WO2019223465A1

WO2019223465A1 - Laminated film sealing face mask

Info

Publication number: WO2019223465A1
Application number: PCT/CN2019/083339
Authority: WO
Inventors: 俞卫锋; 高宏; 黄东晓; 周俊; 魏铁钢; 王军; 王谦; 熊振天; 张雷波
Original assignee: 无锡圣诺亚科技有限公司
Priority date: 2018-05-24
Filing date: 2019-04-19
Publication date: 2019-11-28
Also published as: CN108635647A

Abstract

A face mask, comprising a mask shell (1), and at least two loops of laminated sealing ring film (5) provided at a mouth portion of the mask shell (1) so as to enhance the sealing effect when the mask shell (1) is attached to the face. A positioning groove (6) is provided on the sealing ring film for accommodating a digestive tract tube, and a connecting sealing piece (7) attached to the digestive tract tube is disposed so as to improve gas leakage when the digestive tract tube is provided. The foregoing face mask is provided with two rotatable mask shell connectors (2) that act as connection ports for a ventilator and other operation instruments, and a detachable sealing valve (11) is provided in the operating instrument port so as to maintain breathing support while performing a bronchoscopy or gastroscopy examination.

Description

Laminated film sealing mask

Technical field

The invention relates to a mask, in particular to a laminated film sealing mask, and belongs to the technical field of medical equipment.

Background technique

The tightness of the mask during ventilation is very important. Reliable tightness is an important criterion for the practicality of the mask. At present, most clinical masks use airbag compression seals. In most patients, their airtightness is sufficient to meet clinical needs, but it is inconvenient to inflate the airbag before use. When a gastric tube or a duodenal nutrition tube is inserted into a patient, the current mask is ventilated because the sides of the tube body form a gap with the patient's skin, resulting in a large amount of gas leakage, which cannot effectively support the patient's mask breathing support.

In response to this situation, various measures have been adopted clinically, such as: providing a catheter exit hole in the mask, and passing the catheter out of the mask cavity before ventilation, but this method is cumbersome and extremely inconvenient to use; Penetrating out of the nasal sulcus, the mask is strongly compressed during ventilation, but this method still has serious gas leakage, which can not even meet the ventilation requirements.

At present, intravenous anesthesia is performed during bronchoscopy or gastroscopy. When respiratory depression occurs, masks are often used for respiratory support. At this time, the examination must be interrupted to facilitate the supply of oxygen to the mask, which brings potential safety hazards to the patient, which seriously affects the efficiency of the examination, leading to an increase in the risk of the examination and a significant extension of the time.

Clinical needs a simple and effective mask, which does not require inflation during use, can effectively seal the catheter and skin space in patients with nasal catheters, avoid mask ventilation gas leakage, and can provide respiratory support during gastroscopy or bronchoscopy to give clinical Brings great convenience and security.

Summary of the Invention

The purpose of the present invention is to overcome the shortcomings in the prior art, and provide a laminated film sealing mask, which has a compact structure, does not need to be inflated, can also prevent leakage of ventilation gas, can improve the degree of matching with the intubation of the digestive tract, and ensures wearing. Tightness, easy to use, safe and reliable.

According to the technical solution provided by the present invention, the laminated film sealing mask includes a cover shell and a cover cavity provided in the cover shell; at least two rings of seal ring membranes are arranged in the cover cavity, and the seal ring membranes are uniformly distributed on the The inside of the shell and the sealing ring membrane is close to the mouth of the body cavity. Several sealing ring membranes in the shell are laminated. When the shell is ventilated on the face, several sealing ring membranes can be in close contact with the face to strengthen the cover. Sealed state when the shell is fitted on the face.

Some or all of the sealing ring membranes in the casing are provided with positioning grooves adapted to the intubation of the digestive tract, and the positioning grooves on different sealing ring membranes correspond.

A connecting sealing sheet adapted to fit a gastrointestinal cannula is provided on the inner edge of the sealing ring membrane, the connecting sealing sheet corresponds to a positioning groove on the sealing ring membrane, and the connecting sealing sheet is located inside the positioning groove .

