Lung lavage flushing and sucking machine

By adjusting the flow rate and frequency of the lavage fluid, and using inlet and outlet pumps, and by monitoring airway pressure in real time, safe and efficient lung lavage was achieved, solving the problem of low lavage efficiency in existing technologies and reducing the risk of complications.

CN121668436APending Publication Date: 2026-03-17SHANGHAI CHEST HOSPITAL
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202610072052.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-20
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Current bronchoalveolar lavage techniques are inefficient, take too long to complete, are prone to adverse complications, and have unsatisfactory results from a single lavage session.

Method used

An adjustable inlet and outlet pump, along with inlet and outlet pipes, are used to control the flow rate and frequency of the irrigation fluid. An airway pressure monitor is used to monitor the airway pressure in real time, thus achieving efficient irrigation.

Benefits of technology

It shortens irrigation time, improves irrigation efficiency, and reduces the risk of adverse complications for patients during and after the procedure.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121668436A_ABST
    Figure CN121668436A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of medical lavage equipment, and discloses a lung lavage flushing and sucking machine which comprises an adjustable water inlet pump for providing lavage fluid input power; one end of the water inlet pipe is connected with the adjustable water inlet pump, and the other end of the water inlet pipe is inserted into the lung through a trachea cannula and is provided with a water injection nozzle; one end of the water outlet pipe is close to the lung to collect waste liquid after lavage, and the other end extends to the far end; the wastewater discharge structure is connected with one end, extending to the far end, of the water outlet pipe and used for receiving wastewater after irrigation. The lavage force is improved through the adjustable water inlet pump, efficient lavage of the deep part in the lung is achieved, meanwhile, continuous collection of waste water is achieved through cooperation of the water outlet pipe and the waste water collecting device, and the lavage efficiency in the lung is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of medical lavage equipment technology, specifically to a lung lavage irrigation and suction machine. Background Technology

[0002] Bronchoalveolar lavage is primarily used for patients with pulmonary proteinosis and pneumoconiosis. It involves filling the lungs with saline solution and then withdrawing the saline to cleanse the lungs. Because it lacks the force of impact and relies solely on soaking and cleaning with the fluid, a single lavage session is inefficient. Therefore, repeated lavage sessions are necessary to achieve the desired therapeutic effect. The overall treatment time is excessively long, generally exceeding 3 hours. During this prolonged and repeated lavage process, patients frequently experience adverse complications such as hypotension and hypoxemia, which can be life-threatening. Furthermore, the extended lavage time often leads to serious postoperative complications such as pulmonary edema. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention aims to provide a lung lavage irrigation and aspiration machine that improves the lavage effect, effectively shortens the lavage time, and increases lavage efficiency while reducing the risk of adverse complications for patients during and after the procedure by controlling the frequency and flow rate of water entering the lungs.

[0004] To achieve the above technical objectives, the present invention provides the following technical solution: a lung lavage and irrigation machine, comprising, An adjustable inlet pump provides power for the input of irrigation fluid; The water inlet pipe is connected to an adjustable water pump at one end and inserted into the lungs through an endotracheal tube at the other end, which is equipped with a water spray nozzle. The outlet tube has one end close to the lungs to collect waste fluid after lavage, and the other end extends distally. The wastewater discharge structure is connected to one end of the outlet pipe that extends to the far end, and is used to receive wastewater after rinsing.

[0005] According to the present invention, it further includes a connector for connection to the endotracheal tube interface, the water inlet tube is inserted into the endotracheal tube to the lungs through the connector, and the water outlet tube is tightly connected to the outside of the connector.

[0006] According to the present invention, the device further includes an airway pressure monitor, which is connected to an endotracheal tube via a connector for continuously monitoring the pressure inside the airway during irrigation. The function of the airway pressure monitor is to monitor the pressure inside the airway during irrigation treatment to prevent damage caused by excessive pressure due to excessive fluid in the lungs.

[0007] According to the present invention, the outlet pipe is further provided with an adjustable water pump to adjust the flow rate of the discharged lung lavage waste fluid and provide power for the discharge of waste fluid.

[0008] According to the present invention, one end of the water inlet pipe is sealed to the output port of the adjustable water inlet pump, and the other end is sealed to the spray nozzle.

[0009] According to the present invention, the spray nozzle may include, but is not limited to, a single hole or multiple holes. Compared with the prior art, the beneficial effects of the present invention are as follows: This invention adjusts the flow rate and frequency of lavage fluid entering the lungs, and uses the combination of an outlet pipe, a water pump, and a waste fluid recovery device to achieve continuous collection of wastewater. At the same time, it can monitor the internal pressure of the airway in real time to achieve safe, continuous, and efficient lavage, thus realizing efficient lavage of the deep lungs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the lung lavage and inhalation machine of the present invention.

