CN219043047U - Catheter with prevent backward flow structure - Google Patents
Catheter with prevent backward flow structure Download PDFInfo
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- CN219043047U CN219043047U CN202222708166.1U CN202222708166U CN219043047U CN 219043047 U CN219043047 U CN 219043047U CN 202222708166 U CN202222708166 U CN 202222708166U CN 219043047 U CN219043047 U CN 219043047U
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Abstract
The utility model discloses a catheter with a reflux preventing structure, which comprises a catheter main body, wherein a connecting pipe is fixedly connected to the catheter main body, a one-way mechanism is arranged in an inner cavity at one end of the catheter main body, the one-way mechanism comprises a valve, a limiting block is arranged at one side of the valve, a plurality of through holes are formed in the limiting block at equal intervals, and a fixing rod is fixed at one end of the limiting block. According to the catheter, urine in the inner cavity of the catheter main body flows towards the valve through the inner cavity of the through hole, the urine extrudes and expands one side of the valve, the urine flows out of the middle part of the valve membrane, when the urine flows to the limiting block from the valve membrane, the urine extrudes the other side of the valve, the inner wall of the valve is attached to the outer wall of the limiting block, the inner wall of the opening is attached to the outer wall of the fixing rod, the urine cannot flow into the inner cavity of the through hole, the urine cannot flow back into the catheter, and the urinary tract infection caused by the backflow of the urine is prevented.
Description
Technical Field
The utility model relates to the field of catheters, in particular to a catheter with a backflow prevention structure.
Background
The catheter is a pipeline made of natural rubber, silicon rubber or polyvinyl chloride, can be inserted into the bladder through the urethra so as to drain urine, and after the catheter is inserted into the bladder, an air bag is arranged near the head end of the catheter to fix the catheter and remain in the bladder, so that the catheter is not easy to fall off, and the drainage tube is connected with a urine bag to collect urine.
At present, the catheter used clinically is usually in a common lumen type, and when the height of the far-end urine bag exceeds that of the near-end urine tube in the clinical use process, urine in the urine bag enters the catheter again to cause the urine to flow back to the urine tube or the urinary bladder, so that the risk of urinary tract infection is increased.
Disclosure of Invention
The present utility model is directed to a catheter with an anti-reflux structure, which solves the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the catheter with the anti-reflux structure comprises a catheter main body, wherein a connecting pipe is fixedly connected with the catheter main body and used for connecting an external drainage bag;
a one-way mechanism is arranged in the inner cavity at one end of the catheter main body and used for preventing urine in the inner cavity of the catheter main body from flowing back;
the one-way mechanism comprises a valve, one end of the valve is fixedly connected with the inner wall of the catheter main body, a limiting block is arranged on one side of the valve, a plurality of through holes are formed in the limiting block in an annular array at equal intervals, and one end of the limiting block is fixedly connected with a fixing rod.
Preferably, the outer wall of stopper one end is fixedly connected with the inner wall of catheter main part, the one end of dead lever is connected with the inner chamber slip interlude of valve, the one end of dead lever is fixedly interlude and is connected with the fixed block.
Preferably, one end of the connecting pipe is fixedly connected with a one-way valve in a penetrating way, and the other end of the connecting pipe is fixedly connected with a connecting port.
Preferably, an air inlet pipe is arranged in the inner cavity of the catheter main body, one end of the air inlet pipe is fixedly connected with the side wall of one end of the catheter main body in a penetrating mode, and one end of the air inlet pipe is fixedly connected with an air inlet.
Preferably, the other end of the catheter main body is provided with a balloon, and the inner cavity of the balloon is fixedly connected with the other end of the air inlet pipe in a penetrating and inserting mode.
Preferably, the other end of the limiting block is arranged in the inner cavity of the valve, the valve membrane is arranged in a horn shape, and the limiting block is arranged in a circular truncated cone shape.
The utility model has the technical effects and advantages that:
(1) According to the utility model, by means of the arrangement mode that the movable valve, the limiting block and the through hole are matched, urine in the inner cavity of the catheter main body flows towards the movable valve through the inner cavity of the through hole, the urine extrudes and expands one side of the movable valve, the urine flows out of the middle part of the movable valve, when the urine flows towards the limiting block from the movable valve, the urine extrudes the other side of the movable valve, so that the inner wall of the movable valve is attached to the outer wall of the limiting block, the inner wall of the opening is attached to the outer wall of the fixing rod, the urine cannot flow into the inner cavity of the through hole, the urine cannot flow back into the catheter, and the urinary tract infection caused by the backflow of the urine is prevented;
(2) According to the utility model, by means of the arrangement mode that the connecting pipe and the one-way valve are matched, urine in the inner cavity of the catheter main body flows into the connecting pipe through opening the one-way valve, the urine is discharged, and when the one-way valve is closed, the urine cannot enter the connecting pipe, so that the drainage bag can be replaced conveniently.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic view of the structure of the catheter body of the present utility model in front cross-section.