A connecting and fitting body is arranged on the cover, the connecting and fitting body is located at the head end of the cover, the shape of the connecting and fitting body is adapted to the shape of the cover, and the cover can be in contact with the face through the connecting and fitting body;

The seal ring membrane is fixedly connected to the inner wall of the connection fitting, the seal ring membranes are parallel to each other, and the seal ring membrane and the connection fitting are used to be parallel to the surface of the face.

The seal ring membranes are parallel to each other. The cross section of the seal ring membrane is L-shaped. The seal ring membrane is vertically arranged on the connection body. The length direction of the seal ring membrane is consistent with the length direction of the casing.

The back of the cover is provided with two cover connectors corresponding to the positions of the nose and mouth after being worn, and the cover connectors are in communication with the cover cavity in the cover.

The cover connector is assembled on the cover connector, the cover connector is adapted to connect with the cover, and the cover connector can be rotated on the cover.

A detachably connected operation sealing valve is provided in the casing connector, the operation sealing valve can allow the operation instrument to be inserted into the casing connector after being put on, and after the operation instrument is inserted into the casing connector, The sealing connector can be sealed by operating the sealing valve.

It also includes an operation connection tube that can be adapted to the housing connector. One end of the operation connection tube can be detachably connected to the housing connector. The other end of the operation connection tube is provided with an operation sealing valve that allows the operation instrument to pass through. The operation sealing valve can seal the operation connection pipe penetrating the operation instrument.

The operation sealing valve includes a valve body connecting plate and a valve body sleeve adapted to be connected to the valve body connecting plate, and a plurality of cutouts penetrating the valve body sleeve cylinder bottom are provided on the cylinder bottom of the valve body sleeve, The operation instrument can pass through the valve body sleeve through a cutout at the bottom of the valve body sleeve.

The invention has the advantages that at least two seal ring membranes are arranged in the cover shell, and the seal ring membranes are laminated. By using the contact of two or more seal ring membranes with the face, the seal can be effectively improved without the need of an airbag. The sense of layering improves the reliability of the seal. To ensure the long-term wearing tightness, the sealing ring membrane can be fitted with the digestive tract tube through positioning grooves and connecting seals to prevent the gastrointestinal tube from affecting the sealing of the mask. Convenient, safe and reliable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a perspective view of a connecting sealing sheet provided on a sealing ring film according to the present invention.

FIG. 3 is a detailed enlarged view of a sealing ring film according to the present invention.

FIG. 4 is a schematic diagram of the cooperation between the seal ring membrane and the connection and fitting body of the present invention.

FIG. 5 is a schematic diagram of two shell connectors provided on the shell of the present invention.

FIG. 6 is a schematic diagram of the cooperation between the cover connector and the operation connecting pipe according to the present invention.

FIG. 7 is a schematic structural diagram of an operation connecting pipe according to the present invention.

FIG. 8 is a schematic structural view of an operating sealed valve according to the present invention.

DESCRIPTION OF SYMBOLS: 1-housing, 2-housing connector, 3-connecting fitting, 4-housing cavity, 5-sealing ring membrane, 6-positioning groove, 7-connecting sealing sheet, 8-connecting post , 9-connecting column base, 10-operating connecting tube, 11-operating sealing valve, 12-cut, 13-valve connecting plate, 14-connecting plate connecting hole, and 15-valve body sleeve.

Detailed ways

The present invention is further described below with reference to specific drawings and embodiments.

As shown in FIG. 1: In order to ensure the tightness when worn and improve the convenience of use, the present invention includes a cover 1 and a cover cavity 4 provided in the cover 1; at least two are provided in the cover cavity 4 Ring seal ring membrane 5, the seal ring membrane 5 is uniformly distributed inside the cover 1 and the seal ring membrane 5 is close to the mouth of the cover body cavity 4, and several seal ring membranes 5 in the cover 1 are laminated; the cover 1 is covered by When the face is ventilated, a plurality of sealing ring membranes 5 can be brought into close contact with the face, so as to enhance the sealed state of the cover 1 when the face is adhered to the face.

