Elbow high-speed dental handpiece

Abstract

The utility model relates to the technical field of dental handpieces, in particular to an elbow dental high-speed handpiece, which comprises a handpiece and a handle which are connected with each other, the handpiece is provided with a bur, the bur is positioned on the central axis of the handpiece, the handle comprises an arc-shaped connecting section and a straight mounting section, one end of the arc-shaped connecting section is connected with the handpiece, and the other end of the arc-shaped connecting section is connected with the straight mounting section. The straight mounting section is used for mounting an air inlet pipe, a water inlet pipe and an air return pipe; the included angle alpha between the straight installation section and the extension line, extending to the position above the machine head, of the machine needle ranges from 65 degrees to 70 degrees. By limiting the angle between the machine needle and the tail end of the handle, a doctor can conveniently observe a treatment part during dental treatment, and treatment operation of the doctor is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of dental mobile phones, in particular to an elbow dental high-speed mobile phone. Background Art

[0002] Dental handpieces are medical devices commonly used by dentists for cleaning, polishing, filling, grinding, etc. When using dental handpieces to treat teeth at the back of the mouth, such as wisdom teeth and posterior molars, the patient needs to open his mouth wide and the doctor twists his wrist to observe the treatment position due to the limitation of the cavity in the mouth, which seriously affects the doctor's observation field. This not only makes it difficult for the doctor to operate the treatment, but also makes the patient feel uncomfortable during the treatment.

[0003] In the prior art, there are methods for adjusting the installation angle of the dental handpiece to improve the comfort of using the dental handpiece, such as the high-speed handpiece disclosed in Chinese patent CN110179553B, which has a 95-degree angle between the handpiece barrel and the barrel seat, so that the angle between the handpiece barrel and the barrel seat is 95°, that is, the angle between the handpiece barrel and the needle is 95°. However, this patent technology does not pay attention to the relative angle between the handpiece and the handle. During dental treatment, the angle between the handle and the handpiece plays a decisive role in the position and angle of the doctor's hand. Only adjusting the angle between the handpiece barrel and the needle cannot meet the doctor's observation field during treatment. Utility Model Content

[0004] The utility model aims to provide an elbow dental high-speed handpiece, which is convenient for doctors to observe the treatment site during dental treatment by limiting the angle between the bur and the tail end of the handle, and is easy for doctors to operate.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An elbow dental high-speed handpiece, comprising a handpiece and a handle connected to each other, wherein the handpiece is provided with a needle, and the needle is located on the central axis of the handpiece, and the handle comprises an arc-shaped connecting section and a straight mounting section, wherein one end of the arc-shaped connecting section is connected to the handpiece, and the other end is connected to the straight mounting section, and the straight mounting section is used to mount an air inlet pipe, a water inlet pipe and an air return pipe;

[0007] The included angle α between the straight installation section and the extension line of the needle extending to the top of the machine head is 20° to 25°.

[0008] Furthermore, the included angle α between the straight mounting section and the needle is 24°.

[0009] Further, the machine head includes a mounting cavity and a connecting column, one end of the connecting column is connected to the side of the mounting cavity, and the other end of the connecting column is inserted into the arc-shaped connecting section;

[0010] The included angle β between the central axis of the connecting column and the central axis of the installation cavity is 40° to 45°.

[0011] Furthermore, an atomized water ring cavity is provided at the lower part of the installation cavity, and an atomized water nozzle is provided on the bottom wall of the atomized water ring cavity;

[0012] The connecting column is provided with a water inlet channel, an air inlet channel and an air return channel, one end of the air inlet channel is connected to the water inlet pipe, and the other end is connected to the installation cavity; the air return channel is connected to the air return pipe, and the water inlet channel is connected to the atomized water ring cavity;

[0013] An atomizing gas channel is also provided in the connecting column, and the water inlet channel and the air inlet channel are connected via the atomizing gas channel.

[0014] Furthermore, an upper bearing, a lower bearing and a rotating shaft are arranged in the installation cavity, the upper bearing and the lower bearing are both sleeved on the rotating shaft, and a turbine is arranged between the upper bearing and the lower bearing;

[0015] An anti-suction rubber piece is arranged between the lower bearing and the inner wall of the installation cavity, the atomized water ring cavity is located below the anti-suction rubber piece, and the rotating shaft passes through the anti-suction rubber piece.

