Detachable alveolar bone retractor

Abstract

The invention relates to the field of alveolar bone groove treatment, in particular to an alveolar bone detachable traction device which comprises a traction frame body, a first traction piece, a second traction piece, a driving assembly and a self-locking piece. The first traction piece is arranged on the traction frame body, the second traction piece is arranged on the traction frame body, and the second traction piece can move along the traction frame body so as to be close to the first traction piece. The driving assembly is used for driving the second traction piece to move. The self-locking piece and the second traction piece are in transmission connection through the driving assembly, and the second traction piece is prevented from moving in the direction away from the first traction piece by limiting movement of the driving assembly. After the arrangement of the traction device is completed, the driving assembly is controlled to drive the second traction piece to move towards the first traction piece along the traction frame body, so that the cut jaw bone can be pulled, and the trend of generating new osteogenesis is formed. In the operation process, the self-locking piece can limit the driving direction of the driving assembly, and therefore the movement direction of the second traction piece is limited.

Description

Technical Field

[0001] This patent relates to the field of oral surgery and plastic surgery medical devices, and in particular to an alveolar bone detachable retractor. Background Art

[0002] The alveolar bone is the part of the maxillary and mandibular bones that surrounds and supports the tooth roots, also known as the alveolar process. The tissue structure of the alveolar bone is similar to that of other bones in the body, but it is highly plastic and is one of the most active parts of the human skeleton. The growth and development of the alveolar bone depends on the functional stimulation of the teeth. When the teeth erupt, the alveolar bone begins to form and gradually increases in height, providing a bony attachment surface for the forming periodontal ligament. However, when the teeth are lost, the alveolar bone will gradually be absorbed and disappear, resulting in a lack of vertical height of the alveolar bone. The lack of vertical height of the alveolar bone will seriously affect the placement of implants and the long-term effect.

[0003] Because alveolar bone is resorbed when subjected to pressure and proliferates when subjected to traction, distraction osteogenesis is an effective solution for correcting the vertical height deficiency of the alveolar bone and creating conditions for implant placement. Currently, specialized distraction devices exist for craniomaxillary distraction osteogenesis, and are widely used in oral and maxillofacial surgery, cranial surgery, and plastic surgery. The technical principle of this distraction device can be summarized as follows: first, the soft tissue surrounding the jaw is incised, then the mandible is completely or partially severed, and then the broken ends are gradually pushed apart through external force to form a gap. Subsequently, traction is used to induce the jaw's own osteogenesis, continuously forming new bone to fill this gap, thereby achieving the purpose of lengthening the mandible. This technology fully utilizes the regenerative potential of the body's tissues and can repair bone defects or deformities caused by various congenital or acquired reasons.

[0004] However, currently manufactured retractors have a key problem with their pulling mechanism: they cannot be locked. This means that after the retractor is set up, the fixed and movable ends may gradually move closer together, reducing the retractor's pulling effect or even causing it to fail completely. Summary of the Invention

[0005] To solve or at least partially solve the above-mentioned technical problems, this patent provides a retractor for alveolar bone disassembly, comprising: a retractor frame, a first retractor, a second retractor, a drive assembly, and a self-locking member. The first retractor is disposed on the retractor frame, and the second retractor is disposed on the retractor frame. The second retractor is movable along the retractor frame to approach the first retractor. The drive assembly is configured to drive the second retractor to move. The self-locking member is connected to the second retractor frame via a transmission connection with the drive assembly, and the self-locking member is prevented from moving away from the first retractor frame by limiting the movement of the drive assembly.

[0006] Preferably, the driving assembly includes: a screw rod, which is arranged along the length direction of the pulling frame body; a driving component, which is connected to the screw rod and is arranged at an end of the pulling frame body away from the first traction component; the driving component rotates to drive the screw rod to rotate; the second traction component includes: a sliding part, which is sleeved on the screw rod, and a thread is provided in the sliding part; the screw rod rotates to drive the sliding part to move along the screw rod.

[0007] Preferably, the self-locking member includes: a rotating member, which is sleeved on the driving member and rotates along with the driving member; a one-way locking member, which matches the rotating member and abuts against the rotating member to limit the rotation direction of the rotating member to a fixed direction.

