Urethral catheterization device for urology department

Abstract

The utility model discloses a urinary catheterization device for the urology department, and relates to the technical field of nursing equipment, and the urinary catheterization device comprises a fixing assembly, a limiting assembly and a drainage assembly; the fixing assembly is worn on the body of a patient; the limiting assembly is used for limiting the penis position of the patient; the limiting assembly comprises a limiting cylinder, the limiting cylinder is in a vertically-through cylinder shape, and the limiting cylinder is arranged on the fixing assembly; the drainage assembly is used for leading urine of a patient out; the drainage assembly is arranged on the limiting cylinder; the limiting assembly further comprises a magnetic attraction strip. The penis of a patient can abut against the magnetic attraction ring through the telescopic part made of a shaping pipe, the gap between the penis of the patient and the telescopic part is reduced, and the situation that when the patient lies on a sickbed to urinate, urine remains on the inner wall of the gap between the telescopic part and the penis of the patient and cannot be discharged is effectively prevented; meanwhile, the telescopic piece made of the elastic tube can adapt to the length of the penis of different patients penetrating into the limiting cylinder, and adjustment can be conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of nursing equipment, in particular to a urinary catheterization device for urology. Background Art

[0002] Urology is a branch of medicine that studies the male and female urinary and reproductive systems. It is a subspecialty of surgery. The male urinary and reproductive systems are inseparable, while the female urinary tract opens into the vulva. Regardless of gender, the urinary tract and reproductive tract are closely related, and diseases of the two often affect each other. Catheterization devices are often used in urology.

[0003] In the prior art, a plastic anti-backflow one-way valve is also provided on the diversion device, so that urine can only flow into the drainage bag through the drainage tube, but cannot flow into the penis sleeve from the drainage bag, thereby maintaining a dry environment in the penis sleeve and reducing the probability of urinary tract infection. In addition, an air bag is also provided in the penis sleeve. When gas is inflated into the air bag from the inflation port, the air bag expands, and the expanded air bag supports the penis sleeve, thereby preventing the penis sleeve from being attached to the skin and causing eczematous dermatitis or skin infection. However, during use, the size and length of the patient's penis are different, and the patient's penis cannot completely contact the connection port, leaving a large gap. When the patient lies on the bed to urinate, the connection port is Urine remains on the inner wall of the gap between the opening and the patient's penis and cannot be discharged, resulting in moisture inside. For example, a urinary catheterization device provided by authorization announcement No. CN210728301U, when in use, wear a penis trousers on the patient, set the penis sleeve on the outside of the penis, connect the opening with the penis sleeve, seal and screw the connector on the penis sleeve with the connecting port on the diversion device, fill the gas into the airbag from the inflation port, and the urinary catheterization device is connected and can be used. If the urinary catheterization device needs to be carried around, the drainage bag is tied to the root of the thigh by an elastic strap to facilitate the patient's movement, and then when the height of the urine reaches the bottom of the inner drainage bag, open the outlet valve and pour out the urine.

[0004] It has a major disadvantage: during use, the size and length of the patient's penis are different, and the patient's penis cannot completely contact the connecting port, leaving a large gap. When the patient lies on the hospital bed to urinate, urine remains on the inner wall of the gap between the connecting port and the patient's penis and cannot be discharged, resulting in internal moisture. Utility Model Content

[0005] The embodiment of the present application provides a urological catheterization device, which solves the problem in the prior art that the patient's penis is of different sizes and lengths, and the patient's penis cannot be completely pressed against the connecting port, leaving a large gap. When the patient lies on the hospital bed to urinate, urine remains on the inner wall of the gap between the connecting port and the patient's penis and cannot be discharged, resulting in internal moisture. The telescopic part made of a shaped tube material can make the patient's penis press against the magnetic suction ring, thereby reducing the gap between the patient's penis and the telescopic part; at the same time, the telescopic part made of an elastic tube material can adapt to the length of the penis of different patients inserted into the limiting cylinder and be adjusted.

