Nickel-titanium memory alloy expansion device

Abstract

The utility model relates to the technical field of orthodontic medical instruments, in particular to a nickel-titanium memory alloy arch expanding device, which comprises a connecting arm, a connecting rod and a connecting rod, the number of the tension adjusting arms is two, the tension adjusting arms are in a small w shape, the number of the force applying arms is two, and the force applying arms are in an arc shape; the multiple self-deformation joint filling pieces are installed on the two forcing arms respectively, and due to the arrangement of the self-deformation joint filling pieces, the possibility of gingival lesion of a patient caused by foreign matter blockage is avoided, and use is safer; meanwhile, the self-deformation joint filling piece can adapt to gingival conditions of different patients by adjusting the position of the self-deformation joint filling piece, and the self-deformation joint filling piece can be well attached to different periodontal joint shapes due to the deformable characteristic of the self-deformation joint filling piece, so that a better using effect is achieved; in addition, the same device can be used for providing effective and good treatment effects for different patients, and the treatment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oral orthodontic medical instruments, in particular to a nickel-titanium shape memory alloy arch expansion device. Background Art

[0002] Dental arch stenosis is a common malocclusion in orthodontic practice, often resulting in crowded and protruding teeth, affecting the patient's aesthetic and psychological well-being. Furthermore, dental arch stenosis is often accompanied by occlusal dysfunction, which affects chewing function and, in severe cases, can lead to temporomandibular joint (TMJ) disorders, resulting in joint clicking, pain, and even limited mouth opening.

[0003] Orthodontics is a treatment that applies different corrective forces to the teeth and jaws to cause tooth movement or jaw reshaping, thereby achieving the goal of correction. While orthodontic force has the three elements of force size, direction, and point of application, the continuity of force is also very important. The correction method for narrow dental arches is to use orthodontic appliances to expand the dental arches and restore the normal shape of the dental arches. The most commonly used arch expanders in orthodontic clinics are made of bent stainless steel wire, and the corrective force they generate is greater than the optimal corrective force. The occurrence of hyaline degeneration during tooth movement is also considered to be an inevitable alveolar change. The movement of teeth is a non-physiological alveolar remodeling. Patients react strongly and feel pain during the treatment process, and it may even cause root resorption.

[0004] In order to solve the above problems, a patent document with the announcement number "CN206612852U" discloses a nickel-titanium memory alloy expansion device, including: a connecting arm, a force-applying arm, and a retaining tube, wherein the two ends of the connecting arm are respectively connected to the force-applying arm through the retaining tube; the connecting arm is in the shape of an arch, and the two ends of the arch are in a small W shape, and the entire expansion device is in a large W shape. The retaining tube is made of a stainless steel tube or welded with a stainless steel tube and a stainless steel plate. The curvature of the stainless steel plate matches the shape of the inner side of the tooth, and the outer surface has a mesh structure. The utility model has a simple structure and is easy to bend. The superelasticity of the nickel-titanium memory alloy enables it to generate a soft and lasting correction force, avoiding damage to the teeth and surrounding tissues due to the normal rebound force of the teeth being restrained by the expander, and alleviating the pain and discomfort caused by the excessive force of the expander.

[0005] In the above-mentioned prior art, the force-adding arm that fits with the teeth creates a gap that does not fit with the gum gap when connected, which may cause foreign objects to block the roots during use, and in severe cases may even cause gum lesions in patients. Since the periodontal environment of each patient is different, adaptive bending is not only more difficult to manufacture, but also not conducive to repeated use, increasing treatment costs. Utility Model Content

[0006] The purpose of the present invention is to provide a nickel-titanium shape memory alloy arch expansion device to solve the problems raised in the above background technology.

