Single-orifice fool-proof sputum aspirator
By introducing a mechanism to prevent misinsertion and facilitate replacement into the suction device, the problems of incorrect insertion and inconvenient filter replacement are solved, achieving efficient sealing and convenient operation, and improving the practicality of the suction device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN YUEFENG MEDICAL TECH CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-28
AI Technical Summary
Existing suction devices cannot control the negative pressure inside the device, which makes it easy for sputum to leak out, posing a risk of cross-infection. They also lack anti-misinsertion features and are inconvenient to replace filters, resulting in low practicality.
A single-port foolproof suction device was designed, which includes an anti-misinsertion mechanism and a convenient replacement mechanism. The anti-misinsertion mechanism ensures the seal between the tubing and the suction tube through positioning blocks and sealing gaskets, while the convenient replacement mechanism enables easy replacement of the filter cartridge through telescopic springs and arc-shaped clips.
It achieves the anti-misinsertion function of the suction device, improves the sealing between the tubing and the suction tube, avoids sputum leakage, and facilitates filter replacement, thus enhancing the ease of operation and practicality of the suction device.
Smart Images

Figure CN224166654U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of suction device technology, specifically a single-tube foolproof suction device. Background Technology
[0002] Suctioning devices are commonly used to clear secretions from the respiratory tract of patients and keep the airway clear. They are now widely used in clinical medical procedures. Most elderly people suffer from respiratory diseases and often die because they cannot clear debris from their respiratory tract in time. In order to meet market needs, a single-tube foolproof suctioning device is needed.
[0003] Existing suction devices cannot control the negative pressure inside the device, making it easy for sputum to leak out during suctioning, causing cross-infection. Furthermore, existing suction devices typically lack anti-misinsertion features, making it inconvenient for users to insert the tubing into the suction tube, thus hindering operation. In addition, existing suction devices are inconvenient for filter replacement, making it difficult for users to remove the filter from the first chamber for replacement, reducing practicality. Utility Model Content
[0004] The purpose of this utility model is to provide a single-port foolproof suction device to solve the problems mentioned in the background art, such as the suction device usually not having a function to prevent incorrect insertion and the inconvenience of replacing the filter.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a single-port foolproof suction device, comprising a first housing, a second housing mounted on the surface of the first housing, a top plate mounted on the top surfaces of the first and second housings, a filter element disposed inside the first housing, a suction tube disposed inside the first housing, a flexible tube sleeved on the surface of the suction tube, a suction mechanism disposed inside the first and second housings, the suction mechanism comprising a fixing plate, a support plate, an air pump, a base, a collection bottle, and a wiring area, a convenient replacement mechanism disposed on the inner wall of the first housing and the surface of the filter element, the convenient replacement mechanism comprising a telescopic spring, a groove, an arc-shaped slot, and an arc-shaped clip, an anti-misinsertion mechanism disposed on the surface of the suction tube and the inner wall of the flexible tube, the anti-misinsertion mechanism comprising a positioning slot, a positioning block, a pad, and a sealing pad.
[0006] Preferably, the surface of the second housing is provided with a handle, which rotates and engages with the surface of the second housing. The surface of the filter element is provided with an inlet and an outlet. One end of the suction tube passes through the top plate and extends above the top plate. The surface of the top plate is provided with an adjustment knob.
[0007] Preferably, a fixing plate is installed inside the first and second boxes, the fixing plate is fixed to the surface of the suction tube, an air pump is installed inside the first and second boxes, a base is installed on the surface of the first and second boxes, and the fixing plate and the surface of the adjustment knob rotate in relation to each other.
[0008] Preferably, a collection bottle is installed on the surface at the bottom of the fixing plate, and the collection bottle is connected to the inside of the suction tube. A wiring area is installed on the surface of the second box. A support plate is installed inside the first box and the second box, and the support plate is fastened to the surface of the air pump by screws.
[0009] Preferably, the inner wall of the first housing is provided with a groove, and an arc-shaped clip is provided inside the groove. The arc-shaped clip slides and engages with the inner wall of the groove. The surface of the filter element is provided with an arc-shaped slot, and the arc-shaped slot engages with the surface of the arc-shaped clip. A telescopic spring is installed on the surface of the arc-shaped clip, and one end of the telescopic spring is fixed to the inner wall of the groove.
[0010] Preferably, the inner wall of each tubing is provided with a positioning groove, the surface of the suction tube is covered with a pad, and a sealing gasket is adhered to the surface of the pad away from the suction tube. The pad and the sealing gasket are made of silicone and rubber, respectively. The surface of each sealing gasket is equipped with a positioning block for preventing the tubing from falling off, and the positioning block and the positioning groove are engaged with each other.
