Patient interface pad applied to CPAP field

Abstract

A patient interface pad for use in the field of CPAP and for delivering a breathable pressurized gas to a patient to treat sleep breathing disorders, comprising a rigid portion and an elastic portion, wherein the elastic part is divided into an elastic part main body and a connecting part, the elastic part main body is at least partially in contact with the face of a patient and forms sealing during use, the connecting part is connected with the rigid part, and the elastic part main body is provided with a plurality of areas, so that different areas of the patient interface pad have different change degrees; the patient interface pad is used for adjusting pressure generated by the patient interface pad on the face in different areas of the face, and specifically comprises an adjusting area used for being compatible with different patient face sizes, nose heights and widths, a supporting area used for supporting the patient interface pad and a stabilizing area used for preventing the patient interface pad from turning outwards at an opening facing the patient. Wherein the adjustment region may be provided with a nasal-side adjustment portion that makes the patient interface pad further compatible with the patient's nose.

Description

Technical Field

[0001] The utility model is a patient interface pad for CPAP, which is used to deliver breathable pressurized gas to a patient. The patient interface pad comprises a rigid part and an elastic part. The elastic part body has a plurality of regions so that different regions of the patient interface pad have different degrees of change, so as to adjust the pressure generated by the patient interface pad on the face in different regions of the face. The utility model is suitable for one or more of the diagnosis, treatment and improvement of respiratory diseases, and relates to a procedure for preventing respiratory diseases. Background Art

[0002] Sleep apnea syndrome (SAS), also known as sleep apnea-hypopnea syndrome, is a common syndrome in modern society. It can occur in everyone, regardless of age, gender, or race. It can affect almost anyone and is very common worldwide. According to data from the World Health Organization, as of 2022, more than one billion people in the world are troubled by sleep apnea syndrome, and the number is still on the rise, which may be related to the aging of the population and the increasingly unhealthy lifestyle of humans. Although sleep apnea syndrome is likely to occur in anyone, there are differences in the incidence rate between men and women and in different age groups. Generally, men are more likely to develop the disease than women and it is more common in people of middle age and above. Sleep apnea syndrome is currently divided into obstructive sleep apnea (OSA), central sleep apnea (CSA) caused by central nervous system disease, and mixed sleep apnea (MSAS) that combines the two symptoms. Obstructive sleep apnea is the most common type. Common symptoms of obstructive sleep apnea include loud and irregular snoring during sleep, intermittent short awakenings, dry mouth and sore throat due to airway obstruction, drowsiness and extreme sleep deprivation due to interrupted and poor sleep quality. The most common symptom is apnea during sleep that can last from a dozen seconds to several minutes. Obstructive sleep apnea can also cause many complications that disrupt people's lives. For example, patients with obstructive sleep apnea are very likely to suffer from cardiovascular diseases such as hypertension, arrhythmia, myocardial infarction and heart failure, and may also suffer from diabetes and lung diseases. Obstructive sleep apnea affects the lives of patients through its nocturnal symptoms and complications, covering many aspects such as health, economy, productivity, traffic safety, sleep and mental health. If obstructive sleep apnea occurs, patients should be treated or improved to reduce its impact on life or other aspects.

[0003] Moderate and severe obstructive sleep apnea patients are generally treated with ventilators, and an essential component is the patient interface pad. The patient interface pad is constructed to fit the patient's face. When in use, one end is connected to the airway or elbow, and the other end contacts the patient's face and seals to deliver the continuous positive pressure airflow used to maintain the patient's airway patency into the patient's nasal or oral airway. Due to the large demand for patient interface pads, the existing market already has patient interface pads of different styles and models, but the existing patient interface pads still need to be improved in all aspects, such as the pressure produced by the existing patient interface pads on the patient's face, the easy occurrence of indentations and red marks when wearing the patient interface pads for a long time, especially in the tightly fitting area, the inability to adapt to the facial contours and sizes of all patients, the inability to adapt to the height and width of the nose of all patients, and the inability to clean them. However, there is no patient interface pad in the existing market that can solve the above problems and provide patients with a better wearing result.

[0004] The utility model aims at the problems of the above-mentioned patient interface pad and designs a patient interface pad that solves the above-mentioned problems through continuous research and innovation, providing patients with a better patient interface pad. Compared with existing patient interface pads, it has more advantages in wearing comfort, sealing, adaptability and cleaning. It is a more competitive product in the existing patient interface pad market, which can help patients better accept CPAP treatment and ensure the continuity of treatment and patient compliance. Utility Model Content

[0005] The objective of the present invention is to provide a new type of patient interface pad, which provides patients with a more comfortable wearing experience, provides a higher guarantee for the effectiveness of sleep apnea treatment, and overcomes the limitations of similar products in the prior art, thereby providing a more effective and more widely used application scenario and space than the prior art, and delivers the pressurized gas output by the ventilator to the patient's airway in a more feasible manner to provide sleep apnea treatment.

[0006] A patient interface pad used in the CPAP field, for delivering breathable pressurized gas to a patient to treat sleep breathing disorders, the patient interface pad comprising:

[0007] a rigid portion having an inlet opening for receiving the breathable pressurized gas and configured to be connected to the elastic portion at one end;

[0008] The elastic part is integrally formed with the rigid part, and includes an elastic part body which at least partially contacts the patient's face and forms a seal when in use, and a connecting part which is connected to the rigid part;

[0009] The elastic part body has at least three different wall thicknesses, including at least:

[0010] an adjustment region having an opening proximate to the patient's face and an edge portion adjacent to the opening, wherein at least a portion of the edge portion adjacent to the opening has a wall thickness of no more than 0.6 mm;

[0011] a support region configured to be connected to the connecting portion of the elastic portion;

[0012] A stabilization region, adjacent to and connected to the support region, has a wall thickness that is thicker than at least a portion of the wall thickness of the support region.

[0013] In one embodiment, the supporting area has at least two wall thicknesses, and a portion close to the connecting portion has a thicker wall thickness to achieve a supporting effect.

[0014] In one embodiment, the regulation region surrounds the patient's nasal and oral airways when in use.

[0015] In one embodiment, the stabilization region is the area with the smallest proportion in the elastic portion of the patient interface pad.

[0016] In one embodiment, the various regions of the elastic portion body are smoothly connected without obvious dividing lines.

[0017] The utility model also discloses a patient interface pad applied to the CPAP field according to an embodiment of the present application, which is used to deliver breathable pressurized gas to a patient to treat sleep breathing disorders. The patient interface pad includes:

[0018] a rigid portion having an inlet opening for receiving the breathable pressurized gas and configured to be connected to the elastic portion at one end;

[0019] an elastic part having a single-layer wall and being integrally formed with the rigid part, comprising an elastic part body which at least partially contacts the patient's face and forms a seal when in use, and a connecting part which forms a connection with the rigid part;

[0020] The elastic part body comprises:

[0021] an adjustment region having an opening proximate to the patient's face and an edge portion adjacent to the opening;

[0022] a supporting region, configured to be connected to the connecting portion of the elastic portion, and having a wall thickness 2 to 9 times that of the adjusting region;

[0023] The stabilization area is adjacent to and connected to the support area, and its wall thickness is 3-10 times that of the adjustment area.

[0024] In one embodiment, the wall thickness of the adjustment area is at least 0.55 mm.

[0025] In one of the embodiments, the width of the edge portion of the adjustment area is at most 2 cm.

