CN114053010A

CN114053010A - Household negative pressure oxygen therapy device for daily cleaning and physical therapy of chronic wound

Info

Publication number: CN114053010A
Application number: CN202111186260.9A
Authority: CN
Inventors: 李泽华; 李升红; 刘宏伟; 卢金强; 韩雯雯
Original assignee: First Affiliated Hospital of Jinan University
Current assignee: First Affiliated Hospital of Jinan University
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-02-18
Anticipated expiration: 2041-10-12
Also published as: CN114053010B

Abstract

The invention discloses a household negative pressure oxygen therapy device for daily cleaning and physical therapy of chronic wounds, which comprises a device box, wherein a maneuvering bin and a storage bin are arranged inside the device box, a groove is formed in the middle of the top of the device box, two sides of the inner wall of the maneuvering bin are connected with supports extending to the outside of the device box in a sliding mode, a top plate is arranged on the top of each support, the bottom of each top plate is connected with a device box through a moving assembly, and a pressing assembly is arranged in a concave position of the bottom of each device box. The wound dressing device can automatically adjust the clamping force on the affected limb through the self force application of the patient, ensures that the patient can treat the wound surface in a relatively comfortable environment, can automatically apply medicine without assistance of other people, is more convenient to use, can automatically cut off the wrapping cloth used previously by the blade after cleaning is completed, and can conveniently clean the wrapping cloth after the cutting falls into the storage bin.

Description

Household negative pressure oxygen therapy device for daily cleaning and physical therapy of chronic wound

Technical Field

The invention relates to the technical field of medical instruments, in particular to a household negative pressure oxygen therapy device for daily cleaning and physical therapy of chronic wounds.

Background

The chronic difficult-to-heal wound surface refers to a wound surface which is not healed after being treated for more than 1 month and is caused by various reasons, and is commonly seen in diseases such as diabetic foot, pressure sore, vascular ulcer, burn and scald and the like. Due to large wound area, complicated wound condition, local tissue infection, blood supply disorder, poor nutritional condition and the like, cell proliferation disorder and epithelization are hindered, and the wound surface is delayed and developed into a chronic wound surface. The treatment of chronic wound is a long-term process, and the thorough debridement, anti-infection and negative pressure closed drainage treatment are carried out during the early hospitalization. After the disease condition is basically controlled and the healing trend appears, the patient is generally recommended to be discharged from the hospital due to the consideration of medical resources, hospitalization cost, life convenience and other factors, and the conventional treatment and the regular re-diagnosis are mainly completed at home in the later period.

The daily home care after discharge mainly comprises wound dressing, removal of a small amount of exudate and secretion, oxygen blowing and the like to create a dry and clean environment to promote healing. Although the operation is simple, the patient still has certain difficulty and needs others to assist after independently completing, and the household wound oxygen therapy instrument on the market at present does not have the function of dressing or cleaning the wound, so the use is troublesome.

Disclosure of Invention

The invention aims to provide a household negative pressure oxygen therapy device for daily cleaning and physical therapy of chronic wounds to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wounds comprises a device box, wherein a motorized bin and a storage bin are arranged inside the device box, a groove is formed in the middle of the top of the device box, two sides of the inner wall of the motorized bin are connected with supports extending to the outside of the device box in a sliding mode, a top plate is arranged on the top of each support, a device box is connected to the bottom of each top plate, and a pressing component is arranged in a concave position of the bottom of each device box;

a winding roller, a clamping unit, a fixed roller, a cutting assembly and a driven assembly are sequentially arranged in the device box from left to right;

the cotton placing device is characterized in that placing cotton is arranged in the groove, the placing cotton is of a cylindrical structure, a lifting rack penetrating into the interior of the maneuvering bin is arranged at the bottom of the placing cotton, a driving wheel and two rotating gears are arranged in the maneuvering bin, the two rotating gears are respectively positioned on two sides of the driving wheel, teeth matched with the rotating gears are arranged on one side of the support, and the driving wheel is meshed with the lifting rack;

the top of roof is provided with places the case, and the inside of placing the case is provided with water tank and oxygen cabin, one side of device case is provided with the gasbag, and one side of gasbag be provided with the connecting pipe of water tank intercommunication, one side intercommunication of water tank has the pipeline that extends to push down the inside of subassembly, one side of oxygen cabin is provided with the outlet duct with the pipeline intercommunication, the opposite side of device case is provided with the negative pressure pump, and the end of breathing in of negative pressure pump is provided with the negative pressure pipe with push down the subassembly intercommunication.

