Device for taking out filler in root canal

Abstract

The utility model discloses a device for taking out filler in a root canal, and relates to the technical field of oral medical instruments, the device comprises a clamping body and a sleeve, the clamping body comprises a clamping rod and at least three clamping claws, and the clamping rod is provided with a first through hole extending in the direction of the center line of the clamping rod; one end of each clamping jaw is fixedly connected with one end of the clamping rod, and the other end of each clamping jaw can extend in the direction away from the other end of the clamping rod and away from the center line of the clamping rod. The clamping rod is sleeved with the sleeve, and the sleeve and the clamping rod can move in the direction of the center line of the clamping rod. The sleeve can extrude the clamping jaws by moving in the direction close to the clamping jaws, the clamping jaws are in a closed state, and the clamping jaws can reset to be in an open state when being disengaged from the sleeve. The utility model has the advantages of higher safety, better taking-out effect, simple structure and convenience in application.

Description

Technical Field

[0001] This utility model relates to the field of oral medical device technology, and in particular to a device for removing root canal fillings. Background Technology

[0002] Root canal retreatment is a common treatment in endodontics, and the complete removal of old fillings (such as gutta-percha points) from the root canal is one of the clinical challenges. If the filling is not completely removed, it will affect the removal of contaminants from the root canal, and may even push the filling out of the apex during the cleaning process, severely impacting the treatment outcome. Currently, a combination of organic solvents and mechanical instruments is often used for removal. Specifically, a syringe filled with organic solvent is inserted into the root canal to deliver the solvent, dissolving the filling; then, a nickel-titanium file is used for root canal cleaning. However, because the lower segment of the root canal is often narrow and tortuous, this method is difficult to completely remove gutta-percha points in the apical region, and may even push the gutta-percha points out of the apical foramen, causing secondary damage and resulting in unsatisfactory removal of the filling. Utility Model Content

[0003] The purpose of this invention is to provide a root canal filling material removal device to solve the problems existing in the prior art. It can reduce or avoid the occurrence of complications caused by excessive insertion of organic solvent irrigation solution and mechanical removal instruments. It has high safety, good removal effect, and can assist in cleaning the root canal before and during filling material removal. It has a simple structure and is easy to use.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a device for removing intracanal filling material, comprising a clamping body and a sleeve, wherein:

[0006] The clamping body includes a clamping rod and at least three clamping claws. The clamping rod is provided with a first through hole extending along the center line of the clamping rod. One end of each clamping claw is fixedly connected to one end of the clamping rod, and the other end of each clamping claw can extend in a direction away from the other end of the clamping rod and away from the center line of the clamping rod.

[0007] The sleeve is fitted over the clamping rod and can move along the center line of the clamping rod. The sleeve can squeeze each clamping claw by moving towards the clamping claw and make the clamping claw close. Each clamping claw can return to an open state when it is disengaged from the sleeve.

[0008] Preferably, the clamping rod is threadedly connected to the sleeve.

[0009] Preferably, the clamping rod has at least two first flushing holes at one end near the clamping claw, and the sleeve has at least two second flushing holes on the outer wall of the end near the clamping claw. One end of each first flushing hole is connected to the first through hole, and the end of each second flushing hole away from the outer wall of the sleeve is connected to the other end of one of the first flushing holes.

[0010] Preferably, it further includes a first hand-held component, which is sleeved outside the clamping rod and can be fixedly connected to the end of the sleeve away from the clamping claw.

[0011] Preferably, it further includes a second hand-held component, which is fixedly connected to one end of the clamping rod away from the clamping claw; the second hand-held component has a second through hole extending along the center line of the clamping rod, and the second through hole communicates with the first through hole.

[0012] Preferably, when the sleeve rotates along the clamping rod until the second hand-held component contacts the first hand-held component, the first flushing hole communicates with the second flushing hole.

[0013] Preferably, it also includes an extension handle, which is detachably and fixedly connected to the second hand-held component or the clamping rod; the extension handle is provided with a rinsing channel, one end of which communicates with the first through hole, and the other end of which is used to connect to an external rinsing device.

