111 results about "General surgery specialty" patented technology

The invention relates to the technical field of medical treatment, in particular to an intelligent general surgery preoperative risk assessment system which comprises a data acquisition module, a data fusion and processing module, a feature extraction module, a risk assessment module, a prediction and optimization module and a visual display module. The data fusion and processing module adopts a multi-modal data fusion algorithm to generate a patient comprehensive information model, the feature extraction module extracts cardiovascular health status, renal function and tumor marker key features, and the risk assessment module constructs a preoperative risk assessment model to generate a preoperative risk score; the prediction and optimization module predicts the risk of postoperative complications, and the visual display module displays an evaluation result and a prediction result in real time through a graphical interface; according to the method, the accuracy and scientificity of preoperative risk assessment and postoperative complication prediction are remarkably improved, and reliable support is provided for postoperative management of patients.

The invention discloses a hernia belt for hernia treatment in the general surgery department, and belongs to the technical field of medical auxiliary instruments, the hernia belt comprises a fixing seat attached to the hernia part of a patient, elastic adjusting bandages made of elastic materials are fixedly connected to the two sides of the fixing seat, and hook-and-loop fasteners are fixedly sewn to the ends of the two elastic adjusting bandages; a through hole is formed in the middle position of the fixing seat, a pressure applying adjusting seat is elastically and slidably installed in the through hole of the fixing seat, a hernia bag is fixedly installed on the pressure applying adjusting seat, the hernia bag penetrates through the fixing seat and is attached to the hernia part of a patient, a containing groove is formed in the fixing seat, and the containing groove is communicated with the pressure applying adjusting seat. An adjusting piece is connected in the containing groove in the fixing base, and a first air bag is arranged between the adjusting piece and the containing groove. According to the hernia belt for hernia treatment in the general surgery department, pressurization fine adjustment can be carried out through the air bag, so that the wearing stability is improved, automatic adsorption can be carried out in the waist moving process, and position deviation and falling caused by movement are effectively avoided.

The invention relates to the technical field of medical informatization and intelligent nursing, in particular to a general surgery department patient postoperative complication risk prediction and nursing decision-making system, which comprises a baseline manifold construction module for initializing an individualized steady state manifold in a preset multi-dimensional state space based on historical operation parameters and basic state data; the perturbation response topology evaluation module is used for calculating a recovery attenuation coefficient after the real-time phase trajectory deviates from the individualized steady state manifold so as to generate a steady state dissipation index and a growth rate; the offset course quantity decoding module is used for adjusting a dynamic threshold value based on a time delay parameter and an embedded dimension parameter on the basis of the basic state data; the risk prediction module is used for weighting, merging and normalizing the growth rate of the steady-state dissipation index and the modulus length of the course deviation vector to generate a risk prediction evaluation result; the decision closed-loop module is used as a secondary perturbation variable and sends the secondary perturbation variable to the perturbation response topology evaluation module for continuous monitoring; according to the invention, the baseline anchoring precision in different clinical scenes is improved.

The invention discloses an intelligent patient data management method based on the general surgery department, and relates to the technical field of medical information processing, and the method comprises the steps: a multi-source patient data comprehensive collection step: collecting full-process multi-type data through four modes, and dynamically adjusting the collection frequency according to the data type; a data standardization preprocessing step: processing the data by adopting a cleaning algorithm; a structured storage and intelligent index construction step, wherein classified storage is carried out based on a mixed storage architecture; an intelligent data analysis step based on machine learning: constructing a multi-task model; a personalized medical intervention scheme generation step: generating a scheme in combination with an analysis result and a clinical guide; a data dynamic updating and real-time monitoring step: updating data in real time and monitoring key indexes; and a hierarchical authority management and data security guarantee step: distributing authorities according to roles. The method improves the integrity and efficiency of general surgery department patient data management, guarantees the data security and privacy, reduces the medical risk, and improves the rehabilitation effect of the patient.