Preferably, two of the rotating gears are respectively connected with the driving wheel through a linkage assembly, the linkage assembly comprises two pinions and a conveyor belt for driving and connecting the two pinions, and the radius of the rotating gears is at least one and a half times of that of the driving wheel.

Preferably, the outside rolling of wind-up roll has the parcel cloth, and the parcel cloth includes porous cotton and fixes the film at porous cotton lower extreme face, seted up the hole on the film, and the hole is circular structure, and the film is used for contacting the patient to get the limb, and the hole can expose the affected part on the patient limb, and the film of all the other positions department then can carry out attached sealing to normal skin around the limb affected part, guarantees its leakproofness, the centre gripping unit includes two sets of centre gripping subassemblies, and every centre gripping subassembly of group all includes two centre gripping rollers, and two centre gripping rollers are located the upper and lower both ends of parcel cloth respectively and carry out the centre gripping to the parcel cloth.

Preferably, driven subassembly is including fixing the driven rack at device case top and setting up at the inside driven round of driving wheel of device box, the inside rotation of device box is connected with the dwang, and the outside of dwang is provided with one-way bearing, assemble the outside at one-way bearing from the driving wheel, the dwang passes through the linkage subassembly and is connected with the dwang on one of them pinch roll.

Preferably, the cutting assembly comprises a fixed rod fixed at the top of the device box, and a first fixed box and a second fixed box fixed inside the device box, the first fixed box and the second fixed box are communicated through a linkage pipe, a first piston is arranged inside the first fixed box, the bottom of the first piston is fixedly connected with the top of the fixed rod, a second piston is arranged inside the second fixed box, a blade extending to the bottom of the second fixed box is arranged at the bottom of the second piston, and a cutter groove matched with the blade is arranged at the top of the fixed roller.

Preferably, the pushing assembly comprises an elastic block and meshes arranged at the bottom of the elastic block, the elastic block is of a hollow structure, and the elastic block is made of soft silicon rubber.

Preferably, the pipeline includes that first minute pipe and second divide the pipe, the top of roof is provided with fixed box, and the inside rotation of fixed box is connected with the pivot that runs through to the roof bottom, the outside of pivot evenly is provided with the flabellum, and the bottom fixedly connected with cam of pivot, the top of device box is provided with the cooperation piece with cam matched with, first minute pipe and second divide the pipe respectively with the inside intercommunication of fixed box.

Preferably, be provided with between roof and the device box and remove the subassembly, and remove the subassembly including fixing the installation piece in the roof bottom, and the spout has been seted up to the bottom of installation piece, the inside sliding connection of spout has the slider, and the bottom of slider and the top fixed connection of device box, one side of slider is connected with the elastic component, and the other end of elastic component is connected with the inside wall of spout.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention has soft and elastic placing cotton, when the affected limb of the patient is placed on the placing cotton, the placing cotton can wrap the lower half part of the affected limb of the patient, at the moment, the patient can exert proper force to enable the placing cotton and the lifting rack to descend so as to drive the driving wheel to rotate, under the action of the linkage assembly, the two rotating gears can rotate so as to enable the two supports to drive the top plate to descend, and the radius of the rotating gears is at least one and a half times of that of the driving wheel, so that after the driving wheel rotates for a certain number of turns, the rotating gears can also rotate for a certain number of turns, the radius of the rotating gears is longer, the rotating perimeter of the rotating gears is longer, the descending distance of the driven supports is longer, the descending speed of the top plate is faster than that of the lifting rack, and the patient can enable the wrapping cloth at the bottom of the top plate to be in contact with the wound surface on the affected limb of the patient by only slightly pressing the placing cotton, at the moment, the patient continues to exert force until the elastic block completely wraps the upper half part of the affected limb of the patient, so that the affected part on the affected limb of the patient is in a closed state, then the wrapping cloth is used for cleaning the affected part on the affected limb of the patient, and in sum, the clamping force on the affected limb can be automatically adjusted through the self force application of the patient, so that the wound surface treatment of the patient in a relatively comfortable environment is ensured, and the use is more convenient;

