An adjustable endoscopic surgical mask

Abstract

The present invention discloses an adjustable endoscopic surgical mask, which relates to the technical field of endoscopic masks and comprises a mask body, wherein the mask body comprises an outer layer and an inner layer, wherein the inner layer connects an oxygen supply port to an interface of an oxygen cylinder through a pipeline, and a front throttle for controlling the gas flow is provided at the oxygen supply port, a carbon dioxide outlet is provided on a sealing member, the sealing member is connected to a negative pressure device through a pipeline, and a rear throttle for controlling the gas flow is installed at the carbon dioxide outlet; a baffle is provided, and an exhalation collection layer is semi-closed by the baffle, so that the gas passes through the baffle, the energy of the carbon dioxide gas flow is weakened, and the range of carbon dioxide gas diffusion is reduced, so as to improve the oxygen quality at the nasal inhalation; according to the angle of the exhaled gas of different users, the carbon dioxide is integrated into the directionally moving gas, so as to effectively prevent the gas from flowing back into the mask, and reduce the risk of cross infection.

Description

Technical Field

[0001] The invention relates to the technical field of endoscope masks, in particular to an adjustable endoscope surgical mask. Background Art

[0002] The mask used for endoscopic surgery is an oxygen supply mask, which is a device that can transfer oxygen from a storage tank to the human lungs, thereby assisting the patient's breathing. It can also expel the patient's exhaled gas to avoid the accumulation of carbon dioxide. The traditional oxygen supply mask is composed of an oxygen storage tank, a mask, an exhaust pipe, and a carbon dioxide collection device. During use, the oxygen supply pipe inputs oxygen into the mask, and the patient's exhaled gas is expelled through the exhaust pipe and absorbed by the carbon dioxide collection device. This structure of the endoscopic surgery mask and its carbon dioxide collection device are currently the most widely used equipment.

[0003] A Chinese patent with authorization announcement number CN216676649U discloses an endoscopic surgical mask and a carbon dioxide collection device, comprising a mask body, a silicone sealing ring is provided around the mask opening of the mask body, and the nose-shaped part of the mask body is connected to an oxygen pipe and a nasal operation hole; the mouth-shaped part of the mask body is provided with an oral operation hole, and a card plate is embedded in the oral operation hole. When performing endoscopic examination, the oropharyngeal airway is inserted into the patient's mouth, and the teeth bite the bite tube to ensure that the patient's mouth is always in an open state to prevent the patient from biting the endoscope and causing damage to the endoscope. The oxygen pipe is externally connected to an air bag or a ventilator to provide oxygen to the patient, and a gastroscope is implanted into the patient's body through the oropharyngeal airway and the oral cavity through the endoscopic operation hole in the oral operation hole for examination. The carbon dioxide collection hole is externally connected to a carbon dioxide collector, and the exhaled gas is discharged through the carbon dioxide collection tube. The exhaled gas can be recovered in time through the carbon dioxide collector, and it is not easy to cause carbon dioxide gas reflux.

[0004] There are still certain limitations in the use of endoscopic surgical masks. Since the oxygen storage tube and the mask are always connected, and the exhaust pipe is also connected, oxygen is also supplied when the patient exhales. Carbon dioxide and oxygen are mixed together, resulting in a low concentration of oxygen inhaled by the user. The exhaled gas is prone to cross-infection of oxygen, which is harmful to the health of the body.

[0005] To this end, the present invention proposes an adjustable endoscopic surgical mask to solve the above-mentioned problems. Summary of the invention

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an adjustable endoscopic surgical mask, comprising: a mask body, a sealing member is inserted at the center of the mask body, and a drainage member is provided on the side of the sealing member facing the inside of the mask body, the drainage member is against the upper lip of the user, and is used to guide the exhaled gas into the inner cavity of the sealing member;

[0008] The drainage component includes a breathing tube, a lower diaphragm and an upper diaphragm. The upper diaphragm and the lower diaphragm are assembled into a combination whose inner cavity is consistent with the shape of the breathing tube. The combination slides on the surface of the breathing tube, and the inner wall of the upper diaphragm is provided with a baffle and a driving structure. The driving structure is used to adjust the clamping angle between the baffle and the upper diaphragm.

[0009] As a preferred embodiment of the adjustable endoscopic surgical mask of the present invention, the mask body is a double-layer structure, comprising an outer layer and an inner layer, the outer layer is provided with an inspection port penetrating the inner layer and used to guide the insertion of the endoscope; the outer layer is provided with an oxygen supply port, and a pipeline is connected to the oxygen supply port, and the pipeline is connected to the interface of the oxygen cylinder, and the sealing member is connected to the negative pressure device through the pipeline to guide the exhaled gas to be discharged.

[0010] As a preferred embodiment of the adjustable endoscopic surgical mask of the present invention, a memory sponge is integrally connected to one end of the lower diaphragm away from the mask body, and the memory sponge is used to contact with the user's upper lip and deform to seal, so that the gas exhaled through the nasal cavity can be introduced into the drainage piece.

