Closed sputum suction tube flushing device capable of preventing aspiration by mistake

Abstract

The utility model discloses a closed sputum suction tube flushing device capable of preventing aspiration by mistake, which comprises a flushing fluid bag and a flow guide tube, a needle-free infusion connector is arranged on a fluid outlet of the flushing fluid bag, the fluid outlet of the flushing fluid bag is connected with an insertion end of the needle-free infusion connector, an access end of the needle-free infusion connector is connected with an adapter, and when the adapter is connected with the access end, the needle-free infusion connector is connected with the flow guide tube. The needleless infusion connector is conducted; the adapter is connected with a flow guide tube, a flow speed regulator is arranged on the flow guide tube, a connector is arranged at the tail end of the flow guide tube and communicated with a flushing opening of the closed sputum suction tube, a communicated air inlet tube is arranged on the flow guide tube between the connector and the flow speed regulator, a cap plug is arranged at the tail end of the air inlet tube, and a one-way diaphragm is arranged in the cap plug. According to the closed sputum suction tube flushing device capable of preventing aspiration, the arranged air inlet tube is matched with negative pressure suction, so that flushing fluid intercepted in the flow guide tube below the flow rate regulator can be completely pumped out, and aspiration caused by the fact that the flushing fluid is pumped into the closed sputum suction tube during sputum suction is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a closed sputum suction tube flushing device for preventing accidental aspiration. Background Art

[0002] Because the closed suction tube adopts a fully closed design, there is no need to disconnect the ventilator or oxygen connection during the suction process, which pollutes the environment less, is less prone to cross infection, and reduces the incidence of ventilator-associated pneumonia. Due to the above advantages, it has been popularized in clinical practice. However, there is no unified standard for the pipeline flushing method of the closed suction tube during use, and no consensus has been reached. The existing flushing methods mainly include syringe-drawn saline flushing method, infusion set connected to saline gravity flushing method, and blood pressure sensor tube connected to saline gravity flushing method. During flushing, the closed suction tube needs to be connected to the negative pressure tube to extract the liquid in the closed suction tube by negative pressure.

[0003] The syringe-drawn saline flushing method is manual and very cumbersome to operate; the infusion set connected to the saline gravity flushing method and the blood pressure sensor tube connected to the saline gravity flushing method use gravity to introduce saline from the flushing port of the closed suction tube, but the flushing fluid in the suction pipeline cannot be cleared out, and the flushing fluid will be brought into the airway when suctioning again, increasing the risk of aspiration.

[0004] The above methods all use existing devices for other purposes to flush the closed suction tube, which has the disadvantages of complicated operation and increased risk of aspiration. Utility Model Content

[0005] 1. Technical problems to be solved:

[0006] In view of the above technical problems, the utility model provides a closed sputum suction tube flushing device which can prevent accidental aspiration.

[0007] 2. Technical solution:

[0008] A closed sputum suction tube flushing device for preventing accidental aspiration comprises a flushing liquid bag and a guide tube, wherein a needle-free infusion connector is arranged on the liquid outlet of the flushing liquid bag, the liquid outlet of the flushing liquid bag is connected to the insertion end of the needle-free infusion connector, the access end of the needle-free infusion connector is connected to an adapter, when the adapter is connected to the access end, the needle-free infusion connector is turned on; the adapter is connected to the guide tube, a flow rate regulator is arranged on the guide tube, a connector is arranged at the end of the guide tube to be connected to the flushing port of the closed sputum suction tube, a connected air inlet pipe is arranged on the guide tube between the connector and the flow rate regulator, a cap is arranged at the end of the air inlet pipe, and a one-way diaphragm is arranged in the cap.

[0009] Furthermore, a flow-stopping clamp is provided on the flow-guiding pipe between the air inlet pipe and the flow rate regulator, and the flow-stopping clamp is arranged between the air inlet pipe and the connecting head.

[0010] Further, a spring and a sealing ring are provided inside the needleless infusion connector, and the spring acts on the sealing ring to block the access end.

[0011] Further, the liquid outlet of the flushing liquid bag is threadedly connected to the external thread of the insertion end of the needleless infusion connector.

[0012] Further, the adapter includes a funnel-shaped outer shell, an inner tube body is provided inside the outer shell, the inner tube body communicates with the liquid outlet at the bottom of the outer shell, and an internal thread is provided at the top opening of the outer shell to connect with the external thread of the access end of the needleless infusion connector, and the inner tube body is inserted into the access end to lift the sealing ring.

