Visual emergency radial artery compression hemostat and use method thereof

Abstract

The invention belongs to the technical field of medical instruments, particularly relates to a visual emergency radial artery compression hemostat and a use method thereof, and aims to solve the problems that an existing hemostat is prone to slipping off, difficult to position and constant in pressure to cause ischemia. The technical scheme includes that the visual emergency radial artery compression hemostat comprises a fixing plate, a bottom receding groove and a protective cover are arranged at the bottom of the fixing plate, and a pressure head is arranged below the protective cover; a driving mechanism is arranged in the fixing plate and the protective cover and comprises a piston disc I which slides in the protective cover in a sealing manner and an air bag fixed in the pressure head, a receding mechanism is further arranged and is used for keeping the protective cover relatively static when the fixing plate moves, and a plurality of throttling holes are formed in the piston disc I to form a pressure reducing mechanism, so that high-viscosity silicone oil below can slowly flow upwards; the bottom of the pressure head is provided with a V-shaped groove and a suction cup, the hemostat can keep the compression position stable when limbs of a patient shake or transfer jolts, the compression force is automatically decreased along with time, and the hemostat is mainly applied to radial artery compression hemostasis in emergency treatment.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a visual emergency radial artery compression hemostat and its usage method. Background Technology

[0002] In emergency medicine, radial artery puncture is a common technique for arterial blood gas analysis, invasive blood pressure monitoring, and some interventional diagnostic and therapeutic procedures. After the puncture, effective and safe compression to stop bleeding at the puncture site is crucial. Currently, commonly used compression hemostasis methods include manual compression and the use of various compression hemostatic devices. Manual compression consumes a significant amount of time and effort from medical staff, and the pressure is difficult to maintain consistently. Existing mechanical compression hemostatic devices typically use a strap to fix the compression head to the puncture site, applying pressure through mechanical structures such as screws or clips.

[0003] Existing compression hemostatic devices still have many shortcomings in use:

[0004] When a patient moves their limbs due to pain, discomfort, or loss of consciousness, or when the patient is jolted during transport (such as in an ambulance), the hemostat body is prone to relative displacement with respect to the patient's skin, causing the pressure head to deviate from the puncture point and increasing the risk of rebleeding.

[0005] The bottom of most existing compression pads is made of smooth polymer material. When in contact with sweat, blood or disinfectant, a lubricating layer is formed between the skin and the compression pad, which greatly reduces the friction. It is very difficult to maintain the position by the tightening force of the straps alone, and it is easy to slip laterally, causing the compression point to shift and increasing the risk of rebleeding.

[0006] Traditional hemostats have a constant pressure once set, requiring nurses to manually loosen the nut every 1-2 hours to restore venous return. In major disasters or when emergency rooms are extremely busy, this can easily lead to prolonged ischemia in the patient's distal limbs due to forgetfulness, potentially resulting in amputation. Summary of the Invention

[0007] The purpose of this invention is to address the core technical defects of existing hemostatic devices in high-frequency scenarios of bumpy transport and limb movement in emergency situations: unstable positioning leading to displacement of the compression head and causing rebleeding; constant pressure leading to prolonged ischemia of distal limbs, nerve damage, or even amputation risk; and the inability to objectively and intuitively monitor the compression force, with adjustment relying entirely on the experience of medical staff. Therefore, this invention proposes a visualized emergency radial artery compression hemostatic device and its usage method.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A visual emergency radial artery compression hemostat includes:

[0010] A fixation plate, wherein the fixation plate is provided with a restraint mechanism for securing it to the patient's limbs;

[0011] The protective cover is movably disposed in the bottom relief groove at the bottom of the fixed plate, and its interior is filled with high-viscosity silicone oil.

[0012] A pressure head, located below the protective cover, is used to compress the radial artery;

[0013] The driving mechanism includes a piston disc I that is slidably and sealed within the protective cover and an air bladder disposed within the pressure head. When the piston disc I moves downward, it injects silicone oil from the protective cover into the air bladder, causing the air bladder to expand and drive the pressure head to move downward.

[0014] A clearance mechanism, connected between the fixed plate and the protective cover, is used to absorb the relative displacement between the fixed plate and the protective cover through elastic deformation when the fixed plate moves with the limb, so that the protective cover and the pressure head remain stationary in the pressing position; and

[0015] The pressure relief mechanism includes an energy storage element that provides continuous driving force for the compression action and a throttling orifice disposed on the piston disk I. The pressure applied by the energy storage element causes the silicone oil below the piston disk I to flow slowly upward through the throttling orifice under continuous pressure, thereby realizing the automatic reduction of the compression pressure. The energy storage element is a cylindrical helical spring I.

[0016] In one possible design, the clearance mechanism includes a fixed cylinder, a sliding rod, and a cylindrical helical spring II sleeved outside the fixed cylinder; a ball head is fixed at one end of the fixed cylinder and the sliding rod away from each other, and the two ball heads are respectively rolledly connected to the inner wall of the bottom clearance groove and the outer wall of the protective cover; the two ends of the cylindrical helical spring II abut against the inner wall of the bottom clearance groove and the outer wall of the protective cover, respectively.

[0017] In one possible design, the drive mechanism further includes a rotating head rotatably connected to the top of the fixed plate, a lifting plate threadedly connected to the rotating head, and a fixed column whose top end abuts against the lifting plate; the fixed column is slidably disposed on the top of the protective cover, and a piston plate II is slidably connected inside it; the top of the piston plate II and the inner wall of the top of the fixed column are respectively fixedly connected to the bottom and top ends of the cylindrical helical spring I through spring seats; the bottom of the piston plate II is rotatably connected to the rotating column, which extends downward and is rotatably connected to the piston plate I; rotating the rotating head can drive the lifting plate to move downward, thereby pushing the fixed column and the piston plate I to move downward.

