Patent Description:
The present disclosure claims the priority to the <CIT> with the Chinese Patent Office, entitled "Root Canal Treatment Device".

The present disclosure relates to the technical field of dental treatment instruments, and particularly to a root canal treatment device.

People's tooth includes a dental pulp cavity, and also includes <NUM>-<NUM> root canals, through which dental nerve and blood vessels for nutrient of nerve are led out. Infection in the dental pulp due to various conditions will cause functional damage to the tooth, and will cause pains and diseases such as jaw infection. Root canal treatment, also called as dental pulp treatment, is a treatment method for protecting affected teeth developed in recent years, and has good treatment and protection effects on dental problems such as chronic pulpitis, chronic periapical periodontitis, combined periodontal dental pulp lesion, and trauma tooth.

The root canal treatment includes several main treatment stages such as root canal preparation, disinfection, and root canal filling. The root canal preparation and disinfection are to mechanically cut and ream the root canal so as to obtain a required shape, and create a better spatial condition for subsequent root canal filling. After organic substances in the root canal and infected tissues (bacteria) of the root canal are removed by rinsing, and root canal debridement is completed, a drug material is filled in the root canal, so that the filled drug material is attached to a root canal wall.

In the prior art, positive pressure rinsing of the root canal can hardly ensure sufficient cleaning of a lower end of the root canal, thus a part of organic substances and infected tissues at the lower end of the root canal can hardly be removed sufficiently, and the root canal cleaning time is too long, and the patient opens his/her mouth for a long time, then the suffering of the patient is prolonged, moreover, as the drug material filled into the root canal after the root canal cleaning is usually a pasty material formed by blending powder and water, the drug material will be inevitably mixed with air bubbles in the blending process. The method of vibration washing with an ultrasonic vibration washer has unfavorable effect of removing the air bubbles in the drug material, and the air bubbles mixed in the drug material will affect the attachment tightness of the drug material to the root canal wall. <CIT> and <CIT> disclose a root canal treatment device according to the preamble of claim <NUM>.

An objective of embodiments of the present disclosure is to provide a root canal treatment device, which can effectively reduce the time consumption of a washing process of root canal treatment, and improve the efficiency and effect of cleaning infected tissues and a drug liquid in the root canal.

An embodiment of the present disclosure provides a root canal treatment device, including a contra-angle hand-piece and a root canal file detachably connected to the contra-angle hand-piece, and further including a drive module in transmission connection with the root canal file, wherein the drive module includes a rotation driver and a vibration generator, the rotation driver is configured to drive the root canal file to rotate axially, and the vibration generator is configured to drive the root canal file to vibrate radially, wherein the root canal treatment device further includes a handle connected to the contra-angle hand-piece, the rotation driver is provided in the handle and the rotation driver drives the root canal file to rotate through the contra-angle hand-piece, the vibration generator is provided on the handle, and a vibration end of the vibration generator acts on the root canal file.

In an implementable mode of the embodiments of the present disclosure, the vibration generator is an ultrasonic transducer.

In an implementable mode of the embodiments of the present disclosure, the ultrasonic transducer includes a shell and a transducer body provided inside the shell, and the shell is integrally molded with the handle, alternatively, the shell and the handle are detachably connected through a threaded fastener or a clamping member.

In an implementable mode of the embodiments of the present disclosure, a vibration connector is further provided between the ultrasonic transducer and the root canal file, and the ultrasonic transducer is connected to the root canal file through the vibration connector.

In an implementable mode of the embodiments of the present disclosure, a vibration head is provided at one end of the vibration connector connected to the root canal file, and the vibration head is configured to have an end surface connected to the root canal file to be a concave arc surface.

In an implementable mode of the embodiments of the present disclosure, a diameter of the arc surface of the vibration head is greater than or equal to a diameter of the root canal file.

In an implementable mode of the embodiments of the present disclosure, the vibration connector includes a first connecting rod and a second connecting rod whose end portions are sleeved with each other, and a fastener sleeved on a sleeve end of the first connecting rod, and the fastener is configured to fix the sleeve end of the first connecting rod and the second connecting rod.

In an implementable mode of the embodiments of the present disclosure, the first connecting rod is configured to be detachably connected to a connecting seat at the other end connected to the root canal file, and a fixing member is arranged to penetrate the connecting seat and the first connecting rod.

In an implementable mode of the embodiments of the present disclosure, a nickel-titanium connecting rod is further provided between the ultrasonic transducer and the root canal file, and the ultrasonic transducer is connected to the root canal file through the nickel-titanium connecting rod.

