Intelligent decompression noninvasive breathing mask and regulation and control method

Abstract

The invention discloses an intelligent decompression noninvasive breathing mask and a regulation and control method, the breathing mask comprises a mask body and an intelligent pressure sensing system, the intelligent pressure sensing system comprises at least one air ring group, and each air ring group comprises two air rings which can be alternately used; a percutaneous oxygen partial pressure sensor is arranged on the side face, making contact with the face skin, of each balloon and used for collecting oxygen partial pressure data at the face contact position. The inflating and deflating equipment is used for independently inflating and deflating each balloon; the control equipment is used for acquiring oxygen partial pressure data from the percutaneous oxygen partial pressure sensors distributed on the balloons in the pressurized state, and if it is determined that the pressure state needs to be switched on the basis of the acquired oxygen partial pressure data, the two balloons in each balloon group are subjected to inflation and deflation control through the inflation and deflation equipment, so that the pressure state of the balloons in each balloon group is switched. The two balloons in each balloon group are subjected to pressure state conversion between a pressurized state and a decompressed state, so that the pressure applying position is changed, and the pressure damage to the facial skin can be eliminated.

Description

Technical Field

[0001] The invention relates to medical equipment, and in particular to a breathing mask capable of avoiding compression damage to facial skin through intelligent decompression. Background Art

[0002] A breathing mask is a medical device. For example, a medical oxygen mask is connected to a ventilator connection pipe to deliver oxygen to the mask for the patient to inhale. When in use, in order to effectively increase the oxygen content in the patient's blood and improve the patient's hypoxia, the breathing mask needs to fit the patient's face tightly to ensure that the high-concentration oxygen is inhaled by the patient as much as possible and reduce oxygen leakage into the surrounding environment. However, there are at least the following problems:

[0003] 1. After patients wear respiratory masks for a long time, the area where the respiratory mask contacts the patient's face will become red or even suffer pressure damage. Once pressure damage occurs, the skin loses its natural defense barrier, and bacteria, viruses and other microorganisms can easily invade the wound, causing local infection or even systemic infection. Although some respiratory masks have improved the sense of facial oppression by adding cushioning materials or adjusting the mask structure, some patients still report pressure damage after wearing them for a long time. Obviously, these solutions do not fundamentally solve the problem of skin pressure damage.

[0004] 2. Existing respiratory masks have limited intelligence levels and are unable to detect the patient's skin pressure condition in real time. Therefore, they are unable to achieve accurate automatic adjustment functions based on the patient's skin pressure condition, that is, they are unable to completely avoid pressure injuries. Summary of the invention

[0005] The present invention provides an intelligent decompression non-invasive breathing mask and a control method, which solves the problem that when a patient wears the breathing mask, the breathing mask fits tightly against the patient's face, causing redness or even pressure damage to the patient's facial skin.

[0006] The present invention provides an intelligent decompression non-invasive breathing mask, the breathing mask comprising: a mask body, having a facial contact portion surrounding the face and fitting with the facial skin; characterized in that the breathing mask also comprises an intelligent pressure sensing system, the intelligent pressure sensing system comprising: at least one air ring group, arranged on the facial contact portion, each air ring group comprising two air rings that contact the facial skin at different positions and can switch the pressure state of the facial skin at the position, the pressure state comprising a pressurized state and a decompressed state; at least one transcutaneous oxygen partial pressure sensor is equipped for each air ring in each air ring group, distributed on the side of each air ring that contacts the facial skin, for obtaining each air ring by detecting the oxygen on the facial skin surface at each facial contact position. The invention relates to a device for controlling the oxygen partial pressure data of each face contact position; an inflation and deflation device for inflating or deflation each air ring in each air ring group through independent air paths; a control device for acquiring oxygen partial pressure data from transcutaneous oxygen partial pressure sensors distributed on the air rings in the pressurized state when one air ring in each air ring group is in the pressurized state and the other air ring is in the decompression state, and determining whether the two air rings in each air ring group need to switch the pressure state based on the acquired oxygen partial pressure data; if it is determined that the pressure state needs to be switched, the inflation and deflation of the two air rings in each air ring group are controlled by the inflation and deflation device, and the pressure state of the two air rings in each air ring group is switched between the pressurized state and the decompression state, thereby changing the pressure application position.

[0007] Preferably, the intelligent pressure sensing system comprises an air ring group, and two air rings of the air ring group are arranged in parallel on the face contact portion along the circumferential direction of the face contact portion and around the face.

[0008] Preferably, the intelligent pressure-sensing system comprises: a first air ring group corresponding to the bridge of the nose, wherein the two air rings of the first air ring group are arranged on the bridge of the nose fitting area of ​​the face contact part along the direction of the bridge of the nose fitting area; a second air ring group and a third air ring group corresponding to the cheeks respectively, wherein the two air rings of each air ring group are arranged on the cheek fitting area of ​​the face contact part along the direction of the cheek fitting area; and a fourth air ring group corresponding to the mandible, wherein the two air rings of the fourth air ring group are arranged on the mandible fitting area of ​​the face contact part along the direction of the mandible fitting area.