[0018] In one possible design, the pressure-reducing mechanism further includes a rotating disk fixedly sleeved on the rotating column, and a sealing plate slidably connected to the top of the piston disk I for sealing the throttling orifice; the rotating disk is provided with an arc-shaped groove, and a pin is fixed on the sealing plate, the top end of the pin being slidably connected to the arc-shaped groove; a rotating seat is rotatably connected to the bottom of the protective cover, and multiple tension springs are fixed between the top inner wall of the rotating seat and the pressure head through spring seats; a rotating tube is fixedly inserted through the rotating seat, the top end of the rotating tube extends rotatably into the protective cover, the bottom end of the rotating tube is fixedly connected to the airbag, and a transmission rod is fixedly inserted inside the rotating tube, the transmission rod extending upward and connecting to the rotating disk.

[0019] In one possible design, the bottom of the pressure head is provided with multiple V-grooves and multiple suction cups; when pressure is applied, the V-grooves are used to guide the liquid from the skin surface to drain out, and the suction cups are used to adhere to the skin surface to prevent lateral slippage.

[0020] In one possible design, the protective cover is provided with a reset circuit, which includes a U-shaped tube and a one-way valve disposed inside the U-shaped tube. Both ends of the U-shaped tube are connected to the protective cover, and the two ends of the U-shaped tube are respectively located above and below the piston disc I. When the piston disc I moves upward to reset, the one-way valve opens, allowing the silicone oil above to flow back to the bottom through the U-shaped tube.

[0021] In one possible design, a cylinder is also provided on top of the fixed plate. The cylinder is connected to the inner cavity of the protective cover via a conduit, and the connection position is located below the piston disc I. A piston disc III is slidably connected inside the cylinder, and a cylindrical helical spring III is provided between the piston disc III and the inner wall of the cylinder. The piston disc III moves under the silicone oil pressure transmitted by the conduit, and its displacement is used to characterize the current pressure force.

[0022] In one possible design, the cylinder is made of a transparent material, and its outer wall is marked with scale markings for visually reading the displacement of the piston disc III.

[0023] In one possible design, the restraint mechanism includes connecting plates and straps fixed to both sides of the fixing plate, the ends of the connecting plates being hook-shaped, and the ends of the straps being fixed with connectors that snap into the hook-shaped ends.

[0024] The yielding mechanism solves the problem of pressure point displacement in bumpy transport scenarios, providing a structural basis for continuous and stable pressure; the anti-slip pressure head structure eliminates the risk of slippage on wet skin surfaces, forming a dual positioning guarantee with the yielding mechanism to ensure that the pressure position is always accurate. Together, the two solve the problems of easy displacement of hemostats and high risk of rebleeding in emergency scenarios.

[0025] The automatic decompression mechanism achieves automatic linear reduction of pressure over time on the basis of stable compression, without the need for manual intervention, thus avoiding the risk of limb ischemia in busy emergency scenarios. The pressure visualization mechanism provides accurate pressure monitoring throughout the entire process of pressurization and decompression, ensuring accurate pressure application and controllable decompression. Together, the two mechanisms solve the problems of uncontrollable pressure and easy occurrence of ischemic complications in existing hemostatic devices.

[0026] Together, they achieved stable positioning, accurate decompression, visible pressure, and convenient operation in emergency transport scenarios.

[0027] A method for using a visual emergency radial artery compression hemostat includes the following steps:

[0028] S1. Initial Fixing and Pressurization: Place the fixing plate above the target pressure position, align the pressure head with the pressure position, wrap the fixing part with straps and snap the connector into the hook of the connecting plate to complete the initial fixing; manually rotate the rotating head, and the lifting plate moves down through the cooperation of the threaded ring and the annular groove, pressing down the top of the fixing column. The piston plate I is driven down through the piston plate II and the rotating column, squeezing the silicone oil below it and injecting it into the airbag through the rotating tube; the airbag expands and pushes the pressure head to overcome the tension spring and output pressure, while the cylindrical helical spring I is compressed and stores energy.

[0029] S2. Automatic pressure reduction: Under pressure, the thrust of the cylindrical helical spring I drives the piston plate II, the rotating column and the piston plate I to move down, so that the silicone oil slowly seeps up through the throttling hole on the piston plate I, causing the piston plate I and the piston plate II to slowly sink down. The thrust of the cylindrical helical spring I decreases accordingly, thereby realizing that the pressure output of the pressure head decreases linearly with time.

[0030] S3. Adjusting the deceleration rate: Rotate the rotating seat as needed to drive the rotating tube, transmission rod, rotating column and rotating disk to rotate, so that the arc groove pushes the pin to move, and drives the sealing plate to slide on the top of the piston disk I. The deceleration rate of the pressure is adjusted by changing the blocking area of ​​the throttling orifice.

[0031] S4. Displacement Compensation: When the fixed plate is displaced by external forces, the cylindrical helical spring II in the relief mechanism absorbs the displacement energy and, together with the extension and retraction of the fixed cylinder and the sliding rod and the rolling of the ball head, keeps the protective cover and the pressure head stationary relative to the target pressure position.

[0032] S5. Pressure monitoring and reading: During the compression process, the reaction force borne by the pressure head is transmitted to the piston disc III in the cylinder through the air bladder, rotating tube, lower part of the protective cover, and silicone oil in the guide tube, which pushes it to compress the cylindrical helical spring III. The current compression pressure value is read by observing the transparent scale of the cylinder.

[0033] S6. Depressurization and Reset: After the operation is completed, rotate the rotating head in the opposite direction to move the lifting plate upward, release the thrust on the fixed column, and drive the pressure head to move upward and reset; the silicone oil in the airbag flows back to the protective cover to drive the piston plate I and the fixed column to move upward, and the silicone oil above the piston plate I returns to the bottom through the U-tube and the one-way valve to complete the device reset.

[0034] Beneficial effects: In this invention, by setting a relief mechanism including a fixed cylinder, a sliding rod, a ball head and a cylindrical helical spring, the protective cover is connected to the bottom relief groove of the fixed plate in a floating manner. When the patient's limb moves or the fixed plate is displaced due to external bumps, the relief mechanism can absorb the displacement energy through extension and swing, so that the protective cover and the pressure head inside it remain relatively stationary. This ensures that the pressure head can always accurately and stably press on the radial artery puncture point, effectively avoiding the risk of rebleeding caused by the displacement of the pressure point. It is particularly suitable for unstable environments such as emergency and transportation.