In an implementable mode of the embodiments of the present disclosure, the vibration generator is a vibrator, the vibrator includes a plastic housing and a vibration motor provided in the plastic housing, and the vibrator is fixed on the contra-angle hand-piece through the plastic housing; and a vibration output end of the vibration motor is connected to a jacking block through an elastic member, and the jacking block is extended out of the plastic housing through an opening provided on the plastic housing, and abuts against the root canal file at a side wall of the root canal file.

In an implementable mode of the embodiments of the present disclosure, a hook portion is formed on the jacking block, and the hook portion is configured to be snapped with an inner wall of the opening of the plastic housing, so as to limit the length of the jacking block extended out of the opening.

In an implementable mode of the embodiments of the present disclosure, the vibrator further includes a power supply provided in the handle, and the power supply is electrically connected to the vibration motor through a wire, and is configured to supply power to the vibration motor.

In an implementable mode of the embodiments of the present disclosure, a vibration-absorbing rubber pad is provided on the plastic housing, and the plastic housing and the contra-angle hand-piece are fixedly snapped to each other through the vibration-absorbing rubber pad.

In an implementable mode of the embodiments of the present disclosure, the root canal treatment device further includes a controller, and the controller is electrically connected to the rotation driver and the vibration generator, respectively, and is configured to control the operation of the rotation driver and the vibration generator, respectively.

The root canal treatment device provided in the embodiments of the present disclosure includes the contra-angle hand-piece and the root canal file detachably connected to the contra-angle hand-piece, and further includes a drive module in transmission connection with the root canal file, the drive module includes the rotation driver and the vibration generator, the rotation driver is configured to drive the root canal file to rotate axially, so as to mechanically cut and ream the root canal, thus shaping the root canal, and the vibration generator is configured to drive the root canal file to vibrate radially. Vibration of the root canal file at a specific frequency can sufficiently activate the activity of the drug material filled in the root canal, especially in the process of filling the drug material into the root canal, the vibration provided by the vibration generator and the rotation of the root canal file that are carried out simultaneously can efficiently discharge the air bubbles in the drug material filled in the root canal, so that the drug material can be tightly filled into the root canal, thereby providing a better environment for subsequent root canal treatment, improving the effect of root canal treatment, and relieving the patients' pain.

In order to more clearly illustrate technical solutions of embodiments of the present disclosure, drawings required for use in the embodiments of the present disclosure will be described briefly below. It should be understood that the drawings below are merely show some embodiments of the present disclosure, and therefore should not be considered as limitation to the scope. Those of ordinary skill in the art could also obtain other relevant drawings according to these drawings without any creative effort.

Reference signs: <NUM>-contra-angle hand-piece; <NUM>-root canal file; <NUM>-drive module; <NUM>-rotation driver; <NUM>-vibration generator; <NUM>-shell; <NUM>-transducer body; <NUM>-plastic housing; <NUM>-vibration motor; <NUM>-elastic member; <NUM>-jacking block; <NUM>-hook portion; <NUM>-vibration-absorbing rubber pad; <NUM>-handle; <NUM>-vibration connector; <NUM>-vibration head; <NUM>-first connecting rod; <NUM>-second connecting rod; <NUM>-fastener; <NUM>-connecting seat; <NUM>-fixing member; <NUM>-controller.

Below, the technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure.

In the description of the present disclosure, it should be noted that orientation or positional relationships indicated by terms such as "inner" and "outer" are based on orientation or positional relationships as shown in the drawings, or orientation or positional relationships of a product of the present disclosure when being conventionally placed in use, merely for facilitating describing the present disclosure and simplifying the description, rather than indicating or suggesting that related devices or elements have to be in the specific orientation or configured and operated in a specific orientation, therefore, they should not be construed as limitation to the present disclosure. Besides, terms such as "first" and "second" are merely used for distinctive description, but should not be construed as indicating or implying importance in the relativity.

It also needs to be indicated that unless otherwise specified and defined explicitly, terms "provide" and "connect" should be construed in a broad sense. For example, it may be a fixed connection, and also may be a detachable connection, or an integrated connection; it may be a direct connection, an indirect connection through an intermediate medium, or inner communication between two elements. For a person ordinarily skilled in the art, specific meanings of the above-mentioned terms in the present disclosure could be understood according to specific circumstances.

