Tooth pulp aspirator

Abstract

The invention discloses a tooth pulp aspirator, and relates to the technical field of medical instruments. Comprising a suction tube, a suction structure and an auxiliary structure, by means of the structure, in the suction process, the cutting block is driven to rotate to be matched with the scraping block to achieve cutting and filing of dental pulp, so that the dental pulp is cut and crushed so as to facilitate suction, and due to the fact that the cut and crushed dental pulp is smaller and higher in mobility, the situation that blockage is likely to be caused by traditional suction is reduced; by means of the mode, the pain caused by direct suction and pulling of dental pulp nerves can be reduced by cutting the dental pulp, and the comfort during dental pulp suction is improved; the residue of the dental pulp is reduced by cutting the dental pulp, so that the effect of sucking and removing the pulp is improved, and the residue of the dental pulp in the pulp chamber is reduced; the problems that according to a traditional aspirator, the root canal wall is prone to being damaged, the aspiration and demarrow effect is poor, residues are prone to being left, and the aspiration efficiency is low are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a dental pulp aspirator. Background Art

[0002] The pulp tissue is located in the pulp cavity inside the tooth. The appearance of the pulp cavity is roughly similar to that of the tooth body. The pulp cavity at the crown of the tooth is larger, called the pulp chamber, and the pulp cavity at the root is smaller, called the root canal. There is a small hole at the root tip, called the apical foramen. The pulp tissue mainly contains nerves, blood vessels, lymph and connective tissue, as well as odontoblasts arranged around the pulp, whose function is to produce odontoblasts.

[0003] When the pulp congestion lasts for a long time, it turns into acute pulpitis. During the treatment of pulpitis, the pulp needs to be extracted and filled with other substances. The traditional method of pulp aspiration mainly uses local anesthesia to inactivate the pulp, and then uses a suction device to extract the flushing solution and the infected substances or pulp in the root canal. However, the existing aspirators have the following problems during use: 1. The suction head of a traditional aspirator is usually hard and can easily damage the root canal wall, especially when used in a curved root canal, the suction head can easily damage the root canal wall and even cause root canal perforation; 2. Traditional aspirators mainly use suction to separate the pulp directly from the pulp chamber, but the pulp is closely connected to the pulp chamber, and the direct suction method has a poor pulp removal effect and is prone to residue, and the pulp is prone to block the suction needle, affecting subsequent suction operations; 3. The contact area between the suction head of the traditional aspirator and the root canal wall is small, and the suction efficiency is low. Multiple operations are required to extract the flushing fluid and infected substances in the root canal, which increases the treatment time and the doctor's workload, and also increases the patient's discomfort; 4. The suction force of the traditional aspirator is not easy to adjust. Excessive suction force can easily damage the root canal wall, and too small suction force cannot effectively remove the flushing fluid and infected substances in the root canal.

[0004] In order to solve the above problems in the prior art, the present invention provides an improved dental pulp aspirator. Summary of the invention

[0005] In view of this, the main purpose of the present invention is to provide a dental pulp aspirator to solve the problems of traditional aspirators that easily cause damage to the root canal wall, poor suction and pulp removal effect and easy residue, and low suction efficiency, so as to improve the suction efficiency, safety, cleanliness and ease of operation of the dental pulp aspirator.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A dental pulp aspirator, comprising:

[0008] A suction cylinder, a piston plate is slidably arranged inside the suction cylinder, a pull rod is arranged on one side of the piston plate, the other end of the pull rod passes through the suction cylinder, a liquid discharge pipe is connected to the bottom of the suction cylinder, and a one-way valve is arranged in the liquid discharge pipe;

[0009] A suction structure is detachably arranged at one end of the suction cylinder;

[0010] The auxiliary structure is arranged on a side of the piston plate away from the pull rod and matches the suction structure.

