A clinical anti-slip type automatic tightening and loosening tourniquet

Abstract

This invention relates to the field of compression band technology and discloses a clinical anti-slip type automatic tightening and loosening compression band, including a fixing base. A collar is fixedly mounted on the top of the fixing base. An auxiliary plate is fixedly mounted on the inner wall of the collar. An air bladder is fixedly mounted on the side of the auxiliary plate, and the outer edge of the air bladder is fixedly mounted to the inner wall of the collar. A flexible pressure-sensing membrane is fixedly mounted on the inner wall of the air bladder. Large protrusions are fixedly mounted on the inner walls of the flexible pressure-sensing membrane near both sides, and small protrusions are fixedly mounted on the inner wall of the flexible pressure-sensing membrane near the center. A cylinder is fixedly mounted on the inner wall of the fixing base. An auxiliary frame is fixedly mounted on the output end of the cylinder. An auxiliary block is slidably connected to the inner wall of the auxiliary frame. This integrated band combines blood pressure measurement and intravenous infusion functions. Mode switching does not require equipment replacement, simplifying the operation process, improving clinical work efficiency, and is suitable for use in emergency rooms, health check centers, and other scenarios.

Description

Technical Field

[0001] This invention relates to the field of compression band technology, specifically a clinical anti-slip type automatic tightening and loosening compression band. Background Technology

[0002] In clinical blood pressure measurement and intravenous infusion procedures, the tourniquet serves as a core auxiliary tool, and its performance directly affects operational efficiency and patient experience.

[0003] There are three major pain points in the current clinical use of tourniquets: First, it has limited functionality and is cumbersome to switch between. Blood pressure measurement and intravenous infusion require different pressure cuff devices. Switching between them requires readjusting the patient's position, making the operation process lengthy and the clinical work efficiency low. It is particularly limited in fast-paced scenarios such as emergency rooms. Secondly, the automatic tension adjustment is lacking, and it relies heavily on manual binding or overall inflation, making it difficult to accurately control the pressure according to different arm shapes, which can easily lead to excessive compression (causing patient pain and local tissue damage) or insufficient compression. Third, the anti-slip effect is weak. The inner wall of traditional pressure bands is smooth or only has simple added texture. The arm is easy to move during measurement or puncture, which not only affects the accuracy of blood pressure measurement, but also increases the risk of venipuncture failure. Fourth, the existing tourniquet lacks a coordinated design with the angiography device, and the imaging effect and tourniquet pressure cannot be dynamically matched during venipuncture, further reducing the success rate of puncture. Summary of the Invention

[0004] This invention provides a clinical anti-slip type automatic tightening and loosening tourniquet to solve the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a clinical anti-slip type automatic tensioning and loosening bandage, comprising a fixing base, a collar fixedly mounted on the top of the fixing base, an auxiliary plate fixedly mounted on the inner wall of the collar, an air bladder fixedly mounted on the side of the auxiliary plate, and the outer edge of the air bladder fixedly mounted to the inner wall of the collar, a flexible pressure-sensing membrane fixedly mounted on the inner wall of the air bladder, large protrusions fixedly mounted on the inner walls of the flexible pressure-sensing membrane near both sides, and small protrusions fixedly mounted on the inner wall of the flexible pressure-sensing membrane near the middle, a cylinder fixedly mounted on the inner wall of the fixing base, an auxiliary frame fixedly mounted on the output end of the cylinder, an auxiliary block slidably connected to the inner wall of the auxiliary frame, a placement plate fixedly mounted on the top of the auxiliary block, an arc-shaped frame fixedly mounted on the side of the collar away from the placement plate, an arc-shaped plate slidably connected to the inner wall of the arc-shaped frame, an adjusting frame fixedly mounted on the side of the arc-shaped plate, a connecting block slidably connected to the inner wall of the adjusting frame, and a blood vessel imaging device fixedly mounted on the side of the connecting block.

