Two-hole water spraying elevation angle dental handpiece and cooling control method thereof

Abstract

The invention discloses a two-hole water spraying elevation angle dental handpiece and a cooling control method thereof. The two-hole water spraying elevation dental handpiece comprises a connecting section, a transition section and a handpiece body which are connected in sequence, the handpiece body is provided with a machine needle, two water spraying holes are formed in the front end of the handpiece body, a water inlet pipe is further arranged in the front end of the handpiece body, the two water spraying holes are both communicated with the water inlet pipe, outlets of the water spraying holes are formed in the front end of the handpiece body, and the water spraying holes are communicated with the water inlet pipe. And the water spraying holes are inclined towards the axis of the machine head body, so that the water outlet track of the water spraying holes can be intersected with the machine needle. The two water injection nozzles are arranged to inject water to the bur, so that the bur can be well cooled, and bloodstain and chippings can be flushed. And the water spraying holes are formed below (above) the machine needle, so that even if the water flow is relatively large, visual interference on the operation of a doctor is avoided, and the operation of the doctor is facilitated.

Description

Technical Field

[0001] This invention relates to the field of dental handpiece technology, and in particular to a two-hole water jet elevation angle dental handpiece and its cooling control method. Background Technology

[0002] In current dental handpiece treatments, the burs are prone to becoming contaminated with blood and debris when cutting or grinding tooth tissue at high speeds. To maintain a clear surgical field and operational precision, dentists must frequently pause treatment and switch to other tools (such as irrigators) for local rinsing with saline solution. Furthermore, the bur surface must be cleaned separately to remove any attached contaminants before continuing the procedure. This process not only disrupts the continuity of treatment but also increases the number of steps and time required, impacting treatment efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a two-hole water jet elevation angle dental handpiece and a cooling control method thereof, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: This invention provides a two-hole water jet elevation angle dental handpiece, comprising a connecting section, a transition section, and a handpiece body connected in sequence. The handpiece body is equipped with a bur, and the front end of the handpiece has two water jet holes. The front end of the handpiece also has a water inlet pipe, and both water jet holes are connected to the water inlet pipe. The outlet of the water jet hole is located at the front end of the handpiece and is inclined toward the axis of the handpiece body so that the water jet trajectory can intersect with the bur.

[0005] The beneficial effects of this invention are: Two water spray nozzles are installed to spray the bur with a relatively large water flow, which effectively cools the bur and cleans away blood and debris. Furthermore, because the spray nozzles are located below (above) the bur, even with a large water flow, it will not visually interfere with the doctor's operation, thus facilitating the procedure.

[0006] As a further improvement to the above technical solution, the water discharge trajectory of the two water spray holes can intersect with the two sides of the needle.

[0007] As a further improvement to the above technical solution, the machine head body is provided with a water spray seat, the water spray seat is provided with a plurality of spray holes at an circumferential interval, and the needle extends out from the water spray seat and is located at the center of the water spray seat.

[0008] As a further improvement to the above technical solution, the machine head body is provided with a front end bottom, and the front end bottom of the machine head is provided with a lighting lamp.

[0009] As a further improvement to the above technical solution, the outer surfaces of the connecting section, transition section and head body are all connected by a circular arc transition.

[0010] As a further improvement to the above technical solution, the connecting section and the transition section are connected at a first included angle, and the head body and the transition section are connected at a second included angle with a backward tilt. The first included angle is 135-180 degrees, and the second included angle is 40-50 degrees.

[0011] As a further improvement to the above technical solution, the water spray hole is provided with an angle-adjustable nozzle.

[0012] As a further improvement to the above technical solution, an attitude perception module is installed inside the nose body to detect the spatial attitude of the nose body in real time and generate attitude data. The control module is communicatively connected to the attitude sensing module and is used to receive the attitude data and generate control signals according to a preset cooling model. An angle adjustment mechanism is located inside the head body and is connected to the nozzle drive. It is used to receive control signals from the control module and drive the spray axis of the nozzle to deflect so that the coolant is focused on the contact area between the bur and the tooth.

[0013] As a further improvement to the above technical solution, a piezoelectric ceramic actuator is electrically connected to the control module; A miniature universal drive assembly is connected between the output end of the piezoelectric ceramic actuator and the nozzle, for converting the deformation of the piezoelectric ceramic actuator into angular deflection of the nozzle in at least one direction.