[0016] Furthermore, the anti-sucking rubber member comprises an outer sealing ring, a conical ring and an inner sealing ring, the bottom of the outer sealing ring is connected to the outer edge of the conical ring, and the inner sealing ring is located in the center of the conical ring;

[0017] The outer sealing ring is located between the lower bearing and the inner wall of the installation cavity, the outer wall of the rotating shaft is provided with a convex ring, and the inner sealing ring is located below the convex ring;

[0018] A deformation cavity is formed between the conical ring and the lower bearing, and the deformation of the deformation cavity causes the inner sealing ring and the convex ring to stick to or separate from each other.

[0019] Furthermore, the top surface of the inner sealing ring and the bottom surface of the convex ring are both inclined surfaces.

[0020] The technical solution provided by the utility model may have the following beneficial effects:

[0021] 1. By limiting the included angle α between the straight mounting section and the needle to 20° to 25°, and realizing the connection between the straight mounting section and the handpiece with an arc-shaped connecting section, the handpiece is made to be at an included angle with the handle as a whole. After the handpiece is inserted into the oral cavity, the handle can be closer to the upper or lower jaw, so that the doctor has a wider field of view of the oral cavity and is convenient for observing the treatment position. It is easier for the doctor to perform treatment operations using the dental handpiece of the utility model.

[0022] 2. The water inlet channel and the air inlet channel are connected through the atomizing air channel, and there is no need to set an atomizing air pipe in the handle, so that the handle structure is simple.

[0023] 3. Anti-suckback rubber parts effectively prevent sewage and debris from being sucked back into the machine head, ensuring the cleanliness of the inner cavity of the machine head and preventing cross infection. The outer sealing ring of the anti-suckback rubber parts is used as a seal between the lower bearing and the installation cavity, which simplifies the sealing structure and can achieve the effect of reducing the size of the machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an elbow dental high-speed mobile phone according to an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 The schematic diagram of the structure of the elbow dental high-speed handpiece from another perspective is shown;

[0026] Figure 3 It is a schematic diagram of the nose;

[0027] Figure 4 It is a schematic diagram of the structure of the mounting cavity and the connecting column of the machine head;

[0028] Figure 5 It is a cross-sectional view of the machine head along the axial direction of the needle;

[0029] Among them, the head 1, the installation cavity 11, the atomizing water ring cavity 111, the upper bearing 112, the lower bearing 113, the rotating shaft 114, the turbine 115, the connecting column 12, the water inlet channel 121, the air inlet channel 122, the return air channel 123, the anti-back-suction rubber part 13, the outer sealing ring 131, the conical ring 132, the inner sealing ring 133, the deformation cavity 134, the needle 14, the handle 2, the arc-shaped connecting section 21, the straight installation section 22, the air inlet pipe 221, the water inlet pipe 222, and the return air pipe 223. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Combine the following Figures 1 to 5 , describing an elbow dental high-speed mobile phone according to an embodiment of the utility model.

[0034] An elbow dental high-speed handpiece, comprising a handpiece 1 and a handle 2 connected to each other, the handpiece 1 being provided with a needle 14, the needle 14 being located on the central axis of the handpiece 1, the handle 2 comprising an arc-shaped connecting section 21 and a straight mounting section 22, one end of the arc-shaped connecting section 21 being connected to the handpiece 1, and the other end being connected to the straight mounting section 22, the straight mounting section 22 being used for mounting an air inlet pipe 221, a water inlet pipe 222 and an air return pipe 223;

[0035] The included angle α between the straight installation section 22 and the extension line of the needle 14 extending to the top of the machine head 1 is 20° to 25°.

[0036] The utility model limits the included angle α between the straight installation section 22 and the needle 14 to 20°~25°, and realizes the connection between the straight installation section 22 and the head 1 with the arc-shaped connecting section 21, so that the head 1 is at an included angle with the handle 2 as a whole. After the head 1 is inserted into the oral cavity, the handle 2 can be closer to the upper jaw or the lower jaw, so that the doctor has a wider observation field of view of the oral cavity and is convenient for observing the treatment position. It is easier for the doctor to perform treatment operations using the dental mobile phone of the utility model.

[0037] It should be noted that the arc-shaped connecting end is a smooth arc-shaped end for connecting the straight mounting section 22 to the handpiece 1. The utility model limits the angle between the straight mounting section 22 and the handpiece 1, rather than the angle between the handpiece 1 and the arc-shaped connecting end, and can more accurately limit the angle of the handpiece 1, thereby ensuring that the dental handpiece provides a wide field of view for the doctor when in use.

