CN112807107A - Filling device and root canal therapy equipment - Google Patents

Abstract

The utility model provides a fill device and root canal therapy equipment, relates to dental medical instrument technical field, including the handle and with handle fixed connection's conveyer pipe, be provided with the slider in the handle, be used for holding filler in the conveyer pipe, still be provided with the plug in the conveyer pipe, the one end of plug is passed through the conveyer pipe and is stretched into in the handle and with slider fixed connection near the entry of the one end of handle, promote the slider can drive the plug and move in the conveyer pipe for it sends out to promote the filler via the export of the one end that the handle was kept away from to the conveyer pipe. The filling device and the root canal therapy equipment can be operated conveniently, so that the filling efficiency is improved, and the treatment time is shortened.

Description

Filling device and root canal therapy equipment

Technical Field

The invention relates to the technical field of dental medical instruments, in particular to a filling device and root canal therapy equipment.

Background

MTA (methyl thiazolyl tetrazolium) is a trioxane mineral polymer, also called root canal cement, is a novel biological material, has good biocompatibility, can effectively promote the regeneration of tissues, has good antibacterial and bacteriostatic properties, is nontoxic to the tissues, has lasting sealing property, greatly improves the success rate of measuring and repairing and root tip inverted filling, and is widely applied to oral treatment such as root canal inverted filling, repairing root canal perforation, absorbing and repairing filling in the root canal, marrow capping, root tip forming and the like.

Root canal therapy, also known as endodontic therapy, is an operation for treating pulp necrosis and root infection in oral treatment. The specific process is that firstly the infected nerve tissue in the dental pulp is removed, in order to prevent the root canal from being further infected, the root canal needs to be filled, the root canal is tightly filled with the material with good biocompatibility, the dead space is eliminated, the apical pore is closed, the bacteria are prevented from invading the root canal again, and finally the dental crown is filled with the resin material, thus completing the root canal therapy.

At present, in the domestic root canal therapy, a corresponding MTA special filling device which is convenient to operate manually does not exist, and most MTA filling devices in the market at present have the problem of inconvenient operation, so that the filling efficiency is low, and the treatment time is long.

Disclosure of Invention

The invention aims to provide a filling device and root canal treatment equipment, which can be operated conveniently, thereby improving the filling efficiency and shortening the treatment time.

The embodiment of the invention is realized by the following steps:

in one aspect of the embodiment of the present invention, a filling device is provided, which includes a handle and a delivery pipe fixedly connected to the handle, a slider is disposed in the handle, the delivery pipe is used for accommodating a filling material, a core rod is further disposed in the delivery pipe, one end of the core rod extends into the handle through an inlet at one end of the delivery pipe close to the handle and is fixedly connected to the slider, and the slider is pushed to drive the core rod to move in the delivery pipe so as to push the filling material to be delivered through an outlet at one end of the delivery pipe far from the handle. The filling device can be operated conveniently, thereby improving the filling efficiency and shortening the treatment time.

Optionally, a slide is disposed on the handle, a push block is fixedly connected to the slide block, the push block is disposed in the slide and slides in the slide, and the push block is pushed to drive the slide block to move along the handle.

Optionally, an elastic member is further arranged in the handle, one end of the elastic member is fixedly connected with one end, far away from the core rod, of the sliding block, and the other end of the elastic member is fixedly connected with the handle.

Optionally, the medical device further comprises a filling joint, wherein the filling joint comprises a large-diameter end and a small-diameter end which are opposite, the large-diameter end of the filling joint is fixedly connected with the handle, and the small-diameter end of the filling joint is fixedly connected with the conveying pipe.

Optionally, a guide handle is arranged in the filling joint, and the core rod is fixedly connected with the sliding block through the guide handle.

Optionally, a clamping groove is formed in the sliding block, a protrusion is arranged on the guide handle, and the protrusion is accommodated in the clamping groove so that the guide handle is clamped with the sliding block.

