A malar fracture reduction clamping device

Abstract

The application relates to the technical field of maxillofacial surgery devices, in particular to a malar bone fracture reduction clamping device. The malar bone fracture reduction clamping device comprises a support, a first clamping assembly and a second clamping assembly, the support is in a rectangular frame structure, the first clamping assembly and the second clamping assembly are respectively connected to the rectangular frame, and first clamping parts and second clamping parts are respectively protruded from the same side of the support, the first clamping parts are used for abutting against temporal surfaces of malar bones, the second clamping parts are used for abutting against orbital surfaces of the malar bones, the first clamping parts and the second clamping parts cooperate to provide stable clamping force, realize multidirectional traction on the malar bone body, and realize clamping on the malar bone to assist in reduction, so that the operation is convenient, safe and stable.

Description

Technical Field

[0001] This application relates to the field of maxillofacial surgical devices, and in particular to a zygomatic bone fracture reduction and clamping device. Background Technology

[0002] The zygomatic bone is one of the facial bones, located in the front of the midface, below and lateral to the eye socket. It is irregularly rhomboid in shape and forms a bony prominence of the cheek. The zygomatic bone has four surfaces: the orbital surface, the temporal surface, the maxillary sinus surface, and the buccal surface. It connects to the frontal bone, maxilla, temporal bone, and greater wing of the sphenoid bone through four processes: the frontosphenoid process, the maxillary process, the temporal process, and the orbital process.

[0003] Zygomatic bone fracture is a common maxillofacial injury. The force of the injury primarily causes the zygomatic bone body to shift inward and / or backward and / or downward, often accompanied by rotational displacement, resulting in collapse and deformity of the zygomatic process. After a fracture, many patients experience functional impairments or cosmetic deformities such as diplopia, sunken eye sockets, step-like deformity of the orbital rim, retrusion of the eyeballs, limited mouth opening, and bilateral facial asymmetry. In severe cases, it can even lead to difficulty eating, significantly impacting the patient's quality of life. Therefore, surgical reduction and internal fixation are often necessary for patients with zygomatic bone fractures exhibiting the above-mentioned abnormalities.

[0004] Because the zygomatic bone has an irregular shape and connects internally to the maxilla, superiorly to the frontal bone, with the zygomatic arch connecting to the temporal bone and posteriorly to the greater wing of the sphenoid bone, in clinical practice, the reduction of a zygomatic bone fracture requires that all four displaced areas be well aligned and aligned. That is, the zygomatic bone-maxilla fracture end, the zygomatic bone-frontal bone fracture end, the zygomatic bone-temporal bone fracture end, and the zygomatic bone-sphenoid greater wing fracture end must all be reduced simultaneously in order to achieve better anatomical reduction and functional recovery.

[0005] To achieve proper reduction of the four fractured ends of the zygomatic bone during surgery, the bone must first be securely and stably clamped. Unlike other regular bones, the zygomatic bone has an irregular shape. Currently, there are no suitable surgical devices for clamping the zygomatic bone. The tools used for reducing zygomatic bone fractures mainly rely on hooks or pry bars to pull or pry out the sunken zygomatic bone before fixation. While these tools are effective, reduction surgery using pulling and prying motions is difficult, time-consuming, and laborious, posing a significant challenge to surgeons. Furthermore, pulling and prying motions can only achieve force and reduction in one direction, not in multiple directions. Therefore, it is often difficult to accurately reduce the four fractured ends of the zygomatic bone body during surgery, frequently leading to significant difficulties in the final fixation of the zygomatic bone due to inaccurate reduction. Some doctors have proposed using bone pins to penetrate the zygomatic bone body, or using screws (knives) drilled into the zygomatic bone body, using the method of pulling the bone pins or screws to enhance the clamping of the zygomatic bone body. However, this surgical approach has poor reduction and clamping effects, causes significant damage to the zygomatic bone body, and leaves puncture sites on the facial skin, affecting the patient's appearance.

[0006] With societal development, people have increasingly higher demands for facial appearance and health, and traditional surgical repositioning devices can no longer meet the needs of doctors and patients. Therefore, there is an urgent need to develop a non-invasive clamping tool that conforms to the shape of the cheekbone and can stably hold the cheekbone in order to achieve precise repositioning of the four broken ends of the cheekbone. Summary of the Invention

[0007] In view of the shortcomings of the prior art described above, the purpose of this application is to provide a zygomatic bone fracture reduction and clamping device. This device is used to solve the problems in the prior art.

[0008] Traditional clamping tools used in zygomatic bone fracture reduction surgery are difficult to operate, have a single direction of action, cause significant harm to the patient, and are prone to inaccurate and unstable reduction. The zygomatic bone fracture reduction clamping device described in this application can conform to the temporal and orbital surfaces of the zygomatic bone, providing stable clamping force and achieving multi-directional traction on the zygomatic bone body, ensuring convenient, safe, and stable surgery.

[0009] In zygomatic bone fracture reduction surgery, the zygomatic bone is usually clamped first and then clamped to the reduction site. When the zygomatic bone is clamped by a regularly shaped clamping tool, the irregular part cannot fit completely with the clamping part, leaving gaps. This causes the zygomatic bone to shake or fall out of the clamping tool during the clamping process, affecting the efficiency and safety of the surgery.

[0010] To address the aforementioned problems, this invention discloses a zygomatic bone fracture reduction and clamping device. The zygomatic bone fracture reduction and clamping device includes a bracket, a first clamping component, and a second clamping component. The bracket has a rectangular frame structure. The first clamping component and the second clamping component are respectively connected to the rectangular frame. The first clamping component and the second clamping component protrude from the same side of the bracket to form a first clamping part and a second clamping part, respectively. The first clamping part is used to abut against the temporal surface of the zygomatic bone, and the second clamping part is used to abut against the orbital surface of the zygomatic bone. The first clamping part and the second clamping part cooperate to clamp and fix the zygomatic bone from two opposing angles, thereby achieving clamping of the zygomatic bone and assisting in reduction.

[0011] Preferably, the rectangular frame consists of four frame columns that are connected sequentially and perpendicularly.

