Multifunctional dilator for oral maxillofacial operation

Abstract

The utility model relates to a multifunctional dilator for oral and maxillofacial surgery, which comprises an opening part used for keeping an oral cavity open to expose a surgical area and a tongue pressing part used for pressing a tongue to one side to expand the visual field range of the surgical area, and the opening part comprises two handles which are connected with each other. A limiting channel pointing to the oral cavity is arranged on the surface of the joint of the two handles, and the tongue pressing part is detachably connected with the opening part in the mode that at least part of the structure of the tongue pressing part is kept in the limiting channel. When the tongue depressing part moves along the limiting channel to adjust the distance between the tongue depressing part and the oral cavity, the limiting channel can lock the tongue depressing part at a preset position through locking buttons arranged on the two sides of the limiting channel. The operation accuracy and safety in the operation process are obviously improved, and the stability and reliability of the tongue depressing part in the operation process are ensured. By means of the mode, medical staff can control the operation area more effectively, operation time is shortened, operation efficiency is improved, and discomfort of a patient and potential operation risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical devices, in particular to a multifunctional retractor for oral and maxillofacial surgery. Background Art

[0002] In the clinical operations of the stomatology department of modern hospitals, doctors often encounter multiple challenges when performing examinations or treatments. First of all, patients must keep their mouths open for a long time, which may not only cause facial muscle fatigue but also reduce the comfort and effectiveness of examinations or treatments. Secondly, to ensure the smooth progress of the treatment process, patients need to frequently adjust their postures to remove secretions and cleaning fluids in the oral cavity. This usually involves fixing a saliva suction tube in the oral cavity and taking measures to prevent the saliva suction tube from shaking or falling off.

[0003] In addition, since the patient's tongue is prone to movement, doctors may need to use a tongue depressor to stabilize the tongue for better observation and operation. At the same time, doctors also need to use an oral mirror to observe the internal situation of the oral cavity. However, due to the limited hands of doctors, one hand often needs to operate equipment (such as a dental treatment head), and it is difficult for the other hand to operate a tongue depressor or a saliva suction tube at the same time, which limits their ability to perform other operations simultaneously. Therefore, in many cases, doctors need the assistance of assistants, who are responsible for delivering materials and instruments, as well as other auxiliary work.

[0004] For example, the patent document with the authorization announcement number CN209996288U discloses a multifunctional forceps-type mouth opener, which includes a pair of forceps handles, a limiting device, and a multifunctional bracket; the two forceps handles are joined together and fixed by bolts, and a limiting device is provided at the hand-held part of the forceps handle; a multifunctional bracket is provided at the position where the two forceps handles are joined; several movable brackets are provided on the multifunctional bracket, and a buckle is provided on the movable bracket. Although this mouth opener can mount various commonly used devices in oral treatments, it is convenient and fast to operate, and reduces the burden on doctors and nurses. There are certain limitations in the layout of the limiting device of this mouth opener, that is, its position is set higher than the surface of the handle. Such a setting inevitably limits the utilization of the space above the handle, resulting in obstacles in the arrangement of some medical devices, and thus posing challenges to the smoothness and flexibility of the operation.

[0005] In addition, on the one hand, there are differences in the understanding of those skilled in the art; on the other hand, although the applicant has studied a large number of documents and patents when making this utility model, due to space limitations, all details and contents are not listed in detail. However, this by no means means that this utility model does not possess the features of these prior arts. On the contrary, this utility model already possesses all the features of the prior arts, and the applicant reserves the right to add relevant prior arts in the background art. Summary of the Utility Model

[0006] In the prior art, devices such as tongue depressors dedicated for surgery cannot be used in combination with mouth gags. This makes it impossible for medical staff to operate the mouth gag and tongue depressor single-handedly, and multiple people need to cooperate to operate the mouth gag and tongue depressor in order to complete the opening and display of the oral and maxillofacial region. The disadvantage of this is that the cooperation method is inefficient and has poor results. As a result, the tongue depressor cannot adjust the angle and force in a timely manner according to the needs during the surgery and the changes of the tongue, causing the tongue to easily block the surgical field of view.

