High-speed handpiece and dental drill with spray and suction functions

Abstract

The present invention provides a high-speed handpiece and a dental drill with spray and suction functions, belonging to the technical field of medical devices, comprising a blade, the blade is cylindrical, one end of the blade is connected to a handle, the other end of the blade is an end blade, and the side of the blade is provided with a peripheral blade. By providing the peripheral blade, cutting can be performed in all directions, and by providing the end blade, feeding motion can be performed, vertical cutting can be performed, and cutting efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a high-speed mobile phone and a dental drill with spray and suction functions. Background Art

[0002] Impacted teeth are teeth that cannot erupt partially or completely due to obstruction by adjacent teeth, bones or soft tissues, and will never erupt again. For impacted teeth or tooth germs buried in the jawbone, traditional tooth extraction requires extensive cutting of the jawbone to relieve resistance, which may lead to problems such as maxillary sinus perforation or inferior alveolar nerve damage, severe postoperative reactions and low cooperation of children in tooth extraction. Therefore, minimally invasive tooth extraction has been developed. Minimally invasive tooth extraction is a method that uses minimally invasive tooth extraction methods and instruments to preserve soft and hard tissues as much as possible, so as to minimize damage to patients, improve the comfort of the treatment process, and facilitate postoperative repair and reconstruction.

[0003] At present, the minimally invasive tooth extraction instruments commonly used in clinical practice are mainly turbines and ultrasonic bone knives. The turbine is a traditional minimally invasive tooth extraction instrument. It is mainly used as a cutting tool to cut teeth into multiple small pieces to remove resistance and facilitate extraction. The ultrasonic bone knives are a relatively new type of minimally invasive tooth extraction instrument. Compared with turbines, they are less traumatic, but the cutting efficiency is lower. The longer operation time cannot further reduce the postoperative adverse reaction rate. The fundamental limitation of minimally invasive tooth extraction instruments at present is that their cutting blades have a small diameter of about 1 to 2 mm, which cannot crush the third molar tooth germ in large pieces. The remaining large tooth fragments still require a large range of jaw cutting to remove resistance, and they also need to be extracted with other tooth extraction instruments. The small diameter and slender structure make them only have the functions of horizontal cutting and vertical drilling into a small range, and the vertical large-scale crushing function is limited. They do not have the function of suction and removal of chips, and need to be placed next to the saliva suction tube. In clinical operations, they have a series of disadvantages such as blocking the line of sight, requiring additional assistants to operate, and overflowing waste liquid remaining in the patient's mouth causing discomfort. Summary of the invention

[0004] The purpose of the present invention is to provide a high-speed handpiece and a dental drill with spray and suction functions, so as to solve the technical problem that the cutting blade of the prior art minimally invasive tooth extraction instruments has a small diameter, so that they only have the functions of horizontal cutting and vertical drilling in a small range, and have limited vertical large-range crushing effect.

[0005] The invention discloses a dental drill, comprising a blade portion, which is cylindrical, one end of which is connected with a handle, the other end of which is an end blade, and a peripheral blade is arranged on the side of the blade portion.

[0006] Working principle: By setting the peripheral blade, cutting can be performed in all directions; by setting the end blade, feed motion can be performed, vertical cutting can be performed, and cutting efficiency can be improved.

[0007] Further, the maximum diameter d1 of the blade is in the range of 4mm-7mm (±0.08mm); preferably 4mm, 5mm, 6mm, 7mm (±0.08mm), the blade inclination angle α is in the range of 4° to 8°, the helix angle β is in the range of 10° to 20°, the end blade main deflection angle Kr is 4° to 8°, the blade length L1 is 5mm-6mm, the total length L2 of the dental drill is 25mm (±0.5mm), the number of cutting edges is 8-10, the peripheral blade width b is 0.3mm-0.5mm, preferably 0.3mm, 0.4mm and 0.5mm (±0.1mm), the tooth height h is 0.7mm-1.2mm (±0.2mm), and the peripheral blade rake angle γ n1 0°~2°, the back angle of the peripheral blade is α n1 It is 8°~10°, the end blade front angle γ2 is 8°~10°, the end blade back angle α2 is 6°~8°, the blade and the handle are connected by an arc, and the arc radius is r.

[0008] By setting the range of the maximum diameter d1 of the blade, which is larger than the diameter of traditional turbine drill bits, it has the ability to crush teeth in a large vertical range and can crush teeth in large pieces, reducing the need for jaw cutting and the use of other tooth extraction instruments, thereby reducing damage to the soft and hard tissues of the patient's oral cavity; at the same time, while being able to achieve the purpose of crushing teeth, its diameter is relatively limited, which can reduce the wound as much as possible and achieve the purpose of minimally invasive surgery.

[0009] By setting the helix angle β to 10° to 20°, which increases with the increase of d1, the relationship between the cutting torque and the axial tension is controlled to ensure that the working process does not generate excessive axial tension and is stable.

[0010] The end blade main rake angle Kr is set to 4°~8°, which decreases with the increase of d1. A smaller end blade main rake angle is designed to reduce the axial cutting force when the needle contacts the tooth, ensuring that the working process can proceed stably.

[0011] By setting the number of cutting edges to increase with the increase of the diameter d1, the rigidity of the cutting edge is improved, and the stability of the working process is improved.

[0012] By setting the end edge rake angle γ2 and the circumferential edge rake angle γ n1 Size, a smaller rake angle can provide greater cutting force to improve the sharpness of the blade.

[0013] By setting the end edge back angle α2 and the circumferential edge back angle α n1 Size, a larger back angle will reduce the strength of the cutting edge, so a smaller back angle is set to increase the strength of the cutting edge.

[0014] By setting the tooth height h length, a larger tooth height will increase the size of the chip groove, which is conducive to timely discharge of debris during the tooth cutting process.

[0015] Furthermore, the handle diameter d2 is 1.6 mm (±0.08 mm).

[0016] Furthermore, the dental drill is provided with a pattern for judging the penetration depth of the dental drill.

[0017] By setting the pattern, the depth of penetration of the dental drill can be determined based on the remaining extent of the pattern after entering the tissue.

[0018] The second purpose of the present invention is to protect: a high-speed mobile phone with spray and suction function, which has the above-mentioned drill bit.

[0019] Furthermore, the angle between the dental drill and the high-speed mobile phone is 45° to 90°.

[0020] By setting the angle between the dental drill and the high-speed mobile phone to 45° to 90°, the maneuverability in the oral cavity is better than conventional long-handled knives, dental elevators, dental forceps, etc., the patient's mouth opening degree can be smaller, and the risk of patients suffering from temporomandibular joint diseases can be reduced.

[0021] Furthermore, the high-speed mobile phone includes a water absorption hole.

[0022] By setting the water suction hole, the high-speed handpiece has the suction function, and there is no need to place a saliva suction tube next to it. It can provide a clear field of vision for the operator, does not require additional assistants to operate, reduces overflow of waste liquid and reduces patient discomfort, etc.

[0023] Furthermore, one end of the water absorption hole is connected to the outside.

[0024] The water suction hole can be connected to the outside world so as to be connected to a clinical dental chair, and the clinical dental chair provides cooling water and suction force.

[0025] Furthermore, the other end of the water absorption hole is connected to a water absorption cover.

[0026] By setting up a water absorption hood, the waste cutting fluid and tooth debris are gathered through the water absorption function, so that the waste fluid and waste debris are concentrated and discharged from the water absorption pipe. While the water absorption hood plays the role of gathering and attracting the debris, it can also play a limiting role in conjunction with the guide plate system to limit the entry direction and depth, without opening the mucoperiosteal flap (this step must be performed for minimally invasive tooth extraction performed by traditional turbines), reducing trauma.

[0027] Furthermore, a water spray hole is arranged below the water absorption hole.

[0028] By providing the water spray hole, cooling water can be sprayed to the dental drill, thereby cooling and lubricating the dental drill and the cut teeth and bone tissues.

[0029] Furthermore, a pneumatic drive device is provided in the high-speed mobile phone.

[0030] By providing a pneumatic drive device, the rotation speed is greatly increased compared to an electric drive, which significantly improves the cutting efficiency of the dental drill, improves the efficiency and effect of oral clinical treatment, and reduces the pain of patients during the treatment process.

[0031] Furthermore, the pneumatic drive device includes an air jet hole, an air outlet hole and a pneumatic motor impeller.

[0032] The gas ejected from the jet hole is directly used to drive the air motor impeller to rotate to drive the dental drill to rotate. The exhaust gas after the air motor impeller rotates is discharged through the outlet hole to maintain a constant air pressure inside the high-speed handpiece and reduce the possibility of complications such as subcutaneous emphysema caused by gas overflowing from the bottom of the high-speed handpiece.

[0033] The third object of the present invention is to protect a method for using a high-speed mobile phone, wherein the high-speed mobile phone is used in conjunction with an imaging system.

