CN213129998U - Isolation operation type hood compatible with positive and negative pressure - Google Patents

Abstract

The utility model discloses an isolation operation type hood compatible with positive and negative pressure, which comprises a hood body, wherein the hood body is provided with a positive pressure and/or negative pressure device connecting channel, and the hood body can be matched and closely attached to the shoulder or the upper body of a human body; the hood body is provided with at least one operation hole, and the operation hole is connected with an isolation operation glove and/or a sealing device. Through the utility model discloses can satisfy medical personnel and carry out the demand of keeping apart the operation to patient's head and face, alleviate medical personnel's guard against pressure, also can be used to medical personnel's isolation protection itself simultaneously, make things convenient for medical personnel to keep apart the operation of self head and face nursing at any time.

Description

Isolation operation type hood compatible with positive and negative pressure

Technical Field

The utility model belongs to the technical field of the medical protection device technique and specifically relates to a positive negative pressure compatible isolation operation type hood.

Background

In severe acute respiratory syndrome caused by respiratory infectious diseases such as SARS coronavirus (SARS-CoV) in 2003, since the virus has the characteristic of human transmission, it can spread via airway droplets, leading to death of many patients including medical staff, causing social panic, and SARS is found to be the most contagious in respiratory tract as found in the investigation and analysis of SARS infection factors in medical staff. When a medical worker rescues a patient, the medical worker needs to use a breathing machine or perform trachea intubation, sputum suction and other operations which are easy to generate droplet aerosol, the medical worker is infected in the process, the infection rate reaches 100%, and the prompt is as follows: when a medical staff rescues a patient and carries out various treatment operations, respiratory tract protection should be enhanced, the medical staff should strictly obey a standard prevention system and strictly isolate the patient (Song Jinlan, Korean swallow and Ru; 18 cases of SARS infection survey and analysis of medical staff [ J ]; J. Hospital Infection, 2004 year 06); in the response of the novel coronavirus pneumonia at the end of 2019, the anesthetic society of the Chinese medical society combines the anesthesia society of the Chinese physician association with the requirements for trachea cannula operation in the anesthesia and nursing operation specifications and procedures of suspected and infected novel coronavirus patients, which are set by the anesthesia society of the Chinese physician in 28/1/2020: preparing 'wearing hand washing clothes and trousers internally, wearing medical N95 mask, disposable working cap, medical goggles (or eye protection screen), coat C-grade protective clothing, disposable latex gloves and disposable knee-supporting shoe covers' according to three-level protection; oxygen was given "to cover the patient's mouth and nose with 2 pieces of wet gauze" before induction; before trachea intubation, "enough muscle is loosened to prevent cough; after intubation, "after any contact operation with the patient, the latex gloves worn must be sprayed for disinfection"; and advices 'an operator wears a positive pressure type hood' under the condition and 'an external video laryngoscope is used to avoid contacting a patient at a short distance when intubating'. The reason for the above measures is that the patient cannot be placed in a difficult-to-operate airtight isolation suit or a narrow airtight isolation chamber because of the exposure requirements of the head and face operation and the surgical operation of the patient.

It is obvious that the current precautionary measures are only limited to passive protection of medical care, namely, wearing various protection preparations to strengthen medical care spray protection, but not actively and fundamentally preventing the spray of a patient which is difficult to control from being limited to a controllable range, so that the spreading and pollution of pathogenic viruses in an open environment are caused, the medical care precautionary pressure is increased, huge consumption of medical care protective equipment is caused, the huge workload of environmental disinfection is increased, and the hidden danger of propagation cannot be fundamentally eliminated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a compatible isolation operation type hood of positive negative pressure can satisfy medical personnel and keep apart the demand of operation to patient's head and face, alleviates medical personnel's guard against pressure, also can be used to medical personnel's isolation protection itself simultaneously, makes things convenient for medical personnel to keep apart the operation to self head and face nursing at any time.

In order to achieve the above purpose, the technical scheme of the utility model is that:

an isolation operation type hood compatible with positive pressure and negative pressure comprises a hood body, wherein the hood body is provided with a positive pressure and/or negative pressure device connecting channel and can be attached to the shoulder or the upper body of a human body in a matching manner; the hood body is provided with at least one operation hole, and the operation hole is connected with an isolation operation glove and/or a sealing device.

Preferably, the hood body is made of transparent materials, or the front part of the hood body is provided with a transparent observation window.