In the process of performing the tooth root canal treatment surgery, the root canal first needs to be subjected to preliminary shaping and vibration-washing cleaning. The preliminary shaping aims at providing an accurate shaping effect, and ensuring an operation space for subsequent processing. The preliminary shaping of the root canal is achieved mainly by grinding an inner wall of the root canal by rotating a root canal file in the root canal at high speed. The vibration-washing cleaning aims at cleaning original pathological tissues, bacteria and other substances in the root canal. Generally, the root canal is continuously rinsed by means of pressurization, but it is difficult to effectively clean a lower section of the root canal, moreover, the existing file needle of the root canal vibration-washing device is generally a stainless steel or titanium alloy file needle, and the file needle of these materials has a relatively hard texture, and usually can only effectively clean and wash a straight root canal or middle and lower parts of a curved root canal, but have unfavorable cleaning effect on a root tip part of complex curved root canals. If a positive pressure and a negative pressure are used in conjunction for rinsing, structural complexity and device costs will be increased. It is also possible to effectively remove air bubbles in the filled drug material through the acoustic streaming effect and the cavitation effect in a manner of replacing an operation device and making the file needle in the device vibrate in the root canal at ultrasonic frequency. However, in this manner, the operation device needs to be replaced multiple times, the above processes in the root canal treatment usually need to be alternately carried out according to needs of state of illness, then frequent replacement of the treatment operation devices makes the operation inconvenient, and the surgery efficiency is low.

On this basis, an embodiment of the present disclosure provides a root canal treatment device. <FIG> is a first structural schematic view of a root canal treatment device provided in some embodiments of the present disclosure. As shown in <FIG>, the root canal treatment device provided in an embodiment of the present disclosure includes a contra-angle hand-piece <NUM> and a root canal file <NUM> detachably connected to the contra-angle hand-piece <NUM>, and further includes a drive module <NUM> in transmission connection with the root canal file <NUM>, the drive module <NUM> includes a rotation driver <NUM> (not shown in <FIG>) and a vibration generator <NUM>, the rotation driver <NUM> is configured to drive the root canal file <NUM> to rotate axially, and the vibration generator <NUM> is configured to drive the root canal file <NUM> to vibrate radially.

As shown in <FIG>, in the root canal treatment device provided in an embodiment of the present disclosure, the contra-angle hand-piece <NUM> is configured to be provided on a handle member, and necessary circuit connection is carried out. By operating and controlling the operation of the rotation driver <NUM> and the vibration generator <NUM> in the drive module <NUM>, the root canal file <NUM> is allowed to form a corresponding operation mode, so as to perform corresponding operations on the root canal, respectively. In the above, the rotation driver <NUM> is configured to drive the root canal file <NUM> to rotate, a head portion of the root canal file <NUM> is a pointed end, and is configured to extend into the interior of the root canal, and when the root canal file <NUM> rotates in a self-rotating manner at a certain speed, an inner wall of the root canal where a side wall of the root canal file <NUM> touches can form a desired shape through the grinding of the root canal file <NUM>. Moreover, in the process of injecting a solution such as sodium hypochlorite into the root canal to wash the root canal, and in the process of filling the root canal with a pasty filling material after the washing, the rotary action of the rotation driver <NUM> is required to drive the root canal file <NUM> to rotate, to realize sufficient vibration washing and filling. Generally, the pasty filling material is prepared by mixing pharmaceutical powder, for example, bioceramic or mineral trioxide aggregate with water, and in the preparation process of the pasty filling material, it is inevitable that air will be mixed in to form air bubbles, and when the pasty filling material is filled into the root canal, it is also desirable to remove these air bubbles as much as possible, so that the drug material can be filled as tightly in the root canal as possible. In this condition, when the root canal file <NUM> is rotating, the vibration generator <NUM> is controlled to drive the root canal file <NUM> to vibrate at a pre-set frequency along a radial direction of the root canal file <NUM>. The rotation of the root canal file <NUM> in combination with the vibration can help stimulate the activity of the filled drug, and quickly and efficiently discharge the air bubbles. Alternatively, the vibration generator <NUM> can be separately controlled to drive the root canal file <NUM> to vibrate in the process of root canal washing or root canal filling, so that the operation modes of the root canal file <NUM> are diversified, the operation inconvenience caused by replacement of operation devices during root canal treatment surgery is reduced, the requirements of various steps of root canal treatment can be met, and the root canal treatment efficiency and effect can be effectively improved.

It should be noted that, firstly, as the rotation driver <NUM> is usually provided in the contra-angle hand-piece <NUM>, the position and structure of the rotation driver <NUM> are not shown in <FIG>, for example, the rotation driver <NUM> may be a rotary motor, and an output end of the rotary motor acts on a rotating shaft of the head portion of the contra-angle hand-piece <NUM>, the root canal file <NUM> is driven to rotate by the rotating shaft, wherein the rotation may be one-way rotation or reciprocating rotation, and the rotation speed may be set as <NUM>-<NUM> rpm according to needs. No specific limitation is provided in the present embodiment, and a person skilled in the art could perform corresponding configuration and operations as required.