[0007] In view of the deficiencies of the prior art, the present utility model provides a multifunctional retractor for oral and maxillofacial surgery from the first aspect, which includes an opening part for keeping the mouth open to expose the surgical area and a tongue-depressing part for pressing the tongue to one side to expand the visual field range of the surgical area. The opening part includes two handles that are hinged to each other, and a limiting channel pointing to the oral cavity is arranged on the surface at the hinge of the two handles. The tongue-depressing part is detachably connected to the opening part in such a way that at least part of its structure is held in the limiting channel. This connection method not only ensures the stable positioning of the tongue-depressing part, but also allows medical staff to flexibly adjust the position of the tongue-depressing part according to the surgical needs.

[0008] When the tongue-depressing part moves along the limiting channel to adjust the distance of the tongue-depressing part relative to the oral cavity, the limiting channel can lock the tongue-depressing part at a predetermined position through the locking buttons arranged on both sides thereof. This technical feature greatly improves the operation accuracy and safety during the surgery, ensuring the stability and reliability of the tongue-depressing part during the surgery. In this way, medical staff can more effectively control the surgical area, reduce the surgical time and improve the surgical efficiency, while reducing the discomfort of the patient and potential surgical risks.

[0009] The present utility model combines the functions of a mouth gag and a tongue depressor, aiming to optimize the operation environment of oral surgery. The opening part is a pliers-type mouth gag, and the tongue-depressing part is a spoon-type tongue depressor. The design of the opening part allows medical staff to keep the patient's mouth open, thus clearly exposing the surgical area, which is crucial for performing delicate oral surgery. The opening part is composed of two handles that are hinged to each other. This design not only enhances the structural stability, but also facilitates the operation of medical staff. The present utility model enables the tongue-depressing part to be combined with the opening part by setting the position of the tongue-depressing part to be movable and lockable.

[0010] According to a preferred embodiment, the limiting channel is connected to the pivot shaft disposed at the junction of the two handles, so that the orientation of the limiting channel is not affected by the opening and closing operation of the handles. This design greatly enhances the practicability of the device and the convenience of operation, enabling doctors to maintain a clear surgical field of view regardless of the opening and closing state of the handles during oral surgery. The pivot shaft reduces the height of the limiting channel protruding beyond the surface of the handle in the form of its head being embedded in the surface of the handle. This effectively reduces the height of the limiting channel protruding beyond the surface of the handle. This design not only makes the entire device look more compact and aesthetic, but also makes the spatial positions of the tongue-depressing part and the opening part closer, improving their closeness during use.

[0011] According to a preferred embodiment, the tongue-depressing part includes a tongue-depressing section and a supporting section. The tongue-depressing section has a curved surface structure to press the tongue towards the side of the oral cavity away from the surgical area by buckling on the tongue. The design of the curved surface structure not only provides sufficient contact area to ensure the stability and comfort of tongue depression, but also allows medical staff to adjust the force and position of tongue depression according to the surgical needs. The supporting section is slidably connected to the limiting channel, so that the tongue-depressing section can change the degree of lateral pressure on the tongue driven by the sliding of the supporting section. This sliding connection mechanism provides great flexibility and adjustability. Medical staff can accurately control the force and range of tongue depression of the tongue-depressing section by adjusting the position of the supporting section according to the actual situation of the surgery.

[0012] According to a preferred embodiment, the locking button is pivotally connected to the first locking member on the surface of the limiting channel. A pressing spring is disposed on the shaft, and a locking groove is provided on the limiting channel. When the pressing spring defines the locking button in the locked state, one end of the pressing spring is inserted into the locking groove and applies a force to the supporting section located in the limiting channel to restrict the movement of the supporting section. By setting the locking button to restrict the position of the supporting section, the position of the tongue-depressing section is thus defined, realizing the limitation of the tongue, and eliminating the need for the operator to constantly press the tongue-depressing part, simplifying the operation of the operator on the tongue-depressing part.