[0035] In this invention, a purely mechanical hydraulic delay pressure reduction mechanism is constructed by opening a throttling orifice on the piston disc I and combining it with the continuous thrust of a cylindrical helical spring. After the compression begins, under the action of the spring force, the silicone oil under the piston disc I is forced to flow upward through the throttling orifice at an extremely slow speed, thereby realizing the slow sinking of the piston disc I and the smooth release of the spring thrust. This process allows the physical pressure applied by the pressure head to the radial artery to decrease automatically and linearly over time, without the need for repeated manual adjustment by medical staff, reducing the workload and avoiding serious complications such as distal limb ischemia, nerve damage, or even necrosis caused by prolonged constant high pressure compression, thus improving the safety of compression hemostasis.

[0036] In this invention, by setting up a rotating disk, arc groove, and sealing plate linked with piston disk I, active control of the orifice opening is achieved. Medical staff can drive the sealing plate to move by rotating the rotating seat according to actual needs, thereby changing the effective flow area of ​​the orifice and precisely adjusting the upward flow speed of silicone oil. This achieves real-time, stepless control of the pressure deceleration rate. This adjustability allows the hemostat to adapt to the needs of different patients (such as differences in coagulation function) and different clinical stages, realizing individualized and precise decompression treatment.

[0037] In this invention, a V-shaped groove is set at the bottom of the pressure head and a micro suction cup is embedded therein. The problem of fixing the pressure head to a wet and slippery skin surface is solved by using a physical structure. When pressure is applied, the V-shaped groove quickly guides and drains the blood, sweat and other liquids on the skin surface, allowing the suction cup to directly adhere to dry skin. As the pressure head is pressed down, a slight negative pressure is formed inside the suction cup, generating a strong adsorption force that firmly fixes the pressure head to the skin. This design effectively eliminates the slippage effect caused by the liquid film and ensures that the pressure head can maintain a stable position when subjected to lateral force, further enhancing the reliability of the pressure.

[0038] In this invention, a purely mechanical pressure visualization monitoring component is constructed by connecting the working chamber inside the protective cover to a piston disc III inside a transparent cylinder via a conduit, and by setting a cylindrical helical spring and a scale. When the pressure head is compressed, the pressure is transmitted to the piston disc III through the silicone oil medium, pushing it to move and indicating the corresponding pressure value on the scale. This allows medical staff to intuitively and accurately read the current compression pressure at any time without the aid of any electronic devices, providing an objective basis for clinical decision-making and avoiding the blindness of judgment based on experience.

[0039] In this invention, a restraint mechanism achieves stable fixation, adapting to different patient body sizes, improving the device's versatility and patient comfort. A drive mechanism enables precise adjustment of the compression force, and hydraulic transmission ensures even distribution of the compression force, reducing vascular damage. A clearance mechanism provides purely mechanical shock absorption and isolation, ensuring the pressure head is always aligned with the radial artery to be compressed during transport, enhancing the device's applicability in emergency transport scenarios. A decompression mechanism enables purely mechanical automatic decompression, allowing flexible adjustment of the decompression speed and avoiding complications caused by prolonged high-pressure compression. The anti-slip structure of the pressure head eliminates the slippage effect, further improving compression stability. A visual display structure enables intuitive reading of the compression force, improving the accuracy of compression force adjustment. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of a visualized emergency radial artery compression hemostat provided by the present invention;

[0041] Figure 2 A three-dimensional exploded structural diagram of a visualized emergency radial artery compression hemostat provided by the present invention;

[0042] Figure 3 A cross-sectional view of the fixation plate of a visual emergency radial artery compression hemostat provided by the present invention;

[0043] Figure 4 A three-dimensional cross-sectional view of the rotating head and fixing column of a visualization emergency radial artery compression hemostat provided by the present invention;

[0044] Figure 5 This is a three-dimensional exploded structural diagram of the protective cover, annular support plate, and pressure head of a visual emergency radial artery compression hemostat provided by the present invention.

[0045] Figure 6 This invention provides a three-dimensional exploded cross-sectional view of the rotating seat and pressure head of a visualized emergency radial artery compression hemostat.

[0046] Figure 7A three-dimensional exploded view of the yielding mechanism of a visualized emergency radial artery compression hemostat provided by the present invention;

[0047] Figure 8 This is a three-dimensional structural diagram of the V-groove and suction cup of a visual emergency radial artery compression hemostat provided by the present invention.

[0048] Figure 9 This is a three-dimensional exploded view of the catheter and rotating disc of a visualization emergency radial artery compression hemostat provided by the present invention.

[0049] Figure 10 A three-dimensional cross-sectional view of the protective cover of a visual emergency radial artery compression hemostat provided by the present invention;

[0050] Figure 11 This is a cross-sectional schematic diagram of the fixing plate and cylinder of a visual emergency radial artery compression hemostat provided by the present invention.

[0051] Figure 12 This is a cross-sectional structural diagram of the cylinder of a visual emergency radial artery compression hemostat provided by the present invention.

[0052] In the diagram: 1. Fixing plate; 2. Connecting plate; 3. Strapping; 4. Joint; 5. Bottom clearance groove; 6. Protective cover; 7. Piston disc I; 8. Top clearance groove; 9. Lifting disc; 10. Threaded ring; 11. Rotating head; 12. Annular groove; 13. Fixing column; 14. Piston disc II; 15. Cylindrical helical spring I; 16. Rotating column; 17. Rotating seat; 18. Pressure head; 19. Airbag; 20. Rotating tube; 21. Tension spring; 22. Clearance Mechanism; 23. Fixed cylinder; 24. Sliding rod; 25. Ball head; 26. Cylindrical helical spring II; 27. Annular relief groove; 28. Annular support plate; 29. ​​V-groove; 30. Suction cup; 31. Transmission rod; 32. Conduit; 33. Throttling orifice; 34. Sealing plate; 35. Pin; 36. Rotating disk; 37. Arc groove; 38. U-tube; 39. One-way valve; 40. Cylinder body; 41. Piston disk III; 42. Cylindrical helical spring III. Detailed Implementation

[0053] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0054] In one embodiment: Refer to Figure 1 and Figure 2A visual emergency radial artery compression hemostat is disclosed, relating to the field of medical device technology. It includes a fixation plate 1, which serves as the mounting base for the entire device. The fixation plate 1 is roughly circular in shape. In specific implementations, it can be ergonomically designed according to the anatomical characteristics of the human wrist to make it fit the skin surface better. The outer wall of the fixation plate 1 is provided with a binding mechanism, which is used to securely bind the fixation plate 1 to the part of the patient's radial artery to be compressed for hemostasis, such as the part of the distal radial artery with obvious pulsation in the forearm.