[0009] Preferably, the control device compares the oxygen partial pressure data obtained from the transcutaneous oxygen partial pressure sensor on the pressurized air ring in each air ring group with the preset oxygen partial pressure data, and if any of the obtained oxygen partial pressure data is less than the preset oxygen partial pressure data, it is determined that the pressure state of the two air rings in each air ring group needs to be switched.

[0010] Preferably, the control device controls the inflation and deflation device to inflate the air rings in the decompressed state in each air ring group and to deflate the air rings in the pressurized state in each air ring group, thereby switching the pressure states of the two air rings in each air ring group.

[0011] Preferably, the intelligent pressure sensing system further comprises: a pressure sensor provided for each air circle in each air circle group, arranged on the side of each air circle in contact with the facial skin, for collecting pressure data of each air circle on the facial skin.

[0012] Preferably, the control device is also used to control the inflation and deflation device to adjust the inflation amount of each air circle to adjust the pressure of each air circle on the facial skin according to the pressure data of each air circle in each air circle group on the facial skin and preset pressure data, so that the air bags in the pressurized state in each air bag group apply sufficient pressure to the face and the air bags in the decompressed state reduce or eliminate the pressure applied to the face.

[0013] Preferably, the breathing mask further comprises: a headband with a telescopic buckle, which is mounted on the outer peripheral edge of the mask body through a detachable structure, and is used to fix the mask body over the mouth and nose of the user.

[0014] The present invention also provides a control method for an intelligent decompression non-invasive breathing mask, characterized in that the control method for the intelligent decompression non-invasive breathing mask described in any one of claims 1 to 8 includes: while one air ring in each air ring group is in a pressurized state and the other air ring is in a decompression state, oxygen partial pressure data is obtained from transcutaneous oxygen partial pressure sensors distributed on the air rings in the pressurized state; based on the acquired oxygen partial pressure data, it is determined whether the two air rings in each air ring group need to switch the pressure state; if it is determined that the pressure state needs to be switched, the two air rings in each air ring group are inflated and deflated by the inflation and deflation device, so that the two air rings in each air ring group switch the pressure state between the pressurized state and the decompression state, thereby changing the pressure application position.

[0015] Preferably, it also includes: acquiring pressure data of each air circle on the facial skin from a pressure sensor arranged on the side of each air circle in each air circle group that contacts the facial skin; and controlling the inflation and deflation device to adjust the inflation amount of each air circle to adjust the pressure of each air circle on the facial skin according to the acquired pressure data and preset pressure data, so that the air bags in the pressurized state in each air bag group exert sufficient pressure on the face and the air bags in the decompressed state reduce or eliminate the pressure exerted on the face.

[0016] The present invention monitors the skin condition in real time through a transcutaneous oxygen partial pressure sensor. When it is detected that the skin in an airbag compression area in each airbag group is prone to damage, the controller controls the airbag to deflate and reduce pressure, and controls the other airbag to inflate and increase pressure. This is repeated through precise real-time skin monitoring and airbag pressure adjustment. Before the skin in an airbag compression area suffers pressure damage, the pressure on the skin in the area can always be timely relieved or even eliminated, giving the skin in the area rest time and promoting blood circulation. This realizes intelligent protection of the facial skin when wearing a breathing mask for a long time, and fundamentally eliminates the problem of facial skin pressure damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an intelligent decompression non-invasive breathing mask provided by the present invention;

[0018] Figure 2 It is a structural schematic diagram of another intelligent decompression non-invasive breathing mask provided by the present invention;

[0019] Figure 3 yes Figure 2 A first schematic diagram of the shapes and layout of two balloons in the balloon group at the middle cheek;

[0020] Figure 4 yes Figure 2 A second schematic diagram of the shapes and layout of two balloons in the balloon group at the middle cheek;

[0021] Figure 5 yes Figure 2 a third schematic diagram of the shapes and layout of two balloons in the balloon group at the middle cheek;

[0022] Figure 6a yes Figure 2 A cross-sectional view along the AA' direction;

[0023] Figure 6b yes Figure 2 Another cross-sectional view along the AA' direction;

[0024] Figure 7 is a schematic diagram of the headband structure;

[0025] Figure 8 It is a flow chart of the control method of the intelligent decompression non-invasive breathing mask provided by the present invention;

[0026] Fig. 9 It is a flow chart of the inflation and deflation control of the intelligent decompression non-invasive breathing mask provided by the present invention;