Optionally, the filling device further comprises a pressurizing assembly, the pressurizing assembly is fixedly connected with one end of the handle far away from the delivery pipe, and the pressurizing assembly is used for pressing the filling material.

Optionally, the pressurizing assembly includes a pressurizing connector and a pressurizing needle, the pressurizing needle is fixedly connected with the handle through the pressurizing connector, and one end of the pressurizing needle, which is far away from the pressurizing connector, can be in contact with the filling material in a propping manner.

Optionally, the handle is provided with anti-slip lines.

In another aspect of the present invention, an endodontic instrument is provided, which includes the filling device. The filling device can be operated conveniently, thereby improving the filling efficiency and shortening the treatment time.

The embodiment of the invention has the beneficial effects that:

the filling device comprises a handle and a conveying pipe fixedly connected with the handle, wherein a sliding block is arranged in the handle, the conveying pipe is used for containing filling materials, a core rod is further arranged in the conveying pipe, one end of the core rod extends into the handle through an inlet at one end, close to the handle, of the conveying pipe and is fixedly connected with the sliding block, the sliding block is pushed to drive the core rod to move in the conveying pipe, and the filling materials are sent out through an outlet at one end, far away from the handle, of the conveying pipe. When an operator pushes the sliding block to move towards one side far away from the conveying pipe in the handle, the core rod can be driven to move towards an outlet far away from the conveying pipe in the conveying pipe, so that a cavity is formed in one side, far away from the sliding block, of the core rod in the conveying pipe, and the filler can be filled in one side, far away from the sliding block, of the core rod in the conveying pipe; when an operator pushes the sliding block to move towards one side close to the conveying pipe in the handle, the core rod can be driven to move towards the outlet close to the conveying pipe in the conveying pipe, so that the filling material is pushed to move towards the outlet close to the conveying pipe in the conveying pipe and is finally sent out through the outlet at one end, far away from the handle, of the conveying pipe. When using this filling device to fill the root canal, the export of the one end that the handle was kept away from to the conveyer pipe can be used for aiming at the root canal that patient's needs were filled by the operator, and so, the filling material just can be filled to patient's needs in the root canal that fills, and above-mentioned operation has simple convenient advantage, can improve filling efficiency, shortens treatment time. To sum up, compare in the filling equipment for root canal therapy among the prior art, this application provides this filling device can be convenient for operate to improve and fill efficiency, shorten treatment time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a filling device according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a filling device according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of a filling device according to an embodiment of the present invention;

FIG. 4 is a fourth schematic structural diagram of a filling device according to an embodiment of the present invention;

FIG. 5 is a fifth schematic view illustrating a filling device according to an embodiment of the present invention;

FIG. 6 is a sixth schematic view illustrating a structure of a filling device according to an embodiment of the present invention;

fig. 7 is a seventh schematic structural diagram of a filling device according to an embodiment of the present invention;

fig. 8 is an eighth schematic structural view of a filling device according to an embodiment of the present invention;

fig. 9 is a ninth schematic structural diagram of a filling device according to an embodiment of the present invention.

Icon: 100-a filling device; 10-a handle; 11-a slide block; 111-card slot; 12-a slide; 13-a push block; 14-an elastic member; 15-anti-skid lines; 16-a fixed seat; 20-a delivery pipe; 21-a core rod; 30-a filling joint; 31-a guide handle; 311-bumps; 40-a pressurizing assembly; 41-a pressure fitting; 42-a pressurizing needle; 200-filling materials.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 9, the present embodiment provides a filling device 100, which includes a handle 10 and a delivery tube 20 fixedly connected to the handle 10, wherein a sliding block 11 is disposed in the handle 10, the delivery tube 20 is used for accommodating a filling material 200, a core rod 21 is further disposed in the delivery tube 20, one end of the core rod 21 extends into the handle 10 through an inlet of the delivery tube 20 near one end of the handle 10 and is fixedly connected to the sliding block 11, and pushing the sliding block 11 can drive the core rod 21 to move in the delivery tube 20, so as to push the filling material 200 to be delivered through an outlet of the delivery tube 20 far from one end of the handle 10. The filling device 100 can be easily operated, thereby improving the filling efficiency and shortening the treatment time.