Preferably, the operation hole is designed for matching and arranging operation isolation operation gloves, the hood body is provided with the operation hole, and the isolation operation gloves are connected to the inner side of the operation hole in a sealing manner; folding marks which can be pressed down and fixed are arranged on two sides of the front part of the hood body; or both sides of the hood body are provided with foldable elastic body structures. More preferably, the first fixing piece is arranged at the folding crease or on the side edge of the folding crease, and the second fixing pieces capable of being fixed with the first fixing pieces are arranged on two sides of the rear part of the hood body in a matched mode. More preferably, the first fixing piece and the second fixing piece are snap stickers, buckles or snap buttons which can be connected in a matching mode, or the second fixing piece is a groove which can be inserted into a protrusion formed at the folding indentation in a matching mode.

Preferably, the inner wall of the bottom of the hood body is annularly provided with one circle or two circles or more of flexible film-shaped conformable materials. The flexible film conformable material may have a sealing function, and/or a microbial filtration function, and/or an isolation function.

The bottom of the hood body extends downwards to form an annular buffer barrier layer in sealing connection with the hood body. The annular buffer barrier has a microbial filtration and/or isolation function.

Preferably, the bottom of the hood body is provided with a rope sleeve tightening mechanism capable of being tightened; or the bottom of the hood body is connected with a fixing belt.

Preferably, the sealing means is a flap. The number and the position of the operation holes designed for the matching arrangement of the sealing device are not limited, and the operation holes are arranged according to the operation requirement to form an operation channel which has air tightness and can be used for external intervention. The relationship between the operation holes and the valves can be a one-to-one corresponding single-hole single-channel structure, or a large operation hole with one or more valves arranged thereon to form a single-hole multi-channel structure.

Preferably, a transfer mechanism is arranged in the valve, the transfer mechanism is provided with an inlet capable of opening and closing towards the outer side and the inner side of the valve, and the transfer mechanism is matched with the inlet capable of transferring articles in an external specified size range to the interior of the head cover body in an isolated manner.

Wherein, the isolation operation gloves are preferably made of microorganism isolation materials.

The isolation operation type hood compatible with positive pressure and negative pressure is provided with an operation hole, and the operation hole can be hermetically connected with an isolation operation glove and/or a sealing device such as a valve according to needs.

When the operation gloves are kept apart to handle hole sealing connection, when using, cover the hood in patient's head, the bottom of hood body pastes at patient's shoulder or upper part of the body position, let the patient lie in the bed, open negative pressure device, hood body front portion remains great operating space with patient's face, medical personnel carry out relevant operation to the patient from keeping apart operation gloves, so can be with patient's droplet limitation in the hood, greatly reduced medical personnel's probability of infecting, medical personnel's the pressure of taking precautions against has been alleviateed.

When the operation hole is connected with a sealing device such as a valve, an airtight operation channel for external intervention can be formed through the sealing device, and the operation channel is used for external intervention such as sputum suction, fiberbronchoscopy or external pipeline entry for medical personnel. More preferably, the valve is further provided with a transfer mechanism, the transfer mechanism is provided with an inlet capable of opening and closing towards the outer side and the inner side of the valve, and the transfer mechanism is matched with the article in the external specified size range to be isolated and transferred into the head cover body, so that the probability of mutual pollution between the head cover body and the outside of the head cover body in the article transfer process can be better reduced.

Further, the utility model discloses the compression mode still has, crease mark or folding elastomer structure have been set up, when not operating, can press down or fold folding elastomer structure along the crease mark, so reduce the anterior space with the patient face of hood body, form the partition region in hood body both sides, thereby can accomodate isolation operation gloves in this partition region, prevent that isolation operation gloves from covering patient's mouth and nose and taking precautions against the unexpected incident and take place, also reduce the contaminated degree of isolation operation gloves, the security of hood use has been improved. The utility model discloses a required big space requirement when variable volume design can satisfy the operation of head face portion in the hood, and when need not the operation, collapsible will hood inner space reduces, so can fall to minimum to the interference of action and sight daily.

Additionally, the utility model discloses the specially adapted medical personnel, under the condition of connecting the malleation device, can be used to medical personnel's isolation protection itself, make things convenient for medical personnel to keep apart the operation of self facial nursing at any time simultaneously, especially under opening the compression mode, can avoid the interference of built-in isolation operation gloves to the head face, the face guard inner space reduces moreover, anterior transparent observation window or transparent part are more close to medical care face, the definition is better under the relative long-distance operation mode, use with ordinary face guard and experience the free from extraneous phenomenon.

Drawings

Fig. 1 is a schematic structural view of the operation state of an embodiment of the present invention (including an isolation operation glove).

