Split drill for oral clinical refined operation and dental handpiece

Abstract

The utility model relates to the technical field of oral cavity medical instruments, in particular to a split drill and a dental handpiece for oral cavity clinical refined operation, the split drill comprises a working body and a connecting rod, the working body and the connecting rod are integrally formed and are in smooth transition, the working body is conical, and the connecting rod is connected with the working body. A plurality of mark points are arranged on the surface of the connecting rod at intervals in the axial direction of the connecting rod, the colors of the mark points are different, and the color of the mark points is different from that of the connecting rod. The dental handpiece comprises the split drill for oral clinical refined operation. A plurality of mark points are arranged on the surface of the connecting rod in the axial direction, the colors of the mark points are different, the different mark points can present an annular line in the high-speed movement process, an operator can accurately judge the working depth of the fracture drill according to the annular line, the pulp opening depth can be more accurately and clearly controlled, the overall structure is simple, use is convenient, and the practicability is high. A dentist can conveniently judge the punching depth, and the medical quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical instruments, in particular to a crack drill and a dental handpiece used for precise clinical oral operations. Background Art

[0002] The clinical application of split drills places high demands on both cutting and grinding depths. For example, during impacted tooth extraction, insufficient cutting depth can lead to failed crown separation, ultimately preventing extraction of the impacted tooth, while excessive cutting depth increases the risk of damage to adjacent anatomical structures (such as the alveolar nerve). Another example is during pulpotomy and crown removal, insufficient grinding depth can lead to failed crown removal, while excessive grinding depth can damage the pulp chamber floor. Accurately controlling the working depth of split drills to achieve refined, minimally invasive procedures is both a difficult and crucial clinical challenge.

[0003] Achieving precise drilling requires two key elements: precise measurement of the tooth's anatomy and accurate control of the drill's working depth during operation. The first has been addressed through the widespread use of CBCT. However, a suitable solution for the second remains lacking. This is primarily because the drills currently used in clinical practice lack a depth indicator. Clinical operation still relies heavily on the operator's experience to determine the drilling depth, which undoubtedly increases the difficulty of the procedure. Utility Model Content

[0004] The purpose of the utility model is to provide a crack drill and a dental handpiece for oral clinical fine operation, which can solve the above technical problems.

[0005] The utility model provides a fissure drill for clinical fine oral operations, comprising a working body and a connecting rod, wherein the working body and the connecting rod are integrally formed and smoothly transitioned, the working body is conical, and a plurality of marking points are provided on the surface of the connecting rod at intervals along its axial direction, and each marking point has a different color and is different from the color of the connecting rod.

[0006] Furthermore, the working body and connecting rod are made of tungsten steel, an extremely hard material that maintains a sharp cutting edge and resists wear even under high-speed rotation and continuous use. This property enables efficient and precise drilling of hard tissues such as cementum. Tungsten steel also has excellent corrosion resistance and can be used in the moist environment of the mouth without rusting, extending the tool's lifespan. Tungsten steel's high rigidity means the drill is less likely to bend or deform during drilling, ensuring stable and precise operation. Even under the heat generated by high-speed rotation, tungsten steel maintains its physical properties, preventing loss of hardness or deformation due to overheating.

[0007] Furthermore, the length of the working body is 6 mm, the length of the connecting rod is 13-26 mm, and the diameter of the connecting rod is 1.6 mm. Specifically, the lengths of the connecting rods are 13 mm, 19 mm, 22 mm, and 26 mm, respectively. That is, the overall lengths of the split drill body (working body and connecting rod) are 19 mm, 25 mm, 28 mm, and 32 mm, respectively.

[0008] Furthermore, a concave point is provided at a position where the marking point is set on the surface of the connecting rod, and a colored paint layer is coated in the concave point.

[0009] Furthermore, the pits are formed by electrochemical etching, which does not involve mechanical contact and therefore does not affect the structural integrity of the tungsten carbide crack drill. This technology can precisely control the etching depth, thereby avoiding damage to the mechanical strength and durability of the tool; the equipment and process of electrochemical etching are relatively simple, easy to automate, and suitable for large-scale production applications. This method has good repeatability and consistency, which can ensure the quality and consistency of the marking in large-scale production; compared with laser marking and micro stamping, the equipment and operating costs of electrochemical etching are generally lower, and the material consumption and maintenance costs are also lower, which helps to control the overall production costs.

[0010] Furthermore, the diameter of the pit is 50 μm and the depth is 5 μm.

[0011] Furthermore, the distance between the marking point closest to the working body and the end of the working body is 8 mm, and the spacing between adjacent marking points is 2 mm. Specifically, marking points are set at 8 mm, 10 mm, and 12 mm from the end of the working body. In order to distinguish different working depths, the marking points at different positions are presented in different colors, namely: 8 mm - yellow, 10 mm - red, 12 mm - blue.

