Improved urinary catheter

Abstract

This utility model discloses an improved urinary catheter, including an inner tube, an outer tube, a main outlet connector, a water inlet connector, and a flushing and medication inlet connector. A water inlet channel is formed between the outer tube and the inner tube. The head end of the outer tube has a first balloon, which expands into a pear shape after water injection. This allows the head end of the first balloon to protrude beyond the head end of the outer tube, preventing the urinary outlet at the head end of the catheter from sucking onto the internal tissues of the bladder. Furthermore, the tail end of the first balloon forms a cone structure, which better blocks the bladder entrance, reducing the gap between the outer wall of the catheter and the urethra, preventing urine leakage. In addition, a second balloon can be provided on the outer tube, which, after expansion, compresses the urethra, further reducing the gap between the outer wall of the catheter and the urethra, and better preventing urine leakage.

Description

Technical Field

[0001] This utility model relates to the field of urinary catheter technology, and more specifically, to an improved urinary catheter. Background Technology

[0002] A urinary catheter (also known as a urinary tube) is a tube inserted into the bladder through the urethra to drain urine. Existing urinary catheters generally consist of a tube body and a connector. The tube body has an inflatable balloon (also known as a water balloon or hollow balloon), such as the urinary catheter with real-time feedback on its insertion status described in patent application number 202210466835.0. In use, after the tip of the catheter is inserted into the bladder, saline solution is injected to inflate the balloon, thus securing the catheter in the bladder. Urine then flows out of the body through a drain hole on the tube body.

[0003] However, existing urinary catheters have the following shortcomings: 1. The head of the catheter extends a certain distance into the balloon, and the urination hole located at the head of the catheter may suck up the internal tissues of the bladder; 2. A gap may form between the outer wall of the catheter and the urethra, causing urine leakage and infection. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide an improved urinary catheter with a double-balloon design that can reduce the gap between the outer wall of the catheter and the urethra and prevent urine leakage.

[0005] To achieve the above objectives, this utility model provides an improved urinary catheter, comprising an inner tube, an outer tube, a main outlet connector, a water inlet connector, and a flushing and medication inlet connector. The tail end of the inner tube is connected to the central pipe of the main outlet connector. The outer tube wraps around the inner tube, and its tail end is connected to the head end of the main outlet connector. The head end of the outer tube is connected to the head end of the inner tube. A water inlet channel is formed between the outer tube and the inner tube, and the tail end of the water inlet channel is connected to the central pipe of the water inlet connector located on one side of the main outlet connector. The outer tube has a first air bladder at its head end that is connected to the head end of the water injection channel. The first air bladder expands after being injected with water and forms a pear shape. The head end of the first air bladder protrudes from the head end of the outer tube and its tail end forms a cone structure. The outer tube has a second air bladder that is connected to the water injection channel and close to the first air bladder. The second air bladder expands after being injected with water and forms an elliptical shape. The flushing injection connector is connected to the other side of the main outlet connector. The central pipe of the flushing injection connector is connected to the central pipe of the main outlet connector.

[0006] Preferably, the distance between the first airbag and the second airbag is 1.5 to 4 cm.

[0007] Preferably, the outer tube is provided with a pressure-type switch buckle on the outside for flattening the outer tube and the inner tube to prevent urine from flowing.

[0008] Preferably, the pressure tube type switch buckle includes a hook portion, a first pressure tube portion, an arc-shaped elastic portion, and a second pressure tube portion. The hook portion is connected to one end of the first pressure tube portion and is perpendicular to it. One end of the arc-shaped elastic portion is connected to the other end of the first pressure tube portion. The second pressure tube portion is connected to the other end of the arc-shaped elastic portion. The other end of the second pressure tube portion can engage with the hook of the hook portion. The arc-shaped elastic portion and the hook portion are respectively provided with through holes. The first pressure tube portion and the second pressure tube portion can press the outer tube and the inner tube passing between them.

[0009] Preferably, the water injection connector is equipped with a one-way valve.

[0010] Preferably, the inlet of the flushing injection connector is provided with a plug that can be inserted and removed, and the plug is connected to the outside of the flushing injection connector via a belt and a hanging ring.

