CN113058136A

CN113058136A - Liquid injection pipe, air bag, device and using method for upper urothelial cancer perfusion

Info

Publication number: CN113058136A
Application number: CN202110335145.7A
Authority: CN
Inventors: 陈勇吉; 廖洪; 昝维; 吴毅; 毛顿; 李曾; 肖英明; 周术奎; 杨盛柯; 钟磊; 刘金鹏; 陈丽
Original assignee: Sichuan Cancer Hospital
Current assignee: Sichuan Cancer Hospital
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-07-02

Abstract

The invention discloses a liquid injection pipe for upper urothelial cancer perfusion, which comprises a liquid injection pipe body, wherein the pipe head of the liquid injection pipe body is a closed arc-shaped blind end, and the lower end of the arc-shaped blind end is provided with a plurality of liquid outlet holes; the air bag comprises an air bag body, the air bag body is provided with an air bag opening and two annular sleeving holes, and the annular sleeving holes are matched with the liquid injection pipe body; the device comprises the liquid injection pipe body, the air bag body, a liquid discharge pipe and an air pipe; the pipe head of the liquid discharge pipe is a closed arc-shaped blind end, and the lower part of the arc-shaped blind end is provided with a plurality of liquid discharge ports; a nested liquid injection pipe body is fixed in one lantern ring hole of the air bag body, and a nested liquid discharge pipe is fixed in the other lantern ring hole; the air pipe is communicated with an air bag opening of the air bag body; the device is used for perfusion by applying the device for perfusion of the upper urothelial cancer. The beneficial effects are as follows: realizes the perfusion treatment of the upper urinary tract (including the renal pelvis and the ureter), and improves the treatment effect and efficiency.

Description

Liquid injection pipe, air bag, device and using method for upper urothelial cancer perfusion

Technical Field

The invention relates to the technical field of medical equipment and use, in particular to a liquid injection pipe, an air bag, a device and a use method for upper urothelial cancer perfusion.

Background

Urothelial cancer is a common tumor of the urinary system and can be divided into: renal pelvis cancer, ureteral cancer and bladder cancer, the bladder cancer perfusion treatment is a standard treatment after the operation aiming at non-muscle invasive bladder cancer at present, the postoperative recurrence rate of the bladder cancer can be effectively reduced, and meanwhile, patients with low-risk bladder cancer who cannot tolerate the operation can also benefit from the bladder perfusion treatment. More and more operators concentrate on the focal treatment of the upper urothelial cancer, and effective perfusion treatment after the focal treatment can also reduce the tumor recurrence, but no effective perfusion mode exists for the upper urothelial cancer (including renal pelvis cancer and ureteral cancer), which is one of important factors for limiting the focal treatment operation of the upper urothelial cancer. At present, no relevant device can be used for perfusion treatment of the upper urinary tract epithelial cancer, and the perfusion treatment after the upper urinary tract epithelial cancer is severely limited.

Disclosure of Invention

The invention aims to solve the technical problem that the upper urinary tract is difficult to be perfused and treated, and aims to provide a perfusion tube, a fixed air bag, a device and a using method for upper urothelial cancer perfusion, so that the upper urinary tract is perfused and treated, and the treatment effect is improved.

The invention is realized by the following technical scheme:

the utility model provides an upper urinary tract epithelium cancer is perfused with annotating liquid pipe, is including annotating liquid pipe body, the tube head of annotating liquid pipe body is confined arc cecum, the lower extreme of arc cecum is equipped with a plurality of liquid holes, a plurality of liquid hole interval distribution are in the lower extreme of arc cecum.

Set up to confined arc cecum through the tube head that will annotate liquid pipe body, avoided annotating liquid pipe body and caused the damage to ureter at last in-process of wearing, then set up a plurality of liquid holes with the lower extreme of arc cecum for liquid hole has been located the side of annotating liquid pipe body, makes the perfusate annotate the liquid from the side of annotating liquid pipe body and pours into.

Further, an upper urinary tract epithelium cancer is perfused with annotating liquid pipe, the lower extreme of arc cecum is equipped with a plurality of arcwall face depressed parts, any one goes out the liquid hole in a plurality of liquid holes and is located any one arcwall face depressed part department for the exit part in going out the liquid hole is sunken in the surface of annotating the liquid pipe body.

