Self-venting root canal treatment needle, use method, and injection device

Abstract

The present application relates to a self-exhausting root canal treatment needle and a method of use and an injection device, which comprises: a needle body, a first channel is provided therein, and a liquid inlet and a liquid outlet are formed at the two ends of the needle body respectively; an exhaust pipe with open ends, which is provided in the needle body, one end of which is connected to the external space of the needle body, and a part of the tube body penetrates into the first channel from one side and extends to the other end to extend out of the liquid outlet, and a ring channel is left between the outer wall and the edge of the liquid outlet. The flushing liquid or filling paste can be injected into the root canal more evenly to achieve continuous downward compression of the air at the bottom of the root canal. After being squeezed, the air at the bottom of the root canal can be discharged to the outside through the exhaust pipe of the liquid outlet. The overall process does not require the use of additional negative pressure equipment to suck the inside of the root canal, and the root canal can be quickly flushed or filled while effectively exhausting the residual air therein.

Description

Technical Field

[0001] The present application relates to the field of medical tools, and in particular to a self-venting root canal treatment needle, a method of use, and an injection device. Background Art

[0002] Root canal therapy is currently the main method for treating periapical infection of the pulp. Its main purpose is to remove the infection in the root canal and fill the root canal tightly with materials. To remove the infection in the root canal, it is generally necessary to use instruments to mechanically expand the root canal and combine it with root canal irrigation. That is, after expanding the root canal, a fine needle is used to penetrate into the root canal, especially the apex of the root canal for irrigation to remove the infection in the root canal. In addition, after the root canal is cleaned, the filling paste also needs to be injected into the entire root canal, especially the apex of the root canal, to ensure the tight filling of the entire root canal. Since the apex of the root canal of the tooth is located in the alveolar bone and has no communication with the outside air, the flushing solution or filling paste enters the root canal and squeezes the air in the root canal to form an air plug at the apex, resulting in the flushing solution or filling paste being unable to truly enter the apex of the root canal for flushing and filling, which seriously affects the flushing and filling effect of the apical root canal.

[0003] In related technologies, some scholars have tried to use a negative pressure aspirator connected to a small diameter needle to enter the apex of the root canal, remove the air plug through negative pressure suction, and introduce the flushing liquid or filling paste into the apex of the root canal. However, this method requires the connection of a special negative pressure generating device, has high application and maintenance costs, is inconvenient to use, and also increases the economic burden on patients, which needs further improvement. Summary of the invention

[0004] The embodiments of the present application provide a self-venting root canal treatment needle, a method of use, and an injection device to solve the problem in the related art that air plugs in the root canal must be sucked out by a negative pressure aspirator.

[0005] In a first aspect, a self-venting root canal treatment needle is provided.

[0006] A self-venting root canal treatment needle, comprising:

[0007] A needle body, in which a first channel is provided, and a liquid inlet and a liquid outlet are formed at two ends of the needle body respectively;

[0008] An exhaust pipe with open ends is arranged in the needle body, one end of which is connected to the external space of the needle body, part of the pipe body penetrates into the first channel from one side and extends to the other end to protrude out of the liquid outlet, and a ring channel is left between its outer wall and the peripheral edge of the liquid outlet.

[0009] In some embodiments, the exhaust tube is inserted into the needle body in a relatively slidable manner so that the length of the tube extending out of the liquid outlet can be adjusted.

[0010] In some embodiments, the annular channel is a circular ring structure concentric with the liquid outlet.

[0011] In some embodiments, the exhaust pipe is a hard pipe, and the portion of the pipe that penetrates into the first channel is coaxial with the first channel.

[0012] In some embodiments, the first channel includes at least:

[0013] A liquid inlet section, wherein the liquid inlet is provided at one end thereof;

[0014] The liquid outlet section has the liquid outlet disposed at one end thereof away from the liquid inlet section, extends in a straight line and is not coaxial with the liquid inlet section, and the exhaust pipe penetrates into the liquid outlet section and extends coaxially in the liquid outlet section.

[0015] In some embodiments, the exhaust pipe is spaced 0.2 mm from the inner wall of the liquid outlet section.

[0016] In some embodiments, the end surface of the exhaust pipe extending out of the liquid outlet is inclined.

[0017] In a second aspect, a method for using a self-venting root canal treatment needle is provided.

[0018] A method for using a self-venting root canal treatment needle, comprising:

[0019] Insert the needle body and the exhaust tube inside it into the root canal;

[0020] The medical solution is continuously injected into the root canal through the first channel until the medical solution overflows the root canal or the opening at the upper end of the exhaust pipe is connected to the outside.

