Improved three-cavity catheter

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, and provides an improved three-cavity catheter which comprises a main catheter body, a drainage catheter, a flushing catheter and a filling catheter which are independent are arranged in the main catheter body, and a flushing hole and a liquid filling hole are sequentially formed in the position, close to the front end of the main catheter body, of the main catheter body; the guide head is provided with a urethral catheterization hole communicated with the urethral catheterization cavity; the tube connector comprises a liquid outlet connector communicated with the urethral catheterization cavity, a medicine injection connector communicated with the flushing cavity and a filling connector communicated with the filling cavity; the main balloon is communicated with the filling cavity channel through the liquid filling hole; the auxiliary balloon is arranged at the position close to the rear end of the main balloon body and communicated with the filling cavity so that the expansion state of the main balloon can be displayed synchronously. According to the improved three-cavity catheter provided by the utility model, the auxiliary balloon positioned outside is added, so that the water injection amount of the main balloon can be clearly and intuitively known, and the displacement phenomenon of the catheter caused by insufficient water injection and the discomfort phenomenon of a patient caused by excessive water injection are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to an improved three-lumen urinary catheter. Background Art

[0002] The three-chamber catheters currently on the market generally inject gas or sterile water into the balloon through the balloon cavity of the three-chamber catheter, so that the balloon expands and is stuck in the bladder as a whole, so as to avoid sliding or displacement during the use of the three-chamber catheter, thereby achieving the effect of catheter retention. However, since the balloon is located inside the bladder during the expansion process, the operator cannot accurately know the expansion state of the balloon in real time, and often there is too much inflation or water injection, resulting in excessive expansion of the balloon, causing discomfort to the patient, and too little inflation or water injection, resulting in insufficient expansion of the balloon, which cannot play a good card top effect. The three-chamber catheter has the phenomenon of sliding or displacement, requiring the operator to repeat the intubation, causing great discomfort to the patient; in addition, there are obvious differences in the corresponding water injection indicators for patients of different ages, and the existing three-chamber catheter cannot adaptively adjust the water injection amount according to the expansion state of the balloon, which is not convenient for the operator to perform water injection operations.

[0003] Therefore, it is necessary to design an improved three-lumen urinary catheter that can clearly and intuitively display the balloon expansion state and thereby determine the water injection amount. Summary of the invention

[0004] In order to solve the above technical problems, the utility model proposes an improved three-lumen urinary catheter. By adding an external auxiliary balloon, the water injection amount of the main balloon can be clearly and intuitively known, thereby avoiding the catheter displacement caused by insufficient water injection and the patient discomfort caused by excessive water injection.

[0005] The technical solution of the utility model is:

[0006] The utility model provides an improved three-chamber urinary catheter, comprising:

[0007] A main body, wherein independently spaced apart and distributed urinary catheterization channels, flushing channels, and filling channels are arranged inside the main body, and a flushing hole connected to the flushing channel and a filling hole connected to the filling channel are sequentially arranged near the front end of the main body;

[0008] A guide head, the guide head is arranged at the front end of the main pipe body and is provided with a urinary catheter hole connected to the urinary catheter cavity;

[0009] A tube interface, which is arranged at the rear end of the main tube body, and includes a liquid outlet interface connected to the urinary catheterization channel, a drug injection interface connected to the flushing channel, and a filling interface connected to the filling channel;

[0010] A main balloon, which is sleeved on the periphery of the main body and arranged opposite to the liquid filling hole, and is connected with the filling cavity through the liquid filling hole;

[0011] The auxiliary balloon is arranged near the rear end of the main body and is connected with the filling cavity to synchronously display the expansion state of the main balloon.

[0012] Preferably, the auxiliary balloon is sleeved on the outer periphery of the filling interface, the filling interface is provided with a connecting hole connected to the filling cavity, and the auxiliary balloon is connected to the filling cavity through the connecting hole.

[0013] Preferably, the auxiliary balloon is sleeved on the main body near the tube interface, the main body is provided with a connecting hole connected to the filling cavity, and the auxiliary balloon is connected to the filling cavity through the connecting hole.

[0014] Preferably, a plurality of the communicating holes are provided and are evenly spaced apart along the circumferential direction.