(2) the invention can extrude through the arranged air bag and inject air into the water chamber, so that disinfectant in the water chamber can be extruded into the elastic block through the pipeline and flows to the wrapping cloth through meshes at the bottom of the elastic block to be absorbed by the porous cotton on the wrapping cloth, so that the affected part on the affected limb of a patient can be disinfected and cleaned, meanwhile, the oxygen chamber is filled with oxygen which can enter the elastic block through the air outlet pipe, so that the oxygen can be in continuous contact with the affected part of the patient, tissue oxygen supply is increased, local cell proliferation is accelerated, tissue repair capacity is enhanced, capillary vessels of a wound surface can be expanded, blood flow resistance is reduced, blood flow speed is accelerated, tissue exudation is reduced, swelling is reduced, wound surface healing is accelerated, and in addition, the oxygen has inhibiting effect on gram negative bacteria and gram positive bacteria, thereby preventing or reducing localized infection;

(3) the invention can drive the first fixed box and the second fixed box to descend when the device box descends, because the fixed rod is fixed at the top of the device box, the fixed rod keeps unchanged in position, when the first fixed box descends, the first piston can relatively ascend, and further the air in the second fixed box is sucked into the first fixed box, so that the second piston in the second fixed box drives the blade to ascend, when the device box ascends, the blade descends, and simultaneously under the action of the one-way bearing, when the device box descends, the driven wheel rotates, the driven wheel does not cause the linkage component behind the driven wheel to move, when the device box ascends, the driven wheel rotates, so that the linkage component behind the driven wheel starts to move, and then the clamping roller in the clamping unit is driven to rotate, so that the wrapping cloth is dragged from left to right, when the device box ascends to the highest position, drag the stop, the blade also just in time with the sword groove meshing on the fixed roll this moment for wrapping up in cloth is cut off, accomplishes the automatic cutting-off treatment to the wrapping up in cloth that used before then, and the inside of collecting storage facility is fallen to the wrapping up in cloth after cutting off, and the clearance after the convenient to use need not the other people supplementary can be handled automatically, and it is more convenient to use.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a schematic view of the internal structure of embodiment 1 of the present invention;

FIG. 3 is a schematic view of the cutting assembly of the present invention;

FIG. 4 is a schematic view of the construction of the wrapping cloth of the present invention;

FIG. 5 is a schematic view of the internal structure of embodiment 2 of the present invention;

fig. 6 is a schematic view of the internal structure of the fixing box in embodiment 2 of the present invention.

In the figure: 1. a device case; 101. a motorized bin; 102. a storage bin; 103. a groove; 104. placing cotton; 2. a support; 3. a top plate; 4. a moving assembly; 5. a device cartridge; 6. pressing the assembly; 601. an elastic block; 602. mesh openings; 7. a wind-up roll; 8. a clamping unit; 9. a fixed roller; 10. wrapping cloth; 1001. porous cotton; 1002. a film; 1003. a hole; 11. a cutting assembly; 111. a first stationary box; 112. a second stationary box; 113. a linkage pipe; 114. a first piston; 115. fixing the rod; 116. a second piston; 117. a blade; 12. a driven assembly; 121. a driven rack; 122. a driven wheel; 13. a lifting rack; 14. a driving wheel; 15. a rotating gear; 16. teeth; 17. a linkage assembly; 18. a negative pressure pump; 19. a negative pressure tube; 20. placing a box; 2001. a water tank; 2002. an oxygen chamber; 21. an air bag; 22. a connecting pipe; 23. a pipeline; 231. a first branch pipe; 232. a second branch pipe; 24. a fixing box; 25. a rotating shaft; 26. a fan blade; 27. a cam; 28. and an air outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides an embodiment 1:

a household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wounds comprises a device box 1, wherein a motorized bin 101 and a storage bin 102 are arranged inside the device box 1, a groove 103 is formed in the middle of the top of the device box 1, two sides of the inner wall of the motorized bin 101 are connected with supports 2 extending to the outside of the device box 1 in a sliding mode, a top plate 3 is arranged on the top of each support 2, the bottom of the top plate 3 is connected with a device box 5, and a pressing component 6 is arranged in a concave position of the bottom of the device box 5;

the winding roller 7, the clamping unit 8, the fixed roller 9, the cutting assembly 11 and the driven assembly 12 are sequentially arranged in the device box 5 from left to right;

the interior of the groove 103 is provided with a placing cotton 104, the placing cotton 104 is of a cylindrical structure, the bottom of the placing cotton 104 is provided with a lifting rack 13 penetrating into the interior of the maneuvering bin 101, the interior of the maneuvering bin 101 is provided with a driving wheel 14 and two rotating gears 15, the two rotating gears 15 are respectively positioned at two sides of the driving wheel 14, one side of the support 2 is provided with teeth 16 matched with the rotating gears 15, and the driving wheel 14 is meshed with the lifting rack 13;

the top of the top plate 3 is provided with a placing box 20, a water tank 2001 and an oxygen tank 2002 are arranged inside the placing box 20, one side of the device box 1 is provided with an air bag 21, one side of the air bag 21 is provided with a connecting pipe 22 communicated with the water tank 2001, one side of the water tank 2001 is communicated with a pipeline 23 extending to the inside of the pressing component 6, one side of the oxygen tank 2002 is provided with an air outlet pipe 28 communicated with the pipeline 23, the other side of the device box 1 is provided with a negative pressure pump 18, and the air suction end of the negative pressure pump 18 is provided with a negative pressure pipe 19 communicated with the pressing component 6.