[0021] In some embodiments, when the medical solution is continuously injected into the root canal through the first channel until the medical solution overflows the root canal, the exhaust pipe is reciprocated to make the end of the exhaust pipe outside the liquid outlet of the first channel move up and down in the root canal.

[0022] In a third aspect, a self-venting injection device for root canal treatment is provided.

[0023] A self-venting endodontic injection device, comprising:

[0024] syringe;

[0025] A self-exhausting root canal treatment needle, wherein the liquid inlet is connected to the syringe.

[0026] The beneficial effects of the technical solution provided by this application include:

[0027] The embodiments of the present application provide a self-exhausting root canal treatment needle, a method of use, and an injection device. When the end of the entire needle is inserted into the root canal, part of the exhaust pipe penetrates into the first channel of the needle body and extends from the liquid outlet of the first channel, leaving a loop with the liquid outlet, so that the flushing liquid or filling paste can be injected into the root canal through the first channel. Moreover, due to the loop between the first channel and the exhaust pipe inside it, the flushing liquid or filling paste can be injected into the root canal more evenly, thereby achieving continuous downward compression of the air at the bottom of the root canal. At this time, the air at the bottom of the root canal can be discharged to the outside through the exhaust pipe of the liquid outlet after being squeezed. Moreover, since the end of the exhaust pipe is closer to the bottom of the root canal, the air at the bottom of the root canal can be more fully discharged, thereby finally completing the effective flushing of the root canal or the filling of the paste. The overall process does not require the use of additional negative pressure equipment to suck the inside of the root canal, and can quickly complete the flushing or filling of the root canal while effectively exhausting the residual air therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a schematic diagram of the overall structure of some embodiments of the present application;

[0030] Figure 2 It is a schematic diagram of the overall structure of some other embodiments of the present application.

[0031] In the figure:

[0032] 1. needle body; 10. first channel; 100. liquid inlet section; 101. liquid outlet section; 11. liquid inlet; 12. liquid outlet;

[0033] 2. Exhaust pipe;

[0034] 3. Syringe;

[0035] 4. Root canal; 40. Apical foramen; DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The embodiment of the present application provides a self-venting root canal treatment needle, a method of use, and an injection device, which can solve the problem in the related art that the air plug in the root canal 4 must be sucked out by a negative pressure aspirator.

[0038] First, refer to Figure 1 The present application provides a self-venting root canal treatment needle, which includes:

[0039] The needle body 1 has a first channel 10 therein, and a liquid inlet 11 and a liquid outlet 12 are formed at two ends of the needle body 1;

[0040] An exhaust pipe 2 with open ends is arranged in the needle body 1, one end of which is connected to the external space of the needle body 1, and part of the pipe body penetrates into the first channel 10 from one side and extends to the other end to protrude out of the liquid outlet 12, and a ring channel is left between its outer wall and the periphery of the liquid outlet 12.

[0041] Among them, the needle body 1 in this embodiment is specifically the injection needle tube of the syringe 3, and it can be other tubes adapted to the patient's oral structure as needed. The first channel 10 is the injection channel of the injection needle tube. One end of the exhaust pipe 2 is open outside the needle body 1 and connected to the external space, and the other end thereof passes through the tube wall of the needle body 1 into the first channel 10, and extends therein to the liquid outlet 12 extending out of the first channel 10, and when the liquid outlet 12 is extended out, a ring channel is left between the liquid outlet 12 and the edge thereof to avoid the exhaust pipe 2 from blocking the first channel 10, and at the same time, the flushing liquid or filling paste sent through the first channel 10 can enter the root canal 4 from all sides of the exhaust pipe 2 at the same time.

[0042] In this way, when the end of the overall needle is inserted into the root canal 4, part of the exhaust pipe 2 penetrates into the first channel 10 of the needle body 1 and extends out from the liquid outlet 12 of the first channel 10, leaving a loop with the liquid outlet 12, so that the flushing liquid or filling paste can be injected into the root canal 4 through the first channel 10, and due to the loop between the first channel 10 and the exhaust pipe 2 inside it, the flushing liquid or filling paste can be injected into the root canal 4 more evenly, so that the air at the bottom of the root canal 4 is continuously compressed downward. At this time, the air at the bottom of the root canal 4 can be discharged to the outside through the exhaust pipe 2 of the liquid outlet 12 after being squeezed, and because the end of the exhaust pipe 2 is closer to the bottom of the root canal 4, the air at the bottom of the root canal 4 can be more fully discharged, and finally the effective flushing of the root canal 4 or the filling of the paste is completed. The overall process does not require the use of additional negative pressure equipment to suck the inside of the root canal 4, and can quickly complete the flushing or filling of the root canal 4 while effectively discharging the residual air therein.

