Local administration device for oral medicine treatment

Abstract

The invention relates to the technical field of oral medicine, in particular to a local drug delivery device for oral medicine treatment, which comprises a drug delivery mechanism I and an adjusting assembly, the drug delivery mechanism I comprises a cylinder I, a handle and a cylinder II; the handle is connected to the cylinder I, the cylinder II is slidably connected to the interior of the cylinder I, the cylinder III is connected to the left end of the cylinder II, an upper cavity and a lower cavity are formed in the interior of the cylinder III, and sliding grooves are symmetrically formed in the right portion of the cylinder II. By arranging the mounting frame and the rotating shaft, the rotating shaft rotates on the mounting frame when the barrel I is moved up and down, so that the barrel III can move up and down in the oral cavity of a patient, when the barrel III moves to the position where a focus is roughly located, a handle is held by a hand and moves left and right, and the rotating shaft drives the barrel I, the barrel II and the barrel III to rotate between the mounting plates III; therefore, the device not only can adjust the position of the cylinder III up and down, but also can adjust the position of the cylinder III left and right, so that more comprehensive oral treatment is realized without being limited by angles.

Description

Technical Field

[0001] The present invention relates to the technical field of oral medicine, and more particularly, to a local drug delivery device for oral medicine treatment. Background Art

[0002] Oral medicine treatment mainly involves the diagnosis, prevention, and treatment of diseases of the soft and hard tissues inside the oral cavity. It covers a series of oral health problems, including endodontic diseases (problems involving the dental pulp or nerve), periodontal diseases (diseases affecting the gums and supporting tooth structures), and oral mucosal diseases, etc.; The local drug delivery device used in oral medicine treatment is a device specifically designed to directly deliver drugs to specific lesion sites inside the oral cavity. This device can improve the effectiveness of the drug and reduce side effects because the drug can reach the site of action without passing through the systemic circulation.

[0003] According to a local drug delivery device for oral medicine treatment with the patent authorization announcement number CN114795559B and the announcement date of March 26, 2024, which can well adjust the degree of opening of the patient's mouth, enabling medical staff to smoothly treat the patient's oral cavity. The local drug delivery device for oral medicine treatment includes a drug delivery cylinder, a blocking piece, a piston rod, a first spring, etc. A blocking piece is connected to the inner wall of the drug delivery cylinder, and a piston rod slidably passes through the middle of the blocking piece. A first spring is connected between the piston rod and the blocking piece. Medical staff can easily adjust the distance between the two rubber blocks by holding two first clamping rods, thereby being able to open the patient's mouth wide, enabling medical staff to smoothly treat the patient's oral cavity. Through the compression of the third spring, the drug delivery cylinder is placed inside the patient's oral cavity, thereby being able to automatically treat the inside of the patient's oral cavity. This device can easily adjust the distance between the two rubber blocks through two first clamping rods, and this device can move the drug delivery cylinder left and right, enabling the drug delivery cylinder to be adjusted left and right. While effectively expanding the patient's mouth, it can also adjust the position of the drug delivery cylinder to adapt to the position of the patient's lesion. However, this device can only achieve left and right adjustment, and there is an angular limitation for the drug delivery cylinder, which cannot be flexibly adjusted, resulting in a low treatment efficiency of the device for the patient's oral cavity.

[0004] Therefore, we urgently need a local drug delivery device for oral medicine treatment that can be adjusted in multiple directions. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a local drug delivery device for oral medicine treatment.

[0006] The technical solution is as follows: A local drug delivery device for oral medicine treatment, comprising a drug delivery mechanism I and an adjustment component. The drug delivery mechanism I includes: a cylinder I, a handle, a cylinder II, a liquid medicine tank, a liquid medicine pump, a nozzle, a cylinder III and a mounting plate I. A handle is connected to the cylinder I. The cylinder II is slidably connected inside the cylinder I. The left end of the cylinder II is connected to the cylinder III. An upper cavity and a lower cavity are provided inside the cylinder III. Slide grooves are symmetrically opened on the right part of the cylinder II. The liquid medicine tank and the liquid medicine pump are installed inside the cylinder II. The liquid inlet of the liquid medicine pump is connected to the liquid outlet of the liquid medicine tank. A liquid delivery pipe is connected to the liquid outlet of the liquid medicine pump. The nozzle is arranged inside the lower cavity of the cylinder III and penetrates through the cylinder III. The nozzle is communicated with the liquid outlet end of the liquid delivery pipe. The right end of the cylinder II is rotatably connected to the mounting plate I. The adjustment component includes a mounting frame, a rotating shaft, a mounting plate II, a mounting plate III and a rubber block. The rotating shafts are symmetrically and rotatably connected to the mounting frame. The rotating shafts are all connected to the cylinder I. The upper and lower sides of the mounting frame are detachably connected with the mounting plate II. The mounting plate III is provided on the mounting plate II. The rubber blocks are slidably connected to the mounting plate III.

