Anchorage nail traction device

Abstract

The utility model discloses an anchorage nail traction device, and relates to the technical field of medical instruments. The anchorage nail traction device comprises a nail body, a rope body and a traction hook; the nail body is used for being implanted into an alveolar bone; the middle part of the rope body is lapped on the side wall of the tail end of the nail body, and two sections, crossing the side wall of the nail body, of the rope body are mutually wound to form a spiral part for binding the rope body on the nail body; the tail of the traction hook is fixedly connected with the two ends of the rope body at the same time. The traction hook is used for hooking a traction piece. According to the anchorage nail traction device, the spiral part is formed through the rope body, the rope body can be rapidly connected with the nail body conveniently, the traction hook is arranged on the rope body and connected with the traction piece, rapid connection and separation of the nail body and the traction piece are achieved, the phenomenon that the rope body is connected with a binding head is reduced, and the anchorage nail traction device is simple in structure and convenient to use. And adhesion with the internal mucosa of the mouth of the patient is avoided, smooth proceeding of subsequent treatment work is ensured, and the treatment pain of the patient is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anchorage nail traction device. Background Technology

[0002] Orthodontic screws, also known as bone screws, are temporary mini-implants implanted into the alveolar bone. Due to their superior function and simple implantation, they have become an increasingly popular auxiliary tool in orthodontic treatment in recent years. The function of orthodontic screws is to provide a fixed source of force to help move teeth. They are highly effective in correcting protruding teeth, gummy smiles, deep overbite, excessively elongated molars, and cases requiring tooth retraction, achieving results that are difficult to obtain with traditional orthodontics, while also accelerating tooth movement.

[0003] In orthodontic treatment, anchorage screws, as an important tool for strengthening anchorage, play a crucial role in better controlling tooth movement in three-dimensional space. However, after being implanted into the alveolar bone in the oral cavity, anchorage screws are prone to embedding with the surrounding mucosa, which poses significant challenges and difficulties for clinical force application and elastic band traction.

[0004] Specifically, anchorage screws can be implanted in various locations, but the most common are the mandibular external oblique line and the maxillary zygomatic alveolar ridge. Due to the unique anatomical structure of these areas, anchorage screws tend to integrate tightly with the mucosa after implantation, forming an embedding. To address this, clinically, a ligature wire loop is typically attached to the anchorage screw, and then an elastic chain is secured to the ligature wire using a needle-threading technique. However, this procedure is quite cumbersome, increasing the workload for doctors and reducing the patient's treatment experience. Occasionally, the needle-threading process can also cause scratches to the corner of the patient's mouth, resulting in unnecessary pain.

[0005] Furthermore, the ligature head of the ligature wire is prone to adhesion after prolonged contact with the mucosa. This not only affects the normal use of the anchorage screw but also increases the difficulty of removing the anchorage screw in the future, causing inconvenience to both doctors and patients. Utility Model Content

[0006] In view of this, the purpose of this utility model is to overcome the shortcomings in related technologies, and this utility model provides a bracing nail traction device.

[0007] This utility model provides the following technical solution:

[0008] A bracing nail traction device includes a nail body, a rope, and a traction hook.

[0009] The nail is used for implantation into the alveolar bone; the rope is specifically a ligature wire capable of plastic deformation, with the middle part of the rope resting on the side wall of the tail end of the nail, and the two ends of the rope passing over the side wall of the nail intertwined to form a spiral section, used to bind the rope to the nail; the tail end of the traction hook is simultaneously fixedly connected to both ends of the rope with a smooth transition, and the traction hook is used to hook with a traction component, which can specifically be an elastic chain, elastic wire, rubber band, nickel-titanium tension spring, metal wire, etc., to provide traction to the nail.

[0010] As a further improvement to the above technical solution, the rope can be selected in different lengths as needed.

[0011] As a further improvement to the above technical solution, the hook of the traction hook is provided with a blocking member; when the traction member falls into the hook, the blocking member can block the opening of the hook and reduce its size.

