Width increasing device for oral implant restoration

Abstract

The invention discloses a broadening device for oral implant repair, and relates to the technical field of oral medical instruments. Comprising a protective shell, extension blocks are arranged on the two sides of the protective shell, fixing bolts are arranged at the back end of the protective shell, an adjusting mechanism is arranged in a cavity in the bottom end of the protective shell, a limiting assembly is arranged in a cavity in the top end of the protective shell, and the adjusting mechanism is rotationally connected to an adjusting worm on the inner wall of the cavity in the bottom end of the protective shell. A pushing rod is arranged on one side of the gear in a limiting sliding mode, and a rotating assembly is arranged at the top end of the adjusting worm, so that precise broadening of the unilateral alveolar bone and the gingiva is achieved, the other side of the gear can be kept static or different amplitudes can be adjusted according to needs, the problem that according to traditional synchronous adjustment, healthy side tissue is extruded is solved, and the adjusting amplitude can be effectively locked; and parameter deviation caused by accidental touch of the adjusting component in the surgical operation is avoided.

Description

Technical Field

[0001] This invention relates to the field of oral medical device technology, specifically to a widening device for dental implant restoration. Background Technology

[0002] In clinical practice of dental implant restoration, insufficient alveolar bone width is a common problem affecting the implantation effect and long-term stability. For patients with insufficient alveolar bone width, it is necessary to expand the alveolar bone with bone widening instruments to provide sufficient space for osseointegration of the implant. Therefore, alveolar bone widening instruments for dental implant restoration have become one of the indispensable core instruments in dental implant surgery. Among them, mechanical expansion method is the most widely used because it is relatively simple to operate and less invasive. Its core principle is to generate a slow and continuous expansion force in the alveolar bone through the instrument, stimulate bone tissue regeneration, and thus achieve the purpose of widening the alveolar bone.

[0003] Most existing tooth widening devices adopt a bilateral synchronous adjustment structure, which is not convenient for independent adjustment of one side. Some patients have asymmetrical tissue defects such as unilateral alveolar bone atrophy and unilateral attached gingival defects. When dealing with such cases, existing tooth widening devices are not only difficult to accurately control the unilateral expansion amplitude and force, but may also cause unnecessary compression damage to the healthy tissue on the healthy side. At the same time, the adjustment components of the tooth widening device are mostly exposed on the instrument surface and lack anti-accidental touch limiting structures. Doctors may accidentally touch the adjustment knob, lead screw and other components during operation, resulting in sudden changes in expansion amplitude and deviation of adjustment parameters.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing width extender. Summary of the Invention

[0005] The purpose of this invention is to provide a widening device for dental implant restoration, which solves the problems mentioned in the background technology, such as the inconvenience of accurately controlling the unilateral expansion amplitude and force and the lack of anti-accidental touch limiting structure, which may cause doctors to accidentally touch the adjustment knob, lead screw and other components during operation. The technical solution of this invention provides a solution that is significantly different from the existing technology, which is too simple.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a widening device for dental implant restoration, comprising a protective shell, expansion blocks provided on both sides of the protective shell, a fixing bolt provided at the back end of the protective shell, an adjustment mechanism provided in the bottom cavity of the protective shell, and a limit component provided in the top cavity of the protective shell;

[0007] The adjusting mechanism is rotatably connected to the adjusting worm gear on the inner wall of the bottom cavity of the protective housing. A worm wheel is rotatably connected to the inner wall of the bottom cavity of the protective housing, located on one side of the adjusting worm gear. A ratchet is rotatably connected to the inner wall of the middle area of ​​the worm wheel. A pawl is rotatably connected to the inner wall of the worm wheel, located around the ratchet, via a torsion spring. A connecting post is fixedly connected to the surface of the central area of ​​the pawl. The connecting post extends out of the bottom of the worm wheel and is fixedly connected to a gear. A push rod is limited and slidably connected to one side of the gear. A rotating component is provided at the top of the adjusting worm gear.

[0008] Preferably, the rotating assembly includes a rotating rod disposed inside the adjusting worm gear. The rotating rod slides vertically within a groove on the inner wall of the adjusting worm gear. A first spring is fixedly connected to the bottom of the rotating rod, and the other end of the first spring is connected to the inner wall of the adjusting worm gear. The rotating rod extends out of the top of the protective housing and is fixedly connected to an adjusting knob. A sealing protrusion is fixedly connected to the outer surface of the rotating rod below the adjusting knob. Limiting posts are fixedly connected to the top of the protective housing on both sides of the adjusting knob. Adjusting holes are evenly distributed on the outer surface of the adjusting knob.

