30 results about "Peripherally inserted central catheter" patented technology

The utility model relates to the technical field of medical equipment, in particular to a PICC catheter fixing device which comprises a driving wrist guard plate, a driven wrist guard plate, an adjusting bandage and a PICC catheter body, the driving wrist guard plate and the driven wrist guard plate are connected through the adjusting bandage, wire arrangement grooves are formed in the upper surface of the driving wrist guard plate and the upper surface of the driven wrist guard plate at equal intervals, and the PICC catheter body is arranged in the wire arrangement grooves. The PICC catheter fixing device comprises a PICC catheter body, a driven wrist guard plate is arranged on the PICC catheter body, a limiting clamping plate is rotationally installed on the driven wrist guard plate, the PICC catheter body is clamped in a wire arrangement groove, fixing assemblies are symmetrically arranged on the limiting clamping plate, and the fixing assemblies are used for fixing the end of the PICC catheter body. By means of the innovation point, orderly and reasonable wire arrangement of the PICC catheter body can be achieved, the problem that wire arrangement of the catheter is disordered is effectively avoided, inconvenience possibly caused to a patient due to improper arrangement of the catheter is eliminated, and extremely high practicability is manifested.

The invention relates to an integrated nursing device for eliminating thrombus in a PICC (Peripherally Inserted Central Catheter) by ultrasonic waves, which belongs to the technical field of medical instruments and comprises a handheld host and a disposable treatment head. A venturi negative pressure generating unit and a flushing fluid power unit are integrated in the handheld host. The disposable treatment head comprises a multi-section flexible connection structure capable of self-adapting to bending of the catheter, a miniature ultrasonic suppository breaking unit capable of achieving cross interference focusing based on a single crystal wafer and a reflection cavity, and a multi-layer coaxial cavity structure capable of achieving synchronous suction and flushing. When the device works, ultrasonic energy directly acts on thrombus in a catheter to efficiently crush the thrombus, meanwhile, fragments are removed in time through negative pressure generated by the Venturi effect, and visual state indication is provided through the mechanical feedback unit. The problems that a traditional method is low in efficiency, complex in operation and asynchronous in fragment removal are solved, and safe, efficient and convenient integrated catheter thrombus removal is achieved.

The utility model discloses an improved PICC (Peripherally Inserted Central Catheter) pasting film convenient to fix, which relates to the technical field of medical instruments and comprises a pasting film body, a circular groove is formed in the pasting film body, a gasket is fixedly mounted at the bottom end of the pasting film body and is positioned at the bottom end of the circular groove, a through groove is formed in the gasket, a catheter groove is formed in the bottom end of the pasting film body, and a through hole is formed in the catheter groove. The PICC puncture film pasting device has the advantages that due to the arrangement of the catheter groove and the through groove, when a PICC puncture opening of a patient needs to be pasted with a film, all that is needed is to make the aseptic cotton make contact with the PICC puncture opening, then a PICC is poured out along the through groove and the catheter groove, and then a PICC connector is placed below the third adhesive tape to be fixed; by means of the arrangement of the process, fixing can be conveniently carried out, and the indwelling tube can not fall off or infect a tube puncture inlet when the membrane is replaced.

The utility model discloses a PICC (Peripherally Inserted Central Catheter) arm circumference measuring scale, which comprises a measuring tape, the measuring tape comprises a shell and a measuring tape wound in the shell, the width of the measuring tape is 1cm, front scale marks are printed on the front surface of the measuring tape, auxiliary scale marks used for measuring the arm circumference of an upper limb are also printed on the front surface of the measuring tape, and a telescopic measuring scale is arranged on one side of the shell of the measuring tape. The tail end of the telescopic ruler is an elbow cross grain mark, and an outlet of the tape is arranged below the telescopic ruler, so that the tape is prevented from being rolled and folded during use. The measuring tape has the advantages that by optimizing the structure of a traditional measuring tape, the measuring tape is convenient to store, meanwhile, the telescopic measuring tape is arranged, different measuring functions are conveniently achieved, different measuring requirements are met, and special upper arm circumference measurement for PICC can be achieved.