[0011] As one of the preferred embodiments of the present invention, the suction structure comprises:

[0012] A connecting shell is arranged at the front end of the suction cylinder, a guide cavity is formed between the connecting shell and the suction cylinder, and a connecting sleeve and a plurality of through holes are arranged on the inner side wall of the guide cavity, the connecting sleeve is fixedly embedded in the center of the inner side wall of the guide cavity, and the through holes are arranged around the inner side wall of the guide cavity and are communicated with the internal chamber of the suction cylinder;

[0013] The needle body is arranged on the side of the connecting shell away from the suction cylinder, and a connecting screw is arranged at one end of the needle body, the other end of the connecting screw passes through the connecting shell and the connecting sleeve in sequence and extends into the suction cylinder, and a plurality of discharge channels connected to the guide cavity are also opened on the surface of the needle body.

[0014] As one of the preferred embodiments of the present invention, an adjusting cylinder is rotatably arranged in the needle body, an adjusting rod is slidably connected in the adjusting cylinder, the other end of the adjusting rod passes through the adjusting cylinder and is fixedly connected to the connecting screw; and a spiral driving groove is opened on the inner wall of the adjusting cylinder, and a sliding block is provided on the surface of the adjusting rod which is slidably connected to the driving groove.

[0015] As one of the preferred embodiments of the present invention, several groups of blocks are arranged on the outside of the adjustment cylinder, and the same group of blocks are arranged on the same plane and match the slots arranged on the inside of the needle body; and the needle body is also threadedly connected to the connecting shell.

[0016] As one of the preferred embodiments of the present invention, a connecting rod is further provided at one end of the adjusting cylinder close to the needle head of the needle body, the other end of the connecting rod penetrates the needle body and is connected to a rotating plate, the surface of the rotating plate is connected with evenly distributed connecting rods, and the other end of the connecting rod is slidably connected to the needle body.

[0017] As one of the preferred embodiments of the present invention, a cutting block staggered with the introduction hole at the end of the needle body is connected to the side of the connecting rod close to the needle body, and a scraping groove staggered with the cutting block is opened on the surface of the connecting rod, and the middle part of the cutting block is recessed inward to form a groove; a plurality of scraping blocks are also arranged at the end of the needle body, and the scraping blocks are staggered with the introduction hole.

[0018] As one of the preferred embodiments of the present invention, a mounting rod is further provided in the through hole, a hollow groove is provided on the surface of the mounting rod, a mounting plate is further provided on the surface of the mounting rod, the other end of the mounting plate is connected to the inner wall of the through hole, and a sealing block is connected to the end of the mounting rod away from the mounting plate, the sealing block matches a sealing ring slidably connected to the surface of the mounting rod, the inner diameter of the sealing block is larger than the aperture of the sealing ring, and a first spring is further provided between the sealing ring and the mounting plate.

[0019] As one of the preferred embodiments of the present invention, the auxiliary structure includes a fixing rod arranged on the surface of the piston plate, the other end of the fixing rod is provided with a trigger cylinder coaxial with the connecting sleeve, and the other end of the trigger cylinder is provided with a threaded hole matching the connecting screw.

[0020] As one of the preferred embodiments of the present invention, a trigger rod is slidably connected to the inner wall of the fixed rod, one end of the trigger rod passes through the trigger tube and is connected to a trigger block slidably connected to the inner wall of the threaded hole, and a second spring is arranged between the surface of the trigger rod and the inner wall of the fixed rod.

[0021] As one of the preferred embodiments of the present invention, a transparent plate is embedded in the surface of the piston plate, an indicator bar is slidably connected to the inner wall of the piston plate, and the other end of the trigger rod is connected to the indicator bar.

[0022] Compared with the prior art, the present invention provides a dental pulp aspirator having the following beneficial effects:

[0023] 1. Through the setting of the suction structure and the auxiliary structure, the pulp can be cut and filed by driving the cutting block to rotate and cooperate with the scraping block during the suction process, so that the pulp is cut and broken for easy suction. Since the pulp is smaller after cutting and breaking, its fluidity is stronger, thereby reducing the situation that traditional suction easily causes blockage; and this method can reduce the pain caused by direct suction pulling the pulp nerve by cutting the pulp, improve the comfort during pulp suction, and use the cutting of the pulp to reduce the pulp residue to improve the effect of suction and pulp removal, reduce the pulp residue in the pulp chamber, and improve the efficiency of pulp suction;

