Administration device for anorectal surgical nursing

Abstract

The invention relates to the technical field of medical instruments, in particular to an anorectal surgical nursing dosing device which comprises a mounting plate, a circular groove is formed in the mounting plate, a circular tube is fixedly connected to the top of the circular groove, a rotating ring is rotatably matched with the circular tube, a fixing ring is fixedly connected to the top end of the circular tube, and the rotating ring is fixedly matched with the fixing ring; a plurality of sliding grooves are formed in the fixing ring; sliding strips are arranged in the sliding grooves in a sliding fit mode, sliding rods are fixedly connected to the bottoms of the sliding strips, a plurality of arc-shaped grooves allowing the sliding rods to slide are formed in the rotating ring, and the bottoms of the sliding rods extend into the adjacent arc-shaped grooves. The ends, close to the circle center of the fixing ring, of the sliding strips are fixedly connected with anal dilatation plates, and the top ends of the anal dilatation plates fixedly communicate with medicine spraying pipes, liquid suction pipes and purging pipes; a driving assembly for driving the rotating ring to rotate is arranged on the rotating ring; the convenience and comfort of anorectal surgery administration nursing can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a drug delivery device for anorectal surgery care. Background Art

[0002] Drug administration is a common treatment method in anorectal surgical care. However, traditional drug administration methods, such as oral administration, injection, or simple topical application, often cause many inconveniences and discomfort for patients with anorectal diseases. Especially with topical drug administration, due to the special characteristics of the anorectal area, it is difficult for patients to administer the drug accurately on their own. Furthermore, improper operation during the administration process may lead to drug waste or contamination, and even cause discomfort or pain to the patient.

[0003] The anorectal surgical drug delivery device in the prior art mainly inserts a nozzle for spraying medicine into the patient's anus, and then sprays the liquid medicine into the patient's anus through the nozzle; however, since the nozzle size in the prior art is fixed and cannot be adjusted, it is difficult to adapt to patients with different anus sizes. If the nozzle size is small, it may cause the nozzle to fall off, resulting in the inability to spray the medicine normally; if the nozzle size is too large, it will cause serious discomfort to the patient.

[0004] In summary, how to solve the problem that the size of the nozzle cannot be easily adjusted in the existing drug delivery device, which makes drug delivery difficult, has become a difficult problem that needs to be solved in the current field. Therefore, it is necessary to propose a more reasonable drug delivery device for anorectal surgery nursing. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a drug delivery device for anorectal surgical care. Through the design of the anal expansion plate and the rotation of the rotating ring, the device can conveniently adjust the spacing between the anal expansion plates, and then adjust the diameter of the circular ring formed by the anal expansion plates, so as to adapt to different patients and improve the convenience and comfort of the drug delivery process.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a drug delivery device for anorectal surgical care, comprising a mounting plate, a circular groove being opened on the mounting plate, a circular tube being fixedly connected to the top of the circular groove, a rotating ring being rotatably engaged on the circular tube, a fixed ring being fixedly connected to the top of the circular tube, and the rotating ring and the fixed ring being rotatably engaged.

[0007] The fixed ring is provided with several sliding grooves; sliding bars are slidably fitted in the sliding grooves, and a sliding rod is fixedly connected to the bottom of the sliding bar; the rotating ring is provided with several arc grooves for the sliding rods to slide, and the bottoms of the sliding rods extend into the adjacent arc grooves; the end of the sliding bar close to the center of the fixed ring is fixedly connected to an anal expansion plate, and the top of the anal expansion plate is fixedly connected to a spray pipe, a liquid suction pipe and a purge pipe; the rotating ring is provided with a driving assembly for driving the rotating ring to rotate.

[0008] The mounting plate is provided with a medicine delivery component for delivering medicine liquid to the medicine spraying pipe, a gas delivery component for delivering gas to the purge pipe, and a suction component for sucking waste liquid through the suction pipe.

[0009] The technical principles of the above scheme are as follows:

[0010] In the initial state, the anal expansion plates are close to each other, and the diameter of the circular ring formed by the anal expansion plates is the smallest; the anal expansion plates, spray tube, purge tube and suction tube are inserted into the patient's anus; the driving assembly drives the rotating ring to rotate, and when the rotating ring rotates, the arc groove will squeeze the sliding rod, and the sliding rod will drive the sliding bar to slide along the sliding groove, thereby driving the anal expansion plate to slide; when the anal expansion plates move away from each other, the patient's anus will be expanded, so that the anal expansion plates will fit the inner wall of the patient's anus; at this time, the spray assembly will spray medicine into the patient's anus; the purge assembly will blow on the patient's anus.