[0014] The present invention also provides a cooling control method, applied to the two-hole water jet elevation angle dental handpiece described in any of the above claims, the method comprising: Real-time acquisition of spatial orientation data of the dental handpiece head body; Based on the spatial attitude data, the expected injection target point of the coolant in the current state is dynamically calculated; Generate a drive command corresponding to the expected spray target point to control the angle adjustment mechanism to adjust the spray angle of the water jet orifice. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of an embodiment of a two-hole water jet dental handpiece provided by the present invention. Figure 2 This is a top view schematic diagram of an embodiment of a two-hole water jet dental handpiece provided by the present invention; Figure 3This is a schematic diagram of an embodiment of a two-hole water jet dental handpiece provided by the present invention. Figure 4 This is a top view schematic diagram of an embodiment of a two-hole water jet dental handpiece provided by the present invention; Figure 5 This is a side view schematic diagram of an embodiment of a two-hole water jet dental handpiece with an upward angle provided by the present invention; Figure 6 This is a cross-sectional schematic diagram of an embodiment of a two-hole water jet dental handpiece provided by the present invention.

[0016] Icon labels: Connecting section 110, first included angle 111, transition section 120, second included angle 121, head body 130, bottom of front end of head 140, water spray hole 141, water spray seat 150, spray hole 151, water inlet pipe 160. Detailed Implementation

[0017] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0020] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0021] Currently, dental handpieces used in surgery at an upward angle only have a single water jet nozzle. During surgery, the water jet is easily blocked by front teeth or other objects, failing to effectively cool the surgical area and potentially leading to medical accidents. This invention, through sophisticated design within the limited structural space of the handpiece head, achieves dual-nozzle water jet cooling, thereby increasing the reliability and safety of the surgery. (Refer to...) Figures 1 to 6 The present invention provides a two-hole water jet elevation angle dental handpiece and its cooling control method, which are described in the following embodiments: In some embodiments, refer to Figures 1 to 2 A two-hole water jet elevation angle dental handpiece includes a connecting section 110, a transition section 120, and a handpiece body 130 connected in sequence. The handpiece body 130 is equipped with a bur, the type and model of which can be selected according to actual needs. The handpiece body 130 has a front end bottom 140, and the front end bottom 140 has two water jet holes 141. The front end of the handpiece body is also equipped with a water inlet pipe 160. Both water jet holes 141 are connected to the water inlet pipe 160. The outlet of the water jet hole 141 is located at the front end bottom 140 of the handpiece body and is inclined towards the axis of the handpiece body 130 so that the water jet trajectory of the water jet hole 141 can intersect with the bur.

[0022] Two water spray nozzles 141 are installed to spray water onto the bur, with a relatively large water flow. This effectively cools the bur and cleans away blood and debris. Furthermore, because the water spray nozzles 141 are located below the bur, even with a large water flow, they do not visually interfere with the doctor's operation, thus facilitating the procedure.

[0023] Further improvements have been made to ensure that the water discharge trajectory of the two spray holes 141 intersects with the two sides of the needle, reducing visual interference while ensuring the amount of rinsing water.

[0024] Further improvements include a water spray base 150 on the head body 130. The water spray base 150 has multiple spray holes 151 spaced in a ring. The bur extends from the water spray base 150 and is located at its center, forming a composite water spray system. This creates a wider and gentler "water curtain" around the bur, primarily for "splash prevention" and "secondary cooling." This water curtain can trap debris and water mist generated during cutting, reducing contamination of the surgical field, while providing gentle background cooling for the entire working area.

[0025] Further improvements include a light source at the bottom 140 of the front end of the machine head for convenient illumination. This light can be directly directed at the area being treated, facilitating observation by the doctor. The light is positioned towards the bur for even better doctor visibility.

[0026] Further improvements include the use of rounded transitions on the outer surfaces of the connecting section 110, transition section 120, and head body 130, which enhances the grip feel of the phone.

[0027] Further improvements, refer to Figure 3 and Figure 4The connecting section 110 and the transition section 120 are connected at a first included angle 111, and the head body 130 and the transition section 120 are connected at a second included angle 121 with a backward tilt. The first included angle 111 is 135-180 degrees, and the second included angle 121 is 40-50 degrees. The handpiece 130 is connected to the connecting section 110 via a transition section 120. The transition section 120 and the connecting section 110 are connected at a first angle 111, while the transition section 120 and the handpiece 130 are connected at a second angle 121, tilted backward. The first angle 111 is 135-180 degrees, and the second angle 121 is 40-50 degrees. This creates a backward-tilted clearance space between the handpiece 130 and the connecting section 110, further expanding the doctor's operating range and facilitating observation. Compared to conventional handpieces, the handpiece 130 can be inserted deeper into the oral cavity for easier operation, making wisdom tooth manipulation more convenient. It also provides convenient conditions for increasing the water flow from the water jet nozzle 141. This embodiment further meets the requirement of increasing the water flow while maintaining the operating field of vision.