[0009] Preferably, the limiting component includes a movable plate sleeved around the rotating rod. A second spring is fixedly connected to both ends of the bottom of the movable plate, and the other end of the second spring is connected to the inner wall of the top cavity of the protective housing. A fixing block is fixedly connected to the bottom of the top cavity of the protective housing around the rotating rod. An abutment block is laterally limited and slidably positioned within a sliding groove formed at both ends of the top of the fixing block. A third spring is fixedly connected to the outer side of the bottom end of the abutment block, and the other end of the third spring is connected to the inner wall of the top sliding groove of the fixing block. A clamping block is fixedly connected to the inner side of the abutment block, and a pushing block is fixedly connected to the bottom of the movable plate corresponding to the position of the abutment block.

[0010] Preferably, the thread on the surface of the adjusting worm is configured as two segments, and the two segments have the same direction of rotation. There are two sets of worm wheels, which are centrally symmetrically distributed on both sides of the adjusting worm. The tooth surfaces of the two sets of worm wheels respectively mesh with the thread on the surface of the adjusting worm.

[0011] Preferably, the ratchet teeth mesh with the pawl, the push rod is provided in two sets, and the two sets of push rods are evenly provided with several sets of teeth on the side that is far apart, and the gear teeth mesh with the teeth.

[0012] Preferably, the contact surface of the contact block is configured as an inclined structure, and the bottom of the pushing block abuts against the inclined surface of the contact block.

[0013] Preferably, the two sets of push rods extend out of the protective housing and are fixedly connected to the inner surface of the extension blocks provided on both sides of the protective housing. The outer surface of the extension blocks is made of silicone material.

[0014] Preferably, there are two sets of fixing bolts, which are located on the surface of the protective shell and are distributed in a centrally symmetrical manner.

[0015] Preferably, the clamping surface of the clamping block is provided with a rubber anti-slip pad.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention comprises an adjusting worm, a worm wheel, a ratchet, a pawl, a connecting post, a gear, a push rod, and a rotating assembly. The rotating assembly drives the adjusting worm to rotate to one side, which in turn drives the worm wheel on the opposite side. The pawl inside the worm wheel meshes with the ratchet to form a one-way transmission structure. The rotation of the worm wheel drives the ratchet to rotate, which in turn drives the gear to rotate. The gear meshes with the teeth on the surface of the push rod. The rotation of the gear drives the push rod to slide laterally, thereby pushing the single-sided extension block outward for adjustment. Since the threads on the surface of the adjusting worm are the same, the worm wheel on the other side rotates in the opposite direction. The pawl and ratchet do not mesh, and the worm wheel on the other side spins idly without adjustment. Similarly, the rotating assembly drives the adjusting worm to rotate to the other side for adjustment, achieving precise widening of the alveolar bone and gingiva on one side. The other side can remain stationary or be adjusted to different degrees as needed, solving the problem of compression of the healthy side tissue by traditional synchronous adjustment.

[0018] 2. This invention comprises a movable plate, a fixed block, a contact block, a clamping block, and a pushing block. When adjustment is required, pressing down on the adjustment knob causes the rotating rod to move synchronously downwards through the sealing protrusion, which in turn moves the movable plate downwards. The moving plate then moves the pushing block downwards, pushing the contact block to slide towards each other along the groove on the top of the fixed block, compressing the third spring. The contact block then causes the inner clamping blocks to move synchronously relative to each other, moving the two sets of clamping blocks away from the surface of the rotating rod, thus unlocking it for rotational adjustment. When no adjustment is needed, the contact blocks move closer together under the action of the third spring, causing the clamping blocks to move closer together and clamp the rotating rod. The rubber anti-slip pads on their surfaces increase friction, limiting the rotation of the rotating rod and effectively locking the adjustment range. This prevents parameter deviations caused by accidental contact with the adjustment components during surgical operations. The sealing protrusion simultaneously seals the inside of the instrument, preventing the intrusion of oral secretions and extending the instrument's service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a top sectional view of the overall structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4This is a frontal cross-sectional view of the overall structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the worm gear and worm structure of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B;

[0025] Figure 7 This is a schematic diagram of the clamping block and rotating rod structure of the present invention.

