Tray fixing device for operating room nursing

Abstract

The invention belongs to the technical field of operating room nursing, and particularly relates to an operating room nursing tray fixing device which comprises a bottom plate, the bottom wall of the bottom plate is connected with a movable self-locking assembly, the movable self-locking assembly is electrically connected with an air pump, and the circumferential wall of a supporting column is symmetrically connected with self-locking type unfolding assemblies. The self-locking type unfolding assembly is communicated with the movable self-locking assembly through an air pipe, one end of the self-locking type unfolding assembly is fixedly connected with a vacuum box, and the vacuum box is hollow; by means of mechanical rotation, rapid unfolding of the placing box is achieved, stability after unfolding is guaranteed, rapid storage of the placing box is achieved by means of bevel edge guiding, various tools are stably fixed by means of vacuum adsorption, the tools are prevented from falling off in the transfer process, it is guaranteed that the tools are in a vacuum sterile state, and the work efficiency is improved. And the movement of the moving wheels can be limited, and the stability during use is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of operating room nursing, and specifically refers to a tray fixing device for operating room nursing. Background Art

[0002] The operating room is an important place in the hospital for performing surgeries and treatments. Instruments and management during the surgical process are crucial for the smooth progress of the surgery. During the surgical process, medical staff need to frequently pick up surgical instruments from the tray.

[0003] During the use of traditional operating room trays, the trays cannot be locked when unfolded, and the trays are prone to reset when picking up tools from them. Moreover, improper operation may cause the device to shift. Tools need to be fixed during transportation. The prior art cannot adapt to different types and sizes of surgical tools, restricting its application in various surgeries.

[0004] Therefore, a tray fixing device for operating room nursing is needed to solve the technical problems in the prior art, such as the tray cannot be locked when unfolded and is prone to reset, improper operation causes the device to shift, and it cannot adapt to different types and sizes of surgical tools. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides a tray fixing device for operating room nursing. The present application uses the method of mechanical rotation to achieve rapid unfolding and also ensures stability after unfolding. By using the method of hypotenuse guidance, rapid storage is achieved, solving the technical problem in the prior art that the tray cannot be locked when unfolded and is prone to reset. By using the method of vacuum adsorption, various tools are stably fixed to prevent the tools from falling during transportation and also ensure that the tools are in a vacuum aseptic state, solving the technical problem in the prior art that it cannot adapt to different types and sizes. After unfolding in place, the movement of the moving wheels can be restricted to improve the stability during use. At the same time, it is also possible to adjust whether to extract vacuum from the vacuum box according to requirements, solving the technical problem in the prior art that improper operation causes the device to shift.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A tray fixing device for operating room nursing proposed in this solution includes a bottom plate. One side of the top wall of the bottom plate is fixedly connected with an air pump, and one side of the top wall of the bottom plate is fixedly connected with a support column. The bottom wall of the bottom plate is connected with a moving self-locking component, and the moving self-locking component is electrically connected to the air pump. The self-locking expansion components are symmetrically connected to the support column. The self-locking expansion components and the moving self-locking component are connected through an air pipe. A vacuum box is connected to the self-locking expansion component. The vacuum box is hollow. One side wall of the vacuum box is connected to the output end of the air pump through an air pipe. The top wall of the vacuum box is fixedly connected with a placement box. The inner side wall of the placement box is slidably connected with a cover plate. The top wall of the vacuum box is connected with vacuum fixing components in a rectangular array distribution, and the vacuum box and the placement box are connected and arranged through the vacuum fixing components; The self-locking expansion component includes an expansion unit, a ratchet lock and a support unit. The expansion unit is connected to the circumferential wall of the support column, the support unit is connected to the expansion unit, and the support unit is connected to the ratchet lock.

