CN111195169A

CN111195169A - Medical protective eye cover with demisting structure

Info

Publication number: CN111195169A
Application number: CN202010149573.6A
Authority: CN
Inventors: 齐欣; 崔宇龙; 曹丽君
Original assignee: Second Xiangya Hospital of Central South University
Current assignee: Second Xiangya Hospital of Central South University
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-05-26

Abstract

The invention discloses a medical protective eyeshade with a demisting structure, which comprises an eyeshade frame, an outer lens and an inner lens, wherein a closed front airflow cavity is formed between the outer lens and the inner lens, a plurality of air holes are formed in the inner lens in the circumferential direction, an inflation channel and a micro gas cylinder are arranged on the eyeshade frame, the inflation channel is communicated with the front airflow cavity, an airflow port of the micro gas cylinder is communicated with the inflation channel through a connecting pipeline, dry gas is filled in the micro gas cylinder, and an inflation valve is arranged at the airflow port of the micro gas cylinder. Adopt the medical eye-shade of this application, when the inboard of outer lens was hazed, only need open the charging valve door, fill into dry gas through miniature gas cylinder in the past airflow cavity and can get rid of the water smoke, the external gaseous defogging such as medical oxygen that uses of doing, whole process is simple and convenient, has avoided influencing the sight and the drawback of wearing the effect because of the lens is hazed.

Description

Medical protective eye cover with demisting structure

Technical Field

The invention relates to the field of medical instruments, in particular to a medical protective eyeshade with a defogging structure.

Background

As is well known, with the rapid development of modern industry, there are increasing various particles, smoke, radioactive aerosol, toxic aerosol, influenza virus, pneumonia virus, etc. suspended in the air, which have seriously affected the physical and mental health of people, and in order to cope with the infection of various viruses, toxic aerosol, etc. and to ensure the health of people, workers, and medical staff, the protective eyeshade has become an indispensable protective equipment.

In order to improve the protection effect and the strength of the lens parts, the protective eyeshade generally comprises two layers of lenses, a front airflow cavity is formed between the inner layer of lenses and the outer layer of lenses, and a plurality of air holes are formed in the inner layer of lenses in the circumferential direction. The user is when wearing the eyeshade, because lens position and facial formation sealed space, when often using for a long time, the vapor of breathing production can pass the bleeder vent and get into preceding air current chamber, because the influence of receptor temperature, when external environment low temperature especially, inlayer lens temperature is high, outer lens temperature is low, can lead to steam to condense in the inboard of outer lens and form water smoke, not only influence the sight, influence the comfort level of wearing moreover, and prior art's eyeshade does not all possess the waterproof fog function.

Disclosure of Invention

In view of the above, the present invention is directed to a medical goggles with a defogging structure, which has the advantage of a fog-proof function, so as to solve the problems in the prior art.

The invention solves the problems through the following technical means:

the utility model provides a medical eye-shade of area defogging structure, includes eye-shade frame, outer lens and inlayer lens, form confined preceding air current chamber between outer lens and the inlayer lens, a plurality of bleeder vents have been seted up to circumference on the inlayer lens, be provided with inflation channel and miniature gas cylinder on the eye-shade frame, inflation channel and preceding air current chamber intercommunication, the air current mouth of miniature gas cylinder or medical oxygen air supply passes through connecting tube and inflation channel intercommunication, and the air current mouth department of miniature gas cylinder or medical oxygen air supply is provided with the charging flap valve.

Furthermore, the inflation channel comprises a main channel and a plurality of branch channels, wherein the main channel is arranged at the top of the eyeshade frame, one end of each branch channel is communicated with the main channel, and the other end of each branch channel is communicated with the front airflow cavity.

Further, the outlet of the branch channel faces the outer lens.

Further, the bottom of the eyeshade frame is provided with an air outlet with an exhaust valve, and the air outlet is communicated with the front airflow cavity.

Furthermore, the lateral wall of main entrance is provided with a plurality of air inlets along main entrance length direction interval, the air inlet includes screw hole and bell mouth that communicates each other, connecting tube and screw hole threaded connection, connecting tube's tip is provided with the ejector pin through branch, be provided with in the bell mouth with the ball case that the path end matching of bell mouth stopped up, the big footpath end of bell mouth is provided with the extension board, be provided with compression spring between ball case and the extension board.