[0026] In one embodiment, each area of ​​the elastic portion body has a uniform wall thickness.

[0027] In one embodiment, the different regions of the elastic part body are changed in different wall thicknesses by a sudden change, and there are obvious dividing lines between the regions.

[0028] The utility model also discloses a patient interface pad applied to the CPAP field provided by an embodiment of the present application, which is used to deliver breathable pressurized gas to a patient to treat sleep apnea. The patient interface pad comprises:

[0029] a rigid portion having an inlet opening for receiving the breathable pressurized gas and configured to be connected to the elastic portion at one end;

[0030] The elastic part is integrally formed with the rigid part, and includes an elastic part body which at least partially contacts the patient's face and forms a seal when in use, and a connecting part which is connected to the rigid part;

[0031] The elastic part body has at least three different wall thicknesses and at least two surface treatment methods, including at least:

[0032] An adjustment area having an opening close to the patient's face and an edge portion adjacent to the opening, wherein at least a portion of the edge portion is polished;

[0033] a support region configured to be connected to the connecting portion of the elastic portion and having a thicker wall thickness adjacent to a top of the adjustment region than the adjustment region for preventing a patient's nose from bottoming out during use;

[0034] A stabilization region, adjacent to and connected to the support region, has a thicker wall thickness than the adjustment region.

[0035] In one embodiment, the support region has a gradually varying wall thickness adjacent to the top of the adjustment region, wherein the wall thickness is thicker near the connecting portion.

[0036] In one embodiment, the maximum width of the adjustment area on the top of the patient interface cushion for accommodating the nose does not exceed 5.5 cm.

[0037] In one of the embodiments, the portion of the adjustment area that contacts the patient's nose during use has an inward depression, configured to better accommodate the patient's nose and form a seal.

[0038] In one embodiment, the stabilization region is the area with the smallest proportion in the elastic portion of the patient interface pad.

[0039] The utility model also discloses a patient interface pad applied to the CPAP field according to an embodiment of the present application, which is used to deliver breathable pressurized gas to a patient to treat sleep apnea. The patient interface pad includes:

[0040] a rigid portion having an inlet opening for receiving the breathable pressurized gas and configured to be connected to the elastic portion at one end;

[0041] The elastic part is integrally formed with the rigid part, and includes an elastic part body which at least partially contacts the patient's face and forms a seal when in use, and a connecting part which is connected to the rigid part;

[0042] The elastic part body has at least three different wall thicknesses, including:

[0043] an adjustment region having an opening proximate to the patient's face and an edge portion adjacent to the opening;

[0044] a supporting region, configured to be connected to the connecting portion of the elastic portion and having a gradually varying wall thickness at a portion close to the connecting portion;

[0045] A stabilization region is adjacent to and connected to the support region.

[0046] In one of the embodiments, the adjustment region has a nose side adjustment portion near the edge portion, the wall thickness of which is between the edge portion and the support region.

[0047] In one of the embodiments, the width of the edge portion of the adjustment area is at most 2 cm.

[0048] In one embodiment, the stabilization region is the area with the smallest proportion in the elastic portion of the patient interface pad.

[0049] In one embodiment, the different regions of the elastic part body are changed in different wall thicknesses by a sudden change, and there are obvious dividing lines between the regions.

[0050] The utility model also discloses a patient interface pad applied to the CPAP field according to an embodiment of the present application, which is used to deliver breathable pressurized gas to a patient to treat sleep apnea. The patient interface pad includes:

[0051] a rigid portion having an inlet opening for receiving the breathable pressurized gas and configured to be connected to the elastic portion at one end;

[0052] an elastic part having a single-layer wall and being integrally formed with the rigid part, comprising an elastic part body which at least partially contacts the patient's face and forms a seal when in use, and a connecting part connected to the rigid part;

[0053] The elastic part body comprises:

[0054] An adjustment region having an opening close to the patient's face and an edge portion adjacent to the opening, and a nasal adjustment portion close to the edge portion and having a wall thickness between the edge portion and the support region, wherein at least a portion of the wall thickness of the adjustment region is at least 0.3 mm;

[0055] a support region configured to be connected to the connecting portion of the elastic portion;

[0056] A stabilization region is adjacent to and connected to the support region.

[0057] In one of the embodiments, the stabilization region has a thicker wall thickness than at least a portion of the adjustment region and the support region.

[0058] In one embodiment, the supporting area has at least two wall thicknesses, and a portion close to the connecting portion has a gradually changing wall thickness to achieve a supporting effect.

[0059] In one embodiment, the elastic portion has at least three different wall thicknesses.

[0060] In one embodiment, the different wall thicknesses are achieved by uniformly changing the regions of the elastic part body, and there is no obvious dividing line between the regions.

[0061] The patient interface pad of the present invention has at least the following beneficial effects:

[0062] 1) By testing the pressure value and sensitivity of different facial areas, combined with the sealing of the patient interface pad, the elastic part body is divided into different areas, and each area is given a certain function, providing patients with higher comfort and better user experience and improving patients' compliance with treatment. The utility model has learned through CPAP forums, reddit, Amazon's customer review area, YouTube and other platforms that most patient interface pads on the existing market have the problem of patients feeling uncomfortable or leaking during wearing. The reason for the patient's discomfort during wearing is not only related to the material of the patient interface pad itself, but also that the patient interface pad cannot completely fit the patient's face. Because the various areas of the human face have different curved outer contours, the patient interface pads on the existing market cannot be adjusted and changed according to the curved outer contours of the various areas of the face, so it cannot provide patients with satisfactory comfort and pressure. This is also the reason why the patient interface pads on the existing market are not sealed enough. The same pressure acts on the elastic part of the patient interface pad, and the elastic part is subjected to the pressure to produce the same degree of deformation to fit the face, but because the face has different outer contour curves, the same degree of deformation of the elastic part cannot be completely fitted with the patient's face, thereby causing leakage. In response to this discovery, the utility model conducted relevant experiments on the patient interface pad and the human face, as follows: ① Prepare the required equipment and materials, including: a human head model with standard size, patient interface pads of different types and sizes, pressure sensors (which can be silicon-based pressure sensors or flexible pressure sensors), pressure devices, computers or data acquisition and analysis systems. ② Fit the pressure sensors as densely as possible to various areas of the head model's face (or wear them on the head model's face), fix patient interface pads of different types or sizes to the head model's face, use a standard pressure device (pressure fixture or other equipment) to apply the same pressure to the patient interface pad and record the data of the pressure sensors in various areas of the face, and repeat the test and data recording. ③ Analyze and calculate the average value of the pressure size of the head model in various areas of the face to adjust the size and wall thickness of the patient interface pad in various areas of the face, and solve the problem of poor sealing due to different fit of the patient interface pad in various areas of the face and poor comfort due to uneven pressure distribution. Through data analysis and conclusion, the wall thickness of the elastic part of the patient interface pad corresponding to the area with the largest average pressure on the head model's face is reduced, so that the patient's facial area can fit the corresponding position of the patient interface pad more comfortably. At the same time, the wall thickness of the elastic part of the patient interface pad corresponding to the area with the smaller average pressure on the head model's face is designed to be of appropriate thickness, providing patients with a better use experience while reinforcing the patient interface pad to prevent air leakage. During the experiment, it was also found that the existing patient interface pads on the market have a part that is more easily blown over, so this area is thickened to form a thicker area to prevent it from turning over and leaking.In summary, the present invention draws conclusions based on precise experimental data, and designs the elastic part of the patient interface pad that has the greatest contact with the patient's face to be divided into at least three areas, namely, an adjustment area, a stabilization area, and a support area. The adjustment area is configured to increase compatibility with the patient's face and nose, the stabilization area is a thickened area to prevent the elastic part from everting, and the support area is used to support the patient interface pad. In order to ensure the supporting effect of the elastic part of the patient interface pad, the present invention sets the support area to at least two different thicknesses, and the wall thickness of the partial support area close to the connection part is thicker, and the wall thickness of this area can be variable. When in use, the wall thickness of the partial support area close to the patient's face is thinner.