[0012] As a further improvement to the above technical solution, the blocking member is provided on the inner side of the hook by a hinged connection. The blocking member has a pressing section and a blocking section. The pressing section and the blocking section are perpendicular to each other. The pressing section is located near the bottom of the hook, and the blocking section is located near the inner sidewall of the hook. When the traction member falls into the hook, it can press the pressing section, so that the pressing section abuts against the bottom sidewall of the hook through an interference fit, thereby driving the blocking section to block the opening of the hook.

[0013] As a further improvement to the above technical solution, the hook on the traction hook is provided with at least two hooks.

[0014] As a further improvement to the above technical solution, the nail body has an annular groove on its side wall that corresponds to the rope body, and the rope body is laid in the annular groove.

[0015] As a further improvement to the above technical solution, the cross-sectional diameter of the rope is smaller than the depth of the annular groove.

[0016] As a further improvement to the above technical solution, a protective sleeve is provided on the spiral part of the rope.

[0017] As a further improvement to the above technical solution, the inner wall of the protective sleeve is wavy, corresponding to the outer shape of the spiral part.

[0018] As a further improvement to the above technical solution, the length of the protective sleeve is not less than the length of the spiral portion.

[0019] As a further improvement to the above technical solution, the inner diameter of the protective sleeve is not less than the maximum cross-sectional diameter of the spiral portion.

[0020] Compared with related technologies, the beneficial effects of this utility model are:

[0021] The anchorage screw traction device provided by this utility model allows for the installation of anchorage screws in patients who require enhanced anchorage to assist in orthodontic treatment. The dentist first implants the anchorage screw into the patient's alveolar bone, then drapes a rope over the screw. Specifically, the rope is tied to the screw by placing the middle section of the rope on the side wall of the screw's tail end, and then wrapping the two ends of the rope around each other to form a spiral section, thus securing the rope to the screw. This simple and effective binding method creates a stable connection between the rope and the screw. This process is quick and easy to master, significantly reducing surgical preparation time.

[0022] Next, the doctor will use the pre-installed traction hooks on the rope to connect it to the external traction device. This design simplifies the connection process of the traction device, eliminating the need for complicated binding techniques and requiring only a simple hooking action, greatly improving the convenience and efficiency of clinical operations.

[0023] Once the traction device and hook are successfully connected, the dentist can adjust the tension of the traction device to apply appropriate pulling force to the hook. This force is then transmitted through the rope to the anchorage screw, ultimately acting on the tooth requiring correction to achieve traction, straightening, and reinforcement. This process not only effectively promotes tooth movement but also significantly enhances the anchorage effect, increasing the success rate of orthodontic treatment.

[0024] After treatment, when traction needs to be removed, the doctor simply needs to unscrew the rope and loosen the traction device, allowing it to naturally disengage from the nail and traction hook, thus completing the removal. The entire process is easy and simple, requiring no additional tools or complicated operations, greatly enhancing the patient's treatment experience.

[0025] In contrast, while traditional anchorage screw traction methods also use ligatures on the screw body for traction, they present several inconveniences in practice. First, connecting the traction device to the ligature wire requires threading a needle, a tedious and time-consuming process that demands a high level of skill from the physician; otherwise, it can easily lead to an insecure connection or operational errors. Second, prolonged retention of the ligature wire in the oral cavity can cause adhesions to the oral mucosa, increasing patient discomfort and potentially making future screw removal difficult, even leading to unnecessary complications.

[0026] Furthermore, compared to other recent designs of anchorage nail traction devices, the use of insert-type and clamp-wall-type anchorage nail connections results in excessive foreign body sensation around the anchorage nail, cumbersome clinical procedures, and the appropriateness of the anchorage nail implantation position will seriously affect the correctness of its traction direction. A design with excessively short traction hooks and a lack of rope will fail to meet the clinical need to avoid embedding in hyperplastic mucosa.