[0006] The embodiment of the present application provides a urological catheterization device, including a fixing component, a limiting component and a drainage component;

[0007] The fixing assembly is worn on the patient's body;

[0008] The limiting component is used to limit the position of the patient's penis;

[0009] The limiting assembly includes a limiting cylinder, which is a cylindrical body that penetrates from top to bottom and is arranged on the fixing assembly;

[0010] The drainage component is used to drain urine from the patient;

[0011] The drainage component is arranged on the limiting cylinder;

[0012] The limiting component also includes a magnetic attraction strip;

[0013] There are four magnetic strips, which are evenly spaced and fixed on the inner wall of the limiting cylinder, and the lower end of the magnetic strip is flush with the lower end of the limiting cylinder;

[0014] The drainage assembly includes a telescopic member and a magnetic suction ring;

[0015] The telescopic part is made of a shaped tube, the magnetic ring is a cylindrical shape that penetrates from top to bottom, the telescopic part is located in the limiting cylinder, the magnetic ring is fixed to the upper end of the telescopic part, and the side wall of the magnetic ring is tightly attached to the inner wall of the limiting cylinder and the magnetic strip.

[0016] As an improvement, the limiting cylinder is made of polyethylene;

[0017] The length direction of the magnetic strip is parallel to the axis of the limiting cylinder;

[0018] The axes of the telescopic member and the magnetic ring are in the same straight line as the axis of the limiting cylinder; the outer ring of the magnetic ring is magnetically attracted to the side of the magnetic strip close to the axis of the limiting cylinder;

[0019] When the patient's penis is placed in the limiting cylinder, it contacts the magnetic attraction ring.

[0020] As an improvement, the fixing assembly includes fixing pants, an opening and a fixing sleeve;

[0021] The fixed pants have an opening on one side, and the fixed tube is fixed in the opening;

[0022] The limiting assembly also includes a fixing block, a supporting bag and an inflation tube;

[0023] There are two fixing blocks, which correspond to the upper and lower ends of the limiting cylinder one by one. The fixing blocks are cylindrical and penetrate from top to bottom. The two fixing blocks are fixed to the upper and lower ends of the limiting cylinder respectively.

[0024] A fixing block away from the magnetic strip is threadedly connected in the fixing cylinder;

[0025] The support bag is spiral-shaped, fixed to the outer ring of the limiting cylinder, and has an inflation tube on one side of the support bag;

[0026] The drainage assembly also includes a storage bag, a fixing strap, a delivery tube, a stopper and a one-way valve;

[0027] There are two fixing straps, and the fixing straps are fixed on two sides of the storage bag;

[0028] The delivery tube is fixed on the storage bag;

[0029] The one-way valve is fixed on the lower side of the limit block, the end of the delivery tube away from the storage bag is fixed to the output end of the one-way valve, and the limit block is threadedly connected to the fixed block away from the fixed cylinder;

[0030] The lower end of the telescopic member is fixed on the limiting block.

[0031] As an improvement, the axis of the fixing block and the axis of the limiting cylinder are on the same straight line;

[0032] The delivery pipe passes through the limiting block, the telescopic member and the magnetic attraction ring and is communicated with the interior of the limiting cylinder.

[0033] As an improvement, the drainage component further includes a sealing layer;

[0034] The sealing layer is annular and made of latex material;

[0035] The outer ring of the sealing layer is fixed on the inner wall of the limiting cylinder and is located above the magnetic attraction strip, and the inner ring of the sealing layer is fixed on the magnetic attraction ring.

[0036] As an improvement, the axis of the sealing layer and the axis of the limiting cylinder are on the same straight line.

[0037] As an improvement, the limit assembly further includes an air inlet, an air outlet and an air delivery pipe;

[0038] The side wall of the limiting cylinder is provided with an air inlet and an air outlet, and the air inlet and the air outlet are provided with exhaust one-way valves;

[0039] The air delivery pipe is fixed on the outer ring of the limiting cylinder, and the air delivery pipe is communicated with the air inlet.

