Artery blood sampling fixing brace

Abstract

The artery blood sampling fixing brace comprises a mounting base, the top face of the mounting base sequentially passes through a height adjusting assembly, a supporting plate, a supporting soft cushion, push plates arranged at intervals, a fixing plate adjusting mechanism and a U-shaped plate upwards, and the fixing plate adjusting mechanism is located at the end, close to a bottom plate, in the U-shaped plate; a sampling area is arranged at one end of the top surface of the supporting cushion; one end of any push plate is connected with the fixing plate soft cushion through the extension rod and the side fixing plate in sequence, and the other end of any push plate is connected with the fixing plate adjusting mechanism; a pressing plate is arranged between the two side fixing plates, the two side fixing plates are connected with the pressing plate through pressing plate adjusting mechanisms respectively, and a pressing plate cushion is arranged on the bottom face of the pressing plate. The fixing plate adjusting mechanism is adopted to drive the two side fixing plates to clamp and fix the arm of a patient, meanwhile, the pressing plate adjusting mechanism drives the pressing plate soft cushion to move downwards and abut against the upper portion of the arm of the patient, and through the fixing effect of the side fixing plates and the pressing plate, movement of the arm caused by pain is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fixing braces, and in particular to an arterial blood sampling fixing brace. Background Art

[0002] The main purpose of arterial blood sampling is to conduct blood gas analysis, which is often used for monitoring respiratory failure and acid-base imbalance, so that doctors can understand the patient's current condition at a glance and make relevant treatments in time. It can also guide the adjustment of mechanical ventilation parameters for efficacy analysis and prognosis judgment.

[0003] Currently, blood samples are mainly collected through the radial artery. During blood collection, the patient's arm is placed on the table, and then the medical staff inserts the blood collection needle into the patient's radial artery to collect blood samples. Since the pain of radial artery blood collection is relatively obvious, some patients with good cooperation can successfully complete the blood sample collection. However, there are the following technical defects: the patient's arm moves randomly due to pain, causing the needle to scratch the radial artery, which can easily lead to blood collection failure and pose a safety hazard.

[0004] Therefore, how to design an arterial blood sampling fixation brace has become an urgent problem to be solved. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides an arterial blood sampling fixation brace to solve at least one of the above technical problems.

[0006] The technical scheme of the present invention is: an arterial blood sampling fixed brace, comprising a mounting base, the top surface of the mounting base is sequentially passed through a height adjustment component, a support plate, a support cushion, a push plate arranged at intervals, a fixed plate adjustment mechanism, and a U-shaped plate, the U-shaped plate opening is arranged downward, the two open ends of the U-shaped plate are located on both sides of the support plate, and the fixed plate adjustment mechanism is located in the U-shaped plate near one end of the bottom plate; a sampling area is arranged at one end of the top surface of the support cushion, and the sampling area corresponds to the radial artery of the patient; one end of any push plate is connected to the fixed plate cushion through an extension rod and a side fixed plate in sequence, and the other end of any push plate is connected to the fixed plate adjustment mechanism; a pressing plate is arranged between the two side fixed plates, and the two side fixed plates are respectively connected to the pressing plate through the pressing plate adjustment mechanism, and a pressing plate cushion is arranged on the bottom surface of the pressing plate; the fixed plate adjustment mechanism drives the two side fixed plates to approach each other to clamp and fix the patient's arm, and when the two side fixed plates approach each other, the pressing plate adjustment mechanism drives the pressing plate cushion to move downward and against the top of the patient's arm, and the two fixed plate cushions and the pressing plate cushion are directly in contact with the patient's arm.

[0007] The present invention adopts a mounting base to mount the device at a suitable position, and then the patient to be blood drawn sits upright on the chair, and the height of the support plate is adjusted according to the patient's height through a height adjustment component, so that the patient's arm is placed on the upper surface of the support cushion, so that the patient's arm is roughly kept in a horizontal state, and then the patient's radial artery is located in the area above the sampling area; before blood drawing, a set of side fixing plates are driven to approach each other by a fixing plate adjustment mechanism to clamp and fix the patient's arm, and while a set of side fixing plates are approaching each other, the pressing plate adjustment mechanism can drive the pressing plate cushion to move downward and rest against the top of the patient's arm, and the fixing plate cushion and the pressing plate cushion are in direct contact with the patient's arm, which can reduce the pain caused by the fixation to the patient, and the fixing effect of the side fixing plates and the pressing plate during blood drawing can avoid the movement of the arm due to pain, thereby ensuring that arterial blood drawing is carried out safely and smoothly, and solving the technical defects in the prior art that the patient's arm moves randomly due to pain, causing the needle to scratch the radial artery, which can easily lead to blood drawing failure and safety hazards.

