CN113713236A

CN113713236A - Ureter rapid liquid-gas expansion pipeline kit and use method thereof

Info

Publication number: CN113713236A
Application number: CN202111025352.9A
Authority: CN
Inventors: 李强; 陈汉威; 黄国标; 邹戈; 姚伟祥
Original assignee: Cardiovascular Disease Institute of Guangzhou Panyu Central Hospital
Current assignee: Cardiovascular Disease Institute of Guangzhou Panyu Central Hospital
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2021-11-30

Abstract

The invention relates to a ureteral quick liquid-gas expansion pipeline kit and a using method thereof. According to the invention, the ureter is pre-expanded through the first ureter catheter, and the first ureter catheter is not suitable for being left in the ureter for a long time due to the fact that a renal pelvis drainage channel is removed, otherwise, the problem of increase of pressure in a kidney at the working side can occur, so that the first ureter catheter is only prepared for short-time expansion, the ureter is subjected to preliminary expansion, after the diameter of the ureter is increased, the second ureter catheter can be conveniently placed into the first ureter catheter for long-time expansion, the expansion time is several hours or ten hours or more, the expansion effect and safety of the ureter are greatly improved, the placement success rate of the second ureter catheter is improved, the operation success rate of a flexible ureteroscope is further increased, the process requirement and price of the flexible ureteroscope are reduced, the performance of the flexible ureteroscope is improved, the diameter of a water flow channel is increased, and the safety and effect of the flexible ureteroscope are rapidly improved.

Description

Ureter rapid liquid-gas expansion pipeline kit and use method thereof

Technical Field

The invention relates to the technical field of ureter soft lens operation treatment, in particular to a ureter rapid liquid-gas expansion pipeline kit and a using method thereof.

Background

Compared with a ureter hard lens, the ureter soft lens has a bendable function, can treat ureteral calculus which goes up to a kidney along a ureter in a calculus crushing process, and ureter upper segment calculus, and is more and more subjected to ureter soft lens operation treatment. The percutaneous nephrolithotomy is the absolute mainstream of nephrolithotomy in kidney stones with indications of surgical lithotomy for a long time before the development of ureter soft lens technology and technology. Compared with the percutaneous nephroscope lithotripsy, the ureter soft-lens lithotripsy does not need renal puncture, so the risk of renal hemorrhage caused by puncture expansion and pulling the lens body during lithotripsy is avoided. With the promotion of the technology of the ureter soft lens and the popularization of the technology, more and more kidney stones and ureter upper segment stones which are not loaded too much and have operation indication are treated by the ureter soft lens in recent years. The percutaneous nephrolithotomy combined with the ureter soft lens is also a research hotspot. For kidney stones with high hardness and unsuccessful extracorporeal shock wave lithotripsy, ureteroscopy became the first choice.

Although the ureter soft lens lithotripsy has a plurality of advantages compared with ureter hard lens lithotripsy and percutaneous nephroscope lithotripsy, the ureter soft lens lithotripsy also has limitations, wherein important points are that: the inner diameter of the ureter lumen is relatively small, limiting the outer diameter of the soft lens and the diameter of the operating (water flow) channel. The consequence is: 1) in the first stage of the ureter soft lens lithotripsy, the ureter soft lens sheath cannot be successfully placed into a relatively narrow ureter cavity, and the ureter soft lens sheath cannot be placed into the ureter soft lens sheath, so that the soft lens lithotripsy operation cannot be completed directly. Even if the units and experts with abundant operation experience break the ureter soft lens at the first stage, the failure rate of the tube placement is about 10 percent or even higher. 2) The narrow inner diameter of the ureter improves the process requirement of the flexible ureteroscope, so that the flexible ureteroscope is high in price and easy to damage, the cost of the technology is increased as a direct result, and the development of the technology is limited. 3) The flexible ureteroscope operation channel is narrow and small, and the passageway is occupied by rubble optic fibre in the rubble process, and various consequences that the rivers play unsmooth and lead to: kidney damage caused by increased pressure, retrograde infection, accidental injury caused by unclear visual field, reduced lithotripsy efficiency, prolonged operation time, limited total operation time and the like. The method is adopted at present, but the operation needs 2 times of operations, and the interval time between the two operations is about one week or even longer. The ureter internal bracket is carried, which has obvious influence on the life quality of patients: discomfort in the waist, hematuria, frequent urination, lumbago during urination, etc. Therefore, a plurality of units and experts with rich operation experience of the ureter soft lens refuse to place the internal support before the ureter soft lens lithotripsy. In any case, the effect of placing the ureteral stent in advance to expand the ureter is relatively limited. Whether a bracket is placed in a ureter for expansion before the ureter soft lens lithotripsy operation or not is an ongoing topic in the urinary academia in recent years.

