Sputum suction device for critical nursing
By adjusting the position of the sputum outlet and suction port of the suction device and the design of the flow guiding structure, the problem of sputum adhering to the negative pressure device was solved, achieving effective sputum guidance and improving the reliability of the device, thus improving the suction effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2026-04-03
AI Technical Summary
In existing suction devices, sputum easily adheres to the negative pressure port, affecting the normal operation of the negative pressure device. Furthermore, the sputum outflow path is too close to the suction path, which may cause sputum to be sucked into the negative pressure device.
Design a sputum suction device for critical care, using an L-shaped negative pressure extension tube and a sputum collection extension tube. Adjust the positions of the sputum outflow port and the suction port to keep them as far apart as possible, and set an elliptical slope and an annular baffle at the lower end of the sputum collection extension tube for guiding and protection.
This effectively prevents sputum from flowing into the suction port of the negative pressure equipment, ensuring the normal operation of the negative pressure equipment and improving the suction effect and equipment reliability.
Smart Images

Figure CN224070889U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a medical device, specifically, to a suction device for intensive care. Background Technology
[0002] A suction device is a medical device used to clear airway secretions in critically ill or comatose patients, aiming to maintain airway patency and reduce the risk of complications. Currently, there are many sputum suction devices related to critical care on the market, such as the sputum suction device for intensive care units disclosed in Chinese patent CN120393146A and the sputum suction device for intensive care units disclosed in Chinese patent CN120204489A. However, in these sputum suction devices, the top of the sputum collection container has a suction port and a negative pressure port, which are connected to the suction tube and the negative pressure tube respectively. The suction tube and the negative pressure tube are vertically inserted into the sputum collection container. The suction tube is used to suction sputum from the patient, and the negative pressure tube is used to connect to the negative pressure equipment, so that a negative pressure environment is formed inside the sputum collection container. Due to the small size of the sputum collection container, the distance between the suction port and the negative pressure port is also small. In actual use, during the sputum fall, some sputum may be directly sucked towards the negative pressure port. Although the negative pressure port is usually equipped with a one-way valve or other anti-overflow mechanism to prevent sputum from entering the negative pressure equipment, the sputum has a certain viscosity and will remain at the negative pressure port, affecting the normal outward suction of the negative pressure equipment.
[0003] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a suction device for critical care.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A sputum suction device for intensive care includes a negative pressure tube, a suction tube, a main unit, and a sputum collection container. The main unit is provided with a corresponding slot for the sputum collection container. The sputum collection container includes a container body and a top cover. The upper side of the top cover is provided with a negative pressure connector and a sputum collection connector. The main unit is provided with an air suction connector. The negative pressure connector is connected to the air suction connector through a negative pressure tube. The sputum collection connector is connected to the suction tube. The negative pressure connector is close to the center of the top cover, and the sputum collection connector is close to the edge of the top cover. The lower side of the top cover is provided with a negative pressure extension tube and a sputum collection extension tube. The sputum collection extension tube is vertically arranged and its upper end is connected to the sputum collection connector. The negative pressure extension tube is an L-shaped connecting tube. The upper end of the vertical part of the L-shaped connecting tube is connected to the negative pressure connector, and the horizontal part of the L-shaped connecting tube is away from the sputum collection extension tube.
[0007] The lower part of the outer wall of the sputum collection extension tube is tangent to the inner wall of the canister; the lower end of the sputum collection extension tube is provided with an elliptical bevel to form a tip, and the side of the sputum collection extension tube near the tip is attached to the inner wall of the canister.
[0008] The horizontal section of the L-shaped connecting tube is equipped with an annular baffle, the edge of which is bent away from the direction of the sputum collection extension tube.
[0009] The can is transparent and has graduation markings on the outside. The top of the can is detachably connected to the lid.
[0010] The outer top of the tank body is provided with external threads, and the inner wall of the top cover is provided with internal threads. The top cover and the tank body are connected by threads.
[0011] An upper sealing gasket is installed inside the top cover, and an annular platform is installed on the outside of the tank body. A lower sealing gasket is installed on the annular platform. When the top cover and the tank body are assembled, the lower end of the top cover abuts against the lower sealing gasket, and the upper end of the tank body abuts against the upper sealing gasket.
[0012] The negative pressure connector, sputum collection connector, and air extraction connector are all constricted connectors, and each constricted connector has several raised rings on its outer wall.
