Urethral catheter capable of measuring pressure of air bag

Abstract

The utility model relates to the technical field of medical instruments, in particular to a catheter capable of measuring pressure of an air bag, a first branch tube is arranged on one side of a liquid injection tube, a pressure measuring device is connected to one end, away from the liquid injection tube, of the first branch tube, a sliding block is slidably mounted in the pressure measuring tube in the length direction of the pressure measuring tube, and a first telescopic tube is connected between a first plugging block and the sliding block; a liquid through hole communicated with an inner cavity of the first telescopic pipe is formed in the first plugging block, one end of the first branch pipe is connected with the liquid through hole, and a spring used for pushing the sliding block to move in the direction close to the liquid through hole is arranged in the pressure measuring pipe; as the pressure in the air bag rises, more liquid gradually enters the first telescopic pipe, then the first telescopic pipe stretches and drives the sliding block to move downwards in the pressure measuring pipe, and medical staff can visually know the pressure in the air bag by observing the distance of the sliding block moving downwards in the pressure measuring pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a urinary catheter capable of measuring air bag pressure. Background Art

[0002] Currently, the types of catheters on the market are divided into single-lumen, double-lumen and triple-lumen balloon catheters. The balloon catheter has an inflatable balloon, which is usually located at the end of the catheter. When using a balloon catheter, nursing staff usually inject sterile saline or distilled water into the balloon to allow the balloon to be fixed in the patient's body and ensure that urine can be discharged smoothly. Only by ensuring that the injection volume is controlled within a reasonable range can the application effect of the balloon catheter be enhanced. However, in the actual nursing process, due to the influence of various factors, excessive injection volume often occurs. Once the injection volume is too large, the pressure in the balloon will increase, increasing the risk of balloon rupture. At the same time, if the injection volume is too large, it will also affect the contractility of the balloon to a certain extent, which will not only increase the difficulty of catheter removal, but also compress the catheter line, all of which may cause the balloon to rupture.

[0003] In the prior art, the utility model patent with application number CN202121993461.5 discloses an inflatable balloon catheter, wherein scale lines are provided on the catheter, an inflatable balloon is fixedly provided at the end of the catheter, the inflatable balloon is connected to an inflation channel, the inflation channel is fixed on the catheter, a one-way air inlet valve is fixedly provided at the air inlet of the inflation channel, an inflation device is provided at the air inlet of the inflation channel, and a pressure measuring air bag is also connected to the inflation channel, and the pressure measuring air bag is located between the inflatable air bag and the one-way air inlet valve.

[0004] The above-mentioned urinary catheter can judge the air pressure of the inflatable airbag by squeezing the pressure measuring airbag. However, judging the pressure of the inflatable airbag by this method depends heavily on the experience of medical staff, who cannot observe the pressure of the inflatable airbag intuitively, which is inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide a urinary catheter capable of measuring the pressure of an air bag, so as to observe the pressure of the air bag more intuitively and solve the defects mentioned in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A urinary catheter capable of measuring the airbag pressure, comprising a urinary catheter body, an airbag is provided on the urinary catheter body, a liquid injection tube with one end communicating with the airbag is provided on one side of the urinary catheter body, a liquid inlet one-way valve is installed at the other end of the liquid injection tube, a first branch pipe is provided on one side of the liquid injection tube, a pressure measuring device is connected to the end of the first branch pipe far away from the liquid injection tube, the pressure measuring device includes a pressure measuring tube in the shape of a circular tube, first and second blocking blocks are fixedly installed at both ends of the pressure measuring tube respectively, a slider is slidably installed in the pressure measuring tube along its length direction, a first telescopic tube is connected between the first blocking block and the slider, the first blocking block and the slider respectively block the two ports of the first telescopic tube, a liquid through hole communicating with the inner cavity of the first telescopic tube is provided on the first blocking block, one end of the first branch pipe is connected with the liquid through hole, and a spring for pushing the slider to move towards the direction close to the liquid through hole is provided in the pressure measuring tube.

[0008] As a further improvement, the pressure measuring tube is a transparent pressure measuring tube, and a pressure measuring scale line is provided on the outer side of the pressure measuring tube along its length direction.

[0009] As a further improvement, a second branch pipe is also provided on one side of the liquid injection tube, a pressure regulating device is connected to the end of the second branch pipe far away from the liquid injection tube, the pressure regulating device includes a pressure regulating tube in the shape of a circular tube, first and second end blocks are fixedly installed at both ends of the pressure regulating tube respectively, a sliding seat is slidably installed in the pressure regulating tube along its length direction, a second telescopic tube is connected between the first end block and the sliding seat, the first end block and the sliding seat respectively block the two ports of the second telescopic tube, a liquid inlet hole communicating with the inner cavity of the second telescopic tube is provided on the first end block, one end of the second branch pipe is connected with the liquid inlet hole, and an adjusting mechanism for driving the sliding seat to move is provided in the pressure regulating tube.

