Improved catheter

Abstract

The utility model discloses an improved catheter, which belongs to the technical field of medical instruments and comprises a catheter body, a three-way tube urine drainage tube and a pressure relief component, the urine drainage tube is connected to a discharge end of the catheter body, the catheter body is provided with a three-way tube, and the pressure relief component is arranged between the three-way tube and the urine drainage tube. The pressure relief assembly comprises a pressure relief valve and a pressure monitoring pipe which are sequentially arranged on the outer wall of the pipe body, and the three-way pipe comprises a main catheterization pipe, a side catheterization pipe and a switching valve. The urethral catheter has the advantages that after the urethral catheter is inserted into the body of a patient, urine of the human body can be drained and discharged, the pipe body is provided with the three-way pipe, the internal pipe of the urethral catheter can be switched through the switching valve, the urethral catheter main pipe is closed, the urethral catheter side pipe is opened, and a specimen or bladder irrigation and external medicine can be reserved from the urethral catheter side pipe. The catheter does not need to be separated, puncture operation with a needle is reduced, puncture injury caused by the needle is avoided, the catheter is provided with the pressure relief valve and the pressure monitoring pipe, and pipeline pressure can be monitored and relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an improved urinary catheter. Background Art

[0002] Urethral catheters are mainly used for patients who are unable to urinate, usually those with acute urinary retention or chronic urinary retention who need catheterization, as well as those who are unable to urinate independently after surgery. They all need urinary catheterization to drain urine and avoid overfilling of the bladder causing hydronephrosis and renal insufficiency. Urethral catheters are mainly rubber tubes or silicone tubes, and are also divided into double-lumen and triple-lumen. Double-lumen catheters have two vents from the urethral opening to the outlet: one is used to drain urine, and the other is to form an air bag; triple-lumen catheters are generally two hollow tubes: one is for drainage, the other is for flushing, and the middle one is for the air bag.

[0003] The urinary catheter in the prior art has the following defects when used: when the patient needs to take temporary medication or bladder irrigation, the catheter and the urine collection bag need to be separated, which increases the risk of infection for the patient and the chance of contaminating the bed sheets. There are two puncture positions on the urine collection bag. When the nursing staff performs bladder irrigation, they use an infusion set with a needle for puncture, which is easy to puncture the wrong puncture site by mistake, thereby causing urine leakage. Once urine leakage occurs, the urinary catheter needs to be re-placed, which increases the nursing workload and the economic burden on the patient. The nursing staff also has the safety hazard of being stabbed. At the same time, as disclosed in the utility model patent with announcement number CN220385504U A urinary catheter convenient for collecting urine specimens is disclosed, comprising a urinary catheter body, a reserved air bag docking interface, a docking port, a reserved three-way valve assembly and a positive pressure joint assembly. The outer end of the urinary catheter body is penetrated by a reserved air bag docking interface, and the inner side of the urinary catheter body is provided with a docking port. The outer end of the urinary catheter body is installed with a reserved three-way valve assembly, and the outer side of the reserved three-way valve assembly is penetrated by a first through pipe, a second through pipe and a third through pipe in sequence. The upper end of the second through pipe is nested with a positive pressure joint assembly. The pipeline connection is not tight enough, and there is a lack of pressure monitoring and pressure relief structure. The overall safety and durability of the urinary catheter need to be improved. Utility Model Content

[0004] In order to overcome the problems in the prior art that when giving patients temporary medication or bladder irrigation, the catheter and the urine collection bag need to be separated, which increases the risk of infection for patients and the chance of contaminating bed sheets, there are two puncture positions on the urine collection bag, and the nursing staff uses an infusion set with a needle for puncture when performing bladder irrigation, which is easy to puncture the wrong puncture site by mistake, thereby causing urine leakage, and the practicality and durability of the drainage tube itself are also relatively general. The utility model provides an improved urinary catheter, including a tube body, a three-way urine drainage tube and a pressure relief component, wherein the urine drainage tube is connected to At the discharge end of the tube body, a three-way tube is arranged on the tube body, a pressure relief assembly is arranged between the three-way tube and the urine drainage tube, the pressure relief assembly includes a pressure relief valve and a pressure monitoring tube which are sequentially arranged on the outer wall of the tube body, the three-way tube includes a urinary catheter main tube, a urinary catheter side tube and a switching valve, the urinary catheter main tube is arranged on one side of the tube body close to the urine drainage tube and both ends of the urinary catheter main tube are connected with the interior of the tube body, the urinary catheter side tube is vertically arranged on the outer surface of the urinary catheter main tube, and the switching valve is arranged on the outer surface of the connection between the urinary catheter main tube and the urinary catheter side tube.