[0008] Preferably, the height adjustment assembly includes a symmetrically arranged adjustment assembly, and any one of the adjustment assemblies includes support blocks No. 1 and No. 3 that are slidably mounted on the bottom of the support plate, and support blocks No. 2 and No. 4 that are arranged above the mounting base; support blocks No. 1 and No. 2 are respectively located at the two ends of top rod No. 1, support blocks No. 3 and No. 4 are respectively located at the two ends of top rod No. 2, and the middle part of top rod No. 2 is hinged to the middle part of top rod No. 1.

[0009] The present invention adopts a symmetrically arranged adjustment assembly. The No. 4 support blocks of the two adjustment assemblies move in the same direction to drive the two No. 2 push rods to rotate. The rotation of the two No. 2 push rods will drive the two No. 1 push rods to rotate. At this time, the No. 1 support block and the No. 3 support block will slide at the bottom of the support plate, and the support plate will be lifted up by the No. 1 push rod and the No. 2 push rod, thereby adjusting the height of the support plate to adapt to the collection of blood samples from people of different heights.

[0010] Preferably, the fixed plate adjustment mechanism includes two horizontally placed U-shaped brackets, one end of any one of the U-shaped brackets is opened and fixedly mounted on the push plate, the other end of any one of the U-shaped brackets is hinged to the No. 1 connecting rod, the two No. 1 connecting rods are respectively hinged to the two ends of the rotating rod, and the rotating rods are located below the bottom plate of the U-shaped plate.

[0011] The present invention adopts a clockwise rotating rotating rod, the rotation of which drives the No. 1 connecting rod to rotate, the rotation of which pulls the push plate to move through the U-shaped bracket, and through the connecting action of the extension rod, the movement of the push plate drives the side fixing plate to move, and the two side fixing plates are brought close to each other to clamp and fix the patient's arm, thereby limiting the range of movement of the patient's arm.

[0012] Preferably, the pressure plate adjustment mechanism includes connecting blocks arranged at intervals, and the two connecting blocks are respectively located at the two ends of the pressure plate, and any connecting block is connected to the L-shaped bracket through a No. 2 connecting rod, and the vertical plate ends of the two L-shaped brackets are respectively connected to the top surfaces of the corresponding side fixed plates, and the horizontal plate ends of the two L-shaped brackets are respectively hinged to the corresponding No. 2 connecting rod.

[0013] The present invention uses two side fixing plates to move closer to each other, while driving two L-shaped brackets to move closer to each other. The two L-shaped brackets moving closer to each other will drive two No. 2 connecting rods to rotate. The rotation of the two No. 2 connecting rods will drive the connecting block to move downward. The downward movement of the two connecting blocks will drive the pressure plate cushion to move downward and against the top of the patient's arm, thereby limiting the range of motion of the patient's arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the present invention.

[0015] Figure 2 for Figure 1 A partial enlarged view of .

[0016] Figure 3 It is a schematic diagram of the installation structure of the height adjustment component of the present invention.

[0017] Figure 4 It is a schematic diagram of the installation structure of the fixing plate adjustment mechanism of the present invention.

[0018] Figure 5 for Figure 4 A partial enlarged view of B.

[0019] Figure 6 It is a schematic diagram of the installation structure of the U-shaped plate and the fixed plate adjustment mechanism of the present invention.