[0006] As a preferred embodiment of the present invention, the top of the fixed base is provided with a slot, and the inner wall of the slot near the bottom is provided with a connecting groove. An air pump is fixedly installed on the inner wall of one end of the connecting groove, and an electromagnetic valve exhaust pipe is fixedly installed on the inner wall of the other end of the connecting groove. The inner wall of the electromagnetic valve exhaust pipe and the air outlet of the air pump are both connected to the inner wall of the collar through the inner wall of the connecting groove and the inner wall of the slot.

[0007] As a preferred embodiment of the present invention, a second cylinder is fixedly mounted on the side of the auxiliary frame, the output end of the second cylinder is fixedly mounted on the side of the auxiliary block, and a silicone protrusion is fixedly mounted on the inner wall of the placement plate.

[0008] As a preferred embodiment of the present invention, the inner wall of the small protrusion is fixedly sleeved with micro conductive silicone particles, and the micro conductive silicone particles are electrically connected to the flexible pressure sensing film. The inner wall of the flexible pressure sensing film is fixedly fitted with a blood pressure detection sensor.

[0009] As a preferred embodiment of the present invention, the inner wall of the collar is fixedly sleeved with a solenoid valve connecting pipe, and the inner wall of the collar is connected to the inner wall of the airbag through the inner wall of the solenoid valve connecting pipe. A pressure sensor is fixedly mounted on the inner wall of the collar, and the pressure sensor is electrically connected to the solenoid valve connecting pipe and the air pump.

[0010] As a preferred embodiment of the present invention, rubber strips are fixedly fitted to the top and bottom of the inner wall of the arc-shaped frame, and rubber pads are fixedly fitted to the top and bottom of the arc-shaped plate, with adjacent rubber pads in close contact with the rubber strips.

[0011] As a preferred embodiment of the present invention, a cylinder three is fixedly mounted on the top of the adjusting frame, and the output end of the cylinder three is fixedly mounted on the top of the connecting block.

[0012] As a preferred embodiment of the present invention, an infrared ranging sensor is fixedly mounted on the side of the collar away from the arc-shaped frame. The number of infrared ranging sensors is four, and the four infrared ranging sensors are evenly distributed on one side of the collar.

[0013] As a preferred embodiment of the present invention, a rechargeable battery is fixedly mounted on the inner wall of the mounting base near one side, and a main control module is fixedly mounted on the inner wall of the mounting base near the other side. A control panel is fixedly mounted on the side of the mounting base, and the control panel is electrically connected to both the main control module and the rechargeable battery.

[0014] As a preferred embodiment of the present invention, the flexible pressure-sensing film is electrically connected to the air pump, the solenoid valve exhaust pipe, and the angiography device via the control panel and the main control module; the infrared ranging sensor is electrically connected to cylinder one and cylinder two via the control panel and the main control module; and the blood pressure detection sensor is electrically connected to the control panel.

[0015] The present invention has the following beneficial effects: 1. This clinical anti-slip automatic tightening and loosening cuff integrates blood pressure measurement and intravenous infusion functions. Mode switching does not require equipment replacement, simplifying the operation process, improving clinical work efficiency, and is suitable for use in multiple scenarios such as emergency rooms and physical examination centers.

[0016] 2. This clinical anti-slip automatic tensioning band achieves precise automatic tension adjustment through six-balloon zone pressure control, conductive silicone particle pressure feedback, and graded inflation levels. It reduces the circumferential pressure difference in the arm and reduces blood pressure measurement errors. Compared with traditional equipment, it improves accuracy, is suitable for patients of different body types, and avoids excessive or insufficient compression.

[0017] 3. This clinical anti-slip automatic tightening and loosening band has a double anti-slip structure formed by the large protrusions and the protrusions on the placement plate, which reduces arm slippage and significantly reduces the risk of arm displacement during measurement and puncture, improves the stability of blood pressure measurement data, and thus reduces the failure rate of venous puncture due to displacement.

[0018] 4. This clinical anti-slip automatic tightening and loosening tourniquet improves the clarity of vascular imaging through dynamic adaptation of pressure and light combined with multi-dimensional adjustment of the contrast agent. It increases the success rate of puncture and reduces patient discomfort caused by repeated punctures for patients with thin blood vessels and insufficient filling.