[0063] 2) A thinner edge portion is provided in the adjustment area to increase compatibility with the patient's face, so that the elastic portion of the patient interface pad fits the patient's face better and improves sealing. Based on the above experiments, the present invention has noticed that the elastic portion of the patient interface pad on the existing market has a great influence on the overall sealing and comfort of the entire patient interface pad near the edge portion of the opening toward the patient's face. Therefore, the present invention has redesigned this portion to improve the comfort and sealing of the patient interface pad while making it more suitable for most patients. a) In the comments of some Amazon buyers and customer reviews on other platforms, the present invention has found that although the patient interface pads on the existing market are provided with different sizes of S\M\L, due to differences in race and weight, some patients still cannot find a patient interface pad that fits their face size. There is a situation where the use of size L will cause air leakage and the use of size M will cause obvious squeezing, which causes discomfort. Therefore, the present invention is compatible with more face shapes by thinning the elastic part of the main body of the patient interface pad near the edge portion opening toward the patient's face. The thin edge portion is convenient for folding inwards, so that patients with smaller faces can directly use the inner edge as the edge for fitting and sealing under the action of pressurized gas, while patients with larger faces can press down the edge portion of the patient interface pad and actually use the edge of the support portion near the edge portion for fitting and sealing. The present invention changes the type of face size that the patient interface pad is compatible with from a certain value to a certain range, making it easier for patients who cannot find a suitable size within each brand to choose, thereby expanding the compatibility of the patient interface pad. b) In addition to the advantage of increasing compatibility, the present invention designs the edge portion to be thinner, which also has the advantage of making the patient interface pad more sealed. The edge portion is designed to be a thin area with uniform thickness, so that the edge portion is better blown up by the airflow during use, and is more likely to contact with the patient's face to form a seal, making the seal more stable, and the thinner edge portion has greater flexibility, which can better adapt to the different outer contours of the face. Uniform thickness means that the contact surface of the inner edge of the patient interface pad applies a more even force to the patient's face, without too many pressure points or discomfort, thereby providing more uniform comfort. At the same time, uniform thickness can also be applicable to more facial contour shapes and fit a wider range of people. c) The utility model uses a special surface treatment process and polishes the edge portion. The polished surface is smoother than other surfaces and has greater adhesion to the skin during use, thereby providing a better and more stable fit. In addition, the polished surface is more uniform and has no concave or protruding surface, which helps to increase the sealing between the elastic part of the patient interface pad and the patient's face and reduce air leakage. However, in order to ensure the comfort of the patient interface pad, the patient interface pad is also provided with a relatively rough frosted surface. The relatively rough surface has less adhesion to the skin during use, thereby improving the comfort of the patient when wearing the patient interface pad.The utility model uses a method combining two surface treatment modes, which can ensure better sealing performance and enable the patient interface pad to maintain its original comfort.

[0064] 3) Design an easily adjustable area close to the nasal airway to improve the accommodation of the patient's nose and prevent it from hitting the bottom. One of the biggest differences between different people's faces is reflected in the height and width of the nose. Some people have higher nose bridges while others have lower nose bridges. Some people have narrower noses while others have wider noses. This difference leads to a variety of noses of different heights and widths being adapted to the patient interface pad. The design of the area where the elastic part fits the patient's nose wings will directly affect the fit and sealing effect between the patient interface pad and the patient's face, which is an extremely important link. The patient interface pad shown in the utility model is designed with at least two different wall thicknesses in the area where the elastic part fits the patient's nose wings and nose sides, so as to provide a greater degree of accommodation for the nose when in use, and can adapt to a variety of different nose heights and widths, further increasing the compatibility of the patient interface pad with the patient's face to provide the best treatment effect. Specifically, a) when a patient uses the patient interface pad shown in the utility model, the area where the elastic part of the main body contacts the patient's nose with the largest contact is the adjustment area with a thinner wall thickness. Because of its thinner wall thickness, it can fit the patient's nose more easily. When the adjustment area is subjected to pressure from the patient's nose, it can also easily obtain a corresponding deformation size according to the height of the nose. In addition, the greater softness brought by its thinner wall thickness makes the pressure on the patient's nose smaller, and the comfort of use is improved. b) The support area has a thicker wall thickness than the adjustment area at the top of the adjacent adjustment area, and is configured to prevent excessive pressure from the patient's nose from causing the elastic part to directly touch the bottom during use, provide greater support for the patient's nose, and reduce the discomfort caused by the patient interface pad. c) The adjustment area also has a nose side adjustment part near the patient's nose, in order to solve the problem that patients with noses of different widths are not compatible with some patient interface pads, and improve the compatibility of the patient interface pad with the patient's nose. For patients with narrow noses, under the action of pressurized gas, the boundary of the thinner area is directly used as the outer contour of the elastic part of the patient interface pad to accommodate the nose. For patients with wider noses, the nasal side adjustment part can be pressed down, and part of the nasal side adjustment part or the boundary of the nasal side adjustment part can be directly used as the outer contour of the elastic part of the patient interface pad to accommodate the nose. This can adapt to the faces of patients with different nose widths, ensure the best fit between the patient interface pad and the patient's face, and help meet the needs of different patients.

[0065] 4) Compared with the patient interface pads with laces and double layers, the utility model has a simple mold and a low defect rate on the basis of maintaining the original function, which reduces the production cost while protecting the environment and is easy to clean. Most patient interface pads on the existing market are designed as double-layer structures or with laces to ensure that the elastic part does not turn outward. Although these two methods solve the problem of the elastic part turning outward, they also bring many new problems. For example, the design of the double-layer patient interface pad makes it heavier than the single-layer patient interface pad, which easily causes discomfort to the patient, especially when the patient is in a long-term wearing state. Both the double-layer patient interface pad and the patient interface pad with laces are more expensive in material cost, and both require more complex molds, which increases the mold cost and the process used is also more complicated. In addition, due to the complexity of the process of the double-layer patient interface pad and the patient interface pad with laces, the probability of defective products in the manufacturing process increases, and the increase in the defect rate further increases the manufacturing cost. It may also waste a certain amount of manpower costs due to quality control and screening. The patient interface pad shown in the utility model uses the stable area of ​​the elastic part body to replace the structure of the double-layer patient interface pad or the patient interface pad with laces to make it have the same function, simpler process, low cost, and higher yield rate. It shows more advantageous features than the existing patient interface pad in all aspects, meets the requirements of green design, and has a beneficial effect on climate change and environmental protection. In terms of cleaning, since the double-layer patient interface pad or the patient interface pad with laces is composed of multiple layers of materials, there may be corners that are easy to accumulate dirt and difficult to clean during cleaning, which may easily cause the growth of bacteria and other microorganisms for a long time, which has an adverse effect on the health of the patient. The cleaning process will take more time and may require more frequent cleaning times to clean it. In addition, during the use of a ventilator to treat obstructive apnea, the patient interface pad itself is prone to moisture accumulation, and the barrier of the multiple layers of materials makes it difficult to volatilize, and it takes a longer time to dry, which is not conducive to the patient's repeated and long-term use. This is also a factor that is not conducive to the patient's health. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 It is a three-dimensional schematic diagram of a patient interface pad in Embodiment 1 of the present utility model;

