Dressing change equipment

Abstract

The utility model discloses dressing change equipment which comprises a dressing change frame, a movable cavity and a lifting cavity are formed in the dressing change frame, a movable bottom plate is arranged at the bottom of the interior of the movable cavity, universal wheels are connected to the two sides of the bottom of the movable bottom plate, and hydraulic oil cylinders and fixed guide rods are arranged on the two sides of the upper portion of the movable bottom plate. And a lifting column is arranged in the middle of the interior of the lifting cavity, an inner threaded sleeve is connected to the bottom of the interior of the lifting column, a lifting lead screw is arranged in the inner threaded sleeve in a penetrating mode, and an input shaft of the lifting lead screw is connected with a stepping motor. The supporting sliding sleeve can be pushed to slide on the fixing sliding rod, the transverse position of the supporting sliding sleeve on the fixing sliding rod can be changed, the supporting sliding sleeve can be adjusted to the proper position, then the fixing screw rod is screwed into the fixing screw hole, the positions of the fixing sliding rod and the supporting sliding sleeve can be limited, and the distance between the two lifting plates can be changed. And the lifting plate can be adjusted to a proper position so as to provide lifting support for the diabetic foot.

Description

Technical Field

[0001] The utility model relates to the technical field of dressing change, in particular to a dressing change device. Background Art

[0002] Diabetic foot refers to a disease state in which ulcers and gangrene occur in the feet of diabetic patients due to neuropathy, which reduces the protective function of the lower limbs, and macrovascular and microvascular lesions, which cause insufficient arterial perfusion and microcirculatory disorders. Diabetic foot is a serious complication of diabetes and one of the important causes of disability and even death in diabetic patients. During the treatment of diabetic foot, dressing change equipment can be used to provide a dressing change support position for the patient's diabetic foot, which is convenient for medical staff to clean and disinfect the diabetic foot and change the dressing for the patient's diabetic foot.

[0003] In the prior art, a diabetic foot dressing changing device with publication number CN211244300U is disclosed, and the utility model discloses a diabetic foot dressing changing device, comprising a device body and a bottom plate, a bottom plate is arranged at the bottom of the device body, a partition is arranged near the middle position in the device body, a nut is arranged on one side of the device body, one end of the nut is connected to a first rotating rod, the other end of the first rotating rod is passed into the device body, the other end of the first rotating rod is connected to a first bevel gear, a second rotating rod is arranged on one side of the first bevel gear, a second bevel gear is installed on the bottom of the second rotating rod, the second bevel gear is perpendicular to and meshed with the first bevel gear, the bottom of the second rotating rod is movably connected to the inner wall of the device body through a bearing sleeve, the top of the second rotating rod passes through the partition, the top of the second rotating rod is connected to a screw rod, a nut is threadedly connected to the screw rod, a sliding rod is welded to the inner wall of one side of the device body, and a sliding sleeve is sleeved on the sliding rod.

[0004] Generally, when a dressing changing device assists in dressing changing of a diabetic foot, it provides support for the diabetic foot through the rubber blocks on the legs and changes the support height of the diabetic foot through a screw rod. However, after the dressing of the diabetic foot is changed, or the diabetic foot is worn or damaged due to long-term use, it is not convenient to remove the support board of the diabetic foot, and the support board needs to be removed and disinfected separately, or repaired.

[0005] In view of the above problems, we propose a dressing changing device. Utility Model Content

[0006] The purpose of the utility model is to provide a dressing changing device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A dressing changing device comprises a dressing changing rack, wherein a movable cavity and a lifting cavity are provided inside the dressing changing rack, a movable bottom plate is provided at the bottom of the movable cavity, universal wheels are connected to both sides of the bottom of the movable bottom plate, and hydraulic cylinders and fixed guide rods are provided on both sides above the movable bottom plate;

[0009] A lifting column is arranged in the middle of the lifting cavity, an internal threaded sleeve is connected to the bottom of the lifting column, a lifting screw rod is passed through the internal threaded sleeve, and a stepping motor is connected to the input shaft of the lifting screw rod.

[0010] Preferably, the extended end of the hydraulic cylinder and the bottom of the fixed guide rod are both fixedly connected to the movable bottom plate.

