Lung clearing and sputum excretion device for respiratory medicine department

By using a dual-layer suction device to perform suctioning and rinsing in parallel, the problem of existing devices being unable to remove viscous sputum is solved, achieving efficient and safe sputum removal and reducing the risk of respiratory tract damage.

CN121775236APending Publication Date: 2026-04-03HANGZHOU XIXI HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-05
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing lung-clearing and sputum-expelling devices are not quick and effective at removing thick sputum, and direct suction can easily cause respiratory tract damage to patients.

Method used

A double-layer suction device was designed, including an outer suction tube and an inner suction tube. Combining functional and control mechanisms, it achieves sputum dilution and suction by using negative pressure suction and oxygen/rinsing fluid in parallel operation, utilizing annular suction holes and functional holes to improve coverage, a closed valve in the guide tube to prevent backflow, and a three-way valve to flexibly switch modes.

Benefits of technology

It improves the efficiency of clearing thick sputum, reduces the risk of respiratory tract damage, and enhances the safety and comfort of lung clearing and sputum removal.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a lung clearing and sputum excretion device for the respiratory medicine department, and relates to the field of medical sputum excretion devices.The lung clearing and sputum excretion device for the respiratory medicine department comprises a sputum suction outer tube and further comprises a sputum suction mechanism used for sucking and removing sputum in the respiratory tract of a patient, a functional mechanism used for conveying oxygen into the respiratory tract of the patient and flushing the sputum in the respiratory tract and a control mechanism; the device is used for adjusting the conveying of oxygen and flushing fluid by the functional tube and the plurality of conveying catheters. The device has the advantages that the parallel operation of sputum suction and flushing oxygen supply is realized through the double-layer structure of the sputum suction outer tube and the sputum suction inner tube; due to the sputum suction holes and the functional holes which are annularly distributed, the operation coverage range and efficiency are improved; the closing valve at the tail end of the guide pipe can prevent pollutants from flowing back; the three-way valve allows flexible switching of oxygen and flushing modes to adapt to different clinical requirements; the overall structural design gives consideration to sputum removal efficiency and respiratory tract protection of a patient, is particularly suitable for mild treatment of sticky sputum, and reduces the risk of mucosa injury.
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Description

Technical Field

[0001] This invention relates to the field of medical sputum clearance devices, specifically to a lung-clearing and sputum-clearing device for respiratory medicine. Background Technology

[0002] Lung clearing and expectoration in respiratory medicine is a core treatment measure that uses comprehensive medical methods to remove accumulated sputum, secretions, or foreign objects from the respiratory tract in order to restore lung ventilation function, relieve symptoms, and prevent complications. It is especially suitable for patients with chronic obstructive pulmonary disease, bronchiectasis, pneumonia, or those whose sputum is thick and difficult to cough up due to smoking or air pollution. By clearing sputum, it reduces bacterial growth, lowers the risk of atelectasis and respiratory failure, and improves symptoms such as cough, chest tightness, and shortness of breath.

[0003] Existing lung-clearing and sputum-expelling devices lack the ability to quickly remove thick sputum from the respiratory tract. They typically use a suction tube in conjunction with a negative pressure device to directly suction out sputum from the respiratory tract. However, they are not able to quickly and completely remove thicker sputum, and directly suctioning out thicker sputum can easily cause respiratory tract damage to patients. Summary of the Invention

[0004] The purpose of this invention is to provide a lung-clearing and sputum-expelling device for respiratory medicine, so as to solve the problem of inconvenience in using existing sputum suction devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a respiratory medicine lung-clearing and sputum-expelling device, comprising an external suction tube, and further comprising: a suction mechanism, disposed on the external suction tube, for suctioning sputum from the patient's respiratory tract, the suction mechanism comprising an internal suction tube fixedly disposed inside the external suction tube, the end of the external suction tube being fixedly disposed with a suction tube head, and the suction tube head and the internal suction tube being fixedly disposed together; a functional mechanism, disposed on the external suction tube, for delivering oxygen to the patient's respiratory tract and flushing sputum from the respiratory tract, the functional mechanism comprising a receiving plate fixedly disposed at the other end of the external suction tube, a functional tube fixedly disposed on the receiving plate, and a plurality of delivery conduits fixedly disposed on the receiving plate, the functional tube being connected to the plurality of delivery conduits through the receiving plate; and a control mechanism, disposed on the functional tube, for regulating the delivery of oxygen and flushing fluid by the functional tube and the plurality of delivery conduits, the control mechanism comprising a three-way valve fixedly disposed on the functional tube.

