Palm pushing type negative pressure root canal flushing injector with openings in two sides

Abstract

The invention discloses a double-side-opening palm pushing type negative pressure root canal irrigation syringe, and relates to the technical field, the double-side-opening palm pushing type negative pressure root canal irrigation syringe comprises a negative pressure suction tube, the outer wall of the negative pressure suction tube is fixedly sleeved with a blocking cover, the negative pressure suction tube is axially provided with a negative pressure channel, the blocking cover is internally provided with an irrigation fluid channel, and one end of an irrigation needle is fixedly inserted into the side wall of the blocking cover; the end of the flushing needle head is of a closed structure, a first opening and a second opening which are oppositely arranged are formed in the side wall of the end of the flushing needle head, the blocking cover is detachably connected with the needle cylinder, a piston is inserted into the needle cylinder in a sliding mode, and a piston handle is fixedly inserted into the axial side wall of the piston. The root canal flushing device is suitable for root canal flushing in the root canal treatment process, chippings generated in the root canal preparation process can be removed in time through the negative pressure suction effect of the root canal flushing device, the possibility that a flushing fluid is pressed out of a root tip hole is reduced through the flushing needle head with the openings in the two sides, the disinfection and cleaning capacity of a flushing agent on a root canal system is improved, and meanwhile the root canal flushing device is convenient to use. The palm-pushing type handle is convenient for doctors to operate, and the flushing safety and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of dental medical instruments, in particular to a palm-push type negative pressure root canal irrigation syringe with double side openings. Background Art

[0002] Root canal therapy is currently the most effective and commonly used method for treating pulp disease and periapical periodontitis. It uses special root canal instruments and methods to clean and shape the root canals, and effective drugs to disinfect and sterilize the root canals. Finally, strict root canal filling is performed to control infection. After pulp necrosis, a large amount of necrotic tissue is attached to the inner wall of the root canal, so bacterial biofilm can exist widely in the root canal. After root canal preparation, bacteria in most parts of the root canal can be removed, but bacterial biofilm still exists in parts that are difficult for instruments to reach. Therefore, most of the microorganisms in the root canal of the affected tooth must be removed through root canal irrigation, and debridement and disinfection of areas where instruments are not cleaned enough must be strengthened to prevent inflammation from recurring.

[0003] At present, root canal flushing drugs include sodium hypochlorite, EDTA, hydrogen peroxide, chlorhexidine, etc., but conventional flushing drugs such as sodium hypochlorite may irritate the periapical tissues beyond the apical foramen. Root canal flushing requires the use of a syringe combined with a flushing needle, and the clinical use generally uses a needle with a bottom opening or a unilateral opening and a finger-push syringe, which are connected by a piston. There are the following shortcomings: 1. Needle: The needle with a bottom opening exerts a large pressure on the root apex. If the flushing speed is too high, the flushing liquid will directly overflow the root apex into the periapical tissue and cause damage to it, and the safety is poor; although the needle with a unilateral opening reduces the pressure of the flushing liquid on the root apex due to the bottom closure, the flushing liquid is not easy to overflow, but due to the bottom closure, part of the flushing liquid remains inside the needle, and the liquid replacement rate inside the irregular root canal is low and the flushing effect is poor. 2. Syringe: For the operator, the finger-push syringe is not conducive to controlling the flushing flow and speed because it only uses the thumb to push the operation, and the hand-held syringe is not easy to stabilize. 3. Connection: A simple interlocking connection may be unstable, and the irrigation needle may come out due to pressure, which may cause the irrigation fluid to splash. 4. Human resources: During root canal treatment, the surgeon usually needs to have an assistant to suck the root canal while the surgeon is irrigating. This requires high human resources and low treatment efficiency. Summary of the invention

[0004] The object of the present invention is to provide a palm-push negative pressure root canal irrigation syringe with double side openings to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a palm-push negative pressure root canal irrigation syringe with double side openings, comprising:

[0006] A negative pressure suction tube, wherein a blocking cover is fixedly sleeved on the outer wall of the negative pressure suction tube, a negative pressure channel is axially arranged on the negative pressure suction tube, and one end of the negative pressure suction tube is a suction port;

[0007] A flushing needle, wherein a flushing liquid channel is provided in the blocking cover, one end of the flushing needle is fixedly plugged into the side wall of the blocking cover, and the flushing needle and the suction port of the negative pressure suction tube face the same direction;

[0008] The end of the flushing needle is a closed structure, and the side wall of the end of the flushing needle is provided with an opening 1 and an opening 2 which are arranged opposite to each other, and the opening 1 and the opening 2 are connected to the flushing liquid channel;

[0009] The syringe, the blocking cover is detachably connected to the syringe, a piston is slidably inserted in the syringe, and a piston handle is fixedly inserted on the axial side wall of the piston, and the end of the piston handle extends from the other end of the syringe.