[0011] As a preferred embodiment of the adjustable endoscopic surgical mask of the present invention, a cannula sleeve coaxial with the inspection port is inserted at the center of the sealing member, and two connecting plates are glued to the surface of the cannula sleeve, and the two connecting plates clamp the upper diaphragm and the lower diaphragm.

[0012] As a preferred solution of the adjustable endoscopic surgical mask of the present invention, the upper diaphragm and the lower diaphragm are made of polypropylene material and have cavities therein.

[0013] As a preferred embodiment of the adjustable endoscopic surgical mask of the present invention, a front throttle for controlling the gas flow is provided at the oxygen supply port, a carbon dioxide outlet is provided on the sealing member, and a rear throttle for controlling the gas flow is installed at the carbon dioxide outlet.

[0014] As a preferred solution of the adjustable endoscopic surgical mask of the present invention, it further comprises a microprocessing system, wherein the microprocessing system is equipped with a breathing sensing module, a data conversion module and a processing module;

[0015] The breathing sensing module is used to detect whether there is a temperature change caused by exhaled gas in the drainage piece and generate impedance data;

[0016] The data conversion module is used to obtain impedance data and generate an impedance curve image, and convert the impedance curve image information into a peak endpoint number, wherein the peak endpoint number represents the number of breaths within a unit breathing time;

[0017] The processing module is configured with historical data and a processing unit, and the processing unit is configured with a comparison threshold. The peak endpoint number output by the data conversion module is obtained, and the peak endpoint number is compared with the comparison threshold. If the peak endpoint number is greater than the comparison threshold, it indicates that breathing is suppressed, and an adjustment signal is generated. The adjustment angles of the front throttle and the rear throttle are controlled based on the adjustment signal, and a refresh signal is generated. The peak endpoint number is re-acquired based on the refresh signal and compared with the comparison threshold. If the angle between the front throttle and the oxygen supply port is 90 degrees or the angle between the rear throttle and the carbon dioxide outlet is 90 degrees, the peak endpoint number is higher than the comparison threshold, an alarm signal is generated, and the alarm device sounds an alarm;

[0018] If the number of peak endpoints is lower than the comparison threshold, an alarm signal is generated and the alarm goes off.

[0019] As a preferred solution of the adjustable endoscopic surgical mask described in the present invention, the breathing sensing module includes three groups of sensing components, which are respectively laid on the lower diaphragm near the memory sponge, the lower edge of the front side of the baffle, and the back side of the baffle, and the sensing components are used to measure the impedance data of the measured part.

[0020] As a preferred solution of the adjustable endoscopic surgical mask of the present invention, the processing module includes a breathing strategy, the breathing strategy is used to obtain impedance data measured by the sensing element laid on the lower diaphragm, and the data conversion module generates an impedance curve image and a peak endpoint number according to the impedance data measured by the sensing element on the lower diaphragm, and compares it with a comparison threshold to determine whether respiratory depression occurs;

[0021] The steps to determine whether respiratory depression occurs are as follows:

[0022] Obtaining impedance data measured by the sensing element on the lower diaphragm;

[0023] Generate an impedance curve image based on impedance data conversion, and convert the impedance curve image information into peak endpoint numbers;

[0024] The peak endpoint number is compared with a comparison threshold value, and if the peak endpoint number is greater than the comparison threshold value, it indicates that first-level respiratory depression occurs, and a regulation signal is generated;

[0025] The peak endpoint number is compared with a comparison threshold. If the peak endpoint number is less than the comparison threshold, it indicates that breathing is suppressed, and it is determined that secondary respiratory suppression occurs, and an alarm signal is generated.

[0026] As a preferred solution of the adjustable endoscopic surgical mask of the present invention, the processing module further includes a plate adjustment strategy, which is used to determine whether respiratory scattering occurs to adjust the angle of the baffle, and the plate adjustment strategy specifically includes:

[0027] Identify whether impedance data appears on the baffle, and if impedance data is detected on the back of the baffle, control the baffle to swing toward the upper diaphragm through the driving structure;

[0028] If impedance data is not detected on the back side of the baffle, but impedance data is detected on the front side of the baffle, the baffle is controlled by the driving structure to swing toward the lower diaphragm.

[0029] Beneficial effects of the present invention: The present invention sets a baffle and semi-closes the exhaled air collection layer through the baffle, so that the gas is baffled by the baffle to separate the oxygen and carbon dioxide, and baffle the carbon dioxide gas, thereby increasing the scattering times of the carbon dioxide gas, weakening the energy of the carbon dioxide gas flow, and reducing the range of carbon dioxide gas diffusion, so as to improve the oxygen quality at the nasal inhalation point; secondly, according to the angle of the exhaled air of different users, the angle between the baffle and the upper diaphragm is adjusted to achieve multiple scattering of the carbon dioxide gas, so that the carbon dioxide is integrated into the directionally moving gas and is driven by the driving force of the directional movement, thereby ensuring the one-way discharge of the exhaled air, effectively preventing the gas from flowing back into the mask, and reducing the risk of cross infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0031] Figure 1 It is a schematic diagram of the overall structure of the adjustable endoscopic surgical mask of the present invention;