It should be noted that the filling device 100 includes a handle 10 and a delivery pipe 20, a slider 11 is disposed in the handle 10, the slider 11 is disposed along the extending direction of the handle 10, the slider 11 can move in the handle 10 along the extending direction of the handle 10, a core rod 21 is disposed in the delivery pipe 20, the core rod 21 can move in the delivery pipe 20 along the extending direction of the delivery pipe 20, the delivery pipe 20 includes an inlet near one end of the handle 10 and an outlet far from one end of the handle 10, wherein the handle 10 and the inlet near one end of the delivery pipe 20 are fixedly connected, one end of the core rod 21 extends into the handle 10 through the inlet near one end of the delivery pipe 20 and is fixedly connected with the slider 11, the delivery pipe 20 is also used for accommodating the filling material 200 (may be MTA), the filling material 200 is disposed along the extending direction of the delivery pipe 20, and the charge 200 is located at the end of the core rod 21 remote from the slide 11.

When an operator pushes the sliding block 11 to move towards the side far away from the delivery pipe 20 in the handle 10, the core rod 21 can be driven to move towards the outlet far away from the delivery pipe 20 in the delivery pipe 20, so that the side, far away from the sliding block 11, of the core rod 21 in the delivery pipe 20 is provided with a cavity, and the filler 200 can be filled on the side, far away from the sliding block 11, of the core rod 21 in the delivery pipe 20; when the operator pushes the slide 11 to move toward the side close to the delivery pipe 20 in the handle 10, the core rod 21 can be driven to move toward the outlet close to the delivery pipe 20 in the delivery pipe 20, so that the filling material 200 is pushed to move toward the outlet close to the delivery pipe 20 in the delivery pipe 20 and finally is delivered out through the outlet at the end of the delivery pipe 20 far from the handle 10. When the filling device 100 is used to fill the root canal, the outlet of the end of the delivery tube 20 away from the handle 10 can be used by the operator to align with the root canal of the patient to be filled, so that the filling material 200 can be filled into the root canal of the patient to be filled.

With respect to how the filler 200 is filled in the delivery pipe 20, there is no particular limitation, and those skilled in the art should be able to make appropriate selection and design according to the actual situation, only by making the core rod 21 of the filler 200 filled in the delivery pipe 20 far away from the side of the slider 11. Illustratively, the wall surface of the side of the delivery tube 20 away from the handle 10 may be provided with an inlet opening at an angle so that when the side of the delivery tube 20 away from the handle 10 is inserted into a container containing the filler 200, the filler 200 can smoothly enter the delivery tube 20 through the inlet opening.

It should be noted that the extension direction of the delivery tube 20 may or may not be exactly the same as the extension direction of the handle 10, so that the handle 10 can provide stable support for the movement of the slider 11 along the inside of the handle 10, and the delivery tube 20 can provide stable support for the movement of the core rod 21 along the inside of the delivery tube 20, and further facilitate the filling treatment of the root canal of the patient at different positions.

Illustratively, when the root canal to be filled of the patient is located in the oral cavity near the middle, the extension direction of the delivery pipe 20 may be completely the same as the extension direction of the handle 10, and when the root canal to be filled of the patient is located in the oral cavity near the two ends, the extension direction of the delivery pipe 20 may not be completely the same as the extension direction of the handle 10, for example, the extension direction of the side of the delivery pipe 20 near the handle 10 is the same as the extension direction of the handle 10 (i.e., the extension direction of the side of the delivery pipe 20 away from the handle 10 is parallel to the extension direction of the handle 10), and the extension direction of the side of the delivery pipe 20 away from the handle 10 is different from the extension direction of the handle 10 (i.e., the extension direction of the side of the delivery pipe 20 away from.

