Anti-blocking urinary catheter device with alarm function

Abstract

The invention discloses an anti-blocking urinary catheter device with an alarm function, and belongs to the field of medical instruments, the anti-blocking urinary catheter device comprises a catheter body, and a urination port, a water injection end, a medicine injection end, a urinary catheterization port and a balloon which are arranged on the catheter body, a first sensor is arranged between the balloon and the water injection end, and a second sensor and an alarm are arranged behind the water injection end; and the alarm, the first sensor and the second sensor are controlled by external monitoring equipment. According to the anti-blocking catheter device with the alarm function, the blocking condition of the catheter body can be quickly and accurately pre-warned, medical staff are reminded to handle in time in a wireless transmission mode, and therefore the situation that the body of a patient is damaged due to a series of problems caused by catheter blocking is avoided. Besides, the medical staff can also regulate and control the pressure change early warning threshold value through external monitoring equipment according to the condition of the patient, and the pressure change is changed into the pressure lt in the bladder within a period of time; and an alarm is given only when the pressure in the pipe body exists, so that the application range of the device is wider.

Description

Technical Field

[0001] This invention relates to an anti-blockage catheter, and more particularly to an anti-blockage catheter device with an alarm function. Background Technology

[0002] Currently, urinary catheters are commonly used medical devices in clinical practice, widely applied for urine drainage in patients with postoperative urinary difficulties, coma, or intensive care. Their patency directly affects the patient's urinary system health and overall treatment safety. In clinical practice, catheter blockage has become a relatively common problem, and delayed detection of blockage often leads to a series of serious issues, especially posing a greater risk to specific populations.

[0003] For patients who are comatose, have impaired consciousness, or are unable to express themselves (such as those with traumatic brain injury or post-stroke), the identification of catheter obstruction relies entirely on the observation and judgment of nursing staff because they cannot actively complain of discomfort such as abdominal distension and lower abdominal pain. However, existing clinical observation methods have significant limitations: nursing staff usually make indirect judgments by observing changes in urine drainage rate, urine volume in the drainage bag, or by palpating the patient's lower abdomen for a feeling of bladder fullness. However, these methods are easily affected by various factors—for example, changes in patient position may cause temporary compression of the catheter, resulting in a short-term reduction in drainage, which can be easily confused with obstruction; and when the bladder is not noticed until it is full to a certain extent, the optimal treatment time has often been missed; at this point, significant harm has already been caused to the patient. Therefore, detecting catheter obstruction is crucial.

[0004] In addition to the above, there is a lack of targeted prevention and monitoring methods for common causes of urinary catheter obstruction (such as crystal deposition in urine, mucus blockage, and blockage by fragments after balloon rupture). While some studies have attempted to reduce crystal adhesion by optimizing catheter materials, they do not address the root cause of the problem—obstruction warning—and cannot intervene in a timely manner at the initial stage of obstruction, resulting in a still high incidence of obstruction-related adverse events in clinical practice. Therefore, developing a device that can monitor the patency of urinary catheters in real time and actively alert when obstruction risk occurs is of significant practical importance and clinical value for reducing the incidence of clinical complications, alleviating the burden on nursing staff, and ensuring patient safety. Summary of the Invention

[0005] The present invention aims to provide a catheter-prevention device with an alarm function to solve the problem that existing catheters cannot provide early warning of catheter blockage during use, thereby causing harm to patients.

[0006] To achieve the above objectives, the specific plan is as follows:

[0007] A device for preventing urinary catheter blockage with an alarm function includes a tube body and a urination port, a water injection end, a medication injection end, a catheter port, and a balloon disposed on the tube body. A first sensor is disposed between the balloon and the water injection end, and a second sensor and an alarm are disposed behind the water injection end. The alarm, the first sensor, and the second sensor are controlled by an external monitoring device.

[0008] Furthermore, the first and second sensors are miniature piezoresistive pressure sensors; the detection ends of the first and second sensors are embedded in the side wall of the tube between the balloon and the water injection end through medical-grade silicone seals; the alarm is installed close to the second sensor, and its alarm end and wireless transmission end protrude from the outer surface of the tube.

