阅读说明：本技术 桡动脉穿刺固定器 (Radial artery puncture fixer ) 是由 张杨 田竟 蒯洁 张红梅 于 2019-10-10 设计创作，主要内容包括：本发明属于医疗器械技术领域,具体涉及桡动脉穿刺固定器,包括手臂支撑板,手臂支撑板上可拆卸连接有圆弧支撑架；圆弧支撑架包括圆弧板和圆弧板上固接的一对导向筒；导向筒上均滑动连接有固定滑柱,圆弧板上转动连接有使固定滑柱在导向筒内滑动的动力固定蜗杆；固定滑柱上设有按压板,固定滑柱在导向筒上滑动时可带动按压板在固定滑柱上转动；圆弧板上转动连接有控制按压板在固定滑柱上转动的主动控制蜗杆；圆弧板上转动连接有控制固定滑柱在导向筒内滑动的距离的第一传动蜗杆；本发明的圆弧支撑架可以从手臂支撑板上拆卸,患者穿刺后将方便移走；固定滑柱带着按压板对胳膊进行固定时,按压板可以自动调节角度,方便对不同患者的胳膊进行固定。(The invention belongs to the technical field of medical instruments, and particularly relates to a radial artery puncture fixator which comprises an arm supporting plate, wherein an arc supporting frame is detachably connected to the arm supporting plate; the arc support frame comprises an arc plate and a pair of guide cylinders fixedly connected to the arc plate; the guide cylinders are all connected with fixed sliding columns in a sliding mode, and the circular arc plates are rotatably connected with power fixing worms enabling the fixed sliding columns to slide in the guide cylinders; the fixed sliding column is provided with a pressing plate, and the pressing plate can be driven to rotate on the fixed sliding column when the fixed sliding column slides on the guide cylinder; the arc plate is rotationally connected with an active control worm which controls the pressing plate to rotate on the fixed sliding column; the arc plate is rotatably connected with a first transmission worm for controlling the sliding distance of the fixed sliding column in the guide cylinder; the arc support frame can be detached from the arm support plate, and a patient can conveniently move after puncture; when the fixed sliding column drives the pressing plate to fix the arms, the angle of the pressing plate can be automatically adjusted, and the arms of different patients can be conveniently fixed.)

1. The radial artery puncture fixator comprises an arm supporting plate (1), wherein an arc supporting frame (2) is detachably connected to the arm supporting plate (1); the lower end of the arm supporting plate (1) is provided with a rotary fixing device; the method is characterized in that: the arc support frame (2) comprises an arc plate and guide cylinders (12) symmetrically and fixedly connected to the arc plate; each guide cylinder (12) is connected with a fixed sliding column (13) in a sliding mode, the arc plate is connected with a power fixing worm (301) in a rotating mode, and the power fixing worm (301) is connected with a main power transmission structure enabling the fixed sliding columns (13) to slide in the guide cylinders (12); the fixed sliding column (13) is provided with a pressing plate (308) for pressing and fixing the arm of a patient, the fixed sliding column (13) is internally provided with an adjusting structure matched with the pressing plate (308), and the main power transmission structure drives the fixed sliding column (13) to slide on the guide cylinder (12) and simultaneously provides power for the adjusting structure so that the adjusting structure drives the pressing plate (308) to rotate on the fixed sliding column (13); the arc plate is rotatably connected with an active control worm (380), and the active control worm (380) is connected with a control and adjustment structure which can control the pressing plate (308) to rotate and not rotate on the fixed sliding column (13); the arc plate is connected with a first transmission worm (320) in a rotating mode, the first transmission worm (320) is connected with a limiting structure capable of controlling the sliding distance of the fixed sliding column (13) in the guide cylinder (12), and the main power transmission structure drives the fixed sliding column (13) to slide on the guide cylinder (12) and provides power for the limiting structure.

2. The radial artery puncture fixator of claim 1, wherein: the main power transmission structure comprises a pair of power fixed worm wheels (302) meshed with the power fixed worm (301), the power fixed worm wheels (302) are rotatably connected with the arc plate, and the power fixed worm wheels (302) are symmetrically arranged; the utility model discloses a fixed gear, including power fixed worm wheel (302), circular arc board, coaxial rigid coupling have first initiative fixed pulley on the power fixed worm wheel (302), rotate on the circular arc board and be connected with first driven fixed pulley (303) with first initiative fixed pulley matched with, coaxial rigid coupling has first fixed worm on first driven fixed pulley (303), it is connected with the fixed worm of second to rotate on the circular arc board, coaxial rigid coupling has first fixed worm wheel (304) with first fixed worm engaged with on the fixed worm of second, it is connected with the fixed worm wheel (305) of second with the fixed worm engaged with to rotate on guide cylinder (12), it is connected with fixed gear (306) with the fixed worm wheel (305) of second coaxial rigid coupling to rotate on guide cylinder (12), be provided with on fixed traveller (13) with fixed rack (307) of fixed gear (306) engaged with.

3. The radial artery puncture fixator of claim 1, wherein: the adjusting structure comprises an adjusting rack (360) arranged on the guide cylinder (12), a driving adjusting gear meshed with the adjusting rack (360) is rotatably connected to the fixed sliding column (13), and a driven adjusting gear (361) meshed with the driving adjusting gear is rotatably connected to the fixed sliding column (13); a driving adjusting belt wheel (362) is coaxially and fixedly connected to the driven adjusting gear (361), and a driven adjusting belt wheel (363) matched with the driving adjusting belt wheel (362) is rotatably connected to the fixed sliding column (13); a driving adjusting bevel gear is coaxially and fixedly connected to the driven adjusting belt wheel (363), a driven adjusting bevel gear (364) meshed with the driving adjusting bevel gear is rotatably connected to the fixed sliding column (13), a first adjusting gear (365) is coaxially and fixedly connected to the driven adjusting bevel gear (364), and a second adjusting gear (366) meshed with the first adjusting gear (365) is rotatably connected to the fixed sliding column (13); the lower end of the second adjusting gear (366) is coaxially and fixedly connected with a first adjusting bevel gear, and an angle adjusting mechanism matched with the pressing plate (308) is connected onto the first adjusting bevel gear.

