Tractor for oral and maxillofacial surgery

Abstract

The invention provides a tractor for oral and maxillofacial surgery, and belongs to the technical field of tractors for opening surgical wounds. Comprising a traction framework, traction hooks are installed on the two sides of the traction framework, second inserting pieces are installed on the two sides of the traction framework, connecting blocks are fixedly connected to the tops of the second inserting pieces, end blocks are fixedly connected to the tops of the connecting blocks, and a first concave part is formed in the traction framework; and the soft tissue traction auxiliary mechanism is used for assisting the operation of the soft tissue surgery. The soft tissue traction auxiliary mechanism is arranged, the traction framework and the traction hooks are used in cooperation, when a wound is opened, the lips, the upper jaw and the lower jaw of a patient can be well supported, stress is uniform, and therefore the patient does not have strong discomfort, and the patient can be prevented from being injured. And furthermore, surgical wounds with maxillofacial fractures and soft tissue injuries can be better opened.

Description

Technical Field

[0001] The invention relates to the technical field of traction devices for opening surgical wounds, and in particular to a traction device for oral and maxillofacial surgery. Background Art

[0002] Oral and maxillofacial surgery is a discipline that focuses on surgical treatment and the prevention and treatment of certain diseases related to the oral organs, facial soft tissues, maxillofacial bones, temporomandibular joints, salivary glands, and neck. As a medical specialty, it has dual attributes. It is not only an important part of stomatology, but also an important branch of clinical medicine. Therefore, medical devices used in dentistry and surgery are used in oral and maxillofacial surgery.

[0003] The repair of maxillofacial fractures and soft tissue injuries requires the use of surgical instruments to expose the wound in order to increase the operable space for surgery and facilitate the surgical operation of medical staff. However, existing maxillofacial fracture and soft tissue injury surgical wound opening instruments generally use surgical retractors to open the opening. Under normal circumstances, surgical retractors can be used to expose the surgical field of view, fix soft tissue, reduce tissue damage and assist in surgical operations. However, there are certain limitations for the repair of maxillofacial fractures and soft tissue injuries. For example, when opening the patient's lips, the retractor can only pull the patient's upper lip or lower lip to one side, resulting in the pulling force on the lips being concentrated on a point close to the retractor, causing discomfort to the patient, and the wound field of view is also difficult to be fully exposed, thereby facilitating the repair of maxillofacial fractures and soft tissue injuries. Therefore, the present application provides a traction device for oral and maxillofacial surgery to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a traction device for oral and maxillofacial surgery. By setting a soft tissue traction auxiliary mechanism and using a traction frame and a traction hook in combination, when opening the wound, the patient's lips, upper jaw and lower jaw can be well supported, and the force is relatively uniform, so that the patient will not feel strong discomfort, and the surgical wounds of maxillofacial fractures and soft tissue injuries can be better opened. The above settings can solve the problem that the existing device cannot expose the surgical field well when opening the wound and causes the patient to feel strong discomfort.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A traction device for oral and maxillofacial surgery comprises a traction frame, traction hooks are installed on both sides of the traction frame, second plugs are installed on both sides of the traction frame, a connecting block is fixedly connected to the top of the second plug, an end block is fixedly connected to the top of the connecting block, and a first recess is provided on the traction frame; a soft tissue traction auxiliary mechanism is used to assist soft tissue surgical operations, and the soft tissue traction auxiliary mechanism is connected to the traction frame.

[0007] Optionally, second slots matched with the second plug-in piece are provided on both sides of the traction frame, first slots are provided on the top and bottom of the traction frame, and limiting grooves matched with the shape of the connecting block are provided on both sides of the traction frame.

[0008] Optionally, a mounting groove is provided on the traction hook, wherein a side of the mounting groove close to the end block is narrower, and a side of the mounting groove away from the end block is wider.

[0009] Optionally, a lightweight groove is provided on the traction hook, and a soft tissue pressing piece is fixedly connected to a side of the traction hook close to the end block.

[0010] Optionally, a third weakened portion is provided on the soft tissue compression piece, and a second recess is provided on the soft tissue compression piece.