[0006] Furthermore, the suctioning mechanism also includes several suction holes on the suction tube head, and the several suction holes are distributed in a ring at equal intervals on the suction tube head.

[0007] Furthermore, the suction mechanism also includes a connecting tube two fixedly disposed at one end of the suction inner tube, and the suction inner tube is connected to the negative pressure device through the connecting tube two.

[0008] Furthermore, the functional mechanism also includes several guide tubes fixedly disposed on the side wall of the delivery catheter, and a closing valve is fixedly disposed at the end of the guide tube.

[0009] Furthermore, the functional mechanism also includes several functional holes on the suction tube head, which are also distributed in a ring at equal intervals on the suction tube head; and the functional holes are not connected to the suction tube head.

[0010] Furthermore, the functional mechanism also includes an oxygen tube fixedly mounted on the functional tube, and a flushing tube fixedly mounted on the functional tube at the side of the oxygen tube; and a connecting tube is fixedly mounted at the end of both the flushing tube and the oxygen tube.

[0011] Furthermore, several guide tubes on several of the delivery conduits are respectively fixedly disposed within several of the functional holes.

[0012] Furthermore, the control mechanism also includes a control knob that is rotated on the three-way valve.

[0013] Compared with existing technologies, the present invention provides a respiratory medicine lung-clearing and sputum-expelling device. The suction tube is inserted into the target area through the patient's airway. The inner suction tube is connected to a negative pressure device via a connecting tube. After activation, sputum is suctioned through the suction port. If the sputum is viscous and difficult to suction, a flushing tube and an oxygen tube can be connected via a functional tube. A three-way valve can be adjusted using a control knob to select the delivery of oxygen or flushing fluid. The flushing fluid is sprayed through the delivery tube, guide tube, and functional port to dilute the sputum, which is then suctioned out through the suction port for effective sputum removal. Oxygen can be supplied simultaneously. This device supports the patient's respiratory function. Its advantages include: a dual-layer structure of external and internal suction tubes enabling parallel sputum suction, flushing, and oxygen supply; annularly distributed suction and functional orifices improving operational coverage and efficiency; a closed valve at the end of the guide tube preventing backflow of contaminants; a three-way valve allowing flexible switching between oxygen and flushing modes to adapt to different clinical needs; and an overall structural design that balances sputum clearance efficiency with patient airway protection, making it particularly suitable for the gentle handling of viscous sputum, reducing the risk of mucosal damage, and enhancing the safety and comfort of lung clearing and sputum removal. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of the lung-clearing and sputum-expelling device provided in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the suction tube structure of the lung-clearing and sputum-expelling device provided in an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the suction catheter head structure provided in an embodiment of the present invention;

[0018] Figure 4 This is a diagram illustrating the structure of the receiving plate provided in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the receiving plate connection structure provided in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the delivery conduit output structure provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Suction tube; 2. Suction tube tip; 3. Receiving tray; 4. Suction tube; 5. Functional tube; 6. Delivery tube; 7. Suction port; 8. Functional port; 9. Three-way valve; 10. Flushing tube; 11. Oxygen tube; 12. Connecting tube one; 13. Connecting tube two; 14. Control knob; 15. Guide tube; 16. Closing valve. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] As attached Figure 1 To be continued Figure 6 As shown:

[0025] Example 1:

[0026] This invention provides a respiratory medicine lung-clearing and sputum-expelling device, including an external suction tube 1, and further comprising: a suction mechanism, disposed on the external suction tube 1, for suctioning sputum from the patient's respiratory tract; the suction mechanism includes an internal suction tube 4 fixedly disposed inside the external suction tube 1, and a suction tube head 2 fixedly disposed at the end of the external suction tube 1, with the suction tube head 2 and the internal suction tube 4 being fixedly disposed together; a functional mechanism, disposed on the external suction tube 1, for delivering oxygen to the patient's respiratory tract and flushing sputum from the respiratory tract; the functional mechanism includes a receiving plate 3 fixedly disposed at the other end of the external suction tube 1, a functional tube 5 fixedly disposed on the receiving plate 3, and a plurality of delivery conduits 6 fixedly disposed on the receiving plate 3, with the functional tube 5 connected to the plurality of delivery conduits 6 through the receiving plate 3; and a control mechanism, disposed on the functional tube 5, for regulating the delivery of oxygen and flushing fluid by the functional tube 5 and the plurality of delivery conduits 6, the control mechanism including a three-way valve 9 fixedly disposed on the functional tube 5.

