Free end molar implant positioning device

Abstract

The utility model relates to technical fields, concretely is free end molar implantation positioner, including clamping part and the adjusting part of fixed above clamping part, the clamping part includes the main chuck and the auxiliary chuck of opposite setting, the limiting arm of fixed above auxiliary chuck and the locating arm of fixed in auxiliary chuck side, the limiting arm is L type, one end of limiting arm is above the space between main chuck and auxiliary chuck, be equipped with the locating hole on the locating arm, and the adjusting part is used for controlling the distance between main chuck and auxiliary chuck. This kind of implantation positioner is embraced with adjacent tooth with main auxiliary chuck, cooperates adjusting part and limiting arm, breaks through the limitation of traditional dependence on former implantation, accurately determines the implantation site, reduces the operation risk, promotes the repair efficiency, and simultaneously, its flexible adjustable, quick dismounting characteristics, adapt to different adjacent tooth size, greatly shorten the operation time, significantly enhance clinical operation convenience, also help to reduce the operation risk, bring more safe, more comfortable treatment experience for the patient.

Description

Technical Field

[0001] This utility model relates to the technical field of dental implant tools, specifically a free-end molar implant locator. Background Technology

[0002] The free molar region usually refers to the molar region in the oral cavity where there are no other teeth behind the missing tooth. For example, if the last molar in the mandible or maxilla is missing and there are no other teeth distal to it, this region is the free molar region.

[0003] In existing dental implant techniques, implantation surgery in the free end molar region is particularly challenging. If the implant is misplaced during the procedure, it can easily compress the roots of adjacent teeth, causing pain and loosening. Conversely, if the implant is too far from the adjacent tooth, a large gap can form, trapping food and leading to tooth decay. Therefore, implant surgery often relies on the surgeon's experience and auxiliary tools to determine the implant's placement. For example, the existing technology "A Positioning Device and Method for Implants" (Publication No.: CN115300144A) discloses an implant positioning device. This device uses two lower guide sleeves to ensure the implanted implant is parallel to the previous implant. The left lower guide sleeve is connected to an observation rod placed in the implant socket, and the right lower guide sleeve is connected via a mounting bracket, a transverse groove, an extension rod, a mounting block, a connecting block, a sliding block, and a pushing block. The device moves so that the lower guide sleeve on the right side points to the position of another implant. Then, by gripping grip one and grip two, grip two moves along the vertical groove and vertical rod towards grip one. At this time, the spring is compressed, which drives the piston down under the push of the U-shaped push rod. The gas in the compression cylinder of the compression mounting bracket one enters the air bladder in the two grooves through the vent pipe. The air bladder is inflated, which causes the clamping plate to compress the extension rod, restricting the movement of the extension rod, thereby defining the position of the lower guide sleeve on the right side to determine the implantation position of the implant. However, the existing technology still has the following technical problems:

[0004] Existing implant devices first connect the left lower guide sleeve to the observation rod of the previous implant socket to serve as a positioning reference. Then, the position of the right lower guide sleeve is adjusted using an extension rod. Finally, the position of the right lower guide sleeve is fixed by a gripping rod and its connected clamping structure, thereby locking the implant position. However, when there is no previous implant in front of the implant position and only a natural molar, the left lower guide sleeve in the existing technology cannot serve as a positioning reference. This makes it impossible for the right lower guide sleeve to determine the position of the next implant, resulting in inaccurate positioning of the implant and affecting the implantation outcome. Utility Model Content

[0005] This invention provides a free-end molar implant locator, which can solve the problem in the prior art where the implant cannot be accurately positioned when there is no implant in front of the implantation area for reference, thus affecting the implantation effect.

[0006] This application provides the following technical solution: a free end molar implant locator, including a clamping part and an adjusting part fixed above the clamping part; the clamping part includes a main clamp and a secondary clamp arranged opposite to each other, a limiting arm fixed above the secondary clamp, and a positioning arm fixed to the side of the secondary clamp; the limiting arm is L-shaped, one end of the limiting arm is above the space between the main clamp and the secondary clamp, the positioning arm is provided with a positioning hole, and the adjusting part is used to control the distance between the main clamp and the secondary clamp.