[0043] Optionally, when the exhaust tube 2 penetrates the needle body 1 , it is in a relatively slidable and movable fit so that the length of the tube body extending out of the liquid outlet 12 can be adjusted.

[0044] Among them, a through hole connecting the external space and the first channel 10 is opened on the needle body 1, and the exhaust pipe 2 slides into the first channel 10 through the through hole, and the diameter of the through hole is consistent with the outer diameter of the exhaust pipe 2 to prevent the flushing liquid or filling paste sent into the root canal 4 through the first channel 10 from leaking from the through hole.

[0045] With this arrangement, the exhaust tube 2 can be pulled out and slid when in use. Further, when flushing liquid or filling material is delivered into the root canal 4 through the needle body 1, the operator can control the exhaust tube 2 to slide back and forth within a shorter distance. At this time, the air at the bottom of the root canal 4 can enter the exhaust tube 2 more quickly, and finally the air can be discharged more thoroughly, thereby significantly reducing the size of the air plug at the bottom when the root canal 4 is filled with paste.

[0046] Optionally, the annular channel is in a circular ring structure concentric with the liquid outlet 12 .

[0047] This arrangement allows the flushing liquid or filling paste to be more evenly distributed around the exhaust pipe 2 when it is delivered out of the liquid outlet 12, thereby evenly filling the root canal 4 space outside the exhaust pipe 2, so that the air in the space can be smoothly compressed to the bottom and discharged through the exhaust pipe 2.

[0048] Optionally, the exhaust pipe 2 is a hard pipe, and the portion of the pipe that penetrates into the first channel 10 is coaxial with the first channel 10 .

[0049] The exhaust pipe 2 is a hard plastic structure in this embodiment, but may be a metal structure in other embodiments.

[0050] With this arrangement, compared with the deformable soft structure, the exhaust tube 2 can be slidably matched with the needle body 1, so that it can be pushed into or pulled out of the needle body 1 more conveniently and quickly, and the deformation will not affect the operation. At the same time, the exhaust tube 2 in the first channel 10 will not be squeezed and deformed. When the flushing liquid or filling paste enters the exhaust tube 2 through the first channel 10, the exhaust tube 2 will not be deformed, thereby avoiding affecting the internal passage of the exhaust tube 2, so that the air at the bottom of the root canal 4 can continue to pass through the exhaust tube 2 smoothly and efficiently.

[0051] Optionally, refer to Figure 1 , the first channel 10 at least includes:

[0052] The liquid inlet section 100, the liquid inlet 11 is provided at one end thereof;

[0053] The liquid outlet section 101, the liquid outlet 12 is arranged at one end thereof away from the liquid inlet section 100, extends in a straight line and is not coaxial with the liquid inlet section 100, and the exhaust pipe 2 penetrates into the liquid outlet section 101 and extends coaxially in the liquid outlet section 101.

[0054] In this embodiment, the first channel 10 is a curved passage formed by the liquid inlet section 100 and the liquid outlet section 101. The exhaust pipe 2 penetrates into the liquid outlet section 101 at the connecting bend between the liquid outlet section 101 and the liquid inlet section 100, and extends coaxially with the liquid outlet section 101 until it extends out of the first channel 10.

[0055] This arrangement enables the exhaust pipe 2 to be pulled and slid in a straight line in the first channel 10, making it more convenient for external operators to operate during use, and ensures that the annular interval between the inner wall of the liquid outlet section 101 and the exhaust pipe 2 continues to maintain a circular ring channel, which is beneficial to the uniform delivery of the flushing liquid and the filling paste.

[0056] In addition, refer to Figure 2 In other embodiments, the needle body 1 and the first channel 10 as a whole can extend in a straight line, and the exhaust tube 2 is bent to be coaxial with the first channel 10 after penetrating into the first channel 10. However, in the embodiment, the exhaust tube 2 with a hard structure cannot be pumped, and thus cannot be pumped in coordination when the flushing liquid or filling paste is injected into the root canal 4 through the first channel 10 to improve the air exhaust efficiency.

[0057] Furthermore, the exhaust pipe 2 is spaced 0.2 mm from the inner wall of the liquid outlet section 101 .

[0058] With this arrangement, the first channel 10 can deliver the flushing liquid or the filling paste more quickly and smoothly.

[0059] Optionally, the end surface of the exhaust pipe 2 extending out of the liquid outlet 12 is arranged to be inclined.

[0060] This arrangement increases the opening area of ​​the end of the exhaust pipe 2, so that the air in the bottom space of the root canal 4 can enter the exhaust pipe 2 more smoothly, and is efficiently discharged from the exhaust pipe 2 to the outside.

[0061] In a second aspect, an embodiment of the present application provides a method for using a self-venting root canal treatment needle.