Through setting up the arcwall face depressed part, will go out the liquid hole and set up in arcwall face depressed part department for go out the exit portion of liquid hole and cave in the surface of annotating the liquid pipe body. And then avoided the ureter inner wall to the jam of going out the liquid hole for the perfusate flows out the liquid outlet drill way, can flow down along the arcwall face of arcwall face depressed part, and the entering of the perfusate has been guaranteed to a great extent in the ureter.

An air bag for perfusion of upper urothelial cancer comprises an air bag body, wherein the air bag body is provided with an air bag opening and two lantern ring holes, and the circumferential surface of each lantern ring hole is surrounded by an air bag cavity of the air bag body; any one of the two annular ring holes is matched with the liquid injection pipe body.

The air bag body is provided with the two annular ring holes for fixing the nested liquid injection pipe body, so that the circumferential surface of a certain part of the liquid injection pipe body is surrounded by the air bag cavity of the air bag body, and the sealing property between the liquid injection pipe body and the ureter is ensured.

Furthermore, the gasbag is used in upper urinary tract epithelial cancer perfusion, gasbag body lateral surface middle part is equipped with the imbibition ring layer around the lateral surface round, imbibition ring layer is sunken in the lateral surface of gasbag body for imbibition in the urinary tract, increase the leakproofness of gasbag body and ureter inner wall.

The liquid absorption ring layer is arranged at the middle part of the outer side surface of the air bag body and surrounds the outer side surface by a circle, the liquid absorption ring layer can be a ring layer made of absorbent cotton, and the liquid absorption ring layer is sunken on the outer side surface of the air bag body, so that the liquid absorption ring layer is shielded and not exposed in an uninflated state in the air bag body, and the air bag body is conveniently arranged in a ureter; after the air bag body is inflated and expanded, the liquid absorption ring layer is exposed and contacts with the wall of the ureter to seal, so that liquid on the upper part is not easy to flow down.

A device for perfusion of upper urothelial cancer comprises the liquid injection pipe body, the air sac body, a liquid discharge pipe and an air pipe; the pipe head of the liquid discharge pipe is a closed arc-shaped blind end, and the lower part of the arc-shaped blind end is provided with a plurality of liquid discharge ports; a nested liquid injection pipe body is fixed in one lantern ring hole of the air bag body, and a nested liquid discharge pipe is fixed in the other lantern ring hole; the length of the pipe head of the liquid injection pipe body penetrating through the annular ring hole is greater than the length of the pipe head of the liquid discharge pipe penetrating through the annular ring hole, and a plurality of liquid outlet holes of the liquid injection pipe body are positioned at the upper parts of a plurality of liquid discharge ports of the liquid discharge pipe; the air pipe is communicated with an air bag opening of the air bag body.

Through the structural design, the problem that the straight liquid injection pipe body is easy to pull out after being injected into the ureter is solved, and the straight liquid injection pipe body is fixed inside the ureter by adopting the air bag body; meanwhile, the liquid injection pipe body and the liquid discharge pipe are configured in a high-low mode, namely, the medicine firstly reaches the renal pelvis, then is downwards reserved above the air bag body, the cavity of the urinary system is filled, and then is led out through the liquid discharge pipe, so that the renal pelvis ureter is kept full of the injected medicine, and a better injection effect is achieved.

Further, the device for upper urinary tract epithelial cancer perfusion further comprises a guide wire, wherein the guide wire is matched with the liquid injection pipe body and is used for penetrating into the liquid injection pipe body and guiding the liquid injection pipe body into a urethra.

The guide wire is adopted, so that the liquid injection pipe body can be conveniently guided into the urethra.

Furthermore, the device for perfusion of the upper urothelial cancer also comprises a liquid injection joint and a liquid drainage joint; one end of the liquid injection joint is communicated with the liquid injection pipe body, and the other end of the liquid injection joint is communicated with the chemotherapy drug infusion device; one end of the drainage connector is communicated with the drainage pipe, and the other end of the drainage connector is communicated with the drainage bag.

