Bladder intra-abdominal pressure monitoring device

Abstract

The invention discloses a bladder intra-abdominal pressure monitoring device, and particularly relates to the technical field of bladder intra-abdominal pressure monitoring, the bladder intra-abdominal pressure monitoring device comprises a catheter and a monitoring assembly, the catheter is connected with a urine bag for draining urine, and a quantitative water injection assembly is arranged between the catheter and the monitoring assembly; the quantitative water injection assembly comprises a water injection box and a water injection pipe fixed to one side of the water injection box, and the catheter, the urine bag and the water injection pipe are communicated through a connecting mechanism. Quantitative water injection of the bladder is realized to improve the accuracy of a measurement result, and meanwhile, the amount of residual urine entering the bladder is greatly reduced, so that the probability of urinary system infection of a patient is reduced, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bladder intra-abdominal pressure monitoring, and in particular to a bladder intra-abdominal pressure monitoring device. Background Art

[0002] Intra-abdominal hypertension can cause physiological dysfunction in multiple organ systems, including the lungs, cardiovascular system, kidneys, and gastrointestinal tract. If not promptly addressed, it can lead to multiple organ dysfunction and even death. Its diagnosis relies heavily on dynamic measurement of intra-abdominal pressure. The World Association for Abdominal Compartment Syndrome has repeatedly emphasized that intra-abdominal pressure should be monitored in critically ill or trauma patients with any high-risk factors for IAH / ACS.

[0003] Moreover, patients who cannot tolerate early enteral nutrition support are also prone to abdominal organ edema, which then develops into intra-abdominal hypertension. When intestinal motility disorders occur, patients may experience constipation, nausea, vomiting, and abdominal distension, and the more obvious the abdominal distension, the higher the intra-abdominal pressure. If the intra-abdominal pressure continues to rise, it will lead to intra-abdominal hypertension, which will then progress to abdominal compartment syndrome, endangering the patient's life. Therefore, one of the principles that must be followed when giving enteral nutrition to patients during the acute reaction period is to ensure that there is no intra-abdominal hypertension. By monitoring intra-abdominal pressure, not only can IAH and ACS be detected early and the prognosis of patients be improved, but data statistics and analysis can also be performed on the tolerance of critically ill patients to early enteral nutrition support.

[0004] Currently, intra-abdominal pressure can be indirectly reflected by measuring the pressure within the bladder. To avoid the risk of urinary tract infection (UTI) caused by changing the patient's urinary catheter, a bladder intra-abdominal pressure monitoring device is available that combines the pressure monitoring module of an electrocardiogram (ECG) monitor. For example, the invention patent with publication number CN212816238U combines the CVP module of a bedside ECG monitor, a bladder pressure sensor, a urine bag, and a water injection bag to provide a bladder pressure measurement sensor kit based on the ECG monitor CVP measurement module. This kit allows for rapid monitoring using existing monitoring equipment, reducing costs.

[0005] However, in the prior art, the water injection bag, the urine bag and the urinary catheter through the bladder are connected through the urinary catheter tee. When the urine is drained, the urine in the bladder is introduced into the urine bag through the urinary catheter tee, and there will inevitably be urine residue in the urinary catheter tee; when the intra-abdominal pressure is monitored, when the water from the water injection device enters the bladder through the urinary catheter tee, the urine remaining in the urinary catheter tee will enter the bladder with the water, and it is easy for bacteria in the urine to enter the bladder, thereby increasing the probability of causing urinary tract infection. If the infection is not controlled in time, the bacteria may further ascend to the kidneys, causing pyelonephritis, leading to severe symptoms such as fever, low back pain, nausea, vomiting, etc., seriously affecting kidney function.

[0006] Furthermore, when measuring intra-abdominal pressure, the amount of water injected is typically quantitative. For example, prior art publication number CN206303882U discloses a bedside cystometry device that integrates both water injection and measurement. This precisely controls the amount of water injected into the bladder during measurement, enabling accurate and reliable results. However, since the water injected into the bladder during measurement carries residual urine from the urinary catheter tee into the bladder, this increases the amount of water injected into the bladder, potentially reducing measurement accuracy. Summary of the Invention

[0007] The purpose of the present invention is to provide a bladder intra-abdominal pressure monitoring device that can achieve quantitative water injection into the bladder to improve the accuracy of the measurement results, while greatly reducing the amount of residual urine entering the bladder, thereby reducing the probability of urinary tract infection in patients and improving safety.

