bone tissue of a patient, and adapting to the nasal floor bone tissue and increasing the contact area and the friction force by using a convex structure 10 of the front-end forked forceps 9 and strip-shaped textures 11 on the surface of the convex structure 10;

step four: the concave screw 16 is unscrewed to adjust the tightness between the lower adjustable clamping part 17 and the lower arched clamp beak 15, and after the opening degree of the lower adjustable clamping part 17 is adjusted to a proper position, the concave screw 16 is screwed down to fix the lower adjustable clamping part 17 so as to ensure that the lower adjustable clamping part 17 is adapted to the width of the dental arch of a patient; then the opening degree between the upper forceps body 1 and the lower forceps body 2 is adjusted, so that the personalized grooves 19 of the personalized plate 3 are contacted with the anatomical structures of the fossa, sulcus, point, gap and tip of the molar surfaces on the left side and the right side of the upper jaw of the patient.

Step five: the upper and lower handles 6, 14 are held by hand and the maxillary segments are rocked downward, forward, left and right, so that the maxillary segments are completely free and successfully pulled out.

Compared with the prior art, the invention has the following advantages:

the invention relates to a special holding forceps for an Le Fort I type maxillary osteotomy and a using method thereof, which solve the technical problem of thoroughly loosening and pulling out a maxillary bone segment on the premise of protecting hard palate mucosa and soft tissues and ensuring firm, stable and accurate contact with the maxillary bone segment. Firstly, the anterior bifurcation forceps with a convex structure and strip-shaped textures, which is designed for adapting to the nasal floor bone tissues and increasing the contact area and the friction force, is used in the operation to stably and firmly clamp the nasal floor bone tissues on the maxilla. Then, the personalized plates which are precisely matched with anatomical structures such as a maxillary facial fossa, a sulcus, a point, a gap, a point and the like on the left side and the right side of the upper jaw of the patient are utilized to stably and precisely clamp the molar teeth below the upper jaw, so that the direct contact of the instruments and the hard palate soft tissue and mucosa on the lower part of the upper jaw at the current stage is avoided. Protects the soft tissues and mucosa of the hard palate so as to reduce the injury in the operation, accurately clamps the maxillary bone segment, and finally successfully finishes the complete loosening and pulling out of the maxillary bone.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1: the three-dimensional structure schematic diagram of the upper forceps body 1, the lower forceps body 2 and the personalized plate 3 of the main body part of the special maxillary Le Fort I-type osteotomy forceps in the embodiment 1 of the invention

FIG. 2: the three-dimensional structure of the upper clamp body 1 of the main body part of the special maxillary Le Fort I-type osteotomy forceps in embodiment 1 of the invention is schematically shown

FIG. 3: the three-dimensional structure of the lower forceps body 2 of the main body part of the special maxillary Le Fort I-type osteotomy forceps in embodiment 1 of the invention is schematically shown

FIG. 4: the three-dimensional structure of the personalized plate 3 of the main body part of the gripping forceps special for the Le Fort I type maxillary osteotomy in the embodiment 1 of the invention is schematically shown

FIG. 5: the invention embodiment 1 said maxilla Le Fort I type osteotomy special use hold the side view of the pincers;

FIG. 6: the invention embodiment 1 described in the maxilla Le Fort I type osteotomy special use forceps plan view

The names of the parts in the figure are: the special clamp comprises an upper clamp body 1, a lower clamp body 2, a personalized plate 3, an upper arc-shaped tail end structure 4, an upper finger holding area 5, an upper clamp handle 6, a riveting structure 7, an upper arched clamp beak 8, a front-end forked clamp 9, a protruding structure 10, a strip-shaped texture 11, a lower arc-shaped tail end structure 12, a lower finger holding area 13, a lower clamp handle 14, a lower arched clamp beak 15, an inward-concave screw 16, a lower adjustable clamp 17, a side protruding structure 18, a personalized groove 19 and a side recessed structure 20.