[0007] The technical solution of the utility model is: a nickel-titanium shape memory alloy arch expansion device, comprising:

[0008] A connecting arm, wherein the connecting arm is n-shaped;

[0009] Tension adjustment arms, two of which are small W-shaped, are mounted on both ends of the connecting arm and are symmetrically arranged about the middle of the connecting arm;

[0010] A force-adding arm, wherein the force-adding arm is arc-shaped and two force-adding arms are provided, and the two force-adding arms are detachably connected to one end of the two tension-adjusting arms away from the connecting arm;

[0011] A self-deforming caulking piece, wherein a plurality of the self-deforming caulking pieces are provided and respectively installed on the two force-adding arms;

[0012] The self-deformable filler is filled with a deformable and expandable substance, which expands when physical conditions change and causes the self-deformable filler to deform and fill the gaps between teeth and between gums and the force-adding arm.

[0013] Preferably, the self-deforming filler comprises:

[0014] A deformable sealing piece, wherein the deformable sealing piece is a block with a slightly arc-shaped cross section;

[0015] A connecting hole is provided between the two ends of the deformable sealing piece, and the self-deforming sealing piece is movably sleeved on the force-adding arm through the connecting hole;

[0016] A deformable tip, formed on the side of the deformable sealing piece that is in close contact with the tooth, the deformable tip is a V-shaped reverse curved surface in the opposite direction of the bending direction of the deformable sealing piece cross section, and the middle portion of the deformable tip forms a protruding flexible tip;

[0017] Wherein, a cavity for filling with a deformable and expanding substance is provided in the deformable sealing piece.

[0018] Preferably, the self-deforming filler further comprises:

[0019] Anti-slip grooves, wherein the anti-slip grooves are provided in plurality and are respectively located on the two arc-shaped side walls of the deformed tip, and the multiple anti-slip grooves on the arc-shaped side walls of a single deformed tip are symmetrically arranged along the middle of the deformed sealing piece;

[0020] The anti-slip groove is also arc-shaped and has the same curvature direction as the side wall of the deformable sealing piece.

[0021] Preferably, the self-deforming filler further comprises:

[0022] The anti-slip convex points are provided in plurality and are integrally formed on the inner side wall of the connecting hole. The plurality of anti-slip convex points are evenly and staggeredly distributed along the inner side wall of the connecting hole.

[0023] Preferably, it also includes:

[0024] A connecting pipe, the connecting pipe is a sleeve, and a plurality of the connecting pipes are provided, and the plurality of connecting pipes are respectively used to sleeve and connect the connecting arm and the tension adjustment arm and the tension adjustment arm and the force-adding arm;

[0025] A flexible fixing ring, which is rotatably connected to the connecting tube connecting the tension adjustment arm and the force-applying arm by rotating the clamping shaft, and is located on the outer side of the connecting tube away from the connecting arm;

[0026] Wherein, the flexible fixing ring is a retractable and deformable elastic ring;

[0027] The stabilizing bow piece is detachably connected to the connecting arm, and the stabilizing bow piece is located inside the curved portion in the middle of the connecting arm. The stabilizing bow piece is an arc-shaped piece that fits the connecting arm.

[0028] Preferably, a limiting head is formed at the end of the force-adding arm away from one end of the tension-adjusting arm, the diameter of the limiting head is larger than the diameter of the force-adding arm, and the limiting head is spherical.

[0029] The present invention provides a nickel-titanium shape memory alloy arch expansion device through improvement, which has the following improvements and advantages compared with the prior art:

[0030] The utility model adopts the setting of the self-deforming filler, which produces an expansion and deformation effect as the temperature in the oral cavity changes after installation, thereby perfectly fitting the gaps between teeth and gums, as well as the gaps between the force-adding arm, thereby eliminating the gaps between the force-adding arm and the teeth or gums, avoiding the blockage of foreign matter when using the nickel-titanium memory alloy arch expansion device for correction, thereby avoiding the possibility of foreign matter blockage causing gingival lesions in patients, and making it safer to use;

[0031] At the same time, the position of the self-deformable filler can be adjusted to adapt to the gum conditions of different patients, and the deformable characteristics of the self-deformable filler itself can also fit well with the different gap shapes of each periodontium, bringing better use effects. Secondly, the same device can be used to provide effective and good treatment effects for different patients, reducing treatment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0033] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0034] Figure 2 This is a cross-sectional view of the self-deforming filler of the utility model from a first perspective;

[0035] Figure 3 This is a schematic structural diagram of the self-deforming caulking member of the utility model from a second viewing angle;

[0036] Figure 4 This utility model Figure 2 A magnified view of the structure at center A.

