Bladder perfusion chemotherapy device and method for observing drug distribution in bladder

Abstract

The invention discloses a bladder perfusion chemotherapy device and a bladder drug distribution observation method, relates to the technical field of bladder perfusion chemotherapy instruments, and provides the following scheme that the bladder perfusion chemotherapy device comprises a drug perfusion mechanism, and a perfusion catheter piece is arranged at the front end of the drug perfusion mechanism; a bladder endoscope assembly is arranged in the perfusion catheter piece in a penetrating manner; the medicine infusion mechanism comprises a tank body. According to the technical scheme, the semiconductor chilling plates are arranged on the medicine infusion mechanism, the heat dissipation end faces of the semiconductor chilling plates are used for heating medicine in a controlled mode, discomfort caused when the medicine is conveyed into the bladder is reduced, meanwhile, the medicine is pushed into the bladder in a pneumatic mode, and the medicine is conveyed into the bladder in a multi-angle and multi-direction mode through the infusion catheter; in addition, the movable endoscope is arranged on the perfusion catheter in a penetrating mode, and the distribution condition of the medicine in the bladder is observed in an endoscope mode.

Description

Technical Field

[0001] The invention relates to the technical field of bladder perfusion chemotherapy instruments, and in particular to a bladder perfusion chemotherapy device and a method for observing drug distribution in a bladder. Background Art

[0002] Bladder instillation therapy is one of the most common bladder cancer treatment methods. It belongs to intracavitary chemotherapy. Medical personnel insert a catheter into the patient's bladder to inject chemotherapy drugs, and then let the patient empty the bladder after a period of time. Bladder instillation can be used alone or as a local adjuvant treatment after transurethral surgery. Chemotherapy drugs can be directly instilled into the bladder. Its advantage is that it does not enter the whole body and has little effect on the body. However, when the bladder is instilled, the distribution of the drug solution can be seen or observed. It is difficult to judge whether there are any missed areas. The guidelines do not have a clear statement on the body position after instillation; furthermore, non-muscle-invasive bladder cancer requires immediate instillation after surgery. Blind instillation of drugs may cause bladder perforation. In clinical practice, patients are asked to change their body positions to the left, right, prone, and supine to achieve full contact of the drug solution with the bladder mucosa and play a role in killing tumor cells. However, this way of changing the body position back and forth to make the drug uniform in the bladder is difficult to apply to some patients with limited mobility and patients who are instilled immediately after surgery. Therefore, a person skilled in the art hereby proposes a bladder instillation chemotherapy device and a method for observing the distribution of drugs in the bladder. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that the distribution of the drug solution cannot be seen or observed while the drug is being instilled in the bladder, and to provide a bladder instillation chemotherapy device and a method for observing the drug distribution in the bladder.

[0004] The above object of the present invention is achieved as follows: a bladder infusion chemotherapy device, which includes a drug infusion mechanism, a front end of which is provided with an infusion catheter, and a bladder endoscope assembly is provided inside the infusion catheter;

[0005] The drug infusion mechanism includes a tank body, a rubber liquid-pushing plate movably arranged in the inner cavity of the tank body, and a jacket wrapped around the outer surface of the tank body, wherein the rubber liquid-pushing plate divides the inner cavity of the tank body into two parts, a front part and a rear part, an upper surface of the tank body is provided with an air inlet terminal penetrating through the rear section of the inner cavity, and a right side surface of the tank body is provided with a liquid inlet terminal penetrating through the front section of the inner cavity, the air inlet terminal is located at the rear side of the rubber liquid-pushing plate, and the liquid inlet terminal is located at the front side of the rubber liquid-pushing plate; 6-8 semiconductor cooling sheets are arranged in a circular array on the inner surface of the 16);

[0006] The irrigation catheter assembly includes a tube body, an infusion tube fixed in the front end port of the tube body, and a movable tube hinged on the lower surface of the infusion tube. A blocking block is fixedly connected to the inner cavity of the tube body. An endoscope channel for a bladder endoscope assembly to pass through is provided in the middle area of ​​the inner part of the infusion tube. 3-6 drug circulation cavities for drug circulation are provided in a circular array in the inner part of the infusion tube. 30-50 drug dispersing holes are provided in a circular array in the front section of the outer ring of the infusion tube.