In fact, ureters are flexible, water-expandable muscular tubes with a greater passive expansion capacity, which can be understood from the anatomy of the ureter. Compared with the mechanical force expansion of the ureter, water and gas expand the ureter with softer and more uniform force. As a urologist, expansion of the ureter by water, increase of the internal diameter is very easy to understand: when ureteral calculus obstructs ureter, the part above obstruction plane of kidney and ureter is expanded by urine to different extent, even the diameter of ureter inner diameter exceeds 20 mm. Moreover, this expansion is mostly reversible, without significant impairment of the ureteral anatomy and function: after the acute ureteral obstruction is relieved for a period of time, B-ultrasonic examination or radiography examination is carried out again, the ureter which is expanded originally is not expanded any more, the renal effusion disappears, and the renal function is recovered to be normal. However, we can understand from the following experience: at the initial stage of relieving the acute ureteral obstruction, the ureter still keeps an expanded state: patients with ureteral calculus and renal colic receive ureteroscope calculus, only one spacious ureter is found, no ureteral calculus is found, and the calculus is discharged. When the calculus is discharged, a spacious ureter can still be obtained.

The Panyu central hospital Liqiang physician filed an invention patent application of 'a double-balloon catheter kit for ureter expansion' (application number: 201810563731.5) to the national patent office on 6/4/2018, which is currently in the stage of substantial examination. This patent discloses the use of fluid or gas pressure to dilate the ureter with a mild and controlled measurable amount of force, with no trauma and bleeding. After the ureter is expanded by the tool and the method, a thicker soft lens sheath can be conveniently and safely placed, so that the operation success rate of the ureter soft lens is increased, the process requirement and the price of the ureter soft lens are reduced, the performance of the ureter soft lens is improved, the diameter of a water flow channel is increased, and the safety and the effect of the ureter soft lens are quickly improved.

However, the device is a double-balloon four-channel device, the structure is complicated, the design and manufacturing process of the device can be increased, and the problem of low success rate of inserting the external member into the ureter caused by over-thick diameter can also occur. Therefore, it is desirable to provide a ureteral quick liquid-gas expansion conduit set and a use method thereof to solve the above problems.

Disclosure of Invention

Based on this, the invention aims to overcome the defects and shortcomings in the prior art and provide a ureter quick liquid-gas expansion pipeline kit and a use method thereof.

The invention provides a ureter rapid liquid-gas expansion pipeline kit, which comprises a first ureter catheter and a second ureter catheter;

one end of the first ureteral catheter is provided with a first balloon, and one side, far away from the first balloon, of the first ureteral catheter is provided with a second balloon; a first channel, a second channel and a third channel are sequentially arranged at one end, away from the first balloon, of the first ureteral catheter, the first channel is communicated with the first balloon, the second channel is communicated with the second balloon, a first opening is arranged on the side face of the ureteral catheter, the first opening is located between the first balloon and the second balloon, and the first opening is communicated with the third channel; the first channel coincides with the first ureteral catheter;

