A neurosurgery angiography DSA postoperative femoral artery compressor

Abstract

This invention provides a femoral artery compressor after DSA (Digital Subtraction Angiography) in neurosurgery, belonging to the field of medical device technology. The femoral artery compressor includes a support plate, a support frame fixedly mounted on the upper end of one side of the support plate, a fixing frame mounted on the upper end of the support frame, and a clamping component on the lower side of the fixing frame. A cavity is formed inside the support plate, and a driving component is installed within the cavity. In this design, the driving component, in conjunction with a first piston plate, effectively avoids the risks associated with excessive compression pressure. When excessive compression pressure causes a drop in the patient's lower leg temperature, the thermally expanding liquid in the cavity contracts. The driving component then drives the threaded rod and the first piston plate, introducing some air from the airbag into the piston cavity, reducing the pressure of the compression plate on the rupture site and preventing discomfort such as coldness, numbness, and pain in the lower limbs. Simultaneously, the pressure adjustment process requires no manual intervention, responds promptly, reduces the operational burden on medical staff, and ensures the safety of compression hemostasis.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a femoral artery compressor after DSA angiography in neurosurgery. Background Technology

[0002] Neuroangiography (DSA) is a core minimally invasive technique in neurosurgery for the diagnosis and treatment of cerebrovascular diseases. With its clear vascular imaging capabilities, it is widely used for the precise diagnosis and treatment of conditions such as cerebral aneurysms, cerebral vascular malformations, and cerebral infarction. This procedure is typically performed via femoral artery puncture. Effective hemostasis of the puncture site post-procedure is crucial for ensuring surgical safety and reducing complications. Improper hemostasis or inadequate compression management can easily lead to complications such as bleeding at the puncture site, hematoma, pseudoaneurysm, and lower limb ischemia, severely impacting the patient's recovery process and even endangering their life.

[0003] After the DSA (Digital Subtraction Angiography) procedure, the femoral artery compression device needs to be continuously pressed on the rupture site for 2-3 hours. During this process, because each patient's body shape is different and the distance between the femoral artery and the body surface is also different, the staff can adjust the pressure of the compression device on the patient's leg based on their experience. When the pressure is too high, it can easily cause the patient's lower limbs to feel cold, numb, and painful, causing discomfort to the patient.

[0004] Therefore, the present invention discloses a femoral artery compressor after neurosurgical DSA. Summary of the Invention

[0005] This invention provides a femoral artery compressor after neurosurgical DSA angiography to solve the technical problem of excessive pressure on the patient's leg.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A femoral artery compressor after DSA angiography in neurosurgery includes a support plate, characterized in that: two support frames are fixedly installed on the upper end of one side of the support plate, and a fixation frame is fixedly installed on the upper end of the two support frames; a pressing component is provided on the lower side of the middle part of the fixation frame, the pressing component is used to press the rupture site, and the pressing component includes a pressing plate located on the lower side of the fixation frame, and an airbag is fixedly installed between the upper end of the pressing plate and the fixation frame;

[0008] The support plate has a cavity on its side away from the fixed frame. A heat-conducting plate is embedded in the upper part of the support plate at a position corresponding to the cavity. The cavity is filled with a thermally expanding liquid. A driving assembly is installed inside the cavity. The driving assembly includes a second piston plate slidably installed inside the cavity. A connecting rod is fixedly installed at the end of the second piston plate near the fixed frame.

[0009] The support frame has a piston chamber inside, and a first piston plate is slidably installed inside the piston chamber. A threaded rod is passed through the middle of the first piston plate.

[0010] The connecting rod is used to drive the threaded rod to rotate when the second piston plate moves. The fixing frame has a connecting groove inside, and the upper end of the piston chamber is connected to the inside of the airbag through the connecting groove.

[0011] Optionally, a plurality of pawls are rotatably mounted on one end of the connecting rod, and a gear is fixedly mounted on the lower end of the threaded rod. The connecting rod is driven by the meshing of the pawls and the gear.

[0012] Optionally, a return spring is fixedly installed at one end of the pawl, and the other end of the return spring is fixedly connected to the connecting rod. The return spring is used to drive the pawl to return to its original position.

[0013] Optionally, corrugated pipes are fixedly installed on both sides of the upper end of the pressure plate, and the corrugated pipes are filled with polymer material. A blocking cloth is fixedly installed at the lower end of the pressure plate at the position corresponding to the lower end of the corrugated pipe. The blocking cloth is used to block the polymer material inside the corrugated pipe.