[0012] Preferably, the first clamping assembly includes a U-shaped clamping member, the U-shaped clamping member including a first extending arm, a second extending arm, and a connecting portion formed between the two, the first extending arm having a first limiting hole through which a frame column of the frame structure passes; a limiting rod protruding from the end of the first extending arm and perpendicular to it, and the limiting rod being parallel to the frame column through the first limiting hole; the limiting rod being used to pass through and limit the frame column so that the first clamping assembly can be moved along the frame column by adjusting the position of the limiting rod; the first clamping portion is disposed near the free end of the second extending arm.

[0013] Preferably, the second clamping assembly includes an L-shaped motion conductor, a translation adjustment assembly, an angle adjustment assembly, and a cheekbone-adaptive clamping member; the L-shaped motion conductor includes a third extension arm and a fourth extension arm connected in sequence, the third extension arm forming a second limiting hole for a frame column to pass through; the translation adjustment assembly is fixedly connected to the end of the fourth extension arm; the translation adjustment assembly is used to adjust the translation of the cheekbone-adaptive clamping member; the angle adjustment assembly is used to adjust the angle of the cheekbone-adaptive clamping member; the angle adjustment assembly is connected to the translation output shaft of the translation adjustment assembly, and the cheekbone-adaptive clamping member is disposed on the rotation output shaft of the angle adjustment assembly.

[0014] In this application, the U-shape refers to two extended arms bending on the same side to form two opposing open portions, with the middle portion connecting the two extended arms to form an arc or curved bottom, thus forming the letter U-shape.

[0015] In this application, the L-shape refers to two connected and mutually perpendicular extended arms, forming the letter L.

[0016] More preferably, the translation adjustment component is a mechanical transmission structure that converts rotation into linear motion.

[0017] In one specific embodiment, the translation adjustment assembly includes a first control element, a transmission screw, and a transmission nut. The first control element is fixedly connected to the transmission screw, and the transmission screw is fitted with a transmission nut. The transmission nut is fixedly connected to the angle adjustment assembly. When the first control element drives the transmission screw to rotate, the transmission screw drives the transmission nut to move along its axial direction, thereby driving the angle adjustment assembly to translate along the direction of the transmission screw.

[0018] More preferably, the angle adjustment assembly is a mechanical transmission structure that converts rotation in the first direction into rotation in the second direction.

[0019] In one specific embodiment, the angle adjustment component includes a second control element, a transmission component, a rotation output shaft, and a cheekbone adaptation clamping component. The transmission component includes a meshing worm gear and a worm. The second control element is fixedly connected to the worm. The rotation output shaft is fixedly connected to the worm gear and the cheekbone adaptation clamping component. When the second control element rotates the worm, the worm gear drives the worm gear to drive the rotation output shaft, thereby realizing the rotation of the cheekbone adaptation clamping component.

[0020] More preferably, the zygomatic bone fracture reduction clamping device further includes a fixing member; the fixing member matches the limiting rod to fix the limiting rod to the frame column.

[0021] Furthermore, the fastener includes one or more of the following: nut, screw, strap, and buckle.

[0022] In one specific embodiment, the fastener is a nut, and the limiting rod has a matching thread.

[0023] More preferably, the zygomatic bone fracture reduction and clamping device further includes a linkage assembly, which forms a lever structure. One end of the lever structure is gap-connected to one end of the connecting part of the U-shaped clamping member, and the other end of the lever structure is gap-connected to the fourth extension arm of the L-shaped motion transmission member. The fulcrum of the lever structure is located on the frame column of the frame structure. The rotation diameter of the lever structure is larger than that of the frame column of the frame structure. The first clamping assembly and the second clamping assembly are connected by the linkage assembly to move in opposite directions. For example, in a specific embodiment, when the first clamping assembly moves upward, the second clamping assembly moves downward synchronously. As long as the first clamping assembly is fixed, both the first clamping assembly and the second clamping assembly are fixed, so that after the first clamping assembly and the second clamping assembly are adjusted to fit and clamp the zygomatic bone, their positions can be conveniently and synchronously fixed, improving surgical efficiency.

[0024] Furthermore, the linkage assembly includes two connecting plates as levers, two sliders, and a rotating shaft as a rotation support shaft. The rotating shaft passes through the frame column of the frame structure. The two connecting plates are respectively located at both ends of the rotating shaft and on both sides of the frame column. The two sliders are slidably connected between the two connecting plates. The connecting part of the U-shaped clamp and the fourth extension arm of the L-shaped motion transmission member pass through and are confined on a slider, and are respectively connected to the slider with a gap.

[0025] Furthermore, each slider has sliding connection portions at both ends and a connecting shaft in the middle. The connecting shaft passes through the connecting portion of the U-shaped clamping member or the fourth extension arm of the L-shaped motion transmission member and is gap-connected. The sliding connection portions are correspondingly slidably connected to the connecting plate.

[0026] In one specific implementation, the two sliders are respectively positioned near the ends of the connecting plate.

[0027] In another specific embodiment, more preferably, the end of the third extension arm of the L-shaped motion guide is provided with a second limiting rod perpendicular to it, and the second limiting rod is parallel to the frame post through the second limiting hole; the second limiting rod is used to pass through and limit the frame post so that the second clamping assembly can be moved along the frame post by adjusting the position of the second limiting rod.

[0028] More preferably, the first clamping portion is sequentially formed with an arc-shaped separation section and an arc-shaped clamping section located at the end.

[0029] Furthermore, the arc-shaped clamping segment is used to match and clamp the zygomatic temporal surface, and the arc-shaped separating segment is used to separate the zygomatic bone from the facial soft tissue.

[0030] Furthermore, the clamping surface of the arc-shaped clamping segment and the zygomatic bone contact surface of the arc-shaped separating segment form the same smooth arc surface.

[0031] In one specific embodiment, the first clamping part enters the human body through an intraoral incision, so that the zygomatic bone contact surface of the arc-shaped separation segment is attached to the posteromedial surface of the zygomatic bone, and the clamping surface of the arc-shaped clamping segment is attached to the temporal surface of the zygomatic bone; the soft tissue contact surface of the arc-shaped separation segment is arc-shaped, which reduces the cutting friction of the tissue during the separation of facial soft tissue and zygomatic bone; the clamping surface of the arc-shaped clamping segment is attached to the temporal surface of the zygomatic bone, achieving a stable clamping effect on the irregular part of the zygomatic bone, laying the foundation for stability during subsequent multi-directional traction of the zygomatic bone.

[0032] The translation adjustment component allows the second clamping component to be adjusted for different application scenarios with different positions on the zygomatic orbital surface of different patients, so that the angle adjustment component is aligned with the irregular part that needs to be clamped, which is convenient to operate and widely applicable.

[0033] The angle adjustment component allows the second clamping component to be adjusted for different application scenarios with varying depths of protrusion and / or depression at the orbital surface of the zygomatic bone, so that the zygomatic bone-adaptive clamping component can be adjusted to fully fit the irregular shape that needs to be clamped, making it convenient to operate and widely applicable.

[0034] In one specific implementation, the first control unit controls the angle adjustment component to move along the transmission screw, so that the angle adjustment component is aligned with the orbital surface of the zygomatic bone, and can be adjusted according to the position of the orbital surface of the zygomatic bone of different patients; the second control unit controls the rotation of the zygomatic bone adaptation clamp, so that the zygomatic bone adaptation clamp completely fits the orbital surface of the zygomatic bone, and can be adjusted according to the specific shape of the orbital surface of the zygomatic bone of different patients to achieve stable clamping.

[0035] Furthermore, the first control element and / or the second control element includes one or more of the following: a knob, a switch, a lever, and a gear. Specifically, the first control element and the second control element are knobs.

[0036] Furthermore, the zygomatic bone adapting clamp includes a swing body with a receiving cavity, the swing body being fixedly connected to the rotating output shaft for synchronous rotation; the zygomatic bone adapting clamp also includes several abutment pins that can partially expose the receiving cavity and are used to contact the orbital surface of the zygomatic bone for clamping, and several limiting particles disposed in the receiving cavity for limiting the abutment pins, and several through holes are formed on the cavity of the receiving cavity for the abutment pins to be exposed.

[0037] Furthermore, the portion of the abutment pin not exposed in the receiving cavity has a radially protruding limiting portion.

[0038] Furthermore, the tip of the abutment needle is held against the zygomatic orbital surface, thereby moving axially toward the receiving cavity until the tail end or tail portion of the abutment needle abuts against the limiting particle and is confined within the receiving cavity, thereby terminating the axial movement of the abutment needle and fixing the abutment needle. The end face of the tip of the abutment needle forms a curved surface that matches the irregular structure of the zygomatic orbital surface.

[0039] Furthermore, the axial lengths of the abutment pins are consistent.

[0040] In one specific implementation, the first control component adjusts the angle adjustment assembly so that the abutment pin aligns with the incision at the lower edge of the orbit. The second control component controls the rotation of the zygomatic bone adaptation clamping component so that the abutment pin contacts the orbital surface of the zygomatic bone through the incision at the lower edge of the orbit. When the abutment pin contacts the orbital surface of the zygomatic bone, it is compressed and extends within the receiving cavity, further squeezing the limiting particles in the receiving cavity until the abutment pin is completely fitted to the orbital surface of the zygomatic bone, while the limiting particles in the receiving cavity are tightly pressed against each other and cannot generate relative movement. The abutment pin conforms to the contour of the orbital surface of the zygomatic bone, achieving self-adaptation to irregularities of the zygomatic bone and providing stable clamping force. In addition, the limiting particles, receiving cavity, and abutment pin are made of materials with high hardness, making it difficult for the limiting particles, receiving cavity, and abutment pin to undergo elastic deformation under force. This prevents slippage or loosening when clamping the zygomatic bone during the operation, ensuring the safety, stability, and reliability of the surgery.

[0041] The zygomatic bone fracture reduction and clamping device provided by the present invention has the following beneficial effects:

[0042] 1) In this invention, the curve of the first clamping part in the first clamping component fits the temporal surface and orbital surface of the zygomatic bone, thereby achieving a stable clamping effect on the irregular part of the zygomatic bone.

[0043] 2) The second clamping component in this invention can adapt to different patients’ zygomatic orbital surface positions and / or shapes through translation adjustment component and angle adjustment component, which can increase the clamping contact area. After the contact surface is adjusted, the locking abutment needle and limiting particle can provide a stable clamping force.

[0044] 3) The linkage assembly described in this invention enables the first clamping assembly and the second clamping assembly to work together. By fixing the position of one of them, the entire device can be fixed, making it easier to achieve the clamping and clamping function.

[0045] 4) In this invention, the first clamping component and the second clamping component clamp the zygomatic bone deformity from the inside and outside respectively, so as to achieve "surface" contact with the zygomatic bone deformity, and achieve a stable and firm clamping effect. This facilitates stable and precise traction of the zygomatic bone in multiple directions such as upward, forward and outward during subsequent surgery, thereby improving the accuracy, safety and efficiency of zygomatic bone repositioning.

[0046] 5) The zygomatic bone fracture reduction and clamping device described in this invention fills the gap in current surgical instruments for maxillofacial trauma surgery that enter the zygomatic bone fracture site through an intraoral incision or an incision at the lower edge of the orbit and clamp the zygomatic bone. Attached Figure Description

[0047] Figure 1 The diagram shown is a schematic representation of the cheekbone described in this application.

[0048] Figure 2 This is a schematic diagram showing the location of the zygomatic bone in the skull as described in this application.

[0049] Figure 3 The diagram shown is a schematic representation of the overall structure of the zygomatic bone fracture reduction clamping device described in this application.

[0050] Figure 4 The diagram shows the overall structure of the zygomatic bone fracture reduction clamping device described in this application in another state.

[0051] Figure 5 The diagram shown is a structural schematic of the bracket and the connecting rod assembly described in this application.

[0052] Figure 6 The diagram shown is a structural schematic of a frame column of this application.

[0053] Figure 7 The diagram shown is a structural schematic of the first clamping component of this application.

[0054] Figure 8 The diagram shown is a structural schematic of the second clamping component of this application.

[0055] Figure 9 The diagram shown is a structural schematic of the cheekbone-adaptive clamping device described in this application.

[0056] Figure 10 The diagram shows a simulated image of the zygomatic bone fracture reduction clamping device described in this application clamping the zygomatic bone.

[0057] Figure 11 The image shown is a simulated schematic diagram of another perspective of the zygomatic bone fracture reduction clamping device described in this application clamping the zygomatic bone.

[0058] Explanation of icon numbers

[0059] 10 Bracket, 11 Frame Column, 111 First Through Hole, 12 Second Through Hole, 20 First Clamping Assembly, 21 Limiting Rod, 22 First Extension Arm, 221 First Limiting Hole, 23 Connecting Part, 231 Third Through Hole, 24 Second Extension Arm, 241 Arc-shaped Separation Section, 242 Arc-shaped Clamping Section, 30 Second Clamping Assembly, 31 Third Extension Arm, 311 Second Limiting Hole, 32 Fourth Extension Arm, 321 Fourth Through Hole, 33 Translation Adjustment Assembly, 331 First Control Component, 332 Translation Output Shaft, 34 Angle Adjustment Assembly, 341 Second Control Component, 342 Rotation Output Shaft, 35 Cheekbone Adaptive Clamping Component, 351 Swinging Body, 3511 Accommodating Cavity, 352 Abutting Pin, 353 Limiting Particle, 40 Linkage Assembly, 41 Connecting Plate, 411 Fifth Through Hole, 42 Slider, 50 Fixing Component, a Cheekbone Orbital Surface, b Cheekbone Temporal Surface. Detailed Implementation

[0060] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0061] It should be noted that the process equipment or apparatus not specifically mentioned in the following embodiments are all conventional equipment or apparatus in the art.

[0062] The structures, proportions, and sizes depicted in the accompanying drawings are solely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the scope of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this application, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application's implementation.

[0063] Furthermore, it should be understood that the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, does not preclude the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, unless otherwise stated. It should also be understood that the combined connection relationship between one or more components / devices mentioned in this invention does not preclude the existence of other devices / devices before or after the combined components / devices, or the insertion of other components / devices between these explicitly mentioned components / devices, unless otherwise stated. Moreover, unless otherwise stated, the numbering of each method step is merely a convenient tool for identifying each method step, and not for limiting the order of the method steps or limiting the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0064] To address the problem of stable clamping in existing zygomatic bone fracture reduction surgery, this application provides a zygomatic bone fracture reduction clamping device. This device can match the irregular shape of the zygomatic bone to achieve stable clamping. Specifically, the device conforms to the orbital and temporal surfaces of the zygomatic bone, providing stable clamping force and achieving multi-directional traction on the zygomatic bone body, ensuring convenient, safe, and stable surgery.

[0065] In a specific embodiment of a zygomatic bone fracture reduction clamping device, such as Figures 1-9 As shown, the zygomatic bone fracture reduction and clamping device includes a bracket 10, a first clamping component 20, and a second clamping component 30. The bracket 10 has a rectangular frame structure. The first clamping component 20 and the second clamping component 30 are respectively connected to the rectangular frame. The first clamping component 20 and the second clamping component 30 respectively protrude from the same side of the bracket 10 to form a first clamping part and a second clamping part. The first clamping part is used to abut against the temporal surface b of the zygomatic bone, and the second clamping part is used to abut against the orbital surface a of the zygomatic bone. The first clamping part and the second clamping part cooperate to clamp and fix the zygomatic bone from two opposing angles, thereby achieving clamping of the zygomatic bone and assisting in reduction. Further, the abutting surface formed by the first clamping part matches the temporal surface b of the zygomatic bone; the abutting surface formed by the second clamping part matches the orbital surface a of the zygomatic bone. By using two specifically matched clamping parts, the zygomatic bone with curved or irregular concave-convex structures can be clamped in a coordinated manner to assist in zygomatic bone reduction.

[0066] In a like Figures 3-6In the specific embodiment shown, the rectangular frame consists of four sequentially connected and perpendicular frame columns 11a, 11b, 11c, and 11d. The rectangular frame limits, fixes, and supports the movement of the first clamping assembly 20 and the second clamping assembly 30, making the zygomatic bone fracture reduction device stable and controllable during operation.

[0067] In a specific embodiment, such as Figure 3 , 4 As shown in Figure 7, the first clamping assembly 20 includes a U-shaped clamping member, which includes a first extending arm 22, a second extending arm 24, and a connecting portion 23 formed between the two. The first extending arm 22 has a first limiting hole 221 through which a frame column 11a of the frame structure passes. A limiting rod 21 perpendicular to the end of the first extending arm 22 is formed, and the limiting rod 21 is parallel to the frame column 11a through which the first limiting hole 221 passes. The limiting rod 21 is used to pass through and limit the frame column 11a so that the first clamping assembly 20 can move accordingly along the frame column 11a by adjusting the limiting position of the limiting rod 21. The first clamping portion is disposed near the free end of the second extending arm 24. Specifically, if the movement along the frame post 11a that passes through the first limiting hole 221 is set to be vertical (or z-direction), then the limiting position of the limiting rod 21 changes the vertical movement position of the first clamping assembly 20 along the frame post 11, thereby changing the degree to which the first clamping part protrudes from the bracket 10. Further, in Figure 3 , 4 As shown in Figure 7, one end of the limiting rod 21 is connected to the first extending arm 22. It can be connected to the end or any position near the end, and can be adjusted according to the specific structural space size of the skull or zygomatic bone. The limiting rod 21 can extend and protrude towards 11c or towards 11d, and further as... Figure 3 , 4 In a more preferred embodiment shown in 7, the limiting rod 21 extends and protrudes toward 11c.

[0068] In some such Figure 3 , 4 In the embodiment shown in Figure 7, a first clamping portion is formed on the second extension arm 24 of the U-shaped clamping member, and the second extension arm protrudes from the bracket 10. In some further embodiments, the second extension arm 24 is arranged substantially parallel to the frame column 11d, and its free end is located close to 11b. That is, the opening direction of the U-shaped clamping member faces the frame column 11b.

[0069] In this application, the U-shape refers to two extension arms bending on the same side to form two opposing open portions, with the middle portion connecting the two extension arms to form an arc or curved bottom, thus forming a letter U shape or a similar letter U shape; the lengths of the two extension arms may be the same or different.

