Arm infusion fixing support capable of adjusting position of arm

Abstract

The invention relates to the technical field of infusion assistance, in particular to an arm infusion fixing support capable of adjusting the position of an arm, the arm infusion fixing support comprises a base, an adjusting frame, an arm bracket, a rigid adjusting unit and a flexible adjusting unit, and the rigid adjusting unit and the flexible adjusting unit can be matched with the arm for rigid adjustment and flexible adjustment respectively. By combining the rigid adjustment function and the flexible adjustment function and allowing selective switching between the rigid adjustment function and the flexible adjustment function, the patient can conduct self-adaptive adjustment on the arm, and the requirements for comfort and stability of different patients in medical scenes are met.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion assistance, and particularly relates to an arm infusion fixing bracket with adjustable arm position. Background Technique

[0002] An arm infusion bracket is a medical assistance device used to fix the position of a patient's arm during medical infusion, aiming to improve the efficiency, stability and patient comfort of infusion. The bracket restricts the movement range of the patient's arm to ensure that it remains in an appropriate position to prevent the infusion process from being affected.

[0003] At present, there are already various types of infusion brackets on the market. According to functions, they can be divided into ordinary infusion racks, multi-functional infusion racks and electric infusion racks; and according to different use parts and functions, arm infusion fixing brackets can be divided into various types, such as elbow fixators, forearm fixators, wrist fixators, full-arm fixators, and special-purpose fixating brackets, which provide basic arm support and restrict the movement range for patients to meet the usage requirements of general infusion scenarios; during the infusion process, the shaking of the patient's arm may cause the infusion needle to shift, resulting in infusion interruption or accidents. The arm fixing bracket can restrict arm movement, maintain its stability, ensure the continuity of the infusion process, thereby improving the safety and effect of infusion; and the infusion bracket can provide comfortable support and relieve patient discomfort. During long-term infusion, the patient's arm needs to maintain a fixed posture, resulting in patient fatigue and discomfort. The arm infusion fixing bracket is usually equipped with structures such as arc-shaped grooves, flexible materials or sponge pads to provide comfortable support for patients and reduce the burden on the arm. At the same time, when inserting the needle, the arm fixing bracket can fix the patient's arm in an appropriate position, making the blood vessels more clearly prominent, facilitating the operation of medical staff, improving the success rate of inserting the infusion needle, and reducing operation errors; for example, in the "Infusion Nursing Bracket with Adjustable Arm Position" with the patent publication number CN118217477A, an infusion bracket with a support arm and an adjustment mechanism is proposed. This bracket provides a certain degree of comfort and adjustability for patients through simple adjustment functions. However, this solution only provides general support and small-range adjustment functions, lacking comprehensive satisfaction of patients' personalized needs. In addition, existing brackets often only focus on basic functions in design, while ignoring the comfortable experience and dynamic needs of patients during long-term infusion.

[0004] Although the existing technologies have provided convenience for infusion patients in terms of arm fixation and support, there are still many problems and deficiencies. The adjustment functions of most existing arm infusion fixation brackets are relatively single, only supporting simple adjustment of arm height or angle, and only providing a basic support structure. Prolonged use may cause discomfort such as arm soreness and compression to patients, unable to meet the personalized needs of different patients, nor adapt to various medical scenarios. Moreover, it usually adopts a rigid fixation method. Although it can prevent the arm from shaking, it is easy to cause a sense of compression and fatigue to patients during long-term use, lacking consideration for comfort and flexible support, and having certain defects. Therefore, it is necessary to develop an arm infusion fixation bracket with adjustable arm position. Summary of the Invention

[0005] In view of the above-mentioned defects and problems, the present invention provides an arm infusion fixation bracket with adjustable arm position, combining rigid adjustment and flexible adjustment functions, and allowing selective switching between the two, enabling patients to perform adaptive adjustment on the arm to meet the comfort and stability requirements of different patients in medical scenarios.