Referring to fig. 2, the two rotating gears 15 are respectively connected with the driving wheel 14 through a linkage assembly 17, the linkage assembly 17 includes two pinions and a belt for driving and connecting the two pinions, and the radius of the rotating gear 15 is at least one and a half times of the radius of the driving wheel 14.

Please refer to fig. 2, the wrapping cloth 10 is wrapped outside the wrapping roller 7, the wrapping cloth 10 includes a porous cotton 1001 and a film 1002 fixed on the lower end surface of the porous cotton 1001, a hole 1003 is formed on the film 1002, the hole 1003 is of a circular structure, the film 1002 is used for contacting the affected limb of the patient, the hole 1003 can expose the affected part on the affected limb of the patient, the films at other positions can attach and seal the normal skin around the affected part of the affected limb, so as to ensure the sealing performance of the affected part, the clamping unit 8 includes two sets of clamping components, each set of clamping components includes two clamping rollers, and the two clamping rollers are respectively located at the upper and lower ends of the wrapping cloth 10 and clamp the wrapping cloth 10.

Please refer to fig. 2, the driven assembly 12 includes a driven rack 121 fixed on the top of the device box 1 and a driven wheel 122 disposed inside the device box 5, the inside of the device box 5 is rotatably connected with a rotating rod, and the outside of the rotating rod is provided with a one-way bearing, the driven wheel 122 is assembled outside the one-way bearing, and the rotating rod is connected with the rotating rod on one of the clamping rollers through the linkage assembly 17.

Please refer to fig. 2 and 3, the cutting assembly 11 includes a fixing rod 115 fixed on the top of the device box 1, and a first fixing box 111 and a second fixing box 112 fixed inside the device box 5, the first fixing box 111 and the second fixing box 112 are communicated through a linkage pipe 113, a first piston 114 is disposed inside the first fixing box 111, the bottom of the first piston 114 is fixedly connected with the top of the fixing rod 115, a second piston 116 is disposed inside the second fixing box 112, the bottom of the second piston 116 is provided with a blade 117 extending to the bottom of the second fixing box 112, and the top of the fixing roller 9 is provided with a knife slot matched with the blade 117.

Please refer to fig. 2, the pressing member 6 includes an elastic block 601 and a mesh 602 disposed at the bottom of the elastic block 601, the elastic block 601 is a hollow structure, and the elastic block 601 is made of flexible silicon rubber.

Referring to fig. 5 and 6, the present invention further provides an embodiment 2:

this example differs from example 1 in that: pipeline 23 includes that first minute pipe 231 and second divide pipe 232, the top of roof 3 is provided with fixed box 24, and the inside of fixed box 24 is rotated and is connected with the pivot 25 that runs through to roof 3 bottom, the outside of pivot 25 evenly is provided with flabellum 26, and the bottom fixedly connected with cam 27 of pivot 25, the top of device box 5 is provided with the cooperation piece with cam 27 matched with, first minute pipe 231 and second divide pipe 232 respectively with the inside intercommunication of fixed box 24, be provided with between roof 3 and the device box 5 and remove subassembly 4, and remove subassembly 4 including fixing the installation piece in roof 3 bottom, and the bottom of installation piece has seted up the spout, the inside sliding connection of spout has the slider, and the bottom of slider and the top fixed connection of device box 5, one side of slider is connected with the elastic component, and the other end of elastic component is connected with the inside wall of spout.

In this embodiment, the antiseptic solution is when fixed box 24, can make the inside flabellum 26 of fixed box 24 rotate, and flabellum 26 drives pivot 25 and cam 27 and rotates, and cam 27's rotation can constantly extrude the cooperation piece on the device box 5 for carry out the beat about device box 5, thereby make wrapping cloth 10 carry out the beat, then can control the affected limb of patient and clean, clean effect is better.