[0008] Preferably, the rotating member has an annular structure, the rotating member is sleeved on the driving member and rotates together with the driving member, and a plurality of locking teeth are arranged around the rotating member; the locking teeth are provided with a transition surface and a locking surface, and the transition surface is connected to the locking surface and forms a tooth tip; the one-way locking member is provided on the pulling frame body, and the one-way locking member has a telescopic member, which can extend into the side gap between two adjacent locking teeth to realize tooth engagement. When the rotating member rotates, the transition surface of the locking tooth pushes the telescopic member to retract until the telescopic member passes the tooth tip, so that the telescopic member rebounds into the side gap.

[0009] Preferably, the one-way locking member further comprises: a locking seat provided on the outer side wall of the pulling frame body, the telescopic member being telescopically provided on the locking seat, and a guide surface matching the transition surface being provided at one end of the telescopic member abutting against the locking tooth.

[0010] Preferably, the rotating member is annular and is sleeved on the driving member and rotates together with the driving member; at least one stopping claw is provided on the outer surface of the rotating member, and the one-way locking member is also annular. The one-way locking member is fixedly sleeved on the pulling frame body and is located on the outer ring of the rotating member. Ratchets are evenly distributed on the inner side wall of the one-way locking member. When the rotating member rotates, the stopping claw contacts each ratchet and slides over the back of each ratchet; when the rotating member stops rotating, the stopping claw abuts against the root of the ratchet to limit the reverse rotation of the rotating member.

[0011] Preferably, the driving assembly further includes:

[0012] The docking member is connected to the driving member and rotates together with the driving member. The docking member is provided with a docking hole, and the cross section of the docking hole is square;

[0013] A rotating portion, detachably connected to the docking piece;

[0014] The insertion rod of the rotating part can be inserted into the docking hole to drive the docking member to rotate by rotating the rotating part;

[0015] A positioning hole is provided on the side wall of the docking hole, and a telescopic positioning piece is provided on the insertion rod of the rotating part;

[0016] When the insertion rod is inserted into the docking hole, the positioning piece will be inserted into the positioning hole.

[0017] Preferably, the pulling frame body is provided with a traction groove along its length direction, and the screw is arranged in the traction groove. The first traction member includes: a fixed traction plate, which is provided with a plurality of fixing holes. The second traction member also includes: a movable traction plate, which is provided on the sliding part, and is provided with a plurality of fixing holes. The movable traction plate and the fixed traction plate are located in the same plane.

[0018] Preferably, the alveolar bone detachable traction device also includes: a piezoresistive force sensor, which is arranged on the fixed traction plate to obtain the force exerted on the fixed traction plate during traction, and a signal transceiver module, which is arranged on the traction frame body. The signal transceiver module is communicatively connected with the piezoresistive force sensor to obtain the numerical value of the force exerted on the fixed traction plate, and converts the obtained numerical value into a numerical signal for transmission.

[0019] Preferably, the pulling frame body is provided with a sliding groove along its length direction, the screw is arranged in the sliding groove, the sliding part has a balancing wing and a main body part, the balancing wing extends outward from both sides of the main body part and is clamped in the notch of the sliding groove, and the outer surface of the pulling frame body is provided with scale lines along its length direction.

[0020] Compared with the existing technology, this patent provides a self-locking part, so that the alveolar bone detachable retractor is restricted by the self-locking part during operation, so that the distance between the first traction part and the second traction part will not change due to the influence of traction after the movement is completed. It can maintain a self-locking state and thus ensure the traction state, thereby improving the success rate of new bone formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the embodiments of this patent, the following briefly introduces the relevant drawings. It is understood that the drawings described below are only used to illustrate some embodiments of this patent, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned herein based on these drawings.

[0022] Figure 1 This is a three-dimensional schematic diagram of an alveolar bone detachable retractor according to an embodiment of the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram of an alveolar bone detachable retractor according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a self-locking member according to an embodiment of the present patent;

[0025] Figure 4This is a three-dimensional schematic diagram of an alveolar bone detachable retractor according to an embodiment of the present invention;

[0026] Figure 5 This is a three-dimensional schematic diagram of an alveolar bone detachable retractor according to an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional schematic diagram of an alveolar bone detachable retractor according to an embodiment of the present patent.

[0028] Description of reference numerals:

[0029] 1. First traction member; 11. Fixed traction plate; 2. Second traction member; 21. Movable traction plate; 211. Fixing hole; 22. Sliding part; 3. Pulling frame; 4. Driving assembly; 41. Driving component; 411. Positioning hole; 42. Screw; 5. Self-locking member; 51. Rotating member; 511. Stop claw; 512. Telescopic member; 52. One-way locking member; 521. Ratchet; 522. Locking tooth; 7. Rotating part; 71. Insertion rod. DETAILED DESCRIPTION

[0030] The following is a detailed description of this patent in conjunction with the accompanying drawings.

