A dental root canal treatment device

Abstract

The application discloses a kind of dental root canal treatment devices, including root canal file, telescopic shaft, driving device, lifting mechanism, pitch mechanism and telescopic driving piece;The pitch mechanism is used to adjust the pitch attitude of root canal file;Lifting mechanism is installed on the pitch mechanism, for the height of root canal file micro-adjustment;Telescopic shaft is installed on the lifting mechanism by support device;Driving device is connected with root canal file by telescopic shaft, and root canal treatment is carried out by the rotation of root canal file driven by telescopic shaft;Telescopic driving piece is used to drive the telescopic shaft to carry out the micro-adjustment of the position of root canal file in and out.It is installed on three-dimensional moving platform in the application, and after coarse adjustment is carried out by three-dimensional moving platform, the root canal file can also be micro-adjusted by the application, to be positioned in the oral cavity of patient quickly and accurately, and root canal treatment is facilitated.The success rate of root canal treatment is improved, treatment time is reduced, and the burden of doctors and patients is reduced.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to a dental root canal treatment device. Background Technology

[0002] Root canal treatment is the most common, effective, and comprehensive method for treating pulpitis and periapical periodontitis. Currently, the main steps of root canal treatment are: access cavity preparation, root canal preparation, root canal disinfection, and root canal filling. Among these, root canal preparation has always been a major challenge for clinicians.

[0003] Currently, the entire root canal treatment process is mainly completed manually in clinical practice. Within the confined space of the oral cavity, dentists rely on manual manipulation or rotating nickel-titanium instruments to prepare the root canals. Since teeth typically have multiple root canals, completing the preparation of all the root canals takes a considerable amount of time. During root canal treatment, dentists must maintain a fixed posture for extended periods, leading to significant workload, fatigue, and potential cervical and lumbar spine problems, while also causing pain for the patient.

[0004] Root canal preparation is highly dependent on the doctor's experience and skill level. Careless operation may lead to medical accidents such as broken root canal files or perforation. Inexperienced doctors may also cause incomplete root canal preparation, resulting in secondary infection.

[0005] In existing technologies, root canal treatment devices are typically mounted on multi-axis robotic arms or three-dimensional moving platforms. During actual use, these devices are inserted into the patient's mouth for positioning and treatment. However, this presents a problem: if the multi-axis robotic arm or platform moves too slowly, external positioning is time-consuming, resulting in low overall efficiency; conversely, if the movement is too fast, high-precision fine-tuning within the patient's mouth becomes difficult. Generally, only three fine-tuning movements—tilt, advance, and retraction—are sufficient to meet the patient's intraoral needs. Therefore, it is necessary to redesign the terminal part of the root canal treatment device in existing technologies to enable fine-tuning of the root canal file's position and orientation within the patient's mouth, allowing for rapid coarse adjustment followed by precise fine-tuning during treatment. Summary of the Invention

[0006] The purpose of this invention is to provide a dental root canal treatment device that solves the problem that the end of the root canal cannot be precisely micro-adjusted in the prior art.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows:

[0008] A dental root canal treatment device includes a root canal file, a telescopic shaft, a drive device, a lifting mechanism, a tilting mechanism, and a telescopic drive component;

[0009] The pitch mechanism is used to make fine adjustments to the pitch posture of the root canal file;

[0010] The lifting mechanism is mounted on the tilting mechanism and is used to make fine adjustments to the height of the root canal file;

[0011] The telescopic shaft is mounted on the lifting mechanism via a support device;

[0012] The drive device is connected to the root canal file via a telescopic shaft, and drives the root canal file to rotate to perform root canal treatment.

[0013] The telescopic drive is used to drive the telescopic shaft to make fine adjustments to the advance and retreat position of the root canal file.

[0014] In use, the pitch mechanism of this invention is mounted on a multi-axis robotic arm or a three-dimensional moving platform. The multi-axis robotic arm or three-dimensional moving platform quickly delivers the root canal file to the vicinity or inside the patient's oral cavity. Then, the pitch mechanism finely adjusts the pitch angle of the root canal file, the lifting mechanism finely adjusts the height of the root canal file, and the telescopic drive finely adjusts the forward and backward direction of the root canal file. This allows the root canal file to reach the tooth to be treated with high precision and speed without adjusting the external multi-axis robotic arm or three-dimensional moving platform, effectively improving the adjustment speed of the root canal file and avoiding damage to the patient's oral cavity caused by improper operation.