[0027] Simultaneously, the suction catheter head 2 is inserted into the target area through the patient's airway, and the suction inner tube 4 is connected to the negative pressure device through the connecting tube 2 13. After activation, the sputum is suctioned through the suction port 7. If the sputum is viscous and difficult to suction, the flushing tube 10 and oxygen tube 11 can be connected through the function tube 5. The three-way valve 9 can be adjusted using the control knob 14 to select the delivery of oxygen or flushing fluid. The flushing fluid is sprayed out through the delivery tube 6, guide tube 15 and function port 8 to dilute the sputum, and then suctioned out with the suction port 7 to achieve effective sputum removal. Oxygen can be supplied at the same time to maintain the patient's respiratory function. The advantages of this device are as follows: the double-layer structure of the external suction tube 1 and the internal suction tube 4 enables parallel operation of sputum suction and flushing with oxygen; the annularly distributed suction holes 7 and functional holes 8 improve the coverage and efficiency of the operation; the closed valve 16 at the end of the guide tube 15 can prevent backflow of contaminants; the three-way valve 9 allows for flexible switching between oxygen and flushing modes to adapt to different clinical needs; the overall structural design takes into account both sputum clearance efficiency and patient airway protection, and is especially suitable for the gentle handling of viscous sputum, reducing the risk of mucosal damage and improving the safety and comfort of lung clearing and sputum removal.

[0028] refer to Figure 1 , Figure 2 and Figure 3 The suction device includes an external suction tube 1, an internal suction tube 4, a suction tube head 2, a suction hole 7, and a connecting tube 2 13;

[0029] By setting up an external suction tube 1, and a suction inner tube 4 fixedly connected inside the external suction tube 1, and a suction head 2 fixedly connected to the end of the external suction tube 1, and connecting the suction head 2 and the suction inner tube 4, the external suction tube 1 can drive the suction head 2 and the suction inner tube 4 into the patient's airway when in use. Then, the sputum in the patient's airway is suctioned out through the suction head 2, and then discharged through the suction inner tube 4, thereby achieving the purpose of suctioning out the sputum in the patient's airway.

[0030] Meanwhile, several suction holes 7 are provided on the suction head 2, and these suction holes 7 are arranged in a ring at equal intervals on the suction head 2. This ensures that the suction head 2 has suction holes 7 distributed in all directions on its outer wall during use, so that the suction head 2 can remove sputum from the patient's respiratory tract through these suction holes 7. Furthermore, all the suction holes 7 are connected to the inner suction tube 4, so that when the suction head 2 is in use, after the suction holes 7 have absorbed the sputum from the patient's respiratory tract, it is transported into the inner suction tube 4 and then discharged from the inner suction tube 4. This achieves the purpose of suctioning sputum from the patient's respiratory tract by working together with the outer suction tube 1 and the inner suction tube 4.

[0031] Secondly, a connecting tube 2 13 is fixedly connected to the end of the suction tube 4, so that during use, the suction tube 1 and the suction tube 4 can be connected to the negative pressure device through the connecting tube 2 13 at the end of the suction tube 4, thereby achieving a negative pressure inside the suction tube 4 and the suction tube head 2, which facilitates the suctioning of sputum in the patient's respiratory tract.

[0032] Example 2:

[0033] refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 The functional mechanism includes a receiving plate 3, a delivery conduit 6, a guide tube 15, a functional tube 5, a flushing tube 10, and an oxygen tube 11;

[0034] By fixing a receiving plate 3 to the other end of the suction tube 1, fixing a functional tube 5 to the top of the receiving plate 3, fixing a number of delivery tubes 6 to the bottom of the receiving plate 3, and setting a number of delivery tubes 6 in a ring at equal intervals inside the suction tube 1, the receiving plate 3 can be fixedly connected to one end of the suction tube 1 during use, and the suction tube 4, functional tube 5 and a number of delivery tubes 6 can be fixedly connected to the suction tube 1. The functional tube 5 is connected to the number of delivery tubes 6 through the receiving plate 3, so that the flushing fluid or oxygen introduced through the functional tube 5 can be guided to the suction tube head 2 through the number of delivery tubes 6, and then guided into the patient's respiratory tract for use.