[0006] The solution adopted by the present invention to solve its technical problems is: an arm infusion fixation bracket with adjustable arm position, including a base, an adjustment frame, an arm bracket, a rigid adjustment unit, and a flexible adjustment unit. The base is provided with an infusion rack connection part. The adjustment frame is composed of a lifting component and a horizontal rotation component. The lifting component includes a vertical guide sleeve arranged on the side of the base, and a vertical linear cylinder is arranged inside the vertical guide sleeve. The output end of the vertical linear cylinder is connected to a sliding conduit inside the vertical guide sleeve. The horizontal rotation component includes a horizontal rotation cylinder arranged on the top of the sliding conduit. The output end of the horizontal rotation cylinder is connected to a seat plate, and the arm bracket is sleeved and connected to the seat plate. The vertical linear cylinder and the horizontal rotation cylinder each include a main air path and an auxiliary air path. The auxiliary air path is arranged in parallel with the main air path, and the main air paths are respectively connected to the corresponding vertical linear cylinder and horizontal rotation cylinder. The rigid adjustment unit includes main valves respectively used to open and close the main air paths of the vertical linear cylinder and the horizontal rotation cylinder. The flexible adjustment unit includes auxiliary valves respectively used to open and close the auxiliary air paths of the vertical linear cylinder and the horizontal rotation cylinder, and the auxiliary valves are also connected to auxiliary cylinders. Balance springs are arranged on both sides of the piston inside the auxiliary cylinders. When both the main valve and the auxiliary valve are in the open state, the position of the arm can be freely and rigidly adjusted. When the main valve is closed, the position of the arm can be further flexibly adjusted. When the auxiliary valve is closed, the position of the arm can be completely locked.

[0007] Advantages of the present invention: The structure of the present invention is unique and ingeniously designed. Through the vertical linear cylinder and the dual-channel control of the main air circuit and the auxiliary air circuit, the patient's arm can be freely adjusted up and down in the vertical direction. By using the rigid adjustment unit and the flexible adjustment unit in combination, the arm can be initially rigidly locked in position, while allowing small-amplitude flexible adjustment within the locked range. The patient can adjust the height of the arm according to their own needs. Through the horizontal rotary cylinder and the dual-channel control of the main air circuit and the auxiliary air circuit, the patient's arm can be freely rotated and adjusted in the horizontal direction. By using the rigid adjustment unit and the flexible adjustment unit in combination, the arm can be initially rigidly locked in position and flexibly rotated within a small range to meet the needs of the arm at different angles. By controlling the vertical linear cylinder and the horizontal rotary cylinder through the main air circuit (main valve 1 and main valve 2), after the patient's arm is adjusted to a roughly suitable position, rigid locking can be achieved by closing the main valve to prevent further deviation of the arm position and fix the arm posture during infusion to keep the arm stationary. On the basis of rigid adjustment, the auxiliary air circuit (auxiliary valve 1 and auxiliary valve 2) is connected to the auxiliary cylinder body, and by using the piston and the balance spring inside the auxiliary cylinder body, the patient's arm is allowed to move flexibly within a small range to improve the comfort of the patient. Within the locked position range, the patient can still adaptively adjust the arm to the best fine-tuning position. The interlocking control design of the main valve and the auxiliary valve enables the arm to freely switch between different adjustment modes. After closing the auxiliary valve, the arm position will be completely locked to achieve a complete fixation effect, meeting the needs of patients with different body types for adjusting the arm position. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. is a diagram of the usage state of the present invention.

[0009] Figure 2 FIG. is one of the schematic structural diagrams of the present invention.

[0010] Figure 3 FIG. is another schematic structural diagram of the present invention.

[0011] Figure 4 FIG. is the third schematic structural diagram of the present invention.

[0012] Figure 5 FIG. is a sectional view of the sliding mechanism.

[0013] Figure 6 FIG. is another sectional view of the sliding mechanism.

[0014] Figure 7 FIG. is a schematic connection diagram of the main air circuit and the auxiliary air circuit of the vertical linear cylinder and the horizontal rotary cylinder.

