Ureteral catheter capable of dynamically monitoring pressure

Abstract

The invention relates to the field of ureters, and discloses a ureteral catheter capable of dynamically monitoring pressure, comprising: a flexible pigtail tube for supporting the whole device, the flexible pigtail tube is a hollow tube, the flexible pigtail tube is provided with a plurality of groups of catheterization holes, and the inner wall of the flexible pigtail tube is provided with a renal pelvis pressure sensor; the bladder end bent tube is used for extending into the bladder of the patient and connected with one end, far away from the pelvis pressure sensor, of the bendable pigtail tube, a tail tube hanging ring is arranged at the other end of the bendable pigtail tube, and a bladder pressure sensor is mounted on the inner wall of the bladder end bent tube; and the inner walls of the bladder end bent tube and the bendable pigtail tube are jointly provided with two groups of channels. By means of the bladder pressure sensor arranged in the bladder end bent pipe, bladder pressure can be monitored in real time and transmitted to terminal equipment such as a display screen through Bluetooth, and by monitoring the bladder pressure, a patient can be guided to judge whether urinary catheterization is needed to reduce the bladder pressure or not, and urine backflow to the pelvis is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ureters, in particular to a ureteral catheter capable of dynamically monitoring pressure. Background Art

[0002] Ureteral catheters are hollow tubes placed in the ureters to support, drain, and prevent postoperative ureteral adhesions and stenosis. They are widely used in endoscopic procedures such as kidney and ureteral stones, hydronephrosis, and kidney transplants, as well as in the adjunctive treatment of ureteral stenosis, obstruction, and damage caused by various benign and malignant lesions. To provide support and fixation, the two ends of a ureteral stent are typically curled into a round shape and inserted into the patient's renal pelvis and bladder, respectively. When the intra-pelvic pressure exceeds the intra-bladder pressure, urine in the renal pelvis flows from the renal pelvis to the bladder through the ureteral stent, thus providing drainage.

[0003] However, existing ureteral catheters cannot monitor bladder pressure and renal pelvic pressure in real time, making it difficult to detect early-stage lesions and changes in a patient's condition. Excessive bladder pressure can cause urine to reflux into the ureters and kidneys, leading to hydronephrosis, decreased renal function, and even renal failure. Long-term use of ureteral catheters can also cause urethral sphincter relaxation, resulting in urine leakage. Many critically ill patients experience significant abdominal distension and require indirect monitoring of their abdominal pressure by monitoring their bladder pressure. If poor ureteral drainage is not detected early, it can easily lead to excessive renal pelvic pressure, which can easily cause hydronephrosis, secondary fever, urosepsis, and renal failure. This not only delays early diagnosis and treatment, but also causes complications such as renal pelvic injury, rupture and bleeding, postoperative urosepsis, and perinephric fluid and hemorrhage. This delays treatment, increases patient trauma, increases treatment costs, and increases the difficulty and risk of surgery, significantly increasing the risk of renal failure and even life-threatening conditions. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a ureteral catheter that can dynamically monitor pressure, solving the problem that "existing ureteral catheters are unable to monitor bladder pressure and renal pelvis pressure in real time, and thus cannot detect patients' early lesions and changes in their condition early enough."

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A ureteral catheter capable of dynamically monitoring pressure, comprising: A flexible pigtail tube is used to support the entire device. The flexible pigtail tube is a hollow tube with multiple sets of urinary catheter holes. A renal pelvis pressure sensor is installed on the inner wall of the flexible pigtail tube. The bladder-end curved tube is used to extend into the patient's bladder and is connected to one end of the flexible pigtail tube away from the renal pelvis pressure sensor. The other end is provided with a tail tube ring. The bladder pressure sensor is installed on the inner wall of the bladder-end curved tube; The inner walls of the bladder-end curved tube and the flexible pigtail tube are jointly provided with two groups of channels, namely, an instrument cavity and a wire cavity. The inner wall of the wire cavity located at the bladder-end curved tube is installed with a switch, a flexible electronic module and a flexible battery.