In order to make the extending direction of the delivery tube 20 not identical to the extending direction of the handle 10, for example, in this embodiment, the delivery tube 20 may be made of a hollow tube made of nitinol, and the core rod 21 may be made of nitinol wire capable of being pre-bent or non-toxic plastic, so that the delivery tube 20 and the core rod 21 may be easily bent and changed on the premise that the filling device 100 is capable of filling the root canal of the patient, thereby making the filling device 100 further convenient for the operator to perform filling treatment on the root canal of the patient at different positions.

As described above, the filling device 100 includes the handle 10 and the delivery tube 20 fixedly connected to the handle 10, the slider 11 is disposed in the handle 10, the delivery tube 20 is used for accommodating the filling material 200, the core rod 21 is further disposed in the delivery tube 20, one end of the core rod 21 extends into the handle 10 through the inlet of the delivery tube 20 near one end of the handle 10 and is fixedly connected to the slider 11, and the pushing of the slider 11 can drive the core rod 21 to move in the delivery tube 20, so as to push the filling material 200 to be delivered through the outlet of the delivery tube 20 far from one end of the handle 10. When an operator pushes the sliding block 11 to move towards the side far away from the delivery pipe 20 in the handle 10, the core rod 21 can be driven to move towards the outlet far away from the delivery pipe 20 in the delivery pipe 20, so that the side, far away from the sliding block 11, of the core rod 21 in the delivery pipe 20 is provided with a cavity, and the filler 200 can be filled on the side, far away from the sliding block 11, of the core rod 21 in the delivery pipe 20; when the operator pushes the slide 11 to move toward the side close to the delivery pipe 20 in the handle 10, the core rod 21 can be driven to move toward the outlet close to the delivery pipe 20 in the delivery pipe 20, so that the filling material 200 is pushed to move toward the outlet close to the delivery pipe 20 in the delivery pipe 20 and finally is delivered out through the outlet at the end of the delivery pipe 20 far from the handle 10. When the filling device 100 is used to fill the root canal, the outlet of the end of the delivery tube 20 away from the handle 10 can be used by the operator to align with the root canal of the patient to be filled, so that the filling material 200 can be filled into the root canal of the patient to be filled. In summary, compared with the filling device for root canal treatment in the prior art, the filling device 100 provided by the present application can be conveniently operated, thereby improving the filling efficiency and shortening the treatment time.

How the sliding block 11 is slidably disposed in the handle 10 is not particularly limited, and those skilled in the art should be able to make reasonable selection and design according to actual situations, only to enable the operator to conveniently push the sliding block 11 to move in the handle 10 along the extending direction of the handle 10. For example, as shown in fig. 1 to 4, in the present embodiment, a slide 12 is disposed on the handle 10, a push block 13 is fixedly connected to the slide 11, the push block 13 is disposed in the slide 12 and slides in the slide 12, and pushing the push block 13 can drive the slide 11 to move along the handle 10, so that an operator can drive the slide 11 disposed inside the handle 10 to move along the handle 10 by pushing the push block 13 disposed on the surface of the handle 10 to move along the slide 12.

Regarding the fixing connection manner of the pushing block 13 and the sliding block 11, there is no particular limitation, and those skilled in the art should be able to make reasonable selection and design according to the actual situation, so long as the pushing block 13 can be fixedly connected to the sliding block 11. For example, as shown in fig. 4, in this embodiment, in order to facilitate the detachment and installation of the pushing block 13 and the sliding block 11, the pushing block 13 may be disposed in the sliding channel 12, the sliding block 11 may be disposed in the handle 10, and a screw may extend into the sliding block 11 through the pushing block 13 along a connecting line of the pushing block 13 and the sliding block 11, so that the pushing block 13 and the sliding block 11 may be detachably and fixedly connected by the screw, thereby facilitating the detachment and installation and maintenance of the filling device 100.

