CN211986078U - Protective cover constant negative pressure monitoring device - Google Patents
Protective cover constant negative pressure monitoring device Download PDFInfo
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- CN211986078U CN211986078U CN202020351104.8U CN202020351104U CN211986078U CN 211986078 U CN211986078 U CN 211986078U CN 202020351104 U CN202020351104 U CN 202020351104U CN 211986078 U CN211986078 U CN 211986078U
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- negative pressure
- protective cover
- monitoring device
- pressure controller
- gas filter
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Abstract
The utility model discloses a protective cover constant negative pressure monitoring device, which comprises a negative pressure pump, a negative pressure controller and a gas filter, wherein an air exhaust nozzle of the negative pressure pump is communicated with the protective cover through an air exhaust pipe, and an air exhaust nozzle is connected with the gas filter through an exhaust pipe; the air exhaust pipe is provided with a negative pressure sensor, the negative pressure sensor is connected with an input interface of a negative pressure controller, and an output interface of the negative pressure controller is connected with a negative pressure pump; after the patient wears the isolation protective cover, the negative pressure controller controls the negative pressure pump to pump air into the protective cover, so that the gas and aerosol exhaled by the patient and the droplets and aerosol emitted from the lung or the stomach in the interventional therapy process are pumped out, and the pumped gas carrying viruses is discharged after being filtered and sterilized by the gas filter, so that the infection risk of medical personnel is reduced; the negative pressure controller realizes closed-loop control on the negative pressure in the protective cover according to the feedback of the negative pressure sensor, thereby ensuring constant negative pressure and ensuring the safety in use.
Description
Technical Field
The utility model relates to the technical field of medical equipment, specifically a constant negative pressure monitoring device of protection casing.
Background
When a medical worker performs an invasive operation for diagnosing and treating lung and stomach diseases or performs operations such as sputum suction and off-line tests of a breathing machine on a patient through endoscopy (such as bronchoscopy and gastroscope), the medical worker needs to contact the patient at a short distance, and the medical worker can take a protective measure in order to prevent iatrogenic infections (such as bacteria and viruses).
For various infectious diseases taking air as a medium, such as SARS, 2019-nCoV and other viruses, the health of medical staff in hospitals is seriously threatened, and the infection probability of the medical staff in hospitals and epidemic prevention departments is the highest during the outbreak of infectious diseases and epidemic situations. When a patient is treated, medical staff needs to be in close contact with an infectious patient, and droplets, blood, body fluid or secretions of the patient and aerosol sprayed by the patient easily cause exposure infection risks of the medical staff, such as tracheotomy, chest surgery of a tuberculosis patient, tube replacement of a respiratory tube orifice, sputum suction and the like. Even with personal safety protection equipment such as hats, masks, goggles, etc., it is difficult to prevent aerosol from spreading in the local air flow for a short period of time. During the diagnosis and treatment of SARS in 2003 and new coronary pneumonia in 2020, many health care workers are infected by direct exposure to splashed liquids and aerosols.
At present, an isolation protective cover is applied to medical treatment, but is basically a positive pressure medical protective hood, can be used for respiratory aerosol protection of close contacts and medical care personnel of patients with severe respiratory infectious diseases, and is also used for respiratory protection in a high-grade biosafety laboratory; but it is expensive and complicated in manufacturing process.
Whereas for non-sealed insulating protective hoods, there is still a risk of infection by spray and aerosol, since the protective hood inevitably presents gaps (such as for example cuffs, gaps during treatment due to handling, etc.).
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a permanent negative pressure monitoring device of protection casing, the device can make and maintain invariable negative pressure state in the protection casing, take out the gas and the aerosol of patient's exhalation and intervene the droplet and the aerosol that lung or stomach distribute among the treatment process, reduce medical personnel's infection risk, and simple structure easily realizes.
The utility model provides a technical scheme that its technical problem adopted is:
the protective cover constant negative pressure monitoring device comprises a negative pressure pump, a negative pressure controller and a gas filter, wherein an air suction nozzle of the negative pressure pump is communicated with the protective cover through an air suction pipe, and an air exhaust nozzle is connected with the gas filter through an air exhaust pipe; the exhaust pipe is provided with a negative pressure sensor, the negative pressure sensor is connected with an input interface of a negative pressure controller, an output interface of the negative pressure controller is connected with a negative pressure pump, and the negative pressure controller controls the negative pressure pump according to feedback of the negative pressure sensor to realize closed-loop control on negative pressure in the protective cover.
Further, filter cotton or a filter membrane with membrane holes smaller than 0.5 mu m is adopted in the gas filter.
Furthermore, the gas filter adopts a composite filter layer, and the composite filter layer is formed by sequentially laminating a polypropylene cloth layer, a glass fiber filter core layer and an activated carbon layer.
Further, the power supply of the negative pressure controller comprises an alternating current power supply interface and a direct current power supply.
Further, the direct current power supply adopts a rechargeable battery.
Further, the negative pressure controller is provided with a negative pressure value setting key.