[0027] Explanation of reference numerals: 1-mask body; 2-ventilator connection pipe joint; 3-air ring interface; 5-outer air ring; 5a-outer air ring air passage; 5b-transcutaneous oxygen partial pressure sensor equipped for the outer air ring; 6-inner air ring; 6a-inner air ring air passage; 6b-transcutaneous oxygen partial pressure sensor equipped for the inner air ring; 7-headband; 41-first hook; 42-second hook; 43-third hook; 51-right cheek 51a-outer air ring at right cheek; 51b-transcutaneous oxygen partial pressure sensor for outer air ring at right cheek; 61-inner air ring at right cheek; 61a-air path for inner air ring at right cheek; 61b-transcutaneous oxygen partial pressure sensor for inner air ring at right cheek; 52-outer air ring at left cheek; 52a-outer air ring at left cheek; 52b-transcutaneous oxygen partial pressure sensor for outer air ring at left cheek Oxygen partial pressure sensor; 62-inner air ring at left cheek; 62a-air path of inner air ring at left cheek; 62b-transcutaneous oxygen partial pressure sensor equipped for inner air ring at left cheek; 53-outer air ring at bridge of nose; 53a-air path of outer air ring at bridge of nose; 53b-transcutaneous oxygen partial pressure sensor equipped for outer air ring at bridge of nose; 63-inner air ring at bridge of nose; 63a-air path of inner air ring at bridge of nose; 63b-inner air ring at bridge of nose The transcutaneous oxygen partial pressure sensor equipped with the air ring; 54 - outer air ring at the mandible; 54a - air path of the outer air ring at the mandible; 54b - transcutaneous oxygen partial pressure sensor equipped with the outer air ring at the mandible; 64 - inner air ring at the mandible; 64a - air path of the inner air ring at the mandible; 64b - transcutaneous oxygen partial pressure sensor equipped with the inner air ring at the mandible; 71, 72, 73 - buckles matching 41, 42, 43; 74 - telescopic buckle. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments described below are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] The present invention provides an intelligent decompression non-invasive breathing mask and a control method, which monitors the skin pressure in real time through a transcutaneous oxygen partial pressure sensor, and switches the inflation and deflation of two air rings at different positions based on the sensor's sensing results, thereby changing the pressure-bearing part and achieving a decompression effect, thereby avoiding continuous compression of the skin at the same position and eliminating the problem of skin damage.

[0030] Embodiment 1

[0031] This embodiment provides an intelligent pressure-reducing non-invasive breathing mask. Figure 1 and Figure 2 The breathing mask includes a mask body 1 and an intelligent pressure sensing system.

[0032] The mask body 1 has a face contact portion 11 that surrounds the face and fits the facial skin. The face contact portion 11 can be made of a soft and comfortable material such as silicone, rubber or thermoplastic elastomer, preferably silicone material, which is soft and has good sealing properties, can ensure good fit with the facial skin, and can reduce the pressure on the skin. In addition, the face contact portion 11 has a certain curvature and elasticity, which can better adapt to different face shapes and facial contours, ensure that it always maintains a close fit during use, and prevent gas leakage.

[0033] The intelligent pressure sensing system includes at least one air ring group, which is arranged on the facial contact part 11, and each air ring group includes two air rings that contact the facial skin at different positions and can switch the pressure state of the facial skin at the position, and the pressure state includes a pressurized state and a decompressed state. Figure 1 In the embodiment shown, the intelligent pressure sensing system includes an air ring group, which includes an outer air ring 5 and an inner air ring 6. The two air rings are arranged in parallel on the face contact part 11 along the surrounding direction of the face contact part 11 around the face. Considering that the areas where air leakage occurs and the areas where pressure damage occurs on the facial skin are concentrated on the bridge of the nose, the cheeks, and the mandible, Figure 2In the illustrated embodiment, the intelligent pressure sensing system includes four air ring groups corresponding to the four areas, wherein the first air ring group corresponding to the bridge of the nose includes an outer air ring 53 at the bridge of the nose and an inner air ring 63 at the bridge of the nose, and the two air rings of the first air ring group are arranged in parallel along the direction of the bridge of the nose fitting area of ​​the face contact part 11. The second air ring group corresponding to the left cheek includes an outer air ring 52 at the left cheek and an inner air ring 62 at the left cheek, and the two air rings of the second air ring group are arranged in parallel along the direction of the left cheek fitting area of ​​the face contact part 11. The third air ring group corresponding to the right cheek includes an outer air ring 51 at the right cheek and an inner air ring 61 at the right cheek, and the two air rings of the third air ring group are arranged in parallel along the direction of the right cheek fitting area of ​​the right cheek fitting area of ​​the face contact part 11. The fourth balloon group corresponding to the mandible includes an outer balloon 54 at the mandible and an inner balloon 64 at the mandible. The two balloons of the fourth balloon group are arranged in parallel along the direction of the mandible fitting area on the mandible fitting area of ​​the face contact part 11. The present invention adopts a balloon design in the face contact part 11, which can evenly distribute the pressure in the balloon contact area, reduce the sense of oppression on the face, and the soft touch of the balloon can also reduce the friction and oppression on the face due to long-term wearing, and reduce the incidence of pressure injuries. In addition, the balloon produces elastic deformation after inflation, which can fit the concave and convex parts of the face (such as the bridge of the nose, the cheeks, and the mandible) more closely, reduce the gap caused by the uneven face, and thus reduce the risk of air leakage. The effect is more obvious during intense breathing or head movement, and is suitable for all kinds of people who need to wear a breathing mask for a long time. Considering that the balloon material is too soft or insufficiently inflated, the balloon and the face may be unstable, and the balloon material is too hard and may lose the decompression effect, the balloon is preferably made of elastic materials such as medical grade silicone or latex.

