Pressure sore prevention pad special for high-flow oxygen therapy instrument

Abstract

The utility model relates to the technical field of pressure sore prevention pads, and discloses a special pressure sore prevention pad for a high-flow oxygen therapy instrument, which comprises a claw rod, an air supply pipe is fixedly mounted in the middle of the claw rod, clamping joints are clamped at two ends of the claw rod, each clamping joint is fixedly connected with a butt joint, each butt joint is detachably connected with a connecting ring, and the connecting ring is detachably connected with the claw rod. One side of the connecting ring is fixedly connected with elastic strips, a fastening strip is fixedly connected between the two elastic strips, each elastic strip is movably connected with a sore pad seat, one side of each sore pad seat is connected with a skin-friendly pad, a plurality of negative pressure holes are annularly formed in each skin-friendly pad, a pair of biting and hinging channels are formed in each sore pad seat, and the negative pressure holes are communicated with the negative pressure holes. According to the special pressure sore prevention pad for the high-flow oxygen therapy instrument, negative pressure is generated between the outer surface of the thin film and the negative pressure hole, so that the negative pressure hole is tightly contacted with the skin, and the slipping phenomenon between the skin-friendly pad and the skin is prevented.

Description

Technical Field

[0001] This invention relates to the field of pressure ulcer prevention pad technology, specifically a pressure ulcer prevention pad for high-flow oxygen therapy devices. Background Technology

[0002] High-flow humidified respiratory therapy refers to a treatment method that continuously provides patients with high-flow (8-80 L / min) inhaled gas through a dedicated high-flow nasal plug or other patient interface, with adjustable and relatively constant oxygen concentration (21%-100%), temperature (31-37℃), and humidity.

[0003] High-flow oxygen therapy devices deliver oxygen at much higher pressures than regular oxygen devices. Therefore, elastic bands or similar straps are needed to secure the oxygen mouthpiece to the nostrils. However, when these straps are on the face for extended periods, the skin becomes dehydrated and turns pale due to insufficient breathing. Marks left on the skin can make it prone to breakage. Furthermore, for patients with pre-existing skin injuries, the elastic bands keep the skin taut, hindering post-operative recovery. Especially when the patient moves their head, the existing elastic bands fail to provide adequate protection. During sleep, they can also aggravate wounds, further increasing the area of ​​ulceration and complicating treatment and care. Therefore, we propose a special anti-pressure ulcer pad for high-flow oxygen therapy devices. Summary of the Invention

[0004] The purpose of this invention is to provide a pressure ulcer prevention pad specifically for high-flow oxygen therapy devices, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pressure ulcer prevention pad for high-flow oxygen therapy devices, comprising a ram's horn rod, an air supply pipe fixedly installed in the middle of the ram's horn rod, and snap-fit ​​connectors at both ends of the ram's horn rod. Each snap-fit ​​connector is fixedly connected to a mating connector, and a connecting ring is detachably connected to each mating connector. An elastic strip is fixedly connected to one side of the connecting ring, and a fastening strip is fixedly connected between two elastic strips. A pressure ulcer pad seat is movably connected to each elastic strip, and a skin-friendly pad is connected to one side of the pressure ulcer pad seat. The skin-friendly pad has multiple negative pressure holes arranged in a ring on it, and a pair of interlocking channels are formed inside the pressure ulcer pad seat. Each interlocking channel has a sliding... A movable rod is connected to the pad. One end of the movable rod is provided with a semi-fastening ring. The pad is suspended on an elastic strip through the semi-fastening ring. The other end of the movable rod is fixedly connected to an adhesive ring. A corresponding piece is fixedly connected to the outer ring of the adhesive ring. A fixed end is fixedly connected next to the connection between the pad and the skin-friendly pad. A thin film is provided between the two corresponding pieces and the outer edge of the adhesive ring. One end of the thin film is fixedly connected to the fixed end. A negative pressure environment is formed between the thin film and the skin-friendly pad. The outside of the thin film and the inside of the skin-friendly pad are slidably connected. A piston is fixedly connected between the two movable rods. After the piston slides on the inner wall of the pad, it causes the corresponding piece to drive one end of the thin film to move inside the skin-friendly pad.