Secondly, a specific implementation structure form of the vibration generator <NUM> is not specifically limited in the embodiments of the present disclosure, and the vibration generator <NUM>, as a part of the drive module <NUM>, is configured to act on the root canal file <NUM>, so that the root canal file <NUM> is driven to vibrate radially. Moreover, as it is a surgical operation applied to the root canal in the human oral cavity, the vibration output by the vibration generator <NUM> generally has a large frequency, and small amplitude, mainly for the purpose of helping cleaning in the root canal and activation of the drug liquid in the process of root canal treatment. The ranges of amplitude and frequency of the vibration are not specifically limited in the embodiments of the present disclosure, a person skilled in the art could perform corresponding configuration and operations according to actual operation requirements on the basis that the above purpose can be satisfied.

The root canal file <NUM> is configured to extend into the dental root canal to rotate or further perform vibration grinding, for example, the root canal file <NUM> is made of a nickel-titanium alloy material. The nickel-titanium alloy has relatively soft texture and good flexibility, when the nickel-titanium alloy material is processed into the root canal file <NUM>, the root canal file <NUM> extends into a root canal that may be in an irregular shape, and the root canal file <NUM> made of nickel-titanium alloy can be deformed to a certain extent so as to be adapted to an actual shape of the root canal, thus, the root canal file <NUM> can be extended into a deep part of the root canal, realizing a better shaping and cleaning effect of the root canal.

Moreover, in <FIG>, providing the vibration generator <NUM> on an outer wall of the contra-angle hand-piece <NUM> is merely an exemplary structural representation, and this is not specifically limited in the embodiments of the present disclosure, for example, the vibration generator may also be provided in the contra-angle hand-piece <NUM> or on a structure such as the handle member.

The root canal file <NUM> is detachably connected to the contra-angle hand-piece <NUM>, wherein the detachable connection manner between the root canal file <NUM> and the contra-angle hand-piece <NUM> may include magnetic attraction, snap-fit arrangement and/or threaded fastener connection, etc. As mounting different operation heads at an end portion of the contra-angle hand-piece <NUM> can correspondingly allow various related operations of dental surgery, the detachable connection manner facilitates replacement and use of the operation heads of the root canal treatment device in the embodiments of the present disclosure in use.

An root canal treatment device provided in an embodiment of the present disclosure includes the contra-angle hand-piece <NUM> and the root canal file <NUM> detachably connected to the contra-angle hand-piece <NUM>, and further includes the drive module <NUM> in transmission connection with the root canal file <NUM>, the drive module <NUM> includes a rotation driver <NUM> and the vibration generator <NUM>, the rotation driver <NUM> is configured to drive the root canal file <NUM> to rotate axially to mechanically cut and ream the root canal, so as to shape the root canal, and the vibration generator <NUM> is configured to drive the root canal file <NUM> to vibrate radially. Vibration of the root canal file <NUM> at a specific frequency can make the drug liquid filled in the root canal more tightly, especially in the process of washing the root canal to discharge the drug liquid, the rotation and the vibration of the root canal file <NUM> carried out simultaneously can efficiently discharge the air bubbles in the drug filled in the root canal, so that the drug liquid is tightly filled into the root canal, thereby providing a better environment for subsequent root canal treatment, improving the effect of root canal treatment, and relieving the patients' pain.

<FIG> is a second structural schematic view of a root canal treatment device provided in some embodiments of the present disclosure. As shown in <FIG>, optionally, the root canal treatment device further includes a handle <NUM> connected to the contra-angle hand-piece <NUM>, the rotation driver <NUM> is provided in the handle <NUM> and the rotation driver <NUM> drives the root canal file <NUM> to rotate through the contra-angle hand-piece <NUM>. The vibration generator <NUM> is provided on the handle <NUM>, and a vibration end of the vibration generator <NUM> acts on the root canal file <NUM>.

The root canal treatment device generally includes the handle <NUM> connected to the contra-angle hand-piece <NUM>, the handle <NUM> usually adopts a profile structure facilitating hand-held operation, all the wiring and functional devices required in the root canal treatment device are provided in the handle <NUM>, and corresponding control keys are provided on the handle <NUM>, then during surgery, the root canal treatment device can be made to perform corresponding operations by manipulating corresponding control keys on the handle <NUM>, thus, the operation of the root canal treatment device of the embodiments of the present disclosure is simplified as much as possible, and the operation is made more convenient.

In the root canal treatment device provided with the handle <NUM>, both the rotation driver <NUM> and the vibration generator <NUM> in the drive module <NUM> are provided at the handle <NUM>, wherein the rotation driver <NUM> is provided inside a hollow structure of the handle <NUM>, and an output end of the rotation driver <NUM> is transmitted to the rotating shaft in the contra-angle hand-piece <NUM>, so as to drive the root canal file <NUM> to rotate, the vibration generator <NUM> is provided on the handle <NUM>, and a vibration end of the vibration generator <NUM> directly acts on the root canal file <NUM>, so as to precisely realize the drive of vibration.