a tip drainage channel opening is formed in one end of the second ureteral catheter, a third balloon is arranged on one side, close to the tip drainage channel opening, of the second ureteral catheter, a fourth balloon is arranged on one side, far away from the third balloon, of the second ureteral catheter, a fourth channel, a fifth channel, a sixth channel and a seventh channel are sequentially arranged at one end, far away from the tip drainage channel opening, of the second ureteral catheter, the fourth channel is communicated with the tip drainage channel opening, the fifth channel is communicated with the third balloon, the sixth channel is communicated with the fourth balloon, a second opening is formed in one side of the second ureteral catheter, and the second opening is communicated with the seventh channel; the diameter of the first ureteral catheter is less than the diameter of the second ureteral catheter; the fourth channel coincides with the second ureteral catheter.

Further, the diameter of the first ureteral catheter tube body is 6Fr-12 Fr; the diameter of the second ureteral catheter body is 8Fr-12 Fr.

Further, the diameters of the second channel and the third channel are 1.8Fr-4 Fr; the diameters of the fifth channel, the sixth channel and the seventh channel are 2.5Fr-4 Fr.

Further, the cross section of the first channel, the second channel, the third channel, the fourth channel, the fifth channel, the sixth channel and the seventh channel is circular.

Furthermore, annular convex parts are arranged on the peripheral sides of the first balloon, the second balloon, the third balloon and the fourth balloon; the annular bulge part is communicated with the corresponding balloon I or balloon II or balloon III or balloon IV; when the first sacculus, the second sacculus, the third sacculus and the fourth sacculus are not expanded, the annular convex part and the surfaces of the first sacculus, the second sacculus, the third sacculus or the fourth sacculus are combined into a smooth surface.

Further, the axial direction of the annular convex portion is parallel to the axial direction of the corresponding first ureteral catheter or second ureteral catheter.

Further, the tip drainage channel opening is conical.

Further, a constant pressure water supplement device or a constant pressure air supplement device is also included; and the constant-pressure water supplementing device or the constant-pressure air supplementing device is connected with the third channel or the seventh channel.

The use method of the ureter rapid liquid-gas expansion pipeline kit provided by the invention utilizes the ureter rapid liquid-gas expansion pipeline kit to expand the ureter, and comprises the following steps:

the method comprises the following steps: firstly, a first ureteral catheter is placed into the lower section of a ureter through a urinary bladder along a urethra, liquid or gas filling is carried out on a first balloon and a second balloon by utilizing a first channel and a second channel, the ureter part between the first balloon and the second balloon is plugged by the first balloon and the second balloon after expansion, liquid or gas is injected into a ureteral cavity gap between the two balloons through a third channel and a first opening, the plugged part of the ureter is pre-expanded, the pre-expansion time lasts for 1-2 minutes, then liquid or gas in the plugged parts of the first balloon, the second balloon and the ureter is released, and the first ureteral catheter is taken out;

step two: the second ureteral catheter is placed into the ureter through the urinary bladder along the urethra, liquid or gas is filled into the third balloon and the fourth balloon by using the fifth channel and the sixth channel, the ureter part between the third balloon and the fourth balloon is sealed by the expanded third balloon and the expanded fourth balloon, liquid or gas is injected into the ureteral cavity gap between the two balloons through the seventh channel and the second opening, the sealed part of the ureter is expanded, and the expansion time lasts for a plurality of hours; in the expansion process, urine generated in the kidney flows out of the body through the tip drainage channel opening and the fourth channel at any time, so that the pressure in the kidney is prevented from increasing.

When liquid or gas is injected into the third channel or the seventh channel, a constant-pressure water supplementing device or a constant-pressure gas supplementing device can be connected to the third channel or the seventh channel, so that the pressure of the blocked ureter is directly measured, and the amount of the liquid and the gas injected into the third channel or the seventh channel is regulated and controlled accordingly.