FIG. 3 is a schematic view of a front cross-sectional structure of a stopper according to the present utility model.
In the figure: 1. a catheter body; 2. a connecting pipe; 3. a unidirectional mechanism; 31. a valve; 32. a limiting block; 33. a through hole; 34. a fixed rod; 4. a fixed block; 5. a one-way valve; 6. a connection port; 7. an air inlet pipe; 8. an air inlet; 9. a balloon.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a catheter with a reflux preventing structure as shown in figures 1-3, which comprises a catheter main body 1, wherein one end of the catheter main body 1 is inserted into the bladder of a patient, and is used for draining urine in the bladder, so that the patient can urinate conveniently, a connecting pipe 2 is fixedly connected with the catheter main body 1, and is used for connecting an external drainage bag, and the connecting pipe 2 is fixedly connected with the other end of the catheter main body 1, and is used for guiding the urine flowing in the inner cavity of the catheter main body 1 into the drainage bag;
the inner cavity at one end of the catheter main body 1 is provided with the one-way mechanism 3 which is used for preventing urine in the inner cavity of the catheter main body 1 from flowing back, preventing the urine from flowing back into the catheter main body 1 and the bladder by the drainage bag and avoiding the infection of a urinary tract;
the unidirectional mechanism 3 comprises a valve flap 31, the valve flap 31 is made of elastic materials and can deform to a certain extent, one end of the valve flap 31 is fixedly connected with the inner wall of the catheter main body 1, the valve flap 31 is in a horn shape and ensures unidirectional conduction of the inner cavity of the catheter main body 1, one side of the valve flap 31 is provided with a limiting block 32, the limiting block 32 is made of light materials and is used for limiting and blocking one side of the valve flap 31, a plurality of through holes 33 are formed in the limiting block 32 in an annular array at equal intervals, urine in the inner cavity of the catheter main body 1 circulates through the inner cavity of the through holes 33, one end of the limiting block 32 is fixedly connected with a fixing rod 34, the fixing rod 34 is arranged at one end of the valve flap 31 in an penetrating mode, when urine in the inner cavity of the catheter main body 1 flows from the inner cavity of the through hole 33 to the valve 31, the urine extrudes one side of the valve 31 to enable the valve 31 to deform and expand, the urine flows out of the middle of the valve 31, when the urine flows from the valve 31 to the limiting block 32, the urine extrudes and deforms the other side of the valve 31 to enable the inner wall of the valve 31 to be attached to the outer wall of the limiting block 32, the inner wall of the opening is attached to the outer wall of the fixed rod 34, the through hole 33 on the limiting block 32 is closed, the urine cannot flow into the inner cavity of the through hole 33, and backflow is prevented;
the outer wall at one end of the limiting block 32 is fixedly connected with the inner wall of the catheter main body 1, one end of the fixing rod 34 is connected with the inner cavity of the valve membrane 31 in a sliding and penetrating mode, the limiting block 32 is matched with the valve membrane 31, unidirectional circulation of urine in the inner cavity of the catheter main body 1 is guaranteed, one end of the fixing rod 34 is fixedly connected with the fixing block 4 in a penetrating mode, the fixing block 4 is in a round table shape, and when the urine is in reverse flow, the fixing block 4 blocks the urine flowing to a gap between the fixing rod 34 and the opening of the valve membrane 31, and the urine is prevented from flowing from the gap;
one end of the connecting pipe 2 is fixedly connected with a one-way valve 5 in a penetrating way, the one-way valve 5 is used for controlling the opening and closing of the connecting pipe 2, the other end of the connecting pipe 2 is fixedly connected with a connecting port 6, the connecting port 6 is in a conical shape and is used for connecting an external pipeline to guide out urine, the urine in the inner cavity of the catheter main body 1 flows into the connecting pipe 2 to be discharged by opening the one-way valve 5, and when the one-way valve 5 is closed, the urine cannot enter the connecting pipe 2, so that the drainage bag can be replaced conveniently;
an air inlet pipe 7 is arranged in the inner cavity of the catheter main body 1, one end of the air inlet pipe 7 is fixedly connected with the side wall of one end of the catheter main body 1 in a penetrating way, one end of the air inlet pipe 7 is arranged outside the catheter main body 1 and used for injecting air into the air inlet pipe 7, one end of the air inlet pipe 7 is fixedly connected with an air inlet 8, the air inlet 8 is used for connecting an external air pump, air is injected into the air inlet pipe 7, the other end of the catheter main body 1 is provided with a balloon 9, the balloon 9 is arranged in the bladder of a patient along with the penetrating of one end of the catheter main body 1, the inner cavity of the balloon 9 is fixedly connected with the other end of the air inlet pipe 7 in a penetrating way, the other end of the air inlet pipe 7 is arranged in the inner cavity of the balloon 9, and the air is injected into the inner cavity of the balloon 9 through the air inlet pipe 7, so that the balloon 9 is inflated, one end of the catheter main body 1 is clamped with the bladder of the patient, and stable connection of the catheter main body 1 and the bladder is ensured;
the other end of the limiting block 32 is arranged in the inner cavity of the valve 31, the valve 31 is arranged in a horn shape, and the limiting block 32 is arranged in a round table shape.
