Interventional department compression hemostasis auxiliary device

Abstract

The present application relates to the technical field of medical devices, in particular to an intervention department compression hemostasis auxiliary device, which comprises a fixed plate and a compression head. The compression head is made of flexible material. The fixed plate is provided with a fixed mechanism for clamping a limb, an extrusion mechanism for driving the compression head to perform compression hemostasis, and a pressure increasing mechanism for increasing the pressure of the compression head. The fixed mechanism is used to drive the extrusion mechanism and the pressure increasing mechanism to operate synchronously. During the action of clamping the limb by the fixed mechanism, the extrusion mechanism is synchronously driven to perform initial compression on the puncture point, and the pressure increasing mechanism is synchronously driven to deliver medium into the compression head to increase the pressure of the compression head. The present application is used to improve the safety, effectiveness and convenience of post-intervention puncture point hemostasis.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an interventional hemostasis auxiliary device. Background Technology

[0002] Interventional procedures (such as coronary angiography and stent implantation) have become an important means of clinical treatment for cardiovascular diseases due to their advantages of minimal invasiveness and rapid recovery. However, interventional procedures usually require establishing vascular access through the femoral or radial artery, and hemostasis and compression at the puncture site after the procedure are crucial to preventing complications (such as subcutaneous hematoma, pseudoaneurysm, and arteriovenous fistula). Currently, commonly used compression hemostasis methods in clinical practice mainly include manual pressure and mechanical compression hemostatic devices.

[0003] Traditional manual pressure hemostasis relies primarily on medical personnel applying continuous pressure directly to the puncture site. This method has significant drawbacks; manual pressure is not only time-consuming and laborious but can also lead to bleeding and hematoma due to improper operation. To address the shortcomings of manual pressure, various compression hemostasis devices have emerged on the market. Compared to manual pressure, the application of hemostasis devices can shorten the bed rest time of patients after interventional procedures and shows advantages in reducing the incidence of complications such as hematoma and radial artery occlusion. However, existing compression hemostasis devices still have some technical shortcomings. The operation of existing devices often involves multiple independent steps, such as limb fixation, application of hemostatic pressure, and adjustment of pressure intensity, which need to be completed step by step. The operation process is relatively cumbersome and requires a high level of proficiency from medical personnel, posing certain inconveniences in the fast-paced environment of interventional surgery. In addition, some balloon-type hemostasis devices require an external air source or manual inflation, have complex structures, and exhibit lag in pressure adjustment; while spiral mechanical hemostatic devices, although simple in structure, are prone to displacement during continuous pressure due to wrist movement or changes in body position, affecting the accuracy of the compression position.

[0004] Therefore, this invention proposes an auxiliary device for compression hemostasis in interventional procedures to further improve the safety, effectiveness, and convenience of hemostasis at the puncture site after interventional procedures. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides an interventional hemostasis support device to improve the safety, effectiveness, and convenience of hemostasis at the puncture site after interventional procedures.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: an interventional hemostasis auxiliary device, comprising a fixing plate and a compression head, wherein the fixing plate is provided with a fixing mechanism for clamping the limb, a squeezing mechanism for driving the compression head to perform compression hemostasis, and a pressurizing mechanism for increasing the pressure of the compression head.

[0007] The fixing mechanism is used to drive the compression mechanism and the pressurizing mechanism to operate synchronously. During the action of the fixing mechanism clamping the limb, it synchronously drives the compression mechanism to apply initial pressure to the puncture point, and synchronously drives the pressurizing mechanism to deliver the medium into the compression head to increase the pressure of the compression head.

[0008] The technical principles of the above solution are as follows:

[0009] When the fixation mechanism clamps the limb, its relative movement drives the compression mechanism and the pressurization mechanism simultaneously through the transmission chain. When the fixation mechanism closes inward, on the one hand, the compression mechanism drives the compression head to vertically press against the puncture point, generating initial pressure; on the other hand, the movement of the fixation mechanism synchronously drives the pressurization mechanism to inject the medium into the interior of the flexible compression head, causing it to expand and increase pressure, thereby achieving a secondary enhancement of the blood pressure-stopping force.

[0010] The above approach has the following beneficial effects:

[0011] 1. This solution achieves simultaneous execution of a single action—limb clamping and hemostasis pressure application—through the linkage of the fixation mechanism, compression mechanism, and pressurization mechanism. Medical personnel only need to operate the fixation mechanism to close it, which automatically triggers two hemostasis steps: the initial pressure application of the compression head and subsequent media pressurization. This integrated linkage design simplifies the operation process, reduces operational complexity, and is suitable for emergency treatment or interventional surgery scenarios, reducing the risk of hemostasis failure due to omissions or incorrect sequences of operation steps.

[0012] 2. This solution uses a compression head made of flexible material, and a medium is injected into it simultaneously during clamping to achieve gradual pressure increase, allowing the compression head to conform to the irregular tissue surface around the puncture point. Compared to a rigid compression head, the flexible, expanded compression head has a larger contact area with the skin and a more uniform pressure distribution, avoiding excessively high local pressure peaks and reducing the probability of pressure sores. At the same time, the medium-filled flexible compression head has a certain deformation buffering capacity, allowing the compression head to adjust to different shapes and maintain contact stability.