[0013] Further, a plurality of liquid leakage holes are provided at a position close to the bottom of the inner tube body.

[0014] Further, a cap is provided on the connector.

[0015] Further, hanging ears are provided at the top of the flushing liquid bag, and a liquid adding port is provided at the bottom.

[0016] 3. Beneficial effects:

[0017] The anti-aspiration closed suction catheter flushing device of the present utility model can completely extract the flushing liquid intercepted in the diversion tube below the flow rate regulator through the air inlet pipe and negative pressure suction, avoiding the aspiration of the flushing liquid into the closed suction catheter during sputum suction and causing aspiration. In addition, a needleless infusion connector is provided on the flushing liquid bag, which is in an automatically sealed state when the external device is disconnected, avoiding the leakage and pollution of the flushing liquid. Description of the drawings

[0018] Figure 1 is the overall structural schematic diagram of the anti-aspiration closed suction catheter flushing device of the present utility model;

[0019] Figure 2 is the cross-sectional view of the adapter of the present utility model;

[0020] Figure 3 is the structural schematic diagram of the existing needleless infusion connector adopted by the present utility model; where A is the access end and B is the insertion end. Specific implementation manners

[0021] The present utility model will be specifically described below with reference to the drawings.

[0022] As shown in Figure 1 to Figure 3 shown,

[0023] Example 1:

[0024] A closed sputum suction tube flushing device for preventing accidental aspiration comprises a flushing liquid bag 1 and a guide tube 2. A needleless infusion connector 3 is arranged on the liquid outlet of the flushing liquid bag 1. The needleless infusion connector 3 is a prior art. A spring and a sealing ring are arranged inside the needleless infusion connector 3. The spring acts on the sealing ring to block the access end. When the access end is not connected to other devices, it is in an automatic blocking state, which can effectively prevent liquid contamination and leakage. The liquid outlet of the flushing liquid bag 1 is connected to the insertion end of the needleless infusion connector 3. The access end of the needleless infusion connector 3 is connected to an adapter 4. When the adapter 4 is connected to the access end, the needleless infusion connector 3 is turned on. The adapter 4 is connected to the guide tube 2. A flow rate regulator 5 is arranged on the guide tube 2. A connector 6 is arranged at the end of the guide tube 2 to connect to the flushing port of the closed sputum suction tube. A connected air inlet pipe 7 is arranged on the guide tube 2 between the connector 6 and the flow rate regulator 5. A cap 8 is arranged at the end of the air inlet pipe 7. A one-way diaphragm is arranged inside the cap 8. It should be noted that the air intake structure composed of the air intake pipe 7, the cap plug 8 and the one-way diaphragm belongs to the prior art. The one-way diaphragm is provided to prevent liquid leakage while maintaining one-way air entry.

[0025] The working principle of the closed suction tube flushing device for preventing misaspiration of this embodiment is as follows: the flushing liquid in the flushing liquid bag 1 enters the closed suction tube from the connector 6 after passing through the needleless infusion connector 3, the adapter 4, and the guide tube 2. The closed suction tube is connected to a negative pressure for suction, and the inside of the closed suction tube is continuously flushed, and the flow rate of the flushing liquid is adjusted by the flow rate regulator 5. When the flushing is stopped, the flow rate regulator 5 can be adjusted to be closed. At this time, if the existing infusion set is used for flushing, a section of flushing liquid will be retained in the infusion tube below the flow rate regulator of the existing infusion set. The main reason is that air cannot enter the section of the infusion tube, and the negative pressure cannot absorb this part of the flushing liquid. This part of flushing fluid is easily brought into the airway when the closed suction tube is used for suction again, increasing the risk of aspiration. For this reason, the present embodiment provides an air intake structure consisting of an air intake pipe 7, a cap plug 8 and a one-way diaphragm on the section of the guide tube. Since air can be taken in, the flushing fluid trapped in this section can be easily drawn away by the negative pressure under the action of negative pressure. In addition, the present embodiment adopts a needle-free infusion connector 3, which can be automatically blocked to effectively prevent contamination and leakage of the drug solution and avoid contamination of the flushing fluid bag 1. The needle-free infusion connector 3 is generally a disposable product, and the flushing fluid bag 1 is generally filled with sterile water or sterile saline, and is a pre-filled product.