[0026] In the diagram: 1. Protective housing; 2. Extension block; 3. Fixing bolt; 41. Adjusting worm gear; 42. Worm wheel; 43. Ratchet; 44. Pawl; 45. Connecting post; 46. Gear; 47. Push rod; 481. Rotating rod; 482. Adjusting knob; 483. Sealing protrusion; 484. Limiting post; 51. Moving plate; 52. Fixing block; 53. Abutting block; 54. Clamping block; 55. Pushing block. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] Please see Figures 1-7 The present invention provides a technical solution for a widening device for dental implant restoration: a widening device for dental implant restoration includes a protective shell 1, expansion blocks 2 on both sides of the protective shell 1, a fixing bolt 3 on the back end of the protective shell 1, two sets of fixing bolts 3, the two sets of fixing bolts 3 are located on the surface of the protective shell 1 and are centrally symmetrically distributed, an adjustment mechanism is provided in the bottom cavity of the protective shell 1, and a limit component is provided in the top cavity of the protective shell 1;

[0029] The two sets of fixing bolts 3 at the back of the protective shell 1 complete the basic fixation of the instrument, ensuring that there is no overall displacement during the adjustment process. The silicone surface of the extension block 2 fits the alveolar bone and gingival tissue to avoid hard contact damage.

[0030] An adjusting worm gear 41 is rotatably connected to the inner wall of the bottom cavity of the protective housing 1. A worm wheel 42 is rotatably connected to the inner wall of the bottom cavity of the protective housing 1, located on one side of the adjusting worm gear 41. A ratchet 43 is rotatably connected to the inner wall of the middle area of ​​the worm wheel 42. A pawl 44 is rotatably connected to the inner wall of the worm wheel 42, located around the ratchet 43, via a torsion spring. A connecting post 45 is fixedly connected to the surface of the central area of ​​the pawl 44. The connecting post 45 extends out of the bottom of the worm wheel 42 and is fixedly connected to a gear 46. A push rod 47 is limited and slidably connected to one side of the gear 46. Two sets of push rods 47 extend out of the protective housing 1 and are connected to the protective housing. The inner surfaces of the extension blocks 2 on both sides are fixedly connected, and the outer surfaces of the extension blocks 2 are made of silicone. The teeth of the ratchet 43 mesh with the pawl 44. There are two sets of push rods 47, and several sets of teeth are evenly arranged laterally on the side of the two sets of push rods 47 that are far apart. The teeth of the gear 46 mesh with the teeth. The thread on the surface of the adjusting worm 41 is set to two segments, and the two segments of the thread have the same direction of rotation. There are two sets of worm wheels 42, which are centrally symmetrically distributed on both sides of the adjusting worm 41. The teeth of the two sets of worm wheels 42 mesh with the threads on the surface of the adjusting worm 41. A rotating component is provided at the top of the adjusting worm 41.

[0031] The rotation of the rotating rod 481 drives the adjusting worm 41 at the bottom to rotate synchronously. The rotation of the adjusting worm 41 drives the worm wheel 42 on the opposite side to rotate. The pawl 44 inside the worm wheel 42 meshes with the ratchet 43 to form a one-way transmission structure. The rotation of the worm wheel 42 can drive the ratchet 43 to rotate. The rotation of the ratchet 43 drives the connecting column 45 fixedly connected to its bottom to rotate. The rotation of the connecting column 45 drives the gear 46 to rotate. The gear 46 meshes with the teeth on the surface of the push rod 47. The rotation of the gear 46 drives the push rod 47 to slide laterally, thereby pushing the corresponding side extension block 2 to extend outward for adjustment.

[0032] In one embodiment of the present invention, the rotating assembly includes a rotating rod 481 disposed inside the adjusting worm gear 41. The rotating rod 481 is vertically limited and slides within a groove opened on the inner wall of the adjusting worm gear 41. A first spring is fixedly connected to the bottom of the rotating rod 481, and the other end of the first spring is connected to the inner wall of the adjusting worm gear 41. The rotating rod 481 extends out of the top of the protective housing 1 and is fixedly connected to an adjusting knob 482. A sealing protrusion 483 is fixedly connected to the outer surface of the rotating rod 481 below the adjusting knob 482. Limiting posts 484 are fixedly connected to the top of the protective housing 1 on both sides of the adjusting knob 482. Adjusting holes are evenly opened on the outer surface of the adjusting knob 482.

[0033] The rotation of the adjustment knob 482 drives the rotation rod 481 to rotate, and the rotation of the rotation rod 481 drives the adjustment worm gear 41 at the bottom to rotate synchronously. The sealing protrusion 483 synchronously achieves internal sealing of the instrument, preventing oral secretions from entering and extending the service life of the instrument. The limiting post 484 limits the rotation range of the adjustment knob 482, and the rotation angle of a single adjustment hole is 90 degrees.

