CN216455839U - Special tool cart for PICC catheter placement and maintenance - Google Patents

Abstract

The utility model discloses a PICC (peripherally inserted central catheter) catheter placement and maintenance special tool vehicle which comprises a vehicle frame, a drawer and an arm bracket, wherein the vehicle frame comprises an operating platform, a supporting plate, universal wheels and a supporting rod with adjustable length, the operating platform is fixed at the top of the supporting rod, the supporting plate is fixed at the bottom of the supporting rod, and the universal wheels are fixed at the bottom of the supporting plate; the drawer is fixed below the operating platform and is in sliding connection with the operating platform; the both sides of operation panel all are fixed with the arm bracket, and the arm bracket includes trailing arm, arm layer board, upset connecting piece and the arm fixed band of adjustable length, and the bottom and the backup pad fixed connection of trailing arm, arm layer board rotate through the upset connecting piece and connect at the top of trailing arm, and the upset connecting piece drives the arm layer board and from vertical state to 90 upsets of horizontality, and the arm fixed band is fixed on the arm layer board. The arm bracket and the tool car are integrated, so that the occupied space is small and the operation is convenient; height-adjustable, increase patient's travelling comfort, improve the simple operation nature.

Description

Special tool cart for PICC catheter placement and maintenance

technical field

The utility model relates to the technical field of medical devices, and more particularly, the utility model relates to a special tool cart for PICC tube placement and maintenance.

Background technique

Peripherally inserted central venous catheter, also known as PICC, uses a catheter to puncture from a peripheral vein (preferred arm vein), and the end of the catheter reaches the superior vena cava. At present, PICC catheterization is widely used in clinical practice, mainly for long-term intravenous infusion, infusion of irritant or toxic drugs (chemotherapy), and infusion of hypertonic or viscous fluids (such as TPN). At present, when PICC cannulation and maintenance are performed clinically, special requirements for placement of the cannulation arm are required. Generally, the abduction and extension are at 90° level with the body. During the operation, due to the special body position placement requirements and many items required, it is often necessary to carry an ordinary treatment car and an arm bracket device for operation, which requires a large enough space to place all items, and there are few clinical There are special arm bracket carts. Most of the existing equipment are mobile dining tables, treatment carts, etc. Sometimes the height cannot be adjusted to be flush with the bed surface, which results in poor patient comfort and inconvenient operation. In addition, agitated patients have poor cooperation, and arm movement may occur during the operation, resulting in contamination of sterile items or even failure of the operation. The existing PICC intubation and maintenance treatment cart has a single function, high space requirements, and cannot meet clinical needs. Therefore, a multi-functional PICC intubation and maintenance special tool cart is required.

Utility model content

In order to solve the problems of the existing PICC tube placement and maintenance without a dedicated tool car, the tool car is separated from the arm bracket, the height cannot be adjusted, the operation is inconvenient, and the arm is easy to move, the utility model innovatively provides a PICC tube placement and A dedicated tool trolley for maintenance, which integrates the arm bracket and the tool trolley. The arm bracket can be stored vertically when not in use, taking up little space and being easy to operate; the height of the operating table and the arm bracket can be adjusted to increase patient comfort, Improve the operational convenience of medical staff; the arm fixing belt can fix the patient's arm on the arm bracket to avoid arm movement; the drawer can accommodate the nursing supplies required for PICC catheter placement or dressing change, saving space.

In order to achieve the above technical purpose, the utility model discloses a special tool cart for PICC tube placement and maintenance, which includes a cart frame, a drawer and an arm bracket, and the cart frame includes an operation table, a support plate, a universal wheel and an adjustable a long support rod, the operating table is fixed on the top of the support rod, the support plate is fixed on the bottom of the support rod, and the universal wheel is fixed on the bottom of the support board;

The drawer is fixed below the operating table, and the drawer is slidably connected to the operating table;

Both sides of the operating table are fixed with the arm bracket, the arm bracket is fixed on the support plate, and the arm bracket includes an adjustable length support arm, an arm support plate, a flip connecting piece and Arm fixing belt, the bottom of the support arm is fixedly connected to the support plate, the arm support plate is rotatably connected to the top of the support arm through the flip connection piece, and the flip connection piece drives the arm support board It is turned 90° from the vertical state to the horizontal state, and the arm fixing belt is fixed on the arm support plate.