[0011] After the drug administration is completed, the anal dilator is restored to its original state through the driving component, and the excess liquid medicine and waste liquid such as pus in the anus are sucked out by the suction component. Then the anal dilator, the spray tube, the purge tube and the suction tube are removed and disinfected.

[0012] The above scheme has the following beneficial effects:

[0013] 1. In the prior art, the method mainly involves inserting a nozzle into the patient's anus and then spraying the liquid medicine into the patient's anus through the nozzle. However, since the nozzle size in the prior art is fixed and cannot be adjusted, it is difficult to adapt to patients with different anus sizes. If the nozzle size is small, the nozzle may fall off, resulting in failure to spray the medicine normally. If the nozzle size is too large, it will cause serious discomfort to the patient. The present invention rotates the rotating ring to drive the anal expansion plate to expand or contract synchronously, so that the diameter of the circular ring formed by the anal expansion plate can be freely adjusted. In the initial state, the diameter of the circular ring is the smallest, which facilitates the insertion of the anal expansion plate and the spray tube, purge tube and suction tube into the patient's anus. After insertion, the spacing between the anal expansion plates is increased so that each component fits the inner wall of the patient's anus, thereby better applying the medicine.

[0014] 2. Since there are a large number of wrinkles on the inner wall of the patient's anus, in existing drug delivery technology, the drug can often only be applied to the surface of the inner wall of the anus, resulting in the drug not being evenly applied to the wrinkles. The present invention can tighten the patient's anus through the design of the anal expansion plate, thereby allowing the drug to be applied more fully.

[0015] 3. The present invention allows for quick adjustment of the anal expansion plate position simply by rotating the rotating ring, making the entire medication process more efficient. Furthermore, while administering medication, the device blows air into the patient's anus during the dilation process, reducing discomfort. After medication is administered, the device aspirates excess medication and pus from the affected area, effectively improving patient comfort.

[0016] Furthermore, the driving assembly includes a controller and a telescopic rod hinged to the mounting plate, the output shaft of the telescopic rod is rotatably connected to the center rod, and the lower part of the center rod is rotatably connected to the outer wall of the rotating ring; an arc-shaped limit groove for the center rod to slide is opened on the mounting plate; the lower end of the center rod extends into the limit groove; the controller is used to control the operation of the telescopic rod, thereby driving the rotating ring to rotate.

[0017] Beneficial effects: The telescopic rod is started by the controller, and the output shaft of the telescopic rod extends and pushes the center rod to slide along the limit groove. At the same time, the center rod will push the rotation around the circular tube to rotate clockwise, thereby causing the sliding rod to slide outward, and then driving the sliding bar and the anal expansion plate to slide outward. At this time, the anal expansion plates move away from each other, so that the anal expansion plate fits against the inner wall of the patient's anus, which is convenient for subsequent drug administration.

[0018] Furthermore, the medicine delivery assembly includes several medicine liquid boxes fixedly connected to the top of the fixed ring, and the medicine liquid boxes are all located above the sliding groove; medicine delivery plates are laterally slidably fitted in the medicine liquid boxes, and the medicine delivery plates are fixedly connected to medicine delivery rods on the side close to the anal expansion plate, and the ends of the medicine delivery rods away from the medicine delivery plates pass through the medicine liquid boxes and are fixedly connected to the anal expansion plates adjacent to them; the medicine liquid boxes are connected to the adjacent spray pipes.

[0019] Beneficial effect: When the anal expansion plates move away from each other, the anal expansion plates will push the medicine delivery rod and the medicine delivery plate to slide into the medicine tank, thereby pumping the medicine into the spray pipe and spraying it onto the inner wall of the patient's anus; at this time, since the anal expansion plates move away from each other, the inner wall of the anus will be tightened, so that the medicine can be sprayed on the inner wall of the patient's anus more comprehensively.

[0020] Furthermore, the connection point between the liquid medicine tank and the spraying pipe is connected with a first one-way valve for preventing waste liquid from flowing into the liquid medicine tank.

[0021] Beneficial effect: The first one-way valve can prevent the liquid medicine and pus in the patient's anus from flowing back into the liquid medicine tank through the spray tube, thereby preventing the liquid medicine from being contaminated and ensuring the treatment effect.