[0034] In one embodiment of the present invention, the limiting component includes a movable plate 51 sleeved around the rotating rod 481. The bottom two ends of the movable plate 51 are fixedly connected to a second spring. The other end of the second spring is connected to the inner wall of the top cavity of the protective housing 1. The bottom of the top cavity of the protective housing 1 is fixedly connected to a fixing block 52 around the rotating rod 481. The top two ends of the fixing block 52 have a sliding groove for lateral limiting and sliding of an abutment block 53. The bottom outer side of the abutment block 53 is fixedly connected to a third spring. The other end of the third spring is connected to the inner wall of the top groove of the fixing block 52. The inner side of the abutment block 53 is fixedly connected to a clamping block 54. The bottom of the movable plate 51 is fixedly connected to a pushing block 55 corresponding to the position of the abutment block 53. The abutment surface of the abutment block 53 is set as an inclined structure. The bottom of the pushing block 55 abuts against the inclined surface of the abutment block 53.

[0035] During adjustment, press down on the adjustment knob 482. In order for the rotating rod 481 to abut against the sealing protrusion 483 and drive the moving plate 51 to move down synchronously, the moving plate 51 moves down and drives the pushing block 55 to move down as well. The pushing block 55 moves down and abuts against the inclined surface of the abutment block 53, converting the downward pressure into a lateral thrust. This pushes the two sets of abutment blocks 53 to slide towards each other along the slide groove at the top of the fixed block 52, compressing the third spring. The relative movement of the abutment blocks 53 drives the clamping blocks 54 on their inner sides to move synchronously, so that the two sets of clamping blocks 54 move away from the surface of the rotating rod 481, thus unlocking. Conversely, it is locked when not adjusting.

[0036] In one embodiment of the present invention, the clamping surface of the clamping block 54 is provided with a rubber anti-slip pad.

[0037] Working principle: The widening device is placed in the target alveolar ridge area. The basic fixation of the device is completed by two sets of fixing bolts 3 at the back of the protective shell 1, ensuring no overall displacement during adjustment. The silicone surface of the expansion block 2 conforms to the alveolar bone and gingival tissue to avoid damage from hard contact. When unilateral adjustment is required, pressing down and rotating the adjustment knob 482 to one side will rotate the rotating rod 481. The rotation of the rotating rod 481 will drive the adjusting worm 41 at the bottom to rotate synchronously. The rotation of the adjusting worm 41 will drive the worm wheel 42 on the opposite side to rotate. The pawl 44 inside the worm wheel 42 meshes with the ratchet 43 to form a one-way transmission structure. The rotation of the worm wheel 42 can drive the ratchet. When ratchet 43 rotates, it drives the connecting post 45 fixedly connected to its bottom to rotate. The rotation of the connecting post 45 drives the gear 46 to rotate. The gear 46 meshes with the teeth on the surface of the push rod 47. The rotation of the gear 46 drives the push rod 47 to slide laterally, thereby pushing the corresponding side extension block 2 to extend outward for adjustment. Since the threads on the surface of the adjusting worm 41 are the same, the worm wheel 42 on the other side rotates in the opposite direction. The pawl 44 and ratchet 43 will not mesh, so the worm wheel 42 on the other side spins idly and does not make any adjustment. Similarly, by rotating the adjusting knob 482 in the opposite direction, the adjusting worm 41 is driven to rotate to the other side for adjustment, so as to achieve precise widening of the alveolar bone and gingiva on one side.