[0012] Furthermore, a limiting ring is fixedly sleeved on the outer surface of the connecting rod, and the diameter of the cross section of the limiting ring is larger than the diameter of the cross section of the connecting rod.

[0013] Furthermore, an annular flange is fixedly connected to one end of the limiting ring close to the working body. The limiting ring and the annular flange are integrally formed and made of an elastic transparent material. The limiting ring is fixedly sleeved on the outer surface of the connecting rod, and the two are interference fit, which also facilitates the change of the position of the limiting ring on the surface of the connecting rod. The annular flange serves to limit the maximum depth of the pulp that can be opened by different-sized split drill bodies during the pulp opening operation, which can reduce the occurrence of pulp penetration. In order to cooperate with the limiting ring to limit the drilling depth, these marking points can be used to improve the accuracy of the measurement size. At the same time, the doctor can also use the marking points to check the depth of the drilled hole.

[0014] The utility model also provides a dental handpiece, comprising the above-mentioned crack drill for precise clinical operation of the oral cavity.

[0015] Furthermore, the dental handpiece also includes a housing, a motor is provided in the housing, an output shaft of the motor is detachably connected to the crack drill, and a handle is fixedly connected to the side wall of the housing, and the handle is provided with anti-slip patterns.

[0016] Beneficial effects:

[0017] The utility model provides a plurality of marking points along the axial direction on the surface of the connecting rod, and each marking point has a different color. Different marking points will appear as annular lines during high-speed movement, and each annular line has a different color. Different annular lines can represent different cutting depths. The operator can accurately judge the working depth of the fissure drill according to the annular lines, and control the pulp opening depth more accurately and clearly, making it easier for novice dentists to get started, reducing the occurrence of errors, avoiding the phenomenon of pulp penetration, and affecting the normal diagnosis and treatment of patients. The overall structure is simple and easy to use, which is convenient for dentists to judge the drilling depth and improves the quality of medical care. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the split drill used for precise clinical oral surgery according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the crack drill and dental handpiece of the utility model in a stationary state;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model crack drill and dental handpiece in a high-speed rotating state;

[0022] Figure 4 This is a schematic diagram of the structure of the crack drill and dental handpiece of the utility model in working state;

[0023] Figure 5 This is a schematic structural diagram of the split drill according to Example 2 of the present utility model.

[0024] Explanation of the accompanying numbers: 1-working body, 2-connecting rod, 3-marking point, 4-limiting ring, 401-annular flange, 5-housing, 6-handle, 7-water inlet, 8-water spray outlet. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. 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.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example 1

[0029] A crack drill for precise clinical operation in oral cavity, such as Figure 1 As shown, it includes a working body 1 and a connecting rod 2. The working body 1 and the connecting rod 2 are made of tungsten steel. The working body 1 and the connecting rod 2 are integrally formed with a smooth transition. The working body 1 is conical, and the surface of the connecting rod 2 is provided with a plurality of marking points 3 along its axial intervals. The colors of each marking point 3 are different and different from the color of the connecting rod 2.

[0030] The length of the working body 1 is 6mm, the length of the connecting rod 2 is 13-26mm, and the diameter of the connecting rod 2 is 1.6mm. Specifically, the lengths of the connecting rod 2 are 13mm, 19mm, 22mm, and 26mm, respectively, that is, the overall lengths of the split drill body (working body 1 and connecting rod 2) are 19mm, 25mm, 28mm, and 32mm, respectively. This series of split drills includes a total of 4 split drills, including 1 regular-length split drill (19mm) mainly used for pulp opening and 3 extended split drills (the remaining 3) mainly used for complex tooth separation. The distance between the marking point closest to the working body and the end of the working body is 8mm, and the spacing between adjacent marking points 3 is 2mm. Specifically, marking points 3 are set at 8mm, 10mm, and 12mm from the end of the working body. In order to distinguish different working depths, the marking points 3 at different positions are presented in different colors, namely: 8mm-yellow, 10mm-red, and 12mm-blue.

[0031] The surface of the connecting rod 2 is provided with a concave spot where the marking point 3 is to be set. The concave spot is coated with a colored paint layer. The diameter of the concave spot is 50μm and the depth is 5μm. The concave spot is formed by electrochemical etching. Electrochemical etching does not involve mechanical contact and therefore does not affect the structural integrity of the tungsten carbide crack drill. This technology can precisely control the etching depth, thereby avoiding damage to the mechanical strength and durability of the tool. The equipment and process of electrochemical etching are relatively simple and easy to automate, making it suitable for large-scale production applications. The method has good repeatability and consistency, which can ensure the quality and consistency of the marking in large-scale production. Compared with laser marking and micro stamping, electrochemical etching generally has lower equipment and operating costs, lower material consumption and maintenance costs, and helps to control overall production costs.