[0013] 3. This solution integrates the drive source of the pressurization mechanism into the clamping action of the fixing mechanism, utilizing the relative motion of the fixing mechanism as the power input, eliminating the need for an additional independent power source (such as a motor or air pump) or energy supply. The pressurization mechanism adopts a mechanical structure, completing the intake and discharge of the medium through displacement, delivering the medium to the flexible compression head to achieve pressurization; it has a compact structure, low maintenance cost, and is easy to deploy and reuse flexibly in various interventional operating rooms or bedside environments.

[0014] Furthermore, the fixing mechanism includes clamping arms that are symmetrically slidably fitted onto a fixing plate, and the fixing plate has a sliding groove for the clamping arms to slide; a linkage lever is rotatably fitted in the middle of the fixing plate, and connecting rods are symmetrically hinged to the bottom of the linkage lever, with the ends of the connecting rods away from the linkage levers being hinged to adjacent clamping arms, and flexible layers are fixedly connected to each clamping arm; a driving component is also fixedly connected to the bottom of the fixing plate, and the driving component is signal-connected to a controller, with the output shaft of the driving component fixedly connected to the middle of the linkage lever.

[0015] Beneficial effects: The clamping action is converted into rotational motion through the linkage mechanism. When the drive component drives the lever to rotate, the clamping arms on both sides retract synchronously to achieve fixation. At the same time, the linkage structure triggers subsequent squeezing and pressurizing actions; it realizes the integrated mechanical linkage of clamping, squeezing and pressurizing, which is easy to operate and has high synchronization of actions.

[0016] Furthermore, the extrusion mechanism includes a mounting plate rotatably fitted to the top of the fixed plate, with an opening on the mounting plate for the clamping arm to slide; a sleeve is fixedly connected to the middle of the mounting plate, a rotating cylinder is rotatably fitted to the inner wall of the sleeve, and an extrusion plate is slidably fitted to the inner wall of the rotating cylinder; a spring abuts against the top of the extrusion plate, with the end of the spring away from the extrusion plate abutting against the pressing head, and the pressing head slidingly fitted to the inner wall of the sleeve; a fixing block is also fixedly connected to the top of the sleeve, and a limiting block that contacts the fixing block is fixedly connected to the outer wall of the pressing head; a lifting assembly for driving the extrusion plate to rise is provided inside the sleeve.

[0017] Beneficial effects: The lifting assembly drives the compression plate, and the vertical pressure is transmitted to the flexible compression head through spring buffering, achieving initial compression at the puncture point. The limiting block and fixing block work together to limit the stroke and prevent overpressure damage, converting mechanical transmission into stable and controllable axial thrust, ensuring uniform and adjustable compression force to adapt to patients of different body types, and improving hemostasis safety and comfort.

[0018] Furthermore, the lifting assembly includes several clamping rods fixedly connected to the outer wall of the extrusion plate in a circumferential direction; several spiral grooves are opened in the inner wall of the sleeve in a circumferential direction, and several vertical grooves are opened in the side wall of the rotating drum in a circumferential direction; the clamping rods all pass through the vertical grooves and are all slidably engaged with the spiral grooves; a connecting shaft is fixedly connected to the top of the linkage lever, and the end of the connecting shaft away from the linkage lever is fixedly connected to the bottom of the rotating drum.

[0019] Beneficial effects: By utilizing the sliding engagement of the spiral groove and the clamping rod, the rotational motion of the linkage lever is converted into the linear lifting motion of the extrusion plate. When the clamping action drives the rotating drum to rotate, the clamping rod slides along the spiral groove trajectory, causing the extrusion plate to rise. This structure ensures synchronization between the initial pressure and the clamping action, improving the device's response speed and reliability.

[0020] Furthermore, the pressurizing mechanism includes a transmission cylinder fixedly connected to a fixed plate, a first piston slidably fitted on the inner wall of the transmission cylinder, a first transmission rod fixedly connected to the first piston, and the end of the first transmission rod away from the first piston fixedly connected to the outer wall of the clamping arm; an input pipe and an output pipe are connected to the side of the transmission cylinder away from the first transmission rod, and a one-way valve is provided on the communication path between the input pipe and the output pipe and the transmission cylinder; the input pipe is connected to the outside of the transmission cylinder, and the end of the output pipe away from the transmission cylinder is connected to the inside of the pressure head.

[0021] Beneficial effects: The inward retraction of the clamping arm drives the first piston, converting mechanical displacement into hydraulic energy. The one-way valve ensures unidirectional fluid flow, allowing external liquid to be drawn in, pressurized, and injected into the air bladder inside the compression head, improving compression force and stability. The pressure is also adaptively adjustable, preventing hematoma recurrence and avoiding excessive compression that could damage blood vessels.

[0022] Furthermore, the fixing plate is also provided with a fitting mechanism for fitting the surface of the limb; the fitting mechanism includes a conveying cylinder fixedly connected to the fixing plate, a second piston slidably fitted on the inner wall of the conveying cylinder, a second transmission rod fixedly connected on the second piston, and the end of the second transmission rod away from the second piston being fixedly connected to the outer wall of the clamping arm away from the first transmission rod; a conveying pipe is connected to the side of the conveying cylinder away from the second transmission rod, and the end of the conveying pipe away from the conveying cylinder is connected to the interior of the flexible layer.