[0037] Description of reference numerals:

[0038] 1. Connecting arm; 2. Tension adjustment arm; 3. Force-adding arm; 301. Limiting head; 4. Connecting tube; 5. Self-deforming caulking piece; 501. Deformable sealing piece; 502. Connecting hole; 503. Deformable tip; 504. Anti-slip groove; 505. Anti-slip bump; 6. Flexible fixing ring; 601. Rotating clamping shaft; 7. Stabilizing bow piece. DETAILED DESCRIPTION

[0039] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] The present invention provides a nickel-titanium shape memory alloy arch expansion device through improvement. The technical solution of the present invention is:

[0041] like Figure 1-Figure 4 As shown, a nickel-titanium shape memory alloy arch expansion device comprises: a connecting arm 1, the connecting arm 1 is n-shaped;

[0042] There are two tension adjustment arms 2, each of which is in a small W shape. The two tension adjustment arms 2 are respectively mounted at both ends of the connecting arm 1 and are symmetrically arranged about the middle of the connecting arm 1;

[0043] The force adding arm 3 is arc-shaped and is provided with two force adding arms 3. The two force adding arms 3 are detachably connected to the ends of the two tension adjusting arms 2 away from the connecting arm 1. As can be seen from the above connection relationship, combined with the attached Figure 1 The main body of the nickel-titanium memory alloy arch expander (connecting arm 1 and tension adjustment arm 2) is made of nickel-titanium memory alloy, which has excellent superelasticity and shape memory effect. Its phase transition temperature Af is 30-37°C. It has a simple structure and is easy to bend. The superelasticity of nickel-titanium memory alloy enables it to produce a soft and long-lasting correction force, avoiding the normal recoil of the teeth due to the arch expander being restrained, and has a good correction effect.

[0044] A self-deformation filler 5, wherein a plurality of self-deformation fillers 5 are provided and are respectively installed on the two force-adding arms 3;

[0045] Among them, the self-deformable filling member 5 is filled with a deformable expansion material. The deformable expansion material expands when the physical conditions change and causes the self-deformable filling member 5 to deform and fill the gaps between the teeth and between the gums and the force-adding arm 3. The deformable expansion material is a particle made of nickel-titanium memory alloy or a water-absorbing expansion cotton or other objects. When the temperature rises or absorbs oral saliva (or artificially dripping water, when the self-deformable filling member 5 is made of a water-permeable elastic material), the self-deformable filling member 5 can produce a predetermined size of expansion deformation. From the above connection relationship, it can be seen that, combined with the attached Figure 1 and attached Figure 2 When using the nickel-titanium memory alloy arch expansion device for correction, before installing it in the oral cavity, an appropriate number of self-deformed fillers 5 should be installed on the two force-adding arms 3, and after installing it in the oral cavity, the self-deformed fillers 5 are made to fit the corresponding interdental gaps and gum gaps. After installation, as the temperature in the oral cavity changes or absorbs oral saliva, or the patient holds water of appropriate temperature in the mouth, they produce an expansion and deformation effect, thereby perfectly fitting the interdental gaps and gum gaps as well as the gaps between the force-adding arms 3, thereby achieving the purpose of eliminating the gaps between the force-adding arms 3 and the interdental or gum gaps, avoiding foreign body obstruction when using the nickel-titanium memory alloy arch expansion device for correction, thereby avoiding the possibility of foreign body obstruction causing gum lesions in patients, and making it safer to use.

[0046] At the same time, the position of the self-deformable filler 5 can be adjusted to adapt to the gum conditions of different patients, and the deformable characteristics of the self-deformable filler 5 itself can also fit well with the different gap shapes of each periodontium, bringing better use effect. Secondly, the same device can be used to provide effective and good treatment effects for different patients, reducing treatment costs.