Through the design that increases notes liquid splice box flowing back and connect, be convenient for be connected notes liquid pipe body and fluid-discharge tube and corresponding device, improve convenience and the efficiency of using.

A method of using a device for perfusion of upper urothelial cancer, the above-mentioned device for perfusion of upper urothelial cancer comprising the steps of:

s1, calculating the distance between the focus position in the ureter and the outside of the body, and adjusting the length of the pipe head of the liquid injection pipe body and the length of the pipe head of the liquid discharge pipe penetrating through the annular sleeve hole according to the distance;

s2, placing the guide wire into the injection tube body in vitro; under the cystoscope, a plurality of liquid outlet holes of the liquid injection tube body are delivered to the focus part in the ureter by using guide wires, and the air bag body enters the ureter;

s3, communicating the trachea with the empty needle cylinder, inflating and expanding the air bag body through the trachea to complete the fixation of the device in the ureter, and then withdrawing the guide wire;

s4, observing whether each part of the device reaches the corresponding position of the ureter under color Doppler ultrasound or abdominal fluoroscopy;

s5, communicating the liquid injection joint with a chemotherapy drug infusion device; the liquid drainage joint is communicated with the drainage bag;

s6, injecting the chemotherapeutics into the renal pelvis and the ureter through the liquid outlet of the liquid injection tube body, and leading the chemotherapeutics out of the body through the liquid outlet of the liquid discharge tube to realize the perfusion treatment of the renal pelvis and the ureter;

s7, after the perfusion treatment is finished, releasing and removing air in the air sac body through the air pipe, collapsing the air sac body, and taking the air sac body, the liquid injection pipe body and the liquid discharge pipe out of the ureter.

In addition, in the using method of the device for perfusion of the upper urinary tract epithelial cancer, in the step S3, when the air sac body is inflated, the inflation of the air sac body is stopped when the air sac body is observed to be inflated to 2-3 ml through an ultrasonic instrument.

In step S7, the air in the balloon body is discharged and removed through the trachea, that is, the balloon body is sucked through the empty syringe to collapse the balloon body to the minimum state, and then the balloon body, the liquid injection tube body and the liquid discharge tube are taken out of the ureter.

By adopting the method, the device for perfusion of the upper urothelial cancer is utilized to carry out rapid perfusion treatment on the urinary system focus, and the treatment effect and efficiency are improved.

Compared with the prior art, the invention has the following advantages and beneficial effects: a liquid injection pipe, a fixed air bag, a device and a using method for the perfusion of the upper urinary tract epithelium cancer realize the perfusion treatment of the upper urinary tract and improve the treatment effect and the treatment efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic view of an assembly structure of a device for perfusion of upper urothelial cancer according to the present invention.

Fig. 2 is an exploded view of an apparatus for upper urothelial cancer perfusion in accordance with the present invention.

FIG. 3 is a schematic structural view of a liquid injection tube for upper urinary tract epithelial cancer perfusion according to the present invention.

Fig. 4 is a cross-sectional view of fig. 3.

Fig. 5 is a schematic structural view of an upper urinary tract epithelial cancer perfusion airbag according to the present invention.

Fig. 6 is a cross-sectional view of fig. 5.

Reference numbers and corresponding part names in the drawings:

1-liquid injection pipe body, 10-arc surface concave part, 11-arc blind end, 12-liquid outlet hole, 2-liquid discharge pipe,

3-an air bag body, 31-an air bag opening, 32-a lantern ring hole, 33-a liquid absorption ring layer,

4-trachea, 5-liquid injection joint, 6-liquid drainage joint and 7-guide wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

Examples

As shown in fig. 3 and 4, the liquid injection tube for upper urothelial cancer perfusion comprises a liquid injection tube body 1, wherein the tube head of the liquid injection tube body 1 is a closed arc-shaped blind end 11, a plurality of liquid outlet holes 12 are formed in the lower end of the arc-shaped blind end 11, and the liquid outlet holes 12 are distributed at the lower end of the arc-shaped blind end 11 at intervals.

When in use, the tube head of the liquid injection tube body 1 is inserted into the ureter, the damage to the ureter is avoided due to the arc-shaped blind end 11, and then the perfusate is subjected to perfusion treatment by entering the liquid outlet 12 into the urinary system.