[0008] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a bladder intra-abdominal pressure monitoring device, comprising a urinary catheter and a monitoring component, wherein the urinary catheter is connected to a urine bag for draining urine.

[0009] A quantitative water injection component is provided between the urinary catheter and the monitoring component. The quantitative water injection component includes a water injection box and a water injection pipe fixed on one side of the water injection box. The urinary catheter, urine bag and water injection pipe are connected by a connecting mechanism, which is used to quantitatively inject physiological saline into the patient's bladder for monitoring intra-abdominal pressure and improving the accuracy of the measurement results.

[0010] Preferably, a piston plate is slidingly provided in the water injection box, a push rod is fixed on the side of the piston plate away from the water injection pipe, the push rod extends out of the side of the water injection box away from the water injection pipe and is fixed with a handle, a valve is fixed on the water injection pipe, and pushing the handle drives the push rod and the piston plate to move to the left, so that the saline in the water injection box can be injected into the bladder.

[0011] Preferably, the device includes a three-way connector, and the three ends of the three-way connector are respectively provided with interface one, interface two, and interface three. The interface one is connected to the urinary catheter, the interface two is connected to the urine bag, and a valve four is fixed on the interface two. When draining urine, the valve four is opened, and the urine in the bladder is drained into the urine bag through the urinary catheter and the three-way connector.

[0012] Preferably, a connecting block is provided in the interface three, and an inner tube one is fixed in the connecting block. The inner tube one passes through the interface one of the three-way joint and extends into the interior of the urinary catheter. The inner tube one is located at one end of the urinary catheter and is provided with an elastic sheet for controlling the unidirectional flow of physiological saline in the inner tube one; the inner tube two is also fixed in the connecting block, and the inner tube two is arranged inside the three-way joint and close to the interface two.

[0013] Preferably, a connecting pipe 1 and a connecting pipe 2 respectively connected to the inner pipe 1 and the inner pipe 2 are fixed to one end of the connecting block away from the tee joint, and a valve 2 and a valve 3 are respectively fixed to the connecting pipe 1 and the connecting pipe 2.

[0014] Preferably, the ends of the connecting pipe 1 and the connecting pipe 2 away from the connecting block are connected to the same connecting pipe 3, and the water injection pipe is connected to the connecting pipe 3.

[0015] Preferably, the monitoring component includes a pressurizing component, an ECG monitor and a transducer. The pressurizing component and the ECG monitor are both connected to the transducer. The transducer is a small pressure sensor. The urinary catheter is connected to the CVP module of the ECG monitor through the transducer. The pressure sensor converts the pressure signal into an electrical signal, which is displayed as a continuous waveform and numerical value on the ECG monitor for monitoring the intra-abdominal pressure. This achieves the goal of not changing the urinary catheter and not introducing intra-abdominal pressure monitoring equipment. Only the ECG monitor pressure monitoring module is needed to continuously monitor the intra-bladder pressure. The device is suitable for various wards.

[0016] Preferably, the end of the transducer away from the pressurizing component and the electrocardiogram monitor is connected to the bottom end of the water injection box through a connecting pipe, and a valve five is fixed on the connecting pipe.

[0017] Preferably, the water injection pipe and the connecting pipe are connected through a connecting pipe, and a valve six is fixed on the connecting pipe. When monitoring the intra-abdominal pressure, valves three and four are closed to block the connection between the catheter and the urine bag. After the physiological saline in the pressurizing component fills the water injection box, a certain amount is injected into the bladder through the inner tube.

[0018] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0019] 1. The pressurizing component fills the transducer's tubing with saline, then fills the water injection box with saline, and then injects all the saline in the water injection box into the bladder. Because the internal volume of the water injection box is controllable, it can achieve quantitative water injection into the bladder, thereby improving the accuracy of the measurement results. At the same time, the saline entering the bladder does not pass through the three-way connector and the catheter, greatly reducing the amount of saline carried by the three-way connector and the amount of urine entering the bladder, thereby reducing the probability of urinary tract infection in patients.

