Adjustable push rod type appliance

Abstract

The utility model discloses an adjustable push rod type appliance which comprises a push rod, a spring is sleeved on the push rod in a sliding manner, a metal conduit is sleeved on the top of the push rod in a sliding manner, a supporting block is fixedly connected with the top of the metal conduit, and the top of the spring is fixedly connected with the bottom of the supporting block. And a fixing bolt is rotatably inserted into one end of the supporting block, the end, away from the fixing bolt, of the push rod is slidably sleeved with a blocking mechanism, and the outer portion of the blocking mechanism is sleeved with an adjusting knob in a threaded mode. The device disclosed by the utility model can be screwed by utilizing the adjusting knob with the inner surface thread structure according to the orthodontic force required clinically, so that the blocking mechanism is determined; the compression amount of the spring can be flexibly adjusted due to the application of the blocking mechanism, so that the orthodontic force is changed; compared with the traditional design, the improved design not only can reduce the inventory pressure of the appliance, but also can prevent the blocking mechanism from loosening by screwing the knob in the use process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an adjustable push rod type orthodontic appliance. Background Art

[0002] At present, push-rod mandibular advancement correction devices are used both at home and abroad, such as Forsus, Herbst, Jasper Jumper and other fixed functional appliances, which are mainly used to treat patients with mandibular retrusion during the growth and development period, and can also be used to strengthen intermaxillary support to treat Class II malocclusion.

[0003] There are some problems with push rod appliances currently on the market. When used clinically, they usually need to be positioned in the patient's centric jaw position, and a measuring tool is used to measure the distance from the distal end of the archwire tube to the distal end of the mandibular canine or first premolar bracket to determine the appropriate push rod length.

[0004] These push rods are usually available in different models, including 22mm, 25mm, 29mm, 32mm and 35mm, but with the appearance of mandibular advancement, the force of the appliance will decrease and it needs to be increased by the force ring. This clinical operation is relatively complicated and will lead to increased inventory pressure. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the above background technology that with the emergence of mandibular advancement effect, the force of the appliance will be reduced and force needs to be added through a force ring, and an adjustable push rod type appliance is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An adjustable push rod orthodontic appliance comprises a push rod, a spring is slidably sleeved on the push rod, a metal conduit is slidably sleeved on the top of the push rod, a support block is fixedly connected to the top of the metal conduit, the top of the spring is fixedly connected to the bottom of the support block, a fixing bolt is rotatably inserted at one end of the support block, a blocking mechanism is slidably sleeved on the end of the push rod away from the fixing bolt, and an adjusting knob is sleeved on the external thread of the blocking mechanism.

[0008] Preferably, the fixing bolt is L-shaped.

[0009] Preferably, a hook is fixedly connected to the bottom of the push rod.

[0010] Preferably, the blocking mechanism comprises a threaded tube, a blocking ring is fixedly connected to the top of the threaded tube, and an extrusion strip is provided at the bottom of the threaded tube.

[0011] Preferably, the outer wall of the adjusting knob is surrounded by transverse stripes.

[0012] Preferably, the push rod is made of stainless steel.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The device of the utility model can be tightened by using an adjustment knob with an inner surface thread structure according to the correction force required clinically, thereby determining the blocking mechanism; the use of the blocking mechanism makes it possible to flexibly adjust the spring compression amount, thereby changing the magnitude of the correction force; compared with the traditional design, this improved design can not only reduce the inventory pressure of the orthodontic appliance, but also prevent the blocking mechanism from loosening by tightening the knob during use;

[0015] 2. In the utility model, the pressure of the spring can be adjusted by sliding the blocking mechanism up and down, and then the adjustment knob is turned to fix the position of the blocking mechanism by squeezing the strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an adjustable push rod type appliance proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a blocking mechanism of an adjustable push rod type orthodontic appliance proposed by the utility model;

[0018] Figure 3 Schematic diagram of the installation of the appliance.