Specifically, the cover shell 1 and the sealing ring membrane 5 are all made of materials conforming to medical standards. The cover shell 1 is in the shape of a cover. The shape of the cover shell 1 is consistent with the existing mask. The cover body cavity 4 is located in the cover shell 1. The cover body cavity 4 can realize gas storage and gas exchange during ventilation. The cover case 1 is further provided with a cover connector 2, and the cover connector 2 is in communication with the cover body cavity 4 in the cover 1. The housing connector 2 can be connected to an external air supply device. The housing 1 has an opening at one end, and the opening of the housing 1 is the mouth of the housing cavity 4.

In order to enhance the sealing state when the cover 1 is attached to the face, at least two rings of the seal ring film 5 are provided in the cover 1. The cross section of the seal ring film 5 is annular, and the ring-shaped seal ring film 5 will not affect the cover. 1 normal air supply. The seal ring membrane 5 is uniformly distributed in the casing 1, that is, the shape of the cross section of the seal ring membrane 5 is consistent with the shape of the casing 1. Two or more turns of the seal ring membrane 5 in the casing 1 are laminated, that is, the seal ring The membrane 5 gradually extends to the center of the casing 1 in the casing 1; and the size of the seal ring membrane 5 near the opening of the casing 1 is the smallest. When the opening of the cover 1 is attached to the face, the seal ring membrane 5 is close to the face. Under the action of the positive pressure in the body cavity 4, the seal ring membrane 5 can be tightly attached to the face, that is, the seal ring membrane 5 and the The close contact of the face can enhance the sealed state when the cover 1 is attached to the face. During use, due to the existence of the positive pressure in the body cavity 4, the sealing ring membrane 5 can be fitted to the face. In the case where no airbag is used and the airbag is inflated, gas leakage during ventilation can be avoided, and the cover can be realized. The tightness of the case 1 when worn is convenient to use.

In addition, the gap between adjacent seal ring membranes 5 in the casing 1 is 1 mm to 3 mm. In the embodiment of the present invention, there are gaps between the seal ring films 5 and the number of the seal ring films 5 can be selected according to needs. When the laminated seal ring films 5 are in close contact with the face, they can effectively form a layered sense, thereby achieving a layered appearance. Compared with the face mask, it can ensure the tightness when worn for a long time.

Further, a part or all of the sealing ring membranes 5 in the casing 1 are provided with positioning grooves 6 adapted to the intubation of the digestive tract, and the positioning grooves 6 on different sealing ring membranes 5 correspond.

In the embodiment of the present invention, the positioning grooves 6 may be provided on a part of the seal ring membrane 5, or all of the seal ring membranes 5 may be provided with a positioning groove 6, which may be specifically selected according to needs, and details are not described herein again. The shape of the positioning groove 6 is adapted to the placement of the digestive tract, that is, the positioning of the positioning groove 6 can be used to position and place the digestive tract. When the digestive tract is embedded in the positioning groove 6, the digestive tract can be avoided. The tube influences the sealing state when the cover 1 is supplied with air. When a plurality of positioning grooves 6 are provided on the plurality of sealing ring membranes 5, the positioning grooves 6 on the sealing ring membrane 5 correspond, that is, the plurality of positioning grooves 6 are coaxially distributed, and the plurality of positioning grooves 6 are located on the same Straight line, so as to meet the positioning of the gastrointestinal catheter.

In specific implementation, the positioning grooves 6 are distributed on one side of the seal ring film 5 or are symmetrically distributed on the seal ring film 5. In the embodiment of the present invention, the positioning grooves 6 may be distributed only on one side of the sealing ring membrane 5. Of course, the positioning grooves 6 may also be symmetrically distributed on the sealing ring membrane 5. Specifically, the positioning grooves 6 may be selected according to requirements. When the grooves 6 are symmetrically distributed on the sealing ring membrane 5, the placement position of the intubation tube of the digestive tract has more position options, and the convenience of use is improved. When the positioning grooves 6 are symmetrically distributed on the seal ring membrane 5, the positioning grooves 6 on the same side are located on the same straight line.

As shown in FIG. 2 and FIG. 3, a connecting sealing sheet 7 adapted to fit a gastrointestinal cannula is provided on the inner edge of the sealing ring membrane 5, and the positioning of the connecting sealing sheet 7 and the sealing ring membrane 5 is provided. The groove 6 corresponds, and the connection sealing piece 7 is located inside the positioning groove 6.