[0005] After the urinary catheter is inserted into the patient's body, the urine of the human body can be drained out with the cooperation of the connection with the urine collecting bag outside the tube body, and a three-way tube is arranged on the tube body, and the internal pipeline of the urinary catheter can be switched by the switching valve, so that the urinary catheter main tube can be closed and the urinary catheter side tube can be opened, and specimens or bladder flushing and external medications can be retained from the urinary catheter side tube, without separating the urinary catheter, reducing needle puncture operations, avoiding the possibility of needlestick injuries, and further improving the safety of patients. Afterwards, the urinary catheter side tube can be closed by the switching valve, so that the tube body can be restored to normal use to drain urine, which greatly reduces the labor intensity of the staff. At the same time, a pressure relief valve and a pressure monitoring tube are arranged on the urinary catheter to monitor the pipeline pressure, further improving the safety of the use of the urinary catheter.

[0006] Preferably, the pressure relief valve and the pressure monitoring tube are both connected to the tube body, and the pressure monitoring tube is externally connected to a pressure transducer for detecting pipeline pressure.

[0007] Preferably, one-way valves are respectively provided inside the three-way pipe and inside the pipe body, and a bellows is provided on the pipe body.

[0008] Preferably, the top cover of the urinary catheter side tube is provided with a protective cap, and a sealing plug is provided at the connection between the bottom of the protective cap and the inner wall of the urinary catheter side tube.

[0009] The bellows arranged at the front section of the catheter can facilitate the expansion and contraction adjustment of the catheter. The one-way valve arranged inside the catheter can prevent urine reflux and greatly improve the anti-reflux effect of the catheter. The protective cap and sealing plug arranged on the catheter side tube can further enhance the sealing performance and prevent foreign objects such as impurities from entering the catheter when the pipeline is not connected, thereby further improving the safety of the use of the catheter.

[0010] Preferably, a cannula is provided at one end of the tube body away from the urine drainage tube, and a limiting air bag is provided on the tube body at a position beside the cannula.

[0011] Preferably, the end of the cannula is a flexible arc protrusion, and the outer surface of the cannula is formed with a plurality of diffusion holes for facilitating the diffusion of urine.

[0012] Preferably, the urine drainage tube is provided with a Y-shaped airbag cavity for communicating with the limiting airbag, and the Y-shaped airbag cavity is provided with an injection valve.

[0013] Preferably, a reinforcing sleeve is provided on the outer surface of the tube body, and a corrosion-resistant layer is provided on the inner wall of the tube body.

[0014] By providing a reinforcing sleeve on the outside of the catheter, the use strength of the catheter can be improved, making it less likely to break; by providing a corrosion-resistant coating on the inside of the catheter, its corrosion resistance can be improved, making it less likely to be corroded.

[0015] Preferably, the tube body and the three-way tube are made of silicone, and a sealing tape is provided at the connection between the tube body and the three-way tube.

[0016] Preferably, a side branch attachment is provided on the tube body near the position of the urine drainage tube, and a urinary catheter mark is provided on the side branch attachment.

[0017] Through the side branch attachment, the catheter label can be pasted and the label can be prevented from shifting or falling off, thereby increasing the standardization of the use of the catheter.

[0018] Beneficial effects:

[0019] The beneficial effects of the technical solution of the utility model are as follows:

[0020] (1) After the urinary catheter is inserted into the patient's body, the urine of the human body can be drained out by connecting the catheter body to the urine collection bag. A three-way tube is arranged on the catheter body, and the internal pipeline of the urinary catheter can be switched by a switching valve, so that the main catheter tube can be closed and the side catheter tube can be opened. Specimens or bladder flushing and external medication can be placed at the side catheter tube without separating the urinary catheter, reducing needle puncture operations and avoiding the possibility of needlestick injuries, further improving the safety of the patient. Afterwards, the side catheter tube can be closed by the switching valve, so that the catheter body can be restored to normal use and urine can be drained, which greatly reduces the labor intensity of the staff. At the same time, a pressure relief valve and a pressure monitoring tube are arranged on the catheter to monitor the pipeline pressure, further improving the safety of the use of the urinary catheter.

