Dental ultrasonic osteotome

Abstract

The invention discloses a dental ultrasonic osteotome, relates to the technical field of ultrasonic osteotomes, and aims to solve the technical problems that an existing ultrasonic osteotome is not matched with low-position impacted teeth and gaps of embedded impacted teeth are increased. The working tip comprises a working tip body, the working tip body comprises a rod part connected with a handle, a neck part and a head part are sequentially arranged at the end, away from the handle, of the rod part, the head part is of a bent arc-shaped structure, the included angle between the axis of the head part and the axis of the neck part is 60-100 degrees, and a blade face is arranged on the head part. The head adopts the bent arc-shaped structure, and the head and the neck are vertically or obliquely arranged, so that on one hand, the head can bypass the top surfaces and the side surfaces of the teeth (similar to covering the teeth) through the bent arc-shaped structure, contact with the alveolar bone of the teeth and increase the gap of the alveolar bone part, and the difficulty of increasing the gap of the alveolar bone is reduced; and on the other hand, as the head part adopts the bent arc-shaped structure, when the covering and buckling teeth are in contact with the alveolar bone of the teeth, the shape of the tooth root can be fit to increase the gap of the alveolar bone, and the gap increasing effect is better.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic bone scalpel technology, and specifically relates to a dental ultrasonic bone scalpel. Background Technology

[0002] In the clinical practice of oral and maxillofacial surgery, impacted tooth extraction is one of the most common surgical procedures. Impacted teeth, due to abnormal eruption position or being blocked by adjacent teeth or alveolar bone, cannot erupt normally to the occlusal plane. This can easily lead to complications such as pericoronitis, caries of adjacent teeth, and root resorption, and may also cause serious problems such as jaw cysts and nerve damage. Therefore, they usually need to be extracted surgically.

[0003] During impacted tooth extraction, the narrow space between the impacted tooth and the surrounding alveolar bone, sometimes even with bone adhesion, makes direct extraction prone to complications such as alveolar bone fracture, damage to adjacent teeth, and soft tissue tears. This significantly increases surgical trauma and patient discomfort. Therefore, preoperative or intraoperative preparation of the alveolar bone around the impacted tooth to create sufficient space is crucial for ensuring a smooth procedure and reducing the incidence of complications.

[0004] Currently, commonly used dental gap-filling tools in clinical practice mainly include high-speed handpieces with fissure drills, bone chisels, and traditional ultrasonic bone scalpels. Among them, high-speed handpieces with fissure drills achieve gap filling by mechanically cutting bone tissue, but this tool has a high rotation speed and strong cutting force, which poses a high risk of damage to surrounding soft tissues and adjacent teeth. In addition, the high temperature generated during the operation can easily lead to bone tissue necrosis, affecting postoperative healing. Bone chisels achieve gap filling by knocking or prying bone tissue separation. The operation depends on the doctor's experience, and it is difficult to precisely control the force, which can easily cause large-scale alveolar bone fractures. Furthermore, it is difficult to handle bone tissue in deep or hidden locations.

[0005] Ultrasonic bone scalpels, as a novel tool for bone tissue processing, offer advantages such as minimal soft tissue damage, high cutting precision, and low intraoperative temperature due to their ultrasonic vibration cutting principle, and are increasingly being used in dental gap-filling procedures. However, existing ultrasonic bone scalpels often employ straight-bar or simple curved-angle designs, making it difficult to adapt to the complex anatomical space surrounding impacted teeth (especially low-lying impacted and subcutaneously impacted teeth). In practice, existing scalpel heads often cannot easily reach the alveolar bone in concealed areas such as the distal and lingual sides of impacted teeth. Furthermore, the root of an impacted tooth typically forms an arc-shaped structure with the crown, which existing ultrasonic bone scalpels struggle to conform to, leading to insufficient gap filling in these areas. This increases surgical difficulty, prolongs surgical time, and may even cause complications such as damage to adjacent teeth or nerve stimulation due to forced manipulation.

[0006] Therefore, in order to address the problem that existing dental gap-filling tools (especially ultrasonic bone scalpels) have difficulty reaching the alveolar bone in hidden areas when treating impacted teeth, it is urgent to develop an ultrasonic bone scalpel with a more adaptable shape that can easily reach the target gap-filling areas around impacted teeth. Summary of the Invention

[0007] This invention discloses a dental ultrasonic bone scalpel, which aims to solve the technical problem that existing ultrasonic bone scalpels are not suitable for low-lying impacted teeth and the increased gaps in impacted teeth.