[0038] During adjustment, press down on the adjustment knob 482. This causes the rotating rod 481 to abut against the sealing protrusion 483, which in turn moves the moving plate 51 downwards. The downward movement of the moving plate 51 causes the pushing block 55 to move downwards as well. The pushing block 55 then abuts against the inclined surface of the abutment block 53, converting the downward pressure into a lateral thrust. This pushes the two sets of abutment blocks 53 to slide towards each other along the groove at the top of the fixed block 52, compressing the third spring. The relative movement of the abutment blocks 53 causes the clamping blocks 54 on their inner sides to move synchronously, moving the two sets of clamping blocks 54 away from the surface of the rotating rod 481, thus unlocking the rod. When no adjustment is being made, the abutment blocks 53 move closer to each other under the action of the third spring, causing the clamping blocks 54 to move closer to each other and clamp the rotating rod 481. The rubber anti-slip pads on their surfaces increase friction, limiting the rotation of the rotating rod 481 and effectively locking the adjustment range.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A broadener for oral implant restoration, comprising a protective housing (1), characterized in that: The protective shell (1) is provided with an expansion block (2) on both sides, a fixed bolt (3) is arranged at the back end of the protective shell (1), an adjusting mechanism is arranged in the bottom end cavity of the protective shell (1), and a limiting assembly is arranged in the top end cavity of the protective shell (1); The adjusting mechanism is a adjusting worm (41) rotationally connected to the inner wall of the bottom end cavity of the protective shell (1), a worm wheel (42) is rotationally connected to the inner wall of the bottom end cavity of the protective shell (1) and located on one side of the adjusting worm (41), a ratchet wheel (43) is rotationally connected to the inner wall of the intermediate region of the worm wheel (42), a pawl (44) is rotationally connected to the inner wall of the worm wheel (42) and located at the periphery of the ratchet wheel (43) through a torsional spring, a connecting column (45) is fixedly connected to the surface of the central region of the pawl (44), the connecting column (45) extends out of the bottom of the worm wheel (42) and is fixedly connected with a gear (46), a push rod (47) is limitingly and slidably arranged on one side of the gear (46), and a rotating assembly is arranged at the top end of the adjusting worm (41).

2. The expander for dental implant restoration according to claim 1, wherein: The rotating assembly comprises a rotating rod (481) arranged in the adjusting worm (41), the rotating rod (481) is vertically and limitingly slid in a sliding groove formed in the inner wall of the adjusting worm (41), a first spring is fixedly connected to the bottom of the rotating rod (481), the other end of the first spring is connected with the inner wall of the adjusting worm (41), the rotating rod (481) extends out of the top of the protective shell (1) and is fixedly connected with an adjusting knob (482), a sealing protrusion (483) is fixedly connected to the surface of the periphery of the rotating rod (481) and located below the adjusting knob (482), limiting columns (484) are fixedly connected to the top of the protective shell (1) and located on both sides of the adjusting knob (482), and adjusting holes are uniformly formed in the surface of the periphery of the adjusting knob (482).

3. The expander for dental implant restoration according to claim 2, wherein: The limiting assembly comprises a moving plate (51) sleeved on the periphery of the rotating rod (481), second springs are fixedly connected to the bottom of the moving plate (51) and located at both ends, the other ends of the second springs are connected with the inner wall of the top end cavity of the protective shell (1), a fixed block (52) is fixedly connected to the periphery of the rotating rod (481) and located at the bottom of the top end cavity of the protective shell (1), abutting blocks (53) are horizontally and limitingly slid in the sliding grooves formed at both ends of the top of the fixed block (52), third springs are fixedly connected to the bottom of the outer side of the abutting blocks (53) and located at the other ends, the other ends of the third springs are connected with the inner wall of the sliding groove of the top of the fixed block (52), clamping blocks (54) are fixedly connected to the inner side of the abutting blocks (53), and push blocks (55) are fixedly connected to the bottom of the moving plate (51) and located at the positions of the abutting blocks (53).

4. The expander for dental implant restoration according to claim 1, wherein: The threads on the surface of the adjusting worm (41) are provided in two sections, the rotation directions of the threads in the two sections are same, the worm wheels (42) are provided in two groups and are centrally and symmetrically distributed on both sides of the adjusting worm (41), and the tooth surfaces of the two groups of worm wheels (42) are respectively engaged with the threads on the surface of the adjusting worm (41).

5. The expander for dental implant restoration according to claim 2, wherein: The tooth surface of the ratchet wheel (43) is engaged with the pawl (44), the push rod (47) is provided with two groups, and the faraway side of the two groups of push rods (47) is uniformly provided with a plurality of groups of teeth in the transverse direction, and the tooth surface of the gear (46) is engaged with the teeth.

6. The expander for oral implant restoration according to claim 3, wherein: The abutting surface of the abutting block (53) is provided in an inclined structure, and the bottom of the push block (55) abuts against the inclined surface of the abutting block (53).

7. The expander of claim 1, wherein: The two groups of push rods (47) extend out of the protective shell (1) and are fixedly connected with the inner side surfaces of the expansion blocks (2) arranged on the two sides of the protective shell (1), and the outer side surfaces of the expansion blocks (2) are designed of silica gel material.

8. The expander of claim 1, wherein: The fixing bolts (3) are provided in two groups, the two groups of fixing bolts (3) are provided in penetration on the surface of the protective shell (1) and are distributed in a central symmetric manner.

9. The expander for use in oral implant restoration according to claim 3, wherein: The clamping surface of the clamping block (54) is provided with a rubber non-slip pad.

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