[0006] Preferably, a first fixing rod is fixedly connected to both ends of one side of the connecting ring, and an elastic line is fixedly connected between the opposing surfaces of the two first fixing rods on the same side. When the elastic strip undergoes tensile deformation, the first fixing rod is used to guide the elastic strip to bend towards the middle of the two elastic lines.

[0007] Preferably, the skin-friendly pad is made of a soft material, and its exterior is detachably connected to the pad seat, with one end edge and the adhesive ring adsorbed together by adhesive adhesion.

[0008] Preferably, one end of the film is fixed to the fixed end, and the other end is fixed to the corresponding piece. After being squeezed, its edge moves towards the inner corner of the skin-friendly pad and contacts the negative pressure hole, and its outer edge near the fixed end is fixedly connected to the inner wall of the skin-friendly pad.

[0009] Preferably, the ulcer pad seat has a pair of breathing chambers inside, and a negative pressure zone is formed on one side of the ulcer pad seat. Each corresponding piece is fixedly connected to a ventilation block facing the port of the breathing chamber. The ventilation block has a third through hole. The ulcer pad seat has multiple first through holes inside, which communicate with the breathing chambers. The inner wall of the ulcer pad seat has a second through hole near the piston. The second through hole communicates with the breathing chambers through the first through holes. A pair of damping strips are provided on the inner ring of one end of the ulcer pad seat. A locking disc is rotatably connected to the ulcer pad seat. The edge of the locking disc has protruding protrusions. An inner turntable is fixedly connected to one side of the locking disc. A pair of air outlet pipes are fixedly connected to the inner turntable. When the locking disc and the ulcer pad seat are fixed, the air outlet pipes communicate with the breathing chambers.

[0010] Preferably, one end of the damping strip is close to the inner edge of the pad seat, and the other end is close to the axis of the pad seat. An inclined surface is formed between the two ends of the damping strip, and the locking disc is fixed by the convex area and the damping strip sliding locking method.

[0011] Preferably, a second turntable is fixedly installed on the other side of the locking disc, and a connecting rod is fixedly connected to both ends of the second turntable facing the pad seat. An elastic ring is fixedly connected to the outer edge of the skin-friendly pad, and a pair of wedges are fixedly installed on the inner ring of the elastic ring. The middle part of the connecting rod is bent and one end is close to the wedge.

[0012] Preferably, a lead screw is rotatably connected to the pad, a first turntable is fixedly connected to one end of the lead screw, a second fixed rod is fixedly connected inside the pad near the lead screw, a movable disc is slidably connected to the second fixed rod, and a pressing rod is fixedly connected to both ends of one side of the movable disc, and the movable disc and the lead screw are threaded together.

[0013] Preferably, the skin-friendly pad is made of hydrogel, and the unfolded area of ​​the skin-friendly pad is cm2.

[0014] Preferably, the surfaces of the second turntable and the first turntable are treated with anti-slip material, and the first turntable and the second turntable are slidably connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In this invention, the elastic strip bends between two elastic lines. During the bending process, the two ends of the elastic strip can drive the semi-hooked rings to move. When the semi-hooked rings move, they pull the movable rod to move, causing the movable rod to swing up and down in the interlocking channel. During the swinging of the movable rod, its other end swings on the piston, causing the piston to deform slightly and move towards the interlocking channel. The end of the movable rod can also pull the adhesive ring, causing the adhesive ring to drive the corresponding piece to move synchronously. The end of the film connected to the corresponding piece moves with the movement of the corresponding piece, and contacts the outer surface of the film and the inner wall of the skin-friendly pad. The other end of the film is fixed to the pad seat. During the movement of the corresponding piece, the adhesive ring and the skin-friendly pad separate, creating negative pressure between the outer surface of the film and the negative pressure hole, making the negative pressure hole contact the skin more tightly and preventing slippage between the skin-friendly pad and the skin.