The working principle is as follows: when the device is used, a patient places a diseased limb on the placing cotton 104, so that the affected part on the diseased limb is aligned with the pressing component 6, the placing cotton 104 is soft enough, the placing cotton 104 can wrap the lower half part of the diseased limb of the patient, at the moment, the patient can exert proper force to lower the placing cotton 104 and the lifting rack 13 and further drive the driving wheel 14 to rotate, under the action of the linkage component 17, the two rotating gears 15 can rotate, so that the two supports 2 drive the top plate 3 to descend, because the radius of the rotating gear 15 is at least one point five times of the radius of the driving wheel 14, after the driving wheel 14 rotates for a certain number of turns, the rotating gear 15 also rotates for a certain number of turns, the radius of the rotating gear 15 is longer, the rotating perimeter of the rotating gear is longer, the descending distance of the driven support 2 is longer, so that the descending speed of the top plate 3 is faster than the descending speed of the lifting rack 13, further, the patient can make the wrapping cloth 10 at the bottom of the top plate 3 contact with the wound surface on the affected limb of the patient by slightly pressing the placing cotton 104, at this time, the patient continues to exert force until the elastic block 601 completely wraps the upper half part of the affected limb of the patient, so that the affected part on the affected limb of the patient is in a sealed state, then the patient or medical staff starts to squeeze the air bag 21, and then can inject air into the water chamber 2001, so that the disinfectant inside the water chamber 2001 can be squeezed into the elastic block 601 through the pipeline 23, and flows onto the wrapping cloth 10 through the mesh 602 at the bottom of the elastic block 601 to be absorbed by the wrapping cloth 10, meanwhile, the oxygen chamber 2002 is filled with oxygen, and can enter the elastic block 601 through the air outlet pipe 28, so that the oxygen can be continuously contacted with the affected part of the patient, so as to increase the oxygen supply for the tissues, accelerate the local cell proliferation, and enhance the tissue repair capability, meanwhile, the capillary vessel of the wound surface can be expanded, the blood flow resistance is reduced, the blood flow speed is accelerated, the tissue exudation is reduced, the swelling is reduced, and the wound healing is accelerated, in addition, oxygen has the inhibiting effect on gram negative bacteria and gram positive bacteria, so that the local infection is prevented or reduced, after the cleaning is finished, the patient stops extruding the air bag 21, then the negative pressure pump is started, so that the negative pressure pump 18 starts to work, and the wound pus in the affected part on the affected limb of the patient is sucked up, due to the 10-bit porous structure of the wrapping cloth, pollutants such as the pus can be absorbed in the wrapping cloth, the negative pressure pump 18 is closed after the negative pressure treatment is finished, then the patient lifts the hand, the cotton 104 is placed under the action of the bottom spring to restore the original position, so that the top plate 3 is lifted and restored to the original position, before, when the device box 5 is descended, the first fixing box 111 and the second fixing box 112 can be driven to descend, and the fixing rod 115 is fixed at the top of the device box 1, therefore, the fixed rod 115 keeps the position unchanged, when the first fixed box 111 descends, the first piston 114 can be relatively ascended, so that the air in the second fixed box 112 is sucked into the first fixed box 111, the second piston 116 in the second fixed box 112 drives the blade 117 to ascend, when the device box 5 ascends, the blade 117 descends again, and when the device box 5 descends under the action of the one-way bearing, the driven wheel 122 rotates to prevent the linkage assembly 17 behind the driven wheel 122 from moving, when the device box 5 ascends, the driven wheel 122 rotates to start the linkage assembly 17 behind the driven wheel to drive the clamping roller in the clamping unit 8 to rotate, so that the wrapping cloth 10 is dragged from left to right, when the device box 5 ascends to the highest position, the dragging stops, and the blade 117 is also just meshed with the knife slot on the fixed roller 9, so that the wrapping cloth 10 is cut, then, the automatic cutting treatment of the wrapping cloth 10 used previously is completed, and the cut wrapping cloth 10 falls into the storage bin 102, so that the wrapping cloth is convenient to clean after use.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a domestic negative pressure oxygen therapy device for daily clean physiotherapy of chronic surface of a wound, includes device case (1), its characterized in that: a motorized bin (101) and a storage bin (102) are arranged inside the device box (1), a groove (103) is formed in the middle of the top of the device box (1), two sides of the inner wall of the motorized bin (101) are connected with supports (2) extending to the outside of the device box (1) in a sliding mode, a top plate (3) is arranged on the top of each support (2), the bottom of each top plate (3) is connected with a device box (5), and a pressing assembly (6) is arranged in a concave position of the bottom of each device box (5);