Detailed Description

For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Example 1

The main body part of the special holding forceps for the Le Fort I-type maxillary osteotomy in the embodiment consists of an upper forceps body 1, a lower forceps body 2 and a personalized plate 3, wherein the upper forceps body 1 and the lower forceps body 2 are movably connected together through a shaft pin;

the upper pliers body 1 consists of an upper arc-shaped tail end structure 4, an upper finger holding area 5, an upper pliers handle 6, a riveting structure 7, an upper arched pliers beak 8 and a front-end forked pliers joint 9; the tail end of the upper forceps handle 6 is integrated with an upper arc-shaped tail end structure 4 to prevent falling off when in use; the outer side surface of the upper forceps handle 6 is provided with an upper finger holding area 5 with a thumb concave shape for increasing holding and comfort; the upper arched forceps beak 8 is in a curved arc shape and is used for avoiding the bone tissue of the upper front part of the maxilla and adapting to the anatomical structure of the maxilla; the front end of the upper tong handle 6 is connected with an upper arched tong beak 8 through a riveting structure 7, and the riveting structure 7 is provided with a pin hole for connecting the upper tong body 1 and the lower tong body 2 together through a pin; the front end of the upper arched forceps beak 8 is provided with a front-end forked forceps 9; the lower functional surface of the front-end bifurcated clamp 9 is designed into a convex structure 10 to adapt to the bone tissue of the nasal floor and increase the contact area, the surface of the convex structure 10 is provided with a plurality of strip-shaped textures 11, and the interval between the two strip-shaped textures 11 is 1mm, so that the friction force is increased in the use process;

the lower clamp body 2 consists of a lower arc-shaped tail end structure 12, a lower finger holding area 13, a lower clamp handle 14, a lower arc-shaped clamp beak 15, an inward concave screw 16 and a lower adjustable clamp 17; the tail end of the lower forceps handle 14 is integrated with a lower arc-shaped tail end structure 12 for preventing falling off in use; the lower handle 14 is provided with a lower finger grip area 13 having a concave shape for fingers other than the thumb, and the abdomen of the index finger, middle finger, ring finger, and small finger is gripped for use, thereby increasing gripping and comfort. The lower arched forceps beak 15 is arched and is matched with the maxillary dental arch in shape, the front end of the lower forceps handle 14 is connected with the upper surface of the arch back of the lower arched forceps beak 15, the arched two ends of the lower arched forceps beak 15 are connected with a lower adjustable forceps 17 through concave screws 16, the outer side surface of the lower adjustable forceps 17 is provided with a side surface convex structure 18, and the side surface convex structure 18 is spliced with the personalized plate 3;

the personalized plate 3 is integrally in an oblong three-dimensional structure, the personalized groove 19 is formed in the upper surface of the personalized plate, the shape of the groove is matched with the upper jaw molar area of a patient, the groove is prevented from being directly contacted with the hard palate soft tissue and mucosa at the lower part of the upper jaw during operation, the groove is precisely matched with anatomical structures such as the fossa, the groove, the point, the gap, the tip and the like of the molar surface at the left side and the right side of the upper jaw of the patient, and stable and precise contact with molar is guaranteed; the lateral surface of the long side of the personalized plate 3 is provided with a lateral concave structure 20 which is inserted with a lateral convex structure 18 of the lower clamp body 2; the position of the side concave structure 20 can move in the up-down and front-back directions of the personalized plate 3, and when the position of the side concave structure 20 is designed before an operation, fine adjustment can be carried out according to the distance centerline positions of the molar regions on the left side and the right side of the upper jaw of different patients.