[0023] Beneficial effects: The movement of the clamping arm drives the second piston, which delivers the medium inside the flexible layer to the fitting mechanism, making it fit tightly to the curved surface of the limb. This not only improves wearing comfort and sealing, but also prevents slippage and ensures stable and reliable hemostasis. It is suitable for irregular body surface areas.

[0024] Furthermore, a braking component is fixedly connected to the bottom of the fixed plate, and the controller is signal-connected to the braking component; a friction plate is fixedly connected to the output shaft of the braking component, and the friction plate contacts the outer wall of the output shaft of the driving component.

[0025] Beneficial effects: By controlling the braking components through the controller, controllable friction is generated by the contact between the friction plate and the outer wall of the drive shaft, thereby locking or stopping the rotation angle of the drive mechanism; preventing the clamping arm from rebounding or accidentally loosening during the compression process, ensuring a continuous and stable output of pressure-relieving force, and improving the convenience and safety of operation.

[0026] Furthermore, a pressure sensor is fixedly connected to the outer wall of the compression head, and a display screen is fixedly connected to the outer wall of the fixing plate; the controller is used to acquire the pressure signal output by the pressure sensor and send the pressure signal to the display screen for display.

[0027] Beneficial effects: By integrating a pressure sensor and a display screen, the controller can collect the actual pressure data applied to the limb by the compression head in real time and display it intuitively on the screen, enabling medical staff to grasp the compression intensity and improve the safety and accuracy of the operation.

[0028] Furthermore, the controller is also connected to a timing unit, which is used to set the pressure time of the pressurizing mechanism according to the pressure requirements; the pressure head is connected to a pressure relief valve, and the controller controls the opening and closing of the pressure relief valve based on the preset pressure time.

[0029] Beneficial effects: By integrating a timing unit and a pressure relief valve, the time management of the compression therapy process is automated; the controller controls the opening and closing of the pressure relief valve according to the preset time, automatically ending the high pressure compression state and releasing the pressure, reducing the risk of complications such as limb ischemia and nerve damage caused by prolonged continuous compression.

[0030] Furthermore, the controller is also used to control the operation of the drive and brake components based on the pressure signal, compare the pressure signal with a preset threshold, and release the pressure head's hemostasis action by controlling the operation of the drive and brake components when the pressure signal exceeds the preset threshold, and increase the pressure of the pressure head by controlling the operation of the drive and brake components when the pressure signal is below the preset threshold.

[0031] Beneficial effects: Closed-loop control enables adaptive pressure adjustment, automatically reducing pressure to prevent damage in cases of overpressure and automatically increasing pressure to maintain therapeutic efficacy in cases of underpressure; it avoids human error, reduces the burden on medical staff, and improves the safety and accuracy of hemostasis. Attached Figure Description

[0032] Figure 1 This is an isometric view of the interventional hemostasis auxiliary device of the present invention.

[0033] Figure 2 For the present invention Figure 1 The side sectional view in the middle.

[0034] Figure 3 For the present invention Figure 1 Axonometric drawing of the fixed mechanism.

[0035] Figure 4 For the present invention Figure 2 A partial sectional view of the transfer cylinder.

[0036] Figure 5 For the present invention Figure 4 A partial sectional view of the middle sleeve.

[0037] The reference numerals in the accompanying drawings of the instruction manual include: 1. Fixing plate; 2. Pressing head; 3. Clamping arm; 4. Linkage lever; 5. Connecting rod; 6. Flexible layer; 7. Driving component; 8. Mounting plate; 9. Sleeve; 10. Rotary drum; 11. Extrusion plate; 12. Spring; 13. Clamping rod; 14. Transmission cylinder; 15. First transmission rod; 16. Conveying cylinder; 17. Second transmission rod; 18. Braking component; 19. Friction plate; 20. Display screen. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The following detailed description illustrates the specific implementation method:

[0042] Example 1:

[0043] As attached Figures 1-5 As shown: An interventional hemostasis auxiliary device includes a fixing plate 1 and a compression head 2. The compression head 2 is made of flexible material, and in this embodiment, medical silicone or medical rubber is selected. The fixing plate 1 is provided with a fixing mechanism for clamping the limb, a squeezing mechanism for driving the compression head 2 to perform compression hemostasis, and a pressurizing mechanism for increasing the pressure of the compression head 2.

[0044] The fixing mechanism is used to drive the squeezing mechanism and the pressurizing mechanism to operate synchronously. During the action of the fixing mechanism clamping the limb, it synchronously drives the squeezing mechanism to apply initial pressure to the puncture point, and synchronously drives the pressurizing mechanism to deliver the medium into the compression head 2 to increase the pressure of the compression head 2.