[0007] As a further preferred solution, the adjustment component further includes a threaded rod, a guide rod and a turning handle. The threaded rods are connected to the right parts of the mounting plate II. The turning handle is threadedly connected between the threaded rods. The guide rods are connected to the left parts of the mounting plate II. The turning handle is threadedly connected between the two threaded rods.

[0008] As a further preferred solution, the mounting plate III is rotatably connected to the mounting plate II.

[0009] As a further preferred solution, it further includes a drug delivery mechanism II. The drug delivery mechanism II is provided on the cylinder III. The drug delivery mechanism II includes a pull rod, a discharge frame, a cover plate and an elastic member. The pull rod is slidably connected inside the cylinder II. The discharge frame is connected to the cylinder III. The discharge frame is communicated with the upper cavity of the cylinder III. The cover plate is slidably connected to the discharge frame. The cover plate is connected to the pull rod. The elastic member is connected between the cover plate and the discharge frame.

[0010] As a further preferred solution, it further includes a displacement mechanism. The displacement mechanism is provided on the handle. The displacement mechanism includes a lead screw and a connecting block I. The lead screw is rotatably connected to the handle. The connecting block I is threadedly connected to the lead screw. The connecting block I is connected to the mounting plate I.

[0011] As a further preferred solution, it further includes a mounting plate Ⅳ, a cylinder and a rotating mechanism. A mounting plate Ⅳ is connected to the handle. A cylinder is mounted on the mounting plate Ⅳ. A rotating mechanism is provided on the cylinder Ⅱ. The rotating mechanism includes a gear, a slider, a rack, a connecting block Ⅱ and a sliding frame. The gear is sleeved on the outer wall of the cylinder Ⅱ. Symmetrically connected to the inner ring of the gear are sliders which fit into the sliding grooves. The gear is slidably connected to the cylinder Ⅱ through the sliders. Symmetrically connected to the handle are connecting blocks Ⅱ. A sliding frame is slidably connected to the connecting blocks Ⅱ together. The gear is located in the middle of the sliding frame. Connected to one side of the sliding frame close to the gear is a rack which meshes with the gear. The lower part of the sliding frame is connected to the telescopic end of the cylinder.

[0012] As a further preferred solution, it further includes a limiting plate. A limiting plate is connected to the right side of the handle. The gear is located between the handle and the limiting plate.

[0013] As a further preferred solution, it further includes a lighting lamp. A lighting lamp is connected to the periphery of the left end of the cylinder Ⅰ.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] By providing a mounting frame and a rotating shaft in the present invention, when the cylinder Ⅰ is moved up and down, the rotating shaft will rotate on the mounting frame, so that the cylinder Ⅲ can move up and down in the patient's oral cavity. When it moves to the approximate position of the lesion, then hold the handle and move it left and right. The rotating shaft will drive the cylinder Ⅰ, the cylinder Ⅱ and the cylinder Ⅲ to rotate between the mounting plates Ⅲ. This enables the device to not only adjust the position of the cylinder Ⅲ up and down, but also adjust its position left and right, achieving a more comprehensive oral treatment without being restricted by the angle. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the cylinder Ⅰ, the cylinder Ⅱ and the cylinder Ⅲ of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the drug delivery mechanism Ⅰ, the handle and the adjustment assembly of the present invention.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the adjustment assembly of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the cylinder Ⅰ, the cylinder Ⅱ and the cylinder Ⅲ of the present invention.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the drug delivery mechanism Ⅱ of the present invention.