[0032] Example 2

[0033] A crack drill for oral clinical precision operation, the basic structure is the same as that of embodiment 1, the difference is that Figure 1 and 5 As shown, a limiting ring 4 is fixedly sleeved on the outer surface of the connecting rod 2, and the diameter of the cross section of the limiting ring 4 is larger than the diameter of the cross section of the connecting rod 2. An annular flange 401 is fixedly connected to the end of the limiting ring 4 close to the working body 1. The limiting ring 4 and the annular flange 401 are integrally formed and made of elastic transparent material. The limiting ring 4 is fixedly sleeved on the outer surface of the connecting rod, and the two are interference fit, which also makes it convenient to change the position of the limiting ring 4 on the surface of the connecting rod 2. The annular flange 401 plays a role in limiting the maximum depth of the pulp that can be opened by different sizes of split drill bodies during the pulp opening operation, which can reduce the phenomenon of pulp penetration. In order to cooperate with the limiting ring 4 to limit the drilling depth, these marking points 3 can be used to improve the accuracy of measuring the size. At the same time, the doctor can also use the marking points 3 to check the depth of the drilled hole.

[0034] Example 3

[0035] A dental handpiece, such as Figure 2-4 As shown, it includes a housing 5, in which a motor is provided. The output shaft of the motor is detachably connected to the crack drill of Example 1. A handle 6 is fixedly connected to the side wall of the housing 5, and the handle is provided with anti-slip grooves. The handle 6 is also provided with a water spray port 8 facing the crack drill. The rear end of the handle is provided with a water inlet 7. The middle part of the handle is provided with a water inlet pipe, which connects the water inlet 7 and the water spray port 8. After being pressurized, the water flows through the water inlet, the water inlet pipe and the water spray port in sequence, and is sprayed from the water spray port 8 in the working direction of the crack drill. During dental treatment, the high-speed operation of the dental handpiece generates a large amount of heat. The water sprayed from the water spray port can effectively cool the crack drill of the dental handpiece, preventing overheating from causing damage to the tooth tissue and pulp. For example, when performing operations such as grinding teeth, if it is not cooled in time, the high temperature may cause congestion or even necrosis of the dental pulp. In addition, it can also rinse away debris, plaque and blood generated during the treatment process, maintaining a clear view of the treatment area, allowing the dentist to operate more accurately. For example, when removing caries, the water from the nozzle can quickly wash away the decayed material, allowing the dentist to more clearly see the boundaries and depth of the cavity. The sprayed water sometimes contains disinfectants to disinfect the treatment area and reduce the risk of infection.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crack drill for oral clinical precision operation, characterized by It includes a working body and a connecting rod, which are integrally formed with each other and have a smooth transition. The working body is conical, and a plurality of marking points are provided on the surface of the connecting rod along its axial direction. The colors of each marking point are different and different from the color of the connecting rod.

2. The crack drill for oral clinical precision operation according to claim 1, characterized in that: The length of the working body is 6 mm, the length of the connecting rod is 13-26 mm, and the diameter of the connecting rod is 1.6 mm.

3. The crack drill for oral clinical precision operation according to claim 1, characterized in that: A concave point is provided at a position where a marking point is provided on the surface of the connecting rod, and a colored paint layer is coated in the concave point.

4. The crack drill for oral clinical precision operation according to claim 3, characterized in that: The pits are formed by electrochemical etching.

5. The crack drill for oral clinical precision operation according to claim 3, characterized in that: The pits have a diameter of 50 μm and a depth of 5 μm.

6. The crack drill for oral clinical precision operation according to claim 1, characterized in that: The distance between the marking point closest to the working body and the end of the working body is 8 mm, and the spacing between adjacent marking points is 2 mm.

7. The crack drill for oral clinical precision operation according to claim 1, characterized in that: A limiting ring is fixedly sleeved on the outer surface of the connecting rod, and the diameter of the cross section of the limiting ring is larger than the diameter of the cross section of the connecting rod.

8. The crack drill for oral clinical precision operation according to claim 7, characterized in that: An annular flange is fixedly connected to one end of the limiting ring close to the working body. The limiting ring and the annular flange are integrally formed and made of elastic transparent material.

9. A dental handpiece, characterized in that: The invention comprises the crack drill for oral clinical precision operation according to any one of claims 1 to 8.

10. The dental handpiece according to claim 9, characterized in that The dental handpiece further comprises a housing, wherein a motor is arranged in the housing, wherein an output shaft of the motor is detachably connected to the crack drill, and a handle is fixedly connected to the side wall of the housing, wherein the handle is provided with anti-slip patterns.

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