The application discloses a general surgery operation trauma nursing device and belongs to the technical field of medical devices, which comprises a body, and a separation component is arranged on the inside and outside of an operating table, wherein the separation component comprises a collecting frame which is inserted into the operating table, a scraping ring is fixedly connected to the inside of the collecting frame, a protective cover is arranged in the operating table, and a driving motor is arranged in the protective cover. The magnetic block ring is arranged to adsorb metal foreign matters, and the rotating disc accelerates the flow of liquid after rotation, so that the foreign matters and necrotic tissues are quickly separated. Since the magnet ring can adsorb the metal foreign matters during rotation, the foreign matters and necrotic tissues are separated, the foreign matters carrying the necrotic tissues are prevented from sinking into the physiological saline and being difficult to separate, and the rotating disc only accelerates the flow speed of the physiological saline during stirring of the physiological saline, so that the over-dissolution of the necrotic tissues is reduced, and the separation effect of the foreign matters and the necrotic tissues is guaranteed.

The invention discloses an enterostomy fixing device for the general surgery department, and belongs to the technical field of enterostomy fixing, and the enterostomy fixing device comprises an automatic fixing device, a restraining and clamping assembly, a driving motor and a fixing base. In order to control the electromagnet to work, the trigger buttons are electrically connected with the electromagnet, the two sets of trigger buttons are arranged to be connected in series, and when the two sets of trigger buttons make contact with the inner wall of the rotating cylinder and the connecting pipe correspondingly, an internal circuit is controlled to be conducted, so that the magnetorheological fluid is converted into the solid-like characteristic, and the magnetorheological fluid is prevented from being damaged. The two sets of piston moving rods are difficult to drive the piston moving pieces to move, the effect that the trigger button does not move after fixing the connecting pipe is achieved, the multiple sets of automatic fixing devices can make contact with the uneven portions on the connecting pipe, all-directional fixing of the connecting pipe is achieved, and the connecting pipe can be fixed conveniently. The piston moving rod can also provide a protection effect on the connecting pipe in the action process for the patient through the magnetorheological fluid, and the connecting pipe can be prevented from being damaged while the connecting pipe is fixed.

This invention relates to the field of medical image processing and intelligent monitoring technology, specifically to a postoperative rehabilitation effect monitoring system for general surgery based on image enhancement. The system includes: a spatiotemporal feature decoupling step: constructing a dynamic deformation field model, decomposing time-series image data containing non-rigid deformation into a mechanical deformation feature layer and a physiological texture feature layer, and calculating the texture deformation decoupling coefficient; an illumination consistency normalization step: calculating the time-series illumination consistency variance, and performing illumination component correction on the time-series image data based on the variance; an adaptive texture enhancement step: performing weighted enhancement on the physiological texture feature layer according to the decoupling coefficient, generating an enhanced rehabilitation texture image; and an evolutionary trend analysis step: extracting the orderliness index of texture evolution based on the enhanced image, generating monitoring results. This invention effectively solves the interference of mechanical deformation on the analysis of microscopic healing textures, significantly improving the image signal-to-noise ratio and feature extraction accuracy.

The utility model discloses an intestine and stomach nursing device for general surgery. The intestine and stomach nursing device comprises a bottom plate, a fixed box connected to the top end of the bottom plate and two buckles connected to the two sides of the fixed box respectively. A liquid medicine groove is formed in the fixed box, a heating rod is mounted in the fixed box, six exhaust pipes are connected to the top end of the fixed box, a rotating rod is connected to the bottom end of each exhaust pipe, each rotating rod is rotatably connected to the interior of the bottom plate, a massage rod is slidably connected to the outer wall of each rotating rod, and massage beads are arranged in each massage rod. According to the gastrointestinal nursing device for general surgery, through the arrangement of the liquid medicine groove, the heating rod and the exhaust pipe, liquid medicine can be heated, heated steam enters the massage rod through the rotating rod, and therefore thermal spraying physiotherapy is conducted on the skin surface of a patient in the massage process, the comfort degree of the patient during massage is improved, and discomfort caused by single massage is reduced; the massage time is shortened; meanwhile, the wound recovery of the patient is ensured.