[0006] Preferably, a guide wire channel entrance is provided at one end of the bendable pigtail tube away from the bladder end bend tube, and the guide wire channel entrance can facilitate the operator to insert the guide wire and the booster tube to guide the ureteral catheter into the patient's ureter.

[0007] Preferably, a sensor wire is provided on the inner wall of the wire cavity, and the bladder pressure sensor and the renal pelvis pressure sensor can be connected to each other through the sensor wire.

[0008] Preferably, the outer wall of the flexible pigtail tube is provided with a length mark, and the end of the bladder end bending tube away from the flexible pigtail tube is provided with a marking ring. The length mark and marking ring can facilitate the operator to judge the position and depth of the inserted catheter.

[0009] Preferably, the urinary catheter hole can be configured to have various shapes including circular and elliptical.

[0010] Preferably, the renal pelvis pressure sensor and bladder pressure sensor include but are not limited to hydraulic sensors and piezoelectric pressure sensors.

[0011] Preferably, the flexible electronic module includes but is not limited to a Bluetooth sensor.

[0012] Preferably, the material for making the flexible pigtail tube includes but is not limited to medical silicone.

[0013] The present invention provides a ureteral catheter capable of dynamically monitoring pressure, which has the following beneficial effects: 1. The present invention can monitor bladder pressure in real time through a bladder pressure sensor installed in the curved tube at the bladder end, and transmit it to terminal devices such as display screens via Bluetooth. By monitoring bladder pressure, the patient can be guided to determine whether catheterization is needed to reduce bladder pressure, reduce urine reflux into the renal pelvis, and reduce the risk of hydronephrosis, fever, and impaired renal function caused by urine reflux due to lower urinary tract obstruction.

[0014] 2. The present invention uses a renal pelvis pressure sensor installed on the bent tube at the renal end to monitor the pressure in the renal pelvis in real time and transmit it to terminal devices such as display screens via Bluetooth. By monitoring the changes in the renal pelvis pressure, it can provide an early warning of ureteral catheter obstruction before clinical symptoms appear. The catheter can be replaced or removed in a timely manner to reduce the risk of life-threatening renal function damage and secondary infection of hydronephrosis in patients, further reducing the overall treatment costs of such patients with tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a plan view of the overall device of the present invention; Figure 2 Schematic diagram of the positions of sections AA, BB, and CC of the present invention; Figure 3 It is an enlarged view of section AA of the present invention; Figure 4 is an enlarged view of section BB of the present invention; Figure 5 It is an enlarged view of section CC of the present invention.