[0040] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0041] Firstly, the telescopic part made of the shaping tube material can make the patient's penis contact the magnetic suction ring, reduce the gap between the patient's penis and the telescopic part, and effectively prevent the patient from lying on the bed and urinating, and urine will remain on the inner wall of the gap between the telescopic part and the patient's penis, and cannot be discharged; at the same time, the telescopic part made of the elastic tube material can be adjusted to the length of the penis of different patients that penetrates into the limiting tube;

[0042] Secondly, it can effectively prevent the magnetic ring from being unable to contact the patient's penis due to the change in the length of the patient's penis. The elastic sealing layer can adjust the position of the magnetic ring to reset it. At the same time, the sealing layer can improve the sealing effect and prevent urine from penetrating into the gap between the magnetic ring and the telescopic member and the inside of the limiting cylinder;

[0043] Thirdly, by drying the patient's penis, the inner ring of the sealing layer, the inner ring of the magnetic attraction ring and the inner wall of the telescopic part, the influence of the humid environment on the patient's penis and the occurrence of skin diseases can be prevented, while the patient's comfort can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a front view of a urinary catheterization device for urology of the utility model;

[0045] Figure 2 This is a front view of a fixing assembly of a urology catheterization device according to the utility model;

[0046] Figure 3 This is a front view of a limit assembly and a drainage assembly of a urology catheterization device according to the utility model;

[0047] Figure 4 This is a front sectional view of a limiting component of a urinary catheterization device for urology according to the utility model;

[0048] Figure 5 This is a front sectional view of a limiting tube of a urinary catheterization device for urology according to the utility model;

[0049] Figure 6 This is a schematic diagram of the installation of a sealing layer of a urinary catheterization device for urology according to the utility model;

[0050] Figure 7 The utility model is a schematic diagram of the air inlet and the air outlet of a urinary catheterization device for urology.

[0051] In the figure: 100, fixing assembly; 110, fixing pants; 111, opening; 120, fixing tube;

[0052] 200, limit assembly; 210, limit cylinder; 211, air inlet; 212, air outlet; 220, fixing block; 230, support bag; 231, inflatable tube; 240, magnetic strip; 250, air delivery tube;

[0053] 300, drainage assembly; 310, storage bag; 320, fixing strap; 330, delivery tube; 340, limit block; 350, one-way valve; 360, telescopic part; 370, magnetic ring; 380, sealing layer. DETAILED DESCRIPTION

[0054] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0055] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0057] When in use, the male patient wears the fixing pants 110 and passes the penis through the opening 111, and puts the limiting tube 210 on the patient's penis. The patient's penis contacts the magnetic ring 370 and is threadedly connected and fixed to the fixing tube 120 through the fixing block 220 at the upper end. The supporting bag 230 is inflated through the inflation tube 231 to expand the supporting bag 230 and support the limiting tube 210. The storage bag 310 can be fixed to the base of the thigh through the fixing strap 320 for easy movement. Embodiment 1

[0058] like Figure 1-Figure 5 As shown, the present application is a urological catheterization device, comprising a fixing component 100, a limiting component 200 and a drainage component 300;

[0059] The fixing assembly 100 is worn on the patient's body;

[0060] The limiting assembly 200 is used to limit the position of the patient's penis;

[0061] The limiting assembly 200 includes a limiting cylinder 210, which is a cylindrical body that penetrates from top to bottom. The limiting cylinder 210 is arranged on the fixing assembly 100;

[0062] The limiting cylinder 210 is made of polyethylene;

[0063] The drainage component 300 is used to drain urine from the patient;

[0064] The drainage assembly 300 is disposed on the limiting cylinder 210;

[0065] The limiting assembly 200 further includes a magnetic strip 240;

[0066] There are four magnetic strips 240, the length direction of which is parallel to the axis of the limiting cylinder 210, and the magnetic strips 240 are evenly spaced and fixed on the inner wall of the limiting cylinder 210, and the lower end of the magnetic strips 240 is flush with the lower end of the limiting cylinder 210;

[0067] The drainage assembly 300 includes a telescopic member 360 and a magnetic ring 370;

[0068] The telescopic member 360 is made of a shaped tube, and the magnetic ring 370 is a cylindrical body that is through from top to bottom. The axes of the telescopic member 360 and the magnetic ring 370 are on the same straight line as the axis of the limiting cylinder 210. The telescopic member 360 is located in the limiting cylinder 210, and the magnetic ring 370 is fixed to the upper end of the telescopic member 360. The side wall of the magnetic ring 370 is in close contact with the inner wall of the limiting cylinder 210 and the magnetic strip 240.

