CN113499533A

CN113499533A - Urethral perfusion apparatus and use method thereof

Info

Publication number: CN113499533A
Application number: CN202110842744.8A
Authority: CN
Inventors: 张海梅; 秦爽; 郝璇; 陈露珍; 邱春艳
Original assignee: Chongqing University Cancer Hospital
Current assignee: Chongqing University Cancer Hospital
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-10-15
Anticipated expiration: 2041-07-26
Also published as: CN113499533B

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a urethra perfusion device which comprises a perfusion box body, wherein the perfusion box body is internally divided into a liquid injection area, a waste liquid area and a pressure changing area. The invention realizes the perfusion and recovery of the liquid medicine through the pressure difference of each area, realizes the separation of perfusion, pressurization and recovered waste liquid through the partition treatment, realizes the pressurization in the perfusion device by changing the pressure intensity in the perfusion device through the vortex effect, and ensures that the liquid medicine does not flow back after perfusion by reducing the volume and increasing the pressure intensity, and realizes the recovery of the waste liquid through the reverse pressure difference; the operation is simple, and each step can work independently, so that the operability of the method is improved.

Description

Urethral perfusion apparatus and use method thereof

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a urethral perfusion apparatus and a use method thereof.

Background

At present, the main perfusion modes adopted by the male urethra perfusion treatment are as follows: the injection is extracted by a 20ml syringe, the needle head is removed for standby, the male is disinfected according to the male catheterization routine, a hole towel is laid, sterile gloves are worn, the urethral orifice is disinfected again, the penis and the abdominal wall are lifted to 60 degrees by using sterile gauze at the left hand, the nipple is tightly attached to the urethral orifice by using the syringe at the right hand, the liquid medicine is slowly injected, and the coronary sulcus is immediately tied by using the gauze after the medicine is pushed, so that the urine is prevented from overflowing. Then the penis is placed on the lower abdomen with the abdomen side upward, the liquid medicine is kept for 15-20 minutes, and then the gauze is untied and is discharged automatically. The biggest defect of the perfusion method is that the nipple of the syringe is not tightly connected with the urethral orifice, so that the liquid medicine is easy to overflow, the waste of the liquid medicine is caused, and the treatment effect cannot be achieved. The material of the injector nipple is hard, and the mucous membrane at the urethral orifice is weak and extremely sensitive, so that the mucous membrane is easily damaged and uncomfortable; tying the coronary sulcus with gauze may affect blood circulation.

Chinese patent publication No. CN208799670U discloses a practical urethral perfusion apparatus, which comprises a catheter made of silica gel, a side hole is arranged on the side wall of one end of the catheter, and an empty needle connecting device is arranged at the other end of the catheter, and the empty needle connecting device adopts a positive pressure joint or a one-way valve; the end part of the catheter provided with the empty needle connecting device is also provided with a condom. The utility model provides a practical perfusion syringe is used for the urethra to fill, not only simplifies the operation flow, makes things convenient for the nurse to operate, reduces the cost of filling, can also reduce the liquid medicine seepage, reduces the obstructed risk of penis blood circulation, alleviates uncomfortable symptoms such as penis distending pain, improves the comfort level that the patient filled, makes the urethra fill reach better effect of using medicine. Meanwhile, the device can also be used for urinary incontinence control training of patients after ileum bladder replacement surgery and prostate cancer radical surgery. The utility model can be used for multiple purposes and can bring the maximum benefit into play.

However, the following problems still exist:

1. when the liquid medicine is filled into the urethra, the situation that the liquid medicine is not filled into the urethra or the liquid medicine is wasted due to backflow of the liquid medicine can occur.