[0015] Compared with existing technologies, this invention allows for high-precision micro-adjustment of the posture and position of the root canal file before and during treatment using the root canal treatment device itself, eliminating the need to adjust an external three-dimensional moving platform or robotic arm. This improves operational efficiency and avoids damage to the patient's oral cavity caused by excessive adjustments made by the external three-dimensional moving platform. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of the root canal treatment device in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the lifting mechanism in an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the dental root canal treatment device in an embodiment of the present invention.

[0019] Figure 4 This is a top view of the root canal treatment device in an embodiment of the present invention.

[0020] Figure 5 This is a front view of the root canal treatment device in an embodiment of the present invention.

[0021] Figure 6 yes Figure 4 Sectional view of AA.

[0022] Figure 7 yes Figure 6 A magnified view of the left-middle section.

[0023] Figure 8 yes Figure 7 Schematic diagram B showing a partially enlarged view.

[0024] Figure 9 This is a three-dimensional schematic diagram of the end shell in an embodiment of the present invention.

[0025] Figure 10 This is a three-dimensional schematic diagram of the base bushing in an embodiment of the present invention.

[0026] Figure 11 This is a three-dimensional schematic diagram of the clamping base in a top view according to an embodiment of the present invention.

[0027] Figure 12 This is a three-dimensional schematic diagram of the clamping base in a bottom view in an embodiment of the present invention.

[0028] Figure 13 This is a three-dimensional schematic diagram of the clamping component in an embodiment of the present invention.

[0029] Figure 14 This is a three-dimensional schematic diagram of the root canal file in an embodiment of the present invention.

[0030] 100-Dental root canal treatment device, 110-Root canal file, 1101-Tail end, 1102-Slot, 1103-Limiting boss, 120-Telescopic shaft, 121-Splined shaft, 122-Splined bushing, 130-Telescopic drive component, 131-Rope drive base, 132-Rope drive guide sleeve, 133-Traction rope, 134-Rope winder, 1341-Drum, 1342-Servo motor, 135-Allowing groove, 136-Guide hole, 140-Drive device, 141-Root canal file motor, 142-Worm gear, 143- Worm gear, 150-Support device, 151-Splined shaft guide sleeve, 152-Vertical plate, 153-Horizontal plate, 154-Bearing, 155-Shaft hole, 160-Gear reversing mechanism, 161-End housing, 1611-First cylindrical housing, 1612-Guide block, 1613-Second cylindrical housing, 1614-Annular protrusion, 162-First bevel gear, 163-Second bevel gear, 164-Drive shaft, 165-Drive shaft sleeve, 166-Bearing, 167-Root canal file holder, 1671-Holding base, 16 711-Round hole, 16712-Non-round hole, 16713-Allowing groove, 1672-Bearing, 1673-Clamping mechanism, 16731-Clamping component, 167311-Cylindrical ring, 167312-Elastic sheet, 167313-Extrusion part, 167314-Protrusion, 16732-Fixed cover, 16733-Modible cover, 16734-Spring, 16735-Release post, 1674-Base bushing, 16741-Anti-rotation key, 16742-Allowing hole, 168-Bushing fastener, 1681 1682-First locking sleeve, 1683-Second locking sleeve, 1684-Limiting structure, 169-Camera, 170-Pitch mechanism, 171-Pitch motor, 172-Pitch base, 173-Pitch connector, 174-Pitch drive shaft, 175-Worm gear, 176-Worm, 180-Lifting mechanism, 181-Module bracket, 1811-Base plate, 1812-Vertical support plate, 1813-Top plate, 182-Slide table, 183-Lead screw, 184-Slide rail, 185-Motor, 200-Three-dimensional moving platform. 200-Rear tooth opener. Detailed Implementation

[0031] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0032] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] like Figure 1 As shown, the present invention provides a dental root canal treatment device 100, including a root canal file 110, a telescopic shaft 120, a drive device 140, a lifting mechanism 180, a pitching mechanism 170, and a telescopic drive component 130.

[0035] The pitch mechanism 170 is used to make fine adjustments to the pitch posture of the root canal file 110.

[0036] The lifting mechanism 180 is mounted on the pitch mechanism 170 and is used to make fine adjustments to the height of the root canal file 110.

[0037] The telescopic shaft 120 is mounted on the lifting mechanism 180 via a support device 150;

[0038] The drive device 140 is connected to the root canal file 110 via a telescopic shaft 120, and drives the root canal file 110 to rotate for root canal treatment via the telescopic shaft 120.