[0032] Figure 2 AA cross-sectional view of the overall structural schematic diagram of the adjustable endoscopic surgical mask of the present invention;

[0033] Figure 3 It is a schematic diagram of the exploded structure of the adjustable endoscopic surgical mask of the present invention;

[0034] Figure 4 It is a schematic diagram of the explosion structure of the drainage member in the present invention;

[0035] Figure 5 It is a schematic diagram of the cross-sectional structure of the drainage member in the present invention;

[0036] Figure 6 It is a partial structural schematic diagram of the adjustable endoscopic surgical mask of the present invention;

[0037] Figure 7 It is a detailed diagram of the overall structure of the drainage member in the present invention;

[0038] Figure 8 The gas flow path in the flow guide of the present invention is Figure 1 ;

[0039] Fig. 9 The gas flow path in the flow guide of the present invention is Figure 2 ;

[0040] Fig.10 It is a schematic diagram of the details of the memory sponge structure of the present invention;

[0041] Fig.11 A diagram showing the laying area of ​​the induction element on the baffle surface of the present invention;

[0042] Fig.12 It is an impedance curve image generated based on impedance data in the present invention.

[0043] Figure numerals: 1. Mask body; 11. Outer layer; 12. Inner layer; 13. Oxygen supply port; 14. Carbon dioxide outlet; 15. Front throttle; 16. Rear throttle; 17. Guide port; 2. Seal; 3. Negative pressure device; 4. Drainage piece; 41. Respirator; 42. Lower diaphragm; 43. Memory sponge; 44. Upper diaphragm; 45. Drive structure; 46. Baffle; 47. Induction piece; 5. Intubation sleeve; 51. Elastomer; 52. Connecting plate. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0047] Reference Figure 1-Figure 12 As shown, Figure 1 AA in is the section line. Figure 2 For along Figure 1 The cross-sectional view formed by the section line AA; Figure 8 and Fig. 9 The arrows in the figure indicate the directions of gas scattering and reflection. Fig.11 The middle black area is the area where the induction element 47 is laid. Fig.11 The upper half shows the front side of the baffle plate 46, and the black area on the front side of the baffle plate 46 indicates that the sensing element 47 is arranged at the lower edge of the front side of the baffle plate 46; the lower half shows the back side of the baffle plate 46, and the black area on the back side of the baffle plate 46 indicates that the sensing element 47 is arranged on the entire back side of the baffle plate 46.

[0048] An adjustable endoscopic surgical mask, comprising:

[0049] The mask body 1 is a double-layer structure, comprising an outer layer 11 and an inner layer 12. The gap area formed by the outer layer 11 and the inner layer 12 is an oxygen flow area, wherein the oxygen in the oxygen flow area is used as a backup, and can provide a short period of oxygen when oxygen is no longer provided from the outside. The inner layer 12 is in close contact with the patient's face, and the gap area formed by the inner layer 12 and the user's face is an oxygen storage area. The outer layer 11 is provided with an inspection port penetrating the inner layer 12 and used to guide the insertion of an endoscope. A sealing member 2 for sealing is also provided between the endoscope and the outer layer 11 to ensure air tightness. A drainage member 4 is inserted into the inner cavity of the sealing member 2. The drainage member 4 penetrates the inner layer 12 and rests against the upper lip of the user to guide the exhaled gas into the inner cavity of the sealing member 2. The outer layer 11 is provided with an inspection port penetrating the inner layer 12 and used to guide the insertion of the endoscope. The outer layer 11 is provided with an oxygen supply port 13, and a pipeline is connected to the oxygen supply port 13, and the pipeline is connected to the oxygen supply port 13. A front throttle valve 15 for controlling the gas flow is provided on the interface of the gas cylinder and at the oxygen supply port 13, a carbon dioxide outlet 14 is provided on the sealing member 2, the sealing member 2 is connected to the negative pressure device 3 through a pipeline, and a rear throttle valve 16 for controlling the gas flow is installed at the carbon dioxide outlet 14; wherein the negative pressure device 3 comprises a gas storage tank for collecting carbon dioxide and a negative pressure pump provided at the upper end of the gas storage tank, the negative pressure pump provides a driving force for directional movement of the gas, and this driving force is also a driving force for directional flow of the gas in the oxygen storage area and the oxygen flow area. In the initial state, the front throttle valve 15 and the oxygen supply port 13 are arranged at 45 degrees, at which time the flow rate of the oxygen supply port 13 is half of the maximum flow rate of the oxygen supply port 13, and the rear throttle valve 16 and the carbon dioxide outlet 14 are arranged at 45 degrees, at which time the flow rate of the oxygen supply port 13 is half of the maximum flow rate of the oxygen supply port 13, that is, the amount of oxygen introduced into the oxygen storage area is the same as the amount of carbon dioxide flowing out of the oxygen storage area;