[0015] Preferably, the expansion pressure of the secondary balloon is the same as the expansion pressure of the main balloon.

[0016] Preferably, the urinary catheter cavity is a columnar channel coaxially arranged with the main tube;

[0017] The flushing cavity and the filling cavity are annular channels coaxially arranged with the urinary catheter cavity, and the filling cavity is located at the outermost periphery.

[0018] Preferably, a plurality of the flushing holes, the liquid filling holes and the urinary catheter holes are provided and are evenly spaced and distributed along the circumferential direction.

[0019] Preferably, a one-way valve and / or a plug cover is provided at the end of the medicine injection interface, and a water injection hard valve is provided at the end of the filling interface.

[0020] Preferably, the guide head and the main pipe body are an integral structure, and the pipe interface and the main pipe body are an integral structure.

[0021] Preferably, the main tube is a silicone tube, the guide head is a silicone guide head, and the main balloon and the auxiliary balloon are silicone balloons.

[0022] Compared with the prior art, the utility model has the following advantages and effects:

[0023] (1) A secondary balloon is used which is located near the rear end of the main body and is connected to the filling cavity. After the three-lumen catheter is inserted as a whole, the main balloon is located inside the bladder and the secondary balloon is located outside the urethra. Since both the main balloon and the secondary balloon are connected to the filling cavity, after the filling cavity is filled with sterile water (such as saline), the main balloon and the secondary balloon expand synchronously, so that the operator can know the expansion state of the main balloon according to the expansion state of the external secondary balloon, so as to know the amount of water injected clearly and intuitively, avoid insufficient or excessive water injection, and ensure that the balloon is properly expanded to play a good fixing effect;

[0024] (2) The catheterization channel, flushing channel, and filling channel are coaxially and independently spaced. The catheterization channel is a columnar channel, and the flushing channel and filling channel are annular channels. The structural design of the multi-layer annular channel can increase the flow area of ​​the channel, thereby increasing the instantaneous flow rate of the channel, thereby improving the urine drainage effect, the flushing and injection effect during the flushing process, and the efficiency of balloon water injection and drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the improved three-lumen urinary catheter in Example 1 of the utility model;

[0026] Figure 2 It is a schematic diagram of the structure of part of the front end of the improved three-lumen urinary catheter in Example 1 of the utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the front end of the improved three-lumen urinary catheter in Example 1 of the utility model;

[0028] Figure 4 This is a schematic structural diagram of the improved three-lumen urinary catheter in Example 2 of the utility model.

[0029] Figure numerals: 1. main body; 11. catheterization cavity; 12. flushing cavity; 13. filling cavity; 14. flushing hole; 2. guide head; 21. catheterization hole; 3. tube interface; 31. liquid outlet interface; 32. injection interface; 33. filling interface; 4. main balloon; 41. filling hole; 5. auxiliary balloon; 51. connecting hole. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the present invention is now further described in conjunction with specific implementation methods.

[0031] Embodiment 1:

[0032] like Figure 1~Figure 3As shown, the utility model provides an improved three-chamber urinary catheter, which includes a main body 1, a guide head 2 arranged at the front end of the main body 1, a tube interface 3 arranged at the rear end of the main body 1, a main balloon 4 near the front end of the main body 1, and a secondary balloon 5 near the rear end of the main body 1.

[0033] refer to Figure 3 As shown, the main pipe body 1 is provided with independently spaced apart urinary catheterization cavity 11, flushing cavity 12, and filling cavity 13, and the main pipe body 1 is provided with flushing holes 14 connected with the flushing cavity 12 and filling holes 41 connected with the filling cavity 13 in sequence near the front end thereof, and two flushing holes 14 are provided and symmetrically distributed about the axis of the main pipe body 1, and four filling holes 41 are provided and evenly spaced apart along the circumferential direction.

[0034] like Figure 3 As shown, the catheter cavity 11 is a columnar channel coaxially arranged with the main body 1, the flushing cavity 12 and the filling cavity 13 are annular channels coaxially arranged with the catheter cavity 11, and the filling cavity 13 is located at the outermost periphery. The columnar catheter cavity 11 greatly increases the flow rate of the urine drainage channel and effectively reduces the phenomenon of channel blockage. The flushing cavity 12 and the filling cavity 13 with the coaxial annular structure effectively increase the instantaneous flow rate of the cavity, improve the flushing flow rate and the flushing and injection effect, as well as the efficiency of the balloon water injection and the stability of the balloon after expansion.