[0021] (2) The bellows provided at the front section of the catheter can facilitate the expansion and contraction adjustment of the catheter. The one-way valve provided inside the catheter can prevent urine reflux and greatly improve the anti-reflux effect of the catheter. The protective cap and sealing plug provided on the catheter side tube can further enhance the sealing performance and prevent foreign matter such as impurities from entering the catheter when the pipeline is not connected, thereby further improving the safety of the use of the catheter.

[0022] (3) By providing a reinforcing sleeve on the outside of the catheter, the use strength of the catheter can be improved, making it less likely to break. By providing a corrosion-resistant coating on the inside of the catheter, its corrosion resistance can be improved, making it less likely to be corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the improved urinary catheter of the utility model;

[0025] Figure 2 This is a schematic diagram of the connection structure of the front side of the improved urinary catheter of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal connection structure of the improved urinary catheter of the utility model;

[0027] Figure 4 The utility model is a schematic diagram of the internal structure of the improved urinary catheter upper tube body.

[0028] In the figure: 1. Tube body; 2. Three-way tube; 3. Y-shaped airbag cavity; 4. Urine drainage tube; 5. Limiting airbag; 6. Cannula; 7. Catheterization side tube; 8. Switching valve; 9. Pressure relief valve; 10. Pressure monitoring tube; 11. Side branch attachment; 12. Bellows; 13. Protective cap; 14. Sealing tape; 15. Injection valve; 16. Diffusion hole; 17. Sealing plug; 18. One-way valve; 19. Reinforced sleeve; 20. Corrosion-resistant layer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] After the catheter is inserted into the patient's body, the present embodiment can drain the urine of the human body with the connection and cooperation of the urine collection bag outside the catheter body, and a three-way tube is arranged on the catheter body, and the internal pipeline of the catheter can be switched by the switching valve, so that the main catheter tube can be closed and the side catheter tube can be opened, and specimens or bladder flushing and external medications can be retained from the side catheter tube, without separating the catheter, reducing needle puncture operations, avoiding the possibility of needlestick injuries, and further improving the safety of patients. Afterwards, the side catheter tube can be closed by the switching valve, so that the tube body can be restored to normal use to drain urine, which greatly reduces the labor intensity of the staff. At the same time, a pressure relief valve and a pressure monitoring tube are arranged on the catheter to monitor the pipeline pressure, further improving the safety of the use of the catheter. The specific implementation methods are as follows:

[0031] like Figures 1 to 4As shown, an improved urinary catheter comprises a tube body 1, a three-way tube 2, a urine drainage tube 4 and a pressure relief assembly, wherein the urine drainage tube 4 is connected to the discharge end of the tube body 1, a three-way tube 2 is arranged on the tube body 1, a pressure relief assembly is arranged between the three-way tube 2 and the urine drainage tube 4, the pressure relief assembly comprises a pressure relief valve 9 and a pressure monitoring tube 10 which are sequentially arranged on the outer wall of the tube body 1, the three-way tube 2 comprises a urinary catheter main tube, a urinary catheter side tube 7 and a switching valve 8, the urinary catheter main tube is arranged on one side of the tube body 1 close to the urine drainage tube 4 and both ends of the urinary catheter main tube are connected to the interior of the tube body 1, the urinary catheter side tube 7 is vertically arranged on the outer surface of the urinary catheter main tube, and the outer surface of the connection between the urinary catheter main tube and the urinary catheter side tube 7 is provided with a switching valve 8. After the urinary catheter is inserted into the patient's body, the urine of the human body can be drained out by connecting the tube body 1 to the urine collecting bag, and a three-way tube 2 is arranged on the tube body 1, and the internal pipeline of the urinary catheter can be switched by the switching valve 8, so that the urinary catheter main tube can be closed, and the urinary catheter side tube 7 can be opened, and specimens or bladder flushing and external medications can be placed at the urinary catheter side tube 7, without separating the urinary catheter, reducing needle puncture operations, avoiding the possibility of needlestick injuries, and further improving the safety of patients. Afterwards, the urinary catheter side tube 7 can be closed by the switching valve 8, so that the tube body 1 can be restored to normal use to drain urine, which greatly reduces the labor intensity of the staff. At the same time, a pressure relief valve 9 and a pressure monitoring tube 10 are arranged on the urinary catheter, which can monitor and relieve the pipeline pressure, and further improve the safety of the use of the urinary catheter.