[0013] The main unit includes a housing and a suction mechanism located inside the housing. The housing is equipped with a power cord, adjustment knob, power switch, and vacuum gauge.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a sputum suction device for critical care. By adjusting the positions of the negative pressure connector and the sputum collection connector, and by adopting an L-shaped negative pressure extension tube, the sputum outlet is located at the lower end of the sputum collection extension tube, and the suction port of the negative pressure extension tube is located at the end of the horizontal pipe and is set laterally, so that the sputum outlet and the suction port face different directions. Moreover, the suction port of the negative pressure extension tube is away from the sputum outlet of the sputum collection extension tube, so that the suction port of the negative pressure extension tube and the sputum outlet of the sputum collection extension tube are kept as far apart as possible, so as to prevent the sputum flowing out of the sputum collection extension tube from being sucked to the suction port of the negative pressure extension tube and sticking to the suction port of the negative pressure extension tube. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the sputum collection cup in this utility model.
[0017] In the diagram: 1. Main unit; 2. Sputum collection container; 3. Adjustment knob; 4. Power switch; 5. Vacuum gauge; 6. Air extraction connector; 7. Sputum collection connector; 8. Negative pressure connector; 9. Lower sealing gasket; 10. Top cover; 11. Container body; 12. Sputum collection extension tube; 13. Negative pressure extension tube; 14. Elliptical inclined surface; 15. Annular baffle. Detailed Implementation
[0018] The technical solution of this utility model will be further described in detail below through specific embodiments.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.
[0020] like Figure 1-2 As shown, a sputum suction device for intensive care includes a negative pressure tube, a suction tube, a main unit 1, and a sputum collection container 2. The main unit 1 is provided with a placement slot for the sputum collection container 2. The sputum collection container 2 includes a container body 11 and a top cover 10. The upper side of the top cover 10 is provided with a negative pressure connector 8 and a sputum collection connector 7. The main unit 1 is provided with a suction connector 6. The negative pressure connector 8 is connected to the suction connector 6 through a negative pressure tube. The sputum collection connector 7 is connected to the suction tube. The negative pressure connector 8 is close to the center of the top cover 10, and the sputum collection connector 7 is close to the edge of the top cover 10. The lower side of the top cover 10 is provided with a negative pressure extension tube 13 and a sputum collection extension tube 12. The sputum collection extension tube 12 is vertically arranged and its upper end is connected to the sputum collection connector 7. The negative pressure extension tube 13 is an L-shaped connecting tube. The upper end of the vertical part of the L-shaped connecting tube is connected to the negative pressure connector 8, and the horizontal part of the L-shaped connecting tube is away from the sputum collection extension tube 12. Specifically, the main unit 1 adopts a common electric suction device main unit 1, which performs suction operations by connecting to a power source. The main unit 1 is equipped with common suction structures, such as a vacuum pump. The suction tube and negative pressure tube adopt common commercially available suction connection tubes and negative pressure connection tubes, which are not shown in the figure. The internal mechanism of the main unit 1, the suction tube and negative pressure tube, etc. have not been improved. Their specific structure will not be described in detail.
[0021] This sputum suction device for intensive care, by adjusting the positions of the negative pressure connector 8 and the sputum collection connector 7, and by using an L-shaped negative pressure extension tube 13, with the sputum outlet located at the lower end of the sputum collection extension tube 12 and the suction port located laterally at the end of the horizontal pipe, ensures that the sputum outlet and suction port face different directions. Furthermore, the suction port of the negative pressure extension tube 13 is away from the sputum outlet of the sputum collection extension tube 12, so that the suction port of the negative pressure extension tube 13 and the sputum outlet of the sputum collection extension tube 12 are kept as far apart as possible, preventing the sputum flowing out of the sputum collection extension tube 12 from being sucked to the suction port of the negative pressure extension tube and sticking to the suction port of the negative pressure extension tube 13.
[0022] In one embodiment, the lower part of the outer wall of the sputum collection extension tube 12 is tangent to the inner wall of the canister 11; the lower end of the sputum collection extension tube 12 is provided with an elliptical inclined surface 14 to form a tip, and the side of the sputum collection extension tube 12 near the tip is attached to the inner wall of the canister 11, so that the sputum flowing out from the lower end of the sputum collection extension tube can flow down along the inner wall of the canister 11, and the sputum is guided along the inner wall of the canister 11 and the tip formed by the elliptical inclined surface 14.