[0031] The alveolar bone is an important component of the maxillary and mandibular bones. It is located within the alveolar ridge and its main function is to support and fix the tooth roots. Through the periodontal ligament fibers, the alveolar bone is closely connected to the tooth roots, and together they transmit the occlusal force and maintain the stability of the teeth. When teeth are missing, due to the lack of continuous physiological stress stimulation, the alveolar bone gradually absorbs, especially in terms of the height and width of the alveolar ridge, showing a significant decreasing trend. Over time, this absorption process may continue, eventually causing the alveolar ridge morphology to become flat, which has a serious impact on dental implant restoration.

[0032] As the primary means of restoring missing teeth, the successful implementation of dental implants is highly dependent on sufficient bone support. However, alveolar bone resorption significantly reduces bone reserves, especially the lack of vertical height, which poses a major challenge to implant surgery. Insufficient alveolar bone width can be addressed through bone grafting; however, insufficient vertical height, especially in the anterior region of the maxillary and mandibular bones, significantly increases the difficulty of restoration, placing higher technical requirements on implant placement and postoperative restoration.

[0033] Distraction osteogenesis is a technique that involves slowly stretching the bone fragments using a specialized distraction device after incising bone tissue. The core of this method is to use distraction to stimulate the mandibular bone's inherent bone-forming potential, allowing new bone to gradually form within the distraction gap, thereby achieving bone lengthening and morphological reconstruction. This technique fully utilizes the body's regenerative capacity and can effectively repair bone defects or deformities caused by congenital or acquired causes. It can also effectively increase the vertical height of the alveolar bone, creating conditions for implant restoration. However, the distraction devices currently used in clinical practice are often large and relatively complex to operate. This not only increases the difficulty of surgical implementation and hinders precise operation, but also brings many inconveniences to the patient's postoperative adjustment and care. Furthermore, to ensure successful new bone formation in the mandible, the bone fragments must maintain a certain growth trend during the distraction process, ultimately forming a stable alveolar bone. However, existing distraction devices may have the risk of retraction after installation, which directly affects the distraction effect of the bone fragments and, in turn, adversely affects alveolar bone formation. Therefore, the development of more precise, stable and patient-friendly distraction devices is of great significance for optimizing the clinical effect of distraction osteogenesis and improving the success rate of implant restoration.

[0034] In view of this, the first embodiment of this patent proposes a detachable alveolar bone retractor to solve the above technical problems.

[0035] First embodiment

[0036] like Figure 1 、 Figure 2 The first embodiment of the present invention provides a retractor for an alveolar bone detachable structure, comprising a retractor body 3, a first retractor 1, a second retractor 2, a drive assembly 4, and a self-locking member 5. The first retractor 1 is disposed on the retractor body 3, and the second retractor 2 is disposed on the retractor body 3. The second retractor 2 can move along the retractor body 3 to approach the first retractor 1. The drive assembly 4 is used to drive the second retractor 2 to move. The self-locking member 5 is connected to the second retractor 2 via the drive assembly 4 and prevents the second retractor 2 from moving away from the first retractor 1 by limiting the movement of the drive assembly 4.

[0037] This application primarily addresses the problem of insufficient vertical height of the alveolar bone and proposes a distraction osteogenesis solution. The procedure is as follows: First, a small incision is made in the soft tissue of the alveolar bone. A first traction member 1 and a second traction member 2 are then vertically fixed above and below the incision. The second traction member 2, mounted on the distraction frame 3, is driven by a drive assembly 4 to move along a set path. When the second traction member 2 reaches the predetermined target position, the drive assembly 4 is stopped, maintaining a fixed distance between the first and second traction members 1 and 2. At this point, the drive assembly 4 is locked by a self-locking member 5, thereby securing the position of the second traction member 2 it drives and preventing it from shifting under external forces. The coordinated action of the first and second traction members 1 and 2 stretches the soft tissue of the alveolar bone, gradually inducing a growth trend and promoting the reconstruction of the previously retracted alveolar bone. The specific movement direction of the second traction member 2 can be pre-set based on the actual application scenario to meet the personalized traction needs of different users. This technical solution not only solves the problem of insufficient vertical height of the alveolar bone, but also improves the effect of bone reconstruction by precisely controlling the direction and strength of traction.