[0067] Figure 2 It is a front view showing various regions of a patient interface pad in the first embodiment of the present utility model;

[0068] Figure 3 It is a side view showing various regions of a patient interface pad in Embodiment 1 of the present invention;

[0069] Figure 4 It is a cross-sectional schematic diagram of a patient interface pad in Embodiment 1 of the present utility model;

[0070] Figure 5 for Figure 4 AA section structure schematic diagram in;

[0071] Figure 6 for Figure 4 Schematic diagram of the BB cross-section structure;

[0072] Figure 7 for Figure 4 Schematic diagram of CC cross-section structure in;

[0073] Figure 8 This is a schematic diagram of an experiment of a patient interface pad in Embodiment 1 of the present utility model;

[0074] Fig. 9 This is a diagram showing the experimental force of a patient interface pad in Embodiment 1 of the present utility model;

[0075] Fig.10 This is a diagram showing the changes in the edge portion of the patient interface pad when patients with different face sizes use the patient interface pad in the first embodiment of the present invention;

[0076] Fig.11 This is a schematic diagram of polishing the edge of the patient interface pad in the first embodiment of the present invention;

[0077] Fig.12 This is a diagram showing changes in the adjustment area when patients with different nose heights and widths use the patient interface pad in the first embodiment of the present invention;

[0078] Fig.13 It is a schematic diagram of the patient interface pad in the first embodiment of the present invention to prevent the nose from touching the bottom;

[0079] Fig.14 This is a schematic diagram of a patient interface pad with different area divisions in another implementation manner of Example 1 of the utility model;

[0080] Fig.15 A schematic diagram of another implementation of the first embodiment of the present invention in which the elastic part and the rigid part of the patient interface pad are separated and connected using a physical clip;

[0081] Fig.16 This is a schematic diagram of another implementation of the patient interface pad of Example 1 of the present utility model, which has an exhaust port or a noise reduction component;

[0082] Fig.17 This is a schematic diagram of a patient interface pad with a comfort layer in another implementation manner of Example 1 of the utility model;

[0083] Fig.18This is a schematic diagram of the elastic part of the utility model in the second embodiment of the utility model being used on another form of patient interface pad;

[0084] Fig.19 This is a schematic diagram of another implementation of Example 2 of the present invention, in which the elastic portion of the present invention is used on other forms of patient interface pads;

[0085] Fig. 20 It is a schematic diagram showing that the stabilization area of ​​the patient interface pad in the third embodiment of the present invention has different forms;

[0086] Fig.21 This is a schematic diagram of another implementation of the third embodiment of the present invention, in which the adjustment area of ​​the patient interface pad has different forms;

[0087] Fig. 22 This is a schematic diagram of another implementation of Example 3 of the present invention, in which the support area of ​​the patient interface pad has a different form. DETAILED DESCRIPTION

[0088] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Typical embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0089] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the utility model. The terms used in the utility model specification herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0090] The utility model provides a patient interface pad with a simpler structure and better patient comfort wearing experience in response to the problems that the existing patient interface pads on the market for transmitting gas to the patient's airway have insufficient sealing and comfort, are difficult to produce and have too high costs. The patient interface pad designed by the utility model not only optimizes the existing design, but also provides several patient interface pads with different structures for patients to choose according to their respective needs and preferences. It is a better technical utility model for users, producers and the market. The utility model reduces material waste and is also a sustainable environmentally friendly design for the environment.

[0091] Several structures of the patient interface pad of the present invention are described below in conjunction with specific examples.

[0092] Example 1

[0093] This embodiment provides a patient interface pad 1 for use in the CPAP field. This embodiment provides a three-dimensional schematic diagram of the patient interface pad 1, a display diagram of each area, a cross-sectional structure schematic diagram, an experimental display and a force diagram, and a display diagram of the use effect. Figure 1-13 The patient interface pad 1 shown in the embodiment includes a rigid part 2 and an elastic part 3, wherein the elastic part 3 has a connecting part 311 connected to the rigid part 2 and an elastic part body 31, wherein the elastic part body 31 includes at least an adjustment area 312, a support area 313, and a stabilization area 314, each area having a different corresponding function, and is configured to improve the wearing comfort of the patient, enhance the sealing performance of the patient interface pad 1, and enhance the compatibility with the patient's face.

[0094] The patient interface pad 1 includes a rigid part 2, having an air inlet opening 21 for receiving breathable pressurized gas and arranged to be connected to an elastic part 3 at one end, wherein the air inlet opening 21 can be an opening formed by a wall extending toward the patient's face or away from the patient's face, and when in use, is constructed to be connected to a conduit, frame or elbow for conveying breathable pressurized gas by means of snaps, clips, magnetic attraction, etc. The rigid part 2 provides the patient interface pad 1 with the required structural stability, ensuring that the shape of the patient interface pad 1 can remain unchanged during wearing, thereby maintaining the main function of the patient interface pad 1. Its material can be high-density polyethylene (HDPE), polypropylene (PP), polycarbonate (PC), polystyrene (PS), etc.

[0095] The elastic part 3 is integrally formed with the rigid part 2, and includes an elastic part body 31 that at least partially contacts the patient's face and forms a seal when in use, and a connecting part 311 that forms a connection with the rigid part 2. The elastic part 3 is made of a material softer than the rigid part 2, such as silicone, rubber, elastic plastic, etc., and is constructed so that when in use, the connecting part 311 is connected to the rigid part 2 by means of a flexible clip, glue, magnetic attraction, co-molding, etc. When in use, at least part of the elastic part body 31 contacts the patient's face to disperse the pressure of the patient interface pad 1 on the patient's face. By designing the elastic part body 31 to improve its performance, the comfort, compatibility and sealing of the patient interface pad 1 are improved, ensuring that the patient has a better experience during the treatment process, reducing discomfort, thereby improving treatment compliance and enhancing the effect of treatment. The elastic part main body 31 is designed to be a single-layer wall, which achieves the same effect as a double-layer wall. It is convenient for the patient to clean the patient interface pad 1 and reduces the weight of the patient interface pad 1, avoiding discomfort for the patient when wearing it for a long time. It also saves material and mold costs, simplifies the process, reduces the defective rate, and has the advantages of being easy to dry and clean and not easy to breed bacteria. By conducting experimental tests on patient interface pads 1 of different types and sizes (by placing a pressure sensor on the face of a human head model with standard size, applying the same pressure to the patient interface pad 1 and recording the data of the pressure sensors in each area of ​​the face, repeating the test and data analysis and obtaining the average value of the pressure size of the head model in each area of ​​the face), it is concluded that the elastic area requires at least three different wall thicknesses, wherein each area of ​​the elastic part body 31 has a uniform wall thickness, or may have a non-uniform wall thickness such as a gradual wall thickness, and the elastic area body of the patient interface pad 1 is divided into at least three areas, and the elastic part 3 adopts a uniform change method to achieve different wall thickness changes between the areas, and there is no obvious dividing line between the areas (no steps, and the change in wall thickness between the areas cannot be seen by the naked eye), or the elastic part 3 adopts a sudden change method to achieve different wall thickness changes between the areas, and there is a clear dividing line between the areas. The elastic part body 31 can also have at least two surface treatment methods.