[0007] Beneficial effects:

[0008] 1. Accurately locate the implant site, improving implant convenience and surgical restoration efficiency. The main and auxiliary clamps are positioned opposite each other, and the distance between them is controlled by an adjustment mechanism. This allows the main and auxiliary clamps to directly hold the adjacent teeth in the implant area. Simultaneously, the limiting arm rests against the upper end of the adjacent teeth to vertically limit the entire clamping mechanism, thus providing stable support. The positioning holes on the positioning arm determine the exact implant position on the jawbone. These holes guide the pilot drill, identifying suitable implant sites for posterior teeth. Compared to existing techniques that rely on the previous implant as a reference, this method uses the natural molars in front of the implant area as a reference to locate the subsequent implant position. This effectively solves the limitations of existing techniques when no implant is available as a reference, improving surgical convenience. With this method, doctors can obtain more accurate implant site information during surgery, reducing the risks of implant surgery and restoration, improving surgical restoration efficiency, and ensuring the long-term stability of the implant.

[0009] 2. Convenient adjustment, easy installation and disassembly. This solution demonstrates significant advantages in flexible adjustment and convenient disassembly through the coordinated design of the clamping and adjusting parts: the main and auxiliary clamps of the clamping part are positioned opposite each other, and the distance between them is controlled by the adjusting part, achieving circumferential fixation of adjacent teeth of different sizes. It can quickly adapt to the crown width of different adjacent teeth, improving adaptability; the doctor can fine-tune the clamping force and positioning angle in real time according to the surgical needs, ensuring clamping stability and allowing for quick reverse adjustment to release the clamps after positioning. Disassembly of the device can be completed without additional tools, significantly shortening surgical preparation and operation time and improving the flexibility and efficiency of clinical use.

[0010] Furthermore, the positioning arm is L-shaped and includes a long arm section and a short arm section. The short arm section is vertically fixed to the side of the sub-clamp, and the positioning hole is located on the long arm section.

[0011] Beneficial effects: The L-shaped positioning arm with the positioning hole located on the longer segment optimizes the positioning effect of free-end molar implantation in several ways. Firstly, the shorter L-shaped segment is vertically fixed to the side of the chuck, enhancing the connection stability between the positioning arm and the clamping part, preventing wobbling during operation and ensuring precise positioning. Secondly, the longer segment keeps the positioning hole away from the clamping center, allowing the surgeon to observe the relative position of the positioning hole to the implant area, providing a clear visual reference for intraoperative calibration, improving the accuracy of implant placement and orientation, and ensuring a higher success rate for the implantation surgery.

[0012] Furthermore, the adjustment unit includes a main clip fixed above the main clamp, a secondary clip fixed above the limiting arm, a connecting plate fixed between the main clip and the secondary clip, and an adjustment mechanism fixed on the connecting plate. The adjustment mechanism is used to control the relative distance between the main clip and the secondary clip.

[0013] Beneficial effects: The main clip and the auxiliary clip are fixed above the main chuck and the limiting arm, respectively, forming a stable bidirectional clamping fulcrum. This ensures that the positioner maintains overall rigidity during adjustment and avoids positioning deviation caused by shaking. The adjustment mechanism can precisely control the relative distance between the main clip and the auxiliary clip, thereby fixing the main chuck and the auxiliary chuck to adjacent teeth and ensuring clamping stability.

[0014] Furthermore, the adjustment mechanism includes a screw rod vertically inserted through the center of the connecting plate, a nut threadedly connected to the screw rod, a connecting lug fixed in the middle of the main plate clamp, and a connecting rod pivotally connected to the connecting lug and the lower end of the screw rod. The nut is located above the connecting plate.

[0015] Beneficial effects: The threaded engagement between the screw and nut converts rotational motion into linear motion. The vertical displacement of the screw can be precisely controlled by the number of turns of the nut. For example, when the nut is tightened, the screw will move upward due to the force, which will pull the connecting rod and connecting lug, thereby pulling the main clamp towards the secondary clamp. This achieves the simultaneous clamping of the main and secondary clamps. After tightening stops, the nut and connecting plate can lock the screw position, preventing the adjustment mechanism from loosening due to vibration or external force during the operation. This avoids the risk of the entire clamping part shifting during the operation, ensuring the safety and reliability of the operation.

[0016] Furthermore, both the clamping part and the adjusting part are made of medical-grade stainless steel.

