CN220175263U

CN220175263U - Adjustable towing hook

Info

Publication number: CN220175263U
Application number: CN202320705606.XU
Authority: CN
Inventors: 赖奕潮; 李祖安; 谢卓; 马金龙
Original assignee: Guangzhou Riton Biomaterial Co Ltd
Current assignee: Guangzhou Riton Biomaterial Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-12-15
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses an adjustable towing hook, comprising: a fixing piece, a hook piece and a fastener. In the later correction period, after the elastic piece for ligation is loosened, the length of the traction hook can be freely adjusted, so that the correction teeth can be ensured to continuously receive enough correction force, and the correction efficiency is improved; when the traction hook is applied to different patients, if the heights of the impedance centers are different, the traction hook can also adapt to different crowds by adjusting the length of the traction hook, so that the universality of the traction hook is improved. The utility model has simple and convenient operation and time saving, can quickly complete the length adjustment of the traction hook, and saves the time beside a chair; meanwhile, the length adjusting mechanism is equivalent to the inside of the traction hook, the whole structure of the traction hook is simple, the size is small, and the foreign body sensation in the mouth of a patient is relieved.

Description

Adjustable towing hook

Technical Field

The utility model relates to the field of orthodontic treatment, in particular to an adjustable traction hook.

Background

It is desirable to apply reasonable, sufficient orthodontic forces to the teeth, requiring an orthodontic system to provide corresponding anchorage forces. Reasonable anchorage control is a key factor in ensuring that teeth achieve ideal movement.

The correcting traction hook is used as a carrier for applying correcting force and is a common correcting appliance for interjaw and intra-jaw traction. The traction hook is used as the intermediate connection of the supporting teeth and the correcting teeth, and provides enough supporting force through one supporting tooth or a group of supporting teeth, and elastic pieces such as rubber rings are hung on the traction hook to apply continuous correcting force to the correcting teeth.

At present, towing hooks are commonly designed for a fixed length. Clinically, as the correction process progresses, elastic elements such as rubber rings and ligature wires can be loosened, the released elastic force is gradually weakened, and meanwhile, the length of a traction hook is not adjustable, so that the correction force applied in the later correction period can be continuously reduced, and the orthodontic efficiency is further affected.

The elastic piece with larger elasticity is selected in the initial stage of correction, so that the problem can be avoided. However, this measure brings great treatment pain to the patient, and also takes into account the optimal range of the correction force to avoid the excessive correction force from pressing the periodontal ligament blood vessel and affecting the blood supply of the periodontal ligament.

The height and location of the impedance center will also vary based on the difference in root length for different patients. The existing traction hook is difficult to adapt, the elastic piece is required to be adjusted to compensate, and the time beside a chair is long.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide an adjustable traction hook which can solve the problem that the length of the existing traction hook cannot be freely adjusted.

The utility model is realized by the following technical scheme:

an adjustable hitch, comprising: one end of the fixing piece is provided with an installation part for connecting an arch wire or a bracket, and the other end of the fixing piece is provided with an external thread part; a hollow inner cavity is formed in the fixing piece, the hollow inner cavity is opened from one end of the external thread part, and the depth direction of the hollow inner cavity extends along one end of the installation part; hook piece, including integrated into one piece: a sleeving part and a hook part; one end of the sleeving part is movably spliced in the hollow inner cavity of the fixing piece, and the other end of the sleeving part is connected with the hook part; one end of the fastener is sleeved outside the sleeved part of the hook piece, and the fastener is provided with internal threads; the fastener is in threaded connection with the fixing piece so as to lock the inserting position of the hook piece.

Further, a clamping groove is formed in the mounting part, and the structure of the clamping groove is matched with the shape of the arch wire; the clamping groove is used for being connected with the bow wire in a threaded mode.

Further, the opening position of the clamping groove is provided with an inverted concave structure for tightly buckling the arch wire, and the inverted concave structure extends along the inner side direction of the clamping groove.

Further, the fixing piece is a metal piece.

Further, the external thread portion is uniformly provided with a plurality of strip-shaped grooves, and the strip-shaped grooves extend along the axial direction of the external thread portion so that the external thread portion forms an expandable structure in the radial direction.

Further, the inner diameter of the external thread part is smaller than the outer diameter of the sleeving part of the hook piece.

Further, the hook member further includes: a spherical portion; the diameter of the spherical part is larger than that of the hook part, and the tail end of the hook part is fixedly connected to the bottom of the spherical part.

Further, the fastening piece is sleeved at the arc end of which one end is in smooth transition.

