Closed sputum suction tube

Abstract

The utility model discloses a closed sputum suction tube, which belongs to the technical field of medical instruments and comprises a sputum suction tube body and a negative pressure control valve, one end of the sputum suction tube body is connected with the outlet end of the negative pressure control valve, the inlet end of the negative pressure control valve is provided with a negative pressure joint connected with external negative pressure equipment, and a film protective sleeve is sleeved outside the sputum suction tube body. An isolating valve is arranged at the end part, far away from the negative pressure control valve side, of the sputum suction tube body; a valve core capable of being opened and closed unidirectionally is arranged in the isolating valve; the sputum suction tube body extends into the isolating valve and can move in the axis direction to jack up the valve plate in the valve element; the outlet end of the isolating valve is provided with an adapter substitute, the isolating valve close to the outlet end is communicated with a dosing pipeline, and the isolating valve close to the side of the sputum suction tube body is communicated with a flushing pipeline. The isolating valve is opened and closed under the driving of the sputum suction tube body, manual operation is not needed, the operation convenience and efficiency are improved, the structure is simple, the size and weight of the patient end are reduced, and the use burden of a patient is relieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a closed sputum suction tube. BACKGROUND

[0002] The closed sputum suction tube refers to a sputum suction tool that is not disconnected from a breathing machine and does not stop mechanical ventilation, so that the whole sputum suction process is completed in a closed condition. The purpose of the design of the closed sputum suction tube is to prevent bacterial droplets from spreading in the air, so that the sputum suction tube body is relatively isolated from the external environment, and the purpose of effectively protecting patients and medical staff is achieved. The closed sputum suction tube is composed of a patient end, a sputum suction tube body, and a machine end. The patient end is connected with an artificial airway and mechanical ventilation, and can also complete drug injection operation; the sputum suction tube body is composed of a sputum suction tube and a plastic film, so that the pipeline is relatively isolated from the outside world; the machine end is connected with the suction machine end to complete negative pressure operation, and is a recommended sputum suction method in the current clinic.

[0003] The closed sputum suction tube on the market can increase the design of an isolation valve at the patient end, which can prevent physiological saline from flowing back when the sputum suction is completed and the pipeline is flushed, and can prevent the exhaled gas of the patient from polluting the cleaned sputum suction tube body, thereby prolonging the use time of the closed sputum suction tube and forming a long-acting closed sputum suction tube.

[0004] Patent application No. 2020204171522 discloses a closed sputum suction device. During sputum suction operation, the sputum suction tube body passes through the guide pipe, enters the adapter through the sputum suction control valve, and then reaches the patient's respiratory tract through the tracheal joint. The structure of the sputum suction control valve in the technical solution is relatively complex, which increases the volume and weight of the patient end of the closed sputum suction tube, making the patient end heavy, especially for newborns, which increases the use burden. In addition, the sputum suction control valve in the above technical solution is a manual valve that needs to be manually rotated, which is not convenient for the operation of the operator; at the same time, the patient end adapter of the common closed sputum suction tube on the market is usually installed in a rotary manner, which has a complex structure and also increases the weight of the patient end. SUMMARY

[0005] In view of the problems existing in the prior art, the utility model provides a closed sputum suction tube, which realizes the opening and closing of the isolation valve under the driving of the sputum suction tube body, does not need manual operation, greatly improves the convenience and efficiency of operation, and has a simple structure, effectively reduces the volume and weight of the patient end, and reduces the use burden of the patient.

[0006] The utility model discloses a closed sputum suction tube, which comprises a sputum suction tube body and a negative pressure control valve, one end of the sputum suction tube body is connected with the outlet end of the negative pressure control valve, the inlet end of the negative pressure control valve is provided with a negative pressure connector connected with an external negative pressure equipment, the sputum suction tube body is externally sleeved with a film protective sleeve for protecting the sputum suction tube body, an isolation valve is arranged at the end of the sputum suction tube body away from the negative pressure control valve, and a valve core capable of being opened and closed in one direction is arranged in the isolation valve.

[0007] The axis of the isolation valve coincides with the axis of the sputum suction tube body, the sputum suction tube body extends into the isolation valve and can be moved along the axis direction to lift the valve plate in the valve core.