[0017] Beneficial effects: Medical-grade stainless steel possesses excellent mechanical strength and corrosion resistance, enabling it to stably withstand the pressure of clamping adjacent teeth during surgery and the mechanical stress of the adjustment mechanism. It also resists long-term erosion from the complex oral fluid environment, ensuring long-term stability of positioning accuracy. Its biocompatibility, meeting medical safety standards, ensures no irritation or toxicity upon contact with oral tissues, reducing the risk of wound infection and making it suitable for implant scenarios with high safety requirements, eliminating patient concerns about allergies. Its smooth surface and high-temperature, high-pressure resistance support multiple sterilization methods, including high-temperature steam sterilization and chemical disinfection, meeting hospital infection control needs. Furthermore, the material is wear-resistant and maintains its performance and smoothness even after repeated sterilization, extending the device's lifespan and reducing maintenance costs.

[0018] Furthermore, the positioning arm includes a main body, a slide plate slidably connected to the main body, and a screw threadedly connected to the side of the main body. The screw is used to lock the slide plate. The main body has a groove, and the bottom of the groove has an oblong hole. The positioning hole is opened on the slide plate.

[0019] Beneficial effects: The sliding connection design between the slide plate and the main body of the positioning arm, combined with the threaded locking screw, allows for precise adjustment of the relative positions of the positioning holes and the main and auxiliary clamps on the adjacent teeth, greatly improving the flexibility and adaptability of implant positioning. After the main and auxiliary clamps encircle and hold the adjacent teeth, the dentist can adjust the distance between the positioning holes and the adjacent teeth by sliding the slide plate according to the patient's actual tooth distance, thereby adjusting the implant placement position. This provides a stable and personalized reference for implant placement, improving the applicability of this positioning device. Attached Figure Description

[0020] Figure 1 This is the main structural view of Embodiment 1.

[0021] Figure 2 for Figure 1 The left view.

[0022] Figure 3 for Figure 2 Top view after removing the screw, nut, positioning plate, main plate clamp, auxiliary plate clamp, connecting lug, and connecting rod.

[0023] Figure 4 This is a top view of Example 2.

[0024] Figure 5 for Figure 4 The main view after removing the skateboard. Detailed Implementation

[0025] The following detailed description illustrates the specific implementation method:

[0026] The markings in the accompanying drawings of the instruction manual include: main chuck 1, main plate clamp 2, connecting ear 3, connecting rod 4, connecting disc 5, nut 6, screw 7, secondary plate clamp 8, limiting arm 9, positioning arm 10, positioning hole 101, sliding plate 102, screw 103, sliding groove 104, oblong hole 105, adjacent tooth 11, and secondary chuck 12.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, the free end molar implant locator includes a clamping part and an adjusting part fixed above the clamping part.

[0029] The clamping part includes a main clamp 1 and a secondary clamp 12 disposed opposite to each other, a limiting arm 9 fixed above the secondary clamp 12, and a positioning arm 10 fixed to the side of the secondary clamp 12; as shown Figure 1 As shown, the limiting arm 9 is L-shaped, with one end of the limiting arm 9 positioned above the space between the main chuck 1 and the auxiliary chuck 12, as... Figure 2 and Figure 3 As shown, the positioning arm 10 is also L-shaped, and the positioning arm 10 includes a long arm section and a short arm section. The short arm section is vertically fixed on the side of the sub-clamp 12, and the positioning hole 101 is located on the long arm section.

[0030] like Figures 1 to 3 As shown, the adjustment unit includes a main clip 2 fixed above the main clamp 1, a secondary clip 8 fixed above the limiting arm 9, a connecting plate 5 fixed between the main clip 2 and the secondary clip 8, and an adjustment mechanism fixed on the connecting plate 5. The adjustment mechanism includes a screw 7 vertically inserted through the center of the connecting plate 5, a nut 6 threadedly connected to the screw 7, a connecting lug 3 fixed in the middle of the main clip 2, and a connecting rod 4 pivotally connected to the connecting lug 3 and the lower end of the screw 7. Both the main clip 2 and the secondary clip 8 are elastic. The nut 6 is located above the connecting plate 5, and the screw 7 can move vertically relative to the connecting plate 5.

[0031] In this embodiment, all components of the clamping and adjusting parts are made of medical-grade stainless steel. Medical-grade stainless steel has excellent mechanical strength and corrosion resistance, which can stably withstand the pressure of clamping adjacent teeth 11 during surgery and the mechanical stress of the adjusting mechanism. It can also resist long-term erosion from the complex oral fluid environment. Furthermore, the material is wear-resistant and can maintain its performance and smoothness after repeated sterilization, thus extending the service life of the device and reducing maintenance costs.