Further, the fixing piece further comprises a main body part, and two ends of the main body part are respectively connected with the mounting part and the external thread part; the outer diameter of the body portion is the same as the outer diameter of the fastener such that the outer periphery of the body portion engages the outer periphery Zhou Pinghua of the fastener.

Further, the joint position of the sleeve joint part and the hook part is of a smooth transition arc structure.

Compared with the prior art, the utility model has the following beneficial effects:

when the length of the traction hook needs to be adjusted, loosening the fastener, and changing the inserting position of the hook piece; when the length is required to be shortened, the hook piece is pushed into the hollow inner cavity of the fixing piece, and when the length is required to be increased, the hook piece is pulled out towards the outer direction. After the length is adjusted to a proper length, the fastener is screwed, so that the plugging position of the hook piece is locked, and the free adjustment of the length of the traction hook is realized.

In the later correction period, after the elastic piece for ligation is loosened, the length of the traction hook can be freely adjusted, so that the correction teeth can be ensured to continuously receive enough correction force, and the correction efficiency is improved; when the traction hook is applied to different patients, if the heights of the impedance centers are different, the traction hook can also adapt to different crowds by adjusting the length of the traction hook, so that the universality of the traction hook is improved.

The utility model has simple and convenient operation and time saving, can quickly complete the length adjustment of the traction hook, and saves the time beside a chair; meanwhile, the length adjusting mechanism is equivalent to the length adjusting mechanism arranged inside the traction hook, the whole structure of the traction hook is simple, the size is small, and the foreign body sensation in the mouth of a patient is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 shows a side view of the present utility model;

FIG. 3 shows a cross-sectional view of the present utility model;

FIG. 4 is a schematic diagram showing the connection between the fixing member and the hooking member;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 shows an exploded view of the present utility model.

In the figure: 10. a fixing member; 11. a mounting part; 111. a clamping groove; 112. an inverted concave structure; 12. an external thread portion; 121. a strip-shaped groove; 13. a main body portion; 14. a hollow interior cavity; 20. a hook member; 21. a socket joint part; 22. a hook part; 23. a spherical portion; 30. a fastener.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

In the description of the present utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model discloses an adjustable traction hook which is used in an orthodontic system and is used for hanging an elastic piece to apply correction force to correction teeth.

Referring to fig. 1-3, such an adjustable hitch includes: a fixing member 10, a hooking member 20, and a fastening member 30.

Wherein, one end of the fixing piece 10 is provided with a mounting part 11 for an arch wire or a bracket, the traction hook can be fixed on the arch wire for use or the bracket for use, and one end of the traction hook provided with the mounting part 11 is used for providing supporting force. The other end of the fixing member 10 opposite to the mounting portion 11 is provided with an external screw portion 12, and an external screw is formed on the outer periphery of the external screw portion 12. The fixing member 10 has a hollow cavity 14 formed therein, the hollow cavity 14 being open from one end of the male screw portion 12, and a depth direction thereof extending along one end of the mounting portion 11, that is, the hollow cavity 14 penetrating the inside of the fixing member 10 and the male screw portion 12.

Referring to fig. 3, the hook member 20 includes an integrally formed socket portion 21 and a hook portion 22, one end of the socket portion 21 passes through the external thread portion 12 and is movably inserted into the hollow inner cavity 14 of the fixing member 10, the other end of the socket portion 21 is connected with the hook portion 22, and the hook portion 22 is used for hanging elastic members such as rubber bands and ligature rings; one end of the elastic members is hung on the hook portion 22, and the other end is connected to the orthodontic tooth, so that the elastic members release the elastic force and act on the orthodontic tooth.

The inside car of fastener 30 has the internal thread, and the one end cover of fastener 30 is established outside the cup joint portion 21 of couple piece 20, and after the spiro union is fixed between fastener 30 and mounting 10, fastener 30 can hold tightly the cup joint portion 21 of couple piece 20 simultaneously to the grafting degree of depth of fixed couple piece 20.

Referring to fig. 6, when the length of the hitch is to be adjusted, the fastener 30 is loosened to change the insertion position of the hitch member 20; when the length is required to be shortened, the hook member 20 is pushed into the hollow cavity 14 of the fixing member 10, and when the length is required to be increased, the hook member 20 is pulled out in the outer direction. After the length is adjusted to a proper length, the fastener 30 is screwed tightly, so that the plugging position of the hook piece 20 is locked, and the free adjustment of the length of the traction hook is realized.