[0070] In a more specific embodiment, such as Figure 3 , 4 As shown in Figure 7, the first clamping portion sequentially forms an arc-shaped separating section 241 and an arc-shaped clamping section 242 located at the end. Further, in a specific embodiment, as... Figure 3 , 4 As shown in Figure 7, the arc-shaped clamping segment 242 is used for matching and clamping the zygomatic temporal surface, and the arc-shaped separating segment 241 is used for separating the zygomatic bone from the facial soft tissue. Further, in a specific embodiment, as... Figure 3 , 4 As shown in Figure 7, the clamping surface of the arc-shaped clamping section 242 and the zygomatic bone contact surface of the arc-shaped separating section 241 form the same smooth arc surface. This feature enables a smooth transition of the entire first clamping part, thereby facilitating actual operation. In a case such as Figure 3 , 4 In the specific embodiment shown in Figure 7, during actual use, the first clamping part extends into the oral cavity, and then enters the facial tissue through an incision inside the oral cavity (an incision already made during the operation and close to the zygomatic bone) until the arc-shaped clamping segment 242 fits against the temporal surface of the zygomatic bone b. At this time, the arc-shaped separating segment 241 is used to separate the facial soft tissue near the clamping point, making it separate from the temporal surface of the zygomatic bone. In a specific embodiment, the facial tissue contact surface of the arc-shaped separating segment 241 is a smooth arc surface, which reduces the cutting friction on the tissue during the tissue separation process when it contacts the facial soft tissue. The clamping surface of the arc-shaped clamping segment 242 matches and fits against the arc surface of the temporal surface of the zygomatic bone b, achieving complete fit against the temporal surface of the zygomatic bone b, achieving a stable clamping effect on the irregular part of the zygomatic bone, and laying the foundation for stability during subsequent multi-directional traction of the zygomatic bone.

[0071] In a more specific embodiment, such as Figures 3-4 As shown, the zygomatic bone fracture reduction and clamping device further includes a fixation member 50; the fixation member 50 matches the limiting rod 21 to fix the limiting rod 21 to the frame column 11c. In a more specific embodiment, as Figures 3-5 As shown, a first through hole 111 is formed on the frame column 11c for the limiting rod 21 to pass through. Further, the fastener 50 includes one or more of a nut, screw, strap, and buckle. In a... Figures 3-4 In the specific embodiment shown, the fixing member 50 is a nut, and the limiting rod 21 has a matching thread. In one specific embodiment, such as Figure 3 , 4 As shown in Figure 8, the second clamping assembly 30 includes an L-shaped motion conductor, a translation adjustment assembly 33, an angle adjustment assembly 34, and a cheekbone-adaptive clamping member 35. The L-shaped motion conductor includes a third extension arm 31 and a fourth extension arm 32 connected in sequence. The third extension arm 31 forms a second limiting hole 311 through which a frame post 11b passes. The translation adjustment assembly 33 is fixedly connected to the end of the fourth extension arm 32. The translation adjustment assembly 33 is used to adjust the translation of the cheekbone-adaptive clamping member 35. The angle adjustment assembly 34 is used to adjust the angle of the cheekbone-adaptive clamping member 35. The angle adjustment assembly 34 is connected to the translation output shaft 332 of the translation adjustment assembly 33, and the cheekbone-adaptive clamping member 35 is disposed on the rotation output shaft 342 of the angle adjustment assembly 34. In some more specific embodiments, if it is assumed that the frame post 11d is in the y-direction, the translation is a linear movement parallel to the y-direction. In some more specific embodiments, the translation output shaft 332 is arranged parallel to the x-direction (the x-direction and y-direction are in the same plane and perpendicular to each other); thereby the angle adjustment component 34 controls the cheekbone adaptation clamp 35 to swing slightly with the translation output shaft 332 as the rotation axis.

[0072] In this application, the L-shape refers to two connected and mutually perpendicular or nearly perpendicular extended arms, with the overall outline presenting a letter L shape or a near L shape; the connection point can also form a smooth transition or a rounded corner transition to avoid the generation of sharp edges.

[0073] The translation adjustment component 33 in this application only needs to achieve the above-mentioned functions and effects, and can be implemented using a mechanical transmission structure commonly used in the prior art to convert rotation into linear motion. More specifically, it converts the rotation of an axis parallel to the y-direction into linear motion along a direction parallel to the y-direction. To further achieve this effect, in a more specific embodiment, such as... Figure 3 , 4 As shown in Figure 8, the translation adjustment component 33 is a screw drive structure. The translation adjustment component 33 includes a first control element 331, a transmission screw parallel to the y-direction, and a transmission nut. The first control element 331 is fixedly connected to the transmission screw, and the transmission screw is fitted with a transmission nut. The transmission nut is fixedly connected to the translation output shaft 332. When the first control element 331 drives the transmission screw to rotate, the transmission screw drives the transmission nut to move linearly along a direction parallel to the y-direction, thereby driving the angle adjustment component 34 to move linearly along a direction parallel to the y-direction. In a further embodiment, as... Figure 3 , 4 As shown in Figure 8, the translation adjustment component 33 is an X-axis displacement platform LX25-L.

[0074] The angle adjustment component 34 in this application only needs to achieve the above-mentioned functions and effects. It can be implemented using a common mechanical transmission structure in the prior art that converts rotation in the first direction into rotation in the second direction, such as a worm gear drive, gear drive, or flexible hinge drive. More specifically, the first direction rotation is rotation about an axis parallel to the y-direction, and the second direction rotation is rotation about an axis parallel to the x-direction. In a more specific embodiment, such as... Figure 3 , 4 As shown in Figure 8, the angle adjustment assembly 34 includes a second control element 341, a transmission assembly, and a rotation output shaft 342. The transmission assembly includes a meshing worm gear and a worm. The second control element 341 is fixedly connected to the worm, which is parallel to the y-direction. The rotation output shaft 342 is fixedly connected to the worm gear and the zygomatic bone adaptation clamping member 35. When the second control element 341 drives the worm to rotate on an axis parallel to the x-direction, the worm gear drives the worm gear to drive the rotation output shaft 342, thereby enabling the zygomatic bone adaptation clamping member 35 to rotate on an axis parallel to the x-direction. In a further embodiment, as... Figure 3 , 4 As shown in Figure 8, the angle adjustment component 34 is an XY-axis manual angle measuring slide GFG25-20.

[0075] In a more specific embodiment, such as Figures 3-6 As shown, the zygomatic bone fracture reduction clamping device further includes a connecting rod assembly 40, which forms a lever structure. One end of the lever structure is gap-connected to the connecting portion 23 of the U-shaped clamping member, and the other end of the lever structure is gap-connected to the fourth extension arm 32 of the L-shaped motion transmission member. The fulcrum of the lever structure is located on the frame column 11d of the frame structure. The rotation diameter of the lever structure is greater than the length of the frame column 11d of the frame structure. The first clamping assembly 20 and the second clamping assembly 30 are connected by the connecting rod assembly 40 to move in opposite directions. The gap connection in this application is specifically a hole-shaft gap connection.

