Dressing change cart

Abstract

The invention discloses a dressing change cart, and particularly relates to the technical field of medical instruments, the dressing change cart comprises a bottom plate, a holding table and a main operating rod; the main operating rod is mounted on the bottom plate and is provided with a circular locking piece for controlling lifting; the main operating rod is rotationally connected with a mechanical arm through a circular locking piece, and the other end of the mechanical arm is rotationally connected with the bottom end of the hand holding table. A ratchet mechanism for limiting the rotation of the mechanical arm is arranged on the main operating rod; the main operating rod is sequentially and fixedly provided with a polluted instrument box containing frame, an edge tool box containing frame, a hand sanitizer containing frame, a sterile article containing drawer and a hanging frame from bottom to top. And a funnel type garbage can is fixedly mounted on the top surface of the bottom plate. By means of the large opening of the funnel type garbage can, medical garbage can be put more accurately, flushing fluid is effectively prevented from splashing, the bottom is narrow, garbage can be gathered at the bottom more quickly, recycling is convenient, and garbage leakage is avoided; layered design standardizes placement of various articles, clinical use is convenient, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, more particularly, the present application relates to a dressing trolley. BACKGROUND

[0002] It is known that the dressing trolley is called a treatment trolley or a nursing trolley, which is a special mobile device for storing, carrying and operating the dressing required medicines, instruments and accessories in medical institutions (such as hospital wards, clinics, emergency rooms, etc.); it is the core equipment platform for medical staff to carry out wound care, intravenous injection, dressing change and other daily treatment work; among them, the medical staff needs to use various dressing instruments, gauze and other dressing instruments to the patient's bedside for dressing operation, sometimes the patient's dressing site needs to be supported, and sometimes a garbage can needs to be carried to store garbage; among them, the ordinary dressing trolley mainly stores dressing articles and instruments for medical staff to take when various clinical operations are carried out.

[0003] However, in clinical use, the existing dressing trolley has some drawbacks, for example: 1. The existing dressing trolley lacks measures for dressing operation on the bed for patients who are inconvenient to move, i.e. it cannot meet the all-round clinical needs, and the dressing practicability is poor; 2. The existing dressing trolley is used for complex large wound dressing treatment, and the area for storing garbage is mostly a garbage can with small space and shallow opening, which is easy to cause waste liquid to flow out when disinfecting and flushing, and if the garbage exceeds the garbage can, it will pollute the surrounding environment, which does not meet the hospital infection requirements, so a multifunctional dressing trolley needs to be designed to meet the existing clinical needs and solve the clinical pain points. Therefore, a dressing trolley is proposed as a further improvement. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a dressing trolley to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a dressing trolley, comprising: a bottom plate, a handrail table and a main operating rod; The main operating rod comprises: a fixed seat, a rotating cylinder and a lifting straight rod, the bottom of the fixed seat is fixedly installed on the top surface of the bottom plate, the top of the fixed seat is rotatably connected with the bottom of the rotating cylinder, the rotating cylinder is movably sleeved on the outer surface of the lifting straight rod, and the outer surface of the rotating cylinder is provided with a circular locking piece penetrating into the interior of the rotating cylinder and abutting against the lifting straight rod; the rotating cylinder is rotatably connected with a mechanical arm through the circular locking piece, and the other end of the mechanical arm is rotatably connected with the bottom end of the handrail table; the rotating cylinder is provided with a ratchet mechanism for limiting the rotation of the mechanical arm; The rotating cylinder is sequentially fixed and installed from bottom to top with a contaminated instrument box placing rack, a sharp box placing rack and a hand sanitizer placing rack; the lifting straight rod is sequentially fixed and installed from bottom to top with a sterile article placing drawer and a hanging rack for suspending a disinfectant or an irrigation fluid. The top surface of the bottom plate is further fixed and installed with a funnel type garbage can and a square frame garbage can, and the four corners of the bottom surface of the bottom plate are fixed and installed with universal wheels.

[0006] Further, the circular locking member comprises a threaded segment, a cylindrical segment and a knob, the two ends of the cylindrical segment are fixedly connected with the end of the threaded segment and the knob, the threaded segment is threadedly connected with the rotating cylinder, and the cylindrical segment is rotationally connected with the mechanical arm.