[0096] The elastic part body 31 has at least three different wall thicknesses, at least including an adjustment area 312, having an opening close to the patient's face and an edge portion 3121 adjacent to the opening, surrounding the patient's nasal and oral airways when in use, and configured to be adjustable according to different patient face sizes and nose heights and widths, and the maximum width of the adjustment area at the top of the patient interface pad for accommodating the nose does not exceed 5.5 cm (including the edge portion at the top and the nose side adjustment portion). The portion that is adjusted according to different patient face sizes is the edge portion 3121, which has a thinner thickness, so that the edge portion 3121 can be easily folded inward to adapt to faces of different sizes. Specifically, when in use, for patients with smaller faces, the edge portion 3121 can be blown up by the pressurized gas, and the inner edge can be directly used as the edge for fitting and sealing; while for patients with larger faces, the edge portion 3121 of the patient interface pad 1 can be pressed down, and the edge of the support portion close to the edge portion 3121 can be actually used for fitting and sealing, wherein the wall thickness of at least part of the edge portion 3121 adjacent to the opening does not exceed 0.6 mm, and the wall thickness of at least part of the adjustment area 312 is at least 0.3 mm. The edge portion 3121 is designed as a thinner area in order to achieve better sealing, so that the edge portion 3121 can be more easily blown up by the airflow when in use, so that the sealing formed by the edge portion 3121 contacting the patient's face is better and more stable. In consideration of sealing and comfort, the width of the edge portion 3121 of the adjustment area 312 is optimally set to be at most 2 cm. In addition, the edge portion 3121 also has a uniform thickness, making the patient interface pad 1 more comfortable, and the uniform inner edge makes the contact surface between the patient interface pad 1 and the patient's face more even, without too many pressure points, thereby providing better comfort. The edge portion 3121 also has a special surface treatment, specifically, at least part of the surface treatment method of the edge portion 3121 is polishing. The polished surface is smoother than other surfaces, and has greater adhesion to the skin when used, thereby better and more stable fit. However, in order to ensure the comfort of the patient interface pad 1, the patient interface pad 1 is also provided with a relatively rough frosted surface. The utility model uses a method of combining two surface treatment methods, which can not only ensure its better sealing but also enable the patient interface pad 1 to maintain its original comfort.The part that is adjusted according to the height and width of the patient's nose is the adjustment area 312 located at the top of the patient interface pad 1, including the nose side adjustment part 3122. The adjustment area 312 has at least two thicknesses to provide a greater degree of accommodation for the nose when in use. Specifically, the adjustment area 312 has a nose side adjustment part 3122 close to the edge part 3121 and with a wall thickness between the edge part 3121 and the support area 313. In the adjustment area 312 at the top of the patient interface pad 1, the nose side adjustment part 3122 has a thicker wall thickness, and the rest of the wall thickness is thinner. When in use, the nose For patients with narrow noses, the edge portion 3121 and the nasal side adjustment portion 3122 are directly blown up under the action of pressurized gas, and the thinner wall thickness boundary is used as the edge of the patient interface pad 1 elastic portion 3 to seal the nose; while for patients with wider noses, the nasal side adjustment portion 3122 can be pressed down, and part of the nasal side adjustment portion 3122 or the boundary of the nasal side adjustment portion 3122 can be used as the edge of the patient interface pad 1 elastic portion 3 to seal the nose, thereby adapting to the faces of patients with different nose widths. This method ensures the best fit between the patient interface pad 1 and the patient's face, which helps to meet the needs of different patients. The nasal side adjustment portion 3122 can have a uniform wall thickness or a gradually changing wall thickness. In addition, the portion of the adjustment area 312 that contacts the patient's nose when in use has an inward depression (such as. Fig.12 ), configured to better accommodate the patient's nose and form a seal.

[0097] The support area 313 is configured to be connected to the connecting part 311 of the elastic part 3. The support area 313 is the largest area among the areas. When in use, it at least partially contacts the patient's face, providing greater support for the face. Through experimental tests, it is demonstrated that the most suitable thickness of the support area 313 is between the stable area 314 and the adjustment area 312, and its wall thickness is 2-9 times that of the adjustment area 312. At least a part of the wall thickness of the support area 313 can be 1.4 mm. However, this wall thickness cannot reach the minimum wall thickness for supporting the face, so the support area 313 is set to have at least two wall thicknesses, and a part close to the connecting part 311 has a thicker wall thickness to achieve the supporting effect, specifically divided into a part close to the face and a part away from the face. The part close to the face is completely or partially in contact with the patient's face when in use, and is a thinner part; while the part away from the face can partially contact the patient's face when in use, and has a gradual thickness and is a thicker part (thicker than the part close to the face). The boundary connecting the two parts can be continuous (smoothly connected) or discontinuous (with steps). The top of the adjacent adjustment area 312 has a thicker wall thickness than the adjustment area 312, which is used to prevent the patient's nose from hitting the bottom during use. Specifically, the support area 313 has a gradient wall thickness at the top of the adjacent adjustment area 312, wherein the wall thickness near the connecting part 311 is thicker, and is constructed to prevent the patient's nose from hitting the bottom during use. The wall thickness of the support area 313 at the top of the adjacent adjustment area 312 may also be uniform.

[0098] The stabilizing area 314 is adjacent to and connected to the supporting area 313. The stabilizing area 314 has a thicker wall thickness than the adjusting area 312 and at least a portion of the supporting area 313. The stabilizing area 314 is constructed to be located at the upper end of the patient interface pad 1 near the nasal adjusting portion 3122, and is used to prevent the elastic portion 3 from folding in this area under the action of pressurized gas during use. The stabilizing area 314 is the area with the smallest proportion in the elastic portion body 31 of the patient interface pad 1, and its wall thickness is 3-10 times that of the adjusting area 312. The stabilizing area 314 may be in the shape of a strip, a triangle or other shapes.

[0099] In another embodiment, the patient interface pad 1 may have other different area divisions besides the area divisions shown in the present invention (such as Fig.14 As shown, Figure A shows that there is no nose side adjustment portion 312, and Figure B shows that the areas of each region are different).

[0100] In another embodiment, the elastic portion 3 and the rigid portion 2 of the patient interface pad 1 are detachably connected, wherein the connection between the elastic portion 3 and the rigid portion 2 can be a physical clip connection (such as Fig.15 as shown), adhesive connection, magnetic connection or other connection methods.

[0101] In another embodiment, the patient interface pad 1 has an exhaust port 4 disposed on the rigid portion 2, wherein the patient interface pad may also have a noise reduction component 41 (eg, Fig.16 As shown, Fig.16 A is a patient interface pad 1 provided with an exhaust port 4, Fig.17 B is a noise reduction component 41 provided on the patient interface pad 1, wherein the noise reduction component 41 can be made of noise reduction cotton or noise reduction net or other materials that can provide noise reduction.