[0007] Preferably, the expansion unit includes an expansion seat, a fixing plate, a driving plate and an arc piston. The expansion seat is rotatably sleeved on the support column, and the other end of the expansion seat is fixedly connected to the side wall of the vacuum box. The side wall of the fixing plate is fixedly connected to the circumferential wall of the support column, and the fixing plate is located below the expansion seat. The side wall of the driving plate is fixedly connected to the outer circumferential wall of the expansion seat. The base end of the arc piston is fixedly connected to the side wall of the fixing plate, and the telescopic end of the arc piston is fixedly connected to the side wall of the driving plate, and the arc piston is coaxially arranged with the support column.

[0008] Preferably, the support unit includes a sliding block, a moving rod, a placement plate, a first compression spring and a second compression spring. The middle of the sliding block is slidably connected to the driving plate. One side outer edge of one end of the sliding block is beveled. The moving rod is longitudinally slidably connected to the other end of the sliding block. The bottom wall of the placement plate is fixedly connected to the top end of the moving rod. The first compression spring is sleeved on the moving rod, and the two ends of the first compression spring are respectively fixedly connected to the bottom wall of the placement plate and the top wall of the sliding block. The two ends of the second compression spring are respectively fixedly connected to the side wall of the sliding block and the side wall of the driving plate.

[0009] Preferably, the ratchet lock includes a ratchet, a blocking block, a contact block, ratchet teeth, and a pushing block. The ratchet is fixedly connected to the circumferential wall of the support column, and the ratchet is located above the unfolding seat. The side wall of the blocking block is fixedly connected to the circumferential wall of the support column, and the blocking block is located below the unfolding seat. One outer edge of the side wall of the blocking block is beveled. The bevel on the blocking block is arranged in cooperation with the bevel on the sliding block. The contact block is fixedly connected to the support column. One outer edge of the bottom wall of the contact block is beveled. The ratchet teeth are hinged to the top wall of the placement plate. The ratchet teeth are engaged with the ratchet. The side wall of the pushing block is fixedly connected to the side wall of the placement plate. One outer edge of the side wall of the pushing block is beveled. The bevel on the pushing block is arranged in cooperation with the bevel on the contact block.

[0010] Preferably, the vacuum fixing assembly includes a fixing rod, a vacuum suction cup, and a guiding spring. The circumferential wall of the fixing rod is longitudinally slidably connected to the vacuum box. The fixing rod is hollow, and the placement box and the vacuum box are communicated through the hollow part of the fixing rod. The top end of the fixing rod is fixedly communicated with a vacuum suction cup. The guiding spring is sleeved on the fixing rod, and the two ends of the guiding spring are respectively fixedly connected to the bottom wall of the vacuum suction cup and the top wall of the vacuum box.

[0011] Preferably, the vacuum fixing assembly further includes a fixed pneumatic push rod, a fixed seat, and a support seat. The support seat is symmetrically fixedly connected to the inner bottom wall of the vacuum box with the axis of the fixing rod as the symmetry axis. The base end of the fixed pneumatic push rod is fixedly connected to the side wall of the support seat. A communication hole is provided on the support seat. The base end of the fixed pneumatic push rod is communicated with the vacuum box through the communication hole. The bottom end side wall of the fixing rod is slidably connected to the side wall of the support seat. One end of the fixed seat is fixedly connected to the output end of the fixed pneumatic push rod, and the other end of the fixed seat is provided with an arc-shaped groove.

[0012] Preferably, the mobile self-locking assembly includes an intermediate air box, a telescopic cylinder, a locking rack, and a telescopic spring. The top wall of the intermediate air box is fixedly connected to the bottom wall of the bottom plate. The top wall of the intermediate air box is communicated with the output end of the arc-shaped piston through an air pipe. The telescopic cylinders are symmetrically fixedly connected to the side walls of the intermediate air box. The input end of the telescopic cylinder is communicated with the side wall of the intermediate air box. The output end of the telescopic cylinder is fixedly connected to a locking rack. The telescopic spring is sleeved on the telescopic cylinder, and the two ends of the telescopic spring are respectively fixedly connected to the side wall of the locking rack and the side wall of the intermediate air box.

