Quantitative dosing device for treating chronic periodontitis

Abstract

The invention belongs to the technical field of medical instruments, and provides a quantitative dosing device for treating chronic periodontitis, which comprises a dosing assembly and a clamping frame, one end of the clamping frame is provided with a holding rod, the other end of the clamping frame is provided with two groups of dosing heads, and the clamping frame is used for enabling the two dosing heads to clamp a periodontal pocket; the quantitative dosing assembly comprises a dosing box, a liquid medicine injection cavity and a cleaning liquid injection cavity are formed in the dosing box, the liquid medicine injection cavity and the cleaning liquid injection cavity are communicated with connectors respectively, a dosing head is communicated with one connector, and a switchable automatic injection mechanism is arranged in the dosing box. The switchable automatic injection mechanism is used for enabling the cleaning fluid in the cleaning fluid injection cavity to enter the dosing head and flushing a dosing part or enabling the liquid medicine in the liquid medicine injection cavity to enter the dosing head and be smeared on a periodontal pocket. The situation that medicine is unevenly smeared can be avoided, meanwhile, quantitative injection of liquid medicine can be achieved, and the problem that the dosage error is large is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a quantitative drug delivery device for treating chronic periodontitis. Background Art

[0002] Chronic periodontitis is the most common type of periodontitis. Chronic periodontitis is a chronic inflammatory disease caused by dental plaque and requires long-term local drug administration for treatment.

[0003] The treatment of chronic periodontitis includes mechanical treatment and drug treatment. Among them, drug treatment includes methods such as taking oral metronidazole tablets and injecting temperature-sensitive gel drugs. The temperature-sensitive gel drug undergoes gelation of the injectable drug through temperature change to form a hydrogel at the drug administration site, which can achieve the effect of drug sustained release. Therefore, gel drug sustained release treatment of chronic periodontitis has become a commonly used clinical method.

[0004] However, the existing method of injecting gel drugs through a traditional syringe still has the defects of relying on manual operation for drug administration, large dosage errors, easy drug waste or insufficient curative effect. At the same time, when holding a syringe to inject and apply the drug, it is easy to have the situation that the drug is unevenly applied near the periodontal pocket. Summary of the Invention

[0005] The purpose of the present invention is to provide a quantitative drug delivery device for treating chronic periodontitis to solve the above problems.

[0006] To achieve the above purpose, the present invention provides the following solution: A quantitative drug delivery device for treating chronic periodontitis, comprising:

[0007] A drug application component, including a clamping frame, one end of the clamping frame is provided with a grip rod, the other end of the clamping frame is provided with two drug delivery heads, and the clamping frame is used to clamp the two drug delivery heads to the periodontal pocket;

[0008] A quantitative drug delivery component, including a drug delivery box, a liquid medicine injection cavity and a cleaning liquid injection cavity are arranged in the drug delivery box, the liquid medicine injection cavity and the cleaning liquid injection cavity are respectively communicated with a connector, the drug delivery head is communicated with one of the connectors, and a switchable automatic injection mechanism is arranged in the drug delivery box. The switchable automatic injection mechanism is used to make the cleaning liquid in the cleaning liquid injection cavity enter the drug delivery head to flush the drug administration site or make the liquid medicine in the liquid medicine injection cavity enter the drug delivery head and be applied to the periodontal pocket.

[0009] Preferably, the clamping frame includes a connecting plate, the holding rod is fixedly connected to one end of the connecting plate, the other end of the connecting plate is fixedly connected to a fixing rod, the fixing rod and the connecting plate are L-shaped, one end of the connecting plate away from the fixing rod is hinged to one end of a swing rod, the other end of the swing rod and the end of the fixing rod away from the connecting plate are respectively fixedly connected to the dosing head, the two dosing heads are arranged opposite to each other, and a clamping piece is arranged between the swing rod and the connecting plate.