Exemplarily, as shown in <FIG>, in an implementable mode of the embodiments of the present disclosure, the vibration generator <NUM> is an ultrasonic transducer.

The ultrasonic transducer is a device converting electromagnetic energy into mechanical energy (acoustic energy), and is generally made of a piezoelectric ceramic or other magnetostrictive materials, and the ultrasonic vibration output by the ultrasonic transducer can continuously output vibration with an amplitude of <NUM>-<NUM> microns at a frequency of <NUM>-<NUM>. In the present embodiment, the vibration generator <NUM> is an ultrasonic transducer, by which mechanical energy for vibration of the root canal file <NUM> is provided. The ultrasonic transducer is stable in operation, has a dimension that can be matched with the root canal treatment device of the embodiments of the present disclosure, and is a preferred implementation form of the vibration generator <NUM>.

Specifically, <FIG> is a structural schematic view of the vibration generator, being an ultrasonic transducer, in the root canal treatment device in an embodiment of the present disclosure. In an implementable mode of an embodiment of the present disclosure, as shown in <FIG>, the ultrasonic transducer includes a shell <NUM> and a transducer body <NUM> provided inside the shell <NUM>, and the shell <NUM> is integrally molded with the handle <NUM>.

The shell <NUM> of the ultrasonic transducer and the handle <NUM> are integrally molded, for example, the shell <NUM> and the handle <NUM> are both made of a plastic material, and are molded into one piece by injection molding, or if the shell <NUM> and the handle <NUM> are made of a metal material, the two are connected into one piece by means of welding, etc. The connection mode of integral molding makes the handle <NUM> and the shell <NUM> of the ultrasonic transducer have better structural stability therebetween. When the ultrasonic transducer is started and generates vibration, the integrally molded structure is unlikely to have the problem of cracking or breaking, and the transmission loss of vibration is also small.

For another example, the shell <NUM> and the handle <NUM> further may be detachably connected through a threaded fastener or a clamping member. That is, the shell <NUM> and the handle <NUM> are in separate housing structures, and the two are detachably connected, wherein for the detachable connection method, a threaded fastener may be selected for threaded connection according to needs, and fixing by means of threaded connection is relatively stable. Alternatively, an interference fit manner is selected for snapping, a snap-fit connection manner is selected for snapping, etc. The snapping mode makes the replacement more convenient and quick. Alternatively, other detachable connection manners may also be used. In summary, the detachable connection manner between the shell <NUM> and the handle <NUM> facilitates the disassembly and adjustment of the vibration generator <NUM>, resulting in convenient use.

<FIG> is a structural schematic view of connecting the ultrasonic transducer and the root canal file through a vibration connector in the root canal treatment device provided in some embodiments of the present disclosure. As shown in <FIG>, in an implementable mode of the embodiments of the present disclosure, a vibration connector <NUM> is further provided between the ultrasonic transducer and the root canal file <NUM>, and the ultrasonic transducer is connected to the root canal file <NUM> through the vibration connector <NUM>.

As the ultrasonic transducer is provided on the handle <NUM>, and has a certain distance from the root canal file <NUM>, in order to improve the transmission efficiency of the vibration of the ultrasonic transducer, and ensure a parameter requirement of the vibration in the transmission process of vibration, the vibration connector <NUM> is provided between the ultrasonic transducer and the root canal file <NUM>, and the vibration connector <NUM> is configured to transmit the vibration output from the ultrasonic transducer to the root canal file <NUM> and act directly on the root canal file <NUM>. Generally, in order to effectively transmit the vibration of the ultrasonic transducer to the root canal file <NUM>, the vibration connector <NUM> is made of a hard material. However, considering that the vibration directly acts on the root canal file <NUM>, in order to avoid damage to the root canal file <NUM> by the vibration acting on the root canal file <NUM> as far as possible, a corresponding protection structure can be provided at one end of the vibration connector <NUM> acting on the root canal file <NUM>. The protection structure used in the embodiments of the present disclosure is not specifically limited, for example, in terms of structure, an action surface as large as possible with the root canal file <NUM> may be provided, and an action surface fitted with the structure of the root canal file <NUM> may be provided, and in terms of material, the action surface also can be made of a material with a certain buffer capacity. Moreover, as the contra-angle hand-piece <NUM> usually has a certain bending angle, the vibration of the ultrasonic transducer provided on the handle <NUM> is transmitted to the root canal file <NUM> through the vibration connector <NUM> to make the root canal file <NUM> vibrate radially, the vibration connector <NUM> can also be provided to have a matched bending form, thereby ensuring accurate transmission of the vibration force as much as possible.