[0022] Figure 7This is a three-dimensional structural schematic diagram of the handle, cylinder II, lead screw and connecting block I of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the displacement mechanism and rotation mechanism of the present invention.

[0024] Names of the reference numerals in the figure: 1 - drug delivery mechanism I, 101 - cylinder I, 102 - handle, 103 - cylinder II, 100 - chute, 104 - liquid medicine tank, 105 - liquid medicine pump, 106 - nozzle, 107 - cylinder III, 108 - mounting plate I, 2 - adjustment assembly, 21 - mounting bracket, 22 - rotating shaft, 23 - mounting plate II, 231 - threaded rod, 232 - guide rod, 24 - turning handle, 25 - mounting plate III, 251 - rubber block, 3 - drug delivery mechanism II, 31 - pull rod, 32 - discharge frame, 33 - cover plate, 34 - elastic member, 4 - displacement mechanism, 41 - lead screw, 42 - connecting block I, 43 - mounting plate IV, 44 - air cylinder, 5 - rotation mechanism, 51 - gear, 511 - slider, 52 - connecting block II, 53 - sliding bracket, 531 - rack, 54 - limiting plate, 6 - lighting lamp. Detailed implementation manners

[0025] 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.

[0026] Embodiment: A local drug delivery device for oral medicine treatment, as Figures 1-4As shown in the figure, it includes a drug delivery mechanism Ⅰ1 and an adjustment component 2. The drug delivery mechanism Ⅰ1 includes: a cylinder Ⅰ101, a handle 102, a cylinder Ⅱ103, a liquid medicine tank 104, a liquid medicine pump 105, a nozzle 106, a cylinder Ⅲ107 and a mounting plate Ⅰ108. A handle 102 is connected to the cylinder Ⅰ101. The cylinder Ⅱ103 is slidably connected to the inside of the cylinder Ⅰ101 from left to right. The left end of the cylinder Ⅱ103 is connected to the cylinder Ⅲ107. An upper cavity and a lower cavity are provided inside the cylinder Ⅲ107. Sliding grooves 100 are symmetrically formed in the right part of the cylinder Ⅱ103. A liquid medicine tank 104 and a liquid medicine pump 105 are installed inside the cylinder Ⅱ103. The liquid inlet of the liquid medicine pump 105 is connected to the liquid outlet of the liquid medicine tank 104. An infusion tube is connected to the liquid outlet of the liquid medicine pump 105. The nozzle 106 is inserted into the lower cavity of the cylinder Ⅲ107 and passes through the cylinder Ⅲ107. The nozzle 106 is communicated with the liquid outlet end of the infusion tube. When the liquid medicine pump 105 is started, the liquid medicine pump 105 will draw the liquid medicine out of the liquid medicine tank 104 and transport it into the nozzle 106, and then spray the liquid medicine on the lesion through the nozzle 106. The right end of the cylinder Ⅱ103 is rotatably connected to a mounting plate Ⅰ108. The adjustment component 2 includes a mounting frame 21, a rotating shaft 22, a mounting plate Ⅱ23, a mounting plate Ⅲ25, a rubber block 251, a threaded rod 231, a guide rod 232 and a turning handle 24. Rotating shafts 22 are symmetrically rotatably connected to the mounting frame 21. The rotating shafts 22 are both connected to the cylinder Ⅰ101. The mounting plate Ⅱ23 is slidably connected to the upper and lower sides of the mounting frame 21. A mounting plate Ⅲ25 is provided on the mounting plate Ⅱ23. The rubber block 251 is detachably connected to the mounting plate Ⅲ25. When treating the next patient, a new rubber block 251 can be replaced, thus ensuring the medical hygiene of the device. The threaded rods 231 are connected to the right parts of the mounting plate Ⅱ23. A turning handle 24 is threadedly connected between the threaded rods 231. The guide rods 232 are connected to the left parts of the mounting plate Ⅱ23. A turning handle 24 is threadedly connected between the two threaded rods 231. By turning the turning handle 24, the threaded rod 231 rotates inside the turning handle 24 and drives the mounting plate Ⅱ23 and the components mounted thereon to move upward and downward respectively, so as to expand the range of the patient's mouth opening and facilitate oral treatment.