[0019] 5. This clinical anti-slip automatic tightening and loosening bandage reduces skin pressure through large and small bumps, improving patient comfort. The device adopts a damping buffer structure, ensuring stable and noiseless operation, extending the device's lifespan, and reducing clinical operation and maintenance costs. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the orthographic section of the fixing base of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the collar of the present invention; Figure 5 This is a schematic diagram of the airbag structure of the present invention; Figure 6 This is a schematic diagram of the arc-shaped frame cross-section structure of the present invention; Figure 7 This is a cross-sectional view of the infrared ranging sensor of the present invention; Figure 8 This is a cross-sectional plan view of the large protrusion structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a cross-sectional view of the fixing seat of the present invention.

[0021] In the diagram: 1. Fixing base; 2. Collar; 3. Auxiliary plate; 4. Airbag; 5. Large protrusion; 6. Small protrusion; 7. Solenoid valve connecting pipe; 8. Pressure sensor one; 9. Groove; 10. Connecting groove; 11. Air pump; 12. Solenoid valve exhaust pipe; 13. Arc frame; 14. Arc plate; 15. Rubber strip; 16. Rubber pad; 17. Adjusting frame; 18. Cylinder three; 19. Connecting block; 20. Vascular imaging instrument; 21. Cylinder one; 22. Auxiliary frame; 23. Cylinder two; 24. Placement plate; 25. Silicone protrusion; 26. Infrared ranging sensor; 27. Main control module; 28. Rechargeable battery; 29. ​​Control panel; 30. Blood pressure detection sensor; 31. Conductive silicone particles; 32. Flexible pressure sensing film; 33. Auxiliary block. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-10A clinical anti-slip type automatic tensioning and loosening tourniquet includes a fixing base 1, a collar 2 fixedly mounted on the top of the fixing base 1, an auxiliary plate 3 fixedly mounted on the inner wall of the collar 2, an air bladder 4 fixedly mounted on the side of the auxiliary plate 3, and the outer edge of the air bladder 4 fixedly mounted to the inner wall of the collar 2. A flexible pressure sensing diaphragm 32 is fixedly mounted on the inner wall of the air bladder 4, with large protrusions 5 fixedly mounted on the inner walls near the sides and small protrusions 6 fixedly mounted on the inner wall near the center. A cylinder 21 is fixedly mounted on the inner wall of the fixing base 1, and an auxiliary frame 22 is fixedly mounted on the output end of the cylinder 21. An auxiliary block 33 is slidably connected to the inner wall of the auxiliary frame 22. A placement plate 24 is fixedly mounted on the top of the auxiliary block 33. An arc-shaped frame 13 is fixedly mounted on the side of the collar 2 away from the placement plate 24. An arc-shaped plate 14 is slidably connected to the inner wall of the arc-shaped frame 13. An adjustment frame 17 is fixedly mounted on the side of the arc-shaped plate 14. A connecting block 19 is slidably connected to the inner wall of the adjustment frame 17. A vascular imaging instrument 20 is fixedly mounted on the side of the connecting block 19. The collar 2 is set up by using the fixed seat 1 in conjunction with the collar 2. The collar 2 is made of medical-grade PC material, and the inner diameter of the collar 2 can be adapted to children to obese patients. The arm, the outer edge of the airbag 4 and the inner wall of the collar 2 are connected by a heat-sealing process, achieving an airtightness rating of IP67. After inflation, the pressure drop is ≤0.5kPa after 24 hours. A flexible pressure-sensing membrane 32 is bonded to the inner wall of the airbag 4. The flexible pressure-sensing membrane 32 is model FSR406, 0.6mm thick, with a pressure detection range of 0-30kPa and an accuracy of ±0.1kPa. Large protrusions 5 are symmetrically fixed to the inner walls on both sides of the flexible pressure-sensing membrane 32. The diameter of the large protrusions 5 is 8-10mm, the height is 3-4mm, and they are made of medical-grade silicone. Small protrusions 6 are distributed in a matrix pattern in the center. The small protrusions 6 are... The cylinder 21 has a diameter of 4-5mm and a height of 1-3mm. The cylinder model is SC63-60 with a diameter of 63mm, a stroke of 60mm, a working pressure of 0.4-0.7MPa, and a positioning accuracy of ±0.5mm. The angiography instrument 20 has a model of VEINPRO-600, a light source of 660nm red LED array, a light intensity adjustment range of 300-800lux, a imaging depth of 2-6mm, and an image resolution of 640×480. The brightness can be adjusted in conjunction with the pressure signal of the flexible pressure sensing film 32. For every 1kPa increase in pressure, the light intensity increases by 60lux±5lux.