[0034] The use of a high-speed mobile phone in conjunction with an imaging system provides a clear field of view for surgery, facilitating precise minimally invasive surgery within the jaw.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The high-speed handpiece and carbide dental drill provided by the invention can simultaneously perform three functions: crushing soft and hard tissues, cooling the dental drill and tissues, and sucking debris from the tip of the dental drill. The added suction function does not require a saliva suction tube to be placed next to it. It has a series of advantages such as clear vision for the operator, no need for additional assistants to operate, and reduced overflow of waste liquid to reduce patient discomfort. Since the lower end of the high-speed handpiece has a suction function, the negative pressure generated can prompt the tissue debris generated during the grinding process to move toward the tail end of the dental drill, thereby reducing the amount of debris that overflows from the outside of the dental drill or enters deep into the tissue, thereby reducing the possibility of long-term inflammation, so as to achieve the purpose of reducing the pain of patients and benefiting patients.

[0037] 2. The carbide dental drill provided by the present invention has a larger diameter than the traditional turbine dental drill and has the ability to crush teeth vertically over a large range. It can crush teeth in large pieces, reducing the need for jaw cutting and the use of other tooth extraction instruments, thereby reducing damage to the soft and hard tissues of the patient's oral cavity; while being able to achieve the purpose of crushing teeth, its diameter is relatively limited, which can minimize the wound as much as possible and achieve the purpose of minimally invasive surgery;

[0038] 3. While increasing the blade diameter, the present invention sets the end blade main deflection angle Kr to 4° to 8° to reduce the axial cutting force when the needle contacts the tooth, ensuring that the working process can be carried out stably. At the same time, the number of cutting edges of the needle increases with the increase of the diameter d1, thereby improving the rigidity of the needle.

[0039] 4. The carbide dental drill provided by the present invention is structured at 45° to 90° with the high-speed handpiece, which is easier to operate in the oral cavity than conventional long-handled knives, dental elevators, dental forceps, etc., and the patient can open his mouth more narrowly, which can reduce the risk of patients suffering from temporomandibular joint diseases;

[0040] 5. The present invention can be used in conjunction with imaging systems such as endoscopes and a customized intraoral guide system. Since the surgical area can be entered vertically and straightly to crush the teeth, and a limiting device is used in conjunction with a personalized oral guide made using CBCT data to limit the direction and depth of entry of the cutting blade, the uncertainties in the surgery are reduced, and there is no need to open the mucoperiosteal flap, which causes less trauma to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 This is a schematic diagram of the structure of the dental drill according to the present invention from the right side;

[0043] Figure 2 It is a schematic diagram of the cross section of the end blade of the present invention;

[0044] Figure 3 This is a front view structural diagram of the dental drill of the present invention;

[0045] Figure 4 This is a schematic diagram of the three-dimensional structure of the high-speed mobile phone of the present invention;

[0046] Figure 5 It is a schematic diagram of the front cross-sectional structure of the high-speed mobile phone of the present invention;

[0047] Figure 6 This is an enlarged structural diagram of part A of the high-speed mobile phone of the present invention;

[0048] Figure 7 This is a schematic diagram of the air jet hole structure of the high-speed mobile phone of the present invention;

[0049] Figure 8 It is a schematic diagram of the air outlet structure of the high-speed mobile phone of the present invention.

[0050] In the figure: 1-blade, 2-handle, 3-end blade, 4-circumferential blade, 5-pattern, 6-dental drill, 7-high-speed mobile phone, 8-water absorption hole, 9-water absorption cover, 10-water spray hole, 11-pneumatic drive device, 12-jet hole, 13-air outlet hole, 14-air motor wind wheel. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0052] Example 1

[0053] A dental drill, the structure of which is as follows Figure 1-Figure 3 As shown, it includes a blade 1, the blade 1 is cylindrical, the blade 1 is connected to the handle 2 in an arc, the other end of the blade 1 is an end blade 3, and a peripheral blade 4 is arranged on the side of the blade 1. The diameter d1 of the blade 1 is 7 mm, the inclination angle α of the blade 1 is 8°, the helix angle β is 20°, the main deflection angle Kr of the end blade 3 is 6°, the length L1 of the blade 1 is 6 mm, the total length L2 of the dental drill 6 is 25 mm, the number of cutting edges is 10, the blade width b of the peripheral blade 4 is 0.5 mm, the tooth height h is 1.2 mm, and the normal rake angle γ of the peripheral blade 4 n1 2°, the back angle of the peripheral blade 4 is α n1 The front angle γ2 of the end blade 3 is 10°, the back angle α2 of the end blade 3 is 6°, and the transition arc r is 1.2 mm.