[0011] Optionally, the connecting block, the end block and the second plug-in piece are integrally formed, and the connecting block, the end block and the second plug-in piece are all made of plastic material.

[0012] Optionally, a buffer cavity is provided in the end block, and a second weakened portion is provided on the second insert.

[0013] Optionally, the soft tissue pulling auxiliary mechanism comprises a first plug-in piece mounted on the traction frame, one side of the first plug-in piece is fixedly connected to a connecting piece, and a side of the connecting piece away from the first plug-in piece is fixedly connected to a limiting piece.

[0014] Optionally, the shape of the first inserting piece is matched with the shape of the first slot, and the structure formed by the first inserting piece, the connecting piece and the limiting piece is concave.

[0015] Optionally, a fourth weakened portion is provided on the connecting piece, and outer wall edges of the first inserting piece, the connecting piece and the limiting piece are all arc-shaped.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up a soft tissue traction auxiliary mechanism, not only can the traction skeleton be unfolded when the traction hook is pulled, so that the patient's upper and lower lips and upper and lower jaws are opened, thereby well exposing the soft tissue surgical opening, but also when the wound is opened by using the traction skeleton in conjunction with the traction hook, the patient's lips and upper and lower jaws are well supported, and the force is relatively uniform, so that the patient will not feel strong discomfort. In addition, during the surgical operation, the soft tissue traction auxiliary mechanism is used in conjunction with other structures in the device to further open the surgical wounds of maxillofacial fractures and soft tissue injuries better, and maintain a stably opened state during the operation, thereby facilitating the operation of this surgical treatment. In addition, the structure of the device is simple and it is relatively convenient to use.

[0018] By providing a second slot and a limiting slot in the device, not only can the second slot be opened to facilitate installation of the second plug-in piece therein, thereby allowing the connecting block on the top of the second plug-in piece to be quickly connected to the traction frame, but the limiting slot also allows the bottom of the connecting block to be clamped therein, thereby further increasing the stability of the connection between the traction frame and the connecting block, and the coordinated use of the structures effectively makes the use effect of the device better, and the structure is simple and easy to use.

[0019] By providing an installation groove and a lightweight groove in the device, not only can the connection block be installed in the installation groove, so that the connection block and the traction hook are connected together for use, but also the side of the installation groove close to the end block is narrower, and the side of the installation groove away from the end block is wider, which further facilitates the installation of the connection block. The lightweight groove is provided on the traction hook, which reduces the weight of the traction hook and facilitates fixing the side of the traction hook away from the traction frame on the frame of the operating table. The opening of the lightweight groove also increases the anti-slip property of the outer wall of the traction hook, which is also convenient for medical staff to hold and operate. The coordinated use of the structures effectively makes the use effect of the device better, and the structure is simple and easy to use.

[0020] By providing a first plug-in sheet, a connecting sheet and a limiting sheet in the soft tissue traction auxiliary mechanism, not only can the first plug-in sheet be installed in the first slot, but the first plug-in sheet and the connecting sheet and the limiting sheet thereon can be quickly installed on the traction frame for use, and the integrated structure formed by the first plug-in sheet, the connecting sheet and the limiting sheet is arranged on the upper jaw and lower jaw of the patient, so that the teeth and oral mucosa are in contact with the connecting sheet, so that when the traction frame is expanded, the patient's soft tissue hand wound can be better exposed by using the coordinated use of the above structures, thereby facilitating the surgical operation, and the first plug-in sheet, the connecting sheet and the limiting sheet are an integrated structure, the stability of the integrated structure is good, and the coordinated use of the structures effectively makes the use effect of the soft tissue traction auxiliary mechanism better, and the structure is simple and easy to use.

[0021] By providing a fourth weakened portion in the soft tissue traction auxiliary mechanism, not only can the deformation ability of the connecting piece be enhanced, so that the connecting piece is first deformed from the fourth weakened portion under the action of external force, so that the first insert, the connecting piece and the limiting piece can better fit the patient's oral soft tissue, and the coordinated use of the structures effectively makes the use of the soft tissue traction auxiliary mechanism better, and the structure is simple and easy to use.