The invention relates to the technical field of medical body fixing devices, and discloses a universal adjustable locking PICC (peripherally inserted central catheter) arm supporting device which comprises an arm supporting plate, a universal adjusting mechanism and a fixing clamp, the arm supporting plate is mounted on the fixing clamp through the universal adjusting mechanism, and the fixing clamp is used for fixing the PICC arm supporting device beside a sickbed; according to the PICC catheterization arm supporting device, by arranging the universal adjusting mechanism, multi-dimensional accurate adjustment and stable supporting are achieved, the height of the arm supporting plate can be adjusted, and the direction can be rotatably changed through the locking sleeve and the lifting rod; through the swing adjusting assembly and the multi-direction deflection adjusting assembly, the arm supporting plate has the local large-angle swing adjusting function and the small-angle multi-direction deflection adjusting function, the position can be locked through the universal adjusting mechanism, shaking is avoided, and the effects of multi-dimensional flexible adjusting and reliable locking performance are achieved; and different angle requirements of supporting arms of patients with different body characteristics before PICC (Peripherally Inserted Central Catheter) catheterization can be met.

The utility model discloses an intelligent PICC catheter positioning device which comprises a fixing plate, symmetrical limiting through holes are formed in the front face of the fixing plate, heating pipes are installed in the two limiting through holes, a catheter body is arranged in the fixing plate, a controller is installed on the upper surface of the fixing plate, and the heating pipes are connected with the controller. A heart rate monitor is arranged in the fixing plate, a protective pad is fixedly connected to the bottom face of the fixing plate, the catheter body comprises an infusion tube, a catheter needle is arranged at the front end of the infusion tube, a connector is arranged at the rear end of the infusion tube, a fastening ring is fixedly connected to the rear end of the connector, and a display screen is arranged on the upper surface of the controller. And an operation button is arranged on the upper surface of the controller. The heart rate of a patient can be displayed in real time through the display screen, the heart rate of the patient can be monitored in real time through cooperation of the heart rate monitor and the monitoring probe, the intelligence and safety of the equipment are improved, and workers can use the equipment conveniently.

The utility model discloses a PICC (Peripherally Inserted Central Catheter) fixing piece which comprises a protective plate, a bonding strip is arranged on the side of one end of the protective plate, air holes are formed in the protective plate, a catheter bottom sheath is arranged on the side, opposite to the bonding strip, of the protective plate, a catheter top sheath is connected to the upper end of the catheter bottom sheath, and a positioning rod is arranged on the side, located on the catheter bottom sheath, of the protective plate. The PICC protection plate has the advantages that when the PICC protection plate is used, the protection plate is located on the skin of a patient and is erected through the bonding strips, normal ventilation of the skin of the patient can be facilitated through the ventilation holes, the catheter top protection sleeve is combined on the catheter bottom protection sleeve through the trapezoidal sliding block, and therefore the PICC protection plate is convenient to use. The head of the PICC catheter can be fixed, the tail of the PICC catheter is fixed through the positioning rod, the structure is compact, operation is convenient, and later dismounting is convenient.

The utility model relates to the technical field of medical supplies, in particular to a PICC (Peripherally Inserted Central Catheter) universal protective sleeve which comprises a wear-resistant nylon sheath, a through visible puncture opening is formed in the front part of the outer surface of the wear-resistant nylon sheath, and a waterproof polyurethane coating is coated on the inner wall of the wear-resistant nylon sheath. The inner wall of the waterproof polyurethane coating is fixedly connected with a skin-friendly cotton gauze inner sleeve layer, the inner wall of the skin-friendly cotton gauze inner sleeve layer is coated with an antibacterial silver ion fiber layer, the front portion of the outer surface of the wear-resistant nylon sheath is fixedly connected with an outer hard hook-and-loop fastener, and the visual puncture opening is located on the inner side of the outer hard hook-and-loop fastener. The PICC universal protective sleeve has the advantages that the PICC universal protective sleeve is provided with an adjustable fixing structure which can be adaptive to limbs with different thicknesses and can be stably fixed, the conditions of a catheter and a puncture part can be conveniently observed by the aid of a visual operation component, the internal multi-layer protective structure has the advantages of waterproofness, skin friendliness, antibiosis and the like, and the PICC universal protective sleeve can comprehensively guarantee the use safety of the PICC and the comfort level of a patient.