[0020] 2. After the monitoring is completed, the liquid in the water injection box can be injected into the urine drainage line through the water injection tube to flush the urine drainage line. This can prevent the residual urine in the drainage line from flowing back into the bladder and reduce the probability of urinary tract infection in the patient, and can also prevent the urine drainage line from being blocked and affecting the urine drainage work;

[0021] 3. The present invention does not require replacement of urinary catheters or introduction of intra-abdominal pressure monitoring equipment. Only an electrocardiogram (ECG) monitor pressure monitoring module is required to continuously monitor intra-bladder pressure. The invention is applicable to various wards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall structural diagram of the present invention;

[0023] Figure 2 It is a partial cross-sectional view of the connecting mechanism of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0025] Figure 4 This is a structural diagram of the urinary catheter, quantitative water injection assembly and connecting mechanism of the present invention;

[0026] Figure 5 It is a cross-sectional view of the quantitative water injection assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of physiological saline flowing into a urinary catheter according to the present invention;

[0028] Figure 7 This is a schematic diagram of the urine drainage pipeline for flushing with physiological saline according to the present invention.

[0029] Description of reference numerals:

[0030] 1. Catheter, 2. Quantitative water injection components;

[0031] 21 water filling box, 22 piston plate, 23 push rod, 24 handle, 25 water filling pipe, 26 valve 1;

[0032] 3 pressurized components, 4 ECG monitors, 5 transducers, 6 urine bags;

[0033] 7 connecting mechanism, 71 tee joint, 72 interface 1, 73 interface 2, 74 interface 3, 75 connecting block, 76 inner tube 1, 77 inner tube 2, 78 connecting tube 1, 79 connecting tube 2, 710 valve 2, 711 valve 3, 712 connecting tube 3, 713 valve 4;

[0034] 8 connecting pipe, 9 valve five, 10 connecting pipe, 11 valve six. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] The present invention provides Figure 1 The device for monitoring bladder and intra-abdominal pressure shown includes a urinary catheter 1 and a monitoring assembly. The urinary catheter 1 is connected to a urine bag 6 for draining urine.

[0037] The monitoring assembly includes a pressurizing assembly 3, an electrocardiogram monitor 4, and a transducer 5, both of which are connected to the transducer 5. The electrocardiogram monitor 4 injects physiological saline into the bladder. The transducer 5 is typically a small pressure sensor, which connects the bladder to the CVP module of the electrocardiogram monitor. The pressure sensor converts the pressure signal into an electrical signal, which is displayed as a continuous waveform and numerical value on the electrocardiogram monitor 4. The reading is taken at the end of the patient's exhalation. The measurement result is in mmHg. The IAP value is accurately recorded on the nursing record sheet once every hour. The normal IAP for critically ill patients is 5-7 mmHg. IAP>12 mmHg indicates intra-abdominal hypertension. When IAP>12 mmHg, the doctor should be notified and monitoring should be strengthened. The present invention can continuously monitor the intra-bladder pressure without changing the urinary catheter or introducing intra-abdominal pressure monitoring equipment. Only the electrocardiogram monitor pressure monitoring module is required, and the patient is suitable for various wards.

[0038] like Figure 1-Figure 7 As shown, a quantitative water injection component 2 is provided between the urinary catheter 1 and the monitoring component, and the quantitative water injection component 2 includes a water injection box 21 and a water injection pipe 25 fixed to one side of the water injection box 21. The urinary catheter 1, the urine bag 6 and the water injection pipe 25 are connected by a connecting mechanism 7. A piston plate 22 is slidingly provided in the water injection box 21, and a push rod 23 is fixed on the side of the piston plate 22 away from the water injection pipe 25. The push rod 23 extends out of the side of the water injection box 21 away from the water injection pipe 25 and is fixed with a handle 24. A valve 26 is fixed on the water injection pipe 25 for quantitatively injecting physiological saline into the patient's bladder for monitoring intra-abdominal pressure.

[0039] The end of the transducer 5 away from the pressurizing component 3 and the electrocardiogram monitor 4 is connected to the bottom end of the water filling box 21 through a connecting pipe 8, and a valve five 9 is fixed on the connecting pipe 8. The physiological saline in the pressurizing component 3 flows into the water filling box 21 through the transducer 5. The water filling pipe 25 is connected to the connecting pipe 8 through a connecting pipe 10, and a valve six 11 is fixed on the connecting pipe 10.

[0040] Next, the connecting mechanism 7 includes a three-way connector 71, with a first port 72, a second port 73, and a third port 74 at each end. Port 1 72 is connected to the urinary catheter 1, and port 2 73 is connected to the urine bag 6. A fourth valve 713 is fixed to port 2 73. When draining urine, valve 4 713 opens, and urine in the bladder is drained into the urine bag 6 through the urinary catheter 1 and the three-way connector 71.

