Urethral catheter for bladder perfusion

Abstract

The catheter comprises a ureter and a water injection pipe, one end of the ureter, which is placed into a human body, is provided with a urine conveying hole and an air bag, the air bag is communicated with one end of the water injection pipe, and the other end of the water injection pipe is connected with a water injection soft plug; the other end of the ureter is connected with a three-way valve, the three-way valve comprises a urine channel, a first injector connecting channel, a second injector connecting channel and a valve arranged in the center of a three-way valve body, and the valve switches any channel to be communicated with the ureter. According to the utility model, urine in the bladder of a bladder cancer patient can be guided and discharged, chemotherapy medicine infusion can be carried out on the bladder, and when chemotherapy infusion administration is carried out, the risk of needle pricking of personnel is avoided, the syringe does not need to be separated in the whole process, medicine waste is avoided, the curative effect is ensured, and meanwhile, environmental pollution caused by medicine overflow is also prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical equipment, concretely relates to a catheter for bladder perfusion. BACKGROUND

[0002] Bladder cancer perfusion chemotherapy is an important treatment method, which directly injects the chemotherapy drugs into the bladder, and makes the drugs remain in the bladder for a period of time, so as to kill the residual tumor cells and prevent recurrence. For bladder cancer perfusion chemotherapy drugs, the usual operation is to clamp the end of the urinary tube with hemostatic forceps, and then insert the needle into the urinary tube. In order to ensure that all the chemotherapy drugs in the urinary tube enter the bladder, it is necessary to separate the syringe and inject a certain amount of air. In this process, if the operation is not proper, the needle is easy to stab the medical staff, causing occupational exposure. In addition, when the syringe is separated, the chemotherapy drugs may also flow out of the urinary tube, causing waste of the chemotherapy drugs, and the chemotherapy drugs are toxic, so the drug overflow will also cause environmental pollution.

[0003] The patent with publication number CN204582111U discloses a catheter injection device, which comprises a catheter tube and a syringe connected with the catheter tube. The front end of the catheter tube is provided with a urine inlet, and the rear end of the catheter tube is provided with a urine outlet. The rear end of the catheter tube is provided with a syringe connector, which comprises a hollow hose connected with the catheter tube and a horn-shaped opening arranged at the end of the hollow hose. A pair of clamping strips are arranged in the hollow hose. The front end of the syringe is provided with a liquid injection pipe, and the front end of the liquid injection pipe is symmetrically provided with two connecting pieces. The connecting pieces are further provided with clamping grooves matched with the clamping strips. The patent only has one syringe connector, and when the bladder cancer chemotherapy perfusion is performed, the syringe needs to be separated twice to inject air to drive the drugs in the catheter into the bladder. When the syringe is separated, the chemotherapy drugs will leak from the syringe connector, causing waste of the drugs and environmental pollution. UTILITY MODEL CONTENT

[0004] The utility model discloses a catheter for bladder perfusion to solve the problem that the existing bladder perfusion operation is easy to cause needle stab injury and drug overflow.

[0005] The utility model discloses the technical scheme that adopts:

[0006] A catheter for bladder perfusion, which comprises a urinary tube and a water injection pipe. One end of the urinary tube is provided with a ureteral orifice and an air bag. The air bag is communicated with one end of the water injection pipe, and the other end of the water injection pipe is connected with a water injection soft plug. The other end of the urinary tube is connected with a three-way valve. The three-way valve comprises a urine channel, a syringe connection channel one, a syringe connection channel two and a valve arranged in the center of the three-way valve body. The valve switches any channel to communicate with the urinary tube.

[0007] Further, the urine channel is provided with a urine channel valve.

[0008] Further, the end of the urine channel, the first syringe connecting channel and the second syringe connecting channel is provided with a sealing cover.

[0009] Further, the diameter of the front end of the ureter implanted into the human body gradually decreases to a round head taper.

[0010] Further, the air bag capacity space is 5-10ml.

[0011] Further, the outer wall of the catheter is covered with a hydrophilic lubricating coating.

[0012] Further, the valve is provided with a knob which can rotate 360 degrees.