The invention discloses a clinical compression hemostasis device for the general surgery department, and relates to the technical field of medical instruments. The clinical compression hemostasis device for the general surgery department comprises a clamping mechanism, a clamping block, a sliding piece, an air bag, an inflation device and a locking mechanism. The clamping mechanism comprises two clamping ends capable of relatively moving and a driving assembly for driving the two clamping ends to be close to or far away from each other, and the driving assembly can lock and maintain the relative positions of the two clamping ends so as to resist separating force which is applied externally and enables the two clamping ends to be far away from each other; the two clamping blocks are oppositely arranged and connected to the two clamping ends of the clamping mechanism correspondingly. The two sliding pieces are in sliding connection with the two clamping blocks in the clamping face directions of the clamping blocks correspondingly. The number of the air bags is two. The clinical compression hemostasis device for the general surgery department can be firmly locked in a compression state, prevents the compression unit from accidentally loosening, and supports flexible adjustment of the action area of the compression unit according to the wound position.

1. The name of this design product: dressing tray. 2. Purpose of this design product: used for general surgery patient care and dressing change. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

1. Name of the product in this design: Vascular clamp. 2. Purpose of this design: To close blood vessels or tissues during general surgery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

This invention discloses a portable outdoor wound cleaning kit for general surgery, relating to the field of medical wound cleaning equipment technology. The kit includes a box body with an internal flipping mechanism to reduce the outward diffusion of contaminants. The flipping mechanism also includes a scraping mechanism to reduce contaminant residue. Furthermore, the box body has a limiting mechanism to prevent the flipping mechanism from shaking, and an external support mechanism to prevent the box body from tilting. Through the flipping mechanism, all rinsing fluid, blood, and waste tissue are effectively collected by a semi-circular plate. After operation, driven by a gear and rack, the semi-circular plate flips to completely trap the contaminants inside the box. Combined with the closed top cover, this forms a sealed, isolated space, blocking the diffusion path of contaminants to the external environment. This not only protects uninjured areas of the patient from cross-infection but also ensures the operational safety of medical personnel, addressing the pain point of poor sterility in outdoor settings.

The invention relates to the technical field of medical equipment, in particular to a general surgery department wound cleaning and medicine applying device which comprises a connecting seat, the connecting seat is of an annular structure, a notch is formed in the upper end of the connecting seat, a fixing seat is fixedly connected to the lower end of the connecting seat, and a liquid receiving mechanism is installed on the fixing seat and comprises a main plate. The main plate is of an arc-shaped structure and abuts against one side of the connecting base, the lower end of the main plate is fixedly connected with a rotating plate, the rotating plate is rotationally connected to the fixing base, the lower end of the main plate is fixedly connected with sleeve plates symmetrical about the rotating plate, and the lower end of the connecting base is fixedly connected with two fixing plates; the two fixed plates and the rotating plate are located on the same center line. The main plate of the liquid receiving mechanism can flexibly turn over around the rotating plate to adapt to a bedridden patient, the angle is locked through cooperation of the positioning plate and the sliding plate, the liquid receiving area can be expanded by means of the auxiliary plate, and it is ensured that cleaning waste liquid flowing along limbs can be accurately received without standing of the patient.

The utility model belongs to the technical field of rehabilitation nursing, and provides a general surgery department rehabilitation nursing moving device which comprises an installation seat plate, an installation groove is formed in the left side of the installation seat plate, power assemblies are rotationally installed on the two inner side walls of the installation groove, connecting rings are fixedly connected to the power assemblies in a sleeved mode, and supporting adjusting assemblies are fixedly connected to the connecting rings. First guardrails are symmetrically connected to the supporting and adjusting assembly, second guardrails are symmetrically connected to the front side and the rear side of the mounting seat plate, a fixing plate is connected to the second guardrails, a mounting box is mounted on the fixing plate, a hand exercise assembly is mounted in the mounting box, a nursing arc-shaped plate is connected to the top wall of the mounting box, and a seat backup plate is movably mounted on the right side of the mounting seat plate. The purpose of exercising hands is achieved through the arranged hand exercising assembly, and the overall functionality is improved; and the support adjusting assembly can adjust the whole length of the leg support, so that the overall practicability is improved.