<FIG> is a first structural schematic view of the vibration connector in the root canal treatment device provided in some embodiments of the present disclosure. As shown in <FIG>, in an implementable mode of the embodiments of the present disclosure, a vibration head <NUM> is provided at one end of the vibration connector <NUM> connected to the root canal file <NUM>, and the vibration head <NUM> is configured to have an end surface connected to the root canal file <NUM> to be a concave arc surface.

The root canal file <NUM> is usually in a cylindrical shape and has an operation end with a side surface being a rough surface facilitating grinding, and an end portion being in a needle tip structure, correspondingly, the vibration head <NUM> of the vibration connector <NUM> that needs to directly act on a side surface of the root canal file <NUM> to transmit the vibration has an end surface connected to the root canal file <NUM> being a concave arc surface, in this way, when transmitting vibration, a contact surface between the two is relatively matched, and a contact area is relatively large, preventing the transmitted vibration from acting on a very small area, thus reducing vibration strain of the root canal file <NUM>, and improving the service life of the root canal file <NUM>.

Specifically, a diameter of the arc surface of the vibration head <NUM> is greater than or equal to a diameter of the root canal file <NUM>. In this way, when the vibration head <NUM> transmits a vibration force, the arc surface can wrap the root canal file <NUM> partially or in half, thereby more effectively and accurately transmitting the vibration force.

<FIG> is a second structural schematic view of the vibration connector in the root canal treatment device provided in some embodiments of the present disclosure. In an implementable mode of the embodiments of the present disclosure, as shown in <FIG>, the vibration connector <NUM> includes a first connecting rod <NUM> and a second connecting rod <NUM> whose end portions are sleeved with each other, a fastener <NUM> sleeved on a sleeve end of the first connecting rod <NUM>, and the fastener <NUM> is configured to fix the sleeve end of the first connecting rod <NUM> and the second connecting rod <NUM>.

In order to improve the practicability of the vibration connector <NUM> for root canal treatment devices of different models, and meet the requirement that the dimension may need to be adjusted when the root canal treatment device is used to perform a surgical operation, the vibration connector <NUM> may be configured in a two-section adjustable structure. The first connecting rod <NUM> and the second connecting rod <NUM> are sleeved with each other by end portions, and as shown in <FIG>, the first connecting rod <NUM> and the second connecting rod <NUM> are sleeved by screw threads cooperating with each other, thus a telescopic length of the vibration connector <NUM> can be adjusted by changing a total length of the first connecting rod <NUM> and the second connecting rod <NUM>. After the length is adjusted to an appropriate length, the fastener <NUM> is sleeved on sleeve end of the first connecting rod <NUM> and the second connecting rod <NUM> for fixation, which not only can adjust the length, but also can facilitate the fixation, wherein the vibration head <NUM> is provided at the end portion of the first connecting rod <NUM> of the vibration connector <NUM> close to the root canal file <NUM>. For example, when the root canal treatment device of the embodiments of the present disclosure is used for other treatments, the vibration connector <NUM> may not need to be integrally disassembled, and it is only necessary to remove the first connecting rod <NUM> after the fastener <NUM> is loosened.

<FIG> is a third structural schematic view of the vibration connector in the root canal treatment device provided in some embodiments of the present disclosure. In an implementable mode of the embodiments of the present disclosure, as shown in <FIG>, the first connecting rod <NUM> is configured to be detachably connected to a connecting seat <NUM> at the other end connected to the root canal file <NUM>, and a fixing member <NUM> is arranged to penetrate the connecting seat <NUM> and the first connecting rod <NUM>.

The first connecting rod <NUM> is further detachably provided with the connecting seat <NUM>, the first connecting rod <NUM> and the connecting seat <NUM> are fixed through the fixing member <NUM>, and the first connecting rod <NUM> and the connecting seat <NUM> are also sleeved with each other and have an adjustable distance (length). As shown in <FIG>, an end portion of the first connecting rod <NUM> can be configured in a through-groove structure, and correspondingly, the connecting seat <NUM> includes a portion extended into the through groove, and by adjusting the length of the portion of the connecting seat <NUM> extended into the through groove, the total length between the first connecting rod <NUM> and the connecting seat <NUM> can be adjusted, and then the total length of the vibration connector <NUM> can also be adjusted. As shown in <FIG>, the vibration connector <NUM> is generally matched with a bending structure formed by the contra-angle hand-piece <NUM>, therefore, two sides of the vibration connector <NUM> are each provided with a segmented structure capable of being adjusted in length. It is also possible to adjust the transmission direction of vibration to some extent while the total length of the vibration connector <NUM> can be adjusted, thereby providing a structure that is more adaptable to various clinical needs. Likewise, when the root canal treatment device of the present embodiment is used for performing other treatments, it may be not necessary to disassemble the whole vibration connector <NUM>, and it only needs to remove the first connecting rod <NUM> after the fastener <NUM> is loosened.

