CN209360966U - A front traction bracket - Google Patents

Abstract

The utility model discloses a front traction bracket, which comprises a bracket connected to a fixed block, a forehead pad, a chin pocket and a traction bar; the traction bar is provided with two traction posts, and the traction post is provided with a traction bar. hook, the traction column is fixed on the traction bar through the adjustment nut; the two ends of the traction bar are provided with a length adjustment assembly, and the length adjustment assembly includes a length adjustment rod, an adjustment block and a fastening nail, and the adjustment block There is a three-way channel on the top, and the three-way channel includes a horizontal channel and a vertical channel; the length adjustment component is connected to the bracket through a connecting piece. The tractor in the utility model is provided with a length adjustment assembly on the traction cross bar, and the length adjustment assembly can adjust the length of the traction cross bar, so the doctor can adjust the length of the traction cross bar at any time during the treatment process according to the patient's treatment situation .

Description

A front traction bracket

technical field

The invention belongs to the technical field of oral medical instruments, in particular to a front traction bracket.

Background technique

Skeletal class III malocclusion is one of the common clinical malocclusions, defined as an abnormality in the relative position of the upper and lower jaws, including the anterior position of the mandible relative to the maxilla, or the posterior position of the maxilla relative to the mandible, or a compound appearance. Studies have shown that 42% to 63% of skeletal class III malocclusions are accompanied by varying degrees of underdevelopment of the maxilla. Therefore, for such patients, anterior traction should be performed during the peak period of maxillary growth and development, relying on the gap between the maxillary bone sutures. The bone deposition and growth of the maxilla move the maxilla forward and adjust the sagittal relationship between the upper and lower jaws; after the front traction is completed, the molars are pushed back with the pendulum push molar device, and the first molars are moved far away. To solve the maxillary crowding and provide space, so as to effectively correct the skeletal class III malocclusion.

The front traction device in the prior art is divided into two parts: one part is the intraoral part, which is mainly used to bear the traction force; the other part is the extraoral part, which is used as the extraoral anchorage part in the maxillary front traction orthosis, and is used to align the maxillary bone. For extracorporeal auxiliary corrective traction.

The existing front traction device includes a bracket, a forehead pad and a chin pocket. The bracket, the forehead pad and the chin pocket are connected into one body through a fixed block. There are two traction sleeves, and the traction sleeve is relatively fixed to the traction bar through the set screw. When in use, the front tractor is worn in front of the head through the forehead pad and chin pocket, and the elastic ring is directly hooked to the set screw of the traction sleeve. On the upper side, adjust the position horizontally forward and backward through the movable joints to make it suitable for the facial shape, and use the elastic ring to pull the teeth in the mouth forward for correction. Now there is the following problem:

1) During the treatment process, the doctor will adjust the traction crossbar at any time according to the patient's treatment situation, but the existing traction crossbar is fixed on the bracket and cannot be adjusted, and the length of the traction crossbar cannot be adjusted;

2) When the forehead pad is in contact with the patient's head, the friction force is not enough and it is easy to slide.

Utility model content

The utility model provides a front traction bracket. The traction bracket is connected to the bracket through a length adjustment component. The length condition component can adjust the length of the traction bracket. The structure is simple and easy to operate.

In order to achieve the above object, the utility model adopts the following technical solutions.

A front traction bracket, comprising a bracket connected to a fixed block, a forehead pad, a chin pocket and a traction bar; the traction bar is provided with two traction columns, and the traction column is provided with a traction hook. The column is fixed on the traction cross bar through the adjustment nut; the two ends of the traction cross bar are provided with a length adjustment assembly, and the length adjustment assembly includes a length adjustment rod, an adjustment block and a fastening nail, and the adjustment block is provided with a three-way channel , the three-way channel includes a horizontal channel and a vertical channel, the horizontal channel is used for the length adjustment rod and the traction bar to pass through, the vertical channel is provided with internal threads, and the fastening nail matches the vertical channel, It is also provided with an external thread matching the internal thread in the vertical channel; the length adjustment assembly is connected to the bracket through a connecting piece.

Further, the side of the forehead pad attached to the skin is provided with wavy lines, the wavy lines can increase the friction force so that the forehead pad is not easy to move on the skin, and this structure can increase the friction force when the forehead pad contacts the patient's head , so that the forehead pad is not easy to slip.

Further, the draw bar is parabolic.

Further, the connecting piece has a semicircular structure, and an arc-shaped through groove is provided on the connecting piece, and the length adjusting rod is provided with a fixing part matching the connecting through groove, and the fixing part is fixed by a fixing nut On the connecting part, this structure can adjust the angle between the traction bar and the bracket, which is convenient for the doctor to adjust the traction bracket according to the patient's treatment situation at any time during the treatment process.