The utility model relates to a PICC (Peripherally Inserted Central Catheter) pipeline protection device which comprises a nursing sleeve and a catheter fixer, adjustable elastic fasteners are symmetrically arranged on the outer walls of the two ends of the nursing sleeve; a catheter fixator is fixed to the outer wall of the center of the nursing sleeve, and a nursing sleeve crevasse is formed between the catheter fixator and the adjustable elastic hook-and-loop fastener. The top of the catheter fixer is connected with a PICC positive pressure joint; the PICC positive pressure connector is connected with a PICC catheter, one end of the PICC catheter is connected with the PICC positive pressure connector, and the other end of the PICC catheter extends into the nursing sleeve through the nursing sleeve crevasse. The PICC catheter has the advantages that the tightness-adjustable thread gluing technology is adopted, the situation that a catheter cannot be completely wrapped by the curled edge of the net sleeve due to the fact that the net sleeve rubs when clothes are put on and taken off is effectively improved, and the PICC catheter is suitable for any patient needing to use the PICC catheter in clinic; by arranging the crevasse and the integrated PICC fixing device on the nursing sleeve, the PICC is rapidly fixed and can be rapidly separated under the condition that the nursing sleeve is not removed, and the efficiency of replacing auxiliary materials is improved.

The utility model relates to a PICC (Peripherally Inserted Central Catheter) treatment vehicle with a limb fixing device, comprising: a vehicle body, the middle of which is provided with a hollow layer, and the hollow layer is internally provided with a connecting column extending along the vertical direction; the limb fixing assembly comprises a bearing plate, a drawing plate and a limiting piece; the bearing plate comprises a bottom plate and connecting parts, the connecting parts are arranged on the two sides of the bottom plate respectively, and the connecting parts are movably connected to the connecting columns in the vertical direction; guide grooves extending in the horizontal direction are formed in the side face of the connecting part, and the two sides of the drawing plate are inserted into the guide grooves correspondingly, so that the drawing plate is movably connected with the connecting part in the horizontal direction. Limiting pieces are arranged at the two ends of the connecting part respectively, and limiting holes matched with the limiting pieces are formed in the two ends of the drawing plate respectively. One end of the vertical adjusting device is connected with the vehicle body, and the other end of the vertical adjusting device is connected with the bearing plate. The left arm and the right arm can be selected at the same time, and the corresponding arms can be supported.

1. The name of the design product: PICC puncture point protection box. 2. The use of the design product: for protecting the auxiliary protection box of the peripherally inserted central catheter (PICC). 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model relates to a peripheral central venous catheter, in particular to a buckling connection seat for the peripheral central venous catheter, which comprises a buckling seat, a buckling tube is slidably connected in the buckling seat, a clamping ball is movably connected in the buckling seat, the clamping ball is movably connected in the buckling tube, the outer wall of the buckling seat is slidably connected with a limiting sleeve, and the limiting sleeve is movably connected in the buckling tube. The outer wall of the buckling seat is sleeved with a first spring, one end of the first spring is fixedly connected to the interior of the limiting sleeve, and the other end of the first spring is fixedly connected to the interior of the buckling seat. According to the detachable venous catheter, the limiting sleeve slides downwards, so that the clamping ball slides outwards to be separated from the interior of the buckling pipe, at the moment, the buckling pipe can be detached, the in-vitro pipe and the in-vivo pipe can be detached from the interiors of the buckling pipe and the buckling seat respectively by rotating the in-vitro pipe and the in-vivo pipe, and the detachable venous catheter is achieved; therefore, in-vitro pipes and in-vivo pipes with different lengths can be spliced in an auxiliary manner.

The utility model belongs to the technical field of medical instruments, and particularly relates to an inflatable PICC (Peripherally Inserted Central Catheter) protection device which comprises a device main body, a bandage and an air bag, the device body is of a circular-arc-shaped tile-shaped structure, the bandages which can be matched with each other are fixed to the two sides of the device body, and the air bag is fixed to the circular-arc-shaped face of the inner side of the device body. The bandage is made of a flexible material; the bandages on the two sides of the device body can be connected in a matched mode, and the device body is buckled and fixed to the catheterization position of a patient. The air bag is of an annular structure, and an air nozzle is arranged on the air bag. After the protection device is worn, the air bag is located on the periphery of a catheter of a patient. The protection device can achieve daily rubbing, collision and unsmooth limb blood circulation prevention and has a waterproof effect when a patient takes a bath, and the protection device is simple in structure and convenient to wear by the patient.