Further, the overturning connector includes a rotating shaft and a limiting member, the rotating shaft is perpendicular to the support arm, the arm support plate is rotatably connected to the support arm through the rotating shaft, and the limiting member Located below the arm support plate, the limiter is rotatably connected to the support arm, the limiter rotates with the support arm as the axis, and the limiter is used to limit the arm support plate to keep horizontal state.

Further, the support arm is an electric telescopic rod.

Further, the support arm includes a lower support arm and an upper support arm, the bottom of the lower support arm is fixedly connected to the support plate, the lower support arm and the upper support arm are nested and slidably connected, and are The first tightening bolt locks and slides, the side wall of the lower support arm is provided with a first threaded hole, the first tightening bolt is threadedly connected with the first threaded hole, and the first tightening bolt is screwed. The end portion entering the inside of the lower support arm is in contact with the upper support arm.

Further, the arm support plate includes a flat plate in the middle and curved plates on both sides of the flat plate, and the two curved plates are integrally formed with the flat plate.

Further, the support rod includes a lower support rod and an upper support rod, the bottom of the lower support rod is fixedly connected with the support plate, the lower support rod is in a nested sliding connection with the upper support rod, and is The second tightening bolt locks and slides, the side wall of the lower support rod is provided with a second threaded hole, the second tightening bolt is threadedly connected with the second threaded hole, and the second tightening bolt is screwed The end of the lower support rod is in contact with the upper support rod.

Further, the support rod is an electric telescopic rod.

Further, the top three sides of the operating table are surrounded by guardrails.

Further, the drawer is provided with an insertable partition.

Further, it also includes a rack, the rack is a metal ring that can change shape, the rack is slidably and rotatably connected to the support rod through a sleeve, and the sleeve is locked and slid by a third tightening bolt and rotation, the sleeve is provided with a third threaded hole perpendicular to the axial direction of the sleeve, the third tightening bolt is threadedly connected with the third threaded hole, and the third tightening bolt is screwed into the The end of the sleeve is in abutment with the support rod.

The beneficial effects of the present utility model are:

The special tool cart for PICC tube placement and maintenance of the utility model integrates the arm bracket and the tool cart, the arm support plate can be stored vertically when not in use, occupies a small space and is convenient to operate; the height of the operating table and the arm support plate can be adjusted , increase the comfort of patients and improve the convenience of medical staff; the arm fixing belt can fix the patient's arm on the arm bracket to avoid arm movement, which is convenient for restless patients and patients who cannot cooperate with tube placement/maintain arm position to fix the upper limbs ; The drawer can accommodate the nursing supplies required for PICC intubation or dressing change, saving space.

Description of drawings

Fig. 1 is the structural representation of the special tool vehicle for PICC tube placement and maintenance according to an embodiment of the present utility model;

Fig. 2 is the use state diagram of the arm bracket of the embodiment of the present invention;

FIG. 3 is a front view of the arm bracket of the embodiment of the present invention in a state of use.

In the figure,

1. Frame; 2. Drawer; 3. Arm bracket; 4. Shelf; 11. Operating table; 12. Support plate; 13. Universal wheel; 14. Support rod; 15. Guardrail; 31. Support arm; 32, arm support plate; 33, flip connector; 34, arm fixing belt; 41, sleeve; 42, third tightening bolt; 141, lower support rod; 142, upper support rod; 143, second tightening bolt 311, lower support arm; 312, upper support arm; 313, the first tightening bolt; 321, flat plate; 322, arc plate; 331, rotating shaft; 341, the first belt body; 342, the second belt body.

Detailed ways

The following is a detailed explanation and description of the special tool cart for PICC tube placement and maintenance provided by the present invention in conjunction with the accompanying drawings.

This embodiment specifically discloses a special tool cart for PICC tube placement and maintenance. As shown in FIG. 1 , it includes a vehicle frame 1 , a drawer 2 and an arm bracket 3 . The vehicle frame 1 includes an operation table 11 , a support plate 12 , a universal The wheel 13 and the adjustable length support rod 14, the operating table 11 is fixed on the top of the support rod 14, the support plate 12 is fixed on the bottom of the support rod 14, and the universal wheel 13 is fixed on the bottom of the support plate 12; in this embodiment The operation table 11 and the support plate 12 are both square, the area of the support plate 12 is larger than that of the operation table 11 , the operation table 11 is located above the support plate 12 , and there is a certain space between the operation table 11 and the support plate 12 . The number of support rods 14 is four, which are distributed at the four corners of the support plate 12 in a rectangular shape, and the number of universal wheels 13 is also four, which are distributed at the bottom of the support plate 12 in a rectangular shape, and the universal wheel 13 is provided with brake pads , when the frame 1 moves to the designated position, step on the brake pads to fix the frame 1 in this position. The length of the support rod 14 can be adjusted, so as to adjust the height of the operating table 11, and make appropriate adjustments according to the height of the medical staff, which is convenient for the medical staff to perform nursing operations and reduces fatigue.

In this embodiment, the support rod 14 includes a lower support rod 141 and an upper support rod 142, the bottom of the lower support rod 141 is fixedly connected to the support plate 12, the lower support rod 141 and the upper support rod 142 are in nested sliding connection, and the upper support rod The lower part of the rod 142 is sleeved into the lower support rod 141, and is locked and slid by the second tightening bolt 143; the lower support rod 141 is a fixed part, and the upper support rod 142 is a movable part. The side wall of the lower support rod 141 is provided with a second threaded hole, and one second threaded hole can be set at the top position of the lower support rod 141; the second threaded hole can also be set to multiple, multiple second threaded holes Arranged in order from the top of the lower support rod 141 downward, a plurality of second tightening bolts 143 can be used for locking, so that the support strength is higher and the structure is more stable; the second tightening bolts 143 are threadedly connected with the second threaded holes, When locking and sliding, the end of the second tightening bolt 143 screwed into the lower support rod 141 abuts against the upper support rod 142 . During the sliding process, the second tightening bolt is screwed out of the second threaded hole.

In some embodiments, the support rod 14 can also be an electric telescopic rod. The height of the operating table 11 is adjusted by extending or shortening the electric telescopic rod itself. This form of operation is more convenient, but requires a power supply.

The drawer 2 is fixed under the operating table 11, the drawer 2 is slidably connected with the operating table 11, and is slidably connected with the operating table 11 through the sliding rail; the drawer 2 is used for storage, and the items required in the process of tube placement can be placed. Bacterial drugs provide a sterile environment. The number of drawers 2 can be one or more, and multiple drawers 2 are arranged in layers from top to bottom, and partitions are arranged between adjacent drawers 2. Except for the drawers 2 on the first layer, other drawers 2 are slidably connected with the partitions .

Drawer 2 is provided with insertable partitions, which can be arbitrarily inserted according to the size of the items, with strong flexibility. Moreover, the partition can store different items separately to avoid cross-contamination. A hidden drawer handle is arranged above the outer wall of the drawer 2, which is beautiful and practical.

Arm brackets 3 are fixed on both sides of the operating table 11 , and the arm brackets 3 are symmetrically arranged on both sides of the operating table 11 . Bracket 3 places the arm. At this time, the arm bracket without the arm on the other side can also be temporarily used to store the objects needed in the operation, which expands the operation space. The arm bracket 3 is fixed on the support plate 12. The arm bracket 3 includes an adjustable length support arm 31, an arm support plate 32, a flip connection 33 and an arm fixing belt 34. The bottom of the support arm 31 is fixedly connected to the support plate 12. , the arm support plate 32 is rotatably connected to the top of the support arm 31 through the overturning connector 33, and the overturning connector 33 drives the arm support plate 32 to turn 90° from the vertical state to the horizontal state. When the arm is fixed, the arm support plate 32 is turned over to In the horizontal state, it is used to hold up the fixed arm; when not in use, the arm support plate 32 is turned to the vertical state, which reduces the horizontal width of the entire tool cart and reduces the occupied space. As shown in Figures 1 and 2, the arm support plate 32 includes a flat plate 321 in the middle and curved plates 322 on both sides of the flat plate 321, similar to a boat shape, the two curved plates 322 are integrally formed with the flat plate 321, and the horizontal plate 321 in the middle For placing the human arm, the curved plates 322 on both sides limit the human arm to reduce the risk of the arm slipping off the arm support plate 32 . When not in use, the center of the arc plate 322 faces the outside of the console 11 . The arm fixing belt 34 is fixed on the arm support plate 32, and the arm fixing belt 34 can further fix the arm on the arm support plate 32, which is convenient for restless patients and patients who cannot cooperate with tube placement/maintaining the arm position to fix the upper limbs.

As shown in FIGS. 1 and 2 , the flip connecting member 33 includes a rotating shaft 331 and a limiting member 332 , the rotating shaft 331 is perpendicular to the support arm 31 , and the arm support plate 32 is rotatably connected to the support arm 31 through the rotating shaft 331 , and the limiting member 332 Below the arm support plate 32 , the limiter 332 is rotatably connected with the support arm 31 , the limiter 332 rotates with the support arm 31 as the axis, and the limiter 332 is used to limit the arm support plate 32 to maintain a horizontal state.

In this embodiment, as shown in FIGS. 1-3 , each arm bracket 3 includes two support arms 31 , the two support arms 31 are arranged front and rear, and the rotation shaft 331 is fixed between the two support arms 31 . The two ends of the 331 are respectively connected with the two support arms 31 in rotation, and one side of the arm support plate 32 is fixedly connected with the rotating shaft 331 . The side length of the arm support plate 32 is smaller than the distance between the two support arms 31 . The limiting member 332 is in the shape of a plate, the limiting member 332 is rotatably connected with the support arm 31 through the bearing 333 , and the limiting member 332 can rotate around the support arm 31 . The bearing 333 is sleeved on the support arm 31, the inner ring of the bearing 333 is fixedly connected with the support arm 31, and the outer ring of the bearing 333 can be fixedly connected with the limiter through a connecting rod 334, and the setting of the connecting rod 334 is convenient for the limiter to stand vertically. The arm rest 32 in the straight state gives way. Limiting members 332 may be provided on both of the two support arms 31 , and the vertical heights of the two limiting members 332 are the same. When not in use, the arm support plate 32 is kept in a vertical state, and the two limit plates can be rotated to the bottom of the operation table 11 or to the outside of the operation table 11 to avoid the arm support plate 32 (as shown in FIG. 1 ) ; Preferably, the limiter is rotated to the bottom of the console 11 to reduce the occupied area. When using the arm support plate 32, firstly rotate the lower side of the arm support plate 32 with the rotating shaft 331 as the axis, and after the entire arm support plate 32 is in a horizontal state, rotate the stopper around the support arm 31, so that the limit The position member is located just below the arm support plate 32, and is supported under the flat plate 321 of the arm support plate 32 (as shown in Figures 2 and 3), preventing the arm support plate 32 from rotating downward, and the limit member 332 provides the arm support plate 32. support. In order to ensure sufficient support strength and stability, the area of the stopper may be appropriately increased.

In this embodiment, the support arm 31 includes a lower support arm 311 and an upper support arm 312, the bottom of the lower support arm 311 is fixedly connected to the support plate 12, the lower support arm 311 and the upper support arm 312 are in nested sliding connection, and the upper support arm 311 is in a nested sliding connection. The lower part of the arm 312 is sleeved into the lower support arm 311, and is locked and slid by the first tightening bolt 313; the lower support arm 311 is used as a fixed part, and the upper support arm 312 is used as a movable part. The side wall of the lower support arm 311 is provided with a first threaded hole, and one first threaded hole can be set at the top position of the lower support arm 311; the first threaded hole can also be set to a plurality of first threaded holes Arranged in order from the top of the lower support arm 311 downward, a plurality of first tightening bolts 313 can be used for locking, so that the supporting strength is higher and the structure is more stable; the first tightening bolts 313 are threadedly connected with the first threaded holes, When the sliding is locked, the end of the first tightening bolt 313 screwed into the inside of the lower support arm 311 abuts against the upper support arm 312 . When the height is adjusted, that is, when the upper support arm 312 slides along the lower support arm 311 , the first tightening bolt is screwed out of the first threaded hole.

In some embodiments, the support arm 31 can also be an electric telescopic rod. The height of the support arm 31 is adjusted by extending or shortening the electric telescopic rod itself. This form of operation is more convenient, but requires a power supply.

Both the arm support plate 32 and the flip connecting piece 33 are connected with the movable part of the support arm 31 and move up and down with the up and down movement of the movable part.