[0013] Preferably, the mobile self-locking assembly further includes a locking gear, a rotating shaft, and a first switch. The rotating shaft is rotatably connected to the bottom wall of the bottom plate symmetrically. The locking gear is coaxially fixedly connected to the circumferential wall of the rotating shaft. When the locking rack moves to the position of the locking gear, the locking gear is engaged with the locking rack. The top wall of the first switch is fixedly connected to the bottom wall of the bottom plate. The first switch is electrically connected to the air pump. Moving wheels are coaxially fixedly connected to both ends of the rotating shaft.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: 1. By using the mechanical rotation method, the present application realizes the rapid deployment of the placement box. With the self-locking property of the ratchet and ratchet teeth, it ensures the stability of the placement box after deployment. By using the inclined-edge guiding method, it realizes the rapid storage of the placement box. By using the vacuum adsorption method, it can stably fix various tools, avoid the tools from falling during transportation, and also ensure that the tools are in a vacuum and sterile state. After the placement box is deployed in place, it can also limit the movement of the moving wheels, improve the stability during use, and can also adjust whether to extract the vacuum of the vacuum box according to needs; 2. By rotating the deployment seat on the support column to drive the ratchet teeth to engage with the ratchet wheel, it ensures the stability of the placement box after deployment. During reset, by using the contact block and the push block in cooperation to press the placement plate, the ratchet wheel and the ratchet teeth cannot engage, and the deployment seat can be rotated in the reverse direction to realize the reset of the placement box after deployment. The cooperation of the blocking block and the sliding block pushes the ratchet teeth to engage with the ratchet wheel; 3. By using an air pump to extract the vacuum of the vacuum box, the air in the placement box is extracted, pushing the cover plate to move and pressing the tool tightly on the vacuum suction cup, adapting to tools of different shapes and sizes. The vacuum suction cup pushes the driving block to move. By using the movement of the fixed rod in the vacuum box and in cooperation with the vacuum extraction method, it ensures the tight fit between the vacuum suction cup and the bottom of the tool, and also avoids the problem of tool shaking during transportation; 4. When the deployment seat rotates on the support column, the arc-shaped piston is compressed, pushing the air in the arc-shaped piston into the middle air box, pushing the locking rack to engage with the locking gear, restricting the moving wheels from rotating, improving the stability during use. At the same time, when the locking rack touches the first switch, the air pump is turned off and cannot extract the vacuum of the vacuum box. When the locking rack cannot touch the first switch, the air pump starts to extract the vacuum of the vacuum box, realizing the convenience of taking tools during use and fixing the tools when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the solution, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention.

[0016] Figure 1 FIG. is a schematic diagram of the overall structure of a tray fixing device for operating room nursing proposed by the present invention; Figure 2 FIG. is a schematic diagram of the internal structure of the lifting placement box of a tray fixing device for operating room nursing proposed by the present invention; Figure 3 FIG. is a schematic diagram of the connection structure of the self-locking deployment assembly of a tray fixing device for operating room nursing proposed by the present invention; Figure 4Schematic diagram of the connection structure of the self-locking unfolding component from another perspective of a tray fixing device for operating room nursing proposed by the present invention; Figure 5 Schematic diagram of the connection structure of the vacuum fixing component of a tray fixing device for operating room nursing proposed by the present invention; Figure 6 Schematic diagram of the overall sectional connection structure of the vacuum fixing component of a tray fixing device for operating room nursing proposed by the present invention; Figure 7 Schematic diagram of the connection structure of the bottom wall of the bottom plate of a tray fixing device for operating room nursing proposed by the present invention.