[0047] Furthermore, the self-deforming filler 5 includes:

[0048] The deformable sealing piece 501 is a block-shaped body with a slightly curved cross section;

[0049] The connecting hole 502 is formed between the two ends of the deformable sealing piece 501, and the self-deformable sealing piece 5 can be movably mounted on the force-adding arm 3 through the connecting hole 502;

[0050] The deformable tip 503 is formed on the side of the deformable sealing piece 501 that is in close contact with the tooth. The deformable tip 503 is a V-shaped reverse curved surface that is opposite to the bending direction of the cross section of the deformable sealing piece 501. The middle portion of the deformable tip 503 forms a protruding flexible tip.

[0051] Among them, the deformable sealing piece 501 is provided with a cavity for filling the deformable expansion material. Figure 2 The deformable sealing piece 501 can be movably mounted on the force arm 3 through the connecting hole 502, so as to achieve the effect of being able to freely adjust the spacing, orientation and angle of each self-deformable filling piece 5, so that the self-deformable filling piece 5 can better adapt to different patients and the environment around each tooth in the mouth of different patients, and specifically use the deformable tip 503 for deformation and sealing, thereby achieving the purpose of flexible adaptation and bringing extremely good use effect.

[0052] Furthermore, the self-deforming filler 5 further includes:

[0053] Anti-slip grooves 504 are provided in plurality and are respectively located on the two arc-shaped side walls of the deformed tip 503. The multiple anti-slip grooves 504 on the arc-shaped side walls of a single deformed tip 503 are symmetrically arranged along the middle of the deformed sealing piece 501;

[0054] Among them, the anti-slip groove 504 is also arc-shaped and has the same bending direction as the side wall of the deformed blocking piece 501. From the above connection relationship, it can be seen that the anti-slip groove 504 is also arc-shaped and has the same bending direction as the side wall of the deformed blocking piece 501. Figure 2 and attached Figure 3 The anti-slip groove 504 can enhance the friction between the deformed tip 503 of the deformable sealing piece 501 and the teeth, so that while elastically sealing the gap, it can cooperate with the pressure of the force-adding arm 3 to prevent the self-deformable filler 5 from separating from the gap, making the sealing effect of the self-deformable filler 5 better, more stable and reliable.

[0055] Furthermore, the self-deforming filler 5 further includes:

[0056] Anti-skid convex points 505 are provided in plurality and are integrally formed on the inner side wall of the connection hole 502. The plurality of anti-skid convex points 505 are evenly staggered along the inner side wall of the connection hole 502. As can be seen from the above connection relationship, the connection hole 502 is connected to the inner side wall of the connection hole 502. Figure 2 and attached Figure 4 When the deformable expansion material filled in the deformable sealing piece 501 expands, the inner wall of the connecting hole 502 is affected by the expansion and presses against the side of the force arm 3. The anti-slip protrusions 505 further improve the connection stability between the force arm 3 and the self-deformable filler 5, ensuring that the self-deformable filler 5 will not be displaced along the force arm 3 during the correction process, further improving the stability of the self-deformable filler 5 during use, and achieving better use effect.

[0057] Furthermore, it also includes:

[0058] Connecting pipe 4, connecting pipe 4 is a sleeve, connecting pipe 4 is provided with a plurality of, multiple connecting pipes 4 are used for sleeve connection connecting arm 1 and tension adjustment arm 2 and tension adjustment arm 2 and force arm 3, from the above connection relationship, it can be seen that, combined with the attached Figure 1 The tension adjustment arm 2 is detachably connected, and the entire nickel-titanium memory alloy arch expansion device can have different correction forces by replacing the tension adjustment arm 2 with different deformation degrees, thereby further improving the flexibility and applicability of the nickel-titanium memory alloy arch expansion device and achieving different correction effects for different patients.