In some embodiments, as shown in fig. 3 and 4, in the pouring spout for upper urothelial cancer perfusion, the lower end of the arc-shaped blind end 11 is provided with a plurality of arc-shaped surface depressions 10, and any one of the plurality of liquid outlet holes 12 is located at any one of the arc-shaped surface depressions 10, so that the outlet part of the liquid outlet hole 12 is recessed in the outer surface of the pouring spout body 1. As preferred embodiment, through setting up arcwall face depressed part 10, will go out liquid hole 12 and set up in arcwall face depressed part 10 department for go out the export portion of liquid hole 12 and cave in the surface of annotating liquid pipe body 1, avoided the ureter wall to the barrier of the perfusate that comes out from liquid hole 12, the perfusate can flow down along the arcwall face of arcwall face depressed part 10, makes the process of pouring more unobstructed.

As shown in fig. 5 and 6, the perfusion balloon for the upper urinary tract epithelial cancer comprises a balloon body 3, wherein the balloon body 3 is provided with a balloon opening 31 and two collar holes 32, and the circumferential surface of each collar hole 32 is surrounded by a balloon cavity of the balloon body 3; any one of the two collar holes 32 is matched with the injection pipe body 1.

During the use, be used for nestification in annotating liquid pipe body 1, with its nestification in lantern ring hole 32, make like this annotate the gasbag chamber of being surrounded by gasbag body 3 around annotating the partial periphery of side of liquid pipe body 1 for annotate the outer peripheral face of liquid pipe body 1 and produced the arch, carry out the blockking to the perfusate.

In some embodiments, as shown in fig. 5 and 6, in the balloon for perfusion of the upper urothelial cancer, a liquid absorbing ring layer 33 is arranged around the middle of the outer side surface of the balloon body 3, and the liquid absorbing ring layer 33 is recessed in the outer side surface of the balloon body 3 for absorbing liquid in the urinary tract and increasing the sealing performance between the balloon body 3 and the inner wall of the ureter. In a preferred embodiment, the liquid-absorbing ring layer 33 can be made of absorbent cotton, and when the air bag body 3 is filled with air or is short of air, the liquid-absorbing ring layer is recessed on the outer side surface of the air bag body 3, so that the air bag body 3 can be conveniently placed in the ureter; when the air bag body 3 is filled with air, the liquid absorption ring layer 33 is extended and exposed to be directly contacted with the wall of the ureter, so that the upper perfusion liquid flows through the liquid absorption ring layer and is blocked, and the sealing property is further improved.

As shown in figures 1 and 2, the perfusion device for the upper urinary tract epithelial cancer comprises the perfusion tube body 1, the air sac body 3, the liquid discharge tube 2 and the air tube 4; the pipe head of the liquid discharge pipe 2 is a closed arc-shaped blind end, and the lower part of the arc-shaped blind end is provided with a plurality of liquid discharge ports; one of the lantern ring holes 32 of the air bag body 3 is internally fixed with the liquid injection pipe body 1 in a nested way, and the other lantern ring hole 32 is internally fixed with the liquid discharge pipe 2 in a nested way; the length of the pipe head of the liquid injection pipe body 1 penetrating through the annular sleeve hole 32 is longer than the length of the pipe head of the liquid discharge pipe 2 penetrating through the annular sleeve hole 32, and the liquid outlet holes 12 of the liquid injection pipe body 1 are positioned at the upper parts of the liquid discharge ports of the liquid discharge pipe 2; the air tube 4 communicates with the balloon port 31 of the balloon body 3.

When in use, the liquid injection tube body 1 of the device is used for injecting the medicine, then the medicine flows down to the air bag body 3 to be blocked, the medicine is filled in the cavity of the urinary system, and then the medicine is discharged through the liquid discharge tube 2 under the action of pressure.

In some embodiments, as shown in fig. 1 and 2, the device for perfusion of the upper urothelial cancer further comprises a guide wire 7, wherein the guide wire 7 is matched with the perfusion tube body 1 and is used for penetrating into the perfusion tube body 1 and guiding the perfusion tube body 1 into the urethra. In a preferred embodiment, the infusion tube body 1 is introduced into the ureter by the guide wire 7, so that the convenience and efficiency of introduction are further improved.