Compared with the prior art, the invention has the following beneficial effects:

(1) the ureter is pre-expanded through the first ureter catheter, the first ureter catheter is only prepared for short-time expansion to preliminarily expand the ureter because the first ureter catheter is not suitable for being left in the ureter for a long time due to the fact that a renal pelvis drainage channel is removed, otherwise, the problem that the pressure in a kidney at the working side is increased occurs, the first ureter catheter can be conveniently placed into the second ureter catheter for long-time expansion after the diameter of the ureter is increased, the expansion time is several hours or ten hours or more, the expansion effect and the safety of the ureter are greatly improved, the placement success rate of the second ureter catheter is improved, the operation success rate of the ureter soft endoscope is further increased, the technological requirements and the price of the ureter soft endoscope are reduced, the performance of the ureter soft endoscope is improved, the diameter of a water flow channel is increased, the intra-renal perfusion pressure is reduced, the visual field is improved, and larger stones can be conveniently sleeved and taken by a stone basket, the safety and the effect of the ureter soft lens are obviously improved;

(2) the pressure of the blocked ureter can be directly measured by arranging a constant-pressure water supplementing device or a constant-pressure air supplementing device to be connected with the third channel or the seventh channel, so that the liquid and gas injected into the third channel or the seventh channel can be manually or automatically regulated and controlled to reach the set pressure, and the ureter is ensured to be expanded to a proper diameter;

(3) through setting up cyclic annular bellying, make to correspond the sacculus inflation back, usable cyclic annular bellying laminates with the inner wall of ureter completely, acts as the effect of sealing washer, improves its leakproofness, avoids in the ureter of being blocked up injecting air or liquid process, liquid or air infiltration outside the ureter.

For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic, diagrammatic, structural view of a first ureteral catheter of a first embodiment;

fig. 2 is a schematic cross-sectional view of a first ureteral catheter of a first embodiment;

fig. 3 is a schematic, diagrammatic, structural view of a second ureteral catheter of a first embodiment;

fig. 4 is a schematic cross-sectional view of a second ureteral catheter of example one;

fig. 5 is a schematic, diagrammatic, structural view of a primary ureteral catheter of a second embodiment;

fig. 6 is a schematic diagram of the structure of a second ureteral catheter of a second embodiment.

In the figure: 10. a first ureteral catheter; 11. a first channel; 12. a second channel; 13. a third channel; 14. a first opening; 15. a first balloon; 16. a second balloon; 20. a second ureteral catheter; 21. a sharp end drainage port; 22. a fourth channel; 23. A fifth channel; 24. a sixth channel; 25. a seventh channel; 26. a second opening; 27. a third balloon; 28. a fourth balloon; 30. a constant pressure water replenishing device; 40. an annular protrusion.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.

It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "hollow" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The first embodiment is as follows:

referring to fig. 1 to 4, the ureteral quick liquid-gas expansion conduit set of the present embodiment includes a first ureteral catheter 10, a second ureteral catheter 20, and a constant pressure water supplement device 30;

one end of the first ureteral catheter 10 is provided with a first balloon 15, and one side, away from the first balloon 15, of the first ureteral catheter 10 is provided with a second balloon 16; a first channel 11, a second channel 12 and a third channel 13 are sequentially arranged at one end, away from the first balloon 15, of the first ureteral catheter 10, the first channel 11 is communicated with the first balloon 15, the second channel 12 is communicated with the second balloon 16, a first opening 14 is arranged on the side surface of the ureteral catheter, the first opening 14 is located between the first balloon 15 and the second balloon 16, and the first opening 14 is communicated with the third channel 13; the first channel 11 coincides with the first ureteral catheter 10;

a tip drainage port 21 is arranged at one end of the second ureteral catheter 20, a third balloon 27 is arranged at one side, close to the tip drainage port 21, of the second ureteral catheter 20, a fourth balloon 28 is arranged at one side, far away from the third balloon 27, of the second ureteral catheter 20, a fourth channel 22, a fifth channel 23, a sixth channel 24 and a seventh channel 25 are sequentially arranged at one end, far away from the tip drainage port 21, of the second ureteral catheter 20, the fourth channel 22 is communicated with the tip drainage port 21, the fifth channel 23 is communicated with the third balloon 27, the sixth channel 24 is communicated with the fourth balloon 28, a second opening 26 is arranged at one side of the second ureteral catheter 20, and the second opening 26 is communicated with the seventh channel 25; the diameter of the first ureteral catheter 10 is smaller than the diameter of the second ureteral catheter 20; the fourth channel 22 coincides with the second ureteral catheter 20.