[0010] Preferably, the clamping member includes a cam rotatably connected to the connecting plate, the cam abuts against a side of the swing rod away from the fixed rod, the cam is used to push the swing rod toward the fixed rod, and a pressure rod is fixedly connected to the cam to drive the cam to rotate.

[0011] Preferably, a first piston is slidably connected in the drug liquid injection chamber, and a first push rod is fixedly connected to one end of the first piston away from the drug liquid injection chamber, and the first push rod is arranged corresponding to the switchable automatic injection mechanism.

[0012] Preferably, the cleaning liquid injection chamber is arranged in parallel with the medicine injection chamber, a second piston is slidably connected in the cleaning liquid injection chamber, a second push rod is fixedly connected to one end of the second piston away from the cleaning liquid injection chamber, and the second push rod is arranged corresponding to the switchable automatic injection mechanism.

[0013] Preferably, the switchable automatic injection mechanism includes a screw rod rotatably connected to the medication box, the screw rod is arranged parallel to the drug injection chamber, one end of the screw rod is connected to the motor, the screw rod is located between the first push rod and the second push rod, a connecting rod is threadedly sleeved on the screw rod, a switching connecting piece is arranged in the connecting rod, and the switching connecting piece is used to fix the two ends of the connecting rod to the first push rod or the second push rod respectively.

[0014] Preferably, the switching connecting member includes an insertion rod slidably connected to the connecting rod, the length of the insertion rod is smaller than the length of the connecting rod, and a second shift block is fixedly connected to the insertion rod, the second shift block respectively penetrates the connecting rod and the side wall of the medication box, and the second shift block slides with the insertion rod relative to the connecting rod and the medication box, and a slot is provided on the side of the first push rod and the second push rod away from the first piston and the second piston, and the slot is arranged close to the connecting rod, and the two ends of the insertion rod are respectively arranged corresponding to the two slots.

[0015] Preferably, a placement bin is provided at the top of the medicine administration box. The placement bin is used for placing medicine capsules. A sliding block is slidably connected inside the medicine administration box. One end of the sliding block is fixedly connected to a needle. The needle is used for piercing into the medicine capsule. One end of the needle is connected to one end of a flexible tube. The other end of the flexible tube is connected to the liquid medicine injection cavity through a first electronic valve.

[0016] Preferably, one end of the second electronic valve is also connected to the end of the liquid medicine injection cavity away from the first piston. The other end of the second electronic valve is connected to a connector.

[0017] Preferably, a plurality of injection heads are also fixedly connected to the side of the connecting plate close to the medicine administration head. A three-way joint is fixedly connected to the connecting plate. One end of the three-way joint is connected to one end of a connecting tube. The other end of the connecting tube is detachably connected to a connector. The other two ends of the three-way joint are respectively connected to the medicine administration head and the injection head.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: Overall, through the provided clamping frame, the two medicine administration heads are automatically clamped on the periodontal pocket, avoiding the uneven application of medicine when medical staff hold a syringe for application. At the same time, through the provided switchable automatic injection mechanism, the medicine administration head can both spray cleaning liquid for cleaning and spray liquid medicine for application, improving the use efficiency. Moreover, the switchable automatic injection mechanism can achieve quantitative injection of the cleaning liquid or the liquid medicine, effectively avoiding the problem of large dosage errors in manual medicine application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the medicine application component of the present invention;

[0021] Figure 2 It is a cross-sectional view of the quantitative medicine administration component of the present invention;

[0022] Figure 3 It is a top view of the quantitative medicine administration component of the present invention;