[0007] The bladder endoscope assembly comprises an image transmitter, an endoscope catheter connected to the front end of the image transmitter, and an optical lens fixed to the front end of the endoscope catheter.

[0008] In the above-mentioned bladder infusion chemotherapy device, preferably: the upper surface and the right side surface of the tank body are respectively provided with through holes for the air inlet end and the liquid inlet end to pass through, the inner ports of the air inlet end and the liquid inlet end are flush with the inner cavity side wall of the tank body, and a positioning block is fixedly connected to the upper surface of the inner cavity of the tank body, the positioning block is located in front of the inner port of the air inlet end, and the rear surface of the rubber liquid pushing plate is in contact with the front side of the positioning block.

[0009] In the above-mentioned bladder infusion chemotherapy device, preferably: a return spring is fixedly connected to the rear surface of the rubber liquid pushing plate, the rear end of the return spring is fixedly connected to the inner cavity side wall of the tank body, and a liquid outlet nozzle is provided at the front end of the tank body, and the inner wall of the front end port of the liquid outlet nozzle is provided with a thread.

[0010] In the above-mentioned bladder instillation chemotherapy device, preferably: the inner ring surface of the jacket is provided with 6-8 grooves in a circular array for embedding semiconductor refrigeration plates, the heating end surface of the semiconductor refrigeration plate is in contact with the outer ring surface of the tank body, and the cooling end surface of the semiconductor refrigeration plate is connected to a plurality of fins passing through the jacket.

[0011] In the above-mentioned bladder instillation chemotherapy device, preferably: a chamber is provided inside the tube body, the blocking block divides the internal space of the chamber into two parts, a front part and a rear part, a through hole is provided inside the blocking block for the endoscopic catheter to pass through and rotate, and the inner wall of the through hole inside the blocking block is in close contact with the outer ring surface of the endoscopic catheter.

[0012] In the above-mentioned bladder instillation chemotherapy device, preferably: a sealing end cap is fixedly connected to the left surface of the tube body through a plastic strip, the inner surface of the sealing end cap is provided with a thread, and the outer ring surface of the rear end of the tube body is provided with a thread matching therewith.

[0013] In the above-mentioned bladder infusion chemotherapy device, preferably: the end surface of the infusion tube located in the inner cavity of the tube body is provided with a plurality of openings in a circular array, and the openings are interconnected with the inner space of the drug circulation cavity.

[0014] In the above-mentioned bladder instillation chemotherapy device, preferably: a protrusion is fixedly connected to the bottom surface of the tube body, a connecting piece is rotatably connected to the inside of the protrusion via an axle pin, the bottom end of the connecting piece is fixedly connected to the top surface of the movable tube, and an axial hole for the axle pin to pass through is provided inside the protrusion and the connecting piece.

[0015] In the above-mentioned bladder infusion chemotherapy device, preferably: the rear end port of the movable tube is provided with a connecting tube inserted into the inside of the liquid outlet nozzle, the front end of the movable tube is fixedly connected with a hose penetrating into the inner cavity of the tube body, and the end of the hose penetrating into the inside of the tube body is located on the front side of the blocking block.

[0016] The present invention also provides a method for observing drug distribution in the bladder, comprising the following steps:

[0017] S1: After the infusion tube enters the bladder along the urethra, the sealing end cap is opened and the endoscope catheter and the optical lens are conveyed into the bladder along the endoscope channel, and the blocking block seals the endoscope catheter at the same time;

[0018] S2: Infuse the drugs needed for bladder chemotherapy into the front area of ​​the inner cavity of the tank through the liquid inlet end, use the heating end surface of the semiconductor refrigeration sheet to heat the drugs inside the tank, and at the same time, the cooling end surface of the semiconductor refrigeration sheet releases the low temperature to the outside through the fins, and use the temperature controller adapted to the semiconductor refrigeration sheet to control the heating temperature of the semiconductor refrigeration sheet, so as to reduce the discomfort of the drugs infused into the bladder by heating the drugs inside the tank;