[0045] Combination Figure 2 and Figure 3As shown, the fixing mechanism includes clamping arms 3 symmetrically sliding on a fixing plate 1. The fixing plate 1 has a sliding groove for the clamping arms 3 to slide, providing guidance and ensuring the clamping arms 3 maintain a linear motion trajectory around the length of the fixing plate. A linkage lever 4 is rotatably fitted in the middle of the fixing plate 1. Connecting rods 5 are symmetrically hinged to the bottom of the linkage lever 4. The ends of the connecting rods 5 away from the linkage lever 4 are hinged to adjacent clamping arms 3. A flexible layer 6 is fixedly bonded to each clamping arm 3. In this embodiment, the flexible layer 6 is made of medical-grade silicone or medical-grade rubber. A driving component 7 is also fixedly connected to the bottom of the fixing plate 1 by bolts. The driving component 7 is signal-connected to a controller, and the output shaft of the driving component 7 is fixedly connected to the middle of the linkage lever 4 by screws. In this embodiment, the driving component 7 is a servo motor, and the controller is a microcontroller.

[0046] Specifically, after receiving the start command, the controller (microcontroller) outputs a control signal to the drive unit 7 (servo motor). The output shaft of the servo motor begins to rotate in a preset direction. Since the output shaft of the drive unit 7 is connected to the middle of the linkage lever 4, it drives the rotation center of the linkage lever 4 to rotate synchronously. Two connecting rods 5 are symmetrically hinged at the bottom of the linkage lever 4. When the linkage lever 4 rotates, the two connecting rods 5 move with the swing of the linkage lever 4. The end of the connecting rod 5 that is hinged to the clamping arm 3 converts the rotational motion into a linear thrust or pull force. Since the clamping arm 3 is slidably fitted in the groove opened on the fixed plate 1, the groove provides linear guidance for the clamping arm 3, restricting it to move only along the direction of the groove. Therefore, the two clamping arms 3 slide towards each other along the groove under the drive of the connecting rods 5 (i.e., move closer to each other).

[0047] As the clamping arms 3 close towards the center, the flexible layer 6 (medical-grade silicone or medical-grade rubber) fixedly bonded to its inner wall first contacts both sides of the limb. Under the continuous torque output of the servo motor, the clamping arms 3 continue to apply clamping force, causing the flexible layer 6 to undergo elastic deformation, evenly wrapping the surface of the limb, achieving stable and comfortable clamping fixation. When release is needed, the controller instructs the servo motor to rotate in the opposite direction, the linkage lever 4 rotates in the opposite direction, and the connecting rod 5 pushes the two clamping arms 3 to slide backward (away from each other), the flexible layer 6 detaches from the limb, and the release is completed. Throughout the entire movement, the controller can adjust the rotation angle and speed of the motor, thereby controlling the displacement distance and clamping force of the clamping arms 3, achieving smooth and controllable automated clamping action.

[0048] Combination Figure 4 and Figure 5As shown, the extrusion mechanism includes a mounting plate 8 rotatably fitted to the top of a fixed plate 1, with an opening on the mounting plate 8 for the clamping arm 3 to slide. The mounting plate 8 provides space for the rotation of the linkage lever 4 and the connecting rod 5, allowing them to rotate. A sleeve 9 is bolted to the middle of the mounting plate 8, with a rotating cylinder 10 rotatably fitted to the inner wall of the sleeve 9, and an extrusion plate 11 slidably fitted to the inner wall of the rotating cylinder 10. A spring 12 abuts against the top of the extrusion plate 11, with one end of the spring 12 away from the extrusion plate 11 abutting against the pressure head 2, which slidably fits against the inner wall of the sleeve 9. A fixing block is integrally formed on the top of the sleeve 9, and a limiting block that contacts the fixing block is fixedly bonded to the outer wall of the pressure head 2. A lifting assembly for lifting the extrusion plate 11 is provided inside the sleeve 9. In this embodiment, a rigid plate is integrated at the bottom of the pressure head 2, and a flexible material is integrated on the top of the rigid plate, allowing the extrusion force of the spring 12 to move the pressure head 2. The limiting blocks are all integrated on the rigid plate.

[0049] The lifting assembly includes several locking rods 13 integrally formed on the outer wall of the extrusion plate 11; several spiral grooves are opened on the inner wall of the sleeve 9, and several vertical grooves are opened on the side wall of the rotating cylinder 10; the locking rods 13 all pass through the vertical grooves and slide with the spiral grooves; the top of the linkage lever 4 is fixedly connected to the connecting shaft by screws, and the end of the connecting shaft away from the linkage lever 4 is fixedly connected to the bottom of the rotating cylinder 10 by screws.

[0050] Specifically, when the drive unit 7 (servo motor) drives the linkage lever 4 to rotate, the connecting shaft at the top of the linkage lever 4 rotates synchronously. The connecting shaft is connected to the bottom of the rotating drum 10, so the rotating drum 10 rotates along the inner wall of the sleeve 9. A vertical groove is provided on the side wall of the rotating drum 10, and the locking rod 13 on the outer wall of the extrusion plate 11 passes through the vertical groove and is simultaneously embedded in the spiral groove on the inner wall of the sleeve 9. When the rotating drum 10 rotates, the vertical groove rotates accordingly and pushes the locking rod 13 to move along the trajectory of the spiral groove. Since the spiral groove has an inclined helix angle, the locking rod 13 moves up or down along the spiral groove (depending on the direction of rotation) while moving circumferentially with the rotating drum 10. The locking rod 13 pushes the extrusion plate 11 to slide inside the sleeve 9, so the extrusion plate 11 will make linear up-and-down motion under the constraint of the inner wall of the sleeve 9.