[0050] The drainage member 4 comprises a breathing tube 41, a lower diaphragm 42 and an upper diaphragm 44. The lower diaphragm 42 is against the user's water channel hole and fits with the skin. When the lower diaphragm 42 and the upper diaphragm 44 are installed, the upper diaphragm 44 is tightly against the lower diaphragm 42 and moves along the axial direction of the lower diaphragm 42, pushing the lower diaphragm 42 so that the lower diaphragm 42 is away from the nose tip, and pushing until the edge of the lower diaphragm 42 is flush with the user's nose tip. The upper diaphragm 44 and the lower diaphragm 42 are assembled into a combination whose inner cavity is consistent with the shape of the breathing tube 41. The semi-enclosed area of ​​the combination with the breathing tube 41 is an exhalation collection layer. The combination guides the carbon dioxide exhaled by the user to avoid the oxygen in the oxygen storage area being mixed with too much carbon dioxide and causing the oxygen concentration to decrease, and also to avoid the carbon dioxide gas entering the oxygen to form secondary pollution; the combination is on the surface of the breathing tube 41 The surface slides, and the inner wall of the upper diaphragm 44 is provided with a baffle 46 and a driving structure 45, the driving structure 45 is used to adjust the clamping angle between the baffle 46 and the upper diaphragm 44, the driving structure 45 includes a group of stepper motors and an ejector rod fixed to the end of the stepper motor output shaft, the front end of the ejector rod is provided with an integrally connected ball, the ball is engaged in the baffle 46, as the ejector rod is extended and retracted, the ball rotates inside the baffle 46, and at the same time, as the baffle 46 moves, the angle between the baffle 46 and the upper diaphragm 44 changes, the combination slides on the surface of the breathing tube 41, and the position of the upper diaphragm 44 and the lower diaphragm 42 is determined by the position of the breathing tube 41, and the inner wall of the upper diaphragm 44 is hoisted with a baffle 46 and fixed with a driving structure 45, the driving structure 45 is used to adjust the clamping angle between the baffle 46 and the upper diaphragm 44.

[0051] In one embodiment, a memory sponge 43 is integrally connected to one end of the lower diaphragm 42 away from the mask body 1. The memory sponge 43 is used to contact with the upper lip of the user and deform and seal so that the gas exhaled through the nasal cavity is introduced into the drainage member 4. The memory sponge 43 is an irregular body and is designed according to ergonomics to improve the comfort of the patient. The memory sponge 43 is easily deformed under pressure so that it can completely fit around the upper lip of the user, with a concave center at the front end and convex at both ends; the rear end is set as an inclined plate, which perfectly fits the bottom of the user's nasal cavity and deforms the memory sponge 43. The degree of memory sponge 43 is small, and the service life of memory sponge 43 is extended. Since memory sponge 43 is against the upper lip of the user, it is guaranteed that the exhaled gas of the user completely enters the inner cavity of the combination of lower diaphragm 42 and upper diaphragm 44. The rear end is arranged in an inclined plate to transition the obliquely introduced carbon dioxide gas, and under the drive of the negative pressure pump, the carbon dioxide gas is passively moved along a certain direction, and the inclined plate is roughened to enhance the scattering phenomenon of carbon dioxide gas, so that the beam gas is scattered in a misty state, which greatly reduces the energy contained in the introduced carbon dioxide gas and can be taken away under a smaller driving force.

[0052] In one embodiment, a cannula sleeve 5 coaxial with the inspection port is inserted at the center of the sealing member 2, and two connecting plates 52 are glued and connected on the surface of the cannula sleeve 5, and the two connecting plates 52 clamp the upper diaphragm 44 and the lower diaphragm 42. Under the clamping of the two connecting plates 52, the upper diaphragm 44 and the lower diaphragm 42 stabilize themselves by the friction with the connecting plates 52, and the upper diaphragm 44 and the lower diaphragm 42 can freely adjust their positions under the clamping of the two connecting plates 52; specifically, an elastic body 51 is provided at one end of the cannula sleeve 5 away from the mask body 1, and the user's teeth are close to the cannula sleeve 5. The elastic body 51 is deformed as the user's oral muscles squeeze, so as to keep the user's mouth open and prevent the end of the cannula sleeve 5 from damaging the oral mucosa, so as to protect the user's oral cavity. The upper diaphragm 44 and the lower diaphragm 42 are all slidably connected to the connecting plate 52, and the positions of the upper diaphragm 44 and the lower diaphragm 42 can be adjusted according to the structure and position of the user's nose, thereby expanding the scope of application.

[0053] In one embodiment, the upper diaphragm 44 and the lower diaphragm 42 are made of polypropylene material and have a cavity therein, the purpose of which is to prevent the upper diaphragm 44 and the lower diaphragm 42 from shifting again after adjustment under the action of gravity and to reduce the weight of the upper diaphragm 44 and the lower diaphragm 42.

[0054] Specifically, the oxygen supply port 13 is located on the outer layer 11 of the mask body 1, and the inner layer 12 is provided with a guide port 17 for introducing oxygen in the oxygen flow area into the oxygen storage area. The guide port 17 is located on the inner layer 12 near the cheek of the user, so that oxygen moves from the cheek to the nose wing and is inhaled by the nasal cavity. The carbon dioxide gas exhaled from the nasal cavity moves outward along the direction of the guide member 4, so that the flow path of oxygen and the flow path of carbon dioxide are in the same direction, avoiding the conflict between carbon dioxide and oxygen and reducing the oxygen concentration.