[0076] In a like Figures 3-6 In the specific embodiment shown, the aforementioned reverse linkage in this application means that when the first clamping component 20 moves upward (i.e., moves in the z-direction, causing the first clamping part to approach the support 10), the second clamping component 30 moves downward synchronously (i.e., the second clamping part moves away from the support 10). Furthermore, as long as the first clamping component 20 is fixed, both the first clamping component 20 and the second clamping component 30 are fixed. This allows the first clamping component 20 and the second clamping component 30 to be conveniently and synchronously fixed in position after adjusting their positions to fit and clamp the zygomatic bone, improving surgical efficiency.

[0077] In another specific embodiment, the end of the third extension arm 31 of the L-shaped motion conductor protrudes to form a second limiting rod perpendicular to it, and the second limiting rod is parallel to the frame post 11d for passing through the second limiting hole 311; the second limiting rod is used to pass through and limit the frame post 11a so that the second clamping assembly 30 can be moved along the frame post 11d by adjusting the position of the second limiting rod, so as to adjust the position of the second clamping assembly individually.

[0078] Furthermore, in one specific embodiment, such as Figures 3-8 As shown, the linkage assembly 40 includes two connecting plates 41 as levers, two sliders 42, and a rotating shaft as a rotation support shaft. The rotating shaft passes through the frame column 11d of the frame structure. The two connecting plates 41 are respectively located at both ends of the rotating shaft and on both sides of the frame column 11d. The two sliders 42 are slidably connected between the two connecting plates 41. The connecting part 23 of the U-shaped clamp and the fourth extension arm 32 of the L-shaped motion transmission member pass through and are limited on a slider 42, and are respectively connected to the slider 42 through the hole shaft clearance.

[0079] Furthermore, in one specific embodiment, such as Figures 3-8 As shown, both ends of any slider have sliding connection parts and a connecting shaft is formed in the middle. The connecting shaft passes through the connecting part 23 of the U-shaped clamping member or the fourth extension arm 32 of the L-shaped motion transmission member and is connected by a hole-shaft gap. The sliding connection parts are slidably connected to the connecting plate 41.

[0080] In a like Figures 3-8 In the specific embodiment shown, a second through hole 12 for the rotating shaft to pass through is formed on the frame column 11d; a third through hole 231 for the connecting shaft to pass through is formed on the connecting part 23; a fourth through hole 321 for the connecting shaft to pass through is formed on the fourth extension arm 32; a fifth through hole 411 for the rotating shaft to pass through is formed on the connecting plate 41; the gap connection is a hole-shaft gap connection; and a sliding groove for matching the connecting plate 41 to achieve a sliding connection is formed on the sliding connection part.

[0081] In a like Figures 3-5 In the specific embodiment shown, the two sliders 42 are respectively positioned near the ends of the connecting plate 41.

[0082] The translation adjustment component 33 allows the second clamping component 30 to be adjusted for different application scenarios with different positions of the zygomatic orbital surface a of different patients, so that the angle adjustment component 34 is aligned with the irregular part that needs to be clamped, which is convenient to operate and widely applicable.

[0083] The angle adjustment component 34 enables the second clamping component 30 to be adjusted for different patients with different zygomatic orbital surface a shapes, i.e., different protrusion and / or depression depths, so that the zygomatic bone adaptation clamping component 35 can be adjusted to fully fit the irregular shape that needs to be clamped, making it convenient to operate and widely applicable.

[0084] In a like Figure 3 and 8 In the specific embodiment shown, the first control unit controls the angle adjustment component 34 to move linearly along the y-direction parallel to the zygomatic orbital surface a, so that the angle adjustment component 34 is aligned with the zygomatic orbital surface a, and can be adjusted according to the position of the zygomatic orbital surface a of different patients; the second control unit controls the zygomatic bone adaptation clamping component 35 to swing (the specific direction of movement is as follows). Figure 4 As indicated by the movement arrow, the zygomatic bone adaptation clamp 35 is made to fully conform to the zygomatic bone orbital surface a, and can be adjusted according to the specific shape of the zygomatic bone orbital surface of different patients to achieve stable clamping.

[0085] Furthermore, in a specific embodiment, such as Figure 3 , 4 As shown in Figure 8, the first control element 331 and / or the second control element 341 include one or more of the following: knob, switch, lever, gear.

[0086] In a like Figure 3 and 7 In the specific embodiments shown in ~8, the first control element and the second control element are knobs.

[0087] Furthermore, in a specific embodiment, such as Figures 3-4 As shown in Figures 8 and 9, the zygomatic bone adaptation clamp 35 includes a swing body 351 with a receiving cavity 3511. The swing body 351 is fixedly connected to the rotating output shaft 342 for synchronous rotation. The zygomatic bone adaptation clamp 35 also includes several abutment pins 352 that are partially exposed in the receiving cavity 3511 and used to contact the orbital surface of the zygomatic bone for clamping, and several limiting particles 353 disposed in the receiving cavity 3511 for limiting the abutment pins 352. Several through holes are formed on the cavity of the receiving cavity 3511 to expose the abutment pins 352. Preferably, the diameter of the through hole is larger than but close to the diameter of the abutment pin 352, so that the abutment pin 352 can move axially in the through hole, but is not prone to circumferential shaking, ensuring the stability of the operation. At the same time, human tissue will not enter the zygomatic bone adaptation clamp 35 through the through hole, causing problems such as device jamming or difficulty in cleaning.

[0088] Furthermore, in a specific embodiment, such as Figures 3-4As shown in Figures 8 and 9, the head end of the abutment needle 352 is held by the zygomatic orbital surface a and moves axially toward the receiving cavity 3511 until the tail end or tail portion of the abutment needle 352 abuts against the limiting particle 353 and is limited to the receiving cavity 3511, thereby terminating the axial movement of the abutment needle 352 and fixing the abutment needle 352. The end face of the head end of the abutment needle 352 forms a curved surface that matches the irregular structure of the zygomatic orbital surface a.

[0089] Furthermore, in a specific embodiment, such as Figures 3-4 As shown in Figures 8 and 9, the axial length of the abutment pin 352 is consistent.