[0011] Preferably, both sides of the lifting column are connected with connecting plates, both sides of the inner wall of the lifting cavity are provided with guide grooves, and the guide grooves are provided with guide sliders inside;

[0012] The lifting column is fixedly connected to the internal threaded sleeve, and one end of the lifting screw passes through the internal threaded sleeve and is fixedly connected to the input shaft of the stepper motor. The lifting column is fixedly connected to one side of the connecting plate, and the other side of the connecting plate is fixedly connected to the guide slider, and the guide slider is partially adapted to the guide groove.

[0013] Preferably, a mounting groove is provided at the upper end of the supporting column, a mounting block is inserted into the mounting groove, limiting springs and limiting rods are provided on both sides of the mounting block, and limiting holes are provided on both sides of the mounting groove.

[0014] Preferably, the mounting block is inserted into the mounting groove, the mounting block is elastically connected to one end of the limiting plug rod via a limiting spring, and the other end of the limiting plug rod is inserted into the limiting socket.

[0015] Preferably, the upper end of the mounting block is connected to a cross frame, a fixed slide rod is arranged inside the cross frame, a plurality of fixing screw holes are opened on the surface of the fixed slide rod, support sleeves are sleeved on both sides of the fixed slide rod, and a fixing screw is passed through the front end of the support sleeve.

[0016] Preferably, the mounting block is fixedly connected to the cross frame, the cross frame is fixedly connected to the fixed slide rod, the fixed slide rod passes through the interior of the supporting slide sleeve, the fixed slide rod and the supporting slide sleeve are connected through fixed screw holes and fixed screws, and several of the fixed screw holes are evenly distributed on the surface of the fixed slide rod.

[0017] Preferably, the top of the supporting sleeve is connected to a mounting slot plate, a supporting bottom block is inserted into the mounting slot plate, locking holes are provided on both sides of the inner wall of the mounting slot plate, a bidirectional screw rod is arranged inside the supporting bottom block, the input end of the bidirectional screw rod is connected to a handle, two screw rod sleeves are arranged on the outside of the bidirectional screw rod, the bottom of the screw rod sleeve is connected to a connecting block, the bottom of the connecting block is connected to a locking rod, one end of the locking rod is inserted into the locking hole, and the other end is connected to a locking spring.

[0018] Preferably, the support sleeve is fixedly connected to the mounting slot plate, the bottom of the support bottom block is inserted into the interior of the mounting slot plate, the support bottom block is elastically connected to the locking rod through a locking spring, one end of the locking rod is inserted into the interior of the locking socket, the locking rod and the screw sleeve are fixedly connected through a connecting block, the bidirectional screw passes through the interior of the screw sleeve, and the two parts of the bidirectional screw have opposite threads.

[0019] Preferably, a lifting plate is fixed to the top of the supporting bottom block, and a lifting pad is bonded to the top of the lifting plate.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model can insert the installation block into the installation groove at the top of the lifting column, and align the limit plug rod with the limit plug hole. The limit spring can be used to apply elastic force to the limit plug rod, and one end of the limit plug rod can be inserted into the limit plug hole to limit the position of the installation block and install the installation block into the installation groove. Conversely, the limit plug hole can be pushed to compress the limit spring, and one end of the limit plug rod can be separated from the limit plug hole, so that the installation block can be removed, which can improve the convenience of disassembling and assembling the installation block.

[0022] The utility model can push the supporting sliding sleeve to slide on the fixed sliding rod, can change the lateral position of the supporting sliding sleeve on the fixed sliding rod, can adjust the supporting sliding sleeve to a suitable position, and then screw the fixing screw rod into the inside of the fixing screw hole, so as to limit the position of the fixed sliding rod and the supporting sliding sleeve.