Specifically, the diameter of the first ureteral catheter body is 6Fr-12 Fr; the diameter of the second ureteral catheter body is 8Fr-12 Fr; in a preferred embodiment, the diameters of the tubular bodies of the first ureteral catheter 10 and the second ureteral catheter 20 are 6Fr and 12Fr, respectively;

specifically, the diameters of the second channel and the third channel are 1.8Fr-4 Fr; the diameters of the fifth channel, the sixth channel and the seventh channel are 2.5Fr-4 Fr; in a preferred embodiment, the diameter of the second channel and the third channel is 1.8Fr, and the diameter of the fifth channel, the sixth channel and the seventh channel is 2.5 Fr;

specifically, the cross sections of the first channel 11, the second channel 12, the third channel 13, the fourth channel 22, the fifth channel 23, the sixth channel 24 and the seventh channel 25 are all circular;

specifically, the tip flow guide opening 21 is conical;

specifically, a metal (not shown) which is opaque to X-rays is embedded on the first balloon 15, the second balloon 16, the third balloon 27 and the fourth balloon 28, so as to display the position of the balloons in the operation process;

in a preferred embodiment, the constant pressure water replenishing device 30 is a device capable of replenishing water at a constant pressure; the constant-pressure water supplementing device 30 is connected with the third channel 13 or the seventh channel 25; the constant-pressure water replenishing device 30 can preferably be an automatic water replenishing valve, and the automatic water replenishing valve can automatically replenish water to the third channel 13 or the seventh channel 25 according to a set pressure value so as to keep the water pressure in a constant-pressure state; the constant pressure water replenishing device can also be replaced by a constant pressure air replenishing device, and the constant pressure air replenishing device is a device capable of replenishing gas at constant pressure, belongs to the prior art and is not described herein in detail.

The use method of the ureter rapid liquid-gas expansion pipeline kit comprises the following steps:

the method comprises the following steps: an operation side guide wire is placed under a cystoscope, a first ureter catheter 10 is placed into the lower section of a ureter along the guide wire through a urinary bladder, a first balloon 15 and a second balloon 16 are filled with liquid or gas through a first channel 11 and a second channel 12, the expanded first balloon 15 and the second balloon 16 block the ureter part between the first balloon and the second balloon, liquid or gas is injected into a ureter cavity gap between the two balloons through a third channel 13 and a first opening 14, the blocking part of the ureter is pre-expanded, the pre-expansion time lasts for 1-2 minutes, then the liquid or gas in the first balloon 15, the second balloon 16 and the ureter blocking part is released, and the first ureter catheter 10 is taken out;

step two: an operation side guide wire is placed under a cystoscope, a second ureteral catheter 20 is further placed into a ureter along the guide wire through a urinary bladder, liquid or gas is filled into a third balloon 27 and a fourth balloon 28 through a fifth channel 23 and a sixth channel 24, the third balloon 27 and the fourth balloon 28 after being inflated seal the ureter part between the third balloon and the fourth balloon, liquid or gas is injected into a ureteral cavity gap between the two balloons through a seventh channel 25 and a second opening 26, the sealed part of the ureter is expanded, and the expansion time lasts for a plurality of hours; during the expansion process, urine generated in the kidney flows out of the body through the tip drainage port 21 and the fourth passage 22 at any time, so that the pressure in the kidney is prevented from increasing.