[0032] The pressure relief valve 9 and the pressure monitoring tube 10 are both connected to the pipe body 1. The pressure monitoring tube 10 is externally connected to a pressure transducer that can be used to detect the pipeline pressure. Through the pressure monitoring tube 10, an external pressure transducer can be connected to measure the intra-abdominal pressure for patients with acute pancreatitis or retroperitoneal hemorrhage, providing a basis for doctors to adjust the treatment plan.

[0033] A one-way valve 18 is provided inside the three-way pipe 2 and inside the tube body 1, respectively. A bellows 12 is provided on the tube body 1. The one-way valve 18 provided inside the catheter can prevent urine reflux and greatly improve the anti-reflux effect of the catheter. The bellows 12 can facilitate the expansion and contraction adjustment of the catheter to achieve an appropriate length. At the same time, the bellows 12 is located outside the urethra to avoid discomfort to the human body.

[0034] The top cover of the urinary catheter side tube 7 is provided with a protective cap 13, and the connection between the bottom of the protective cap 13 and the inner wall of the urinary catheter side tube 7 is provided with a sealing plug 17. By providing the protective cap 13 and the sealing plug 17 on the urinary catheter side tube 7, the sealing performance can be further enhanced, and foreign objects such as impurities can be prevented from entering the urinary catheter when the pipeline is not connected, thereby further improving the safety of the use of the urinary catheter.

[0035] An insertion tube 6 is arranged at one end of the tube body 1 away from the urine drainage tube 4, and a limiting air bag 5 is arranged on the tube body 1 at a position beside the insertion tube 6. The insertion tube 6 is the insertion end of the urinary catheter, and the limiting air bag 5 can be used to fix the urinary catheter inside the human body.

[0036] The end of the cannula 6 is a flexible arc protrusion, and the outer surface of the cannula 6 is formed with a plurality of diffusion holes 16 for easy diffusion of urine. The flexible setting of the head of the cannula 6 can reduce the damage to the urethra and improve the comfort. The diffusion holes 16 can improve the urine discharge effect and avoid blockage.

[0037] A Y-shaped airbag cavity 3 for communicating with the limiting airbag 5 is provided on the urine drainage tube 4. An injection valve 15 is provided on the Y-shaped airbag cavity 3. 15 to 20 ml of sterile injection water can be injected into the limiting airbag 5 through the Y-shaped airbag cavity 3 to expand it and fix the catheter in the urethra to prevent it from detaching easily. The injection valve 15 can control the conduction of the Y-shaped airbag cavity 3.

[0038] The outer surface of the tube body 1 is provided with a reinforcing sleeve 19, and the inner wall of the tube body 1 is provided with a corrosion-resistant layer 20. The reinforcing sleeve 19 provided on the outside of the catheter can improve the use strength of the catheter and make it difficult to break, and the corrosion-resistant layer 20 provided on the inside of the catheter can improve its corrosion resistance and make it difficult to be corroded.

[0039] The material of the tube body 1 and the tee tube 2 is silicone. A sealing tape 14 is arranged at the connection between the tube body 1 and the tee tube 2. The sealing tape 14 is wound around the connection between the tube body 1 and the tee tube 2 to enhance the sealing effect.

[0040] A side branch attachment 11 is provided on the tube body 1 near the urine drainage tube 4, and a urinary catheter mark is provided on the side branch attachment 11. Through the side branch attachment 11, the urinary catheter mark can be pasted, and the mark can be prevented from shifting or falling off, thereby increasing the standardization of the use of the urinary catheter.