[0014] Multiple guide rods are also fixedly installed on the upper part of the pressure plate, and the guide rods pass through the fixing frame and are slidably connected to it.

[0015] Optionally, multiple clamping plates are slidably installed around the pressing plate. A tension spring is fixedly installed at one end of the clamping plate near the pressing plate, and the other end of the tension spring away from the clamping plate is fixedly connected to the pressing plate. The tension spring is used to pull the clamping plate, and the clamping plate is used to clamp the gauze.

[0016] Optionally, the upper end of the fixing frame is provided with an air inlet, a valve is installed inside the air inlet, the air inlet is connected to the inside of the connecting groove, and the air inlet is connected to the inside of the airbag through the connecting groove.

[0017] Optionally, the support plate has a notch in the middle, and a crossbar is provided inside the notch. The crossbar is used to support the patient's popliteal fossa.

[0018] Optionally, sliders are fixedly installed at both ends of the crossbar, and fastening bolts are provided through the lower side of the sliders. The fastening bolts are threadedly connected to the sliders and are used to fix the sliders. A groove is provided on the inner wall of the notch at the position corresponding to the slider, and the crossbar is slidably connected to the slider and the groove through the slider.

[0019] Optionally, the end of the slide away from the crossbar extends through the support plate to its upper end, and a fixing strap is fixedly installed at the end of the slider away from the crossbar, with the ends of the two fixing straps away from the slider connected by a buckle.

[0020] Optionally, multiple rubber blocks are fixedly installed on the fixing strap, and the rubber blocks are used to compress the patient's knee eye area.

[0021] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0022] In the above scheme, the driving component, in conjunction with the first piston plate, can effectively avoid the risks caused by excessive compression pressure. When excessive compression pressure causes the temperature of the patient's lower leg to drop, the thermally expanded liquid in the cavity contracts. By driving the threaded rod and the first piston plate through the driving component, some air in the airbag is introduced into the piston cavity, reducing the pressure of the compression plate on the rupture site and preventing discomfort such as coldness, numbness, and pain in the lower limbs. At the same time, the pressure adjustment process does not require manual intervention, responds promptly, reduces the operational burden on medical staff, and ensures the safety of compression hemostasis.

[0023] By using a corrugated tube in conjunction with a polymer material, when insufficient pressure leads to bleeding, the blood is absorbed by the polymer material at the pressure plate. After expansion, the polymer material squeezes the corrugated tube, pushing the pressure plate to apply further pressure, achieving temporary hemostasis and preventing further bleeding. This buys time for medical staff to adjust the pressure, maximizing patient safety. At the same time, the amount of oozing blood can visually alert staff to insufficient pressure.

[0024] The device slides to the patient's popliteal fossa via a horizontal bar and is fixed in place. The concave structure of the popliteal fossa creates a limiting effect, preventing the entire device from shifting due to patient leg movement. It works in conjunction with two side fixation straps connected by buckles. Rubber blocks on the fixation straps embed into the knee joint to prevent the leg from rotating relative to the support plate. This double fixation structure effectively avoids the risk of bleeding caused by pressure displacement and improves hemostasis stability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the support plate of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention;

[0027] Figure 3 This is a schematic diagram of the slider and fastening bolts of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention.

[0028] Figure 4 This is a schematic diagram of the second piston plate and connecting rod portion of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention.

[0029] Figure 5 This is a schematic diagram of the threaded rod and the first piston plate of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention.

[0030] Figure 6 This invention relates to a femoral artery compressor after DSA (Digital Subtraction Angiography) in neurosurgery. Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the connecting groove portion of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention;

[0032] Figure 8 This is a schematic diagram of the blocking cloth and corrugated tube structure of the femoral artery compressor after DSA angiography in neurosurgery according to the present invention.

[0033] [Figure Labels]

[0034] 1. Support plate; 101. Support frame; 102. Fixing frame; 103. Cavity; 104. Heat-conducting plate; 105. Piston chamber; 106. First piston plate; 107. Threaded rod; 108. Connecting groove; 109. Gear; 110. Air inlet; 111. Valve; 112. Notch; 113. Crossbar; 114. Slider; 115. Fastening bolt; 116. Slide groove; 117. Fixing strap; 118. Buckle; 119. Rubber block;

[0035] 2. Pressing assembly; 201. Pressure plate; 202. Airbag; 203. Corrugated pipe; 204. Blocking cloth; 205. Guide rod; 206. Clamping plate; 207. Tension spring;

