CN111166592A - Protective cover constant negative pressure monitoring device - Google Patents
Protective cover constant negative pressure monitoring device Download PDFInfo
- Publication number
- CN111166592A CN111166592A CN202010195308.1A CN202010195308A CN111166592A CN 111166592 A CN111166592 A CN 111166592A CN 202010195308 A CN202010195308 A CN 202010195308A CN 111166592 A CN111166592 A CN 111166592A
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- CN
- China
- Prior art keywords
- negative pressure
- protective cover
- monitoring device
- pressure controller
- gas filter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G10/00—Treatment rooms or enclosures for medical purposes
- A61G10/005—Isolators, i.e. enclosures generally comprising flexible walls for maintaining a germ-free environment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G10/00—Treatment rooms or enclosures for medical purposes
- A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention 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 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 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 invention relates to the technical field of medical instruments, in particular to a constant negative pressure monitoring device for a protective cover.
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.).
Disclosure of Invention
The invention aims to provide a protective cover constant negative pressure monitoring device, which can maintain a constant negative pressure state in a protective cover, extract gas and aerosol exhaled by a patient and spray and aerosol diffused by the lung or the stomach in an interventional therapy process, reduce the infection risk of medical personnel, and has a simple structure and easy realization.
The technical scheme adopted by the invention for solving the technical problems is as follows:
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 invention has the advantages that after the patient wears the isolation protective cover, the negative pressure controller is started, the negative pressure pump is controlled by the negative pressure controller to pump air in the protective cover, so that the air and aerosol exhaled by the patient and the droplets and aerosol diffused by the lung or the stomach in the interventional therapy process are pumped out, and the pumped gas carrying viruses is filtered and disinfected by the gas filter and then is 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 is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a composite filtration layer of a gas filter of the present invention.
Detailed Description
As shown in fig. 1, the invention 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 foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection 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. Protective cover constant negative pressure monitoring device according to claim 1, 2 or 3, characterized in that the negative pressure controller is provided with a negative pressure value setting key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195308.1A CN111166592A (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 |
|---|---|---|---|
| CN202010195308.1A CN111166592A (en) | 2020-03-19 | 2020-03-19 | Protective cover constant negative pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111166592A true CN111166592A (en) | 2020-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010195308.1A Pending CN111166592A (en) | 2020-03-19 | 2020-03-19 | Protective cover constant negative pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111166592A (en) |
-
2020
- 2020-03-19 CN CN202010195308.1A patent/CN111166592A/en active Pending
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