[0019] S3: inserting the air tube of the medical air pump into the air inlet end, using the gas to be delivered to the rear area of ​​the inner cavity of the tank body to push the rubber liquid pusher forward, and the rubber liquid pusher pushes the medicine in the front side of the inner cavity of the tank body along the liquid outlet nozzle into the inside of the perfusion catheter component;

[0020] S4: Under the pushing action of the rubber push plate, the drug is infused into the bladder along the drug flow cavity and drug dispersion holes from multiple directions and angles. During and after the infusion, the optical lens and endoscopic catheter are used to rotate and monitor the situation inside the bladder.

[0021] It can be seen from the above technical solutions that the present invention provides a bladder instillation chemotherapy device and a method for observing drug distribution in the bladder. Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the technical solution of the present invention, a number of semiconductor cooling sheets are arranged on the drug infusion mechanism, and the heat dissipation end surface of the semiconductor cooling sheet is used to control the heating of the drug, thereby reducing the discomfort when it is delivered to the bladder. At the same time, the drug is pneumatically pushed into the bladder, and is delivered to the inside of the bladder at multiple angles and directions using an infusion catheter, so that the drug is evenly distributed in the bladder. In addition, a movable endoscope is provided through the infusion catheter to observe the distribution of the drug in the bladder by endoscopy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the overall structure of the bladder instillation chemotherapy device;

[0025] Figure 2 A schematic diagram of a drug infusion mechanism;

[0026] Figure 3 is a schematic diagram of an irrigation catheter component;

[0027] Figure 4 This is a schematic diagram of the drug delivery pipe;

[0028] Figure 5 Schematic diagram of the cystoendoscope components.

[0029] Attached Figure 1 -Attached Figure 5 The corresponding relationship of the parts is as follows:

[0030] 1. Drug infusion mechanism; 11. Tank body; 12. Air inlet end; 13. Fins; 14. Liquid outlet nozzle; 15. Semiconductor refrigeration plate; 16. Jacket; 17. Liquid inlet end; 18. Rubber liquid push plate; 19. Return spring; 2. Infusion catheter component; 21. Tube body; 22. Blocking block; 23. Connecting hole; 24. Endoscope channel; 25. Infusion tube; 26. Drug circulation cavity; 27. Drug dispersion hole; 28. Bump; 29. ​​Axis pin; 210. Sealing end cap; 211. Chamber; 212. Movable tube; 213. Connecting piece; 214. Hose; 215. Connecting tube; 3. Bladder endoscope assembly; 31. Image transmitter; 32. Endoscope catheter; 33. Optical lens. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0033] Embodiment: A preferred technical solution of a bladder instillation chemotherapy device:

[0034] Refer to the instruction manual Figure 1 As shown: it comprises a drug infusion mechanism 1, a front end of which is provided with an infusion catheter 2, and a bladder endoscope assembly 3 is provided through the interior of the infusion catheter 2;

[0035] Refer to the instruction manual Figure 2 As shown: the drug infusion mechanism 1 includes a tank body 11, a rubber liquid pushing plate 18 movably arranged in the inner cavity of the tank body 11, and a jacket 16 wrapped around the outer surface of the tank body 11, the rubber liquid pushing plate 18 divides the inner cavity of the tank body 11 into two parts, front and back, the upper surface of the tank body 11 is provided with an air inlet terminal 12 penetrating the rear section of the inner cavity, and the right side surface of the tank body 11 is provided with a liquid inlet terminal 17 penetrating the front section of the inner cavity, the air inlet terminal 12 is located at the rear side of the rubber liquid pushing plate 18, and the liquid inlet terminal 17 is located at the front side of the rubber liquid pushing plate 18; 6-8 semiconductor cooling sheets 15 are arranged in a ring array on the inner surface of 16;