[0013] Further, the knob is in the shape of "T".

[0014] Further, when the shorter side of the "T" shaped knob of the valve is parallel to the ureter, the ureter is communicated with the first syringe connecting channel and the second syringe connecting channel, and is not communicated with the urine channel.

[0015] Further, when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction with the first syringe connecting channel, the ureter is communicated with the first syringe connecting channel and the urine channel, and is not communicated with the second syringe connecting channel; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction with the second syringe connecting channel, the ureter is communicated with the second syringe connecting channel and the urine channel, and is not communicated with the first syringe connecting channel.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] The present application can guide the urine in the bladder of the bladder cancer patient to be discharged, and can also perform chemotherapy drug perfusion on the bladder; when the chemotherapy perfusion is performed, only the valve needs to be adjusted, the drug is injected from the first syringe connecting channel, and after the drug injection is completed, the air is injected from the second syringe connecting channel by using another syringe, so that the drug in the catheter is injected into the bladder. The present application avoids the risk of needle stick injury of personnel, the syringe does not need to be separated in the whole process, drug waste is avoided, the curative effect is ensured, and environmental pollution caused by drug overflow is also prevented. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a catheter structure schematic diagram for bladder perfusion;

[0019] Figure 2 It is a catheter communication schematic diagram for bladder perfusion;

[0020] Figure 3Figure showing the structure of a catheter for bladder irrigation according to an embodiment of the present application;

[0021] Figure: 1, ureter; 2, water injection tube; 3, ureteral orifice; 4, air bag; 5, water injection hole; 6, water injection soft plug; 7, three-way valve; 8, syringe connection channel one; 9, syringe connection channel two; 10, urine channel; 11, urine channel valve; 12, sealing cap. DETAILED DESCRIPTION

[0022] To clearly illustrate the technical features of the present scheme, the present utility model is described in detail below through specific implementation manners, and in conjunction with the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other manners different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0023] Embodiment 1

[0024] As Figure 1As shown, the embodiment provides a catheter for bladder perfusion, comprising a ureter 1 and a water injection tube 2, one end of the ureter 1 placed in the human body is provided with a ureteral orifice 3 and an air bag 4. The diameter of the front end of the ureter 1 placed in the human body gradually decreases to form a round head taper, which facilitates insertion into the urethra, and a hydrophilic lubricating coating is applied to the outer wall of the catheter to reduce damage to the ureteral mucosa and discomfort to the patient during insertion. The air bag 4 is in communication with one end of the water injection tube 2, and the capacity of the air bag 4 after water injection is 5ml, so as to fix the catheter in the bladder. The other end of the water injection tube 2 of the catheter is connected with a water injection soft plug 6; the other end of the ureter 1 is connected with a three-way valve 7, the three-way valve 7 comprises a urine channel 10, a syringe connection channel one 8, a syringe connection channel two 9, and a valve placed in the center of the three-way valve body, the ends of the urine channel 10, the syringe connection channel one 8 and the syringe connection channel two 9 are provided with sealing covers 12, the valve is provided with a knob which can rotate 360°, the knob is "T" shaped, when the shorter side of the "T" shaped knob of the valve is parallel to the ureter 1, the ureter 1 is in communication with the syringe connection channel one 8 and the syringe connection channel two 9, and is not in communication with the urine channel 10; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction as the syringe connection channel one 8, the ureter 1 is in communication with the syringe connection channel one 8 and the urine channel 10, and is not in communication with the syringe connection channel two 9; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction as the syringe connection channel two 9, the ureter 1 is in communication with the syringe connection channel two 9 and the urine channel 10, and is not in communication with the syringe connection channel one 8.

[0025] When the catheter is used for catheterization, the catheter is first inserted into the bladder of the patient, sterile water for injection is injected into the water injection soft plug 6 through the syringe to make the air bag 4 swell, the catheter is fixed in the bladder, and then the "T" shaped knob is rotated to the position where the shorter side is parallel to the syringe connection channel one 8, at this time the urine in the bladder enters the ureter 1 from the ureteral orifice 3, flows through the three-way valve 7 and enters the urine collection bag from the urine channel 10.