The debridement device for the general surgery department particularly relates to the technical field of medical equipment and comprises a shell, a debridement pool is arranged at the upper end of the shell, a stirring mechanism is arranged in the middle of an inner cavity of the shell, a medicine feeding mechanism is arranged on the left portion of the inner cavity of the shell, and a liquid storage tank is fixedly installed at the upper ends of two supporting rods. And the upper end of the liquid storage tank is fixedly connected with a liquid pump. According to the debridement device for the general surgery department, through the arrangement of the medicine feeding mechanism and the stirring mechanism, when the stirring mechanism works, through the gear meshing transmission principle, a first rotating shaft can drive a second rotating shaft to rotate by a circle every time the first rotating shaft rotates by a plurality of circles; therefore, the limiting groove in the surface of the limiting barrel drives the movable block to move up and down in the cylindrical barrel in a reciprocating manner, so that the disinfectant can be intermittently discharged into the stirring tank, the purpose of discharging the disinfected waste liquid is achieved under the synchronous stirring of the stirring mechanism, and the potential safety hazard of waste liquid discharging is reduced.

The invention relates to the technical field of medical instruments, in particular to a disposable surgical drainage system with an image processing function, which comprises a drainage tube body, a visual component, a near-end connecting structure, a mobile terminal adaptation module and an AI image analysis module, the system aims at solving the technical problems that an existing medical drainage tube is single in function, depends on external imaging equipment for positioning in the implantation process and is prone to causing tissue damage during operation. The drainage tube is technically characterized in that a miniature 4K camera module and an LED lighting source are integrated at the tip of the drainage tube body, and tissue images in front of the tube end can be acquired and transmitted in real time; and the AI image analysis module is matched to complete lesion related parameter acquisition and property auxiliary discrimination. A doctor can directly observe a drainage path and a target area through external equipment and synchronously obtain auxiliary evaluation information. Accurate and safe catheter indwelling and auxiliary diagnosis are achieved. The device is mainly used for clinical drainage operations and bedside monitoring in neurosurgery, general surgery, thoracic surgery, cardiac surgery and abdominal surgery.

1. Name of the product in this design: Irrigator (for general surgery). 2. Intended use of this design: for general surgical medical use, handheld irrigation. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present application relates to the technical field of medical devices, and specifically discloses a wound hemostasis device for general surgery clinical operation, which comprises a base and further comprises: a hemostasis assembly arranged on the base and used for compressing and hemostasis of a patient's wound; and a control assembly arranged on the hemostasis assembly and used for adjusting the compression force of the hemostasis assembly on the wound. The hemostasis assembly can conveniently aim at the patient's wound, preventing the compression position from deviating and affecting the compression hemostasis effect. The control assembly can reduce the compression force on the patient's wound every set time during the compression hemostasis of the patient's wound, preventing the patient from being uncomfortable due to long-time compression on the wound. When the compression force is reduced, if bleeding occurs, the compression force on the wound can be adjusted according to the hemostasis condition, so as to ensure the compression hemostasis of the wound.

The utility model discloses a debridement table for the general surgery department and relates to the technical field of the general surgery department. The debridement table for the general surgery department comprises a rectangular frame, a lifting mechanism and a clamping mechanism, a lifting plate is arranged over the rectangular frame, a water pool is arranged over the lifting plate, the clamping mechanism is arranged between the lifting plate and the water pool and comprises clamping plates, clamping sleeves and clamping grooves, and the two clamping plates are fixedly installed at the top of the lifting plate; the outer surfaces of the two sides of the water pool are each fixedly provided with a set of clamping sleeves, the bottoms of the two sets of clamping sleeves are each provided with a set of clamping grooves, and the two sets of clamping plates are clamped into the corresponding clamping grooves. According to the debridement table for the general surgery department, through cooperation of the lifting plate, the water pool and the clamping mechanism, the water pool can be independently detached, the flexibility is high, the debridement table can be conveniently placed in disinfection equipment to be independently subjected to high-temperature disinfection treatment, and then the practicability of the debridement table is improved.

The invention relates to the technical field of surgical drainage, in particular to a drainage device and method used after general surgery department nursing operation, the drainage device comprises a drainage tube and a rack, a drainage boosting assembly is arranged on the inner wall of the drainage tube, and the drainage boosting assembly comprises a plurality of clamping grooves formed in the outer wall of the drainage tube at equal intervals; wave air bag ring assemblies are arranged on the inner sides of the multiple clamping grooves, each wave air bag ring assembly comprises a first annular air bag and an eleventh annular air bag which are sequentially arranged in the corresponding clamping groove in a sleeved mode, and air cavities are formed in the first annular air bags and the eleventh annular air bags, so that harmonious peristaltic waves can be generated for the drainage tube; the drainage effect of the drainage tube is improved, the hole distance of the side holes can be adjusted in real time according to the postoperative drainage condition, tissue ingrowth is effectively prevented, early soft blockage is relieved, the drainage environment is further disturbed, static attachment is prevented, and the overall drainage efficiency and quality of the device are guaranteed.