In some embodiments, as shown in fig. 1 and 2, the device for perfusion of the upper urothelial cancer further comprises a liquid injection joint 5 and a liquid discharge joint 6; one end of the liquid injection joint 5 is communicated with the liquid injection pipe body 1, and the other end is communicated with a chemotherapy drug infusion device; one end of the drainage joint 6 is communicated with the drainage pipe 2, and the other end is communicated with the drainage bag. In a preferred embodiment, the liquid injection joint 5 and the liquid discharge joint 6 are additionally designed to facilitate the communication between the liquid injection pipe body 1 and the liquid discharge pipe 2 and the corresponding devices.

The use method of the device for perfusion of the upper urothelial cancer comprises the following steps of:

s1, calculating the distance between the focus position in the ureter and the outside of the body, and adjusting the length of the tube head of the liquid injection tube body 1 penetrating through the annular sleeve hole 32 and the length of the tube head of the liquid discharge tube 2 penetrating through the annular sleeve hole 32 according to the distance;

s2, placing the guide wire 7 into the injection tube body 1 outside the body; under the cystoscope, a plurality of liquid outlet holes 12 of the liquid injection tube body 1 are delivered to the focus part in the ureter by using the guide wire 7, and the air bag body 3 enters the ureter;

s3, communicating the trachea 4 with the empty needle cylinder, inflating and expanding the air bag body 3 through the trachea 4 to complete the fixation of the device in the ureter, and then withdrawing the guide wire 7;

s5, communicating the liquid injection joint 5 with a chemotherapy drug infusion device; the liquid drainage connector 6 is communicated with the drainage bag;

s6, the chemotherapy drugs are infused into the renal pelvis and the ureter through the liquid outlet hole 12 of the infusion tube body 1, and the drugs are led out of the body through the liquid outlet of the liquid outlet tube 2, so that the perfusion treatment of the renal pelvis and the ureter is realized;

s7, after the perfusion treatment is finished, releasing and exhausting air in the air sac body 3 through the air pipe 4, collapsing the air sac body 3, and taking the air sac body 3, the liquid injection pipe body 1 and the liquid discharge pipe 2 out of the ureter.

Preferably, in the method for using the device for perfusion of the upper urothelial cancer, in the step S3, when the balloon body 3 is inflated, the inflation is stopped when the balloon body 3 is observed to be inflated to 2 to 3ml by an ultrasonic instrument.

In a preferred method of using the apparatus for perfusion of upper urothelial cancer, in step S7, the air in the balloon body 3 is discharged through the air tube 4, that is, the balloon body 3 is sucked through the empty syringe to collapse the balloon body 3 to the minimum state, and then the balloon body 3, the liquid injection tube body 1 and the liquid discharge tube 2 are taken out of the ureter.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an upper urinary tract epithelium cancer is perfused with annotating liquid pipe, is including annotating liquid pipe body (1), its characterized in that, the tube head of annotating liquid pipe body (1) is confined arc cecum (11), the lower extreme of arc cecum (11) is equipped with a plurality of liquid holes (12), a plurality of liquid hole (12) interval distribution are in the lower extreme of arc cecum (11).

2. The infusion tube for upper urothelial cancer perfusion according to claim 1, characterized in that the lower end of the curved blind end (11) is provided with a plurality of curved surface depressions (10), and any one of the plurality of liquid outlet holes (12) is located at any one of the curved surface depressions (10), so that the outlet part of the liquid outlet hole (12) is recessed in the outer surface of the infusion tube body (1).

3. The air bag for perfusion of the upper urothelial cancer comprises an air bag body (3), wherein the air bag body (3) is provided with an air bag opening (31), and is characterized by further comprising two lantern ring holes (32), and the circumferential surface of each lantern ring hole (32) is surrounded by an air bag cavity of the air bag body (3); any one of the two collar holes (32) is matched with the liquid injection pipe body (1) in claim 1 or 2.

