Urethral catheter capable of displaying pressure of air bag

By introducing a pressure sensor and alarm device into the urinary catheter, the problems of cumbersome operation and patient discomfort caused by traditional urinary catheter balloon pressure monitoring are solved. Real-time monitoring and alarm of urinary catheter balloon pressure are achieved, ensuring appropriate balloon pressure and preventing slippage.

CN224085805UActive Publication Date: 2026-04-07TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Traditional catheter balloon pressure monitoring is cumbersome to operate, cannot achieve real-time monitoring, and the pulling action can cause discomfort to the patient, making it impossible to objectively determine whether the balloon pressure is appropriate.

Method used

A catheter with a pressure sensor and an alarm light was designed. The catheter achieves real-time pressure monitoring through a liquid compression sensor inside the balloon and provides an alarm when the bladder pressure increases. The balloon is kept inflated by a piston and positioning components.

Benefits of technology

It enables real-time monitoring and alarm of catheter balloon pressure, avoiding the cumbersome operation and patient discomfort of traditional methods, ensuring appropriate balloon pressure, and preventing catheter slippage.

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Abstract

The utility model discloses a catheter capable of displaying air bag pressure, which comprises a main body unit and a liquid injection unit, the main body unit comprises a catheter, an air bag is fixed on the outer side, close to the front end, of the catheter, a barrel is fixed on the outer side, close to the rear end, of the catheter, and an alarm lamp is mounted on the barrel. A connecting pipe is fixed and communicated to the position, close to the rear end, of the catheter, the liquid injection unit comprises a hollow plate fixed in the catheter, a liquid storage barrel is fixed to the catheter and communicated with the hollow plate, an L-shaped pipe is fixed and communicated to one end of the hollow plate, and the end, away from the hollow plate, of the L-shaped pipe penetrates through the catheter and is communicated with the interior of the air bag. The air bag extends into the bladder of a patient, then the air bag is expanded, the expanded air bag plays a role in fixing the catheter in the bladder of the patient, when the pressure in the bladder is increased, the air bag is extruded, liquid in the air bag extrudes the pressure sensor, an alarm is given through the alarm lamp, and medical workers are reminded to check.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a catheter technical field especially, it relates to a kind of catheter of display air bag pressure. BACKGROUND

[0002] Catheter obstruction is a common problem in clinical, catheter obstruction not only can cause urine to stay in bladder, increase the risk of urinary tract infection, but also can cause bladder overdistension and damage, affect the normal function of bladder, serious time even can cause urine reflux, appear kidney infection and damage, and then develop into chronic kidney disease.

[0003] Intravesical hemorrhage, bladder stone and bladder spasm are important reasons for causing catheter obstruction, catheter is often easy to be blocked by blood clot, stone, spastic bladder mucosa, cause poor drainage, even catheter obstruction, and then appear bladder pressure abnormal increase.

[0004] To solve the above technical problem, the pressure situation in bladder needs to be monitored, traditional catheter air bag pressure monitoring can only be carried out by extracting injected sterile water for injection or pulling whether urine tube is out, suction operation is tedious, and real-time monitoring cannot be realized;Pulling action can cause patient discomfort even urine tube slippage, and air bag pressure whether appropriate cannot be objectively judged. UTILITY MODEL CONTENT

[0005] (I) utility model purpose

[0006] Therefore, the purpose of the utility model is to provide a catheter for displaying air bag pressure, which solves the technical problem that traditional catheter air bag pressure monitoring can only be carried out by extracting injected sterile water for injection or pulling whether urine tube is out, suction operation is tedious, and real-time monitoring cannot be realized;Pulling action can cause patient discomfort even urine tube slippage, and air bag pressure whether appropriate cannot be objectively judged.

[0007] (II) technical scheme

[0008] To achieve the above technical purpose, the utility model provides a kind of catheter for displaying air bag pressure:

[0009] It includes a main unit and an injection unit. The main unit includes a catheter, with an airbag fixed to the outer side of the catheter near its front end and a cylinder fixed to the outer side of the catheter near its rear end. An alarm light is installed on the cylinder. A connecting tube is fixed and connected to the catheter near its rear end. The injection unit includes a hollow plate fixed inside the catheter, with a reservoir fixed to the catheter and connected to the hollow plate. One end of the hollow plate is fixed and connected to an L-shaped tube, with the end of the L-shaped tube away from the hollow plate passing through the catheter and connecting to the inside of the airbag. A piston is slidably connected inside the reservoir. When the piston moves down, it squeezes the liquid in the hollow plate and the reservoir into the airbag. The reservoir is equipped with a positioning component for positioning the piston after it moves.

[0010] Preferably, a pressure sensor is installed on the catheter, and the pressure sensor is located inside the balloon.