[0023] Among them, 1. connecting plate; 2. swing rod; 3. medicine bag; 4. injection head; 5. three-way joint; 6. connecting pipe; 7. drug delivery head; 8. liquid outlet hole; 9. cam; 10. pressing rod; 11. limiting block; 12. holding rod; 13. fixing rod; 14. drug delivery box; 15. placement bin; 16. liquid medicine injection cavity; 17. first piston; 18. needle; 19. sliding block; 20. hose; 21. first electronic valve; 22. second electronic valve; 23. cleaning liquid injection cavity; 24. second piston; 25. first push rod; 26. second push rod; 27. linkage rod; 28. inserting rod; 29. first dialing block; 30. second dialing block; 31. slot; 32. lead screw; 33. motor; 34. sealing cover; 35. connector; 36. first slot; 37. second slot. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0026] In the prior art, there is a quantitative drug delivery device for treating chronic periodontitis, including an injection cylinder, a piston, and a push rod fixedly connected to the piston. The piston and the push rod are both located inside the injection cylinder and can slide axially along the injection cylinder. The head of the injection cylinder is connected to a gun head connecting pipe, a sealing cover is buckled on the gun head connecting pipe, an injection gun head can be sleeved on the nozzle of the gun head connecting pipe, and scale lines are arranged axially on the outer wall of the injection cylinder.

[0027] For the above-mentioned quantitative drug delivery device for treating chronic periodontitis, a positioning device is externally connected to the injection cylinder;

[0028] The positioning device includes a fastening clip, a first connecting rod, a second connecting rod, a first medicine box, and a second medicine box. The fastening clip has a first clamping arm and a second clamping arm. The fastening clip is sleeved and clamped on the outside of the injection cylinder. One end of the first connecting rod is connected to the head end of the first clamping arm, and the other end is connected to the first medicine box. One end of the second connecting rod is connected to the head end of the second clamping arm, and the other end is connected to the second medicine box. And the gun head connecting pipe is located between the first connecting rod and the second connecting rod. Both the first medicine box and the second medicine box are filled with a filling layer for adjusting temperature, and both the first medicine box and the second medicine box are provided with box covers.

[0029] A first threaded through hole is provided at the head end of the first clamping arm, a first threaded hole is provided at the bottom of the first medicine box, one end of the first connecting rod is screwed into the first threaded through hole and can pass through the first threaded through hole, and the other end of the first connecting rod is screwed into the first threaded hole;

[0030] A second threaded through hole is provided at the head end of the second clamping arm, a second threaded hole is provided at the bottom of the second medicine box, one end of the second connecting rod is screwed into the second threaded through hole and can pass through the second threaded through hole, and the other end of the second connecting rod is screwed into the second threaded hole.

[0031] The filling layer is one of a sponge layer, a glass wool layer, a polystyrene foam layer or an ice pack.

[0032] Buffer sleeves are sleeved on both the first clamping arm and the second clamping arm.

[0033] The buffer sleeve is one of a sponge sleeve, a latex sleeve or a plastic sleeve.

[0034] Suction cups are installed on the side walls of the boxes of the first medicine box and the second medicine box.

[0035] The beneficial effects of this solution are as follows:

[0036] 1. By setting a scale line and a sealing cap, a drug delivery device filled with a temperature-sensitive gel is provided. When not in use, the syringe pre-filled with the liquid medicine is sealed with a sealing cap, and the slender injection gun head is not connected to the syringe. When in use, open the sealing cap and connect the injection gun head to administer the medicine quantitatively to prevent contamination. After the injection is completed, remove the injection gun head. There is basically no gel attached to the injection gun head, and the gel can be quickly formed at the gum drug administration site to achieve the purpose of slow-release drug, and the positioning is accurate. By selecting a micro-scale line and a slender injection syringe and injection gun head, the injection accuracy can reach 0.1 ml. It is especially suitable for the injection of temperature-sensitive iodine gel drugs.

[0037] 2. A positioning device and the like are added. The positioning device is used to position and support the injection gun head, so that only one hand can complete the operation during the injection process, and fixed-point positioning injection can be achieved, liberating both hands and saving effort.