[0024] 2. By providing a soft suction head and being able to adjust the pressure as needed during use, the damage to the root canal wall is reduced and the risk of root canal perforation is avoided; at the same time, the adjustability of the suction force and the adaptability of the suction head reduce the number of operations and improve the doctor's work efficiency; and the improvement of suction efficiency and the reduction of the number of operations reduce the patient's discomfort and improve the comfort of the treatment process;

[0025] 3. The integral dental pulp aspirator is easy to clean and disinfect through the setting of detachable suction structure, reducing the risk of cross infection; at the same time, through the setting of soft suction head, the contact area between the soft suction head and the root canal wall can be increased, the suction force can be adjusted, and the suction efficiency is significantly improved;

[0026] 4. By setting up the auxiliary structure, during the installation of the needle body, medical staff can judge whether the needle body is installed in place by observing the position of the indicator bar. When the indicator bar fills the transparent plate as a whole, it means that the needle body is installed in place, avoiding the situation where the installation is not in place and the connection is not tight, which affects the suction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying creative work.

[0028] Figure 1 It is a schematic structural diagram of the dental pulp aspirator of the present invention;

[0029] Figure 2 It is a partial cross-sectional schematic diagram of the dental pulp aspirator of the present invention;

[0030] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0031] Figure 4 It is a distribution diagram of the connection screw and the discharge channel of the present invention;

[0032] Figure 5 It is a schematic diagram of the connection between the connecting rod and the rotating plate of the present invention;

[0033] Figure 6 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0034] Figure 7 It is a schematic diagram of the distribution of the adjusting rod, the sliding block and the driving groove of the present invention;

[0035] Figure 8 For the present invention Figure 7 A partial enlarged view of point C in the middle;

[0036] Fig. 9 It is a schematic diagram of the connection between the auxiliary structure and the suction cylinder of the present invention;

[0037] Fig.10 For the present invention Fig. 9A partial enlarged view of point D in the middle.

[0038] In the figure: 1, suction cylinder; 101, pull rod; 102, discharge pipe; 103, piston plate; 2, suction structure; 201, needle body; 202, connecting screw; 203, discharge channel; 204, rotating plate; 205, connecting rod; 206, introduction hole; 207, connecting rod; 208, scraping groove; 209, cutting block; 210, groove; 211, adjusting cylinder; 212, adjusting rod; 213, driving groove; 214, slider ; 215, connecting shell; 216, connecting sleeve; 217, through hole; 218, mounting rod; 219, mounting plate; 220, blocking block; 221, sealing ring; 222, empty groove; 223, first spring; 224, scraper block; 225, clamping block; 226, clamping groove; 3, auxiliary structure; 301, fixing rod; 302, trigger block; 303, indicator strip; 304, transparent plate; 305, trigger rod; 306, trigger tube. DETAILED DESCRIPTION

[0039] The structure of the dental pulp aspirator is further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] Embodiment 1:

[0045] See also Figure 1-Figure 10 , the present invention provides a technical solution:

[0046] A dental pulp aspirator, comprising:

[0047] A suction cylinder 1, a piston plate 103 is slidably connected to the inner wall of the suction cylinder 1, a pull rod 101 is fixedly connected to one side of the piston plate 103, the other end of the pull rod 101 passes through the suction cylinder 1 and extends to the outside of the suction cylinder 1, and the bottom of the suction cylinder 1 is also connected to a drain pipe 102, and a one-way valve is arranged inside the drain pipe 102;

[0048] A suction structure 2, wherein the suction structure 2 is detachably arranged at one end of the suction cylinder 1;

[0049] The auxiliary structure 3 is arranged on a side of the piston plate 103 away from the pull rod 101 .

[0050] In this embodiment, through the setting of the above structure, pulling the pull rod 101 drives the piston plate 103 away from the needle body 201, which can increase the space between the piston plate 103 and the suction cylinder 1, form a negative pressure inside it, and then use the suction structure 2 to achieve the effect of sucking the dental pulp.