[0038] In addition, reference Figure 1 、 Figure 4 The drive assembly 4 shown includes: a screw 42, which is arranged along the length direction of the pulling frame body 3, a driving component 41, which is connected to the screw 42 and is arranged at one end of the pulling frame body 3 away from the first traction member 1. The driving component 41 rotates to drive the screw 42 to rotate. The second traction member 2 includes: a sliding part 22, which is sleeved on the screw 42, and a thread is provided in the sliding part 22. The screw 42 rotates to drive the sliding part 22 to move along the screw 42.

[0039] When the rotary drive component 41 rotates, the screw 42 connected to it also rotates synchronously. At this time, the sliding portion 22, which is mounted on the screw 42, is driven by the screw 42 through the intermeshing of the threads and moves along its axial direction. The second traction member 2, which is mounted on the sliding portion 22, will also move accordingly. This design, driven by the threads on the surface of the screw 42, makes the movement of the second traction member 2 smoother, effectively reducing jitter during movement. During the alveolar bone traction process, due to the small size of the alveolar bone itself, as the traction progresses and the demand for new bone growth, the amount of traction needs to be finely adjusted. To meet this demand, the screw 42 and the sliding portion 22 cooperate to achieve precise movement of small units, thereby realizing stepless adjustment of the second traction member 2. This fine adjustment capability enables the traction system to flexibly adapt to patients with different conditions and patients at different stages of treatment, ensuring the effectiveness and accuracy of traction therapy.

[0040] Specifically, refer to Figure 1 、 Figure 2As shown, the self-locking member 5 includes: a rotating member 51, which is sleeved on the driving member 41 and rotates along with the driving member 41; a one-way locking member 52, which matches the rotating member 51 and abuts against the rotating member 51 to limit the rotation direction of the rotating member 51 to a fixed direction.

[0041] During a complete treatment cycle, as the treatment progresses and new bone grows, the previously set traction trend may not be able to meet the needs of the grown alveolar bone. Therefore, it is necessary to further adjust the distance between the first traction member 1 and the second traction member 2 to adapt to the new growth situation. During this process, the second traction member 2 only needs to be adjusted in one direction. The specific operation is as follows: the rotating member 51 will rotate together with the driving member 41, and the one-way locking member 52 will cooperate with the rotating member 51 to mechanically limit the rotation direction of the rotating member 51. Even if the second traction member 2 tends to retract after being subjected to external force, the one-way locking member 52 can prevent the rotating member 51 from rotating further by mechanical abutment, thereby effectively limiting the movement of the second traction member 2 and ensuring the stability of the treatment process and the traction effect.

[0042] Also refer to Figure 5 、 Figure 6 As shown, the rotating member 51 has an annular structure, the rotating member 51 is sleeved on the driving member 41, and rotates together with the driving member 41, and a plurality of locking teeth 522 are arranged around the rotating member 51; the locking teeth 522 are provided with a transition surface and a locking surface, and the transition surface is connected to the locking surface to form a tooth tip; the one-way locking member 52 is provided on the pulling frame body 3, and the one-way locking member 52 has a telescopic member 512, and the telescopic member 512 can be extended into the side gap between two adjacent locking teeth 522 to realize tooth engagement. When the rotating member 51 rotates, the transition surface of the locking tooth 522 pushes the telescopic member 512 to retract until the telescopic member 512 passes the tooth tip, so that the telescopic member 512 rebounds into the side gap.

[0043] When the rotating member 51 rotates with the driving member 41, the locking tooth 522 will come into contact with the telescopic member 512 configured on the one-way locking member 52. Specifically, in a non-rotating static state, the telescopic member 512 is usually located at the tooth bottom position of the locking tooth 522. However, once it starts to rotate, the transition surface of the locking tooth 522 will play a guiding role during the rotation process, prompting the telescopic member 512 to automatically retract, thereby ensuring that the rotating member 51 can smoothly complete the rotation transition. When the transition surface of the locking tooth 522 completes its transition function, the telescopic member 512 will slide over the tooth tip of the locking tooth 522 and extend into another adjacent tooth bottom. At this time, the locking surface of the locking tooth 522 will be in direct and close contact with the telescopic member 512 to play the function of preventing the rotating member 51 from rotating in the opposite direction. By cleverly combining the transition surface and the locking surface in the locking tooth 522, and coordinating the design of the telescopic member 512 on the one-way locking member 52, we can ensure that the rotating member 51 can only rotate in one preset direction. In addition, since the telescopic member 512 provided on the one-way locking member 52 has the characteristic of automatically popping out, in actual application, the system can automatically and accurately lock the rotation direction during the rotation process without any additional operation.