In the embodiment of the present invention, the connecting sealing sheet 7 is on the sealing ring membrane 5 and corresponds to the positioning groove 6 on the sealing ring membrane 5, and the connecting sealing sheet 7 is located on the inner side of the positioning groove 6 (the inner side means close to the cover One side of the inner center of the shell 1); when the positioning grooves 6 on the same side are located on the same straight line, the connection sealing sheet 7 on the same side and the positioning grooves 6 are on the same straight line. When the gastrointestinal tube is placed in the corresponding positioning groove 6, the connection sealing sheet 7 can be fitted on the gastrointestinal tube, and the connection sealing sheet 7 can improve the gap between the gastrointestinal tube and the sealing ring membrane 5. The tightness further reduces the influence on the ventilation and tightness of the cover body 1 when the digestive tract is placed.

Of course, in specific implementation, a connection sealing sheet 7 adapted to fit a gastrointestinal cannula is provided on the inner edge of the sealing ring membrane 5, that is, the positioning ring 6 may be provided without a positioning groove 6. It is convenient to set a connection sealing sheet 7 on the inner edge of the sealing ring membrane 5. The connection sealing sheet 7 can be used to contact the gastrointestinal tube and the sealing ring membrane 5 to make the seal, reducing the ventilation and sealing of the cover 1 when the gastrointestinal tube is in place Impact.

Further, the cover shell 1 is provided with a connection fitting body 3. The connection fitting body 3 is located at the head end of the cover shell 1, the connection fitting body 3 is adapted to the shape of the cover shell 1, and the cover shell 1 is connected with the fitting body 3. Can fit with facial contact;

The seal ring film 5 is fixedly connected to the inner wall of the connection bonding body 3, the seal ring films 5 are parallel to each other, and the seal ring film 5 and the connection bonding body 3 are parallel to the surface of the face bonding.

In the embodiment of the present invention, the connecting and fitting body 3 is located at the head end of the cover 1. The connecting and fitting body 1 can realize the transition of the cover and shell 1, and the connecting and fitting body 3 can be attached to the face, and the connecting and fitting body 3 and the cover are connected. 1 can be integrated. In order to be able to assemble the seal ring membrane 5 in the casing 1, the seal ring membrane 5 is connected to the inner wall of the connection bonding body 3. For a plurality of stacked seal ring films 5, the seal ring films 5 are parallel to each other, and the seal ring film 5 and the connection bonding body 3 are parallel to the surface for face bonding. When the connection bonding body 3 is in contact with the face, At this time, the sealing ring film 5 can be parallel or similar to the face. When there is a gas in the body cavity 4, the positive pressure gas can make the sealing ring film 5 adhere to the face, thereby forming a multi-level seal with the face. To ensure the tightness for long-term wear.

In specific implementation, the thickness of the seal ring film 5 becomes gradually thinner in the direction in which the inner edge of the connecting and bonding body 3 points toward the center region of the cover 1. In the embodiment of the present invention, the thickness of the seal ring film 5 near the connection bonding body 3 is thicker, that is, the reliability of the connection with the connection bonding body 3 can be improved, while the thickness away from the connection bonding body 3 is thinner. Effectively press and fit on the face to achieve effective close contact with the face and achieve high sealing effect.

As shown in FIG. 4, the cover shell 1 is provided with a connection fitting body 3. The connection fit body 3 is located at the head end of the cover shell 1. The connection fit body 3 is adapted to the shape of the cover shell 1, and the cover shell 1 is connected by The fitting body 3 can contact and fit the face;

The seal ring membranes 5 are parallel to each other. The cross section of the seal ring membranes 5 is L-shaped. The seal ring membranes 5 are vertically arranged on the connection and bonding body 3. The length direction of the seal ring membranes 5 is consistent with the length direction of the cover 1.

In the embodiment of the present invention, the seal ring membrane 5 has a circular cylindrical shape, and the cross-section of the seal ring membrane 5 is L-shaped, but a plurality of seal ring membranes 5 still satisfy each other in parallel and are stacked. When the connecting and fitting body 3 is in close contact with the face, the sealing ring film 5 can be in a vertical or similar vertical state with the face. When there is a gas in the cover cavity 4, the positive pressure gas can still make the sealing ring film 5 tightly adhere. A multi-layered seal is formed between the face and the face to ensure tightness when worn.