In an implementable mode of the embodiments of the present disclosure, a nickel-titanium connecting rod is further provided between the ultrasonic transducer and the root canal file <NUM>, and the ultrasonic transducer is connected to the root canal file <NUM> through the nickel-titanium connecting rod.

The nickel-titanium material has relatively soft texture and good flexibility. The nickel-titanium connecting rod prepared from the nickel-titanium material through a specific heat treatment process, having a certain degree of plastic deformation capacity, and provided between the ultrasonic transducer and the root canal file <NUM>, can effectively transmit a vibration force provided by the ultrasonic transducer in a state abutting against the root canal file <NUM>, and the angle and connection position of the nickel-titanium connecting rod and the tightness of the nickel-titanium connecting rod against the root canal file <NUM> can be manually bent and adjusted according to clinical requirements. In the embodiments of the present disclosure, the nickel-titanium connecting rod is not shown in the drawings, and for the shape and structure thereof, reference can be made to the vibration connector <NUM> integrally provided as shown in <FIG>, but the foregoing nickel-titanium material is selected to realize the foregoing functions.

<FIG> is a structural schematic view of the vibration generator, being a vibrator, in the root canal treatment device provided in some embodiments of the present disclosure. <FIG> is a partially enlarged view of <FIG>. In an implementable mode of the embodiments of the present disclosure, as shown in <FIG> and <FIG>, the vibration generator <NUM> is a vibrator, the vibrator includes a plastic housing <NUM> and a vibration motor <NUM> provided in the plastic housing <NUM>, the vibrator is fixed on the contra-angle hand-piece <NUM> through the plastic housing <NUM>; and a vibration output end of the vibration motor <NUM> is connected to a jacking block <NUM> through an elastic member <NUM>, and the jacking block <NUM> is extended out of the plastic housing <NUM> through an opening provided on the plastic housing <NUM>, and abuts against the root canal file <NUM> at a side wall of the root canal file <NUM>.

As shown in <FIG>, the vibration generator <NUM> is a vibrator, and power of vibration is provided by the vibration motor <NUM>. The vibration motor <NUM> is provided in the plastic housing <NUM>. The plastic housing <NUM> has a certain deformation capacity, and the plastic housing <NUM> is fixed on the contra-angle hand-piece <NUM>. For example, the vibration motor <NUM> and the plastic housing <NUM> can be bonded with glue, or fixed in a snapping manner by interference fit, the vibration force transmitted by the vibration output end of the vibration motor <NUM> is transmitted to the jacking block <NUM> through the plastic housing <NUM>, the jacking block <NUM> is extended out of the plastic housing <NUM> through an opening provided on the plastic housing <NUM>, and abuts against the side wall of the root canal file <NUM>. The elastic member <NUM> may be a spring as shown in <FIG>, or other elastic connecting members. By providing the elastic member <NUM>, the vibration force transmitted to the root canal file <NUM> can be buffered to a certain extent, and the root canal file <NUM> is effectively protected while transmitting the vibration force.

<FIG> is a partially enlarged view of region A in <FIG>. As shown in <FIG>, in order to avoid a risk that the jacking block <NUM> may be popped out of the plastic housing <NUM> when the vibration force of the vibration motor <NUM> is too large, a hook portion <NUM> is formed on the jacking block <NUM>, and the hook portion <NUM> is configured to be snapped with an inner wall of the opening of the plastic housing <NUM>, so as to limit the length of the jacking block <NUM> extended out of the opening. In this way, the jacking block <NUM> is snapped with the inner wall of the opening of the plastic housing <NUM> through the hook portion <NUM> at a position of limit length extended out of the plastic housing <NUM> for position limiting, thus ensuring that the jacking block <NUM> will not come out from the plastic housing <NUM>, and ensuring safety of operation.

As shown in <FIG>, in an implementable mode of the embodiments of the present disclosure, a vibration-absorbing rubber pad <NUM> is provided on the plastic housing <NUM>, and the plastic housing <NUM> and the contra-angle hand-piece <NUM> are snapped and fixed through the vibration-absorbing rubber pad <NUM>.

As shown in <FIG>, in order to avoid the vibration force of the vibration motor <NUM> from being directly transmitted to the contra-angle hand-piece <NUM> connected to the plastic housing <NUM>, which, on one hand, leads to an ineffective loss of vibration force, and on the other hand, also makes the hand holding the root canal treatment device of the embodiments of the present disclosure bear unfavorable vibration feeling during operation, the plastic housing <NUM> is further provided with the vibration-absorbing rubber pad <NUM> for blocking the transmission of the vibration force on the plastic housing <NUM> to the contra-angle hand-piece <NUM>. In the above, neither the set dimension of the vibration-absorbing rubber pad <NUM> on the plastic housing <NUM> nor the set thickness of the vibration-absorbing rubber pad <NUM> is specifically limited in the embodiments of the present disclosure, and a person skilled in the art could correspondingly configure them according to requirements.