[0023] The utility model can insert the bottom of the supporting bottom block into the interior of the mounting groove plate, and the locking plug rod can be aligned with the locking socket. The locking spring applies elastic force to the locking plug rod, and the two screw rod sleeves are pushed away from each other by rotating the bidirectional screw rod by the handle. Since the locking plug rod and the screw rod sleeve are fixedly connected by the connecting block, the screw rod sleeve can push the locking plug rod to move synchronously through the connecting block, and one end of the locking plug rod can be inserted into the locking socket. The position of the mounting groove plate and the supporting bottom block can be limited to complete the installation of the supporting bottom block. Conversely, the handle can be rotated in the opposite direction, and the screw rod sleeve, the connecting block and the locking plug rod can be pushed to move in the opposite direction by the bidirectional screw rod. One end of the locking plug rod compresses the locking spring, and the other end is separated from the locking socket, so that the supporting bottom block can be removed, which can improve the speed of disassembling and assembling the supporting bottom block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 3 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at B in the middle;

[0027] Figure 4 For this utility model Figure 1 Schematic diagram of the partial enlarged structure at point C in the middle.

[0028] In the figure:

[0029] 1. Dressing rack; 2. Movable cavity; 3. Lifting cavity; 4. Movable bottom plate; 5. Universal wheel; 6. Hydraulic cylinder; 7. Fixed guide rod; 8. Lifting column; 9. Internal threaded sleeve; 10. Lifting screw; 11. Stepping motor; 12. Connecting plate; 13. Guide slider; 14. Guide slide groove; 15. Mounting groove; 16. Mounting block; 17. Limit spring; 18. Limit plug rod; 19. Limit plug hole; 20. Cross frame; 21. Fixed slide rod; 22. Fixed screw hole; 23. Support sleeve; 24. Fixed screw; 25. Mounting groove plate; 26. Support bottom block; 27. Lifting plate; 28. Lifting pad; 29. ​​Bidirectional screw; 30. Handle; 31. Screw sleeve; 32. Connecting block; 33. Locking plug rod; 34. Locking spring; 35. Locking plug hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] See also Figure 1-4 The utility model provides a technical solution: a dressing changing device, including a dressing changing rack 1, wherein a movable cavity 2 and a lifting cavity 3 are provided inside the dressing changing rack 1, a movable bottom plate 4 is provided at the bottom of the movable cavity 2, universal wheels 5 are connected to both sides of the bottom of the movable bottom plate 4, hydraulic cylinders 6 and fixed guide rods 7 are provided on both sides above the movable bottom plate 4, and the extended end of the hydraulic cylinder 6 and the bottom of the fixed guide rod 7 are fixedly connected to the movable bottom plate 4.

[0032] Specifically, when moving the dressing changing equipment, the movable bottom plate 4 and the universal wheel 5 can be pushed to move by the hydraulic cylinder 6, and the fixed guide rod 7 can move synchronously with the movable bottom plate 4, so as to avoid the movable bottom plate 4 from tilting, and the universal wheel 5 can be brought into contact with the ground and lift up the dressing changing rack 1, so that the dressing changing rack 1 can be lifted. At this time, a thrust can be applied to the dressing changing rack 1, and the universal wheel 5 provides rolling support for the dressing changing equipment, so that the dressing changing equipment can be moved to a suitable position, and then the movable bottom plate 4 and the universal wheel 5 can be pulled in the opposite direction by the hydraulic cylinder 6 to move, so that the movable bottom plate 4 and the universal wheel 5 can be pulled back into the interior of the movable cavity 2, and the universal wheel 5 can be separated from the ground, so that the dressing changing rack 1 can stand on the ground.

[0033] like Figure 1 As shown, a lifting column 8 is provided in the middle part of the lifting chamber 3, and an internal threaded sleeve 9 is connected to the bottom of the lifting column 8. A lifting screw 10 is passed through the internal threaded sleeve 9, and the input shaft of the lifting screw 10 is connected to a stepping motor 11. The lifting column 8 is fixedly connected to the internal threaded sleeve 9, and one end of the lifting screw 10 passes through the internal threaded sleeve 9 and is fixedly connected to the input shaft of the stepping motor 11.

[0034] Specifically, the stepper motor 11 can drive the lifting screw 10 to rotate, and the lifting screw 10 can push the internal threaded sleeve 9 and the lifting column 8 to move synchronously, and the extension length of the lifting column 8 can be changed. The lifting column 8 can push the cross frame 20 and the lifting plate 27 to move, and the height of the lifting plate 27 can be changed to adapt to the placement of different users' feet.