[0017] In the drawings: 1. Bottom plate, 2. Moving self-locking component, 3. Support column, 5. Vacuum fixing component, 6. Air pump, 7. Vacuum box, 8. Placing box, 9. Cover plate, 41. Unfolding unit, 42. Ratchet lock, 43. Support unit, 201. Intermediate air box, 202. Telescopic cylinder, 203. Locking rack, 204. Telescopic spring, 205. Locking gear, 206. Rotating shaft, 207. First switch, 208. Moving wheel, 401. Unfolding seat, 402. Ratchet, 403. Fixed plate, 404. Blocking block, 405. Driving plate, 406. Arc piston, 409. Contact block, 410. Sliding block, 411. Moving rod, 412. Placing plate, 413. Ratchet teeth, 414. Pushing block, 415. First compression spring, 416. Second compression spring, 501. Fixed rod, 502. Vacuum suction cup, 503. Guide spring, 504. Fixed pneumatic push rod, 505. Fixed seat, 506. Support seat.

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1, as Figures 1 - 7As shown in the figure, a tray fixing device for operating room nursing proposed by this solution includes a bottom plate 1. One side of the top wall of the bottom plate 1 is fixedly connected with an air pump 6. One side of the top wall of the bottom plate 1 is fixedly connected with a support column 3. The bottom wall of the bottom plate 1 is connected with a moving self-locking component 2. The moving self-locking component 2 is electrically connected with the air pump 6. The circumferential wall of the support column 3 is symmetrically connected with a self-locking unfolding component. The self-locking unfolding component is communicated with the moving self-locking component 2 through an air pipe. A vacuum box 7 is connected to the self-locking unfolding component. The vacuum box 7 is hollow. One side wall of the vacuum box 7 is communicated with the output end of the air pump 6 through an air pipe. The top wall of the vacuum box 7 is fixedly connected with a placement box 8. The inner side wall of the placement box 8 is slidably connected with a cover plate 9. The cover plate 9 is made of rubber. The top wall of the vacuum box 7 is connected with vacuum fixing components 5 in a rectangular array distribution. And the vacuum box 7 and the placement box 8 are communicated through the vacuum fixing components 5; The self-locking unfolding component includes an unfolding unit 41, a ratchet lock 42 and a support unit 43. The unfolding unit 41 is connected to the circumferential wall of the support column 3. The support unit 42 is connected to the unfolding unit 41. The support unit 43 is connected to the ratchet lock 42.

[0021] As Figures 1 - 4 shown in the figure, the unfolding unit 41 includes an unfolding seat 401, a fixing plate 403, a driving plate 405 and an arc piston 406. The unfolding seat 401 is rotatably sleeved on the support column 3. The other end of the unfolding seat 401 is fixedly connected with the side wall of the vacuum box 7. The side wall of the fixing plate 403 is fixedly connected with the circumferential wall of the support column 3. And the fixing plate 403 is located below the unfolding seat 401. The side wall of the driving plate 405 is fixedly connected with the outer circumferential wall of the unfolding seat 401. The base end of the arc piston 406 is fixedly connected with the side wall of the fixing plate 403. The telescopic end of the arc piston 406 is fixedly connected with the side wall of the driving plate 405. And the arc piston 406 is coaxially arranged with the support column 3.

[0022] As Figures 1 - 4 shown in the figure, the support unit 43 includes a sliding block 410, a moving rod 411, a placement plate 412, a first compression spring 415 and a second compression spring 416. The middle of the sliding block 410 is slidably connected with the driving plate 405. One side outer edge of one end of the sliding block 410 is beveled. The moving rod 411 is longitudinally slidably connected with the other end of the sliding block 410. The bottom wall of the placement plate 412 is fixedly connected with the top end of the moving rod 411. The first compression spring 415 is sleeved on the moving rod 411. The two ends of the first compression spring 415 are respectively fixedly connected with the bottom wall of the placement plate 412 and the top wall of the sliding block 410. The two ends of the second compression spring 416 are respectively fixedly connected with the side wall of the sliding block 410 and the side wall of the driving plate 405.