[0054] Working principle: By setting the peripheral blade 4, it can cut in all directions, and by setting the end blade 3, it can make a feed motion and cut vertically to improve cutting efficiency. By setting the maximum diameter d1 of the blade 1 to be larger than the diameter of the traditional turbine drill, it has the ability to crush teeth in a large vertical range, and can crush teeth in large pieces, reducing the need for jaw cutting and the use of other tooth extraction instruments, thereby reducing damage to the soft and hard tissues of the patient's oral cavity; at the same time, while being able to achieve the purpose of crushing teeth, its diameter is relatively limited, which can minimize the wound as much as possible and achieve the purpose of minimally invasive surgery.

[0055] The blade 1 and the handle 2 are connected by an arc to avoid stress concentration leading to the breakage of the needle. The radius r of the arc is 0.8 to 1.2 mm and increases with the increase of d1.

[0056] By setting the helix angle β to 10° to 20°, which increases with the increase of d1, the relationship between the cutting torque and the axial tension is controlled to ensure that the working process does not generate excessive axial tension and is stable.

[0057] The main rake angle Kr of the end blade 3 is set to 4°~8°, which decreases as d1 increases. A smaller main rake angle of the end blade 3 is designed to reduce the axial cutting force when the needle contacts the tooth, ensuring that the working process can proceed stably.

[0058] By setting the number of cutting edges to increase with the increase of the diameter d1, the rigidity of the blade 1 is improved, and the stability of the working process is improved.

[0059] By setting the rake angle γ2 of the end edge 3 and the normal rake angle γ of the peripheral edge 4 n1 Size, a smaller rake angle can provide greater cutting force to improve the sharpness of the blade.

[0060] By setting the end edge 3 back angle α2 and the peripheral edge 4 back angle α n1 Size, a larger back angle will reduce the strength of the cutting edge, so a smaller back angle is set to increase the strength of the cutting edge.

[0061] By setting the tooth height h length, a larger tooth height will increase the size of the chip groove, which is conducive to timely discharge of debris during the tooth cutting process.

[0062] Example 2

[0063] As a preferred embodiment of the present invention, it is improved only as follows based on Comparative Example 1, and its specific structure is as follows Figure 1-Figure 3 As shown, the maximum diameter d1 of the blade 1 is 4 mm, the inclination angle α of the blade 1 is 4°, the helix angle β is 15°, the main deflection angle Kr of the end edge 3 is 4°, the length L1 of the blade 1 is 5 mm, the number of cutting edges is 8, the edge width b of the peripheral edge 4 is 0.3 mm, the tooth height h is 0.4 mm, the shank diameter d2 is 1.6 mm, the edge width b of the peripheral edge 4 is 0.3 mm, the tooth height h is 0.4 mm, and the normal rake angle γ of the peripheral edge 4 is 0. n1 0°, the 4-way clearance angle of the peripheral blade is α n1 The front angle γ2 of the end blade 3 is 8°, the rear angle α2 of the end blade 3 is 8°, the transition arc r is 0.8 mm, and the dental drill 6 is provided with a pattern 5 for judging the penetration depth of the dental drill 6.

[0064] By setting the pattern 5, the penetration depth of the dental drill 6 can be determined according to the remaining extent of the pattern 5 after entering the tissue.

[0065] Example 3

[0066] A high-speed handpiece with spray and suction functions, using the dental drill 6 described in Example 1 or Example 2, its specific structure is as follows Figure 4-Figure 6 As shown, the angle between the dental drill 6 and the high-speed mobile phone 7 is 45° to 90°. The high-speed mobile phone 7 includes a water absorption hole 8. One end of the water absorption hole 8 is connected to the outside world, and the other end of the water absorption hole 8 is connected to a water absorption cover 9. A water spray hole 10 is arranged below the water absorption hole 8.

[0067] By setting the angle between the dental drill 6 and the high-speed mobile phone 7 to 45° to 90°, the maneuverability in the oral cavity is better than that of conventional long-handled knives, dental elevators, dental forceps, etc., the patient's mouth opening degree can be smaller, and the risk of patients suffering from temporomandibular joint diseases can be reduced.

[0068] By providing the water suction hole 8, the high-speed handpiece 7 has a suction function, and there is no need to place a saliva suction tube nearby. This has a series of advantages, such as a clear field of vision for the operator, no need for additional assistants to operate, and reduced overflow of waste liquid to reduce patient discomfort.

[0069] By connecting the water suction hole 8 to the outside, it can be connected to a clinical dental chair, which provides cooling water and suction.