[0024] In a preferred embodiment, the top of the fixed base 1 is provided with a slot 9, and the inner wall of the slot 9 near the bottom is provided with a connecting groove 10. An air pump 11 is fixedly installed on the inner wall of one end of the connecting groove 10, and a solenoid valve exhaust pipe 12 is fixedly installed on the inner wall of the other end of the connecting groove 10. The inner wall of the solenoid valve exhaust pipe 12 and the air outlet of the air pump 11 are connected to the inner wall of the collar 2 through the inner wall of the connecting groove 10 and the inner wall of the slot 9. The air pump 11 is model DC12V-04, rated air pressure 25kPa, flow rate 1.2L / min, and working noise ≤55dB. The solenoid valve exhaust pipe 12 is model 2W-030-10, working voltage 12V, and response time ≤80ms.

[0025] In a preferred embodiment, a second cylinder 23 is fixedly mounted on the side of the auxiliary frame 22, and the output end of the second cylinder 23 is fixedly mounted on the side of the auxiliary block 33. A silicone protrusion 25 is fixedly mounted on the inner wall of the placement plate 24. The second cylinder 23 is model SC40-50, with a cylinder diameter of 40mm, a stroke of 50mm, and a positioning accuracy of ±0.5mm. The silicone protrusion 25 is integrally formed on the inner wall of the placement plate 24, with a static friction coefficient ≥0.6, which effectively prevents the arm from sliding.

[0026] In a preferred embodiment, a micro-conductive silicone particle 31 is fixedly sleeved on the inner wall of the small protrusion 6, and the micro-conductive silicone particle 31 is electrically connected to the flexible pressure sensing film 32. A blood pressure detection sensor 30 is fixedly mounted on the inner wall of the flexible pressure sensing film 32. The particle size of the micro-conductive silicone particle 31 is 0.25 mm, the volume resistivity is 10^-3 Ω·cm, and the particle is electrically connected to the flexible pressure sensing film 32 through electrodes. When pressure is applied, the contact area changes linearly with the pressure. For every 1 kPa increase in pressure, the contact area increases by 18% ± 2%, thereby achieving accurate conversion of pressure signals.

[0027] In a preferred embodiment, a solenoid valve connecting pipe 7 is fixedly sleeved on the inner wall of the collar 2, and the inner wall of the collar 2 is connected to the inner wall of the airbag 4 through the inner wall of the solenoid valve connecting pipe 7. A pressure sensor 8 is fixedly mounted on the inner wall of the collar 2, and the pressure sensor 8 is electrically connected to the solenoid valve connecting pipe 7 and the air pump 11. There are six pressure sensors 8, and the model of the pressure sensor 8 is MPX5050GP, with a measurement range of 0-50kPa and an accuracy of ±0.2kPa. The six pressure sensors 8 are set one-to-one with the six airbags 4 to monitor the internal pressure of each airbag 4 in real time, forming a closed-loop pressure control with the air pump 11 and the solenoid valve to ensure that the circumferential pressure difference of the arm is ≤0.3kPa.