[0038] 3. The first medicine box, the second medicine box and the filling layer inside them can change the gum temperature and can promote the formation of a gel of the temperature-sensitive gel drug for treating chronic periodontitis. The positioning device can prevent drug loss, promote the penetration of the drug into the deep part of the gum to form a gel, increase the contact time between the drug and the diseased part, and better exert the therapeutic effect of the drug.

[0039] Referring to Figures 1 - 3 , the present invention provides a quantitative drug delivery device for treating chronic periodontitis, including:

[0040] The upper medicine component includes a clamping frame. One end of the clamping frame is provided with a grip rod 12, and the other end of the clamping frame is provided with two groups of medicine delivery heads 7. The clamping frame is used to clamp the two medicine delivery heads 7 to the periodontal pocket;

[0041] The quantitative medicine delivery component includes a medicine delivery box 14. A liquid medicine injection cavity 16 and a cleaning liquid injection cavity 23 are arranged in the medicine delivery box 14. The liquid medicine injection cavity 16 and the cleaning liquid injection cavity 23 are respectively communicated with a connector 35. The medicine delivery head 7 is communicated with one connector 35. A switchable automatic injection mechanism is arranged in the medicine delivery box 14. The switchable automatic injection mechanism is used to make the cleaning liquid in the cleaning liquid injection cavity 23 enter the medicine delivery head 7 to wash the medicine delivery site or make the liquid medicine in the liquid medicine injection cavity 16 enter the medicine delivery head 7 and smear it on the periodontal pocket.

[0042] The main function of the clamping frame is to make the two groups of medicine delivery heads 7 fit the inner and outer periodontal pockets respectively. When the medical staff holds the grip rod 12 and moves the clamping frame, the clamping frame can automatically move the medicine delivery heads 7 along the periodontal pocket to smear the liquid medicine evenly; the main function of the grip rod 12 is to facilitate the medical staff to hold the clamping frame and reduce the difficulty of moving the clamping frame in the oral cavity; the main function of the liquid medicine injection cavity 16 is to store the liquid medicine; the main function of the cleaning liquid injection cavity 23 is to store the cleaning liquid; the main function of the switchable automatic injection mechanism is to inject an appropriate amount of cleaning liquid in the cleaning liquid injection cavity 23 into the two medicine delivery heads 7 when the smear site needs to be cleaned, and smear the cleaning liquid on the periodontal pocket through the medicine delivery heads 7. When the liquid medicine needs to be smeared on the periodontal pocket, an appropriate amount of liquid medicine in the liquid medicine injection cavity 16 is injected into the two medicine delivery heads 7, and the liquid medicine is smeared on the periodontal pocket through the medicine delivery heads 7. Overall, through the clamping frame provided in the present invention, the two medicine delivery heads are automatically clamped on the periodontal pocket, avoiding the uneven drug smearing situation when the medical staff holds a syringe to smear. At the same time, through the provided switchable automatic injection mechanism, the medicine delivery head can spray both the cleaning liquid for cleaning and the liquid medicine for smearing, improving the use efficiency, and the switchable automatic injection mechanism can realize the quantitative injection of the cleaning liquid or the liquid medicine, effectively avoiding the problem of large dosage errors in manual medicine application.

[0043] In a further optimized scheme, a plurality of liquid outlet holes 8 are respectively arranged on the opposite side walls of the two groups of medicine delivery heads 7. The liquid medicine or the cleaning liquid flows out of the medicine delivery head 7 through the plurality of liquid outlet holes 8.

[0044] In a further optimized scheme, the medicine delivery head 7 is made of silica gel material and can be deformed to a certain extent to adapt to the shape of the periodontal pocket.

[0045] In a further optimized scheme, an operation panel is arranged on the top of the medicine delivery box 14. The operation panel is electrically connected to the switchable automatic injection mechanism.