[0020] In the figure: 1. Mounting base; 2. Height adjustment assembly; 3. Support plate; 4. Support cushion; 5. Sampling area; 6. Push plate; 7. Extension rod; 8. Side fixing plate; 9. Fixing plate cushion; 10. U-shaped plate; 11. Fixing plate adjustment mechanism; 12. Pressing plate; 13. Pressing plate cushion; 14. Pressing plate adjustment mechanism; 15. Guide groove; 16. No. 1 guide slider; 17. No. 2 guide slider; 21. No. 1 support block; 22. No. 1 push rod; 23. No. 2 support block; 24. No. 3 support block; 25. .No. 2 push rod; 26. No. 4 support block; 27. Guide rail; 28. Roller mechanism; 29. ​​Integrated connector; 111. U-shaped bracket; 112. No. 1 connecting rod; 113. Rotating rod; 114. Rotating shaft; 115. Ratchet; 116. Pawl; 117. Rotating shaft knob; 118. Torsion spring; 119. Lightweight hole; 141. Connecting block; 142. No. 2 connecting rod; 143. L-shaped bracket; 210. Adjusting screw; 211. No. 5 support block; 212. Limiting ring; 213. Screw knob. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] See also Figure 1-6 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0023] Embodiment 1: An arterial blood sampling fixation brace, referring to Figure 1, including a mounting base 1, the top surface of the mounting base 1 is sequentially upwardly passed through a height adjustment component 2, a support plate 3, a support cushion 4, a push plate 6 arranged at intervals, a fixed plate adjustment mechanism 11, and a U-shaped plate 10, the U-shaped plate 10 is arranged with an opening downward, the two open ends of the U-shaped plate 10 are located on both sides of the support plate 3, and the fixed plate adjustment mechanism 11 is located in the U-shaped plate 10 near one end of the bottom plate; a sampling area 5 is provided at one end of the top surface of the support cushion 4, the patient's arm is placed on the upper surface of the support cushion 4, and the sampling area 5 corresponds to the patient's radial artery; one end of any push plate 6 is sequentially passed through an extension rod 7, a side fixing plate 8 is connected to the fixed plate cushion 9, and the other end of any push plate 6 is connected to the fixed plate adjusting mechanism 11; a pressing plate 12 is arranged between the two side fixed plates 8, and the two side fixed plates 8 are respectively connected to the pressing plate 12 through the pressing plate adjusting mechanism 14, and the bottom surface of the pressing plate 12 is provided with a pressing plate cushion 13; the fixed plate adjusting mechanism 11 drives the two side fixed plates 8 to approach each other to clamp and fix the patient's arm, and when the two side fixed plates 8 approach each other, the pressing plate adjusting mechanism 14 drives the pressing plate cushion 13 to move downward and against the top of the patient's arm, and the two fixed plate cushions 9 and the pressing plate cushion 13 are in direct contact with the patient's arm. The present invention adopts a mounting base to mount the device at a suitable position, and then the patient to be blood drawn sits upright on the chair, and the height of the support plate is adjusted according to the patient's height through a height adjustment component, so that the patient's arm is placed on the upper surface of the support cushion, so that the patient's arm is roughly kept in a horizontal state, and then the patient's radial artery is located in the area above the sampling area; before blood drawing, a set of side fixing plates are driven to approach each other by a fixing plate adjustment mechanism to clamp and fix the patient's arm, and while a set of side fixing plates are approaching each other, the pressing plate adjustment mechanism can drive the pressing plate cushion to move downward and rest against the top of the patient's arm, and the fixing plate cushion and the pressing plate cushion are in direct contact with the patient's arm, which can reduce the pain caused by the fixation to the patient, and the fixing effect of the side fixing plates and the pressing plate during blood drawing can avoid the movement of the arm due to pain, thereby ensuring that arterial blood drawing is carried out safely and smoothly, and solving the technical defects in the prior art that the patient's arm moves randomly due to pain, causing the needle to scratch the radial artery, which can easily lead to blood drawing failure and safety hazards.

