Flushable closed sputum suction tube
By designing an outer tube mechanism, the problem of difficult operation of closed suction catheters was solved, enabling single-handed operation and improving suction efficiency while ensuring the cleanliness of the suction catheter.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF NAVAL MEDICAL UNIVERSITY OF CHINESE PEOPLES LIBERATION ARMY
- Filing Date
- 2025-02-07
- Publication Date
- 2026-05-05
AI Technical Summary
The existing closed suction catheter has a fixed length of transparent protective sleeve during insertion and removal, which makes operation difficult and requires the use of both hands, thus affecting suction efficiency.
A flushable, closed suction catheter is designed, employing an outer tube mechanism including a limiting component, a connecting component, and a corrugated sleeve. The corrugated sleeve extends and retracts with the suction catheter, simplifying operation.
The design of the outer tube mechanism shortens the operating distance, facilitates one-handed operation by medical staff, improves suctioning efficiency, and ensures the cleanliness of the suction tube.
Smart Images

Figure CN224193830U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of closed suction catheters, specifically a flushable closed suction catheter. Background Technology
[0002] Suctioning catheters include open suctioning catheters and closed suctioning catheters. Closed suctioning catheters consist of a main body, connectors, sputum collection device, negative pressure regulating device, and protective sleeve. The suctioning catheter is inside a transparent protective sleeve, isolated from the outside world, and can achieve uninterrupted mechanical ventilation during suctioning, continuously providing oxygen to the patient and maintaining oxygenation.
[0003] In existing technology, the length of the protective sleeve is fixed. During the reciprocating insertion and withdrawal of the suction tube, the transparent protective sleeve is in a relatively stationary state. In order to ensure that the suction tube does not come into contact with the outside air during the outward movement, the length of the transparent protective sleeve needs to be relatively long. This makes the operation relatively difficult because the medical staff needs to manually pull the suction tube with one hand while holding the transparent protective sleeve near the mouth with the other hand. Utility Model Content
[0004] The purpose of this invention is to provide a flushable, sealed suction tube to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a flushable, sealed suction tube, comprising a suction tube, wherein one end of the outer wall of the suction tube has multiple sets of annularly distributed connecting holes, the multiple sets of connecting holes being equidistantly distributed along the length direction of the suction tube, each set of connecting holes including multiple suction holes, the multiple suction holes being equidistantly distributed in the circumferential direction, and an outer sleeve mechanism connected to the outer wall of the suction tube, the outer sleeve mechanism including a limiting component, a connecting component, and a corrugated sleeve, the limiting component being connected to one end of the corrugated sleeve, and the connecting component being connected to the other end of the corrugated sleeve.
[0006] As a further embodiment of this utility model: the limiting component includes a lower connecting tube sleeved on the outer wall of the suction tube, the outer wall of the lower connecting tube being integrally formed with an outwardly protruding silicone baffle, and the end of the silicone baffle away from the corrugated sleeve having an arc-shaped structure.
[0007] As a further embodiment of this utility model: the connecting assembly includes an upper connecting tube that is threaded to the outer wall of the suction tube. The outer circumference of the upper connecting tube is integrally formed with a hexagonal head, the outer circumference of the suction tube is formed with an external concave thread, and the inner wall of the upper connecting tube is integrally formed with an internal convex thread. The external concave thread and the internal convex thread engage with each other.
[0008] As a further embodiment of this utility model: the upper connecting tube and the lower connecting tube are respectively fixedly connected to both ends of the corrugated sleeve, and the corrugated sleeve is sleeved on the outer wall of the suction tube.
[0009] Compared with the prior art, the beneficial effects of this utility model are:
[0010] 1. By setting up an outer tube mechanism, the corrugated tube can be extended and retracted as the suction tube is pulled out, thereby shortening the distance between the hands during operation and making it easier for medical staff to perform suctioning. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0013] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle.
[0014] In the diagram: 1. Suction tube; 2. Connecting hole; 3. Upper connecting tube; 4. Corrugated sleeve; 5. Lower connecting tube; 6. Hexagonal head; 7. Silicone baffle; 8. Internal convex thread; 9. External concave thread. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figures 1-3 In this embodiment of the present invention, a flushable sealed suction tube includes a suction tube 1. One end of the outer wall of the suction tube 1 has multiple sets of annularly distributed connecting holes 2. The multiple sets of connecting holes 2 are equidistantly distributed along the length direction of the suction tube 1. Each set of connecting holes 2 includes multiple suction holes, which are equidistantly distributed in the circumferential direction. The outer wall of the suction tube 1 is connected to an outer sleeve mechanism. The outer sleeve mechanism includes a limiting component, a connecting component, and a corrugated sleeve 4. The limiting component is connected to one end of the corrugated sleeve 4, and the connecting component is connected to the other end of the corrugated sleeve 4.