[0034] exist Figure 2 In the embodiment of the four balloon groups shown, two balloons in each balloon group are long strip air bags arranged in parallel, but the shape and arrangement of the two balloons in each balloon group can be adjusted according to actual conditions, and the present invention is not limited to this. Taking the third balloon group at the right cheek as an example, Figure 3 The outer and inner air rings 51 and 61 are arranged in parallel with each other at the face contact portion 11 with a slight offset. Figure 4 The outer and inner air rings 51 and 61 are both U-shaped air bags, and the two are arranged crosswise. Figure 5 The outer and inner air rings 51 and 61 are both C-shaped air bags, and their arrangement is similar to Figure 4 The arrangement in is similar. Figures 2 to 5 In the embodiment, the shapes of the two balloons in each balloon group are the same. In fact, the shapes of the two balloons in each balloon group can also be different, and the invention does not limit this. For example, one balloon can be a closed airbag and the other balloon can be a long strip airbag, and the closed airbag is arranged around the long strip airbag.

[0035] The intelligent pressure sensing system also includes at least one transcutaneous oxygen partial pressure sensor equipped for each air ring in each air ring group, which is distributed on the side of each air ring that contacts the facial skin, and is used to obtain oxygen partial pressure data at each facial contact position by detecting oxygen on the facial skin surface at each facial contact position. Among them, transcutaneous oxygen partial pressure (TCPO2) is a method of measuring oxygen partial pressure through the skin surface. Transcutaneous oxygen partial pressure sensors provide a non-invasive way to evaluate the oxygenation status at the tissue level, especially to evaluate tissue hypoxia or insufficient perfusion. The normal value is 70-100 mmHg. The present invention uses a transcutaneous oxygen partial pressure sensor to collect oxygen partial pressure data of the skin at the contact position, and then evaluate the situation of skin hypoxia under pressure. Figure 1 In the embodiment of the balloon group shown in FIG. 1 , the transcutaneous oxygen partial pressure sensor 5 b provided for the outer balloon 5 can be evenly arranged on the side of the outer balloon 5 facing the facial skin, or can be arranged as shown in FIG. Figure 1 As shown, it is evenly distributed only in the four areas of the nose bridge, cheeks, and jaw where pressure injuries are prone to occur. The specific distribution data can be adjusted according to actual needs. Figure 2 In the embodiment of the four balloon groups shown, one or more transcutaneous oxygen partial pressure sensors are arranged on the side of each balloon facing the facial skin, for example, see Figure 2 The outer air ring 53 and the inner air ring 63 at the bridge of the nose are equipped with 5 transcutaneous oxygen partial pressure sensors 53b and 5 transcutaneous oxygen partial pressure sensors 63b respectively, the outer air ring 52 and the inner air ring 62 at the left cheek are equipped with 4 transcutaneous oxygen partial pressure sensors 52b and 4 transcutaneous oxygen partial pressure sensors 62b respectively, the outer air ring 51 and the inner air ring 61 at the right cheek are equipped with 4 transcutaneous oxygen partial pressure sensors 51b and 4 transcutaneous oxygen partial pressure sensors 61b respectively, and the outer air ring 54 and the inner air ring 64 at the mandible are equipped with 2 transcutaneous oxygen partial pressure sensors 54b and 2 transcutaneous oxygen partial pressure sensors 64b respectively.

[0036] In the present invention, when the two balloons of each balloon group are not pressurized, the sides of the facial contact portion 11, the two balloons of each balloon group, and the transcutaneous oxygen partial pressure sensor arranged on the balloons that are in contact with the facial skin should be basically in the same plane to ensure the comfort of the patient when using the breathing mask. To this end, on the one hand, a groove is provided at a suitable position on the side of each balloon facing the facial skin to fix and place the transcutaneous oxygen partial pressure sensor, for example, at the lower jaw, see Figure 6a and Figure 6b The transcutaneous oxygen partial pressure sensor 54b is fixedly placed in the groove of the outer air ring 54, and the transcutaneous oxygen partial pressure sensor 64b is fixedly placed in the groove of the inner air ring 64. The fixed placement method of the sensor and the air ring can adopt the existing method, which will not be repeated here. On the other hand, if the face contact part 11 has a certain thickness, a groove for fixing and placing the air ring is opened on the face contact part 11, see Figure 6aIf the thickness of the face contact portion 11 is insufficient, a through groove for fixing the air ring may be provided on the face contact portion 11, see Figure 6b The balloon and the face contact portion 11 can be fixedly arranged in an existing manner, which will not be described in detail here. Of course, the balloon and the face contact portion 11 can also be integrally formed by an existing integral molding method. It should be noted that Figure 1 The embodiment of a balloon group is only as follows Figure 6a The face contact portion 11 shown is implemented with a certain thickness.

[0037] In the present invention, after an air ring of each air ring group is inflated and pressurized, it produces elastic deformation, bulges outward toward one side of the facial skin, and presses the facial skin relatively evenly, which can not only reduce the sense of oppression on the face, but also fit the facial skin more closely and reduce the risk of air leakage, especially when the patient is moving or adjusting his posture.

[0038] The intelligent pressure sensing system also includes a control device and an inflation and deflation device.