[0036] Refer to the instruction manual Figure 3 and attached Figure 4 As shown: the perfusion catheter 2 includes a tube body 21, an infusion tube 25 fixed in the front end port of the tube body 21, and a movable tube 212 hinged on the lower surface of the infusion tube 25, a blocking block 22 is fixedly connected to the inner cavity of the tube body 21, an endoscope channel 24 for the bladder endoscope assembly 3 to pass through is opened in the middle area of ​​the inner part of the infusion tube 25, 3-6 drug flow cavities 26 for drug flow are opened in a circular array in the inner part of the infusion tube 25, and 30-50 drug dispersing holes 27 are opened in a circular array in the front section of the outer ring of the infusion tube 25;

[0037] Refer to the instruction manual Figure 5 As shown, the bladder endoscope assembly 3 includes an image transmitter 31 , an endoscope catheter 32 connected to the front end of the image transmitter 31 , and an optical lens 33 fixed to the front end of the endoscope catheter 32 .

[0038] Refer to the instruction manual Figure 2 As shown: the upper surface and the right side surface of the tank body 11 are respectively provided with through holes for the air inlet terminal 12 and the liquid inlet terminal 17 to pass through, the inner ports of the air inlet terminal 12 and the liquid inlet terminal 17 are flush with the inner cavity side wall of the tank body 11, and a positioning block is fixedly connected to the upper surface of the inner cavity of the tank body 11, and the positioning block is located in front of the inner port of the air inlet terminal 12, and the rear surface of the rubber liquid pushing plate 18 is in contact with the front side of the positioning block.

[0039] Refer to the instruction manual Figure 2 As shown: the rear surface of the rubber liquid push plate 18 is fixedly connected with a return spring 19, the rear end of the return spring 19 is fixedly connected with the inner cavity side wall of the tank body 11, the front end of the tank body 11 is provided with a liquid outlet 14, and the inner wall of the front end port of the liquid outlet 14 is provided with a thread. The inner ring surface of the jacket 16 is provided with 6-8 grooves in an annular array for the semiconductor cooling plate 15 to be embedded. The heating end surface of the semiconductor cooling plate 15 is in contact with the outer ring surface of the tank body 11, and the cooling end surface of the semiconductor cooling plate 15 is connected with a plurality of fins 13 that penetrate the jacket 16.

[0040] Refer to the instruction manual Figure 3 As shown: the interior of the tube body 21 is provided with a chamber 211, and the blocking block 22 divides the interior space of the chamber 211 into two parts, front and rear. The interior of the blocking block 22 is provided with a through hole for the endoscopic catheter 32 to penetrate and rotate, and the inner wall of the through hole inside the blocking block 22 is in close contact with the outer ring surface of the endoscopic catheter 32. The left surface of the tube body 21 is fixedly connected with a sealing end cap 210 through a plastic strip, and the inner surface of the sealing end cap 210 is provided with a thread, and the outer ring surface of the rear end of the tube body 21 is provided with a thread adapted thereto. The end surface of the infusion tube 25 located in the inner cavity of the tube body 21 is provided with a plurality of openings in a circular array, and the openings are all mutually connected with the inner space of the drug circulation cavity 26. The bottom surface of the tube body 21 is fixedly connected with a protrusion 28, and the inside of the protrusion 28 is rotatably connected with a connecting piece 213 through an axle pin 29. The bottom end of the connecting piece 213 is fixedly connected to the top surface of the movable tube 212, and the inside of the protrusion 28 and the connecting piece 213 are both provided with an axial hole for the axle pin 29 to penetrate. The rear end port of the movable tube 212 is provided with a connecting tube 215 inserted into the inside of the liquid outlet nozzle 14, and the front end of the movable tube 212 is fixedly connected with a hose 214 that penetrates into the inner cavity of the tube body 21, and the end of the hose 214 that penetrates into the inside of the tube body 21 is located at the front side of the blocking block 22.