[0014] Preferably, the extension handle includes a first handle and a second handle, one end of the first handle is fixedly connected to one end of the second handle, the other end of the first handle can extend into the first through hole and be interference-fitted with the first through hole, and the other end of the second handle extends in a direction away from the centerline of the first handle.

[0015] Preferably, the angle between the centerline of the second handle and the centerline of the first handle is 90° to 120°.

[0016] Preferably, it also includes an anti-slip component, which is fixedly connected to the outer side wall of the second handle.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This utility model provides a root canal filling material removal device, including a clamping body and a sleeve, wherein: the clamping body includes a clamping rod and at least three clamping claws, the clamping rod is provided with a first through hole extending along the center line of the clamping rod; one end of each clamping claw is fixedly connected to one end of the clamping rod, and the other end of each clamping claw can extend away from the other end of the clamping rod and away from the center line of the clamping rod; the sleeve is sleeved outside the clamping rod, and the sleeve can move with the clamping rod along the center line of the clamping rod; the sleeve can squeeze each clamping claw by moving towards the clamping claws, and make the clamping claws close up, and each clamping claw can return to an open state when it is disengaged from the sleeve. The device for removing root canal filling material is placed inside the root canal by squeezing the clamping claws with the cannula, causing them to retract. Moving the cannula away from the clamping claws opens them, allowing them to extend between the root canal wall and the filling material. Moving the cannula closer to the clamping claws and squeezing them closes them, clamping the filling material. The device is then removed while clamped, thus extracting the filling material. This invention effectively reduces the possibility of filling material breakage or being pushed out of the apical foramen by clamping the end of the filling material near the root canal opening. It eliminates the need to reach the end of the filling material, reducing or avoiding complications caused by excessive insertion of organic solvent irrigation fluid and mechanical removal instruments, resulting in better extraction. The first through-hole allows for connection to external root canal organic solvent irrigation fluid, aiding in root canal cleaning before and during filling material removal. The structure is simple and easy to use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the root canal filling material removal device provided by this utility model;

[0021] Figure 2 A cross-sectional view of the device for removing root canal filling material when the grippers are open;

[0022] Figure 3 A cross-sectional view of the device for removing root canal filling material when the gripper claws retract;

[0023] In the diagram: 100, root canal filling removal device; 1, sleeve; 101, second irrigation hole; 2, clamping rod; 201, first through hole; 202, first irrigation hole; 3, clamping claw; 4, first hand-held component; 5, second hand-held component; 501, second through hole; 6, extension handle; 601, irrigation channel; 602, first handle; 603, second handle; 7, anti-slip component. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The purpose of this invention is to provide a root canal filling material removal device to solve the problems existing in the prior art. It can reduce or avoid the occurrence of complications caused by excessive insertion of organic solvent irrigation solution and mechanical removal instruments. It has high safety, good removal effect, and can assist in cleaning the root canal before and during filling material removal. It has a simple structure and is easy to use.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-3As shown, this utility model provides a root canal filling material removal device 100, including a clamping body and a sleeve 1, wherein: the clamping body includes a clamping rod 2 and at least three clamping claws 3, the clamping rod 2 is provided with a first through hole 201 extending along the center line of the clamping rod 2; one end of each clamping claw 3 is fixedly connected to one end of the clamping rod 2, and the other end of each clamping claw 3 can extend away from the other end of the clamping rod 2 and away from the center line of the clamping rod 2; the sleeve 1 is sleeved on the outside of the clamping rod 2, and the sleeve 1 can move with the clamping rod 2 along the center line of the clamping rod 2; the sleeve 1 can squeeze each clamping claw 3 by moving towards the clamping claw 3, and make the clamping claw 3 close up, and each clamping claw 3 can reset to an open state when it is disengaged from the sleeve 1. When the clamping claw 3 is completely placed outside the sleeve 1, the clamping claw 3 does not contact the inner wall of the sleeve 1. At this time, each clamping claw 3 is in an open state, that is, the clamping claw 3 extends away from the other end of the clamping rod 2 and away from the center line of the clamping rod 2. When the sleeve 1 moves towards the clamping claw 3, the inner wall of the sleeve 1 can squeeze the clamping claw 3, causing the clamping claw 3 to retract towards the center line of the clamping rod 2, and the clamping claw 3 can at least partially retract into the sleeve 1. This invention first uses a sleeve 1 to compress the clamping claw 3, causing it to retract and placing the root canal filling material removal device 100 inside the root canal. Then, the sleeve 1 is moved away from the clamping claw 3, causing it to open to a certain extent or fully open, extending between the root canal wall and the filling material. Next, the sleeve 1 is moved closer to the clamping claw 3, compressing it to retract and clamp the filling material. Finally, the root canal filling material removal device 100 is removed in the clamped state, thus removing the filling material. Currently used removal methods combining organic solvents and mechanical removal instruments require breaking up the filling material before flushing it out. This requires the organic solvent and mechanical removal instruments to be inserted to the end of the filling material to achieve complete breaking and flushing, which can easily lead to complications. This invention allows for the removal of filling materials by clamping the end closest to the root canal opening, effectively reducing the possibility of breakage or being pushed out of the apical foramen. It eliminates the need to insert the filling material to the end, reducing or avoiding complications caused by excessive insertion of organic solvent irrigation fluid and mechanical removal instruments, resulting in better removal performance. Existing mechanical removal instruments for filling materials, such as cleaning files, have cutting threads on their outer walls, which can easily cut the inner wall of the root canal and cause damage. However, the outer wall of the sleeve 1 in this invention does not require cutting threads, further improving safety and removal efficiency. The first through hole 201 can be used to connect to an external root canal organic solvent irrigation fluid, assisting in cleaning the root canal before and during filling material removal. The structure is simple and easy to use.