[0022] Furthermore, the air supply assembly includes a gas box fixedly connected to the top of the mounting plate, an air supply rod hinged to the top of the center rod, the air supply rod extends into the gas box and is hinged to the air supply plate; the air supply plate slides laterally with the inner side wall of the gas box; the purge pipes are connected to the gas box; the side wall of the gas box is connected to a second one-way valve for air intake.

[0023] Beneficial effect: When the center rod slides upward along the limit groove, the center rod will also push the air supply rod to move upward, and then push the air supply plate to slide upward along the inner wall of the gas box, transporting the gas in the gas box to the purge tube and purge the patient's anus, thereby improving the patient's comfort.

[0024] Furthermore, the suction assembly includes a waste liquid tank fixedly connected to the top of the mounting plate, and a suction plate is laterally slidably fitted in the waste liquid tank; a suction rod is hingedly connected to the side of the suction plate close to the telescopic rod, and the suction rod passes through the side wall of the waste liquid tank and is hinged to the telescopic rod; the suction tubes are both connected to the side of the waste liquid tank away from the telescopic rod, and the connection point between the two is connected to a third one-way valve for liquid intake; the waste liquid tank is also connected to a discharge tube on the side away from the telescopic rod, and the connection point between the two is connected to a fourth one-way valve for liquid discharge.

[0025] Beneficial effect: When the output shaft of the telescopic rod is extended or retracted, the telescopic rod will rotate due to the hinged connection between the telescopic rod and the mounting plate, thereby pushing the suction rod to move laterally, and the suction rod will push the suction plate to move laterally along the inner wall of the waste liquid tank; thereby, the waste liquid in the patient's anus is sucked into the waste liquid tank through the drainage pipe and the third one-way valve, and then discharged through the fourth one-way valve and the drainage pipe.

[0026] Furthermore, a number of medical cotton strips for wiping the patient's anus are fixedly connected to the side wall of the rotating ring.

[0027] Beneficial effect: When the rotating ring rotates, it drives the medical cotton strip to rotate, thereby wiping the patient's anus and improving the cleanliness of the patient's anus.

[0028] Furthermore, a plurality of through holes are opened on the side walls of the medicine spraying pipe, the liquid suction pipe and the purge pipe.

[0029] Beneficial effects: The through-hole design can expand the processing area for spraying liquid medicine, absorbing waste liquid and blowing gas, thereby improving the efficiency of drug administration and care.

[0030] Furthermore, a convenient pipe is fixedly connected to the bottom of the circular groove.

[0031] Beneficial effects: The design of the convenient tube makes it easy for medical staff to insert the anal dilator, spray tube, suction tube and purge tube into the patient's anus, and also facilitates their subsequent removal.

[0032] Furthermore, the anal expansion plates are all conical in shape.

[0033] Beneficial effects: The conical anal expansion plate can slowly expand the patient's anus and reduce discomfort during the anal expansion process.

[0034] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 An axonometric view of the invented drug delivery device for anorectal surgical care.

[0036] Figure 2 It is an axonometric view of the mounting plate of the drug delivery device for anorectal surgical care of the present invention.

[0037] Figure 3 It is a cross-sectional view of the drug delivery device for anorectal surgical care of the present invention.

[0038] Figure 4 It is a top view of the rotating ring in the drug delivery device for anorectal surgery care of the present invention.

[0039] The figure marks in the drawings of the specification include: 1. mounting plate; 2. round tube; 3. rotating ring; 4. fixed ring; 5. sliding bar; 6. sliding rod; 7. anal expansion plate; 8. spray tube; 9. suction tube; 10. purge tube; 11. telescopic rod; 12. center rod; 13. liquid medicine tank; 14. medicine delivery plate; 15. medicine delivery rod; 16. gas box; 17. air delivery rod; 18. first one-way valve; 19. second one-way valve; 20. waste liquid tank; 21. suction plate; 22. suction rod; 23. third one-way valve; 24. drain pipe; 25. fourth one-way valve; 26. medical tampon; 27. convenient tube; 28. air delivery plate. DETAILED DESCRIPTION

[0040] The following is further described in detail through specific implementation methods:

[0041] Example 1:

[0042] As attached Figure 1-Figure 4 As shown: A drug delivery device for anorectal surgical care includes a mounting plate 1, a circular groove is opened on the mounting plate 1, a circular tube 2 is welded to the top of the circular groove, a rotating ring 3 is rotatably fitted on the circular tube 2, a fixed ring 4 is welded to the top of the circular tube 2, and the rotating ring 3 and the fixed ring 4 are rotatably fitted.