The use process of the special holding forceps for the maxillary Le Fort I-type osteotomy in the embodiment is as follows:

when the dental implant is used, firstly, the self-setting plastics are utilized to manufacture two personalized plates 3 according to the left and right sides of the upper jaw of a patient, and the personalized grooves 19 on the personalized plates 3 are manufactured according to anatomical structures such as the dentofacial pits, grooves, points, gaps, cusps and the like on the left and right sides of the upper jaw of the patient, so that the personalized plates 3 can be stably and accurately contacted with the upper jaw dentition when the dental implant is used in an operation. Then, the position of the side concave structure 20 of the personalized plate 3 is designed according to the distance between the molar areas on the left side and the right side of the upper jaw and the central line, so that the personalized plate 3 can be smoothly and stably connected with the side convex structure 18 when the personalized plate is used in an operation. In operation, after the maxillary segment is fractured, the personalized plate 3 is first stably connected to the lateral protrusion structure 18. The opening degree between the upper forceps body 1 and the lower forceps body 2 is adjusted, the front-end forked forceps 9 is placed on the nasal floor bone tissue of a patient, and a protruding structure 10 and strip-shaped textures 11 designed below the front-end forked forceps 9 are used for adapting to the nasal floor bone tissue and increasing the contact area and the friction force. Then, the inwards concave screw 16 is unscrewed to adjust the tightness between the lower adjustable clamping part 17 and the lower arched clamp beak 15, and after the opening degree of the lower adjustable clamping part 17 is adjusted to a proper position, the inwards concave screw 16 is screwed down to fix the lower adjustable clamping part 17 to ensure that the lower adjustable clamping part 17 is adaptive to the width of the dental arch of the patient. Then slightly adjusting the opening degree between the upper forceps body 1 and the lower forceps body 2, so that the personalized grooves 19 on the personalized plate 3 are stably and accurately contacted with anatomical structures such as the molar facial sockets, grooves, points, gaps, tips and the like on the left side and the right side of the upper jaw of the patient. The upper and lower handles 6, 14 are held by hand and the maxillary segments are rocked downward, forward, left and right, so that the maxillary segments are completely dissociated and successfully pulled out. Under the premise of protecting the soft tissue and mucosa of the hard palate, the invention stably and accurately clamps the maxilla segment, and further successfully loosens and draws out the maxilla segment.

The upper forceps body 1 and the lower forceps body 2 of the main part of the special holding forceps for the Le Fort I-type osteotomy of the upper jaw are made of medical stainless steel materials, so that the special holding forceps has high strength, is not easy to deform, has strong corrosion resistance and is not easy to corrode by body fluid. The personalized plate 3 is made of self-setting plastics, the material has good fluidity at the initial stage of manufacture, can completely match anatomical structures such as dentures, grooves, points, gaps, tips and the like of the tooth surface, has high hardness and strength after successful manufacture, and can ensure stable and accurate contact with dentitions when used in an operation. After the maxillary segment was successfully loosened and pulled out, the device was removed. The upper forceps body 1 and the lower forceps body 2 of the main body part can be repeatedly used after being cleaned, sterilized and autoclaved, and the personalized plate 3 is specially manufactured according to different patients each time, so that the disposable forceps body is required to be disposable.

Example 2

The size parameters of the special holding forceps for the Le Fort I type maxillary osteotomy are as follows:

the total length of the upper pliers body 1 is 300mm, the cross section of the upper pliers body is approximately rectangular, the length of the upper pliers body is 20mm, the width of the upper pliers body is 10mm, the length of the upper pliers handle 6 is approximately 200mm, the diameter of the upper arched pliers beak 8 is 100mm, the length of the front-end forked pliers 9 is 10mm, and the width of the upper pliers body is 5 mm. 4 radians of the upper portion arc end structure of 6 tail end designs of upper portion pincers handles are 180 degrees, and the external diameter 20mm, and the internal diameter is 10mm, and the length of the upper portion finger grip area 5 that has the sunken shape of thumb is 30mm, and protruding structure 10 that front end branching pincers close 9 below functional surface design becomes is similar oval, designs a texture of strip texture 11 every interval 1mm design.