When liquid or gas is injected into the third channel 13 or the seventh channel 25, the constant-pressure water replenishing device 30 can be connected to the third channel 13 or the seventh channel 25, so that the pressure of the blocked ureter can be directly measured, the constant-pressure water replenishing device 30 can automatically regulate and control the liquid injected into the third channel 13 or the seventh channel 25 according to the preset pressure, and the ureter can be ensured to be expanded to a proper diameter.

Example two:

referring to fig. 5 and 6, the ureteral quick liquid-gas expansion conduit set of the present embodiment is different from the present embodiment in that,

the circumferential sides of the first balloon 15, the second balloon 16, the third balloon 27 and the fourth balloon 28 are provided with annular convex parts 40; the annular convex part 40 is communicated with the corresponding balloon I15, the balloon II 16, the balloon III 27 or the balloon IV 28; when the first balloon 15, the second balloon 16, the third balloon 27 and the fourth balloon 28 are not expanded, the annular convex part 40 and the surfaces of the first balloon 15, the second balloon 16, the third balloon 27 or the fourth balloon 28 are combined into a smooth surface, so that the first balloon 15, the second balloon 16, the third balloon 27 or the fourth balloon 28 can enter a human body more smoothly;

specifically, the axial direction of the annular convex portion 40 is parallel to the axial direction of the corresponding first ureteral catheter 10 or second ureteral catheter 20.

When the first balloon 15, the second balloon 16, the third balloon 27 and the fourth balloon 28 are expanded in the ureter, the annular bulge 40 can be completely attached to the inner wall of the ureter to serve as a sealing ring, so that the sealing performance of the ureter is improved, and liquid or air is prevented from permeating into the ureter in the process of injecting air or liquid into the blocked ureter.

Compared with the prior art, the invention pre-expands the ureter through the first ureteral catheter, because the first ureteral catheter removes the renal pelvis drainage channel, which is not suitable for a longer time remaining in the ureters, otherwise problems arise with increased pressure in the working side kidneys, so that the first ureteral catheter is only ready for a short expansion, the ureter is primarily expanded, after the diameter of the ureter is increased, a second ureter catheter can be conveniently placed into the ureter for long-time expansion, the expansion time is several hours or ten hours or more, the expansion effect and safety of the ureter are greatly improved, the placement success rate of the second ureter catheter is improved, the operation success rate of a flexible ureteroscope is increased, the technological requirement and price of the flexible ureteroscope are reduced, the performance of the flexible ureteroscope is improved, the diameter of a water flow channel is increased, and the safety and the effect of the flexible ureteroscope are quickly improved.

The safety problem of the invention with the use of liquid gas to expand the ureters is briefly described as follows:

urologists are all aware of: when a calculus is blocked at the lower section of a ureter, urine generated by a kidney cannot flow out, the urine with certain pressure is gathered in the ureter and a kidney collecting system, and at the moment, the whole ureter, a renal pelvis and the kidney collecting system (a place for collecting and discharging the urine in the kidney) are expanded, so that the most obvious upper section of the ureter is expanded, but the lower section is also well expanded, but the upper section is well expanded, interrupted and slightly expanded or not expanded; or the bulging expansion of a certain ureter section and a certain ureter point;

the pressure of liquid used for dilating the ureter can be accurately controlled, and can be fixed at the intrarenal pressure when the kidney cannot discharge urine when the ureter is obstructed by stones, or can be set at about the pressure; rather than a rapid, uncontrolled total water injection, and the amount of pressure in the ureter that is measured when the water fills the ureter, and the diameter of the ureter at various locations.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. Ureter quick liquid gas expansion pipe external member, its characterized in that includes:

one end of the first ureteral catheter is provided with a first balloon, and one side, away from the first balloon, of the first ureteral catheter is provided with a second balloon; a first channel, a second channel and a third channel are sequentially arranged at one end, away from the first balloon, of the first ureteral catheter, the first channel is communicated with the first balloon, the second channel is communicated with the second balloon, a first opening is arranged on the side face of the ureteral catheter, the first opening is located between the first balloon and the second balloon, and the first opening is communicated with the third channel; the first channel coincides with the first ureteral catheter;