[0062] A method for using a self-venting root canal treatment needle, comprising:

[0063] S1, insert the needle body 1 and the exhaust tube 2 therein into the root canal 4;

[0064] S2, continuously injecting liquid medicine into the root canal 4 through the first channel 10 until the liquid medicine overflows from the root canal 4 or the opening of the exhaust pipe 2 connected to the outside.

[0065] Among them, in step S1, it is necessary to further control the end of the needle body 1 to be 5 mm away from the apical foramen 40 of the root canal 4, and the end of the exhaust pipe 2 to be controlled to be 1 mm away from the apical foramen 40 of the root canal 4.

[0066] When performing step S2 , the self-exhausting root canal treatment needle needs to be connected to an infusion tool such as a syringe 3 , so that the infusion tool can deliver relevant liquid medicine into the root canal 4 via the first channel 10 .

[0067] Optionally, when the medicinal liquid is continuously injected into the root canal 4 through the first channel 10 until the medicinal liquid overflows from the root canal 4, the exhaust tube 2 can be reciprocated with a small amplitude or the needle body 1 can be reciprocated to make the end of the exhaust tube 2 outside the liquid outlet 12 of the first channel 10 move up and down in the root canal 4.

[0068] When the exhaust pipe 2 is reciprocated, the movement distance of the end of the exhaust pipe 2 in both directions before and after the starting point should not be greater than 1 mm to prevent the end of the exhaust pipe 2 from contacting the apical foramen 40 of the root canal 4.

[0069] With this arrangement, when the needle body 1 delivers flushing liquid or filling material into the root canal 4, the operator can control the exhaust pipe 2 to pump back and forth within a shorter distance, so that the air at the bottom of the root canal 4 can enter the exhaust pipe 2 more quickly, and finally the air can be discharged more thoroughly, thereby significantly reducing the size of the air plug at the bottom when the root canal 4 is filled with paste.

[0070] Thirdly, refer to Figure 1, an embodiment of the present application provides a self-venting injection device for root canal treatment.

[0071] A self-venting endodontic injection device, comprising:

[0072] Syringe 3;

[0073] The liquid inlet 11 of the self-exhausting root canal treatment needle is connected to the syringe 3 .

[0074] In this embodiment, the open end of the exhaust tube 2 of the self-exhausting root canal treatment needle connected to the outside is directly used in an open state, avoiding the use of a negative pressure device to exhaust the air in the root canal 4. In addition, in other embodiments, when the air in the root canal 4 needs to be exhausted at a faster speed, the exhaust tube 2 can also be connected to a negative pressure device to achieve this need.

[0075] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0076] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0077] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A self-venting root canal treatment needle, characterized in that: It includes: A needle body (1) is provided with a first channel (10) therein, and a liquid inlet (11) and a liquid outlet (12) are formed at two ends of the needle body (1); An exhaust pipe (2) with both ends open is arranged in the needle body (1), one end of which is in communication with the external space of the needle body (1), a part of the pipe body penetrates into the first channel (10) from one side and extends to the other end to protrude out of the liquid outlet (12), and a ring channel is left between the outer wall of the pipe and the peripheral edge of the liquid outlet (12); The annular channel is in the form of an annular structure concentric with the liquid outlet (12); The exhaust pipe (2) is a hard pipe, and the portion of the pipe that penetrates into the first channel (10) is coaxial with the first channel (10) in which it is located.

2. The self-venting root canal treatment needle according to claim 1, characterized in that: When the exhaust pipe (2) penetrates the needle body (1), it is in a relatively slidable and movable fit, so that the length of the pipe extending out of the liquid outlet (12) can be adjusted.

3. The self-venting root canal treatment needle according to claim 1, characterized in that: The first channel (10) comprises at least: A liquid inlet section (100), wherein the liquid inlet (11) is provided at one end thereof; The liquid outlet section (101) has the liquid outlet (12) arranged at one end thereof away from the liquid inlet section (100), extending in a straight line and not coaxial with the liquid inlet section (100), and the exhaust pipe (2) penetrates into the liquid outlet section (101) and extends coaxially in the liquid outlet section (101).

4. The self-venting root canal treatment needle according to claim 3, characterized in that: The exhaust pipe (2) is spaced 0.2 mm from the inner wall of the liquid outlet section (101).

5. The self-venting root canal treatment needle according to claim 1, characterized in that: The end surface of the exhaust pipe (2) extending out of the liquid outlet (12) is arranged in an inclined surface.

6. A self-venting injection device for root canal treatment, characterized in that: It includes: Syringe (3); The self-venting root canal treatment needle as claimed in claim 1, wherein the liquid inlet (11) is connected to the syringe (3).

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