As shown in FIG. 5, the back of the cover 1 is provided with two cover connectors 2 respectively corresponding to the nose and the mouth after being worn. The cover connectors 2 are connected to the cover cavity 4 in the cover 1. A plurality of evenly distributed connecting posts 8 are also provided between the two housing connector 2, and the connecting posts 8 are fixed on the housing 1.

In the embodiment of the present invention, the shell connector 2 is located on the back of the shell 1, the shell connector 2 is in communication with the shell cavity 4, and the number of the shell connectors 2 on the shell 1 is two. When the shell 1 is worn Later, the two shell connectors 2 can correspond to the nose and mouth of the wearer respectively, and any of the shell connectors 2 on the back of the shell 1 can be connected to the ventilator, that is, through any of the shell connectors 2 After being connected to the ventilator, it can realize respiratory support and improve the convenience of respiratory support. In general, when only respiratory support is needed, only one housing connector 2 is needed to connect to the ventilator.

A plurality of connecting posts 8 are also provided on the back of the housing 1. The connecting posts 8 are fixedly assembled on the housing 1 through the connecting post base 9. The connecting posts 8 are located between the two housing connectors 2. Generally, the housing 1 is provided on the housing 1. Four evenly distributed connecting posts 8 are provided, and the height of the connecting posts 8 is smaller than the height of the housing connector 2. When the cover 1 is worn on the face, it generally needs to be fixed to the head by a mask belt. The mask belt on the cover 1 can be adapted to be connected to the connection post 8. After the mask belt is connected to the connection post 8, the cover 1 can be realized. Stable wearing, improving the convenience of wearing the mask 1.

In specific implementation, the casing connector 2 is assembled on the casing connector connector, the casing connector connector is adapted to be connected to the casing 1, and the casing connector connector can rotate on the casing 1 .

In the embodiment of the present invention, the shape of the shell connector connector body and the like are adapted to the shell 1, that is, the shell connector 2 is assembled on the back of the shell 1 through the shell connector connector, and the shell connector connector can be The cover 1 rotates, and when the cover connector connecting body rotates on the cover 1, the cover connector 2 can also rotate on the cover 1. The rotation between the casing connector connector body and the casing 1 adopts a conventionally used form. Generally, the casing connector connector body can rotate around the joint with the casing 1, and the casing connector connector body is in the casing 1. When turning up, the sealing performance of the entire cover 1 can still be ensured. Generally, the back surface of the cover 1 can be divided into two parts that can be rotated to form a cover connector connection body. Of course, other connection and fitting forms can also be used between the cover connector connection body and the cover 1. You can choose according to your needs. Of course, it may also include a positioning mechanism. The positioning mechanism may be in the form of a bump. The positioning mechanism can block the rotation of the housing connector connecting body relative to the housing 1. After the housing connector connecting body rotates relative to the housing 1, The cooperation of the positioning mechanism and the shell connector connecting body enables the two shell connectors 2 on the shell connector connecting body to always correspond to the mouth and nose of the wearer, thereby improving the convenience of use.

In addition, a detachably connected operation sealing valve 11 is provided in the casing connector 2. The operation sealing valve 11 can allow the operation instrument to be inserted into the casing connector 2 after being put on, and the operation instrument can be inserted into the casing. After the casing connector 2 is inside, the casing connector 2 can be sealed by operating the sealing valve 11.

In the embodiment of the present invention, the operating sealing valve 11 can be detachably connected to the housing connector 2. When the operating sealing valve 11 is installed in the housing connector 2, the sealed housing connector 2 can be sealed. . Generally, the operation sealing valve 11 needs to be installed in the housing connector 2 when the operation instrument is required to enter the operation and does not affect the ventilation of the mask, and the operation sealing valve is not required to be installed in the housing connector 2 that needs to support breathing. 11. After the operation sealing valve 11 is installed, the sealing performance in the corresponding casing connector 2 can be maintained by using the operation sealing valve 11, that is, after the operation instrument passes through the operation sealing valve 11, it will not affect the punctured casing connector. The tightness of 2 does not affect the breathing support state of the mask.