[0038] Specifically, channels for positioning the air inlet pipe 221 , the water inlet pipe 222 and the air return pipe 223 are provided in the straight installation section 22 .

[0039] Preferably, the angle α between the straight mounting section 22 and the needle 14 is 24°. At this time, when a dental mobile phone is used to treat teeth at the back of the oral cavity, it can not only make way for the doctor's observation field of view, but also ensure that the needle 14 has a suitable angle with the treatment position.

[0040] Furthermore, the head 1 includes a mounting cavity 11 and a connecting column 12, one end of the connecting column 12 is connected to the side of the mounting cavity 11, and the other end of the connecting column 12 is inserted into the arc-shaped connecting section 21;

[0041] The included angle β between the central axis of the connecting column 12 and the central axis of the mounting cavity 11 is 40° to 45°.

[0042] In one embodiment of the utility model, the angle between the connecting column 12 and the mounting cavity 11 is limited. Based on the connection of the connecting column 12 in the arc-shaped connecting section 21 in an insertion manner, the angle between the arc-shaped connecting section 21 and the mounting cavity 11 is limited, so that the connection position between the head 1 and the handle 2 has no effect on the doctor's observation field of view.

[0043] Furthermore, an atomized water ring cavity 111 is provided at the lower part of the installation cavity 11, and an atomized water nozzle is provided on the bottom wall of the atomized water ring cavity 111;

[0044] The connecting column 12 is provided with a water inlet channel 121, an air inlet channel 122 and an air return channel 123. One end of the air inlet channel 122 is connected to the water inlet pipe 222, and the other end is connected to the installation cavity 11; the air return channel 123 is connected to the air return pipe 223, and the water inlet channel 121 is connected to the atomized water ring cavity 111;

[0045] An atomizing gas channel is also provided in the connecting column 12 , and the water inlet channel 121 and the air inlet channel 122 are connected via the atomizing gas channel.

[0046] In one embodiment of the utility model, an atomized water ring cavity 111 is provided at the lower part of the installation cavity 11 to achieve cleaning of the treatment area, and a plurality of atomized water nozzles are provided to achieve an efficient cleaning effect. This embodiment also connects the water inlet channel 121 and the air inlet channel 122 through an atomized gas channel (not shown in the figure), and there is no need to provide an atomized gas pipe in the handle 2, so that the handle 2 has a simple structure. It can be understood that the atomized gas is used to mix with the water in the water inlet channel 121 to form atomized water, and the atomized water is sprayed to clean the treatment area. Specifically, the water inlet channel 121, the air inlet channel 122 and the atomized gas channel are all processed by drilling.

[0047] Furthermore, an upper bearing 112, a lower bearing 113 and a rotating shaft 114 are arranged in the installation cavity 11. The upper bearing 112 and the lower bearing 113 are sleeved on the rotating shaft 114. A turbine 115 is arranged between the upper bearing 112 and the lower bearing 113.

[0048] An anti-suction rubber member 13 is disposed between the lower bearing 113 and the inner wall of the installation cavity 11 . The atomized water ring cavity 111 is located below the anti-suction rubber member 13 . The rotating shaft 114 passes through the anti-suction rubber member 13 .

[0049] In one embodiment of the utility model, an anti-back-sucking rubber part 13 is provided in the mounting cavity 11 of the machine head 1, which effectively prevents sewage and debris from being back-sucked into the machine head 1, ensures the cleanliness of the inner cavity of the machine head 1, and prevents cross infection. The anti-back-sucking rubber part 13 is located between the lower bearing 113 and the inner wall of the mounting cavity 11, and the rotating shaft 114 passes through the anti-back-sucking rubber part 13, so that the anti-back-sucking rubber part 13 can block the gap between the rotating shaft 114 and the mounting cavity 11, preventing sewage from entering the mounting cavity 11.

[0050] Furthermore, the anti-sucking rubber member 13 includes an outer sealing ring 131, a conical ring 132 and an inner sealing ring 133, the bottom of the outer sealing ring 131 is connected to the outer edge of the conical ring 132, and the inner sealing ring 133 is located in the center of the conical ring 132;

[0051] The outer sealing ring 131 is located between the lower bearing 113 and the inner wall of the installation cavity 11, and a convex ring is provided on the outer wall of the rotating shaft 114, and the inner sealing ring 133 is located below the convex ring;

[0052] A deformation cavity 134 is formed between the conical ring 132 and the lower bearing 113 , and the deformation of the deformation cavity 134 causes the inner sealing ring 133 and the convex ring to stick to or separate from each other.