The length of the lower pliers body 2 is 300mm, the radian of a 12-degree tail end structure of the lower arc-shaped tail end structure is 180 degrees, the outer diameter is 20mm, the inner diameter is 10mm, and the length of a lower finger holding area 13 with the shape of a concave finger except the thumb is 69 mm. The length of the lower arched forceps beak 15 is 70mm, and the distance between the arched forceps beaks 15 on the left side and the right side is about 37 mm. The length of the lower adjustable clamping joint 17 is 28 mm. The length and width of the side surface protruding structure 18 are both 8mm, and the thickness is 5 mm. The personalized board 3 has an overall length of 25mm, a width of 15mm and a thickness of 10 mm. The personalized groove 19 is designed to have a width and a length according to dentition and a depth of 3 mm. The side concave structure 20 is 8mm long, 5mm high and 8mm deep.

Example 3

The embodiment provides a using method of a special holding forceps for an Le Fort I type maxillary osteotomy, which specifically comprises the following steps:

the method comprises the following steps: firstly, two personalized plates 3 are manufactured by utilizing self-setting plastics according to the left and right side molar areas of the upper jaw of a patient, and personalized grooves 19 on the personalized plates 3 are manufactured according to the fossa, sulcus, point, gap and cusp anatomical structures of the left and right side molar surfaces of the upper jaw of the patient, so that when the personalized plates 3 are used in an operation, the personalized plates 3 can be stably and accurately contacted with the upper jaw dentition;

step two: the position of the side surface concave structure 20 of the personalized plate 3 is designed according to the distance between the molar areas on the left side and the right side of the upper jaw and the central line, so that the personalized plate 3 is stably connected with the side surface convex structure 18 when the personalized plate is used in the operation;

step three: in operation, after the maxilla segment is broken, firstly inserting a side concave structure 20 and a side convex structure 18 of a personalized plate 3, adjusting the opening degree between an upper forceps body 1 and a lower forceps body 2, placing a front-end forked forceps closure 9 on the nasal floor bone tissue of a patient, and adapting to the nasal floor bone tissue and increasing the contact area and the friction force by utilizing a convex structure 10 of a functional surface below the front-end forked forceps closure 9 and strip-shaped textures 11 on the surface of the convex structure 10;

step four: the concave screw 16 is unscrewed to adjust the tightness between the lower adjustable clamping part 17 and the lower arched clamp beak 15, and after the opening degree of the lower adjustable clamping part 17 is adjusted to a proper position, the concave screw 16 is screwed down to fix the lower adjustable clamping part 17 so as to ensure that the lower adjustable clamping part 17 is adapted to the width of the dental arch of a patient; then the opening degree between the upper forceps body 1 and the lower forceps body 2 is adjusted, so that the personalized grooves 19 of the personalized plate 3 are contacted with the anatomical structures of the fossa, sulcus, point, gap and tip of the molar surfaces on the left side and the right side of the upper jaw of the patient.

Step five: the upper and lower handles 6, 14 are held by hand and the maxillary segments are rocked downward, forward, left and right, so that the maxillary segments are completely free and successfully pulled out.

The upper forceps body 1 and the lower forceps body 2 of the main part of the special holding forceps for the Le Fort I-type osteotomy of the upper jaw are made of medical stainless steel materials, so that the special holding forceps has high strength, is not easy to deform, has strong corrosion resistance and is not easy to corrode by body fluid. The personalized plate 3 is made of self-setting plastics, the material has good fluidity at the initial stage of manufacture, can completely match anatomical structures such as dentures, grooves, points, gaps, tips and the like of the tooth surface, has high hardness and strength after successful manufacture, and can ensure stable and accurate contact with dentitions when used in an operation. After the maxillary segment was successfully loosened and pulled out, the device was removed. The upper forceps body 1 and the lower forceps body 2 of the main body part can be repeatedly used after being cleaned, sterilized and autoclaved, and the personalized plate 3 is specially manufactured according to different patients each time, so that the disposable forceps body is required to be disposable.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.