[0011] Preferably, the plug body includes an inner plug and an outer plug, the outer plug being located outside the inner plug, the inner plug being insertable into the central channel of the flushing injection connector, and the outer plug being located outside the flushing injection connector.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The structure of this utility model is simple and the design is reasonable. The head end of the outer tube is provided with a first air bladder. After the first air bladder is filled with water and expands, it can form a pear shape. In this way, the head end of the first air bladder protrudes from the head end of the outer tube, which can prevent the urinary tract at the head end of the urinary catheter from sucking the internal tissue of the bladder. Furthermore, the tail end of the first air bladder forms a cone structure, which can better block the entrance of the bladder, reduce the gap between the outer wall of the urinary catheter and the urethra, and prevent urine leakage.

[0014] 2. The outer tube of this utility model is also provided with a second air bladder, which can compress the urethra after expansion, further reducing the gap between the outer wall of the urethra and the urethra, and better preventing urine leakage. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the structure of the improved urinary catheter provided in this embodiment of the present invention (without expansion);

[0017] Figure 2 This is a cross-sectional view (after expansion) of the improved urinary catheter provided in this embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the pressure tube type switch buckle provided in this embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the plug body provided in an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Please refer to Figure 1 The present invention provides an improved urinary catheter, including an inner tube 1, an outer tube 2, a main outlet connector 3, a water inlet connector 4, and a flushing and drug inlet connector 5. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0022] like Figure 2 As shown, the tail end of the inner tube 1 is connected to the central pipe of the main outlet connector 3. The outer tube 2 is wrapped around the outside of the inner tube 1. The tail end of the outer tube 2 is connected to the head end of the main outlet connector 3. The head end of the outer tube 2 is connected to the head end of the inner tube 1. A water injection channel 6 is formed between the outer tube 2 and the inner tube 1. The tail end of the water injection channel 6 is connected to the central pipe of the water injection connector 4 connected to one side of the main outlet connector 3.

[0023] like Figure 1 and Figure 2 As shown, the head end of the outer tube 2 is provided with a first airbag 7 that is connected to the head end of the water injection channel 6. The first airbag 7 is made of the same material as the outer tube, and the thickness of the first airbag 7 is thinner than the thickness of other parts of the outer tube 2, which facilitates the expansion of the first airbag 7.

[0024] After the first air bladder 7 expands with water, it can form a pear shape. At this time, the head end of the first air bladder 7 protrudes from the head end of the outer tube 2. This can prevent the urinary tract at the head end of the urinary catheter from sucking onto the internal tissue of the bladder. The tail end of the first air bladder 7 forms a cone structure, which can be inserted into the bladder entrance. It can better fit and block the bladder entrance, reduce the gap between the outer wall of the urinary catheter and the urethra, and prevent urine leakage.

[0025] like Figure 1 and Figure 2 As shown, the outer tube 2 is provided with a second airbag 8 that is connected to the water injection channel 6 and close to the first airbag 7. The second airbag 8 is made of the same material as the outer tube, and the thickness of the second airbag 8 is thinner than the thickness of other parts of the outer tube 2, which facilitates the expansion of the second airbag 8. In specific manufacturing, the distance between the first airbag 7 and the second airbag 8 can preferably be set to 1.5 to 4 cm.

[0026] After being inflated with water, the second airbag 8 can form an oval shape. The second airbag 8 is located inside the urethra. After being inflated with water, it can squeeze the urethra, further reducing the gap between the outer wall of the urethra and the urethra, and better preventing urine leakage.

[0027] like Figure 1 and Figure 2 As shown, the flushing injection connector 5 is connected to the other side of the main outlet connector 3, and the central pipe of the flushing injection connector 5 is connected to the central pipe of the main outlet connector 3.

[0028] like Figure 1 and Figure 3 As shown, the outer tube 2 is provided with a pressure-type switch buckle 9 for flattening the outer tube 2 and the inner tube 1 to prevent urine from flowing. Specifically, the pressure-type switch buckle 9 may include a hook portion 91, a first pressure tube portion 92, an arc-shaped elastic portion 93, and a second pressure tube portion 94. The hook portion 91 is connected to one end of the first pressure tube portion 92 and is perpendicular to it. One end of the arc-shaped elastic portion 93 is connected to the other end of the first pressure tube portion 92. The second pressure tube portion 94 is connected to the other end of the arc-shaped elastic portion 93. The other end of the second pressure tube portion 94 can engage with the hook of the hook portion 91. The arc-shaped elastic portion 93 and the hook portion 91 are respectively provided with through holes 95. The first pressure tube portion 92 and the second pressure tube portion 94 can press the outer tube 2 and the inner tube 1 that pass between them tightly.