[0070] By setting up the water absorption cover 9, the waste cutting fluid and tooth debris are gathered through the water absorption function, so that the waste fluid and waste debris are concentrated and discharged from the water absorption pipe. While the water absorption cover 9 plays the role of gathering and attracting the debris, it can also play a limiting role in conjunction with the guide plate system to limit the entry direction and depth, without opening the mucoperiosteal flap (this step must be performed in minimally invasive tooth extraction performed by traditional turbines), thereby reducing trauma.

[0071] By providing the water spray hole 10 , cooling water can be sprayed to the dental drill 6 , thereby cooling and lubricating the dental drill 6 and the cut tooth and bone tissue.

[0072] Example 4

[0073] As a preferred embodiment of the present invention, it is improved on the basis of embodiment 3 only as follows, and the specific structure is as follows Figure 4-Figure 6 As shown, a pneumatic drive device 11 is provided in the high-speed mobile phone 7 , and the pneumatic drive device 11 includes an air injection hole 12 , an air outlet hole 13 and a pneumatic motor impeller 14 .

[0074] By providing the pneumatic drive device 11, the rotation speed is greatly increased compared with the electric drive, which significantly improves the cutting efficiency of the dental drill 6, improves the efficiency and effect of oral clinical treatment, and reduces the pain of patients during the treatment process.

[0075] The gas ejected from the air jet hole 12 is directly used to drive the air motor impeller 14 to rotate so as to drive the dental drill 6 to rotate. The exhaust gas after the rotation of the air motor impeller 14 is discharged through the air outlet 13, so as to maintain the constant air pressure inside the high-speed handpiece 7 and reduce the possibility of complications such as subcutaneous emphysema caused by the gas overflowing from the bottom of the high-speed handpiece 7.

[0076] Example 5

[0077] A method for using a high-speed mobile phone 7, wherein the high-speed mobile phone 7 is used in conjunction with an imaging system.

[0078] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various forms of implementation methods under the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the scope of protection of this embodiment. The scope of protection of this embodiment shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A dental drill, characterized in that: The blade (1) comprises a blade portion (1), the blade portion (1) is cylindrical, one end of the blade portion (1) is connected to a handle portion (2), the other end of the blade portion (1) is an end blade (3), and a peripheral blade (4) is arranged on the side of the blade portion (1); The maximum diameter d1 of the blade (1) is in the range of 4 mm to 7 mm; the inclination angle α of the blade (1) is in the range of 4° to 8°, the helix angle β is in the range of 10° to 20°, the main deflection angle Kr of the end blade (3) is in the range of 4° to 8°, the length L1 of the blade (1) is in the range of 5 mm to 6 mm, the total length L2 of the dental drill (6) is 25 mm, the number of cutting edges is 8 to 10, the blade width b of the peripheral blade (4) is in the range of 0.3 mm to 0.5 mm, the tooth height h is in the range of 0.7 mm to 1.2 mm, and the normal rake angle γ of the peripheral blade (4) is in the range of 1.5 mm to 2.0 mm. n1 0°~2°, the back angle of the peripheral blade (4) is α n1 The angle of the end blade (3) is 10°, the front angle γ2 of the end blade (3) is 8°~10°, the back angle α2 of the end blade (3) is 6°~8°, and the blade (1) and the handle (2) are connected by an arc with a radius of r.

2. A dental drill according to claim 1, characterized in that: The maximum diameter d1 of the blade (1) is selected from 4 mm, 5 mm, 6 mm, and 7 mm, and the blade width b of the peripheral blade (4) is selected from 0.3 mm, 0.4 mm, and 0.5 mm.

3. A dental drill according to claim 2, characterized in that: The dental drill (6) is provided with a pattern for judging the penetration depth of the dental drill (6).

4. A high-speed mobile phone with spray and suction function, characterized in that : A dental drill (6) according to any one of claims 1 to 3, wherein the angle between the dental drill (6) and the high-speed mobile phone (7) is 45° to 90°.

5. A high-speed handpiece with spray-suction function according to claim 4, characterized in that: The high-speed mobile phone (7) comprises a water absorption hole (8).

6. A high-speed handpiece with spray-suction function according to claim 5, characterized in that: One end of the water absorption hole (8) is communicated with the outside.

7. A high-speed handpiece with spray-suction function according to claim 6, characterized in that: The other end of the water absorption hole (8) is connected to a water absorption cover (9).

8. The high-speed handpiece with spray-suction function according to claim 5, characterized in that: A water spray hole (10) is provided below the water absorption hole (8).

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