[0011] In the attached diagram, 1-adjustable water inlet pump, 2-water inlet pipe, 3-spray nozzle, 4-connector, 5-airway pressure monitor, 6-water outlet pipe, 7-adjustable water pump, and 8-waste liquid recovery device. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] like Figure 1 As shown in the illustration, this application provides a lung lavage irrigation and suction machine, including an adjustable inlet pump 1, the output end of which is connected to an inlet pipe 2. The distal end of the inlet pipe 2 is connected to a spray nozzle 3. The spray nozzle 3 and part of the inlet pipe 2 are inserted into the lungs of a human body through an endotracheal tube. The adjustable inlet pump 1 is activated to pump lavage fluid into the lungs for lavage treatment. The inlet pipe 2 is tightly connected to the interface of the endotracheal tube through a connector 4. The outlet pipe 6 is tightly connected to the outside of the connector 4. An adjustable pump 7 is also provided on the outlet pipe 6. The adjustable pump 7 controls the flow rate of the lavage waste fluid in the outlet pipe 6 and controls the discharge of the lavage waste fluid from the lungs to a waste fluid recovery device 8. The waste fluid recovery device 8 is preferably a lung lavage-specific waste fluid recovery kit.

[0014] It also includes an airway pressure monitor 5, which monitors the internal pressure of the airway in real time during the irrigation process. Preferably, the airway pressure monitor 5 is connected to the connector 4, which is closer to the airway to improve monitoring accuracy.

[0015] Specifically, one end of the water inlet pipe 2 is sealed to the output port of the adjustable water inlet pump 1, and the other end is sealed to a spray nozzle 3. The spray nozzle 3 includes, but is not limited to, single or multiple holes. The spray nozzle 3, in conjunction with the adjustable water inlet pump 1, adjusts the liquid flow rate and injection frequency as needed to increase the rinsing force and achieve the purpose of cleaning with fewer pumping operations, thereby further improving the rinsing efficiency.

[0016] In this embodiment, connector 4 is a multi-port connection component, including a main interface, one end of which is connected to the interface of the endotracheal tube, and the water inlet pipe 2 is inserted into the endotracheal tube from the other end of the main interface and extends to the lungs; it also includes a second interface for connecting the water outlet pipe 6, which collects the lavage waste fluid overflowing from the lungs through an internal fluid outlet channel; and it also includes a pressure monitoring interface for connecting the airway pressure monitor 5, the pressure monitoring interface having an integrally formed internal pressure sensing channel, close to the lungs, to ensure real-time and accurate monitoring of the pressure in the airway.

[0017] The working principle of this invention is as follows: Medical staff insert the inlet pipe 2 through the patient's endotracheal tube, allowing the spray nozzle 3 to enter the lungs. They then activate the adjustable inlet pump 1, adjusting the fluid flow rate and infusion frequency as needed. The lavage fluid enters the lungs through the inlet pipe 2 and the spray nozzle 3, allowing it to penetrate deep into the lungs. The lavage waste fluid overflowing after pulmonary lavage flows out through the outlet channel of the connector 4 and then through the outlet pipe 6. The lavage waste fluid in the outlet pipe 6 flows to the waste fluid recovery device 8 after passing through the adjustable pump 7. During the lavage process, the airway pressure monitor 5 continuously monitors the airway pressure. When the lavage pressure is too low or too high, the adjustable pump 7 adjusts the discharge rate to maintain the lungs in the most satisfactory expansion state for lavage treatment.

[0018] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lung lavage flush aspirator characterized by, The application relates to a lung lavage device. An adjustable water inlet pump is provided to power the input of the lavage fluid; An inlet pipe is connected to the adjustable water inlet pump at one end and inserted into the lung through the tracheal cannula at the other end, and a water outlet is arranged at the end inserted into the lung; An outlet pipe is arranged close to the lung to collect the waste liquid after the lavage, and the other end of the outlet pipe extends to the distal end; A waste water discharge structure is connected to the end of the outlet pipe extending to the distal end to receive the waste water after the lavage.

2. The lung lavage flusher of claim 1, wherein, The connector is connected to the tracheal cannula, the inlet pipe is inserted into the tracheal cannula through the connector and extends to the lung, and the outlet pipe is tightly connected to the outside of the connector.

3. The lung lavage flusher of claim 2, wherein, The airway pressure monitor is connected to the tracheal cannula through the connector to continuously monitor the pressure in the airway during the lavage.

4. The lung lavage flusher of claim 1, wherein, An adjustable water outlet pump is arranged on the outlet pipe to adjust the flow rate of the waste liquid discharged from the lung lavage and provide power for the waste liquid discharge.

5. The lung lavage flusher of claim 1, wherein, One end of the inlet pipe is sealingly connected to the output port of the adjustable water inlet pump, and the other end is sealingly connected to the water outlet.

6. The lung lavage flusher of claim 1, wherein, The water outlet includes but is not limited to a single hole or multiple holes.