[0017] When the locking disc rotates, the raised area on its edge contacts the damping strip. At the same time, the rotation of the locking disc can drive the inner disc to rotate, allowing the air outlet on the inner disc to connect with the end of the breathing chamber. This allows the outside air to communicate with the air covered by the skin-friendly pad, facilitating the skin's breathing at the wound site. This improves wound care and reduces wound recovery time without the skin-friendly pad touching the wound. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the pad and movable rod of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the pad seat of the present invention;

[0022] Figure 5 This is a disassembled schematic diagram of the internal structure of the sore pad and the skin-friendly pad of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0024] Figure 7 This is a schematic diagram of the planar structure of the pad seat of the present invention;

[0025] Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C;

[0026] Figure 9 This is a schematic diagram of the joint, connecting ring, and elastic strip structure of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the skin-friendly pad of the present invention;

[0028] Figure 11 This is a schematic diagram of the second shape of the skin-friendly pad and its overall connection according to the present invention.

[0029] In the diagram: 1-Strong horn rod; 2-Air supply pipe; 3-Clamping connector; 4-Matching connector; 5-Connecting ring; 6-Elastic strip; 7-Skin pad seat; 701-Negative pressure hole; 702-Skin-friendly pad; 8-Fastening strip; 9-First fixing rod; 10-Elastic line; 11-Damping strip; 12-Breathing chamber; 13-First through hole; 14-Negative pressure zone; 15-Second through hole; 16-Hinge channel; 17-Moving rod; 1701-Piston; 170 2-Ventilation block; 18-Half-fastening ring; 19-Adhesive ring; 20-Corresponding piece; 21-First turntable; 22-Screw rod; 23-Second turntable; 24-Connecting rod; 25-Tightening ring; 26-Wedge block; 27-Locking disc; 2701-Protrusion area; 28-Inner turntable; 29-Air outlet pipe; 30-Membrane; 3001-Fixed end; 31-Third through hole; 32-Second fixed rod; 33-Moving disc; 34-Extrusion rod. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1-11This invention provides a technical solution: a pressure ulcer prevention pad for high-flow oxygen therapy devices, comprising a ram's horn rod 1, an air supply pipe 2 fixedly installed in the middle of the ram's horn rod 1, and clamping connectors 3 at both ends of the ram's horn rod 1. Each clamping connector 3 is fixedly connected to a connecting connector 4, and each connecting connector 4 is detachably connected to a connecting ring 5. An elastic strip 6 is fixedly connected to one side of each connecting ring 5, and a fastening strip 8 is fixedly connected between two elastic strips 6. A pressure ulcer pad seat 7 is movably connected to each elastic strip 6, and a skin-friendly pad is connected to one side of each pressure ulcer pad seat 7. 702, the skin-friendly pad 702 has multiple negative pressure holes 701 arranged in a ring. The sore pad seat 7 has a pair of interlocking channels 16 inside. Each interlocking channel 16 is slidably connected to a movable rod 17. One end of the movable rod 17 is provided with a half-ring 18. The sore pad seat 7 is suspended on the elastic strip 6 through the half-ring 18. The other end of the movable rod 17 is fixedly connected to an adhesive ring 19. A corresponding piece 20 is fixedly connected to the outer ring of the adhesive ring 19. A fixed end 300 is fixedly connected next to the connection between the sore pad seat 7 and the skin-friendly pad 702. 1. A thin film 30 is provided between the outer edges of the two corresponding pieces 20 and the adhesive ring 19. One end of the thin film 30 is fixedly connected to the fixed end 3001. A negative pressure environment is formed between the thin film 30 and the skin-friendly pad 702. The outside of the thin film 30 and the inside of the skin-friendly pad 702 are slidably connected. A piston 1701 is fixedly connected between the two movable rods 17. After the piston 1701 slides on the inner wall of the pad seat 7, it causes the corresponding piece 20 to drive one end of the thin film 30 to move inside the skin-friendly pad 702. Both ends of one side of the connecting ring 5 are fixed. A first fixing rod 9 is connected, and an elastic line 10 is fixedly connected between the two opposing surfaces of the first fixing rods 9 on the same side. When the elastic strip 6 undergoes tensile deformation, the first fixing rod 9 serves to guide the elastic strip 6 to bend towards the middle of the two elastic lines 10. The skin-friendly pad 702 is made of a soft material, and its exterior is detachably connected to the pad seat 7. One edge of its interior is adhered to the adhesive ring 19 by adhesive adhesion. The skin-friendly pad 702 is made of hydrogel, and the unfolded area of ​​the skin-friendly pad 702 is 5 cm2.