[0041] Working principle: After the urinary catheter is inserted into the patient's body, the urine of the human body can be drained out by connecting the urine collection bag outside the tube body, and a three-way tube is arranged on the tube body. Under normal conditions, the main tube of the three-way tube is connected to drain urine normally. The internal pipeline of the urinary catheter can be switched by the switching valve to close the main tube of the urinary catheter and open the side tube of the urinary catheter. Specimens or bladder flushing and external medication can be left at the side tube of the urinary catheter. There is no need to separate the urinary catheter, which reduces the operation of needle puncture and avoids the possibility of needle injury, further improving the safety of the patient. Afterwards, the side tube of the urinary catheter can be closed by the switching valve, so that the tube body can be restored to normal use to drain urine, which greatly reduces the labor intensity of the staff. At the same time, a pressure relief valve and a pressure monitoring tube are arranged on the urinary catheter to monitor the pipeline pressure. Under the action of the pressure relief valve, the pipeline can be depressurized and relieved to avoid damage to the pipeline or urethra due to excessive pressure, further improving the safety of the use of the catheter. The bellows arranged at the front section of the catheter can facilitate the expansion and contraction adjustment of the catheter. The one-way valve arranged inside the catheter can avoid urine reflux and greatly improve the anti-reflux effect of the catheter. The protective cap and sealing plug arranged on the catheter side tube can further enhance the sealing performance and prevent foreign objects such as impurities from entering the catheter when the pipeline is not connected, further improving the safety of the use of the catheter. The reinforcing sleeve arranged on the outside of the catheter can improve the use strength of the catheter and make it less likely to break. The corrosion-resistant coating arranged inside the catheter can improve its corrosion resistance and make it less likely to be corroded.

[0042] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can 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. An improved urinary catheter, characterized in that: The invention comprises a tube body (1), a three-way tube (2), a urine drainage tube (4) and a pressure relief assembly, wherein the urine drainage tube (4) is connected to the discharge end of the tube body (1), the tube body (1) is provided with a three-way tube (2), a pressure relief assembly is provided between the three-way tube (2) and the urine drainage tube (4), the pressure relief assembly comprises a pressure relief valve (9) and a pressure monitoring tube (10) which are sequentially arranged on the outer wall of the tube body (1), the three-way tube (2) comprises a urinary catheter main tube, a urinary catheter side tube (7) and a switching valve (8), the urinary catheter main tube is arranged on one side of the tube body (1) close to the urine drainage tube (4) and both ends of the urinary catheter main tube are connected to the interior of the tube body (1), the urinary catheter side tube (7) is vertically arranged on the outer surface of the urinary catheter main tube, and the switching valve (8) is provided on the outer surface of the connection between the urinary catheter main tube and the urinary catheter side tube (7).

2. An improved urinary catheter according to claim 1, characterized in that: The pressure relief valve (9) and the pressure monitoring tube (10) are both connected to the pipe body (1), and the pressure monitoring tube (10) is externally connected to a pressure transducer that can be used to detect pipeline pressure.

3. The improved urinary catheter according to claim 1, characterized in that: One-way valves (18) are respectively arranged inside the three-way pipe (2) and inside the pipe body (1), and a bellows (12) is arranged on the pipe body (1).

4. The improved urinary catheter according to claim 1, characterized in that: The top cover of the urinary catheter side tube (7) is provided with a protective cap (13), and the connection between the bottom of the protective cap (13) and the inner wall of the urinary catheter side tube (7) is provided with a sealing plug (17).

5. The improved urinary catheter according to claim 1, characterized in that: An intubation tube (6) is arranged at one end of the tube body (1) away from the urine drainage tube (4), and a limiting air bag (5) is arranged on the tube body (1) at a position beside the intubation tube (6).

6. An improved urinary catheter according to claim 5, characterized in that: The end of the insertion tube (6) is a flexible arc protrusion, and the outer surface of the insertion tube (6) is formed with a plurality of diffusion holes (16) for facilitating the diffusion of urine.

7. The improved urinary catheter according to claim 5, characterized in that: The urine drainage tube (4) is provided with a Y-shaped airbag cavity (3) for communicating with the limiting airbag (5), and the Y-shaped airbag cavity (3) is provided with an injection valve (15).

8. The improved urinary catheter according to claim 1, characterized in that: The outer surface of the tube body (1) is provided with a reinforcing sleeve (19), and the inner wall of the tube body (1) is provided with a corrosion-resistant layer (20).

9. The improved urinary catheter according to claim 1, characterized in that: The material of the tube body (1) and the three-way tube (2) is silicone, and a sealing belt (14) is provided at the connection between the tube body (1) and the three-way tube (2).

10. The improved urinary catheter according to claim 1, characterized in that: A side branch attachment (11) is provided on the tube body (1) at a position close to the urine drainage tube (4), and a urinary catheter mark is provided on the side branch attachment (11).

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