[0008] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0009] A dental ultrasonic bone scalpel includes a working tip, which includes a rod connected to a handle. The end of the rod away from the handle is provided with a neck and a head in sequence. The head has a curved arc structure, and the angle between the head and the axis of the neck is 60-100°. The head is provided with a cutting surface.

[0010] With this technical solution, the head adopts a curved arc structure, and the head is set perpendicular to or tilted to the neck. This setting can, on the one hand, bypass the top and sides of the teeth (similar to covering the teeth) through the curved arc structure, and contact the alveolar bone of the teeth to increase the gap in the alveolar bone, reducing the difficulty of increasing the gap in the alveolar bone; on the other hand, because the head adopts a curved arc structure, when it covers the teeth and contacts the alveolar bone, it can conform to the shape of the tooth root to increase the gap in the alveolar bone, resulting in a better gap-increasing effect.

[0011] Preferably, the arc-shaped structure of the head is a hook structure, the width of the hook structure is 8-12mm, the height of the hook structure is 20-30mm, and the cutting edge is located at the end of the hook structure away from the neck.

[0012] By adopting this technical solution, the width and height of the head hook structure are set to match the width and height of a typical molar. This makes it easier for doctors to contact the alveolar bone from the side of the tooth through the cover buckle, thus reducing the difficulty of alveolar bone gap filling. At the same time, it is easier to perform alveolar bone gap filling in a state that fits the tooth, which can reduce damage to the alveolar bone and improve the recovery effect of the alveolar bone after tooth extraction.

[0013] Preferably, the included angle corresponding to the arc-shaped structure is 140-150 degrees.

[0014] After adopting this technical solution, the included angle corresponding to the arc structure is limited to between 140-150 degrees, which is roughly consistent with the angle of the top of a typical molar and its two sides (viewed from the side). This allows it to fit the tooth surface better, conform to the curvature between the tooth floor and the alveolar bone, and perform gap-filling operations on the alveolar bone. This improves the precision of the alveolar bone gap-filling operation, reduces damage to the alveolar bone, and helps to improve the subsequent recovery effect of the alveolar bone.

[0015] Preferably, the width of the head is 1-2 mm and the thickness is 0.5-1 mm.

[0016] After adopting this technical solution, the width of the head is set to 1-2mm and the thickness to 0.5-1mm. On the one hand, it can improve the efficiency of alveolar bone cutting by widening the head while ensuring the accuracy of alveolar bone cutting; on the other hand, it can reduce damage to the alveolar bone by ensuring that the head is thin, which is conducive to improving the subsequent recovery effect.

[0017] Preferably, the diameter of the neck gradually decreases from the end connected to the handle to the end connected to the head, and the diameter of the neck ranges from 1.0 to 1.8 mm.

[0018] By adopting this technical solution, the diameter of the neck can be set between 1.0 and 1.8 mm, which can better transmit ultrasonic vibration, reduce energy loss, and improve cutting efficiency.

[0019] Preferably, the head is positioned perpendicular to the neck.

[0020] By adopting this technical solution, the head is positioned vertically relative to the neck. This positioning method makes it easier to contact the bottom of the tooth and the alveolar bone from the top and side walls of the tooth, which can improve the cutting accuracy.

[0021] Preferably, the head includes several connecting segments, and two adjacent connecting segments are connected by a first connecting part. The first connecting part includes a connecting rod and a connecting hole respectively disposed on one side of two adjacent connecting segments, and the connecting rod and the connecting hole are connected by threads.

[0022] By adopting this technical solution, the head is designed to be detachable. This allows dentists to plan the cutting path after photographing the patient's teeth, and then connect specific connecting segments to form a specific hook structure. This structure can be adapted to the shape and structure of different impacted teeth, conforming to the alveolar bone and creating gaps, thus improving the practicality of the device. Furthermore, the threaded connection between the connecting rod and the connecting hole increases the stability of the connection between the connecting segments, thereby enhancing the stability of the device during use.

[0023] Preferably, the connecting segment includes a first segment connected to the neck, the first segment being straight or arc-shaped, a second segment connected to the first segment being U-shaped or V-shaped, and a third segment with a cutting edge connected to the second segment, the third segment being straight or arc-shaped.

[0024] After adopting this technical solution, the first, second, and third segments connected in sequence can be selected according to the patient's photograph and the incision path for the formation of the impacted tooth, forming a special hook structure. This structure can be combined with different impacted teeth of different patients to improve the alveolar bone gap-filling effect and reduce the difficulty of gap filling, making the device highly practical.