[0008] The outlet end of the isolation valve is provided with a conversion connector, a drug pipeline is communicatively arranged on the isolation valve close to the outlet end, and a flushing pipeline is communicatively arranged on the isolation valve close to the sputum suction tube body.

[0009] Further, the valve core comprises a mounting portion for being mounted on the inner wall of the isolation valve, a through hole for the sputum suction tube body to penetrate is arranged at the central position of the mounting portion, an elastic valve plate matched with the through hole is arranged in the through hole, a crease is arranged on the elastic valve plate, the elastic valve plate at the upper end of the crease is in contact with the mounting portion, and the elastic valve plate at the lower end of the crease is in abutment with the inner wall of the through hole of the mounting portion. The elastic valve plate can be deformed when subjected to external force, so as to control the opening and closing of the through hole. When in use, the sputum suction tube body can lift the elastic valve plate to extend into the patient's body to perform sputum suction, when the sputum suction is completed, the elastic valve plate is closed under the positive pressure of the breathing machine when the sputum suction tube body is withdrawn, so that the patient end is isolated, manual closing is not needed, convenience and simplicity are achieved, the structure is simple, and the volume and weight of the patient end are reduced.

[0010] Further, the conversion connector is of a Y-shaped structure and comprises a breathing machine interface, a connecting interface and a tracheal cannula interface, and the conversion connector is inserted into the outlet end of the isolation valve through the connecting interface. The connection requirements between different equipment in the sputum suction process are met, the spatial distribution is reasonable, interference between the equipment is avoided, the stability and reliability of the connection are ensured, the connection mode of insertion is adopted, the structure is simple, and the structure weight is reduced.

[0011] Further, the elastic valve plate comprises a central portion and side ear portions arranged on the two sides of the central portion respectively, and the central portion and the side ear portions form a gold ingot-shaped structure. The structure enables the elastic valve plate to more evenly distribute pressure when subjected to external force, increases the contact area of the valve plate and the through hole, and thus enhances the sealing performance between the valve plate and the inner wall of the through hole.

[0012] Further, the extending end of the sputum suction tube body is provided with a flexible section. When penetrating into the patient's airway, especially the airway of a newborn baby, the flexible section can prevent scratching and reduce discomfort.

[0013] Further, the two ends of the thin film protective sleeve are sleeved on the sputum suction tube body through the locking buckle.

[0014] Further, a joint protective sleeve is arranged on the outlet end of the negative pressure control valve through a connecting rope, and a separation clamp is arranged on the connecting rope. The design of the joint protective sleeve can effectively prevent the joint of the negative pressure control valve from being physically damaged by accidental impact, friction or the like during transportation, storage or use, thereby ensuring the integrity and functionality of the joint.

[0015] The utility model has the advantages and technical effects that: due to the above technical scheme, the opening and closing of the isolation valve is realized under the driving of the sputum suction tube body, manual operation is not needed, the convenience and efficiency of operation are greatly improved, the structure is simple, the volume and weight of the patient end are effectively reduced, and the use burden of the patient is reduced. The structure design of the closed sputum suction tube ensures the airtightness of the whole sputum suction process, simplifies the connection process of the negative pressure equipment and the external administration and flushing pipeline, and enables medical staff to quickly and accurately perform sputum suction operation. The utility model has the advantages of simple structure, small size, light weight, convenient and fast operation, and can reduce the discomfort of the newborn. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the whole structure schematic view provided by the utility model embodiment;

[0017] Fig. 2 It is the sputum suction tube body top-up elastic valve piece action schematic view provided by the utility model embodiment;

[0018] Fig. 3 It is the valve core structure schematic view provided by the utility model embodiment;

[0019] Fig. 4 It is the conversion joint structure schematic view provided by the utility model embodiment.

[0020] In the drawing: 1, sputum suction tube body; 1-1, flexible section; 2, negative pressure control valve; 3, negative pressure joint; 4, thin film protective sleeve; 5, isolation valve; 5-1, valve core; 5-2, mounting part; 5-3, elastic valve piece; 5-4, crease; 5-5, center part; 5-6, side ear part; 6, conversion joint; 6-1, breathing machine interface; 6-2, connecting interface; 6-3, tracheal intubation interface; 7, administration pipeline; 8, flushing pipeline; 9, locking buckle; 10, joint protective sleeve; 11, separation clamp. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with embodiments.