[0028] In this utility model, the clamping rod 2 is threadedly connected to the sleeve 1.

[0029] In this utility model, at least two first flushing holes 202 are provided at one end of the clamping rod 2 near the clamping claw 3, and at least two second flushing holes 101 are provided on the outer side wall of the sleeve 1 near the clamping claw 3. One end of each first flushing hole 202 is connected to the first through hole 201, and the end of each second flushing hole 101 away from the outer side wall of the sleeve 1 can be connected to the other end of a first flushing hole 202. When the first irrigation hole 202 and the second irrigation hole 101 are connected, an irrigation fluid outlet can be formed. In use, the root canal filling material removal device 100 is inserted into the root canal and comes into contact with the surface of the filling material near the root canal opening. Organic solvent irrigation fluid is then introduced into the first through hole 201. The organic solvent irrigation fluid can not only enter the root canal through the first through hole 201, but also flow sequentially through the first irrigation hole 202 and the corresponding second irrigation hole 101 before flowing out from the outside of the sleeve 1. This increases the outlet area of ​​the irrigation fluid and reduces the irrigation pressure. Increasing the outlet position of the irrigation fluid can improve the uniformity of irrigation. The irrigation fluid flowing out from the second irrigation hole 101 on the outer wall of the sleeve 1 can better irrigate the lateral branches of the root canal, thus improving the irrigation effect.

[0030] This invention also includes a first hand-held component 4, which is sleeved on the outside of the clamping rod 2. The first hand-held component 4 can be fixedly connected to the end of the sleeve 1 away from the clamping claw 3. By keeping the clamping rod 2 fixed and turning the first hand-held component 4, the sleeve 1 can be moved along the external thread, thereby causing the clamping claw 3 to close or open.

[0031] The present invention also includes a second hand-held component 5, which can be fixedly connected to the end of the clamping rod 2 away from the clamping claw 3; the second hand-held component 5 has a second through hole 501 extending along the center line of the clamping rod 2, and the second through hole 501 communicates with the first through hole 201.

[0032] In this invention, when the sleeve 1 rotates along the clamping rod 2 until the second handheld component 5 contacts the first handheld component 4, the first rinsing hole 202 and the second rinsing hole 101 communicate. At this time, the first rinsing hole 202 and the second rinsing hole 101 can be used to irrigate the root canal. The first handheld component 4 and the second handheld component 5 of this invention can both allow the user to operate the root canal filling material removal device 100 and achieve alignment and positioning of the first rinsing hole 202 and the second rinsing hole 101, which helps to simplify the structure.