[0032] The method for using this solution is as follows:

[0033] First, loosen nut 6 to relax the main chuck 1 and auxiliary chuck 12. Then, place the main chuck 1 and auxiliary chuck 12 on both sides of the adjacent tooth 11 in the free molar implant area, so that the limiting arm 9 presses down against the upper end of the adjacent tooth 11 to achieve vertical fixation of the locator. Then, tighten nut 6. Due to the obstruction of the positioning plate, as nut 6 is gradually tightened, the screw 7 moves upward relative to the positioning plate due to the force, thereby pulling up the connecting rod 4 at the bottom of the screw 7, which in turn pulls the connecting ear 3 so that the main chuck 1 at the bottom of the main clip 2 moves closer to the auxiliary chuck 12 to achieve clamping and fixation of the adjacent tooth 11. Then, the doctor can confirm the implant point through the positioning hole 101 on the positioning arm 10 and use the positioning hole 101 to guide the pilot drill to achieve drilling operation during surgery.

[0034] Example 2

[0035] like Figure 4 and Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the positioning arm 10 includes a main body, a slide plate 102 slidably connected to the main body, and a screw 103 threadedly connected to the side of the main body. A groove 104 is provided on the main body, and a waist-shaped hole 105 is provided at the bottom of the groove 104. A positioning hole 101 is provided on the slide plate 102. The end of the screw 103 can extend into the groove 104 from the side. When the screw 103 is tightened, the end of the screw 103 can press against the side of the slide plate 102 to lock it in place. During surgery, the surgeon can pass the pilot drill bit through the positioning hole 101 and then through the waist-shaped hole 105 to reach the position on the gum line for drilling. The sliding connection design between the slide plate 102 and the main body in the positioning arm 10, combined with the threaded locking screw 103, allows for precise adjustment of the relative positions of the positioning hole 101 and the main chuck 1 and secondary chuck 12 on the clamping areas of adjacent teeth 11, thereby greatly improving the flexibility and adaptability of implant positioning. After the main clamp 1 and the auxiliary clamp 12 encircle and hold the adjacent tooth 11, the doctor can adjust the distance between the positioning hole 101 and the adjacent tooth 11 by sliding the slide plate 102 according to the actual tooth distance of the patient, thereby adjusting the implant position and providing a stable and personalized reference for implant placement, thus improving the applicability of this positioner.

[0036] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A free-end molar implant locator, characterized in that: It includes a clamping part and an adjusting part fixed above the clamping part; the clamping part includes a main chuck and a secondary chuck arranged opposite each other, a limiting arm fixed above the secondary chuck, and a positioning arm fixed to the side of the secondary chuck; the limiting arm is L-shaped, with one end of the limiting arm above the space between the main chuck and the secondary chuck, and the positioning arm is provided with a positioning hole; the adjusting part is used to control the distance between the main chuck and the secondary chuck.

2. The free-end molar implant locator according to claim 1, characterized in that: The positioning arm is L-shaped and includes a long arm section and a short arm section. The short arm section is vertically fixed to the side of the sub-clamp, and the positioning hole is located on the long arm section.

3. The free-end molar implant locator according to claim 2, characterized in that: The adjustment unit includes a main clip fixed above the main clamp, a secondary clip fixed above the limiting arm, a connecting plate fixed between the main clip and the secondary clip, and an adjustment mechanism fixed on the connecting plate. The adjustment mechanism is used to control the relative distance between the main clip and the secondary clip.

4. The free-end molar implant locator according to claim 3, characterized in that: The adjustment mechanism includes a screw rod vertically inserted through the center of the connecting plate, a nut threadedly connected to the screw rod, a connecting lug fixed in the middle of the main plate clamp, and a connecting rod pivotally connected to the connecting lug and the lower end of the screw rod. The nut is located above the connecting plate.

5. The free-end molar implant locator according to claim 1, characterized in that: Both the clamping and adjusting parts are made of medical-grade stainless steel.

6. The free-end molar implant locator according to claim 2, characterized in that: The positioning arm includes a main body, a slide plate slidably connected to the main body, and a screw threadedly connected to the side of the main body. The screw is used to lock the slide plate. The main body has a groove, and the bottom of the groove has an oblong hole. The positioning hole is opened on the slide plate.

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