[0022] To sum up, the device can not only open the soft tissue wound quickly and stably through the coordinated use of the soft tissue traction auxiliary mechanism and the various components therein, but also make the patient's lips and upper and lower jaws bear more evenly when opening the surgical wound, thereby reducing the patient's discomfort during the operation. In addition, the device has a simple structure, is easy and quick to use, has a low production cost, is practical, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of a retractor used in oral and maxillofacial surgery;

[0025] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the traction frame;

[0026] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the end block and the connecting block;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the traction hook;

[0029] Figure 6 This is a schematic diagram of the structure of the traction hook from the first perspective;

[0030] Figure 7 This is a schematic diagram of the structure of a retractor for oral and maxillofacial surgery from the first perspective;

[0031] Figure 8 This is a schematic diagram of the structure of the traction hook from the second perspective;

[0032] Fig. 9 for Figure 8 The enlarged structural diagram at B in the middle;

[0033] Fig.10This is a schematic diagram of the structure of a retractor for oral and maxillofacial surgery from a second perspective;

[0034] Fig.11 for Fig.10 The enlarged structural diagram at C in the middle;

[0035] Fig.12 It is a schematic diagram of the three-dimensional unfolding structure of the traction frame and the first plug piece;

[0036] Fig.13 for Fig.12 The enlarged structural diagram at D in the middle;

[0037] Fig.14 It is a schematic diagram of the three-dimensional structure of the first inserting piece and the limiting piece.

[0038] Reference numerals:

[0039] 1. Traction frame; 2. Connecting block; 3. End block; 4. Traction hook; 5. First plug; 6. Connecting plate; 7. Limiting plate; 8. First recess; 9. First slot; 10. Second slot; 11. First weakened portion; 12. Buffer cavity; 13. Second plug; 14. Second weakened portion; 15. Soft tissue pressing piece; 16. Mounting slot; 17. Lightweight slot; 18. Third weakened portion; 19. Second recess; 20. Fourth weakened portion; 21. Limiting slot; 22. Fifth weakened portion.

[0040] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0041] The following is a detailed description of a retractor for oral and maxillofacial surgery provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0042] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it should be within the knowledge of technicians in the relevant field whether or not such features, structures or characteristics are explicitly described in conjunction with other embodiments.

[0043] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0044] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0045] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0046] like Figures 1 to 3 and Figure 7As shown, an embodiment of the present invention provides a traction device for oral and maxillofacial surgery, comprising a traction frame 1, traction hooks 4 are installed on both sides of the traction frame 1, second plug-in sheets 13 are installed on both sides of the traction frame 1, a connecting block 2 is fixedly connected to the top of the second plug-in sheet 13, and an end block 3 is fixedly connected to the top of the connecting block 2; a soft tissue traction auxiliary mechanism, the soft tissue traction auxiliary mechanism is used to assist soft tissue surgery, the soft tissue traction auxiliary mechanism is connected to the traction frame 1, the shape of the traction frame 1 is adapted to the shape of the patient's lips, and can be well used to open the patient's upper lip and lower lip, The traction skeleton 1 is in a semi-open state when not affected by external force. At this time, the size of the opening is adapted to the size and shape of the natural opening of the patient's upper and lower lips. After the patient's mouth is slightly opened, the traction skeleton 1 is placed in the patient's mouth, and then the traction hook 4 is pulled to unfold the traction skeleton 1, so that the patient's upper and lower lips and the upper and lower jaws are opened, thereby well exposing the soft tissue surgical opening, and when the wound is opened using the traction skeleton 1 in combination with the traction hook 4, the patient's lips and the upper and lower jaws are well supported, and the force is relatively even, so that the patient will not feel strong discomfort.