2. The cleaned liquid medicine directly flows to the ground and needs to be cleaned again, which brings inconvenience to clinical work.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a urethral perfusion apparatus, which is used for solving the problems of time and labor waste, low efficiency, unstable connection and low structural strength in the prior art during assembly and maintenance; when the liquid medicine is filled into the urethra, the situation that the liquid medicine is not filled into the urethra or the liquid medicine is wasted due to backflow of the liquid medicine can occur; the invention also provides a using method of the urethral perfusion apparatus, which is convenient to operate, simple and understandable, and can be mastered by operators through simple training; the operation is simple, and each step can work independently, so that the operability of the method is improved.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a urethra perfusion ware, is including filling the box body, it is three region to divide into in the box body to fill, three region is notes liquid district, waste liquid district and pressure changing district respectively, be equipped with the fly leaf between notes liquid district and the pressure changing district, be equipped with the translation board between notes liquid district and the waste liquid district, the translation board is the cavity board. Translation board both sides are equipped with the slide rail, realize the slip of translation board, realize the stock solution in the urethra fills through three subregion, retrieve waste liquid and pressurization, realize filling the automation to solved the liquid medicine direct flow after the washing and on the ground, need clear up once more, the problem of bringing inconvenience for clinical work, the removal through the translation board realizes annotating liquid and the recovery of irrigator, avoids waste liquid and liquid medicine to mix, increases the practicality of equipment.

Preferably, a temperature changer is arranged in the pressure changing zone, temperature changing valves are connected to two sides of the temperature changer, and two ends of each temperature changing valve are connected with the inner wall of the pressure changing zone. The temperature-changing valve at the cold air outlet end is provided with an opening at the joint of the temperature-changing valve and the filling box body, the opening is opened after gas separation, and cold air is directly discharged out of the filling device, so that the temperature of the cold air in the filling device cannot be changed, the pressure in the filling device cannot be influenced, the air pressure of the filling device during operation is stable, the temperature-changing valve is provided with a plurality of small holes, the small holes are divided into two layers, the second layer can move, when the temperature-changing valve needs to be opened, the two layers of small holes move to form dislocation, so that the temperature-changing valve is in an open state, and when the two layers of small holes coincide, the temperature-changing valve is in a closed state.

Preferably, the temperature changer comprises an air inlet, a vortex chamber, a separation orifice plate, a control valve, a cold air outlet and a hot air outlet, wherein the air inlet is connected with the vortex chamber, the separation orifice plate is arranged on the right side of the vortex chamber, and the control valve is arranged at the hot end. The normal temperature gas enters the gas inlet, expands and accelerates to the sound velocity in the gas inlet, and is injected into the vortex chamber from the tangential direction to form a free vortex, the rotating angular velocity of the free vortex is larger as the rotating angular velocity is closer to the center, because of different angular velocities, friction is generated between layers of the free vortex, the airflow angular velocity of the central part is the largest, the friction result is that energy is transferred to the airflow with lower angular velocity of the outer layer, the airflow of the central layer part loses energy, kinetic energy is low, velocity is reduced, temperature is reduced, the airflow is led out from one end through the orifice plate in the center of the vortex tube to obtain cold airflow required by refrigeration, the airflow of the outer layer part obtains momentum, kinetic energy is increased, and simultaneously, the kinetic energy is rubbed with the wall of the turbine tube to convert part of kinetic energy into heat energy, the heat airflow is led out from the other end of the vortex tube through the control valve to form heat airflow, and the flow and the temperature of the cold airflow and the hot airflow can be adjusted through the control valve, the heating and cooling of the variable pressure area are realized through the design, and the pressure change of the variable pressure area is realized.

Preferably, the two ends of the translation plate are provided with slide rails, the translation plate is composed of an upper plate and a lower plate, three air pressure valves are arranged between the upper plate and the lower plate, the lower plate is provided with three openings, and the air pressure valves are arranged at the openings. The three mouth of plywood highly reduces from left to right gradually down, and this design makes the waste liquid begin to store from the waste liquid district of right-hand member earlier, guarantees the waste liquid and stores the maximize to can set up the leakage fluid dram on waste liquid district and the wall of pouring the box body, make things convenient for the processing of waste liquid, avoid need remove whole perfusion apparatus when handling the waste liquid, reduced the work load of handling the waste liquid.