[0039] The inflation and deflation device can inflate or deflate each air ring in each air ring group through independent air channels under the control of the control device, or can inflate or deflate each air ring in each air ring group through independent air channels under manual operation of the user. Figure 1 A balloon interface 3 is provided near the breathing machine connection pipe joint 2 of the mask body 1. The balloon interface 3 has an outer balloon vent connected to the outer balloon 5 through an outer balloon air passage 5a and an inner balloon vent connected to the inner balloon 6 through an inner balloon air passage 6a. Figure 3 A balloon interface 3 is provided near the ventilator connection pipe joint 2 of the mask body 1, and the balloon interface 3 has an outer balloon vent at the right cheek connected to the outer balloon 51 at the right cheek through the outer balloon air path channel 51a at the right cheek, an inner balloon vent at the right cheek connected to the inner balloon 61 at the right cheek through the inner balloon air path channel 61a at the right cheek, an outer balloon vent at the left cheek connected to the outer balloon 52 at the left cheek through the outer balloon air path channel 52a at the left cheek, and an inner balloon vent at the left cheek connected to the outer balloon 52 at the left cheek through the inner balloon air path channel 62a at the left cheek. The inner air ring vent at the left cheek connected to the inner air ring 62 at the left cheek, the outer air ring vent at the bridge of the nose connected to the outer air ring 53 at the bridge of the nose through the outer air ring air path channel 53a at the bridge of the nose, the inner air ring vent at the bridge of the nose connected to the inner air ring 63 at the bridge of the nose through the inner air ring air path channel 63a at the bridge of the nose, the outer air ring vent at the mandible connected to the outer air ring 54 at the mandible through the outer air ring air path channel 54a at the mandible, and the inner air ring vent at the mandible connected to the inner air ring 64 at the mandible through the inner air ring air path channel 64a at the mandible.

[0040] Furthermore, the inflation and deflation device in the present invention includes a miniature air pump and a solenoid valve. The air pump can be fixedly mounted on the side of the mask body 1 away from the facial skin, or can be independently arranged from the breathing mask. The solenoid valve can be arranged in the air ring interface 3. In one embodiment, only one solenoid valve can be used. Figure 1 The breathing mask in the present invention involves one air ring group two air rings, so the solenoid valve can adopt a one-control-two solenoid valve, that is, the control device controls the solenoid valve so that the air pump can control the air pump. Figure 1 The outer air ring 5 and the inner air ring 6 shown are used for inflation and deflation control. Figure 2 The breathing mask in the present invention involves four air rings and eight air rings. The solenoid valve can adopt a one-control-eight solenoid valve, that is, the control device controls the solenoid valve so that the air pump can Figure 2 The eight air rings corresponding to the four parts of the nose bridge, cheeks and jaw are shown to control the inflation and deflation of air. In another embodiment, each air ring corresponds to a solenoid valve. Figure 1 Two solenoid valves are required. Figure 2 Eight solenoid valves are required, and the control device controls the solenoid valves corresponding to each air ring so that the air pump can control the inflation and deflation of each air ring.

[0041] The control device can be fixedly mounted on a side of the mask body 1 away from the facial skin, or can be independently arranged from the breathing mask. A microprocessor can be selected to obtain oxygen partial pressure data from transcutaneous oxygen partial pressure sensors distributed on the pressurized air circles when one air circle in each air circle group is in a pressurized state and the other air circle is in a decompressed state, and determine whether the two air circles in each air circle group need to switch pressure states based on the obtained oxygen partial pressure data. Specifically, the control device compares the oxygen partial pressure data obtained from the transcutaneous oxygen partial pressure sensors on the pressurized air circles in each air circle group with the preset oxygen partial pressure data. If any of the obtained oxygen partial pressure data is If the oxygen partial pressure data is less than the preset oxygen partial pressure data, it indicates that the subcutaneous tissue is hypoxic, and it is determined that the pressure state of the two air rings in each air ring group needs to be switched. If it is determined that the pressure state needs to be switched, the two air rings in each air ring group are inflated and deflated by the air-inflating and deflation equipment, and the pressure state of the two air rings in each air ring group is switched between the pressurized state and the decompressed state. That is, the pressure state of the two air rings in each air ring group is switched by controlling the air-inflating and deflation equipment to inflate the air rings in the decompressed state in each air ring group and to deflate the air rings in the pressurized state in each air ring group, thereby adjusting the pressure distribution of the breathing mask and changing the pressure position. The preset oxygen partial pressure data can be selected in the range of 70-72 mmHg, such as 70 mmHg, 71 mmHg, and 72 mmHg.

[0042] At least one air circle group is provided on the face contact portion 11 of the present invention, and each air circle group has two air circles, for example, two inner and outer air circles (or called A circle and B circle). A pressure-sensitive element (or called a transcutaneous oxygen partial pressure sensor) capable of sensing the degree of hypoxia in subcutaneous tissue is provided on the side of the air circle that contacts the skin. The sensor senses the intensity of blood flow obstruction in the subcutaneous tissue of the face. When it senses that the hypoxia of the skin has reached a certain degree, it pneumatically alternates the A circle airbag and the B circle airbag, that is, changes the inflation and deflation of different airbags to change the position where the breathing mask applies pressure, thereby achieving a decompression effect. That is, based on the sensing result of the pressure-sensitive element, the small inner and outer circle airbags are inflated and deflated in different regions to control the decompression effect, thereby effectively avoiding pressure injuries.