[0011] Compared with the prior art, the beneficial effects of this utility model are: the single-tube foolproof suction device not only makes it convenient for users to insert the tubing into the surface of the suction tube when using the suction device, making the suction device more convenient to operate, but also makes it convenient for users to pull out the filter from the inside of the first box when using the suction device, making filter replacement more practical.
[0012] 1. With the anti-misinsertion mechanism, when the user inserts the tubing into the surface of the suction tube, the positioning block automatically installs into the corresponding positioning slot. The locking action of the positioning block and the positioning slot prevents the tubing from coming loose from the surface of the suction tube. The combined action of the pad and the sealing pad makes the seal between the tubing and the suction tube more secure, preventing leakage of sputum during suction. At the same time, since there is only one suction tube on the surface of the top plate, the patient can accurately insert the tubing into the surface of the suction tube, realizing the anti-misinsertion function of the suction device. This makes it easier for the user to insert the tubing into the surface of the suction tube when using the suction device, making the suction device more convenient to operate.
[0013] 2. The device features a convenient replacement mechanism. After prolonged use, the filter cartridge needs to be disassembled and replaced to avoid affecting the normal operation of the suction device. When the user needs to replace the filter cartridge, they pull it down. This compresses the telescopic spring inside the groove, causing the arc-shaped locking piece to move away from the surface of the arc-shaped slot, thus pulling the filter cartridge out of the first housing for replacement. After replacement, the user places the filter cartridge into the first and second housings. Under the elastic force of the telescopic spring inside the groove, the arc-shaped locking piece automatically engages with the arc-shaped slot. The combined action of the arc-shaped locking piece and the arc-shaped slot secures the filter cartridge inside the first housing, enabling convenient filter cartridge replacement. This makes it easier for the user to remove the filter cartridge from the first housing for replacement, enhancing its practicality. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a three-dimensional exploded structural diagram of the present invention;
[0016] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;
[0017] Figure 4 This is a side sectional view of the present invention.
[0018] Figure 5 This is a side view of the structural appearance of this utility model;
[0019] Figure 6 This is a schematic diagram of the front cross-sectional structure of this utility model;
[0020] Figure 7 For the present utility model Figure 4 An enlarged structural diagram of the mechanism for easy replacement;
[0021] Figure 8 For the present utility model Figure 6 Enlarged structural diagram of the anti-misinsertion mechanism.
[0022] In the diagram: 1. First housing; 101. Second housing; 102. Top plate; 103. Suction tube; 104. Handle; 105. Filter cartridge; 106. Inlet; 107. Outlet; 108. Hose; 109. Adjustment knob; 2. Suction mechanism; 21. Fixing plate; 22. Support plate; 23. Air pump; 24. Base; 25. Collection bottle; 26. Wiring area; 3. Easy replacement mechanism; 31. Telescopic spring; 32. Groove; 33. Arc-shaped slot; 34. Arc-shaped clip; 4. Anti-misinsertion mechanism; 41. Positioning slot; 42. Positioning block; 43. Pad; 44. Sealing gasket. Detailed Implementation
[0023] 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, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0024] The structure of a single-port foolproof suction device provided by this utility model is as follows: Figure 1 and Figure 2 As shown, the device includes a first housing 1, a second housing 101 mounted on the surface of the first housing 1, a top plate 102 mounted on the top surfaces of both housings 1 and 101, a handle 104 on the surface of the second housing 101 that rotates with the surface of the second housing 101, a filter element 105 inside the first housing 1 with an inlet 106 and an outlet 107, a suction tube 103 inside the first housing 1 with one end penetrating the top plate 102 and extending above it, an adjustment knob 109 on the surface of the top plate 102, a flexible tube 108 covering the surface of the suction tube 103, and a suction mechanism 2 inside both housings 1 and 101. The sputum collection device 2 consists of a fixed plate 21, a support plate 22, an air pump 23, a base 24, a collection bottle 25, and a wiring area 26. The fixed plate 21 is installed inside the first housing 1 and the second housing 101. The fixed plate 21 is fixed to the surface of the suction tube 103. The air pump 23 is installed inside the first housing 1 and the second housing 101. The base 24 is installed on the surface of the first housing 1 and the second housing 101. The fixed plate 21 and the surface of the adjustment knob 109 rotate and cooperate with each other. The collection bottle 25 is installed on the surface at the bottom of the fixed plate 21. The collection bottle 25 is connected to the inside of the suction tube 103. The wiring area 26 is installed on the surface of the second housing 101. The support plate 22 is installed inside the first housing 1 and the second housing 101. The support plate 22 is fastened to the surface of the air pump 23 by screws.