Preferably, the pressure changing area is further provided with a pressure changing plate, two ends of the pressure changing plate are movably connected with the pouring box body, the right side of the pressure changing plate is connected with an air cylinder, and the air cylinder is connected with the right wall of the pouring box body. The air cylinder is divided into a piston, a cylinder barrel and other structures, and the variable pressure plate moves through the movement of the piston, so that the volume of the variable pressure area is changed, and the purpose of changing air pressure is achieved.

The use method of the urethral perfusion apparatus comprises the following steps:

s1, before urethral perfusion, the cylinder is contracted, the movable plate is closed, the conduit to be perfused is connected to the opening on the left side of the perfusion box body, the translation plate is positioned on the right side of the opening, the pneumatic valve is closed, and warm boric acid solution with the concentration of 3% is perfused in the liquid injection area;

s2, when the pouring is started, the air cylinder contracts and extends to drive the pressure-changing plate to move leftwards, the pressure-changing plate compresses the space of the pressure-changing area to increase the pressure of the pressure-changing area, the movable plate is opened at the moment, and the liquid medicine is pushed out of the liquid injection area under the action of pressure difference because the pressure of the pressure-changing area is higher than that of the liquid injection area to finish pouring, and the liquid cannot flow back under the action of the pressure;

s3, after the liquid medicine is poured, the movable plate is closed, the translation plate moves to the opening, at the moment, the pressure in the equipment is atmospheric pressure, but the atmospheric pressure and the liquid pressure are added in the conduit, and the pressure in the conduit is greater than the pressure in the equipment, so that the liquid medicine flows back to the waste liquid area, and the recovery of the liquid medicine is completed.

Wherein S2 further includes: the temperature changer is opened at the moment, normal temperature gas is filled through the gas inlet, so that the gas enters the vortex chamber to form cold and hot air flows under the vortex effect, the temperature change valve at the hot gas outlet end is opened at the moment, the hot gas enters the pressure change area to further increase the pressure of the pressure change area, and the normal filling of the liquid medicine is ensured.

Wherein S3 further includes: after the movable plate is closed, the translation plate moves to the opening, liquid medicine flows back under the action of pressure difference, at the moment, the three air pressure valves are opened, the liquid medicine flows to the waste liquid area, and the height of the three air pressure valves is gradually reduced, so that the liquid medicine can fill the three waste liquid area once, and waste liquid recovery is completed.

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

the urethra perfusion apparatus of the invention has stable connection, high structural strength, convenient disassembly, assembly and maintenance, convenient operation, stability, reliability and long service life, realizes the separation of perfusion, pressurization and waste liquid recovery by partition treatment, realizes the pressurization in the perfusion apparatus by changing the pressure in the perfusion apparatus by vortex effect, ensures that liquid medicine does not flow back after being perfused by reducing the volume and increasing the pressure by reducing the volume, realizes the recovery of the waste liquid by reverse pressure difference, the connection part of the temperature change valve at the cold air outlet end and the perfusion box body is provided with an opening, the opening is opened after the gas is separated, the cold air is directly discharged out of the perfusion apparatus, so that the cold air does not change the temperature in the perfusion apparatus, further does not influence the pressure in the perfusion apparatus, ensures that the air pressure of the perfusion apparatus is stable when in operation, the temperature change valve is provided with a plurality of small holes which are divided into two layers, the second layer can move, when the temperature change valve needs to be opened, the two layers of small holes move to form dislocation, so that the temperature changing valve is in an open state, and when the two layers of small holes are overlapped, the temperature changing valve is in a closed state, and the applicability of the device is improved.