[0051] In this embodiment, when the clamping arm 3 closes towards the center, the rotation direction of the linkage lever 4 is set to drive the locking lever 13 to slide along the helix angle of the spiral groove, thereby causing the extrusion plate 11 to rise. During the rise of the extrusion plate 11, the spring 12 abutting its top is gradually compressed. The spring 12 transmits the compressive force to the compression head 2, causing the compression head 2 to move towards the puncture point. When the limiting block on the outer wall of the compression head 2 contacts the fixing block on the top of the sleeve 9, it limits the maximum extension position of the compression head 2, preventing excessive compression.

[0052] As the compression of spring 12 increases, the initial pressure of the compression head 2 on the puncture point gradually increases. When the clamping arm 3 completes clamping and fixation, the compression plate 11 stops rising, and spring 12 maintains a certain compression state, providing continuous initial pressure. At the same time, due to the elasticity of spring 12, when the patient's limb moves slightly, the compression head 2 can adaptively retract or extend forward, maintaining a relatively constant pressure. When it is necessary to release the pressure, the drive component 7 rotates in the opposite direction, the linkage lever 4 drives the rotating cylinder 10 to rotate in the opposite direction, the locking lever 13 moves downward along the spiral groove, the compression plate 11 descends, the compression of spring 12 decreases, and the compression head 2 retracts, disengaging from the puncture point.

[0053] Existing compression hemostasis devices are typically operated independently. The device is first fixed to the limb, and then hemostatic pressure is applied independently via a knob or airbag. These two actions are separate and require individual adjustment. In this solution, clamping and compression are synchronously driven by the same drive unit 7 and the same linkage lever 4, completing both functions in a single action. Simultaneously, the spring 12, positioned between the compression plate 11 and the compression head 2, both transmits pressure and provides elastic cushioning. Combined with the flexible compression head 2, it adapts to tissue deformation, ensuring continuous pressure required for hemostasis while avoiding the risk of excessive pressure due to limb swelling or operational errors.

[0054] like Figure 3 As shown, the pressurizing mechanism includes a transmission cylinder 14 fixedly connected to the fixed plate 1 by bolts. A first piston is slidably fitted on the inner wall of the transmission cylinder 14. A first transmission rod 15 is fixedly connected to the first piston by screws. The end of the first transmission rod 15 away from the first piston is fixedly connected to the outer wall of the clamping arm 3 by screws. An input pipe and an output pipe are connected to the side of the transmission cylinder 14 away from the first transmission rod 15. One-way valves are provided on the communication paths between the input pipe and the output pipe and the transmission cylinder 14. The one-way valves are used to provide one-way flow, so that the medium flows in from the input pipe and then flows out through the output pipe. The input pipe is connected to the outside of the transmission cylinder 14, and the end of the output pipe away from the transmission cylinder 14 is connected to the inside of the pressure head 2.

[0055] Specifically, when the driving component 7 moves the clamping arm 3 along the slide groove, the pressurizing mechanism is driven synchronously. The outer wall of the clamping arm 3 is fixedly connected to the first transmission rod 15 by screws, and the other end of the first transmission rod 15 is fixedly connected to the first piston inside the transmission cylinder 14. Therefore, the linear movement of the clamping arm 3 directly drives the first transmission rod 15 to move, thereby pushing the first piston to slide on the inner wall of the transmission cylinder 14.

[0056] When the clamping arm 3 opens, the first transmission rod 15 pulls the first piston towards the interior of the transmission cylinder 14 (i.e., the first piston moves away from the input and output pipes). At this time, the volume of the cavity in front of the first piston within the transmission cylinder 14 increases, creating a negative pressure. Under the action of the negative pressure, the one-way valve on the input pipe opens, and external media (such as air) is drawn into the transmission cylinder 14 through the input pipe. Simultaneously, the one-way valve on the output pipe remains closed under the action of the negative pressure to prevent the backflow of the media that has entered the pressure head 2.

[0057] When the clamping arm 3 closes, the first transmission rod 15 pushes the first piston in the opposite direction, compressing the cavity volume inside the transmission cylinder 14. At this time, the pressure inside the transmission cylinder 14 increases, the one-way valve on the output pipe opens, and the medium is transported into the pressure head 2 made of flexible material. Simultaneously, the one-way valve on the input pipe closes to prevent the medium from leaking from the input pipe.

[0058] Existing technologies typically require manual squeezing of the independent airbag or use of an external air source (such as a syringe or air pump) for inflation, separating the pressurization and fixation actions. This solution utilizes the movement of the clamping arm 3 as power, driving both the pressurization and fixation actions with the same mechanical motion, reducing operational steps and increasing ease of use. Furthermore, the tighter the clamping arm 3 grips, the deeper the first piston advances, resulting in greater fluid pressure for the compression head 2, achieving simultaneous fixation and flexible compression.

[0059] Example 2:

[0060] As attached Figure 3 As shown, the difference from Embodiment 1 is that the fixing plate 1 is also provided with a fitting mechanism for fitting the surface of the limb; the fitting mechanism includes a conveying cylinder 16 fixedly connected to the fixing plate 1 by bolts, a second piston slidingly fitted on the inner wall of the conveying cylinder 16, a second transmission rod 17 fixedly connected to the second piston by screws, and the end of the second transmission rod 17 away from the second piston being fixedly connected to the outer wall of the clamping arm 3 away from the first transmission rod 15 by screws; a conveying pipe is connected to the side of the conveying cylinder 16 away from the second transmission rod 17, and the end of the conveying pipe away from the conveying cylinder 16 is connected to the interior of the flexible layer 6.

