Drainage tube for monitoring intrapleural pressure

Abstract

The utility model discloses a kind of chest drainage tube for monitoring intrapleural pressure, comprising: drainage tube body, for inserting intrapleural, and outlet end are equipped on drainage tube body;First pressure sensor, set on the one side of the insertion end on the outer periphery of the drainage tube body, for real-time monitoring the pressure value in pleural cavity, the first pressure sensor is electrically connected with signal transmission device;Signal transmission device, for receiving the pressure signal transmitted by the first pressure sensor, and the signal is transmitted to external display unit;Drainage hole, set on the pipe wall of the insertion end of the drainage tube body, for draining effusion or gas in pleural cavity.The utility model can monitor intrapleural pressure in real time accurately, understand patient spontaneous breathing intensity, calculate transpulmonary pressure and transpulmonary driving pressure, guide the treatment of acute respiratory distress syndrome patient, breathing machine setting and patient offline extubation process.

Description

Technical Field

[0001] This utility model relates to the field of critical care technology, specifically to a pleural drainage tube for monitoring intrapleural pressure. Background Technology

[0002] Monitoring intrapleural pressure can better calculate transpulmonary pressure (which depends on the difference between airway pressure and intrapleural pressure) and transpulmonary driving pressure, guiding the treatment of patients with acute respiratory distress syndrome (ARDS), ventilator parameter settings, and weaning from ventilator and extubation.

[0003] Currently, esophageal pressure monitoring is used clinically as a substitute for intrapleural pressure monitoring. However, this method has drawbacks such as inaccuracy and strict requirements for placement depth. First, there is a difference between esophageal pressure and intrapleural pressure. Esophageal pressure is affected by various factors, such as esophageal muscle contraction and the passage of food, which can lead to discrepancies between the two. Second, esophageal pressure monitoring requires precise placement. The catheter must be accurately placed at the junction of the lower third of the esophagus and the stomach, specifically at the location of the esophageal sphincter. Placement that is too shallow or too deep can result in inaccurate monitoring results. Furthermore, the insertion and fixation of the esophageal pressure monitoring catheter can cause complications such as esophageal mucosal damage, bleeding, or infection.

[0004] To address the aforementioned issues, this invention presents a thoracentesis drainage tube with a pressure sensor at its tip. This tube can be placed in some ARDS patients undergoing thoracentesis for pleural effusion or pneumothorax. It allows for real-time and accurate monitoring of intrapleural pressure, understanding of the patient's spontaneous breathing intensity, calculation of transpulmonary pressure and transpulmonary driving pressure, and guidance on ventilator settings and patient weaning / extubation procedures. Utility Model Content

[0005] In view of the above problems, this utility model provides a chest drainage tube for monitoring intrapleural pressure, comprising:

[0006] The drainage tube body is used to insert into the pleural cavity, and the drainage tube body is provided with an insertion end and an outlet end;

[0007] The first pressure sensor is located on the outer periphery of the drainage tube near the insertion end, and is used to monitor the pressure value in the pleural cavity in real time. The first pressure sensor is electrically connected to the signal transmission device.

[0008] A signal transmission device is used to receive the pressure signal transmitted by the first pressure sensor and transmit the signal to an external display unit;

[0009] A drainage hole is provided on the wall of the insertion end of the drainage tube body for draining effusion or gas in the pleural cavity.

[0010] In one alternative approach, the number of drainage holes is multiple, and the multiple drainage holes are located on both sides of the location of the pressure sensor.

[0011] In one alternative embodiment, a second pressure sensor is provided on the body of the drainage tube, the second pressure sensor being located on the outer periphery of the body of the drainage tube on the side corresponding to the first pressure sensor and away from the insertion end.

[0012] In one alternative embodiment, a communication channel is provided between the first pressure sensor and the second pressure sensor, and the first pressure sensor is sequentially connected to the communication channel and the second pressure sensor.

[0013] In one alternative embodiment, the drainage tube body is provided with a drug injection port, and the drug injection port is provided with a one-way valve.

[0014] In one alternative embodiment, the drainage tube body is provided with a drug injection tube connected to the drug injection port, and a second one-way valve is provided at one end of the drug injection tube near the outlet end.

[0015] In one alternative approach, the outlet end is detachably connected to the drainage tube body.

[0016] In one alternative, the first pressure sensor and the second pressure sensor are inflatable pressure sensing devices, which are miniature airbags pre-filled with a preset volume of gas, and the pressure sensor is disposed inside the miniature airbag.