Drawings

FIG. 1 is a schematic perspective view of a urethral perfusion apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a urethral perfusion apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a urethral perfusion apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a temperature changer in an embodiment of the urethral perfusion apparatus of the present invention;

FIG. 5 is a schematic structural view of a temperature changer in an embodiment of the urethral perfusion apparatus of the present invention;

FIG. 6 is a cross-sectional view taken at line A-A of FIG. 5;

FIG. 7 is an enlarged schematic view of FIG. 6B;

reference numerals referred to in the drawings are: the perfusion box body 1, the liquid injection zone 101, the waste liquid zone 102, the pressure changing zone 103, the movable plate 2, the translation plate 3, the upper plate 301, the lower plate 302, the air pressure valve 303, the temperature changer 4, the temperature changing valve 401, the air inlet 402, the vortex chamber 404, the separation orifice plate 405, the control valve 406, the cold air outlet 407, the hot air outlet 408, the pressure changing plate 5 and the air cylinder 6.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples. It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Example one

As shown in fig. 1-7, a urethra perfusion apparatus comprises a perfusion box body 1, the interior of the perfusion box body 1 is divided into three regions, the three regions are a liquid injection region 101, a waste liquid region 102 and a pressure change region 103, a movable plate 2 is arranged between the liquid injection region 101 and the pressure change region 103, a translation plate 3 is arranged between the liquid injection region 101 and the waste liquid region 102, and the translation plate 3 is a hollow plate. Further, the sliding rails are arranged on two sides of the translation plate 3, so that the translation plate 3 can slide, liquid storage in urethral perfusion is realized through three partitions, waste liquid is recycled and pressurized, perfusion automation is realized, the problem that liquid medicine after cleaning directly flows to the ground and needs to be cleaned again, inconvenience is brought to clinical work is solved, liquid injection and recycling of the perfusion apparatus are realized through movement of the translation plate 3, the mixing of the waste liquid and the liquid medicine is avoided, and the practicability of the equipment is improved.

A temperature changer 4 is arranged in the pressure changing zone 103, two sides of the temperature changer 4 are both connected with temperature changing valves 401, and two ends of the two temperature changing valves 401 are connected with the inner wall of the pressure changing zone 103. Further, an opening is formed in the joint of the temperature change valve 401 at the end of the cold air outlet 407 and the pouring box body 1, the opening is opened after the air separation, and the cold air is directly discharged out of the pouring device, so that the cold air does not change the temperature in the pouring device, and further the pressure in the pouring device is not affected, and the air pressure of the pouring device during operation is stable, the temperature change valve 401 is provided with a plurality of small holes which are divided into two layers, the second layer can move, when the temperature change valve 401 needs to be opened, the two layers of small holes move to form dislocation, so that the temperature change valve 401 is in an open state, and when the two layers of small holes are overlapped, the temperature change valve 401 is in a closed state.

The two ends of the translation plate 3 are provided with slide rails, the translation plate 3 is composed of an upper plate 301 and a lower plate 302, three air pressure valves 303 are arranged between the upper plate 301 and the lower plate 302, the lower plate 302 is provided with three openings, and the air pressure valves 303 are arranged at the openings. Further, the three ports of the lower plate 302 are gradually reduced from left to right, so that waste liquid is firstly stored from the waste liquid zone at the rightmost end, the maximum storage of the waste liquid is ensured, the waste liquid zone 102 and the wall of the pouring box body 1 can be provided with a liquid discharge port, the waste liquid is conveniently treated, the whole pouring device is prevented from being moved when the waste liquid is treated, and the workload of treating the waste liquid is reduced.

The pressure changing area 103 is further provided with a pressure changing plate 5, two ends of the pressure changing plate 5 are movably connected with the pouring box body 1, the right side of the pressure changing plate 5 is connected with a cylinder 6, and the cylinder 6 is connected with the right wall of the pouring box body 1. Further, the air cylinder 6 is divided into a piston and a cylinder barrel, and other structures, and the variable pressure plate 5 is moved by the movement of the piston, so that the volume of the variable pressure area 103 is changed, and the purpose of changing the air pressure is achieved.