[0035] Meanwhile, several guide tubes 15 are fixedly connected to the delivery catheter 6, and a closed valve 16 is fixedly connected inside the guide tube 15. Several functional holes 8 are opened on the suction catheter head 2, and these functional holes 8 are also arranged in a ring at equal intervals on the suction catheter head 2, located between several suction holes 7. The guide tubes 15 are all fixedly connected to the functional holes 8. Therefore, when the functional tube 5 is in use, after the rinsing fluid or oxygen is introduced into the delivery catheters 6 through the functional tube 5 and the receiving plate 3, it can then... Several delivery tubes 6 are led out from the side wall of the suction tube head 2 through several functional holes 8, thus guiding them into the patient's airway. Oxygen can oxygenate the patient's airway, while the flushing solution can flush and dilute the viscous sputum in the patient's airway. After the viscous sputum is diluted by the flushing solution, it can be suctioned out through several suction holes 7 in conjunction with the suction tube 4, so as to facilitate the suctioning of viscous sputum in the patient's airway and avoid damage to the patient's airway due to suctioning viscous sputum or the problem of difficulty in suctioning viscous sputum.

[0036] Secondly, a flushing pipe 10 is fixedly connected to the functional pipe 5, and an oxygen pipe 11 is fixedly connected to the side of the flushing pipe 10 on the functional pipe 5. This allows the functional pipe 5 to be fixedly connected to a flushing device through the flushing pipe 10 and to an oxygen supply device through the oxygen pipe 11 during use, thereby achieving the purpose of introducing flushing fluid and oxygen into the functional pipe 5. Furthermore, a connecting pipe 12 is fixedly connected to the ends of both the flushing pipe 10 and the oxygen pipe 11, allowing the flushing pipe 10 and the oxygen pipe 11 to be fixedly connected to the flushing device and the oxygen supply device during use.

[0037] In addition, during the use of several guide tubes 15 and closing valves 16, the closing valves 16 have an automatic closing function. When the flushing equipment and oxygen supply equipment connected to the flushing tube 10 and oxygen tube 11 stop delivering, the closing valves 16 can automatically close to prevent foreign objects in the patient's airway from entering the guide tubes 15. Furthermore, when the sputum is suctioned by negative pressure through several suction holes 7 on the suction tube head 2, the closing valves 16 can close to block the flushing fluid or oxygen in the guide tubes 15 and delivery tubes 6, preventing it from being sucked up by the suction holes 7.

[0038] Example 3:

[0039] refer to Figure 4 and Figure 5 The control mechanism includes a three-way valve 9 and a control knob 14;

[0040] By fixing a three-way valve 9 to the functional tube 5, the flushing tube 10 and the oxygen tube 11 are connected to the functional tube 5 through the three-way valve 9 during use. A control knob 14 is rotatably connected to the three-way valve 9, so that when the three-way valve 9 is in use, the control knob 14 can be rotated to control the connection between the flushing tube 10 and the functional tube 5, or between the oxygen tube 11 and the functional tube 5, or between the flushing tube 10, the oxygen tube 11 and the functional tube 5. Thus, when the functional tube 5 is in use, oxygen or flushing fluid can be delivered to the patient's airway individually through several delivery tubes 6, or oxygen and flushing fluid can be delivered simultaneously. This allows medical staff to choose the appropriate method according to the patient's actual situation, thereby improving the flexibility of the use of the functional tube 5.