[0039] The telescopic drive 130 is used to drive the telescopic shaft 120 to perform fine adjustments to the forward and backward position of the root canal file 110.

[0040] In use, the pitch mechanism of this invention is mounted on a multi-axis robotic arm or a three-dimensional moving platform. The multi-axis robotic arm or three-dimensional moving platform quickly delivers the root canal file to the vicinity or inside the patient's oral cavity. Then, the pitch mechanism finely adjusts the pitch angle of the root canal file, the lifting mechanism finely adjusts the height of the root canal file, and the telescopic drive finely adjusts the forward and backward direction of the root canal file. This allows the root canal file to reach the tooth to be treated with high precision and speed without adjusting the external multi-axis robotic arm or three-dimensional moving platform, effectively improving the adjustment speed of the root canal file and avoiding damage to the patient's oral cavity caused by improper operation.

[0041] In some embodiments, such as Figure 1 As shown, the pitch mechanism 170 includes a pitch motor 171, a pitch base 172, and a pitch connector 173. The pitch connector 173 is mounted on the pitch base 172 via a pitch drive shaft 174, and the pitch drive shaft 174 is connected to the pitch motor 171 via a worm gear transmission mechanism.

[0042] The specific form and connection method of the pitch base 172 and the pitch connector 173 are not limited. As an example, for instance... Figure 1 As shown, the pitch base 172 is used to fix it on the three-dimensional moving platform or the multi-axis robotic arm, the pitch connector 173 is used to connect the lifting mechanism 180, the drive shaft is fixedly connected to the pitch connector 173, and the drive shaft is mounted on the pitch base 172 through bearings. The axis of the drive shaft is set horizontally and is also perpendicular to the axis of the telescopic shaft 120. When the drive shaft is driven to rotate by the pitch motor 171, the pitch movement can be realized.

[0043] As a preferred embodiment, such as Figure 1 As shown, the pitch motor 171 is connected to the drive shaft through a worm gear mechanism, which enables the pitch mechanism 170 to have a self-locking function. Specifically, the worm gear 175 is coaxially fixed with the pitch drive shaft 174, the worm 176 meshes with the worm gear 175, and the worm 176 is coaxially fixed with the output shaft of the pitch motor 171.

[0044] like Figure 2As shown, the lifting mechanism is a screw and nut mechanism. In some embodiments, the lifting device includes a module bracket 181, a slide table 182, a screw 183, a slide rail 184, and a motor 185. The module bracket 181 is composed of a base plate 1811, a vertical support plate 1812, and a top plate 1813 connected together. The two ends of the screw 183 are respectively mounted on the base plate 1811 and the top plate 1813 through bearings. The slide rail 184 is located on the vertical support plate 1812, and its upper and lower ends are respectively fixed on the base plate 1811 and the top plate 1813. The middle part of the slide table 182 is installed on the screw 183 through a threaded connection. The slide table 182 is also installed with the slide rail 184 through a groove (such as a dovetail groove). The motor 185 is fixed on the top plate 1813, and the motor shaft is connected to the screw 183. The motor 185 can make the screw 183 rotate, thereby driving the slider 352 to move up and down along the slide rail 184 to realize the lifting function.

[0045] In some embodiments, such as Figure 6 As shown, the telescopic shaft 120 includes a spline shaft 121 and a spline bushing 122 sleeved on the spline shaft 121. The spline shaft 121 and the spline bushing 122 are connected by ball joints, so that they can transmit rotational power and move axially relative to each other, thus realizing the telescopic function. It should be emphasized that this structure is only an example of the telescopic shaft 120, and other telescopic shaft 120 structures can also be used in this invention.

[0046] In some embodiments, such as Figure 5 and Figure 6 As shown, the drive device 140 includes a root canal file motor 141, a worm gear 142, and a worm 143. Specifically, the support device 150 includes a splined shaft guide sleeve 151, two vertical plates 152, and a horizontal plate 153. The two vertical plates 152 are fixedly connected by a horizontal plate to form a mounting bracket for the drive device 140 and the telescopic drive component 130. The mounting bracket is fixed on the splined shaft guide sleeve 151, and the splined shaft guide sleeve 151 is fixed on the slide table 182 of the lifting mechanism 180. The splined shaft guide sleeve 151... The part is provided with a shaft hole 155 for the spline shaft 121 to move; the spline bushing 122 is mounted on two vertical plates 152 through bearings 154, the worm gear 142 is coaxially fixed on the spline bushing 122 between the two vertical plates 152, the worm 143 is meshed with the worm gear 142, the worm 143 is coaxially fixed on the output shaft of the root canal file motor 141, the root canal file motor 141 is fixed on the horizontal plate, the root canal file motor 141 drives the spline bushing 122 to rotate through the worm gear mechanism, thereby driving the telescopic shaft 120 to rotate.