1. Name of the product in this design: Conduit Fixation Strap (PICC). 2. Purpose of this design: For fixing PICC catheters. 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.

1. The name of the design product: fixed tube device (PICC tube). 2. The use of the design product: device for fixing PICC catheter. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model discloses an auxiliary device for replacing a PICC (Peripherally Inserted Central Catheter) patch. The auxiliary device comprises a movable base, a bracket, a universal connecting pipe and a disinfection and heat preservation mechanism, the bottom of the support is fixedly connected with the top of the movable base, the top of the support is connected with one end of the universal connecting pipe, and the disinfection and heat preservation mechanism comprises a base, a temperature-adjustable baking lamp and a disinfection gas supply assembly; the top of the base is connected with the other end of the universal connecting pipe; the temperature-adjustable baking lamp is mounted at the bottom of the base; the disinfection gas supply assembly is provided with a plurality of medicine bag placing tanks; the top of each medicine bag containing tank is detachably connected with the four corners of the bottom of the base. A sterilization and disinfection traditional Chinese medicine bag is placed in each medicine bag placing tank; and a plurality of fine air holes are formed in the bottom of each medicine bag placing tank. When the PICC patch is replaced, the temperature of a PICC indwelling tube area can be maintained, residual mucilage glue of an old patch can be reduced, the drying waiting time of disinfectant can be shortened, bacteria are prevented from being concentrated on a puncture opening, and the infection risk is reduced.

1. Name of the product in this design: Catheter Fixator (PICC). 2. Purpose of this design: For use as a PICC catheter fixation device. 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.

1. The name of the design product: PICC presser. 2. The use of the design product: used for pressing the external leakage port after PICC catheterization to prevent body fluid leakage. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention belongs to the technical field of medical instruments, and particularly relates to a PICC (peripherally inserted central catheter) protection device which comprises a first hoop and a second hoop, the second hoop is arranged at one end of the first hoop, a protection layer is fixed at one end, close to the second hoop, of the first hoop and connected with the second hoop, and the PICC protection device further comprises a supporting assembly and a fixing assembly. The supporting assembly is assembled between the first hoop sleeve and the second hoop sleeve and located in the protective layer, the supporting assembly comprises a plurality of keels, the keels are annularly arrayed between the first hoop sleeve and the second hoop sleeve, the first hoop sleeve and the keels are fixedly connected, and the second hoop sleeve and the keels are fixedly connected. The first hoop sleeve, the second hoop sleeve, the protective layer and the keels form a physical barrier of a lantern-like structure by rotating the hoop ring, clothes are isolated from the input end of the PICC pipe, the PICC pipe is prevented from being rubbed and hooked when the clothes are put on and taken off, the input end of the PICC pipe is effectively protected, and displacement of the pipe is avoided.

The utility model discloses a PICC (Peripherally Inserted Central Catheter) guide needle frame structure convenient to fix, which relates to the technical field of medical appliances and comprises a probe, a fixing mechanism is arranged on the outer surface of the probe and comprises a top plate, the top plate is movably connected with the bottom surface of the probe, the bottom surface of the top plate is rotatably connected with a first knob, and a second knob is arranged on the bottom surface of the top plate. The outer surface of the first knob is in threaded connection with a bottom plate, the side face of the bottom plate is fixedly connected with an outer frame, and the interior of the side face of the outer frame is in threaded connection with a second knob. Through the cooperation of the top plate, the first knob and the bottom plate, when the outer frame is placed on the outer surface of a probe, the outer frame can be jacked up by rotating the first knob, the device can be fixed on the outer surface of the probe through the outer frame and the upper fixing plate, the device is prevented from sliding up and down, and the probe is clamped by the left side clamping plate and the right side clamping plate by rotating the second knob. And meanwhile, the needle head clamping device on the top surface can be adjusted to a central position, so that a position where a needle needs to be inserted can be found conveniently.