[0035] Combination Figure 2 , Figure 3 As shown, the guide head 2 is arranged at the front end of the main pipe body 1, and the guide head 2 is provided with a urinary catheter hole 21 connected to the urinary catheter cavity 11, and four urinary catheter holes 21 are provided and evenly spaced along the circumferential direction.

[0036] Optionally, in some embodiments, the guide head 2 is connected to the main pipe body 1 in an integrated structure.

[0037] like Figure 1 As shown, the tube interface 3 is arranged at the rear end of the main body 1. Specifically, the tube interface 3 includes a liquid outlet interface 31 connected to the urinary catheterization cavity 11, a drug injection interface 32 connected to the flushing cavity 12, and a filling interface 33 connected to the filling cavity 13.

[0038] Optionally, in some embodiments, a one-way valve and / or a plug cover is provided at the end of the injection port 32 to prevent external infection and allow part of the urine to flow out through the flushing cavity 12 and the injection port 32 .

[0039] A hard water injection valve is provided at the end of the filling interface 33, and a soft water injection valve can also be provided at the end of the filling interface 33. The hard water injection valve is easier to operate and convenient to plug in than the soft water injection valve. It should be noted that the hard water injection valve and the soft water injection valve are both mature existing technologies in this field, and their specific structures will not be repeated here.

[0040] refer to Figure 1 , Figure 2 , Figure 3 As shown, the main balloon 4 is sleeved on the outer periphery of the main body 1 and fixedly connected thereto, and the main balloon 4 and the filling hole 41 are arranged relative to each other so as to realize the connection between the main balloon 4 and the filling cavity 13 through the filling hole 41; the auxiliary balloon 5 is arranged at a position close to the rear end of the main body 1, and the auxiliary balloon 5 is connected to the filling cavity 13 so as to synchronously display the expansion state of the main balloon 4. Specifically, the auxiliary balloon 5 is sleeved on the outer periphery of the filling interface 33, and the side tube wall of the filling interface 33 is provided with a connecting hole 51 connected to the filling cavity 13, and the auxiliary balloon 5 and the connecting hole 51 are arranged relative to each other so as to realize the connection between the auxiliary balloon 5 and the filling cavity 13 through the connecting hole 51.

[0041] The expansion pressure of the secondary balloon 5 is the same as that of the main balloon 4, that is, under the same pressure, the expansion coefficients of the main balloon 4 and the secondary balloon 5 are the same, so that the operator can clearly and intuitively know the expansion state of the main balloon 4 based on the expansion state of the external secondary balloon 5.

[0042] Four communicating holes 51 are provided and are evenly spaced along the circumferential direction to increase the flow rate of sterile water (such as physiological saline) flowing into the auxiliary balloon 5 through the filling cavity 13, thereby improving the efficiency of water injection or drainage.

[0043] The main body 1 is a silicone tube, the guide head 2 is a silicone guide head 2, and the main balloon 4 and the auxiliary balloon 5 are both silicone balloons. It should be noted that the above-mentioned silicones are all medical grade silicones.

[0044] Optionally, in some embodiments, an X-ray developing line is embedded in the outer wall of the main tube 1 so as to observe and know the real-time status of the patient through the developing equipment.

[0045] Embodiment 2:

[0046] For Example 2 of the utility model, Figure 4 Note that description of parts that are not different from those in Embodiment 1 will be omitted and will be given the same reference numerals.

[0047] like Figure 4As shown, the utility model relates to an improved three-chamber urinary catheter, wherein the auxiliary balloon 5 is sleeved on the main body 1 near the tube interface 3, the main body 1 is provided with a connecting hole 51 connected to the filling cavity 13, and the auxiliary balloon 5 and the connecting hole 51 are arranged opposite to each other, so as to realize the connection between the auxiliary balloon 5 and the filling cavity 13 through the connecting hole 51. There are four connecting holes 51, and they are evenly spaced and distributed along the circumferential direction with the axis of the main body 1 as the center.