[0051] Embodiment 2:

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 and Fig.10As shown, the suction structure 2 is detachably arranged at one end of the suction cylinder 1, including a connecting shell 215 and a needle body 201, the connecting shell 215 is fixedly connected to the front end of the suction cylinder 1, a guide cavity is formed between the connecting shell 215 and the suction cylinder 1, and a connecting sleeve 216 and a plurality of through holes 217 are also arranged on the inner side wall of the guide cavity, wherein the connecting sleeve 216 is fixedly embedded in the center of the inner side wall of the guide cavity, and the through holes 217 are arranged through the inner side wall of the guide cavity and are connected with the internal chamber of the suction cylinder 1; the needle body 201 is arranged on the side of the connecting shell 215 away from the suction cylinder 1, and a connecting screw 202 is arranged at one end of the needle body 201, the other end of the connecting screw 202 sequentially penetrates the connecting shell 215 and the connecting sleeve 216, and extends to the interior of the suction cylinder 1, and a plurality of discharge channels 203 connected with the guide cavity are also opened on the surface of the needle body 201.

[0053] It is worth noting that through the arrangement of the above-mentioned through hole 217, the guide cavity, the discharge channel 203 and the needle body 201, when in use, pulling the pull rod 101 drives the piston plate 103 away from the needle body 201, which can increase the space between the piston plate 103 and the suction cylinder 1, thereby forming a negative pressure inside the suction cylinder 1, so as to achieve the effect of sucking the dental pulp through the through hole 217, the guide cavity, the discharge channel 203 and the needle body 201.

[0054] As one of the preferred embodiments, Figure 7 and Figure 8 As shown, an adjusting cylinder 211 is rotatably connected inside the needle body 201, an adjusting rod 212 is slidably connected inside the adjusting cylinder 211, and the other end of the adjusting rod 212 passes through the adjusting cylinder 211 and is fixedly connected to the surface of the connecting screw 202; a driving groove 213 is provided on the inner wall of the adjusting cylinder 211, and the driving groove 213 is spirally arranged, and a slider 214 is fixedly connected to the surface of the adjusting rod 212 and is slidably connected to the inner wall of the driving groove 213.

[0055] It is worth noting that, through the arrangement of the adjusting cylinder 211 and the adjusting rod 212, since the adjusting cylinder 211 is rotatably arranged in the needle body 201, it cannot slide along the inner wall of the needle body 201. Therefore, when the adjusting rod 212 moves, the slider 214 moves with the adjusting rod 212 and can drive the adjusting cylinder 211 to rotate in the needle body 201 by pushing the inner wall of the spiral-shaped driving groove 213.

[0056] As one of the preferred embodiments, Figure 7 and Figure 8 As shown, a plurality of groups of clamping blocks 225 are disposed on the outer side of the adjusting cylinder 211 . The same group of clamping blocks 225 are disposed on the same plane and are used in conjunction with the clamping slots 226 disposed on the inner side of the needle body 201 .

[0057] It is worth noting that, by providing the block 225 and the slot 226 , the adjustment tube 211 can rotate inside the needle body 201 , but cannot slide along the inner wall of the needle body 201 .

[0058] As one of the preferred embodiments, Figure 4 and Fig. 9 As shown, the outer end surface of the needle body 201 is also provided with an external thread connected to the inner thread of the connecting shell 215.

[0059] It is worth noting that, through the above arrangement, a detachable connection between the needle body 201 and the connecting shell 215 can be achieved, which is convenient for installing and replacing the needle body 201 during use.

[0060] As one of the preferred embodiments, Figure 5 and Figure 6 As shown, the needle end surface of the needle body 201 is also provided with a plurality of evenly distributed introduction holes 206 , and a scraper block 224 staggeredly distributed with the introduction holes 206 is fixedly connected to the surface of the needle body 201 .

[0061] It is worth noting that, by providing the introduction hole 206 and the scraper block 224 , when the inner cavity of the needle body 201 is under negative pressure, the dental pulp can be sucked into the interior of the needle body 201 through the introduction hole 206 .