[0043] The fixed ring 4 is provided with a number of sliding grooves; sliding bars 5 are slidably fitted in the sliding grooves, and a sliding rod 6 is welded to the bottom of the sliding bar 5. The rotating ring 3 is provided with a number of arc grooves for the sliding rod 6 to slide, and the bottoms of the sliding rods 6 extend into the arc grooves adjacent to them; the end of the sliding bar 5 close to the center of the fixed ring 4 is welded with an anal expansion plate 7, and the top of the anal expansion plate 7 is fixedly bonded and connected to a spray pipe 8, a liquid suction pipe 9 and a purge pipe 10; the rotating ring 3 is provided with a driving component for driving the rotating ring 3 to rotate.

[0044] The mounting plate 1 is provided with a medicine delivery assembly for delivering medicine liquid to the medicine spraying pipe 8 , a gas delivery assembly for delivering gas to the purge pipe 10 , and a suction assembly for sucking waste liquid through the liquid suction pipe 9 .

[0045] like Figure 1As shown, the drive assembly includes a controller and a telescopic rod 11 hinged to the mounting plate 1, the output shaft of the telescopic rod 11 is rotatably connected to the center rod 12, and the lower part of the center rod 12 is rotatably connected to the outer wall of the rotating ring 3; an arc-shaped limiting groove for the sliding of the center rod 12 is opened on the mounting plate 1; the lower end of the center rod 12 extends into the limiting groove; the controller is used to control the operation of the telescopic rod 11, thereby driving the rotating ring 3 to rotate.

[0046] like Figure 2 As shown, the medicine delivery assembly includes several medicine tanks 13 welded to the top of the fixed ring 4. Each medicine tank 13 is located above the sliding groove. A medicine delivery plate 14 slides horizontally inside each medicine tank 13. Each medicine delivery plate 14 is welded to a medicine delivery rod 15 on the side near the anal expansion plate 7. The end of the medicine delivery rod 15 away from the medicine delivery plate 14 passes through the medicine tank 13 and is welded to the adjacent anal expansion plate 7. Each medicine tank 13 is connected to the adjacent medicine spray pipe 8. The connection between the medicine tank 13 and the medicine spray pipe 8 is connected to a first one-way valve 18 to prevent waste liquid from flowing into the medicine tank 13.

[0047] like Figure 2 As shown, the air supply assembly includes a gas box 16 welded to the top of the mounting plate 1, and an air supply rod 17 is hinged on the top of the center rod 12. The air supply rod 17 extends into the gas box 16 and is hinged to an air supply plate 28; the air supply plate 28 slides laterally with the inner wall of the gas box 16; the purge pipes 10 are connected to the gas box 16; and the side wall of the gas box 16 is connected to a second one-way valve 19 for air intake.

[0048] like Figure 2 As shown, the suction assembly includes a waste liquid tank 20 welded to the top of the mounting plate 1, and a suction plate 21 is laterally slidably fitted in the waste liquid tank 20; a suction rod 22 is hingedly connected to the left side of the suction plate 21, and the suction rod 22 passes through the side wall of the waste liquid tank 20 and is hinged to the telescopic rod 11; the suction tubes 9 are all connected to the side of the waste liquid tank 20 away from the telescopic rod 11, and the connection between the two is connected to a third one-way valve 23 for liquid inlet; the right side of the waste liquid tank 20 is also connected to a drain pipe 24, and the connection between the two is connected to a fourth one-way valve 25 for liquid discharge.

[0049] The specific implementation process is as follows:

[0050] like Figure 1 As shown, in the initial state, the output shaft of the telescopic rod 11 is in a contracted state, and the anal expansion plates 7 are close to each other. At this time, the diameter of the ring formed by the anal expansion plates 7 is the smallest, which is convenient for medical staff to insert it into the patient's anus.

[0051] by Figure 2For example, after the anal expansion plate 7, the spray tube 8, the purge tube 10 and the suction tube 9 are inserted into the patient's anus, the telescopic rod 11 is started by the controller, and the output shaft of the telescopic rod 11 extends upward and pushes the center rod 12 to slide upward along the limit groove. At the same time, the center rod 12 will push the rotating ring 3 to rotate clockwise around the circular tube 2, thereby causing the sliding rod 6 to slide outward, and then driving the sliding bar 5 and the anal expansion plate 7 to slide outward. At this time, the anal expansion plates 7 move away from each other, so that the anal expansion plate 7 fits against the inner wall of the patient's anus, and at the same time tightens the wrinkled skin of the inner wall of the patient's anus to facilitate subsequent drug administration.