[0013] According to a preferred embodiment, a limiting structure is provided on the supporting section. When one end of the locking button is inserted into the locking groove, the locking button and the limiting structure engage with each other to restrict the movement of the supporting section. Such a structural design enables the supporting section to be stably limited at a predetermined position without moving, improving the stability of the tongue-depressing section in limiting the tongue.

[0014] According to a preferred embodiment, the handle includes a curved front section for insertion into the mouth and a rear section for hand gripping. The area between the two rear sections houses a handle locking member for adjusting the handle's opening and closing. The thickness of the locking member should not exceed that of the handle to avoid interfering with the positioning of the limiting channel. The curved front section allows the handle to better adapt to the shape of the mouth, ensuring the mouthpiece remains stably and comfortably fixed in place when inserted, thus providing a stable operating platform for surgery.

[0015] According to a preferred embodiment, the retaining structure of the support section is a serrated structure. When the locking button is pressed, the locking button passes through the locking slot and engages with the retaining structure to lock the tongue-depressing portion in a predetermined position. The advantage of the serrated structure is that it does not increase the thickness of the support section and still achieves a good retaining effect.

[0016] According to a preferred embodiment, the forceps handle locking member is equipped with two legs, each of which is connected to its adjacent handle. The two legs mesh with each other, and one of the legs is equipped with a knob to adjust the length of the meshing portion. The knob adjusts the degree of opening and closing of the spreader by changing the distance between the two handles. This allows medical personnel to flexibly adjust the size of the mouth opener according to surgical needs, adapting to different mouth sizes and surgical requirements. This adjustment mechanism not only improves surgical precision but also enhances the adaptability and versatility of the device.

[0017] According to a preferred embodiment, an adapter portion is mounted on the surface of the opening, which is used to removably secure a dental treatment instrument. The adapter portion includes a slide and a plurality of sliding stop holes provided therein. Each sliding stop hole is equipped with a second locking member that locks it to the slide, so that the sliding stop hole can be fixed in a predetermined position when sliding on the slide. The provision of the adapter portion allows the dental treatment instrument to be removably secured to the surface of the opening, facilitating flexible adjustment and use of the dental treatment instrument.

[0018] According to a preferred embodiment, the slide is fixed to the limiting channel by a slide fixing member. By providing the slide fixing member, the multifunctional oral and maxillofacial surgery spreader can fix more dental treatment instruments, thereby making oral surgery more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the multifunctional opener for oral and maxillofacial surgery provided by the utility model from a first angle;

[0020] Figure 2 This is a schematic diagram of the overall structure of the multifunctional opener for oral and maxillofacial surgery provided by the utility model from a second angle;

[0021] Figure 3It is a combined schematic diagram of the opening part and the tongue depressor part of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model at the first angle in the use state;

[0023] Figure 5 It is a schematic structural diagram of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model at the second angle in the use state;

[0024] Figure 6 It is a partial schematic diagram of the locking button of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model;

[0025] Figure 7 It is a combined schematic diagram of the limiting channel and the opening part of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model;

[0026] Figure 8 It is a schematic structural diagram of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model and the adapter part;

[0027] Figure 9 It is a partial enlarged schematic diagram of the adapter part of the multi-functional retractor for oral and maxillofacial surgery provided by the present utility model.

[0028] List of reference numerals

[0029] 100: Opening part; 110: Handle; 111: Front section; 112: Rear section; 113: Elastic support; 114: Handle rotating shaft; 115: Interdental pad; 120: Limiting channel; 130: Locking button; 131: Locking groove; 140: Pivot shaft; 150: Forceps handle locking part; 151: Leg; 152: Knob; 200: Tongue depressor part; 210: Tongue depressor section; 220: Support section; 221: Limiting structure; 300: Adapter part; 310: Slide; 320: Sliding limiting hole; 330: First locking part; 340: Pressing spring; 350: Second locking part; 360: Slide fixing part. Detailed implementation manners

[0030] The following is a detailed description with reference to the accompanying drawings.