[0011] Preferably, a U-shaped tube is fixed inside the catheter, and a wire is inserted inside the U-shaped tube. One end of the wire is connected to a pressure sensor, and the other end of the wire is connected to an alarm light.

[0012] Preferably, a piston rod is rotatably connected to the piston, and the piston rod passes through the liquid storage cylinder and slides inside the liquid storage cylinder. A pressure plate is fixed to the top of the piston rod, a column is fixed to the pressure plate, and a handle is fixed to the end of the column.

[0013] Preferably, a spring is sleeved on the outside of the piston rod, with one end of the spring abutting against the liquid storage cylinder and the other end of the spring abutting against the pressure plate.

[0014] Preferably, the positioning component includes two side plates fixed to the outer side plates of the pressure plate, the side plates having positioning holes, two L-shaped brackets fixed on the liquid storage cylinder, and positioning posts fixed on the L-shaped brackets, the positioning posts being able to be embedded in the positioning holes.

[0015] Preferably, the liquid storage cylinder has multiple vent holes.

[0016] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0017] 1. The balloon is inserted into the patient's bladder and then inflated. The inflated balloon serves to fix the urinary catheter in the patient's bladder. When the pressure in the bladder increases, it will squeeze the balloon, causing the liquid inside the balloon to squeeze the pressure sensor, which will trigger an alarm light to remind medical staff to check. This device can monitor in real time.

[0018] 2: When inflating the airbag, press the handle to move the column, piston rod, and piston. When the piston moves, it squeezes the liquid in the reservoir and hollow plate into the airbag, causing the airbag to inflate. Then, turn the handle to rotate the piston rod, pressure plate, and side plate, rotating the positioning hole until it coincides with the axis of the positioning column. Then, release the handle. Under the spring's rebound force, the positioning column is embedded in the positioning hole, that is, the position of the pressure plate and piston is fixed, thus keeping the airbag in an inflated state. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Fig. 1 A magnified view of a partial structure of a urinary catheter for displaying balloon pressure, provided for the present invention;

[0021] Fig. 2 An enlarged view of another working state of a partial structure of a urinary catheter that displays balloon pressure, provided by this utility model;

[0022] Fig. 3 A cross-sectional view of a urinary catheter for displaying balloon pressure provided by this utility model.

[0023] Figure Descriptions: 100, Main Unit; 101, Catheter; 102, Balloon; 103, Cylinder; 104, Alarm Light; 105, Connecting Pipe; 106, Pressure Sensor; 107, U-shaped Tube; 108, Wire; 200, Injection Unit; 201, Hollow Plate; 202, Liquid Storage Cylinder; 203, L-shaped Tube; 204, Piston; 205, Piston Rod; 206, Pressure Plate; 207, Spring; 208, Column; 209, Handle; 210, L-shaped Frame; 211, Positioning Column; 212, Side Plate; 213, Positioning Hole; 214, Vent Hole. Detailed Implementation

[0024] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0025] Reference Figs. 1-3:

[0026] As one embodiment of the present invention, a urinary catheter for displaying balloon pressure is provided, including a main body unit 100 and an injection unit 200;

[0027] The main unit 100 includes a urinary catheter 101, an airbag 102 is fixed to the outer side of the urinary catheter 101 near the front end, a cylinder 103 is fixed to the outer side of the urinary catheter 101 near the rear end, an alarm light 104 is installed on the cylinder 103, and a connecting tube 105 is fixed and connected to the urinary catheter 101 near the rear end.

[0028] The infusion unit 200 includes a hollow plate 201 fixed inside the catheter 101. A reservoir 202 is fixed on the catheter 101 and is connected to the hollow plate 201. One end of the hollow plate 201 is fixed and connected to an L-shaped tube 203. The end of the L-shaped tube 203 away from the hollow plate 201 passes through the catheter 101 and is connected to the inside of the balloon 102. A piston 204 is slidably connected inside the reservoir 202. When the piston 204 moves down, it squeezes the liquid in the hollow plate 201 and the reservoir 202 into the balloon 102. A positioning component is provided on the reservoir 202 for positioning the piston 204 after it moves.

[0029] In use, the front end of the catheter 101 is inserted into the bladder through the urethra, and the balloon 102 is also inserted into the bladder. The rear end of the catheter 101 remains outside the body and is connected to the urine bag. The catheter 101 is used to introduce flushing fluid into the bladder to flush it, and can also be used to drain urine or flushing fluid from the bladder into the urine bag outside the body.

[0030] The catheter 101 is equipped with a pressure sensor 106, which is located inside the balloon 102. A U-shaped tube 107 is fixed inside the catheter 101. A wire 108 is inserted inside the U-shaped tube 107, with one end of the wire 108 connected to the pressure sensor 106 and the other end of the wire 108 connected to the alarm light 104.