[0024] Embodiment 2: Based on Embodiment 1, refer to Figure 3The height adjustment component 2 includes a symmetrically arranged adjustment assembly, and any one of the adjustment assemblies includes a No. 1 support block 21 and a No. 3 support block 24 slidably mounted on the bottom of the support plate 3, and a No. 2 support block 23 and a No. 4 support block 26 arranged above the mounting base 1; the No. 1 support block 21 and the No. 2 support block 23 are respectively located at the two ends of the No. 1 push rod 22, and the No. 3 support block 24 and the No. 4 support block 26 are respectively located at the two ends of the No. 2 push rod 25, and the middle part of the No. 2 push rod 25 is hinged to the middle part of the No. 1 push rod 22. The present invention adopts a symmetrically arranged adjustment assembly, and the No. 4 support blocks of the two adjustment assemblies move in the same direction to drive the two No. 2 push rods to rotate, and the rotation of the two No. 2 push rods will drive the two No. 1 push rods to rotate. At this time, the No. 1 support block and the No. 3 support block will slide at the bottom of the support plate, and the support plate will be pushed up by the No. 1 push rod and the No. 2 push rod, thereby adjusting the height of the support plate to adapt to the collection of blood samples from people of different heights.

[0025] Embodiment 3: Based on Embodiment 2, refer to Figure 2 The upper surface of the mounting base 1 is fixedly mounted with symmetrically arranged guide rails 27. The bottom of the No. 2 support block 23 and the bottom of the No. 4 support block 26 of any adjustment assembly slide in the corresponding guide rails 27 through the roller mechanism 28 respectively. An integrated connecting piece 29 is arranged between the two No. 2 support blocks 23. An adjusting screw rod 210 is arranged in the middle of the integrated connecting piece 29. The adjusting screw rod 210 is arranged parallel to the guide rail 27. The present invention adopts a rotating adjusting screw rod, and the rotation of the adjusting screw rod will drive the integrated connecting piece to move along the axial direction of the adjusting screw rod, and the movement of the integrated connecting piece will drive the two No. 2 support blocks to move in the same direction, and the two No. 2 support blocks can drive the No. 1 push rod and the No. 2 push rod to rotate, and the rotation of the two No. 2 push rods will drive the two No. 4 support blocks to move in the same direction, and then drive the roller mechanism to slide in the guide rail, and at the same time, the roller of the roller mechanism will roll on the upper surface of the mounting base. When the height adjustment of the support plate is completed, the height of the support plate can be locked according to the self-locking property of the thread. It should be noted that the roller mechanism is an existing mechanism, and waist-shaped holes are provided on the vertical surfaces on both sides of the guide rail, and the roller shaft of the roller mechanism is located in the waist-shaped holes. The specific structure is not shown here.

[0026] Embodiment 4: Based on Embodiment 3, refer to Figure 2 , Figure 3The upper surface of the mounting base 1 is provided with No. 5 support blocks 211 arranged at intervals, and both ends of the adjusting screw 210 are installed in the No. 5 support blocks 211. The adjusting screw 210 is fixedly sleeved with spaced limit rings 212, and the two limit rings 212 are respectively distributed on both sides of the two No. 5 support blocks 211. One end of the adjusting screw 210 is exposed from the mounting base 1 and connected to the screw knob 213. The present invention uses two No. 5 support blocks to provide stable support for the adjusting screw, and the limit rings distributed on both sides of the two No. 5 support blocks can limit the movement of the adjusting screw, so that the adjusting screw can only rotate in the No. 5 support block, and cannot move in the No. 5 support block. The rotation of the screw knob can drive the adjusting screw to rotate.

[0027] Example 5: Based on Example 1, refer to Figure 4 , Figure 6 The fixing plate adjustment mechanism 11 includes two horizontally placed U-shaped brackets 111, one end of any U-shaped bracket 111 is opened and fixedly mounted on the push plate 6, and the other end of any U-shaped bracket 111 is hinged to the No. 1 connecting rod 112, and the two No. 1 connecting rods 112 are respectively hinged to the two ends of the rotating rod 113, and the rotating rod 113 is located below the bottom plate of the U-shaped plate 10. The present invention adopts clockwise rotation of the rotating rod, and the rotation of the rotating rod will drive the No. 1 connecting rod to rotate, and the rotation of the No. 1 connecting rod will pull the push plate to move through the U-shaped bracket. Through the connection of the extension rod, the movement of the push plate will drive the side fixing plate to move, and the two side fixing plates are close to each other to clamp and fix the patient's arm, and limit the range of motion of the patient's arm.