[0010] In a further embodiment, the flushing needle and the syringe barrel form an angle of 45°.

[0011] In a further embodiment, one end of the piston handle extending from the other end of the syringe is fixedly connected to a palm-push handle.

[0012] In a further embodiment, an index finger grip ring and an auxiliary push block are provided on the outer wall of one end of the syringe close to the palm-push handle, and the index finger grip ring and the auxiliary push block are located on both sides of the syringe. A grip ring and an auxiliary device are provided at the tail of the syringe to assist in use. The handle is designed to fit closely to the palm, which is more labor-saving and convenient for the operator to perform long-term root canal flushing operations clinically.

[0013] In a further embodiment, the side wall of the irrigation needle is provided with root canal length markings, which are 17 mm, 19 mm and 22 mm respectively, so as to control the working length during root canal irrigation and prevent the irrigation needle from exceeding the apical foramen.

[0014] In a further embodiment, the other end of the negative pressure suction tube is connected to a suction tube, and the suction tube is connected to the strong and weak suction ports of the dental chair to form a negative pressure linkage device, which reduces the backflow of flushing drugs and avoids pushing residual substances and flushing fluid in the root canal out of the apical foramen, thereby reducing stimulation to the periapical tissues; at the same time, the negative pressure device provides convenience for the operator to complete the flushing and suction work alone, thereby improving treatment efficiency.

[0015] In a further embodiment, one end of the syringe is connected to a threaded connection port, and the end of the blocking cover facing the syringe is provided with a threaded connection seat threadedly connected to the threaded connection port, which is tightly fixed to effectively prevent the flushing needle from falling out due to flushing pressure and avoid splashing of flushing liquid.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses a flushing needle with double-sided openings, which can deeply clean the inside of the root canal, reduce the overflow of the flushing liquid from the apical foramen, and do not damage the periapical tissue. The openings 1 and 2 are located in the same plane, which ensures the balance of the flushing liquid, better controls the flushing range, and makes it easier to push the liquid. In addition, the flushing method with double-sided openings can provide a strong lateral flushing water flow, which is beneficial for cleaning the dentin debris and bacterial biofilm deep in the root canal.

[0018] 2. The present invention adds a negative pressure suction function. The negative pressure suction tube is inserted into the pulp cavity and performs negative pressure suction, which can timely replace the contaminated flushing liquid, better clean the root canal debris, remove the smear layer and destroy the biological bacterial film, making the root canal flushing convenient and efficient. Only the operator can achieve flushing and suction at the same time, changing the traditional clinical method in which the operator is responsible for flushing and the assistant is responsible for suction, thereby improving clinical work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the syringe structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the local structure of the present invention.

[0022] In the figure: 1. opening one; 2. opening two; 3. negative pressure suction tube; 4. flushing needle; 5. blocking cover; 6. negative pressure channel; 7. flushing liquid channel; 8. threaded connection seat; 9. threaded connection port; 10. syringe; 11. auxiliary push block; 12. suction tube; 13. index finger grip ring; 14. piston handle; 15. piston; 16. palm push handle. DETAILED DESCRIPTION

[0023] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment, this embodiment provides a double-sided opening palm-push negative pressure root canal irrigation syringe, such as Figure 1 and Figure 2As shown, it includes: a negative pressure suction tube 3, a blocking cover 5 is fixedly sleeved on the outer wall of the negative pressure suction tube 3, the blocking cover 5 is placed on the outer periphery of the negative pressure suction tube 3, the negative pressure suction tube 3 is axially provided with a negative pressure channel 6, one end of the negative pressure suction tube 3 is an adsorption port, and the other end of the negative pressure suction tube 3 is connected to a suction tube 12, and the suction tube 12 is connected to the strong and weak suction ports of the dental chair to form a negative pressure linkage device. The negative pressure suction tube 3 is connected to the suction tube 12 (negative pressure passage), and is separated from the flushing liquid channel 7 connected to the flushing needle 4. The suction tube 12 is connected to the negative pressure suction hose, and can be connected to the strong and weak suction ports of the dental chair to form a negative pressure linkage device. This method can reduce the backflow of flushing drugs and avoid the residual substances and flushing fluid in the root canal from being pushed out of the apical foramen, thereby reducing the stimulation of the periapical tissue. At the same time, the negative pressure device provides convenience for the operator to complete the flushing and suction work alone, thereby improving the treatment efficiency.