Fig. 2 is a schematic front view of the non-operation state of the present invention (including the isolated operation glove).

Fig. 3 is a left side view of the operation state of the glove (including the isolation operation glove) according to an embodiment of the present invention.

Fig. 4 is a left side view of the non-operation state of the present invention (including the isolation operation glove).

Fig. 5 is a schematic front view of the operation state of another embodiment of the present invention (including the isolated operation glove).

Fig. 6 is a schematic front view of the non-operation state of another embodiment of the present invention (including the isolation operation glove).

Fig. 7 is a left side view of the operation state of another embodiment of the present invention (with isolated operating gloves).

Fig. 8 is a left side view of the non-operating state of another embodiment of the present invention (with the isolated operating glove).

Fig. 9 is a schematic front view of an embodiment of the present invention (including a flap).

Fig. 10 is a front view of a glove (including a valve and an isolation operating glove) according to an embodiment of the present invention.

Fig. 11 is a schematic front view of an embodiment of a flap.

Fig. 12 is a schematic view of the mid-section structure of fig. 11.

Fig. 13 is a schematic front view of another embodiment of the flapper.

Fig. 14 is a schematic view of the mid-section structure of fig. 13.

Fig. 15 is a schematic structural view of another embodiment of the flapper.

In the figure, a hood body 1, an operation hole 2, an isolation operation glove 3, a folding trace 4, a positive pressure and negative pressure device connecting channel 5, a lower snap fastener 6, an upper snap fastener 7, a flap 8, a multi-flap fixing seat 9, a single-flap fixing seat 10, an iron block 11, a separation block 12, a magnet 13, an isolation piece 14, a rubber flap 15, an isolation bag 16 and a rubber band 17.

Detailed Description

The present invention will be further described with reference to the following drawings and examples, but the scope of the present invention is not limited to the following examples.

Example 1

As shown in fig. 1-4, an isolation operation type hood compatible with positive and negative pressure, including hood body 1, hood body 1 is provided with malleation and/or negative pressure device connecting channel, and that is, hood body 1 sets up malleation device connecting channel or negative pressure device connecting channel or malleation and negative pressure device connecting channel 5 alone as required, and the setting of above-mentioned connecting channel and the connected mode with positive and negative pressure generating device have been prior art, can be as utility model patent "positive, negative pressure dynamic gas purification protection casing" of publication No. CN2673362Y, utility model patent of publication No. CN206261910U "a suction anesthesia hood that can keep autonomic breathing", and the improvement part of this embodiment is: the head cover body 1 can be matched and attached to the shoulder or the upper body of a human body; the hood body 1 is provided with an operation hole 2, and the inner side of the operation hole 2 is hermetically connected with an isolation operation glove 3. Generally, when the isolation operation gloves 3 are arranged in the operation holes 2 in a matching manner, the operation holes 2 are mostly arranged on two sides of the head cover body 1. The design of hood body 1 is pasted in human shoulder or upper part of the body, on the one hand is considered from patient's security and travelling comfort, do not design in the neck, in order to tie in patient's neck, make the patient feel the breathing difficulty, dangerous patient life even when serious, on the other hand, shoulder or upper part of the body are wide and flat, hood body 1 is changeed in realizing pasting with patient's body, so that the inside better realization malleation or the negative pressure state of hood body, it is better to paste in the shoulder in general design, do not influence the operation. During the use, cover the hood in patient's head, paste in patient shoulder or upper part of the body position in the bottom of hood body 1, let the patient lie in the bed, be connected positive negative pressure generating device and malleation and negative pressure device interface channel 5, open the negative pressure device, 1 front portions of hood body remain with patient's face has great operating space, medical personnel carry out relevant operation to the patient from keeping apart operating glove 3, operating hole 2 and isolation operating glove 3 have been designed to this embodiment, make medical personnel can stretch into in keeping apart operating glove 3 with the hand from the 1 outside of hood body, carry out each item medical operation to the patient in hood body 1. The inner side of the operation hole 2 is hermetically connected with the isolation operation glove 3, which means that the connection part of the operation hole 2 and the isolation operation glove 3 is tightly connected and airtight, so as to realize the positive pressure and negative pressure states in the hood body 1. The negative pressure device connecting channel or the positive pressure and negative pressure device connecting channel 5 is generally provided with a filter mechanism, and the filter mechanism is detachable, and is generally a filter cotton/filter with a microorganism filtering function, such as medical grade N95, N99 and N100, so as to filter harmful impurities, microorganisms and the like. The hood is also suitable for medical workers, can be used for isolation protection of the medical workers under the condition of connecting the positive pressure device, and is convenient for the isolation operation of the medical workers for nursing the head and the face at any time. It should be noted that the positive and/or negative pressure devices may be disposed on, but not limited to, two sides of the hood body 1 as shown in the drawings, and they are not necessarily symmetrically distributed as shown in the drawings, and the number of the positive and/or negative pressure devices may be multiple.