1. The name of the design product: monitor (for general surgery department). 2. The use of the design product: monitor for monitoring patients. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention discloses an operative wound nursing instrument, and relates to the technical field of general surgery department operations, the operative wound nursing instrument comprises a pair of bases, a cleaning and disinfecting assembly capable of being automatically adjusted is installed between the pair of bases, the bottom ends of the pair of bases are fixedly connected with supporting legs, and the front surface of the base on one side is provided with a control panel. Through cooperation of all parts, disinfectant in a liquid storage box is injected into a cavity block through a hose and then sprayed out of a spray head to clean a focus, meanwhile, a first motor drives a lead screw to rotate, a transmission sliding block enables the spray head to move transversely, large-range cleaning is achieved, and during the period, a sensor probe monitors the distance between the spray head and the focus, and an instruction is sent when the distance changes; the distance is adjusted through the electric push rod, the nozzle angle is adjusted through the second motor, the nozzle track and the focus radian are matched, the distance is constant, a flexible mechanism does not need to be adjusted complexly, operation is simpler, and the treatment waiting time of a patient is not prolonged.

The utility model relates to the technical field of medical equipment, and provides a general surgery wound cleaning device which comprises a bottom frame and a pair of side frames, the side frames are arranged on the two sides of the bottom frame, the supporting and adjusting assembly is arranged between the bottom frame and the side frames, the disinfectant box is arranged on the outer surface of the bottom frame, and the disinfectant box is arranged on the outer surface of the bottom frame. The washing assembly is arranged on the bottom frame and comprises a sleeve groove, the sleeve groove is formed in the top of the bottom frame, an anti-falling sleeve is arranged at the top of the bottom frame, a pair of inner rods are arranged in the bottom frame, the inner rods are slidably connected with a lifting frame in a sleeving mode, and a through opening is formed in the top of the lifting frame. And the bottom of the lifting frame is rotationally connected with a nozzle through a pin shaft. By means of the technical scheme, the problems that in the prior art, effective chemical control quantity treatment cannot be well conducted during flow control, and a large amount of cleaning waste liquid is generated in the wound cleaning process and is not easy to clean are solved.

The invention discloses a general surgery department thyroid neck plasma drainage apparatus, and belongs to the technical field of medical instruments, the general surgery department thyroid neck plasma drainage apparatus comprises a liquid collection bin, a three-way joint, a miniature negative pressure pump and a flexible drainage tube, the top of the flexible drainage tube is provided with a porous drainage secondary head, the top of the porous drainage secondary head is fixedly connected with a main drainage head, the three-way connector is installed at the top of the liquid collecting bin, and the two sides of the three-way connector are connected with the micro negative pressure pump and the flexible drainage tube respectively; a two-stage drainage end composed of a main drainage head and a porous drainage secondary head is arranged, and the surface of the two-stage drainage end is coated with a hydrophilic coating, so that the effective drainage area is remarkably increased, attachment of protein and blood cells is reduced, and early coagulation blockage is effectively prevented; the interior of the drainage tube is divided into the main drainage cavity and the independent flushing cavity, when drainage is slowed down, medical staff can inject normal saline to conduct noninvasive flushing by connecting an external connection tube with an injector, smoothness can be recovered without pulling out the tube, and secondary trauma is avoided.

The application relates to the technical field of electric digital data processing, and discloses a big data fast indexing and querying system based on general surgery diagnosis and treatment characteristics, which comprises a data stream acquisition module, a topological sequence reorganization module, a physical space mapping module, an index key synthesis module and a preloading execution engine; the topological sequence reorganization module analyzes heterogeneous diagnosis and treatment data streams and reorganizes the data streams into logically continuous patient whole-course data aggregates; the physical space mapping module sequentially maps the aggregates to a continuous physical address space of a bottom-layer storage; the index key synthesis module generates composite index items according to physical address offsets among data blocks; and the preloading execution engine drives the bottom-layer storage to burst read, the application converts cross-modal diagnosis and treatment correlation queries into one-way sequential reading of the storage, reduces the track delay and access overhead in the searching process, and guarantees the searching response delay certainty under the condition that the data volume continuously grows.