[0046] For a further optimized solution, the clamping bracket includes a connecting plate 1. A grip rod 12 is fixedly connected to one end of the connecting plate 1. The other end of the connecting plate 1 is fixedly connected to a fixed rod 13. The fixed rod 13 and the connecting plate 1 are in an L shape. One end of a swing rod 2 is hinged to the end of the connecting plate 1 away from the fixed rod 13. The other ends of the swing rod 2 and the fixed rod 13 away from the connecting plate 1 are respectively fixedly connected to a dosing head 7. The two dosing heads 7 are arranged oppositely. A clamping member is arranged between the swing rod 2 and the connecting plate 1.

[0047] As Figure 1 shown, the swing rod 2 can swing at the bottom of the connecting plate 1, so as to change the distance between the two dosing heads 7. Before placing the dosing head 7 into the periodontal pocket, the swing rod 2 can swing freely, which is convenient for medical staff to clamp the two dosing heads 7 on the periodontal pockets on both the inner and outer sides of the gingiva.

[0048] For a further optimized solution, the clamping member includes a cam 9 rotatably connected to the connecting plate 1. The cam 9 abuts against the side of the swing rod 2 away from the fixed rod 13. The cam 9 is used to push the swing rod 2 towards the fixed rod 13. A pressing rod 10 is fixedly connected to the cam 9 to drive the rotation of the cam 9.

[0049] For a further optimized solution, a limiting block 11 is fixedly connected to the side wall of the swing rod 2. The limiting block 11 abuts against the pressing rod 10.

[0050] As Figure 1 shown, before the swing rod 2 is locked, the pressing rod 10 is in a raised state relative to the grip rod 12. There is a gap between the protruding end of the cam 9 and the swing rod 2, and the swing rod 2 is in a swingable state. After the two dosing heads 7 are respectively placed at the periodontal pocket part, press down the pressing rod 10 until the pressing rod 10 fits with the limiting block 11. At this time, the protruding end of the cam 9 is perpendicular to the swing rod 2. The swing rod 2 is fixed in position under the squeezing action of the cam 9 and the dosing head 7 in two directions. At this time, both dosing heads 7 are in contact with the periodontal pocket.

[0051] For a further optimized solution, a first piston 17 is slidably connected in a liquid medicine injection cavity 16. One end of the first piston 17 away from the liquid medicine injection cavity 16 is fixedly connected to a first push rod 25. The first push rod 25 is correspondingly arranged with a switchable automatic injection mechanism.

[0052] For a further optimized solution, a cleaning liquid injection cavity 23 is arranged in parallel with the liquid medicine injection cavity 16. A second piston 24 is slidably connected in the cleaning liquid injection cavity 23. One end of the second piston 24 away from the cleaning liquid injection cavity 23 is fixedly connected to a second push rod 26. The second push rod 26 is correspondingly arranged with a switchable automatic injection mechanism.

[0053] For a further optimized solution, the switchable automatic injection mechanism includes a lead screw 32 rotatably connected to the medicine administration box 14. The lead screw 32 is arranged parallel to the liquid medicine injection cavity 16. One end of the lead screw 32 is drivingly connected to a motor 33. The lead screw 32 is located between the first push rod 25 and the second push rod 26. A linkage rod 27 is sleeved on the lead screw 32 in a threaded manner. A switching connector is arranged inside the linkage rod 27. The switching connector is used to fixedly connect the two ends of the linkage rod 27 to the first push rod 25 or the second push rod 26 respectively.

[0054] For a further optimized solution, the switching connector includes a plug rod 28 slidably connected inside the linkage rod 27. The length of the plug rod 28 is less than that of the linkage rod 27. A second dial block 30 is fixedly connected to the plug rod 28. The second dial block 30 respectively penetrates through the side wall of the linkage rod 27 and the medicine administration box 14, and the second dial block 30 slides relative to the linkage rod 27 and the medicine administration box 14 along with the plug rod 28. Slots 31 are formed on the sides of the first push rod 25 and the second push rod 26 away from the first piston 17 and the second piston 24. The slots 31 are arranged close to the linkage rod 27. The two ends of the plug rod 28 are respectively arranged corresponding to the two slots 31.