The arm fixing belt 34 includes a first belt body 341 and a second belt body 342 . One end of the first belt body 341 is fixedly connected to one side of the arm support plate 32 , and the other end of the second belt body 342 is connected to the arm support plate 32 . The other side is fixedly connected, the first belt body 341 and the second belt body 342 are arranged opposite to each other, and the other end of the first belt body 341 and the second belt body 342, that is, the free end, is connected by Velcro or buckle, which can be The thickness of the fixed arm is adjusted in length to avoid congestion and swelling due to too tight fixation, and to prevent the patient from breaking free due to too loose fixation, and the arm is restrained and fixed.

The surfaces of the first belt body 341 and the second belt body 342 in contact with the arm are lined with a polyester foam layer, which can effectively fix the position of the arm and avoid strangling the patient.

The top three sides of the operating table 11 are surrounded by guardrails 15 . Guardrails 15 are provided on the left, right and rear sides of the operating table 11 , that is, the side where the drawer is open is not provided with guardrails, which can prevent items on the operating table 11 from falling, and can also be used as a handrail when pushing the tool cart.

The tool cart in this embodiment also includes a rack 4, which is a metal ring that can change shape, such as a wire ring, and is slidably and rotatably connected to the support rod 14 through a sleeve 41, and the rack 4 can be fixed on the support The fixed part of the rod 14 can also be fixed on the movable part of the support rod 14 . The rack 4 can be used to place sharps boxes, infectious trash cans or household trash cans, and changes its shape according to the shape and size of the object to be placed. The rack 4 is rotatably connected to the support rod 14 through the sleeve 41, so that the rack 4 can be rotated, and can be rotated out of the operating table 11 when in use, and can be rotated under the operating table 11 when not in use, saving space. The rack 4 slides with the support rod 14 through the sleeve 41 , and can adjust the height of the support rod 14 , and is suitable for objects to be placed at different heights.

The racks 4 can be arranged in multiples, and the sharps boxes, infectious trash cans and household trash cans are respectively placed, so as to handle sharps and garbage classification in time.

The sleeve 41 is locked from sliding and rotating by the third tightening bolt 42. The sleeve 41 is provided with a third threaded hole perpendicular to the axial direction of the sleeve 41. The third tightening bolt 42 is threadedly connected with the third threaded hole. The ends of the three-tightening bolts screwed into the sleeve 41 are in contact with the support rod 14 , and the rack 4 is fixed after the abutment.

The operating table 11, the drawer 2 and the arm bracket 3 are all made of PVC material, which is convenient for cleaning and disinfection.

In this embodiment, the length of the tool car is 600 mm, the width is 500 mm, and the adjustment range of the height is 800-1500 mm (including the height of the universal wheel 13 ), and the height of the car body conforms to human mechanics.

The utility model integrates the operating table 11 and the arm bracket 3 into one, which saves space and is convenient and practical; the arm bracket 3 is of a liftable type and can also be turned 90°, which meets the requirements for the placement of items and the direction of arm abduction during clinical catheter placement. , the height can be adjusted according to the comfort of the operator and the patient; there is a rotating storage rack 4, which can store sharps buckets, medical trash cans and household trash cans, so as to facilitate the timely sorting and disposal of garbage and sharps to avoid needle sticks Injury occurrence and occupational exposure; large-capacity storage drawer 2, equipped with insertable partitions, can be used to classify and store items required for catheter placement/maintenance.