[0102] In another embodiment, the patient interface pad 1 can be provided with a comfort layer on the elastic portion 3 to make the patient more comfortable to use, wherein the material of the comfort layer can be a foam material or a textile material or a composite material of the two (as shown in 17, Fig.17 Only one of the comfort materials is shown to be arranged on the elastic part 3, Fig.17 A is a foam material disposed in contact with the elastic portion 3 of the patient interface pad 1, Fig.17 B is a textile material that is arranged to be connected to the elastic portion 3 of the patient interface pad 1. The comfort layer and the patient interface pad 1 may be connected by a film, an adhesive, or a physical connection.

[0103] Example 2

[0104] This embodiment provides a patient interface pad 1 for use in the CPAP field, as shown in FIG. Fig.18 , Fig.19 This embodiment provides a three-dimensional schematic diagram of the patient interface pad 1. Fig.18 , Fig.19 In the embodiment of the utility model shown, the difference from the patient interface pad 1 in the first embodiment is that the elastic part 3 shown in the utility model is set on another form of the patient interface pad 1. The various areas of the patient interface pad 1 shown in the utility model are obtained after experimental testing and comprehensive consideration of various aspects. The elastic part 3 of the patient interface pad 1 is not only comfortable to wear but also has a more stable sealing. It can be used not only for full-face masks, but also for other patient interfaces, such as nasal masks and oral and nasal masks, to improve the discomfort and poor sealing of other patient interface pads, and ensure the consistency of materials and comfort. Patient interface pads 1 of different forms use the same type of area division and surface treatment method, and can use the same material to achieve similar functions, reducing the trial and error cost, storage cost and management cost of materials; because the area division is roughly the same, it is only necessary to change the composition ratio of different areas of the patient interface pad 1 to obtain different forms of patient interface pads 1, which improves the efficiency of research and development and production. And compared with double-layer and lace-up patient interface pads, the production cost is lower.

[0105] Example 3

[0106] This embodiment provides a patient interface pad 1 for use in the CPAP field, as shown in FIG. Fig. 20 This embodiment provides a three-dimensional schematic diagram of the patient interface pad 1. Fig. 20 In the embodiment of the utility model shown, the difference from the patient interface pad 1 in the first embodiment is that the stable area 314 of the patient interface pad 1 has different forms, and the stable area 314 is discontinuous and consists of several small areas. The advantages of using the same method (dividing at least three different areas) to make the patient interface pad 1 are: on the premise of ensuring the consistency of the product in terms of quality and performance, different patients are provided with patient interface pads with different effects or more diversity to meet the different needs of the patients. Because the patient interface pads have similar structures, patients can anticipate the use effects of the patient interface pads with the same regional divisions, which increases the patient's trust in the product. This method increases the diversity of the patient interface pad 1 without making the production more complicated, and the diversified forms make the product more competitive in the existing market, which has potential benefits for both producers and consumers.

[0107] In another embodiment, the adjustment region 312 of the patient interface pad 1 has a different form (eg, Fig.21 As shown), the adjustment area 312 is discontinuous, and the adjustment area 312 is set at the part of the face with greater facial fluctuations or more sensitive to pressure.

[0108] In another embodiment, the support area 313 of the patient interface pad 1 has a different form. The area or thickness of the thicker part (the part away from the face) and the thinner part (the part close to the face) of the support area 313 is the same as that of the first embodiment, but the variation of the wall thickness of the thicker part and the thinner part is limited. For example, it can be composed of a uniform thinner part close to the face and a uniform thicker part away from the face (such as Fig. 22 A); it can also be composed of a uniform thinner part close to the face and a non-uniform part away from the face (such as Fig. 22 B) or Fig. 22 As shown in C, the areas or thicknesses of the thicker and thinner parts of the support region 313 are different from those in the first embodiment.

[0109] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The patient interface pad 1 of the present invention has at least the following beneficial effects:

[0111] 1) By testing the pressure values ​​and sensitivity of different facial areas and combining the sealing of the patient interface pad 1, the elastic part body 31 is divided into different areas, and each area is given a certain function, providing patients with higher comfort and better user experience and improving patients' compliance with treatment. Through CPAP forums, reddit, Amazon's customer review area, YouTube and other platforms, the utility model has learned that most of the patient interface pads 1 on the existing market have the problem of discomfort or leakage during the wearing process. The reason for the patient's discomfort during the wearing process is not only related to the material of the patient interface pad 1 itself, but also because the patient interface pad 1 cannot completely fit the patient's face. Since different areas of the human face have different curved outer contours, the patient interface pad 1 on the existing market cannot be adjusted and changed to a certain extent according to the curved outer contours of various areas of the face, and therefore cannot provide the patient with satisfactory comfort and pressure. This is also the reason why the patient interface pad 1 on the existing market has insufficient sealing. The same amount of pressure acts on the elastic part 3 of the patient interface pad 1. The elastic part 3 is subjected to the pressure to produce the same degree of deformation to fit the face. However, since the face has different curved outer contours, the same degree of deformation of the elastic part 3 cannot achieve complete fit with the patient's face, thereby causing leakage. In response to this discovery, relevant experiments were conducted on the patient interface pad 1 and the human face, as follows: ① Prepare the required equipment and materials, including: a human head model with standard size, patient interface pads 1 of different types and sizes, pressure sensors (which can be silicon-based pressure sensors or flexible pressure sensors), pressure devices, computers or data acquisition and analysis systems. ② Fit the pressure sensors as densely as possible to various areas of the head model's face (or wear them on the head model's face), fix patient interface pads 1 of different types or sizes to the head model's face, use a standard pressure device (pressure fixture or other equipment) to apply the same pressure to the patient interface pad 1 and record the data of the pressure sensors in various areas of the face, and repeat the test and data analysis. ③ Obtain the average value of the pressure size in various areas of the head model's face to change the problem of poor sealing caused by different fit of the patient interface pad 1 in various areas of the face and poor comfort caused by uneven pressure distribution. Through data analysis and conclusion, the wall thickness of the elastic part main body 31 of the patient interface pad 1 corresponding to the area with the largest average pressure on the head model's face is reduced, so that the patient's face area can fit the corresponding position of the patient interface pad 1 more comfortably, and at the same time, the wall thickness of the elastic part main body 31 area of ​​the patient interface pad 1 corresponding to the area with a smaller average pressure on the head model's face is designed to be a suitable thickness, providing patients with a better use experience while reinforcing the patient interface pad 1 to prevent air leakage. During the experiment, it was also found that the existing patient interface pad 1 on the market has a part that is more easily blown over, so this area is thickened to form a thicker area to prevent it from turning over and leaking.In summary, the utility model draws conclusions based on precise experimental data, and designs the elastic part main body 31 of the patient interface pad 1 that has the greatest contact with the patient's face to be divided into at least three areas, namely the adjustment area 312, the stability area 314, and the support area 313. The adjustment area is configured to increase the compatibility with the patient's face and nose, the stability area 314 is a thickened area to prevent the elastic part 3 from everting, and the support area is the remaining area for supporting the patient interface pad 1 and the patient's face. In order to ensure the supporting effect of the elastic part 3 of the patient interface pad 1, the utility model sets the support area 313 to at least two different thicknesses, the wall thickness of the connecting part 311 close to the elastic part 3 is thicker, the wall thickness of this area can be variable, and the wall thickness of the part close to the patient's face is thinner when in use.

