A multi-filling dental gel filling instrument with scale marks

Abstract

The utility model discloses a kind of multiple filling gutta percha filling instruments with scale mark, including shell, glue injection needle is arranged in the front end of shell, push rod is arranged in the rear end of shell;Heating tube that is communicated with glue injection needle is equipped in shell, push rod one end is inserted into heating tube and can be moved along heating tube axial reciprocating;Discharge tank is equipped on shell, discharge rack is equipped in shell, discharge rack is equipped with the feeding channel that is communicated with heating tube axial, the upper end opening of feeding channel and with discharge tank vertical correspondence;Push rod can push the gutta percha stick in feeding channel into heating tube;The length of heating tube inner chamber can accommodate at least two gutta percha sticks;Two clamping grooves are equipped on push rod exposed outside shell, clamping groove is used to indicate the initial position of two gutta percha sticks, with clamping groove as base point, there is gutta percha dosage scale mark on push rod behind, can be added two gutta percha sticks once, the filling amount of gutta percha increases, increase the use frequency after single filling, meet the demand of short time multiple use.

Description

Technical Field

[0001] This utility model belongs to the field of dental surgical instruments and relates to a multi-fill gutta-percha filling instrument with graduated markings. Background Technology

[0002] In the field of dentistry, root canal treatment is a common and crucial procedure aimed at removing infected material from the root canal and filling it tightly to prevent reinfection. Gutta-percha, as the core material for root canal filling, directly impacts the success or failure of the treatment.

[0003] Currently, gutta-percha instruments are essential tools for root canal filling. However, existing instruments can only hold a single gutta-percha tube, and each tube has a limited number of uses, failing to meet the needs of patients for multiple uses in a short period, thus affecting treatment efficiency and increasing patient waiting time. Furthermore, in terms of ease of use, the instrument needs to be cleaned after use before inserting new gutta-percha, and the cleaning process is quite complex. Utility Model Content

[0004] The purpose of this invention is to provide a multi-fill gutta-percha filling instrument with graduated markings, which can load two gutta-percha sticks at once and can display the amount of gutta-percha in the instrument in real time.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A multi-fill gutta-percha filling device with graduated markings includes a housing, a dispensing needle passing through the front end of the housing, and a push rod passing through the rear end of the housing. A heating element connected to the dispensing needle is disposed inside the housing. One end of the push rod is inserted into the heating element and can reciprocate along the axial direction of the heating element. A material feeding groove is provided on the housing, and a material feeding rack is provided inside the housing. The material feeding rack has a feeding channel axially connected to the heating element, with an opening at the upper end that is perpendicular to the material feeding groove. The push rod can push the gutta-percha stick in the feeding channel into the heating element.

[0007] The length of the inner cavity of the heating tube can accommodate at least two rubber sticks; the push rod exposed outside the outer shell is provided with two slots, which are used to indicate the initial position of the two rubber sticks, and scale markings are provided on the push rod with the slots as the base point.

[0008] As a further improvement of one embodiment of this utility model, a handle is pivotally mounted on the outer shell, and a coil spring is provided at the connection between the handle and the outer shell. The coil spring keeps the handle in an outward initial state when it is not under force. A transmission assembly is provided inside the outer shell and is connected to the handle. The handle is connected to the push rod through the transmission assembly, driving the push rod to move axially along the heating element. A return spring is provided on the push rod, with one end of the return spring abutting against the heating element and the other end abutting against the transmission assembly.

[0009] As a further improvement of one embodiment of this utility model, the transmission assembly includes an extrusion connecting rod and a transmission component sleeved on the push rod. One end of the transmission component is hinged to the lower end of the extrusion connecting rod, and the other end of the transmission component is hinged to the upper end of the push rod. A platform for the transmission component to be placed flat is provided inside the housing. The extrusion connecting rod pushes the push rod to move through friction. A thrust inner ring is sleeved on the push rod inside the housing, and the thrust inner ring provides greater resistance to the push rod's retraction than the force exerted on the extrusion connecting rod during retraction.

[0010] As a further improvement of one embodiment of the present invention, the extrusion connecting rod has a groove for one end of the return spring to abut.

[0011] As a further improvement of one embodiment of the present utility model, a support platform is provided inside the outer shell, the thrust inner ring is provided inside the support platform, and the extrusion connecting rod abuts against the support platform on one side under the action of the return spring.

[0012] As a further improvement of one embodiment of the present utility model, the backrest has a grid-like structure inside, and a channel for inserting a push rod is provided axially on its upper side.

[0013] As a further improvement of one embodiment of the present invention, the tail of the push rod has a sleeve, the outer diameter of which is larger than the inner diameter of the thrust inner ring.

[0014] As a further improvement of one embodiment of the present invention, the sleeve is provided with the scale markings.