[0036] 3. Drive assembly; 301. Second piston plate; 302. Connecting rod; 303. Pawl; 304. Return spring. Detailed Implementation

[0037] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0038] like Figures 1 to 8 As shown, an embodiment of the present invention provides a femoral artery compressor after neurosurgical DSA, including a support plate 1. Two support frames 101 are fixedly installed on the upper end of one side of the support plate 1. Fixing frames 102 are fixedly installed on the upper end of the two support frames 101. A pressing component 2 is provided on the lower side of the middle part of the fixing frame 102. The pressing component 2 is used to press the rupture site. The pressing component 2 includes a compression plate 201 located on the lower side of the fixing frame 102. An air bag 202 is fixedly installed between the upper end of the compression plate 201 and the fixing frame 102.

[0039] A cavity 103 is provided inside the side of the support plate 1 away from the fixed frame 102. A heat-conducting plate 104 is embedded at the upper end of the support plate 1 at the position corresponding to the cavity 103. The cavity 103 is filled with a thermal expansion liquid, which can be mercury or gallium indium tin alloy. A drive component 3 is installed inside the cavity 103.

[0040] The support frame 101 has a piston chamber 105 inside, and a first piston plate 106 is slidably installed inside the piston chamber 105. A threaded rod 107 is passed through the middle of the first piston plate 106. The fixed frame 102 has a connecting groove 108 inside, and the upper end of the piston chamber 105 is connected to the inside of the airbag 202 through the connecting groove 108.

[0041] The driving component 3 includes a second piston plate 301 that is slidably installed inside the cavity 103. A connecting rod 302 is fixedly installed at one end of the second piston plate 301 near the fixed frame 102. The connecting rod 302 is used to drive the threaded rod 302 to rotate when the second piston plate 301 moves.

[0042] By adopting the above technical solution, when excessive pressure is applied to the patient's wound, the blood flow to the lower leg is significantly reduced, resulting in a drop in the temperature of the lower leg. As the temperature of the lower leg decreases, the heat can be transferred through the heat-conducting plate 104 to the thermally expanding liquid inside the cavity 103, causing the thermally expanding liquid to contract. This contraction, under the pressure difference, causes the second piston plate 301 to move. The movement of the second piston plate 301 drives the connecting rod 302 to move, which in turn causes the threaded rod 107 to rotate. The rotation of the threaded rod 107 causes the first piston plate 106 on its upper side to descend. When the first piston plate 106 descends, the space above the first piston plate 106 in the piston chamber 105 will increase, allowing some air in the connecting groove 108 to enter the piston chamber 105. Similarly, after some air in the connecting groove 108 enters the piston chamber 105, some air in the airbag 202 can enter the connecting groove 108 under the action of air pressure difference. At this time, the squeezing force of the airbag 202 on the compression plate 201 will be reduced, thereby reducing the pressure of the compression plate 201 on the patient's rupture site, avoiding excessive pressure that slows blood flow, and thus avoiding coldness, numbness, and pain in the lower limbs, reducing the patient's comfort during treatment.

[0043] Multiple pawls 303 are rotatably mounted on one end of the connecting rod 302, and a gear 109 is fixedly mounted on the lower end of the threaded rod 107. The connecting rod 302 is driven by meshing with the gear 109 through the pawls 303.

[0044] A return spring 304 is fixedly installed at one end of the pawl 303, and the other end of the return spring 304 is fixedly connected to the connecting rod 302. The return spring 304 is used to drive the pawl 303 to reset.

[0045] Multiple clamping plates 206 are slidably installed around the pressure plate 201. A tension spring 207 is fixedly installed at one end of the clamping plate 206 near the pressure plate 201. The end of the tension spring 207 away from the clamping plate 206 is fixedly connected to the pressure plate 201. The tension spring 207 is used to pull the clamping plate 206, and the clamping plate 206 is used to clamp the gauze.

[0046] An air inlet 110 is provided through the upper end of the fixing frame 102. A valve 111 is installed inside the air inlet 110. The air inlet 110 is connected to the inside of the connecting groove 108. The air inlet 110 is connected to the inside of the airbag 202 through the connecting groove 108. The airbag 202 can be made of medical grade silicone material with a thickness of 2-3mm and a pressure resistance of not less than 0.3MPa. The surface of the airbag 202 is provided with anti-pressure texture to avoid rupture caused by excessive local stress.