[0010] As a preferred technical solution, the adjusting mechanism includes a screw rod extending in the same direction as the pressure regulating tube, the screw rod is screwed on the second end block, one end of the screw rod is rotatably installed on the sliding seat, and the other end of the screw rod passes through the outer side of the pressure regulating tube and is fixedly installed with a knob.

[0011] As a further improvement, a distance measuring scale is provided on the outer side of the urinary catheter body along its length direction.

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

[0013] 1. A distance measuring scale is provided on the outer side of the urinary catheter body of the present application along its length direction, so that the catheterization personnel can more clearly observe the depth of insertion of the urinary catheter body into the patient's body;

[0014] 2. When the present application injects sterile normal saline or distilled water into the airbag, as the pressure in the airbag increases, more liquid gradually enters the first telescopic tube, and then the first telescopic tube extends and drives the slider to move downward in the pressure measuring tube. Medical staff can intuitively understand the pressure in the airbag by observing the distance that the slider moves downward in the pressure measuring tube;

[0015] 3. When medical staff accidentally inject too much liquid into the airbag in the present application, part of the liquid in the airbag can be sucked into the second telescopic tube until the pressure in the airbag drops to a reasonable range, so as to adjust the pressure in the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the pressure measuring device of the embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of the pressure regulating device of the embodiment of the present invention.

[0020] In the figure: 1 - catheter body; 2 - side hole; 3 - liquid outlet; 4 - ranging scale; 5 - airbag; 6 - liquid injection tube; 7 - one-way inlet valve; 8 - first branch pipe; 9 - pressure measuring device; 10 - pressure measuring tube; 11 - first plugging block; 12 - second plugging block; 13 - slider; 14 - first telescopic tube; 15 - liquid through hole; 16 - liquid through nozzle; 17 - spring; 18 - pressure measuring scale line; 19 - second branch pipe; 20 - pressure regulating device; 21 - pressure regulating tube; 22 - first end block; 23 - second end block; 24 - sliding seat; 25 - second telescopic tube; 26 - liquid inlet hole; 27 - liquid inlet nozzle; 28 - screw rod; 29 - knob. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] As shown Figures 1 to 3 in the figure, a urinary catheter capable of measuring the balloon pressure includes a urinary catheter body 1. A side hole 2 is provided on one side of the upper end of the urinary catheter body 1. A liquid outlet 3 is provided at the lower end of the urinary catheter body 1. The liquid outlet 3 is connected to a urine bag. A first fluid channel communicating the side hole 2 and the liquid outlet 3 is provided in the urinary catheter body 1. The upper end of the urinary catheter body 1 is inserted into the patient's body, so that urine flows through the side hole 2 and the first fluid channel to the liquid outlet 3 and is collected into the urine bag. In addition, a ranging scale 4 is provided on the outer side of the urinary catheter body 1 along its length direction, so that the catheterization personnel can more clearly observe the depth of the urinary catheter body 1 inserted into the patient's body, rather than simply judging by experience and technique.

[0023] A balloon 5 is provided at a position on the outer side of the upper part of the urinary catheter body 1. A liquid injection tube 6 with one end connected thereto is provided on one side of the lower end of the urinary catheter body 1. A second fluid channel communicating the balloon 5 and one end of the liquid injection tube 6 is provided in the urinary catheter body 1. The other end of the liquid injection tube 6 is provided with an inlet one-way valve 7 for conducting from the outside into the liquid injection tube 6. After the upper end of the urinary catheter body 1 together with the balloon 5 is placed into the patient's body, sterile normal saline or distilled water is injected into the balloon 5 through the inlet one-way valve 7 to enable the balloon to be fixed in the patient's body.