[0041] A connecting block 75 is provided within the interface 74. An inner tube 76 is fixed within the connecting block 75. The inner tube 76 passes through the interface 72 of the three-way connector 71 and extends into the interior of the urinary catheter 1. The inner tube 76 can pass through the drainage hole on the urinary catheter 1 and extend into the bladder (the urinary catheter 1 can have more than one drainage hole to prevent the inner tube 76 from completely blocking the drainage hole on the urinary catheter 1 when passing through the urinary catheter 1 and extending into the bladder). An elastic sheet is also provided within one end of the inner tube 76 located within the urinary catheter 1 to control the unidirectional flow of saline solution within the inner tube 76, so that the saline solution in the inner tube 76 can only flow out in one direction.

[0042] The elastic sheet is the sheet structure in the check valve. Many miniature check valves use elastic sheets (such as silicone or polymer films). When the liquid flows in the forward direction, the sheet is opened by pressure, and when it flows in the reverse direction, it is closed due to fluid pressure, thereby achieving unidirectional flow control. Its principle mainly relies on the synergistic effect of the elastic deformation of the material and the structural asymmetry. Specifically: when the liquid flows in the forward direction, the fluid pressure causes the elastic sheet to deform, forming a channel to allow the liquid to pass through (such as the duckbill valve principle). When it flows in the reverse direction, the fluid pressure will press the sheet to the sealing surface, using the material's rebound force to block the flow.

[0043] An inner tube 2 77 is also fixed in the connecting block 75. The inner tube 2 77 is arranged inside the tee joint 71 and close to the interface 2 73. The end of the connecting block 75 away from the tee joint 71 is fixed with a connecting tube 1 78 and a connecting tube 2 79 which are respectively connected to the inner tube 1 76 and the inner tube 2 77. Valve 2 710 and valve 3 711 are respectively fixed on the connecting tube 1 78 and the connecting tube 2 79. The ends of the connecting tube 1 78 and the connecting tube 2 79 away from the connecting block 75 are connected to the same connecting tube 3 712, and the water injection pipe 25 is connected to the connecting tube 3 712.

[0044] During use, the urinary catheter 1 is placed over the inner tube 1 76 , and the inner tube 1 76 is passed through the drainage hole on the urinary catheter 1 and extended out of the urinary catheter 1 . The urinary catheter 1 is then connected to the interface 1 72 of the three-way connector 71 , and then the inner tube 1 76 is inserted into the bladder along with the urinary catheter 1 .

[0045] When it is necessary to monitor the intra-abdominal pressure, valve three 711, valve four 713, and valve six 11 are closed to block the flow between the urinary catheter 1 and the urine bag 6. At this time, valve one 26, valve two 710, and valve five 9 are all open. Then, the pressurizing assembly 3 is used to fill the transducer 5 pipeline with physiological saline to ensure that the pipeline is unobstructed and to expel air. Then, valve one 26 is closed, and the physiological saline in the pressurizing assembly 3 is filled into the water filling box 21, and then valve five 9 is closed.

[0046] Then, open valve 1 26, push handle 24 to drive push rod 23 and piston plate 22 to move left, so that the saline in water injection box 21 is injected into the bladder through water injection pipe 25 - connecting pipe 3 712 - connecting pipe 1 78 - inner pipe 1 76, as shown in FIG. Figure 6 As shown ( Figure 6 The middle arrow indicates the flow path of the normal saline solution). Since the internal volume of the water injection box 21 is controllable, quantitative water injection (usually 25 ml of normal saline solution) can be achieved, thereby improving the accuracy of the measurement results.

[0047] Then, valve six 11 is opened. At this time, the end of the water injection tube 25 near the water injection box 21 is sealed by the piston plate 22, so that the intra-abdominal pressure is transmitted to the transducer 5 through the liquid in the bladder-inner tube 1 76-connecting tube 1 78-connecting tube 3 712-water injection tube 25-connecting tube 10-connecting tube 8 to monitor the intra-abdominal pressure. After the measurement is completed, the normal saline in the bladder can be drained into the urine bag 6 through the urinary catheter 1;

[0048] Since the saline entering the bladder does not pass through the three-way connector 71 and the urinary catheter 1, the amount of saline carrying urine in the three-way connector 71 and the urinary catheter 1 into the bladder is greatly reduced, thereby reducing the probability of urinary tract infection in patients.