[0047] By adopting the above technical solution, during use, first place the sterile gauze for hemostasis at the lower end of the support plate 1. Then, pull the clamp 206 to move it relative to the compression plate 201. Next, fold the edge of the sterile gauze between the clamp 206 and the compression plate 201. Release the clamp 206. At this time, under the action of the tension spring 207, the clamp 206 can be pulled to move, so that the clamp 206 is close to the compression plate 201, thereby clamping the edge of the sterile gauze with the compression plate 201. Then, place the support plate 1 on the lower side of the patient's leg, and align the position of the heat-conducting plate 104 with the position of the patient's lower leg, and align the center of the compression plate 201. Align the position with the rupture site, then connect the manually inflatable balloon to the air inlet 110. Open the valve 111 on the air inlet 110 to allow air to enter and inflate. At this time, air can continuously enter the connecting groove 108 and then enter the airbag 202. The airbag 202 expands and can squeeze the compression plate 201, causing the compression plate 201 to descend. After the compression plate 201 descends, it can drive the sterile gauze on its lower side to descend. At this time, the sterile gauze can contact the rupture site. As the pressure in the airbag 202 increases, the pressure of the compression plate 201 on the patient's rupture site will also increase, thereby achieving the effect of hemostasis.

[0048] When the second piston plate 301 moves, the connecting rod 302 can drive the pawl 303 rotatably connected to it to move. The pawl 303 can then mesh with the gear 109. At this time, the return spring 304 can pull the pawl 303 to prevent it from rotating due to the obstruction of the gear 109. When the connecting rod 302 meshes with the gear 109 through the pawl 303, it can drive the gear 109 to rotate. After the gear 109 rotates, it can drive the threaded rod 107 fixedly connected to it to rotate.

[0049] Corrugated tubes 203 are fixedly installed on both sides of the upper end of the pressure plate 201. The corrugated tubes 203 can be made of food-grade PVC material, with a length of 5-8cm and a diameter of 3-4cm. They are filled with 10-15g of alginate polymer material. This material has a water absorption and expansion rate of not less than 300% and a Shore A50-A60 hardness after expansion, ensuring that it can effectively squeeze the corrugated tubes 203 to push the pressure plate 201. The blocking cloth 204 is made of medical non-woven fabric with a thickness of 0.5-1mm. It has good liquid permeability and tensile strength to prevent it from being torn by the expanded polymer material. At the same time, the edge of the blocking cloth 204 is fixed to the pressure plate 201 by heat sealing process to prevent the polymer material from leaking out. The corrugated tubes 203 are filled with polymer material. The blocking cloth 204 is fixedly installed at the lower end of the pressure plate 201 at the corresponding position of the lower end of the corrugated tubes 203. The blocking cloth 204 is used to block the polymer material in the corrugated tubes 203. The polymer material can be alginate.

[0050] Multiple guide rods 205 are also fixedly installed on the upper end of the pressure plate 201. The guide rods 205 pass through the fixing frame 102 and are slidably connected to it.

[0051] By adopting the above technical solution, when the pressure of the compression plate 201 on the rupture is insufficient, causing continuous bleeding at the rupture site, the blood will soak the sterile gauze and be absorbed by the barrier cloth 204 along the gauze. At this time, the blood can be absorbed by the polymer material through the barrier cloth 204. The polymer material can expand rapidly after contacting the blood. When the polymer material expands, it can squeeze the inner wall of the corrugated tube 203, causing the corrugated tube 203 to elongate. After the corrugated tube 203 elongates, it can squeeze the compression plate 201, increasing the pressure of the compression plate 201 on the patient's rupture site. This can achieve the effect of temporary hemostasis, ensuring the patient's safety. At the same time, by observing the amount of bleeding, staff can be alerted to insufficient pressure.

[0052] The support plate 1 has a notch 112 in the middle, and a crossbar 113 is provided inside the notch 112. The crossbar 113 is used to support the patient's popliteal fossa.

[0053] Both ends of the crossbar 113 are fixedly installed with sliders 114. A fastening bolt 115 is provided through the lower side of the slider 114, and the fastening bolt 115 is threadedly connected to the slider 114. The end of the fastening bolt 115 is pressed into contact with the inner wall of the groove 116. The fastening bolt 115 is used to fix the slider 114. The groove 116 is opened on the inner wall of the notch 112 at the position corresponding to the slider 114. The crossbar 113 is slidably connected to the groove 116 through the slider 114.