[0015] In the figure: 1 - seat, 2 - base, 201 - base plate, 202 - vertical plate, 203 - short hinge plate, 204 - elastic ring belt, 205 - hook rod, 3 - adjusting frame, 31 - lifting assembly, 311 - vertical guide sleeve, 312 - sliding catheter, 313 - vertical linear cylinder, 314 - main air path 1, 315 - auxiliary air path 1, 32 - horizontal rotation assembly, 321 - horizontal rotation cylinder, 322 - main air path 2, 323 - auxiliary air path 2, 4 - seat board, 5 - arm bracket, 51 - fixing belt, 61 - main valve 1, 62 - main valve 2, 71 - auxiliary valve 1, 72 - auxiliary valve 2, 81 - auxiliary cylinder block 1, 82 - auxiliary cylinder block 2, 9 - piston, 10 - balance spring, 11 - infusion stand connection part, 12 - infusion stand, 13 - sliding mechanism, 131 - upper sliding groove, 132 - lower sliding groove, 133 - slider, 134 - friction strip, 135 - buffer spring, 14 - adaptive mechanism, 141 - U-shaped elastic pin, 142 - sleeve, 143 - pressing cone part, 144 - pressing body. Specific embodiments

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Example 1. The adjustment function of the existing arm infusion fixing bracket is relatively single, only supporting simple adjustment of the arm height or angle, and only providing a basic support structure. Prolonged use may cause discomfort such as arm soreness and compression to the patient, unable to meet the personalized needs of different patients, nor adapt to various medical scenarios. Moreover, it usually adopts a rigid fixing method. Although it can prevent the arm from shaking, it is easy to cause a sense of compression and fatigue to the patient during long-term use, lacking consideration for comfort and flexible support.

[0018] To address the above problems, this embodiment provides an arm infusion fixing bracket with adjustable arm position, as Figures 1-4 shown, including a base 2 movably installed on the armrest of the seat 1. The base 2 includes a base plate 201, a vertical plate 202, a short hinge plate 203, an elastic ring belt 204, and a hook rod 205. The vertical plate 202 and the short hinge plate 203 are respectively arranged at both ends of the base plate 201, and the top of the short hinge plate 203 is hinged to the base plate 201. The elastic ring belt 204 is arranged above the base plate 201, and the elastic ring belt 204 can be elastically stretched to constraint and press the short hinge plate 203. Moreover, the end of the elastic ring belt 204 can be connected to the hook rod 205 in the vertical plate 202 to firmly fix the overall base 2 on the armrest of the seat 1. The elastic ring belt 204 can apply outward and upward pressure to the base 2 to ensure the stability of the base 2, prevent the base 2 from moving, and can adapt to armrests of different sizes of the seat 1. An infusion stand connection part 11 is also provided on the base 2, and the infusion stand 12 can be sleeved in the infusion stand connection part 11 and locked by bolts.

[0019] AsFigures 2-4 As shown in the figure, the adjusting frame 3 includes a lifting component 31 and a horizontal rotation component 32. The lifting component 31 includes a vertical guide sleeve 311 provided on the side of the base 2. A sliding catheter 312 is slidably sleeved in the vertical guide sleeve 311, and a vertical linear cylinder 313 is installed inside the vertical guide sleeve 311. The output end of the vertical linear cylinder 313 is connected to the inner top of the sliding catheter 312. The output end of the vertical linear cylinder 313 can vertically lift, enabling the sliding catheter 312 to achieve synchronous lifting; the horizontal rotation component 32 includes a horizontal rotation cylinder 321 provided on the top of the sliding catheter 312. The output end of the horizontal rotation cylinder 321 can horizontally rotate, and a seat plate 4 is fixedly connected to the output end of the horizontal rotation cylinder 321. An arm bracket 5 is sleeved on the seat plate 4. The length of the arm bracket 5 is greater than the length of the seat plate 4. The arm bracket 5 is used to support the patient's arm, and the fixing strap 51 on the arm bracket 5 can elastically restrain the patient's arm, preventing the arm from accidentally shifting without causing a sense of compression and improving comfort.