[0043] Furthermore, the breathing mask may also include a headband, which is installed on the outer edge of the mask body 1 through a detachable structure, and is used to fix the mask body 1 over the user's head and nose, ensuring that the breathing mask can fit the patient's face evenly during use without falling off or shifting. The detachable structure can be Velcro, buckles and hooks, etc., which are easy to remove and replace the headband for timely cleaning and maintenance. Figure 1 and Figure 2 In the embodiment, the outer edges of the two cheeks of the mask body 1 are provided with a first hook 41 and a second hook 42, and the outer edge of the nose bridge of the mask body 1 is provided with a third hook 43, so that Figure 7 The three movable ends of the middle headband 7 should be provided with buckles 71, 72, 73 respectively matched with the buckle hooks 41, 42, 43.

[0044] The headband may also be provided with a telescopic buckle 74 for easy adjustment of the length of the headband, see Figure 7 A telescopic buckle 74 is respectively arranged at the position near the three movable ends of the headband 7, so that the length and tightness of the headband can be adjusted according to the patient's head shape and face size, ensuring that the respiratory mask can fit properly without being too tight, achieving the best wearing comfort and fixing effect.

[0045] Since the headband is in contact with the skin around the head and face, the width of the headband can be widened to disperse the pressure on the head and facial skin and reduce oppression on the head and face. At the same time, soft, skin-friendly materials with good breathability and comfort can be selected to reduce friction and restraint on the head and facial skin.

[0046] Furthermore, the respiratory mask may also include an adjustable nose bridge, which is arranged on the side surface of the nose bridge fitting area of ​​the mask body 1 away from the skin. By adjusting the nose bridge, it is ensured that the respiratory mask fits the patient's nose bridge, which can not only reduce the possibility of gas leakage from the nose bridge, but also make the patient feel comfortable when wearing it for a long time.

[0047] Embodiment 2

[0048] On the basis of the first embodiment, the intelligent pressure sensing system of the present invention further integrates a pressure sensor to monitor the pressure between the breathing mask and the face. Specifically, a pressure sensor is equipped for each air ring in each air ring group, which is arranged on the side of each air ring in contact with the facial skin, and is used to collect the pressure data of each air ring on the facial skin.

[0049] Correspondingly, the control device is also used to control the alarm to be issued or control the inflation and deflation device to automatically adjust the inflation and deflation when the pressure is too high based on the pressure data of each air ring in each air ring group on the facial skin and the preset pressure data. That is, the inflation and deflation device is controlled to adjust the inflation amount of each air ring to adjust the pressure applied by each air ring on the facial skin, so that the air rings in the pressurized state in each air bag group can apply sufficient pressure on the face and the air bags in the decompressed state can reduce or eliminate the pressure applied on the face, thereby avoiding over-inflation of the pressurized air rings or insufficient deflation of the decompression air rings.

[0050] In addition, based on the above solutions of Embodiment 1 and Embodiment 2, a display module may be further provided on a side of the mask body 1 away from the facial skin.

[0051] In one embodiment, the display module may be a more eye-catching indicator light, such as a red light, a blue light, etc. Figure 1 In the system, two indicator lights are set, each corresponding to a different air circle. Figure 2 In the invention, 8 indicator lights are provided, each corresponding to a different air ring in the 8 air rings in the 4 air ring groups. All indicator lights can be centrally provided on the mask body, or the indicator lights of each air ring can be provided nearby according to the corresponding relationship. If necessary, the corresponding air ring information can be printed next to each indicator light. When the control device determines that the oxygen partial pressure value of the facial skin in the air ring pressure area is lower than the preset oxygen partial pressure data (for example, 70 mmHg), the indicator light corresponding to the air ring is controlled to light up, which is helpful to quickly determine the facial skin position where the oxygen partial pressure is too low.

[0052] In another embodiment, the display module can also be a display screen. When the control device determines that the oxygen partial pressure value of the facial skin in an air ring pressure area is lower than the preset oxygen partial pressure data (for example, 70 mmHg), the air ring information is displayed on the display screen. For example, a unique number is printed for each air ring at the position corresponding to each air ring of the mask body 1, so that the display screen displays the number of the air ring, thereby quickly determining the facial skin position where the oxygen partial pressure is too low.

[0053] The display module can be used to timely understand the facial skin condition of the patient while wearing a respiratory mask, which is convenient for clinical observation.

[0054] In addition, a nasogastric feeding interface can be provided on the mask body 1 of the present invention. For patients who need a breathing mask to assist breathing and nasogastric feeding at the same time, a gastric tube can pass through the nasogastric feeding interface to facilitate nasogastric feeding for patients wearing breathing masks, thereby providing nutrition for patients who cannot eat independently.