In order to facilitate the slide block 11 to drive the core rod 21 to move towards the outlet far away from the delivery pipe 20, as shown in fig. 1 and 4, in the present embodiment, an elastic member 14 is further disposed in the handle 10, one end of the elastic member 14 is fixedly connected with one end of the slide block 11 far away from the core rod 21, and the other end of the elastic member 14 is fixedly connected with the handle 10, so that the push block 13, the slide block 11 and the core rod 21 can be reset without an external force applied by an operator. Illustratively, the elastic member 14 is a spring.

Regarding the fixed connection manner of the other end of the elastic member 14 and the handle 10, there is no particular limitation, and those skilled in the art should be able to make reasonable selection and design according to the actual situation, only that the elastic member 14 can be fixedly connected in the handle 10. Illustratively, as shown in fig. 1 and 4, in the present embodiment, an end of the handle 10 away from the delivery pipe 20 is provided with a fixed seat 16, and the other end of the elastic member 14 is fixedly connected to the fixed seat 16.

It will be understood by those skilled in the art that when the elastic member 14 is disposed in the handle 10, the elastic member 14 should be in a natural state or a stretched state, but not in a compressed state, so that the push block 13, the slide block 11 and the core rod 21 can be reset by changing the elastic potential energy of the elastic member 14.

As shown in fig. 1, 2 and 5, in the present embodiment, the filling device 100 further includes a filling connector 30, the filling connector 30 includes a large diameter end and a small diameter end, the large diameter end of the filling connector 30 is fixedly connected to the handle 10, and the small diameter end of the filling connector 30 is fixedly connected to the delivery pipe 20. Wherein, the filling joint 30 can be connected with the handle 10 by screw thread, and the delivery pipe 20 can be fixed with the filling joint 30 by glue, so that the filling device 100 can match with the filling joints 30 with various specifications.

Since the filling joint 30 includes the opposite large-diameter end and small-diameter end, the outer diameter of the large-diameter end can be close to the outer diameter of the handle 10, and the outer diameter of the small-diameter end can be close to the outer diameter of the delivery pipe 20, when the filling device 100 is used for filling the root canal, even if the small-diameter end of the filling joint 30 extends into the oral cavity, the discomfort of the patient can not be caused, and the condition that the discomfort of the patient is easily caused when the end of the handle 10 close to the delivery pipe 20 extends into the oral cavity can not occur. In addition, the side of the delivery tube 20 close to the handle 10 can be partially accommodated in the filling joint 30 to further increase the fixing strength of the delivery tube 20 through the filling joint 30, thereby preventing the delivery tube 20 from falling off from the end of the handle 10.

As shown in fig. 1, 7 and 8, in the present embodiment, a guide handle 31 is disposed in the filling joint 30, the guide handle 31 is disposed along the extending direction of the filling joint 30, the guide handle 31 is movable in the filling joint 30 along the extending direction of the filling joint 30, the core rod 21 is fixedly connected to the slide block 11 through the guide handle 31, and when an operator pushes the slide block 11 to move in the handle 10 toward a side close to the delivery pipe 20, the core rod 21 can be driven to move in the delivery pipe 20 through the guide handle 31. In addition, the side of the guide shank 31 close to the slider 11 may be partially accommodated in the handle 10 to further increase the fixing strength of the core rod 21 by the guide shank 31, thereby avoiding a situation where the core rod 21 may be detached from the end of the slider 11.

Regarding the fixing connection manner of the guiding handle 31 and the sliding block 11, there is no particular limitation, and those skilled in the art should be able to make reasonable selection and design according to the actual situation, only by making the core rod 21 fixedly connected with the sliding block 11 through the guiding handle 31. Illustratively, as shown in fig. 1, 4 and 6, in the present embodiment, the sliding block 11 is provided with a locking groove 111, the guiding handle 31 is provided with a protrusion 311, and the protrusion 311 is received in the locking groove 111 to lock the guiding handle 31 with the sliding block 11, so that the guiding handle 31 is detachably and fixedly connected with the sliding block 11, thereby facilitating the disassembly and maintenance of the filling device 100. Furthermore, the mandrel 21 may be fixed to the guide shank 31 by gluing.