[0055] For a further optimized solution, a through groove is formed at the bottom of the linkage rod 27. The second dial block 30 can move in the through groove. A first slot 36 is formed at the top of the medicine administration box 14 along the direction of the first piston 17. The second dial block 30 can move relative to each other in the first slot 36.

[0056] As Figure 2 and Figure 3 shown, when it is necessary to inject liquid medicine, the medical staff pushes the second dial block 30 towards the first push rod 25, so that one end of the plug rod 28 is inserted into the slot 31 of the first push rod 25, and the linkage rod 27 is fixedly connected to the first push rod 25 through the plug rod 28. Then, the medical staff controls the motor 33 to start and drive the lead screw 32 to rotate through the operation panel. The lead screw 32 drives the linkage rod 27 to move towards the liquid medicine injection cavity 16 through threaded transmission, thereby driving the first piston 17 to move and ejecting the liquid medicine.

[0057] Meanwhile, when it is necessary to inject cleaning liquid, the medical staff pushes the second dial block 30 towards the second push rod 26, so that the other end of the plug rod 28 is inserted into the slot 31 of the second push rod 26, and then operates the control panel to drive the linkage rod 27 to move towards the cleaning liquid injection cavity 23 to eject the cleaning liquid.

[0058] For a further optimized solution, a placement bin 15 is formed at the top of the medicine administration box 14. The placement bin 15 is used to place the medicine capsule 3. A sliding block 19 is slidably connected inside the medicine administration box 14. One end of the sliding block 19 is fixedly connected to a needle 18. The needle 18 is used to pierce into the medicine capsule 3. One end of a hose 20 is connected to the needle 18. The other end of the hose 20 is connected to the liquid medicine injection cavity 16 through a first electronic valve 21.

[0059] In a further optimized solution, one end of the liquid medicine injection cavity 16 away from the first piston 17 is also connected to one end of a second electronic valve 22, and the other end of the second electronic valve 22 is connected to a connector 35.

[0060] In a further optimized solution, as Figure 1 shown, a chute is provided at the top of the medicine administration box 14, and a sliding block 19 is slidably connected in the chute, and the sliding block 19 extends upward from the top of the medicine administration box 14, facilitating the operation of medical staff.

[0061] As Figure 2 shown, by using the medicine bag 3 and loading the liquid medicine in the medicine bag 3, it is convenient to carry the liquid medicine. During use, medical staff first insert the insertion rod 28 into the slot 31 of the first push rod 25, and make the first piston 17 close to the medicine bag 3 through the motor 33. Then, close the second electronic valve 22 and open the first electronic valve 21 through the control panel. After that, push the sliding block 19 to drive the needle 18 to pierce the medicine bag 3 by the sliding block 19. Then, control the motor 33 to reverse and draw the liquid medicine into the liquid medicine injection cavity 16.

[0062] Before administering the medicine, it is necessary to close the first electronic valve 21 and open the second electronic valve 22 through the control panel so that the liquid medicine can flow in the direction of the connector 35 through the second electronic valve 22.

[0063] In a further optimized solution, a cover 34 is hinged to the top of the medicine administration box 14, and the cover 34 is adapted to the placement bin 15.

[0064] In a further optimized solution, two groups of second slots 37 are also provided at the top of the medicine administration box 14. First sliders 29 are respectively fixedly connected to the first push rod 25 and the second push rod 26, and the two groups of first sliders 29 slidably penetrate through the two groups of second slots 37.

[0065] As Figure 3 shown, by providing the first slider 29, medical staff can quickly pull the first push rod 25 or the second push rod 26 to make the first piston 17 or the second piston 24 in a proper position, and only drive through the motor 33 for precise injection during the injection process, which can improve the use efficiency while ensuring the injection accuracy.

[0066] In a further optimized solution, a plurality of injection heads 4 are also fixedly connected to one side of the connecting plate 1 close to the medicine administration head 7. A three-way joint 5 is fixedly connected to the connecting plate 1. One end of the three-way joint 5 is connected to one end of a connecting pipe 6, the other end of the connecting pipe 6 is detachably connected to a connector 35, and the other two ends of the three-way joint 5 are respectively connected to the medicine administration head 7 and the injection head 4.

[0067] As Figure 1As shown, the main function of the three-way joint 5 is to direct the liquid in the connecting pipe 6 to several injection heads 4 and two drug delivery heads 7.

[0068] The working process of this embodiment is as follows: Before use, medical staff can place the medicine capsule 3 into the placement bin 15, and through the corresponding first shifting block 29, make the first piston 17 close to the placement bin 15. Then, use the sliding block 19 to pierce the medicine capsule 3 with the needle 18, move the second shifting block 30, and then start the motor 33 to move the first piston 17 backward to draw the liquid medicine into the liquid medicine injection chamber 16. Then, use the motor 33 to move the linkage rod 27 to the left end and move the second piston 24 to the left end. Then, reverse the rotation of the motor 33 and store the cleaning liquid into the cleaning liquid injection chamber 23 through the lower connector 35.

[0069] During the drug delivery process, medical staff first connect the connecting pipe 6 to the lower connector 35, then squeeze the inner and outer periodontal pockets with the drug delivery head 7, start the motor 33, move the second piston 24 to the left, and make the cleaning liquid spray out from the liquid outlet hole 8 and the injection head 4 for cleaning. Then reset the linkage rod 27 to connect the linkage rod 27 with the first push rod 25. At the same time, connect the connecting pipe 6 to the upper connector 35, control the rotation of the motor 33, move the first piston 17 to the left, and make the liquid medicine spray out from the liquid outlet hole 8 and the injection head 4 for drug application operation.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, 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, so it cannot be understood as a limitation to the present invention.

[0071] The above-described embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A quantitative drug delivery device for treating chronic periodontitis, characterized in that , comprising: An upper medicine component, including a clamping frame, one end of the clamping frame is provided with a grip rod (12), the other end of the clamping frame is provided with two medicine delivery heads (7), and the clamping frame is used to make the two medicine delivery heads (7) clamp the periodontal pocket; A quantitative medicine delivery component, including a medicine delivery box (14), a liquid medicine injection cavity (16) and a cleaning liquid injection cavity (23) are arranged in the medicine delivery box (14), the liquid medicine injection cavity (16) and the cleaning liquid injection cavity (23) are respectively communicated with a connecting head (35), the medicine delivery head (7) is communicated with one of the connecting heads (35), and a switchable automatic injection mechanism is arranged in the medicine delivery box (14), and the switchable automatic injection mechanism is used to make the cleaning liquid in the cleaning liquid injection cavity (23) enter the medicine delivery head (7) to flush the medicine delivery site or make the liquid medicine in the liquid medicine injection cavity (16) enter the medicine delivery head (7) and smear it on the periodontal pocket.

2. The quantitative drug delivery device for treating chronic periodontitis according to claim 1, wherein: The clamping frame includes a connecting plate (1), the grip rod (12) is fixedly connected to one end of the connecting plate (1), the other end of the connecting plate (1) is fixedly connected with a fixed rod (13), the fixed rod (13) and the connecting plate (1) are in an L shape, one end of a swing rod (2) is hinged to the end of the connecting plate (1) away from the fixed rod (13), and the other end of the swing rod (2) and the end of the fixed rod (13) away from the connecting plate (1) are respectively fixedly connected with the medicine delivery head (7), the two medicine delivery heads (7) are arranged oppositely, and a clamping member is arranged between the swing rod (2) and the connecting plate (1).