[0027] The orthodontic screw traction device provided by this utility model effectively avoids the above-mentioned problems through the direct connection design between the rope and the traction hook. The two ends of the rope are smoothly and tightly connected to the traction hook, which will not cause adhesion to the patient's oral mucosa and minimize foreign body sensation. The selectable rope length can effectively avoid embedding and covering gingival mucosa of various thicknesses, and compensate for the defects of poor orthodontic screw implantation position. By setting the traction hook on the rope, the traction component can be directly and quickly hooked and cooperate with the traction hook, ensuring a rapid connection between the traction component and the rope without the need for a complicated binding process, thereby greatly improving the safety of treatment and patient comfort.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the support nail traction device from one perspective in one embodiment of the present invention;

[0031] Figure 2 This shows a schematic diagram of the structure of the rope in a slack state in one embodiment of the present invention;

[0032] Figure 3 This diagram shows a partial view of the structure of the anchor nail traction device in one embodiment of the present invention.

[0033] Explanation of key component symbols:

[0034] 100-Nail body; 110-Limiting platform; 120-Annular groove; 200-Rope body; 210-Spiral part; 300-Traction hook; 310-Hook; 320-Barrier component; 321-Pressing section; 322-Barrier section; 400-Protective sleeve. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] like Figure 1 As shown, an embodiment of this utility model provides a support nail traction device, including a nail body 100, a rope body 200, and a traction hook 300.

[0041] The nail body 100 is used for implantation into the alveolar bone; the rope body 200 is specifically a ligature wire capable of plastic deformation; such as Figure 2 The middle part of the rope 200 shown is attached to the side wall of the tail end of the nail body 100. The two sections of the rope 200 that pass over the side wall of the nail body 100 are intertwined to form a spiral part 210, which is used to bind the rope 200 to the nail body 100. Specifically, the rope 200 can be selected in different lengths according to the different depths of the patient's mouth, so as to be suitable for different patients' intraoral conditions and meet the needs of patients with different mucosal thickness hyperplasia. The tail of the traction hook 300 is fixedly connected to both ends of the rope 200. The traction hook 300 is used to hook with the traction component, which can be an elastic chain, elastic wire, rubber band, nickel-titanium tension spring, metal wire, etc., to provide traction to the nail body 100.

[0042] The anchorage screw traction device provided in this embodiment, in scenarios where it is necessary to provide enhanced anchorage to assist in orthodontic treatment, involves the dentist first implanting the anchorage screw into the patient's alveolar bone, and then placing the rope 200 on the screw body 100. Specifically, the rope 200 and the screw body 100 are bound together by the dentist passing the middle of the rope 200 over the top of the screw body 100, and then crossing and wrapping the rope 200 around the two ends of the side wall of the screw body 100. Through this simple and effective binding method, a stable connection is formed between the rope 200 and the screw body 100. This process is quick and easy to master, greatly shortening the surgical preparation time.

[0043] Next, the doctor will use the traction hooks 300 pre-installed on the rope 200 to connect it to the external traction device. This design simplifies the connection process of the traction device, eliminating the need for complicated binding techniques and requiring only a simple hooking action, greatly improving the convenience and efficiency of clinical operations.

[0044] Once the traction element is successfully connected to the traction hook 300, the dentist can adjust the tension of the traction element to apply appropriate pulling force to the traction hook 300. This force is then transmitted through the rope 200 to the anchorage screw, ultimately acting on the teeth requiring correction to achieve traction correction and reinforcement. This process not only effectively promotes tooth movement but also significantly enhances the anchorage effect, increasing the success rate of orthodontic treatment.

[0045] After treatment, when traction needs to be released, the doctor simply needs to unscrew the spiral part 210 of the rope 200 and loosen the traction component, allowing it to naturally disengage from the nail body 100 and traction hook 300, thus completing the removal. The entire process is easy and simple, requiring no additional tools or complicated operations, greatly enhancing the patient's treatment experience.

[0046] In contrast, while traditional anchorage screw traction methods also utilize ligature wires on the screw body 100 for traction, they present numerous inconveniences in practice. Firstly, connecting the traction element to the ligature wire requires threading a needle, a process that is not only tedious and time-consuming but also demands a high level of skill from the physician; otherwise, it can easily lead to an insecure connection or operational errors. Secondly, prolonged retention of the ligature wire tip in the oral cavity can cause adhesions to the oral mucosa, increasing patient discomfort and potentially making future removal of the anchorage screw difficult, even leading to unnecessary complications.