Preferably, the hood body 1 is made of transparent material, or the front part of the hood body 1 is a transparent observation window, so that the face of the patient can be observed conveniently for medical operation.

Preferably, the hood body 1 is made of a flexible material to have a certain supporting force and deformability, and is generally in a thin-wall cylindrical structure, so that the medical staff can adjust the space in different positions in the hood body 1 as required during operation. The flexible material can be a single material, such as transparent PET plastic, or more than 2 materials, such as transparent PET plastic, as the main body part, and thermoplastic elastomer, such as TPE/TPR rubber, adhered or thermally fused at the edge thereof, as the deformable folding part; or flexible plastics are used as a main body structure, thermoplastic elastomers such as TPE/TPR rubber are pasted or thermally fused on the main body structure to be used as a folding part, and finally the transparent glass observation window is pasted at the corresponding position of the main body structure to be compounded, the hardness of the material of the hood body 1 can maintain the initial shape under certain positive and negative pressure, and if the material requirement needs to be reduced or the larger positive and negative pressure is borne, a supporting framework can be arranged inside or outside the hood body 1.

Preferably, the hood body 1 also has a compression mode, which may be: the two sides of the front part of the hood body 1 are provided with folding marks 4 which can be pressed and fixed. As shown in the combined drawings 2 and 4, when the operation is not performed, the operation gloves can be pressed down along the folding marks 4, so that the space between the front part of the hood body 1 and the face of a patient is reduced, and the separation areas are formed on the two sides of the hood body 1, so that the isolation operation gloves 3 can be contained in the separation areas, the isolation operation gloves are prevented from covering the mouth and the nose of the patient, the pollution degree of the isolation operation gloves 3 is reduced, and the use safety of the hood is improved. Because the hood body 1 has certain flexibility, the folding impression 4 presses according to a preset shape, and a better separation area can be kept to separate the separation operation gloves 3. If the form of the folding indentation 4 is not used, the compression mode may be: the two sides of the hood body are provided with foldable elastic body structures (not shown in the figure), like the foldable structures at the two sides of a folding bathtub, each side comprises three folding marks, the folding mark in the middle is folded inwards, the folding marks at the two sides are folded and leaned together, and the space of the hood body 1 can be reduced. The elastomer structure is communicated with other parts of the hood body 1, and the isolation operation gloves 3 are contained in a separation area surrounded by the elastomer structure when being folded together.

Preferably, the inner wall of the bottom of the hood body 1 is provided with 1 or 2 or more circles of flexible film-shaped conformable material in a surrounding manner, the flexible film-shaped conformable material has a sealing function, and/or a microbial filtering function, and/or an isolating function, so that the sealing requirement of the hood body 1 and the shoulders or the upper body of a human body and the requirement of filtering and isolating flying foam are met, the flexible film-shaped conformable material can be rubber, silica gel, PE or N95 filter cotton and the like, and the requirement of appropriate tightness of positive pressure or negative pressure is met, so that the relative positive pressure or negative pressure state inside the hood body 1 can be realized, and the leakage of infectious flying foam is limited.

Preferably, the bottom of the hood body 1 extends downwardly with an annular cushioning barrier (not shown) in sealing connection therewith, the annular cushioning barrier having a microbiological filtering and/or isolation function. The annular buffer barrier layer can be made of waterproof cloth, plays a role in buffering the spray when the sealing of the flexible film-shaped conformable material fails, and can be well attached to the shoulder or the upper body of a human body from the buffering effect.

Preferably, the bottom of hood body 1 is provided with the rope sling tightening mechanism that can tighten up (not shown in the figure), strengthens the fixed effect of hood body 1 and human shoulder or upper part of the body, also can reach better sealed effect simultaneously, and this rope sling tightening mechanism can be that the bottom of hood body 1 is connected with one end open-ended annular cover, and the stay cord passes this annular cover, and the annular cover outside is all stretched out at both ends, and both ends are taut to tie up can fix. Such as a cloth bag capable of closing up or a closing-up structure at the brim of the clothes. If the fixing function is simply met, the fixing band (not shown in the figure) can be connected to the bottom of the head cover body 1 and penetrates through the armpits to be fixed or fixed on clothes or a back strap, so that stability is enhanced, and convenience and mobility are achieved.