[0007] Further, the mechanical arm comprises a first mechanical arm, a second mechanical arm and a third mechanical arm. One end of the first mechanical arm is rotationally connected with the cylindrical segment, the other end of the first mechanical arm is movably sleeved on one end of the second mechanical arm, a fixing bolt is threadedly connected with the outer surface of the second mechanical arm close to the first mechanical arm, the end of the fixing bolt penetrating through the first mechanical arm abuts against the second mechanical arm, one end of the second mechanical arm away from the first mechanical arm is rotationally connected with the third mechanical arm through a rotating shaft, and the other end of the third mechanical arm is rotationally connected with the bottom of the hand holding table.

[0008] Further, the ratchet mechanism comprises a fixed plate and a clamping strip. The fixed plate is fixedly installed on the rotating cylinder, the end of the first mechanical arm away from the second mechanical arm and facing the surface of the fixed plate is provided with a plurality of uniformly distributed clamping grooves, the fixed plate is provided with an expansion groove, the clamping strip slides in the expansion groove, the end of the clamping strip penetrating through the expansion groove penetrates into the clamping groove, and the end of the clamping strip away from the clamping groove is fixedly connected with the fixed plate through a return spring.

[0009] Further, the shape of the hand holding table is set as a U-shaped shape.

[0010] Further, one side of the sterile article placing drawer is fixedly connected with the lifting straight rod, the top of the sterile article placing drawer is slidably connected with an operation plate, the top surface of the sterile article placing drawer is provided with a placing recess, and the height of the rotating cylinder is not greater than the height difference between the bottom surface of the sterile article placing drawer and the top surface of the rotating cylinder.

[0011] Further, the hanging rack is fixedly installed on the top of the lifting straight rod, the side surface of the hanging rack is provided with a T-shaped sliding groove, and a plurality of J-shaped hanging hooks are slidably connected in the T-shaped sliding groove.

[0012] Further, the four outer surfaces of the top of the funnel type garbage can are fixedly installed with fixing hooks.

[0013] Further, the shape of the contaminated instrument box rack is set as a square type.

[0014] Further, a handle is fixedly installed on the top of the fixing plate.

[0015] Technical effects and advantages of the present application: 1. Compared with the prior art, by setting the funnel type garbage can, the opening is large, the medical waste is more accurate to put, effectively prevents the splash of the flushing liquid, the bottom is narrow, the garbage is faster to gather to the bottom of the garbage can, convenient for recycling, avoids the leakage of garbage; according to the requirements of hospital infection, the contaminated instrument box rack, the sharp tool box rack, the sterile article placing drawer and the suspension rack for suspending disinfectant or flushing liquid are designed in layers, which standardizes the placement of various articles and is convenient to take; therefore, it is convenient for clinical use, saves time and effort, and improves work efficiency.

[0016] 2. Compared with the prior art, by setting the circular locking piece, the lifting straight rod can be tightly pressed when the circular locking piece is tightened on the rotating cylinder, thereby fixing the height of the lifting straight rod; the mechanical arm takes the circular locking piece as the rotating center, and the circular locking piece has multiple functions; and the ratchet mechanism provided on the rotating cylinder fixes the mechanical arm; therefore, the rotation of the mechanical arm can be controlled; since one end of the mechanical arm is rotatably connected with the rotating cylinder through the circular locking piece, that is, the vertical height of one end of the mechanical arm is fixed, and the mechanical arm can rotate with the rotating cylinder in the horizontal plane, and the mechanical arm has the function of elongation, so that the hand holding table on the mechanical arm can be changed in the horizontal and vertical directions, so that the hand holding table can be moved to the patient bed, so that the medical staff can easily place the inconveniently moved patient's limbs on the hand holding table for dressing change operation, and therefore the present application has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure of the present application Figure 1 .

[0018] Figure 2 is the overall structure of the present application Figure 2 .

[0019] Figure 3 is the schematic diagram of the mechanical arm of the present application Figure 1 .

[0020] Figure 4 is the schematic diagram of the mechanical arm of the present application Figure 2 .

[0021] Figure 5 is the structure diagram of the ratchet mechanism of the present application.

[0022] Figure 6 is the structure diagram of the circular locking piece of the present application.