[0059] The flexible fixing ring 6 is rotatably connected to the connecting tube 4 connecting the tension adjustment arm 2 and the force-applying arm 3 by rotating the fixing shaft 601, and is located on the outside of the connecting tube 4 away from the connecting arm 1;

[0060] Among them, the flexible fixing ring 6 is a retractable elastic ring. As can be seen from the above connection relationship, combined with the attached Figure 1 By sleeve-mounting the flexible fixing ring 6 on the patient's teeth, a more stable installation effect is achieved. Compared with a unilateral abutment installation, the flexible fixing ring 6 can provide a multi-directional elastic support effect, thereby preventing the nickel-titanium shape memory alloy arch expansion device from shaking in the patient's mouth, and achieving a better actual wearing effect.

[0061] The stabilizing limb 7 is detachably connected to the connecting arm 1. The stabilizing limb 7 is located inside the curved portion of the middle portion of the connecting arm 1. The stabilizing limb 7 is an arc-shaped piece that fits the connecting arm 1. As can be seen from the above connection relationship, the stabilizing limb 7 is connected to the connecting arm 1 in a detachable manner. Figure 1 The use of the stabilizing limb 7 makes it easier for medical personnel to hold the nickel-titanium memory alloy bow expander for installation. Compared with the filamentous connecting arm 1 with a circular cross-section, the stabilizing limb 7 is more suitable for handheld installation, thereby avoiding the nickel-titanium memory alloy bow expander from self-rotating during the installation process, making it easier to wear. The detachable setting makes it easier to remove the stabilizing limb 7 after installation and replace the stabilizing limb 7 for use.

[0062] Furthermore, a limit head 301 is formed at the end of the force-adding arm 3 away from one end of the tension-adjusting arm 2. The diameter of the limit head 301 is larger than the diameter of the force-adding arm 3, and the limit head 301 is spherical. Figure 1 and attached Figure 2 The limit head 301 is located at the end of the force arm 3. On the one hand, it can limit the movement of the self-deformed filler 5 after installation. Since the inner diameter of the connecting hole 502 of the self-deformed filler 5 is the same as the diameter of the force arm 3, the self-deformed filler 5 is difficult to fall off from the end of the force arm 3 when there is no external force to interfere with the deformation, thereby preventing it from falling off. On the other hand, it can prevent the end of the force arm 3 from forming edges, thereby preventing the end of the force arm 3 from causing damage to the patient's oral cavity, and ensuring the safety of the patient's oral cavity after installation.

[0063] Specifically, the working principle is as follows: before wearing, first assemble the two tension adjustment arms 2 and the two force-adding arms 3 on both sides of the connecting arm 1 in sequence through the connecting tube 4, and install the flexible fixing ring 6 on the connecting tube 4 connecting the tension adjustment arm 2 and the force-adding arm 3 by rotating the clamping shaft 601, and according to the patient's tooth distribution, a suitable number of self-deformation fillers 5 are sleeved on the force-adding arm 3 through the connecting hole 502 to complete the assembly of the entire device; when wearing, the medical staff wears it by hand through the stabilizing arch piece 7 temporarily clamped on the connecting arm 1, and the nickel-titanium memory alloy arch expansion device is The device is worn in the patient's oral cavity, and the positions of the multiple self-deformable fillers 5 are adjusted so that the multiple self-deformable fillers 5 correspond to different tooth gaps. When the temperature rises or when saliva is absorbed, the self-deformable fillers 5 can expand and deform to a predetermined size, thereby perfectly fitting the gaps between the teeth and the gums, as well as the gaps between the force-adding arm 3, thereby eliminating the gaps between the force-adding arm 3 and the teeth or gums, avoiding foreign body obstruction when using the nickel-titanium memory alloy arch expansion device for correction, thereby avoiding the possibility of foreign body obstruction leading to gingival lesions in patients, and making it safer to use.

[0064] At the same time, the position of the self-deformable filler 5 can be adjusted to adapt to the gum conditions of different patients, and the deformable characteristics of the self-deformable filler 5 itself can also fit well with the different gap shapes of each periodontium, bringing better use effect. Secondly, the same device can be used to provide effective and good treatment effects for different patients, reducing treatment costs.