[0047] And by using the connecting block 2, the end block 3 and the second insert 13, the traction frame 1 and the traction hook 4 can be quickly connected together for use, so that the traction frame 1 and the traction hook 4 are used in combination to completely open the surgical wound of the maxillofacial fracture and soft tissue injury, thereby facilitating the surgical operation, and during the surgical operation, the soft tissue traction auxiliary mechanism is used in combination with other structures in the device to further open the surgical wound of the maxillofacial fracture and soft tissue injury better, and keep a stable open state during the operation, thereby facilitating the operation and use of this surgical treatment, and the device has a simple structure, is relatively convenient to use, and has a low production cost, which is easy to promote and use.

[0048] Furthermore, second slots 10 adapted to the second plug-in piece 13 are provided on both sides of the traction frame 1, first slots 9 are provided on the top and bottom of the traction frame 1, and limiting slots 21 adapted to the shape of the connecting block 2 are provided on both sides of the traction frame 1. The opening of the first slot 9 faces the outside of the traction frame 1, and the openings of the second slot 10 and the limiting slot 21 face the inside of the traction frame 1. The first slot 9, the second slot 10 and the limiting slot 21 are all non-through. The second slot 10 is provided to facilitate the installation of the second plug-in piece 13 therein, so that the connecting block 2 at the top of the second plug-in piece 13 is quickly connected to the traction frame 1. The limiting slot 21 provided facilitates the bottom of the connecting block 2 to be clamped therein, thereby further increasing the traction frame 1 and the connecting block 2, and the first slot 9 is provided to facilitate the installation of other auxiliary structures in the device. The traction frame 1 is provided with a first recess 8, which can make the traction frame 1 half-wrap the patient's lips when in use, so that the device is more comfortable to use. The above structure is relatively simple, and the coordinated use of the structures further makes the use effect of the device better and the practicability of the device better. The first weakened portion 11 is provided on both sides of the traction frame 1, and the fifth weakened portion 22 is provided on the top and bottom of the traction frame 1. The arrangement of the first weakened portion 11 and the fifth weakened portion 22 can make the traction frame 1 have better deformation ability, so that the traction frame 1 can be deformed first from the first weakened portion 11 and the fifth weakened portion 22 under the action of external force.

[0049] like Figure 1 and Figures 4 to 11 As shown, the traction hook 4 is provided with a mounting groove 16 for mounting the connecting block 2 in the mounting groove 16, so that the connecting block 2 and the traction hook 4 are connected together for use. The side of the mounting groove 16 close to the end block 3 is narrower, and the side of the mounting groove 16 away from the end block 3 is wider, which further facilitates the installation of the connecting block 2. During installation, the end block 3 is inserted from the wider side of the mounting groove 16, and then the connecting block 2 and the end block 3 are moved to the narrower side of the mounting groove 16. The traction hook 4 is provided with a lightweight groove 17, which reduces the weight of the traction hook 4 and facilitates fixing the side of the traction hook 4 away from the traction frame 1 on the frame of the operating table. The opening of the lightweight groove 17 also increases the anti-slip property of the outer wall of the traction hook 4, which is also convenient for medical staff to hold and operate.

[0050] A soft tissue pressing sheet 15 is fixedly connected to one side of the traction hook 4 close to the end block 3, so that one end of the traction hook 4 can hook the soft tissue of the patient. A third weakened portion 18 is provided on the soft tissue pressing sheet 15, so that the connection between the traction hook 4 and the soft tissue pressing sheet 15 has a certain deformation ability, so that the soft tissue pressing sheet 15 can be better used to limit the soft tissue of the patient. A second recess 19 is provided on the soft tissue pressing sheet 15. Through the setting of the second recess 19, the side of the soft tissue pressing sheet 15 close to the soft tissue of the patient is arc-shaped, thereby preventing the patient from feeling uncomfortable when the edge of the soft tissue pressing sheet 15 directly contacts the soft tissue when contacting the patient. In addition, the setting of the second recess 19 can make the outer wall of the side of the soft tissue pressing sheet 15 close to the soft tissue of the patient better fit the soft tissue part of the patient. In addition, the above-mentioned structure is relatively simple and convenient to use and operate. The coordinated use of the structures further improves the use effect of the device.

