Positive and negative pressure device applied to subglottic suction tube

Abstract

The utility model provides a positive and negative pressure device applied to a subglottic suction tube, which comprises a casing, a liquid collecting vessel and a humidifier, the liquid collecting vessel and the humidifier are arranged inside the casing, the casing is provided with an oxygen inlet interface, a negative pressure interface and a mixing interface, the oxygen inlet interface is connected with the humidifier through a first pipeline, the first pipeline is provided with a pump body, and the negative pressure interface is connected with the mixing interface through a second pipeline. The mixing connector is connected with the first end of a three-way electromagnetic valve, the second end and the third end of the three-way electromagnetic valve are connected with the liquid collecting vessel and the humidifier respectively, the negative pressure connector is connected with the liquid collecting vessel through a second pipeline, and a pressure detection meter connected with the second pipeline is arranged outside the machine shell. The positive and negative pressure device is combined with a subglottic suction tube, so that the aspiration and pneumonia risks of a tracheostomy patient are effectively reduced. The device has positive pressure ventilation and humidification functions, positive pressure ventilation with proper oxygen flow can promote recovery of the swallowing function, continuous and effective suction can be achieved after humidification, the problem that sputum is too much, thick and difficult to clean is solved, the comfort level of a patient is remarkably improved, and comprehensive nursing is provided for the tracheotomy patient.

Description

Technical Field

[0001] The utility model relates to a positive and negative pressure device applied to a subglottic suction tube. Background Art

[0002] Tracheostomy tubes are often used in the rescue and treatment of critically ill patients, especially in post-tracheotomy care. After tracheotomy, patients cannot breathe through the natural airway, so a subglottic tracheostomy tube is needed to maintain the breathing passage. However, there are some problems with the existing subglottic suction tube during use.

[0003] First, the sputum pool above the airbag is prone to accumulating saliva, sputum and reflux, which may become a new source of infection or flow into the lungs along the gap between the airbag and the tracheal wall, aggravating lung infection. Second, existing suction devices often cannot continuously and effectively suck secretions above the airbag, especially when the secretions are thick or there are sputum crusts, the suction tube is easily blocked and cannot be continuously sucked.

[0004] Therefore, it is necessary to make further improvements. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned problems. We provide a positive and negative pressure device applied to a subglottic suction tube. The positive and negative pressure device is used in conjunction with the subglottic suction tube to solve the problems of saliva, sputum and reflux that are easily accumulated above the air bag. Positive pressure ventilation with appropriate oxygen flow also plays a role in improving the swallowing function of tracheotomy patients.

[0006] To achieve the above-mentioned purpose, the utility model provides a positive and negative pressure device applied to a subglottic suction tube, which includes a casing, a liquid collecting dish and a humidifier. The liquid collecting dish and the humidifier are arranged inside the casing. The casing is provided with an oxygen inlet interface, a negative pressure interface and a mixing interface. The oxygen inlet interface is connected to the humidifier through a first pipe. A pump body is provided on the first pipe. The mixing interface is connected to the first end of a three-way solenoid valve. The second end and the third end of the three-way solenoid valve are respectively connected to the liquid collecting dish and the humidifier. The negative pressure interface is connected to the liquid collecting dish through a second pipe. A pressure detection gauge connected to the second pipe is provided on the outside of the casing.

[0007] Preferably, a weighing unit is disposed inside the housing, and the weighing unit is used to support the liquid collecting dish to monitor its weight.

[0008] Preferably, the liquid collecting dish comprises a liquid collecting shell and a cover body, the cover body covers the opening of the liquid collecting shell and seals the liquid collecting shell, and the cover body is provided with a first interface and a second interface for connecting the second pipeline and the second end of the three-way solenoid valve.

[0009] Preferably, a limit stop wall is arranged around the weighing unit in the casing, and the limit stop wall can limit the movement of the liquid collecting dish.

[0010] Preferably, an openable door is provided on the side of the housing, and the liquid collecting dish and the humidifier can be accessed by opening the door.

[0011] Preferably, sterile water or expectorant solution is stored inside the humidifier.

[0012] Preferably, a switch, a negative pressure control knob and a pump control knob are arranged outside the casing.