[0112] 2) A thinner edge portion 3121 is provided in the adjustment area 312 to increase compatibility with the patient's face, reduce the patient's sensory characteristics, and make the elastic portion 3 of the patient interface pad 1 fit the patient's face more closely, thereby improving the sealing performance. According to the above experiments, the present invention has noticed that the elastic portion main body 31 of the patient interface pad 1 on the existing market has a great influence on the overall sealing performance and comfort of the entire patient interface pad 1 near the edge portion 3121 opening toward the patient's face. Therefore, the present invention redesigns this portion to improve the comfort and sealing performance while making the patient interface pad 1 more suitable for most patients. a). In the comments of some Amazon buyers and customer reviews on other platforms, the present invention has found that although the patient interface pad 11 on the existing market is provided with S\M\L size types, due to differences in race and weight, some patients still cannot find a patient interface pad 1 that fits their face size. There is a situation where the L size will leak air and the M size will feel obvious squeezing, which causes discomfort. Therefore, the utility model is compatible with more face shapes by thinning the elastic part body 31 of the patient interface pad 1 near the edge part 3121 opening toward the patient's face. The thin edge part 3121 is convenient for folding inwards, so patients with smaller faces can directly use the inner edge as the edge for fitting and sealing under the action of pressurized gas, while patients with larger faces can press down the edge part 3121 of the patient interface pad 1 and actually use the edge of the support part near the edge part 3121 for fitting and sealing. The utility model changes the facial size type adapted by the patient interface pad 1 from a certain value to a certain range, which is convenient for patients who cannot find a suitable size in various brands to choose, thereby expanding the compatibility of the patient interface pad 1. b). In addition to the advantage of increasing compatibility, the utility model designs the edge portion 3121 to be thinner, which also has the advantage of making the patient interface pad 1 more sealed. The edge portion 31213121 is designed to be a thin area with uniform thickness, so that the edge portion is better blown up by the airflow when in use, and it is easier to contact with the patient's face to form a seal, making the seal more stable, and the thinner edge portion 3121 has greater flexibility and can better adapt to different facial contours. The uniform thickness means that the contact surface of the inner edge of the patient interface pad applies a more uniform force to the patient's face, and there will be no excessive pressure points or discomfort, thereby providing a more uniform comfort. At the same time, the uniform thickness can also be applied to more facial contour shapes and adapt to more people. c). The utility model uses a special surface treatment process, and polishing is used on the edge portion 3121. The polished surface is smoother than other surfaces, and has greater adhesion to the skin when in use, so as to better and more stably fit, so that the patient's comfort when wearing the patient interface pad 1 is improved and the possibility of facial irritation when contacting the non-smooth elastic portion 3 is reduced, which is very important for patients with sensitive skin.The polished surface is more uniform and has no concave or protruding surface, which helps to increase the sealing performance between the elastic part 3 of the patient interface pad 1 and the patient's face and reduce air leakage. However, in order to ensure the comfort of the patient interface pad 1, the patient interface pad 1 is also provided with a relatively rough frosted surface. The relatively rough surface can better adapt to the skin and reduce the uneven feeling. The utility model uses a method of combining two surface treatment methods, which can not only ensure better sealing performance but also keep the patient interface pad 1 comfortable.

[0113] 3) Design an easily adjustable area close to the nasal airway to improve the accommodation of the patient's nose and prevent it from hitting the bottom. One of the biggest differences between different people's faces is reflected in the height and width of the nose. Some people have higher nose bridges while others have lower nose bridges. Some people have narrower noses while others have wider noses. This difference leads to a variety of noses of different heights and widths being adapted to the patient interface pad 1. The design of the area where the elastic part main body 31 fits the patient's nose wing will directly affect the fit and sealing effect of the patient interface pad 1 and the patient's face, which is an extremely important link. The patient interface pad 1 shown in the utility model is designed with at least two different wall thicknesses in the area where the elastic part main body 31 fits the patient's nose wing and nose side, so as to provide a greater degree of accommodation for the nose when in use, and can adapt to a variety of different nose heights and widths, further increasing the compatibility of the patient interface pad 1 with the patient's face and providing the best treatment effect. Specifically, a). When the patient uses the patient interface pad 1 shown in the utility model, the elastic part main body 31 has the largest contact area with the patient's nose in the adjustment area 312 with a thinner wall thickness. Because of its thinner wall thickness, it can fit the patient's nose more easily. When the adjustment area is subjected to pressure from the patient's nose, it can also easily obtain the corresponding deformation size according to the height of the nose. In addition, the greater softness brought by its thin wall thickness improves the comfort of the patient. b). The support area 313 has a thicker wall thickness than the adjustment area at the top adjacent to the adjustment area 312, and is configured to prevent the elastic part 3 from directly touching the bottom due to excessive pressure from the patient's nose during use, providing greater support for the patient and reducing the discomfort caused by the patient interface pad 1 on the nose. c). The adjustment area 312 also has a nasal side adjustment part 3122 near the patient's nose, in order to solve the problem that patients with noses of different widths are not compatible with some patient interface pads, and improve the compatibility of the patient interface pad 1 with the patient's nose. When used, patients with narrow noses can directly use the boundary of the thinner area as the outer contour of the elastic portion 3 of the patient interface pad 1 to accommodate the nose under the action of pressurized gas. When used, patients with wider noses can press down the nose side adjustment portion 3122 and use part of the nose side adjustment portion 3122 or directly use the boundary of the nose side adjustment portion 3122 as the outer contour of the elastic portion 3 of the patient interface pad 1 to accommodate the nose, thereby adapting to the faces of patients with different nose widths to ensure the best fit between the patient interface pad 1 and the patient's face, which helps to meet the needs of different patients.

[0114] 4) Compared with the patient interface pad 1 with laces and double layers, the utility model has a simple mold, less materials used, and a low defect rate on the basis of maintaining the original function, which reduces the production cost while protecting the environment and is easy to clean. Most of the patient interface pads 1 in the existing market are designed as a double-layer structure or with laces to ensure that the elastic part 3 does not turn outward. Although these two methods solve the problem of the elastic part 3 turning outward, they also bring many new problems. For example, the design of the double-layer patient interface pad 1 makes it heavier than the single-layer patient interface pad, which easily causes discomfort to the patient, especially when the patient is in a long-term wearing state. The double-layer patient interface pad and the patient interface pad with laces are more expensive in material cost, and both require more complex molds, which increases the mold cost. The process used is also more complicated. In addition, due to the complexity of the process of the double-layer patient interface pad and the patient interface pad 1 with laces, the probability of defective products may increase during the manufacturing process, and the increase in its defect rate further increases its manufacturing cost. It may also waste a certain amount of manpower costs due to quality control and screening. The patient interface pad shown in the utility model replaces the structure of the double-layer patient interface pad or the patient interface pad 1 with a strap with the stabilizing area 314 of the elastic part main body 31 to make it have the same function, use less materials, simpler process, lower cost, and higher qualified rate, and it shows more advantageous features than the existing patient interface pad in all aspects. Moreover, since the patient interface pad 1 shown in the utility model uses less materials, it meets the requirements of green design and has a beneficial effect on climate change and environmental protection. In terms of cleaning, since the double-layer patient interface pad or the patient interface pad 1 with a strap is composed of multiple layers of materials, there may be corners that are easy to accumulate dirt and difficult to clean during cleaning, which may easily cause the growth of microorganisms such as bacteria for a long time, which has an adverse effect on the health of the patient. The cleaning process will take more time and may require more frequent cleaning times to achieve a relatively clean standard. In addition, during the process of using a ventilator to treat obstructive apnea, the patient interface pad 1 itself is prone to moisture accumulation, and the barrier of the multiple layers of materials makes it difficult to volatilize, and it takes a longer time to dry, which is not conducive to the patient's multiple and long-term use, which is also a factor that is not conducive to the patient's health.