[0019] In the figure: 1 push rod, 2 spring, 3 fixing bolt, 4 extrusion strip, 5 adjustment knob, 6 hook, 7 threaded tube, 8 blocking ring, 9 support block, 10 metal guide tube, 11 orthodontic band, 12 orthodontic arch wire, 13 orthodontic bracket. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-2 An adjustable push rod type orthodontic appliance comprises a push rod 1, which is overlapped with a spring 2 to jointly generate a correction force. The push rod 1 is in distal contact with the canine or first premolar bracket of the patient to transmit the correction force. The push rod 1 is made of stainless steel, and a hook 6 is fixedly connected to the bottom of the push rod 1;

[0022] In this embodiment, a spring 2 is slidably sleeved on the push rod 1 to provide a force to push the mandible forward. The top of the spring 2 is fixedly connected to the bottom of the support block 9. A fixing bolt 3 is rotatably inserted at one end of the support block 9. The fixing bolt 3 is L-shaped and is used to stabilize the position of the orthodontic appliance. A metal guide tube 10 is slidably sleeved on the top of the push rod 1. The top of the metal guide tube 10 is fixedly connected to the support block 9 to guide the push rod 1 to slide. A blocking mechanism is slidably sleeved on the end of the push rod 1 away from the fixing bolt 3.

[0023] In this embodiment, the blocking mechanism includes a threaded tube 7, a blocking ring 8 is fixedly connected to the top of the threaded tube 7, and an extrusion strip 4 is provided at the bottom of the threaded tube 7 for adjusting the magnitude of the correction force. The device can flexibly change the compression amount of the spring 2, thereby adjusting the magnitude of the correction force;

[0024] In this embodiment, the outer thread of the blocking mechanism is sleeved with an adjusting knob 5, and the outer wall of the adjusting knob 5 is surrounded by transverse stripes for stabilizing the position of the blocking mechanism and ensuring the adjustment of the correction force.

[0025] In this embodiment, the pressure of the spring 2 can be adjusted by sliding the blocking mechanism up and down, and then the adjusting knob 5 is turned. The position of the blocking mechanism can be fixed by squeezing the strip 4, and the setting of the hook 6 can facilitate retention.

[0026] In this embodiment, one end of the fixing bolt 3 is inserted into the orthodontic band ring 11, and the hook 6 is clamped on the orthodontic arch wire 12. Then the device can be tightened according to the correction force required clinically by using the adjustment knob 5 with an inner surface threaded structure to determine the blocking mechanism; the use of the blocking mechanism makes it possible to flexibly adjust the compression amount of the spring 2, thereby changing the magnitude of the correction force; compared with the traditional design, this improved design can not only reduce the inventory pressure of the orthodontic appliance, but also prevent the blocking mechanism from loosening by tightening the adjustment knob 5 during use.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable push rod type orthodontic appliance, comprising a push rod (1), characterized in that: The push rod (1) is slidably sleeved with a spring (2), the top of the push rod (1) is slidably sleeved with a metal conduit (10), the top of the metal conduit (10) is fixedly connected with a support block (9), the top of the spring (2) is fixedly connected with the bottom of the support block (9), one end of the support block (9) is rotatably inserted with a fixing bolt (3), the end of the push rod (1) away from the fixing bolt (3) is slidably sleeved with a blocking mechanism, and the external thread of the blocking mechanism is sleeved with an adjusting knob (5).

2. The adjustable push rod appliance according to claim 1, characterized in that: The fixing bolt (3) is L-shaped.

3. The adjustable push rod appliance according to claim 1, characterized in that: A curved hook (6) is fixedly connected to the bottom of the push rod (1).

4. The adjustable push rod appliance according to claim 1, characterized in that: The blocking mechanism comprises a threaded tube (7), a blocking ring (8) is fixedly connected to the top of the threaded tube (7), and an extrusion strip (4) is provided at the bottom of the threaded tube (7).

5. The adjustable push rod appliance according to claim 1, characterized in that: The outer wall of the adjusting knob (5) is surrounded by transverse stripes.

6. The adjustable push rod appliance according to claim 1, characterized in that: The push rod (1) is made of stainless steel.

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