[0025] Preferably, a protective device is provided on two adjacent connecting sections. The protective device includes an insert plate provided on one of the connecting sections, and an insertion hole provided on the other connecting section to cooperate with the insert plate. A slider is provided on the insert plate, and a sliding groove is provided on the connecting section with the insert plate to cooperate with the slider. The sliding groove has an L-shaped structure.

[0026] By adopting this technical solution, a slider and an L-shaped groove are set up. After the connecting rod and the connecting hole are connected, the insert plate is inserted into the adjacent connecting section by sliding the slider, which increases the stability of the connecting section during use and further improves the stability of the device during use.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] (1) The head of this device adopts a curved arc structure, and the head is set perpendicular to or tilted to the neck. This setting can, on the one hand, bypass the top and side surfaces of the teeth (similar to covering the teeth) through the curved arc structure, and contact the alveolar bone of the teeth to increase the gap in the alveolar bone, thus reducing the difficulty of increasing the gap in the alveolar bone; on the other hand, because the head adopts a curved arc structure, when it covers the teeth and contacts the alveolar bone of the teeth, it can conform to the shape of the tooth root to increase the gap in the alveolar bone, resulting in a better gap-increasing effect.

[0029] (2) The width and height of the head hook structure are set to match the width and height of a normal molar, which makes it easier for doctors to contact the alveolar bone from the side of the tooth through the cover buckle and perform the alveolar bone gap-filling operation, reducing the difficulty of alveolar bone gap-filling operation. At the same time, it is easy to perform alveolar bone gap-filling operation in a state of close contact with the tooth, which can reduce damage to the alveolar bone and improve the alveolar bone recovery effect after tooth extraction.

[0030] (3) The width of the head is set to 1-2 mm and the thickness to 0.5-1 mm. On the one hand, the alveolar bone cutting accuracy can be guaranteed, and the efficiency of alveolar bone cutting can be improved by widening the head. On the other hand, the thickness of the head is relatively thin, which can reduce the damage to the alveolar bone and facilitate the improvement of the recovery effect.

[0031] (4) The first, second and third segments connected in sequence can be selected according to the incision path of the impacted tooth after the patient's photo, forming a special hook structure. This can be combined with different impacted teeth of different patients to improve the alveolar bone gap-filling effect and reduce the difficulty of gap filling, making the device more practical.

[0032] (5) A slider and an L-shaped groove are provided. After the connecting rod and the connecting hole are connected, the insert plate is inserted into the adjacent connecting section by sliding the slider, which increases the stability of the connecting section during use and further improves the stability of the device during use. Attached Figure Description

[0033] The present invention will be described by way of example and with reference to the accompanying drawings, wherein:

[0034] Figure 1 This is a three-dimensional structural diagram of a dental ultrasonic bone scalpel according to the present invention;

[0035] Figure 2 This is a three-dimensional structural schematic diagram of a dental ultrasonic bone scalpel according to the present invention from another perspective;

[0036] Figure 3 This is a left view of a dental ultrasonic bone scalpel according to the present invention;

[0037] Figure 4 This is a schematic diagram of the head structure;

[0038] Figure 5 This is a schematic diagram of the head structure in Example 2;

[0039] Figure 6 A schematic diagram of the connecting rod and connecting hole mechanism;

[0040] Figure 7 This is a schematic diagram of the insert plate and socket.

[0041] Figure Labels

[0042] 1-Handle, 2-Lever, 3-Neck, 4-Head, 401-Connecting section, 4011-First section, 4012-Second section, 4013-Third section, 4014-Connecting hole, 4015-Slide groove, 4016-Slider, 4017-Insertion plate, 4018-Connecting rod, 4019-Insertion hole, 402-Blade surface. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] The following is combined with Figures 1-7 The present invention will be described in detail below.

[0046] Example 1

[0047] A dental ultrasonic bone scalpel, such as Figures 1-4 As shown, it includes a working tip, which includes a rod 2 connected to a handle 1. The end of the rod 2 away from the handle 1 is provided with a neck 3 and a head 4 in sequence. The head 4 adopts a curved arc structure. The included angle between the head 4 and the axis of the neck 3 is 60-100°. The head 4 is provided with a cutting surface 402.

[0048] In this embodiment, the rod 2, neck 3, and head 4 are all made of titanium alloy. Titanium alloy has low density and high strength, which can maintain structural stability under high-frequency vibration. At the same time, it has excellent wear resistance and corrosion resistance, extending the service life of the working tip and reducing material delamination or surface damage. Titanium alloy has low vibration attenuation at ultrasonic frequencies, which can efficiently transfer energy and ensure cutting accuracy at the micron level, making it suitable for fine processing of hard tissues such as bone. Titanium alloy has good biocompatibility with human tissues and is less likely to cause rejection reactions. In dental ultrasonic bone scalpels, it can achieve precise operation of "cutting only bone without damaging soft tissues". The elliptical vibration trajectory of the working tip helps protect tooth enamel and cementum, improving surgical safety.