[0024] As shown Figure 1 and Figure 2As shown in the figure, a first branch pipe 8 is provided on one side of the liquid injection pipe 6, and one end of the first branch pipe 8 is connected to the liquid injection pipe 6. The end of the first branch pipe 8 far from the liquid injection pipe 6 is connected with a pressure measuring device 9. The pressure measuring device 9 includes a pressure measuring pipe 10 in the shape of a circular tube. A first sealing block 11 and a second sealing block 12 are respectively fixedly installed at the upper and lower ends of the pressure measuring pipe 10. The first sealing block 11 and the second sealing block 12 are respectively screwed on the ends of the pressure measuring pipe 10, or the first sealing block 11 and the second sealing block 12 are respectively fixed to the ends of the pressure measuring pipe 10 by bolts; A slider 13 is slidably installed in the pressure measuring pipe 10 along its length direction. A first telescopic pipe 14 is connected between the first sealing block 11 and the slider 13. The two ends of the first telescopic pipe 14 are respectively fixed to the first sealing block 11 and the slider 13 by bonding or by screws. The first sealing block 11 and the slider 13 respectively seal the two ports of the first telescopic pipe 14. The sides of the first sealing block 11 and the slider 13 close to each other are respectively provided with cylindrical first convex platforms. The two ends of the first telescopic pipe 14 are respectively hermetically sleeved outside the corresponding first convex platforms; A liquid passing hole 15 is vertically penetrated through the first sealing block 11 along the length direction of the pressure measuring pipe 10. One end of the liquid passing hole 15 communicates with the inner cavity of the first telescopic pipe 14. The end of the first branch pipe 8 far from the liquid injection pipe 6 is connected with the liquid passing hole 15. Specifically, a cylindrical liquid passing nozzle 16 is integrally formed at the upper end of the first sealing block 11. The liquid passing hole 15 penetrates upward through the top of the liquid passing nozzle 16. The end of the first branch pipe 8 far from the liquid injection pipe 6 is screwed on the outside of the liquid passing nozzle 16 or the end of the first branch pipe 8 far from the liquid injection pipe 6 is clamped on the outside of the liquid passing nozzle 16; A spring 17 for pushing the slider 13 to move upward and close to the liquid passing hole 15 is connected between the slider 13 and the second sealing block 12. In addition, a ventilation hole communicating the outside with the inner cavity of the pressure measuring pipe 10 is also provided on the second sealing block 12.

[0025] The first telescopic pipe 14 is communicated with the airbag 5 through the liquid passing hole 15, the first branch pipe 8, the liquid injection pipe 6, and the second fluid passage. When injecting sterile normal saline or distilled water into the airbag 5, as the pressure in the airbag 5 increases, more liquid gradually enters the first telescopic pipe 14. Then, the first telescopic pipe 14 extends and drives the slider 13 to move downward in the pressure measuring pipe 10. Medical staff can directly understand the pressure in the airbag by observing the distance that the slider 13 moves downward in the pressure measuring pipe 10, and the urinary catheter will not slip off due to too little liquid injection into the airbag 5, nor will the airbag 5 burst due to too much liquid injection into the airbag 5.

[0026] In order to further facilitate observing the distance that the slider 13 moves in the pressure measuring pipe 10, the pressure measuring pipe 10 is a transparent pressure measuring pipe 10, and a pressure measuring scale line 18 is provided on the outside of the pressure measuring pipe 10 along its length direction.

[0027] As Figure 1 and Figure 3As shown in the figure, in order to facilitate the adjustment of the pressure inside the airbag 5, a second branch pipe 19 is provided on one side of the liquid injection pipe 6, and one end of the second branch pipe 19 is connected to the liquid injection pipe 6. The end of the second branch pipe 19 away from the liquid injection pipe 6 is connected to a pressure regulating device 20. The pressure regulating device 20 includes a circular tubular pressure regulating pipe 21. The upper and lower ends of the pressure regulating pipe 21 are respectively fixedly installed with a first end block 22 and a second end block 23. The first end block 22 and the second end block 23 are respectively screwed onto the ends of the pressure regulating pipe 21, or the first end block 22 and the second end block 23 are respectively fixed to the ends of the pressure regulating pipe 21 by bolts. A sliding seat 24 is slidably installed in the pressure regulating pipe 21 along its length direction. A second telescopic pipe 25 is connected between the first end block 22 and the sliding seat 24. The two ends of the second telescopic pipe 25 are respectively fixed to the first end block 22 and the sliding seat 24 by gluing or by screws. The first end block 22 and the sliding seat 24 respectively seal the two ends of the second telescopic pipe 25. The sides of the first end block 22 and the sliding seat 24 close to each other are respectively provided with cylindrical second protrusions. The two ends of the second telescopic pipe 25 are respectively hermetically sleeved outside the corresponding second protrusions. The first end block 22 is provided with a liquid inlet hole 26 vertically penetrating along the length direction of the pressure regulating pipe 21. One end of the liquid inlet hole 26 communicates with the inner cavity of the second telescopic pipe 25. The end of the second branch pipe 19 away from the liquid injection pipe 6 is connected to the liquid inlet hole 26. Specifically, a cylindrical liquid inlet nozzle 27 is integrally formed at the upper end of the first end block 22. The liquid inlet hole 26 penetrates upward through the top of the liquid inlet nozzle 27. The end of the second branch pipe 19 away from the liquid injection pipe 6 is screwed outside the liquid inlet nozzle 27 or the end of the second branch pipe 19 away from the liquid injection pipe 6 is clamped outside the liquid inlet nozzle 27.