[0016] Among them, 1. Flexible pigtail tube; 101. Instrument lumen; 102. Guidewire lumen; 2. Renal pelvis pressure sensor; 3. Guidewire channel entrance; 4. Sensor wire; 5. Bladder pressure sensor; 6. Switch; 7. Flexible electronic module; 8. Flexible battery; 9. Bladder end bending tube; 10. Tail tube; 11. Catheterization hole; 12. Marking ring; 13. Length mark; 14. Tail tube hanging ring. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example: Please see the attached Figure 1 - Attachment Figure 5The embodiment of the present invention provides a ureteral catheter capable of dynamically monitoring pressure, comprising: a flexible pigtail tube 1 and a bladder end curved tube 9. The flexible pigtail tube 1 is used to support the entire device. As the main structure of the catheter, it has a certain flexibility and can adapt to the physiological curvature of the ureter. At the same time, it has sufficient strength to maintain its own shape, so as to ensure that it can be stably placed in the body and provide a foundation for the installation and operation of other components. The flexible pigtail tube 1 is a hollow tube. The hollow structure is designed to achieve functions such as urine drainage, allowing urine to flow in the tube to avoid urine accumulation in the renal pelvis or ureter. The flexible pigtail tube 1 is provided with a catheter hole 1 1 and the number is multiple groups. The setting of multiple catheter holes 11 can increase the efficiency and flexibility of urine drainage. Even if some catheter holes are blocked, the other catheter holes can still play a role, ensuring the patency of drainage and preventing hydronephrosis and other conditions. The inner wall of the flexible pigtail tube 1 is installed with a renal pelvis pressure sensor 2. The renal pelvis pressure sensor 2 is installed on the inner side, which can more directly contact the environment in the renal pelvis through the catheter hole 11, thereby accurately sensing the pressure changes in the renal pelvis and providing a reliable data source for subsequent pressure monitoring; the bladder end curved tube 9 is used to extend into the patient's bladder and is interconnected with the end of the flexible pigtail tube 1 away from the renal pelvis pressure sensor 2. The shape is designed to better fit the physiological structure of the bladder, facilitate smooth insertion into the bladder and be stably placed in the bladder, reducing stimulation to the inner wall of the bladder. A tail tube ring 14 is provided at the other end of the bladder-end curved tube 9. The design of the tail tube ring 14 facilitates the doctor's operation when the catheter needs to be removed. The catheter can be removed from the body more easily and safely by clamping the ring with a tool. A bladder pressure sensor 5 is installed on the inner wall of the bladder-end curved tube 9. Similar to the renal pelvis pressure sensor 2, installing the bladder-end curved tube 9 on the inner wall can make it closer to the urine in the bladder, thereby accurately monitoring the pressure changes in the bladder, and the position of the inner wall is relatively concealed, which can reduce interference with the tissues in the bladder. Interference; The inner walls of the bladder end bending tube 9 and the flexible pigtail tube 1 are jointly provided with two groups of channels, namely the instrument cavity 101 and the wire cavity 102. The setting of two independent groups of channels can avoid mutual interference between instrument operation and wire transmission. The inner wall of the wire cavity 102 located at the bladder end bending tube 9 is equipped with a switch 6, a flexible electronic module 7 and a flexible battery 8. These electronic components are installed inside the wire cavity 102, which can protect them from direct erosion by urine, etc., and can facilitate their connection with components such as the bladder pressure sensor 9. At the same time, the flexible property enables them to adapt to the bending of the catheter without affecting the normal use of the catheter.

[0019] A guidewire channel entrance 3 is provided at one end of the flexible pigtail tube 1 away from the bladder end curved tube 9. The guidewire channel entrance 3 can facilitate the operator to insert the guide wire and the booster tube to introduce the ureteral catheter into the patient's ureter. The guide wire can guide the direction of the catheter, and the booster tube can provide thrust, so that the catheter can pass through the ureter more smoothly to the designated position, reducing the difficulty and risk during the insertion process.

[0020] A sensor wire 4 is provided on the inner wall of the wire cavity 102. The sensor wire 4 is arranged in the wire cavity and can be effectively protected to avoid damage from the outside world. At the same time, the stability of signal transmission is guaranteed. The bladder pressure sensor 5 and the renal pelvis pressure sensor 2 can be interconnected through the sensor wire 4. This connection method enables the two sensors to work together, transmit and process the pressure signals monitored by each through the wire, and realize synchronous monitoring of bladder and renal pelvis pressure.

[0021] The outer wall of the flexible pigtail tube 1 is provided with a length mark 13, which can help the doctor accurately judge the length of the catheter entering the body when inserting the catheter, and ensure that the position of the catheter meets the treatment requirements. The bladder end bending tube 9 is provided with a marking ring 12 at the end away from the flexible pigtail tube 1. The marking ring can be visualized in imaging examinations, which is convenient for doctors to determine the position of the catheter end and provide a reference for the positioning and operation of the catheter. The length mark 13 and the marking ring 12 can facilitate the operator to judge the position and depth of the inserted catheter. Through the cooperation of these two marks, the doctor can more accurately grasp the situation of the catheter in the body, improve the accuracy of the operation, and reduce complications caused by improper position.

[0022] The catheter hole 11 can be set to a variety of shapes including circular and elliptical. Catheter holes of different shapes can optimize the drainage effect of urine according to actual needs. For example, when the patient has viscous urine in the renal pelvis or the urine contains small stone fragments, the elliptical catheter hole has more advantages than the circular catheter hole. The renal pelvis pressure sensor 2 and the bladder pressure sensor 5 include but are not limited to hydraulic sensors and piezoelectric pressure sensors.