[0055] Among them, the oxygen supply port 13 is located on the mask body 1, and the oxygen supply port 13 is connected to the interface of the oxygen cylinder through a pipeline. The negative pressure pump configured in the negative pressure device 3 is used to provide a driving force for the directional movement of the gas to ensure that the flow of carbon dioxide and oxygen does not interfere with each other; the front throttle 15 and the rear throttle 16 have movement consistency, that is, the rear throttle 16 and the front throttle 15 operate synchronously, and the throttling angle of the rear throttle 16 is adjusted to change the oxygen passage diameter of the oxygen supply port 13, so that the channel through which oxygen flows becomes narrower or wider, and the angle of the rear throttle 16 is adjusted to achieve the change of the oxygen flow rate. The change in the diameter of the carbon dioxide outlet of the carbon outlet 14 makes the channel through which the carbon dioxide flows narrower or wider; among them, since the movements of the front throttle 15 and the rear throttle 16 are consistent, the diameters of the channels for oxygen entry and carbon dioxide exit are guaranteed to be consistent, that is, the flow rates through the front throttle 15 and the rear throttle 16 per unit time are the same, and the oxygen in the oxygen cylinder is driven by a negative pressure pump and then passively squeezed out. The exchange of equal amounts of oxygen and carbon dioxide ensures that the pressure in the oxygen storage area is always balanced, preventing the user's respiratory depression caused by a sudden drop or rise in pressure.

[0056] An adjustable endoscopic surgical mask also includes a microprocessing system, wherein the microprocessing system is equipped with a breathing sensing module, a data conversion module and a processing module;

[0057] The breathing sensing module is used to detect whether there is a temperature change caused by exhaled gas in the drainage member 4 and generate impedance data;

[0058] The data conversion module is used to obtain impedance data and generate an impedance curve image, and convert the impedance curve image information into a peak endpoint number, where the peak endpoint number represents the number of breaths in a unit breathing time;

[0059] The processing module is configured with historical data and a processing unit, and the processing unit is configured with a comparison threshold. The peak endpoint number output by the data conversion module is obtained, and the peak endpoint number is compared with the comparison threshold. If the peak endpoint number is greater than the comparison threshold, it indicates that breathing is suppressed, and an adjustment signal is generated. The front throttle 15 and the rear throttle 16 are adjusted based on the adjustment signal, and a refresh signal is generated. The peak endpoint number is re-obtained based on the refresh signal and compared with the comparison threshold. If the front throttle 15 and the oxygen supply port 13 are 90 degrees or the rear throttle 16 and the carbon dioxide outlet 14 are 90 degrees, the peak endpoint number is higher than the comparison threshold, and an alarm signal is generated, and the alarm device sounds;

[0060] If the number of peak endpoints is lower than the comparison threshold, an alarm signal is generated and the alarm goes off.

[0061] The historical data is impedance data formed by the respiratory sensing module based on the temperature change of the measured part before the user undergoes endoscopic surgery. The data conversion module receives the impedance data output by the respiratory sensing module, generates an impedance curve image, converts the impedance curve image information into a peak endpoint number, and the processing unit sets a comparison threshold value for the user's breathing being unsuppressed during the endoscopic surgery based on the peak endpoint number output by the data conversion module.

[0062] When the user's breathing is suppressed, the user breathes rapidly, and the breathing sensing module detects the temperature of the user's exhaled gas and generates impedance data based on it; the data conversion module obtains the impedance data of the breathing sensing module and generates an impedance curve image, which is converted into a peak endpoint number based on the impedance curve image information; the processing unit obtains the peak endpoint number of the data conversion module and compares it with the comparison threshold value, and generates an adjustment signal if it is higher than the comparison threshold value, and controls the front throttle valve 15 and the rear throttle valve 16 to adjust their angles at the same time based on the adjustment signal, and the adjustment angle is 15°, and generates a refresh signal;

[0063] The respiratory sensing module re-detects based on the refresh signal, the data conversion module generates an impedance curve image based on the newly generated impedance data of the respiratory sensing module, converts the impedance curve image information into a peak endpoint number, the processing unit obtains the peak endpoint number of the data conversion module, and compares it with the comparison threshold value, if it is higher than the comparison threshold value, generates an adjustment signal, and repeats the above operation;

[0064] Until the throttle valve 15 and the oxygen supply port 13 are set at 90 degrees before adjustment, if the peak endpoint number based on the respiratory rate measured per unit time is still higher than the set comparison threshold, the alarm will sound;

[0065] If the patient shows weak vital signs, the breathing sensing module detects whether there is a temperature change caused by exhaled gas in the drainage piece 4 and generates impedance data. The data conversion module obtains the impedance data and generates an impedance curve image, which is converted into a peak endpoint number based on the impedance curve image information. The processing unit obtains the peak endpoint number of the data conversion module and compares it with the comparison threshold. If it is lower than the comparison threshold, an alarm signal is generated and the alarm sounds.

