CN221045339U

CN221045339U - Protective hood for negative pressure of air curtain

Info

Publication number: CN221045339U
Application number: CN202322780922.6U
Authority: CN
Inventors: 杨宁; 杨任瑞奇; 任章霞; 钱亮; 杨发毅
Original assignee: Guangan Peoples Hospital
Current assignee: Guangan Peoples Hospital
Priority date: 2023-10-17
Filing date: 2023-10-17
Publication date: 2024-05-31
Anticipated expiration: 2033-10-17

Abstract

The utility model discloses a protective hood with negative air curtain pressure, which comprises a hood body, wherein a space for accommodating the head of a patient is arranged in the hood body, an annular opening for the head of the patient to enter and exit is formed in the lower end of the hood body, an air curtain mechanism is connected to the lower end face of the hood body, the front end of the air curtain mechanism surrounds the annular opening and is positioned in the hood body, a negative pressure mechanism is connected to the upper end face of the hood body, the front end of the negative pressure mechanism is communicated with the interior of the hood body, a filtering structure for filtering the exhaled air of the patient is connected to the interior of the negative pressure mechanism, and the problem that the patient infected with respiratory diseases is difficult to transport or move in the prior art is solved.

Description

Protective hood for negative pressure of air curtain

Technical Field

The utility model belongs to the field of protective hoods, and relates to a protective hood with negative air curtain pressure.

Background

Since this century, the global multiple outbreak of respiratory infectious diseases causes great losses to the economic society of various countries, and the current research shows that the main transmission way of the virulent respiratory infectious diseases is the aerosol and the droplets of the exhaled air of patients, and the effective measures are taken to block the transmission of the exhaled air in time, which is the most effective prevention and control measure; at present, devices for personal protection in China and abroad mainly focus on wearing devices of medical staff, such as positive pressure isolation clothing, positive pressure head covers, masks, face screens and the like; the protection measures adopted for the patient are a negative pressure isolation ward, a negative pressure isolation transfer cabin or a negative pressure stretcher, the portable protection device for the patient is more suitable for a single patient, and the portable protection device for the patient is more suitable for the patient capable of freely moving, has higher cost through the negative pressure isolation ward and is not suitable for patient transfer, and can transfer the patient through the negative pressure isolation transfer cabin but at least needs two medical staff to lift the stretcher.

Disclosure of utility model

The utility model aims at: the protective hood for the negative pressure of the air curtain solves the technical problems.

The technical scheme adopted by the utility model is as follows:

The utility model provides a protection hood of air curtain negative pressure, includes the hood body, and the inside space that holds patient's head that is equipped with of hood body and the lower extreme is equipped with the annular opening that supplies patient's head to business turn over, and the lower terminal surface of hood body is connected with air curtain mechanism, and the front end of air curtain mechanism is around annular opening and be located the inside of hood body, and the up end of hood body is connected with negative pressure mechanism, and negative pressure mechanism's front end and hood body's inside intercommunication, negative pressure mechanism internally connected has the filtration that filters patient's exhale gas.

The working principle of the utility model is as follows: the utility model aims at an individual infectious agent, aims at a patient with single infectious respiratory disease, miniaturizes a negative pressure ward and a negative pressure stretcher which are commonly applied to hospitals at present into a protective hood, and simultaneously uses the air curtain principle of air partition blocking of a building to the hood of the utility model to solve the contradiction between head wear and tightness, and lays an invisible door on the neck entrance of the hood body which looks like to be open so as to block the exhaled air in the hood body from escaping to the outside of the hood body.

The air curtain mechanism sends external fresh air into the jet pipe close to the neck of the patient through the air supply pipe so as to jet high-speed air flow to the inside of the head cover body at an angle of 5-10 degrees, an inclined inward air curtain is formed at the neck of the patient, the jetted air blocks the problem that the air exhaled from the inside of the head cover body overflows through the opening at the lower part on one hand, the jetted air provides fresh air for the breathing of the patient on the other hand, the jetted air also prevents water vapor in the inside of the head cover body from condensing, and the visual field of the patient is prevented from being influenced.

The expired gas of the patient is rapidly sucked out of the hood through the negative pressure mechanism at the upper part under the negative pressure mode, and then is conveyed into the filtering structure for disinfection and filtration, so that 0.3 nanometer particles including bacteria and viruses are removed, 99.99% of effective filtration can be achieved, the exhausted gas reaches the national standard of atmospheric emission, and the problem that the expired gas of the patient pollutes surrounding human bodies and the environment is avoided.

Further: the shape of the helmet body is similar to that of a motorcycle full helmet, and the helmet body is made of light plastic.

Further: the front end face of the hood body is provided with an open slot, a sealing plate is inlaid in the open slot, and the sealing plate is made of transparent plastic.

Further: the inner wall of the head cover body is connected with a fixing bracket, and the shape and the size of the lower end of the fixing bracket are matched with those of the head of a patient.

Further: the outer wall of the hood body is connected with a controller, and the air curtain mechanism and the negative pressure mechanism are communicated with the controller through wires.

Further: the air curtain mechanism comprises an injection pipe, an air supply pipe and a blower, wherein the injection pipe is connected with an annular opening at the lower end of the head cover body, a plurality of injection through holes are sequentially and uniformly distributed on the injection pipe and face the inside of the head cover body, one end of the air supply pipe is communicated with the injection pipe, the other end of the air supply pipe is located outside the head cover body, and the blower is located inside the air supply pipe.

Further: the included angle between the axes of the plurality of injection through holes and the horizontal plane is 5-10 degrees.

Further: the negative pressure mechanism comprises an exhaust pipe, the front end of the exhaust pipe is communicated with the hood body, the inner wall of the exhaust pipe is connected with an exhaust fan, the inner wall of the exhaust pipe is also connected with a miniaturized air high-efficiency filter, and the shape and the size of the miniaturized air high-efficiency filter are matched with those of the inner wall of the exhaust pipe.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. A protective hood with negative pressure of air curtain is characterized in that an invisible door is arranged at a neck inlet which is similar to an opening of a hood body so as to prevent the exhaled air in the hood body from escaping to the outside of the hood body, and the problem that the exhaled air of a patient overflows through an opening at the lower part is avoided;

2. In the utility model, the gas exhaled by the patient is rapidly sucked out of the hood through the negative pressure mechanism at the upper part under the negative pressure mode, and then is conveyed into the filtering structure for disinfection and filtration, so that the exhausted gas reaches the national standard of atmospheric emission.

Drawings

For a clearer description of the technical solutions of embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and should not be considered limiting in scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic diagram of the structure of the present utility model;

the marks in the figure: 1-head cover body, 2-sealing plate, 3-fixed support, 4-controller, 5-injection pipe, 6-air supply pipe, 7-forced draught blower, 8-injection through hole, 9-blast pipe, 10-exhaust fan, 11-miniaturized air high-efficiency filter.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present utility model are described in further detail below in connection with examples.

Example 1

The utility model relates to a protective hood with negative pressure of an air curtain, which is shown in figure 1, and comprises a hood body 1, wherein a space for accommodating the head of a patient is arranged in the hood body 1, an annular opening for the head of the patient to enter and exit is arranged at the lower end of the hood body, the lower end surface of the hood body 1 is connected with an air curtain mechanism, the front end of the air curtain mechanism surrounds the annular opening and is positioned in the hood body 1, the upper end surface of the hood body 1 is connected with a negative pressure mechanism, the front end of the negative pressure mechanism is communicated with the interior of the hood body 1, and the interior of the negative pressure mechanism is connected with a filtering structure for filtering the exhaled air of the patient.

The specific implementation manner of the embodiment is as follows: the application aims at an individual infectious agent, aims at a patient with single infectious respiratory disease, miniaturizes a negative pressure ward and a negative pressure stretcher which are commonly applied to hospitals at present into a protective hood, and simultaneously uses the air curtain principle of air partition blocking of a building to the hood of the application to solve the contradiction between head wear and tightness, and lays an invisible door on the neck entrance of the hood body which looks like to be open so as to block the exhaled air in the hood body from escaping to the outside of the hood body.

The technical key of the application is as follows: the air curtain effectively blocks the air flow at the annular opening of the head cover body and maintains the negative pressure state inside the head cover body.

Example two

As shown in figure 1, the shape of a helmet body 1 is similar to that of a motorcycle full helmet, and the helmet body 1 is made of light plastic.

The front end face of the hood body 1 is provided with an open slot, a sealing plate 2 is embedded in the open slot, and the sealing plate 2 is made of transparent plastic.

The inner wall of the head cover body 1 is connected with a fixed bracket 3, and the shape and the size of the lower end of the fixed bracket 3 are matched with those of the head of a patient.

The outer wall of the hood body 1 is connected with a controller 4, and the air curtain mechanism and the negative pressure mechanism are communicated with the controller 4 through wires.

The specific implementation manner of the embodiment is as follows: the shape of the head cover body is similar to that of the motorcycle full helmet, so that the head cover body can cover the head of a patient conveniently, and the weight of the whole head cover body can be lightened conveniently by arranging light plastic, so that the pressure generated by the patient when the motorcycle full helmet is worn can be reduced conveniently.

The sealing plate is convenient for connect through the sealing plate that the terminal surface set up before the hood body, the sealing plate that is convenient for seal the opening groove through the setting for the inside state that is in of hood body, the material through the sealing plate is transparent plastic simultaneously, makes the patient be convenient for see outside condition when wearing the hood body, and then is convenient for patient remove and walk.

The inner side of the top of the head cover body is provided with an attaching fixing bracket for relatively fixing the head of a person and preventing the head of the person from moving left and right up and down.

The controller is internally provided with an integrated circuit, and a set program is input into the controller to control the air curtain mechanism and the negative pressure mechanism to work and receive information transmitted by the pressure sensor.