[0055] Reference Figure 1 and Figure 2 The binding mechanism includes two connecting plates 2, which are fixedly connected to the two sides of the fixed plate 1 respectively. The end of the connecting plate 2 away from the fixed plate 1 is processed into a hook shape to form a buckle structure. Below the fixed plate 1, a flexible strap 3 is provided. Each end of the strap 3 is fixedly connected to a connector 4, the shape of which matches the hook of the connecting plate 2.

[0056] When in use, after placing the fixation plate 1 at the predetermined compression position, wrap the strap 3 around the patient's forearm, and then snap the connectors 4 at both ends into the hooks of the corresponding connecting plate 2 to complete the fixation. This snap-on connection method is quick to operate and easy to operate with one hand, which is advantageous in emergency environments.

[0057] Reference Figure 3 At the bottom of the fixing plate 1, i.e. the side facing the skin, there is a bottom relief groove 5. The bottom relief groove 5 is a recessed cavity that houses a protective cover 6. The protective cover 6 is a hollow shell structure filled with high-viscosity silicone oil. As a force transmission medium, high-viscosity silicone oil has the characteristics of incompressibility, good chemical stability, and low viscosity affected by temperature, which can provide a stable medium basis for subsequent pressure transmission and adjustment. Below the protective cover 6, i.e. closer to the skin, there is a pressure head 18. The pressure head 18 is a component that directly contacts the skin puncture point and applies pressure. The fixing plate 1 and the protective cover 6 are jointly provided with a drive mechanism for driving the pressure head 18 to move down to compress the patient's radial artery.

[0058] Reference Figure 1 and Figure 2 In one specific implementation, the drive mechanism includes a piston disc I7 that is slidably connected to the inner wall of the protective cover 6, and an air bladder 19 that is fixedly installed inside the pressure head 18. The outer periphery of the piston disc I7 is tightly fitted to the inner wall of the protective cover 6 to form a seal, dividing the inner cavity of the protective cover 6 into upper and lower parts. The upper and lower parts are filled with high-viscosity silicone oil. The air bladder 19 is a flexible and expandable structure, with one end fixedly connected to the pressure head 18 and the other end connected to the rotating seat 17 described later.

[0059] Reference Figure 3 and Figure 4 The drive mechanism also includes a fixed column 13, which slides through the top inner wall of the protective cover 6. The fixed column 13 is a tubular structure with a hollow interior and is slidably connected to a piston disc II 14. A cylindrical helical spring I 15 is fixedly connected between the top of the piston disc II 14 and the top inner wall of the fixed column 13 through a spring seat. The cylindrical helical spring I 15 may be in a slightly pre-compressed or free state in the initial state, and its function is to provide a continuous downward thrust. A rotating column 16 is rotatably connected to the bottom of the piston disc II 14. The lower end of the rotating column 16 extends to the bottom of the fixed column 13 and is rotatably connected to the top of the piston disc I 7 located inside the protective cover 6. In this way, the piston disc II 14, the rotating column 16 and the piston disc I 7 form a linkage structure that can transmit axial force and rotation.

[0060] Reference Figure 3 , Figure 5 and Figure 6 At the bottom of the protective cover 6, a rotating seat 17 is connected via a rotating sealing structure. Simultaneously, a rotating tube 20 is sealed and rotated through the bottom of the protective cover 6, with its bottom end fixedly penetrating the rotating seat 17 and extending into the airbag 19, which is fixedly connected to the inner cavity of the airbag 19. The top of the airbag 19 is fixedly connected to the top inner wall of the rotating seat 17. The pressure head 18 is slidably installed in the rotating seat 17 and can move up and down relative to the rotating seat 17. Multiple tension springs 21 are fixedly connected between the top inner wall of the rotating seat 17 and the pressure head 18 via spring seats. These tension springs 21 apply an upward pulling force to the pressure head 18 in the initial state, keeping it in an initial position. To ensure the stability and vibration resistance of the pressure head 18 in the non-working state, the inner wall of the rotating seat 17 is provided with at least one guide groove (not shown in the figure) along the axial direction, and the outer wall of the pressure head 18 is provided with guide ribs that slide in cooperation with the guide groove. In addition, at the initial position of the pressure head 18, an elastic positioning buckle (not shown) can be provided on the rotating seat 17. When the pressure head 18 retracts to the initial position, the buckle can temporarily lock the pressure head 18. When pressure is needed, the hydraulic pressure pushes the pressure head 18 downward to automatically release the lock. When the piston disc I7 moves downward under the drive, it will press the silicone oil in the lower part of the protective cover 6 into the airbag 19 through the rotating tube 20. The airbag 19 expands and pushes the pressure head 18 downward to overcome the tension of the tension spring 21, thereby applying pressure to the skin puncture point.

[0061] Reference Figure 3 and Figure 5A rotating head 11 is rotatably connected to the top of the fixed plate 1. A top clearance groove 8 is also provided on the top of the fixed plate 1, and a lifting plate 9 is slidably connected in the top clearance groove 8. The top end of the fixed column 13 extends upward and abuts against the bottom of the lifting plate 9. A threaded ring 10 is fixedly connected to the top of the lifting plate 9. Correspondingly, an annular groove 12 is provided at the bottom of the rotating head 11. An internal thread is machined on the inner wall of the annular groove 12. The threaded ring 10 extends into the annular groove 12 and is threadedly connected to the internal thread of the annular groove 12. By manually rotating the rotating head 11, the threaded ring 10 and the lifting plate 9 can be driven to move axially. Since the lifting plate 9 is in contact with the top of the fixed column 13, the downward movement of the lifting plate 9 will push the fixed column 13, the rotating column 16 and the piston plate I7 ​​to move downward as a whole, thereby achieving the purpose of injecting silicone oil into the airbag 19. The existence of the top clearance groove 8 allows the upper end of the fixed column 13 to tilt or shift to a certain extent in the top clearance groove 8 when the fixed plate 1 and the protective cover 6 are relatively displaced, so as not to get stuck and ensure the realization of the clearance function.

[0062] Reference Figure 3 and Figure 5 To ensure the positioning mechanism 22 operates more smoothly, an annular support plate 28 is fixedly connected to the inner wall of the bottom clearance groove 5 of the fixed plate 1. Correspondingly, an annular clearance groove 27 is provided on the outer wall of the protective cover 6. The annular support plate 28 extends into the annular clearance groove 27. At the same time, the top of the protective cover 6 slides in conjunction with the top inner wall of the bottom clearance groove 5. Thus, through the combined action of the annular support plate 28 and the top inner wall of the bottom clearance groove 5, the protective cover 6 is limited in the vertical direction to prevent it from accidentally falling out of the bottom clearance groove 5, while allowing it to move and rotate within a certain range in the horizontal direction.

[0063] Reference Figure 3 , Figure 5 and Figure 7 The entire hemostat also includes multiple clearance mechanisms 22. The function of the clearance mechanism 22 is to keep the protective cover 6 and the pressure head 18 below it stationary relative to the patient's skin when the fixing plate 1 is displaced due to the movement of the patient's limb or external bumps, thus preventing the protective cover 6 from slipping away from the radial artery to be compressed position and ensuring continuous and effective compression.

[0064] Reference Figure 3 , Figure 5 and Figure 7In one specific implementation, the clearance mechanism 22 includes a fixed cylinder 23 and a sliding rod 24. One end of the fixed cylinder 23 is rolledly connected to the inner wall of the bottom clearance groove 5 through a ball head 25, and one end of the sliding rod 24 is also rolledly connected to the outer wall of the protective cover 6 through another ball head 25. The other end of the sliding rod 24 is slidably inserted into the interior of the fixed cylinder 23, so that the fixed cylinder 23 and the sliding rod 24 form a telescopic structure with variable length. A cylindrical helical spring II 26 is sleeved on the outside of the fixed cylinder 23. The two ends of the cylindrical helical spring II 26 are fixedly connected to the inner wall of the bottom clearance groove 5 and the outer wall of the protective cover 6 through spring seats, respectively. In this way, multiple clearance mechanisms 22 are radially or circumferentially distributed in the bottom clearance groove 5, jointly supporting and connecting the protective cover 6, so that it has a small range of floating ability with multiple degrees of freedom relative to the fixed plate 1.

[0065] Reference Figure 3 , Figure 9 and Figure 10 The hemostat is also equipped with a decompression mechanism. This mechanism is used to automatically reduce the pressure over time after physical compression is applied to the radial artery through the pressure head 18, thereby avoiding distal limb ischemia due to prolonged excessive compression and the risk of amputation. The core structure of this decompression mechanism includes multiple throttling holes 33 on the piston disc I7. These throttling holes 33 penetrate the piston disc I7 and are tiny channels connecting the space below and above the piston disc I7. Their function is to allow the high-viscosity silicone oil below the piston disc I7 to flow to the top of the piston disc I7 at a very slow speed through these throttling holes 33 under the continuous action of the driving force, thereby achieving the slow sinking of the piston disc I7 and thus reducing the pressure.

[0066] Reference Figure 3 , Figure 9 and Figure 10To achieve controllable adjustment of the pressure reduction rate during the decompression process, the decompression mechanism also includes a rotating disk 36, which is fixedly sleeved on the outer wall of the rotating column 16. The rotating disk 36 has multiple arc-shaped grooves 37. Multiple sealing plates 34 are slidably connected to the top of the piston disk 17 via a slide rail. Each sealing plate 34 corresponds to a throttling orifice 33, used to block or open the orifice 33. A pin 35 is fixed to the top of each sealing plate 34. The tips of these pins 35 extend upwards and are inserted into the corresponding arc-shaped grooves 37 on the rotating disk 36, slidingly engaging with the grooves. When the rotating column 16 drives the rotating disk 36 to rotate, the sidewall of the arc-shaped groove 37 pushes the pin 35, thereby driving the sealing plate 34 to move along the slide rail, changing its overlap area with the throttling orifice 33, and thus controlling the flow of silicone oil through the throttling orifice. To drive the rotating column 16 to rotate, a transmission rod 31 is fixed inside the rotating tube 20. The transmission rod 31 is coaxial with the rotating tube 20 and is fixed to the inner wall of the rotating tube 20 by a cross plate. The top of the transmission rod 31 passes through the piston disc I7 and slides into the interior of the rotating column 16. The outer wall of the transmission rod 31 is provided with a slide bar extending axially, while the inner wall of the rotating column 16 is provided with an axial groove that matches the slide bar. The cooperation between the slide bar and the groove allows the transmission rod 31 to slide axially relative to the rotating column 16, while also transmitting torque. Therefore, when the medical staff rotates the rotating seat 17, it will drive the rotating tube 20 and the transmission rod 31 to rotate synchronously. The transmission rod 31 then drives the rotating column 16 and the rotating disc 36 to rotate through the slide bar-groove structure, ultimately driving the closing plate 34 to move, thereby controlling the opening of the throttling orifice 33.

[0067] Reference Figure 10To facilitate quick repositioning of the piston disc I7 after compression for subsequent use, a U-shaped tube 38 is fixedly inserted through one side of the protective cover 6. Both ends of the U-shaped tube 38 extend into the interior of the protective cover 6, positioned above and below the piston disc I7, respectively. A one-way valve 39 is installed inside the U-shaped tube 38, allowing silicone oil to flow only from the top to the bottom of the piston disc I7. When the pressure head 18 needs to be retracted after compression, the thrust on the piston disc I7 can be released by rotating the rotating head 11 in the opposite direction. At this point, the piston disc I7 can be moved upwards by pulling the fixing column 13 or other components upwards using external tools or manually. During the upward movement of the piston disc I7, the silicone oil above it is compressed. As the pressure increases, when it reaches the opening pressure of the one-way valve 39, the silicone oil is forced back down to the bottom of the piston disc I7 through the U-tube 38 and the one-way valve 39, thus realizing the recycling of the working medium and the rapid reset of the components. To ensure reliability in environments contaminated with bodily fluids, the U-tube 38 and its connection with the protective cover 6 are reinforced with medical-grade sealant for secondary sealing. The one-way valve 39 is a pollution-resistant, anti-clogging umbrella valve or a valve-type one-way valve. It should be noted that this device is a precision medical device. Before use, the integrity of each component should be checked. During use, avoid violent pulling and maintain and replace it regularly according to the hospital's infection control requirements to prevent performance degradation due to aging or contamination of the seals.

[0068] Reference Figure 9 To enhance the adhesion stability between the pressure head 18 and the skin and prevent slippage on wet or sweaty / bloody skin surfaces, multiple V-grooves 29 can be provided at the bottom of the pressure head 18. Simultaneously, multiple micro-suction cups 30 are also fixedly embedded at the bottom of the pressure head 18. When the pressure head 18 presses down to contact the skin, liquids on the skin surface (such as sweat and blood) are squeezed into the V-grooves 29 and quickly drained away, allowing the suction cups 30 to make close contact with the dry skin surface. As the pressure head 18 continues to press down, the air and residual liquid inside the suction cups 30 are squeezed out, causing the suction cups 30 to elastically deform and their edges to form a sealed contact with the skin. When the pressure force causes the suction cups 30 to have a slight rebound tendency, the pressure inside the tiny sealed cavity formed between it and the skin decreases, thereby producing an auxiliary adsorption effect. This further enhances the pressure head 18's resistance to lateral slippage, firmly fixing the pressure head 18 to the skin and effectively resisting horizontal shear forces.

[0069] In another embodiment: Refer to Figures 10-12To visualize the compression pressure and facilitate real-time monitoring by medical staff, a transparent cylinder 40 is fixedly connected to the top of the fixing plate 1. The bottom of the cylinder 40 is connected to the inside of the protective cover 6 through a conduit 32, and the connection point is located below the piston disc I 7. Inside the cylinder 40, a piston disc III 41 is slidably connected in a sealed manner. On the side of the piston disc III 41 away from the conduit 32, a cylindrical helical spring III 42 is fixed through a spring seat. The other end of the cylindrical helical spring III 42 is fixedly connected to the inner wall of the end of the cylinder 40 through a spring seat. The cylinder 40 is made of transparent acrylic material, and its outer wall is marked with clear scale marks.

[0070] Specifically, when the pressure head 18 presses against the skin and receives a reaction force, this reaction force is transmitted to the piston disc I7 through the silicone oil medium, and further transmitted to the piston disc III41 in the cylinder 40 through the silicone oil in the conduit 32, pushing the piston disc III41 to one side and compressing the cylindrical helical spring III42 at the same time. The distance the piston disc III41 moves is proportional to the pressure it receives. By reading the position of the piston disc III41 on the scale, medical staff can intuitively and accurately know the magnitude of the pressure applied to the skin by the pressure head 18. The entire process does not rely on any electronic sensors, and the purely mechanical structure ensures its reliability in any environment.

[0071] A method for using a visual emergency radial artery compression hemostat includes the following steps:

[0072] S1. When using this hemostat, the medical staff first place the fixing plate 1 above the patient's radial artery puncture point, aligning the pressure head 18 with the puncture point. Then, the strap 3 is wrapped around the patient's forearm, and the connectors 4 at both ends are respectively inserted into the hooks of the connecting plate 2, completing the initial fixation of the hemostat on the patient's limb. Next, the medical staff manually rotates the rotating head 11. The rotation of the rotating head 11 is converted into the axial downward movement of the lifting plate 9 through the threaded engagement of the threaded ring 10 and the annular groove 12. The top of the fixed column 13 is pressed down, and the piston disk I7 is driven to move down through the piston disk II 14 and the rotating column 16. The downward movement of the piston disk I7 will immediately squeeze the silicone oil below it. The silicone oil is injected into the airbag 19 through the rotating tube 20. The airbag 19 expands and pushes the pressure head 18 to move down against the tension of the tension spring 21 until it is tightly pressed on the skin at the puncture point. At this time, the cylindrical helical spring I 15 is compressed by the piston disk II 14 in the fixed column 13 and accumulates elastic potential energy, which provides a power source for subsequent continuous pressurization.

[0073] S2. Once the pressure is applied, the pressure-reducing mechanism immediately begins operation. Under the continuous downward thrust of the cylindrical helical spring I15, the piston disc II14 tends to continue moving downwards. This force is transmitted to the piston disc I7 via the rotating column 16. Since the silicone oil passages below the piston disc I7 (except for the throttling orifice 33) are closed, the silicone oil can only slowly seep from the multiple throttling orifices 33 on the piston disc I7 to the top of the piston disc I7 at an extremely slow speed. This seepage process is very slow; for example, it can be set to flow at 1 ml per hour. As the flow slows down, piston disc I7 and its connected piston disc II14 also slowly sink. The cylindrical helical spring I15 gradually extends, and its thrust on piston disc II14 decreases accordingly. This reduced thrust is transmitted to the pressure head 18 through the silicone oil medium, so that the physical pressure applied by the pressure head 18 to the radial artery decreases linearly and automatically over time. By selecting silicone oil of different viscosities and designing throttling orifices 33 of different diameters and numbers, the rate of pressure reduction can be precisely controlled to adapt to the coagulation function status and clinical needs of different patients.

[0074] S3. During decompression, if it is necessary to adjust the rate of pressure reduction according to the patient's specific condition, this can be achieved by rotating the rotating seat 17. The rotation of the rotating seat 17 will drive the rotating tube 20, transmission rod 31, rotating column 16 and rotating disk 36 to rotate together. The arc groove 37 on the rotating disk 36 will rotate accordingly, pushing the pin 35 slidably connected to it to move. The pin 35 will drive the sealing plate 34 to slide on the top of the piston disk I7, thereby changing the blocking area of ​​the sealing plate 34 on the throttling orifice 33. When the blocking area increases, the effective flow area of ​​the throttling orifice 33 decreases, the flow rate of silicone oil slows down, and the rate of pressure reduction also slows down; conversely, the rate of pressure reduction increases. In this way, medical staff can manually adjust the rate of pressure reduction at any time during the compression process according to the observed bleeding and blood supply status of the distal limbs, so as to achieve more precise and individualized compression hemostasis management.

[0075] S4. When the patient experiences pain, movement, or jolting during transport, causing the fixation plate 1 to shift, the yielding mechanism 22 begins to function. Since the protective cover 6 is connected to the fixation plate 1 through multiple yielding mechanisms 22, and the cylindrical helical spring II 26 has a certain elasticity, when the fixation plate 1 experiences transient displacement, its displacement energy is first absorbed by the compression or stretching deformation of the cylindrical helical spring II 26. At the same time, the telescopic movement between the fixation cylinder 23 and the sliding rod 24, as well as the rolling connection of the ball heads 25 at both ends, allow the protective cover 6 and the pressure head 18 inside it to remain relatively stationary relative to the moving fixation plate 1. Through the above structure, when the fixation plate 1 shifts, the yielding mechanism 22 absorbs and isolates the displacement of the fixation plate 1 through elastic deformation and telescopic movement, thereby allowing the protective cover 6 and the pressure head 18 to remain in their original compression position as much as possible, ensuring that the bottom of the pressure head 18 continuously and stably contacts and compresses the puncture point, and will not slip due to external disturbances, thus improving the safety and reliability of hemostasis.

[0076] S5. Simultaneously, during the compression process, the reaction force from the skin at the bottom of the pressure head 18 is transmitted through the silicone oil in the airbag 19, the silicone oil in the rotating tube 20, the silicone oil in the lower part of the protective cover 6, and the silicone oil in the catheter 32, all the way to the piston disc III 41 in the cylinder 40. This pressure will push the piston disc III 41 to move and compress the cylindrical helical spring III 42. Since the compression of the cylindrical helical spring III 42 is proportional to the pressure it receives, and the cylinder 40 is made of transparent material and has a scale, the displacement of the piston disc III 41 directly corresponds to the magnitude of the compression pressure. Medical staff can accurately read the current compression pressure value at any time by observing the scale on the cylinder 40, thereby making a judgment on whether intervention is needed, realizing the visual monitoring of pressure.

[0077] S6. When the hemostatic device needs to be removed after compression hemostasis is completed, the medical staff first rotates the rotating head 11 in the opposite direction to move the lifting plate 9 upward, thereby relieving the downward pushing force on the fixing column 13. Then, the tension of the tension spring 21 drives the pressure head 18 to move upward and reset. The silicone oil in the airbag 19 is re-injected into the protective cover 6, and drives the piston plate I7 ​​and the fixing column 13 to move upward and reset. When the piston plate I7 ​​moves upward, the pressure in the space above it increases, and the silicone oil is quickly pushed back into the space below the piston plate I7 ​​through the U-shaped tube 38 and the one-way valve 39. At this point, the entire device is restored to its initial state, which can be easily cleaned and disinfected for the next use.

[0078] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0079] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A visual emergency radial artery compression hemostat, characterized in that, include: Fixing plate (1), the fixing plate (1) is provided with a restraint mechanism for binding it to the patient's limb; The protective cover (6) is movably disposed in the bottom relief groove (5) at the bottom of the fixed plate (1), and its interior is filled with high viscosity silicone oil. A pressure head (18) is located below the protective cover (6) and is used to compress the radial artery; The driving mechanism includes a piston disc I (7) that is slidably sealed within the protective cover (6) and an air bladder (19) located within the pressure head (18). When the piston disc I (7) moves downward, it injects silicone oil from the protective cover (6) into the air bladder (19), causing the air bladder (19) to expand and drive the pressure head (18) to move downward. The yielding mechanism (22) is connected between the fixed plate (1) and the protective cover (6) and is used to absorb the relative displacement between the fixed plate (1) and the protective cover (6) through elastic deformation when the fixed plate (1) moves with the limb, so that the protective cover (6) and the pressure head (18) remain stationary in the pressing position. as well as The pressure relief mechanism includes an energy storage element that provides continuous driving force for the compression action and a throttling orifice (33) disposed on the piston disc I (7). The pressure applied by the energy storage element causes the silicone oil below the piston disc I (7) to flow slowly upward through the throttling orifice (33) under continuous pressure, thereby realizing the automatic reduction of the compression pressure. The energy storage element is a cylindrical helical spring I (15).

2. The visual emergency radial artery compression hemostat according to claim 1, characterized in that, The clearance mechanism (22) includes a fixed cylinder (23), a sliding rod (24), and a cylindrical helical spring II (26) sleeved on the fixed cylinder (23); a ball head (25) is fixedly provided at one end of the fixed cylinder (23) and the sliding rod (24) that are far apart from each other, and the two ball heads (25) are respectively rolledly connected to the inner wall of the bottom clearance groove (5) and the outer wall of the protective cover (6); the two ends of the cylindrical helical spring II (26) abut against the inner wall of the bottom clearance groove (5) and the outer wall of the protective cover (6).

3. The visual emergency radial artery compression hemostat according to claim 2, characterized in that, The driving mechanism also includes a rotating head (11) rotatably connected to the top of the fixed plate (1), a lifting plate (9) threadedly connected to the rotating head (11), and a fixed column (13) whose top end abuts against the lifting plate (9); the fixed column (13) is slidably installed on the top of the protective cover (6), and a piston plate II (14) is slidably connected inside it. The top of the piston plate II (14) and the inner wall of the top of the fixed column (13) are respectively fixedly connected to the bottom end and the top end of the cylindrical helical spring I (15) through spring seats; the bottom of the piston plate II (14) is rotatably connected to a rotating column (16), and the rotating column (16) extends downward and is rotatably connected to the piston plate I (7); rotating the rotating head (11) can drive the lifting plate (9) to move downward, thereby pushing the fixed column (13) and the piston plate I (7) to move downward.