[0044] To further meet the diverse needs of different pulling directions and enable the rotating member 51 to adapt to different rotational directions, we can achieve this goal by providing a design with two different locking teeth 522 orientations. Specifically, by adjusting the relative position of the transition surface and the locking surface on the locking teeth 522, the rotation characteristics of the rotating member 51 can be changed, thereby adapting it to a wider range of usage scenarios and needs. This flexible design not only improves the adaptability and practicality of the device, but also provides a more personalized solution for different treatment environments and needs.

[0045] Specifically, the one-way locking member 52 also includes: a locking seat, which is arranged on the outer side wall of the pulling frame body 3, and the telescopic member 512 is telescopically arranged on the locking seat. The end of the telescopic member 512 that abuts the locking tooth 522 is provided with a guide surface matching the transition surface.

[0046] A guide surface is provided at one end of the telescopic member 512. This design cleverly optimizes the operating mechanism of the rotating member 51 during the rotation process. When the rotating member 51 starts to rotate, the transition surface on the locking tooth 522 will form a precise fit with the guide surface. This fit is intended to reduce the contact area of the telescopic member 512 when passing through each locking tooth 522, thereby effectively reducing the friction between the two. This reduction in friction directly leads to a corresponding reduction in the resistance encountered by the rotating member 51 during the rotation process, thereby significantly improving the smoothness of the rotating member 51 during the driving process. This improvement not only makes the operation of the equipment smoother, but also makes the operator's experience more relaxed and convenient when performing operations, thereby improving the overall work efficiency and operating experience.

[0047] Second embodiment

[0048] In the first embodiment of the present application, a detachable alveolar bone retractor is disclosed, which includes a self-locking member 5 to prevent the second retracting member 2 from retracting during movement. However, to accommodate different pulling directions, locking teeth 522 need to be provided in different orientations to accommodate the movement direction of the second retracting member 2.

[0049] In view of this, the second embodiment of the present application is improved compared to the first embodiment in that, with reference to Figure 2 、 Figure 3 The rotating member 51 is annular and is mounted on the driving member 41, rotating along with the driving member 41. At least one stop pawl 511 is provided on the outer surface of the rotating member 51. The one-way locking member 52 is also annular and fixedly mounted on the tensioning frame body 3 and located on the outer ring of the rotating member 51. Ratchet teeth 521 are evenly distributed on the inner sidewall of the one-way locking member 52. When the rotating member 51 rotates, the stop pawl 511 contacts each ratchet tooth 521 and slides over the back of each ratchet tooth 521. When the rotating member 51 stops rotating, the stop pawl 511 abuts against the root of the ratchet tooth 521, thereby limiting the reverse rotation of the rotating member 51.

[0050] When the driving component 41 rotates, the rotating member 51 mounted thereon will rotate along with it. Simultaneously, the stop pawl 511 provided on the rotating member 51 will also move synchronously, and during the movement, it will continuously contact the ratchet teeth 521 on the inner side wall of the one-way locking member 52. When the stop pawl 511 transitions between the ratchet teeth 521, it is specifically manifested as follows: since the tooth backs of the ratchet teeth 521 are all inclined, the stop pawl 511 will abut against the tooth backs of the ratchet teeth 521 under the action of elasticity, and slide along the tooth backs, and then smoothly pass through the tooth tips of the ratchet teeth 521. Once passing the tooth tips, the stop pawl 511 will extend to the tooth bottom position between two adjacent ratchet teeth 521. At this time, the other side of the ratchet teeth 521 connected to the tooth backs will come into play, abutting the stop pawl 511, thereby effectively preventing the rotating member 51 from flipping over, and thus preventing the driving component 41 from rotating in the opposite direction.

[0051] Furthermore, when the movement of the second pulling member 2 toward the first pulling member 1 needs to be changed to one away from the first pulling member 1, the operation is very simple. Simply rotate the rotating member 51 and the one-way locking member 52 180 degrees and then re-secure them to change the direction of rotation. This design avoids the need for two sets of one-way locking members 52 with different ratchet teeth 521 orientations, significantly reducing mold development costs and improving product utilization. It is worth noting that the number of locking pawls 511 on the rotating member 51 can be customized to meet specific user needs. For example, when the pulling rebound is required, a rotating member 51 with a larger number of locking pawls 511 can be selected to increase the contact points between the pawls 511 and the ratchet, significantly improving the retractor's anti-retraction capability and enhancing its self-locking effect. This flexible design not only meets diverse usage needs but also further enhances the overall performance and reliability of the device.