[0031] Although conventional multifunctional pliers-type mouth openers feature a multifunctional bracket on their surface, this bracket is relatively large and occupies the space above the handles, hindering the placement of some medical devices. Furthermore, the bracket prevents the tongue depressor from being adjusted or effectively fixed in the direction of the mouth. Therefore, improving the specific structure of the pliers-type mouth opener to allow for flexible positioning of devices such as the tongue depressor has become a pressing technical challenge.

[0032] The utility model provides a multifunctional opener for oral and maxillofacial surgery. Figures 1 to 9 As shown. The multifunctional opener for oral and maxillofacial surgery combines the functions of an opener and a tongue depressor, aiming to optimize the operating environment of oral surgery. Figures 1 to 7 As shown, the opening portion 100 is a forceps-type opener, and the tongue depressor 200 is a spoon-type tongue depressor. The design of the opening portion 100 allows medical personnel to open the patient's mouth and maintain an open position, thereby clearly exposing the surgical area, which is crucial for performing delicate oral surgery. The opening portion 100 comprises two intersecting handles 110, which not only enhances structural stability but also facilitates operation.

[0033] Preferably, if Figures 1 to 7 As shown, the surface where the two handles 110 meet is provided with a limiting channel 120 pointing toward the oral cavity. This design enables the tongue depressor 200 to be coupled to the opening 100. The tongue depressor 200 is detachably connected to the opening 100 by retaining at least a portion of its structure within the limiting channel 120. This connection not only ensures the stable positioning of the tongue depressor 200, but also allows medical personnel to flexibly adjust the position of the tongue depressor 200 according to surgical needs.

[0034] Preferably, if Figures 1 to 7 As shown, the limiting channel 120 is designed as a long, rectangular channel with a locking button 130 disposed on its exterior. The limiting channel 120 can be snapped onto the junction of the two handles 110. The limiting channel 120 can have any shape, but is preferably a rectangular channel structure. This helps minimize the space occupied above the handles 110, allowing the tongue depressor 200 to move toward the oral cavity, pressing against the tongue to limit its range of movement.

[0035] Preferably, the channel direction of the limiting channel 120 is set to point towards the oral cavity, so that the movement direction of the tongue depressor 200 is towards the oral cavity, making it easier for the tongue depressing section 210 of the tongue depressor 200 to enter and move out of the oral cavity.

[0036] Preferably, when the tongue depressor 200 moves along the limiting channel 120, the locking buttons 130 arranged on both sides of the limiting channel 120 can lock the tongue depressor 200 at a predetermined position. This technical feature greatly improves the operation accuracy and safety during the operation, ensuring the stability and reliability of the tongue depressor 200 during the operation. In this way, medical staff can more effectively control the operation area, reduce the operation time and improve the operation efficiency, while reducing the discomfort of the patient and potential operation risks.

[0037] Preferably, as Figures 1 to 7 shown, the limiting channel 120 is connected to the pivot shaft 140 arranged at the junction of the two handles 110. This design ingeniously ensures that the direction of the limiting channel 120 remains stable during the opening and closing operation of the handles 110 and will not be affected by anything.

[0038] Preferably, the limiting channel 120 is arranged on the surface of the pivot shaft 140 at the junction of the two handles 110 and is integrally connected or detachably connected to the pivot shaft 140. In the case where the limiting channel 120 is detachably connected, the limiting channel 120 can be connected to the pivot shaft 140 in a snap-fit or bolted connection manner. Such a connection method enables the opening part 100 to be connected to the tongue depressor 200 regardless of whether the opening part 100 is in an open or closed state, and will not hinder the use of the opening part 100. This design greatly enhances the practicability of the device and the convenience of operation, enabling doctors to maintain a clear operation field of view regardless of the opening and closing state of the handles 110 during oral surgery. In addition, the design of the pivot shaft 140 also takes into account the appearance and use comfort of the device. The pivot shaft 140 is in the form of its head being embedded in the surface of the handle 110, effectively reducing the height of the limiting channel 120 exceeding the surface of the handle 110. This design not only makes the whole device look more compact and beautiful, but also makes the spatial positions of the tongue depressor 200 and the opening part 100 closer, improving the closeness between the two during use.