The invention has the beneficial effects that:

the medical protective eyeshade with the defogging structure comprises an eyeshade frame, an outer lens and an inner lens, wherein a closed front airflow cavity is formed between the outer lens and the inner lens, a plurality of air holes are formed in the inner lens in the circumferential direction, an inflation channel and a micro gas cylinder are arranged on the eyeshade frame, the inflation channel is communicated with the front airflow cavity, an airflow port of the micro gas cylinder or a medical oxygen source is communicated with the inflation channel through a connecting pipeline, dry gas is filled in the micro gas cylinder, the medical oxygen is dry gas, and an inflation valve is arranged at the airflow port of the micro gas cylinder or the medical oxygen source. Adopt the medical eye-shade of this application, when the inboard of outer lens was hazed, only need open the charging valve door, fill into dry gas through miniature gas cylinder in the past air current intracavity and can get rid of the water smoke, also can connect medical oxygen air supply and carry out the defogging, whole process is simple and convenient, has avoided influencing the sight and wearing the drawback of effect because of the lens hazes can't the defogging again.

Drawings

The invention is further described below with reference to the figures and examples.

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a front view of an inner lens of example 1 of the present invention;

FIG. 3 is a sectional view of example 1 of the present invention;

FIG. 4 is a schematic view of the overall structure of embodiment 2 of the present invention;

FIG. 5 is a sectional view of example 2 of the present invention;

fig. 6 is a partially enlarged schematic view of fig. 5.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-3, a medical eye shield with a defogging structure comprises an eye shield frame 1, an outer lens 2 and an inner lens 3, wherein a closed airflow cavity 4 is formed between the outer lens 2 and the inner lens 3, the outer lens plays a role in protection and condensation of fog, and the inner lens plays a role in: 1. form the preceding air current chamber of relative confined, 2, guarantee that the temperature in the preceding air current chamber is lower, is less than the rear side chamber temperature that inlayer lens and human face formed when using and obviously is higher than preceding air current chamber, and steam only can condense at the outer lens inside wall in preceding air current intracavity, and 3, inlayer lens can protect dry gas not directly to strike the eye. A plurality of air holes 5 are formed in the inner layer lens in the circumferential direction, water vapor flows into the front airflow cavity from the cavity in front of eyes through the air holes, and the water vapor can be condensed on the outer layer lens due to the fact that the environment where the outer layer lens is located is lower in temperature than the inner layer lens. The eyeshade frame 1 is provided with glasses legs or binding bands for fixing, the eyeshade frame 1 is provided with an inflation channel and a micro gas cylinder 7, the inflation channel is communicated with the front airflow cavity 4, an airflow port of the micro gas cylinder 7 is communicated with an airflow inlet of the inflation channel through a connecting pipeline 12, an inflation valve 8 is arranged at the airflow port of the micro gas cylinder 7, and the micro gas cylinder 7 is filled with dry gas.

Adopt the medical eye-shade of this application, when the inboard of outer lens hazes, only need open charging valve 8, fill into dry gas (like medical oxygen) in the air current chamber 4 through miniature gas cylinder 7 before and can get rid of the water smoke, whole process is simple and convenient, has avoided influencing the drawback of sight and wearing the effect because of the lens hazes.

Preferably, when the air inlet of the inflation channel is not connected with the miniature air bottle, a protective rubber cover is covered to keep the sterile state, and the rubber cover and the periphery are disinfected by using a disinfectant when in use.

Preferably, the medical oxygen source can be used for filling dry gas into the forward gas flow cavity, and the defogging effect can be achieved.

The specific principle of demisting the dry gas is as follows:

the micro gas cylinder is filled with dry gas and does not contain moisture, and the partial pressure of water vapor of the gas released by the micro gas cylinder is close to 0 mmHg; the medical oxygen uses oxygen which is not humidified, and the water vapor partial pressure is close to 0 mmHg. When the drying gas with extremely low water vapor partial pressure passes through the front airflow cavity, because the difference between the water vapor partial pressure of the drying gas and the vapor pressure of dew on the outer layer lens is large, fog and dew drops on the outer layer lens can be evaporated in a short time, and a good defogging effect is generated. And after demisting, the partial pressure of water vapor rises, the water content is high, and the water vapor is discharged from a bottom exhaust valve, so that the water vapor is prevented from being condensed on the outer layer lens again. It is ensured that the outer lens does not fog for as long a time as possible.

Preferably, in order to improve the effect of demisting during inflation, the miniature gas cylinder can be heated during inflation, and particularly, an electric heating sheet is arranged outside the miniature gas cylinder, and the energy source of the electric heating sheet can be a portable power supply.