[0052] Further, refer to Figure 1 The illustrated drive assembly 4 further includes a docking member connected to the drive component 41 and rotating with the drive component 41. The docking member is provided with a docking hole having a square cross-section. A rotating portion 7 is detachably connected to the docking member. An insertion rod 71 of the rotating portion 7 can be inserted into the docking hole to rotate the docking member by rotating the rotating portion 7. A positioning hole 411 is formed in the side wall of the docking hole. The insertion rod 71 of the rotating portion 7 is provided with a telescopic positioning member. When the insertion rod 71 is inserted into the docking hole, the positioning member will extend into the positioning hole 411.

[0053] When the retractor needs to be driven to work, first extend the insertion rod 71 of the rotating part 7 into the docking hole. The telescopic positioning piece on the insertion rod 71 will then enter the positioning hole 411, and then the operation is realized by rotating the rotating part 7. During the rotation process, the rotating part 7 will drive the docking piece to rotate together, thereby realizing the operation of the drive component 4. It is worth mentioning that in order to optimize the stability and transmission efficiency during the rotation process, the cross-sections of the docking hole and the insertion rod 71 are both designed to be square. This square structure uses the characteristics of its edges and corners to more effectively transmit the rotational motion trend during the rotation process, reducing the relative sliding between the docking piece and the rotating part 7, thereby improving the smoothness and accuracy of the operation.

[0054] Furthermore, the ingenious design of the telescopic positioning member and positioning hole 411 effectively prevents separation between the insertion rod 71 and the docking hole during rotation, further ensuring smooth operation. Once the driving component 41 is complete, the ease of operation is evident. Simply separating the rotating portion 7 from the docking member prevents it from remaining in the patient's mouth, thereby reducing the overall size of the retractor while in the mouth, improving ease of use and patient comfort. This design not only simplifies the operational process but also effectively reduces potential risks and discomfort.

[0055] Further, refer to Figure 1 、 Figure 4 The pulling frame body 3 shown is provided with a traction groove along its length direction, and the screw 42 is arranged in the traction groove. The first traction member 1 includes: a fixed traction plate 11, and a plurality of fixing holes 211 are opened on the fixed traction plate 11. The second traction member 2 also includes: a movable traction plate 21, which is provided on the sliding part 22, and a plurality of fixing holes 211 are opened on the movable traction plate 21. The movable traction plate 21 and the fixed traction plate 11 are located in the same plane.

[0056] By setting the traction groove, an effective limiting effect can be exerted on the second traction member 2 during movement, causing it to move along the direction of the traction groove. This design ensures that the first traction member 1 and the second traction member 2 always remain in the same straight line, thereby preventing the second traction member 2 from offsetting during movement, thereby affecting the pulling effect. At the same time, the fixing holes 211 respectively provided on the fixed traction plate 11 and the movable traction plate 21 can be fixed above and below the soft tissue incision, respectively, during the process of fixing the retractor. During specific operation, a fixing member such as a special screw can be passed through the fixing hole 211 and fastened to the soft tissue, so that the fixed traction plate 11 of the first traction member 1 and the movable traction plate 21 of the second traction member 2 are both firmly connected to the soft tissue.

[0057] When the drive assembly 4 is working, the operator can drive the second traction member 2 to move by manipulating the drive assembly 4. As the second traction member 2 moves, the movable traction plate 21 thereon will also move synchronously, thereby pulling the soft tissue connected thereto, making it move closer to or away from the position of the fixed traction plate 11, thereby achieving effective traction of the alveolar soft tissue. In addition, the shapes of the fixed traction plate 11 and the movable traction plate 21 can be flexibly customized according to actual needs and the target shape of the alveolar bone to be pulled. By adjusting the number of fixing holes 211 and the shape of the traction plate, it can be more closely matched with the alveolar bone, thereby further improving the accuracy and effect of traction. This personalized design not only enhances the adaptability of the retractor, but also provides a strong guarantee for the precise traction of the alveolar soft tissue.

[0058] Third embodiment

[0059] In the second embodiment of the present application, a retractor is disclosed that can be used to retract and reconstruct alveolar bone. However, the magnitude of the pulling force applied to the soft tissue incision during the retraction process cannot be determined, and the operator must rely on the feel and experience of the operator to infer the retraction situation.

[0060] In view of this, the improvement of the second embodiment of the present application compared to the third embodiment is that the alveolar bone detachable retractor also includes: a piezoresistive force sensor, arranged on the fixed traction plate 11 to obtain the force exerted on the fixed traction plate 11 during traction, and a signal transceiver module, arranged on the traction frame body 3. The signal transceiver module is communicatively connected with the piezoresistive force sensor to obtain the numerical value of the force exerted on the fixed traction plate 11, and convert the obtained numerical value into a numerical signal for transmission.

