Split drill for oral clinical refined operation and dental handpiece

Abstract

The invention relates to the technical field of oral medical instruments, in particular to a split drill for oral clinical refined operation and a dental handpiece, 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 a plurality of marking points are arranged on the surface of the connecting rod at intervals in the axial direction of the connecting rod. The colors of the marking points are different, and the color of the marking points is different from that of the connecting rod. The dental handpiece comprises the split drill for oral clinical refined operation. The multiple marking points are arranged on the surface of the connecting rod in the axial direction, the colors of the marking points are different, the different marking 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 practicability is high. A dentist can conveniently judge the punching depth, and the medical quality is improved.

Description

Technical Field

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

[0002] In the clinical application of split drills, there are high requirements for the cutting depth and grinding depth of the split drills: for example, during the extraction of impacted teeth, insufficient cutting depth will lead to failure of crown separation, and then the impacted tooth cannot be extracted, while excessive cutting depth will increase the risk of damage to adjacent anatomical structures (such as the alveolar nerve, etc.); for another example, during pulp opening and crown removal, insufficient grinding depth will lead to failure of crown removal, while excessive grinding depth will cause damage to the pulp chamber floor. How to accurately grasp the working depth of the split drill and realize refined minimally invasive operations is a difficult and key point in clinical practice.

[0003] The realization of refined operation depends on two points: one is the precise measurement of the tooth anatomical structure, and the other is the precise grasp of the working depth of the fissure drill during the operation. At present, the first point has been solved through the widespread application of CBCT. However, there is still a lack of a suitable solution for the second point. This is mainly because the drill needles widely used in clinical practice lack the depth indication function. Clinical operation still mainly relies on the operator's experience to grasp the working depth of the drill needle, which undoubtedly increases the difficulty of operation. Summary of the invention

[0004] The purpose of the present invention is to provide a fracture drill and a dental handpiece for refined oral clinical operations, which can solve the above technical problems.

[0005] The present invention provides a fissure drill for oral clinical fine operation, 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, a plurality of marking points are arranged on the surface of the connecting rod along the axial direction thereof, and each marking point has a different color and is different from the color of the connecting rod.

[0006] Furthermore, the working body and the connecting rod are made of tungsten steel, which is an extremely hard material that can maintain a sharp cutting edge and is not easily worn even under high-speed rotation and continuous use. This feature enables it to maintain high efficiency and precision when drilling hard tissues such as cementum; tungsten steel has good corrosion resistance and can be used in the moist environment of the mouth without rusting, extending the service life of the tool; tungsten steel has very high rigidity, which means that the crack drill is not easy to bend or deform during the drilling process, and can provide stable and precise operation; under the heat generated by high-speed rotation, tungsten steel can maintain its physical properties and avoid 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. The 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, suitable for large-scale production applications. The method has good repeatability and consistency, which can ensure the quality and consistency of the marking in mass 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 cost.

[0010] Furthermore, the pits have a diameter of 50 μm and a depth of 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 have different colors, namely: 8 mm—yellow, 10 mm—red, and 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. The two are interference fit, and it is also convenient to change 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 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 to limit the drilling depth, these marking points can be used to improve the accuracy of measuring the size. At the same time, the doctor can also use the marking points to check the depth of the drilled hole.

[0014] The present invention also provides a dental handpiece, comprising the above-mentioned crack drill for refined oral clinical operations.

[0015] Furthermore, the dental handpiece also includes a casing, a motor is arranged in the casing, 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 casing, and the handle is provided with anti-slip patterns.

[0016] Beneficial effects:

[0017] The present invention 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 in high-speed motion, 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 split 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 present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the split drill used for oral clinical fine operation of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the crack drill and the dental handpiece of the present invention in a static state;

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

[0022] Figure 4 It is a schematic diagram of the structure of the crack drill and the dental handpiece of the present invention in a working state;

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

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

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 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, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting 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 features. In the description of the present invention, 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 the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] A fissure 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 and have 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, and each marking point 3 has a different color and is 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 conventional 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, marking points 3 at different positions are presented in different colors, namely: 8mm-yellow, 10mm-red, 12mm-blue.

[0031] A concave point is provided at the position where the marking point 3 is set on the surface of the connecting rod 2, and a colored paint layer is applied inside the concave point. The diameter of the concave point is 50μm and the depth is 5μm. The concave point is formed by electrochemical etching. Electrochemical etching does not involve mechanical contact, so it will not affect the structural integrity of the tungsten steel crack drill. This technology can accurately 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. The method has good repeatability and consistency, which can ensure the quality and consistency of the marking in mass production; compared with laser marking and micro stamping, the equipment and operating costs of electrochemical etching are usually lower, and the material consumption and maintenance costs are also lower, which helps to control the overall production cost.

[0032] Example 2

[0033] A crack drill for oral clinical precision operation, the basic structure is the same as that of embodiment 1, except that Figure 1 and 5 As shown, a limit ring 4 is fixedly sleeved on the outer surface of the connecting rod 2, and the diameter of the cross section of the limit ring 4 is larger than the diameter of the cross section of the connecting rod 2. An annular flange 401 is fixedly connected to one end of the limit ring 4 close to the working body 1. The limit ring 4 and the annular flange 401 are integrally formed and made of elastic transparent material. The limit ring 4 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 limit ring 4 on the surface of the connecting rod 2. The annular flange 401 serves to limit the maximum depth of the pulp that can be opened by the split drill bodies of different sizes during the pulp opening operation, which can reduce the phenomenon of pulp penetration. In order to cooperate with the limit 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, a motor is arranged inside the housing 5, the output shaft of the motor is detachably connected to the crack drill of Example 1, and a handle 6 is fixedly connected to the side wall of the housing 5, and the handle is provided with anti-slip lines. The handle 6 is also provided with a water spray port 8 facing the crack drill direction, a water inlet 7 is arranged at the rear end of the handle, and a water inlet pipe is arranged in the middle of the handle, and the water inlet pipe 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 toward the working direction of the crack drill. During dental treatment, a large amount of heat is generated when the dental handpiece runs at a high speed. The water sprayed from the water spray port can effectively cool the crack drill of the dental handpiece to prevent 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 pulp. In addition, the debris, plaque and blood generated during the treatment process can be washed away to maintain a clear field of vision in the treatment area, so that the dentist can operate more accurately. For example, when removing carious tissue, the water from the water nozzle can quickly wash away the carious material, allowing the dentist to see the boundary and depth of the caries cavity more clearly. Disinfectants are sometimes added to the sprayed water to disinfect the treatment area to a certain extent 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate 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 in that It comprises 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 arranged on the surface of the connecting rod along its axial direction. The colors of each marking point are different and are 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 the 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.

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 an elastic transparent material.

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

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

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