[0029] like Figure 1 As shown, a one-way valve 10 can also be provided on the water injection connector 4. This one-way valve can be set as a common water injection hard valve.

[0030] like Figure 1 and Figure 4As shown, the inlet of the flushing injection connector 5 may also be provided with a removable plug 11. The plug 11 is connected to the outside of the flushing injection connector 5 via a belt 12 and a hanging ring 13. Preferably, the plug 11 may include an inner plug 111 and an outer plug 112. The outer plug 112 is located outside the inner plug 111. The inner plug 111 can be inserted into the central pipe of the flushing injection connector 5, and the outer plug 112 is located outside the flushing injection connector 5.

[0031] In addition, depending on actual needs, in other embodiments, the outer tube 2 or the inner tube 1 may also be provided with blue or other colored imaging lines (ink lines) that extend along the entire urinary catheter.

[0032] During operation, the catheter can be inserted into the bladder first, and then a first rated volume of saline solution can be injected into the water inlet connector 4. At this time, the saline solution is injected into the first air bladder 7 through the water inlet channel 6, causing the first air bladder 7 to inflate. When a second rated volume of saline solution is injected into the water inlet connector 4, the second air bladder 8 will also inflate.

[0033] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An improved urinary catheter, characterized by: The device includes an inner tube, an outer tube, a main outlet connector, a water injection connector, and a flushing and injection connector. The tail end of the inner tube is connected to the central pipe of the main outlet connector. The outer tube wraps around the inner tube, and its tail end is connected to the head end of the main outlet connector. The head end of the outer tube is connected to the head end of the inner tube. A water injection channel is formed between the outer tube and the inner tube. The tail end of the water injection channel is connected to the central pipe of the water injection connector connected to one side of the main outlet connector. The head end of the outer tube has a first air bladder connected to the head end of the water injection channel. The first air bladder expands after water injection and forms a pear shape. The head end of the first air bladder protrudes from the head end of the outer tube, and its tail end forms a cone structure. The outer tube has a second air bladder connected to the water injection channel and close to the first air bladder. The second air bladder expands after water injection and forms an elliptical shape. The flushing and injection connector is connected to the other side of the main outlet connector, and its central pipe is connected to the central pipe of the main outlet connector.

2. The improved urinary catheter as claimed in claim 1, wherein: The distance between the first airbag and the second airbag is 1.5 to 4 cm.

3. The improved urinary catheter according to claim 1, characterized in that: The outer tube is equipped with a pressure-type switch buckle on the outside to flatten the outer tube and inner tube so that urine cannot flow.

4. The improved urinary catheter according to claim 3, characterized in that: The pressure tube type switch buckle includes a hook part, a first pressure tube part, an arc-shaped elastic part, and a second pressure tube part. The hook part is connected to one end of the first pressure tube part and is perpendicular to it. One end of the arc-shaped elastic part is connected to the other end of the first pressure tube part. The second pressure tube part is connected to the other end of the arc-shaped elastic part. The other end of the second pressure tube part can engage with the hook of the hook part. The arc-shaped elastic part and the hook part are respectively provided with through holes. The first pressure tube part and the second pressure tube part can press the outer tube and the inner tube passing between them tightly.

5. The improved urinary catheter according to claim 1, characterized in that: The water injection connector is equipped with a one-way valve.

6. The improved urinary catheter according to claim 1, characterized in that: The inlet of the flushing injection connector is provided with a plug that can be inserted and removed. The plug is connected to the outside of the flushing injection connector via a belt and a hanging ring.

7. A modified urinary catheter according to claim 6, characterized in that: The plug body includes an inner plug and an outer plug, the outer plug being located outside the inner plug, the inner plug being able to be inserted into the central pipe of the flushing injection connector, and the outer plug being located outside the flushing injection connector.

Images