[0023] The attached figures are labeled as follows: 10. Base plate; 11. Funnel-shaped trash can; 111. Fixing hook; 12. Square-frame trash can; 13. Casters; 20. Handrail; 30. Main operating lever; 31. Fixing base; 32. Rotating cylinder; 33. Lifting rod; 34. Contaminated instrument box rack; 35. Sharps box rack; 36. Hand sanitizer rack; 37. Sterile item drawer; 371. Operating panel; 372. Placement groove; 38. Suspension Hanger; 381, T-shaped slide; 382, ​​suspension hook; 40, circular locking element; 41, threaded section; 42, cylindrical section; 43, knob; 50, robotic arm; 51, first robotic arm; 511, slot; 52, second robotic arm; 53, third robotic arm; 54, fixing bolt; 60, ratchet mechanism; 61, fixing plate; 611, telescopic groove; 612, handle; 62, locking strip; 63, return spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] As attached Figures 1-6 The dressing cart shown includes: a base plate 10, a handrail 20, and a main control lever 30; The main operating lever 30 includes: a fixed base 31, a rotating cylinder 32, and a lifting rod 33. The bottom of the fixed base 31 is fixedly installed on the top surface of the base plate 10, and the top of the fixed base 31 is rotatably connected to the bottom of the rotating cylinder 32. That is, the rotating cylinder 32 and the fixed base 31 are on the same central axis in the vertical direction, and the rotating cylinder 32 rotates around this central axis. The fixed base 31 plays a supporting role to prevent rotational deviation. The rotating cylinder 32 is movably sleeved on the outer surface of the lifting rod 33. The outer surface of the rotating cylinder 32 is provided with a circular locking member 40 that penetrates into the interior of the rotating cylinder 32 and presses against the lifting rod 33. Thus, the circular locking member 40 can control the lifting of the lifting rod 33 within the rotating cylinder 32, that is, tighten or loosen it for lifting. The rotating cylinder 32 is rotatably connected to a robotic arm 50 through the circular locking member 40, that is, the robotic arm 50 rotates around the circular locking member 40. The circular locking member 40 has multiple functions and is innovative. The other end of the robotic arm 50 is rotatably connected to the bottom of the hand rest 20. Since the hand rest 20 needs to place the patient's limb, a memory foam pad is attached to its surface to accommodate different limb positions. The surface of the memory foam pad is covered with leather material to facilitate cleaning and disinfection. The rotating cylinder 32 is equipped with a ratchet mechanism 60 to restrict the rotation of the robotic arm 50, so as to fix the robotic arm 50 and control the rotation of the robotic arm 50. Wherein, since the one end of the mechanical arm 50 is connected with the rotating cylinder 32 through the circular locking piece 40, that is, the vertical direction height of the one end of the mechanical arm 50 is fixed, it can rotate with the rotating cylinder 32 in the horizontal plane, and the handrail table 20 on the mechanical arm 50 can be changed in the horizontal and vertical directions by combining the elongation function of the mechanical arm 50, so that the handrail table 20 can be moved to the bed, and the medical staff can easily place the inconveniently moved patient's limbs on the handrail table 20 for dressing change operation, thus having high practicability. The rotating cylinder 32 is sequentially fixedly installed with a contaminated instrument box placing rack 34, a sharp box placing rack 35 and a hand sanitizer placing rack 36 from bottom to top; the lifting straight rod 33 is sequentially fixedly installed with a sterile article placing drawer 37 and a hanging rack 38 for hanging a disinfectant or an irrigation liquid from bottom to top; wherein, the contaminated instrument box placing rack 34 can place a contaminated instrument box for the medical staff to operate and use; the sharp box placing rack 35 can place a sharp box, so as to put an infusion tube needle or a syringe needle into the sharp box, and then facilitate the medical staff to perform dressing change operation; wherein, the sterile article placing drawer 37 is used for storing dressing change equipment, so as to isolate the equipment from the surrounding environment and reduce the occurrence of contaminated equipment; and the hanging rack 38 can hang the disinfectant or the irrigation liquid during dressing change, so as to facilitate the medical staff to perform dressing change operation.

[0026] The top surface of the bottom plate 10 is also fixedly installed with a funnel type garbage can 11 and a square frame garbage can 12, and the four corners of the bottom surface of the bottom plate 10 are fixedly installed with universal wheels 13; wherein, the funnel type garbage can 11 has a large opening, can more accurately put medical garbage, effectively prevents the irrigation liquid from splashing, has a narrow bottom, and can quickly gather garbage to the bottom of the garbage can, and is convenient for recycling; and the square frame garbage can 12 is used as a common garbage can to place non-medical waste garbage.