[0017] The present invention includes: a drainage tube body for insertion into the pleural cavity, the drainage tube body having an insertion end and an outlet end; a first pressure sensor disposed on the outer periphery of the drainage tube body near the insertion end, for real-time monitoring of the pressure value within the pleural cavity, the first pressure sensor being electrically connected to a signal transmission device; a signal transmission device for receiving the pressure signal transmitted by the first pressure sensor and transmitting the signal to an external display unit; and a drainage hole disposed on the wall of the insertion end of the drainage tube body for draining effusion or gas from the pleural cavity. This invention can accurately monitor intrapleural pressure in real time, understand the patient's spontaneous breathing intensity, calculate transpulmonary pressure and transpulmonary driving pressure, and guide ventilator settings and extubation procedures for ARDS patients.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 A schematic diagram of a thoracic drainage tube for monitoring intrapleural pressure according to an embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of an airbag-type pressure sensing device according to an embodiment of the present invention is shown;

[0022] Figure label:

[0023] 1. Syringe connector

[0024] 2. Export end

[0025] 3. Connection point

[0026] 4. Drug injection site

[0027] 5. Drainage tube body

[0028] 6. Second pressure sensor

[0029] 7 First pressure sensor

[0030] 8. Insertion end

[0031] 9 Miniature airbags Detailed Implementation

[0032] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0033] Figure 1 A schematic diagram of a thoracic drainage tube for monitoring intrapleural pressure according to an embodiment of the present invention is shown. Figure 1 Specifically, such as Figure 1As shown, it includes:

[0034] The drainage tube body 5 is used to insert into the pleural cavity. The drainage tube body 5 is provided with an insertion end 8 and an outlet end 2.

[0035] The first pressure sensor 7 is disposed on the outer periphery of the drainage tube body 5 near the insertion end 8, and is used to monitor the pressure value in the pleural cavity in real time. The first pressure sensor 7 is electrically connected to the signal transmission device.

[0036] A signal transmission device is used to receive the pressure signal transmitted by the first pressure sensor 7 and transmit the signal to an external display unit;

[0037] A drainage hole is provided on the wall of the insertion end 8 of the drainage tube body 5 for draining effusion or gas in the pleural cavity.

[0038] In this embodiment, the pressure value within the pleural cavity is monitored in real time by the first pressure sensor 7. Medical staff can immediately obtain the pressure status within the patient's pleural cavity, thereby guiding the ventilator settings and treatment for ARDS patients. The drainage holes on the drainage tube body 5 allow for the smooth drainage of effusion or gas, promoting lung re-expansion, improving the patient's respiratory status, and facilitating recovery. The signal transmission device transmits the pressure signal to an external display unit, allowing medical staff to visually observe the pressure changes within the pleural cavity, facilitating disease analysis. The first pressure sensor 7 employs a high-precision, low-power sensor chip and is wirelessly connected to the signal transmission device, transmitting the real-time monitored pressure signal to the external display unit. The signal transmission device uses a wireless / wired transmission method.

[0039] In one alternative approach, such as Figure 2 As shown, the first pressure sensor 7 employs an airbag-type pressure sensing device, which is a miniature airbag 9 pre-filled with a certain volume of gas (e.g., 2 ml). The pressure sensor is placed inside the miniature airbag 9, which serves as the pressure sensing medium. Changes in its internal pressure directly reflect changes in pleural cavity pressure. When the pressure inside the pleural cavity changes (e.g., negative pressure changes caused by respiration), the volume or internal pressure of the airbag will change accordingly. The pressure sensor converts the pressure change inside the airbag into an electrical signal, which is then transmitted to an external monitoring device for display and recording.

[0040] In one alternative approach, the number of drainage holes is multiple, and the multiple drainage holes are located on both sides of the location of the pressure sensor.

[0041] In this embodiment, multiple drainage holes increase the drainage area, thereby accelerating the drainage of pleural effusion or gas and improving drainage efficiency. The drainage holes are located on both sides of the pressure sensor, ensuring that monitoring of intrapleural pressure does not affect the drainage effect. The pressure sensor is located outside the drainage tube, thus accurately measuring intrapleural pressure. Multiple drainage holes do not interfere with the normal operation of the pressure sensor.

[0042] In one alternative embodiment, a second pressure sensor 6 is provided on the drainage tube body 5, the second pressure sensor 6 being located on the outer periphery of the drainage tube body 5 on the side corresponding to the first pressure sensor 7 and away from the insertion end 8.

[0043] In this embodiment, two pressure sensors (first pressure sensor 7 and second pressure sensor 6) are installed on the drainage tube to obtain more comprehensive intrapleural pressure information. Furthermore, the two sensors can verify each other, reducing inaccurate monitoring caused by the failure or error of a single sensor.

[0044] In one alternative embodiment, a communication channel is provided between the first pressure sensor 7 and the second pressure sensor 6, and the first pressure sensor 7 is sequentially connected to the communication channel and the second pressure sensor 6.