[0069] The outer ring of the magnetic attraction ring 370 is magnetically attracted to the magnetic attraction strip 240 on the side close to the axis of the limiting cylinder 210, and the two are fixed in position by adsorption, and can be slid up and down to adjust the position;

[0070] When the patient's penis is placed in the limiting cylinder 210, it contacts the magnetic ring 370;

[0071] The fixing assembly 100 includes fixing pants 110, an opening 111 and a fixing tube 120;

[0072] The fixing pants 110 have an opening 111 on one side, the fixing tube 120 is fixed in the opening 111, and the patient's penis can be placed through the fixing tube 120;

[0073] The limiting assembly 200 further includes a fixing block 220, a supporting bag 230 and an inflation tube 231;

[0074] There are two fixing blocks 220, which correspond to the upper and lower ends of the limiting cylinder 210 respectively. The fixing blocks 220 are cylindrical and penetrate from top to bottom. The axis of the fixing blocks 220 and the axis of the limiting cylinder 210 are on the same straight line. The two fixing blocks 220 are fixed to the upper and lower ends of the limiting cylinder 210 respectively.

[0075] The fixing block 220 away from the magnetic strip 240 is threadedly connected in the fixing cylinder 120;

[0076] The support bag 230 is spiral-shaped and fixed to the outer ring of the limiting cylinder 210. One side of the support bag 230 is provided with an inflation tube 231.

[0077] The drainage assembly 300 further includes a storage bag 310, a fixing strap 320, a delivery tube 330, a stopper 340 and a one-way valve 350;

[0078] There are two fixing straps 320, and the fixing straps 320 are fixed on both sides of the storage bag 310;

[0079] The storage bag 310 can be fixed on the patient's thigh by a fixing strap 320;

[0080] The delivery tube 330 is fixed on the storage bag 310;

[0081] The one-way valve 350 is fixed to the lower side of the limit block 340, the end of the delivery tube 330 away from the storage bag 310 is fixed to the output end of the one-way valve 350, and the limit block 340 is threadedly connected to the fixed block 220 away from the fixed cylinder 120;

[0082] The lower end of the telescopic member 360 is fixed on the limit block 340, and the delivery pipe 330 passes through the limit block 340, the telescopic member 360 and the magnetic ring 370 and communicates with the interior of the limit cylinder 210;

[0083] The patient's penis contacts the magnetic ring 370 , and the discharged urine can enter the delivery tube 330 through the magnetic ring 370 , the telescopic member 360 , the limit block 340 and the one-way valve 350 , and be delivered to the storage bag 310 for storage.

[0084] When in use, the male patient wears the fixing pants 110 and passes the penis through the opening 111, and puts the limiting tube 210 on the patient's penis. The patient's penis contacts the magnetic ring 370 and is threadedly connected and fixed to the fixing tube 120 through the fixing block 220 at the upper end. The supporting bag 230 is inflated through the inflation tube 231 to expand the supporting bag 230 and support the limiting tube 210. The storage bag 310 can be fixed to the base of the thigh through the fixing strap 320 for easy movement.

[0085] Compared with the prior art, the telescopic part 360 made of a shaped tube material can make the patient's penis come into contact with the magnetic ring 370, thereby reducing the gap between the patient's penis and the telescopic part 360, and effectively preventing urine from remaining on the inner wall of the gap between the telescopic part 360 and the patient's penis when the patient is lying on the bed to urinate, and the urine cannot be discharged. At the same time, the telescopic part 360 made of an elastic tube material can adapt to the length of the penis of different patients inserted into the limiting cylinder 210 and be adjusted. Embodiment 2

[0086] When the first embodiment is in use, the patient's penis is pressed against the magnetic ring 370 to reduce the gap and reduce urine residue. During the use of the patient, the length of the patient's penis may change. When the length changes and presses against the magnetic ring 370 and the telescopic member 360, the fixed position of the telescopic member 360 is changed. After the length of the patient's penis returns to normal, the telescopic member 360 cannot be reset due to the fixation of the magnetic ring 370, resulting in the subsequent inability of the magnetic ring 370 to press against the patient's penis. Based on this, the solution of the first embodiment is improved, such as Figure 6 As shown:

[0087] The drainage assembly 300 further includes a sealing layer 380;

[0088] The sealing layer 380 is annular and made of latex material;

[0089] The axis of the sealing layer 380 is in the same straight line as the axis of the limiting cylinder 210. The outer ring of the sealing layer 380 is fixed to the inner wall of the limiting cylinder 210 and is located above the magnetic strip 240. The inner ring of the sealing layer 380 is fixed to the magnetic ring 370.