[0027] In a preferred embodiment, as shown in Figs. 1 to 3, the device comprises a bottom plate 10, a rotating cylinder 32, a lifting straight rod 33, a mechanical arm 50, a handrail table 20, a contaminated instrument box placing rack 34, a sharp box placing rack 35, a hand sanitizer placing rack 36, a sterile article placing drawer 37 and a hanging rack 38. Figure 5 , and Figs. 4 to 6, the device comprises a bottom plate 10, a rotating cylinder 32, a lifting straight rod 33, a mechanical arm 50, a handrail table 20, a contaminated instrument box placing rack 34, a sharp box placing rack 35, a hand sanitizer placing rack 36, a sterile article placing drawer 37 and a hanging rack 38. Figure 6 As shown in Figs. 7 to 9, the device comprises a bottom plate 10, a rotating cylinder 32, a lifting straight rod 33, a mechanical arm 50, a handrail table 20, a contaminated instrument box placing rack 34, a sharp box placing rack 35, a hand sanitizer placing rack 36, a sterile article placing drawer 37 and a hanging rack 38.

[0028] In a preferred embodiment, as shown in Figs. 1 to 3, the device comprises a bottom plate 10, a rotating cylinder 32, a lifting straight rod 33, a mechanical arm 50, a handrail table 20, a contaminated instrument box placing rack 34, a sharp box placing rack 35, a hand sanitizer placing rack 36, a sterile article placing drawer 37 and a hanging rack 38. Figure 1 , Figs. 4 to 6, Figs. 7 to 9 and Figs. 10 to 12, the device comprises a bottom plate 10, a rotating cylinder 32, a lifting straight rod 33, a mechanical arm 50, a handrail table 20, a contaminated instrument box placing rack 34, a sharp box placing rack 35, a hand sanitizer placing rack 36, a sterile article placing drawer 37 and a hanging rack 38. Figure 2 Figure 3 Figure 4 ​​​The mechanical arm 50 comprises a first mechanical arm 51, a second mechanical arm 52 and a third mechanical arm 53. One end of the first mechanical arm 51 is rotationally connected with the cylindrical segment 42, that is, the first mechanical arm 51 rotates around the cylindrical segment 42 as the center. The other end of the first mechanical arm 51 is movably sleeved on one end of the second mechanical arm 52. The first mechanical arm 51 is threadedly connected with a fixing bolt 54 close to the outer surface of the second mechanical arm 52. The end of the fixing bolt 54 penetrating through the first mechanical arm 51 abuts against the second mechanical arm 52, that is, the fixing bolt 54 fixes the second mechanical arm 52 by abutting, so as to control the second mechanical arm 52, the third mechanical arm 53 rotationally connected with the second mechanical arm 52 and the handrest 20 to keep a horizontal state by controlling the rotation of the fixing bolt 54, thereby facilitating the mechanical arm 50 to support the patient's limbs. The end of the second mechanical arm 52 away from the first mechanical arm 51 is rotationally connected with the third mechanical arm 53 through a rotating shaft. The other end of the third mechanical arm 53 is rotationally connected with the bottom of the handrest 20.

[0029] In the second embodiment of the mechanical arm 50, the mechanical arm 50 is a pneumatic mechanical arm, which can realize the vertical lifting adjustment and horizontal position adjustment of the handrest 20 at the end of the mechanical arm 50.

[0030] In a preferred embodiment, as shown in FIGS. 1 and 2, the mechanical arm 50 comprises a first mechanical arm 51, a second mechanical arm 52 and a third mechanical arm 53. Figure 4 and FIG. 3, the handrest 20 comprises a first handrest 21 and a second handrest 22. Figure 5 As shown in FIGS. 4 and 5, the ratchet mechanism 60 comprises a fixed plate 61 and a clamping strip 62. The fixed plate 61 is fixedly installed on the rotating cylinder 32. The end of the first mechanical arm 51 away from the second mechanical arm 52 and toward the surface of the fixed plate 61 is provided with a plurality of uniformly distributed clamping grooves 511. The fixed plate 61 is provided with an expansion groove 611. The clamping strip 62 slides in the expansion groove 611. The end of the clamping strip 62 penetrating through the expansion groove 611 penetrates into the clamping groove 511. The end of the clamping strip 62 away from the clamping groove 511 is fixedly connected with the fixed plate 61 through a return spring 63. If the first mechanical arm 51 is to be rotated, the clamping strip 62 is pulled to overcome the elastic force of the return spring 63, so that the clamping strip 62 is disengaged from the clamping groove 511 on the first mechanical arm 51. At this time, the first mechanical arm 51 can rotate around the cylindrical segment 42 of the circular locking piece 40 as the center. When the external force is released, the return spring 63 returns the clamping strip 62, so that the clamping strip 62 is clamped with the clamping groove 511 on the first mechanical arm 51, and the first mechanical arm 51 remains in a fixed state.