Preferably, the isolation operation gloves 3 are made of microorganism isolation materials, such as latex or butyronitrile, so as to meet the isolation requirement.

Example 2

Embodiment 2 is basically the same as embodiment 1, and is shown in fig. 5 to 8, but a first fixing member and a second fixing member are additionally provided to ensure that a partition region can be stably partitioned.

The first fixing piece is arranged at the position of the fold mark 4 or on the side of the fold mark 4, and the second fixing piece which can be fixed with the first fixing piece is arranged on the two sides of the rear part of the hood body 1 in a matched mode. The first fixing member and the second fixing member are connected together to form a separation region with the inner wall of the hood body 1. The access opening 2 is preferably between the first and second attachment means.

The first fixing piece and the second fixing piece are matched and connected character snap stickers, buckles or snap buttons, or the second fixing piece is a groove and can be matched with a protrusion formed at the position of the folding indentation, and the protrusion can be the first fixing piece. As shown in fig. 5 to 8, in order to adopt snap fasteners as the first fixing member and the second fixing member, the snap fasteners 7 are arranged on the side of the folding crease 4, the snap fasteners 6 are arranged on the two sides of the rear portion of the hood body 1, the snap fasteners are fastened together, and the isolation operation glove 3 is isolated in the separation area.

In addition, if the compression mode adopts not the crease mark 4, but the both sides of hood body 1 are provided with folding elastomer structure, also can increase first mounting and second mounting equally, at this moment, when elastomer structure is folding, the position department that the crease in the middle is pressed close to the hood body inner wall sets up first mounting and second mounting towards one side in hood body middle part, first mounting sets up at hood body front portion, the second mounting sets up at hood body rear portion, when first mounting and second mounting link together, folding elastomer structure then compresses together, form the partition region, accomodate isolation operation gloves 3 in the partition region that elastomer structure encloses.

Example 3

Example 2 is substantially the same as example 1, shown in connection with figure 9, but without the isolation operating glove 3, and without the compression mode.

The position of the operation hole 2 is not limited, the number is not limited, a sealing device is arranged in a matching way, the sealing device is preferably a valve 8, the valve 8 is used for shielding the operation hole 2, the valve 8 is in a closed mode in a normal positive pressure or negative pressure state, but can be opened when artificial or mechanical external force intervenes. The valve 8 is arranged according to the operation requirement, forms an airtight operation channel for external intervention, and is used for medical staff to perform external intervention such as sputum aspiration, fiberbronchoscopy or external pipeline entering. The relationship between the operation hole and the valve can be a single-hole single-channel structure corresponding to one another as shown in fig. 9, or a single-hole multi-channel structure formed by arranging one or more valves on a large operation hole. The structure is similar to a valve structure used for operating a laparoscope at present, and the principle is that carbon dioxide gas is filled into an abdominal cavity, so that positive pressure expansion is formed in the abdominal cavity to realize an operation space, and then external instruments enter the abdominal cavity through an airtight operation channel to be operated. The structure of the single-hole multi-channel is like a disposable single-hole type casing puncture outfit which is produced by Hangzhou Kangji medical instrument company at present.

Example 4

As shown in fig. 10, this embodiment includes the structure of embodiment 1, and the sealing device of embodiment 3. Namely, at least three operation holes 2 are provided, two operation holes are used for sealing and connecting the isolated operation gloves 3, and at least one operation hole is used for arranging a valve 8.

In addition, as for the structure of the flap 8, the present embodiment provides three embodiments, but is not limited to the following three embodiments.

Embodiment 1: as shown in fig. 11 and 12, the disposable respirator comprises a single valve fixing seat 10, an iron block 11, a blocking block 12, a magnet 13 and a partition 14, wherein the single valve fixing seat 10 is annular, an outer groove is arranged on the periphery of the single valve fixing seat and is matched and clamped at an operation channel of the hood body 1 or the multi-valve fixing seat 9 at the periphery of an operation hole 2, an annular inner groove is also arranged on the inner wall of the single valve fixing seat 10, the blocking block 12 is annularly arranged at the upper part of the annular inner groove, the air tightness of the valve can be ensured by enclosing the intervention instrument during external intervention treatment, the lower part of the annular inner groove is provided with an iron block 11, the lower surface of one side of the iron block 11 is hinged with a round magnet 13, the magnet can block the space in the center of the iron block, a partition 14 is further fixed below the single valve fixing seat 10, the center of the partition 14 is also provided with a hole for accommodating the intervention instrument to enter, and meanwhile, the partition can keep certain air tightness during the intervention treatment, and is preferably made of elastic materials. When the intervention instrument is forcibly inserted, the magnet 13 is opened, i.e. the opening of the flap is achieved. Of course, the iron block 11 may be replaced with a magnet, or the magnet 13 and the iron block 11 may be replaced with each other.