[0049] When the urine drainage line needs to be flushed, just close valve 2 710, open valve 3 711 and valve 4 713, and inject the liquid in the water injection box 21 filled with liquid into the urine drainage line through the water injection pipe 25-connecting pipe 2 79-inner pipe 2 77-interface 2 73 to flush the urine drainage line, and the flushing water enters the urine bag 6. Figure 7 As shown ( Figure 7 The middle arrow indicates the liquid flow path), which can not only prevent the residual urine in the drainage tube from flowing back into the bladder and reduce the probability of urinary tract infection in patients, but also prevent the blockage of the urine drainage tube from affecting urine drainage work.

[0050] Finally, it should be noted that all valves in the present invention can be manually switched valves or electrically controlled electric valves as needed.

[0051] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A bladder and intra-abdominal pressure monitoring device, characterized in that: It comprises a urinary catheter (1) and a monitoring assembly, wherein the urinary catheter (1) is connected to a urine bag (6) for draining urine; A quantitative water injection assembly (2) is provided between the urinary catheter (1) and the monitoring assembly. The quantitative water injection assembly (2) comprises a water injection box (21) and a water injection pipe (25) fixed to one side of the water injection box (21). The urinary catheter (1), the urine bag (6) and the water injection pipe (25) are connected via a connecting mechanism (7) and are used for quantitatively injecting physiological saline into the patient's bladder for monitoring intra-abdominal pressure.

2. The bladder intra-abdominal pressure monitoring device according to claim 1, characterized in that: A piston plate (22) is slidably provided in the water injection box (21), a push rod (23) is fixed on the side of the piston plate (22) away from the water injection pipe (25), the push rod (23) extends out of the side of the water injection box (21) away from the water injection pipe (25) and is fixed with a handle (24), and a valve (26) is fixed on the water injection pipe (25).

3. The bladder intra-abdominal pressure monitoring device according to claim 1, characterized in that: The (7) comprises a three-way connector (71), wherein the three ends of the three-way connector (71) are respectively provided with an interface 1 (72), an interface 2 (73), and an interface 3 (74), wherein the interface 1 (72) is connected to the urinary catheter (1), the interface 2 (73) is connected to the urine bag (6), and a valve 4 (713) is fixed on the interface 2 (73); When draining urine, valve four (713) is opened, and urine in the bladder is drained into the urine bag (6) through the urinary catheter (1) and the three-way connector (71).

4. The bladder intra-abdominal pressure monitoring device according to claim 3, characterized in that: The interface three (74) is provided with a connecting block (75), and an inner tube one (76) is fixed in the connecting block (75). The inner tube one (76) passes through the interface one (72) of the three-way joint (71) and extends into the interior of the urinary catheter (1). The inner tube one (76) is located at one end of the urinary catheter (1) and is provided with an elastic sheet for controlling the unidirectional flow of physiological saline in the inner tube one (76); The connecting block (75) is also fixed with an inner tube 2 (77), and the inner tube 2 (77) is arranged inside the three-way joint (71) and close to the second interface (73).

5. The bladder intra-abdominal pressure monitoring device according to claim 4, characterized in that: A connecting pipe 1 (78) and a connecting pipe 2 (79) are fixed to one end of the connecting block (75) away from the three-way connector (71), and are connected to the inner pipe 1 (76) and the inner pipe 2 (77) respectively. A valve 2 (710) and a valve 3 (711) are fixed to the connecting pipe 1 (78) and the connecting pipe 2 (79), respectively.

6. The bladder intra-abdominal pressure monitoring device according to claim 5, characterized in that: The ends of the connecting pipe 1 (78) and the connecting pipe 2 (79) away from the connecting block (75) are connected to the same connecting pipe 3 (712), and the water injection pipe (25) is connected to the connecting pipe 3 (712).

7. The bladder intra-abdominal pressure monitoring device according to claim 1, characterized in that: The monitoring component comprises a pressurizing component (3), an electrocardiogram monitor (4) and a transducer (5), and the pressurizing component (3) and the electrocardiogram monitor (4) are both connected to the transducer (5).

8. The bladder intra-abdominal pressure monitoring device according to claim 7, characterized in that: One end of the transducer (5) away from the pressurizing component (3) and the electrocardiogram monitor (4) is connected to the bottom end of the water injection box (21) through a connecting pipe (8), and a valve five (9) is fixed on the connecting pipe (8).

9. The bladder intra-abdominal pressure monitoring device according to claim 8, characterized in that: The water injection pipe (25) is connected to the connecting pipe (8) through a connecting pipe (10), and a valve six (11) is fixed on the connecting pipe (10).

Images