[0048] The three-lumen urinary catheter in this embodiment sets the auxiliary balloon 5 at the rear end of the main body 1 close to the tube interface 3, which can reduce the space occupied by the auxiliary balloon 5 after expansion of the tube interface 3, avoiding obstruction and impact on urine drainage and collection and subsequent flushing and injection.

[0049] In summary, the improved three-lumen urinary catheter provided by the utility model can clearly and intuitively know the water injection amount of the main balloon by adding an external auxiliary balloon, thereby avoiding the displacement of the catheter caused by insufficient water injection and the discomfort of the patient caused by excessive water injection.

[0050] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An improved three-lumen urinary catheter, characterized in that: include: A main body (1), wherein the main body (1) is provided with a urinary catheterization channel (11), a flushing channel (12), and a filling channel (13) which are independently spaced apart from each other, and the main body (1) is provided with a flushing hole (14) connected to the flushing channel (12), and a filling hole (41) connected to the filling channel (13) in sequence near the front end thereof; A guide head (2), the guide head (2) being arranged at the front end of the main pipe body (1), and being provided with a urinary catheter hole (21) which is connected to the urinary catheter cavity (11); a tube interface (3), the tube interface (3) being arranged at the rear end of the main tube body (1), and comprising a liquid outlet interface (31) connected to the urinary catheter cavity (11), a drug injection interface (32) connected to the flushing cavity (12), and a filling interface (33) connected to the filling cavity (13); A main balloon (4), the main balloon (4) being sleeved on the outer periphery of the main body (1) and arranged opposite to the liquid filling hole (41), and being connected to the filling cavity (13) via the liquid filling hole (41); A secondary balloon (5), the secondary balloon (5) being arranged near the rear end of the main body (1) and being connected to the filling cavity (13) so as to synchronously display the expansion state of the primary balloon (4).

2. The improved three-lumen urinary catheter according to claim 1, characterized in that: The auxiliary balloon (5) is sleeved on the outer circumference of the filling interface (33); the filling interface (33) is provided with a communication hole (51) connected to the filling cavity (13); the auxiliary balloon (5) is connected to the filling cavity (13) through the communication hole (51).

3. The improved three-lumen urinary catheter according to claim 1, characterized in that: The auxiliary balloon (5) is sleeved on the main body (1) at a position close to the tube interface (3); the main body (1) is provided with a communication hole (51) connected to the filling cavity (13); the auxiliary balloon (5) is connected to the filling cavity (13) through the communication hole (51).

4. The improved three-lumen urinary catheter according to claim 2 or 3, characterized in that: A plurality of the communication holes (51) are provided, and are evenly spaced and distributed along the circumferential direction.

5. The improved three-lumen urinary catheter according to claim 1, characterized in that: The expansion pressure of the auxiliary balloon (5) is the same as the expansion pressure of the main balloon (4).

6. The improved three-lumen urinary catheter according to claim 1, characterized in that: The urinary catheter cavity (11) is a columnar channel coaxially arranged with the main tube (1); The flushing cavity (12) and the filling cavity (13) are annular channels arranged coaxially with the urinary catheter cavity (11), and the filling cavity (13) is located at the outermost periphery.

7. The improved three-lumen urinary catheter according to claim 1, characterized in that: The flushing holes (14), the liquid filling holes (41), and the urinary catheter holes (21) are all provided in a plurality and are evenly spaced and distributed along the circumferential direction.

8. The improved three-lumen urinary catheter according to claim 1, characterized in that: A one-way valve and / or a plug cover is provided at the end of the medicine injection interface (32), and a water injection hard valve is provided at the end of the filling interface (33).

9. The improved three-lumen urinary catheter according to claim 1, characterized in that: The guide head (2) and the main pipe body (1) are in an integrated structure, and the pipe interface (3) and the main pipe body (1) are in an integrated structure.

10. The improved three-lumen urinary catheter according to claim 1, characterized in that: The main tube (1) is a silicone tube, the guide head (2) is a silicone guide head (2), and the main balloon (4) and the auxiliary balloon (5) are silicone balloons.

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