The utility model relates to a grip ball for PICC (Peripherally Inserted Central Catheter) catheterization training, which comprises a grip ball body, fingerstalls are fixedly connected to the outer surface of the grip ball body, a pressed table is fixedly connected to the surface of the grip ball body, and a display screen is fixedly connected to the front side of the pressed table; the inner wall of the grip ball is fixedly connected with a contact column and a limiting column, the surface of the limiting column is sleeved with a first connecting plate, the left end of the first connecting plate is fixedly connected with a contact sensor, the right end of the first connecting plate is fixedly connected with a first buffer spring, and the inner wall of the grip ball is fixedly connected with a pressing column. A limiting sleeve is fixedly connected to the inner wall of the grip ball, a second connecting plate is slidably connected into the limiting sleeve, and a pressure sensor is fixedly connected to the left end of the second connecting plate. The contact sensor and the pressure sensor are electrically connected with a circuit of the display screen. When a patient uses the grip strength ball for PICC (peripherally inserted central catheter) catheterization training, the strength and the frequency of grip strength training of the patient each time can be detected, and rehabilitation training of the patient is well assisted.

The utility model provides a full-transparent PICC (Peripherally Inserted Central Catheter) maximum sterile barrier sterile sheet, which relates to the technical field of medical instruments, and comprises a sterile component, the sterile component consists of a sterile sheet and a visible film, an operation opening is formed in the sterile sheet, and the visible film is arranged in the operation opening; the anti-skid rubber pad is arranged at the bottom of the sterile assembly; thickening cotton is arranged at the bottom of the sterile assembly, due to the fact that in the use process, the rest parts near the puncture need to be observed, medical staff can more visually check the conditions of surrounding blood vessels and the like during puncture work under the action of the visual film, and the medical staff can further fix the visual film under the action of the adhesive tape, so that the medical staff can conveniently use the medical staff. In the using process, the visual film can be folded into the specified width according to the requirement of the operation opening, and the visual film is limited and fixed through mutual adhesion between the adhesive piece and the adhesive sticker, so that displacement of the visual film in the using process is avoided.

The utility model provides a multifunctional hand-muscle developer for a PICC (Peripherally Inserted Central Catheter) catheterization patient, which comprises two spherical pressure structures and a holding component arranged on the outer surfaces of the pressure structures, the holding assembly comprises a palm pressing part arranged at the top of the sphere center of the pressure structure and a finger holding part arranged on one side of the palm pressing part, a plurality of abutting parts corresponding to the finger holding part are arranged on the outer surface of the pressure structure at equal intervals, and the finger holding part comprises a four-finger structure and a thumb structure; an induction lamp structure electrically connected with the pressure sensor is further arranged at the finger gap of the four-finger structure, a pressure displayer electrically connected with the pressure sensor is further arranged on the outer surface of the pressure structure, and the pressure displayer is arranged on the side, away from the palm pressing part, of the sphere center; and a button is arranged on one side, far away from the finger holding part, of the pressure display.

The utility model relates to the technical field of medical supplies, in particular to a PICC (Peripherally Inserted Central Catheter) fixing film with an arm circumference measuring scale, which solves the problems that the PICC fixing film cannot measure the arm circumference and the operation is inconvenient when a catheter is fixed by the fixing film, and comprises a fixing film, a graduated scale and a first buckle, due to the fact that the catheter penetrating hole is formed, a catheter on a limb of a patient can penetrate through the catheter penetrating hole conveniently, the catheter penetrating hole can be completely exposed by separating the split, and after a port of the catheter penetrates through the catheter penetrating hole, the two sides of the split can be attached to the surface of the limb of the patient. The catheter can be clamped in the first buckle to be fixed, it is guaranteed that the catheter is accurately and safely fixed, the graduated scale and the fixing film can surround the limb of the patient together, and in other words, the arm circumference information of the limb of the patient can be visually seen while the fixing film is attached.

The utility model provides a waterproof protective sleeve for a patient with a femoral vein embedded with a PICC catheter, relates to the technical field of medical instruments, and aims to solve the technical problem that in the prior art, the patient with the femoral vein with the catheter in the middle section of the thigh of the lower limb is difficult to bathe. An arc-shaped flow guide surface is arranged on the outer surface of the main body; the adjusting assembly is arranged at the top of the main body, and a drawing type adjusting belt is arranged in the adjusting assembly; the first waterproof assembly is arranged at the top of the adjusting assembly, an adjusting structure capable of enabling the first waterproof assembly to be attached to the skin of the patient is arranged in the first waterproof assembly, and a first waterproof layer is arranged outside the first waterproof assembly; the second waterproof assembly is arranged at the bottom of the main body, an adjusting structure capable of enabling the second waterproof assembly to be attached to the skin of a patient is arranged inside the main body, and a second waterproof layer is arranged outside the main body.