[0028] Embodiment 6. On the basis of embodiment 5, a rotating shaft 114 is provided on the bottom plate of the U-shaped plate 10, and the bottom end of the rotating shaft 114 is connected to the rotating rod 113, and the end of the rotating shaft 114 exposed from the U-shaped plate 10 is provided with a fixed sleeve ratchet 115 and a rotating shaft knob 117 in sequence upward, and a fixing column is also provided on the bottom plate of the U-shaped plate 10, and a pawl 116 is provided on the fixing column, and the pawl 116 can rotate around the fixing column, and the pawl 116 can cooperate with the ratchet 115; a torsion spring 118 is also provided on the end of the bottom plate of the U-shaped plate 10 away from the opening, and the other end of the torsion spring 118 is connected to the pawl 116. The present invention adopts a clockwise rotating shaft, and the clockwise rotation of the shaft will drive the ratchet to rotate clockwise. The clockwise rotation of the ratchet is not affected by the pawl, and under the action of the torsion spring, the pawl will be driven to intermittently engage in the tooth gap of the ratchet. The rotation of the shaft will drive the rotating rod to rotate at the same time, and the rotation of the rotating rod will drive the side fixing plate to clamp and fix the patient's arm. When the ratchet rotates counterclockwise, the pawl will be engaged in the tooth gap of the ratchet, thereby locking the position of the fixed rear fixing plate; the operator can turn the shaft knob clockwise to drive the shaft to rotate clockwise.

[0029] Embodiment 7: Based on Embodiment 6, a lightweight hole 119 is provided in the middle of the push plate 6, and the lightweight hole 119 is a rectangular through hole. The present invention adopts a lightweight hole provided in the middle of the push plate, and the weight of the push plate can be reduced and materials can be saved by setting the lightweight hole.

[0030] Embodiment 8: Based on Embodiment 1, Figure 5 The pressure plate adjustment mechanism 14 includes connection blocks 141 arranged at intervals, and two connection blocks 141 are respectively located at the two ends of the pressure plate 12, and any connection block 141 is connected to an L-shaped bracket 143 through a No. 2 connecting rod 142, and the vertical plate ends of the two L-shaped brackets 143 are respectively connected to the top surface of the corresponding side fixing plate 8, and the horizontal plate ends of the two L-shaped brackets 143 are respectively hinged to the corresponding No. 2 connecting rod 142. The present invention uses two side fixing plates to approach each other while driving the two L-shaped brackets to approach each other. The approach of the two L-shaped brackets will drive the two No. 2 connecting rods to rotate, and the rotation of the two No. 2 connecting rods will drive the connection blocks to move downward, and the downward movement of the two connection blocks will drive the pressure plate cushion to move downward and press against the top of the patient's arm, thereby limiting the range of motion of the patient's arm.

[0031] Embodiment 9: Based on Embodiment 1, Figure 3 , Figure 4 The support plate 3 and the support cushion 4 are provided with a guide groove 15, in which a first guide slider 16 and a second guide slider 17 arranged at intervals are slidably installed, and two first guide sliders 16 are respectively fixedly installed at the bottom of the two side fixing plates 8, and two second guide sliders 17 are respectively fixedly installed at the bottom of the two push plates 6. The present invention uses two first guide sliders to slide in the guide groove to guide the two side fixing plates to move closer to each other, and two second guide sliders to slide in the guide groove to guide the two push plates to move closer to each other.