The utility model has the advantages that after the patient wears the isolation protective cover, the negative pressure controller is opened, the negative pressure pump is controlled by the negative pressure controller to pump air into the protective cover, so that the air exhaled by the patient, aerosol and spray and aerosol diffused by the lung or the stomach in the interventional therapy process are pumped out, and the pumped gas carrying virus is filtered and disinfected by the gas filter and then discharged, thereby reducing the infection risk of medical personnel; the negative pressure controller realizes closed-loop control on the negative pressure in the protective cover according to the feedback of the negative pressure sensor, thereby ensuring constant negative pressure and ensuring the safety in use.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the composite filter layer of the gas filter of the present invention.
Detailed Description
As shown in fig. 1, the utility model provides a protective cover constant negative pressure monitoring device, which comprises a negative pressure pump 1, a negative pressure controller 2 and a gas filter 3, wherein a suction nozzle 1a of the negative pressure pump 1 is communicated with a protective cover 5 through a suction pipe 4, and an exhaust nozzle 1b is connected with the gas filter 3 through an exhaust pipe 6; the exhaust tube 4 is provided with a negative pressure sensor 7, the negative pressure sensor 7 is connected with an input interface of the negative pressure controller 2, and an output interface of the negative pressure controller 2 is connected with the negative pressure pump 1. A filter cotton 8 or a filter membrane with membrane holes smaller than 0.5 mu m is adopted in the gas filter 3. As shown in fig. 2, a composite filter layer 9 may be further used in the gas filter, and the composite filter layer 9 is formed by sequentially laminating a polypropylene cloth layer 9a, a glass fiber filter layer 9b and an activated carbon layer 9 c.
The power supply of the negative pressure controller 2 comprises an alternating current power supply interface 2a and a direct current power supply 2b, the direct current power supply 2b adopts a rechargeable battery, and when the negative pressure controller is used, the rechargeable battery can be externally connected with alternating current for supplying power and simultaneously be charged, and the direct current power supply 2b can also be directly used. The negative pressure controller 2 is provided with a negative pressure value setting key 2c, a "switch" key 2d, and a display screen 2 e.
After a patient wears the isolation protective cover 5, the negative pressure controller 2 is opened by pressing a switch key 2d, a negative pressure value is set through a negative pressure value setting key 2c, the negative pressure controller 2 controls the negative pressure pump 1 to pump air into the protective cover 5, so that gas and aerosol exhaled by the patient and spray and aerosol emitted from the lung or the stomach in the interventional therapy process are pumped out, and the pumped gas carrying viruses is discharged after being filtered and sterilized through the gas filter 3, so that the infection risk of medical personnel is reduced; in the process, the negative pressure controller 2 realizes closed-loop control on the negative pressure in the protective cover 5 according to the feedback of the negative pressure sensor 7, thereby ensuring constant negative pressure and ensuring the safety in use. The display screen 2e displays the negative pressure value.
Preferably, the gas filter 3 is also connected to an input interface of the negative pressure controller 2, the negative pressure controller 2 simultaneously monitors and displays the rechargeable battery capacity and the blockage degree of the gas filter 3, and when the rechargeable battery capacity is too low or the blockage of the gas filter 3 seriously affects the use, an alarm prompt is given.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the invention is not limited to the embodiments described herein, but is capable of other embodiments according to the invention, and may be used in various other applications, including, but not limited to, industrial. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (6)
1. The protective cover constant negative pressure monitoring device is characterized by comprising a negative pressure pump, a negative pressure controller and a gas filter, wherein an air suction nozzle of the negative pressure pump is communicated with the protective cover through an air suction pipe, and an exhaust nozzle is connected with the gas filter through an exhaust pipe; the exhaust pipe is provided with a negative pressure sensor, the negative pressure sensor is connected with an input interface of a negative pressure controller, an output interface of the negative pressure controller is connected with a negative pressure pump, and the negative pressure controller controls the negative pressure pump according to feedback of the negative pressure sensor to realize closed-loop control on negative pressure in the protective cover.
2. The protective cover constant negative pressure monitoring device according to claim 1, wherein a filter cotton or a filter membrane with membrane pores smaller than 0.5 μm is adopted in the gas filter.
3. The protective cover constant negative pressure monitoring device according to claim 1, wherein a composite filter layer is adopted in the gas filter, and the composite filter layer is formed by sequentially laminating a polypropylene cloth layer, a glass fiber filter layer and an activated carbon layer.
4. The protective cover constant negative pressure monitoring device according to claim 1, 2 or 3, wherein the power supply of the negative pressure controller comprises an AC power interface and a DC power supply.
5. The protective cover constant negative pressure monitoring device according to claim 4, wherein the DC power supply is a rechargeable battery.
6. The protective cover constant negative pressure monitoring device according to claim 1, wherein the negative pressure controller is provided with a negative pressure value setting key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020351104.8U CN211986078U (en) | 2020-03-19 | 2020-03-19 | Protective cover constant negative pressure monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020351104.8U CN211986078U (en) | 2020-03-19 | 2020-03-19 | Protective cover constant negative pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211986078U true CN211986078U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020351104.8U Active CN211986078U (en) | 2020-03-19 | 2020-03-19 | Protective cover constant negative pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211986078U (en) |
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2020
- 2020-03-19 CN CN202020351104.8U patent/CN211986078U/en active Active
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