4. The visual emergency radial artery compression hemostat according to claim 3, characterized in that, The pressure relief mechanism also includes a rotating disk (36) fixedly sleeved on the rotating column (16) and a sealing plate (34) slidably connected to the top of the piston disk I (7) for sealing the throttle hole (33); the rotating disk (36) is provided with an arc groove (37), and a pin (35) is fixed on the sealing plate (34), the top end of the pin (35) is slidably connected in the arc groove (37); the bottom of the protective cover (6) is rotatably connected to a rotating seat (17), and multiple tension springs (21) are fixed between the top inner wall of the rotating seat (17) and the pressure head (18) through a spring seat; a rotating tube (20) is fixedly inserted through the rotating seat (17), the top end of the rotating tube (20) is sealed and rotated to extend into the protective cover (6), the bottom end of the rotating tube (20) is fixedly connected to the airbag (19), and a transmission rod (31) is fixedly inserted in the rotating tube (20), the transmission rod (31) extends upward and is connected to the rotating disk (36).

5. A visual emergency radial artery compression hemostat according to claim 4, characterized in that, The bottom of the pressure head (18) is provided with multiple V-grooves (29) and multiple suction cups (30); when pressure is applied, the V-grooves (29) are used to guide the liquid on the skin surface to drain out, and the suction cups (30) are used to adhere to the skin surface to prevent lateral slippage.

6. A visual emergency radial artery compression hemostat according to claim 5, characterized in that, The protective cover (6) is provided with a reset circuit, which includes a U-shaped tube (38) and a one-way valve (39) located inside the U-shaped tube (38). Both ends of the U-shaped tube (38) are connected to the protective cover (6), and the two ends of the U-shaped tube (38) are located above and below the piston disc I (7), respectively. When the piston disc I (7) moves up and resets, the one-way valve (39) opens, allowing the silicone oil above to flow back to the bottom through the U-shaped tube (38).

7. A visual emergency radial artery compression hemostat according to claim 6, characterized in that, It also includes a cylinder (40) located on top of the fixed plate (1), the cylinder (40) being connected to the inner cavity of the protective cover (6) via a conduit (32), and the connection position being located below the piston disc I (7); a piston disc III (41) is slidably connected inside the cylinder (40), and a cylindrical helical spring III (42) is provided between the piston disc III (41) and the inner wall of the cylinder (40); the piston disc III (41) moves under the silicone oil pressure transmitted by the conduit (32), and its displacement is used to characterize the current pressure force.

8. A visual emergency radial artery compression hemostat according to claim 7, characterized in that, The cylinder (40) is made of transparent material and has scale markings on its outer wall for intuitive reading of the displacement of the piston disc III (41).

9. A visual emergency radial artery compression hemostat according to claim 8, characterized in that, The binding mechanism includes connecting plates (2) and straps (3) fixed on both sides of the fixing plate (1). The ends of the connecting plates (2) are hook-shaped, and the two ends of the straps (3) are fixed with connectors (4) that snap into the hook-shaped ends.

10. A method of using a visual emergency radial artery compression hemostat, applied to the visual emergency radial artery compression hemostat as described in claim 9, characterized in that, Includes the following steps: S1. Place the fixing plate (1) above the target pressure position, align the pressure head (18) with the pressure position, wrap the fixing part with the strap (3) and insert the connector (4) into the hook of the connecting plate (2) to complete the initial fixing; manually rotate the rotating head (11), and through the cooperation of the threaded ring (10) and the annular groove (12), the lifting plate (9) moves down and presses down the top of the fixing column (13). The piston plate (7) is driven down by the piston plate (14) and the rotating column (16), and the silicone oil below it is squeezed and injected into the air bag (19) through the rotating tube (20); the air bag (19) expands and pushes the pressure head (18) to overcome the tension spring (21) and move down to output the pressure force, while the cylindrical helical spring (15) is compressed and stored. S2. Under pressure, the piston disc II (14), rotating column (16) and piston disc I (7) are driven to move down by the thrust of the cylindrical helical spring I (15), so that the silicone oil slowly seeps to the top through the throttling hole (33) on the piston disc I (7), causing the piston disc I (7) and piston disc II (14) to slowly sink, and the thrust of the cylindrical helical spring I (15) decreases accordingly, thereby realizing that the pressure output by the pressure head (18) decreases linearly with time. S3. Rotate the rotating seat (17) as needed to drive the rotating tube (20), transmission rod (31), rotating column (16) and rotating disk (36) to rotate, so that the arc groove (37) pushes the pin (35) to move, and drives the sealing plate (34) to slide on the top of the piston disk I (7). The pressure reduction speed is adjusted by changing the blocking area of ​​the throttle hole (33). S4. When the fixed plate (1) is displaced by external forces, the cylindrical helical spring II (26) in the yielding mechanism (22) absorbs the displacement energy and coordinates the extension and retraction of the fixed cylinder (23) and the sliding rod (24) and the rolling of the ball head (25) to keep the protective cover (6) and the pressure head (18) stationary relative to the target pressure position. S5. During the compression process, the reaction force borne by the pressure head (18) is transmitted through the air bag (19), rotating tube (20), lower part of the protective cover (6), and silicone oil in the conduit (32) to the piston disc III (41) in the cylinder (40), which pushes it to compress the cylindrical helical spring III (42). The current compression pressure value is read by observing the transparent scale of the cylinder (40). S6. After the operation is completed, rotate the rotating head (11) in the opposite direction to move the lifting plate (9) upward, release the thrust on the fixed column (13), and the tension spring (21) drives the pressure head (18) to move upward and reset; the silicone oil in the airbag (19) flows back to the protective cover (6) to drive the piston plate I (7) and the fixed column (13) to move upward, and the silicone oil above the piston plate I (7) returns to the bottom through the U-tube (38) and the one-way valve (39) to complete the device reset.

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