In order to compact the filling material 200 filled into the root canal of the patient, thereby avoiding the phenomenon of air bubbles and gaps, as shown in fig. 1, 2 and 9, in the present embodiment, the filling device 100 further comprises a pressing member 40, the pressing member 40 is fixedly connected with one end of the handle 10 far away from the delivery tube 20, and the pressing member 40 is used for pressing the filling material 200.

As shown in fig. 1, 2 and 9, in the present embodiment, the pressurizing assembly 40 includes a pressurizing connector 41 and a pressurizing needle 42, the pressurizing needle 42 is fixedly connected to the handle 10 through the pressurizing connector 41, and an end of the pressurizing needle 42 away from the pressurizing connector 41 can be in contact with the filling material 200. Wherein, the pressure connector 41 can be connected with the handle 10 by screw thread, and the pressure needle 42 can be fixed with the pressure connector 41 by gluing, so that the filling device 100 can match the pressure needle 42 heads with various specifications.

As shown in fig. 1 to 3, in order to improve the user experience of the operator and avoid the phenomenon that the hand of the operator slips when using the filling device 100, in the present embodiment, the handle 10 is provided with the anti-slip threads 15. For example, in the present embodiment, the anti-slip pattern 15 may be grooves in a strip structure distributed at intervals. Of course, in other embodiments, the anti-slip pattern 15 may also be the protrusions 311 with the wave-shaped structure at intervals, which is not limited in particular, and those skilled in the art should be able to make reasonable selection and design according to the actual situation, so long as the filling device 100 can have the anti-slip function through the anti-slip pattern 15.

The present application also provides a root canal treatment device. The endodontic instrument provided in this embodiment includes the filling device 100 described above. Since the structure and advantageous effects of the filling device 100 have been described in detail in the foregoing embodiments, no further description is given.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The filling device is characterized by comprising a handle and a conveying pipe fixedly connected with the handle, wherein a sliding block is arranged in the handle, the conveying pipe is used for containing filling materials, a core rod is further arranged in the conveying pipe, one end of the core rod extends into the handle through an inlet at one end, close to the handle, of the conveying pipe and is fixedly connected with the sliding block, the sliding block is pushed to drive the core rod to move in the conveying pipe, and the filling materials are pushed to be sent out through an outlet at one end, far away from the handle, of the conveying pipe.

2. The filling device according to claim 1, wherein a slide is provided on the handle, and a pushing block is fixedly connected to the sliding block, and the pushing block is disposed in the slide and slides in the slide, and the sliding block is driven to move along the handle by pushing the pushing block.

3. The filling device according to claim 1, wherein an elastic member is further disposed in the handle, one end of the elastic member is fixedly connected to one end of the slider away from the core rod, and the other end of the elastic member is fixedly connected to the handle.

4. The inflation device of claim 1, further comprising an inflation fitting including opposite large and small diameter ends, the large diameter end of the inflation fitting fixedly connected to the handle and the small diameter end of the inflation fitting fixedly connected to the delivery tube.

5. The filling device according to claim 4, wherein a guide handle is provided in the filling joint, and the core rod is fixedly connected with the slide block through the guide handle.

6. The filling device according to claim 5, wherein the sliding block is provided with a clamping groove, the guide handle is provided with a protrusion, and the protrusion is accommodated in the clamping groove so that the guide handle is clamped with the sliding block.

7. The filling device according to claim 1, further comprising a pressurizing assembly fixedly connected to an end of the handle remote from the delivery tube, the pressurizing assembly being configured to press the filling material.

8. The filling device according to claim 7, wherein the pressurizing assembly comprises a pressurizing connector and a pressurizing needle, the pressurizing needle is fixedly connected with the handle through the pressurizing connector, and one end of the pressurizing needle, which is far away from the pressurizing connector, can be in contact with the filling material in a propping manner.

9. The filling device according to claim 1, wherein the handle is provided with an anti-slip thread.

10. An endodontic instrument comprising the filling device according to any one of claims 1 to 9.

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