[0061] The piezoresistive force sensor installed on the fixed traction plate 11 can detect the force exerted on the first traction member 1 in real time during the traction process and transmit the detected value to the signal transceiver module. The signal transceiver module is responsible for converting these values into digital signals and transmitting them to a computer or mobile phone as needed, so that the operator can understand the traction situation in detail.

[0062] In order to further improve the accuracy of the detection data, a piezoresistive force sensor can be added to the movable traction plate 21 of the second traction member 2. By detecting the traction force respectively through these two sensors, the error that may be generated when relying on only one sensor can be effectively reduced, thereby significantly improving the accuracy of the traction value. Of course, in order to optimize the pulling effect, a standard pulling range can be preset, and the parameters of the range can be set in a signal collection terminal, such as a mobile phone or computer. When the numerical signal received by the computer or mobile phone exceeds the preset standard pulling range, the terminal device will directly issue an alarm so that the user can quickly adjust and respond. This intelligent design not only improves the convenience of operation, but also provides strong support for the optimization of the pulling effect, making the entire pulling process more efficient, safe and accurate.

[0063] In addition, the pulling frame body 3 is provided with a sliding groove along its length direction, and the screw 42 is arranged in the sliding groove. The sliding part 22 has a balancing wing and a main body part. The balancing wing extends outward from both sides of the main body part and is clamped in the notch of the sliding groove. The outer surface of the pulling frame body 3 is provided with scale lines along its length direction.

[0064] The sliding portion 22 cooperates with the sliding groove and moves along the sliding groove under the drive of the screw 42. At the same time, the arrangement of the balancing wing and the main body ensures that the balancing wing always cooperates with the sliding groove during movement, thereby offsetting the rotational tendency generated when the screw 42 rotates to drive the second traction member 2 to move along the sliding groove. This design ensures that the fixed traction plate 11 located on the first traction member 1 and the movable traction plate 21 located on the second traction member 2 always remain in the same horizontal plane. Through this precise coordination, the movement direction of the soft tissue during traction can also always remain in the same plane, effectively preventing unnecessary twisting of the soft tissue during traction. This design not only improves the accuracy of traction, but also enhances the stability and safety of the operation.

[0065] At the same time, the scale lines on the surface of the traction frame 3 clearly provide the user with feedback on the distance between the first traction member 1 and the second traction member 2, allowing the operator to intuitively understand the soft tissue traction status. This intuitive design not only simplifies the operation process but also provides a convenient reference for the operator, making the entire traction process more efficient, transparent, and controllable. Through this innovative design, the user can more accurately grasp the progress of the traction, allowing for more timely and accurate adjustments, further improving the traction effect and safety.

[0066] Finally, it should be noted that those skilled in the art will appreciate that, in order to facilitate a better understanding of this patent, the embodiments of this patent set forth numerous technical details. However, even without these technical details and the various variations and modifications based on the aforementioned embodiments, the technical solutions claimed in the various claims of this patent can be substantially achieved. Therefore, in actual practice, various changes in form and detail may be made to the aforementioned embodiments without departing from the spirit and scope of this patent.

Claims

1. A detachable alveolar bone retractor, characterized in that: The retractor comprises: Tension frame (3); A first traction member (1) is arranged on the traction frame (3); A second traction member (2) is arranged on the traction frame body (3), and the second traction member (2) is capable of moving along the traction frame body (3) to approach the first traction member (1); A driving assembly (4) for driving the second traction member (2) to move; A self-locking member (5) is connected to the second traction member (2) via the driving assembly (4) and prevents the second traction member (2) from moving in a direction away from the first traction member (1) by limiting the movement of the driving assembly (4).

2. The alveolar bone detachable retractor according to claim 1, characterized in that: The driving assembly (4) comprises: A screw rod (42) is arranged along the length direction of the pulling frame body (3); A driving component (41) is connected to the screw rod (42) and is arranged at an end of the pulling frame (3) away from the first traction member (1), and the driving component (41) rotates to drive the screw rod (42) to rotate; The second traction member (2) comprises: The sliding part (22) is sleeved on the screw rod (42), and a thread is provided in the sliding part (22). The screw rod (42) rotates to drive the sliding part (22) to move along the screw rod (42).