[0026] Embodiment 2

[0027] As Figure 1 and Figure 2As shown, the embodiment provides a catheter for bladder perfusion, which comprises a ureter 1 and a water injection tube 2, and the ureter 1 is provided with a ureteral orifice 3 and an air bag 4 at one end inserted into the human body. The diameter of the front end of the ureter 1 inserted into the human body is gradually reduced in a round head taper shape, which is convenient for insertion into the urethra, and a hydrophilic lubricating coating is coated on the outer wall of the catheter to reduce the damage to the ureteral mucosa and the discomfort of the patient during insertion. The air bag 4 is in communication with one end of the water injection tube 2, and the capacity of the air bag 4 is 10ml after water injection, so as to fix the catheter in the bladder. The other end of the water injection tube 2 of the catheter is connected with a water injection soft plug 6; the other end of the ureter 1 is connected with a three-way valve 7, the three-way valve 7 comprises a urine channel 10, a first syringe connection channel 8, a second syringe connection channel 9, and a valve arranged in the center of the three-way valve body, the ends of the urine channel 10, the first syringe connection channel 8 and the second syringe connection channel 9 are provided with sealing covers 12, the valve is provided with a knob which can rotate 360°, the knob is in the shape of "T", when the shorter side of the "T" shaped knob of the valve is parallel to the ureter 1, the ureter 1 is in communication with the first syringe connection channel 8 and the second syringe connection channel 9, and is not in communication with the urine channel 10; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction as the first syringe connection channel 8, the ureter 1 is in communication with the first syringe connection channel 8 and the urine channel 10, and is not in communication with the second syringe connection channel 9; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction as the second syringe connection channel 9, the ureter 1 is in communication with the second syringe connection channel 9 and the urine channel 10, and is not in communication with the first syringe connection channel 8.

[0028] When the catheter for bladder perfusion provided by the embodiment is used, when bladder perfusion administration is needed, since the urine channel 10 is made of soft material, the channel can be closed by only clamping the urine channel 10 with a clamp, and at the same time, the "T" shaped knob is rotated to the position where the shorter side is parallel to the first syringe connection channel 8, at this time, the first syringe connection channel 8 is in communication with the ureter 1, and the chemotherapeutic drug is injected into the bladder through the syringe into the first syringe connection channel 8, after the drug injection is completed, there will be residual part of the drug liquid in the pipeline which does not enter the bladder, at this time, the "T" shaped knob is rotated to the position where the shorter side is parallel to the second syringe connection channel 9, and the air is injected into the ureter 1 through the syringe, so as to drive all the drug liquid into the bladder, thereby ensuring that the drug will not overflow, avoiding the waste of the drug and the environmental pollution, and the device does not need to use a needle to puncture when used, avoiding the risk of needle stick injury of personnel.

[0029] Embodiment 3

[0030] As Figure 3As shown, the embodiment provides a catheter for bladder perfusion, comprising a ureter 1 and a water injection tube 2, one end of the ureter 1 placed in the human body is provided with a ureteral orifice 3 and an air bag 4. The front end of the ureter 1 placed in the human body gradually reduces in diameter to form a round head taper, which is convenient for insertion into the urethra, and a hydrophilic lubricating coating is coated on the outer wall of the catheter to reduce damage to the ureteral mucosa and discomfort to the patient during insertion. The air bag 4 is in communication with one end of the water injection tube 2, and the capacity of the air bag 4 after water injection is 5ml, so as to fix the catheter in the bladder. The other end of the water injection tube 2 of the catheter is connected with a water injection soft plug 6; the other end of the ureter 1 is connected with a three-way valve 7, the three-way valve 7 comprises a urine channel 10, a first syringe connection channel 8, a second syringe connection channel 9, and a valve placed in the center of the three-way valve body, the ends of the urine channel 10, the first syringe connection channel 8 and the second syringe connection channel 9 are provided with sealing covers 12, the valve is provided with a knob which can rotate 360°, the knob is in the shape of "T", when the shorter side of the "T" shaped knob of the valve is parallel to the ureter 1, the ureter 1 is in communication with the first syringe connection channel 8 and the second syringe connection channel 9, and not in communication with the urine channel 10; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction as the first syringe connection channel 8, the ureter 1 is in communication with the first syringe connection channel 8 and the urine channel 10, and not in communication with the second syringe connection channel 9; when the shorter side of the "T" shaped knob of the valve is rotated to be in the same direction as the second syringe connection channel 9, the ureter 1 is in communication with the second syringe connection channel 9 and the urine channel 10, and not in communication with the first syringe connection channel 8.