[0031] In a preferred embodiment, as shown in FIGS. 1 and 2, the mechanical arm 50 comprises a first mechanical arm 51, a second mechanical arm 52 and a third mechanical arm 53. Figure 1 and FIG. 3, the handrest 20 comprises a first handrest 21 and a second handrest 22. Figure 2 As shown in FIGS. 4 and 5, the ratchet mechanism 60 comprises a fixed plate 61 and a clamping strip 62.

[0032] In a preferred embodiment, as shown in FIGS. 1 and 2, the mechanical arm 50 comprises a first mechanical arm 51, a second mechanical arm 52 and a third mechanical arm 53. Figure 1And the accompanying drawings Figure 2 As shown in the drawings, one side of the sterile article placing drawer 37 is fixedly connected with the lifting straight rod 33, and the top of the sterile article placing drawer 37 is slidingly connected with an operation plate 371, so that medical staff can temporarily place medical instruments on the operation plate 371, thereby facilitating dressing change operation; the top surface of the sterile article placing drawer 37 is provided with a placing groove 372, which can serve as a platform for temporarily placing articles; the height of the rotating cylinder 32 is not greater than the height difference between the bottom surface of the sterile article placing drawer 37 and the top surface of the rotating cylinder 32, so as to avoid the sterile article placing drawer 37 lifted by the lifting straight rod 33 from contacting the rotating cylinder 32 during lifting, thereby avoiding collision between them; since the overall bottom weight is heavy, and the volume of the sterile article placing drawer 37 is small and the weight is light, the overall balance will not be affected.

[0033] In a preferred embodiment, as shown in the drawings Figure 1 And the accompanying drawings Figure 2 As shown in the drawings, the hanging rack 38 is fixedly installed on the top of the lifting straight rod 33, the side surface of the hanging rack 38 is provided with a T-shaped sliding groove 381, and a plurality of J-shaped hanging hooks 382 are slidingly connected inside the T-shaped sliding groove 381; so as to place the washing liquid or disinfectant liquid by using the hanging hooks 382; and the hanging hooks 382 can slide along the T-shaped sliding groove 381 to adjust the position, thereby improving the practicability.

[0034] In a preferred embodiment, as shown in the drawings Figure 1 And the accompanying drawings Figure 2 As shown in the drawings, the four outer surfaces of the top of the funnel-type garbage can 11 are fixedly installed with fixed hooks 111; so as to pull the garbage bag by using the fixed hooks 111 when the funnel-type garbage can 11 is sleeved with the garbage bag, thereby fixing the garbage bag in the funnel-type garbage can 11, and avoiding disengagement during use.

[0035] In a preferred embodiment, as shown in the drawings Figure 1 And the accompanying drawings Figure 2 As shown in the drawings, the shape of the contaminated instrument box placing rack 34 is set as a square box type, so that the sleeved garbage bag will not easily disengage.

[0036] In a preferred embodiment, as shown in the drawings Figure 4 And the accompanying drawings Figure 5 As shown in the drawings, the top of the fixed plate 61 is fixedly installed with a handle 612, so that medical staff can control the movement of the dressing trolley by using the handle 612 when using the dressing trolley.

[0037] The working principle of the application is: in use, for patients who are convenient to move, medical staff move the dressing change trolley to the bedside, adjust the posture of the mechanical arm 50 through the fixing bolt 54 and the circular locking member 40, so that the handrail table 20 is located above the funnel-shaped garbage can 11, and determine the height of the suspension frame 38 through the circular locking member 40, at this time the medical staff can conveniently perform the dressing change operation; if the patient is inconvenient to move, the handrail table 20 is moved to be located above the patient's bed through the fixing bolt 54 and the circular locking member 40, at this time the medical staff can conveniently perform the dressing change operation.