[0041] According to the above preferred technical solution, the workflow of the technical solution is described as follows:

[0042] After the infusion tube 25 enters the bladder along the urethra, the sealing end cap 210 is opened and the endoscopic catheter 32 and the optical lens 33 are transported into the bladder along the endoscope channel 24, and the blocking block 22 seals the endoscopic catheter 32 at the same time; the drugs required for bladder chemotherapy are infused into the front area of ​​the inner cavity of the tank body 11 through the liquid inlet end 17, and the drugs inside the tank body 11 are heated by the heating end surface of the semiconductor refrigeration sheet 15. At the same time, the cooling end surface of the semiconductor refrigeration sheet 15 releases the low temperature to the outside through the fins 13, and the heating temperature of the semiconductor refrigeration sheet 15 is controlled by a temperature controller adapted to the semiconductor refrigeration sheet 15. Heating the medicine inside the tank body 11 reduces the discomfort caused by drug infusion into the bladder; inserting the air tube of the medical air pump into the air inlet end 12, and using the gas to be delivered to the rear area of ​​the inner cavity of the tank body 11 to push the rubber liquid pushing plate 18 forward, the rubber liquid pushing plate 18 pushes the medicine on the front side of the inner cavity of the tank body 11 along the liquid outlet nozzle 14 into the infusion catheter part 2; under the pushing action of the rubber liquid pushing plate 18, the medicine is infused into the bladder along the drug circulation cavity 26 and the drug dispersion hole 27 from multiple directions and angles, and during and after the infusion process, the optical lens 33 and the endoscopic catheter 32 are used to rotate and monitor the situation inside the bladder.

[0043] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

Claims

1. A bladder infusion chemotherapy device, comprising a drug infusion mechanism (1), characterized in that: The front end of the drug infusion mechanism (1) is provided with an infusion catheter (2), and a bladder endoscope assembly (3) is provided through the interior of the infusion catheter (2); The drug infusion mechanism (1) comprises a tank body (11), a rubber liquid pushing plate (18) movably arranged in the inner cavity of the tank body (11), and a jacket (16) wrapped around the outer ring surface of the tank body (11), wherein the rubber liquid pushing plate (18) divides the inner cavity of the tank body (11) into two parts, front and rear, and the upper surface of the tank body (11) is provided with an air inlet terminal (12) penetrating the rear section of the inner cavity, and the right side surface of the tank body (11) is provided with a liquid inlet terminal (17) penetrating the front section of the inner cavity, and the air inlet terminal (12) is located at the rear side of the rubber liquid pushing plate (18), and the liquid inlet terminal (17) is located at the front side of the rubber liquid pushing plate (18); 6-8 semiconductor cooling plates (15) are arranged in a circular array on the inner surface of the rubber liquid pushing plate (16); The irrigation catheter component (2) comprises a tube body (21), an infusion tube (25) fixed in the front end port of the tube body (21), and a movable tube (212) hinged on the lower surface of the infusion tube (25); a blocking block (22) is fixedly connected in the inner cavity of the tube body (21); an endoscope channel (24) for a bladder endoscope assembly (3) to pass through is provided in the middle region of the inner part of the infusion tube (25); 3 to 6 drug circulation cavities (26) for drug circulation are provided in an annular array in the inner part of the infusion tube (25); and 30 to 50 drug dispersing holes (27) are provided in an annular array in the front section of the outer ring of the infusion tube (25); The bladder endoscope assembly (3) comprises an image transmitter (31), an endoscope catheter (32) connected to the front end of the image transmitter (31), and an optical lens (33) fixed to the front end of the endoscope catheter (32).

2. A bladder instillation chemotherapy device according to claim 1, characterized in that: The upper surface and right side surface of the tank body (11) are respectively provided with through holes for the air inlet end head (12) and the liquid inlet end head (17) to pass through, and the inner ports of the air inlet end head (12) and the liquid inlet end head (17) are both flush with the inner cavity side wall of the tank body (11). A positioning block is fixedly connected to the upper surface of the inner cavity of the tank body (11), and the positioning block is located in front of the inner port of the air inlet end head (12), and the rear surface of the rubber liquid pushing plate (18) is in contact with the front side of the positioning block.

3. The bladder instillation chemotherapy device according to claim 1, characterized in that: A return spring (19) is fixedly connected to the rear surface of the rubber liquid pushing plate (18), and the rear end of the return spring (19) is fixedly connected to the inner cavity side wall of the tank body (11). The front end of the tank body (11) is provided with a liquid outlet nozzle (14), and the inner wall of the front end port of the liquid outlet nozzle (14) is provided with a thread.