[0028] In a preferred embodiment, rubber strips 15 are fixedly mounted on the top and bottom of the inner wall of the arc-shaped frame 13, and rubber pads 16 are fixedly mounted on the top and bottom of the arc-shaped plate 14. The adjacent rubber pads 16 are in close contact with the rubber strips 15, and the rubber pads 16 and rubber strips 15 are interference-fitted. The contact pressure between the rubber pads 16 and rubber strips 15 is 0.8-1.2N, forming a damping buffer. There is no jamming during sliding adjustment, the noise is ≤40dB, and the positioning angle accuracy is ±1°.

[0029] In a preferred embodiment, a cylinder 18 is fixedly mounted on the top of the adjustment frame 17. The output end of the cylinder 18 is fixedly mounted on the top of the connecting block 19. The cylinder 18 is a model SC32-40 with a cylinder diameter of 32mm, a stroke of 40mm, and a positioning accuracy of ±0.3mm. The cylinder 18 drives the connecting block 19 to slide in the inner wall of the adjustment frame 17, and the arc plate 14 slides in the inner wall of the arc frame 13, thereby assisting the angiography instrument 20 in multi-dimensional adjustment.

[0030] In a preferred embodiment, an infrared ranging sensor 26 is fixedly mounted on the side of the collar 2 away from the arc frame 13. There are four infrared ranging sensors 26, which are evenly distributed on one side of the collar 2. The infrared ranging sensor 26 is model GP2Y0A21YK-F, with a measurement range of 10-100cm, an accuracy of ±0.1mm, a sampling frequency of 50Hz, and a central angle of 90° between adjacent infrared ranging sensors 26. By detecting the distance difference between the arm and the inner wall of the collar 2, the main control module 27 calculates and drives cylinder 1 21 and cylinder 2 23 to adjust in a coordinated manner, so that the deviation between the center of the arm and the center of the collar 2 is ≤0.4mm, and the positioning completion time is ≤2 seconds.

[0031] In a preferred embodiment, a rechargeable battery 28 is fixedly mounted on the inner wall of the mounting base 1 near one side, and a main control module 27 is fixedly mounted on the inner wall of the mounting base 1 near the other side. A control panel 29 is fixedly mounted on the side of the mounting base 1, and the control panel 29 is electrically connected to both the main control module 27 and the rechargeable battery 28. The main control module 27 is an STM32F407VET6 with a main frequency of 168MHz, 16 ADC acquisition channels, and supports multi-module synchronous control. The battery 28 is model LFP12-6, with a capacity of 6Ah, a voltage of 12V, a cycle life of ≥1000 cycles, and can work continuously for 10 hours when fully charged. It supports Type-C fast charging with a charging time of ≤2.5 hours. The control panel 29 is model TFT3.5-480×320, a capacitive touch screen with a response time of ≤5ms. The main control module 27, the control panel 29, and the rechargeable battery 28 are electrically connected in pairs via shielded wires to realize command input, data processing, parameter display, and power supply management.

[0032] In a preferred embodiment, the flexible pressure-sensing film 32 is electrically connected to the air pump 11, the solenoid valve exhaust pipe 12, and the angiography instrument 20 via the control panel 29 and the main control module 27. The infrared ranging sensor 26 is electrically connected to cylinder 1 21 and cylinder 2 23 via the control panel 29 and the main control module 27. The blood pressure sensor 30 is electrically connected to the control panel 29. The pressure signal collected by the flexible pressure-sensing film 32 is processed by the main control module 27, which outputs control commands to the air pump 11 and the solenoid valve exhaust pipe 12 to adjust the pressure of the airbag 4, and simultaneously links the angiography instrument 20 to adjust the brightness. The distance data from the infrared ranging sensor 26 drives cylinder 1 21 and cylinder 2 23 to complete the arm positioning. The blood pressure sensor 30 is model MPX2010DP, with a measurement range of -10 to 10 kPa and an accuracy of ±0.1 kPa. The blood pressure sensor 30 is directly connected to the control panel 29 and displays systolic blood pressure, diastolic blood pressure, and heart rate data in real time, with a measurement error ≤ ±2 mmHg.

[0033] Working principle: Device Start-up and Mode Selection: Press the power button on the control panel 29. The rechargeable battery 28 supplies power to the device. The main control module 27 starts the self-test program, which sequentially tests the working status of the air pump 11, the solenoid valve exhaust pipe 12, the solenoid valve connecting pipe 7, the infrared ranging sensor 26, and the cylinders 1, 21, 23, and 3 18. After the self-test is completed, select the "blood pressure measurement" or "intravenous infusion" mode through the touch screen on the control panel 29, and select the corresponding maximum inflation level of the airbag 4 according to the patient's body size. Arm placement and positioning: The patient places their arm on the silicone protrusion 25 on the top of the placement plate 24 to enhance the arm's anti-slip properties. At the same time, the arm passes through the middle of the collar 2. At this time, the four infrared distance sensors 26 evenly distributed on the collar 2 are activated to collect the distance data between the arm and the inner wall of the collar 2 in real time and transmit the data to the main control module 27. The main control module 27 drives cylinder 1 21 and cylinder 2 23 according to the distance data. Cylinder 1 21 drives the auxiliary frame 22 to rise and fall, and cylinder 2 23 pushes the auxiliary block 33 to slide along the auxiliary frame 22. Finally, the arm is adjusted to the center position of the collar 2. After positioning is completed, the control panel 29 displays "Positioning successful". Blood pressure measurement operation: The main control module 27 controls the air pump 11 to start according to the selected gear. The air pump 11 supplies air to the six air bladders 4 through the connecting groove 10 and the solenoid valve connecting pipe 7. During the expansion of the air bladders 4, the large protrusions 5 on the inner wall of the air bladders, together with the silicone protrusions 25 of the placement plate 24, achieve stable arm positioning. The micro conductive silicone particles 31 in the small protrusions 6 deform with pressure and feed the pressure signal back to the main control module 27 through the flexible pressure sensing film 32. At the same time, the six pressure sensors 8 monitor the pressure of the corresponding air bladders 4. The main control module 27 adjusts the air pump 11 and the solenoid valve exhaust pipe 12 according to the feedback data to stabilize the circumferential pressure difference of the arm within a suitable range. Then, the blood pressure detection sensor 30 on the flexible pressure sensing film 32 collects the brachial artery oscillation wave signal. The main control module 27 calculates the systolic and diastolic blood pressure and displays the results on the control panel 29 within 30 seconds. Intravenous infusion operation: After switching to "intravenous infusion" mode, turn off the infrared ranging sensor 26. Control cylinder 1 21 and cylinder 2 23 through control panel 29 to move the placement plate 24 to the preset puncture position. Medical staff manually push the arc plate 14 to slide along the arc frame 13. The rubber pad 16 of the arc plate 14 and the rubber strip 15 of the arc frame 13 cooperate to achieve damping positioning and adjust the horizontal angle of the angiography instrument 20. At the same time, control cylinder 3 18 to extend and retract, drive the connecting block 19 to slide along the adjustment frame 17 to adjust the height of the angiography instrument 20 so that it is aligned with the puncture area. Then, the air pump 11 supplies air to the air bag 4. The flexible pressure sensing film 32 feeds back pressure data. The main control module 27 adjusts the brightness of the angiography instrument 20 in conjunction. Medical staff perform the puncture operation. After the puncture is completed, control the solenoid valve exhaust pipe 12 through control panel 29 to release the pressure in the air bag 4.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clinical anti-slip type automatic tensioning and loosening tourniquet, comprising a fixing base (1), characterized in that: A collar (2) is fixedly mounted on the top of the fixed base (1). An auxiliary plate (3) is fixedly mounted on the inner wall of the collar (2). An airbag (4) is fixedly mounted on the side of the auxiliary plate (3). The outer edge of the airbag (4) is fixedly mounted to the inner wall of the collar (2). A flexible pressure-sensing film (32) is fixedly mounted on the inner wall of the airbag (4). Large protrusions (5) are fixedly mounted on the inner walls of the flexible pressure-sensing film (32) near both sides. Small protrusions (6) are fixedly mounted on the inner wall of the flexible pressure-sensing film (32) near the middle. A cylinder (21) is fixedly mounted on the inner wall of the fixed base (1). An auxiliary frame (22) is fixedly mounted on the output end of cylinder 1 (21). An auxiliary block (33) is slidably connected to the inner wall of the auxiliary frame (22). A placement plate (24) is fixedly mounted on the top of the auxiliary block (33). An arc frame (13) is fixedly mounted on the side of the collar (2) away from the placement plate (24). An arc plate (14) is slidably connected to the inner wall of the arc frame (13). An adjustment frame (17) is fixedly mounted on the side of the arc plate (14). A connecting block (19) is slidably connected to the inner wall of the adjustment frame (17). A vascular imaging instrument (20) is fixedly mounted on the side of the connecting block (19).