[0025] Flush needle 4, as Figure 3 As shown, a flushing liquid channel 7 is provided in the blocking cover 5, and the flushing liquid channel 7 is isolated from the negative pressure channel 6 in the blocking cover 5 to form an independent flushing channel and suction channel, which do not interfere with each other, thereby achieving separation of the flushing liquid and the suction liquid.

[0026] Moreover, one end of the flushing needle 4 is fixedly plugged into the side wall of the blocking cover 5, and the flushing needle 4 and the suction port of the negative pressure suction tube 3 face the same direction, and the end position of the flushing needle 4 extends longer than the end position of the negative pressure suction tube 3. Figure 1 As shown, the purpose of such a configuration is to allow the end of the irrigation needle 4 to penetrate deep into the root canal for irrigation without being affected by the length of the negative pressure suction tube 3. This prevents the irrigation needle 4 from entering the root canal and the end of the negative pressure suction tube 3 from abutting against the tissue surrounding the root canal, causing the irrigation needle 4 to be unable to be used normally.

[0027] The end of the flushing needle 4 is a closed structure, and the side wall of the end of the flushing needle 4 is provided with an opening 1 and an opening 2 which are arranged opposite to each other, and the opening 1 and the opening 2 are connected with the flushing liquid channel 7, and the opening 1 and the opening 2 form a double-sided opening at the end of the flushing needle 4 for root canal flushing, which reduces the possibility of flushing liquid flowing out of the apical hole, and improves the disinfection and cleaning ability of the flushing agent on the root canal system. The method solves the problem that the traditional flushing needle 4 adopts a single-sided opening, thereby avoiding that part of the flushing liquid remains inside the flushing needle 4, and the liquid replacement rate is low and the flushing effect is poor inside the irregular root canal.

[0028] By using the flushing needle 4 with double-sided openings, the inside of the root canal can be deeply cleaned, the overflow of the flushing liquid from the apical foramen can be reduced, and the periapical tissue will not be damaged. In addition, the opening 1 and the opening 2 2 are located in the same plane, which ensures the balance of the flushing liquid, better controls the flushing range, and makes it easier to push the liquid. In addition, the flushing method with double-sided openings can provide a strong lateral flushing water flow, which is beneficial for cleaning the dentin debris and bacterial biofilm deep in the root canal.

[0029] The syringe 10 and the blocking cover 5 are detachably connected to the syringe 10. Figure 3 As shown, specifically, a threaded connection port 9 is connected to one end of the syringe 10, and a threaded connection seat 8 is provided at the end of the blocking cover 5 facing the syringe 10, which is threadedly connected to the threaded connection port 9. The root canal syringe and the irrigation needle 4 are designed with a spiral port, and the threaded connection seat 8 is threadedly connected to the threaded connection port 9, which is tightly fixed to form a closed flow passage. In addition, it can also effectively prevent the irrigation needle 4 from coming out due to a large irrigation pressure, causing accidents such as the irrigation liquid splashing into the eyes.

[0030] A piston 15 is slidably inserted in the syringe 10, and a piston handle 14 is fixedly inserted in the axial side wall of the piston 15, and the end of the piston handle 14 extends from the other end of the syringe 10. By holding the syringe 10 still and pressing the piston handle 14, the piston 15 can be pushed in the axial direction in the syringe 10, thereby compressing or expanding the volume of the enclosed space between the threaded connection port 9 and the piston 15 in the syringe 10, thereby providing flushing and negative pressure suction.

[0031] like Figure 1 As shown, the irrigation needle 4 and the syringe 10 form an angle of 45°. The angle between the irrigation needle 4 and the syringe 10 can also be set to 60°, 75° or other angles. As long as it is convenient to insert the irrigation needle 4 into the oral cavity at an inclined angle without blocking the medical staff's operating line of sight, the tip of the irrigation needle 4 can be accurately inserted into the root canal.

[0032] Furthermore, one end of the piston handle 14 extending from the other end of the syringe 10 is fixedly connected to a palm-push handle 16, and an index finger grip ring 13 and an auxiliary push block 11 are provided on the outer wall of one end of the syringe 10 close to the palm-push handle 16. The index finger grip ring 13 and the auxiliary push block 11 are located on both sides of the syringe 10. Figure 1 As shown, the palm-push handle 16 and the syringe 10 form a palm-push syringe, which is equipped with an index finger grip ring 13 and an auxiliary push block 11, which improves the stability and precision of operation, and is convenient for the operator to operate for a long time, thereby improving the efficiency of root canal flushing.