[0025] Furthermore, such as Figure 4 and Figure 7 As shown, the inner wall of the first housing 1 and the surface of the filter element 105 are provided with a convenient replacement mechanism 3. The convenient replacement mechanism 3 includes a telescopic spring 31, a groove 32, an arc-shaped slot 33 and an arc-shaped clip 34. The inner wall of the first housing 1 is provided with a groove 32. The arc-shaped clip 34 is provided inside the groove 32. The arc-shaped clip 34 slides and engages with the inner wall of the groove 32. The surface of the filter element 105 is provided with an arc-shaped slot 33. The arc-shaped slot 33 engages and engages with the surface of the arc-shaped clip 34. The surface of the arc-shaped clip 34 is provided with a telescopic spring 31. One end of the telescopic spring 31 is fixed to the inner wall of the groove 32.
[0026] During implementation, the user pulls down the filter element 105. At this time, the filter element 105 compresses the telescopic spring 31 inside the groove 32, causing the arc-shaped clip 34 to move away from the surface of the arc-shaped slot 33, thereby pulling the filter element 105 out of the first housing 1 for replacement. After replacement, the user puts the filter element 105 into the first housing 1 and the second housing 101. Under the elastic force of the telescopic spring 31 inside the groove 32, the arc-shaped clip 34 automatically snaps into the arc-shaped slot 33. Under the combined action of the arc-shaped clip 34 and the arc-shaped slot 33, the filter element 105 is installed inside the first housing 1, so as to realize the function of convenient filter element replacement of the suction device.
[0027] Furthermore, such as Figure 6 and Figure 8 As shown, the surface of the suction tube 103 and the inner wall of the tubing 108 are provided with an anti-misinsertion mechanism 4. The anti-misinsertion mechanism 4 includes a positioning slot 41, a positioning block 42, a pad 43 and a sealing gasket 44. The inner wall of the tubing 108 is provided with a positioning slot 41. The surface of the suction tube 103 is covered with a pad 43. The surface of the pad 43 away from the suction tube 103 is covered with a sealing gasket 44. The pad 43 and the sealing gasket 44 are made of silicone and rubber, respectively. The surface of the sealing gasket 44 is provided with a positioning block 42 for preventing the tubing 108 from falling off. The positioning block 42 and the positioning slot 41 are engaged with each other.
[0028] During implementation, when the user inserts the tubing 108 onto the surface of the suction tube 103, the positioning block 42 automatically installs into the corresponding positioning slot 41. The locking action between the positioning block 42 and the positioning slot 41 prevents the tubing 108 from coming loose from the surface of the suction tube 103. The combined action of the pad 43 and the sealing pad 44 further enhances the seal between the tubing 108 and the suction tube 103, preventing leakage of sputum during suction. At the same time, since there is only one suction tube 103 on the surface of the top plate 102, the patient can accurately insert the tubing 108 onto the surface of the suction tube 103, thus achieving the function of preventing incorrect insertion of the suction device.
[0029] Working principle: In use, first place the first housing 1 in the designated position. The user installs the top plate 102 on the surface of the first housing 1 and the second housing 101, so that the suction tube 103 on the surface of the fixing plate 21 moves to above the top plate 102. At this time, the adjustment knob 109 on the surface of the fixing plate 21 also moves to above the top plate 102. The user powers on the suction device through the wiring area 26. The user inserts the tubing 108 onto the surface of the suction tube 103, so that the other end of the tubing 108 is inserted into the patient's mouth. By rotating the adjustment knob 109, the power of the fixing plate 21 is adjusted to adjust the suction force. The suction tube creates a negative pressure environment inside the first chamber 1 and the second chamber 101. Air enters the filter element 105 through the inlet 106, is filtered by the filter element 105, and then exits the filter element 105. The filter element 105 filters the air entering the first chamber 1 and the second chamber 101, removing dust. This allows sputum from the patient's mouth to enter the collection bottle 25 through the tubing 108 and the suction tube 103. The collection bottle 25 collects the sputum. The user can easily access the first chamber 1 and the second chamber 101 by rotating the handle 104 on the surface of the second chamber 101.
[0030] Subsequently, when the user inserts the tubing 108 onto the surface of the suction tube 103, the positioning block 42 automatically installs into the corresponding positioning slot 41. The locking action of the positioning block 42 and the positioning slot 41 prevents the tubing 108 from coming loose from the surface of the suction tube 103. The combined action of the pad 43 and the sealing pad 44 enhances the seal between the tubing 108 and the suction tube 103, preventing leakage of sputum during suction. At the same time, since there is only one suction tube 103 on the surface of the top plate 102, the patient can accurately insert the tubing 108 onto the surface of the suction tube 103, thus achieving the function of preventing incorrect insertion of the suction device. This makes it easier for the user to insert the tubing 108 onto the surface of the suction tube 103, making the suction device more convenient to operate.