[0017] In this embodiment: First, when using the device to suction sputum from the patient's trachea, the outer sleeve mechanism is first connected to the outer wall of the suction tube 1. The end of the suction tube 1 away from the connection hole 2 is inserted into the inner wall of the limiting component until the suction tube 1 passes through the connecting component. Then, the connecting component and the suction tube 1 are threaded together, thus completing the connection between the outer sleeve mechanism and the suction tube 1. Finally, the end of the suction tube 1 is connected to the negative pressure device. Then, the suction tube 1 is inserted into the patient's trachea until the limiting component is against the patient's mouth. Then, the negative pressure device is activated, and the connecting component is pushed to move up and down repeatedly. At this time, the corrugated sleeve 4 is continuously stretched and compressed. The suction tube 1 moves back and forth inside the patient's trachea, thus suctioning out the sputum adhering to the inner wall of the trachea. The sputum enters the suction tube 1 through the suction hole under negative pressure.
[0018] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3 The connecting assembly includes an upper connecting tube 3 that is threaded to the outer wall of the suction tube 1. The outer circumference of the upper connecting tube 3 is integrally formed with a hexagonal head 6, the outer circumference of the suction tube 1 is formed with an external concave thread 9, and the inner wall of the upper connecting tube 3 is integrally formed with an internal convex thread 8. The external concave thread 9 and the internal convex thread 8 engage with each other.
[0019] In this embodiment: During connection, after the end of the suction tube 1 away from the suction hole passes through the connecting assembly, the external concave thread 9 and the internal convex thread 8 gradually approach each other. Then, by rotating the upper connecting tube 3, the upper connecting tube 3 drives the internal convex thread 8 and the external concave thread 9 to engage with each other until they are fully engaged. Then, during the suctioning operation, the suction tube 1 moves back and forth, driving the connecting assembly to move synchronously, and the connecting assembly can move accordingly.
[0020] Please refer to this carefully. Figure 1 and Figure 2 The limiting component includes a lower connecting tube 5 sleeved on the outer wall of the suction tube 1. The outer wall of the lower connecting tube 5 is integrally formed with an outwardly protruding silicone baffle 7. The end of the silicone baffle 7 away from the corrugated sleeve 4 has an arc-shaped structure.
[0021] In this embodiment: after the suction tube 1 is inserted into the patient's trachea, the silicone baffle 7 comes into contact with the patient's mouth. Therefore, during the reciprocating motion of the suction tube 1, the suction tube 1 will not come into direct contact with the external environment, thereby ensuring the cleanliness of the suction tube 1 and preventing the introduction of germs contained in the air.
[0022] Please refer to this carefully. Figure 1 and Figure 2 The upper connecting tube 3 and the lower connecting tube 5 are respectively fixedly connected to the two ends of the corrugated sleeve 4, and the corrugated sleeve 4 is sleeved on the outer wall of the suction tube 1.
[0023] In this embodiment: during the reciprocating motion of the suction tube 1, the corrugated sleeve 4 is continuously stretched and compressed to protect the external suction tube.
[0024] After the device is used up, the connecting assembly and suction tube 1 can be separated, and the outer tube assembly and suction tube 1 can be rinsed and cleaned separately.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A flushable, sealed suction catheter, comprising a suction tube (1), characterized in that, The suction tube (1) has multiple sets of annularly distributed connecting holes (2) at one end of its outer wall. The multiple sets of connecting holes (2) are equidistantly distributed along the length of the suction tube (1). Each set of connecting holes (2) includes multiple suction holes. The multiple suction holes are equidistantly distributed in the circumferential direction. The outer wall of the suction tube (1) is connected to an outer tube mechanism. The outer tube mechanism includes a limiting component, a connecting component, and a corrugated sleeve (4). The limiting component is connected to one end of the corrugated sleeve (4), and the connecting component is connected to the other end of the corrugated sleeve (4).
2. The flushable, sealed suction catheter according to claim 1, characterized in that, The limiting component includes a lower connecting tube (5) sleeved on the outer wall of the suction tube (1). The outer wall of the lower connecting tube (5) is integrally formed with an outwardly protruding silicone baffle (7). The end of the silicone baffle (7) away from the corrugated sleeve (4) has an arc surface structure.
3. The flushable, sealed suction catheter according to claim 2, characterized in that, The connecting assembly includes an upper connecting tube (3) threaded to the outer wall of the suction tube (1). The outer circumference of the upper connecting tube (3) is integrally formed with a hexagonal head (6), the outer circumference of the suction tube (1) is formed with an external concave thread (9), and the inner wall of the upper connecting tube (3) is integrally formed with an internal convex thread (8). The external concave thread (9) and the internal convex thread (8) engage with each other.
4. The flushable, sealed suction catheter according to claim 3, characterized in that, The upper connecting tube (3) and the lower connecting tube (5) are respectively fixedly connected to the two ends of the corrugated sleeve (4), and the corrugated sleeve (4) is sleeved on the outer wall of the suction tube (1).