[0052] by Figure 2 For example, when the anal expansion plates 7 move away from each other, they push the medicine delivery rod 15 and the medicine delivery plate 14 to slide into the medicine liquid tank 13, thereby pumping the medicine liquid into the spray tube 8 and spraying it onto the inner wall of the patient's anus. At this time, because the inner wall of the anus is tightened by the anal expansion plates 7, the medicine liquid can be sprayed more comprehensively on the inner wall of the patient's anus. During the spraying process, the first one-way valve 18 only allows the medicine liquid to flow into the patient's anus, preventing the medicine liquid and pus in the patient's anus from flowing back into the medicine liquid tank 13 through the spray tube 8, thereby preventing the medicine liquid from being contaminated and ensuring the cleanliness of the medicine liquid and the therapeutic effect.

[0053] by Figure 2 For example, when the output shaft of the telescopic rod 11 pushes the center rod 12 to slide upward along the limit groove, the center rod 12 will also push the air supply rod 17 to move upward, and then push the air supply plate 28 to slide upward along the inner wall of the gas box 16, and the gas in the gas box 16 is transported to the purge tube 10 and purges the patient's anus; reducing the patient's discomfort during anal dilation and improving the patient's comfort; when the output shaft of the telescopic rod 11 contracts, the air supply rod 17 and the air supply plate 28 will also move downward, and then replenish gas into the gas box 16 through the second one-way valve 19.

[0054] by Figure 2 For example, when the medication is completed, the medical staff controls the output shaft of the telescopic rod 11 to retract through the controller. Since the telescopic rod 11 is hinged to the mounting plate 1, the telescopic rod 11 will rotate clockwise around the hinge point, thereby pulling the suction rod 22 to move to the left, and the suction rod 22 will push the suction plate 21 to move to the left along the inner wall of the waste liquid tank 20; thereby, the waste liquid in the patient's anus is sucked into the waste liquid tank 20 through the drainage pipe 24 and the third one-way valve 23; when the telescopic rod 11 is extended again, it will push the suction rod 22 and the suction plate 21 to move to the right along the inner wall of the waste liquid tank 20, and then discharge the waste liquid in the waste liquid tank 20 through the fourth one-way valve 25 and the drainage pipe 24.

[0055] The anal expansion plates 7 are all conical in shape, and the conical anal expansion plates 7 can slowly expand the patient's anus and reduce discomfort during the anal expansion process.

[0056] This embodiment can freely adjust the position of the anal expansion plate 7, thereby making the device adaptable to different patients; improving the convenience and comfort of drug administration and care; at the same time, drug spraying, waste liquid adsorption and perianal purging are carried out simultaneously, further improving the efficiency and effect of drug administration and care.

[0057] Example 2:

[0058] As attached Figure 4 As shown, different from the above embodiment, a plurality of medical cotton strips 26 for wiping the patient's anus are welded on the side wall of the rotating ring 3.

[0059] The specific implementation process is as follows: when the rotating ring 3 rotates driven by the telescopic rod 11, the medical cotton strip 26 will also wipe the patient's anus, thereby improving the cleanliness of the patient's anus.

[0060] Example 3:

[0061] As attached Figure 2 As shown, the difference from the above embodiment is that a convenient tube 27 is fixedly bonded and connected to the bottom of the circular groove.

[0062] The specific implementation process is as follows: The design of the convenient tube 27 makes it easy for medical staff to insert the anal expansion plate 7, the spray tube 8, the suction tube 9 and the purge tube 10 into the patient's anus, and also makes it easy to remove them later.

[0063] Example 4:

[0064] As attached Figure 1 As shown, different from the above embodiment, a plurality of through holes are opened on the side walls of the medicine spraying pipe 8, the liquid suction pipe 9 and the purge pipe 10.

[0065] The specific implementation process is as follows: the through holes on the side walls of the spray tube 8, the liquid suction tube 9 and the purge tube 10 can respectively expand the area of spraying the liquid medicine, absorbing the waste liquid and blowing the gas, thereby improving the efficiency of drug administration and care.