[0115] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the inspiration of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A patient interface pad for use in the CPAP field, for delivering breathable pressurized gas to a patient to treat sleep apnea, characterized in that: The patient interface pad includes: a rigid portion having an inlet opening for receiving pressurized breathable gas and configured to be connected to the elastic portion at one end; an elastic portion integrally formed with the rigid portion, comprising an elastic portion body that at least partially contacts the patient's face and forms a seal when in use, and a connecting portion that is connected to the rigid portion; The elastic portion body has at least three different wall thicknesses, including at least: an adjustment region having an opening proximate to the patient's face and an edge portion adjacent to the opening, wherein at least a portion of the edge portion adjacent to the opening has a wall thickness of no more than 0.6 mm; a supporting region configured to be connected to the connecting portion of the elastic portion; A stabilization region, adjacent to and connected to the support region, has a wall thickness that is thicker than at least a portion of the wall thickness of the support region.

2. The patient interface pad according to claim 1, wherein The supporting area has at least two wall thicknesses, and a portion close to the connecting portion has a thicker wall thickness to achieve a supporting effect.

3. The patient interface pad of claim 1, wherein: The regulation region surrounds the patient's nasal and oral airways when in use.

4. The patient interface pad of claim 1, wherein: The stabilization region is the area that occupies the smallest portion of the elastic portion of the patient interface pad.

5. The patient interface pad of claim 1, wherein: The various regions of the elastic part body are smoothly connected without obvious dividing lines.

6. A patient interface pad for use in the CPAP field, for delivering breathable pressurized gas to a patient to treat sleep apnea, characterized in that: The patient interface pad includes: a rigid portion having an inlet opening for receiving pressurized breathable gas and configured to be connected to the elastic portion at one end; an elastic portion having a single-layer wall and integrally formed with the rigid portion, comprising an elastic portion body that at least partially contacts the patient's face and forms a seal when in use, and a connecting portion that is connected to the rigid portion; The elastic part body comprises: an adjustment region having an opening proximate to the patient's face and a rim portion adjacent to the opening; a supporting region, configured to be connected to the connecting portion of the elastic portion, and having a wall thickness 2-9 times that of the adjusting region; The stabilization area is adjacent to and connected to the support area, and its wall thickness is 3-10 times that of the adjustment area.

7. The patient interface pad of claim 6, wherein: The wall thickness of the adjustment area is at least 0.3 mm.

8. The patient interface pad of claim 6, wherein: The width of the edge portion of the adjustment area is at most 2 cm.

9. The patient interface pad of claim 6, wherein: Each area of ​​the elastic portion body has a uniform wall thickness.

10. The patient interface pad of claim 6, wherein: The different regions of the elastic part body are changed in different wall thicknesses by using a sudden change, and there are obvious dividing lines between the regions.

11. A patient interface pad for use in the CPAP field, for delivering breathable pressurized gas to a patient to treat sleep apnea, characterized in that: The patient interface pad includes: a rigid portion having an inlet opening for receiving pressurized breathable gas and configured to be connected to the elastic portion at one end; an elastic portion integrally formed with the rigid portion, comprising an elastic portion body that at least partially contacts the patient's face and forms a seal when in use, and a connecting portion that is connected to the rigid portion; The elastic portion body has at least three different wall thicknesses and at least two surface treatments, including at least: an adjustment area having an opening close to the patient's face and an edge portion adjacent to the opening, wherein at least a portion of the edge portion is polished; a support region configured to be connected to the connecting portion of the elastic portion and having a thicker wall thickness adjacent to a top portion of the adjustment region than that of the adjustment region for preventing a patient's nose from bottoming out during use; A stabilization region, adjacent to and connected to the support region, has a thicker wall thickness than the adjustment region.

12. The patient interface pad of claim 11, wherein: The support region has a tapered wall thickness adjacent to a top portion of the adjustment region, wherein the wall thickness is thicker near the connecting portion.

13. The patient interface pad of claim 11, wherein: The maximum width of the adjustment area on the top of the patient interface cushion for accommodating the nose does not exceed 5.5 cm.

14. The patient interface pad of claim 11, wherein: The portion of the adjustment area that contacts the patient's nose during use has an inward depression, configured to better accommodate the patient's nose and form a seal.

15. The patient interface pad of claim 11, wherein: The stabilization region is the area that occupies the smallest portion of the elastic portion of the patient interface pad.

16. A patient interface pad for use in the CPAP field, for delivering breathable pressurized gas to a patient to treat sleep apnea, characterized in that: The patient interface pad includes: a rigid portion having an inlet opening for receiving pressurized breathable gas and configured to be connected to the elastic portion at one end; an elastic portion integrally formed with the rigid portion, comprising an elastic portion body that at least partially contacts the patient's face and forms a seal when in use, and a connecting portion that is connected to the rigid portion; The elastic portion body has at least three different wall thicknesses, including: an adjustment region having an opening proximate to the patient's face and a rim portion adjacent to the opening; a supporting region configured to be connected to the connecting portion of the elastic portion and having a gradually varying wall thickness at a portion adjacent to the connecting portion; A stabilization region is adjacent to and connected to the support region.

17. The patient interface pad of claim 16, wherein: The adjustment region includes a nose side adjustment portion having a wall thickness between the edge portion and the support region.

18. The patient interface pad of claim 16, wherein: The width of the edge portion of the adjustment area is at most 2 cm.

19. The patient interface pad of claim 16, wherein: The stabilization region is the area that occupies the smallest portion of the elastic portion of the patient interface pad.

20. The patient interface pad of claim 16, wherein The different regions of the elastic part body are changed in different wall thicknesses by using a sudden change, and there are obvious dividing lines between the regions.

21. A patient interface pad for use in the CPAP field, for delivering breathable pressurized gas to a patient to treat sleep apnea, characterized in that: The patient interface pad includes: a rigid portion having an inlet opening for receiving pressurized breathable gas and configured to be connected to the elastic portion at one end; an elastic portion having a single-layer wall and integrally formed with the rigid portion, comprising an elastic portion body that at least partially contacts the patient's face and forms a seal when in use, and a connecting portion that connects to the rigid portion; The elastic part body comprises: a supporting region configured to be connected to the connecting portion of the elastic portion; an adjustment region having an opening close to the patient's face and an edge portion adjacent to the opening, and a nasal adjustment portion close to the edge portion and having a wall thickness between the edge portion and the support region, wherein at least a portion of the wall thickness of the adjustment region is at least 0.3 mm; A stabilization region is adjacent to and connected to the support region.

22. The patient interface pad of claim 21, wherein: The stabilization region has a thicker wall thickness than at least portions of the adjustment region and the support region.

23. The patient interface pad of claim 21, wherein The supporting area has at least two wall thicknesses, and a portion close to the connecting portion has a gradually changing wall thickness to achieve a supporting effect.

24. The patient interface pad of claim 21, wherein The elastic portion has at least three different wall thicknesses.

25. The patient interface pad of claim 21, wherein The various regions of the elastic part body are smoothly connected without obvious dividing lines.

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