[0023] In one embodiment, the horizontal portion of the L-shaped connecting pipe is provided with an annular baffle 15. The edge of the annular baffle 15 is bent away from the sputum collection extension pipe 12, and the annular baffle further protects the air extraction port of the L-shaped connecting pipe. Preferably, commercially available one-way valves, anti-overflow mechanisms, etc., can also be installed on the L-shaped connecting pipe.
[0024] In one embodiment, the can 11 is a transparent can with scale markings on the outside for easy observation. The upper end of the can 11 is detachably connected to the top cover 10 for easy disassembly.
[0025] In one embodiment, the outer top of the tank body 11 is provided with external threads, and the inner wall of the cover 10 is provided with internal threads. The cover 10 and the tank body 11 are threaded together, which facilitates disassembly.
[0026] In one embodiment, an upper sealing gasket is provided inside the upper cover 10, and an annular platform is provided on the outside of the tank body 11. A lower sealing gasket 9 is provided on the annular platform. When the upper cover 10 and the tank body 11 are assembled, the lower end of the upper cover 10 abuts against the lower sealing gasket 9, and the upper end of the tank body 11 abuts against the upper sealing gasket, ensuring a sealed connection between the upper cover and the tank body.
[0027] In one embodiment, the negative pressure connector 8, the sputum collection connector 7, and the suction connector 6 are all constricted connectors, which facilitates the connection of the suction tube and the connector. Each constricted connector has several protruding rings on its outer wall to prevent slippage.
[0028] In one embodiment, the main unit 1 includes a housing and a suction mechanism disposed inside the housing. The housing is equipped with a power cord, an adjustment knob 3, a power switch 4, and a vacuum gauge 5. Specifically, the main unit and its related suction mechanism, circuit connections, circuit controls, etc., all adopt existing technologies.
[0029] The above embodiments can be combined with each other.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A sputum suction device for intensive care, comprising a negative pressure tube, a suction tube, a main unit, and a sputum collection container, characterized in that: The main unit is equipped with a corresponding slot for placing the sputum collection container. The sputum collection container includes a container body and a top cover. The upper side of the top cover is equipped with a negative pressure connector and a sputum collection connector. The main unit is equipped with an air suction connector. The negative pressure connector is connected to the air suction connector through a negative pressure pipe. The sputum collection connector is connected to the suction tube. The negative pressure connector is close to the center of the top cover, and the sputum collection connector is close to the edge of the top cover. The lower side of the top cover is equipped with a negative pressure extension tube and a sputum collection extension tube. The sputum collection extension tube is vertically arranged and its upper end is connected to the sputum collection connector. The negative pressure extension tube is an L-shaped connecting tube. The upper end of the vertical part of the L-shaped connecting tube is connected to the negative pressure connector, and the horizontal part of the L-shaped connecting tube is away from the sputum collection extension tube.
2. The sputum suction device for intensive care according to claim 1, characterized in that: The lower part of the outer wall of the sputum collection extension tube is tangent to the inner wall of the canister; the lower end of the sputum collection extension tube is provided with an elliptical bevel to form a tip, and the side of the sputum collection extension tube near the tip is attached to the inner wall of the canister.
3. The sputum suction device for intensive care according to claim 2, characterized in that: The horizontal section of the L-shaped connecting tube is equipped with an annular baffle, the edge of which is bent away from the direction of the sputum collection extension tube.
4. The sputum suction device for intensive care according to claim 3, characterized in that: The can is transparent and has graduation markings on the outside. The top of the can is detachably connected to the lid.
5. The sputum suction device for intensive care according to claim 4, characterized in that: The outer top of the tank body is provided with external threads, and the inner wall of the top cover is provided with internal threads. The top cover and the tank body are connected by threads.
6. The sputum suction device for intensive care according to claim 5, characterized in that: An upper sealing gasket is installed inside the top cover, and an annular platform is installed on the outside of the tank body. A lower sealing gasket is installed on the annular platform. When the top cover and the tank body are assembled, the lower end of the top cover abuts against the lower sealing gasket, and the upper end of the tank body abuts against the upper sealing gasket.
7. The sputum suction device for intensive care according to claim 6, characterized in that: The negative pressure connector, sputum collection connector, and air extraction connector are all constricted connectors, and each constricted connector has several raised rings on its outer wall.
8. The sputum suction device for intensive care according to claim 7, characterized in that: The main unit includes a housing and a suction mechanism located inside the housing. The housing is equipped with a power cord, adjustment knob, power switch, and vacuum gauge.
Citation Information
Patent Citations
Nursing sputum suction device for intensive care unit
CN120204489A
Nursing sputum suction device for intensive care unit
CN120393146A