[0026] Embodiment 2:

[0027] A stopper clamp 9 is also provided on the flow guide tube 2 between the air inlet tube 7 and the flow rate regulator 5, and the stopper clamp 9 is arranged between the air inlet tube 7 and the connector 6. After the flushing liquid trapped in the flow guide tube 2 below the flow rate regulator 5 is discharged, the stopper clamp 9 is closed, and the passage can be quickly closed manually to prevent the negative pressure from being sucked from the air inlet tube 7 during sputum suction, resulting in a decrease in the negative pressure during sputum suction.

[0028] Example 3:

[0029] The liquid outlet of the flushing liquid bag 1 is threadedly connected to the external thread of the insertion end of the needleless infusion connector 3.

[0030] The adapter 4 includes a funnel-shaped outer shell 41. An inner tube body 42 is provided inside the outer shell 41. The inner tube body 42 communicates with the liquid outlet at the bottom of the outer shell 41. An internal thread 43 is provided at the top opening of the outer shell 41 to connect to the external thread of the access end of the needleless infusion connector 3. The inner tube body 42 is inserted into the access end to lift up the sealing ring. By lifting up the needleless infusion connector 3 with the inner tube body 42 to make it conductive, the threaded connection structure is more stable, avoiding loosening at the connection due to its own gravity.

[0031] A plurality of liquid leakage holes 44 are provided at a position near the bottom of the inner tube body 42, which can guide the flushing liquid between the outer shell 41 and the inner tube body 42 downwards.

[0032] Example 4:

[0033] A cap 10 is provided on the connector 6 to prevent the connector 6 from being contaminated. The top of the flushing liquid bag 1 is provided with a hanging ear 11, which can be hung at a high place, and the bottom is provided with a liquid adding port 12.

[0034] Although the present utility model has been disclosed above with preferred embodiments, they are not used to limit the present utility model. Any person skilled in this art can make various changes or modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the protection scope of the claims of this application.

Claims

1. A closed sputum suction tube flushing device to prevent accidental aspiration, characterized in that: It comprises a flushing liquid bag and a diversion tube, wherein a needle-free infusion connector is arranged on the liquid outlet of the flushing liquid bag, the liquid outlet of the flushing liquid bag is connected to the insertion end of the needle-free infusion connector, the access end of the needle-free infusion connector is connected to the adapter, when the adapter is connected to the access end, the needle-free infusion connector is turned on; the adapter is connected to the diversion tube, a flow rate regulator is arranged on the diversion tube, a connector is arranged at the end of the diversion tube to be connected to the flushing port of a closed sputum suction tube, a connected air inlet pipe is arranged on the diversion tube between the connector and the flow rate regulator, a cap is arranged at the end of the air inlet pipe, and a one-way diaphragm is arranged in the cap.

2. The closed sputum suction tube flushing device for preventing accidental aspiration according to claim 1, characterized in that: A flow-stopping clamp is also provided on the flow-guiding pipe between the air inlet pipe and the flow rate regulator, and the flow-stopping clamp is arranged between the air inlet pipe and the connecting head.

3. The closed sputum suction tube flushing device for preventing accidental aspiration according to claim 1, characterized in that: A spring and a sealing ring are arranged inside the needle-free infusion connector, and the spring acts on the sealing ring to seal the access end.

4. The closed sputum suction tube flushing device for preventing accidental aspiration according to claim 1, characterized in that: The liquid outlet of the flushing liquid bag is threadedly connected to the external thread of the insertion end of the needle-free infusion connector.

5. The closed type sputum suction tube flushing device for preventing accidental aspiration according to claim 4, characterized in that: The adapter includes a funnel-shaped outer shell, an inner tube body is arranged inside the outer shell, the inner tube body is connected to the liquid outlet at the bottom of the outer shell, an inner thread is arranged at the top opening of the outer shell to connect the outer thread of the needle-free infusion connector access end, and the inner tube body is inserted into the access end to lift the sealing ring.

6. The closed type sputum suction tube flushing device for preventing accidental aspiration according to claim 5, characterized in that: The inner tube body is provided with a plurality of liquid leakage holes near the bottom thereof.

7. The closed sputum suction tube flushing device for preventing accidental aspiration according to claim 1, characterized in that: The connecting head is provided with a cap.

8. The closed sputum suction tube flushing device for preventing accidental aspiration according to claim 1, characterized in that: The top of the flushing liquid bag is provided with a hanging ear, and the bottom is provided with a liquid filling port.

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