[0032] The working principle of the present invention is as follows: when in use, the device is installed in a suitable position through the installation base 1, and the patient to be blood-drawn is allowed to sit upright on the chair, and then the height of the support plate 3 is adjusted according to the patient's height, and the screw knob 213 is turned. The rotation of the screw knob 213 will drive the adjusting screw 210 to rotate, and the rotation of the adjusting screw 210 will drive the integrated connecting piece 29 to move along the axial direction of the adjusting screw 210, and the movement of the integrated connecting piece 29 will drive a group of No. 2 support blocks 23 to move forward, and the forward movement of a group of No. 2 support blocks 23 can drive the No. 1 push rod 22 and the No. 2 push rod 25 to rotate, and the rotation of a group of No. 2 push rod 25 will drive a group of No. 4 support blocks 26 to move forward, which can bring The movable roller mechanism 28 slides in the guide rail 27, and the roller in the roller mechanism 28 rolls on the upper surface of the mounting base 1. At this time, the support plate 3 is lifted up by the No. 1 push rod 22 and the No. 2 push rod 25, and the height of the support plate 3 is adjusted; the patient's arm is placed on the upper surface of the support cushion 4, the arm is roughly kept in a horizontal state, and the patient's radial artery is located in the area above the sampling area 5; before blood collection, the patient's arm is clamped and fixed, and the shaft knob 117 can be turned clockwise at this time. The clockwise rotation of the shaft knob 117 will drive the shaft 114 to rotate clockwise, and the clockwise rotation of the shaft 114 will drive the ratchet 115 to rotate clockwise, and the ratchet 11 The clockwise rotation is not affected by the pawl 116, and the pawl 116 is intermittently engaged in the tooth gap of the ratchet 115 under the action of the torsion spring 118. The rotation of the rotating shaft 114 drives the rotating rod 113 to rotate, and the rotation of the rotating rod 113 drives the No. 1 connecting rod 112 to rotate. The rotation of the No. 1 connecting rod 112 pulls the push plate 6 to move through the U-shaped bracket 111. Through the connection of the extension rod 7, the movement of the push plate 6 drives the side fixing plate 8 to move. A group of side fixing plates 8 are close to each other to clamp and fix the patient's arm. When the ratchet 115 rotates counterclockwise, the pawl 116 is engaged in the tooth gap of the ratchet 115, and the position of the fixed rear side fixing plate 8 can be locked. , to ensure the stability of the patient's arm fixation, a group of side fixing plates 8 approaching each other will drive a group of L-shaped brackets 143 approaching each other, a group of L-shaped brackets 143 approaching each other will drive a group of No. 2 connecting rods 142 to rotate, and a group of No. 2 connecting rods 142 rotating will drive the connecting block 141 to move downward, and the downward movement of the connecting block 141 will drive the pressure plate cushion 13 to move downward and against the top of the patient's arm. The fixing plate cushion 9 and the pressure plate cushion 13 are in direct contact with the patient's arm, which can reduce the pain caused by fixation to the patient. During blood collection, the fixing effect of the side fixing plates 8 and the pressure plate 12 can avoid arm activities caused by pain, ensuring that arterial blood collection is safe and smooth.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An arterial blood sampling fixation brace, comprising a mounting base (1), characterized in that: The top surface of the mounting base (1) is passed through a height adjustment assembly (2), a support plate (3), a support cushion (4), a push plate (6) arranged at intervals, a fixed plate adjustment mechanism (11), and a U-shaped plate (10) in sequence. The U-shaped plate (10) is arranged with its opening facing downward, and the two open ends of the U-shaped plate (10) are located on both sides of the support plate (3). The fixed plate adjustment mechanism (11) is located inside the U-shaped plate (10) near one end of the bottom plate. A sampling area (5) is provided at one end of the top surface of the support cushion (4), and the sampling area (5) corresponds to the radial artery of the patient. One end of any push plate (6) is connected to the fixed plate cushion (9) in sequence through an extension rod (7) and a side fixing plate (8). The other end of any push plate (6) is connected to the fixed plate adjustment mechanism (11); a pressing plate (12) is arranged between the two side fixed plates (8); the two side fixed plates (8) are respectively connected to the pressing plate (12) through the pressing plate adjustment mechanism (14); a pressing plate cushion (13) is arranged on the bottom surface of the pressing plate (12); the fixed plate adjustment mechanism (11) drives the two side fixed plates (8) to move closer to each other to clamp and fix the patient's arm; when the two side fixed plates (8) move closer to each other, the pressing plate adjustment mechanism (14) drives the pressing plate cushion (13) to move downward and abut against the top of the patient's arm, and the two fixed plate cushions (9) and the pressing plate cushion (13) are in direct contact with the patient's arm.