[0028] In some embodiments, the two-hole water jet elevation dental handpiece further includes a posture sensing module, a control module, and an angle adjustment mechanism. The posture sensing module is disposed within the handle or head body 130 and is used to detect the spatial posture of the head body 130 in real time and generate posture data. The control module is communicatively connected to the posture sensing module and is used to receive the posture data and generate control signals according to a preset cooling model. The angle adjustment mechanism is disposed inside the water jet base 150 and is connected to the nozzle drive, and is used to receive the control signal from the control module to drive the spray axis of the nozzle to deflect so that the coolant is focused on the contact area between the bur and the tooth. It should be noted that the nozzle in this embodiment can also be disposed at the spray hole 151.

[0029] Further improvements include a piezoelectric ceramic actuator and a miniature universal joint assembly. The piezoelectric ceramic actuator is electrically connected to the control module and includes a piezoelectric ceramic bicrystalline wafer actuator group as a power source for generating micro-displacements in the X and Y axes, arranged around the miniature universal joint assembly. The miniature universal joint assembly is connected between the output end of the piezoelectric ceramic actuator and the nozzle, used to convert the deformation of the piezoelectric ceramic actuator into angular deflection of the nozzle in at least one direction. The miniature universal joint assembly includes a miniature spherical universal joint.

[0030] Further improvements include a needle identification module for identifying the model or geometric parameters of the installed needles; The control module also communicates with the needle recognition module to jointly generate control signals based on the needle's model or geometric parameters and posture data.

[0031] Further improvements include a pre-stored cooling parameter mapping table for different needle models. These cooling parameters include at least one of the following: optimal cooling focus coordinates and flow rate. The corresponding cooling parameters can be automatically adjusted based on the needle model.

[0032] Further improvements include a miniature inertial measurement unit (MMU) for attitude sensing, which includes a gyroscope and an accelerometer to sense the phone's attitude.

[0033] This embodiment integrates a miniature electromechanical adjustment system within the head unit 130. A miniature high-precision gyroscope is encapsulated within the hand dental machine, capable of continuously sensing and outputting the precise angle and motion status of the head unit 130 in three-dimensional space. As the dentist operates within the mouth and the handpiece's posture constantly changes, this real-time data is transmitted via thin wires to a miniature control chip located at the rear of the handle.

[0034] The chip pre-stores the geometric models and cooling parameters corresponding to different needles. Simultaneously, a miniature induction coil is embedded in the phone's needle clamping mechanism to read the RFID tag pre-embedded in the needle shank, thereby automatically identifying the type of needle being loaded. The chip's function is to combine real-time input posture data and the known parameters of the current needle, and use internal algorithms to quickly calculate a result: under the current posture, at which precise location should the cooling water mist be focused on the working end of the needle to achieve optimal cooling and avoid the "shadow zone." This calculation result is instantly converted into a series of electrical signal commands.

[0035] These electrical signals are applied to a micro-mechanism within the nozzle body 130. At the heart of this mechanism is a micro-nozzle that can deflect flexibly at small angles, with precise water outlet holes. Several special piezoelectric ceramic plates are connected to the back of the nozzle. When electrical signals from the control chip are applied to these ceramic plates, they produce subtle, imperceptible micro-deformations depending on the voltage magnitude and polarity. This micro-deformation is amplified by a lever- or pin-type transmission structure, thereby driving the micro-nozzle to pitch or deflect accordingly, much like a slight turn of the wrist, thus altering the spray axis of the water mist.

[0036] Therefore, throughout the entire treatment process, whether the dentist prepares the cavity vertically, trims it horizontally, or makes an angled cut, this system works silently and continuously. A gyroscope senses the posture, a chip calculates the target, and a piezoelectric ceramic-driven nozzle follows in real time, forming a high-speed closed loop. Automatic adjustment of the spray angle not only greatly improves the safety of the pulp treatment but also provides the dentist with a clearer, more stable field of vision with less water spray.

[0037] The present invention also provides a cooling control method, applied to a two-hole water jet elevation angle dental handpiece according to any of the above claims, the method comprising: Step S100: Acquire the spatial orientation data of the dental handpiece head 130 in real time; Step S200: Based on spatial attitude data, dynamically calculate the expected injection target point of the coolant in the current state; Step S300: Generate a drive command corresponding to the expected spray target point to control the angle adjustment mechanism to adjust the spray angle of the water jet hole 141.