Embodiment 2: as shown in figures 13 and 14, the rubber flap 15 is adopted, the periphery of the rubber flap 15 is fixed at the operation channel of the hood body 1 or the multi-flap fixing seat 9 at the periphery of the operation hole 2, the center of the rubber flap 15 is provided with an opening, the opening is in a closed mode due to the friction force of rubber under the normal positive pressure or negative pressure state, but when the intervention instrument is forcibly inserted, the opening is opened, namely, the flap is opened. The opening may be in the shape of a cross, a line, or the like.

Embodiment 3: as shown in fig. 15, the flap 8 includes an isolation bag 16 and a rubber band 17, the outer side of the isolation bag 16 is fixed at the operation channel of the hood body 1 or the multi-flap fixing seat 9 around the operation hole 2, the isolation bag 16 has openings at both ends, the openings are tight and air-tight, the outer end is bound by the rubber band 17, the inner end can be self-sealing (elastic structure or structure like the embodiments 1 and 2), thus forming a sealed buffer space (similar to the function of a transfer case), when an intervention instrument is inserted into the outer end opening, the rubber band can ensure that the flap is initially sealed, and then the flap is inserted into the operation hole 2, at this time, the intervention instrument is controlled from the inside by the isolation operation glove 3, and the possible leakage is avoided at the moment when the intervention instrument is inserted into the hood body 1. Of course, it is also possible to arrange a transfer mechanism at the position of the operation hole and between the openings at the two ends of the flap, the transfer mechanism is provided with openable inlets facing the outer side and the inner side of the flap, so that the intervention instrument can be put into the transfer mechanism from the outer end of the flap and then taken out from the inner end of the flap. Embodiment 3 can be added to embodiments 3 and 4 separately to serve as a buffer fuse.

Claims (10)

1. The utility model provides a compatible isolation operation type hood of positive negative pressure, includes the hood body, the hood body is provided with malleation and/or negative pressure device connecting channel, its characterized in that:

the hood body can be attached to the shoulder or the upper body of a human body in a matching manner;

the hood body is provided with at least one operation hole, and the operation hole is connected with an isolation operation glove and/or a sealing device.

2. The isolation operation hood of claim 1, wherein:

the hood body is made of transparent materials, or the front part of the hood body is provided with a transparent observation window.

3. The isolation operation hood of claim 1, wherein:

the helmet body is provided with an operation hole, and an isolation operation glove is connected to the operation hole in a sealing mode;

folding marks which can be pressed down and fixed are arranged on two sides of the front part of the hood body;

or both sides of the hood body are provided with foldable elastic body structures.

4. The isolation operation hood of claim 1, wherein:

the inner wall of the bottom of the hood body is annularly provided with one circle or two circles or more of flexible membranous conformable materials.

5. An isolation operation type hood as claimed in claim 1 or 4, wherein:

the bottom of the hood body extends downwards to form an annular buffer barrier layer in sealing connection with the hood body.

6. An isolation operation type hood as claimed in claim 1 or 4, wherein:

a rope sleeve tightening mechanism capable of being tightened is arranged at the bottom of the head cover body;

or the bottom of the hood body is connected with a fixing belt.

7. The isolation operation hood of claim 3, wherein:

the folding mark position or the folding mark side edge is provided with a first fixing piece, and the two sides of the rear part of the hood body are provided with second fixing pieces capable of being fixed with the first fixing pieces in a matched mode.

8. The isolation operation hood of claim 7, wherein:

the first fixing piece and the second fixing piece are snap stickers, buckles or snap buttons which can be connected in a matching way,

or the second fixing piece is a groove and can be inserted into a bulge formed at the folding indentation in a matching manner.

9. An isolation operation type hood as claimed in claim 1 or 3, wherein:

the sealing device is a valve.

10. The isolation operation hood of claim 9, wherein:

a transfer mechanism is arranged in the valve, and inlets which can be opened and closed are arranged on the transfer mechanism towards the outer side and the inner side of the valve.

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