CN2647350Y - Passive negative pressure protective face mask - Google Patents
Passive negative pressure protective face mask Download PDFInfo
- Publication number
- CN2647350Y CN2647350Y CN 03209260 CN03209260U CN2647350Y CN 2647350 Y CN2647350 Y CN 2647350Y CN 03209260 CN03209260 CN 03209260 CN 03209260 U CN03209260 U CN 03209260U CN 2647350 Y CN2647350 Y CN 2647350Y
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- gauze
- face
- mask
- patient
- Prior art date
- 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.)
- Expired - Fee Related
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A passive negative pressure protection mask relates to a medical protection tool, which mainly solves the problems related to incapability of discharging toxic air exhaled by patients out of room by means of an ordinary mask, characterized in that the side of the mask opposite the human face is made from a plurality layers of gauze and is provided with a film made from a layer of medical PVC materials; on the one end, the oxygen tube is inserted into the gauze to face the patient; the negative pressure absorption tube is inserted into a membrane air bag. The product can be widely used by patients in different medical departments.
Description
Technical field
The utility model relates to a kind of medical protection utensil, especially a kind of passive type negative pressure protective face mask.
Background technology
Current, people wear the face shield that is used for doing protective action, comprise the mouth mask of using in the hospital, be the front input and output gas, if in the closed room of a fixed space, when gas does not flow or flows when smooth, carbon dioxide that people breathe out or the gas that carries the germs of a disease can rest in the room and can't discharge, like this, toxic gas that the patient breathes out or the toxic gas that other people breathe out can increase the viral level in the indoor gas, destroy dynamic equilibrium, increase medical personnel or spy patient's infection probability easily, the possibility that increases the weight of the patient is perhaps arranged.
Summary of the invention
The purpose of this utility model is to provide a kind of passive type negative pressure protective face mask, owing to have oxygen supply pipe and vacuum suction pipe at its side, has realized the side ventilation, has overcome the deficiency that existing mouth mask exists, and has good protection effect.
The utility model is achieved in that the face shield of making at several layers of gauze 1; deviate from the human face film 2 (seeing accompanying drawing 1) that one deck is made by medical PVC simultaneously is set; so that shape film forming air bag 6 (seeing accompanying drawing 2) when patient exhales; oxygen supply pipe 4 inserts in the gauze from face shield one end; towards face; vacuum suction pipe 5 deviates from face from face shield one end and places in the film air bag; be separated with several layers of gauze between two pipes, can guarantee the oxygen uptake that the patient is sufficient thus and get rid of the gas of breathing out by vacuum suction more fully.
The utility model has the advantages that:
(1) medical worker's (or family members visit before) about 10 minutes before the patient is treated, tell that earlier the patient has worn face shield, the gas of its exhalation is discharged into outdoor by the negative pressure absorption, no longer be discharged in the room air, and indoor air can reach comparatively safe concentration (several minutes foul smell concentration can reduce about half under the ventilation condition of general ward, and indoor virus concentration only is a less than 1/10th after tens minutes thus) in tens minutes under ventilation condition.The medical worker can enter the room treatment comparatively safely like this.
If the ventilation of indoor toxic gas " half-life " is 3 minutes, then after 15 minutes in theory its poison gas concentration only be (1/2)
5=1/32
(2) this technology also can be applicable to the patient that ambulance is picked respiratory infectious disease.
(3) this technology adopts patient's shielded passive inverse type protection of environment personnel of masking.
Description of drawings
Fig. 1 is the structural representation of passive type negative pressure protective face mask
Fig. 2 is the A-A cutaway view
The specific embodiment
Fig. 1 is a passive type negative pressure protective face mask structural representation, and wherein 1 is the face shield of being made by the multilayer gauze.Deviate from the human face at it film 2 that one deck is made by the medical PVC material simultaneously is set, when the user exhales, can form and hold the air film air bag.Be fixed as one with the gauze face shield all around.Insert oxygen hose 4 and vacuum suction pipe 5 from face shield one end, oxygen hose 4 inserts in the gauzes, and vacuum suction pipe 5 inserts in the film air bags 6, is separated with several layers of gauze between two pipes, can guarantee the more sufficient oxygen uptake of patient thus and can get rid of the gas of exhalation more fully.During use, oxygen hose is connected with apparatus of oxygen supply and for the patient provides oxygen, and the vacuum suction pipe is connected with the negative pressure suction means and it is outdoor that the gas that has virus that the patient breathes out is discharged into, and 3 are band among the figure, Fig. 2 is its A-A cutaway view, wherein 6 air bags that form when exhaling for the patient.
Claims (1)
1, a kind of passive type negative pressure protective face mask, a face shield of being made by the multilayer gauze (1) and 4 bands (3) are arranged, it is characterized in that face shield deviates from facial one side and is provided with a film (2) of being made by the medical PVC material, be fixed as one with gauze face shield (1) around it, oxygen supply pipe (4) inserts in the gauze from the one end, towards patient's face, vacuum suction pipe (5) inserts in the film air bag from this end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03209260 CN2647350Y (en) | 2003-09-10 | 2003-09-10 | Passive negative pressure protective face mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03209260 CN2647350Y (en) | 2003-09-10 | 2003-09-10 | Passive negative pressure protective face mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2647350Y true CN2647350Y (en) | 2004-10-13 |
Family
ID=34325070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03209260 Expired - Fee Related CN2647350Y (en) | 2003-09-10 | 2003-09-10 | Passive negative pressure protective face mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2647350Y (en) |
-
2003
- 2003-09-10 CN CN 03209260 patent/CN2647350Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |