A compression hemostasis device for removal of an arterial catheter

Abstract

The application discloses a pressing hemostasis device for pulling out an arterial catheter and relates to the technical field of medical devices. The pressing hemostasis device for pulling out an arterial catheter comprises a base and a support frame, the top of the base is provided with a slot, the bottom of the support frame is fixedly connected with an insertion plate, the two sides of the base are provided with fixing mechanisms, the top of the support frame is sleeved with an inverted U-shaped push-pull rod, the bottom end of the inverted U-shaped push-pull rod is fixedly connected with a connecting seat, the lower surface of the connecting seat is fixedly connected with a pressing seat, the inner wall of the support frame is fixedly connected with a clamping block group, the two sides of the connecting seat are provided with locking and releasing mechanisms, the outer surface of the vertical part of the inverted U-shaped push-pull rod is fixedly connected with a first fixing plate, the lower surface of the first fixing plate is fixedly connected with a first spring, the lower surface of the pressing seat is provided with a hemostatic cotton pad, and the two sides of the pressing seat are provided with pressing mechanisms. The device does not need manual pressing hemostasis, avoids the instability and uncertainty of manual pressing, and has good practicability.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a pressure-based hemostatic device for removing arterial catheters. Background Technology

[0002] In clinical nursing practice, pressure hemostasis after ductus arteriosus removal is a crucial and indispensable core step. Its standardized, accurate, and timely execution not only directly affects the immediate hemostasis at the puncture site but also profoundly impacts the patient's postoperative recovery process and overall quality of recovery. The core mechanism of this procedure lies in the precise application of physical compression: by applying continuous, stable, and moderately forceful vertical pressure above the puncture site (usually near the proximal end of the vascular insertion point), it effectively promotes the contact and aggregation of endothelial cells in the damaged vessel wall, thereby accelerating local thrombus formation and mechanical closure of the vessel wall rupture. The primary goal of this standardized procedure is to immediately and effectively control bleeding at the puncture site. More importantly, sufficient compression significantly reduces the risk of hematoma formation. Hematomas not only cause local pain and swelling, affecting patient comfort and limb movement, but in severe cases, they can also compress adjacent nerves and blood vessels, even leading to secondary infections, causing additional suffering and prolonging recovery time.

[0003] In the removal of the ductus arteriosus, hemostasis at the puncture site is a critical operation. Currently, it is generally done by medical staff to apply pressure manually, which has significant drawbacks. Manual pressure is difficult to maintain a constant pressure and is prone to fluctuations due to fatigue. Insufficient pressure may cause bleeding or hematoma, while excessive pressure may cause limb ischemia or even nerve damage. At the same time, a single compression needs to last for 15-30 minutes, and prolonged manual compression increases the labor intensity of medical staff and reduces work efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a pressure-based hemostasis device for removing arterial catheters, thereby solving the problems mentioned in the background art, such as the difficulty in maintaining constant pressure during manual pressure leading to unstable hemostasis and the increased workload of medical staff due to prolonged manual pressure.

[0005] To solve the above problems, the present invention provides the following technical solution: a pressure hemostasis device for removing arterial catheters, comprising a base and a support frame. The top of the base has a slot, and the bottom of the support frame is fixedly connected to an insert plate. Fixing mechanisms are provided on both sides of the base. An inverted U-shaped push-pull rod is sleeved on the top of the support frame. A connecting seat is fixedly connected to the bottom end of the inverted U-shaped push-pull rod. A pressure seat is fixedly connected to the lower surface of the connecting seat. A locking block assembly is fixedly connected to the inner wall of the support frame. Locking and releasing mechanisms are provided on both sides of the connecting seat. The outer surface of the vertical portion of the inverted U-shaped push-pull rod is fixedly connected to... The device includes a first fixed plate, a first spring fixedly connected to the lower surface of the first fixed plate, a hemostatic cotton pad provided on the lower surface of the pressure seat, a pressing mechanism provided on both sides of the pressure seat, a locking and releasing mechanism including a connecting rod, a sleeve fixedly connected to one end of the connecting rod, a guide plate sleeved on the inner surface of the sleeve, a connecting block and a fourth spring fixedly connected to both sides of the guide plate respectively, a limit block fixedly connected to the side of the connecting block away from the guide plate, a pressing mechanism including a third fixed plate, a bending pressure plate rotatably connected to the outer surface of the third fixed plate, and a fifth spring fixedly connected to the outer surface of the third fixed plate.

[0006] Preferably, the fixing mechanism includes a plug rod, the outer surface of which is fitted inside the base, the base having a first internal groove, the plug rod passing through the first internal groove and extending to the slot, and a second fixing plate being fixedly connected to the outer surface of the plug rod.

[0007] Preferably, the outer surface of the second fixing plate is fitted onto the inner surface of the first inner groove, a second spring is fitted onto the outside of the insertion rod, one end of the second spring is fixedly connected to the outer surface of the second fixing plate, the end of the second spring away from the second fixing plate is fixedly connected to the inner surface of the first inner groove, and a pull ring is fixedly connected to the end of the insertion rod away from the slot.

[0008] Preferably, a rubber pad is provided in the recess on the upper surface of the base, the inside of the slot is adapted to the outer surface of the insert plate, the outer surface of the insert plate is provided with a socket, and the outer surface of the insert rod is adapted to the inside of the socket.

[0009] Preferably, the outer surface of the connecting rod is sleeved inside the connecting seat, the end of the fourth spring away from the guide plate is fixedly connected to the inner surface of the sleeve, the connecting seat is provided with a second inner groove, the end of the connecting rod away from the sleeve extends into the second inner groove, the end of the connecting rod away from the sleeve is fixedly connected to a movable seat, and the outer surface of the connecting rod is sleeved with a third spring.

[0010] Preferably, one end of the third spring is fixedly connected to the outer surface of the movable seat, and the end of the third spring away from the movable seat is fixedly connected to the inner surface of the second inner groove. The top of the connecting seat is threadedly connected to a rotating rod, the bottom end of the rotating rod extends to the second inner groove, and the bottom end of the rotating rod is fixedly connected to a push rod.

[0011] Preferably, the push rod is located on the side of the movable seat away from the connecting rod, an L-shaped limiting plate is fixedly connected to the inner surface of the second inner groove, and a rotating block is fixedly connected to the top of the rotating rod.

[0012] Preferably, the first spring is sleeved on the outside of the inverted U-shaped push-pull rod, the bottom end of the first spring is fixedly connected to the upper surface of the support frame, a pressure sensor is provided on the lower surface of the pressure seat, an analog-to-digital converter and a microprocessor are provided inside the pressure seat, and a display screen is provided on the outer surface of the pressure seat.

[0013] Preferably, the bottom of the third fixing plate is fixedly connected to the upper surface of the pressure seat, the end of the fifth spring away from the third fixing plate is fixedly connected to the upper surface of the bending pressure plate, and a pull handle is fixedly connected to the upper surface of the bending pressure plate.

[0014] This invention provides a pressure-based hemostatic device for removing arterial catheters. It has the following beneficial effects:

[0015] 1. This pressure-based hemostatic device for removing arterial catheters achieves second-level assembly and disassembly of the base and support frame through the cooperation of the slot and the insert plate and the limiting of the fixing mechanism. After the insert plate is inserted into the slot, the elastic force of the second spring pushes the insert rod into the insertion hole, forming a mechanical interlock. This design significantly shortens the installation time and improves the installation efficiency of the device.

[0016] 2. This pressure-based hemostasis device for removing arterial catheters utilizes a linkage design between a locking block assembly and a locking and releasing mechanism to achieve stepless adjustment and instantaneous locking of the pressure depth. When the inverted U-shaped push-pull rod is pressed down, the limiting block is progressively engaged into the locking block assembly under the action of the fourth spring, precisely fixing the pressure seat height. Furthermore, by rotating the rotating block to push out the connecting rod, the limiting block can be moved to a position where it can be instantly locked. By rotating the rotating block in the opposite direction to retract the connecting rod, the limiting block can be disengaged from the locking block assembly. Simultaneously, in conjunction with the first spring, one-button release of pressure can be achieved. Both pressure-based hemostasis and pressure-relieving operations are simple and quick, greatly improving the efficiency of the device. This device eliminates the need for manual pressure-based hemostasis, avoiding the instability and uncertainty of manual pressure, making the device highly practical.

[0017] 3. This pressure-based hemostasis device for removing arterial catheters integrates a pressure sensor, a microprocessor, and a display screen to construct a real-time pressure closed-loop monitoring system. The pressure sensor collects pressure data at the hemostasis site, which is then processed by an analog-to-digital converter and digitally displayed on the screen. Medical staff can dynamically adjust the pressure accordingly to avoid bleeding due to insufficient pressure or tissue necrosis caused by excessive pressure, thus improving the ease of use of this device.

[0018] 4. This pressure-based hemostatic device for removing arterial catheters, through a clamping mechanism, allows the bending pressure plate to elastically press the edge of the hemostatic cotton pad under the action of the fifth spring when installing and fixing it, thus achieving rapid fixation of the cotton pad. The fixation can be released by pulling up the handle, allowing for the replacement of the hemostatic cotton pad and enabling rapid replacement of consumables, further improving the practicality of this device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall front view structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall disassembled structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the main structure of the pressure seat of the present invention;

[0023] Figure 5 This is a schematic diagram of the fixing mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the locking and releasing mechanism of the present invention;

[0025] Figure 7 This is a top view of the locking and releasing mechanism of the present invention;

[0026] Figure 8 This is a schematic diagram of the pressing mechanism of the present invention.

[0027] In the diagram: 1. Base; 2. Support frame; 3. Rubber pad; 4. Slot; 5. Insert plate; 6. Insert hole; 7. Fixing mechanism; 701. Insert rod; 702. First internal groove; 703. Second fixing plate; 704. Second spring; 705. Pull ring; 8. Inverted U-shaped push-pull rod; 9. Connecting seat; 10. Pressing seat; 11. Locking block assembly; 12. Locking and releasing mechanism; 1201. Connecting rod; 1202. Movable seat; 1203. Third spring; 1204. Second internal groove; 1205. Rotating rod; 120 6. Push rod; 1207. Rotary block; 1208. L-shaped limiting plate; 1209. Sleeve; 1210. Guide plate; 1211. Connecting block; 1212. Limiting block; 1213. Fourth spring; 13. First fixing plate; 14. First spring; 15. Hemostatic cotton pad; 16. Pressing mechanism; 1601. Third fixing plate; 1602. Bending pressure plate; 1603. Fifth spring; 1604. Pull handle; 17. Display screen; 18. Pressure sensor; 19. Analog-to-digital converter; 20. Microprocessor. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0029] Example

[0030] like Figures 1-8As shown, the present invention provides a technical solution: a pressure hemostasis device for removing arterial catheters, comprising a base 1 and a support frame 2. A slot 4 is provided at the top of the base 1, an insert plate 5 is fixedly connected to the bottom of the support frame 2, fixing mechanisms 7 are provided on both sides of the base 1, an inverted U-shaped push-pull rod 8 is sleeved on the top of the support frame 2, a connecting seat 9 is fixedly connected to the bottom end of the inverted U-shaped push-pull rod 8, a pressure seat 10 is fixedly connected to the lower surface of the connecting seat 9, a locking block assembly 11 is fixedly connected to the inner wall of the support frame 2, locking and releasing mechanisms 12 are provided on both sides of the connecting seat 9, a first fixing plate 13 is fixedly connected to the outer surface of the vertical portion of the inverted U-shaped push-pull rod 8, and a first spring 14 is fixedly connected to the lower surface of the first fixing plate 13. The lower surface of the seat 10 is provided with a hemostatic cotton pad 15. The two sides of the pressure seat 10 are provided with a pressing mechanism 16. The locking and releasing mechanism 12 includes a connecting rod 1201. One end of the connecting rod 1201 is fixedly connected to a sleeve 1209. The inner surface of the sleeve 1209 is fitted with a guide plate 1210. The two sides of the guide plate 1210 are respectively fixedly connected with a connecting block 1211 and a fourth spring 1213. The side of the connecting block 1211 away from the guide plate 1210 is fixedly connected with a limit block 1212. The pressing mechanism 16 includes a third fixing plate 1601. The outer surface of the third fixing plate 1601 is rotatably connected with a bending pressure plate 1602. The outer surface of the third fixing plate 1601 is fixedly connected with a fifth spring 1603.

[0031] The fixing mechanism 7 includes a plug rod 701. The outer surface of the plug rod 701 is fitted inside the base 1. The base 1 has a first internal groove 702. The plug rod 701 passes through the first internal groove 702 and extends to the slot 4. A second fixing plate 703 is fixedly connected to the outer surface of the plug rod 701. The second fixing plate 703 in the first internal groove 702 facilitates the stable sliding of the plug rod 701 in the base 1.

[0032] The outer surface of the second fixing plate 703 is fitted onto the inner surface of the first inner groove 702. The outside of the insertion rod 701 is fitted with a second spring 704. One end of the second spring 704 is fixedly connected to the outer surface of the second fixing plate 703, and the end of the second spring 704 away from the second fixing plate 703 is fixedly connected to the inner surface of the first inner groove 702. The end of the insertion rod 701 away from the slot 4 is fixedly connected to a pull ring 705. Through the elastic force of the second spring 704, the insertion rod 701 can be automatically inserted into the insertion hole 6, thereby realizing the quick fixation of the support frame 2. At the same time, the pull ring 705 makes it convenient to manually pull the insertion rod 701 for disassembly.

[0033] A rubber pad 3 is provided in the recessed area on the upper surface of the base 1. The inside of the slot 4 is adapted to the outer surface of the insert plate 5. The outer surface of the insert plate 5 is provided with a socket 6. The outer surface of the insert rod 701 is adapted to the inside of the socket 6. The rubber pad 3 increases the comfort between the limb and the base 1.

[0034] The outer surface of the connecting rod 1201 is fitted inside the connecting seat 9. The end of the fourth spring 1213 away from the guide plate 1210 is fixedly connected to the inner surface of the sleeve 1209. The connecting seat 9 is provided with a second internal groove 1204. The end of the connecting rod 1201 away from the sleeve 1209 extends to the second internal groove 1204. The end of the connecting rod 1201 away from the sleeve 1209 is fixedly connected to a movable seat 1202. The outside of the connecting rod 1201 is fitted with a third spring 1203. The fourth spring 1213 allows the limiting block 1212 to pass through the blocks on the block group 11 and also allows the limiting block 1212 to be locked between the blocks on the block group 11.

[0035] One end of the third spring 1203 is fixedly connected to the outer surface of the movable seat 1202, and the other end of the third spring 1203 away from the movable seat 1202 is fixedly connected to the inner surface of the second inner groove 1204. The top of the connecting seat 9 is threadedly connected to a rotating rod 1205, the bottom end of the rotating rod 1205 extends to the second inner groove 1204, and the bottom end of the rotating rod 1205 is fixedly connected to a push rod 1206. By rotating the rotating rod 1205 in a directional manner, the push rod 1206 is moved, thereby releasing the support of the movable seat 1202 and realizing the unlocking function of the locking and releasing mechanism 12.

[0036] The push rod 1206 is located on the side of the movable seat 1202 away from the connecting rod 1201. An L-shaped limiting plate 1208 is fixedly connected to the inner surface of the second inner groove 1204. A rotating block 1207 is fixedly connected to the top of the rotating rod 1205. The setting of the L-shaped limiting plate 1208 restricts the movement range of the push rod 1206, ensuring that the push rod 1206 can stably move to the designated position when rotating the rotating rod 1205.

[0037] The first spring 14 is sleeved on the outside of the inverted U-shaped push-pull rod 8. The bottom end of the first spring 14 is fixedly connected to the upper surface of the support frame 2. The lower surface of the pressure seat 10 is provided with a pressure sensor 18. The pressure seat 10 is equipped with an analog-to-digital converter 19 and a microprocessor 20. The outer surface of the pressure seat 10 is provided with a display screen 17. The pressure sensor 18 monitors the pressure applied by the pressure seat 10 to the hemostasis site in real time, and the pressure signal is converted into a digital signal by the analog-to-digital converter 19 and the microprocessor 20, and finally displayed on the display screen 17. This allows the operator to intuitively observe the pressure force and ensure that the pressure is constant within a suitable range.

[0038] The bottom of the third fixing plate 1601 is fixedly connected to the upper surface of the pressure seat 10. The end of the fifth spring 1603 away from the third fixing plate 1601 is fixedly connected to the upper surface of the bending pressure plate 1602. A pull handle 1604 is fixedly connected to the upper surface of the bending pressure plate 1602. Through the elastic force of the fifth spring 1603, the bending pressure plate 1602 presses and fixes the hemostatic cotton pad 15, ensuring that the hemostatic cotton pad 15 will not fall off or shift when pressure is applied.

[0039] The working principle of the above embodiments:

[0040] In use, place the base 1 under the limb that needs to be pressed to stop bleeding, place the limb on the rubber pad 3, pull the pull ring 705 outward to make the insertion rod 701 leave the slot 4, the second fixing plate 703 moves along the first inner groove 702, the second spring 704 is compressed, then align the insertion plate 5 at the bottom of the support frame 2 and insert it into the slot 4 on the base 1. At this time, the insertion rod 701 is just aligned with the insertion hole 6 on the insertion plate 5. Release the pull ring 705, and under the elastic force of the second spring 704, the insertion rod 701 returns to its original position and is inserted into the insertion hole 6, so that the insertion plate 5 is fixed in the slot 4, thereby making the support frame 2 stably installed on the base 1.

[0041] When pressure is needed to stop bleeding, push down the inverted U-shaped push-pull rod 8. The connecting seat 9, the pressure seat 10, and the first fixing plate 13 move down accordingly, and the first spring 14 is compressed. As the connecting seat 9 moves down, the limiting block 1212 also moves down with the cooperation of the locking block group 11 and the fourth spring 1213. When the hemostatic cotton pad 15 on the lower surface of the pressure seat 10 is pressed at the hemostatic position and the pressure value displayed on the display screen 17 is within a suitable range, stop pressing down the inverted U-shaped push-pull rod 8. At this time, the limiting block 1212 automatically locks in the corresponding position of the locking block group 11. The inverted U-shaped push-pull rod 8, the connecting seat 9, and the pressure seat 10 remain in the current position, realizing rapid pressure hemostasis and continuous pressure. The pressure sensor 18 is used to detect the pressure applied by the pressure seat 10 to the hemostatic site. The pressure sensor 18 converts the electrical signal into a numerical signal through the amplification circuit, the analog-to-digital converter 19, and the microprocessor 20 and displays it on the display screen 17, so that the operator can intuitively observe the pressure force.

[0042] When the pressure to stop the bleeding ends, rotate the rotating block 1207 ninety degrees, causing the horizontal push rod 1206 to rotate to the vertical position, releasing the support of the push rod 1206 on the movable seat 1202. At this time, the third spring 1203, which was in a compressed state, returns to its length, driving the connecting rod 1201 to move towards the second inner groove 1204, thereby causing the limiting block 1212, which was stuck in the locking block group 11, to leave the locking block group 11. The connecting seat 9 is released from restriction. Under the elastic force of the first spring 14, the inverted U-shaped push-pull rod 8, the connecting seat 9, and the pressure seat 10 move upward and reset, relieving the pressure on the hemostatic site. Then, pull the pull ring 705 outward, causing the insertion rod 701 to leave the insertion hole 6. Then, lift the support frame 2 upward, so that the support... The frame 2 is separated from the base 1, making it easy to remove the device from the limb. When the device needs to be used again, the rotating block 1207 needs to be rotated 90 degrees in the opposite direction, so that the longitudinal push rod 1206 is rotated to the lateral direction. The push rod 1206 moves along the arc surface of the movable seat 1202, so that the movable seat 1202 is supported by the lateral push rod 1206. The third spring 1203 is compressed, and the connecting rod 1201 moves outward, thereby driving the sleeve 1209 and the limiting block 1212 to move outward. This makes it convenient for the limiting block 1212 to automatically lock when the device is used for compression hemostasis again, so as to achieve rapid compression hemostasis. The L-shaped limiting plate 1208 is used to limit the rotation angle of the push rod 1206.

[0043] By pulling the handle 1604 through the clamping mechanism 16, the bending pressure plate 1602 is rotated outward, the fifth spring 1603 is compressed, and the hemostatic cotton pad 15 is placed against the lower surface of the pressure seat 10. Then, the handle 1604 is released, and under the elastic force of the fifth spring 1603, the bending pressure plate 1602 returns to its original position and presses the edge of the hemostatic cotton pad 15, so that the hemostatic cotton pad 15 is fixed to the lower surface of the pressure seat 10. When the hemostasis is completed and the device is removed from the limb, the handle 1604 is pulled again, so that the bending pressure plate 1602 releases the fixation of the hemostatic cotton pad 15, and the blood-stained hemostatic cotton pad 15 is removed. A new hemostatic cotton pad 15 is installed and fixed when the device is used for hemostasis next time.

[0044] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A pressure-based hemostatic device for removing an arterial catheter, comprising a base (1) and a support frame (2), characterized in that: The base (1) has a slot (4) at its top, the support frame (2) has a fixed plate (5) at its bottom, the base (1) has a fixing mechanism (7) on both sides, the support frame (2) has an inverted U-shaped push-pull rod (8) on its top, the bottom of the inverted U-shaped push-pull rod (8) has a fixed connecting seat (9), the lower surface of the connecting seat (9) has a fixed pressing seat (10), the inner wall of the support frame (2) has a locking block assembly (11), the connecting seat (9) has a locking and releasing mechanism (12) on both sides, the outer surface of the vertical part of the inverted U-shaped push-pull rod (8) has a fixed first fixing plate (13), the lower surface of the first fixing plate (13) has a fixed first spring (14), and the lower surface of the pressing seat (10) has a hemostatic cotton pad (15). The pressure base (10) is provided with a pressing mechanism (16) on both sides. The locking and releasing mechanism (12) includes a connecting rod (1201). One end of the connecting rod (1201) is fixedly connected to a sleeve (1209). The inner surface of the sleeve (1209) is fitted with a guide plate (1210). The two sides of the guide plate (1210) are respectively fixedly connected to a connecting block (1211) and a fourth spring (1213). The side of the connecting block (1211) away from the guide plate (1210) is fixedly connected to a limit block (1212). The pressing mechanism (16) includes a third fixing plate (1601). The outer surface of the third fixing plate (1601) is rotatably connected to a bending pressure plate (1602). The outer surface of the third fixing plate (1601) is fixedly connected to a fifth spring (1603).

2. The pressure-based hemostatic device for removing an arterial catheter according to claim 1, characterized in that: The fixing mechanism (7) includes a plug rod (701), the outer surface of which is fitted inside the base (1), the base (1) has a first internal groove (702) inside, the plug rod (701) passes through the first internal groove (702) and extends to the slot (4), and a second fixing plate (703) is fixedly connected to the outer surface of the plug rod (701).

3. A pressure-based hemostatic device for removing an arterial catheter according to claim 2, characterized in that: The outer surface of the second fixing plate (703) is fitted onto the inner surface of the first inner groove (702). The outside of the insertion rod (701) is fitted with a second spring (704). One end of the second spring (704) is fixedly connected to the outer surface of the second fixing plate (703). The end of the second spring (704) away from the second fixing plate (703) is fixedly connected to the inner surface of the first inner groove (702). The end of the insertion rod (701) away from the slot (4) is fixedly connected with a pull ring (705).

4. A pressure-based hemostatic device for removing an arterial catheter according to claim 2, characterized in that: A rubber pad (3) is provided in the recess on the upper surface of the base (1). The interior of the slot (4) is adapted to the outer surface of the insert plate (5). The outer surface of the insert plate (5) is provided with a socket (6). The outer surface of the insert rod (701) is adapted to the interior of the socket (6).

5. A pressure-based hemostatic device for removing an arterial catheter according to claim 1, characterized in that: The outer surface of the connecting rod (1201) is sleeved inside the connecting seat (9). The end of the fourth spring (1213) away from the guide plate (1210) is fixedly connected to the inner surface of the sleeve (1209). The connecting seat (9) is provided with a second inner groove (1204). The end of the connecting rod (1201) away from the sleeve (1209) extends to the second inner groove (1204). The end of the connecting rod (1201) away from the sleeve (1209) is fixedly connected to a movable seat (1202). The outer surface of the connecting rod (1201) is sleeved with a third spring (1203).

6. A pressure-based hemostatic device for removing an arterial catheter according to claim 5, characterized in that: One end of the third spring (1203) is fixedly connected to the outer surface of the movable seat (1202), and the end of the third spring (1203) away from the movable seat (1202) is fixedly connected to the inner surface of the second inner groove (1204). The top of the connecting seat (9) is threadedly connected to a rotating rod (1205), the bottom end of the rotating rod (1205) extends to the second inner groove (1204), and the bottom end of the rotating rod (1205) is fixedly connected to a push rod (1206).

7. A pressure-based hemostatic device for removing an arterial catheter according to claim 6, characterized in that: The push rod (1206) is located on the side of the movable seat (1202) away from the connecting rod (1201), and an L-shaped limiting plate (1208) is fixedly connected to the inner surface of the second inner groove (1204). A rotating block (1207) is fixedly connected to the top of the rotating rod (1205).

8. A pressure-based hemostatic device for removing an arterial catheter according to claim 1, characterized in that: The first spring (14) is sleeved on the outside of the inverted U-shaped push-pull rod (8). The bottom end of the first spring (14) is fixedly connected to the upper surface of the support frame (2). A pressure sensor (18) is provided on the lower surface of the pressure seat (10). An analog-to-digital converter (19) and a microprocessor (20) are provided inside the pressure seat (10). A display screen (17) is provided on the outer surface of the pressure seat (10).

9. A pressure-based hemostatic device for removing an arterial catheter according to claim 1, characterized in that: The bottom of the third fixing plate (1601) is fixedly connected to the upper surface of the pressure seat (10), and the end of the fifth spring (1603) away from the third fixing plate (1601) is fixedly connected to the upper surface of the bending pressure plate (1602). A pull handle (1604) is fixedly connected to the upper surface of the bending pressure plate (1602).

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