[0049] In this embodiment, the rod 2 is provided with a second connecting part that connects to the handle 1. The second connecting part includes a first external thread on the rod 2, and the front end of the handle 1 is provided with a first internal thread that mates with the first external thread. The threaded connection between the first external thread and the first internal thread enables the working tip to be detached from the handle 1. After a patient completes surgery, the working tip can be removed, and after disinfecting the handle 1 and other components, a new working tip can be installed, allowing for individual use, preventing infection, and ensuring patient safety.

[0050] In this embodiment, the arc-shaped structure of the head 4 is a hook structure, the width of the hook structure is 8-12mm, the height of the hook structure is 20-30mm, and the cutting edge 402 is disposed at the end of the hook structure away from the neck 3.

[0051] In this embodiment, the preferred width of the hook structure is 10mm and the height is 20mm, which matches the height and width of a typical molar, making it more practical. In other embodiments, the height and width of the hook structure can be further adjusted to match the tooth length and width of the matched teeth, allowing for gap-filling operations on the alveolar bone.

[0052] In this embodiment, the cutting edge 402 is disposed at the bottom of the hook structure away from the neck 3, and the thickness of the cutting edge 402 is 1mm.

[0053] In this embodiment, the included angle corresponding to the arc-shaped structure is 145 degrees.

[0054] In this embodiment, the head 4 has a width of 1-2 mm and a thickness of 0.5-1 mm.

[0055] In this embodiment, the head 4 has a width of 1.5 mm and a thickness of 1 mm. In other embodiments, the width and thickness of the head 4 can be adjusted as needed.

[0056] In this embodiment, the diameter of the neck 3 gradually decreases from the end connected to the handle 1 to the end connected to the head, and the diameter of the neck 3 ranges from 1.5 to 1.8 mm.

[0057] In this embodiment, the axial direction of the neck 3 coincides with the axial direction of the handle 1.

[0058] In this embodiment, the head 4 is positioned perpendicular to the neck 3.

[0059] In this embodiment, the plane where the head 4 is located is parallel to the cross-section of the handle 1, and the plane where the head 4 is located and the cross-section of the handle 1 are vertically connected through the neck 3.

[0060] The specific method of using this invention is as follows:

[0061] Reference Figures 1-4 When using this device, first connect the working tip to the handle 1 via the rod 2. When using it, the hook structure of the head 4 needs to be in contact with the two side walls and the top of the tooth to cover the tooth. Then, the cutting edge 402 is in contact with the bottom of the tooth, conforming to the arc structure of the bottom of the tooth, to cut the alveolar bone. And cut continuously along the side of the tooth in the same direction until the alveolar bone is filled to the appropriate position.

[0062] The head 4 of this device adopts a curved arc structure, and the head 4 is set perpendicular to or at an angle to the neck 3. This setting can, on the one hand, bypass the top and sides of the teeth (similar to covering the teeth) through the curved arc structure, and contact the alveolar bone of the teeth to increase the gap in the alveolar bone, reducing the difficulty of increasing the gap in the alveolar bone; on the other hand, because the head 4 adopts a curved arc structure, when it covers the teeth and contacts the alveolar bone, it can conform to the shape of the tooth root to increase the gap in the alveolar bone, resulting in a better gap-increasing effect.

[0063] Example 2

[0064] This embodiment is basically the same as embodiment 1, except that: in this embodiment, as shown in the example... Figure 5-7 As shown, the head 4 includes several connecting segments 401. Two adjacent connecting segments 401 are connected by a first connecting part. The first connecting part includes a connecting rod 4018 and a connecting hole 4014 respectively disposed on one side of two adjacent connecting segments 401. The connecting rod 4018 and the connecting hole 4014 are connected by threads.

[0065] In this embodiment, the connecting rod 4018 and the connecting section 401 are integrally formed by welding. The outer side wall of the connecting rod 4018 is provided with a second external thread, and the connecting hole 4014 is provided with a second internal thread that mates with the second external thread.

[0066] In this embodiment, the connecting segment 401 includes a first segment 4011 connected to the neck 3. The first segment 4011 is straight or arc-shaped. The first segment 4011 is connected to a second segment 4012 with a U-shaped or V-shaped structure. The second segment 4012 is connected to a third segment 4013 with a cutting edge 402. The third segment 4013 is straight or arc-shaped.