[0032] Example 2: For example, in the appendix Figure 11 The skin-friendly pad 702 shown is elongated. Without changing its internal structure, the area of ​​skin not covered by the skin around the skin-friendly pad 702 in Example 1 is increased, reducing the pressure of the skin-friendly pad 702 on the skin and providing further comfort to the patient.

[0033] One end of the film 30 is fixed to the fixed end 3001, and the other end is fixed to the corresponding piece 20. After being squeezed, its edge moves towards the inner corner of the skin-friendly pad 702 and contacts the negative pressure hole 701. Its outer edge near the fixed end 3001 is fixedly connected to the inner wall of the skin-friendly pad 702.

[0034] During the use of the device, the nasal suction nozzle on the inner ring of the ram's horn rod 1 is inserted into the patient's nostril. Then, the fastening strip 8 is wrapped around the back of the patient's head. The wound pad 7 is then aligned with the patient's face or the wound, bringing the skin-friendly pad 702 into contact with the patient's skin. This compresses the membrane 30 containing a fixed amount of gas, reducing the space between it and the skin-friendly pad 702. The fastening strip 8 is then manually pulled. During this process, the elastic strip 6 becomes elastic, increasing its surface tension and making it easier for the two sides to bend towards the center. Simultaneously, the first fixing rods 9 between the two connecting rings 5 ​​are in opposing states, and the two first fixing rods 9 and the connecting rings 5 ​​are fixed, unaffected by external forces. The movement of the connecting ring 5 causes any change in angle. The semi-hooked ring 18 is initially attached to the elastic strip 6. As the elastic strip 6 is stretched, its two ends contact the first fixed rod 9, causing the first fixed rod 9 to interfere with the side edges of the elastic strip 6. This causes the elastic strip 6 to bend between the two elastic lines 10 during the stretching process. During the bending process, the elastic strip 6 moves away from the face direction after being stressed. The two ends of the elastic strip 6 can drive the semi-hooked ring 18 to move. When the semi-hooked ring 18 moves, it pulls the movable rod 17 to move, causing the movable rod 17 to swing up and down in the engagement channel 16. During the swinging process of the movable rod 17, its other end swings on the piston 1701. This causes the piston 1701 to undergo a slight deformation and move towards the meshing channel 16. During this process, the end of the movable rod 17 can also pull the adhesive ring 19, causing the adhesive ring 19 to drive the corresponding piece 20 to move synchronously. This causes the end of the film 30 connected to the corresponding piece 20 to move along with the corresponding piece 20, and the outer surface of the film 30 to contact the inner wall of the skin-friendly pad 702. The other end of the film 30 is fixed to the pad seat 7 through the fixed end 3001. During the movement of the corresponding piece 20, the adhesive ring 19 and the skin-friendly pad 702 separate, creating a negative pressure between the outer surface of the film 30 and the negative pressure hole 701. This makes the negative pressure hole 701 more tightly contacted with the skin, preventing the skin-friendly pad 702 from getting stuck between the skin and the skin. The slippage phenomenon is detrimental to wound healing. During the negative pressure generation process inside the skin-friendly pad 702, due to the flexible material of the pad 702, the film 30 separates from the inner wall of the pad 702, causing a portion of the pad 702 to separate from the skin. This separation depends on the size of the wound and can be determined by manually adjusting the elasticity of the elastic strip 6 and the tightness of the fastening strip 8. When the fastening strip 8 is less tight, the tension of the elastic strip 6 decreases, the pressure in direct contact with the first fixing rod 9 decreases, and therefore the bending degree of the first fixing rod 9 decreases. Consequently, the range of motion of the elastic strip 6 driving the semi-hooking ring 18 decreases, the movement range of the corresponding piece 20 decreases, and the movement of the film 30 inside the skin-friendly pad 702 decreases.Because the outer surface of the skin-friendly pad 702 is in direct contact with the skin, the negative pressure efficiency of the film 30 is reduced. This results in insufficient suction inside the skin-friendly pad 702 to allow for a larger area of ​​separation between its outer surface and the skin. This makes the skin-friendly pad 702 suitable for small wounds due to its larger contact area. Conversely, when the fastening strip 8 is more secure, the contact area between the skin-friendly pad 702 and the skin is smaller, making it suitable for larger wounds.