[0013] Compared with the background technology, the utility model has the following effects: the positive and negative pressure device is used in conjunction with the subglottic suction tube to solve the problems of saliva, sputum and reflux easily accumulated above the air bag, oral secretions not easily flowing down the sputum pool and the inability of existing suction devices to continuously and effectively attract these substances, and the utility model can have a humidification function to provide humidified oxygen, and at the same time positive pressure ventilation is provided to the oral cavity to humidify the secretions in the oral cavity, promote the secretions in the oral cavity to flow down the sputum pool, and then be attracted to the liquid collection dish through negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the positive and negative pressure device of an embodiment of the utility model. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0016] Please see Figure 1The present embodiment provides a positive and negative pressure device for a subglottic suction tube, which includes a housing 1, a liquid collecting dish 2 and a humidifier 3. The liquid collecting dish 2 and the humidifier 3 are arranged inside the housing 1. The housing 1 is provided with an oxygen inlet interface 4, a negative pressure interface 5 and a mixing interface 6. The oxygen inlet interface 4 is connected to the humidifier 3 through a first pipe 7. A pump body 8 is provided on the first pipe. The mixing interface 6 is connected to a first end of a three-way solenoid valve 9. The second end and the third end of the three-way solenoid valve are respectively connected to the liquid collecting dish and the humidifier. The negative pressure interface 5 is connected to the liquid collecting dish 2 through a second pipe 10. A pressure detection gauge 11 connected to the second pipe is provided outside the housing 1. The pressure detection gauge can monitor the negative pressure of the second pipe, so that the user can check it at any time to avoid the pressure being too low to cause the sputum to be unable to be sucked out, and to avoid the pressure being too high to damage the airway mucosa. When the positive and negative pressure device is working, oxygen is first drawn into the humidifier through the pump body to humidify the oxygen, and then output from the mixing interface to the subglottal suction tube, and ventilated to the oral cavity through positive pressure to humidify the oral secretions, so that the secretions can easily flow down and gather, so as to facilitate subsequent suction. It should be noted that at this time, the three-way solenoid valve closes the second end and connects the first end and the third end. When humidification is completed, the three-way solenoid valve closes the third end and connects the first end and the second end. At this time, the negative pressure device is connected through the negative pressure interface, and the secretions are sucked from the mixing interface and stored in the liquid collection dish.

[0017] The housing 1 is provided with a weighing unit 12, which is used to support the liquid collecting dish to monitor its weight. When the weighing unit measures the weight of the liquid collecting dish to reach a preset value, an alarm is immediately issued to prompt the user to clean the extract in the liquid collecting dish or replace a new one. The weighing unit has a buzzer to issue a buzzer alarm.

[0018] The liquid collecting dish 2 includes a liquid collecting shell 21 and a cover body 22. The cover body covers the opening of the liquid collecting shell and seals the liquid collecting shell. The cover body 22 is provided with a first interface and a second interface for connecting the second pipeline 10 and the second end of the three-way solenoid valve 9. When the liquid collecting dish with this structure is used, when the weighing unit sounds an alarm, the user can replace the new liquid collecting dish by unscrewing the cover body.

[0019] A limit retaining wall 13 is arranged around the weighing unit in the casing 1, and the limit retaining wall can limit the movement of the liquid collecting dish to ensure that the liquid collecting dish is always supported and weighed by the weighing unit.

[0020] The side of the housing 1 is provided with an openable door, through which the liquid collecting dish 2 and the humidifier 3 can be accessed, so that the user can open the door to disassemble the liquid collecting dish for replacement and replenish the humidifier with humidifying liquid. Specifically, the humidifier 3 stores sterile water or phlegm-removing liquid.

[0021] The housing 1 is provided with a switch 14, a negative pressure control knob 15 and a pump control knob 16 on the outside. The switch 14 can control the working power of the positive and negative pressure devices, the negative pressure control knob controls the pressure, and the pump control knob controls the input rate of oxygen, that is, controls the delivery amount of humidified oxygen.

[0022] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A positive and negative pressure device for a subglottic suction tube, characterized in that: The invention comprises a casing (1), a liquid collecting dish (2) and a humidifier (3), wherein the liquid collecting dish (2) and the humidifier (3) are arranged inside the casing (1), and an oxygen inlet interface (4), a negative pressure interface (5) and a mixing interface (6) are arranged on the casing (1), wherein the oxygen inlet interface (4) is connected to the humidifier (3) via a first pipeline (7), a pump body (8) is arranged on the first pipeline, the mixing interface (6) is connected to a first end of a three-way electromagnetic valve (9), and the second end and the third end of the three-way electromagnetic valve are respectively connected to the liquid collecting dish and the humidifier, the negative pressure interface (5) is connected to the liquid collecting dish (2) via a second pipeline (10), and a pressure detection gauge (11) connected to the second pipeline is arranged outside the casing (1).

2. A positive and negative pressure device for a subglottic suction tube according to claim 1, characterized in that: A weighing unit (12) is arranged inside the casing (1), and the weighing unit is used to support the liquid collecting dish to monitor its weight.

3. A positive and negative pressure device for a subglottic suction tube according to claim 1 or 2, characterized in that: The liquid collecting dish (2) comprises a liquid collecting shell (21) and a cover body (22), wherein the cover body is arranged to cover the opening of the liquid collecting shell and seal the liquid collecting shell, and the cover body (22) is provided with a first interface and a second interface for connecting the second pipeline (10) and the second end of the three-way solenoid valve (9).

4. A positive and negative pressure device for a subglottic suction tube according to claim 3, characterized in that: A limit stop wall (13) is arranged around the weighing unit in the casing (1), and the limit stop wall can limit the movement of the liquid collecting dish.

5. The positive and negative pressure device for subglottic suction tube according to claim 3, characterized in that: An openable door is provided on the side of the housing (1), and the liquid collecting dish (2) and the humidifier (3) can be accessed by opening the door.

6. A positive and negative pressure device for a subglottic suction tube according to claim 1, characterized in that: Sterile water or expectorant liquid is stored inside the humidifier (3).

7. A positive and negative pressure device for a subglottic suction tube according to claim 1, characterized in that: The housing (1) is provided with a switch (14), a negative pressure control knob (15) and a pump control knob (16) on the outside.

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