Claims

1. A nickel-titanium shape memory alloy arch expansion device, characterized in that: include: A connecting arm (1), wherein the connecting arm (1) is n-shaped; Tension adjustment arms (2), two of which are in a small W shape, are respectively mounted at both ends of the connecting arm (1) and are symmetrically arranged about the middle of the connecting arm (1); A force-adding arm (3), wherein the force-adding arm (3) is arc-shaped and two force-adding arms (3) are provided, and the two force-adding arms (3) are respectively detachably connected to one end of the two tension-adjusting arms (2) away from the connecting arm (1); A self-deforming caulking piece (5), wherein a plurality of the self-deforming caulking pieces (5) are provided and respectively mounted on the two force-adding arms (3); The self-deformable filling piece (5) is filled with a deformable expansion material, which expands when physical conditions change and causes the self-deformable filling piece (5) to deform and fill the gaps between teeth and between gums and the force-adding arm (3).

2. The nickel-titanium shape memory alloy arch expansion device according to claim 1, characterized in that: The self-deforming sealing member (5) comprises: A deformable sealing piece (501), wherein the deformable sealing piece (501) is a block-shaped body with a slightly arc-shaped cross section; A connecting hole (502), the connecting hole (502) is opened between the two ends of the deformable sealing piece (501), and the self-deforming sealing piece (5) is movably sleeved on the force-applying arm (3) through the connecting hole (502); A deformable tip (503), the deformable tip (503) being formed on the side of the deformable sealing piece (501) that is in close contact with the teeth, the deformable tip (503) being a V-shaped reverse curved surface having a curvature direction opposite to that of the cross section of the deformable sealing piece (501), and a protruding flexible tip being formed in the middle of the deformable tip (503); Wherein, a cavity for filling a deformable expansion substance is provided in the deformable sealing piece (501).

3. The nickel-titanium shape memory alloy arch expansion device according to claim 2, characterized in that: The self-deforming sealing member (5) further comprises: Anti-slip grooves (504), wherein the anti-slip grooves (504) are provided in plurality and are respectively located on two arc-shaped side walls of the deformed tip (503), and the plurality of anti-slip grooves (504) on the arc-shaped side wall of a single deformed tip (503) are symmetrically arranged along the middle of the deformed sealing piece (501); The anti-slip groove (504) is also arc-shaped and has the same curvature direction as the side wall of the deformable sealing piece (501).

4. The nickel-titanium shape memory alloy arch expansion device according to claim 3, characterized in that: The self-deforming sealing member (5) further comprises: Anti-skid protrusions (505), wherein a plurality of the anti-skid protrusions (505) are provided and integrally formed on the inner side wall of the connection hole (502), and the plurality of the anti-skid protrusions (505) are evenly and staggeredly distributed along the inner side wall of the connection hole (502).

5. The nickel-titanium shape memory alloy arch expansion device according to claim 1, characterized in that: Also includes: A connecting pipe (4), the connecting pipe (4) being a sleeve, and a plurality of the connecting pipes (4) are provided, and the plurality of connecting pipes (4) are respectively used to sleeve and connect the connecting arm (1) and the tension adjustment arm (2) and the tension adjustment arm (2) and the force-applying arm (3); A flexible fixing ring (6), the flexible fixing ring (6) is rotatably engaged with a connecting tube (4) connecting the tension regulating arm (2) and the force applying arm (3) by rotating a clamping shaft (601), and is located on the outside of the connecting tube (4) away from the connecting arm (1); Wherein, the flexible fixing ring (6) is a retractable and deformable elastic ring; A stabilizing limb (7) is detachably connected to the connecting arm (1), and the stabilizing limb (7) is located inside the curved portion in the middle of the connecting arm (1). The stabilizing limb (7) is an arc-shaped limb that fits the connecting arm (1).

6. The nickel-titanium shape memory alloy arch expansion device according to claim 4, characterized in that: A limiting head (301) is formed at the end of the force-adding arm (3) away from one end of the tension-adjusting arm (2); the diameter of the limiting head (301) is larger than the diameter of the force-adding arm (3), and the limiting head (301) is spherical.

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