The tool cart of the utility model has the advantages of simple structure and convenient use. When in use, the heights of the arm support plates on both sides and the operation table 11 can be adjusted according to the different heights of the operator and the patient, and the arm support plates on both sides can be turned down after use. The rotary storage rack 4 can also be recycled under the drawer 2 to make reasonable use of the space.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying the indicated device. Or the elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of this specification, reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" or the like is meant to be combined with the description of the embodiment A particular feature, structure, material, or characteristic described or exemplified is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in a suitable manner in any at least one embodiment or example. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and simple improvements made on the substance of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A special tool vehicle for PICC tube placement and maintenance, characterized in that it comprises a vehicle frame (1), a drawer (2) and an arm bracket (3), and the vehicle frame (1) comprises an operating table (11), A support plate (12), a universal wheel (13) and a support rod (14) with adjustable length, the operating table (11) is fixed on the top of the support rod (14), and the support plate (12) is fixed At the bottom of the support rod (14), the universal wheel (13) is fixed on the bottom of the support plate (12); The drawer (2) is fixed below the operating table (11), and the drawer (2) is slidably connected to the operating table (11); The arm brackets (3) are fixed on both sides of the operating table (11), the arm brackets (3) are fixed on the support plate (12), and the arm brackets (3) include A length-adjustable support arm (31), an arm support plate (32), a flip connecting piece (33) and an arm fixing strap (34), the bottom of the support arm (31) is fixedly connected to the support plate (12) , the arm support plate (32) is rotatably connected to the top of the support arm (31) through the flip connecting piece (33), and the flip connecting piece (33) drives the arm support board (32) from the vertical The straight state is turned 90° to the horizontal state, and the arm fixing belt (34) is fixed on the arm support plate (32). 2 . The special tool cart for PICC tube placement and maintenance according to claim 1 , wherein the inverting connecting member ( 33 ) comprises a rotating shaft ( 331 ) and a limiting member ( 332 ), and the rotating shaft ( 331 ) ) is perpendicular to the support arm (31), the arm support plate (32) is rotatably connected to the support arm (31) through the rotating shaft (331), and the limiting member (332) is located on the arm Below the supporting plate (32), the limiting member (332) is rotatably connected with the supporting arm (31), the limiting member (332) rotates with the supporting arm (31) as the axis, and the limiting member (332) rotates with the supporting arm (31) as the axis. The position piece (332) is used to limit the arm support plate (32) to remain in a horizontal state. 3 . The special tool vehicle for PICC tube placement and maintenance according to claim 1 or 2 , wherein the support arm ( 31 ) is an electric telescopic rod. 4 . The special tool cart for PICC tube placement and maintenance according to claim 1 or 2, characterized in that the support arm (31) comprises a lower support arm (311) and an upper support arm (312), and the lower support arm (312) The bottom of the arm (311) is fixedly connected with the support plate (12), the lower support arm (311) and the upper support arm (312) are in nested sliding connection, and are connected by a first tightening bolt (313) For locking and sliding, the side wall of the lower support arm (311) is provided with a first threaded hole, the first tightening bolt (313) is threadedly connected with the first threaded hole, and the first tightening bolt (313) The end screwed into the lower support arm (311) is in contact with the upper support arm (312). 5. The special tool cart for PICC cannulation and maintenance according to claim 1 or 2, wherein the arm support plate (32) comprises a flat plate (321) in the middle and curved plates on both sides of the flat plate (321). (322), the two arc-shaped plates (322) are integrally formed with the flat plate (321). 6. The special tool cart for PICC tube placement and maintenance according to claim 1, characterized in that the support rod (14) comprises a lower support rod (141) and an upper support rod (142), the lower support rod (142). The bottom of 141) is fixedly connected with the support plate (12), the lower support rod (141) is in nested sliding connection with the upper support rod (142), and is locked by a second tightening bolt (143). sliding, the side wall of the lower support rod (141) is provided with a second threaded hole, the second tightening bolt (143) is threadedly connected with the second threaded hole, and the second tightening bolt (143) ) screwed into the inner end of the lower support rod (141) abuts against the upper support rod (142). 7 . The special tool vehicle for PICC tube placement and maintenance according to claim 1 , wherein the support rod ( 14 ) is an electric telescopic rod. 8 . 8 . The special tool vehicle for PICC tube placement and maintenance according to claim 1 , wherein guardrails ( 15 ) are surrounded on three sides of the top of the operating table ( 11 ). 9 . 9 . The special tool cart for PICC tube placement and maintenance according to claim 1 , wherein a splicable partition is provided in the drawer ( 2 ). 10 . 10. The special tool vehicle for PICC tube placement and maintenance according to claim 1, characterized in that further comprising a storage rack (4), the storage rack (4) is a metal ring that can change shape, and the storage rack (4) 4) The sleeve (41) is slidably and rotatably connected to the support rod (14) through a sleeve (41), the sleeve (41) is locked by a third tightening bolt (42) to slide and rotate, and the sleeve (41) There is a third threaded hole perpendicular to the axial direction of the sleeve (41), the third tightening bolt (42) is threadedly connected with the third threaded hole, and the third tightening bolt is screwed into the sleeve The end of the cylinder (41) is in contact with the support rod (14).

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