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CN-224220261-U - Orthodontic bracket

CN224220261UCN 224220261 UCN224220261 UCN 224220261UCN-224220261-U

Abstract

The utility model provides an orthodontic bracket, which comprises a bottom plate, wherein a fixing block is arranged on the bottom plate, the fixing block comprises an upper wing and a lower wing, a gap between the upper wing and the lower wing forms an arch wire groove, a boss is arranged on a vertical surface of the upper wing far away from the bottom plate, a first groove is arranged on a vertical surface of the boss far away from the bottom plate, the first groove is close to a vertical inner wall of the bottom plate, a limit bump is arranged on the vertical inner wall of the first groove, the limit bump divides the first groove into two placing grooves, a lock cover is slidably assembled on the outer side of the boss, a mounting groove is arranged on the vertical surface of the lock cover perpendicular to the bottom plate, a shaft wire is penetrated in the mounting groove, the outer wall of the shaft wire is in contact with the outer wall of the limit bump, the outer wall of the shaft wire is in contact with the inner wall of the mounting groove, and the shaft wire is made of a deformable material.

Inventors

  • ZHI WENBING
  • LIANG JUNRONG
  • LI JUNJIANG

Assignees

  • 广州创启医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20250415

Claims (8)

  1. 1. The orthodontic bracket comprises a bottom plate (101), wherein a fixed block (102) is arranged on the bottom plate (101), the fixed block (102) comprises an upper wing (103) and a lower wing (104), and an arch wire groove (111) is formed in a gap between the upper wing (103) and the lower wing (104), and the orthodontic bracket is characterized in that a boss (105) is arranged on a vertical surface, far away from the bottom plate (101), of the upper wing (103), and a first groove (106) is formed in a vertical surface, far away from the bottom plate (101), of the boss (105); A limiting lug (107) is arranged on the vertical inner wall, close to the bottom plate (101), of the first groove (106), the limiting lug (107) divides the first groove (106) into two placing grooves, the two placing grooves are positioned on two sides of the limiting lug (107), and the two placing grooves and the limiting lug (107) are linearly arranged; The outer side of the boss (105) is slidably provided with a lock cover (108), an installation groove is formed in a vertical surface of the lock cover (108) perpendicular to the bottom plate (101), a shaft wire (109) is arranged in the installation groove in a penetrating mode, the outer wall of the shaft wire (109) is in contact with the outer wall of the limit projection (107), and the outer wall of the shaft wire (109) is in contact with the inner wall of the installation groove; The shaft wire (109) is made of deformable materials, so that the shaft wire (109) deforms under the action of external force, and the position of the shaft wire can be adjusted in the two placing grooves in the first groove (106).
  2. 2. The orthodontic bracket of claim 1, wherein the wire (109) is formed of a nickel titanium alloy material that is adapted to return to its original shape under the influence of the temperature of the mouth after deformation.
  3. 3. The orthodontic bracket of claim 2, wherein the wire (109) is configured in a cylindrical configuration such that the load is spread through the arcuate surface of the wire (109) to prevent accidental removal of the locking cap (108) caused by localized breakage of the wire (109).
  4. 4. The orthodontic bracket of claim 1, wherein the locking cap (108) is provided with a through hole (110) in a penetrating manner, plugs are arranged at two ends of the through hole (110), a mounting groove is formed between the two plugs, two ends of the shaft wire (109) are connected with opposite surfaces of the two plugs, and the two ends of the shaft wire (109) are used for limiting the shaft wire (109) and avoiding the shaft wire (109) from deflecting in the moving process; the lock cover (108) forms a protruding structure (201) coaxial with the mounting groove corresponding to the outer side wall of the shaft wire (109), and the protruding structure (201) extends in a direction away from the bottom plate (101) and is used for giving way to the deformed shaft wire (109), so that the shaft wire (109) can conveniently cross the limit protruding block (107).
  5. 5. The orthodontic bracket of claim 1, wherein the boss (105), the first groove (106) and the limit bump (107) are all configured in a rectangular configuration to facilitate the outer side wall of the mating axle wire (109) to promote the limit effect on the axle wire (109).
  6. 6. The orthodontic bracket of claim 5, wherein the vertical outer walls on both sides of the first groove (106) are provided with sliding grooves (401), sliding rails (402) are symmetrically arranged on one side, facing the base plate (101), of the lock cover (108), the sliding rails (402) are matched with the sliding grooves (401), and the lock cover (108) is connected in the sliding grooves (401) in a sliding manner through the sliding rails (402).
  7. 7. The orthodontic bracket of claim 1, wherein the top surface of the lower wing (104) is provided with a second groove near the edge of the locking cover (108) for forming an operating groove (303) between the second groove and the locking cover (108), and the operating groove (303) is used for placing an unlocking tool to open the locking cover (108).
  8. 8. The orthodontic bracket of claim 7, wherein a first projection (301) is provided on a vertical surface of the lock cover (108) and on a side of the lock cover adjacent to the lower wing (104), a second projection (302) is provided on a vertical surface of the lower wing (104), and the first projection (301) and the second projection (302) form a force supporting point, so that stability and safety during unlocking operation are improved.