[0035] like Figure 1 As shown, connecting plates 12 are connected to both sides of the lifting column 8, guide grooves 14 are opened on both sides of the inner wall of the lifting chamber 3, and guide sliders 13 are arranged inside the guide grooves 14. The lifting column 8 is fixedly connected to one side of the connecting plate 12, and the other side of the connecting plate 12 is fixedly connected to the guide slider 13, and the guide slider 13 is partially adapted to the guide groove 14.

[0036] Specifically, when the lifting column 8 moves, the lifting column 8, the connecting plate 12 and the guide slider 13 move synchronously, and the guide slider 13 slides inside the guide slot 14. The guide slot 14 can limit the moving trajectory of the guide slider 13 and prevent the lifting column 8 from rotating, so that the lifting column 8 maintains vertical movement.

[0037] like Figure 1 and Figure 3 As shown, a mounting groove 15 is provided at the upper end of the supporting column 8, a mounting block 16 is inserted into the mounting groove 15, limiting springs 17 and limiting rods 18 are provided on both sides of the mounting block 16, limiting holes 19 are provided on both sides of the mounting groove 15, the mounting block 16 is inserted into the mounting groove 15, the mounting block 16 is elastically connected to one end of the limiting rod 18 through the limiting spring 17, and the other end of the limiting rod 18 is inserted into the limiting hole 19.

[0038] Specifically, the mounting block 16 can be inserted into the mounting groove 15 at the top of the lifting column 8, and the limiting rod 18 can be aligned with the limiting socket 19. The limiting spring 17 can act on the limiting rod 18 with elastic force, and one end of the limiting rod 18 can be inserted into the limiting socket 19 to limit the position of the mounting block 16, and the mounting block 16 can be installed into the mounting groove 15. Conversely, the limiting socket 19 can be pushed to compress the limiting spring 17, and one end of the limiting rod 18 can be separated from the limiting socket 19, so that the mounting block 16 can be removed, which can improve the convenience of disassembling and assembling the mounting block 16.

[0039] like Figure 1 and Figure 4 As shown, the upper end of the mounting block 16 is connected to a cross frame 20, a fixed slide bar 21 is arranged inside the cross frame 20, a plurality of fixed screw holes 22 are opened on the surface of the fixed slide bar 21, support sleeves 23 are sleeved on both sides of the fixed slide bar 21, a fixed screw 24 is passed through the front end of the support sleeve 23, the mounting block 16 is fixedly connected to the cross frame 20, the cross frame 20 is fixedly connected to the fixed slide bar 21, the fixed slide bar 21 passes through the inside of the support sleeve 23, the fixed slide bar 21 and the support sleeve 23 are connected through the fixed screw holes 22 and the fixed screws 24, and a plurality of fixed screw holes 22 are evenly distributed on the surface of the fixed slide bar 21.

[0040] Specifically, the supporting sleeve 23 can be pushed to slide on the fixed slide rod 21, the lateral position of the supporting sleeve 23 on the fixed slide rod 21 can be changed, the supporting sleeve 23 can be adjusted to a suitable position, and then the fixing screw 24 can be screwed into the inside of the fixing screw hole 22 to limit the position of the fixed slide rod 21 and the supporting sleeve 23.

[0041] like Figure 1 and Figure 4As shown, the top of the support sleeve 23 is connected to the mounting slot plate 25, the support sleeve 23 is fixedly connected to the mounting slot plate 25, the inside of the mounting slot plate 25 is inserted with a support bottom block 26, the bottom of the support bottom block 26 is inserted into the inside of the mounting slot plate 25, and locking holes 35 are provided on both sides of the inner wall of the mounting slot plate 25. A bidirectional screw rod 29 is arranged inside the support bottom block 26, and a handle 30 is connected to the input end of the bidirectional screw rod 29. The outside of the bidirectional screw rod 29 is provided with two screw rod sleeves 31, and the screw rod sleeves 31 are provided with a handle 30. The bottom is connected to a connecting block 32, and the bottom of the connecting block 32 is connected to a locking rod 33. The locking rod 33 is fixedly connected to the screw sleeve 31 through the connecting block 32. The bidirectional screw 29 passes through the interior of the screw sleeve 31. The two parts of the bidirectional screw 29 have opposite threads. One end of the locking rod 33 is inserted into the interior of the locking socket 35, and the other end is connected to a locking spring 34. The supporting bottom block 26 is elastically connected to the locking rod 33 through the locking spring 34, and one end of the locking rod 33 is inserted into the interior of the locking socket 35.