4. The perfusion balloon for the upper urothelial cancer as claimed in claim 3, wherein a liquid absorbing ring layer (33) is arranged around the outer side surface of the balloon body (3) in the middle of the outer side surface, and the liquid absorbing ring layer (33) is sunken in the outer side surface of the balloon body (3) and is used for absorbing liquid in the urinary tract and increasing the sealing performance of the balloon body (3) and the inner wall of the ureter.

5. A device for perfusion of upper urothelial cancer, characterized by comprising a perfusion tube body (1) according to claim 2, an air bag body (3) according to claim 4, a drainage tube (2) and a trachea (4); the pipe head of the liquid discharge pipe (2) is a closed arc-shaped blind end, and the lower part of the arc-shaped blind end is provided with a plurality of liquid discharge ports; one of the lantern ring holes (32) of the air bag body (3) is internally fixed with a nested liquid injection pipe body (1), and the other lantern ring hole (32) is internally fixed with a nested liquid discharge pipe (2); the length of the pipe head of the liquid injection pipe body (1) penetrating through the annular sleeve hole (32) is greater than the length of the pipe head of the liquid discharge pipe (2) penetrating through the annular sleeve hole (32), and the liquid outlet holes (12) of the liquid injection pipe body (1) are positioned at the upper parts of the liquid discharge ports of the liquid discharge pipe (2); the air pipe (4) is communicated with an air bag port (31) of the air bag body (3).

6. The device for perfusion of the upper urinary tract epithelial cancer according to claim 5, further comprising a guide wire (7), wherein the guide wire (7) is matched with the perfusion tube body (1) and is used for penetrating into the perfusion tube body (1) and guiding the perfusion tube body (1) into the urethra.

7. The device for perfusion of the upper urinary tract epithelial cancer according to claim 6, further comprising a liquid injection joint (5) and a liquid discharge joint (6); one end of the liquid injection joint (5) is communicated with the liquid injection pipe body (1), and the other end of the liquid injection joint is communicated with a chemotherapy drug infusion apparatus device; one end of the drainage joint (6) is communicated with the drainage pipe (2), and the other end is communicated with the drainage bag.

8. A method of using the device for upper urothelial cancer perfusion of claim 7, wherein the steps of applying the device for upper urothelial cancer perfusion are as follows:

s1, calculating the distance between the focus position in the ureter and the outside of the body, and adjusting the length of the pipe head of the liquid injection pipe body (1) penetrating through the annular sleeve hole (32) and the length of the pipe head of the liquid discharge pipe (2) penetrating through the annular sleeve hole (32) according to the distance;

s2, placing the guide wire (7) into the injection tube body (1) in vitro; under the cystoscope, a plurality of liquid outlet holes (12) of the liquid injection tube body (1) are delivered to the focus part in the ureter by using a guide wire (7), and the air bag body (3) enters the ureter;

s3, communicating the trachea (4) with the empty needle cylinder, inflating and expanding the air bag body (3) through the trachea (4) to complete the fixation of the device in the ureter, and then withdrawing the guide wire (7);

s5, communicating the liquid injection joint (5) with a chemotherapy drug infusion device; the liquid drainage connector (6) is communicated with the drainage bag;

s6, the chemotherapy drugs are infused into the renal pelvis and the ureter through the liquid outlet (12) of the liquid injection tube body (1), and the drugs are led out of the body through the liquid outlet of the liquid discharge tube (2) to realize the infusion treatment of the upper urinary tract;

s7, after the perfusion treatment is finished, releasing and removing air in the air sac body (3) through the air pipe (4), collapsing the air sac body (3), and taking the air sac body (3), the liquid injection pipe body (1) and the liquid discharge pipe (2) out of the ureter.

9. The use method of the device for perfusion of the upper urinary tract epithelial cancer according to claim 8, wherein in the step S3, when the balloon body (3) is inflated, the inflation is stopped when the balloon body (3) is observed to be inflated to 2-3 ml by an ultrasonic instrument.

10. The method for using a device for perfusion of upper urinary tract epithelial cancer according to claim 9, wherein in step S7, the air in the balloon body (3) is released and removed through the air pipe (4), that is, the balloon body (3) is sucked through an empty syringe, the balloon body (3) is collapsed to the minimum state, and then the balloon body (3), the liquid injection tube body (1) and the liquid discharge tube (2) are taken out of the ureter.