[0023] As Figures 1 - 4As shown, the ratchet lock 42 includes a ratchet wheel 402, a blocking block 404, a contact block 409, ratchet teeth 413 and a pushing block 414. The ratchet wheel 402 is fixedly connected to the circumferential wall of the support column 3, and the ratchet wheel 402 is located above the deployment seat 401. The side wall of the blocking block 404 is fixedly connected to the circumferential wall of the support column 3, and the blocking block 404 is located below the deployment seat 401. One outer edge of the side of the blocking block 404 is provided with an inclined edge, and the inclined edge on the blocking block 404 is cooperatively arranged with the inclined edge on the sliding block 410. The contact block 409 is fixedly connected to the support column 3, and one outer edge of the bottom wall of the contact block 409 is provided with an inclined edge. The ratchet teeth 413 are hingedly arranged on the top wall of the placement plate 412, and the ratchet teeth 413 are meshed with the ratchet wheel 402. The side wall of the pushing block 414 is fixedly connected to the side wall of the placement plate 412, and one outer edge of the side of the pushing block 414 is provided with an inclined edge, and the inclined edge on the pushing block 414 is cooperatively arranged with the inclined edge on the contact block 409.

[0024] As Figures 1 - 2 and Figures 5 - 6 As shown, the vacuum fixing assembly 5 includes a fixing rod 501, a vacuum suction cup 502 and a guiding spring 503. The fixing rod 501 is longitudinally slidably connected to the vacuum box 7. The fixing rod 501 is hollow, and the placement box 8 and the vacuum box 7 are communicated through the hollow part of the fixing rod 501. The top end of the fixing rod 501 is fixedly communicated with the vacuum suction cup 502. The guiding spring 503 is sleeved on the fixing rod 501, and both ends of the guiding spring 503 are fixedly connected to the bottom wall of the vacuum suction cup 502 and the top wall of the vacuum box 7 respectively; The vacuum fixing assembly 5 further includes a fixed pneumatic push rod 504, a fixed seat 505 and a support seat 506. The support seat 506 is symmetrically fixedly connected to the inner bottom wall of the vacuum box 7 with the axis of the fixing rod 501 as the symmetry axis. The base end of the fixed pneumatic push rod 504 is fixedly connected to the side wall of the support seat 506. A communication hole is provided on the support seat 506, and the base end of the fixed pneumatic push rod 504 is communicated with the vacuum box 7 through the communication hole. The bottom end side wall of the fixing rod 501 is slidably connected to the side wall of the support seat 506. The bottom end of the fixing rod 501 initially blocks the communication hole, and the base end of the fixed pneumatic push rod 504 cannot be communicated with the vacuum box 7 through the communication hole. When the bottom end of the fixing rod 501 slides on the support seat 506 and exposes the communication hole, the base end of the fixed pneumatic push rod 504 is communicated with the vacuum box 7 through the communication hole. One end of the fixed seat 505 is fixedly connected to the output end of the fixed pneumatic push rod 504, and the other end of the fixed seat 505 is provided with an arc-shaped groove.

[0025] As Figures 1 - 2 and Figure 7As shown in the figure, the mobile self-locking assembly 2 includes an intermediate air tank 201, a telescopic cylinder 202, a locking rack 203 and a telescopic spring 204. The top wall of the intermediate air tank 201 is fixedly connected to the bottom wall of the bottom plate 1. The top wall of the intermediate air tank 201 is communicated with the output end of the arc piston 406 through an air pipe. When the driving plate 405 and the fixed plate 403 compress the arc piston 406, the air in the arc piston 406 enters the intermediate air tank 201 through the air pipe. The telescopic cylinders 202 are symmetrically and fixedly connected to the side walls of the intermediate air tank 201. The input end of the telescopic cylinder 202 is communicated with the side wall of the intermediate air tank 201. The output end of the telescopic cylinder 202 is fixedly connected with a locking rack 203. The telescopic spring 204 is sleeved on the telescopic cylinder 202. The two ends of the telescopic spring 204 are respectively fixedly connected to the side wall of the locking rack 203 and the side wall of the intermediate air tank 201; The mobile self-locking assembly 2 further includes a locking gear 205, a rotating shaft 206 and a first switch 207. The rotating shafts 206 are symmetrically and rotatably connected to the bottom wall of the bottom plate 1. The locking gear 205 is coaxially and fixedly connected to the rotating shaft 206. When the locking rack 203 moves to the position of the locking gear 205, the locking gear 205 meshes with the locking rack 203. The top wall of the first switch 207 is fixedly connected to the bottom wall of the bottom plate 1. The first switch 207 is electrically connected to the air pump 6. When the telescopic cylinder 202 is in the initial position, the locking rack 203 does not contact the first switch 207. When the air pump 6 is pneumatically actuated and the telescopic cylinder 202 moves, the locking rack 203 is driven to mesh with the locking gear 205. At the same time, the locking rack 203 touches the first switch 207 and the air pump 6 stops. Both ends of the rotating shaft 206 are coaxially and fixedly connected with moving wheels 208.