[0033] This invention also includes an extension handle 6, which is detachably and fixedly connected to the second handheld component 5 or the clamping rod 2. The extension handle 6 is provided with a rinsing channel 601, one end of which communicates with the first through hole 201, and the other end of which is used to connect to an external rinsing device. In a preferred embodiment, the other end of the rinsing channel 601 is detachably connected to the external rinsing device. The external rinsing device adds organic solvent rinsing liquid into the rinsing channel 601, which can enter the first through hole 201 through the rinsing channel 601 and then flow out through the first through hole 201 and the second rinsing hole 101. When the sleeve 1 is rotated, the clamping rod 2 is fixed by operating the extension handle 6, so that the clamping rod 2 does not rotate with the sleeve 1, thereby allowing the sleeve 1 to move along the clamping rod 2.

[0034] In this invention, the extension handle 6 includes a first handle 602 and a second handle 603. One end of the first handle 602 is fixedly connected to one end of the second handle 603. The other end of the first handle 602 can extend into the first through hole 201 and is interference-fitted with the first through hole 201. The other end of the second handle 603 extends away from the centerline of the first handle 602. It should be noted that the diameter of the second through hole 501 is larger than the diameter of the first through hole 201. The first handle 602 can pass through the second through hole 501 and extend into the first through hole 201, and be interference-fitted with the first through hole 201, thereby fixing the extension handle 6 to the clamping rod 2 for the operation of removing the filling material.

[0035] This invention also includes an anti-slip component 7, which is fixedly connected to the outer wall of the second handle 603. The anti-slip component 7 increases the friction between the hand and the second handle 603, facilitating operation.

[0036] In a preferred embodiment, both the first hand-held component 4 and the second hand-held component 5 are nuts, and the first hand-held component 4, the second hand-held component 5, the sleeve 1, and the clamping rod 2 are coaxially arranged. There are four clamping claws 3.

[0037] In a preferred embodiment, the sleeve 1 is made of nickel-titanium alloy. The clamping rod 2 and the clamping claw 3 are both made of stainless steel, nickel-titanium alloy, or polymer material. The anti-slip component 7 is made of rubber. It should be noted that the clamping claw 3 is in an open state when not subjected to external force; when squeezed by the sleeve 1, it can retract and clamp the filling material; and when the squeezing force disappears, the clamping claw 3 can return to its open state.

[0038] In a preferred embodiment, when the sleeve 1 is rotated along the external thread until the second hand-held component 5 contacts the first hand-held component 4, all the gripping claws 3 are exposed outside the sleeve 1.

[0039] In a preferred embodiment, the angle between the centerline of the second handle 603 and the centerline of the first handle 602 is 90° to 120°, that is, the extension handle 6 is designed with a bend of 90° to 120°, which facilitates operation during use.

[0040] In one feasible implementation, the sleeve 1 has a length of 21 mm, an outer diameter of 0.5 mm, and an inner diameter of 0.45 mm; the diameter of the first through hole 201 of the clamping rod 2 is 0.4 mm, and the length of the working section (external thread section) of the clamping rod 2 is 5 mm. There are 5 first flushing holes 202 and 5 second flushing holes 101, and the first flushing holes 202 and the second flushing holes 101 correspond one-to-one.

[0041] The method of using the root canal filling material removal device 100 provided by this utility model is as follows:

[0042] Under a microscope, the root canal filling material removal device 100 is inserted and rotated. After fixing the clamping rod 2 with the extension handle 6, the first hand-held component 4 is rotated counterclockwise to extend the clamping claw 3 and place it around the root canal filling material. The first hand-held component 4 is rotated clockwise to move it closer to the clamping claw 3, squeezing the clamping claw 3 to gradually close it, thereby clamping the root canal filling material. The clamping rod 2 is fixed with the extension handle 6, and the root canal filling material removal device 100 is rotated out in the opposite direction to smoothly remove the root canal filling material.