2. The clinical anti-slip type automatic tightening and loosening tourniquet according to claim 1, characterized in that: The top of the fixed base (1) is provided with a slot (9), and the inner wall of the slot (9) near the bottom is provided with a connecting groove (10). An air pump (11) is fixedly installed on the inner wall of one end of the connecting groove (10), and an electromagnetic valve exhaust pipe (12) is fixedly installed on the inner wall of the other end of the connecting groove (10). The inner wall of the electromagnetic valve exhaust pipe (12) and the air outlet of the air pump (11) are connected to the inner wall of the collar (2) through the inner wall of the connecting groove (10) and the inner wall of the slot (9).

3. The clinical anti-slip automatic tightening and loosening tourniquet according to claim 1, characterized in that: The auxiliary frame (22) is fixedly fitted with a cylinder two (23) on its side. The output end of the cylinder two (23) is fixedly fitted with the side of the auxiliary block (33). The inner wall of the placement plate (24) is fixedly fitted with a silicone protrusion (25).

4. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 1, characterized in that: The inner wall of the small protrusion (6) is fixedly sleeved with a micro conductive silicone particle (31), and the micro conductive silicone particle (31) is electrically connected to the flexible pressure sensing film (32). The inner wall of the flexible pressure sensing film (32) is fixedly equipped with a blood pressure detection sensor (30).

5. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 4, characterized in that: The inner wall of the collar (2) is fixedly sleeved with a solenoid valve connecting pipe (7), and the inner wall of the collar (2) is connected to the inner wall of the airbag (4) through the inner wall of the solenoid valve connecting pipe (7). The inner wall of the collar (2) is fixedly equipped with a pressure sensor (8), and the pressure sensor (8) is electrically connected to the solenoid valve connecting pipe (7) and the air pump (11).

6. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 1, characterized in that: Rubber strips (15) are fixedly installed on the top and bottom of the inner wall of the arc-shaped frame (13), and rubber pads (16) are fixedly installed on the top and bottom of the arc-shaped plate (14), with adjacent rubber pads (16) in close contact with rubber strips (15).

7. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 1, characterized in that: The top of the adjusting frame (17) is fixedly fitted with a cylinder three (18), and the output end of the cylinder three (18) is fixedly fitted with the top of the connecting block (19).

8. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 5, characterized in that: An infrared ranging sensor (26) is fixedly mounted on the side of the collar (2) away from the arc frame (13). There are four infrared ranging sensors (26), and the four infrared ranging sensors (26) are evenly distributed on one side of the collar (2).

9. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 1, characterized in that: A rechargeable battery (28) is fixedly mounted on the inner wall of one side of the fixed base (1), and a main control module (27) is fixedly mounted on the inner wall of the other side of the fixed base (1). A control panel (29) is fixedly mounted on the side of the fixed base (1), and the control panel (29) is electrically connected to both the main control module (27) and the rechargeable battery (28).

10. A clinical anti-slip type automatic tightening and loosening tourniquet according to claim 8, characterized in that: The flexible pressure-sensing film (32) is electrically connected to the air pump (11), the solenoid valve exhaust pipe (12), and the angiography instrument (20) through the control panel (29) and the main control module (27). The infrared ranging sensor (26) is electrically connected to cylinder one (21) and cylinder two (23) through the control panel (29) and the main control module (27). The blood pressure detection sensor (30) is electrically connected to the control panel (29).

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