[0053] In one embodiment of the present invention, the outer sealing ring 131 of the anti-back-sucking rubber member 13 is preferably used as a sealing member between the lower bearing 113 and the mounting cavity 11, which simplifies the sealing structure and can achieve the effect of reducing the volume of the handpiece 1. A deformation cavity 134 is formed between the conical ring 132 and the lower bearing 113. When the dental handpiece is working, gas enters the mounting cavity 11 from the air inlet pipe, blows the turbine 115 to rotate, and the excess gas is discharged from the return air pipe 223. At this time, the air pressure in the mounting cavity 11 is positive pressure. When the dental handpiece needs to stop working, the air inlet pipe stops inputting gas into the mounting cavity 11, but the turbine 115 continues to rotate due to inertia, making the air pressure in the mounting cavity 11 negative pressure. At this time, the deformation cavity 134 is deformed, and the inner sealing ring 133 is tightly attached to the convex ring, closing the gap between the rotating shaft 114 and the mounting cavity 11, preventing sewage from being sucked back into the mounting cavity 11, and also playing a braking effect on the turbine 115. Specifically, the anti-sucking rubber component 13 is an integrally formed rubber component.

[0054] Preferably, the top surface of the inner sealing ring 133 and the bottom surface of the convex ring are both inclined surfaces, so that the inner sealing ring 133 and the convex ring have a larger contact area to ensure the sealing effect.

[0055] Other structures and operations of an elbow dental high-speed mobile phone according to an embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0056] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An elbow dental high-speed handpiece, characterized in that: It comprises a handpiece and a handle connected to each other, wherein the handpiece is provided with a needle, and the needle is located on the central axis of the handpiece, and the handle comprises an arc-shaped connecting section and a straight mounting section, wherein one end of the arc-shaped connecting section is connected to the handpiece, and the other end is connected to the straight mounting section, and the straight mounting section is used to mount an air inlet pipe, a water inlet pipe and a return air pipe; The included angle α between the straight installation section and the turning needle is 20° to 25°.

2. The elbow dental high-speed handpiece according to claim 1, characterized in that: The included angle α between the straight installation section and the turning needle is 24°.

3. The elbow dental high-speed handpiece according to claim 1 or 2, characterized in that: The machine head comprises a mounting cavity and a connecting column, one end of the connecting column is connected to the side of the mounting cavity, and the other end of the connecting column is inserted into the arc-shaped connecting section; The included angle β between the central axis of the connecting column and the central axis of the installation cavity is 40° to 45°.

4. The elbow dental high-speed handpiece according to claim 3, characterized in that: An atomized water ring cavity is provided at the lower part of the installation cavity, and an atomized water nozzle is provided on the bottom wall of the atomized water ring cavity; The connecting column is provided with a water inlet channel, an air inlet channel and an air return channel, one end of the air inlet channel is connected to the water inlet pipe, and the other end is connected to the installation cavity; the air return channel is connected to the air return pipe, and the water inlet channel is connected to the atomized water ring cavity; An atomizing gas channel is also provided in the connecting column, and the water inlet channel and the air inlet channel are connected via the atomizing gas channel.

5. The elbow dental high-speed handpiece according to claim 4, characterized in that: An upper bearing, a lower bearing and a rotating shaft are arranged in the installation cavity, the upper bearing and the lower bearing are both sleeved on the rotating shaft, and a turbine is arranged between the upper bearing and the lower bearing; An anti-suction rubber piece is arranged between the lower bearing and the inner wall of the installation cavity, the atomized water ring cavity is located below the anti-suction rubber piece, and the rotating shaft passes through the anti-suction rubber piece.

6. The elbow dental high-speed handpiece according to claim 5, characterized in that: The anti-sucking rubber part comprises an outer sealing ring, a conical ring and an inner sealing ring, the bottom of the outer sealing ring is connected to the outer edge of the conical ring, and the inner sealing ring is located in the center of the conical ring; The outer sealing ring is located between the lower bearing and the inner wall of the installation cavity, the outer wall of the rotating shaft is provided with a convex ring, and the inner sealing ring is located below the convex ring; A deformation cavity is formed between the conical ring and the lower bearing, and the deformation of the deformation cavity causes the inner sealing ring and the convex ring to stick to or separate from each other.

7. The elbow dental high-speed handpiece according to claim 6, characterized in that: The top surface of the inner sealing ring and the bottom surface of the convex ring are both inclined surfaces.

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