[0054] By adopting the above technical solution, after the staff places the support plate 1 under the patient's leg and aligns the position of the compression plate 201 with the patient's laceration, they push the crossbar 113, causing the crossbar 113 and the slider 114 to move along the direction of the groove 116, and positioning the crossbar 113 in the patient's popliteal fossa. Then, they rotate the fastening bolt 115 to press the end of the fastening bolt 115 against the inner wall of the groove 116, thereby fixing the slider 114 and the crossbar 113 relative to the support plate 1. At this time, since the popliteal fossa is concave relative to the thigh and calf, when the crossbar 113 is located in the popliteal fossa and fixed, the crossbar 113 will be blocked by the calf and thigh. Therefore, when the patient's leg moves, the support frame 101 will not move along the direction of the leg, avoiding changes in the compression position and bleeding.

[0055] The end of the slide 116 away from the crossbar 113 extends through the support plate 1 to its upper end. The crossbar 113 can be made of medical soft rubber to maintain elasticity and provide patients with a certain degree of comfort, avoiding excessive pressure that could cause discomfort in the patient's popliteal fossa. The end of the slider 114 away from the crossbar 113 is fixedly equipped with a fixing strap 117. The fixing strap 117 can be made of elastic medical webbing, with a width of 3-4cm and a length adjustment range of 50-80cm to suit patients of different body types. The rubber block 119 is also made of medical soft rubber, in the shape of a hemispherical or frustum, with a diameter of 2-3cm and an anti-slip texture on the surface. The rubber block 119 and the fixing strap 117 are detachably connected, such as with Velcro, for easy replacement and cleaning. The ends of the two fixing straps 117 away from the slider 114 are connected by a buckle 118.

[0056] Multiple rubber blocks 119 are fixedly installed on the fixing strap 117. The rubber blocks 119 are used to compress the patient's knee joint.

[0057] By adopting the above technical solution, after the staff adjusts the position of the crossbar 113, the two fixing straps 117 are connected together by the buckle 118, and after adjusting the length, the rubber block 119 is aligned with the knee eye position on both sides of the patient's knee, so that the rubber block 119 is located inside the knee eye, preventing the leg from rotating relative to the support plate 1 when the patient's leg moves, thereby preventing the position of the compression plate 201 from moving relative to the rupture, and preventing the compression position from changing.

[0058] In this equipment, the parts that need to be sealed can be sealed using or by adding nitrile rubber sealing rings.

[0059] The working process of the femoral artery compressor after neurosurgical DSA angiography provided by this invention is as follows:

[0060] When using this femoral artery compressor after DSA angiography, first place sterile gauze for hemostasis at the lower end of the support plate 1. Pull the clamps 206 around the compression plate 201 to move them relative to the compression plate 201. Fold the edge of the sterile gauze between the clamps 206 and the compression plate 201, then release the clamps 206. Under the action of the tension spring 207, the clamps 206 and the compression plate 201 work together to clamp the edge of the gauze. Next, place the support plate 1 under the patient's leg, so that the heat-conducting plate 104 corresponds to the patient's lower leg and the center of the compression plate 201 is aligned with the femoral artery rupture site. Push... The crossbar 113 within the notch 112 moves along the slide groove 116 to the patient's popliteal fossa. The fastening bolt 115 on the slider 114 is rotated so that its end presses against the inner wall of the slide groove 116, fixing the position of the crossbar 113 and the slider 114 to prevent the device from moving along the leg. Then, the two fixing straps 117 are connected via buckles 118 and their lengths are adjusted so that the rubber blocks 119 on the fixing straps 117 are aligned with and embedded in the knee joints on both sides of the patient's knee, preventing the leg from rotating relative to the support plate 1. Finally, the manually inflatable balloon is connected to the air inlet 110 at the upper end of the fixing frame 102, and the air inlet is opened. Inflation occurs through valve 111 (orifice 110). Air enters the airbag 202 via the connecting groove 108. The airbag 202 expands, compressing the pressure plate 201 and causing it to descend. This causes sterile gauze to adhere to the laceration, gradually increasing the pressure to achieve hemostasis. If the pressure is too high, causing a drop in the patient's lower leg temperature, the heat is transferred via the heat-conducting plate 104 to the thermally expanding liquid in the cavity 103, causing it to contract. This pushes the second piston plate 301, moving the connecting rod 302 and the pawl 303. The pawl 303 meshes with the gear 109, causing the threaded rod 107 to rotate, thus lowering the first piston plate 106 and increasing the piston cavity. In the upper space of 105, some air flows into the piston chamber 105 through the connecting groove 108 and the airbag 202, reducing the squeezing force of the airbag 202 on the compression plate 201 and preventing discomfort such as coldness and numbness in the lower limbs. If the compression pressure is insufficient and the rupture continues to bleed, the blood soaks the gauze and is absorbed by the alginate in the corrugated tube 203 through the barrier cloth 204. The alginate expands rapidly upon contact with blood, squeezing the corrugated tube 203 to elongate, further pushing the compression plate 201 to increase the pressure on the rupture to temporarily stop the bleeding. At the same time, the amount of bleeding indicates that the pressure is insufficient, so that it can be adjusted in time.