[0026] When it is necessary to store the tool, the storage box 8 is unfolded. The storage box 8 drives the unfolding seat 401 to rotate on the support column 3 through the vacuum box 7. The unfolding seat 401 pushes the driving plate 405 to move. The driving plate 405 and the fixed plate 403 compress the arc piston 406. The air in the arc piston 406 enters the intermediate air tank 201 through the air pipe. The driving plate 405 pushes the sliding block 410, the moving rod 411, the placing plate 412, the ratchet tooth 413 and the pushing block 414 to move. The ratchet wheel 402 meshes with the ratchet wheel 402 to limit the unfolding seat 401 from rotating reversely on the support column 3. As the unfolding seat 401 continues to rotate, the air entering the intermediate air tank 201 increases, pushing the telescopic cylinder 202 to move, driving the locking rack 203 to approach the locking gear 205, stretching the telescopic spring 204. The locking rack 203 meshes with the locking gear 205, and the moving wheel 208 cannot rotate. At the same time, the locking rack 203 touches the first switch 207 and the air pump 6 stops; When the pushing block 414 and the contact block 409 come into contact, stop pushing the deployment base 401, remove the cover plate 9 from the placement box 8, place the tool in the placement box 8 and make it contact the vacuum suction cup 502, and then put the cover plate 9 back into the placement box 8; Continue to push the deployment base 401. The contact block 409 drives the pushing block 414 to move longitudinally. The pushing block 414 drives the placement plate 412 and the moving rod 411 to move longitudinally, compressing the first compression spring 415. The ratchet 402 and the ratchet tooth 413 move away from each other. The second compression spring 416 resets, driving the sliding block 410 to move horizontally in the sliding groove, pushing the ratchet tooth 413 below the ratchet 402, and pushing the deployment base 401 to rotate reversely on the support column 3, driving the plate 405 and the fixed plate 403 to stretch the arc piston 406. The air in the intermediate air box 201 enters the arc piston 406 through the air pipe. At the same time, the telescopic spring 204 resets. The first switch 207 and the locking gear 205 do not come into contact, and the locking rack 203 and the locking gear 205 are not engaged. The air pump 6 starts to evacuate the inside of the vacuum box 7. When one end of the sliding block 410 contacts the blocking block 404, the blocking block 404 pushes the sliding block 410 away from the ratchet 402, compressing the second compression spring 416. When the ratchet tooth 413 is located below the meshing position of the ratchet 402, the first compression spring 415 resets, pushing the placement plate 412, the ratchet tooth 413 and the pushing block 414 to reset. The ratchet tooth 413 meshes with the ratchet 402, and it is impossible to push the deployment base 401 to rotate reversely on the support column 3; When the air pump 6 evacuates the inside of the vacuum box 7, it evacuates the inside of the placement box 8 through the fixed rod 501 and the vacuum suction cup 502. The external air pressure pushes the cover plate 9 close to the vacuum box 7. The cover plate 9 presses the tool onto the vacuum suction cup 502, driving the fixed rod 501 to move, compressing the guiding spring 503. The bottom end of the fixed rod 501 moves on the support seat 506, exposing the communication hole. The vacuum box 7 is connected to the fixed pneumatic push rod 504 through the communication hole. The fixed pneumatic push rod 504 drives the fixed seat 504 to move. The arc groove on the fixed seat 504 clamps the fixed rod 501, and the fixed rod 501 cannot move further, so that the vacuum suction cup 502 completely fits the lower part of the tool, fixing different tools and preventing the tools from shaking during transportation; Place the device in the operating room where it is needed. Unfold the placement box 8. The air in the arc piston 406 enters the intermediate air box 201 through the air pipe. The locking rack 203 meshes with the locking gear 205, and the moving wheel 208 cannot rotate. At the same time, the locking rack 203 touches the first switch 207, and the air pump 6 stops. The vacuum suction cup 502 cannot fit the lower part of the tool. At the same time, the fixed pneumatic push rod 504 drives the fixed seat 504 to reset, stopping the fixation of the tool. The reset spring 508 resets, driving the fixed rod 501 to reset. The bottom end of the fixed rod 501 blocks the communication hole, and the cover plate 9 is removed, facilitating the medical staff to select tools for use.