[0066] In one embodiment, the breathing sensing module includes three groups of sensing elements 47, which are respectively laid on the lower diaphragm 42 near the memory sponge 43, on the lower edge of the front side of the baffle 46, and on the back side of the baffle 46. The sensing elements 47 are used to measure the impedance data of the measured part.

[0067] Exemplarily, the sensing element 47 for monitoring the change in the temperature of the oral and nasal wall caused by the patient's breathing is a sheet-type sensing sheet, and the sheet-type sensing sheet is used to detect the impedance data formed by the temperature change;

[0068] The sensing element 47 for monitoring the change in the temperature of the oral and nasal walls caused by the patient's breathing may also be a carbon dioxide concentration sensor, which is used to detect impedance data generated by the change in carbon dioxide concentration.

[0069] Among them, the chip-type sensor is taken as an example for detailed description:

[0070] The impedance data is obtained based on the number of breaths per unit time measured per unit time. The chip sensor produces a change in resistance value based on temperature changes. Fig.12 As shown, the data conversion module obtains the impedance data per unit time and generates an impedance curve image. The unit time is set to one minute, and the start time is the signal refresh time or the start time of the chip sensor detection. The impedance of the sensor chip in the mask at room temperature. The breathing curve in the figure is the impedance data change diagram of the sensor chip affected by the temperature of the exhaled gas in the nasal cavity per unit time. The curve formed by the change of the impedance of the sensor chip due to the temperature change. The horizontal axis t is the time point corresponding to the breathing curve. In the figure, t1, t2, t n The subscripts 1, 2...n are the number of times the sensor 47 senses the exhaled gas from the nasal cavity for the first, second...nth time in a unit time. The vertical axis B is the impedance data of the sensor 47 due to the influence of temperature. Since the user breathes in oxygen and exhales carbon dioxide, the impedance data in a unit time forms a regular continuous bulge. For the convenience of viewing, this image does not connect all the bulges into a line.

[0071] The data conversion module converts the impedance curve image information and converts each continuous bulge into a peak endpoint number, that is, each breath is a peak endpoint number, and the peak endpoint number per unit time represents the user's breathing times;

[0072] In this device, the peak endpoint number is converted into the user's breathing number. Due to individual differences, the peak breathing rate of each user is different. The breathing conditions of different users are measured based on the similarity of their breathing methods, and a comparison threshold is formed based on historical data to meet individual differences and make the measurement data more accurate.

[0073] In one embodiment, the processing module includes a breathing strategy, which is used to obtain impedance data measured by the sheet-type sensor sheet laid on the lower diaphragm 42, and the data conversion module generates an impedance curve image and a peak endpoint number based on the impedance data measured by the sheet-type sensor sheet on the lower diaphragm 42, and compares it with a comparison threshold to determine whether respiratory depression occurs;

[0074] The steps to determine whether respiratory depression occurs are as follows:

[0075] Obtaining impedance data measured by the sheet-type sensor sheet on the lower diaphragm 42;

[0076] Generate an impedance curve image based on impedance data conversion, and convert the impedance curve image information into peak endpoint numbers;

[0077] The peak endpoint number is compared with a comparison threshold value, and if the peak endpoint number is greater than the comparison threshold value, it indicates that first-level respiratory depression occurs, and a regulation signal is generated;

[0078] The peak endpoint number is compared with a comparison threshold. If the peak endpoint number is less than the comparison threshold, it indicates that breathing is suppressed, and it is determined that secondary respiratory suppression occurs, and an alarm signal is generated.

[0079] In one embodiment, the processing module further includes a plate adjustment strategy, which is used to determine whether breathing scattering occurs to adjust the angle of the baffle 46. The plate adjustment strategy specifically includes:

[0080] Identify whether impedance data appears on the baffle plate 46. If impedance data is detected on the back of the baffle plate 46, control the baffle plate 46 to swing toward the upper diaphragm 44 through the driving structure 45;

[0081] Specifically, when part of the carbon dioxide gas flowing out of the user's nasal cavity directly hits the inclined surface of the memory sponge 43, it is then scattered by the relatively rough inclined surface of the memory sponge 43, and part of it is scattered to the back side of the baffle 46, and is sensed by the sheet-type sensor on the back side of the baffle 46;

[0082] That is, the chip-type induction sheet on the back of the baffle plate 46 forms impedance data due to temperature change, and the processing unit receives the impedance data and generates an adjustment signal. Based on the adjustment signal, the driving structure 45 is controlled, the output shaft end of the stepper motor in the driving structure 45 retracts, and the ejector rod retracts inward toward the stepper motor, and the baffle plate 46 swings toward the upper diaphragm 44, and the angle between the baffle plate 46 and the upper diaphragm 44 decreases, and a refresh signal is generated;

[0083] If the refresh signal is still formed by the impedance data output detected by the chip-type sensor sheet on the back of the baffle 46, the processing unit generates an adjustment signal based on the refresh signal and repeats the above steps until the baffle 46 can no longer swing toward the upper diaphragm 44. At this time, the position of the lower diaphragm 42 can be manually adjusted so that the lower diaphragm 42 is close to the tip of the nose.