a tip drainage port is arranged at one end of the second ureteral catheter, a third balloon is arranged at one side, close to the tip drainage port, of the second ureteral catheter, a fourth balloon is arranged at one side, far away from the third balloon, of the second ureteral catheter, a fourth channel, a fifth channel, a sixth channel and a seventh channel are sequentially arranged at one end, far away from the tip drainage port, of the second ureteral catheter, the fourth channel is communicated with the tip drainage port, the fifth channel is communicated with the third balloon, the sixth channel is communicated with the fourth balloon, a second opening is arranged at one side of the second ureteral catheter, and the second opening is communicated with the seventh channel; the diameter of the first ureteral catheter is less than the diameter of the second ureteral catheter; the fourth channel coincides with the second ureteral catheter.

2. The ureteral rapid liquid-gas dilatation catheter kit of claim 1, wherein the first ureteral catheter tube diameter is 6Fr-12 Fr; the diameter of the second ureteral catheter body is 8Fr-12 Fr.

3. The ureteral rapid liquid-gas dilatation catheter kit according to claim 1, wherein the diameter of the second and third channels is 1.8Fr-4 Fr; the diameters of the fifth channel, the sixth channel and the seventh channel are 2.5Fr-4 Fr.

4. The ureteral rapid liquid-gas dilation tubing set according to claim 1, wherein the first, second, third, fourth, fifth, sixth and seventh channels are circular in cross-section.

5. The ureteral quick liquid-gas expansion conduit kit according to claim 1, wherein annular protrusions are arranged on the peripheral sides of the first balloon, the second balloon, the third balloon and the fourth balloon; the annular bulge part is communicated with the corresponding balloon I or balloon II or balloon III or balloon IV; when the first sacculus, the second sacculus, the third sacculus and the fourth sacculus are not expanded, the annular convex part and the surfaces of the first sacculus, the second sacculus, the third sacculus or the fourth sacculus are combined into a smooth surface.

6. The ureteral rapid liquid-gas dilatation catheter kit according to claim 5, wherein the axial direction of the annular protrusion is parallel to the axial direction of the corresponding first ureteral catheter or second ureteral catheter.

7. The ureteral rapid liquid-gas dilation tubing set of claim 1, wherein the tip drainage orifice is conical.

8. The ureteral rapid liquid-gas dilatation catheter kit of claim 1, further comprising a constant pressure water supplement device or a constant pressure gas supplement device; and the constant-pressure water supplementing device or the constant-pressure air supplementing device is connected with the third channel or the seventh channel.

9. Use of the ureteral rapid liquid-gas expansion conduit set according to any one of claims 1 to 8 for ureteral expansion, comprising the steps of:

step two: the second ureteral catheter is placed into the ureter through the urinary bladder along the urethra, liquid or gas is filled into the third balloon and the fourth balloon by using the fifth channel and the sixth channel, the ureter part between the third balloon and the fourth balloon is sealed by the expanded third balloon and the expanded fourth balloon, liquid or gas is injected into the ureteral cavity gap between the two balloons through the seventh channel and the second opening, the sealed part of the ureter is expanded, and the expansion time can last for a plurality of hours; in the expansion process, urine generated in the kidney flows out of the body through the tip drainage channel opening and the fourth channel at any time, so that the pressure in the kidney is prevented from increasing.

10. The use method of the ureteral rapid liquid-gas expansion pipeline kit according to claim 9, wherein when liquid or gas is injected into the third channel or the seventh channel, a constant pressure water supplementing device or a constant pressure gas supplementing device can be connected to the third channel or the seventh channel, so as to directly measure the pressure of the blocked ureter, and accordingly, the amount of the liquid and the gas injected into the third channel or the seventh channel can be regulated.