[0042] The locking rod 33 is pressed against the locking nut 35 to release the locking spring 34, and the other end is separated from the locking nut 35, so that the support bottom block 26 can be removed.

[0043] like Figure 1 As shown, a lifting plate 27 is fixed to the top of the supporting bottom block 26 , and a lifting pad 28 is bonded to the top of the lifting plate 27 .

[0044] Specifically, the diabetic foot can be placed on the lifting board 27, and the lifting board 27 and the lifting pad 28 provide a lifting position for the patient's diabetic foot.

[0045] Working principle:

[0046] First, the mounting block 16 can be inserted into the mounting groove 15 at the top of the lifting column 8, and the limiting rod 18 can be aligned with the limiting socket 19. The limiting spring 17 can act on the limiting rod 18, and one end of the limiting rod 18 can be inserted into the limiting socket 19 to limit the position of the mounting block 16. The mounting block 16 is installed in the mounting groove 15. Then, the bottom of the supporting bottom block 26 can be inserted into the mounting groove plate 25, and the locking rod 33 can be aligned with the locking socket 3 5, the locking spring 34 applies elastic force to the locking rod 33, and the handle 30 rotates the bidirectional screw rod 29 to push the two screw rod sleeves 31 away from each other. Since the locking rod 33 and the screw rod sleeve 31 are fixedly connected through the connecting block 32, the screw rod sleeve 31 can push the locking rod 33 to move synchronously through the connecting block 32, and one end of the locking rod 33 can be inserted into the locking insertion hole 35, so as to limit the position of the installation slot plate 25 and the support bottom block 26, and complete the installation of the support bottom block 26;

[0047] Secondly, when moving the dressing change equipment, the movable bottom plate 4 and the universal wheel 5 can be pushed to move by the hydraulic cylinder 6, and the fixed guide rod 7 can move synchronously with the movable bottom plate 4, so as to avoid the movable bottom plate 4 from tilting, and the universal wheel 5 can be brought into contact with the ground, and the dressing change rack 1 can be lifted up, and at this time, a thrust can be applied to the dressing change rack 1, and the universal wheel 5 provides rolling support for the dressing change equipment, so that the dressing change equipment can be moved to a suitable position, and then the movable bottom plate 4 and the universal wheel 5 can be pulled in the opposite direction by the hydraulic cylinder 6 to move, so that the movable bottom plate 4 and the universal wheel 5 can be pulled back into the interior of the movable cavity 2, and the universal wheel 5 can be separated from the ground, so that the dressing change rack 1 can stand on the ground;

[0048] Secondly, the support sleeve 23 can be pushed to slide on the fixed slide bar 21, the lateral position of the support sleeve 23 on the fixed slide bar 21 can be changed, the support sleeve 23 can be adjusted to a suitable position, and then the fixing screw 24 is screwed into the inside of the fixing screw hole 22, the positions of the fixed slide bar 21 and the support sleeve 23 can be limited, and the two lifting plates 27 can be adjusted to a suitable spacing, and then the diabetic foot is placed on the lifting plate 27;

[0049] Then, the stepper motor 11 can drive the lifting screw 10 to rotate, and the lifting screw 10 can push the internal threaded sleeve 9 and the lifting column 8 to move synchronously, and the extension length of the lifting column 8 can be changed. The lifting column 8 can push the cross frame 20 and the lifting plate 27 to move, and the height of the lifting plate 27 can be changed to push the diabetic foot to a suitable position.