[0038] It should be noted that, in this document, the terms "first" and "second" and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A medication changing cart, characterized in that, include: Base plate (10), hand platform (20) and main control lever (30); The main operating lever (30) includes: a fixed base (31), a rotating cylinder (32), and a lifting rod (33). The bottom of the fixed base (31) is fixedly installed on the top surface of the base plate (10). The top of the fixed base (31) is rotatably connected to the bottom of the rotating cylinder (32). The rotating cylinder (32) is movably sleeved on the outer surface of the lifting rod (33). The outer surface of the rotating cylinder (32) is provided with a circular locking member (40) that penetrates into the rotating cylinder (32) and presses against the lifting rod (33). The rotating cylinder (32) is rotatably connected to a mechanical arm (50) through the circular locking member (40). The other end of the mechanical arm (50) is rotatably connected to the bottom end of the handrail (20). The rotating cylinder (32) is provided with a ratchet mechanism (60) that restricts the rotation of the mechanical arm (50). The rotating cylinder (32) is fixedly installed with a contaminated instrument box rack (34), a sharps box rack (35), and a hand sanitizer rack (36) from bottom to top; the lifting rod (33) is fixedly installed with a sterile item drawer (37) and a hanging rack (38) for hanging disinfectant or rinsing solution from bottom to top. The top surface of the base plate (10) is also fixedly installed with a funnel-shaped trash can (11) and a square trash can (12), and four corners of the bottom surface of the base plate (10) are fixedly installed with casters (13).

2. The dressing cart according to claim 1, characterized in that: The circular locking component (40) includes: a threaded section (41), a cylindrical section (42), and a knob (43); the two ends of the cylindrical section (42) are fixedly connected to the end of the threaded section (41) and the knob (43) respectively; the threaded section (41) is threadedly connected to the rotating cylinder (32); and the cylindrical section (42) is rotatably connected to the robotic arm (50).

3. The dressing cart according to claim 2, characterized in that: The robotic arm (50) includes: a first robotic arm (51), a second robotic arm (52) and a third robotic arm (53); One end of the first robotic arm (51) is rotatably connected to the cylindrical section (42), and the other end of the first robotic arm (51) is movably sleeved on one end of the second robotic arm (52). The first robotic arm (51) is threaded with a fixing bolt (54) near the outer surface of the second robotic arm (52). The end of the fixing bolt (54) passing through the first robotic arm (51) is pressed against the second robotic arm (52). The end of the second robotic arm (52) away from the first robotic arm (51) is rotatably connected to the third robotic arm (53) through a rotating shaft. The other end of the third robotic arm (53) is rotatably connected to the bottom of the handrail (20).

4. A dressing change cart according to claim 3, characterized in that: The ratchet mechanism (60) includes: a fixed plate (61) and a locking bar (62); The fixed plate (61) is fixedly installed on the rotating cylinder (32). The first robotic arm (51) has a number of evenly distributed slots (511) on its surface away from the second robotic arm (52) and facing the fixed plate (61). The fixed plate (61) has a telescopic groove (611). The clip (62) slides inside the telescopic groove (611). The end of the clip (62) that passes through the telescopic groove (611) is inserted into the slot (511). The end of the clip (62) that is away from the slot (511) is fixedly connected to the fixed plate (61) by a return spring (63).

5. A dressing change cart according to claim 1, characterized in that: The handrail (20) is U-shaped.

6. A dressing change cart according to claim 1, characterized in that: One side of the sterile item drawer (37) is fixedly connected to the lifting rod (33), and the top of the sterile item drawer (37) is slidably connected to the operating plate (371). The top surface of the sterile item drawer (37) is provided with a placement groove (372). The height of the rotating cylinder (32) is not greater than the height difference between the bottom surface of the sterile item drawer (37) and the top surface of the rotating cylinder (32).

7. A dressing change cart according to claim 1, characterized in that: The suspension bracket (38) is fixedly installed on the top of the lifting rod (33). A T-shaped groove (381) is provided on the side of the suspension bracket (38). Several J-shaped hooks (382) are slidably connected inside the T-shaped groove (381).

8. A dressing change cart according to claim 1, characterized in that: The funnel-shaped trash can (11) has four fixed hooks (111) on its top four outer surfaces.

9. A dressing change cart according to claim 1, characterized in that: The contaminated instrument box rack (34) is designed to be square.

10. A dressing change cart according to claim 1, characterized in that: A handle (612) is fixedly installed on the top of the fixing plate (61).

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