[0055] Embodiment 1 and Embodiment 2 are applicable to all non-invasive breathing masks in the treatment of COPD-related respiratory failure and respiratory failure caused by various reasons, providing stable ventilation support for patients, and are also applicable to the treatment of sleep apnea syndrome to help patients improve their sleep quality. In addition, it can be applied to the emergency transportation process, and the decompression function of the breathing mask of the present invention can effectively reduce the facial pressure and discomfort of the patient during the transportation process. It can also be applied to patients who need long-term home oxygen therapy, and the comfort and ease of use of the breathing mask of the present invention can improve the quality of life of patients.

[0056] Embodiment 3

[0057] The present invention provides a control method for the intelligent decompression non-invasive breathing mask described in Embodiment 1 and Embodiment 2, see Figure 3 , the method comprising:

[0058] Step S101: While one of the air rings in each air ring group is in a pressurized state and the other air ring is in a decompressed state, oxygen partial pressure data is acquired from transcutaneous oxygen partial pressure sensors distributed on the air rings in the pressurized state.

[0059] The balloon is in a pressurized state when it expands after being inflated and exerts pressure on the facial skin it contacts. The balloon is in a decompressed state when it deflates and retracts to its original state where the pressure it contacts the skin is reduced or even disappears, i.e. Figure 6a and Figure 6b Status shown.

[0060] Step S102: Based on the acquired oxygen partial pressure data, determine whether the two air rings in each air ring group need to switch pressure states.

[0061] In the present invention, the oxygen partial pressure data obtained from the transcutaneous oxygen partial pressure sensor on the pressurized air rings in each air ring group is compared with the preset oxygen partial pressure data (e.g., 70 mmHg). If any of the obtained oxygen partial pressure data is less than the preset oxygen partial pressure data (e.g., 70 mmHg), it indicates that the subcutaneous tissue is hypoxic, and it is determined that the pressure state of the two air rings in each air ring group needs to be switched.

[0062] In addition, if the breathing mask is equipped with the aforementioned display module, the facial skin position where the oxygen partial pressure is low and the corresponding pressure air ring can be reminded through the display module.

[0063] Step S103: If it is determined that the pressure state needs to be switched, the two air rings in each air ring group are inflated and deflated by the air inflation and deflation equipment, so that the two air rings in each air ring group are switched between the pressurized state and the decompressed state, thereby changing the pressure position.

[0064] In the present invention, the air circle in the decompression state in each air circle group is inflated by controlling the inflation and deflation equipment, so that the air circle elastically expands toward the face, thereby applying pressure to the facial skin it contacts to reach a pressurized state, and then the other air circle in the pressurized state in each air circle group is deflated, so that the air circle elastically shrinks in the direction away from the face to the original state of decompression or even no pressure, that is, the decompression state. After the pressure states of the two air circles in each air circle group are converted, the pressure distribution of the breathing mask is adjusted and the pressure application position is changed.

[0065] For example, a patient wears the breathing mask of the present invention, connects the breathing circuit to supply oxygen, and the A circle of an air circle group is inflated, while the B circle is in its original state. The transcutaneous oxygen partial pressure sensor on the A circle works to collect the oxygen partial pressure. If the oxygen partial pressure is lower than the preset oxygen partial pressure (i.e., the normal value), it means that the skin in the compression area of ​​the A circle is prone to damage. The controller controls the air pump to inflate the B circle in the air circle group, and the A circle is deflated, thereby changing the pressure-applying part of the breathing mask. The transcutaneous oxygen partial pressure sensor on the B circle works to collect the oxygen partial pressure. If the oxygen partial pressure is lower than the preset oxygen partial pressure (i.e., the normal value), it means that the skin in the compression area of ​​the B circle is prone to damage. The controller controls the air pump to inflate the A circle in the air circle group, and the B circle is deflated, thereby changing the pressure-applying part of the breathing mask again. This is repeated, and the inflatable airbag is switched by interpreting the oxygen partial pressure, and the pressure distribution of the breathing mask is adjusted in real time to ensure that the skin pressure area changes dynamically and avoid pressure injuries.

[0066] In addition, the control method further comprises:

[0067] Step S201: Obtaining pressure data of each balloon on the facial skin from a pressure sensor arranged on the side of each balloon in each balloon group that contacts the facial skin.

[0068] Step S202: Based on the acquired pressure data and the preset pressure data, the inflation and deflation device is controlled to adjust the inflation amount of each air ring to adjust the pressure of each air ring on the facial skin, so that the air ring in the pressurized state in each air ring group applies sufficient pressure to the face and the air ring in the decompressed state reduces or eliminates the pressure applied to the face.

[0069] The present invention can ensure that the two air circles in each air circle group apply appropriate pressure to the facial skin. For the air circles in the pressurized state, appropriate pressure is applied to the skin, which can not only reduce the risk of air leakage caused by too low pressure and avoid the problem of accelerated skin tissue hypoxia caused by excessive pressure, but also improve the comfort and safety of the use of the breathing mask. For the air circles in the decompressed state, the pressure on the facial skin is minimized, which is conducive to the rapid recovery of hypoxic skin tissue and effectively prevents skin damage.

[0070] Although the present invention is described in detail above, the present invention is not limited thereto, and those skilled in the art can make various modifications based on the principles of the present invention. Therefore, all modifications made based on the principles of the present invention should be understood to fall within the protection scope of the present invention.