[0061] The specific implementation process is as follows: When the clamping arms 3 on both sides slide inward along the groove (performing a clamping action), since one end of the second transmission rod 17 is connected to the outer wall of the clamping arm 3 on the side away from the first transmission rod 15 by a screw, the linear movement of the clamping arm 3 will directly drive the second transmission rod 17 to synchronously advance into the conveying cylinder 16. As the clamping arms 3 tighten inward, the second transmission rod 17 pushes the second piston to slide inside the conveying cylinder 16. The sealed volume inside the conveying cylinder 16 decreases, and the pressure of the internal medium (such as hydraulic oil or gas) increases. The pressurized medium is then pushed into the internal cavity of the flexible layer 6 through the conveying pipe.

[0062] The medium entering the flexible layer 6 causes it to expand elastically. Due to its biocompatibility and deformability, the expanded flexible layer 6 fills the microscopic gaps between the clamping arm 3 and the skin, as well as the skin's texture depressions, forming a tight fit. When the clamping arm 3 stops moving and remains in the clamping position, the second piston also stops, the pressure inside the delivery cylinder 16 remains balanced, and the flexible layer 6 maintains its expanded state, continuously providing a uniform adhesion force.

[0063] When the adhesion needs to be released, the drive component 7 reverses, and the clamping arms 3 move away from each other (moving away from each other). The clamping arms 3 move outward, driving the second piston to retract away from the delivery pipe, creating a negative pressure inside the delivery cylinder 16. At this time, the medium inside the flexible layer 6 is drawn back into the delivery cylinder 16 through the delivery pipe, and the flexible layer 6 contracts to restore its original shape and detaches from the limb surface.

[0064] In this device, the movement of the two clamping arms 3 simultaneously drives multiple different actuators. The right clamping arm 3 drives the pressurization mechanism to pump the medium into the compression head 2, while the left clamping arm 3 drives the bonding mechanism to pump the medium into the flexible layer 6. The closing action of the clamping arms 3 themselves is driven by the linkage lever 4 and the connecting rod 5. Therefore, this clamping action simultaneously achieves multiple functions such as limb fixation, expansion and bonding of the flexible layer 6, and injection of the medium into the compression head 2, improving the practicality of the device.

[0065] Example 3:

[0066] As attached Figure 2 As shown, the difference from Embodiment 2 is that the bottom of the fixing plate 1 is also fixedly connected to the brake component 18 by bolts, and the controller is connected to the brake component 18 by signal; the output shaft of the brake component 18 is fixedly connected to the friction plate 19 by screws, and the friction plate 19 is in contact with the outer wall of the output shaft of the drive component 7. In this embodiment, the brake component 18 is a friction brake.

[0067] The specific implementation process is as follows: After the clamping arm 3 closes to the preset clamping position and completes the fixation and hemostasis of the limb, the controller outputs a start signal to the brake 18. Upon receiving the signal, the brake 18 actuates, and its output shaft drives the friction plate 19 to apply pressure to the output shaft of the drive 7, causing the friction plate 19 to fit tightly against the outer wall of the output shaft. The friction torque locks the output shaft of the drive 7, preventing it from rotating passively. At this time, even if the drive 7 itself is de-energized or subjected to external vibrations, slight limb movements, or other disturbances, the position of the clamping arm 3 can be stably maintained, ensuring continuous hemostasis pressure.

[0068] When it is necessary to release hemostasis or adjust the position of the device, the controller first issues a command to release the brake 18, causing the friction plate 19 to disengage from the output shaft of the drive 7, thus releasing the brake. Then, the controller controls the drive 7 to rotate in the opposite direction, causing the clamping arm 3 to move backward to release the limb. This braking mechanism reduces the risk of accidental contact causing the clamp to loosen and leading to hemostasis failure. At the same time, since the braking action is automatically executed by the controller, no manual intervention is required, further improving the automation level and operational reliability of the device.

[0069] Example 4:

[0070] The difference from Embodiment 3 is that a pressure sensor is also fixedly bonded to the outer wall of the compression head 2, and a display screen 20 is embedded in the outer wall of the fixing plate 1; the controller is used to acquire the pressure signal output by the pressure sensor and send the pressure signal to the display screen 20 for display.

[0071] The specific implementation process is as follows: When the compression head 2 applies pressure to the puncture point for hemostasis under the combined action of the squeezing mechanism and the pressurizing mechanism, the pressure sensor collects the pressure signal in real time and converts it into an electrical signal, which is then transmitted to the controller. After receiving the signal, the controller performs internal analog-to-digital conversion and data processing, and displays the real-time pressure value digitally on the display screen 20 embedded in the outer wall of the fixing plate 1. During the device startup and clamping arm 3 closing process, medical personnel can observe the changes in pressure value on the display screen 20 to intuitively understand the real-time pressure status of the compression head 2 on the puncture point, and can determine whether the device needs to be adjusted accordingly.