[0062] As one of the preferred embodiments, Figure 5 and Figure 6 As shown, one end of the adjusting cylinder 211 close to the needle head of the needle body 201 is also fixedly connected to a connecting rod 205, the other end of the connecting rod 205 passes through the needle body 201 and is fixedly connected to a rotating plate 204, the surface of the rotating plate 204 is fixedly connected to evenly distributed connecting rods 207, and the other end of the connecting rod 207 is slidably connected to the surface of the needle body 201.

[0063] It is worth noting that through the setting of the connecting rod 205, when the adjusting cylinder 211 rotates in the needle body 201, the rotating plate 204 can be driven to rotate through the connecting rod 205, and the rotating plate 204 drives the overall scraper structure on the front side to rotate through the connecting rod 207 to cut and separate the pulp.

[0064] As one of the preferred embodiments, Figure 5 and Figure 6 As shown, a cutting block 209 staggered with the introduction hole 206 is fixedly connected to the side of the connecting rod 207 close to the needle body 201 , and a scraping groove 208 staggered with the cutting block 209 is opened on the surface of the connecting rod 207 . The middle part of the cutting block 209 is recessed inward to form a groove 210 .

[0065] It is worth noting that, through the arrangement of the scraper groove 208, the cutting block 209 and the groove 210, the cutting block 209 can rotate while the rotating plate 204 rotates, and can achieve the effect of cutting the pulp through the gap between its edge and the scraper block 224, so that the pulp can be better introduced into the hole 206 and sucked into the interior of the needle body 201, and discharged through the discharge channel 203; the arrangement of the groove 210 can prevent the introduction hole 206 from being completely blocked when the cutting block 209 and the introduction hole 206 coincide with each other, thereby maintaining a good suction effect, and at the same time, after cutting the pulp, it can reduce the situation where the pulp blocks the needle body 201, avoiding the blockage during the suction process that affects the subsequent suction. Compared with the traditional direct suction method, this method can reduce the pain caused by direct suction pulling the pulp nerve by cutting the pulp, thereby improving the comfort during pulp suction, and in the process of the rotation of the cutting block 209, the scraper block 224 can clean the surface of the scraper block 224 through the scraper groove 208 to reduce adhesion. At the same time, directly rotating the suction cylinder 1 can drive the needle body 201 to rotate, and the scraping block 224 can be used to file the pulp. The cutting block 209 can further improve the cutting and crushing effect of the pulp, which is more conducive to the suction work.

[0066] As one of the preferred embodiments, Fig. 9 and Fig.10 As shown, a mounting rod 218 is provided inside the through hole 217, a hollow groove 222 is provided on the surface of the mounting rod 218, a mounting plate 219 is fixedly connected to the surface of the mounting rod 218, the other end of the mounting plate 219 is fixedly connected to the inner wall of the through hole 217, a blocking block 220 is fixedly connected to one end of the mounting rod 218 away from the mounting plate 219, and a sealing ring 221 is slidably connected to the surface of the mounting rod 218. The inner diameter of the blocking block 220 is larger than the aperture of the sealing ring 221, and a first spring 223 is fixedly connected between the sealing ring 221 and the mounting plate 219.

[0067] It is worth noting that when the sucked dental pulp enters the connecting shell 215 through the discharge channel 203 and is sucked into the through hole 217, the sealing ring 221 can be pushed to move along the surface of the mounting rod 218 under the action of the pressure difference, and the first spring 223 is compressed at the same time. When the sealing ring 221 moves to the middle of the mounting rod 218, the sucked dental pulp can pass through the sealing ring 221 and the through hole 217 through the empty groove 222 and be introduced into the interior of the suction cylinder 1. When the piston plate 103 is pushed in the reverse direction, the sealing ring 221 can be reset under the action of the first spring 223, and the inner hole of the sealing ring 221 can be blocked with the help of the blocking block 220 to prevent the sucked dental pulp from being discharged through the needle body 201.

[0068] In order to avoid damaging the root canal wall, the rotating plate 204, the connecting rod 207, and the cutting block 209 are all made of soft materials to avoid damaging the root canal wall and causing the risk of root canal perforation.