[0047] In some embodiments, such as Figure 6As shown, in order to facilitate root canal treatment operations using the root canal file 110, the axis of the root canal file 110 is set perpendicular to the telescopic shaft 120, and the root canal file 110 is connected to the telescopic shaft 120 through a gear reversing mechanism 160.

[0048] like Figures 3 to 14 As shown, the gear reversing mechanism 160 includes an end housing 161, a drive shaft 164, and a root canal file holder 167. The root canal file holder 167 is installed in the end housing 161 through a rotating pair (shaft-hole fit or bearing). The end housing 161 is connected to the telescopic drive 130, which drives the root canal file holder 167 to move in a telescopic motion following the telescopic shaft 120. The root canal file holder 167 itself is connected to the telescopic shaft 120 through a gear set for power transmission.

[0049] In some embodiments, such as Figures 7 to 9 As shown, the gear set is a bevel gear set. The end housing 161 includes a first cylindrical housing 1611 coaxially arranged with the root canal file 110 and a second cylindrical housing 1613 coaxially arranged with the telescopic shaft 120. The second cylindrical housing 1613 communicates with the first cylindrical housing 1611. The root canal file clamping member 167 is coaxially installed in the first cylindrical housing 1611 through a bearing. A first bevel gear 162 is provided on the outside of the root canal file clamping member 167.

[0050] The second cylindrical housing 1613 is provided with a fixed transmission shaft sleeve 165. The transmission shaft sleeve 165 is provided with a freely rotatable transmission shaft 164. One end of the transmission shaft 164 is fixedly connected to the telescopic shaft 120, and the other end is provided with a second bevel gear 163 that meshes with the first bevel gear 162. In some embodiments, the transmission shaft sleeve 165 and the second cylindrical housing 1613 are assembled in a fixed manner and locked by the shaft sleeve fixing member 168 to prevent the transmission shaft sleeve 165 from detaching from the second cylindrical housing 1613. Both ends of the transmission shaft 164 are installed in the transmission shaft sleeve 165 through bearings 166 to realize power transmission between the telescopic shaft 120 and the root canal file clamping member 167, but without exposing the telescopic shaft 120.

[0051] In some embodiments, such as Figure 7As shown, the bushing fixing member 168 includes a first locking sleeve 1681 and a second locking sleeve 1682. The first locking sleeve 1681 is sleeved on the outer end of the second cylindrical housing 1613 through a snap-fit ​​structure (such as an annular groove or an annular protrusion 1614). The first locking sleeve 1681 is provided with an internal thread. The second locking sleeve 1682 is tightened into the first locking sleeve 1681 through an external thread. A limiting structure 1613 (such as a boss or end limiter provided on the outside of the transmission shaft sleeve 165) is provided between the second locking sleeve 1682 and the transmission shaft sleeve 165 to prevent the transmission shaft sleeve 165 from slipping out.

[0052] In some embodiments, such as Figures 3 to 5 As shown, the telescopic drive component 130 is a rope-driven mechanism, including a rope drive base 131, a rope drive guide sleeve 132, a traction rope 133, and at least two rope winders 134. The rope drive guide sleeve 132 is fixed on the rope drive base 131, providing protection and isolation for the telescopic shaft 120 to prevent damage and injury.

[0053] The rope-driven base 131 is fixed to the support device 150, specifically to the vertical plate 152 at the left end of the support device 150; the end housing 161 is installed inside the rope-driven guide sleeve 132, and the lower end of the rope-driven guide sleeve 132 has an clearance groove 135 for adjusting the root canal file 110; at least one rope winder 134 is connected to the opposite side of the end housing 161 via a traction rope 133, and at least another rope winder 134 is connected to the opposite side of the end housing 161 via a traction rope 133. The synchronous and opposite movements of at least two rope winders 134 drive the end housing 161 and the root canal file 110 inside it to move axially along the telescopic shaft 120; as a specific embodiment, such as Figure 3 As shown, the present invention is provided with four rope winders 134. Each rope winder 134 includes a drum 1341 and a servo motor 1342 that drives the drum 1341 to move forward and backward. The upper two rope winders 134 are connected to the proximal end of the first cylindrical housing 1611 through traction ropes 133. The lower two rope winders 134 are connected to the first cylindrical housing 1611 after the traction ropes 133 pass around the guide hole 136 at the front end of the rope drive guide sleeve 132. The synchronous and opposite winding and unwinding of the traction ropes 133 by the upper and lower rope winders 134 drives the first cylindrical housing 1611 to move axially along the transmission shaft 164, so as to realize the fine adjustment of the root canal file 110 in advance and backward.