[0038] This method can adaptively adjust the spray angle, achieving precise cooling that hits exactly where you point it, thus improving efficiency.

[0039] Specifically, prior to the "real-time acquisition" step, the following steps are also included: Identify the model of the currently installed needle; The "dynamic calculation" step specifically involves: calculating the expected injection target point based on spatial attitude data and the geometric parameters corresponding to the styling needle model. The expected injection target point is the most suitable injection point, and the most suitable injection point is automatically adjusted according to the styling needle model.

[0040] The "dynamic calculation" step specifically includes: Based on spatial attitude data, the theoretical contact area between the working surface of the bur and the tooth surface is determined; the position covering the theoretical contact area and biased towards the distal center of the dental pulp is taken as the expected injection target point.

[0041] Cooling control methods also include: Real-time monitoring of the temperature of tooth structure or the working end of the bur; Based on the comparison between the monitored temperature and a preset threshold, the coolant flow rate or the calculated weight of the expected spray target point is dynamically adjusted. This method dynamically and automatically adjusts the spray position or spray volume according to the temperature, achieving the best cooling effect with the minimum coolant volume or the most suitable spray angle.

[0042] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A two-hole water jet dental handpiece with an upward angle, characterized in that, The machine head includes a connecting section (110), a transition section (120), and a head body (130) connected in sequence. The head body (130) is equipped with a needle. The front end of the head is provided with two water spray holes (141). The front end of the head is also provided with a water inlet pipe (160). Both water spray holes (141) are connected to the water inlet pipe (160). The outlet of the water spray hole (141) is located at the front end of the head and is inclined toward the axis of the head body (130) so that the water discharge trajectory of the water spray hole (141) can intersect with the needle.

2. A two-hole water jet dental handpiece with an elevation angle according to claim 1, characterized in that: The water discharge trajectory of the two water jets (141) can intersect with the two sides of the needle.

3. A two-hole water jet dental handpiece with an elevation angle according to claim 1, characterized in that: The machine head body (130) is provided with a water spray seat (150), and the water spray seat (150) is provided with a plurality of spray holes (151) at an circumferential interval. The needle extends out from the water spray seat (150) and is located at the center of the water spray seat (150).

4. A two-hole water jet dental handpiece with an elevation angle according to claim 1, characterized in that: The machine head body (130) is provided with a front end bottom (140), and the front end bottom (140) of the machine head is provided with a light.

5. A two-hole water jet elevation angle dental handpiece according to claim 1, characterized in that: The outer surfaces of the connecting section (110), transition section (120) and head body (130) are all connected by a circular arc transition.

6. A two-hole water jet dental handpiece with an elevation angle according to claim 1, characterized in that: The connecting section (110) and the transition section (120) are connected at a first included angle (111), and the head body (130) and the transition section (120) are connected at a second included angle (121) with the head body tilted backward. The first included angle (111) is 135-180 degrees, and the second included angle (121) is 40-50 degrees.

7. A two-hole water jet dental handpiece with an elevation angle according to claim 1, characterized in that: The spray hole (141) is equipped with an angle-adjustable nozzle.

8. A two-hole water jet elevation angle dental handpiece according to claim 7, characterized in that, Also includes: An attitude sensing module is installed inside the nose cone body to detect the spatial attitude of the nose cone body (130) in real time and generate attitude data. The control module is communicatively connected to the attitude sensing module and is used to receive the attitude data and generate control signals according to a preset cooling model. An angle adjustment mechanism is located inside the head body (130) and is connected to the nozzle drive. It is used to receive the control signal from the control module and drive the spray axis of the nozzle to deflect so that the coolant is focused on the contact area between the needle and the tooth.

9. A two-hole water jet elevation angle dental handpiece according to claim 8, characterized in that, The angle adjustment mechanism includes: A piezoelectric ceramic actuator is electrically connected to the control module; A miniature universal drive assembly is connected between the output end of the piezoelectric ceramic actuator and the nozzle, for converting the deformation of the piezoelectric ceramic actuator into angular deflection of the nozzle in at least one direction.

10. A method for controlling cooling, characterized in that, The method, applied to a two-hole water jet elevation dental handpiece as described in any one of claims 8 to 9, comprises: Real-time acquisition of spatial orientation data of the dental handpiece head body (130); Based on the spatial attitude data, the expected injection target point of the coolant in the current state is dynamically calculated; Generate a drive command corresponding to the expected spray target point to control the angle adjustment mechanism to adjust the spray angle of the spray hole (141).

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