[0039] Preferably, as Figures 1 to 7 shown, the tongue depressor 200 is detachably arranged in the limiting channel 120. Preferably, the opening of the limiting channel 120 can also be set to an opening approximately in the shape of a "V" to reduce the resistance of the tongue depressor 200 entering the limiting channel 120. Preferably, sliding rails or chutes that make the limiting channel 120 and the tongue depressor 200 fit each other can also be arranged in the limiting channel 120 to make the tongue depressor 200 move more easily in the limiting channel 120.

[0040] Preferably, as Figures 1 to 7As shown, the tongue depressor part 200 includes a tongue depressor section 210 and a support section 220. These two parts work together to effectively control the tongue. The position of the support section 220 close to the tongue depressor section 210 has an arc section, and the bending direction of the arc section is adapted to the bending direction of the front section 111 of the opening part 100. For example, the bending direction of the arc section is approximately the same as that of the front section 111 of the opening part 100, and the bending radian is approximately the same. Such a design enables the tongue depressor section 210 to enter the oral cavity with a larger surface and press against the tongue. At the same time, the larger surface contact with the tongue will also effectively press the tongue and prevent it from being injured due to a smaller force-bearing area or contact with sharp edges.

[0041] As Figures 1 to 7 shown, the tongue depressor section 210 is a curved surface structure. Preferably, the tongue depressor section 210 is a curved surface structure with the curved surface bending towards the direction where the handle 110 is located. Preferably, the tongue depressor section 210 adopts a spoon-shaped structure, with the concave surface of the spoon-shaped structure facing the direction where the handle 110 is located and the convex surface of the spoon-shaped structure facing the direction of the oral cavity. This design enables the tongue depressor section 210 to press the tongue towards the side of the oral cavity away from the surgical area by buckling on the tongue. The design of the spoon-shaped structure particularly conforms to the shape of the tongue body, not only providing sufficient contact area to ensure the stability and comfort of tongue depression, but also allowing medical staff to adjust the force and position of tongue depression according to surgical needs.

[0042] The support section 220 is slidably connected to the limit channel 120. This design enables the tongue depressor section 210 to change the degree of lateral pressure on the tongue driven by the sliding of the support section 220. This sliding connection mechanism provides great flexibility and adjustability. Medical staff can accurately control the force and range of the tongue depressor section 210 by adjusting the position of the support section 220 according to the actual situation of the operation. This design not only enhances the accuracy of the surgical operation, but also improves the surgical efficiency, reduces the operation time and the discomfort of the patient. Through this structural design, the tongue depressor part 200 of the present utility model can effectively assist medical staff in controlling the position of the tongue during oral surgery, ensuring the clear exposure of the surgical area, thereby improving the safety and success rate of the operation. At the same time, this design also takes into account the comfort of the patient, and reduces the discomfort or pressure that may be caused to the patient during the operation through adjustable tongue depression force.

[0043] As Figures 1 to 7 shown, a limit structure 221 is provided on the support section 220. The limit structure 221 is composed of a groove or point structure and is distributed on the surface of the support section 220 to form a limit area. When the support section 220 of the tongue depressor part 200 enters the limit channel 120 and moves, the limit area faces away from the opening part 100, that is, the limit area faces the direction where the locking button 130 is provided.

[0044] One side of the limiting channel 120 that is non - contact with the pivot shaft 140 is provided with a locking button 130. As Figure 6 shown, the locking button 130 is pivotally connected to a first locking member 330 on the surface of the limiting channel 120. Preferably, a pressing spring 340 is arranged on the shaft. The two ends of the pressing spring 340 respectively abut against the surface of the limiting channel 120 and the surface of the locking button 130, making the locking button 130 inclined relative to the surface of the limiting channel 120, and one end of the locking button 130 is inserted into the locking groove 131 of the limiting channel 120. Preferably, the end of the locking button 130 inserted into the locking groove 131 is bent towards the direction where the locking groove 131 is located and is arc - shaped, so that after the locking button 130 is inserted into the locking groove 131, it catches the limiting structure 221 to realize the limitation of the supporting section 220. Preferably, the pressing end of the locking button 130 that is not inserted into the locking groove 131 can be designed into geometric shapes such as a large - area circle, square, etc., in order to reduce the difficulty of pressing.