3. The alveolar bone detachable retractor according to claim 2, characterized in that: The self-locking member (5) comprises: A rotating member (51) is sleeved on the driving member (41), and the rotating member (51) rotates along with the driving member (41); A one-way locking member (52) matches the rotating member (51), and the one-way locking member (52) abuts against the rotating member (51) to limit the rotation direction of the rotating member (51) to a fixed direction.

4. The alveolar bone detachable retractor according to claim 3, characterized in that: The rotating member (51) has an annular structure. The rotating member (51) is sleeved on the driving member (41) and rotates together with the driving member (41); a plurality of locking teeth (522) are arranged around the rotating member (51); the locking teeth (522) are provided with a transition surface and a locking surface, and the transition surface is connected to the locking surface and forms a tooth tip; the one-way locking member (52) is provided on the pulling frame body (3), and the one-way locking member (52) has a telescopic member (512), and the telescopic member (512) can extend into the side gap between two adjacent locking teeth (522) to achieve tooth engagement; When the rotating member (51) rotates, the transition surface of the locking tooth (522) pushes the telescopic member (512) to retract until the telescopic member (512) passes through the tooth tip, so that the telescopic member (512) rebounds into the side gap.

5. The alveolar bone detachable retractor according to claim 4, characterized in that: The one-way locking member (52) further comprises: A locking seat is arranged on the outer side wall of the pulling frame body (3), and the telescopic member (512) is telescopically arranged on the locking seat; One end of the telescopic member (512) that abuts against the locking tooth (522) is provided with a guide surface that matches the transition surface.

6. The alveolar bone detachable retractor according to claim 3, characterized in that: The rotating member (51) is annular and sleeved on the driving member (41), and rotates together with the driving member (41); at least one locking claw (511) is provided on the outer surface of the rotating member (51); The one-way locking member (52) is also ring-mounted. The one-way locking member (52) is fixedly sleeved on the pulling frame body (3) and is located on the outer ring of the rotating member (51). The inner side wall of the one-way locking member (52) is evenly distributed with ratchet teeth (521); When the rotating member (51) rotates, the stopping pawl (511) contacts each of the ratchet teeth (521) and slides over the tooth backs of each of the ratchet teeth (521); when the rotating member (51) stops rotating, the stopping pawl (511) abuts against the tooth roots of the ratchet teeth (521) to limit the reverse rotation of the rotating member (51).

7. The alveolar bone detachable retractor according to claim 2, characterized in that: The drive assembly (4) further comprises: a docking member connected to the driving member (41) and rotating together with the driving member (41); a docking hole is provided on the docking member, and the cross section of the docking hole is square; A rotating portion (7) detachably connected to the docking member; The insertion rod (71) of the rotating part (7) can be inserted into the docking hole to drive the docking member to rotate by rotating the rotating part (7); A positioning hole (411) is provided on the side wall of the docking hole, and a telescopic positioning piece is provided on the insertion rod (71) of the rotating part (7); When the insertion rod (71) is inserted into the docking hole, the positioning member will be inserted into the positioning hole (411).

8. The alveolar bone detachable retractor according to claim 2, characterized in that: The pulling frame body (3) is provided with a pulling groove along its length direction, and the screw rod (42) is arranged in the pulling groove; The first traction member (1) comprises: A fixed traction plate (11), wherein the fixed traction plate (11) is provided with a plurality of fixing holes (211); The second traction member (2) further comprises: A movable traction plate (21) is arranged on the sliding portion (22); a plurality of fixing holes (211) are provided on the movable traction plate (21); and the movable traction plate (21) and the fixed traction plate (11) are located in the same plane.

9. The alveolar bone detachable retractor according to claim 8, characterized in that: The alveolar bone detachable retractor further comprises: A piezoresistive force sensor is provided on the fixed traction plate (11) to obtain the force applied to the fixed traction plate (11) when the fixed traction plate (11) is pulled; A signal transceiver module is provided on the pulling frame body (3), and the signal transceiver module is communicatively connected with the piezoresistive force sensor to obtain the numerical value of the force applied to the fixed pulling plate (11), and converts the obtained numerical value into a numerical signal for transmission.

10. The alveolar bone detachable retractor according to claim 2, characterized in that: The pulling frame body (3) is provided with a sliding groove along its length direction; The screw (42) is arranged in the sliding groove; The sliding portion (22) has a balancing wing and a main body, wherein the balancing wing extends outward from both sides of the main body and is clamped in the notch of the sliding groove; The outer surface of the pulling frame body (3) is provided with scale lines along its length direction.

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