[0015] The above technical solution has the following advantages: two gutta-percha sticks can be added at once, increasing the amount of gutta-percha filling and the number of uses after a single filling, meeting the needs of short-term multiple uses; the scale markings and slots on the push rod allow for a clear view of the remaining amount of gutta-percha, so that it can be replenished in advance before the next dental procedure; the application of the feeding slot facilitates the placement and cleaning of gutta-percha sticks, improving operational convenience. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 A three-dimensional structural schematic diagram provided for this utility model;

[0019] Figure 2 A top view of the structure provided for this utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0021] Figure 4 A schematic diagram of the push rod structure provided by this utility model.

[0022] In the picture:

[0023] 1. Outer shell;

[0024] 2. Injection needle;

[0025] 3. Push rod;

[0026] 31, 32, slot; 33, sleeve;

[0027] 4. Heating element;

[0028] 5. Material feeding rack;

[0029] 6. Handle;

[0030] 7. Return spring;

[0031] 8. Extruded connecting rod;

[0032] 9. Transmission components;

[0033] 10. Thrust ring;

[0034] 11. Feed chute;

[0035] 12. Backing onto the platform. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0038] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model. Example

[0039] See Figures 1-4 As shown, a multi-fill gutta-percha filling device with graduated markings includes a housing 1, with a dispensing needle 2 inserted through the front end of the housing 1 and a push rod 3 inserted through the rear end of the housing 1; a heating tube 4 connected to the dispensing needle 2 is provided inside the housing 1, one end of the push rod 3 is inserted into the heating tube 4 and can move back and forth along the axial direction of the heating tube 4, a feeding groove 11 is provided on the housing 1, a feeding rack 5 is provided inside the housing 1, and a feeding channel connected axially to the heating tube 4 is provided inside the feeding rack 5, the upper end of the feeding channel is open and perpendicular to the feeding groove 11; the push rod 3 can push the gutta-percha stick in the feeding channel into the heating tube 4.

[0040] Regarding gutta-percha filling, the heating element 4 inside the outer shell 1 features an extended design, with an inner cavity length capable of accommodating at least two gutta-percha sticks (each stick being approximately 20 cm in length). This design significantly increases the amount of gutta-percha that can be filled compared to previous filling devices that could only hold one stick at a time. In practical use, dentists do not need to frequently add gutta-percha sticks; a single filling can meet the needs of multiple short-term uses, effectively improving surgical efficiency and reducing potential disruptions to the surgical procedure caused by frequent gutta-percha additions.

[0041] The pusher 3, exposed outside the outer casing 1, has two slots 31 and 32, which indicate the initial positions of the two gutta-percha sticks. Scale markings are located on the pusher 3, extending from the slots 31 and 32. During the procedure, the dentist can visually determine the remaining amount of gutta-percha by observing the scale markings on the pusher, allowing for advance preparation to replenish the gutta-percha and ensuring a smooth procedure.

[0042] Furthermore, the material feeding slot 11 on the outer casing 1 and the internal material feeding rack structure facilitate the placement of the gutta-percha sticks. The material feeding slot 11 corresponds perpendicularly to the feeding channel within the material feeding rack 5, and the feeding channel is axially connected to the heating element 4, allowing the gutta-percha sticks to be smoothly pushed into the heating element 4 by the push rod 3. This design also facilitates cleaning of the gutta-percha sticks after surgery, improving the ease of operation and hygiene of the equipment.

[0043] The gutta-percha filling instrument provided in this embodiment uses a mechanical method to push the push rod 3 forward, which is simple in structure and reliable in operation. Specifically, a handle 6 is pivotally mounted on the outer shell 1, and a coil spring is cleverly installed at the connection between the handle 6 and the outer shell 1. The elasticity of the coil spring allows the handle 6 to automatically be in the initial outward-facing state when no external force is applied, facilitating subsequent operations by the dentist.

[0044] The outer casing 1 contains a transmission assembly that is connected to the handle 6. The handle 6 is connected to the push rod 3 through this transmission assembly, thereby driving the push rod 3 to move axially along the heating element 4. To enable the push rod 3 to automatically reset, a reset spring 7 is provided on the push rod 3, with one end abutting against the heating element 4 and the other end abutting against the transmission assembly.

[0045] The transmission assembly consists of an extrusion connecting rod 8 sleeved on the push rod 3 and a transmission component 9. One end of the transmission component 9 is hinged to the lower end of the extrusion connecting rod 8, and the other end is hinged to the upper end of the push rod 3. A platform for the transmission component 9 to lie flat is provided inside the housing 1. The extrusion connecting rod 8 pushes the push rod 3 to move by friction. This friction-driven method satisfies the pushing requirements while being simple and easy to implement. In addition, a thrust inner ring 10 sleeved on the push rod 3 is provided inside the housing 1. Its function is to make the retraction resistance of the push rod 3 greater than the force on the extrusion connecting rod 8 when it retracts, thus preventing the push rod 3 from accidentally retracting when not in operation.