[0028] An adjusting mechanism for driving the sliding seat 24 to move is provided in the pressure regulating pipe 21. The adjusting mechanism includes a screw rod 28 extending in the same direction as the pressure regulating pipe 21. The screw rod 28 is screwed onto the second end block 23. The second end block 23 is provided with a threaded hole matching the screw rod 28. The upper end of the screw rod 28 is rotatably installed on the sliding seat 24 through a bearing. The lower end of the screw rod 28 passes through the outside of the pressure regulating pipe 21 and is fixedly installed with a knob 29.

[0029] The second telescopic pipe 25 is communicated with the airbag 5 through the liquid inlet hole 26, the second branch pipe 19, the liquid injection pipe 6, and the second fluid channel. When the medical staff accidentally injects too much liquid into the airbag 5, the screw rod 28 can be rotated in a specific direction to drive the sliding seat 24 to move downward along the pressure regulating pipe 21 away from the liquid inlet hole 26. Further, the sliding seat 24 drives the second telescopic pipe 25 to extend, so that part of the liquid in the airbag 5 is sucked into the second telescopic pipe 25 until the pressure in the airbag 5 drops to a reasonable range, thereby adjusting the pressure in the airbag 5 and further avoiding the rupture of the airbag 5 caused by injecting too much liquid into the airbag 5.

[0030] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A urinary catheter capable of measuring airbag pressure, comprising a urinary catheter body, an airbag being arranged on the urinary catheter body, an injection tube having one end connected to the airbag being arranged on one side of the urinary catheter body, and an inlet check valve being installed on the other end of the injection tube, characterized in that: A first branch pipe is provided on one side of the injection pipe, and a pressure measuring device is connected to an end of the first branch pipe away from the injection pipe. The pressure measuring device includes a circular tubular pressure measuring pipe, and a first blocking block and a second blocking block are fixedly installed at both ends of the pressure measuring pipe, respectively. A slider is slidably installed in the pressure measuring pipe along its length direction, and a first telescopic tube is connected between the first blocking block and the slider. The first blocking block and the slider respectively block the two ends of the first telescopic tube. The first blocking block is provided with a liquid through hole connected to the inner cavity of the first telescopic tube, one end of the first branch pipe is connected to the liquid through hole, and a spring is provided in the pressure measuring pipe for pushing the slider to move toward the direction close to the liquid through hole.

2. A urinary catheter capable of measuring balloon pressure as claimed in claim 1, characterized in that: The pressure measuring tube is a transparent pressure measuring tube, and the outer side of the pressure measuring tube is provided with pressure measuring scale lines arranged along the length direction of the pressure measuring tube.

3. A urinary catheter capable of measuring balloon pressure as claimed in claim 1, characterized in that: A second branch pipe is also provided on one side of the liquid injection pipe, and a pressure regulating device is connected to an end of the second branch pipe away from the liquid injection pipe. The pressure regulating device includes a circular tubular pressure regulating pipe, and a first end block and a second end block are fixedly installed at both ends of the pressure regulating pipe, respectively. A slide seat is slidably installed in the pressure regulating pipe along its length direction, and a second telescopic pipe is connected between the first end block and the slide seat. The first end block and the slide seat respectively block two ends of the second telescopic pipe. A liquid inlet hole connected to the inner cavity of the second telescopic pipe is provided on the first end block, and one end of the second branch pipe is connected to the liquid inlet hole. An adjusting mechanism for driving the slide seat to move is provided in the pressure regulating pipe.

4. A urinary catheter capable of measuring balloon pressure as claimed in claim 3, characterized in that: The adjusting mechanism comprises a screw extending in the same direction as the pressure regulating tube, the screw being screwed on the second end block, one end of the screw being rotatably mounted on the slide seat, and the other end of the screw passing through the outside of the pressure regulating tube and fixedly mounted with a knob.

5. A urinary catheter capable of measuring balloon pressure as claimed in claim 1, characterized in that: The outer side of the catheter body is provided with distance measuring scales arranged along the length direction thereof.

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