[0043] The root canal filling material removal device 100 provided by this utility model is preferably used in conjunction with existing organic solvents and mechanical removal instruments. First, the filling material near the root canal opening is removed using the organic solvent and mechanical removal instruments. Then, the root canal filling material removal device 100 is used to grasp the filling material away from the root canal opening, ensuring that the clamping force of the root canal filling material removal device 100 can effectively pull out the filling material. More preferably, the root canal filling material removal device 100 is used to remove filling material from the lower third of the root canal. The root canal filling material removal device 100 provided by this utility model is particularly suitable for removing filling materials from large root canals such as those in anterior teeth or premolars.

[0044] The following example, taking the removal of filling material from the apical region of the upper anterior teeth, further illustrates the usage of the root canal filling material removal device 100 provided by this utility model:

[0045] First, irrigate the root canal using the conventional irrigation method described in the background art, and then clean the filling material in the root canal using the mechanical removal instruments described in the background art.

[0046] When filling material adheres to the lower part of the root canal wall or to the lower 1 / 3 of the root canal that cannot be fully reached by mechanical removal instruments, rotate the second hand-held component 5 to screw the root canal filling material removal device 100 into the working area (at this time, the clamping claw 3 is in the retracted state). Fix the clamping rod 2 by extending the handle 6, and rotate the first hand-held component 4 counterclockwise to extend the clamping claw 3. After placing the clamping claw 3 around the root canal filling material, rotate the first hand-held component 4 clockwise to move the sleeve 1 closer to the clamping claw 3, so that the clamping claw 3 retracts and clamps the root canal filling material. After fixing the clamping rod 2 with the extended handle 6, rotate the root canal filling material removal device 100 out in the counterclockwise direction to remove the root canal filling material.

[0047] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A device for removing root canal filling material, characterized in that: Includes the clamping body and the sleeve, wherein: The clamping body includes a clamping rod and at least three clamping claws. The clamping rod is provided with a first through hole extending along the center line of the clamping rod. One end of each clamping claw is fixedly connected to one end of the clamping rod, and the other end of each clamping claw can extend in a direction away from the other end of the clamping rod and away from the center line of the clamping rod. The sleeve is sleeved outside the clamping rod, and the sleeve can move along the center line of the clamping rod; the sleeve can squeeze each of the clamping claws by moving towards the clamping claws and make the clamping claws close up; each of the clamping claws can return to the open state when it is disengaged from the sleeve. The clamping rod has at least two first flushing holes at one end near the clamping claw, and the sleeve has at least two second flushing holes on the outer wall of the end near the clamping claw. One end of each first flushing hole is connected to the first through hole, and the end of each second flushing hole away from the outer wall of the sleeve is connected to the other end of one of the first flushing holes.

2. The root canal filling material removal device according to claim 1, characterized in that: The clamping rod is threadedly connected to the sleeve.

3. The root canal filling material removal device according to claim 1, characterized in that: It also includes a first hand-held component, which is sleeved outside the clamping rod and can be fixedly connected to the end of the sleeve away from the clamping claw.

4. The root canal filling material removal device according to claim 3, characterized in that: It also includes a second hand-held component, which can be fixedly connected to the end of the clamping rod away from the clamping claw; the second hand-held component has a second through hole extending along the center line of the clamping rod, and the second through hole communicates with the first through hole.

5. The root canal filling material removal device according to claim 4, characterized in that: When the sleeve rotates along the clamping rod until the second hand-held component contacts the first hand-held component, the first flushing hole communicates with the second flushing hole.

6. The root canal filling material removal device according to claim 4, characterized in that: It also includes an extension handle, which is detachably and fixedly connected to the second hand-held component or the clamping rod; the extension handle is provided with a rinsing channel, one end of which communicates with the first through hole, and the other end of which is used to connect to an external rinsing device.

7. The root canal filling material removal device according to claim 6, characterized in that: The extension handle includes a first handle and a second handle. One end of the first handle is fixedly connected to one end of the second handle. The other end of the first handle can extend into the first through hole and be connected to the first through hole with an interference fit. The other end of the second handle extends in a direction away from the center line of the first handle.

8. The root canal filling material removal device according to claim 7, characterized in that: The angle between the centerline of the second handle and the centerline of the first handle is 90°~120°.

9. The root canal filling material removal device according to claim 7, characterized in that: It also includes an anti-slip component, which is fixedly connected to the outer side wall of the second handle.

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