Urethral catheterization device and abdominal pressure monitoring system

Abstract

The invention provides a urethral catheterization device and an abdominal pressure monitoring system. The urethral catheterization device comprises a catheter and a drainage bag used for collecting liquid in the catheter. A capillary tube to be connected to a pressure sensor is communicated with the catheter. A first control valve is disposed on the catheter and between the capillary tube and the drainage bag. A buffer sac is disposed on the capillary tube and close to the connection of the capillary tube with the catheter. The buffer sac disposed on the capillary tube effectively prevents urine in the catheter from being reversely sucked into the capillary tube, so that the urine is effectively prevented from flowing back to the sensor to disable the same, accuracy in urinary bladder pressure detected by the pressure sensor is guaranteed, pollution of the pressure sensor by the urine is also prevented and cross infection caused by the reuse of the sensor is avoided.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a catheterization device and an abdominal cavity pressure monitoring system. Background technique [0002] Under normal conditions, the average intra-abdominal pressure of the human body should be zero or close to zero, but in clinical practice, many diseases can cause intra-abdominal pressure to increase. The causes can be divided into acute factors and chronic factors. High expansion of abdominal organs, edema and exudation of intra-abdominal organs, intra-abdominal hemorrhage, use of intra-abdominal packing and other factors; chronic factors include tumor growth and other factors, continuous increase in intra-abdominal pressure can cause intra-abdominal hypertension, which in voiding disorders Patients, especially high-risk surgical patients with voiding disorders, usually have an incidence of 5% to 40%, and severe cases can lead to abdominal compartment syndrome. Abdominal com...

AI Technical Summary

Problems solved by technology

[0005] The problem with the above-mentioned monitoring system in clinical use is that although a capillary tube is used to connect the urinary catheter with the sensor, to avoid as far as possible the urine from flowing into the sensor to contaminate it, in order to realize the transmission of pressure, the pressure sensor 3 used to connect The capillary 32 is directly connected with the urination tube 22, and when the gas in the tube expands with heat and contracts with cold, or the external pressure increases due to the shock generated during use, or the pressure of urine increases and the gas in the capillary is compressed, the gas still exists. The chance and possibility of urine being sucked back into the capillary 32 (urine backflow), and once the urine flows from the capillary to the pressure sensor 3, it will lead to a decrease in sensing sensitivity or even failure, which not only directly affects the accuracy of the measured bladder pressure Sex, but also bring safety hazards to patients, in addition, the backflow of urine will contaminate the pressure sensor, easy to cause cross-infection

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