Claims

1. An intelligent decompression non-invasive breathing mask, characterized in that: The breathing mask comprises: A mask body having a face contact portion surrounding the face and fitting against the facial skin; Characterized in that the breathing mask also includes an intelligent pressure sensing system, and the intelligent pressure sensing system includes: At least one balloon group is arranged on the face contact part, each balloon group includes two balloons that contact the facial skin at different positions and can switch the pressure state of the facial skin at the position, and the pressure state includes a pressurized state and a decompressed state; At least one transcutaneous oxygen partial pressure sensor is provided for each air ring in each air ring group, and is distributed on the side of each air ring in contact with the facial skin, and is used to obtain oxygen partial pressure data at each facial contact position by detecting oxygen on the facial skin surface at each facial contact position; Inflation and deflation equipment, used to inflate or deflate each balloon in each balloon group through independent air passages; A control device is used to obtain oxygen partial pressure data from transcutaneous oxygen partial pressure sensors distributed on the air rings in the pressurized state when one air ring in each air ring group is in the pressurized state and the other air ring is in the decompression state, and determine whether the two air rings in each air ring group need to switch the pressure state based on the obtained oxygen partial pressure data; if it is determined that the pressure state needs to be switched, the two air rings in each air ring group are inflated and deflated by the inflation and deflation device, and the pressure state of the two air rings in each air ring group is switched between the pressurized state and the decompression state, thereby changing the pressure application position.

2. The breathing mask according to claim 1, characterized in that The intelligent pressure sensing system comprises an air ring group, wherein two air rings of the air ring group are arranged in parallel on the face contact part along the surrounding direction of the face contact part and surround the face.

3. The breathing mask according to claim 1, characterized in that The intelligent pressure sensing system comprises: A first balloon group corresponding to the bridge of the nose, wherein two balloons of the first balloon group are arranged on the bridge of the nose fitting area of ​​the face contact portion along the direction of the bridge of the nose fitting area; The second balloon group and the third balloon group respectively correspond to the two cheeks, and the two balloons of each balloon group are arranged on the cheek fitting area of ​​the face contact part along the direction of the cheek fitting area; Corresponding to the fourth balloon group of the mandible, the two balloons of the fourth balloon group are arranged on the mandible fitting area of ​​the facial contact part along the direction of the mandible fitting area.

4. The breathing mask according to claim 1, characterized in that The control device compares the oxygen partial pressure data obtained from the transcutaneous oxygen partial pressure sensor on the pressurized air ring in each air ring group with the preset oxygen partial pressure data, and if any of the obtained oxygen partial pressure data is less than the preset oxygen partial pressure data, it is determined that the pressure state of the two air rings in each air ring group needs to be switched.

5. The breathing mask according to claim 1, characterized in that The control device controls the inflation and deflation device to inflate the air rings in the decompression state in each air ring group and to deflate the air rings in the pressurization state in each air ring group, thereby switching the pressure states of the two air rings in each air ring group.

6. The breathing mask according to claim 1, characterized in that The intelligent pressure sensing system also includes: The pressure sensor equipped for each balloon in each balloon group is arranged on the side of each balloon in contact with the facial skin, and is used to collect pressure data of each balloon on the facial skin.

7. The breathing mask according to claim 6, characterized in that The control device is also used to control the inflation and deflation device to adjust the inflation amount of each air circle to adjust the pressure of each air circle on the facial skin according to the pressure data of each air circle in each air circle group on the facial skin and the preset pressure data, so that the air bags in the pressurized state in each air bag group exert sufficient pressure on the face and the air bags in the decompressed state reduce or eliminate the pressure exerted on the face.

8. The breathing mask according to any one of claims 1 to 6, characterized in that: The breathing mask also includes: A headband with a telescopic buckle is installed on the outer peripheral edge of the mask body through a detachable structure, and is used to fix the mask body to cover the user's mouth and nose.

9. A method for controlling an intelligent decompression non-invasive breathing mask, characterized in that: The control method of the intelligent decompression non-invasive breathing mask according to any one of claims 1 to 8 comprises: During a period in which one of the air rings in each air ring group is in a pressurized state and the other air ring is in a decompressed state, obtaining oxygen partial pressure data from transcutaneous oxygen partial pressure sensors distributed on the air rings in a pressurized state; Based on the acquired oxygen partial pressure data, determine whether the two air rings in each air ring group need to switch pressure states; If it is determined that the pressure state needs to be switched, the inflation and deflation device controls the inflation and deflation of the two air rings in each air ring group, so that the two air rings in each air ring group switch the pressure state between the pressurized state and the decompressed state, thereby changing the pressure position.

10. The control method according to claim 9, characterized in that: Also includes: Acquire pressure data of each balloon on the facial skin from a pressure sensor arranged on the side of each balloon in each balloon group that contacts the facial skin; According to the acquired pressure data and the preset pressure data, the inflation and deflation device is controlled to adjust the inflation amount of each air ring to adjust the pressure of each air ring on the facial skin, so that the airbags in the pressurized state in each airbag group exert sufficient pressure on the face and the airbags in the decompressed state reduce or eliminate the pressure exerted on the face.

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