Example two

As a further improvement of the previous embodiment, as shown in fig. 1 to 7, the urethral perfusion apparatus includes a perfusion box 1, the perfusion box 1 is divided into three regions, the three regions are a liquid injection region 101, a waste liquid region 102 and a pressure changing region 103, a movable plate 2 is disposed between the liquid injection region 101 and the pressure changing region 103, a translation plate 3 is disposed between the liquid injection region 101 and the waste liquid region 102, and the translation plate 3 is a hollow plate. Further, the sliding rails are arranged on two sides of the translation plate 3, so that the translation plate 3 can slide, liquid storage in urethral perfusion is realized through three partitions, waste liquid is recycled and pressurized, perfusion automation is realized, the problem that liquid medicine after cleaning directly flows to the ground and needs to be cleaned again, inconvenience is brought to clinical work is solved, liquid injection and recycling of the perfusion apparatus are realized through movement of the translation plate 3, the mixing of the waste liquid and the liquid medicine is avoided, and the practicability of the equipment is improved.

The temperature changer 4 comprises an air inlet 402, a vortex chamber 404, a separation orifice plate 405, a control valve 406, a cold air outlet 407 and a hot air outlet 408, wherein the air inlet 402 is connected with the vortex chamber 404, the separation orifice plate 405 is arranged at the right side of the vortex chamber 404, and the control valve 406 is arranged at the hot end 408. Further, the normal temperature gas enters the gas inlet 402, expands and accelerates to the sound velocity in the gas inlet 402, and is injected into the vortex chamber 404 from the tangential direction to form a free vortex, the rotation angular velocity of the free vortex is larger as the free vortex is closer to the center, friction is generated between layers of the free vortex due to different angular velocities, the airflow angular velocity of the central part is the largest, the friction result is that energy is transferred to the airflow with lower angular velocity of the outer layer, the airflow of the central layer loses energy, kinetic energy is low, velocity is reduced, temperature is reduced, the cold airflow required for refrigeration is obtained by leading out from one end through the orifice plate in the center of the vortex tube, the airflow of the outer layer obtains momentum, kinetic energy is increased, and simultaneously rubs with the wall of the turbine tube to convert part of kinetic energy into heat energy, and the heat energy is led out from the other end of the vortex tube through the control valve to form hot airflow. The flow and the temperature of the cold air flow and the hot air flow can be adjusted by controlling the control valve, the temperature of the variable pressure zone 103 is increased and decreased, and the pressure change of the variable pressure zone 103 is realized.

The advantages of the second embodiment over the first embodiment are:

1. the sliding rails are arranged on the two sides of the translation plate 3, so that the translation plate 3 can slide, liquid storage in urethral perfusion is realized through three partitions, waste liquid is recovered and pressurized, perfusion automation is realized, the problem that the washed liquid medicine directly flows to the ground and needs to be cleaned again, and inconvenience is brought to clinical work is solved, liquid injection and recovery of the perfusion apparatus are realized through movement of the translation plate 3, the waste liquid and the liquid medicine are prevented from being mixed, and the practicability of the equipment is improved;

2. an opening is formed in the joint of the temperature change valve 401 at the end of the cold air outlet 407 and the pouring box body 1, the opening is opened after gas separation, and cold air is directly discharged out of the pouring device, so that the temperature of the cold air in the pouring device cannot be changed, the pressure in the pouring device cannot be influenced, the air pressure of the pouring device during operation is stable, the temperature change valve 401 is provided with a plurality of small holes which are divided into two layers, the second layer can move, when the temperature change valve 401 needs to be opened, the small holes of the two layers move to form dislocation, so that the temperature change valve 401 is in an open state, and when the small holes of the two layers are overlapped, the temperature change valve 401 is in a closed state;