[0033] In this embodiment, further, the side walls of the irrigation needle 4 are provided with root canal length marks, which are 17 mm, 19 mm and 22 mm respectively, so as to control the working length during root canal irrigation and prevent the irrigation needle 4 from exceeding the apical foramen.

[0034] Combination Figure 1 , Figure 2 and Figure 3As shown, the method of use of the present invention is as follows: when in use, first tighten the threaded connection seat 8 and the threaded connection port 9 of the syringe 10, pull the palm-push handle 16 outward to absorb the flushing liquid, insert the flushing needle 4 into the patient's root canal according to actual needs and refer to the root canal length mark, put the index finger into the index finger grip ring 13, the thumb fits the palm-push handle 16, and the other three fingers are located on the auxiliary push block 11, and the flushing liquid is injected together to perform root canal flushing. At the same time, the negative pressure suction function is added, the negative pressure suction tube 3 is inserted into the medullary cavity and performs negative pressure suction, which can timely replace the contaminated flushing liquid, better clean the root canal debris, remove the smear layer and destroy the biological bacterial film, making the root canal flushing convenient and efficient, and only the operator can achieve flushing and suction, changing the traditional clinical method of the operator being responsible for flushing and the assistant being responsible for suction, thereby improving clinical work efficiency.

[0035] In summary, in the above operation, flushing and negative pressure extraction are carried out simultaneously in the narrow oral cavity, without the need for cooperation of multiple people, thus improving the efficiency of single-person operation.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A palm-push negative pressure root canal irrigation syringe with double side openings, characterized in that: include: A negative pressure suction tube (3), wherein a blocking cover (5) is fixedly sleeved on the outer wall of the negative pressure suction tube (3), a negative pressure channel (6) is axially provided on the negative pressure suction tube (3), and one end of the negative pressure suction tube (3) is a suction port; A flushing needle (4), wherein a flushing liquid channel (7) is provided in the blocking cover (5), one end of the flushing needle (4) is fixedly plugged into the side wall of the blocking cover (5), and the flushing needle (4) and the suction port of the negative pressure suction tube (3) face the same direction; The end of the flushing needle (4) is a closed structure, and the side wall of the end of the flushing needle (4) is provided with an opening 1 (1) and an opening 2 (2) which are arranged opposite to each other, and the opening 1 (1) and the opening 2 (2) are connected to the flushing liquid channel (7); The syringe (10) is provided with a blocking cover (5) which is detachably connected to the syringe (10). A piston (15) is slidably inserted in the syringe (10), and a piston handle (14) is fixedly inserted on the axial side wall of the piston (15). The end of the piston handle (14) extends out from the other end of the syringe (10).

2. The palm-push negative pressure root canal irrigation syringe with double side openings according to claim 1, characterized in that: The flushing needle (4) and the syringe (10) form an angle of 45°.

3. The palm-push negative pressure root canal irrigation syringe with double side openings according to claim 1, characterized in that: One end of the piston handle (14) extending from the other end of the syringe (10) is fixedly connected to a palm-push handle (16).

4. The palm-push negative pressure root canal irrigation syringe with double side openings according to claim 3, characterized in that: An index finger grip ring (13) and an auxiliary push block (11) are provided on the outer wall of one end of the syringe (10) close to the palm-push handle (16), and the index finger grip ring (13) and the auxiliary push block (11) are located on both sides of the syringe (10).

5. The palm-push negative pressure root canal irrigation syringe with double side openings according to claim 1, characterized in that: The side wall of the flushing needle (4) is provided with root canal length markings, which are 17 mm, 19 mm and 22 mm respectively.

6. The palm-push negative pressure root canal irrigation syringe with double side openings according to claim 1, characterized in that: The other end of the negative pressure suction tube (3) is connected to a suction tube (12), and the suction tube (12) is connected to the strong and weak suction ports of the dental chair to form a negative pressure linkage device.

7. The palm-push negative pressure root canal irrigation syringe with double side openings according to claim 1, characterized in that: One end of the syringe (10) is connected to a threaded connection port (9), and the end of the blocking cover (5) facing the syringe (10) is provided with a threaded connection seat (8) threadedly connected to the threaded connection port (9).

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