[0046] Preferably, the extrusion connecting rod 8 is provided with a groove for one end of the return spring 7 to abut against. This design can better fix the position of the return spring 7 and ensure its working stability.

[0047] In the gutta-percha filling device of this embodiment, a support platform 12 is provided inside the outer shell 1, and the thrust inner ring 10 is securely placed inside the support platform 12. Under the action of the return spring 7, one side of the extrusion connecting rod 8 will naturally abut against the support platform 12. This design ensures the stability and reliability of the structure.

[0048] The backrest 12 has an internal grid structure, which reduces the overall weight while ensuring strength. The backrest 12 also has an axial channel for inserting the push rod 3 to avoid interference with the push rod 3.

[0049] The pusher 3 has a sleeve 33 at its tail, and the outer diameter of the sleeve 33 is larger than the inner diameter of the inner retaining ring 10. When one end of the sleeve 33 abuts against the inner retaining ring 10, the maximum distance the pusher 3 can move forward is limited, preventing damage caused by excessive movement of the pusher 3. In addition, the sleeve 33 is provided with a scale marking, which is part of the overall scale marking. By observing the scale, the dentist can intuitively understand the movement distance of the pusher 3, and thus grasp the filling status of the gutta-percha.

[0050] Of course, the gutta-percha filling device provided by this utility model has a built-in battery and a control board. The control board is used to control the battery to supply power to the heating tube 4.

[0051] In use, place the first teething stick into the feeding slot 11, then push it into the heating element 4 using the push rod 3 until the slot 31 is aligned with the tail of the outer casing 1. Next, place the second teething stick into the feeding slot 11, and similarly push it into the heating element 4 using the push rod 3 until the slot 32 is aligned with the tail of the outer casing 1. During use, the push rod 3 moves forward, and the remaining amount of teething rubber can be clearly seen through the scale on the push rod. The overall structure is simple, easy to manufacture, and low in cost.

[0052] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-fill gutta-percha instrument with graduated markings, comprising a housing, a dispensing needle passing through the front end of the housing, and a push rod passing through the rear end of the housing; a heating tube communicating with the dispensing needle is disposed inside the housing, and one end of the push rod is inserted into the heating tube and can reciprocate along the axial direction of the heating tube, characterized in that: The outer shell is provided with a feeding groove, and the outer shell is provided with a feeding rack. The feeding rack is provided with a feeding channel that is axially connected to the heating tube. The upper end of the feeding channel is open and perpendicular to the feeding groove. The push rod can push the rubber rod in the feeding channel into the heating tube. The length of the inner cavity of the heating tube can accommodate at least two rubber sticks; the push rod exposed outside the outer shell is provided with two slots, which are used to indicate the initial position of the two rubber sticks, and scale markings are provided on the push rod with the slots as the base point.

2. The multi-fill gutta-percha filling instrument according to claim 1, characterized in that: A handle is pivotally mounted on the outer casing, and a coil spring is provided at the connection between the handle and the outer casing. The coil spring keeps the handle in an initial outward-facing state when not under force. A transmission assembly is provided inside the outer casing, which is connected to the handle. The handle is connected to the push rod through the transmission assembly, driving the push rod to move axially along the heating element. A return spring is provided on the push rod, with one end abutting against the heating element and the other end abutting against the transmission assembly.

3. The multi-fill gutta-percha filling instrument according to claim 2, characterized in that: The transmission assembly includes an extrusion connecting rod and a transmission component sleeved on the push rod. One end of the transmission component is hinged to the lower end of the extrusion connecting rod, and the other end of the transmission component is hinged to the upper end of the push rod. A platform for the transmission component to lie flat is provided inside the housing. The extrusion connecting rod pushes the push rod to move through friction. A thrust inner ring is sleeved on the push rod inside the housing. The thrust inner ring provides greater resistance to the push rod's retraction than the force exerted on the extrusion connecting rod during retraction.

4. The multi-fill gutta-percha filling instrument according to claim 3, characterized in that: The extrusion connecting rod has a groove for one end of the return spring to abut.

5. The multi-fill gutta-percha filling instrument according to claim 3, characterized in that: A support platform is provided inside the housing, and the thrust inner ring is disposed inside the support platform. The extruded connecting rod abuts against the support platform on one side under the action of the return spring.

6. The multi-fill gutta-percha filling instrument according to claim 5, characterized in that: The backrest has a grid-like structure inside, with a channel axially provided on its upper part for inserting push rods.

7. The multi-fill gutta-percha filling instrument according to claim 5, characterized in that: The push rod has a sleeve at its tail end, and the outer diameter of the sleeve is larger than the inner diameter of the thrust inner ring.

8. The multi-fill gutta-percha filling instrument according to claim 7, characterized in that: The sleeve is provided with the scale markings.

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