4. The bladder instillation chemotherapy device according to claim 1, characterized in that: The inner ring surface of the jacket (16) is provided with 6-8 grooves in a circular array for embedding the semiconductor cooling plate (15), the heating end surface of the semiconductor cooling plate (15) is in contact with the outer ring surface of the tank body (11), and the cooling end surface of the semiconductor cooling plate (15) is connected to a plurality of fins (13) that penetrate the jacket (16).

5. The bladder instillation chemotherapy device according to claim 1, characterized in that: The tube body (21) is provided with a chamber (211) inside, and the blocking block (22) divides the internal space of the chamber (211) into two parts, front and rear. The blocking block (22) is provided with a through hole for the endoscopic catheter (32) to pass through and rotate. The inner wall of the through hole inside the blocking block (22) is in close contact with the outer ring surface of the endoscopic catheter (32).

6. The bladder instillation chemotherapy device according to claim 1, characterized in that: A sealing end cover (210) is fixedly connected to the left side surface of the tube body (21) via a plastic strip, the inner side surface of the sealing end cover (210) is provided with a thread, and a thread matching the thread is provided on the outer ring surface of the rear end of the tube body (21).

7. The bladder instillation chemotherapy device according to claim 1, characterized in that: The end surface of the infusion tube (25) located in the inner cavity of the tube body (21) is provided with a plurality of openings in a circular array, and the openings are all interconnected with the inner space of the drug circulation cavity (26).

8. The bladder instillation chemotherapy device according to claim 1, characterized in that: A protrusion (28) is fixedly connected to the bottom surface of the tube body (21), and a connecting piece (213) is rotatably connected to the inside of the protrusion (28) via an axle pin (29). The bottom end of the connecting piece (213) is fixedly connected to the top surface of the movable tube (212), and an axial hole for the axle pin (29) to pass through is provided inside the protrusion (28) and the connecting piece (213).

9. The bladder instillation chemotherapy device according to claim 1, characterized in that: The rear end port of the movable tube (212) is provided with a connecting tube (215) inserted into the interior of the liquid outlet nozzle (14), and the front end of the movable tube (212) is fixedly connected with a hose (214) penetrating into the inner cavity of the tube body (21), and the end of the hose (214) penetrating into the interior of the tube body (21) is located at the front side of the blocking block (22).

10. A method for observing drug distribution in the bladder, characterized in that: Applicable to a bladder instillation chemotherapy device according to any one of claims 1 to 9, the observation method comprises the following steps: S1: After the infusion tube (25) enters the bladder along the urethra, the sealing end cap (210) is opened and the endoscope catheter (32) and the optical lens (33) are transported into the bladder along the endoscope channel (24), and the blocking block (22) seals the endoscope catheter (32); S2: Infusing drugs required for bladder chemotherapy into the front area of ​​the inner cavity of the tank body (11) through the liquid inlet end (17), heating the drugs inside the tank body (11) using the heating end surface of the semiconductor cooling sheet (15), and at the same time, the cooling end surface of the semiconductor cooling sheet (15) releases the low temperature to the outside through the fins (13), and controlling the heating temperature of the semiconductor cooling sheet (15) using a temperature controller compatible with the semiconductor cooling sheet (15), thereby reducing the discomfort caused by the drugs being infused into the bladder by heating the drugs inside the tank body (11); S3: inserting the air tube of the medical air pump into the air inlet end (12), and using the gas delivered to the rear area of ​​the inner cavity of the tank body (11) to push the rubber liquid push plate (18) forward, so that the rubber liquid push plate (18) pushes the medicine on the front side of the inner cavity of the tank body (11) along the liquid outlet nozzle (14) into the interior of the perfusion catheter member (2); S4: Under the pushing action of the rubber liquid pushing plate (18), the drug is infused into the bladder along the drug circulation cavity (26) and the drug dispersion hole (27) from multiple directions and angles. During and after the infusion, the optical lens (33) and the endoscopic catheter (32) are used to rotate and monitor the situation inside the bladder.

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