[0072] Example 5:

[0073] The difference from Embodiment 4 is that the controller is also connected to a timing unit, which is used to set the compression time of the pressurizing mechanism; the pressure head 2 is connected to a pressure relief valve, and the controller controls the opening and closing of the pressure relief valve based on the preset compression time. In this embodiment, the compression time is compared after it is fixed.

[0074] The specific implementation process is as follows: The controller is connected to a timing unit, and medical staff can set the compression time through the timing unit according to clinical needs (e.g., continuous compression for 60 minutes after femoral artery puncture). This timing unit can be a button embedded in the fixing plate 1 or a touch interface integrated with the display screen 20. After setting, the controller records the preset time and starts timing; when the timing reaches the preset compression duration (e.g., 60 minutes), the controller outputs an opening signal to the pressure relief valve connected to the inside of the compression head 2, releasing the medium (air in this embodiment) inside the flexible compression head 2 to the external environment. As the medium is discharged, the pressure inside the compression head 2 gradually decreases, and the pressure on the puncture point weakens accordingly.

[0075] During the depressurization process, if it is necessary to temporarily interrupt the depressurization or repressurize (e.g., if bleeding is still detected), medical staff can instruct the controller via the operating interface to close the depressurization valve and restart the drive unit 7 to drive the pressurization mechanism to replenish the medium. The opening sequence of the depressurization valve is determined by the preset time of the timing unit, realizing automated management of the compression duration and improving the standardization and reliability of the hemostasis process.

[0076] Example 6:

[0077] The difference from Embodiment 5 is that the controller is also used to control the operation of the drive unit 7 and the brake unit 18 based on the pressure signal, compare the pressure signal with a preset threshold, and release the pressing and hemostatic action of the compression head 2 by controlling the operation of the drive unit 7 and the brake unit 18 when the pressure signal exceeds the preset threshold, and increase the pressing force of the compression head 2 by controlling the operation of the drive unit 7 and the brake unit 18 when the pressure signal is lower than the preset threshold.

[0078] The specific implementation process is as follows: The controller acquires the pressure signal output by the pressure sensor in real time and compares it with the internally preset pressure thresholds (including the upper safety threshold and the lower effective hemostasis threshold). When the pressure signal exceeds the preset upper safety threshold (for example, due to swelling of the patient's limb or accidental displacement of the device causing a sharp increase in pressure), the controller sends a release signal to the brake 18, causing the friction plate 19 to disengage from the output shaft of the drive 7, thus releasing the braking state; subsequently, the controller outputs a reverse rotation command to the drive 7, which drives the linkage lever 4 to rotate in the opposite direction, causing the clamping arm 3 to move a small distance in the opposite direction through the connecting rod 5, so that the compression head 2 gradually moves away from the puncture point. During this process, the pressure sensor provides real-time feedback on the pressure value. When the pressure drops back to within the safety threshold and reaches the effective hemostasis range, the controller sends a command to stop the reverse rotation of the drive 7 and restarts the brake 18 to lock the output shaft of the drive 7, completing the release of the pressure exceeding the limit.

[0079] When the pressure signal is detected to be lower than the preset effective hemostasis threshold (e.g., due to patient limb movement, tissue atrophy, or slow leakage of media causing a decrease in pressure), the controller first releases the brake 18, then controls the drive 7 to further close the clamping arm 3. At the same time, the connecting shaft drives the rotating drum 10 to rotate, and the compression plate 11 compresses the spring 12 to increase the initial pressure. Furthermore, the closing movement of the clamping arm 3 will push the first piston of the pressure boosting mechanism through the first transmission rod 15, pumping the media into the flexible compression head 2 to achieve pressure compensation and boost.

[0080] In this embodiment, the controller employs a proportional or intermittent control strategy: it pauses and reads the pressure sensor feedback after each minute increase in angle; if the pressure remains below the threshold, it continues to increase until the pressure returns to the effective hemostasis range. Once the pressure reaches the target, the controller instructs the brake 18 to lock the output shaft of the drive 7, maintaining the current pressure.

[0081] The above adjustment process can be repeated multiple times to keep the pressure of the compression head 2 within the set safe and effective range. This automatic adjustment mechanism based on pressure feedback enables the device to have intelligent adaptive hemostasis capabilities, solving the problem of pressure fluctuation caused by tissue swelling or shrinkage in traditional hemostatic devices, while avoiding the tediousness and uncertainty of repeated manual adjustments.

[0082] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An interventional hemostasis auxiliary device, comprising a fixing plate (1) and a compression head (2), characterized in that, The fixing plate (1) is provided with a fixing mechanism for clamping the limb, a squeezing mechanism for driving the compression head (2) to compress and stop bleeding, and a pressure boosting mechanism for increasing the pressure of the compression head (2); The fixing mechanism is used to drive the squeezing mechanism and the pressurizing mechanism to operate synchronously. During the action of the fixing mechanism clamping the limb, it synchronously drives the squeezing mechanism to apply initial pressure to the puncture point, and synchronously drives the pressurizing mechanism to deliver the medium into the compression head (2) to increase the pressure of the compression head (2).