[0022] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] As shown in Figs. 1 to 4 The utility model provides a closed sputum suction tube, including sputum suction tube 1 and negative pressure control valve 2, sputum suction tube 1 one end is connected with the export end of negative pressure control valve 2, the import end of negative pressure control valve 2 is provided with the negative pressure connector 3 connected with external negative pressure equipment, the sputum suction tube 1 outside is equipped with the film protective sleeve 4 for protecting sputum suction tube 1, the sputum suction tube 1 end portion of far away negative pressure control valve 2 side is provided with the isolating valve 5, the isolating valve 5 is provided with the valve core 5-1 that can open and close unilaterally in,

[0024] The axis of the isolating valve 5 coincides with the axis of the sputum suction tube 1, the sputum suction tube 1 is inserted into the isolating valve 5 and can be moved along the axial direction to lift the valve core 5-1 in the valve piece;

[0025] The outlet end of the isolating valve 5 is provided with a conversion joint 6, a drug line 7 is provided on the isolating valve 5 near the outlet end, and a flushing line 8 is provided on the isolating valve 5 near the sputum suction tube 1 side.

[0026] Further, the valve core 5-1 includes a mounting portion 5-2 for mounting on the inner wall of the isolating valve 5, a through hole for the sputum suction tube 1 to pass through is provided at the center position of the mounting portion 5-2, an elastic valve piece 5-3 cooperating with the through hole is provided in the through hole, specifically, the elastic valve piece 5-3 can be made of elastic materials such as silica gel or rubber, a crease 5-4 is provided on the elastic valve piece 5-3, the elastic valve piece 5-3 at the upper end of the crease 5-4 is in contact with the mounting portion 5-2, and the elastic valve piece 5-3 at the lower end of the crease 5-4 abuts against the inner wall of the through hole of the mounting portion 5-2. The elastic valve piece 5-3 can be deformed when subjected to external force, thereby controlling the opening and closing of the through hole. When in use, the sputum suction tube 1 can lift the elastic valve piece 5-3 to extend into the patient's body for sputum suction, and when the sputum suction is completed, the elastic valve piece 5-3 is closed under the positive pressure of the breathing machine when the sputum suction tube 1 is withdrawn, without the need for manual closing, which is convenient and simple in structure, reduces the volume and weight of the patient end.

[0027] Further, the conversion joint 6 is a Y-shaped structure, including a ventilator interface 6-1, a connecting interface 6-2 and a tracheal cannula interface 6-3, and the conversion joint 6 is inserted into the outlet end of the isolation valve 5 through the connecting interface 6-2. The connection requirements between different devices during the sputum suction process are met, the space distribution is reasonable, the interference between each other is avoided, and the stability and reliability of the connection are ensured. At the same time, the plug-in connection mode is adopted, so that the structure is simple and the structure weight is reduced.

[0028] Further, the elastic valve plate 5-3 includes a center part 5-5 and side ear parts 5-6 respectively arranged on both sides of the center part, and the center part 5-5 and the side ear parts 5-6 form a gold ingot-shaped structure. This structure enables the elastic valve plate 5-3 to more evenly distribute pressure when subjected to external force, increases the contact area of the valve plate and the through hole, and thus enhances the sealing performance between the valve plate and the inner wall of the through hole.

[0029] Further, the extending end of the sputum suction tube body 1 is provided with a flexible section 1-1, which can be made of PVC or other materials, and the flexible section has a soft ring structure and is bonded to the extending end of the sputum suction tube body. When deep into the patient's airway, especially the airway of a newborn baby which is relatively delicate, the flexible section can prevent scratching and reduce discomfort.

[0030] Further, the two ends of the film protective sleeve 4 are sleeved on the sputum suction tube body 1 through a mold locking buckle 9. Specifically, the mold locking buckle 9 includes a mounting base and a fixing sleeve ring sleeved outside the mounting base, a through hole for the sputum suction tube body 1 to pass through is arranged in the mounting base, and the end of the film protective sleeve 4 is arranged on the outer wall of the mounting base and fixed by the fixing sleeve ring.

[0031] Further, a joint protective sleeve 10 is arranged on the outlet end of the negative pressure control valve 2 through a connecting rope, and a separation clamp 11 is arranged on the connecting rope. The design of the joint protective sleeve 10 can effectively prevent the joint of the negative pressure control valve 2 from being accidentally impacted, rubbed or physically damaged during transportation, storage or use, thereby ensuring the integrity and functionality of the joint.

[0032] When in use, the sputum suction tube body 1 can push open the elastic valve plate 5-3, and the tracheal cannula interface 6-3 of the conversion joint 6 is inserted into the patient's body to perform sputum suction. When the sputum suction is finished, the sputum suction tube body 1 is pulled back, the elastic valve plate 5-3 is closed under the positive pressure of the ventilator, and is isolated from the patient end to form a seal. When the flushing pipeline 8 is used to flush the sputum suction tube body 1, it can prevent the flushing liquid from flowing back to the patient's respiratory tract, and at the same time avoid the pollution of the exhaled gas of the patient to the sputum suction tube body 1, thereby prolonging the use time.

[0033] Since the above technical scheme, the opening and closing of the isolation valve 5 is realized under the driving of the sputum suction tube body 1, manual operation is not required, the convenience and efficiency of operation are greatly improved, the structure is simplified, the volume and weight of the patient end are effectively reduced, and the use burden of the patient is reduced. The structure design of the closed sputum suction tube ensures the closed nature of the whole sputum suction process, simplifies the connection process of the negative pressure equipment and the external drug and flushing pipeline 8, so that the medical staff can quickly and accurately perform the sputum suction operation. It has the advantages of simple structure, small size, light weight, convenient and fast operation, and can reduce the discomfort of the newborn.

[0034] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A closed sputum suction tube, comprising a sputum suction tube body and a negative pressure control valve, one end of the sputum suction tube body being connected to an outlet end of the negative pressure control valve, an inlet end of the negative pressure control valve being provided with a negative pressure connector connected to an external negative pressure device, and a film protective sleeve for protecting the sputum suction tube body being sleeved outside the sputum suction tube body, characterized in that, The isolating valve is arranged at the end of the sputum suction tube body away from the negative pressure control valve, and a one-way opening and closing valve core is arranged in the isolating valve; The axis of the isolating valve coincides with the axis of the sputum suction tube body, the sputum suction tube body extends into the isolating valve and can move along the axis direction to lift the valve piece in the valve core; The outlet end of the isolating valve is provided with a conversion joint, a drug pipeline is arranged in communication on the isolating valve close to the outlet end, and a flushing pipeline is arranged in communication on the isolating valve close to the sputum suction tube body.

2. The closed suction tube of claim 1, wherein, The valve core comprises a mounting portion for mounting on the inner wall of the isolating valve, a through hole for the sputum suction tube body to penetrate is arranged at the center position of the mounting portion, an elastic valve piece cooperating with the through hole is arranged in the through hole, a fold is arranged on the elastic valve piece, the elastic valve piece at the upper end of the fold is in contact with the mounting portion, and the elastic valve piece at the lower end of the fold is in abutment with the inner wall of the through hole of the mounting portion.

3. The closed suction tube according to claim 1 or 2, characterized in that The conversion joint is a Y-shaped structure comprising a breathing machine interface, a connecting interface and a tracheal cannula interface, and the conversion joint is inserted into the outlet end of the isolating valve through the connecting interface.

4. The closed suction tube of claim 2, wherein, The elastic valve piece comprises a center portion and side ear portions arranged on both sides of the center portion respectively, and the center portion and the side ear portions form a gold ingot-shaped structure.

5. The closed suction tube of claim 1, wherein, The extending end of the sputum suction tube body is provided with a flexible section.

6. The closed suction tube of claim 1, wherein, The two ends of the film protective sleeve are sleeved on the sputum suction tube body through mold locking buckles.

7. The closed suction tube of claim 1, wherein, A joint protective sleeve is arranged on the outlet end of the negative pressure control valve through a connecting rope, and a separation clamp is arranged on the connecting rope.

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