Sensor for non-contact detection of fluid level in external ventricular drainage mechanism

A non-contact sensor outside the drain pipe provides rapid and reliable fluid level detection with visual and audible alerts, allowing easy replacement, addressing the lack of such methods in existing systems.

WO2025144260A1PCT designated stage Publication Date: 2025-07-03MARMARA ÜNİV STRATEJİ GELİŞ. DAİ. BŞK MUHASEBE BİRİMİ
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Patent Information

Application Number
PCT/TR2024/051443
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-01
Publication Date
2025-07-03

AI Technical Summary

Technical Problem

Existing external ventricular drainage systems lack a non-contact method for rapid and reliable fluid level detection, and there is no provision for sensor replacement in case of failure.

Method used

A non-contact sensor is positioned outside the drain pipe to detect fluid levels in the burette, using audible and visual warnings, and can be easily replaced if necessary.

Benefits of technology

Enables faster and more reliable fluid level detection with visual and audible alerts, ensuring quick replacement if the sensor fails.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a sensor for non-contact detection of fluid level in the external ventricular drainage mechanism.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] Sensor for Non-Contact Detection of Fluid Level in External Ventricular Drainage Mechanism

[0002] Field of the Invention

[0003] The present invention relates to a sensor for non-contact detection of fluid level in the external ventricular drainage mechanism.

[0004] Description of the Related Art

[0005] The term “external ventricular” (EV) is a medical term used to describe external access to the brain ventricles. The ventricles are a system of four cavities inside the brain. These cavities are filled with a fluid called cerebrospinal fluid (CSF), which provides protection by circulating between the membranes surrounding the brain and spinal cord. External ventricular refers to a surgical procedure that involves this ventricular system. An external ventricular catheter is a tube that is surgically inserted into the ventricles of a person's brain. This catheter can be used to remove cerebrospinal fluid (CSF) from the brain ventricles or to drain CSF.

[0006] In external ventricular drainage (EVD) systems, fluid level detection is important to manage the patient's CSF drainage and control intracranial pressure. This detection is typically performed using a manometer or digital monitor that is part of a drainage set.

[0007] The research on this subject has led to application No. CN212593236U. The application relates to a novel drainage bottle. The application does not include a warning system. In addition, a flow is mentioned that is used to adjust the gas pressure. However, the application does not mention an external sensor that detects the fluid level in the external ventricular drainage mechanism in a non-contact method.

[0008] Consequently, in view of the aforementioned drawbacks and the shortcomings of existing solutions, a need has emerged for an advancement in the relevant technical domain.

[0009] Purpose of the Invention

[0010] The present invention is inspired by the prevailing situation and aims to address the aforementioned issues. The main purpose of the present invention is to enable a faster and more rapid detection of the drain liquid level by means of a sensor located outside the drain pipe.

[0011] Another purpose of the present invention is to enable the system to operate by simply replacing the sensor in case of failure of the sensor.

[0012] In order to achieve the aforementioned objectives, the invention is a non-contact sensor that detects the level of fluid in the external ventricular drainage mechanism and comprises a sensor that is not in direct contact with the fluid and is connected to the slide on the outside of the burette to detect the level of fluid in the burette after the cerebrospinal fluid from the brain is filled into the burette.

[0013] The structural and characteristic features as well as all advantages of the invention will be better understood with the help of the following figures and the detailed description with references to these figures and therefore, evaluation should be carried out taking into account these figures and the detailed description.

[0014] Figures to Assist in the Understanding of the Invention

[0015] Figure 1 , provides a representative illustration of a sensor for non-contact detection of fluid level in the external ventricular drainage mechanism of the invention.

[0016] Description of the Part References

[0017] 1. String

[0018] 2. Three-way valve

[0019] 3. Connection tube

[0020] 4. Clamp

[0021] 5. Burette

[0022] 6. Sensor

[0023] 6.1 Speaker

[0024] 6.2 Light

[0025] 6.3 Battery box 6.4 Battery stabilizer

[0026] 7. Cardboard sheet

[0027] 8. Fluid bag

[0028] 9. Fluid dispensing port

[0029] 10. Injection port

[0030] 11. Slide

[0031] Fl. Fluid inlet

[0032] Detailed Description of the Invention

[0033] The present detailed description describes the preferred embodiments of a sensor (6) for non-contact detection of fluid level in the external ventricular drainage mechanism of the invention, solely for the purpose of a better understanding of the subject.

[0034] The external ventricular drainage mechanism comprising string (1), three-way valve (2), connection tube (3), clamp (4), burette (5), sensor (6), cardboard sheet (7), fluid bag (8), fluid dispensing port (9), and injection port (10). The mentioned sensor (6) comprises speaker (6.1), light (6.2), battery case (6.3) and battery stabilizer (6.4).

[0035] The string (1) is used for suspending the external ventricular system. The three-way valve (2) is used for measuring pressure, switching the mechanism on and off or connecting it to the transducer. The connection tube (3) is the connection between the burette (5) and the fluid bag (8). This is the method through which cerebrospinal fluid is discharged. The clamp (4) is used to open and close the connection tube (3). The burette (5) is the reservoir where the cerebrospinal fluid is collected. Sensor (6) is used for non-contact detection of the fluid level. The sensor (6) enables the detection of the set fluid level in the burette (5) after the cerebrospinal fluid flowing from the brain through the luer connector is dispensed into the burette (5). The sensor (6) is adjusted to the desired level (set fluid level) by the healthcare personnel. The fluid filled into the burette (5) gradually builds up in the reservoir. Once the cerebrospinal fluid reaches the set fluid level and aligns with the level of the sensor (6), the sensor (6) starts to generate an audible and visual warning. The sensor (6) is not in direct contact with the liquid and is connected to the slide (11 ) on the outside of the burette (5). The sensor (6) can be moved up and down on the stationary slide (11 ). The cardboard sheet (7) is a backdrop for adjusting or maintaining the level of the burette (5). It is suspended from a suitable level by adjusting the mechanism according to the patient's head level using the string (1 ). Fluid bag (8), cerebrospinal fluid is collected in the reservoir. The fluid is then transferred into the fluid bag (8) after opening the clamp (4). The fluid is collected and disposed of as medical waste. The fluid dispensing port (9) is used to dispense the fluid from the fluid bag (8). The injection port (10) is the injection port used to wash or disinfect the fluid bag (8).

Claims

CLAIMS1. A sensor (6) for non-contact detection of fluid level in the external ventricular drainage mechanism, comprising;• a sensor (6) connected to the slide (11) on the outer part of the burette (5), which is not in direct contact with the fluid, characterized in that it detects the fluid level in the burette (5) after filling the burette (5) with cerebrospinal fluid from the brain2. A sensor according to claim 1 , characterized in that the said sensor (6) comprises;• speaker (6.1) for audible warning and light (6.2) for visual warning after the user-defined fluid level reaches the set level in the burette (5)

Citation Information

Patent Citations

  • Drainage device for neurosurgery

    CN204951763U

  • Ventricular drainage timing and quantitative control device

    CN210494720U

  • Brain drainage device with alarm function

    CN218129399U