The working principle of the utility model is as follows: urine in the inner chamber of catheter main part 1 flows towards valve 31 through the inner chamber of through-hole 33, urine extrudes one side of valve 31 for valve 31 deforms and expands, urine flows by valve 31's middle part, when urine flows by valve 31 to stopper 32, urine extrudes the opposite side of valve 31, make valve 31's inner wall and stopper 32's outer wall laminate mutually, the inner wall of opening part and dead lever 34's outer wall laminate mutually, seal the through-hole 33 on stopper 32, make the urine unable inflow in the inner chamber of through-hole 33, prevent to take place to reflux, simultaneously through opening check valve 5, make the urine in the catheter main part 1 inner chamber flow into connecting pipe 2, discharge the urine, when closing check valve 5, make the urine unable entering connecting pipe 2, be convenient for change the drainage bag.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. A urinary catheter with anti-reflux structure, comprising:
a catheter main body (1), wherein a connecting pipe (2) is fixedly connected with the catheter main body (1) and is used for connecting an external drainage bag;
the method is characterized in that: a one-way mechanism (3) is arranged in the inner cavity at one end of the catheter main body (1) and used for preventing urine in the inner cavity of the catheter main body (1) from flowing back;
the unidirectional mechanism (3) comprises a valve (31), one end of the valve (31) is fixedly connected with the inner wall of the catheter main body (1), a limiting block (32) is arranged on one side of the valve (31), a plurality of through holes (33) are formed in the limiting block (32) in an annular array at equal intervals, and one end of the limiting block (32) is fixedly connected with a fixing rod (34).
2. Catheter with anti-reflux structure according to claim 1, characterized in that the outer wall of one end of the limiting block (32) is fixedly connected with the inner wall of the catheter main body (1), one end of the fixing rod (34) is slidingly and alternately connected with the inner cavity of the valve membrane (31), and one end of the fixing rod (34) is fixedly and alternately connected with the fixing block (4).
3. The catheter with the anti-reflux structure according to claim 1, wherein one end of the connecting tube (2) is fixedly connected with a one-way valve (5) in a penetrating way, and the other end of the connecting tube (2) is fixedly connected with a connecting port (6).
4. Catheter with anti-reflux structure according to claim 1, characterized in that an air inlet pipe (7) is arranged in the inner cavity of the catheter main body (1), one end of the air inlet pipe (7) is fixedly connected with the side wall of one end of the catheter main body (1) in a penetrating way, and one end of the air inlet pipe (7) is fixedly connected with an air inlet (8).
5. Catheter with anti-reflux structure according to claim 1, characterized in that the other end of the catheter body (1) is provided with a balloon (9), the inner cavity of the balloon (9) is fixedly connected with the other end of the air inlet pipe (7) in a penetrating way.
6. Catheter with anti-reflux structure according to claim 1, characterized in that the other end of the stopper (32) is arranged in the inner cavity of the valve (31), the valve (31) is arranged in a horn shape, and the stopper (32) is arranged in a truncated cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222708166.1U CN219043047U (en) | 2022-10-14 | 2022-10-14 | Catheter with prevent backward flow structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222708166.1U CN219043047U (en) | 2022-10-14 | 2022-10-14 | Catheter with prevent backward flow structure |
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| Publication Number | Publication Date |
|---|---|
| CN219043047U true CN219043047U (en) | 2023-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222708166.1U Active CN219043047U (en) | 2022-10-14 | 2022-10-14 | Catheter with prevent backward flow structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117339073A (en) * | 2023-12-05 | 2024-01-05 | 中国人民解放军总医院第二医学中心 | Respiratory restorer for severe medical department |
-
2022
- 2022-10-14 CN CN202222708166.1U patent/CN219043047U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117339073A (en) * | 2023-12-05 | 2024-01-05 | 中国人民解放军总医院第二医学中心 | Respiratory restorer for severe medical department |
| CN117339073B (en) * | 2023-12-05 | 2024-02-20 | 中国人民解放军总医院第二医学中心 | Respiratory restorer for severe medical department |
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