As shown in FIG. 6 and FIG. 7, it further includes an operation connecting pipe 10 capable of being adapted to the housing connector 2. One end of the operation connecting pipe 10 can be detachably connected to the housing connector 11. The other end is provided with an operation sealing valve 11 that allows the operation instrument to pass through. The operation sealing valve 11 can be used to seal the operation connection pipe 10 that penetrates the operation instrument.

In the embodiment of the present invention, the operation connecting pipe 10 may be a telescopic bellows, and the operation connecting pipe 10 can be adapted to the housing connector 2, that is, the operation connecting pipe 10 can be detachably connected to the housing connector 2 and operatively connected. After the tube 10 is assembled on the casing connector 2, the operation connecting tube 10 can communicate with the casing connector 2. Generally, one of the housing connector 2 on the housing 1 is connected to the operation connecting pipe 10, that is, when one housing connector 2 is not connected to the operation connecting pipe 10, it can still be connected to the ventilator to achieve breathing support, and The operation connecting tube 10 connected to the housing connector 2 can realize the insertion of operation instruments and achieve the required instrument operations. The operation instruments passing through the operation sealing valve 11 are generally bronchoscopes or gastroscopes.

In specific implementation, when the operation connecting tube 10 is connected to a housing connector 2 corresponding to the nose, the operation connecting tube 10 can allow the bronchoscope to be inserted, and the bronchoscope passes through the operation sealing valve 11 and the operation connecting tube 10 in this order. After entering the body cavity 4 of the cover 1, a bronchoscope can be used to enter the nose of the wearer to achieve a bronchoscopy. At this time, there is no need to install and operate the sealing valve 11 in the housing connector 2 corresponding to the mouth of the wearer, and the housing connector 2 corresponding to the mouth needs to be connected to the ventilator, which guarantees the breathing support of the entire mask. At the same time, it is necessary to realize the examination of bronchoscope.

When the operation connecting tube 10 is connected to the 1-shell connector 2 corresponding to the mouth, the gastroscope can be allowed to pass through the operation connecting tube 10, and the gastroscope can sequentially pass through the operation sealing valve 11 and the operation connection tube 10 and enter the casing. In the mask body cavity 1 of 1, the tail of the patient wearing the mask can be examined by gastroscope. At this time, it is not necessary to install and operate the sealing valve 11 in the housing connector 2 corresponding to the nose of the wearer, and the housing connector 2 corresponding to the nose needs to be connected to the ventilator, that is, to ensure that the mask is supported by breathing. Can realize the inspection needs of micromirrors.

As shown in FIG. 8, the operation sealing valve 11 includes a valve body connecting plate 13 and a valve body sleeve 15 that is adapted to be connected to the valve body connecting plate 13. The valve body sleeve 15 is provided on the cylinder bottom of the valve body sleeve 15. A plurality of cutouts 12 penetrating the bottom of the cylinder of the valve body sleeve 15 can be penetrated by the operating instrument through the cutouts 12 of the bottom of the cylinder of the valve body sleeve 15.

In the embodiment of the present invention, the valve body connecting plate 13 is located on the outer ring of the cylinder mouth of the valve body sleeve 15. A plurality of connecting plate connecting holes 14 are provided on the valve connecting plate 13, and the valve connecting plate 13 can be connected through the connecting plate 14 It is assembled on the nozzle of the housing connector 2 or the operation connecting pipe 10. When the valve body connecting plate 13 is assembled on the nozzle of the housing connector 2 or the operation connecting pipe 10, the valve body sleeve 15 may be located in the housing connector 2 or the operation connecting pipe 10. The cutout 12 at the bottom of the valve body sleeve 15 penetrates the bottom of the valve body sleeve 15. The cutouts 12 are evenly distributed on the bottom of the valve body sleeve 15. FIG. 8 shows the barrel of the valve body sleeve 15. The bottom is provided with three evenly distributed cuts 12. The valve body sleeve 15 and the valve body connecting plate 13 are made of flexible plastic, and the valve body sleeve 15 is elastic. Therefore, different airway instruments can pass through the incision 12, and the valve body sleeve corresponding to the incision 12 The bottom of the cylinder 15 can be affixed to the outer wall of the operation instrument to achieve an effective seal after the operation instrument is put on and ensure the tightness of the housing connector 2 and the operation connection tube 10.