[0069] Embodiment 3:

[0070] like Figure 3 and Fig. 9 As shown, the auxiliary structure 3 includes a fixing rod 301 fixedly connected to the surface of the piston plate 103, the other end of the fixing rod 301 is fixedly connected to a trigger tube 306 coaxially arranged with the connecting sleeve 216, and the other end of the trigger tube 306 is provided with a threaded hole matching the connecting screw 202; a trigger rod 305 is slidably connected to the inner wall of the fixing rod 301, one end of the trigger rod 305 passes through the trigger tube 306 and is fixedly connected to a trigger block 302 slidably connected to the inner wall of the threaded hole, and a second spring is fixedly connected between the surface of the trigger rod 305 and the inner wall of the fixing rod 301; a transparent plate 304 is embedded and installed on the surface of the piston plate 103, an indicator bar 303 is slidably connected to the inner wall of the piston plate 103, and the other end of the trigger rod 305 is fixedly connected to the surface of the indicator bar 303.

[0071] It is worth noting that during the installation of the suction structure 2, the connecting screw 202 can pass through the connecting sleeve 216 and be screwed tightly with the threaded hole. During the process of the connecting screw 202 being screwed into the threaded hole, the trigger block 302 can be pushed to move synchronously, so that it drives the trigger rod 305 to stretch the second spring, and at the same time drives the indicator bar 303 to move synchronously. After installation, the indicator bar 303 is located as a whole at the transparent plate 304. It should be noted that the suction cylinder 1 is a material component made of transparent material. It is possible to observe through the suction cylinder 1 and the transparent plate 304 whether the indicator bar 303 fills the transparent plate 304 as a whole, thereby judging whether the suction structure 2 is installed in place, avoiding the situation where the suction effect is reduced due to loose connections at the connection caused by improper installation.

[0072] The working principle and working process of the dental pulp aspirator of the present invention include:

[0073] The needle body 201 is placed at the position where the pulp needs to be sucked out. By pulling the pull rod 101, the cutting block 209 can be driven to rotate during the suction process under the cooperation of the auxiliary structure 3 and the suction structure 2, and the effect of cutting the pulp is achieved through the gap between its edge and the scraper block 224, so that the pulp can be better introduced into the hole 206 and sucked into the interior of the needle body 201, and discharged through the discharge channel 203. The setting of the groove 210 can prevent the introduction hole 206 from being completely blocked when the cutting block 209 and the introduction hole 206 are overlapped, so as to maintain a good suction effect. At the same time, the pulp can reduce the blockage of the needle body 201 after cutting the pulp. The present invention can avoid the blockage during the suction process that affects the subsequent suction. Compared with the traditional direct suction method, this method can reduce the pain caused by direct suction pulling the pulp nerve by cutting the pulp, thereby improving the comfort during pulp suction. In addition, during the rotation of the cutting block 209, the scraper block 224 can be cleaned on the surface of the scraper block 224 through the scraper groove 208 to reduce adhesion. At the same time, the direct rotation of the suction cylinder 1 can drive the needle body 201 to rotate, and the scraper block 224 can be used to file the pulp. The cutting block 209 can further improve the cutting and crushing effect of the pulp, which is more conducive to the suction work.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A dental pulp aspirator, characterized in that: include: A suction cylinder (1), wherein a piston plate (103) is slidably disposed inside the suction cylinder (1), a pull rod (101) is disposed on one side of the piston plate (103), and the other end of the pull rod (101) passes through the suction cylinder (1), and a liquid discharge pipe (102) is connected to the bottom of the suction cylinder (1), and a one-way valve is disposed inside the liquid discharge pipe (102); A suction structure (2) is detachably arranged at one end of the suction cylinder (1); The auxiliary structure (3) is arranged on a side of the piston plate (103) away from the pull rod (101) and matches the suction structure (2).