[0090] The accommodating cavity 3511 is used to provide accommodating space. In some specific embodiments, the accommodating cavity 5311 can be a hollow cylinder, a hollow cuboid, or a hollow cube. In a specific example... Figures 8-9 In the illustrated embodiment, the accommodating cavity 5311 is a cylinder with a diameter of 0.6–1.5 cm and a height of 0.6–1.5 cm. In a specific accommodating cavity, its diameter is 1 cm and its height is 1.2 cm. The swing body 351 serves as a motion conductor for fixedly connecting the rotating output shaft. The abutment pin 352 is used to form the abutment surface of the zygomatic orbital surface a, and its shape, number, and size can be adjusted arbitrarily according to surgical needs. In a specific embodiment, such as… Figures 8-9 In the illustrated embodiment, the abutment pins 352 have a diameter of 0.6–1.5 mm, a length of 0.6–1.5 cm, and a quantity of 18–30. In a specific example… Figures 8-9 In the illustrated embodiment, the abutment pin 352 is made of stainless steel, has a diameter of 1 mm, a length of 1 cm, and a quantity of 23 pins. The limiting particles 353 are used to limit the abutment pins 352 so that they are fixed in a fixed position after forming an abutment surface on the zygomatic orbital surface a. The material, quantity, and size of the limiting particles 353 can be adjusted arbitrarily according to surgical and production needs. The diameter of the limiting particles 353 is 0.6–1.5 mm, and the quantity is 200–300 particles. In a... Figure 9 In the specific embodiment shown, the limiting particles 353 are stainless steel balls with a diameter of 1 mm, and there are 250 of them. The stainless steel abutment pins 352 and limiting particles 353 meet surgical safety standards and are not easily deformed by elasticity. When clamping the cheekbone during the surgical procedure, the abutment pins 352 and limiting particles 353 are not easily deformed by elasticity, making it difficult for the cheekbone-adaptive clamping component 35 to slip off or loosen, thus ensuring the safety, stability and reliability of the surgery.

[0091] Furthermore, in a specific embodiment, such as Figures 3-4As shown in Figures 8 and 9, a radially protruding limiting portion is formed on the portion of the abutment pin 352 that does not protrude from the receiving cavity 3511. The limiting portion can be formed on any portion of the abutment pin 352 that does not protrude from the receiving cavity 3511, as long as the abutment pin 352 does not completely leak out of the receiving cavity 3511. In a... Figure 7 In the specific embodiment shown, the limiting portion is formed at the end of the abutment pin 352.

[0092] In one specific embodiment, the first control element 331 adjusts the angle adjustment component 34 so that the abutment pin 352 aligns with the incision at the lower edge of the eye socket. The second control element controls the rotation of the zygomatic bone adaptation clamping component 35 so that the abutment pin 352 contacts the zygomatic bone orbital surface b through the incision at the lower edge of the eye socket. When the abutment pin 352 contacts the zygomatic bone orbital surface a, it is compressed and extends within the receiving cavity 3511, further squeezing the limiting particles 353 in the receiving cavity 3511 until the abutment pin 352 is completely fitted to the zygomatic bone orbital surface a. At the same time, the limiting particles 353 in the receiving cavity 3511 are fixed by the receiving cavity 3511 and pressed tightly against each other, preventing relative movement. Finally, the abutment pin 352 conforms to the contour of the zygomatic bone orbital surface a, achieving self-adaptation at the zygomatic bone orbital surface and providing stable clamping force.

[0093] In a like Figures 1-11 In the specific embodiment shown, the method of using the zygomatic fracture reduction device in zygomatic fracture reduction surgery includes the following steps:

[0094] 1) Before using the zygomatic bone fracture reduction device, make an incision inside the mouth and an incision at the lower edge of the orbit near the orbital surface of the zygomatic bone.

[0095] 2) The connecting part 21 is fitted into the first through hole 111, and the first clamping part is cut into the oral cavity through the incision and separates the facial soft tissue and cheekbone;

[0096] 4) Adjust the position of the first clamping part so that the arc-shaped clamping section 242 fits against the temporal surface b of the zygomatic bone, and one side of the arc-shaped separating section 241 fits against the posteromedial surface of the zygomatic bone.

[0097] 4) Operate the first control unit 331 to control the angle adjustment component 34 to translate until the abutment needle 352 is aligned with the incision at the lower edge of the eye socket;

[0098] 5) Operate the second control unit 341 to control the rotation of the cheekbone adaptation clamp 35, so that the abutting pin 352 presses against the cheekbone orbital surface a through the lower edge of the eye socket, and further adjust until the abutting pin 352 completely fits the contour of the cheekbone orbital surface and the limiting particles 353 are pressed tightly against each other and cannot produce relative movement.

[0099] 6) Keep the positions of the first clamping component 20 and the second clamping component 30 maintained, and fix the connecting part 21 to the frame column 11 by the fastener 50, so that the first clamping component 20 and the second clamping component 30 clamp the cheekbone and there is no relative movement between them and the bracket 10.

[0100] 7) The traction bracket 10 is pulled so that the zygomatic bone held by the zygomatic bone fracture reduction device moves upward and / or forward and / or outward (with the human body structure as the coordinate system) until the fracture is reduced;

[0101] 8) After the fracture site is reduced, the zygomatic bone is fixed by implanting titanium screws and titanium plates to complete the reduction;

[0102] 9) Remove the fixation member 50, release the fixation between the first clamping component 20 and the second clamping component 30 and the bracket 10, slowly remove the first clamping part from the incision inside the mouth, move the abutting needle 352 away from the incision at the lower edge of the orbit, and release the clamping of the zygomatic bone fracture reduction device on the zygomatic bone.

[0103] In the zygomatic bone fracture reduction clamping device of the present invention, the first clamping component and the second clamping component clamp the zygomatic bone deformity from the inside and outside respectively, so as to achieve "surface" contact with the zygomatic bone deformity, thereby achieving a stable and firm clamping effect. This facilitates stable and precise traction of the zygomatic bone in multiple directions such as upward, forward, and outward during subsequent surgery, thereby improving the accuracy, safety, and efficiency of zygomatic bone reduction.