2. The arterial blood sampling fixation brace according to claim 1, characterized in that: The height adjustment assembly (2) comprises symmetrically arranged adjustment assemblies, any one of which comprises a No. 1 support block (21) and a No. 3 support block (24) slidably mounted on the bottom of the support plate (3), and a No. 2 support block (23) and a No. 4 support block (26) arranged above the mounting base (1); the No. 1 support block (21) and the No. 2 support block (23) are respectively located at the two ends of the No. 1 top rod (22), the No. 3 support block (24) and the No. 4 support block (26) are respectively located at the two ends of the No. 2 top rod (25), and the middle portion of the No. 2 top rod (25) is hinged to the middle portion of the No. 1 top rod (22).

3. The arterial blood sampling fixation brace according to claim 2, characterized in that: The upper surface of the mounting base (1) is fixedly mounted with symmetrically arranged guide rails (27); the bottom of the No. 2 support block (23) and the bottom of the No. 4 support block (26) of any one of the adjustment assemblies slide in the corresponding guide rails (27) via roller mechanisms (28); an integrated connector (29) is arranged between the two No. 2 support blocks (23); an adjusting screw rod (210) is arranged in the middle of the integrated connector (29); and the adjusting screw rod (210) is arranged in parallel with the guide rails (27).

4. The arterial blood sampling fixation brace according to claim 3, characterized in that: The upper surface of the mounting base (1) is provided with No. 5 support blocks (211) arranged at intervals, and both ends of the adjusting screw rod (210) are mounted in the No. 5 support blocks (211). The adjusting screw rod (210) is fixedly sleeved with spaced-apart limiting rings (212), and the two limiting rings (212) are respectively distributed on both sides of the two No. 5 support blocks (211). One end of the adjusting screw rod (210) is exposed from the mounting base (1) and connected to a screw rod knob (213).

5. The arterial blood sampling fixation brace according to claim 1, characterized in that: The fixed plate adjustment mechanism (11) comprises two transversely placed U-shaped brackets (111), one end of each U-shaped bracket (111) is opened and fixedly mounted on the push plate (6), the other end of each U-shaped bracket (111) is hinged to a No. 1 connecting rod (112), the two No. 1 connecting rods (112) are respectively hinged to the two ends of a rotating rod (113), and the rotating rods (113) are both located below the bottom plate of the U-shaped plate (10).

6. The arterial blood sampling fixation brace according to claim 5, characterized in that: A rotating shaft (114) is arranged on the bottom plate of the U-shaped plate (10), the bottom end of the rotating shaft (114) is connected to the rotating rod (113), and an end of the rotating shaft (114) exposed from the U-shaped plate (10) is upwardly provided with a ratchet (115) and a rotating shaft knob (117) which are fixedly sleeved, and a fixing column is also arranged on the bottom plate of the U-shaped plate (10), and a ratchet (116) is arranged on the fixing column, and the ratchet (116) can rotate around the fixing column, and the ratchet (116) can cooperate with the ratchet (115).

7. The arterial blood sampling fixation brace according to claim 6, characterized in that: A torsion spring (118) is also provided on the end of the bottom plate of the U-shaped plate (10) away from the opening, and the other end of the torsion spring (118) is connected to the pawl (116).

8. The arterial blood sampling fixation brace according to claim 6, characterized in that: A lightweight hole (119) is provided in the middle of the push plate (6), and the lightweight hole (119) is a rectangular through hole.

9. The arterial blood sampling fixation brace according to claim 1, characterized in that: The pressure plate adjustment mechanism (14) comprises connection blocks (141) arranged at intervals, wherein the two connection blocks (141) are respectively located at the two ends of the pressure plate (12), and any one of the connection blocks (141) is connected to an L-shaped bracket (143) via a No. 2 connecting rod (142), and the vertical plate ends of the two L-shaped brackets (143) are respectively connected to the top surfaces of the corresponding side fixing plates (8), and the horizontal plate ends of the two L-shaped brackets (143) are respectively hinged to the corresponding No. 2 connecting rod (142).

10. The arterial blood sampling fixation brace according to claim 1, characterized in that: The support plate (3) and the support cushion (4) are provided with a guide groove (15) in common. A first guide slider (16) and a second guide slider (17) arranged at a distance are slidably mounted in the guide groove (15). The two first guide sliders (16) are respectively fixedly mounted on the bottoms of the two side fixing plates (8), and the two second guide sliders (17) are respectively fixedly mounted on the bottoms of the two push plates (6).

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