[0051] Furthermore, the connecting block 2, the end block 3 and the second plug-in piece 13 are integrally formed, and the integral structure has better stability. The connecting block 2, the end block 3 and the second plug-in piece 13 are all made of plastic material, and the plastic material has good deformation ability, so that the device can be elastically expanded to a certain extent when it is unfolded and used. A buffer cavity 12 is provided in the end block 3. The buffer cavity 12 is used to make the end block 3 have better deformation ability, so that the connecting block 2 and the end block 3 can be quickly installed in the installation groove 16. A second weakened portion 14 is provided on the second plug-in piece 13. The second weakened portion 14 is provided to make the deformation ability of the second plug-in piece 13 better, so that the second plug-in piece 13 is deformed first from the second weakened portion 14 under the action of external force. The coordinated use of the above structures further makes the use effect of the device better and increases the practicality of the device.

[0052] like Figure 1 , Figure 2 , Figure 7 and Figure 12 to Figure 14 As shown, the soft tissue pulling auxiliary mechanism includes a first plug-in sheet 5 installed on the traction frame 1, one side of the first plug-in sheet 5 is fixedly connected to a connecting sheet 6, and the side of the connecting sheet 6 away from the first plug-in sheet 5 is fixedly connected to a limiting sheet 7, as shown in FIG. Fig.14The cross-section of the first plug sheet 5 shown is concave, and the first plug sheet 5, the connecting sheet 6 and the limiting sheet 7 are an integrated structure. The stability of the integrated structure is good. By installing the first plug sheet 5 in the first slot 9, the first plug sheet 5 and the connecting sheet 6 and the limiting sheet 7 thereon can be quickly installed on the traction frame 1 for use. The integrated structure formed by the first plug sheet 5, the connecting sheet 6 and the limiting sheet 7 is set on the patient's upper jaw and lower jaw, and the teeth and oral mucosa are in contact with the connecting sheet 6, so that when the traction frame 1 is expanded, the cooperation between the above structures can better expose the patient's soft tissue hand wound, thereby facilitating the surgical operation, and the structure is simple, and the cooperation between the structures further makes the use effect of the device better.

[0053] Furthermore, the shape of the first plug piece 5 is compatible with the shape of the first slot 9, so that the first plug piece 5 can be more stably installed in the first slot 9. The structure formed by the first plug piece 5, the connecting piece 6 and the limiting piece 7 is concave, which can better adapt to the contours of the patient's upper and lower jaws. The connecting piece 6 is provided with a fourth weakened portion 20, which enhances the deformation ability of the connecting piece 6, so that the connecting piece 6 is first deformed from the fourth weakened portion 20 under the action of external force, so that the first plug piece 5, the connecting piece 6 and the limiting piece 7 can better fit the patient's oral soft tissue. The outer wall edges of the first plug piece 5, the connecting piece 6 and the limiting piece 7 are all arc-shaped, and the arc shape has no obvious edges and corners, which prevents the first plug piece 5, the connecting piece 6 and the limiting piece 7 from accidentally scratching the patient during use. In addition, the above-mentioned structure is relatively simple, and the coordinated use of the structures further makes the use effect of the soft tissue traction auxiliary mechanism better, thereby making the device more practical.

[0054] The working principle of the technical solution provided by the present invention is as follows:

[0055] First, insert the end block 3 from the wider side of the mounting groove 16, and use the arc-shaped guide of the outer wall of the end block 3 and the certain deformation of the buffer cavity 12 when it is squeezed to make the end block 3 quickly inserted into the mounting groove 16, so that the connecting block 2 is inserted into the mounting groove 16, and use the end block 3 to limit the end of the connecting block 2, and then move the connecting block 2 and the end block 3 to the narrower side of the mounting groove 16 to further prevent the connecting block 2 from slipping out of the mounting groove 16 during use. After the connection between the connecting block 2 and the traction hook 4 is completed, the second plug-in piece 13 at the bottom of the connecting block 2 is inserted into the second slot 10, and the bottom of the connecting block 2 is clamped in the limiting slot 21, and then the first plug-in piece 5 is inserted into the first slot 9, wherein the traction hooks 4 can be two or four for use in combination, and the specific number can be installed according to the on-site usage to complete the installation connection between the structures.