[0054] In some embodiments, such as Figure 7 and Figure 9As shown, the outer surface of the first cylindrical housing 1611 is configured to match the internal dimensions of the rope-driven guide sleeve 132, or a guide block 1612 is provided, so that a sliding guide is formed between the first cylindrical housing 1611 and the rope-driven guide sleeve 132, which supports the end housing 161 and the root canal file 110 in the vertical direction, so as to avoid the weight of the end housing 161 and the root canal file 110 from generating an excessive bending moment on the drive shaft 164.

[0055] like Figure 8 As shown, the root canal file clamping member 167 includes a columnar clamping base 1671 and a base sleeve 1674. The clamping base 1671 is rotatably and coaxially mounted in the base sleeve 1674 via a bearing 1672. The base sleeve 1674 is fixed in the first columnar housing 1611. The first bevel gear 162 is coaxially fixed outside the clamping base 1671. The base sleeve 1674 has a clearance hole on its side for the first bevel gear 162 to protrude. The root canal file 110 is coaxially mounted in the clamping base 1671 via a clamping mechanism 1673.

[0056] In some embodiments, the root canal file 110 is mounted within a clamping base 1671 via a keyway fit (not shown in the figures).

[0057] In other embodiments, such as Figures 8 to 14 As shown, the clamping mechanism 1673 includes a clamping member 16731, a fixed cover 16732, a movable cover 16733, and a spring 16734. The clamping member 16731 ​​includes a cylindrical ring 167311 and two axially extending elastic pieces 167312 disposed on the top of the cylindrical ring 167311. The two elastic pieces 167312 have protrusions 167314 on opposite sides to form a locking structure, and the tops of the two elastic pieces 167312 are inclined outward to both sides to form pressing parts 167313. The clamping base 1671 has an opening in the lower part for mounting the clamping member 16731. The 31 has a circular hole 167111, and the upper part of the clamping base 1671 has a non-circular hole 167112 (for example, a circular cross-section is formed by cutting off a part of it with a plane) and a relief groove 16713 for the elastic sheet 167312 to extend and move to both sides; the shape (cross-sectional shape) of the tail 1101 of the root canal file 110 is set to be the same as the non-circular hole 167112 in the upper part of the clamping base 1671, so that after the tail 1101 of the root canal file 110 is assembled in the clamping base 1671, the two cannot rotate relative to each other; it should be noted that this structure can also be a keyway structure.

[0058] like Figure 14As shown, the root canal file 110 has a groove 1102 on the side of the tail 1101 that mates with the protrusion 167314 on the elastic sheet 167312. The root canal file 110 also has a limiting boss 1103. When the root canal file 110 is assembled into the hole of the clamping base 1671, the limiting boss 1103 abuts against the cylindrical ring 167311 of the clamping member 16731, thereby limiting the clamping member 16731 ​​within the clamping base 1671.

[0059] like Figure 8 As shown, the fixed cover 16732 is threadedly installed on the top of the first columnar housing 1611. The fixed cover 16732 has an axial through hole in its center. The movable cover 16733 is installed inside the fixed cover 16732 via a boss structure, allowing the movable cover 16733 to move axially up and down within a certain range, and preventing slippage through the boss structure. A spring 16734 is provided between the movable cover 16733 and the top of the first columnar housing 1611. The spring 16734 keeps the movable cover 16733 in its upward movement limit state. A release post 167345 is provided in the middle of the movable cover 16733, which can contact the top pressing part 167313 of the elastic sheet 167312. When clamping the root canal file 110, the tail 1101 of the root canal file 110 is inserted through the bottom of the clamping base 1671. The tail 1101 of the root canal file 110 reaches the non-circular hole 167112 in the upper part of the clamping base 1671 to complete the clamping. During the upward movement of the root canal file 110, the top touches the protrusion 167314 on the elastic plate 167312, squeezing the two elastic plates 167312 to both sides. When the groove 1102 of the tail 1101 of the root canal file 110 reaches the protrusion 167314, the protrusion 167314 on the elastic plate 167312 enters the groove 1102, realizing the axial positioning of the root canal file 110. When it needs to be replaced, manually press the movable cover 16733. The movable cover 16733 squeezes the elastic plate 167312 to both sides through the release post 167345, so that the protrusion 167314 on the elastic plate 167312 disengages from the groove 1102, and the root canal file 110 can be easily removed.