[0035] It is worth mentioning that if the patient has a wound on their face, the wound should be treated with medication before the skin-friendly pad 702 is applied, and then the pad should be applied to cover the wound. This allows the skin-friendly pad 702 to cover the medication powder, preventing the powder from rubbing onto other areas and causing contamination, which would slow down the wound treatment process.

[0036] The ulcer pad 7 has a pair of breathing chambers 12 inside, and a negative pressure zone 14 is formed on one side inside the ulcer pad 7. Each corresponding piece 20 is fixedly connected to a vent block 1702 facing the port of the breathing chamber 12. The vent block 1702 has a third through hole 31. The ulcer pad 7 has multiple first through holes 13 inside, which communicate with the breathing chambers 12. The inner wall of the ulcer pad 7 has a second through hole 15 near the piston 1701. The second through hole 15 communicates with the breathing chambers 12 through the first through holes 13. A pair of damping strips are provided on the inner ring of one end of the ulcer pad 7. 11. A locking disc 27 is rotatably connected to the sore pad 7. The edge of the locking disc 27 has a protruding protrusion area 2701. An inner turntable 28 is fixedly connected to one side of the locking disc 27. A pair of air outlet pipes 29 are fixedly connected to the inner turntable 28. When the locking disc 27 and the sore pad 7 are fixed, the air outlet pipes 29 communicate with the breathing chamber 12. One end of the damping strip 11 is close to the inner wall edge of the sore pad 7, and the other end is close to the axis of the sore pad 7. An inclined surface is formed between the two ends of the damping strip 11. The locking disc 27 is fixed by sliding locking the protrusion area 2701 and the damping strip 11.

[0037] As the corresponding piece 20 moves toward the end of the breathing chamber 12, the ventilation block 1702 comes into contact with the breathing chamber 12. When the ventilation block 1702 is above the first through hole 13, the bottom of the third through hole 31 communicates with the first through hole 13. Due to the slight deformation of the piston 1701, and the piston 1701 passing over the second through hole 15, the third through hole 31 and the first through hole 13 and the second through hole 15 are interconnected. This allows the gas inside the breathing chamber 12 to exchange with the air near the skin through the third through hole 31 and the first through hole 13 and the second through hole 15. Manually rotate the second turntable 23, causing the second turntable 23 to drive the locking disc 27 to rotate. When the locking disc 27 rotates, the protruding area 2701 on its edge contacts the damping strip 11. At the same time, during the rotation of the locking disc 27, the inner turntable 28 can be driven to rotate, allowing the air outlet 29 on the inner turntable 28 to communicate with the end of the breathing chamber 12. This allows the outside air to communicate with the air covered by the skin-friendly pad 702, facilitating the skin's breathing at the wound site. This improves the wound care effect and reduces the wound recovery time without the skin-friendly pad 702 contacting the wound.

[0038] A second turntable 23 is fixedly installed on the other side of the locking disc 27. A connecting rod 24 is fixedly connected to both ends of the second turntable 23 facing the pad seat 7. A tension ring 25 is fixedly connected to the outer edge of the skin-friendly pad 702. A pair of wedges 26 are fixedly installed on the inner ring of the tension ring 25. The middle part of the connecting rod 24 is bent and one end is close to the wedge 26.

[0039] When the second turntable 23 rotates, it can simultaneously drive the connecting rod 24 to rotate around the wound pad seat 7, causing one end of the connecting rod 24 to contact the wedge block 26. As the end of the connecting rod 24 slides against the inclined surface of the wedge block 26, the tension ring 25 expands radially toward the skin-friendly pad 702, causing the edge of the skin-friendly pad 702 to tend to squeeze toward the skin. This further enhances the effect of the negative pressure hole 701 on the skin-friendly pad 702 adhering tightly to the skin, preventing the wound pad seat 7 from shifting under force when the patient moves their head or while sleeping, thus preventing further secondary damage to the wound.