2. A dental pulp aspirator according to claim 1, characterized in that: The suction structure (2) comprises: A connecting shell (215) is arranged at the front end of the suction cylinder (1), a flow guiding cavity is formed between the connecting shell (215) and the suction cylinder (1), and a connecting sleeve (216) and a plurality of through holes (217) are arranged on the inner side wall of the flow guiding cavity, the connecting sleeve (216) is fixedly embedded in the center of the inner side wall of the flow guiding cavity, and the through holes (217) are arranged through the inner side wall of the flow guiding cavity and are communicated with the internal chamber of the suction cylinder (1); The needle body (201) is arranged on a side of the connecting shell (215) away from the suction cylinder (1), and a connecting screw (222) is arranged at one end of the needle body (201), and the other end of the connecting screw (222) passes through the connecting shell (215) and the connecting sleeve (216) in sequence and extends into the suction cylinder (1), and a plurality of discharge channels (203) connected to the guide cavity are also opened on the surface of the needle body (201).

3. A dental pulp aspirator according to claim 2, characterized in that: An adjusting cylinder (211) is rotatably arranged in the needle body (201), an adjusting rod (212) is slidably connected in the adjusting cylinder (211), the other end of the adjusting rod (212) passes through the adjusting cylinder (211) and is fixedly connected to the connecting screw (202); a spiral driving groove (213) is provided on the inner wall of the adjusting cylinder (211), and a sliding block (214) slidably connected to the driving groove (213) is provided on the surface of the adjusting rod (212).

4. A dental pulp aspirator as claimed in claim 3, characterized in that: A plurality of groups of clamping blocks (225) are arranged on the outside of the adjusting cylinder (211); the same group of clamping blocks (225) are arranged on the same plane and match the clamping grooves (226) arranged on the inside of the needle body (201); and the needle body (201) is also threadedly connected to the connecting shell (215).

5. The dental pulp aspirator according to claim 3, characterized in that: A connecting rod (205) is also provided at one end of the adjusting cylinder (211) close to the needle tip of the needle body (201); the other end of the connecting rod (205) penetrates the needle body (201) and is connected to a rotating plate (204); the surface of the rotating plate (204) is connected to evenly distributed connecting rods (207); the other end of the connecting rod (207) is slidably connected to the needle body (201).

6. A dental pulp aspirator according to claim 5, characterized in that: A cutting block (209) staggered with the introduction hole (206) at the end of the needle body (201) is connected to the side of the connecting rod (207) close to the needle body (201), and a scraping groove (208) staggered with the cutting block (209) is provided on the surface of the connecting rod (207), and the middle part of the cutting block (209) is recessed inward to form a groove (210); a plurality of scraping blocks (224) are also provided at the end of the needle body (201), and the scraping blocks (224) are staggered with the introduction hole (206).

7. The dental pulp aspirator according to claim 2, characterized in that: A mounting rod (218) is also arranged in the through hole (217), a hollow groove (222) is provided on the surface of the mounting rod (218), a mounting plate (219) is also arranged on the surface of the mounting rod (218), the other end of the mounting plate (219) is connected to the inner wall of the through hole (217), and a blocking block (220) is connected to the end of the mounting rod (218) away from the mounting plate (219), the blocking block (220) matches a sealing ring 221 slidably connected to the surface of the mounting rod (218), the inner diameter of the blocking block (220) is larger than the aperture of the sealing ring (221), and a first spring (223) is also arranged between the sealing ring (221) and the mounting plate (219).

8. The dental pulp aspirator according to claim 2, characterized in that: The auxiliary structure (3) comprises a fixing rod (301) arranged on the surface of the piston plate (103), the other end of the fixing rod (301) is provided with a trigger cylinder (306) coaxial with the connecting sleeve (216), and the other end of the trigger cylinder (306) is provided with a threaded hole matching the connecting screw (202).

9. A dental pulp aspirator according to claim 8, characterized in that: A trigger rod (305) is slidably connected to the inner wall of the fixed rod (301), one end of the trigger rod (305) passes through the trigger tube (306) and is connected to a trigger block (302) slidably connected to the inner wall of the threaded hole, and a second spring is arranged between the surface of the trigger rod (305) and the inner wall of the fixed rod (301).

10. The dental pulp aspirator according to claim 9, characterized in that: A transparent plate (304) is embedded on the surface of the piston plate (103), an indicator bar (303) is slidably connected to the inner wall of the piston plate (103), and the other end of the trigger rod (305) is connected to the indicator bar (303).

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