3. the normal temperature gas enters the gas inlet 402, expands and accelerates to the sound velocity in the gas inlet 402, and is injected into the vortex chamber 404 from the tangential direction to form a free vortex, the rotating angular velocity of the free vortex is larger as the rotating angular velocity is closer to the center, friction is generated between layers of the free vortex due to different angular velocities, the airflow angular velocity of the central part is the largest, the friction result is that energy is transferred to the airflow with lower angular velocity of the outer layer, the airflow of the central layer part loses energy, kinetic energy is low, velocity is reduced, temperature is reduced, the airflow is led out from one end through the orifice plate in the center of the vortex tube to obtain cold airflow required by refrigeration, the airflow of the outer layer part obtains momentum, kinetic energy is increased, and meanwhile, the cold airflow is rubbed with the wall of the turbine tube to convert part of kinetic energy into heat energy, and the heat energy is led out from the other end of the vortex tube through the control valve to form hot airflow;

4. the three ports of the lower plate 302 are gradually reduced from left to right, so that waste liquid is firstly stored from the waste liquid area at the rightmost end by the design, the maximum storage of the waste liquid is ensured, and the waste liquid area 102 and the wall of the perfusion box body 1 can be provided with liquid discharge ports, thereby facilitating the treatment of the waste liquid, avoiding the need of moving the whole perfusion apparatus when treating the waste liquid, and reducing the workload of treating the waste liquid;

5. the air cylinder 6 is divided into a piston and a cylinder barrel and other structures, and the variable pressure plate 5 moves through the movement of the piston, so that the volume of the variable pressure area 103 is changed, and the purpose of changing air pressure is achieved.

The separation of filling, pressurizing and waste liquid recovery is realized through partition treatment, the pressurizing in the filling device is realized by changing the pressure in the filling device through the vortex effect, the pressure is increased by reducing the volume, the liquid medicine is ensured not to flow back after being filled, and the waste liquid recovery is realized through reverse pressure difference.

s1, before urethral perfusion, the air cylinder 6 is contracted, the movable plate 2 is closed, a catheter to be perfused is connected to the opening on the left side of the perfusion box body 1, the translation plate 3 is positioned on the right side of the opening, the air pressure valve 303 is closed, and 3% warm boric acid solution is perfused in the perfusion region 101;

s2, when pouring is started, the air cylinder 6 contracts and extends to drive the pressure-changing plate 5 to move leftwards, the pressure-changing plate 5 compresses the space of the pressure-changing area 103 to increase the pressure of the pressure-changing area 103, the movable plate 2 is opened at the moment, and the liquid medicine is pushed out of the liquid injection area 101 under the action of pressure difference due to the fact that the pressure of the pressure-changing area 103 is higher than that of the liquid injection area 101 to finish pouring, and liquid cannot flow back under the action of pressure;

s3, after the filling, the movable plate 2 is closed, and the translation plate 3 moves to the opening, at this time, the pressure in the apparatus is atmospheric pressure, but the pressure in the conduit is atmospheric pressure plus liquid pressure, and the pressure in the conduit is greater than the pressure in the apparatus, so that the liquid medicine flows back to the waste liquid region 102, and the recovery of the liquid medicine is completed.

Wherein S2 further includes: in the process of filling, the situation that the pressure is insufficient to push the liquid medicine occurs, at this time, the temperature changer 4 is opened, the normal temperature gas is filled through the gas inlet 402, so that the gas enters the vortex chamber 404, two hot and cold gas flows are formed under the vortex effect, at this time, the temperature change valve 401 at the end of the hot gas outlet 408 is opened, the hot gas enters the pressure change area 103 to further increase the pressure of the pressure change area 103, and the normal filling of the liquid medicine is ensured.

Wherein S3 further includes: after the movable plate 2 is closed, the translation plate 3 moves to the opening, the liquid medicine flows back under the action of pressure difference, at the moment, the three air pressure valves 303 are opened, the liquid medicine flows to the waste liquid area 102, and the liquid medicine can fill the three waste liquid areas once due to the fact that the heights of the three air pressure valves 303 are gradually decreased, and waste liquid recovery is completed.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a urethra perfusion syringe, its characterized in that, is including filling box body (1), be divided into three region in filling box body (1), three region is liquid injection district (101), waste liquid district (102) and variable pressure district (103) respectively, be equipped with between liquid injection district (101) and the variable pressure district (103) fly leaf (2), be equipped with translation board (3) between liquid injection district (101) and waste liquid district (102), translation board (3) are the cavity board.