The invention provides an antibacterial fiber wound suture containing cannabidiol and a preparation method. According to the wound suture line, degradable antibacterial fibers serve as a base material, the antibacterial fibers are subjected to graft modification through cationic reagents such as quaternary ammonium salt, and positive charge sites are introduced to the surfaces of the fibers. Cannabidiol is mixed with polyethylene glycol, glycerin and the like, so that the polarity of cannabidiol is improved. Then, the cannabidiol is preliminarily attached to the antibacterial fibers through electrostatic adsorption, and then the antibacterial fibers are baked at the temperature of 40-60 DEG C for 10-15 min. According to the method, cannabidiol can be stably attached to the antibacterial fibers, so that the wound suture line with a stable drug effect is formed. The wound suture line is suitable for surgical suture, in the wound healing process of the suture line, the antibacterial fiber prevents infection, cannabidiol can relieve inflammation and pain, promote wound healing and reduce pain when the suture line is removed, and the wound suture line can be used for general surgery, obstetrics and gynecology and other surgeries.

The invention discloses a general surgery department diagnosis and treatment data intelligent processing method and system based on AI in the technical field of medical care information, and the method comprises the steps: obtaining first diagnosis and treatment data of a sample, processing the first diagnosis and treatment data based on a data processing method, and obtaining second diagnosis and treatment data, the second diagnosis and treatment data are numerical vectors; obtaining a plurality of features in the second diagnosis and treatment data to obtain basic features, setting an association relationship among the plurality of features, taking the features as nodes of the association relationship, and constructing a target heterogeneous graph of the sample; dividing a central node and a neighbor node corresponding to the central node for the node, and distributing a criticality score to the neighbor node. According to the method, the association relationship is set to connect different features, meanwhile, the heterograph is formed to express the association among the patient features, and the risk prediction model of the operative complications is constructed in a matched manner, so that the risk of the complications of one operation can be effectively predicted.

The invention discloses a clinical wound surface disinfection device for the general surgery department, and belongs to the field of wound surface disinfection. An anti-skid layer is arranged on the outer surface of the supporting barrel, a conical barrel is arranged on the lower surface of the anti-skid layer, and a sliding sleeve is slidably mounted on the inner surface of the conical barrel and made of plastic. A plurality of sliding sleeves with disinfection cotton pads can be mounted in a supporting cylinder, and after the single sliding sleeve with the disinfection cotton pad is used, a threaded rod drives a sliding pressing disc to extrude a stress plate, so that the next sliding sleeve with a protective shell extrudes the used sliding sleeve from the interior of a conical cylinder; the disinfection cotton pad can be quickly replaced, so that the efficiency of disinfecting a plurality of wound surfaces by a doctor is improved, and the doctor can use the disinfection device more conveniently and quickly; through the arrangement of the liquid storage soft bag, the disinfectant can be stored in the liquid storage soft bag before the disinfection cotton pad is used for disinfection and debridement, and the disinfectant is prevented from leaking and being polluted.

The present application relates to a kind of general surgery operation free pneumoperitoneum abdominal wall suspension device in abdominal cavity, comprising: main body, lug and inner suspension assembly;Inner suspension assembly includes: multiple support plates that are inserted into abdominal cavity wound and hoist abdominal wall in abdominal cavity from inside;A kind of general surgery operation free pneumoperitoneum abdominal wall suspension device in abdominal cavity also includes: for adsorbing skin to externally assist suspension pneumatic chuck;Support plate is rotatably installed to main body;Support plate has retracted position and unfolded position relative to main body;Support plate rotates between retracted position and unfolded position;When in retracted position, in the radial direction of main body, support plate does not extend the outer surface of main body;When in unfolded position, in the radial direction of main body, support plate extends the outer surface of main body for contact with abdominal wall to hoist abdominal wall in abdominal cavity from inside.The beneficial effects of the present application are: multiple support plates can be unfolded simultaneously by rotating knob, and multiple support plates do not need to be installed in sequence.