[0045] When pressing the pressing end of the locking button 130, one end of the locking button 130 is lifted and does not contact the limiting structure 221 in the limiting area of the supporting section 220, and the force applied to the supporting section 220 decreases or even disappears, so that the supporting section 220 can move flexibly and adjust the pressing force of the tongue - pressing section 210 on the tongue. When releasing the pressing of the pressing end of the locking button 130, one end of the locking button 130 applies a force to the limiting area of the supporting section 220 under the elastic action of the pressing spring 340, and its end is engaged with the limiting structure 221 in the limiting area, thereby restricting the position of the supporting section 220 in the limiting channel 120 and realizing the fixation of the position of the tongue - pressing section 210.

[0046] The design of the locking button 130 increases the convenience and flexibility of the tongue - pressing operation. The pressing spring 340 can provide necessary elastic feedback when the locking button 130 is pressed, ensuring that the locking button 130 can stably maintain the locked or unlocked state, thereby improving the reliability of the device and the accuracy of the operation.

[0047] Preferably, the limiting structure 221 of the limiting channel 120 can be designed as a serrated structure. This design enhances the connection stability between the handle 110 and the limiting channel 120. When the locking button 130 in the limiting channel 120 is pressed, the locking button 130 can be engaged with the limiting channel 120 through the serrated structure, thereby accurately limiting the position of the tongue - pressing section 210 to ensure that the tongue - pressing section 210 will not accidentally move or loosen during the operation, improving the safety and success rate of the operation.

[0048] Preferably, as Figures 1 to 7As shown, the handle 110 includes a front section 111 that is bent and inserted into the oral cavity and a tail section 112 for hand gripping. The bent design of the front section 111 enables the handle 110 to better adapt to the shape of the oral cavity, ensuring that the opening part 100 can be stably and comfortably fixed in position when inserted into the oral cavity, thereby providing a stable operation platform for the surgery. A clamp handle locking member 150 for adjusting the opening and closing degree of the handle 110 is arranged in the area between the tail sections 112 of the two handles 110. This design allows medical staff to flexibly adjust the opening and closing degree of the handle 110 according to the surgical needs, so as to adapt to oral cavities of different sizes and surgical requirements. The thickness of the clamp handle locking member 150 does not exceed the thickness of the handle 110. This design takes into account the compactness and functionality of the overall structure, ensuring that the arrangement of the clamp handle locking member 150 does not interfere with the function of the limit channel 120 and guaranteeing the stability and reliability of the device.

[0049] Preferably, as Figures 1 to 7 shown, the clamp handle locking member 150 is configured with two support feet 151, which enhances the stability and adjustability of the handle 110. Each support foot 151 is connected to the adjacent handle 110, ensuring the stability and reliability of the handle 110 during operation. The two support feet 151 engage with each other. This design not only enhances the structural stability but also allows the opening and closing degree of the handle 110 to be adjusted through simple operations. One of the support feet 151 is equipped with a knob 152 for adjusting the length of the engaging part. The knob 152 adjusts the opening and closing degree of the opening part 100 by changing the distance between the two handles 110, enabling medical staff to flexibly adjust the size of the opening part 100 according to the surgical needs and adapt to oral cavities of different sizes and surgical requirements. This adjustment mechanism not only improves the accuracy of the surgery but also enhances the adaptability and versatility of the device.

[0050] Preferably, the support feet 151 are arranged inside the handle 110 through the handle rotating shaft 114. This design enables the angle between the support feet 151 and the handle 110 to be adaptively adjusted based on the opening and closing degree of the handle 110, eliminating the resistance of the support feet 151 to the closing of the handle 110.