[0027] The present invention and its embodiments have been described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural modes and embodiments similar to the technical solution without departing from the spirit of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A tray fixing device for operating room nursing, comprising a bottom plate (1), wherein one side of the top wall of the bottom plate (1) is fixedly connected with an air pump (6), and one side of the top wall of the bottom plate (1) is fixedly connected with a support column (3), characterized in that: A moving self-locking assembly (2) is connected to the bottom wall of the bottom plate (1). The moving self-locking assembly (2) is electrically connected to an air pump (6). Self-locking unfolding assemblies are symmetrically connected to the support columns (3). The self-locking unfolding assemblies are communicated with the moving self-locking assembly (2) through air pipes. A vacuum box (7) is connected to the self-locking unfolding assemblies. One side wall of the vacuum box (7) is communicated with the output end of the air pump (6) through an air pipe. A placing box (8) is fixedly connected to the top wall of the vacuum box (7). Vacuum fixing assemblies (5) are connected to the top wall of the vacuum box (7) in a rectangular array distribution, and the vacuum box (7) and the placing box (8) are communicated through the vacuum fixing assemblies (5). The self-locking unfolding assembly includes an unfolding unit (41), a ratchet lock (42) and a support unit (43). The unfolding unit (41) is connected to the circumferential wall of the support column (3). The support unit (42) is connected to the unfolding unit (41). The support unit (43) is connected to the ratchet lock (42).

2. The tray fixing device for operating room nursing according to claim 1, characterized in that: The unfolding unit (41) includes an unfolding seat (401), a fixing plate (403) and a driving plate (405). The unfolding seat (401) is rotatably sleeved on the support column (3). The other end of the unfolding seat (401) is fixedly connected to the side wall of the vacuum box (7). The side wall of the fixing plate (403) is fixedly connected to the circumferential wall of the support column (3). The side wall of the driving plate (405) is fixedly connected to the outer circumferential wall of the unfolding seat (401).

3. The tray fixing device for operating room nursing according to claim 2, wherein: An arc-shaped piston (406) is fixedly connected to the side wall of the fixing plate (403) and the side wall of the driving plate (405).

4. The tray fixing device for operating room nursing according to claim 3, characterized in that: The support unit (43) includes a sliding block (410), a moving rod (411) and a placing plate (412). The middle of the sliding block (410) is slidably connected to the driving plate (405). The moving rod (411) is longitudinally slidably connected to the sliding block (410). The bottom wall of the placing plate (412) is fixedly connected to the top end of the moving rod (411).

5. The tray fixing device for operating room nursing according to claim 1, characterized in that: The vacuum fixing assembly (5) includes a fixing rod (501) and a vacuum suction cup (502). The circumferential wall of the fixing rod (501) is longitudinally slidably connected to the vacuum box (7). The fixing rod (501) is hollow, and the placing box (8) and the vacuum box (7) are communicated through the hollow part of the fixing rod (501).

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