[0047] Furthermore, compared to other recent designs of anchorage nail traction devices, the use of insert-type and clamp-wall-type anchorage nail connection methods results in excessive foreign body sensation around the anchorage nail, cumbersome clinical operation, and the appropriateness of the anchorage nail implantation position will seriously affect the correctness of its traction direction. The design of an excessively short traction hook 300 and the lack of a rope 200 will not meet the clinical need to avoid embedding in hyperplastic mucosa.

[0048] The orthodontic screw traction device provided in this embodiment effectively avoids the aforementioned problems through the direct connection design between the rope 200 and the traction hook 300. The two ends of the rope 200 are smoothly and tightly connected to the traction hook 300, preventing adhesion to the patient's oral mucosa and minimizing foreign body sensation. The selectable length of the rope 200 effectively avoids embedding and covering of gingival mucosa of varying thicknesses, compensating for defects in poor orthodontic screw placement. Furthermore, by setting the traction hook 300 on the rope 200, the traction component can directly and quickly engage with the traction hook 300, ensuring rapid connection between the traction component and the rope 200 without a complex binding process, thereby greatly improving treatment safety and patient comfort.

[0049] In some specific embodiments, the hook 310 of the traction hook 300 is provided with a blocking member 320; when the traction member falls into the hook 310, the blocking member 320 can block and reduce the opening of the hook 310, so as to reduce the probability of the traction member disengaging from the hook 310 when the traction member is engaged with the hook 310, and ensure the reliability of this embodiment.

[0050] like Figure 3As shown, in some specific embodiments, the blocking member 320 is hinged and disposed on the inner side of the hook 310. The blocking member 320 has a pressing section 321 and a blocking section 322. The pressing section 321 and the blocking section 322 are perpendicular to each other. The pressing section 321 is located near the bottom of the hook 310, and the blocking section 322 is located near the inner wall of the hook 310. When the traction member falls into the hook 310, it can press the pressing section 321, so that the pressing section 321 abuts against the bottom side wall of the hook 310 through an interference fit, thereby driving the blocking section 322 to block the opening of the hook 310. In actual operation, when the traction member falls into the hook 310, it will first contact the pressing section 321. The traction force of the traction component causes a slight deformation in the pressing section 321, which then fits tightly against the hook bottom sidewall of the hook 310 through an interference fit. This action not only stabilizes the position of the pressing section 321, but more importantly, as an application of the lever principle, it drives the blocking section 322 to move, effectively blocking the opening of the hook 310 and making the overall opening of the hook 310 smaller. In this way, the connection between the traction component and the hook 310 is tighter, significantly reducing the probability of the traction component disengaging from the hook 310, and further improving the reliability and safety of the entire device.

[0051] In some specific embodiments, at least two hooks 310 are provided on the traction hook 300; this design consideration is mainly based on the diverse needs that may arise in actual use scenarios. Specifically, the setting of multiple hooks 310 is particularly important when facing situations where traction force needs to be applied to the nail body 100 from multiple directions simultaneously. By setting traction elements on these hooks 310 respectively, the operation of traction on the nail body 100 in multiple directions can be conveniently and effectively realized, thereby ensuring that the nail body 100 can be stably pulled in the expected direction and force, meeting the usage requirements in various complex situations; in addition, the double-hook or even multi-hook design of the traction hook 300 can apply force to the upper and lower jaws simultaneously, reducing the number of anchorage nails used, thereby reducing the patient's economic losses and discomfort.

[0052] In some specific embodiments, the tail end of the nail body 100 is provided with a limiting platform 110 to prevent the rope body 200 from slipping off the nail body 100 during use, thereby ensuring the reliability of the fit between the rope body 200 and the nail body 100.