Further, the bracket, the traction cross bar, and the length adjustment bar are made of stainless steel.

Further, the forehead pad and the chin pocket are silicone components.

Beneficial effects of the utility model: the tractor in the utility model is provided with a length adjustment assembly on the traction cross bar, and the length adjustment assembly can adjust the length of the traction cross bar, so the doctor can adjust the length according to the patient's treatment condition during the treatment process. Adjust the length of the drawbar at any time.

Description of drawings

Fig. 1 is a structural schematic diagram of the tractor described in the utility model.

Fig. 2 is a schematic diagram of the structure of the traction cross bar in the utility model.

Fig. 3 is a structural schematic diagram of the connector described in the present invention.

Fig. 4 is a structural schematic diagram of the forehead pad of the present invention.

Detailed ways

The idea, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without paying creative efforts, All belong to the protection scope of the utility model. In addition, all the connection/connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions. The various technical features in the invention can be combined interactively on the premise of not conflicting with each other.

Referring to Figures 1 to 4, a front traction bracket includes a bracket 1 connected to a fixed block, a forehead pad 2, a chin pocket 3, and a traction cross bar 4; two traction columns 44 are arranged on the traction cross bar, so The traction column 44 is provided with a traction hook, and the traction column 44 is fixed on the traction cross bar 4 through an adjustment nut; the two ends of the traction cross bar 4 are provided with a length adjustment assembly, and the length adjustment assembly includes a length adjustment rod 41 , adjusting block 42 and fastening nail 43, described adjusting block 42 is provided with three-way channel, and described three-way channel comprises horizontal channel and vertical channel, and described horizontal channel passes through for length adjustment bar 41 and traction bar 4 , the vertical passage is provided with an internal thread, the fastening nail 43 is matched with the vertical passage, and is provided with an external thread matched with the internal thread in the vertical passage; the length adjustment assembly is connected to the on bracket 1.

Further, the side of the forehead pad 2 attached to the skin is provided with a wave pattern, as shown in Figure 4, the wave pattern can increase the friction force so that the forehead pad 2 is not easy to move on the skin, and this structure can increase the size of the forehead pad 2. The friction force when in contact with the patient's head makes the forehead pad 2 not easy to slip.

Further, the traction bar 4 is parabolic.

Further, the connecting piece 5 is provided with an arc-shaped slot 51, and the length adjusting rod 41 is provided with a fixing portion 45 matching the connecting slot, and the fixing portion 45 is fixed 6 on the connecting piece 5 by a fixing nut. , this structure can adjust the angle between the traction bar 4 and the bracket 1, which is convenient for the doctor to adjust the traction bar 4 according to the patient's treatment situation at any time during the treatment process.

Further, the bracket 1, the traction bar 4, and the length adjustment bar 41 are made of stainless steel.

Further, the forehead pad 2 and the chin pocket 3 are silicone components.

The preferred embodiments of the present utility model have been specifically described above, but the present invention is not limited to the described embodiments, and those skilled in the art can also make various equivalent modifications or modifications without violating the spirit of the present utility model. Replacement, these equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (6)

1. a kind of Anterior crossbite bracket, which is characterized in that bracket, volume pad, chin pocket and traction including fixed block phase downlink connection are horizontal Bar；It is set on the traction cross bar there are two trussed shore, the trussed shore is equipped with draw hook, and the trussed shore passes through adjusting nut It is fixed on traction cross bar；The traction cross bar both ends are equipped with length adjustment component, and the length adjustment component includes length tune Pole, adjusting block and fastening nail, the adjusting block are equipped with three circulation passages, and three circulation passage includes interconnection and leads to vertically Road, the interconnection are passed through for length adjustment bar and traction cross bar, and the Vertical Channel is equipped with internal screw thread, fastening nail and Vertical Channel matching, and be equipped with and the matched external screw thread of internal screw thread in Vertical Channel；The length adjustment component passes through connection Part is connected on bracket.

2. a kind of Anterior crossbite bracket according to claim 1, which is characterized in that the side that the volume pad is affixed on skin is set There is wave lines.

3. a kind of Anterior crossbite bracket according to claim 1, which is characterized in that the traction cross bar is parabolic type.

4. a kind of Anterior crossbite bracket according to claim 1, which is characterized in that the connector is semicircular structure, Arc-shaped slot is equipped on the connector, the length adjustment bar is equipped with and connect the matched fixed part of through slot, the fixation Portion is fixed on connector by fixture nut.

5. a kind of Anterior crossbite bracket according to claim 1, which is characterized in that the bracket, traction cross bar, length tune Pole is stainless steel component.

6. a kind of Anterior crossbite bracket according to claim 1, which is characterized in that the volume pad is silica gel structure with chin pocket Part.