[0061] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A femoral artery compressor after DSA (Digital Subtraction Angiography) in neurosurgery, comprising a support plate, characterized in that: Two support frames are fixedly installed on the upper end of one side of the support plate. A fixed frame is fixedly installed on the upper end of the two support frames. A pressing component is provided on the lower side of the middle of the fixed frame. The pressing component is used to press the opening. The pressing component includes a pressure plate located on the lower side of the fixed frame. An airbag is fixedly installed between the upper end of the pressure plate and the fixed frame. The support plate has a cavity on its side away from the fixed frame. A heat-conducting plate is embedded in the upper part of the support plate at a position corresponding to the cavity. The cavity is filled with a thermally expanding liquid. A driving assembly is installed inside the cavity. The driving assembly includes a second piston plate slidably installed inside the cavity. A connecting rod is fixedly installed at the end of the second piston plate near the fixed frame. The support frame has a piston chamber inside, and a first piston plate is slidably installed inside the piston chamber. A threaded rod is passed through the middle of the first piston plate. The connecting rod is used to drive the threaded rod to rotate when the second piston plate moves. The fixing frame has a connecting groove inside, and the upper end of the piston chamber is connected to the inside of the airbag through the connecting groove.

2. The femoral artery compressor after DSA angiography according to claim 1, characterized in that, The connecting rod has multiple pawls rotatably mounted on one end, and a gear is fixedly mounted on the lower end of the threaded rod. The connecting rod is driven by the meshing of the pawls and the gear.

3. The femoral artery compressor after DSA angiography according to claim 2, characterized in that, A return spring is fixedly installed at one end of the pawl, and the other end of the return spring is fixedly connected to the connecting rod. The return spring is used to drive the pawl to return to its original position.

4. The femoral artery compressor after DSA neurosurgical angiography according to claim 3, characterized in that, Corrugated pipes are fixedly installed on both sides of the upper end of the pressure plate. The corrugated pipes are filled with polymer material. A blocking cloth is fixedly installed at the lower end of the pressure plate at the position corresponding to the lower end of the corrugated pipe. The blocking cloth is used to block the polymer material inside the corrugated pipe. Multiple guide rods are also fixedly installed on the upper part of the pressure plate, and the guide rods pass through the fixing frame and are slidably connected to it.

5. The femoral artery compressor after DSA angiography according to claim 1, characterized in that, A clamping plate is slidably installed around the pressing plate. A tension spring is fixedly installed at one end of the clamping plate near the pressing plate, and the other end of the tension spring away from the clamping plate is fixedly connected to the pressing plate. The tension spring is used to pull the clamping plate, and the clamping plate is used to clamp the gauze.

6. The femoral artery compressor after DSA angiography according to claim 5, characterized in that, An air inlet is provided through the upper end of the fixed frame. A valve is installed inside the air inlet. The air inlet is connected to the inside of the connecting groove and is connected to the inside of the airbag through the connecting groove.

7. The femoral artery compressor after DSA angiography according to claim 6, characterized in that, The support plate has a notch in the middle, and a crossbar is provided inside the notch. The crossbar is used to support the patient's popliteal fossa.

8. The femoral artery compressor after DSA angiography according to claim 7, characterized in that, Both ends of the crossbar are fixedly installed with sliders. A fastening bolt is provided through the lower side of the slider and is threadedly connected to the slider. The fastening bolt is used to fix the slider. A groove is opened on the inner wall of the notch at the position corresponding to the slider. The crossbar is slidably connected to the slider and the groove through the slider.

9. The femoral artery compressor after DSA angiography according to claim 8, characterized in that, The end of the slide away from the crossbar extends through the support plate to its upper end, and the end of the slider away from the crossbar is fixedly installed with a fixing strap. The ends of the two fixing straps away from the slider are connected by buckles.

10. The femoral artery compressor after neurosurgical DSA according to claim 9, characterized in that, A rubber block is fixedly installed on the fixing strap, and the rubber block is used to compress the patient's knee eye area.

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