[0027] As Figure 5 and Figure 6As shown in the figure, it further includes a drug delivery mechanism II 3. The drug delivery mechanism II 3 is provided on the cylinder III 107. The drug delivery mechanism II 3 includes a pull rod 31, a discharge frame 32, a cover plate 33 and an elastic member 34. The pull rod 31 is slidably connected to the inside of the cylinder II 103 in the left-right direction. The discharge frame 32 is connected to the cylinder III 107. The discharge frame 32 communicates with the upper cavity of the cylinder III 107. The cover plate 33 is slidably connected to the discharge frame 32. The cover plate 33 is slidably connected to the pull rod 31 in the left-right direction. An elastic member 34 is connected between the cover plate 33 and the discharge frame 32 through a spring seat. If it is necessary to coat the medicinal powder, rotate the cylinder III 107 to align the discharge frame 32 with the lesion, and then pull the pull rod 31 backward. The pull rod 31 drives the cover plate 33 to move backward, and the elastic member 34 is stretched. At this time, the discharge port on the discharge frame 32 originally covered by the cover plate 33 will be exposed, and the medicinal powder in the upper cavity of the cylinder III 107 will fall onto the lesion.

[0028] As Figure 7 shown in the figure, it further includes a displacement mechanism 4. The displacement mechanism 4 is provided on the handle 102. The displacement mechanism 4 includes a lead screw 41 and a connecting block I 42. The lead screw 41 is rotatably connected to the handle 102. The connecting block I 42 is threadedly connected to the lead screw 41. The connecting block I 42 is connected to the mounting plate I 108. When the lead screw 41 is rotated, the connecting block I 42 will move back and forth on the lead screw 41, thereby driving the mounting plate I 108 to move. The mounting plate I 108 will drive the cylinder II 103 and the components mounted on the cylinder II 103 to move together.

[0029] As Figure 3 、 Figure 7 and Figure 8As shown in the figure, it further includes mounting plate Ⅳ 43, cylinder 44, rotating mechanism 5, limiting plate 54 and lighting lamp 6. Mounting plate Ⅳ 43 is connected to the handle 102. Cylinder 44 is mounted on mounting plate Ⅳ 43 by bolts. The rotating mechanism 5 is provided on the cylinder body Ⅱ 103. The rotating mechanism 5 includes gear 51, slider 511, connecting block Ⅱ 52 and sliding frame 53. Gear 51 is sleeved on the outer wall of cylinder body Ⅱ 103. Symmetrically connected to the inner ring of gear 51 are sliders 511. The sliders 511 fit with the chute 100. Gear 51 is connected to cylinder body Ⅱ 103 in a left-right sliding manner through the sliders 511. Symmetrically connected to the handle 102 are connecting blocks Ⅱ 52. A sliding frame 53 is connected to the connecting blocks Ⅱ 52 in a vertically sliding manner. Gear 51 is located in the middle of the sliding frame 53. Connected to one side of the sliding frame 53 close to gear 51 is a rack 531. The rack 531 meshes with gear 51. The lower part of the sliding frame 53 is connected to the telescopic end of cylinder 44; A limiting plate 54 is connected to the right side of the handle 102. Gear 51 is located between the handle 102 and the limiting plate 54. When the cylinder 44 is driven, the telescopic end of the cylinder 44 will drive the sliding frame 53 to move upward along the connecting block Ⅱ 52. As the sliding frame 53 moves upward, the rack 531 on the sliding frame 53 will drive the gear 51 to rotate. When the gear 51 rotates, the slider 511 located in the chute 100 will drive the cylinder body Ⅱ 103 to rotate together. At this time, the cylinder body Ⅱ 103 will rotate within the mounting plate Ⅰ 108; A lighting lamp 6 is connected to the peripheral edge of the left end of the cylinder body Ⅰ, and the lighting lamp 6 is turned on so that medical staff can clearly see the location of the lesion in the patient's oral cavity.