Example III

The utility model relates to a protective hood with negative pressure of an air curtain, as shown in fig. 1, wherein the air curtain mechanism comprises an injection pipe 5, an air supply pipe 6 and a blower 7, the injection pipe 5 is connected with an annular opening at the lower end of a hood body 1, a plurality of injection through holes 8 are sequentially and uniformly distributed on the injection pipe 5, the injection through holes 8 face the inside of the hood body 1, one end of the air supply pipe 6 is communicated with the injection pipe 5, the other end of the air supply pipe 6 is positioned outside the hood body 1, and the blower 7 is positioned inside the air supply pipe 6.

The included angle between the axes of the spray through holes 8 and the horizontal plane is 5-10 degrees.

The negative pressure mechanism includes blast pipe 9, and blast pipe 9's front end and hood body 1 intercommunication, and blast pipe 9's inner wall is connected with exhaust fan 10, and blast pipe 9 inner wall still is connected with miniaturized air high efficiency filter 11, and miniaturized air high efficiency filter 11's shape, size and blast pipe 9 inner wall's shape, size phase-match.

The specific implementation manner of the embodiment is as follows: after the head cover body is worn by a patient, the head and neck of the patient is located inside the head cover body, the inner side of the lower end face of the head cover body is connected with the injection pipe, the blower is used for generating wind power to convey outside air into the injection pipe after compressing, the injection pipe is arranged on one side close to the neck skin, the injection through holes are densely distributed in a line, and high-pressure air jet is sprayed from the injection through holes to form an air curtain of the neck, so that exhaled air is prevented from escaping outside the head cover body.

Through setting up the angle between jet through hole and the horizontal plane for the gas that spurts forms the air curtain has certain ascending angle simultaneously, and ascending angle is convenient for patient breathes fresh air.

The exhaust fan that the blast pipe inside set up is convenient for carry miniaturized air high-efficient filter with the inside gas transmission of hood body, and then carries the inside gas transmission of hood body to the outside of hood body for the inside state that is in negative pressure of hood body, preferably, the power of exhaust fan is greater than the power of forced draught blower.

The gas conveyed by the head cover body is conveniently disinfected and filtered through the miniaturized air high-efficiency filter, so that particles of 0.3 nanometer are removed, bacteria and viruses are included, 99.99% of the gas can be effectively filtered, and the filtered gas is discharged through the other end of the exhaust pipe.

Preferably, the shape and the size of the miniaturized air high-efficiency filter are matched with those of the inner wall of the exhaust pipe, so that the exhaust gas in the head cover body can be filtered fully.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any modifications, equivalents, improvements and modifications within the spirit and principles of the utility model will become apparent to those skilled in the art.

Claims

1. The utility model provides a protection hood of air curtain negative pressure which characterized in that: including hood body (1), the inside space that holds patient's head that is equipped with of hood body (1) and the lower extreme is equipped with the annular opening that supplies patient's head to business turn over, and the lower terminal surface of hood body (1) is connected with air curtain mechanism, and the front end of air curtain mechanism is around annular opening and be located the inside of hood body (1), and the up end of hood body (1) is connected with negative pressure mechanism, and negative pressure mechanism's front end and hood body (1)'s inside intercommunication, negative pressure mechanism internally connected has the filtration structure who filters patient's exhale gas.

2. An air curtain negative pressure protective hood according to claim 1, wherein: the shape of the head cover body (1) is similar to that of a motorcycle full helmet, and the head cover body (1) is made of light plastic.

3. An air curtain negative pressure protective hood according to claim 1, wherein: the front end face of the hood body (1) is provided with an open slot, a sealing plate (2) is embedded in the open slot, and the sealing plate (2) is made of transparent plastic.

4. An air curtain negative pressure protective hood according to claim 1, wherein: the inner wall of the head cover body (1) is connected with a fixed bracket (3), and the shape and the size of the lower end of the fixed bracket (3) are matched with those of the head of a patient.

5. An air curtain negative pressure protective hood according to claim 1, wherein: the outer wall of the hood body (1) is connected with a controller (4), and the air curtain mechanism and the negative pressure mechanism are communicated with the controller (4) through wires.

6. An air curtain negative pressure protective hood according to claim 1, wherein: the air curtain mechanism comprises an injection pipe (5), an air supply pipe (6) and a blower (7), wherein the injection pipe (5) is connected with an annular opening at the lower end of the head cover body (1), a plurality of injection through holes (8) are sequentially and uniformly distributed in the injection pipe (5), the injection through holes (8) are all towards the inside of the head cover body (1), one end of the air supply pipe (6) is communicated with the injection pipe (5), the other end of the air supply pipe (6) is located the outside of the head cover body (1), and the blower (7) is located the inside of the air supply pipe (6).

7. The protective hood for an air curtain negative pressure of claim 6, wherein: the included angle between the axes of the spray through holes (8) and the horizontal plane is 5-10 degrees.

8. An air curtain negative pressure protective hood according to claim 1, wherein: the negative pressure mechanism comprises an exhaust pipe (9), the front end of the exhaust pipe (9) is communicated with the hood body (1), the inner wall of the exhaust pipe (9) is connected with an exhaust fan (10), the inner wall of the exhaust pipe (9) is also connected with a miniaturized air high-efficiency filter (11), and the shape and the size of the miniaturized air high-efficiency filter (11) are matched with those of the inner wall of the exhaust pipe (9).