[0031] Subsequently, after prolonged use, the filter element 105 needs to be disassembled and replaced to avoid affecting the normal use of the suction device. When the user needs to replace the filter element 105, the user pulls the filter element 105 downwards. At this time, the filter element 105 compresses the telescopic spring 31 inside the groove 32, causing the arc-shaped locking piece 34 to move away from the surface of the arc-shaped locking groove 33, thereby pulling the filter element 105 out of the first housing 1 for replacement. After replacement, the user puts the filter element 105 into the first housing 1 and the second housing 1. Inside 01, under the elastic force of the telescopic spring 31 inside the groove 32, the arc-shaped clip 34 automatically snaps into the arc-shaped slot 33. Under the combined action of the arc-shaped clip 34 and the arc-shaped slot 33, the filter element 105 is installed inside the first housing 1, so as to realize the function of convenient replacement of filter element 105 of the suction device. This makes it convenient for the user to pull out the filter element 105 from the inside of the first housing 1 when using the suction device, and replace the filter element 105. The practicality is enhanced, and the use of the suction device is finally completed.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A single-tube foolproof suction device, comprising a first housing (1), characterized in that: A second box (101) is mounted on the surface of the first box (1). A top plate (102) is mounted on the top surfaces of the first box (1) and the second box (101). A filter element (105) is installed inside the first box (1). A suction tube (103) is installed inside the first box (1). A flexible tube (108) is fitted on the surface of the suction tube (103). A suction mechanism (2) is installed inside the first box (1) and the second box (101). The suction mechanism (2) consists of a fixed plate (21), a support plate (22), and an air pump (23). The first housing (1) is composed of a base (24), a collection bottle (25) and a wiring area (26). The inner wall of the first housing (1) and the surface of the filter element (105) are provided with a convenient replacement mechanism (3). The convenient replacement mechanism (3) includes a telescopic spring (31), a groove (32), an arc-shaped slot (33) and an arc-shaped clip (34). The surface of the suction tube (103) and the inner wall of the hose (108) are provided with an anti-misinsertion mechanism (4). The anti-misinsertion mechanism (4) includes a positioning slot (41), a positioning block (42), a pad (43) and a sealing pad (44).
2. The single-tube foolproof suction device according to claim 1, characterized in that: The second housing (101) is provided with a handle (104) on its surface, and the handle (104) rotates with the surface of the second housing (101). The filter element (105) is provided with an inlet (106) on its surface and an outlet (107) on its surface. One end of the suction tube (103) passes through the top plate (102) and extends to the top of the top plate (102). The top plate (102) is provided with an adjustment knob (109) on its surface.
3. The single-tube foolproof suction device according to claim 1, characterized in that: A fixing plate (21) is installed inside the first box (1) and the second box (101). The fixing plate (21) is fixed to the surface of the suction tube (103). An air pump (23) is installed inside the first box (1) and the second box (101). A base (24) is installed on the surface of the first box (1) and the second box (101). The fixing plate (21) and the surface of the adjusting knob (109) rotate in relation to each other.
4. A single-tube foolproof suction device according to claim 3, characterized in that: A collection bottle (25) is installed on the surface of the bottom position of the fixing plate (21). The collection bottle (25) is connected to the inside of the suction tube (103). A wiring area (26) is installed on the surface of the second box (101). A support plate (22) is installed inside the first box (1) and the second box (101). The support plate (22) is fastened to the surface thread of the air pump (23) by screws.
5. A single-tube foolproof suction device according to claim 1, characterized in that: The inner wall of the first housing (1) is provided with grooves (32), and an arc-shaped clip (34) is provided inside the groove (32). The arc-shaped clip (34) slides and engages with the inner wall of the groove (32). The surface of the filter element (105) is provided with arc-shaped slots (33), and the arc-shaped slots (33) engage with the surface of the arc-shaped clip (34). The surface of the arc-shaped clip (34) is provided with a telescopic spring (31), and one end of the telescopic spring (31) is fixed to the inner wall of the groove (32).
6. A single-tube foolproof suction device according to claim 1, characterized in that: The inner wall of each of the tubing (108) is provided with a positioning slot (41). The surface of the suction tube (103) is covered with a pad (43). A sealing gasket (44) is attached to the surface of the pad (43) away from the suction tube (103). The pad (43) and the sealing gasket (44) are made of silicone and rubber, respectively. The surface of the sealing gasket (44) is provided with a positioning block (42) for preventing the tubing (108) from falling off. The positioning block (42) and the positioning slot (41) are engaged with each other.