[0030] When using this device, first load the liquid medicine into the liquid medicine tank 104, then add the medicine powder into the upper cavity of the cylinder III 107. Next, ask the patient to open their mouth. The medical staff hold the handle 102 and put the cylinder II 103 and the cylinder III 107 into the patient's mouth, and let the patient bite the rubber blocks 251 on the upper and lower parts of the mounting bracket 21. When treating the next patient, a new rubber block 251 can be replaced to ensure the medical hygiene of this device. Then rotate the turning handle 24, so that the threaded rod 231 rotates inside the turning handle 24, and drives the mounting plate II 23 and the components mounted on it to move upward and downward respectively, so as to expand the range of the patient's mouth opening and facilitate oral treatment. During this process, it is necessary to ask the patient whether they are comfortable, taking the patient's comfort as the main consideration. When the patient's mouth opens to a sufficient size, stop rotating the turning handle 24 and turn on the lighting lamp 6 so that the medical staff can clearly see the location of the lesion in the patient's mouth. At this time, move the cylinder I 101 up and down, and the rotating shaft 22 will rotate on the mounting bracket 21, so that the cylinder I 101 can drive the cylinder II 103 and the cylinder III 107 to move up and down in the patient's mouth. When moving to the approximate location of the lesion, then hold the handle 102 and move it left and right. Since the rubber block 251 is fixed by the patient's teeth, the mounting plate III 25 cannot rotate, and the rotating shaft 22 will drive the cylinder I 101, the cylinder II 103 and the cylinder III 107 to rotate between the mounting plates III 25. This enables this device to not only adjust the position of the cylinder III 107 up and down, but also adjust its position left and right, achieving a more comprehensive oral treatment without being restricted by the angle;After adjusting the cylinder III 107 to the approximate position of the lesion by moving it up and down or left and right, then according to the specific position of the lesion, rotate the lead screw 41. When the lead screw 41 rotates, the connecting block I 42 will move back and forth on the lead screw 41, thereby driving the mounting plate I 108 to move. The mounting plate I 108 will drive the cylinder II 103 and the components mounted on the cylinder II 103 to move together, so as to adjust the cylinder III 107 back and forth according to the lesion position, so as to be closer to the lesion. When the mounting plate I 108 moves, the slider 511 on the gear 51 will move in the chute 100, driving the cylinder 44. The telescopic end of the cylinder 44 will drive the sliding frame 53 to move up along the connecting block II 52. As the sliding frame 53 moves up, the rack 531 on the sliding frame 53 will drive the gear 51 to rotate. When the gear 51 rotates, the slider 511 located in the chute 100 will drive the cylinder II 103 to rotate together. At this time, the cylinder II 103 will rotate within the mounting plate I 108, so that the nozzle 106 or the discharge frame 32 on the cylinder III 107 is aligned with the lesion. After aligning with the lesion, if it is necessary to spray the liquid medicine, rotate the cylinder III 107 to align the nozzle 106 with the lesion, start the liquid medicine pump 105. The liquid medicine pump 105 will pump the liquid medicine out of the liquid medicine tank 104 and transport it to the inside of the nozzle 106, and then spray the liquid medicine on the lesion through the nozzle 106. If it is necessary to coat the medicinal powder, rotate the cylinder III 107 to align the discharge frame 32 with the lesion, and then pull the pull rod 31 backward. The pull rod 31 drives the cover plate 33 to move backward, and the elastic member 34 is stretched. At this time, the discharge port on the discharge frame 32 originally covered by the cover plate 33 will be exposed, and the medicinal powder in the cavity of the cylinder III 107 will fall onto the lesion for treatment. During this process, the position of the cylinder III 107 can be adjusted according to the actual situation to ensure that the liquid medicine or the medicinal powder can accurately contact the lesion, and then use the medicine to spray or coat the lesion. This enables the device to not only flexibly adjust the drug delivery component, but also accurately deliver the drug to the lesion, thereby effectively improving the working efficiency of the device. After completing the spraying or coating of the medicine, rotate the turning handle 24 to move the mounting plate II 23 and the components thereon towards the middle, and then take the device out of the patient's mouth. After the treatment is completed, clean and disinfect the device for use in the next treatment.;