The utility model relates to the technical field of body position assistors, and discloses a body position assistor for PICC (Peripherally Inserted Central Catheter) catheterization, which comprises a high-density sponge block, and a groove is formed in the left side of the upper end in the high-density sponge block and is obliquely arranged at an angle of 45 degrees; the triangular block is arranged on the right side of the upper end of the high-density sponge block; the first extension block is arranged on the right side of the lower end of the high-density sponge block, and a second extension block is arranged on the right side of the exterior of the first extension block. The grooves matched with the arms in shape are formed in the high-density sponge block, and the arms are fixed in the grooves, so that the body position of a newborn is kept, and PICC and shooting work can be conveniently carried out.

The utility model relates to the technical field of medical auxiliary equipment, in particular to a pressurizing device for preventing venous thrombosis after PICC (Peripherally Inserted Central Catheter) catheterization, and aims to solve the technical problem that in the prior art, the effect of preventing thrombosis by depending on active movement of a patient after PICC catheterization is poor. The fixing band is used for being arranged on the arm of a patient in a sleeving mode, the massage bags are arranged on the surface of one side of the fixing band, at least two rows of massage bags are arranged in the width direction of the fixing band, at least one massage bag is arranged in each row, and the edge of each massage bag is fixedly connected with the surface of the fixing band to form an expandable inflation cavity. At least one inflation bag is arranged in each inflation cavity; by means of the fixing band, the massage bag and the inflatable bag, the arm of a patient can be automatically and periodically pressurized and relaxed, blood circulation is effectively promoted, and venous thrombosis is reduced. The automatic pressurization mode does not need active movement of the patient, is particularly suitable for patients with uncomfortable bodies or weakened strength after an operation, and improves the effect of preventing venous thrombosis.

The utility model relates to the technical field of medical instruments, and discloses a PICC (Peripherally Inserted Central Catheter) partition catheterization caliper which is characterized in that a frame body I is connected with a caliper body in an inserting manner, a sliding groove I is formed in the frame body I, two sliding blocks I are arranged on the sliding groove I in a sliding manner, and partitions are arranged on the sliding blocks I; a shifting block is fixedly connected with the first sliding block through a second sliding block, and a second sliding groove is formed in the first frame body and connected with the second sliding block in a sliding mode. The first frame body is arranged on the caliper body, the second frame body is arranged on the first frame body, a two-way screw is arranged on the second frame body in a penetrating mode, fourth sliding blocks are symmetrically arranged on the two-way screw, the fourth sliding blocks are connected with the second frame body in a sliding mode, clamping plates are arranged on the fourth sliding blocks, and the clamping plates clamp the caliper body; the knob is arranged at one end of the bidirectional screw, and the other end of the bidirectional screw is provided with a first nut and a first limiting block. According to the device, the caliper is divided into three areas by using the partition according to a Dausen area catheterization method, so that the accuracy and difficulty during PICC catheterization are improved.

The utility model discloses a PICC (Peripherally Inserted Central Catheter) operation vehicle with locking structures, and relates to the technical field of medical instruments, the PICC operation vehicle comprises a bottom frame, two locking mechanisms are symmetrically arranged at the rear position of the bottom of the bottom frame, each locking mechanism comprises a steering assembly arranged at the bottom of the bottom frame, the steering assembly comprises a wheel seat, and the wheel seat is arranged on the bottom of the bottom frame; a wheel shaft is rotationally arranged in the wheel seat, and one end of the wheel shaft movably penetrates through the inner wall of the wheel seat and extends to the outside. According to the PICC catheterization operation trolley with the locking structure, when the PICC catheterization operation trolley is parked, a pull rod only needs to be loosened, and a clamping plate is pushed to descend and be clamped with a gear under the action of restoring force of a spring, so that a roller in a steering assembly is automatically locked, the operation trolley is prevented from sliding, and the problem that the operation trolley accidentally moves due to the fact that medical workers are busy and negligence and forget to lock wheels is solved.