[0023] The flexible electronic module 7 includes but is not limited to Bluetooth sensors. Flexible electronic modules such as Bluetooth sensors have wireless transmission functions and can transmit the monitored pressure data to the terminal device outside the body in real time, making it convenient for doctors to check at any time. The flexible characteristics enable it to adapt to the bending of the catheter without damage. The manufacturing material of the flexible pigtail tube 1 includes but is not limited to medical silicone. Medical silicone has good biocompatibility and will not cause irritation or allergic reactions to human tissue. At the same time, it has a certain degree of flexibility and elasticity, and is suitable as a manufacturing material for in-vivo catheters.

[0024] Working principle: When in use, first start the system through the switch 6, and the flexible battery 8 powers the entire electronic components; the operator inserts the guide wire and the booster tube through the guide wire channel entrance 3, and places the renal end part of the flexible pigtail tube 1 into the renal pelvis, and extends the bladder end curved tube 9 into the bladder. During the process, the insertion position and depth are judged by the length mark 13 on the outer wall of the flexible pigtail tube 1 and the marking ring 12 at the end of the bladder end curved tube 9; after being in place, the renal pelvis pressure sensor 2 on the inner wall of the flexible pigtail tube 1 monitors the renal pelvis pressure in real time, and the bladder pressure sensor 5 on the inner wall of the bladder end curved tube 9 synchronously monitors the bladder pressure. Both transmit signals to the flexible electronic module 7 through the sensor wire 4 in the wire lumen 102, and the flexible electronic module 7 wirelessly transmits the signal to the external terminal for the operator to view in real time. At the same time, urine in the renal pelvis enters the instrument lumen 101 through the multiple sets of catheter holes 11 on the flexible pigtail tube 1, and is drained into the bladder through the bladder end curved tube 9 to complete the drainage. When removing the catheter, remove the catheter through the tail tube hanging ring 14 and turn off the switch 6.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ureteral catheter capable of dynamically monitoring pressure, characterized in that: include: A flexible pigtail tube (1) is used to support the entire device. The flexible pigtail tube (1) is a hollow tube. The flexible pigtail tube (1) is provided with multiple groups of urinary catheter holes (11). A renal pelvis pressure sensor (2) is installed on the inner wall of the flexible pigtail tube (1); The bladder-end curved tube (9) is used to extend into the patient's bladder and is connected to one end of the flexible pigtail tube (1) away from the renal pelvis pressure sensor (2). The other end is provided with a tail tube hanging ring (14). The bladder pressure sensor (5) is installed on the inner wall of the bladder-end curved tube (9); The inner walls of the bladder-end curved tube (9) and the flexible pigtail tube (1) are jointly provided with two groups of channels, namely, an instrument cavity (101) and a guide wire cavity (102). The guide wire cavity (102) is located on the inner wall of the portion of the bladder-end curved tube (9) and is provided with a switch (6), a flexible electronic module (7), and a flexible battery (8).

2. A ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The end of the bendable pigtail tube (1) away from the bladder end bend tube (9) is provided with a guide wire channel entrance (3), and the guide wire channel entrance (3) can facilitate the operator to insert the guide wire and the booster tube to guide the ureteral catheter into the patient's ureter.

3. A ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The inner wall of the wire cavity (102) is provided with a sensor wire (4), and the bladder pressure sensor (5) and the renal pelvis pressure sensor (2) can be connected to each other via the sensor wire (4).

4. A ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The outer wall of the flexible pigtail tube (1) is provided with a length mark (13), and the end of the bladder-end curved tube (9) away from the flexible pigtail tube (1) is provided with a marking ring (12). The length mark (13) and the marking ring (12) can facilitate an operator to judge the position and depth of the inserted catheter.

5. The ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The urinary catheter hole (11) can be configured in various shapes including circular and elliptical.

6. The ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The renal pelvis pressure sensor (2) and the bladder pressure sensor (5) include but are not limited to hydraulic sensors and piezoelectric pressure sensors.

7. The ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The flexible electronic module (7) includes but is not limited to a Bluetooth sensor.

8. The ureteral catheter capable of dynamically monitoring pressure according to claim 1, characterized in that: The material for making the bendable pigtail tube (1) includes but is not limited to medical silicone.

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