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A local drug delivery device for oral medicine treatment, comprising: A drug delivery mechanism I (1) for treating an oral cavity of a patient, the drug delivery mechanism I (1) comprising: Cylinder I (101); An adjustment component (2), disposed on the barrel I (101), for adjusting the position of the device for drug administration; A handle (102) connected to the cylinder body I (101); The cylinder II (103) is slidably connected to the inside of the cylinder I (101), and a slide groove (100) is symmetrically provided on the right part of the cylinder II (103); A liquid medicine tank (104) installed inside the cylinder II (103); A liquid medicine pump (105) is installed inside the barrel II (103), the liquid inlet of the liquid medicine pump (105) is connected to the liquid outlet of the liquid medicine tank (104), and the liquid outlet of the liquid medicine pump (105) is connected to an infusion tube; A cylinder III (107) is connected to the left end of the cylinder II (103), and an upper cavity and a lower cavity are arranged inside the cylinder III (107); A nozzle (106) is disposed in the lower cavity of the barrel III (107) and passes through the barrel III (107), and the nozzle (106) is connected to the liquid outlet end of the infusion tube; A mounting plate I (108) rotatably connected to the right end of the cylinder II (103); Features: The regulating component (2) comprises: A mounting frame (21) is arranged on the cylinder body I (101); A rotating shaft (22) is symmetrically rotatably connected to the mounting frame (21), the rotating shaft (22) is connected to the cylinder body I (101), and the mounting frame (21) is connected to the cylinder body I (101) via the rotating shaft (22); Mounting plates II (23) are slidably connected to the upper and lower sides of the mounting frame (21); Mounting plate III (25), all arranged on the mounting plate II (23); The rubber blocks (251) are detachably connected to the mounting plate III (25).

2. A local drug delivery device for oral medicine treatment according to claim 1, characterized in that: The adjustment component (2) also includes: The threaded rods (231) are connected to the right part of the mounting plate II (23); Guide rods (232) are connected to the left part of the mounting plate II (23); The turning handle (24) is threadedly connected between the threaded rods (231).

3. A local drug delivery device for oral medicine treatment according to claim 2, characterized in that: The mounting plate III (25) is rotatably connected to the mounting plate II (23) I.

4. A local drug delivery device for oral medicine treatment according to claim 3, characterized in that: Also includes: The dosing mechanism II (3) is arranged on the cylinder III (107), and the dosing mechanism II (3) comprises: a pull rod (31) which is slidably inserted into the interior of the cylinder II (103); A discharge frame (32) is connected to the cylinder III (107), and the discharge frame (32) is in communication with the upper cavity inside the cylinder III (107); A cover plate (33) is slidably connected to the discharge frame (32), and the cover plate (33) is connected to the pull rod (31); An elastic member (34) is connected between the cover plate (33) and the discharge frame (32).

5. A local drug delivery device for oral medicine treatment according to claim 4, characterized in that: Also includes: A displacement mechanism (4) is arranged on the handle (102), and the displacement mechanism (4) comprises: A screw rod (41) rotatably connected to the handle (102); A connecting block I (42) is threadedly connected to the screw rod (41), and the connecting block I (42) is connected to the mounting plate I (108).

6. A local drug delivery device for oral medicine treatment according to claim 5, characterized in that: Also includes: A mounting plate IV (43) connected to the handle (102); A cylinder (44) mounted on the mounting plate IV (43); The rotating mechanism (5) is arranged on the cylinder II (103), and the rotating mechanism (5) comprises: A gear (51) is sleeved on the outer wall of the cylinder II (103); A slider (511) is symmetrically connected to the inner ring of the gear (51), the sliders (511) are matched with the slide groove (100), and the gear (51) is slidably connected to the cylinder II (103) through the slider (511); A connecting block II (52), symmetrically connected to the handle (102); A sliding frame (53) is slidably connected to the connecting block II (52), the gear (51) is located in the middle of the sliding frame (53), and the lower part of the sliding frame (53) is connected to the telescopic end of the cylinder (44); A rack (531) is connected to a side of the sliding frame (53) close to the gear (51), and the rack (531) is meshed with the gear (51).

7. A local drug delivery device for oral medicine treatment according to claim 6, characterized in that: Also includes: A limiting plate (54) is connected to the right side of the handle (102), and the gear (51) is located between the handle (102) and the limiting plate (54).

8. A local drug delivery device for oral medicine treatment according to claim 7, characterized in that: Also includes: An illuminating lamp (6) is connected to the periphery of the left end of the cylinder body I (101).

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