Claims

A laminated film sealing face mask includes a cover shell (1) and a cover cavity (4) provided in the cover shell (1); characterized in that at least two rings of sealing rings are arranged in the cover cavity (4) Membrane (5), sealing ring membrane (5) are uniformly distributed inside the casing (1) and the sealing ring membrane (5) is close to the mouth of the casing cavity (4), and several sealing ring membranes (5) inside the casing (1) ) Is laminated; when the cover (1) is ventilated on the face, several sealing ring membranes (5) can be brought into contact with the face to enhance the sealed state when the cover (1) is attached to the face.
The laminated film sealing mask according to claim 1, characterized in that: a part or all of the sealing ring membrane (5) in the casing (1) is provided with a positioning groove (6) adapted to the intubation of the digestive tract The positioning grooves (6) on the different sealing ring membranes (5) correspond.
The laminated film sealing face mask according to claim 2, characterized in that: a connecting sealing sheet (7) for fitting the digestive tract tube is provided on the inner edge of the sealing ring membrane (5), and the connecting seal The sheet (7) corresponds to the positioning groove (6) on the sealing ring film (5), and the connection sealing sheet (7) is located inside the positioning groove (6).
The laminated film sealing face mask according to claim 1, characterized in that: a connecting and attaching body (3) is provided on the cover (1), and the connecting and attaching body (3) is located at the head end of the cover (1), The shape of the connecting and fitting body (3) is adapted to the shape of the cover (1), and the cover (1) can be in contact with the face through the connecting and fitting body (3);

The sealing ring film (5) is fixed to the inner wall of the connecting and fitting body (3), the sealing ring films (5) are parallel to each other, and the sealing ring film (5) and the connecting and fitting body (3) are used for the surface to be fitted to the face parallel.
The laminated film sealing face mask according to claim 1, characterized in that: a connecting and attaching body (3) is provided on the cover (1), and the connecting and attaching body (3) is located at the head end of the cover (1), The shape of the connecting and fitting body (3) is adapted to the shape of the cover (1), and the cover (1) can be in contact with the face through the connecting and fitting body (3);

The seal ring membranes (5) are parallel to each other. The cross section of the seal ring membranes (5) is L-shaped. The seal ring membranes (5) are vertically arranged on the connecting body (3). The longitudinal direction of the seal ring membranes (5) and the cover The length direction of the shell (1) is consistent.
The laminated film sealing face mask according to claim 1, characterized in that: the back of the cover (1) is provided with two cover connectors (2) respectively corresponding to the positions of the nose and mouth after wearing, The cover connector (2) is in communication with the cover body cavity (4) in the cover (1).
The laminated film sealing face mask according to claim 6, characterized in that the cover connector (2) is assembled on the cover connector connector, and the cover connector connector is suitable for the cover (1). The connection body is connected, and the cover connector body can rotate on the cover (1).
The laminated film sealing mask according to claim 6 or 7, characterized in that: a detachably connected operation sealing valve (11) is provided in the cover connector (2), and the operation sealing valve (11) can The operating instrument is allowed to be inserted into the casing connector (2) after being put through, and after the operating instrument is inserted into the casing connector (2), the casing connector (2) can be performed by operating the sealing valve (11). seal.
The laminated film sealed face mask according to claim 6, further comprising an operation connecting pipe (10) capable of being matched with the cover connector (2), and one end of the operation connecting pipe (10) can be connected with the cover The shell connector (11) is detachably connected, and the other end of the operation connection pipe (10) is provided with an operation sealing valve (11) that allows the operation instrument to pass through. The operation sealing valve (11) can be used to penetrate the operation connection pipe of the operation instrument. (10) Sealing.
The laminated film sealing mask according to claim 8, wherein the operation sealing valve (11) comprises a valve body connecting plate (13) and a valve body sleeve adapted to be connected to the valve body connecting plate (13). A cylinder (15), a plurality of cutouts (12) passing through the cylinder bottom of the valve body sleeve (15) are provided on the cylinder bottom of the valve body sleeve (15), and an operation instrument passes through the valve body sleeve (15) The cutout (12) can penetrate the valve body sleeve (15).