As a further improvement to the above technical solution, the inflation channel includes a main channel 601 provided at the top of the eyeshade frame 1 and a plurality of branch channels 602, the main channel 601 extends along the length direction of the eyeshade frame 1, the plurality of branch channels 602 are arranged at intervals along the length direction of the main channel 601, one end of the branch channels 602 is communicated with the main channel 601, and the other end is communicated with the front airflow chamber 4. A branch channel communicated with the micro gas cylinder 7 horizontally extends from the middle part of the main channel 601. Adopt this kind of structural style, can make the defogging air current unanimous relatively blow to the lens of both sides, ensure that both sides lens can both be timely, reliable defogging. Preferably, the outlet of the branch channel faces the outer lens, and the branch channel can be arranged at an angle of 45 degrees, so that the demisting airflow directly blows to the outer lens, which is beneficial to improving the demisting efficiency.

As a further improvement to the above technical solution, the bottom of the eyeshade frame 1 is provided with an air outlet 10 with an exhaust valve 9, and the air outlet is communicated with the front airflow cavity. In the defogging process, the exhaust valve of the air outlet is opened, and the water mist can be discharged in time.

Example 2

The present embodiment is different from embodiment 1 in that: as shown in fig. 4-6, a plurality of air inlets 11 are arranged at intervals on the top of the main channel 601 along the length direction of the main channel 601, the air inlets include a threaded hole 1102 and a tapered hole 1101 which are communicated with each other, the connecting pipe 12 is in threaded connection with the threaded hole 1102, and the end of the connecting pipe 12 is provided with a push rod 13 through a support rod 14. The ball-shaped valve core 15 is arranged in the tapered hole 1101 and is matched with and blocked by the small-diameter end of the tapered hole, a support plate 17 is arranged at the large-diameter end of the tapered hole 1101, a vent hole for an air flow passage is formed in the support plate 17, a compression spring 16 is arranged between the ball-shaped valve core 15 and the support plate 17, one end of the compression spring 16 is connected with the ball-shaped valve core 15, and the other end of the compression spring is connected with the support plate 17. Adopt this kind of structural style, can be according to the lens of different sides or the different fogging position of lens with one side, select suitable air inlet and be connected with miniature gas cylinder, for example, if the right side lens fogging, then select to be close to the air inlet on right side and be connected with miniature gas cylinder, the defogging air current can be relatively rapid blow to the fogging position like this to be favorable to improving defogging efficiency. In the process that the micro gas cylinder is connected with the gas inlet through the connecting pipeline, the ejector rod can move downwards along with the gradual screwing between the connecting pipeline and the threaded hole, the spherical valve core is pushed to move downwards through the ejector rod, so that the conical hole can be opened, the flow of demisting airflow is avoided being blocked, and for the gas inlet which is not in butt joint with the micro gas cylinder, the spherical valve core blocks the small-diameter end of the conical hole under the elastic action of the compression spring, the gas inlet can be kept in a closed state, and gas leakage or the infiltration of external viruses and the like are avoided.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a medical eye-shade of area defogging structure, includes eye-shade frame, outer lens and inlayer lens, form confined preceding air current chamber between outer lens and the inlayer lens, a plurality of bleeder vents, its characterized in that have been seted up to circumference on the inlayer lens: the eye mask frame is provided with an inflation channel and a micro gas cylinder, the inflation channel is communicated with the front airflow cavity, an airflow port of the micro gas cylinder or the medical oxygen gas source is communicated with the inflation channel through a connecting pipeline, and an inflation valve is arranged at the airflow port of the micro gas cylinder or the medical oxygen gas source.

2. The medical eye shield with the defogging structure according to claim 1, wherein: the inflatable channel comprises a main channel and a plurality of branch channels, wherein the main channel is arranged at the top of the eyeshade frame, one end of each branch channel is communicated with the main channel, and the other end of each branch channel is communicated with the front airflow cavity.

3. The medical eye shield with the defogging structure according to claim 2, wherein: the outlet of the branch channel faces the outer lens.

4. The medical eye shield with the defogging structure according to claim 3, wherein: an air outlet with an exhaust valve is arranged at the bottom of the eyeshade frame and is communicated with the front airflow cavity.

5. The medical eye shield with the defogging structure according to any one of claims 1 to 4, wherein: the side wall of the main channel is provided with a plurality of air inlets at intervals along the length direction of the main channel, each air inlet comprises a threaded hole and a conical hole which are communicated with each other, the connecting pipeline is in threaded connection with the threaded holes, the end part of the connecting pipeline is provided with an ejector rod through a supporting rod, a spherical valve core which is matched and blocked with the small-diameter end of each conical hole is arranged in each conical hole, a supporting plate is arranged at the large-diameter end of each conical hole, and a compression spring is arranged between each spherical valve core and each supporting.