[0045] In this embodiment, the connecting channel allows the first pressure sensor 7 and the second pressure sensor 6 to share the same gas source, thereby achieving pressure equalization between the two sensors and reducing monitoring errors caused by differences in sensor position or response time. Furthermore, the connecting channel makes the drainage tube structure more compact, reducing unnecessary connecting parts and interfaces, and lowering the production cost and ease of use of the drainage tube.

[0046] In one alternative embodiment, the drainage tube body 5 is provided with a drug injection port 4, and the drug injection port 4 is provided with a one-way valve.

[0047] In this embodiment, the one-way valve ensures that the drug can only be injected from the drug injection port 4 and will not flow back out from the inside of the drainage tube.

[0048] In one alternative embodiment, the drainage tube body 5 is provided with a drug injection tube that communicates with the drug injection port 4, and a second one-way valve is provided at one end of the drug injection tube near the outlet end 2.

[0049] In this embodiment, the drug injection tube is separated from the drainage tube body 5, and drug injection does not affect the normal drainage function of the drainage tube. During use, the drug is injected into the drug injection tube through the drug injection port 4 using a syringe. The drug will pass through the second one-way valve into the drainage tube body 5 and act on the lesion area. After injection, the second one-way valve will automatically close to prevent drug backflow.

[0050] In one alternative embodiment, the outlet end 2 is detachably connected to the drainage tube body 5.

[0051] In this embodiment, the outlet end 2 is provided with a syringe connector 1 for easy connection with syringes, etc. The detachable outlet end 2 can be replaced with outlet ends 2 of different sizes, shapes or materials according to the patient's treatment needs.

[0052] The present invention includes: a drainage tube body for insertion into the pleural cavity, the drainage tube body having an insertion end and an outlet end; a first pressure sensor disposed on the outer periphery of the drainage tube body near the insertion end, for real-time monitoring of the pressure value within the pleural cavity, the first pressure sensor being electrically connected to a signal transmission device; a signal transmission device for receiving the pressure signal transmitted by the first pressure sensor and transmitting the signal to an external display unit; and a drainage hole disposed on the wall of the insertion end of the drainage tube body for draining effusion or gas from the pleural cavity. This invention can accurately monitor intrapleural pressure in real time, understand the patient's spontaneous breathing intensity, calculate transpulmonary pressure and transpulmonary driving pressure, and guide ventilator settings and extubation procedures for ARDS patients.

[0053] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination of all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed can be employed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose. Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination. This invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices may be embodied by the same hardware item. Unless otherwise specified, the steps in the above embodiments should not be construed as limiting the order of execution.

Claims

1. A chest drainage tube for monitoring intrapleural pressure, characterized in that, include: The drainage tube body is used to insert into the pleural cavity, and the drainage tube body is provided with an insertion end and an outlet end; The first pressure sensor is located on the outer periphery of the drainage tube near the insertion end, and is used to monitor the pressure value in the pleural cavity in real time. The first pressure sensor is electrically connected to the signal transmission device. The second pressure sensor is located on the outer periphery of the drainage tube, on the side corresponding to the first pressure sensor and away from the insertion end; A signal transmission device is used to receive the pressure signal transmitted by the first pressure sensor and transmit the signal to an external display unit; A drainage hole is provided on the wall of the insertion end of the drainage tube body for draining effusion or gas in the pleural cavity.

2. The pleural drainage tube for monitoring intrapleural pressure according to claim 1, characterized in that, There are multiple drainage holes, which are located on both sides of the pressure sensor.

3. The pleural drainage tube for monitoring intrapleural pressure according to claim 1, characterized in that, A connecting channel is provided between the first pressure sensor and the second pressure sensor, and the first pressure sensor is connected to the connecting channel and the second pressure sensor in sequence.

4. The pleural drainage tube for monitoring intrapleural pressure according to claim 1, characterized in that, The drainage tube body is equipped with a drug injection port, and the drug injection port is equipped with a one-way valve.

5. The pleural drainage tube for monitoring intrapleural pressure according to claim 4, characterized in that, The drainage tube body is provided with a drug injection tube that is connected to the drug injection port, and a second one-way valve is provided at one end of the drug injection tube near the outlet end.

6. The pleural drainage tube for monitoring intrapleural pressure according to claim 1, characterized in that, The outlet end is detachably connected to the drainage tube body.

7. The pleural drainage tube for monitoring intrapleural pressure according to claim 3, characterized in that, The first pressure sensor and the second pressure sensor are airbag-type pressure sensing devices, which are miniature airbags pre-filled with a preset volume of gas, and the pressure sensor is disposed inside the miniature airbag.

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