[0066] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A drug delivery device for anorectal surgery, characterized in that: The mounting plate (1) comprises a circular groove, a circular tube (2) fixedly connected to the top of the circular groove, a rotating ring (3) rotatably fitted on the circular tube (2), a fixed ring (4) fixedly connected to the top of the circular tube (2), and the rotating ring (3) rotatably fitted with the fixed ring (4); The fixed ring (4) is provided with a plurality of sliding grooves; the sliding grooves are all slidably fitted with sliding bars (5), the bottom of the sliding bars (5) is fixedly connected to a sliding rod (6); the rotating ring (3) is provided with a plurality of arc grooves for the sliding rods (6) to slide, and the bottoms of the sliding rods (6) are all extended into the arc grooves adjacent thereto; the ends of the sliding bars (5) close to the center of the fixed ring (4) are all fixedly connected to an anal expansion plate (7), and the tops of the anal expansion plates (7) are all fixedly connected to a spraying pipe (8), a liquid suction pipe (9) and a purge pipe (10); the rotating ring (3) is provided with a driving assembly for driving the rotating ring (3) to rotate; The mounting plate (1) is provided with a medicine delivery assembly for delivering medicine liquid to the medicine spraying pipe (8), a gas delivery assembly for delivering gas to the purge pipe (10), and a suction assembly for sucking waste liquid through the liquid suction pipe (9).

2. The drug delivery device for anorectal surgery care according to claim 1, characterized in that: The driving assembly comprises a controller and a telescopic rod (11) hinged to a mounting plate (1); an output shaft of the telescopic rod (11) is rotatably connected to a center rod (12); a lower portion of the center rod (12) is rotatably connected to an outer wall of a rotating ring (3); an arc-shaped limiting groove for sliding the center rod (12) is provided on the mounting plate (1); the lower end of the center rod (12) extends into the limiting groove; and the controller is used to control the operation of the telescopic rod (11), thereby driving the rotating ring (3) to rotate.

3. The drug delivery device for anorectal surgery care according to claim 2, characterized in that: The medicine delivery assembly includes a plurality of medicine liquid boxes (13) fixedly connected to the top of the fixed ring (4), and the medicine liquid boxes (13) are all located above the sliding groove; a medicine delivery plate (14) is laterally slidably fitted in the medicine liquid box (13), and a medicine delivery rod (15) is fixedly connected to the side of the medicine delivery plate (14) close to the anal expansion plate (7); the end of the medicine delivery rod (15) away from the medicine delivery plate (14) passes through the medicine liquid box (13) and is fixedly connected to the adjacent anal expansion plate (7); the medicine liquid box (13) is communicated with the adjacent medicine spray pipe (8).

4. The drug delivery device for anorectal surgery care according to claim 3, characterized in that: The connection point between the liquid medicine tank (13) and the spraying pipe (8) is connected with a first one-way valve (18) for preventing waste liquid from flowing into the liquid medicine tank (13).

5. The drug delivery device for anorectal surgery care according to claim 4, characterized in that: The air supply assembly comprises a gas box (16) fixedly connected to the top of the mounting plate (1); an air supply rod (17) is hingedly connected to the top of the center rod (12); the air supply rod (17) extends into the gas box (16) and is hingedly connected to an air supply plate (28); the air supply plate (28) is laterally slidably engaged with the inner side wall of the gas box (16); the purge pipe (10) is connected to the gas box (16); and the side wall of the gas box (16) is connected to a second one-way valve (19) for air intake.

6. The drug delivery device for anorectal surgery care according to claim 5, characterized in that: The suction assembly comprises a waste liquid tank (20) fixedly connected to the top of the mounting plate (1), a suction plate (21) being laterally slidably fitted in the waste liquid tank (20); a suction rod (22) being hingedly connected to the side of the suction plate (21) close to the telescopic rod (11), the suction rod (22) passing through the side wall of the waste liquid tank (20) and being hingedly connected to the telescopic rod (11); a liquid suction pipe (9) being connected to the side of the waste liquid tank (20) away from the telescopic rod (11), and a third one-way valve (23) for liquid inlet being connected at the connection point between the two; a liquid discharge pipe (24) being connected to the side of the waste liquid tank (20) away from the telescopic rod (11), and a fourth one-way valve (25) for liquid discharge being connected at the connection point between the two.

7. The drug delivery device for anorectal surgery care according to claim 6, characterized in that: A plurality of medical cotton strips (26) for wiping the anus of a patient are fixedly connected to the side wall of the rotating ring (3).

8. The drug delivery device for anorectal surgery care according to claim 7, characterized in that: A plurality of through holes are formed on the side walls of the medicine spraying pipe (8), the liquid suction pipe (9) and the purge pipe (10).

9. The drug delivery device for anorectal surgery care according to claim 8, characterized in that: The bottom of the circular groove is fixedly connected with a convenient pipe (27).

10. The drug delivery device for anorectal surgery care according to claim 9, characterized in that: The anal expansion plates (7) are all tapered.

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