2. A urethral perfusion device as claimed in claim (1), wherein: a temperature changer (4) is arranged in the pressure changing area (103), temperature changing valves (401) are connected to two sides of the temperature changer (4), and two ends of each temperature changing valve (401) are connected with the inner wall of the pressure changing area (103).

3. A urethral perfusion device as claimed in claim (2), wherein: the temperature changer (4) comprises an air inlet (402), a vortex chamber (404), a separation orifice plate (405), a control valve (406), a cold air outlet (407) and a hot air outlet (408), wherein the air inlet (402) is connected with the vortex chamber (404), the separation orifice plate (405) is arranged on the right side of the vortex chamber (404), and the control valve (406) is arranged at a hot end (408).

4. A urethral perfusion device as claimed in claim (3), wherein: translation board (3) both ends are equipped with the slide rail, translation board (3) comprise upper plate (301) and lower plate (302), be equipped with three atmospheric pressure valve (303) between upper plate (301) and lower plate (302), lower plate (302) are equipped with three opening, install in the opening part atmospheric pressure valve (303).

5. A urethral perfusion device as claimed in claim (4), wherein: the variable-pressure area (103) is further provided with a variable-pressure plate (5), two ends of the variable-pressure plate (5) are movably connected with the pouring box body (1), the right side of the variable-pressure plate (5) is connected with an air cylinder (6), and the air cylinder (6) is connected with the right wall of the pouring box body (1).

6. A urethral perfusion device as claimed in claim 7, comprising the steps of:

s1, before urethral perfusion, the air cylinder (6) is contracted, the movable plate (2) is closed, a catheter to be perfused is connected to an opening on the left side of the perfusion box body (1), the translation plate (3) is positioned on the right side of the opening, the air pressure valve (303) is closed, and warm boric acid solution with the concentration of 3% is perfused in the perfusion area (101);

s2, when pouring is started, the air cylinder (6) contracts and extends to drive the pressure-changing plate (5) to move leftwards, the pressure-changing plate (5) compresses the space of the pressure-changing area (103), the pressure of the pressure-changing area (103) is increased, the movable plate (2) is opened at the moment, and the liquid medicine is pushed out of the liquid injection area (101) under the action of pressure difference due to the fact that the pressure of the pressure-changing area (103) is higher than that of the liquid injection area (101), so that pouring is completed, and liquid cannot flow back under the action of the pressure;

s3, after the perfusion is finished, the movable plate (2) is closed, the translation plate (3) moves to the opening, at the moment, the pressure in the equipment is atmospheric pressure, but the atmospheric pressure and the liquid pressure are added in the conduit, and the pressure in the conduit is greater than the pressure in the equipment, so that the liquid medicine flows back to the waste liquid area (102) to finish the recovery of the liquid medicine.

7. The method of use of claim 8, wherein S2 further comprises: in the process of filling, the situation that the pressure is insufficient to push the liquid medicine occurs, at this time, the temperature changer 4 is opened, the normal temperature gas is filled through the gas inlet 402, so that the gas enters the vortex chamber 404, two hot and cold gas flows are formed under the vortex effect, at this time, the temperature change valve 401 at the end of the hot gas outlet 408 is opened, the hot gas enters the pressure change area 103 to further increase the pressure of the pressure change area 103, and the normal filling of the liquid medicine is ensured.

8. The method of use of claim 9, wherein S3 further comprises: after the movable plate 2 is closed, the translation plate 3 moves to the opening, the liquid medicine flows back under the action of pressure difference, at the moment, the three air pressure valves 303 are opened, the liquid medicine flows to the waste liquid area 102, and the liquid medicine can fill the three waste liquid areas once due to the fact that the heights of the three air pressure valves 303 are gradually decreased, and waste liquid recovery is completed.