a winding roller (7), a clamping unit (8), a fixed roller (9), a cutting assembly (11) and a driven assembly (12) are sequentially arranged inside the device box (5) from left to right;

the cotton placing device is characterized in that cotton placing (104) is arranged inside the groove (103), a lifting rack (13) penetrating into the motorized bin (101) is arranged at the bottom of the cotton placing (104), a driving wheel (14) and two rotating gears (15) are arranged inside the motorized bin (101), the two rotating gears (15) are respectively located on two sides of the driving wheel (14), teeth (16) matched with the rotating gears (15) are arranged on one side of the support (2), and the driving wheel (14) is meshed with the lifting rack (13);

the top of roof (3) is provided with places case (20), and the inside of placing case (20) is provided with water tank (2001) and oxygen cabin (2002), one side of device case (1) is provided with gasbag (21), and one side of gasbag (21) is provided with connecting pipe (22) with water tank (2001) intercommunication, one side intercommunication of water tank (2001) has pipeline (23) that extend to push down inside subassembly (6), one side of oxygen cabin (2002) is provided with outlet duct (28) with pipeline (23) intercommunication, the opposite side of device case (1) is provided with negative pressure pump (18), and the end of breathing in of negative pressure pump (18) is provided with negative pressure pipe (19) with push down subassembly (6) intercommunication.

2. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 1, is characterized in that: two the running gear (15) are connected with action wheel (14) through linkage subassembly (17) respectively, linkage subassembly (17) include two pinions and are used for the conveyer belt of drive connection two pinions, the radius of running gear (15) is one and a little five times of action wheel (14) radius at least.

3. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 1, is characterized in that: wrapping cloth (10) is wrapped up in the outside of wind-up roll (7), and wrapping cloth (10) include porous cotton (1001) and fix film (1002) at terminal surface under porous cotton (1001), hole (1003) have been seted up on film (1002), centre gripping unit (8) include two sets of centre gripping subassemblies, and every group centre gripping subassembly all includes two centre gripping rollers.

4. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 4, is characterized in that: driven subassembly (12) are including fixing driven rack (121) at device case (1) top and setting up at device box (5) inside from driving wheel (122), the inside rotation of device box (5) is connected with the dwang, and the outside of dwang is provided with one-way bearing, assemble the outside at one-way bearing from driving wheel (122), the dwang passes through linkage subassembly (17) and is connected with the bull stick on one of them centre gripping roller.

5. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 1, is characterized in that: the cutting assembly (11) comprises a fixing rod (115) fixed to the top of the device box (1) and a first fixing box (111) and a second fixing box (112) fixed to the inside of the device box (5), the first fixing box (111) and the second fixing box (112) are communicated through a linkage pipe (113), a first piston (114) is arranged inside the first fixing box (111), the bottom of the first piston (114) is fixedly connected with the top of the fixing rod (115), a second piston (116) is arranged inside the second fixing box (112), a blade (117) extending to the bottom of the second fixing box (112) is arranged at the bottom of the second piston (116), and a cutter groove matched with the blade (117) is formed in the top of the fixing roller (9).

6. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 1, is characterized in that: the pressing component (6) comprises an elastic block (601) and a mesh (602) arranged at the bottom of the elastic block (601), the elastic block (601) is of a hollow structure, and the elastic block (601) is made of flexible silicon rubber.

7. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 1, is characterized in that: pipeline (23) are including first minute pipe (231) and second minute pipe (232), the top of roof (3) is provided with fixed box (24), and the inside of fixed box (24) is rotated and is connected with pivot (25) that run through to roof (3) bottom, the outside of pivot (25) evenly is provided with flabellum (26), and the bottom fixedly connected with cam (27) of pivot (25), the top of device box (5) is provided with the cooperation piece with cam (27) matched with, first minute pipe (231) and second minute pipe (232) communicate with the inside of fixed box (24) respectively.

8. The household negative pressure oxygen therapy device for daily cleaning and physiotherapy of chronic wound surfaces as claimed in claim 1, is characterized in that: be provided with between roof (3) and device box (5) and remove subassembly (4), and remove subassembly (4) including fixing the installation piece in roof (3) bottom, and the spout has been seted up to the bottom of installation piece, the inside sliding connection of spout has the slider, and the bottom of slider and the top fixed connection of device box (5), one side of slider is connected with the elastic component, and the other end of elastic component is connected with the inside wall of spout.