2. The interventional hemostasis auxiliary device according to claim 1, characterized in that, The fixing mechanism includes a clamping arm (3) symmetrically sliding on a fixing plate (1), and a sliding groove for the clamping arm (3) to slide on the fixing plate (1); a linkage lever (4) is rotatably fitted in the middle of the fixing plate (1), and a connecting rod (5) is symmetrically hinged at the bottom of the linkage lever (4). The end of the connecting rod (5) away from the linkage lever (4) is hinged to the adjacent clamping arm (3), and a flexible layer (6) is fixedly connected to each clamping arm (3); a driving component (7) is also fixedly connected to the bottom of the fixing plate (1), and the driving component (7) is signal connected to a controller. The output shaft of the driving component (7) is fixedly connected to the middle of the linkage lever (4).

3. The interventional hemostasis auxiliary device according to claim 2, characterized in that, The extrusion mechanism includes a mounting plate (8) rotatably fitted to the top of a fixed plate (1), and an opening on the mounting plate (8) for the clamping arm (3) to slide. A sleeve (9) is fixedly connected to the middle of the mounting plate (8), and a rotating cylinder (10) is rotatably fitted to the inner wall of the sleeve (9). An extrusion plate (11) is slidably fitted to the inner wall of the rotating cylinder (10). A spring (12) abuts against the top of the extrusion plate (11), and the end of the spring (12) away from the extrusion plate (11) abuts against the pressure head (2). The pressure head (2) is slidably fitted to the inner wall of the sleeve (9). A fixing block is also fixedly connected to the top of the sleeve (9), and a limiting block that contacts the fixing block is fixedly connected to the outer wall of the pressure head (2). A lifting assembly for driving the extrusion plate (11) to lift is provided inside the sleeve (9).

4. The interventional hemostasis auxiliary device according to claim 3, characterized in that, The lifting assembly includes several clamps (13) fixedly connected to the outer wall of the extrusion plate (11); several spiral grooves are opened in the inner wall of the sleeve (9) and several vertical grooves are opened in the side wall of the rotating drum (10); the clamps (13) all pass through the vertical grooves and slide with the spiral grooves; the top of the linkage lever (4) is fixedly connected to a connecting shaft, and the end of the connecting shaft away from the linkage lever (4) is fixedly connected to the bottom of the rotating drum (10).

5. The interventional hemostasis auxiliary device according to claim 4, characterized in that, The pressurizing mechanism includes a transmission cylinder (14) fixedly connected to a fixed plate (1). A first piston is slidably fitted on the inner wall of the transmission cylinder (14). A first transmission rod (15) is fixedly connected to the first piston. The end of the first transmission rod (15) away from the first piston is fixedly connected to the outer wall of the clamping arm (3). An input pipe and an output pipe are connected to the side of the transmission cylinder (14) away from the first transmission rod (15). A one-way valve is provided on the connection path between the input pipe and the output pipe and the transmission cylinder (14). The input pipe is connected to the outside of the transmission cylinder (14), and the end of the output pipe away from the transmission cylinder (14) is connected to the inside of the pressure head (2).

6. The interventional hemostasis auxiliary device according to claim 5, characterized in that, The fixing plate (1) is also provided with a fitting mechanism for fitting the surface of the limb; the fitting mechanism includes a conveying cylinder (16) fixedly connected to the fixing plate (1), a second piston is slidably fitted on the inner wall of the conveying cylinder (16), a second transmission rod (17) is fixedly connected on the second piston, and the end of the second transmission rod (17) away from the second piston is fixedly connected to the outer wall of the clamping arm (3) away from the first transmission rod (15); a conveying pipe is connected to the side of the conveying cylinder (16) away from the second transmission rod (17), and the end of the conveying pipe away from the conveying cylinder (16) is connected to the interior of the flexible layer (6).

7. The interventional hemostasis auxiliary device according to claim 6, characterized in that, The bottom of the fixed plate (1) is also fixedly connected to the brake component (18), and the controller is connected to the brake component (18) by signal; the output shaft of the brake component (18) is fixedly connected to the friction plate (19), and the friction plate (19) contacts the outer wall of the output shaft of the drive component (7).

8. The interventional hemostasis auxiliary device according to claim 7, characterized in that, A pressure sensor is fixedly connected to the outer wall of the pressure head (2), and a display screen (20) is fixedly connected to the outer wall of the fixing plate (1). The controller is used to obtain the pressure signal output by the pressure sensor and send the pressure signal to the display screen (20) for display.

9. The interventional hemostasis auxiliary device according to claim 8, characterized in that, The controller is also connected to a timing unit, which is used to set the pressure time of the pressurizing mechanism according to the pressure requirements; the pressure head (2) is connected to a pressure relief valve, and the controller controls the opening and closing of the pressure relief valve based on the preset pressure time.

10. The interventional hemostasis auxiliary device according to claim 9, characterized in that, The controller is also used to control the operation of the drive unit (7) and the brake unit (18) based on the pressure signal, compare the pressure signal with a preset threshold, and release the pressing hemostasis action of the compression head (2) by controlling the operation of the drive unit (7) and the brake unit (18) when the pressure signal exceeds the preset threshold, and increase the pressing pressure of the compression head (2) by controlling the operation of the drive unit (7) and the brake unit (18) when the pressure signal is lower than the preset threshold.

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