[0020] As Figure 7 shown, both the vertical horizontal cylinder and the horizontal rotation cylinder 321 respectively include a main air path and an auxiliary air path. That is, the vertical horizontal cylinder includes a main air path one 314 and an auxiliary air path one 315. The auxiliary air path one 315 is arranged in parallel with the main air path one 314. Both ends of the main air path one 314 are respectively connected to the two side cavities of the vertical linear cylinder 313; the horizontal rotation cylinder 321 includes a main air path two 322 and an auxiliary air path two 323. The auxiliary air path two 323 is also arranged in parallel with the main air path two 322. Both ends of the main air path two 322 are respectively connected to the two side cavities of the horizontal rotation cylinder 321.

[0021] The rigid adjustment unit includes a main valve one 61 and a main valve two 62. The main valve one 61 and the main valve two 62 are respectively used to open and close the control of the main air path one 314 of the vertical linear cylinder 313 and the main air path two 322 of the horizontal rotation cylinder 321. The main valve one 61 is arranged on the main air path one 314 of the vertical linear cylinder 313, and the main valve two 62 is arranged on the main air path two 322 of the horizontal rotation cylinder 321. And control valve rods or knobs are arranged on both the main valve one 61 and the main valve two 62.

[0022] The flexible adjustment unit includes an auxiliary valve one 71 and an auxiliary valve two 72, as well as an auxiliary cylinder body one 81 and an auxiliary cylinder body two 82. The auxiliary valve one 71 and the auxiliary valve two 72 are respectively used to open and close the control of the auxiliary air path one 315 of the vertical linear cylinder 313 and the auxiliary air path two 323 of the horizontal rotation cylinder 321. The auxiliary valve one 71 is arranged on the auxiliary air path one 315 of the vertical linear cylinder 313, and the auxiliary valve two 72 is arranged on the auxiliary air path two 323 of the horizontal rotation cylinder 321. And control valve rods or knobs are arranged on both the auxiliary valve one 71 and the auxiliary valve two 72; The auxiliary valve 1-71 is connected to both ends of the auxiliary cylinder block 1-81 through an air circuit, and the auxiliary valve 2-72 is connected to both ends of the auxiliary cylinder block 2-82 through an air circuit, so that the auxiliary cylinder block 1-81 can be connected to the main air circuit 1-314 of the vertical linear cylinder 313 through the auxiliary valve 1-71, and the auxiliary cylinder block 2-82 can be connected to the main air circuit 2-322 of the horizontal rotary cylinder 321 through the auxiliary valve 2-72.

[0023] A piston 9 is arranged inside the auxiliary cylinder block 1-81 and the auxiliary cylinder block 2-82. Balance springs 10 are arranged on both sides of the piston 9, and the internal stroke of the auxiliary cylinder block 1-81 and the auxiliary cylinder block 2-82 is relatively short.

[0024] When the main valve 1-61, the main valve 2-62, the auxiliary valve 1-71 and the auxiliary valve 2-72 are all in the open state, the position of the arm can be freely and rigidly adjusted. When the main valve 1-61 and the main valve 2-62 are closed, the position of the arm can be further flexibly adjusted. When the auxiliary valve 1-71 and the auxiliary valve 2-72 are closed, the position of the arm can be completely locked.

[0025] After the patient's arm is fixed on the arm bracket 5, when the main valve 1-61 of the vertical linear cylinder 313 and the auxiliary valve 2-72 are all opened, the main air circuit 1-314 and the vertical linear cylinder 313 are in a connected state. When the patient's arm moves up or down, driven by the arm, the output end of the vertical linear cylinder 313 will be lifted and lowered freely synchronously, so that the position of the arm can be freely adjusted vertically up and down, and the arm can be initially adjusted to a suitable approximate optimal height position. When the suitable approximate optimal height position for the arm is reached, the main valve 1-61 is closed, and the vertical linear cylinder 313 will be initially locked, realizing the vertical rigid adjustment of the arm. At this time, the auxiliary valve 1-71 is in the open state, and the auxiliary air circuit 1-315 and the vertical linear cylinder 313 are in a connected state. The arm can still move vertically within a small range freely at the approximate optimal height position, so as to adjust the arm a second time to the most suitable height for the arm, realizing the flexible adjustment of the arm. Then, after the auxiliary valve 1-71 is closed, the patient's arm loses any degree of freedom of vertical movement.