Preferably, the present utility model is used in conjunction with an archwire. The clamping groove 111 is formed in the mounting portion 11, the structure of the clamping groove 111 is matched with the shape of an arch wire, the clamping groove 111 is buckled and connected to the arch wire, and the traction hook is mounted. Further, in order to prevent the release from the archwire, the opening of the slot 111 is further provided with a concave structure 112 for tightly engaging the archwire, and the concave structure 112 extends along the inner side of the slot 111 to form a stable engaging relationship with the archwire.

Preferably, the fixing member 10 is made of metal, which has a certain elasticity. Referring to fig. 4-5, further, the external thread portion 12 is uniformly provided with a plurality of strip-shaped slots 121, the strip-shaped slots 121 extend along the axial direction of the external thread portion 12, so that the external thread portion 12 forms a plurality of portions with intervals in the circumferential direction uniformly, and the external thread portion 12 forms an expandable structure in the radial direction, thereby ensuring that the hook member 20 can be easily inserted into the fixing member 10, and is not easy to loose after insertion. Further, the internal diameter of the male screw portion 12 is smaller than the socket portion 21 of the fastener 30, ensuring the socket stability.

In order to prevent elastic members such as rubber rings from being separated from the traction hooks, preferably, the end of the hooking portion 22 is further provided with a spherical portion 23, the diameter of the spherical portion 23 is larger than that of the hooking portion 22, and the end of the hooking portion 22 is fixed at the bottom of the spherical portion 23. When one end of the elastic member is hung on the traction hook, the elastic member is limited by the spherical portion 23, so that the elastic member is not easy to fall off.

In order to prevent the edge of the pulling hook from scratching the oral cavity, the fixing piece is preferably sleeved on the arc end of the hook piece 20 with smooth transition. Similarly, the fixing member 10 further includes a main body portion 13, and both ends of the main body portion 13 are respectively connected to the mounting portion 11 and the male screw portion 12; the outer diameter of the body portion 13 is the same as the outer diameter of the fastener 30 such that the outer circumference of the body portion 13 engages the outer periphery Zhou Pinghua of the fastener 30. Similarly, the joint position of the sleeve joint part 21 and the hook part 22 is in a smooth transition arc structure.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. An adjustable hitch, comprising:

one end of the fixing piece is provided with an installation part for connecting an arch wire or a bracket, and the other end of the fixing piece is provided with an external thread part; a hollow inner cavity is formed in the fixing piece, the hollow inner cavity is opened from one end of the external thread part, and the depth direction of the hollow inner cavity extends along one end of the installation part;

hook piece, including integrated into one piece: a sleeving part and a hook part; one end of the sleeving part is movably spliced in the hollow inner cavity of the fixing piece, and the other end of the sleeving part is connected with the hook part;

one end of the fastener is sleeved outside the sleeved part of the hook piece, and the fastener is provided with internal threads;

the fastener is in threaded connection with the fixing piece so as to lock the inserting position of the hook piece.

2. The adjustable hitch of claim 1, wherein a slot is provided in the interior of said mounting portion, said slot being configured to match the shape of an archwire; the clamping groove is used for being connected with the bow wire in a threaded mode.

3. The adjustable towing hook as in claim 2, wherein the open position of the slot is provided with an undercut for a tightly engaging archwire, the undercut extending in the direction of the inside of the slot.

4. The adjustable hitch of claim 1, in which said securing member is a metal member.

5. The adjustable hitch of claim 4, wherein said male threaded portion is uniformly formed with a plurality of elongated slots extending in an axial direction of said male threaded portion to provide said male threaded portion with an expandable structure in a radial direction.

6. The adjustable hitch of claim 5, in which said external threaded portion has an inner diameter less than an outer diameter of said female portion of said hitch member.

7. The adjustable hitch of claim 1, wherein said hitch member further comprises: a spherical portion; the diameter of the spherical part is larger than that of the hook part, and the tail end of the hook part is fixedly connected to the bottom of the spherical part.

8. The adjustable hitch of claim 1, in which said fastener is sleeved on a smoothly transitioned arcuate end of one end of said hitch member.

9. The adjustable hitch of claim 1, wherein said securing member further comprises a main body portion, two ends of said main body portion being connected to said mounting portion and said externally threaded portion, respectively; the outer diameter of the body portion is the same as the outer diameter of the fastener such that the outer periphery of the body portion engages the outer periphery Zhou Pinghua of the fastener.

10. The adjustable hitch of claim 2, in which the engagement location of said socket portion and said hitch portion is a smoothly transitioned arcuate configuration.