[0041] Working principle: Before operation, check that the external suction tube 1, internal suction tube 4, suction tube tip 2, and all connecting parts are intact and undamaged, and ensure that the closure valve 16 is functioning normally; connect the connecting tube 13 at the end of the internal suction tube 4 to the negative pressure suction device, and connect the flushing tube 10 and oxygen tube 11 on the functional tube 5 to the flushing fluid source and oxygen source respectively through their respective connecting tubes 12; at the start of use, the medical staff holds the external suction tube 1 and gently inserts the suction tube tip 2 into the target area of ​​the respiratory tract through the patient's nasal cavity or oral cavity. At this time, the suction port 7 and All functional ports 8 are exposed at the site of sputum accumulation; if the patient's sputum is thin, negative pressure suction can be activated directly, and the sputum is suctioned out after entering the suction tube 4 through the suction port 7; if the sputum is thick and difficult to suction, the flushing and oxygen supply functions need to be activated: by rotating the control knob 14 to adjust the three-way valve 9, the functional tube 5 is connected to the flushing tube 10, the flushing fluid flows into the receiving tray 3 through the functional tube 5, and then is diverted to multiple delivery tubes 6, and sprayed out from the functional port 8 on the suction tube head 2 through the guide tube 15, locally diluting and loosening the sputum adhering to the airway wall; here During the procedure, valve 16 automatically opens under pressure and closes automatically after flushing to prevent reflux. The diluted sputum is then suctioned out through suction port 7 under negative pressure, achieving gentle and effective removal. If the patient requires simultaneous oxygen supply, the three-way valve 9 can be adjusted to connect oxygen tube 11 with functional tube 5, allowing oxygen to be delivered to the respiratory tract along the same path to maintain blood oxygen saturation. Alternatively, the procedure can be switched to a simultaneous flushing and oxygen supply mode, connecting flushing tube 10 and oxygen tube 11 simultaneously to achieve parallel sputum flushing and oxygen delivery. The procedure can be flexibly adjusted according to the characteristics of the sputum and treatment needs. The working state of the three-way valve 9 can be switched by controlling knob 14, and the flow rate and dosage of flushing fluid and oxygen can be adjusted. After use, the negative pressure and flushing oxygen supply equipment should be turned off first, and then the suction tube 1 should be slowly pulled out. The suction tube 4, functional tube 5 and suction tube head 2 should be thoroughly cleaned and disinfected for the next use. The whole process realizes the integrated operation of suctioning, flushing and oxygen supply through integrated design, which not only improves the efficiency of sputum expectoration, but also reduces mucosal damage through controllable flushing and dilution. It is especially suitable for patients with thick sputum and difficulty in expectorating sputum on their own.

[0042] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A respiratory medicine lung-clearing and sputum-expelling device, comprising a suction tube (1), characterized in that, Also includes: The suction mechanism is set on the suction tube (1) and is used to suction sputum in the patient's respiratory tract. The suction mechanism includes a suction inner tube (4) fixedly set inside the suction tube (1). The suction tube head (2) is fixedly set at the end of the suction tube (1), and the suction tube head (2) and the suction inner tube (4) are fixedly set together. The functional mechanism is set on the suction tube (1) and is used to deliver oxygen to the patient's respiratory tract and to flush the sputum in the respiratory tract. The functional mechanism includes a receiving plate (3) fixedly set on the other end of the suction tube (1). A functional tube (5) is fixedly set on the receiving plate (3). Several delivery tubes (6) are also fixedly set on the receiving plate (3). The functional tube (5) is connected to the several delivery tubes (6) through the receiving plate (3). A control mechanism is provided on the function tube (5) for regulating the delivery of oxygen and flushing fluid by the function tube (5) and several delivery conduits (6). The control mechanism includes a three-way valve (9) fixedly provided on the function tube (5).

2. The respiratory medicine lung-clearing and sputum-expelling device according to claim 1, characterized in that, The suction mechanism also includes several suction holes (7) opened on the suction tube head (2), and the several suction holes (7) are distributed in a ring at equal intervals on the suction tube head (2).

3. The respiratory medicine lung-clearing and sputum-expelling device according to claim 2, characterized in that, The suction mechanism also includes a connecting pipe two (13) fixedly installed at one end of the suction tube (4), and the suction tube (4) is connected to the negative pressure device through the connecting pipe two (13).

4. The respiratory medicine lung-clearing and sputum-expelling device according to claim 1, characterized in that, The functional mechanism also includes several guide tubes (15) fixedly disposed on the side wall of the delivery catheter (6), and a closing valve (16) is fixedly disposed at the end of the guide tube (15).

5. The respiratory medicine lung-clearing and sputum-expelling device according to claim 4, characterized in that, The functional mechanism also includes several functional holes (8) opened on the suction tube head (2), and the several functional holes (8) are also distributed in a ring at equal intervals on the suction tube head (2); Furthermore, several of the aforementioned functional holes (8) are not connected to the suction tube head (2).

6. The respiratory medicine lung-clearing and sputum-expelling device according to claim 5, characterized in that, The functional mechanism also includes an oxygen tube (11) fixedly installed on the functional tube (5), and a flushing tube (10) is fixedly installed on the functional tube (5) at the side of the oxygen tube (11). Furthermore, both the flushing pipe (10) and the oxygen pipe (11) are fixedly provided with a connecting pipe (12).

7. A respiratory medicine lung-clearing and sputum-expelling device according to claim 5, characterized in that, Several guide tubes (15) on several delivery conduits (6) are respectively fixedly disposed in several functional holes (8).

8. The respiratory medicine lung-clearing and sputum-expelling device according to claim 1, characterized in that, The control mechanism also includes a control knob (14) that is rotated on the three-way valve (9).