[0026] Through the combined use of the main valve 1-61 and the auxiliary valve 1-71, the vertical rigid locking position of the arm can be initially realized, and at the same time, small-amplitude flexible adjustment within the vertical locking range is allowed, so as to meet the precise needs of patients. The vertical lifting and adjustment function is suitable for the heights and body types of different patients, improving comfort.

[0027] When the main valve II 62 and the auxiliary valve II 72 of the horizontal rotation cylinder 321 are all opened, the main air path II 322 and the horizontal rotation cylinder 321 are in a connected state. With the arm as the power, the patient can horizontally rotate to freely adjust the position of the arm and initially adjust the arm to a roughly optimal angle position suitable for the patient. When the roughly optimal angle position suitable for the arm is reached, the main valve II 62 is closed, and the horizontal rotation cylinder 321 will be initially locked, realizing the rigid adjustment of the rotation of the arm. At this time, the auxiliary valve II 72 is in an open state, and the auxiliary air path II 323 and the horizontal rotation cylinder 321 are in a connected state. The arm can still perform free small-range rotational movement adjustment at the roughly optimal angle position, so as to secondarily adjust the arm to the most suitable angle for the arm, realizing the flexible adjustment of the arm. Then, after the auxiliary valve II 72 is closed, the patient's arm loses any degree of freedom of rotational movement.

[0028] Through the combined control of the main valve II 62 and the auxiliary valve II 72, it is possible to initially achieve the rigid locking position of the rotation of the arm, and at the same time allow small-amplitude flexible adjustment within the rotation locking range. The horizontal rotation adjustment function can adjust the angle of the infusion tube for adaptive adjustment.

[0029] In view of the individual differences of patients, it is possible to first perform rigid adjustment to freely adjust the arm to a roughly optimal position suitable for the patient, and then, within the range of the roughly optimal position, perform flexible adjustment to freely move the arm in small amplitudes to achieve adaptive adjustment, with the best adaptive effect. The linkage design of the main valve and the auxiliary valve enables the arm to freely switch between different adjustment modes.

[0030] Moreover, for patients with weak arms, a boosting function can be added. The boosting function is realized through a boosting unit. The boosting unit includes a pressure sensor and a micro air pump. The micro air pump is arranged on the main air path I 314 of the vertical linear cylinder 313. The pressure sensor is arranged inside the fixing belt 51 of the arm bracket 5, and the pressure sensor is signal-connected to the controller. When the patient's arm is lifted upward, the pressure sensor can monitor the pressure change of the patient's arm and send a signal to the controller to judge whether the patient needs boosting. The controller controls the micro air pump according to the signal change of the pressure sensor to provide vertical lifting assistance for the patient to help the patient complete the arm adjustment. The boosting unit can trigger the micro air pump to assist only through small movements of the patient's arm, realizing the vertical lifting adjustment of the arm, reducing the operation difficulty of the patient. When the patient's arm reaches the roughly optimal height position and the signal of the pressure sensor weakens, the micro air pump will automatically stop boosting to avoid excessive intervention and meet the needs of special patient groups. After the main valve I 61 is closed, the balance spring 10 will release pressure, enabling the output end of the vertical linear cylinder 313 to automatically balance the vertical movement. At this time, the arm can still perform free small-range vertical movement adjustment at the optimal height position.