[0050] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dressing change device, comprising a dressing change rack (1), characterized in that: The dressing rack (1) is provided with a movable chamber (2) and a lifting chamber (3) inside, a movable bottom plate (4) is provided at the bottom of the movable chamber (2), universal wheels (5) are connected to both sides of the bottom of the movable bottom plate (4), and hydraulic cylinders (6) and fixed guide rods (7) are provided on both sides above the movable bottom plate (4); A lifting column (8) is arranged in the middle of the lifting chamber (3), an internal threaded sleeve (9) is connected to the bottom of the lifting column (8), a lifting screw (10) is passed through the internal threaded sleeve (9), and a stepping motor (11) is connected to the input shaft of the lifting screw (10); The upper end of the supporting column (8) is provided with a mounting groove (15), a mounting block (16) is inserted into the mounting groove (15), limiting springs (17) and limiting plug rods (18) are provided on both sides of the mounting block (16), and limiting plug holes (19) are provided on both sides of the mounting groove (15).

2. A dressing changing device according to claim 1, characterized in that: The extended end of the hydraulic cylinder (6) and the bottom of the fixed guide rod (7) are both fixedly connected to the movable bottom plate (4).

3. A dressing changing device according to claim 1, characterized in that: Both sides of the lifting column (8) are connected to connecting plates (12), both sides of the inner wall of the lifting chamber (3) are provided with guide grooves (14), and the guide grooves (14) are provided with guide sliders (13) inside. The lifting column (8) is fixedly connected to the internal threaded sleeve (9), one end of the lifting screw (10) passes through the internal threaded sleeve (9) and is fixedly connected to the input shaft of the stepping motor (11), the lifting column (8) is fixedly connected to one side of the connecting plate (12), the other side of the connecting plate (12) is fixedly connected to the guide slider (13), and the guide slider (13) is partially adapted to the guide groove (14).

4. A dressing changing device according to claim 1, characterized in that: The mounting block (16) is inserted into the mounting groove (15), the mounting block (16) is elastically connected to one end of the limiting plug rod (18) via a limiting spring (17), and the other end of the limiting plug rod (18) is inserted into the limiting plug hole (19).

5. A dressing changing device according to claim 4, characterized in that: The upper end of the mounting block (16) is connected to a cross frame (20), a fixed slide rod (21) is arranged inside the cross frame (20), a surface of the fixed slide rod (21) is provided with a plurality of fixed screw holes (22), both sides of the fixed slide rod (21) are sleeved with supporting sleeves (23), and a fixing screw rod (24) is passed through the front end of the supporting sleeve (23).

6. A dressing changing device according to claim 5, characterized in that: The mounting block (16) is fixedly connected to the cross frame (20), the cross frame (20) is fixedly connected to the fixed slide rod (21), the fixed slide rod (21) passes through the interior of the supporting slide sleeve (23), the fixed slide rod (21) and the supporting slide sleeve (23) are connected via a fixed screw hole (22) and a fixed screw rod (24), and a plurality of the fixed screw holes (22) are evenly distributed on the surface of the fixed slide rod (21).

7. A dressing changing device according to claim 6, characterized in that: The top of the support sleeve (23) is connected to a mounting slot plate (25), a support bottom block (26) is inserted into the mounting slot plate (25), locking sockets (35) are provided on both sides of the inner wall of the mounting slot plate (25), a bidirectional screw rod (29) is provided inside the support bottom block (26), an input end of the bidirectional screw rod (29) is connected to a handle (30), two screw rod sleeves (31) are sleeved on the outside of the bidirectional screw rod (29), the bottom of the screw rod sleeve (31) is connected to a connecting block (32), the bottom of the connecting block (32) is connected to a locking plug rod (33), one end of the locking plug rod (33) is inserted into the locking socket (35), and the other end is connected to a locking spring (34).

8. A dressing changing device according to claim 7, characterized in that: The support sleeve (23) is fixedly connected to the mounting groove plate (25), the bottom of the support bottom block (26) is inserted into the interior of the mounting groove plate (25), the support bottom block (26) is elastically connected to the locking plug rod (33) via a locking spring (34), one end of the locking plug rod (33) is inserted into the interior of the locking plug hole (35), the locking plug rod (33) is fixedly connected to the screw sleeve (31) via a connecting block (32), the bidirectional screw rod (29) passes through the interior of the screw sleeve (31), and the two parts of the bidirectional screw rod (29) have opposite threads.

9. A dressing changing device according to claim 8, characterized in that: A lifting plate (27) is fixed to the top of the supporting bottom block (26), and a lifting pad (28) is bonded to the top of the lifting plate (27).

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