[0060] In some embodiments, the front end of the rope-driven guide sleeve 132 is further provided with a posterior tooth opener 200.

[0061] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A dental root canal treatment device, characterized in that, Includes root canal files, telescopic shaft, drive unit, lifting mechanism, tilting mechanism, and telescopic drive component; The pitch mechanism is used to make fine adjustments to the pitch posture of the root canal file; The lifting mechanism is mounted on the tilting mechanism and is used to make fine adjustments to the height of the root canal file; The telescopic shaft is mounted on the lifting mechanism via a support device; The drive device is connected to the root canal file via a telescopic shaft, and drives the root canal file to rotate to perform root canal treatment. The telescopic drive is used to drive the telescopic shaft to make fine adjustments to the advance and retreat position of the root canal file; The root canal file's axis is perpendicular to the telescopic shaft, and the root canal file is connected to the telescopic shaft via a gear reversing mechanism. The gear reversing mechanism includes an end housing, a drive shaft, and a root canal file holder. The root canal file holder is mounted inside the end housing via a rotating pair. The end housing is connected to a telescopic drive, which drives the root canal file holder and the root canal file it holds to retract along the telescopic shaft. The root canal file holder is externally connected to the telescopic shaft via a gear set for power transmission. The telescopic drive component is a rope-driven mechanism, including a rope-driven base, a rope-driven guide sleeve, a traction rope, and at least two rope winders. The rope-driven guide sleeve is fixed on the rope-driven base, and the rope-driven base is fixed on a support device. The end housing is installed inside the rope-driven guide sleeve, and the lower end of the rope-driven guide sleeve has a clearance groove for adjusting the root canal file. At least one rope winder is connected to the opposite side of the end housing via the traction rope, and at least another rope winder is connected to the opposite side of the end housing via the traction rope. The synchronous and opposite movements of the at least two rope winders drive the end housing and the root canal file inside it to move axially along the telescopic shaft.

2. The dental root canal treatment device according to claim 1, characterized in that, The pitch mechanism includes a pitch motor, a pitch base, and a pitch connector. The pitch connector is mounted on the pitch base via a pitch drive shaft, and the pitch drive shaft is connected to the pitch motor via a worm gear transmission mechanism.

3. The dental root canal treatment device according to claim 1, characterized in that, The lifting mechanism is a lead screw and nut slide table lifting mechanism.

4. The dental root canal treatment device according to claim 1, characterized in that: The end housing includes a first cylindrical housing coaxial with the root canal file and a second cylindrical housing coaxial with the telescopic shaft. The root canal file clamping member is coaxially mounted in the first cylindrical housing via a bearing, and a first bevel gear is provided on the outside of the root canal file clamping member. The second cylindrical housing is provided with a transmission shaft sleeve, and the transmission shaft sleeve is provided with a freely rotatable transmission shaft. One end of the transmission shaft is fixedly connected to the telescopic shaft, and the other end is provided with a second bevel gear that meshes with the first bevel gear.

5. The dental root canal treatment device according to claim 4, characterized in that: The drive shaft sleeve is locked inside the second cylindrical housing by a shaft sleeve fastener.

6. The dental root canal treatment device according to claim 5, characterized in that: The bushing fixing component includes a first locking sleeve and a second locking sleeve. The first locking sleeve is sleeved on the outer end of the second cylindrical housing through a snap-fit ​​structure. The first locking sleeve has an internal thread. The second locking sleeve is tightened into the first locking sleeve through an external thread. A limiting structure is provided between the second locking sleeve and the transmission shaft sleeve to prevent the transmission shaft sleeve from slipping out.

7. The dental root canal treatment device according to claim 4, characterized in that: The root canal file clamping component includes a columnar clamping base and a base sleeve. The clamping base is coaxially mounted in the base sleeve and can rotate freely. The base sleeve is fixed in the first columnar housing. The first bevel gear is coaxially fixed outside the clamping base. The base sleeve has a clearance hole on its side for the first bevel gear to protrude. The root canal file is coaxially mounted in the clamping base through a clamping mechanism.

Images