In an implementable mode of the embodiments of the present disclosure, the vibrator further includes a power supply provided in the handle <NUM>, and the power supply is electrically connected to the vibration motor <NUM> through a wire, and is configured to supply power to the vibration motor <NUM>.

The power supply is provided in the handle <NUM>, and the power supply supplies power to the vibration motor <NUM> via the wire, so that the root canal treatment device in the embodiments of the present disclosure can be taken and moved more conveniently when in use, wherein when the rotation driver <NUM> is a motor, the power supply can also supply power to the motor, thus avoiding the connection of a plurality of power supplies to cause the dimension of the root canal treatment device in the embodiments of the present disclosure to be large, redundancy of the arrangement of internal components, and incompactness of the structure.

It should be noted that, in the embodiments of the present disclosure, the form of the power supply is not specifically limited, either, for example, the power supply may be mains alternating current connected through an interface, a direct current, or an electricity storage and output component such as a storage battery.

<FIG> is a schematic view of a control relation of the root canal treatment device provided in some embodiments of the present disclosure. In an implementable mode of the embodiments of the present disclosure, as shown in <FIG>, the root canal treatment device of the embodiments of the present disclosure further includes a controller <NUM>, wherein the controller <NUM> is electrically connected to the rotation driver <NUM> and the vibration generator <NUM>, respectively, and is configured to control the operation of the rotation driver <NUM> and the vibration generator <NUM>, respectively.

In this way, when the root canal treatment device of the embodiments of the present disclosure further includes a controller <NUM>, and the controller <NUM> is electrically connected to the rotation driver <NUM> and the vibration generator <NUM>, respectively, the controller <NUM> can control the operation of the rotation driver <NUM> and the vibration generator <NUM>, respectively. Buttons corresponding to different control signals in the controller <NUM> may be provided on the handle <NUM>, for example, a rotation start key, a vibration start key, and a rotation vibration key are separately provided on the handle <NUM>. When the root canal treatment device of the embodiments of the present disclosure is used to perform the root canal treatment operation, the operator only needs to press the corresponding buttons on the handle <NUM> at different treatment stages, to only make the rotation driver <NUM> of the root canal treatment device start to operate, presenting an operation that that the root canal file <NUM> only rotates to perform the root canal cleaning and shaping, or to only make the vibration generator <NUM> of the root canal treatment device operate, presenting an operation that the root canal file <NUM> only vibrates to sufficiently activate the drug liquid filled in the root canal, or to make the rotation driver <NUM> and the vibration generator <NUM> in the root canal treatment device operate simultaneously, presenting a state that the root canal file <NUM> rotates and vibrates simultaneously, and sufficiently cleaning and discharging the air bubbles generated by the drug liquid filled in the root canal.

On this basis, it should be noted that the root canal treatment device of the embodiments of the present disclosure can further include a root canal length measurement sensor, configured to measure the length of the root canal currently being treated. When the root canal file <NUM> is rotated and moved to an apical stop, the root canal length measurement sensor senses a corresponding signal and transmits the signal to the controller <NUM>, and the controller <NUM> sends a corresponding reverse, stop or deceleration signal to the rotation driver <NUM> according to a detection signal of the root canal length measurement sensor.

Claim 1:
A root canal treatment device, comprising
a contra-angle hand-piece (<NUM>) and
a root canal file (<NUM>) detachably connected to the contra-angle hand-piece (<NUM>); and further comprising
a drive module (<NUM>) in transmission connection with the root canal file (<NUM>), wherein
the drive module (<NUM>) comprises a rotation driver (<NUM>) and a vibration generator (<NUM>),
the rotation driver (<NUM>) is configured to drive the root canal file (<NUM>) to rotate axially, and
the vibration generator (<NUM>) is configured to drive the root canal file (<NUM>) to vibrate radially;
wherein,
the canal treatment device further comprising
a handle (<NUM>) connected to the contra-angle hand-piece (<NUM>), wherein
the rotation driver (<NUM>) is provided in the handle (<NUM>) and
the rotation driver (<NUM>) drives the root canal file (<NUM>) to rotate through the contra-angle hand-piece (<NUM>),
characterized in that, the vibration generator (<NUM>) is provided on the handle (<NUM>), and
a vibration end of the vibration generator (<NUM>) acts on the root canal file (<NUM>).