[0031] Such as Figures 5-6As shown, a sliding mechanism 13 is also provided between the arm bracket 5 and the seat plate 4, through which the arm bracket 5 can be moved forward and backward to adjust the front and rear position of the patient's arm. The sliding mechanism 13 includes an upper slide groove 131 and a lower slide groove 132 arranged at the bottom of the arm bracket 5 and the top of the seat plate 4, and a slider 133 is set between the upper slide groove 131 and the lower slide groove 132. The slider 133 is I-shaped, and the upper two end sides of the slider 133 are clamped in the dovetail parts on both sides of the upper slide groove 131, and the lower two sides of the slider 133 are clamped in the dovetail parts on both sides of the lower slide groove 132. A ball bearing is installed at the bottom of the slider 133, so that the slider 133 can slide in the lower slide groove 132, and a friction strip 134 is arranged at the top of the upper slide groove 131, and the top of the slider 133 contacts the friction strip 134. The sliding stroke of the slider 133 is the length of the lower slide groove 132, and buffer springs 135 can also be installed at the inner two ends of the upper slide groove 131.

[0032] When the patient's arm moves forward and backward, the arm support 5 will synchronously drive the slider 133 to slide to adjust the front and rear position of the arm. When the arm support 5 moves, the friction strip 134 provides friction to the slider 133 when it moves, so that the arm support 5 moves with the slider 133. After the slider 133 moves to the end of the slide groove, the slider 133 is limited, and the arm support 5 can make additional movements on the seat plate 4 relative to the slider 133. The buffer spring 135 can avoid the noise generated when the slider 133 moves to the inner end side of the lower slide groove 132.

[0033] Preferably, an adaptive mechanism 14 is further provided at the end of the slider 133 to increase the friction between the slider 133 and the friction strip 134. By increasing the friction between the slider 133 and the friction strip 134 through the adaptive mechanism 14, it is possible to avoid the slider 133 not moving to the inner end side of the lower slide groove 132, which may cause the arm bracket 5 to slide relative to the slider 133 in advance due to the weakening of the friction between the slider 133 and the friction strip 134, thereby avoiding the instability of the arm bracket 5, such as Figures 5-6 As shown, the adaptive mechanism 14 includes a U-shaped elastic pin 141, a sleeve 142 and a pressure-contact cone 143. The U-shaped elastic pin 141 is sleeved on both ends of the slider 133 through the sleeve 142. The spring of the U-shaped elastic pin 141 is located above the sleeve 142, and a top pressing body 144 is installed on the top of the U-shaped elastic pin 141. The inner end side of the lower sliding groove 132 is provided with a pressure-contact cone 143, and the bottom of the pressure-contact cone 143 is an arc surface. In the initial state, under the action of the U-shaped elastic pin 141, the pressing body 144 can apply a pressing force to the friction strip 134 in the sliding groove 131 on the arm bracket 5, increasing the frictional force between the slider 133 and the friction strip 134. The arm bracket 5 and the slider 133 can be regarded as an integral body, preventing the arm bracket 5 from sliding relative to the slider 133 in advance. When the slider 133 slides to the inner end side of the lower sliding groove 132, the bottom of the U-shaped elastic pin 141 will contact the pressing cone portion 143, and the U-shaped elastic pin 141 will be pressed downward by the pressing cone portion 143. The downward movement of the U-shaped elastic pin 141 reduces the pressing force of the pressing body 144 on the friction strip 134. Since the frictional force between the slider 133 and the friction strip 134 decreases, at this time, the arm bracket 5 can slide relative to the slider 133 again, adjusting the front and rear positions of the arm bracket 5 so that the arm bracket 5 can adapt to the patient's arm.

[0034] Embodiment 2: A fixed arm infusion support with adjustable arm position in this embodiment will be described centering on the differences from those in Embodiment 1.

[0035] In this embodiment, an anti-disengagement retaining platform is further provided between the vertical guide sleeve 311 and the sliding sleeve 142. The sliding sleeve 142 is vertically slidably sleeved in the vertical guide sleeve 311, and the anti-disengagement retaining platform is provided on the inner wall of the vertical guide sleeve 311 to prevent the sliding sleeve 142 from disengaging from the vertical guide sleeve 311.

[0036] Embodiment 3: A fixed arm infusion support with adjustable arm position in this embodiment will be described centering on the differences from those in Embodiment 1.