[0090] The sealing layer 380 is elastic and can reset the magnetic ring 370 while improving the sealing effect.

[0091] During use, when the length of the patient's penis changes and contacts the magnetic ring 370, the telescopic member 360 and the magnetic ring 370 retract. When the length of the patient's penis returns to normal, the elasticity of the sealing layer 380 keeps the magnetic ring 370 in contact with the patient's penis at all times for reset.

[0092] It can effectively prevent the magnetic ring 370 from being unable to contact the patient's penis due to changes in the length of the patient's penis. The position of the magnetic ring 370 can be adjusted through the elastic sealing layer 380 to reset it. At the same time, the sealing layer 380 can improve the sealing effect and prevent urine from penetrating into the gap between the magnetic ring 370 and the telescopic part 360 and the inside of the limiting cylinder 210. Embodiment 3

[0093] When the second embodiment is in use, the installed magnetic ring 370 and the sealing layer 380 are pressed against the patient's penis to reduce urine residue. However, during use, the patient's penis is stored in the limiting tube 210 for a long time, and the ventilation effect is poor. After urination, urine will remain on the patient's penis, the inner ring of the sealing layer 380, the inner ring of the magnetic ring 370 and the inner wall of the telescopic member 360 for a long time. The patient's penis is stored in a humid environment for a long time, which will cause skin disease problems. Based on this, the solution of the second embodiment is improved, such as Figure 7 As shown:

[0094] The limiting assembly 200 further includes an air inlet 211, an air outlet 212 and an air delivery pipe 250;

[0095] The side wall of the limiting cylinder 210 is provided with an air inlet 211 and an air outlet 212, and the air inlet 211 and the air outlet 212 are provided with exhaust check valves;

[0096] The air delivery pipe 250 is fixed to the outer ring of the limiting cylinder 210, and the air delivery pipe 250 is connected to the air inlet 211;

[0097] Gas is supplied to the limiting tube 210 through the gas supply pipe 250 to dry the patient's penis, the inner circle of the sealing layer 380 , the inner circle of the magnetic attraction ring 370 and the inner wall of the telescopic member 360 , and the gas can be discharged through the gas outlet 212 .

[0098] After the patient finishes urinating, the exhaust one-way valves in the air inlet 211 and the air outlet 212 can be opened, and the gas can be transported from the air pipe 250 and enter through the exhaust one-way valve in the air inlet 211 to dry the patient's penis, the inner circle of the sealing layer 380, the inner circle of the magnetic ring 370 and the inner wall of the telescopic member 360. At the same time, the gas can be discharged through the exhaust one-way valve in the air outlet 212.

[0099] By drying the patient's penis, the inner ring of the sealing layer 380, the inner ring of the magnetic ring 370 and the inner wall of the telescopic member 360, the influence of the humid environment on the patient's penis and the occurrence of skin diseases can be prevented, while the patient's comfort can be improved.