[0009] Furthermore, the real-time pressure data from the first and second sensors are transmitted to an external monitoring device via Bluetooth 5.0 wireless transmission technology, with a transmission interval of 1 second per transmission.

[0010] Furthermore, the alarm triggering methods of the alarm system include:

[0011] ① The alarm emits a buzzing sound of 80-100dB and an intermittent alert sound at a frequency of 1Hz;

[0012] ② The display screen of the external monitoring device flashes a red warning box, and simultaneously displays the current monitored bladder pressure P1, tubular pressure P2, and warning threshold ΔP;

[0013] ③ The terminal's built-in wireless module sends alarm text messages to the preset medical staff mobile APP.

[0014] Furthermore, the external monitoring device also includes a threshold memory function: the external monitoring device supports storing custom thresholds based on patient information.

[0015] Furthermore, the external monitoring equipment and alarms are equipped with an "intraoperative mode" function, which automatically filters out instantaneous pressure fluctuations caused by surgical procedures to avoid false alarms.

[0016] In summary, the present invention has the following advantages over the prior art:

[0017] The anti-blockage catheter device with alarm function provided by this invention can quickly and accurately warn of the blockage of the catheter and remind medical staff to deal with it in time through wireless transmission, thereby avoiding a series of problems caused by catheter blockage and harming the patient's body.

[0018] In addition, medical staff can adjust the pressure change warning threshold through external monitoring equipment according to the patient's condition, so that the alarm is triggered only when the pressure in the bladder is lower than the pressure in the tube for a period of time, thus broadening the application range of this device.

[0019] This device also provides a variety of alarm types to adapt to various scenarios during patient treatment and in the hospital. It can be set through external monitoring equipment to avoid false alarms that would increase the workload of medical staff. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 A schematic diagram of the overall structure of the anti-blockage catheter device with alarm function provided by the present invention;

[0022] Figure 2 This is a flowchart of the operation of an anti-clogging catheter device with an alarm function.

[0023] The above figures include the following reference numerals:

[0024] 1. Tube body; 2. Urinary outlet; 3. Water inlet; 4. Medication inlet; 5. Urinary catheter port; 6. Balloon; 7. First sensor; 8. Second sensor; 9. Alarm; 10. External monitoring equipment. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the present invention. As used herein, the singular form may also include the plural form unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0028] See Figure 1 and Figure 2 As shown, the present invention provides an anti-blockage catheter device with an alarm function. Similar to the prior art, the device includes a tube body 1 and a urination port 2, a water injection end 3, a medication injection end 4, a catheter port 5 and a balloon 6 disposed on the tube body 1. Unlike the prior art, a first sensor 7 is provided between the balloon 6 and the water injection end 3 or the medication injection end 4, and a second sensor 8 and an alarm 9 are provided behind the water injection end 3 or the medication injection end 4.

[0029] Because the pressure inside the bladder must be greater than the pressure inside the catheter body 1 during use to ensure smooth urine drainage, this invention includes a first sensor 7 located behind the balloon 6 to monitor the pressure inside the bladder; and a second sensor 8 located behind the water inlet 3 or the medication inlet 4 to monitor the pressure inside the catheter body 1. The pressure values ​​monitored by the first sensor 7 and the second sensor 8 are transmitted wirelessly to an external monitoring device 10 for medical personnel. The external monitoring device 10 then compares the monitored pressure values. When the pressure inside the bladder is less than the pressure inside the catheter body 1, the external monitoring device 10 wirelessly controls an alarm to sound, alerting medical personnel to a catheter blockage.

[0030] In addition, medical staff can adjust the pressure change warning threshold through the external monitoring device 10 according to the patient's condition, so that the pressure change is changed to trigger an alarm only when the pressure in the bladder is less than the pressure in the tube 1 for a period of time, thereby making the blockage warning function of the device provided by the present invention more accurate.