4. The radial artery puncture fixator of claim 3, wherein: the angle adjusting mechanism comprises an adjusting rotating shaft (4) which is rotatably connected with the lower end of the fixed sliding column (13), and the pressing plate (308) is fixedly connected with the adjusting rotating shaft (4); a first connecting cylinder is arranged in the adjusting rotating shaft (4), one end of the first connecting cylinder is fixedly connected with a second adjusting bevel gear (367) meshed with the first adjusting bevel gear, the first adjusting bevel gear and the second adjusting bevel gear (367) can be separated from each other, a limiting slide rod is arranged on the second adjusting bevel gear (367), and a limiting slide hole matched with the limiting slide rod is arranged on the adjusting rotating shaft (4); a first spring matched with a second adjusting bevel gear (367) is sleeved on the adjusting rotating shaft (4), and one end of the first spring is fixedly connected with the fixed sliding column (13); one end of the first connecting cylinder, which is far away from the second adjusting bevel gear (367), is fixedly connected with a limiting circular plate; the first connecting cylinder is connected with the control adjusting structure; the first connecting cylinder is connected with a locking structure.

5. The radial artery puncture fixator of claim 4, wherein: the control adjusting structure comprises an active control worm wheel (381) meshed with an active control worm (380), a first control rotating column (382) is connected to the fixed sliding column (13) in a rotating mode, the active control worm wheel (381) is fixedly connected with the first control rotating column (382), and a first thread and a first gear are arranged on the first control rotating column (382); a second control rotating column (383) matched with the first control rotating column (382) is connected onto the fixed sliding column (13) in a sliding mode, and a second thread matched with the first thread and a second gear matched with the first gear are arranged on the second control rotating column (383); the second control rotating column (383) is provided with a limiting round hole matched with the limiting round plate; the first thread is left-handed, and the second thread is right-handed.

6. The radial artery puncture fixator of claim 4, wherein: the locking structure comprises a second connecting cylinder (368) coaxially and fixedly connected with a second adjusting bevel gear (367), a connecting rod (369) is rotatably connected to the second connecting cylinder (368), a connecting plate (370) is fixedly connected to one end, far away from the second connecting cylinder (368), of the connecting rod (369), and the connecting plate (370) is in sliding connection with the fixed sliding column (13); a guide locking sliding barrel (371) is fixedly connected to the connecting plate (370), a guide locking sliding pin (372) is slidably connected to the guide locking sliding barrel (371), a second spring is fixedly connected to the guide locking sliding barrel (371), and the second spring is fixedly connected to the guide locking sliding pin (372); the adjusting rotating shaft (4) is fixedly connected with a limiting disc (373), and locking round holes matched with the guide locking sliding pins (372) are uniformly distributed on the limiting disc (373).

7. The radial artery puncture fixator of claim 1, wherein: the limiting structure comprises a pair of symmetrical first transmission worm gears (321) which are rotatably connected to an arc plate, the first transmission worm gears (321) are meshed with a first transmission worm (320), and a first driving belt wheel is coaxially and fixedly connected to the first transmission worm gears (321); a limiting support plate (5) is fixedly connected to the arc plate, a first driven belt wheel (322) matched with the first driving belt wheel is rotatably connected to the limiting support plate (5), a connecting handle (323) is fixedly connected to the first driven belt wheel (322), a limiting guide cylinder (12) is fixedly connected to the connecting handle (323), a limiting bolt is slidably connected to the limiting guide cylinder (12), a third spring is sleeved on the limiting bolt, and a limiting plate matched with the third spring is fixedly connected to the limiting bolt; the limiting support plate (5) is provided with a guiding arc slideway matched with the limiting bolt; a second limiting gear (345) is rotatably connected to the limiting support plate (5), and a limiting jack matched with a limiting bolt is arranged on the second limiting gear (345); and the second limit gear (345) is connected with a limit transmission structure matched with the fixed sliding column (13).

8. The radial artery puncture fixator of claim 7, wherein: the limiting transmission structure comprises a limiting power rack (340) arranged on the fixed sliding column (13), and a limiting power gear (341) matched with the limiting power rack (340) is rotatably connected to the guide cylinder (12); a limiting driving bevel gear is coaxially and fixedly connected to the limiting power gear (341), a limiting worm is rotatably connected to the arc plate, and a limiting driven bevel gear (342) meshed with the limiting driving bevel gear is fixedly connected to the upper end of the limiting worm; a limiting worm wheel (343) meshed with the limiting worm is rotatably connected to the arc plate, and a limiting driving belt wheel is coaxially and fixedly connected to the limiting worm wheel (343); the arc plate is rotatably connected with a first limiting gear engaged with a second limiting gear (345), and the first limiting gear is coaxially and fixedly connected with a limiting driven belt wheel (344) matched with a limiting driving belt wheel.

9. The radial artery puncture fixator of claim 1, wherein: a palm pressing and fixing device is arranged on the arm supporting plate (1), the palm pressing and fixing device comprises a pressing worm wheel which is rotatably connected to the arm supporting plate (1), and a pressing worm (14) which is meshed with the pressing worm wheel is rotatably connected to the arm supporting plate (1); the pressing worm wheel is fixedly connected with a rotating handle (15), the rotating handle (15) is rotatably connected with a pressing screw rod (16), the pressing screw rod (16) is connected with a pressing handle (11) in a threaded mode, and the pressing handle (11) is connected with the rotating handle (15) in a sliding mode.

10. The radial artery puncture fixator of claim 1, wherein: symmetrical positioning columns (10) are uniformly distributed on the arm supporting plate (1), positioning holes matched with the positioning columns (10) are formed in the arc supporting frame (2), positioning holes are formed in the positioning columns (10) and the arc supporting frame (2), and positioning pins are inserted into the positioning holes; the arc support frame (2) can be detached and fixed from the arm support plate (1) through the positioning pin.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a radial artery puncture fixator.

Background

The radial artery is the most commonly used artery puncture part, is positioned on the inner side of the capitulum radius in the front area of the wrist, is very superficial and easy to touch although the lumen of the radial artery is tiny and has relatively weak pulse, is convenient and safe to operate and easy to expose, is not limited by positions and operation places, is not easy to cause mistaken entering of veins and deep nerves, and is the most commonly used part for blood collection; the radial artery puncture is suitable for complex and major operations, and patients with blood pressure change and unstable hemodynamics need to be continuously monitored, patients with blood dilution and controlled blood pressure reduction in the operation, and the like; when a patient is punctured, the palm of the patient is upward, the wrist part is higher than the palm of the patient, and the arm of the patient needs to be fixed due to the fact that a vessel of a radial artery is thin and is painful when puncturing is performed, so that the situation that when a doctor punctures the patient, the doctor cannot puncture the patient due to the fact that the patient shakes the arm and can puncture other parts of the patient can be prevented; at present, the existing puncture arm fixer can only be used for part of patients, the fixer is troublesome to disassemble after puncturing the patients, and medical workers can only simply fix the arms of the patients when puncturing the patients, so that the wrist of the patients cannot be effectively prevented from moving, puncture failure is easily caused, pain of the patients is increased, and the working strength of the medical workers is also increased.

Disclosure of Invention

Aiming at the situation, the invention provides a radial artery puncture fixator to overcome the defects of the prior art, and the radial artery puncture fixator effectively solves the problems that the fixator can only be used for partial patients, the fixator is troublesome to disassemble after the puncture is carried out on the patients, and medical staff can only simply fix the arms of the patients when the medical staff puncture the patients, so that the wrist of the patients cannot be effectively prevented from moving, the puncture failure is easily caused, and the pain of the patients is increased.

In order to achieve the purpose, the invention adopts the following technical scheme: the radial artery puncture fixator comprises an arm supporting plate, wherein an arc supporting frame is detachably connected to the arm supporting plate; the lower end of the arm supporting plate is provided with a rotary fixing device; the method is characterized in that: the arc support frame comprises an arc plate and guide cylinders symmetrically and fixedly connected to the arc plate; each guide cylinder is connected with a fixed sliding column in a sliding mode, the arc plate is connected with a power fixing worm in a rotating mode, and the power fixing worm is connected with a main power transmission structure enabling the fixed sliding column to slide in the guide cylinder; the fixed sliding column is provided with a pressing plate for pressing and fixing the arm of the patient, an adjusting structure matched with the pressing plate is arranged in the fixed sliding column, and the main power transmission structure drives the fixed sliding column to slide on the guide cylinder and provides power for the adjusting structure at the same time so that the adjusting structure drives the pressing plate to rotate on the fixed sliding column; the arc plate is rotatably connected with an active control worm, and the active control worm is connected with a control and adjustment structure which can control the pressing plate to rotate and not rotate on the fixed sliding column; the arc plate is connected with a first transmission worm in a rotating mode, the first transmission worm is connected with a limiting structure capable of controlling the sliding distance of the fixed sliding column in the guide cylinder, and the main power transmission structure drives the fixed sliding column to slide on the guide cylinder and provides power for the limiting structure.

Compared with the prior art, the invention has the beneficial effects that:

1. the arc support frame can be detached from the arm support plate, so that the arc support frame is convenient for a patient to move after puncture, the arm of the patient is not required to be lifted, and the pain of a wound caused by the inconvenient movement after puncture and the arm lifting is avoided.

2. When the fixed sliding column is used for fixing the arms of a patient, the angle of the fixed sliding column can be automatically adjusted through the adjusting structure of the pressing plate, so that the arms of different patients can be conveniently fixed, the fixation is firmer, and the convenience of the fixing slide column is improved.

3. The invention can control the rotation of the pressing plate, and meanwhile, when the first adjusting bevel gear and the second adjusting bevel gear are separated from each other, the locking structure can prevent the pressing plate from freely rotating, thereby improving the functional diversity and the safety of the invention.

4. When the arm pressing device is used, the angle between the limiting bolt and the limiting jack is adjusted, the sliding distance of the fixed sliding column on the guide cylinder can be controlled, the arm of a patient with unclear consciousness is prevented from being pressed excessively by the pressing plate, and the safety of the arm pressing device is improved.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a schematic view of a first main power structure for arm fixation according to the present invention;

FIG. 3 is a schematic view of a second main power structure for arm fixation according to the present invention;

FIG. 4 is a schematic view of the adjustment transmission structure of the pressing plate according to the present invention;

FIG. 5 is a schematic view of the detachable structure of the rotation control and locking of the pressing plate according to the present invention;

FIG. 6 is a partial cross-sectional view of the rotation control and locking of the press plate of the present invention;

FIG. 7 is a schematic view of a limit transmission structure of the present invention;

FIG. 8 is a partially enlarged view of the limiting transmission structure of the present invention;

FIG. 9 is a schematic view of the palm rest of the present invention;

in the figures, 1, an arm support plate, 2, a circular arc support frame, 3, an arm fixing member, 301, a power fixing worm, 302, a power fixing worm wheel, 303, a first driven fixing pulley, 304, a first fixing worm wheel, 305, a second fixing worm wheel, 306, a fixed gear, 307, a fixed rack, 308, a pressing plate, 320, a first transmission worm, 321, a first transmission worm wheel, 322, a first driven pulley, 323, a connecting handle, 340, a limit power rack, 341, a limit power gear, 342, a limit driven bevel gear, 343, a limit worm wheel, 344, a limit driven pulley, 345, a second limit gear, 360, an adjusting rack, 361, a driven adjusting gear, 362, a driving adjusting pulley, 363, a driven adjusting pulley, 364, a driven adjusting bevel gear, 365, a first adjusting gear, 366, a second adjusting gear, 367, a second adjusting bevel gear, 368, a second connecting cylinder, 369. connecting rod, 370, the connecting plate, 371, the dead sliding barrel of direction lock, 372, the dead sliding pin of direction lock, 373, spacing dish, 380, the active control worm, 381, the active control worm wheel, 382, first control column spinner, 383, the second control column spinner, 4, adjust the rotation axis, 5, spacing backup pad, 6, fixed seat of adjusting, 7, fixed bolt, 8, go up the support post, 9, the under bracing post, 10, the reference column, 11, press the handle, 12, the guide cylinder, 13, fixed sliding post, 14, press the worm, 15, the rotation handle, 16, press the lead screw.

Detailed Description

The radial artery puncture fixator is shown in figures 1-9 and comprises an arm supporting plate 1, wherein an arc supporting frame 2 is detachably connected to the arm supporting plate 1; the lower end of the arm supporting plate 1 is provided with a rotary fixing device; the method is characterized in that: the arc support frame 2 comprises an arc plate and guide cylinders 12 symmetrically and fixedly connected to the arc plate; each guide cylinder 12 is connected with a fixed sliding column 13 in a sliding manner, the circular arc plate is connected with a power fixing worm 301 in a rotating manner, and the power fixing worm 301 is connected with a main power transmission structure which enables the fixed sliding column 13 to slide in the guide cylinder 12; the fixed sliding column 13 is provided with a pressing plate 308 for pressing and fixing the arm of the patient, the fixed sliding column 13 is internally provided with an adjusting structure matched with the pressing plate 308, and the main power transmission structure drives the fixed sliding column 13 to slide on the guide cylinder 12 and simultaneously provides power for the adjusting structure so that the adjusting structure drives the pressing plate 308 to rotate on the fixed sliding column 13; the arc plate is rotatably connected with an active control worm 380, and the active control worm 380 is connected with a control and adjustment structure which can control the pressing plate 308 to rotate and not rotate on the fixed sliding column 13; the arc plate is connected with a first transmission worm 320 in a rotating mode, the first transmission worm 320 is connected with a limiting structure capable of controlling the sliding distance of the fixed sliding column 13 in the guide cylinder 12, and the main power transmission structure drives the fixed sliding column 13 to slide on the guide cylinder 12 and provides power for the limiting structure.

As shown in fig. 1, when the medical staff uses the invention, firstly, the invention is fixed on the bed by using the rotary fixing device, then the position of the arm supporting plate 1 is adjusted according to the position of the arm of the patient, after the position of the arm supporting plate 1 is adjusted, the arm of the patient is placed on the arm supporting plate 1, then the arc supporting frame 2 is fixed on the arm supporting plate 1, and then, the first transmission worm 320 is firstly rotated to adjust the sliding distance of the fixed sliding column 13 in the guide cylinder 12; then, the power fixing worm 301 is rotated to enable the fixing sliding column 13 to slide along the guide cylinder 12 through the main power transmission structure, and the fixing sliding column 13 drives the pressing plate 308 to fix the arm of the patient; when the pressing plate 308 is not required to be adjusted, the medical staff can rotate the active control worm 380, and the active control worm 380 can control the rotation of the pressing plate 308 through the control adjusting structure; when the device is used, the fixed sliding column 13 drives the pressing plate 308 to slide along the guide cylinder 12, the angle of the pressing plate 308 can be automatically adjusted through the adjusting structure, the angle can be adjusted according to the arm thickness of different patients, the arms of the patients can be well pressed, the stability of the device is improved, and the device can be suitable for more people; the sliding distance of the fixed sliding column 13 can be controlled through the limiting structure, so that the fixed sliding column is more convenient to use for patients with unconsciousness, the pressing plate 308 can be prevented from pressing the arms of the patients too tightly, and the safety of the fixed sliding column is improved; the arc support frame 2 can be detached from the arm support plate 1, so that the arm support frame is convenient for a patient to move after puncture, the arm of the patient is not required to be lifted, and the pain of a wound caused by inconvenient movement after puncture and the lifting of the arm is avoided.

The main power transmission structure comprises a pair of power fixed worm wheels (302) meshed with the power fixed worm (301), the power fixed worm wheels (302) are rotatably connected with the arc plate, and the power fixed worm wheels (302) are symmetrically arranged; equal coaxial rigid coupling has first initiative fixed drive on the fixed worm wheel 302 of power, it is connected with the first driven fixed band wheel 303 with first initiative fixed band wheel matched with to rotate on the arc board, equal coaxial rigid coupling has first fixed worm on the first driven fixed band wheel 303, it is connected with the fixed worm of second to rotate on the arc board, coaxial rigid coupling has the first fixed worm wheel 304 with first fixed worm engaged with on the fixed worm of second, it is connected with the fixed worm wheel 305 of second fixed worm engaged with to rotate on the guide cylinder 12, it is connected with the fixed gear 306 with the fixed gear of the fixed worm wheel 305 coaxial rigid coupling to rotate on the guide cylinder 12, be provided with the fixed rack 307 with fixed gear 306 engaged with on the fixed traveller 13.

As shown in fig. 2 and 4, when a patient's arm is placed on the lower end of the arc support frame 2, the medical staff rotates the power fixing worm 301, the power fixing worm 301 simultaneously drives the two power fixing worm gears 302 to rotate, the two power fixing worm gears 302 respectively drive the first driving fixing belt wheel to rotate, the two first driving fixing belt wheels simultaneously drive the two first driven fixing belt wheels 303 to rotate, the two first driven fixing belt wheels 303 respectively drive the first fixing worm to rotate, the two first fixing worm gears respectively drive the first fixing worm wheel 304 to rotate, the two first fixing worm wheels 304 respectively drive the second fixing worm to rotate, the second fixing worm gears respectively drive the second fixing worm wheel 305 to rotate, the two second fixing worm wheels 305 respectively drive the fixing gear 306 to rotate, the two fixing gear 306 respectively drive the fixing slide column 13 through the fixing rack 307 to slide on the guide cylinder 12 with the pressing plate 308 to fix the patient's arm, the arm fixing device can conveniently fix the arms of a patient, and improves the convenience of the arm fixing device.

The adjusting structure comprises an adjusting rack 360 arranged on the guide cylinder 12, a driving adjusting gear meshed with the adjusting rack 360 is rotatably connected to the fixed sliding column 13, and a driven adjusting gear 361 meshed with the driving adjusting gear is rotatably connected to the fixed sliding column 13; a driving adjusting belt wheel 362 is coaxially and fixedly connected to the driven adjusting gear 361, and a driven adjusting belt wheel 363 matched with the driving adjusting belt wheel 362 is rotatably connected to the fixed sliding column 13; a driving adjusting bevel gear is coaxially and fixedly connected to the driven adjusting belt wheel 363, a driven adjusting bevel gear 364 engaged with the driving adjusting bevel gear is rotatably connected to the fixed sliding column 13, a first adjusting gear 365 is coaxially and fixedly connected to the driven adjusting bevel gear 364, and a second adjusting gear 366 engaged with the first adjusting gear 365 is rotatably connected to the fixed sliding column 13; a first adjusting bevel gear is coaxially and fixedly connected to the lower end of the second adjusting gear 366, and an angle adjusting mechanism matched with the pressing plate 308 is connected to the first adjusting bevel gear.

As shown in fig. 2 and 4, when the fixed sliding column 13 slides on the guide cylinder 12, the driving adjustment gear on the fixed sliding column 13 rotates through the adjustment rack 360, the driving adjustment gear drives the driven adjustment gear 361 to rotate, the driven adjustment gear 361 drives the driving adjustment pulley 362 to rotate, the driving adjustment pulley 362 drives the driven adjustment pulley 363, the driven adjustment pulley 363 drives the driving adjustment bevel gear to rotate, the driving adjustment bevel gear drives the driven adjustment bevel gear 364 to rotate, the driven adjustment bevel gear 364 drives the first adjustment gear 365 to rotate, the first adjustment gear 365 drives the second adjustment gear 366 to rotate, the second adjustment gear 366 drives the first adjustment bevel gear to rotate, and the first adjustment bevel gear drives the angle adjustment mechanism to adjust the pressing plate 308; when the fixed sliding column 13 carries the pressing plate 308 to fix the arm of the patient, for the patient with a thin arm, the sliding distance of the fixed sliding column 13 on the guide cylinder 12 is long, the rotating angle of the pressing plate 308 is large, the arm of different patients can be conveniently pressed, meanwhile, the pressing is firmer, and the convenience of the invention is improved.

The angle adjusting mechanism comprises an adjusting rotating shaft 4 which is rotatably connected with the lower end of the fixed sliding column 13, and the pressing plate 308 is fixedly connected with the adjusting rotating shaft 4; a first connecting cylinder is arranged in the adjusting rotating shaft 4, one end of the first connecting cylinder is fixedly connected with a second adjusting bevel gear 367 meshed with the first adjusting bevel gear, the first adjusting bevel gear and the second adjusting bevel gear 367 can be separated from each other, a limiting sliding rod is arranged on the second adjusting bevel gear 367, and a limiting sliding hole matched with the limiting rod is arranged on the adjusting rotating shaft 4; a first spring matched with a second adjusting bevel gear 367 is sleeved on the adjusting rotating shaft 4, and one end of the first spring is fixedly connected with the fixed sliding column 13; one end of the first connecting cylinder, which is far away from the second adjusting bevel gear 367, is fixedly connected with a limiting circular plate; the first connecting cylinder is connected with the control adjusting structure; the first connecting cylinder is connected with a locking structure.

As shown in fig. 4, 5 and 6, when the fixed sliding column 13 slides on the guide cylinder 12, when the first adjustment bevel gear 367 and the second adjustment bevel gear 367 are engaged with each other, the first adjustment bevel gear drives the second adjustment bevel gear 367 to rotate, the second adjustment bevel gear 367 drives the adjustment rotating shaft 4 to rotate through the limit sliding rod, and the adjustment rotating shaft 4 drives the pressing plate 308 to rotate; when the pressing plate 308 does not need to be adjusted, the medical staff can use the control and adjustment structure to separate the first adjustment bevel gear 367 from the second adjustment bevel gear 367 without adjusting the angle of the pressing plate 308; the angle of the pressing plate 308 can be automatically adjusted on the reverse side, so that the use is more convenient, and the convenience of the invention is improved.

The control adjusting structure comprises an active control worm gear 381 meshed with an active control worm 380, a first control rotating column 382 is rotatably connected to the fixed sliding column 13, the active control worm gear 381 is fixedly connected with the first control rotating column 382, and a first thread and a first gear are arranged on the first control rotating column 382; a second control rotating column 383 matched with the first control rotating column 382 is connected onto the fixed sliding column 13 in a sliding mode, and a second thread matched with the first thread and a second gear matched with the first gear are arranged on the second control rotating column 383; the second control rotary column 383 is provided with a limiting round hole matched with the limiting round plate; the first thread is left-handed, and the second thread is right-handed.

As shown in fig. 4, 5 and 6, when the medical staff uses the control adjustment structure, the medical staff rotates the active control worm 380, the active control worm 380 drives the active control worm gear 381 to rotate, the active control worm gear 381 drives the first control rotary post 382 to rotate, the first control rotary post 382 drives the first gear and the first thread to rotate, the first thread is matched with the second thread on the second control rotary post 383 and the second gear drives the second control rotary post 383 to slide, the second control rotary post 383 pulls the limit circular plate to move through the limit circular hole, and the limit circular plate pulls the second adjustment bevel gear 367 and the first adjustment bevel gear to separate from each other through the first connection cylinder; in the present invention, both ends of the second control rotating column 383 are provided with a sliding key, which prevents the second control rotating column 383 from rotating; preferably, the gear ratio of the first gear and the second gear of the present invention is 1/1; the present invention can control the rotation of the pressing plate 308, and at the same time, when the first and second bevel adjusting gears 367 are separated from each other, the locking structure can prevent the pressing plate 308 from freely rotating, thereby improving the functional versatility and safety of the present invention.

The thickness of the first gear is smaller than that of the second gear; the length of the first thread is less than the length of the second thread.

As shown in fig. 6, the thickness of the first gear is smaller than that of the second gear in the present invention; the length of the first thread is smaller than that of the second thread, which facilitates the sliding control of the second control rotary post 383.

The locking structure comprises a second connecting cylinder 368 coaxially and fixedly connected with a second adjusting bevel gear 367, a connecting rod 369 is rotatably connected to the second connecting cylinder 368, a connecting plate 370 is fixedly connected to one end, far away from the second connecting cylinder 368, of the connecting rod 369, and the connecting plate 370 is slidably connected with the fixed sliding column 13; a guide locking sliding cylinder 371 is fixedly connected to the connecting plate 370, a guide locking sliding pin 372 is slidably connected to the guide locking sliding cylinder 371, a second spring is fixedly connected to the guide locking sliding cylinder 371, and the second spring is fixedly connected to the guide locking sliding pin 372; the adjusting rotating shaft 4 is fixedly connected with a limiting disc 373, and locking round holes matched with the guide locking sliding pins 372 are uniformly distributed on the limiting disc 373.

As shown in fig. 5 and 6, when the medical staff uses the present invention, when the first adjustment bevel gear 367 and the second adjustment bevel gear 367 are separated from each other, the second adjustment bevel gear 367 pulls the second connecting cylinder 368 to move, the second connecting cylinder 368 pulls the connecting rod 369 to move, the connecting rod 369 pulls the connecting plate 370 to slide and gradually approach to the fixed sliding column 13, the connecting plate 370 drives the guide locking sliding cylinder 371 to move, the guide locking sliding cylinder 371 drives the second spring and the guide locking sliding pin 372 to gradually approach to the limiting plate 373, and when the locking round hole on the limiting plate 373 corresponds to the guide locking sliding pin 372, the guide locking sliding pin 372 is inserted into the locking round hole to prevent the pressing plate 308 from rotating; when the locking round hole on the limiting disc 373 and the guide locking sliding pin 372 do not directly correspond to each other, the guide locking sliding pin 372 will be pushed against the limiting disc 373, and when the pressing plate 308 rotates a little angle, the guide locking sliding pin 372 will directly enter the locking round hole under the elastic force of the second spring, so as to prevent the pressing plate 308 from rotating; according to the invention, after the first adjusting bevel gear and the second adjusting bevel gear 367 are separated from each other, the pressing plate 308 can be directly locked, so that the pressing plate 308 is prevented from continuously rotating, and the stability of the invention is improved.

A pair of symmetrical first transmission worm gears 321 is rotatably connected to the arc plate, the first transmission worm gears 321 are all meshed with the first transmission worm 320, and first driving belt wheels are coaxially and fixedly connected to the first transmission worm gears 321; the arc plate is fixedly connected with a limiting support plate 5, the limiting support plate 5 is rotatably connected with a first driven belt wheel 322 matched with a first driving belt wheel, the first driven belt wheel 322 is fixedly connected with a connecting handle 323, the connecting handle 323 is fixedly connected with a limiting guide cylinder 12, a limiting bolt is slidably connected in the limiting guide cylinder 12, a third spring is sleeved on the limiting bolt, and a limiting plate matched with the third spring is fixedly connected on the limiting bolt; the limiting support plate 5 is provided with a guiding arc slideway matched with the limiting bolt; a second limit gear 345 is rotatably connected to the limit support plate 5, and a limit jack matched with the limit bolt is arranged on the second limit gear 345; the second limit gear 345 is connected with a limit transmission structure matched with the fixed sliding column 13.

As shown in fig. 7 and 8, the medical staff can adjust the sliding distance of the fixed sliding column 13 on the guide cylinder 12 as required, the medical staff rotates the first transmission worm 320, the first transmission worm 320 drives the two first transmission worm gears 321 to rotate, the two first transmission worm gears 321 respectively drive the first driving pulley to rotate, the two first driving pulleys respectively drive the first driven pulley 322 to rotate, the first driven pulley 322 drives the connecting handle 323 to rotate on the limit support plate 5, the connecting handle 323 drives the limit bolt to slide on the guide arc slideway, the angle between the limit bolt and the limit insertion hole is adjusted, the sliding distance of the fixed sliding column 13 on the guide cylinder 12 is controlled, the pressing plate 308 is prevented from pressing the arms of the unconscious patient excessively, and the safety of the invention is improved.

The limiting transmission structure comprises a limiting power rack 340 arranged on the fixed sliding column 13, and a limiting power gear 341 matched with the limiting power rack 340 is rotatably connected to the guide cylinder 12; a limit driving bevel gear is coaxially and fixedly connected to the limit power gear 341, a limit worm is rotatably connected to the arc plate, and a limit driven bevel gear 342 meshed with the limit driving bevel gear is fixedly connected to the upper end of the limit worm; the arc plate is rotatably connected with a limiting worm wheel 343 meshed with a limiting worm, and a limiting driving belt wheel is coaxially and fixedly connected to the limiting worm wheel 343; the arc plate is rotatably connected with a first limit gear meshed with a second limit gear 345, and the first limit gear is coaxially and fixedly connected with a limit driven belt wheel 344 matched with a limit driving belt wheel.

As shown in fig. 7 and 8, when the fixed sliding post 13 slides on the guiding cylinder 12, the limit power rack 340 on the fixed sliding cylinder drives the limit power gear 341 to rotate, the limit power gear 341 drives the limit driving bevel gear to rotate, the limit driving bevel gear drives the limit driven bevel gear 342 to rotate, the limit driven bevel gear 342 drives the limit worm to rotate, the limit worm drives the limit worm gear 343 to rotate, the limit worm gear 343 drives the limit driving pulley to rotate, the limit driving pulley drives the limit driven pulley 344 to rotate, the limit driven pulley 344 drives the first limit gear to rotate, the first limit gear drives the second limit gear 345 to rotate, the second limit gear 345 drives the limit jack to rotate, when the limit jack and the limit bolt correspond to each other, the third spring inserts the limit bolt into the limit jack through the limit plate, the invention is convenient to use, and can adjust the sliding distance of the fixed sliding post 13 on the guiding cylinder 12, the excessive pressing of the arm of the patient by the pressing plate 308 is prevented, and the safety and the convenience of the invention are improved.

A palm pressing and fixing device is arranged on the arm supporting plate 1 and comprises a pressing worm wheel which is rotatably connected to the arm supporting plate 1, and a pressing worm 14 which is meshed with the pressing worm wheel is rotatably connected to the arm supporting plate 1; the pressing worm wheel is fixedly connected with a rotating handle 15, the rotating handle 15 is rotatably connected with a pressing screw rod 16, the pressing screw rod 16 is connected with a pressing handle 11 in a threaded mode, and the pressing handle 11 is connected with the rotating handle 15 in a sliding mode.

As shown in fig. 1 and 9, when using the present invention, a medical worker needs to fix an arm when puncturing a patient, and the arm size is different for different patients; according to the invention, the pressing worm 14 can be rotated, the pressing worm 14 drives the pressing worm wheel to rotate, the pressing worm wheel drives the rotating handle 15 to rotate, the rotating handle 15 drives the pressing handle 11 to rotate, the pressing handle 11 is aligned with the palm of a patient, then a medical worker rotates the pressing screw rod 16, the pressing screw rod 16 drives the pressing handle 11 to slide on the rotating handle 15, and the pressing handle 11 fixes the hand of the patient; the palm pressing and fixing device can conveniently fix the palm of the patient, can be used for different patients, and improves the convenience of the palm pressing and fixing device.

The rotary fixing device comprises a supporting seat for supporting the rotary fixing device, a lower supporting column 9 is fixedly connected to the supporting seat, an upper supporting column 8 is connected to the lower supporting column 9 in a sliding mode, electric push rods are arranged on the lower supporting column 9 and the supporting seat, and an upper telescopic rod of each electric push rod is fixedly connected with the upper supporting column 8; a fixed adjusting seat 6 is fixedly connected to the upper end of the upper supporting column 8, a jack is arranged on the fixed adjusting seat 6, a fixed rotating cylinder is rotatably connected to the fixed adjusting seat 6, fixing holes matched with the jacks on the fixed adjusting seat 6 are uniformly distributed in the fixed rotating cylinder, and a fixing bolt 7 is inserted into the jack and the fixing holes; and a control switch matched with the electric push rod is arranged on the arm supporting plate 1.

Symmetrical positioning columns 10 are uniformly distributed on the arm supporting plate 1, positioning holes matched with the positioning columns 10 are formed in the arc supporting frame 2, positioning holes are formed in the positioning columns 10 and the arc supporting frame 2, and positioning pins are inserted in the positioning holes.

As shown in fig. 1, when the medical staff uses the invention, the medical staff puts the invention beside the hospital bed, presses the control switch of the electric push rod, firstly adjusts the arm support plate 1 to a proper height, then rotates the arm support plate 1, rotates the arm support plate 1 to a proper position, then inserts the fixing bolt 7 into the corresponding jack and fixing hole, then presses the control switch of the electric push rod again, and clings one end of the support plate far away from the pressing handle 11 to the hospital bed, then stops pressing the control switch, puts the arm of the patient on the support plate, when in specific use, can move the invention properly according to the length of the arm of the patient, so that the palm of the patient can be fixed by the pressing handle 11; then selecting and using a plurality of arm fixing pieces 3, inserting the arc support frame 2 on the positioning column 10 through the positioning holes after selection, and then inserting the positioning pins in the positioning holes; preferably, the diameters of the positioning hole and the positioning pin are the same, and the diameter of the positioning jack is the same as that of the positioning column 10; preferably, the model of the electric push rod selected by the invention is XTL1000, the output voltage is 24V, the maximum thrust is 1000N, and the propelling speed is 12 mm/s; the arm support plate can be conveniently lifted and lowered, and is suitable for sickbeds with different heights, as shown in figure 1, the front end of the arm support plate 1 is thicker, the rear end of the arm support plate is thinner, the thinner part of the arm support plate can be directly supported on the sickbed, the arm support plate is more convenient to use, and the convenience and the stability of the arm support plate are improved; after the patient is punctured, the positioning pin can be pulled out, the arc support frame 2 is directly taken down from the arm support plate 1, the palm is loosened, and then the arm support plate 1 slowly slides out from the lower end of the arm of the patient.

The working process of the invention is as follows:

when the medical care personnel use the invention, the invention is placed beside a sickbed, the control switch of the electric push rod is pressed, the arm supporting plate 1 is firstly adjusted to a proper height, then the arm supporting plate 1 is rotated, after the arm supporting plate 1 is rotated to a proper position, the fixing bolt 7 is inserted into the corresponding jack and fixing hole, then the control switch of the electric push rod is pressed again, one end of the supporting plate far away from the pressing handle 11 is clung to the sickbed, then the control switch is stopped being pressed, the arm of the patient is placed on the supporting plate, when in specific use, the invention can be properly moved according to the length of the arm of the patient, so that the palm of the patient can be fixed by the pressing handle 11; the fixing piece is selected to use, the arc support frame 2 is inserted into the positioning column 10 through the positioning hole, and then the positioning pin is inserted into the positioning hole to fix the arc support frame 2.

When the medical staff uses the invention, when fixing the arm of the patient, especially for the patient with weak consciousness, the medical staff can rotate the first transmission worm 320 to control the sliding distance of the fixed sliding column 13 on the guide cylinder 12; medical personnel rotates the first transmission worm 320, the first transmission worm 320 drives the two first transmission worm wheels 321 to rotate, the two first transmission worm wheels 321 respectively drive the first driving belt wheels to rotate, the two first driving belt wheels respectively drive the first driven belt wheels 322 to rotate, the first driven belt wheels 322 drive the connecting handle 323 to rotate on the limiting support plate 5, the connecting handle 323 drives the limiting bolt to slide on the guiding arc slideway, and the angle between the limiting bolt and the limiting jack is adjusted; after the adjustment is completed, the medical staff can rotate the power fixing worm 301, the fixed sliding column 13 slides on the guiding cylinder 12, the limit power rack 340 on the fixed sliding cylinder drives the limit power gear 341 to rotate, the limit power gear 341 drives the limit driving bevel gear to rotate, the limit driving bevel gear drives the limit driven bevel gear 342 to rotate, the limit driven bevel gear 342 drives the limit worm to rotate, the limit worm drives the limit worm wheel 343 to rotate, the limit worm wheel 343 drives the limit driving pulley to rotate, the limit driving pulley drives the limit driven pulley 344 to rotate, the limit driven pulley 344 drives the first limit gear to rotate, the first limit gear drives the second limit gear 345 to rotate, the second limit gear 345 drives the limit jack to rotate, when the limit jack and the limit bolt correspond to each other, the third spring inserts the limit bolt into the limit jack through the limit plate, the stationary spool 13 will not be able to slide on the guide cylinder 12.

When a medical worker rotates the power fixing worm 301, the power fixing worm 301 drives the two power fixing worm wheels 302 to rotate at the same time, the two power fixing worm wheels 302 respectively drive the first driving fixing belt wheels to rotate, the two first driving fixing belt wheels simultaneously drive the two first driven fixing belt wheels 303 to rotate, the two first driven fixing belt wheels 303 respectively drive the first fixing worm to rotate, the two first fixing worm wheels respectively drive the first fixing worm wheels 304 to rotate, the two first fixing worm wheels 304 respectively drive the second fixing worm to rotate, the second fixing worm wheels respectively drive the second fixing worm wheels 305 to rotate, the two second fixing worm wheels 305 respectively drive the fixing worm wheels 306 to rotate, and the two fixing worm wheels 306 respectively drive the fixing sliding column 13 to slide on the guide cylinder 12 through the fixing rack 307 to fix the arm of the patient with the pressing plate 308 sliding; while the fixed sliding column 13 slides on the guide cylinder 12, the driving adjustment gear on the fixed sliding column 13 rotates through the adjustment rack 360, the driving adjustment gear drives the driven adjustment gear 361 to rotate, the driven adjustment gear 361 drives the driving adjustment belt wheel 362 to rotate, the driving adjustment belt wheel 362 drives the driven adjustment belt wheel 363, the driven adjustment belt wheel 363 drives the driving adjustment bevel gear to rotate, the driving adjustment bevel gear drives the driven adjustment bevel gear 364 to rotate, the driven adjustment bevel gear 364 drives the first adjustment gear 365 to rotate, the first adjustment gear 365 drives the second adjustment gear 366 to rotate, the second adjustment gear 366 drives the first adjustment bevel gear to rotate, the first adjustment bevel gear drives the second adjustment bevel gear 367 to rotate, the second adjustment bevel gear 367 drives the adjustment rotation shaft 4 to rotate through the limit sliding rod, the adjustment rotation shaft 4 drives the pressing plate 308 to rotate and gradually approach the arm of the patient, the arm of the patient is pressed.

When the device is used, the active control worm 380 can be rotated as required to separate the second adjustment bevel gear 367 from the first adjustment bevel gear, the active control worm 380 drives the active control worm wheel 381 to rotate, the active control worm wheel 381 drives the first control rotating column 382 to rotate, the first control rotating column 382 drives the first gear and the first thread to rotate, the first thread is matched with the second thread on the second control rotating column 383 and the second gear drives the second control rotating column 383 to slide, the second control rotating column 383 pulls the limiting circular plate to move through the limiting circular hole, and the limiting circular plate pulls the second adjustment bevel gear 367 and the first adjustment bevel gear to separate through the first connecting cylinder; when the first adjusting bevel gear 367 is separated from the second adjusting bevel gear 367, the second adjusting bevel gear 367 pulls the second connecting cylinder 368 to move, the second connecting cylinder 368 pulls the connecting rod 369 to move, the connecting rod 369 pulls the connecting plate 370 to slide to be gradually close to the fixed sliding column 13, the connecting plate 370 drives the guide locking sliding cylinder 371 to move, the guide locking sliding cylinder 371 drives the second spring and the guide locking sliding pin 372 to be gradually close to the limiting disc 373, and when the locking round hole in the limiting disc 373 corresponds to the guide locking sliding pin 372, the guide locking sliding pin 372 is inserted into the locking round hole to prevent the pressing plate 308 from rotating; when the dead-locking round hole on the limiting disc 373 and the guide dead-locking sliding pin 372 do not directly correspond to each other, the guide dead-locking sliding pin 372 can be pushed against the limiting disc 373, when the pressing plate 308 rotates by a certain angle, the guide dead-locking sliding pin 372 can directly enter the dead-locking round hole under the elastic force of the second spring to prevent the pressing plate 308 from rotating, and then the power fixing worm 301 is continuously rotated to enable the pressing plate 308 to press the arm of the patient.