[0100] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A urinary catheterization device for urology, comprising a fixing component (100), a limiting component (200) and a drainage component (300); The fixing assembly (100) is worn on the patient's body; The limiting component (200) is used to limit the position of the patient's penis; The limiting assembly (200) comprises a limiting cylinder (210), the limiting cylinder (210) is in the shape of a cylinder that penetrates from top to bottom, and the limiting cylinder (210) is arranged on the fixing assembly (100); The drainage component (300) is used to drain urine from a patient; The drainage assembly (300) is arranged on the limiting cylinder (210); It is characterized in that The limiting assembly (200) further includes a magnetic attraction strip (240); There are four magnetic strips (240), and the magnetic strips (240) are evenly spaced and fixed on the inner wall of the limiting cylinder (210), and the lower ends of the magnetic strips (240) are flush with the lower end of the limiting cylinder (210); The drainage component (300) comprises a telescopic member (360) and a magnetic attraction ring (370); The telescopic member (360) is made of a shaped tube material, the magnetic attraction ring (370) is in the shape of a cylinder that passes through from top to bottom, the telescopic member (360) is located in the limiting cylinder (210), the magnetic attraction ring (370) is fixed to the upper end of the telescopic member (360), and the side wall of the magnetic attraction ring (370) is in close contact with the inner wall of the limiting cylinder (210) and the magnetic attraction strip (240).

2. A urological catheterization device according to claim 1, characterized in that: The limiting cylinder (210) is made of polyethylene; The length direction of the magnetic attraction strip (240) is parallel to the axis of the limiting cylinder (210); The axes of the telescopic member (360) and the magnetic attraction ring (370) are on the same straight line as the axis of the limiting cylinder (210); the outer ring of the magnetic attraction ring (370) is magnetically attracted to the magnetic strip (240) on the side close to the axis of the limiting cylinder (210); When the patient's penis is placed in the limiting cylinder (210), it contacts the magnetic attraction ring (370).

3. A urological catheterization device according to claim 1, characterized in that: The fixing assembly (100) comprises fixing pants (110), an opening (111) and a fixing tube (120); The fixed pants (110) have an opening (111) on one side, and the fixed tube (120) is fixed in the opening (111); The limiting assembly (200) further comprises a fixing block (220), a supporting bag (230) and an inflation tube (231); There are two fixing blocks (220), which correspond to the upper and lower ends of the limiting cylinder (210) one by one. The fixing blocks (220) are cylindrical and penetrate from top to bottom. The two fixing blocks (220) are fixed to the upper and lower ends of the limiting cylinder (210) respectively. A fixing block (220) away from the magnetic attraction strip (240) is threadedly connected in the fixing cylinder (120); The support bag (230) is spiral-shaped, the support bag (230) is fixed to the outer ring of the limiting cylinder (210), and one side of the support bag (230) is provided with an inflation tube (231); The drainage assembly (300) further comprises a storage bag (310), a fixing strap (320), a delivery tube (330), a stop block (340) and a one-way valve (350); There are two fixing straps (320), and the fixing straps (320) are fixed on two sides of the storage bag (310); The delivery tube (330) is fixed on the storage bag (310); The one-way valve (350) is fixed to the lower side of the limiting block (340), one end of the delivery tube (330) away from the storage bag (310) is fixed to the output end of the one-way valve (350), and the limiting block (340) is threadedly connected to the fixing block (220) away from the fixing cylinder (120); The lower end of the telescopic member (360) is fixed on the limiting block (340).

4. A urological catheterization device as claimed in claim 3, characterized in that: The axis of the fixing block (220) and the axis of the limiting cylinder (210) are on the same straight line; The delivery pipe (330) passes through the limiting block (340), the telescopic member (360) and the magnetic attraction ring (370) and is communicated with the interior of the limiting cylinder (210).

5. A urological catheterization device according to claim 4, characterized in that: The drainage assembly (300) further includes a sealing layer (380); The sealing layer (380) is annular and is made of latex material; The outer ring of the sealing layer (380) is fixed to the inner wall of the limiting cylinder (210) and is located above the magnetic attraction strip (240), and the inner ring of the sealing layer (380) is fixed on the magnetic attraction ring (370).

6. A urological catheterization device according to claim 5, characterized in that: The axis of the sealing layer (380) and the axis of the limiting cylinder (210) are on the same straight line.

7. A urological catheterization device according to claim 5, characterized in that: The limiting assembly (200) further comprises an air inlet (211), an air outlet (212) and an air delivery pipe (250); An air inlet (211) and an air outlet (212) are provided on the side wall of the limiting cylinder (210), and exhaust check valves are provided in the air inlet (211) and the air outlet (212); The air delivery pipe (250) is fixed to the outer ring of the limiting cylinder (210), and the air delivery pipe (250) is in communication with the air inlet (211).

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