3. The quantitative drug delivery device for treating chronic periodontitis according to claim 2, wherein: The clamping member includes a cam (9) rotatably connected to the connecting plate (1), the cam (9) abuts against the side of the swing rod (2) away from the fixed rod (13), the cam (9) is used to push the swing rod (2) towards the fixed rod (13), and a pressing rod (10) for driving the cam (9) to rotate is fixedly connected to the cam (9).

4. The quantitative drug delivery device for treating chronic periodontitis according to claim 1, wherein: A first piston (17) is slidably connected in the liquid medicine injection cavity (16), one end of the first piston (17) away from the liquid medicine injection cavity (16) is fixedly connected with a first push rod (25), and the first push rod (25) is arranged corresponding to the switchable automatic injection mechanism.

5. The quantitative drug delivery device for treating chronic periodontitis according to claim 4, wherein: The cleaning liquid injection cavity (23) is arranged in parallel with the liquid medicine injection cavity (16), a second piston (24) is slidably connected in the cleaning liquid injection cavity (23), one end of the second piston (24) away from the cleaning liquid injection cavity (23) is fixedly connected with a second push rod (26), and the second push rod (26) is arranged corresponding to the switchable automatic injection mechanism.

6. The quantitative drug delivery device for treating chronic periodontitis according to claim 5, characterized in that: The switchable automatic injection mechanism includes a lead screw (32) rotatably connected in the medicine administration box (14). The lead screw (32) is arranged parallel to the liquid medicine injection cavity (16). One end of the lead screw (32) is drivingly connected to a motor (33). The lead screw (32) is located between the first push rod (25) and the second push rod (26). A linkage rod (27) is threadedly sleeved on the lead screw (32). A switching connecting piece is arranged in the linkage rod (27). The switching connecting piece is used to fixedly connect the two ends of the linkage rod (27) to the first push rod (25) or the second push rod (26) respectively.

7. The quantitative drug delivery device for treating chronic periodontitis according to claim 6, wherein: The switching connecting piece includes a plug rod (28) slidably connected in the linkage rod (27). The length of the plug rod (28) is less than the length of the linkage rod (27). A second dial block (30) is fixedly connected to the plug rod (28). The second dial block (30) penetrates through the side walls of the linkage rod (27) and the medicine administration box (14) respectively. And the second dial block (30) slides relative to the linkage rod (27) and the medicine administration box (14) along with the plug rod (28). Slots (31) are formed on the sides of the first push rod (25) and the second push rod (26) away from the first piston (17) and the second piston (24). The slots (31) are arranged close to the linkage rod (27). The two ends of the plug rod (28) are respectively arranged corresponding to the two slots (31).

8. The quantitative drug delivery device for treating chronic periodontitis according to claim 4, characterized in that: A placement bin (15) is formed at the top of the medicine administration box (14). The placement bin (15) is used to place the medicine capsule (3). A sliding block (19) is slidably connected in the medicine administration box (14). One end of the sliding block (19) is fixedly connected to a needle head (18). The needle head (18) is used to pierce into the medicine capsule (3). One end of a hose (20) is connected to the needle head (18). The other end of the hose (20) is connected to the liquid medicine injection cavity (16) through a first electronic valve (21).

9. The quantitative drug delivery device for treating chronic periodontitis according to claim 8, wherein: One end of a second electronic valve (22) is also connected to the end of the liquid medicine injection cavity (16) away from the first piston (17). The other end of the second electronic valve (22) is connected to a connecting head (35).

10. The quantitative drug delivery device for treating chronic periodontitis according to claim 2, characterized in that: A plurality of injection heads (4) are also fixedly connected to the side of the connecting plate (1) close to the medicine administration head (7). A three-way joint (5) is fixedly connected to the connecting plate (1). One end of a connecting pipe (6) is connected to one end of the three-way joint (5). The other end of the connecting pipe (6) is detachably connected to a connecting head (35). The other two ends of the three-way joint (5) are respectively connected to the medicine administration head (7) and the injection heads (4).

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