Description

Orthodontic bracket Technical Field The utility model relates to the technical field of oral brackets, in particular to an orthodontic bracket. Background The bracket is an important part for fixing the orthodontic technology, is directly adhered to the surface of the dental crown by using an adhesive, and applies various orthodontic forces to teeth by the archwire through the bracket, and is made of stainless steel, biological ceramics or composite resin. In the prior art, the self-locking bracket adopts a sliding type locking cover to replace the traditional ligature (with a rubber ring or ligature wire), so that the friction resistance between the arch wire and the bracket is obviously reduced, the light force correction is realized, and the comfort level of a patient is improved. However, the locking cover of the current self-locking bracket commonly adopts a simple sliding rail type locking structure, and the design has the obvious defects that alternating shearing force generated in the chewing process can form stress concentration along a sliding rail contact surface when the stress exceeds a critical value of the locking structure (namely, the locking cover can move up and down frequently due to friction force during chewing), the locking cover is easy to deviate off accidentally, for example, the locking cover deviates off, the correction force transmission is interrupted, the treatment process is prolonged, and even displacement recurrence occurs due to the fact that teeth lose continuous control, so that the stability of the correction effect is influenced. Disclosure of utility model In view of the above, the utility model provides an orthodontic bracket which can be deformed by an axial wire under external force to span a limiting projection to adjust the position, and can be restored to the original position by a shape memory effect at the temperature of an oral cavity, so as to be locked in a placing groove, thereby improving the dynamic load resistance and avoiding the locking cover from falling off. In order to solve the technical problems, the utility model provides an orthodontic bracket which comprises a bottom plate, wherein a fixing block is arranged on the bottom plate and comprises an upper wing and a lower wing, a gap between the upper wing and the lower wing forms an archwire slot, and the archwire slot is used for placing an archwire. The upper wing is provided with the boss on keeping away from the vertical face of bottom plate, has seted up first recess on keeping away from the vertical face of bottom plate of boss, and first recess can pour integrated into one piece through the mould when the preparation with the boss. The first recess is provided with spacing lug on being close to the vertical inner wall of bottom plate, and spacing lug divide into two standing grooves with first recess, and two standing grooves are located the both sides of spacing lug, and two standing grooves symmetry set up in the both sides of spacing lug, and two standing grooves are the linearity with spacing lug and arrange along vertical direction. The boss outside sliding fit has the locking closure, has all symmetrically seted up the spout on the vertical outer wall in first recess both sides, and the locking closure is provided with the slide rail towards bottom plate one side and the position that corresponds two spouts, and the spout on the locking closure and the slide rail looks adaptation (assemble through clearance fit promptly) on the first recess, and the locking closure passes through slide rail sliding connection in the spout. The locking closure is located boss and keeps away from bottom plate one side, is provided with the mounting groove on the vertical face of locking closure perpendicular to bottom plate (i.e. the mounting groove sets up on the vertical face of locking closure one side), still runs through on the locking closure and is provided with the through-hole, and the through-hole both ends are provided with the end cap, form the mounting groove between two end caps, wear to be equipped with the axle silk in the mounting groove, the lateral wall of axle silk is inconsistent with the outer wall of spacing lug, the outer wall of axle silk is inconsistent with the inner wall of mounting groove to make the axle silk transversely set up in two standing grooves. The two ends of the shaft wire are fixedly connected with the opposite surfaces of the two plugs, and the plugs are used for limiting the shaft wire, so that the shaft wire is prevented from deflecting in the moving process. The locking closure corresponds the coaxial protruding structure of axle silk lateral wall formation and mounting groove, and this protruding structure extends to the direction of keeping away from the bottom plate for step down the axle silk of deformation, the axle silk of being convenient for strides spacing lug, further promotes the speed of adjusting the locking closure, reduces the adjustment time