[0051] Preferably, an interdental pad 115 is configured at the end of the front section 111 of the handle 110. This design takes into account the comfort of the patient and the accuracy of the surgery. Preferably, the interdental pad 115 can be made of a soft medical material such as medical silicone. The interdental pad 115 includes a convex structure that protrudes in different directions, which is used to protect oral tissues and avoid damage to oral soft tissues caused by surgical instruments. The interdental pad 115 can effectively disperse the pressure of the handle 110 on the teeth, reduce the damage to the patient's oral tissues, and at the same time ensure the stable positioning of the handle 110 in the oral cavity, providing a clear operation field of view for oral surgery.

[0052] Preferably, asFigures 1 to 7 As shown, elastic support members 113 are respectively provided on the inner sides of the handles 110. The elastic support members 113 are made of elastic materials. The elastic support members 113 of the two handles 110 are cross-connected to apply elastic forces to the two handles 110 respectively. When the tail sections 112 of the two handles 110 are separated, the two handles 110 can be quickly separated under the elastic force of the elastic support members 113, so as to facilitate the operator to quickly open the front sections 111 of the handles 110.

[0053] The present application also proposes a mouth opener kit capable of installing dental treatment instruments, including an opening part 100, as Figure 8 and Figure 9 shown, a transfer part 300 for the passage of dental treatment instruments is arranged on the surface of the opening part 100. The transfer part 300 is used to detachably fix dental treatment instruments separately or simultaneously. Preferably, the dental treatment instruments include a saliva ejector tube, a tongue depressor, an oral mirror, etc. Preferably, the transfer part 300 arranged on the surface of the opening part 100 has a sliding table 310 and a plurality of sliding limit holes 320 arranged thereon. The sliding table 310 is fixed on the limit channel 120 through a sliding table fixing member 360. The sliding table fixing member 360 is, for example, a buckle.

[0054] As Figure 8 and Figure 9 shown, any one of the sliding limit holes 320 is provided with a second locking member 350 for locking it on the sliding table 310, so that the sliding limit hole 320 can be fixed at a predetermined position when sliding on the sliding table 310. Preferably, the sliding limit hole 320 and the second locking member 350 are arranged on the same sliding block. A pressable spring member and a limiting component are arranged under the second locking member 350, and its locking principle is the same as that of the locking button 130. The difference is that the spring member and the limiting component are not visible inside, so the specific structure of the second locking member 350 is not shown in the figure.

[0055] When the second locking member 350 is pressed downward and separated from the limiting component, when the second locking member 350 is in the unlocked state, the sliding limit hole 320 can move arbitrarily on the sliding table 310. When the pressing stops, the second locking member 350 is reset under the action of the spring member and is in the locked state with respect to the limiting component, and the sliding limit hole 320 is restricted to a predetermined position on the sliding table 310.

[0056] It should be noted that the above specific embodiments are exemplary. Those skilled in the art can come up with various solutions inspired by the disclosed content of the present utility model, and these solutions also fall within the scope of the disclosure of the present utility model and within the protection scope of the present utility model. Those skilled in the art should understand that the specification and drawings of the present utility model are illustrative and do not constitute a limitation on the claims. The protection scope of the present utility model is defined by the claims and their equivalents. The specification of the present utility model contains multiple inventive concepts. For example, "preferably" and "according to a preferred embodiment" both indicate that the corresponding paragraphs disclose an independent inventive concept. The applicant reserves the right to file divisional applications based on each inventive concept.

Claims

1. A multifunctional retractor for oral and maxillofacial surgery, comprising an opening part (100) for keeping the oral cavity open to expose the surgical area and a tongue pressing part (200) for pressing the tongue to one side to expand the visual field range of the surgical area, characterized in that, The opening part (100) includes two handles (110) that are hinged to each other. A limiting channel (120) pointing to the oral cavity is arranged on the surface at the hinge of the two handles (110). The tongue pressing part (200) is detachably connected to the opening part (100) in such a way that at least part of its structure is held in the limiting channel (120). Wherein, when the tongue pressing part (200) moves along the limiting channel (120) to adjust the distance of the tongue pressing part (200) relative to the oral cavity, the limiting channel (120) can lock the tongue pressing part (200) at a predetermined position through a locking button (130).