[0084] If impedance data is not detected on the back side of the baffle plate 46 , but impedance data is detected on the front side of the baffle plate 46 , the baffle plate 46 is controlled by the driving structure 45 to swing toward the lower diaphragm 42 .

[0085] When part of the carbon dioxide gas flowing out of the user's nasal cavity directly hits the inclined surface of the memory sponge 43, it is then scattered by the relatively rough inclined surface of the memory sponge 43, and part of it is scattered to the surface of the upper diaphragm 44, and continues to scatter and is sensed by the sheet-type sensor sheet on the front edge of the baffle 46;

[0086] If the chip sensor on the back side of the baffle 46 is not triggered, the chip sensor at the front edge of the baffle 46 forms impedance data due to temperature change, and the processing unit receives the impedance data and generates an adjustment signal. The drive structure 45 is controlled based on the adjustment signal. The output shaft end of the stepper motor in the drive structure 45 extends out, and the ejector rod moves away from the stepper motor. The baffle 46 swings toward the lower diaphragm 42, and the angle between the baffle 46 and the upper diaphragm 44 increases until the baffle 46 rotates to an angle of 90° with the upper diaphragm 44 and stops.

[0087] If the refresh signal is still formed by the impedance data output detected by the sheet-type sensor at the front edge of the baffle 46, the processing unit generates an adjustment signal based on the refresh signal and repeats the above steps until the baffle 46 can no longer swing toward the upper diaphragm 44. At this time, the position of the lower diaphragm 42 can be manually adjusted so that the lower diaphragm 42 is close to the tip of the nose.

[0088] The carbon dioxide gas scattered by the upper diaphragm 44 is scattered at least twice, once by the inclined surface of the memory foam 43, and the second time by the surface of the upper diaphragm 44. The energy contained in the carbon dioxide gas after the two scatterings is further weakened, and it can no longer flow back to the inlet of the exhalation collection layer, and is driven by the directionally moving gas. At this time, if part of the carbon dioxide gas spreads to the nose of the user, the directionally moving oxygen airflow will separate the nose from the spreading carbon dioxide, making it difficult for carbon dioxide to approach the nasal cavity. Secondly, the nasal inhalation direction is opposite to the carbon dioxide scattering direction, so as to ensure that the oxygen inhaled by the nasal cavity is relatively pure and difficult to be contaminated by carbon dioxide.

[0089] A baffle 46 is provided in the present device, through which the exhaled air collection layer is semi-closed, and the gas is deflected by the baffle 46 to separate oxygen and carbon dioxide, and the carbon dioxide gas is deflected, thereby increasing the number of scattering times of the carbon dioxide gas, weakening the energy of the carbon dioxide airflow, and reducing the range of carbon dioxide gas diffusion, so as to improve the quality of oxygen at the nasal inhalation point; secondly, according to the angle of the exhaled air of different users, the angle between the baffle 46 and the upper diaphragm 44 is adjusted to achieve multiple scattering of the carbon dioxide gas, so that the carbon dioxide is integrated into the directionally moving gas and is driven by the driving force of the directionally moving gas, thereby ensuring the one-way discharge of the exhaled air, effectively preventing the gas from flowing back into the mask, and reducing the risk of cross infection.

[0090] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be covered by the scope of the claims of the present invention.

Claims

1. An adjustable endoscopic surgical mask, characterized in that: include: A mask body (1) is provided with a sealing member (2) at the center thereof, and a guide member (4) is provided on the side of the sealing member (2) facing the inside of the mask body (1), wherein the guide member (4) abuts against the upper lip of the user and is used to guide exhaled gas into the inner cavity of the sealing member (2); The drainage member (4) comprises a breathing tube (41), a lower diaphragm (42) and an upper diaphragm (44); the lower diaphragm (42) is against the user's water groove hole; the upper diaphragm (44) is closely attached to the lower diaphragm (42) and moves along the axial direction of the lower diaphragm (42); the upper diaphragm (44) and the lower diaphragm (42) are assembled into a combination body whose inner cavity is consistent with the shape of the breathing tube (41); the semi-enclosed area of ​​the combination body and the breathing tube (41) is an exhalation collection layer, and the exhalation collection layer is used to guide out the carbon dioxide. Carbon; the assembly slides on the surface of the breathing tube (41), and the inner wall of the upper diaphragm (44) is provided with a baffle (46) and a driving structure (45), the driving structure (45) includes a set of stepper motors and an ejector rod fixed to the end of the stepper motor output shaft, the front end of the ejector rod is provided with an integrally connected ball, the ball is engaged in the baffle (46), the ejector rod is extended and retracted to change the position of the baffle (46), and then adjust the angle between the baffle (46) and the upper diaphragm (44).