[0053] In some specific embodiments, the side wall of the nail body 100 is provided with an annular groove 120 corresponding to the rope body 200, and the rope body 200 is placed in the annular groove 120 to further limit the position of the rope body 200 looping on the nail body 100, and ensure the stability of the fit between the rope body 200 and the nail body 100.

[0054] In some specific embodiments, the cross-sectional diameter of the rope 200 is smaller than the depth of the annular groove 120, so that the portion of the rope 200 that loops around the nail 100 can be completely submerged in the annular groove 120, ensuring the ease of use of this embodiment.

[0055] In some specific embodiments, the spiral portion 210 of the rope 200 is covered with a protective sleeve 400 to separate the spiral portion 210 from the inside of the patient's mouth, so as to prevent the two ends of the rope 200 from moving relative to each other during use and causing damage to the patient's oral tissues, thereby improving the safety of use in this embodiment.

[0056] In some specific embodiments, the inner wall of the protective sleeve 400 is wavy, corresponding to the outer shape of the spiral part 210, in order to improve the fit between the protective sleeve 400 and the spiral part 210, reduce the probability of the protective sleeve 400 sliding relative to the spiral part 210, and ensure the reliability of the protective sleeve 400.

[0057] In some specific embodiments, the length of the protective sleeve 400 is not less than the length of the spiral portion 210, so as to ensure complete coverage of the spiral portion 210 and ensure the protective effect of the protective sleeve 400.

[0058] In some specific embodiments, the inner diameter of the protective sleeve 400 is not less than the maximum cross-sectional diameter of the spiral portion 210, so as to avoid the protective sleeve 400 affecting the smoothness of the two ends of the rope 200 when they are spirally wound, and to ensure the reliability of this embodiment.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A bracing nail traction device, characterized in that, include: The nail body (100) is used for implantation into the alveolar bone; A rope (200) is placed on the side wall of the tail end of the nail body (100) at its middle part. The two ends of the rope (200) that pass over the side wall of the nail body (100) are intertwined to form a spiral part (210) for binding the rope (200) to the nail body (100). A traction hook (300) is provided, the tail of which is fixedly connected to both ends of the rope (200). The traction hook (300) is used to hook with a traction component.

2. The anchorage nail traction device according to claim 1, characterized in that, The hook (310) of the traction hook (300) is provided with a blocking member (320); when the traction member falls into the hook (310), the blocking member (320) can block the opening of the hook (310) and reduce it.

3. The anchorage nail traction device according to claim 2, characterized in that, The blocking member (320) is hinged to the inside of the hook (310). The blocking member (320) has a pressing section (321) and a blocking section (322). The pressing section (321) and the blocking section (322) are perpendicular to each other. The pressing section (321) is located near the bottom of the hook (310), and the blocking section (322) is located near the inner wall of the hook (310). When the traction member falls into the hook (310), it can press the pressing section (321) so that the pressing section (321) abuts against the bottom side wall of the hook (310) through an interference fit, thereby driving the blocking section (322) to block the opening of the hook (310).

4. The anchorage nail traction device according to claim 2, characterized in that, At least two hooks (310) are provided on the towing hook (300).

5. The anchorage nail traction device according to claim 1, characterized in that, The nail body (100) has an annular groove (120) on its side wall that corresponds to the rope body (200), and the rope body (200) is laid in the annular groove (120).

6. The anchoring nail traction device according to claim 5, characterized in that, The cross-sectional diameter of the rope (200) is smaller than the depth of the annular groove (120).

7. The anchorage nail traction device according to claim 1, characterized in that, The spiral portion (210) of the rope (200) is covered with a protective sleeve (400).

8. The anchorage nail traction device according to claim 7, characterized in that, The inner wall of the protective sleeve (400) is wavy, corresponding to the outer shape of the spiral part (210).

9. The anchoring nail traction device according to claim 7, characterized in that, The length of the protective sleeve (400) is not less than the length of the spiral part (210).

10. The anchorage nail traction device according to claim 7, characterized in that, The inner diameter of the protective sleeve (400) is not less than the maximum cross-sectional diameter of the spiral part (210).

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