[0031] Furthermore, a piston rod 205 is rotatably connected to the piston 204, and the piston rod 205 passes through the liquid storage cylinder 202 and slides within the liquid storage cylinder 202. A pressure plate 206 is fixed to the top of the piston rod 205, and a column 208 is fixed to the pressure plate 206. A handle 209 is fixed to the end of the column 208. A spring 207 is sleeved on the outside of the piston rod 205, and one end of the spring 207 abuts against the liquid storage cylinder 202, while the other end of the spring 207 abuts against the pressure plate 206. The positioning assembly includes two side plates 212 fixed to the outside of the pressure plate 206. A positioning hole 213 is opened in the side plate 212. Two L-shaped brackets 210 are fixed on the liquid storage cylinder 202. A positioning post 211 is fixed on the L-shaped bracket 210. The positioning post 211 can be embedded in the positioning hole 213. Multiple vent holes 214 are opened in the liquid storage cylinder 202.

[0032] It should be noted that before inserting the airbag 102 into the bladder, the airbag 102 is empty and does not inflate. After the airbag 102 is inserted into the bladder, pressing the handle 209 moves the column 208, piston rod 205, and piston 204, causing the piston 204 to squeeze the liquid in the reservoir 202 and hollow plate 201 into the airbag 102, causing the airbag 102 to inflate. Then, rotating the handle 209 rotates the piston rod 205, pressure plate 206, and side plate 212, thus opening the positioning hole 2. 13. Rotate until it coincides with the axis of the positioning post 211, and then release the handle 209 so that the positioning post 211 is embedded in the positioning hole 213, that is, the pressure plate 206 is fixed, so that the air bag 102 is kept in an inflated state. The inflated air bag 102 not only serves to fix the urinary catheter 101 in the patient's bladder, but also squeezes the air bag 102 when the pressure in the bladder increases, causing the liquid in the air bag 102 to squeeze the pressure sensor 106, and alarming through the alarm light 104 to remind medical staff to check.

[0033] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A urinary catheter that displays balloon pressure, characterized in that, include: The main unit (100) includes a urinary catheter (101), an airbag (102) is fixed to the outer side of the urinary catheter (101) near the front end, a cylinder (103) is fixed to the outer side of the urinary catheter (101) near the rear end, an alarm light (104) is installed on the cylinder (103), and a connecting tube (105) is fixed and connected to the urinary catheter (101) near the rear end. The injection unit (200) includes a hollow plate (201) fixed inside a catheter (101). A reservoir (202) is fixed on the catheter (101) and the reservoir (202) is connected to the hollow plate (201). One end of the hollow plate (201) is fixed and connected to an L-shaped tube (203). The end of the L-shaped tube (203) away from the hollow plate (201) passes through the catheter (101) and is connected to the inside of the balloon (102). A piston (204) is slidably connected inside the reservoir (202). When the piston (204) moves down, it squeezes the liquid in the hollow plate (201) and the reservoir (202) into the balloon (102). The reservoir (202) is provided with a positioning component for positioning the piston (204) after it moves.

2. The urinary catheter for displaying balloon pressure according to claim 1, characterized in that, A pressure sensor (106) is installed on the catheter (101), and the pressure sensor (106) is located inside the balloon (102).

3. A urinary catheter for displaying balloon pressure according to claim 2, characterized in that, A U-shaped tube (107) is fixed inside the catheter (101), and a wire (108) is inserted inside the U-shaped tube (107). One end of the wire (108) is connected to the pressure sensor (106), and the other end of the wire (108) is connected to the alarm light (104).

4. A urinary catheter for displaying balloon pressure according to claim 1, characterized in that, A piston rod (205) is rotatably connected to the piston (204), and the piston rod (205) passes through the liquid storage cylinder (202) and slides inside the liquid storage cylinder (202). A pressure plate (206) is fixed to the top of the piston rod (205), and a column (208) is fixed on the pressure plate (206). A handle (209) is fixed to the end of the column (208).

5. A urinary catheter for displaying balloon pressure according to claim 4, characterized in that, A spring (207) is sleeved on the outside of the piston rod (205), and one end of the spring (207) abuts against the liquid storage cylinder (202), while the other end of the spring (207) abuts against the pressure plate (206).

6. A urinary catheter for displaying balloon pressure according to claim 4, characterized in that, The positioning assembly includes two side plates (212) fixed to the outer side of the pressure plate (206). The side plates (212) have positioning holes (213). Two L-shaped brackets (210) are fixed on the liquid storage cylinder (202). A positioning post (211) is fixed on the L-shaped bracket (210). The positioning post (211) can be embedded in the positioning hole (213).

7. A urinary catheter for displaying balloon pressure according to claim 1, characterized in that, The liquid storage cylinder (202) has multiple vent holes (214).