[0067] In this embodiment, the first segment 4011 is connected to the neck 3 in the same way as the connection between the connecting segments 401 and the connecting segments 401, which will not be described in detail here.

[0068] In this embodiment, connecting rods 4018 and connecting holes 4014 are respectively provided at both ends of the first segment 4011 and the second segment 4012. The connecting rod 4018 on the first segment 4011 is connected to the connecting hole 4014 on the second segment 4012, and the third segment 4013 is only provided with connecting holes 4014. This ensures the overall sealing of the connecting segment 401.

[0069] In this embodiment, a protective device is provided on two adjacent connecting segments 401. The protective device includes an insert plate 4017 provided on one of the connecting segments 401, and an insertion hole 4019 provided on the other connecting segment 401 that cooperates with the insert plate 4017. A slider 4016 is provided on the insert plate 4017, and a sliding groove 4015 provided on the connecting segment 401 with the insert plate 4017 that cooperates with the slider 4016. The sliding groove 4015 has an L-shaped structure.

[0070] In this embodiment, both the second segment 4012 and the third segment 4013 are provided with insert plates 4017. The insert plate 4017 on the second segment 4012 is inserted into the first segment 4011, and the insert plate 4017 in the third segment 4013 is inserted into the second segment 4012.

[0071] In this embodiment, the slide 4015 includes a vertical groove and a horizontal groove. The vertical groove is arranged along the axial direction of the connecting section 401, and the horizontal groove is arranged perpendicular to the vertical groove.

[0072] In this embodiment, the second segment 4012 and the third segment 4013 are provided with slots for accommodating the insert plate 4017, and the slots and the slide 4015 are connected.

[0073] In this embodiment, the slider 4016 has a rectangular structure. The slider 4016 can rotate relative to the insert plate 4017 through the connecting screw. First, it slides along the vertical groove to allow the insert plate 4017 to be inserted into the insertion hole 4019. Then, by rotating the slider 4016, the slider 4016 is parallel to the outside of the horizontal groove.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dental ultrasonic bone scalpel, characterized in that: The tool includes a working tip, which includes a rod (2) connected to a handle (1). The end of the rod (2) away from the handle (1) is provided with a neck (3) and a head (4) in sequence. The head (4) adopts a curved arc structure. The angle between the axis of the head (4) and the axis of the neck (3) is 60-100°. The head (4) is provided with a cutting edge (402).

2. The dental ultrasonic bone scalpel according to claim 1, characterized in that: The arc-shaped structure of the head (4) is a hook structure. The width of the hook structure is 8-12mm and the height of the hook structure is 20-30mm. The cutting edge (402) is located at the end of the hook structure away from the neck (3).

3. The dental ultrasonic bone scalpel according to claim 1, characterized in that: The included angle corresponding to the arc-shaped structure is 140-150 degrees.

4. The dental ultrasonic bone scalpel according to claim 1, characterized in that: The head (4) has a width of 1-2 mm and a thickness of 0.5-1 mm.

5. The dental ultrasonic bone scalpel according to claim 1, characterized in that: The diameter of the neck (3) gradually decreases from the end connected to the handle (1) to the end connected to the head (4), and the diameter of the neck (3) ranges from 1.0 to 1.8 mm.

6. A dental ultrasonic bone scalpel according to any one of claims 1-5, characterized in that: The head (4) is positioned perpendicular to the neck (3).

7. A dental ultrasonic bone scalpel according to any one of claims 1-5, characterized in that: The head (4) includes several connecting segments (401), and two adjacent connecting segments (401) are connected by a first connecting part. The first connecting part includes a connecting rod (4018) and a connecting hole (4014) respectively disposed on one side of two adjacent connecting segments (401). The connecting rod (4018) and the connecting hole (4014) are connected by threads.

8. A dental ultrasonic bone scalpel according to claim 7, characterized in that: The connecting segment (401) includes a first segment (4011) connected to the neck (3), the first segment (4011) being straight or arc-shaped, the first segment (4011) being connected to a second segment (4012) having a U-shaped or V-shaped structure, the second segment (4012) being connected to a third segment (4013) having a cutting edge (402), the third segment (4013) being straight or arc-shaped.

9. A dental ultrasonic bone scalpel according to claim 7, characterized in that: A protective device is provided on two adjacent connecting sections (401). The protective device includes a plug plate (4017) provided on one of the connecting sections (401) and a plug hole (4019) provided on the other connecting section (401) to cooperate with the plug plate (4017). A slider (4016) is provided on the plug plate (4017). A sliding groove (4015) is provided on the connecting section (401) with the plug plate (4017) to cooperate with the slider (4016). The sliding groove (4015) has an L-shaped structure.

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