[0040] A lead screw 22 is rotatably connected to the sore pad 7. One end of the lead screw 22 is fixedly connected to a first turntable 21. Inside the sore pad 7, near the lead screw 22, a second fixed rod 32 is fixedly connected. A movable disc 33 is slidably connected to the second fixed rod 32. Two ends of one side of the movable disc 33 are fixedly connected to a pressing rod 34. The movable disc 33 and the lead screw 22 are threaded together. The surfaces of the second turntable 23 and the first turntable 21 are treated with anti-slip material, and the first turntable 21 and the second turntable 23 are slidably connected.

[0041] If, after the fastening strip 8 tightens around the head, the skin-friendly pad 702 needs to be adjusted again to cover the wound, the first turntable 21 can be manually rotated. During the rotation of the first turntable 21, the lead screw 22 can be rotated, causing the movable disc 33 to move linearly under the restriction of the second fixed rod 32. This allows the squeezing rod 34 to contact the elastic strip 6 a second time, making the bending degree of the elastic strip 6 deeper. This eliminates the need to repeatedly adjust the tightness of the fastening strip 8, simplifying the operation process, reducing the difficulty of operation, and making the device convenient.

[0042] If the skin-friendly pad 702 needs to be moved after prolonged contact with the skin, you can loosen the fastening strip 8 slightly to remove the negative pressure effect between the skin-friendly pad 702 and the skin. Then, hold the pad base 7 and move it to the desired position, and tighten the fastening strip 8 again. It's simple and practical.

[0043] The device is assembled, and the ram's horn rod 1 can be disassembled from the snap-fit ​​connector 3 to replace it with a new one that contacts the patient's nostril. The wound pad seat 7 and the skin-friendly pad 702 can also be disassembled, either by threaded connection or snap-fit ​​(not shown in the figure, but these are existing connection methods and should be known), so they will not be described in detail. Since the possibility of infection needs to be ruled out during the medical process, except for the ram's horn rod 1 that contacts the patient's nasal cavity and the skin-friendly pad 702 that contacts the wound, which are disposable items, the other structures do not interfere with the physiotherapy process and do not have the possibility of infection. Therefore, they do not need to be replaced in the short term, saving material costs. Of course, the service life of the device should be limited, depending on the condition of the device. If the device is damaged, then the device can be considered a disposable item.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The high-flow oxygen therapy instrument special pressure ulcer prevention pad, including the horn lever (1), the horn lever (1) middle part fixed mounting has the gas supply pipe (2), the horn lever (1) both ends are all clamped with the clamping head (3), it is characterized by: Each of the snap-fit ​​connectors (3) is fixedly connected to a connector (4), and each connector (4) is detachably connected to a connecting ring (5). An elastic strip (6) is fixedly connected to one side of the connecting ring (5), and a fastening strip (8) is fixedly connected between two elastic strips (6). Each elastic strip (6) is movably connected to a sore pad seat (7), and a skin-friendly pad (702) is connected to one side of the sore pad seat (7). The skin-friendly pad (702) has multiple negative pressure holes (701) arranged in a ring on it. A pair of interlocking channels (16) are opened inside the sore pad seat (7). A movable rod (17) is slidably connected to each interlocking channel (16). A half-ring (18) is provided at one end of the movable rod (17). The sore pad seat (7) is suspended on the elastic strip (6) through the half-ring (18). 7) An adhesive ring (19) is fixedly connected to the other end. A corresponding piece (20) is fixedly connected to the outer ring of the adhesive ring (19). A fixed end (3001) is fixedly connected to the side of the connection between the sore pad seat (7) and the skin pad (702). A film (30) is provided between the two corresponding pieces (20) and the outer edge of the adhesive ring (19). One end of the film (30) is fixedly connected to the fixed end (3001). A negative pressure environment is formed between the film (30) and the skin pad (702). The outside of the film (30) and the inside of the skin pad (702) are slidably connected. A piston (1701) is fixedly connected between the two movable rods (17). After the piston (1701) slides on the inner wall of the sore pad seat (7), the corresponding piece (20) drives one end of the film (30) to move inside the skin pad (702).