[0031] As a preferred embodiment, the first sensor 7 is a miniature piezoresistive pressure sensor. Its detection end is embedded in the side wall of the tube 1 between the balloon 6 and the water injection end 3 through a medical-grade silicone sealant, ensuring communication with the inner lumen of the tube 1 without affecting the flow of urine. The sensor body is fixed to the outer wall of the tube 1 with medical adhesive, and the output end is connected to the wireless transmission module at the end of the tube 1 through a shielded wire.

[0032] The second sensor 8 is a piezoresistive pressure sensor of the same model as the first sensor 7. It is installed on the side wall of the tube 1 5cm behind the water inlet 3. The installation method is the same as that of the first sensor 7 to ensure real-time pressure monitoring during the flow of urine in the tube 1.

[0033] Alarm 9: Installed close to the second sensor 8, with its alarm end and wireless transmission end protruding from the outer surface of the tube body 1 to enhance its wireless signal.

[0034] Calibration process: Before the device leaves the factory, the two sensors need to be calibrated at multiple points under a standard pressure environment (0-50cmH2O) and the pressure measurement accuracy error is set to ≤±0.5cmH2O. Before clinical use, medical staff can use the "calibration" function of the external monitoring device 10 to perform zero-point correction on the sensors to eliminate baseline drift caused by temperature (20-37℃) and body position changes.

[0035] As a preferred method, data transmission: real-time pressure data from the first sensor 7 (monitoring bladder pressure, denoted as P1) and the second sensor 8 (monitoring tube body 1 pressure, denoted as P2) are transmitted to the external monitoring device 10 via Bluetooth 5.0 low-power wireless transmission technology, with a transmission interval of 1 second / time, ensuring data real-time performance while reducing power consumption.

[0036] Alarm triggering method: When the "blockage warning state" condition is met, the external monitoring device 10 immediately activates the triple alarm mechanism:

[0037] ① The alarm 9 emits a buzzing sound of 80-100dB and an intermittent alert sound at a frequency of 1Hz;

[0038] ② The display screen of the external monitoring device 10 flashes a red warning box and simultaneously displays the current values ​​of P1, P2 and ΔP;

[0039] ③ The terminal's built-in wireless module sends an alarm SMS to the preset medical staff mobile APP, which includes the message "Patient XXX (bed number) urinary catheter obstruction warning, current P1: XX cmH2O, P2: XX cmH2O".

[0040] Threshold adjustment operation: Medical staff can access the "Threshold Setting" interface through the external monitoring device 10 and manually input the warning threshold ΔP (default value is 0 cmH2O) and duration (default value is 3 seconds). For example, for elderly patients with weak bladder contraction function, the warning threshold can be adjusted to ΔP≤2 cmH2O to trigger the alarm in advance; for pediatric patients, the alarm frequency can be adjusted to 2 seconds / time to remind medical staff to take immediate action.

[0041] Threshold memory function: The external monitoring device 10 supports storing custom thresholds according to patient information (name, bed number, medical record number). When the same patient uses it again, the historical settings can be directly recalled without repeated adjustments.

[0042] As a preferred embodiment, the present invention also provides an intraoperative anti-interference design.

[0043] Electromagnetic interference resistance: The sensor's shielded wires adopt a double-layer metal mesh shielding structure, and the wireless transmission module adds an electromagnetic shielding cover to ensure that pressure data transmission is not interfered with in strong electromagnetic environments such as surgical scalpels and monitors, with a false alarm rate of ≤0.1%.

[0044] Position adaptation: An "intraoperative mode" is added to the external monitoring device 10. When activated, it automatically filters out instantaneous pressure fluctuations (ΔP fluctuation amplitude > 5 cmH2O and duration < 1 second) caused by surgical operations (such as patient turning over or surgical instruments touching the tube 1) to avoid false alarms.

[0045] Example 1: Optimization for Special Scenarios

[0046] For special scenarios such as simultaneous monitoring of multiple patients in the intensive care unit (ICU) and frequent changes in patient position during surgery, this embodiment has made adaptive optimizations to the device to improve its stability and practicality.

[0047] Networking Function: The external monitoring device 10 supports multi-device networking. One host (nurse station terminal) can simultaneously receive pressure data from 10 urinary catheter devices. The display screen shows the real-time data and status (normal / warning) of each patient's P1, P2, and ΔP in a split-screen manner, and the bed number is identified with different colors to facilitate medical staff to quickly identify abnormalities.

[0048] Data storage and traceability: The host supports automatic storage of all stress data within 72 hours, archived by patient ID, and can export data in Excel format via USB flash drive for clinical analysis or medical record retention; it also supports abnormal event marking, automatically recording the trigger time, duration and processing result of each alarm, which is convenient for subsequent review.

[0049] Example 2: Clinical Use Procedure

[0050] Preoperative preparation: Verify patient information and device model, check whether tube 1 and balloon 6 are intact, and whether the sensor wires are undamaged; connect the sensor through external monitoring device 10, complete zero-point calibration, and set custom warning thresholds.

[0051] Catheterization procedure: Following the standard catheterization procedure, insert the catheter port 5 of the catheter body 1 into the patient's bladder, inject an appropriate amount of normal saline (10-15ml for adults, 5-8ml for children) into the balloon 6 through the water injection end 3, and fix the catheter; confirm that the urination port 2 is connected to the drainage bag and that the second sensor 8 is in a horizontal position (to avoid pressure deviation caused by body position).

[0052] Monitoring Startup: Click "Start Monitoring" on the external monitoring device 10 to confirm that the data of P1 and P2 are normal (the initial value of P1 is usually 5-15 cmH2O, and P2 is close to atmospheric pressure). The alarm 9 is in standby mode.

[0053] Alarm handling: When an alarm is triggered, medical staff should follow the handling suggestions for the corresponding risk level. After the handling is completed, click the "Clear Alarm" button on the external monitoring device 10, and the system will resume normal monitoring.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for preventing urinary catheter blockage with an alarm function, comprising a tube body (1) and a urination port (2), a water injection end (3), a medication injection end (4), a catheter port (5), and a balloon (6) disposed on the tube body (1), characterized in that, A first sensor (7) is provided between the balloon (6) and the water injection end (3), and a second sensor (8) and an alarm (9) are provided behind the water injection end (3); the alarm (9), the first sensor (7) and the second sensor (8) are controlled by an external monitoring device (10).

2. The anti-clogging catheter device with alarm function according to claim 1, characterized in that, The first sensor (7) and the second sensor (8) are miniature piezoresistive pressure sensors; the detection ends of the first sensor (7) and the second sensor (8) are embedded in the side wall of the tube (1) between the balloon (6) and the water injection end (3) through medical-grade silicone sealant; the alarm (9) is installed close to the second sensor (8), and its alarm end and wireless transmission end protrude from the outer surface of the tube (1).

3. The anti-clogging catheter device with alarm function according to claim 2, characterized in that, The real-time pressure data from the first sensor (7) and the second sensor (8) are transmitted to an external monitoring device (10) via Bluetooth 5.0 wireless transmission technology, with a transmission interval of 1 second / time.

4. The anti-clogging catheter device with alarm function according to claim 1, characterized in that, The alarm triggering methods of the alarm (9) include: ① The alarm (9) emits a buzzing sound of 80-100dB and an intermittent prompting sound with a frequency of 1Hz; ② The display screen of the external monitoring device (10) flashes a red warning box, and simultaneously displays the current bladder pressure P1, tube body (1) pressure P2 and warning threshold ΔP; ③ The terminal's built-in wireless module sends alarm text messages to the preset medical staff mobile APP.

5. The anti-clogging catheter device with alarm function according to claim 1, characterized in that, The external monitoring device (10) also includes a threshold memory function: the external monitoring device (10) supports storing custom thresholds according to patient information.

6. The anti-clogging catheter device with alarm function according to claim 1, characterized in that, The external monitoring device (10) and the alarm (9) are equipped with an "intraoperative mode" function. When activated, the mode automatically filters out instantaneous pressure fluctuations caused by surgical operations to avoid false alarms.

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