[0031] Further, a urine channel valve 11 is arranged on the urine channel, which can be closed when drug perfusion is performed to prevent drug solution from flowing out of the urine channel 10.

[0032] When the catheter for bladder perfusion provided by the embodiment is used, when bladder perfusion is needed, the urine channel valve 11 is closed, and the "T" shaped knob is rotated to the position where the shorter side is parallel to the first syringe connection channel 8, at this time the first syringe connection channel 8 is in communication with the ureter 1, and the chemotherapy drug is injected into the bladder through the syringe into the first syringe connection channel 8. After the drug injection is completed, there will be residual part of the drug solution in the pipeline which does not enter the bladder, at this time, only need to rotate the "T" shaped knob to the position where the shorter side is parallel to the second syringe connection channel 9, and inject air into the ureter 1 through the syringe, so as to drive all the drug solution into the bladder, thereby ensuring that the drug will not overflow, avoiding waste of the drug and environmental pollution, and the device does not need to use a needle to puncture when used, avoiding the risk of needle stick injury of personnel.

[0033] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, no reference signs in the claims being regarded as limiting the claims concerned.

Claims

1. A urinary catheter for bladder irrigation, characterized by, The utility model discloses a ureteral catheter and injection tube, which comprises a ureteral catheter and an injection tube, one end of the ureteral catheter is provided with a ureteral orifice and an air bag, the air bag is communicated with one end of the injection tube, the other end of the injection tube is connected with an injection soft plug, the other end of the ureteral catheter is connected with a three-way valve, the three-way valve comprises a urine channel, an injector connecting channel one, an injector connecting channel two and a valve arranged in the center of the three-way valve body, the valve switches any channel to be communicated with the ureteral catheter.

2. The urinary catheter for bladder irrigation according to claim 1, wherein The urine channel is provided with a urine channel valve.

3. The urinary catheter for bladder irrigation according to claim 1, wherein The end of the urine channel, the injector connecting channel one and the injector connecting channel two is provided with a sealing cap.

4. The urinary catheter for bladder irrigation according to claim 1, wherein The diameter of the front end of the ureteral catheter gradually reduces to a round head taper.

5. The urinary catheter for bladder irrigation according to claim 1, wherein The air bag has a capacity of 5-10ml.

6. The urinary catheter for bladder irrigation according to claim 1, wherein The outer wall of the ureteral catheter is covered with a hydrophilic lubricating coating.

7. The urinary catheter for bladder irrigation according to claim 1, wherein The valve is provided with a knob that can rotate 360 degrees.

8. The urinary catheter for bladder irrigation according to claim 7, wherein The knob is in the shape of "T".

9. The urinary catheter for bladder irrigation according to claim 8, wherein When the shorter side of the "T"-shaped knob of the valve is parallel to the ureteral catheter, the ureteral catheter is communicated with the injector connecting channel one and the injector connecting channel two, and is not communicated with the urine channel.

10. The urinary catheter for bladder irrigation according to claim 8, wherein When the shorter side of the "T"-shaped knob of the valve is rotated to be in the same direction with the injector connecting channel one, the ureteral catheter is communicated with the injector connecting channel one and the urine channel, and is not communicated with the injector connecting channel two; when the shorter side of the "T"-shaped knob of the valve is rotated to be in the same direction with the injector connecting channel two, the ureteral catheter is communicated with the injector connecting channel two and the urine channel, and is not communicated with the injector connecting channel one.

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