2. The multifunctional retractor for oral and maxillofacial surgery according to claim 1, characterized in that, The limiting channel (120) is connected to a pivot shaft (140) arranged at the hinge of the two handles (110), so that the direction of the limiting channel (120) is not affected by the opening and closing operation of the handles (110). The pivot shaft (140) reduces the height of the limiting channel (120) protruding beyond the surface of the handle (110) in the form that its head is embedded in the surface of the handle (110).

3. The multifunctional retractor for oral and maxillofacial surgery according to claim 2, characterized in that, The tongue pressing part (200) includes a tongue pressing section (210) and a supporting section (220). The tongue pressing section (210) has a curved surface structure to press the tongue to the side of the oral cavity away from the surgical area by buckling on the tongue. The supporting section (220) is slidably connected to the limiting channel (120), so that the tongue pressing section (210) can change the degree of lateral pressure on the tongue driven by the sliding of the supporting section (220).

4. The multifunctional retractor for oral and maxillofacial surgery according to claim 3, wherein The locking button (130) is axially connected to a first locking member (330) on the surface of the limiting channel (120), and a pressing spring (340) is arranged on the shaft. A locking groove (131) is arranged on the limiting channel (120). When the pressing spring (340) limits the locking button (130) to the locked state, one end of the pressing spring (340) is inserted into the locking groove (131) and applies a force to the supporting section (220) located in the limiting channel (120) to restrict the movement of the supporting section (220).

5. The multifunctional retractor for oral and maxillofacial surgery according to claim 4, characterized in that, A limiting structure (221) is arranged on the supporting section (220). When one end of the locking button (130) is inserted into the locking groove (131), the locking button (130) and the limiting structure (221) are engaged with each other to restrict the movement of the supporting section (220).

6. The multifunctional retractor for oral and maxillofacial surgery according to any one of claims 1 to 5, characterized in that, The handle (110) includes a front section (111) that is curved and placed in the oral cavity, and a rear section (112) for hand gripping. The area between the rear sections (112) of the two handles (110) is provided with a clamp handle locking member (150) for adjusting the degree of opening and closing of the handles (110). The thickness of the clamp handle locking member (150) does not exceed the thickness of the handle (110) to avoid interfering with the arrangement of the limiting channel (120).

7. The multifunctional retractor for oral and maxillofacial surgery according to any one of claims 3 to 5, characterized in that, The limiting structure (221) of the support section (220) is a sawtooth structure. When the locking button (130) is pressed, the locking button (130) passes through the locking slot (131) and engages with the limiting structure (221) to lock the tongue pressing portion (200) at a predetermined position.

8. The multifunctional oral and maxillofacial surgery retractor according to claim 6, characterized in that, The pliers handle locking member (150) is provided with two legs (151), any one of the legs (151) is connected to the adjacent handle (110), the two legs (151) are engaged with each other, and one of the legs (151) is equipped with a knob (152) for adjusting the length of the engaged portion, and the knob (152) adjusts the degree of opening and closing of the spreader by changing the distance between the two handles (110).

9. The multifunctional retractor for oral and maxillofacial surgery according to any one of claims 1 to 5, characterized in that, A transition portion (300) is installed on the surface of the opening portion (100), and the transition portion (300) is used to detachably fix the dental treatment instrument; The adapter portion (300) includes a slide (310) and a plurality of sliding limit holes (320) arranged thereon, and any of the sliding limit holes (320) is provided with a second locking member (350) for locking it on the slide (310), so that the sliding limit hole (320) can be fixed at a predetermined position when sliding on the slide (310).

10. The multifunctional retractor for oral and maxillofacial surgery according to claim 9, characterized in that, The slide (310) is fixed on the limiting channel (120) via a slide fixing member (360).

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