[0104] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0105] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A zygomatic bone fracture reduction and clamping device, characterized in that, The device includes a support (10), a first clamping component (20), and a second clamping component (30). The support (10) has a rectangular frame structure. The first clamping component (20) and the second clamping component (30) are respectively connected to the rectangular frame. The first clamping component (20) and the second clamping component (30) protrude from the same side of the support (10) to form a first clamping part and a second clamping part. The first clamping part is used to abut against the temporal surface of the zygomatic bone, and the second clamping part is used to abut against the orbital surface of the zygomatic bone. The first clamping part and the second clamping part cooperate to clamp the zygomatic bone to assist in repositioning. The first clamping assembly (20) includes a U-shaped clamping member, which includes a first extension arm (22), a second extension arm (24), and a connecting portion (23) formed between the two. The first extension arm (22) has a first limiting hole (221) through which a frame column of the frame structure passes. A limiting rod (21) protrudes from the end of the first extension arm (22) and is perpendicular to it. The limiting rod (21) is parallel to the frame column through which the first limiting hole (221) passes. The limiting rod (21) passes through and is limited on the frame column so that the first clamping assembly (20) can move along the frame column by adjusting the position of the limiting rod (21). The first clamping portion is disposed near the free end of the second extension arm (24). The second clamping assembly (30) includes an L-shaped motion conductor, a translation adjustment assembly (33), an angle adjustment assembly (34), and a zygomatic bone adaptation clamping member (35); the L-shaped motion conductor includes a third extension arm (31) and a fourth extension arm (32) connected in sequence, the third extension arm (31) forming a second limiting hole (311) through which a frame column passes; the translation adjustment assembly (33) is fixedly connected to the end of the fourth extension arm (32); the translation adjustment assembly (33) is used to adjust the translation of the zygomatic bone adaptation clamping member (35); the angle adjustment assembly (34) is used to adjust the angle of the zygomatic bone adaptation clamping member (35); the angle adjustment assembly (34) is connected to the translation output shaft (332) of the translation adjustment assembly (33), and the zygomatic bone adaptation clamping member (35) is connected to the rotation output shaft (342) of the angle adjustment assembly (34).

2. The zygomatic bone fracture reduction and clamping device according to claim 1, characterized in that, The translation adjustment component (33) is a mechanical transmission structure that converts rotation into linear motion; And / or, the angle adjustment component (34) is a mechanical transmission structure that converts rotation in the first direction into rotation in the second direction; And / or, the zygomatic fracture reduction clamping device further includes a fixation member (50) that matches a limiting rod (21) to fix the limiting rod (21) to the frame column.

3. The zygomatic bone fracture reduction and clamping device according to claim 1, characterized in that, The zygomatic bone fracture reduction clamping device also includes a linkage assembly (40), which forms a lever structure. One end of the lever structure is gap-connected to one end of the connecting part (23) of the U-shaped clamping member, and the other end of the lever structure is gap-connected to the fourth extension arm (32) of the L-shaped motion transmission member. The fulcrum of the lever structure is located on the frame column of the frame structure. The rotation diameter of the lever structure is larger than that of the frame column of the frame structure. The first clamping assembly (20) and the second clamping assembly (30) are connected by the linkage assembly (40) to move in opposite directions. And / or, the end of the third extension arm (31) of the L-shaped motion conductor protrudes to form a second limiting rod perpendicular to it, and the second limiting rod is parallel to the frame post for passing through the second limiting hole (311); the second limiting rod is used to pass through and limit on the frame post so that the second clamping assembly (30) can be moved along the frame post by adjusting the position of the second limiting rod.

4. The zygomatic bone fracture reduction and clamping device according to claim 3, characterized in that, The linkage assembly (40) includes two connecting plates (41) as levers, two sliders (42) and a rotating shaft as a rotation support shaft. The rotating shaft passes through the frame column of the frame structure. The two connecting plates (41) are respectively located at both ends of the rotating shaft and on both sides of the frame column. The two sliders (42) are slidably connected between the two connecting plates (41). The connecting part (23) of the U-shaped clamp and the fourth extension arm (32) of the L-shaped motion transmission member pass through and are limited on a slider (42), and are respectively connected to the slider (42) with a gap.

5. The zygomatic bone fracture reduction and clamping device according to claim 4, characterized in that, The two ends of the arbitrary slider (42) are formed with sliding connection parts (4211) and the middle is formed with a connecting shaft. The connecting shaft passes through the connecting part (23) of the U-shaped clamp or the fourth extension arm (32) of the L-shaped motion conductor and is connected with a gap. The sliding connection parts are slidably connected to the connecting plate (41).

6. The zygomatic bone fracture reduction and clamping device according to claim 1, characterized in that, The first clamping part is sequentially formed with an arc-shaped separation section (241) and an arc-shaped clamping section (242) located at the end.

7. The zygomatic bone fracture reduction and clamping device according to claim 6, characterized in that, The arc-shaped clamping section (242) is used to match and clamp the temporal surface of the zygomatic bone, and the arc-shaped separating section (241) is used to separate the zygomatic bone from the facial soft tissue; And / or, the clamping surface of the arc-shaped clamping segment (242) and the zygomatic contact surface of the arc-shaped separating segment (241) form the same smooth arc surface.

8. The zygomatic bone fracture reduction and clamping device according to claim 1, characterized in that, The cheekbone adaptation clamp (35) includes a swing body (351) having a receiving cavity (3511), the swing body (351) being fixedly connected to the rotating output shaft (342) for synchronous rotation; The zygomatic bone adaptation clamp (35) further includes several abutment pins (352) that can partially expose the accommodating cavity (3511) and are used for contacting the zygomatic bone orbital surface at their tips for clamping, and several limiting particles (353) disposed in the accommodating cavity (3511) for limiting the abutment pins (352). Several through holes are formed on the cavity of the accommodating cavity (3511) for the abutment pins to be exposed.

9. The zygomatic bone fracture reduction and clamping device according to claim 8, characterized in that, The portion of the abutment pin (352) that is not exposed in the receiving cavity (3511) has a radially protruding limiting portion; And / or, the head end of the abutment needle (352) is held against the zygomatic orbital surface and moves axially toward the receiving cavity (3511) until the tail end or tail portion of the abutment needle (352) abuts against the limiting particle (353) and is limited to the receiving cavity (3511), so as to terminate the axial movement of the abutment needle (352) and fix the abutment needle (352). The end face of the head end of the abutment needle (352) forms a curved surface that matches the irregular structure of the zygomatic orbital surface. And / or, the axial length of the abutment pin (352) is consistent.

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