[0037] In this embodiment, the infusion stand connecting portion 11 is provided at the rear end of the base 2, and the infusion stand connecting portion 11 has a U-shaped structure. The infusion stand 12 can be sleeved in the infusion stand connecting portion 11 and is constrained and locked by the bolt of the infusion stand connecting portion 11 to prevent the infusion stand 12 from moving.

[0038] The above are only the preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adjustable arm position arm infusion fixing bracket, characterized in that, It includes a base, an adjusting frame, an arm bracket, a rigid adjusting unit and a flexible adjusting unit. There is an infusion rack connecting part on the base. The adjusting frame consists of a lifting component and a horizontal rotation component. The lifting component includes a vertical guide sleeve arranged on the side of the base. A vertical linear cylinder is arranged inside the vertical guide sleeve. The output end of the vertical linear cylinder is connected with a sliding conduit inside the vertical guide sleeve. The horizontal rotation component includes a horizontal rotation cylinder arranged on the top of the sliding conduit. The output end of the horizontal rotation cylinder is connected with a seat plate, and the arm bracket is sleeved and connected with the seat plate. The vertical linear cylinder and the horizontal rotation cylinder both respectively include a main air path and an auxiliary air path. The auxiliary air path is arranged in parallel with the main air path, and the main air paths are respectively connected with the corresponding vertical linear cylinder and horizontal rotation cylinder. The rigid adjusting unit includes main valves respectively used for opening and closing the main air paths of the vertical linear cylinder and the horizontal rotation cylinder. The flexible adjusting unit includes auxiliary valves respectively used for opening and closing the auxiliary air paths of the vertical linear cylinder and the horizontal rotation cylinder. The auxiliary valves are also connected with auxiliary cylinders. Balance springs are arranged on both sides of the piston inside the auxiliary cylinders. When both the main valve and the auxiliary valve are in the open state, the position of the arm can be freely adjusted rigidly. When the main valve is closed, the position of the arm can be further adjusted flexibly. When the auxiliary valve is closed, the position of the arm can be completely locked.

2. The adjustable arm position arm infusion fixing bracket according to claim 1, wherein, It further includes an assisting unit. The assisting unit includes a pressure sensor and a micro air pump. The micro air pump is arranged in the main air path of the vertical linear cylinder. The pressure sensor is arranged inside the fixing strap of the arm bracket, and the pressure sensor is in signal connection with the controller.

3. The adjustable arm position arm infusion fixing bracket according to claim 1, characterized in that, The auxiliary cylinders are respectively connected with the main air paths of the corresponding vertical linear cylinder and horizontal rotation cylinder through the auxiliary valves.

4. The adjustable arm position arm infusion fixing bracket according to claim 1, characterized in that, It further includes a sliding mechanism arranged between the arm bracket and the seat plate. The sliding mechanism includes an upper sliding groove arranged at the bottom of the arm bracket and a lower sliding groove arranged at the top of the seat plate. A slider is sleeved between the upper sliding groove and the lower sliding groove. A friction strip is arranged at the top inside the upper sliding groove. Buffer springs are also installed at both ends inside the upper sliding groove.

5. The adjustable arm position arm infusion fixing bracket according to claim 1, characterized in that, The base includes a base plate, a vertical plate, a short hinge plate, an elastic ring belt and a hook rod. The vertical plate and the short hinge plate are respectively arranged at both ends of the two sides of the base plate. The elastic ring belt is arranged above the base plate. The elastic ring belt can constraint and press the short hinge plate, and the end of the elastic ring belt can be connected with the hook rod inside the vertical plate.

6. The adjustable arm position arm infusion fixing bracket according to claim 1, wherein, An anti - detachment retaining platform is also arranged between the vertical guide sleeve and the sliding conduit.

7. An adjustable arm position arm infusion fixing bracket according to claim 1, characterized in that, It further includes an adaptive mechanism arranged at the end of the slider for increasing the friction force between the slider and the friction strip.

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