[0056] Then, let the patient open his mouth slightly. Since the initial shape of the traction skeleton 1 is compatible with the slightly opened shape of the patient's lips, the traction skeleton 1 is placed in the patient's mouth, and the first recess 8 is used to make the traction skeleton 1 half-wrap the patient's lips. Then, the traction hook 4 is pulled to unfold the traction skeleton 1. Subsequently, the side of the traction hook 4 away from the soft tissue pressing sheet 15 is fixed on the existing clamping frame or the medical staff holds the traction hook 4 to maintain the unfolding degree of the traction skeleton 1. The clamping frame is an existing mature technology, and its specific structure and working principle are not described in detail here. The fixing method of the traction hook 4 is not limited here. The traction skeleton 1 and the traction hook 4 are used to open the patient's upper and lower lips and the upper and lower jaws, so as to expose the soft tissue surgical opening well, and when the traction hook 4 is used When the skeleton 1 cooperates with the traction hook 4 to open the wound, the integrated structure formed by the first insert piece 5, the connecting piece 6 and the limiting piece 7 is arranged on the upper and lower jaws of the patient, and the teeth and oral mucosa are in contact with the connecting piece 6, and the connecting piece 6 is provided with a fourth weakened portion 20, so that the connecting piece 6 is first deformed from the fourth weakened portion 20 under the action of external force, so that the first insert piece 5, the connecting piece 6 and the limiting piece 7 can better fit with the soft tissue of the patient's mouth, so that when the device is used to open a soft tissue surgical wound, the patient's lips, upper and lower jaws can be well supported, and the force is relatively uniform, so that the patient will not feel strong discomfort, and the structure of the device is relatively simple, and the coordinated use of the structures further makes the use effect of the device better.

[0057] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A retractor for oral and maxillofacial surgery, characterized in that: It comprises a traction frame, traction hooks are installed on both sides of the traction frame, second plug-ins are installed on both sides of the traction frame, a connecting block is fixedly connected to the top of the second plug-in, an end block is fixedly connected to the top of the connecting block, and a first recess is opened on the traction frame; A soft tissue pulling auxiliary mechanism is used to assist soft tissue surgery operations, and the soft tissue pulling auxiliary mechanism is connected to the traction frame.

2. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: The traction frame is provided with second slots matched with the second inserting piece on both sides, the traction frame is provided with first slots on the top and bottom, and the traction frame is provided with limiting grooves matched with the shape of the connecting block on both sides.

3. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: The traction hook is provided with an installation groove, wherein the side of the installation groove close to the end block is narrower, and the side of the installation groove away from the end block is wider.

4. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: A lightweight groove is provided on the traction hook, and a soft tissue pressing piece is fixedly connected to one side of the traction hook close to the end block.

5. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: The soft tissue pressing piece is provided with a third weakened portion, and the soft tissue pressing piece is provided with a second recessed portion.

6. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: The connecting block, the end block and the second plug-in piece are integrally formed, and the connecting block, the end block and the second plug-in piece are all made of plastic material.

7. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: A buffer cavity is provided in the end block, and a second weakened portion is provided on the second inserting piece.

8. The retractor for oral and maxillofacial surgery according to claim 1, characterized in that: The soft tissue pulling auxiliary mechanism comprises a first plug-in piece installed on the traction frame, one side of the first plug-in piece is fixedly connected to a connecting piece, and the side of the connecting piece away from the first plug-in piece is fixedly connected to a limiting piece.

9. The retractor for oral and maxillofacial surgery according to claim 8, characterized in that: The shape of the first inserting piece is matched with the shape of the first slot, and the structure formed by the first inserting piece, the connecting piece and the limiting piece is concave.

10. The retractor for oral and maxillofacial surgery according to claim 8, characterized in that: The connecting piece is provided with a fourth weakened portion, and the outer wall edges of the first inserting piece, the connecting piece and the limiting piece are all arc-shaped.

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