2. The high flow oxygen therapy specific anti-pressure ulcer pad of claim 1, wherein: The connecting ring (5) is fixedly connected to two ends of one side with a first fixing rod (9). The two first fixing rods (9) on the same side are fixedly connected to opposite sides with an elastic line (10). When the elastic strip (6) undergoes tensile deformation, the first fixing rod (9) is used to guide the elastic strip (6) to bend towards the middle of the two elastic lines (10).

3. The high flow oxygen therapy specific anti-pressure ulcer pad of claim 1, wherein: The skin-friendly pad (702) is made of a soft material and is detachably connected to the outer part of the pad and the pad seat (7). One edge of the inner part and the adhesive ring (19) are adhered together by adhesive.

4. The pressure ulcer prevention pad for high-flow oxygen therapy devices according to claim 1, characterized in that: One end of the film (30) is fixed to the fixed end (3001), and the other end is fixed to the corresponding piece (20). After being squeezed, its edge moves towards the inner corner of the skin-friendly pad (702) and contacts the negative pressure hole (701). Its outer edge near the fixed end (3001) is fixedly connected to the inner wall of the skin-friendly pad (702).

5. The anti-pressure ulcer pad for high-flow oxygen therapy devices according to claim 4, characterized in that: The sore pad (7) has a pair of breathing chambers (12) inside. A negative pressure zone (14) is provided on one side of the sore pad (7). Each corresponding piece (20) is fixedly connected to a ventilation block (1702) facing the port of the breathing chamber (12). A third through hole (31) is provided on the ventilation block (1702). Multiple first through holes (13) are provided inside the sore pad (7). The first through holes (13) communicate with the breathing chamber (12). A second through hole (15) is provided on the inner wall of the sore pad (7) near the piston (1701). The hole (15) is connected to the breathing chamber (12) through the first through hole (13). A pair of damping strips (11) are provided on the inner ring of one end of the sore pad (7). A locking disc (27) is rotatably connected to the sore pad (7). The edge of the locking disc (27) has a protruding protrusion area (2701) that protrudes outward. An inner turntable (28) is fixedly connected to one side of the locking disc (27). A pair of air outlet pipes (29) are fixedly connected to the inner turntable (28). When the locking disc (27) and the sore pad (7) are fixed, the air outlet pipes (29) and the breathing chamber (12) are connected.

6. The high flow oxygen therapy specific anti-pressure ulcer pad of claim 5, wherein: One end of the damping strip (11) is close to the inner edge of the pad seat (7), and the other end is close to the axis of the pad seat (7). An inclined surface is formed between the two ends of the damping strip (11). The locking disc (27) is fixed by sliding and locking the convex area (2701) and the damping strip (11).

7. The high flow oxygen therapy specific anti-pressure ulcer pad of claim 6, wherein: A second turntable (23) is fixedly installed on the other side of the locking disc (27). A connecting rod (24) is fixedly connected to both ends of the second turntable (23) facing the pad seat (7). A tension ring (25) is fixedly connected to the outer edge of the skin-friendly pad (702). A pair of wedges (26) are fixedly installed on the inner ring of the tension ring (25). The middle part of the connecting rod (24) is bent and one end is close to the wedge (26).

8. The high flow oxygen therapy specific anti-pressure ulcer pad of claim 1, wherein: A lead screw (22) is rotatably connected to the sore pad (7). A first turntable (21) is fixedly connected to one end of the lead screw (22). A second fixed rod (32) is fixedly connected inside the sore pad (7) near the lead screw (22). A movable disc (33) is slidably connected to the second fixed rod (32). A pressing rod (34) is fixedly connected to both ends of one side of the movable disc (33). The movable disc (33) and the lead screw (22) are threaded together.

9. The high flow oxygen therapy specific anti-pressure ulcer pad of claim 1, wherein: The skin-friendly pad (702) is made of hydrogel, and the skin-friendly pad (702) has an unfolded area of 5 cm 2 .

10. The high flow oxygen therapy device specific pressure ulcer prevention mat of claim 7, wherein: The second turntable (23) and the first turntable (21) have anti-slip surface treatment, and the first turntable (21) and the second turntable (23) are slidably connected.

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