2. The adjustable endoscopic surgical mask according to claim 1, characterized in that: The mask body (1) is a double-layer structure, comprising an outer layer (11) and an inner layer (12), wherein the outer layer (11) is provided with an inspection port penetrating the inner layer (12) and used to guide the insertion of an endoscope; the outer layer (11) is provided with an oxygen supply port (13), and a pipeline is connected to the oxygen supply port (13), and the pipeline is connected to the interface of the oxygen cylinder; the sealing member (2) is connected to the negative pressure device (3) through the pipeline to guide the exhaled gas to be discharged.

3. The adjustable endoscopic surgical mask according to claim 2, characterized in that: A memory sponge (43) is integrally connected to one end of the lower diaphragm (42) away from the mask body (1), and the memory sponge (43) is used to contact with the upper lip of the user and deform to seal, so that the gas exhaled through the nasal cavity is guided into the drainage piece (4).

4. The adjustable endoscopic surgical mask according to claim 3, characterized in that: A cannula sleeve (5) coaxial with the inspection port is inserted at the center of the sealing member (2), and two connecting plates (52) are glued to the surface of the cannula sleeve (5), and the two connecting plates (52) clamp the upper diaphragm (44) and the lower diaphragm (42).

5. The adjustable endoscopic surgical mask according to claim 4, characterized in that: The upper diaphragm (44) and the lower diaphragm (42) are made of polypropylene material and have cavities therein.

6. The adjustable endoscopic surgical mask according to claim 5, characterized in that: A front throttle valve (15) for controlling the gas flow is provided at the oxygen supply port (13), a carbon dioxide outlet (14) is provided on the sealing member (2), and a rear throttle valve (16) for controlling the gas flow is installed at the carbon dioxide outlet (14).

7. The adjustable endoscopic surgical mask according to claim 6, characterized in that: It also includes a microprocessing system, wherein the microprocessing system is equipped with a breathing sensing module, a data conversion module and a processing module; The breathing sensing module is used to detect whether a temperature change caused by exhaled gas occurs in the drainage member (4) and to generate impedance data; The data conversion module is used to obtain impedance data and generate an impedance curve image, and convert the impedance curve image information into a peak endpoint number, wherein the peak endpoint number represents the number of breaths within a unit breathing time; The processing module is provided with historical data and a processing unit, and the processing unit is provided with a comparison threshold. The peak endpoint number output by the data conversion module is obtained, and the peak endpoint number is compared with the comparison threshold. If the peak endpoint number is greater than the comparison threshold, it indicates that breathing is suppressed, and an adjustment signal is generated. Based on the adjustment signal, the adjustment angles of the front throttle (15) and the rear throttle (16) are controlled, and a refresh signal is generated. Based on the refresh signal, the peak endpoint number is re-obtained and compared with the comparison threshold. If the angle between the front throttle (15) and the oxygen supply port (13) is 90 degrees or the angle between the rear throttle (16) and the carbon dioxide outlet (14) is 90 degrees, the peak endpoint number is higher than the comparison threshold, and an alarm signal is generated, and the alarm device alarms; If the number of peak endpoints is lower than the comparison threshold, an alarm signal is generated and the alarm goes off.

8. The adjustable endoscopic surgical mask according to claim 7, characterized in that: The breathing sensing module comprises three groups of sensing elements (47), the three groups of sensing elements (47) being respectively laid on the lower diaphragm (42) near the memory sponge (43), on the lower edge of the front side of the baffle (46), and on the back side of the baffle (46), and the sensing elements (47) are used to measure the impedance data of the part to be measured.

9. The adjustable endoscopic surgical mask according to claim 8, characterized in that: The processing module includes a breathing strategy, the breathing strategy is used to obtain impedance data measured by the sensing element (47) laid on the lower diaphragm (42), and the data conversion module generates an impedance curve image and a peak endpoint number based on the impedance data measured by the sensing element (47) on the lower diaphragm (42), and compares them with a comparison threshold to determine whether respiratory depression occurs; The steps to determine whether respiratory depression occurs are as follows: Obtaining impedance data measured by the sensing element (47) on the lower diaphragm (42); Generate an impedance curve image based on impedance data conversion, and convert the impedance curve image information into peak endpoint numbers; The peak endpoint number is compared with a comparison threshold value, and if the peak endpoint number is greater than the comparison threshold value, it indicates that first-level respiratory depression occurs, and a regulation signal is generated; The peak endpoint number is compared with a comparison threshold. If the peak endpoint number is less than the comparison threshold, it indicates that breathing is suppressed, and it is determined that secondary respiratory suppression occurs, and an alarm signal is generated.

10. The adjustable endoscopic surgical mask according to claim 9, characterized in that: The processing module further comprises a plate adjustment strategy, wherein the plate adjustment strategy is used to determine whether breathing scattering occurs so as to adjust the angle of the baffle (46), and the plate adjustment strategy specifically comprises: Identifying whether impedance data appears on the baffle plate (46), and if impedance data is detected on the back of the baffle plate (46), controlling the baffle plate (46) to swing toward the upper diaphragm (44) through the driving structure (45); If impedance data is not detected on the back side of the baffle (46), but impedance data is detected on the front side of the baffle (46), the baffle (46) is controlled by the driving structure (45) to swing toward the lower diaphragm (42).

Images