Femoral artery compression hemostasis device

Abstract

The invention relates to the technical field of medical hemostasis, in particular to a femoral artery compression hemostasis device. Comprising a supporting plate and a pressing mechanism installed at the top of the supporting plate, a bandage used for winding and fixing a thigh is arranged at the bottom of the supporting plate, the pressing mechanism comprises a rotary knob and a pressing plate arranged at the bottom of the rotary knob, and a lead screw penetrating through the rotary knob is rotationally connected to the upper portion of the pressing plate and is in threaded connection with a conical barrel located at the bottom of the rotary knob; the bottom of the pressing plate is bonded with a pressing air cushion, two ends of the top of the pressing plate are bonded with arc-shaped air cushions, and the bottom of the knob is fixedly connected with a cylindrical cover. The expanded auxiliary air cushion is located on the path where the arc-shaped air cushion expands and extends outwards and used for limiting expansion of the arc-shaped air cushion, so that the overflowing compression air cushion is extruded after the auxiliary air cushion makes contact with the arc-shaped air cushion, the compression air cushion on the longitudinal side edge is tightly attached to the puncture position, and the cold compress effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical hemostasis, in particular to a femoral artery compression hemostasis device. Background Art

[0002] After the interventional surgery, compression hemostasis is often used to stop bleeding. Its advantages are that it does not damage the vascular structure, does not require suturing or packing with gel or collagen, shortens the patient's hospital stay, and the artery can be punctured and used repeatedly. Compression hemostasis is done by doctors or medical professionals applying pressure at the puncture point of the arterial catheter, causing the blood at the ruptured blood vessel to gradually coagulate and form a blood scab, thereby effectively achieving the purpose of hemostasis.

[0003] In the prior art, in order to apply pressure to the puncture point of the artery to stop bleeding, an air bag is usually used to apply pressure to the puncture point. Compared with manual pressure application, the pressure provided by the air bag is more stable and is not easily weakened by hand shaking or fatigue.

[0004] However, when applying a cold compress to the skin around the puncture point, cooling liquid is injected into the airbag, and when the airbag is pressurized, it is often pressed against the puncture point through the top plate bonded to it. As the knob is turned, the airbag between the top plate and the skin will expand outward. When the airbag exceeds the edge bonded to the top plate, the edge of the airbag has no external force applied, resulting in a loose contact between the cooling liquid in the airbag and the skin, and the expected cold compress effect cannot be achieved. Summary of the invention

[0005] The object of the present invention is to provide a femoral artery compression hemostasis device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a femoral artery compression hemostasis device, comprising a support plate and a compression mechanism installed on the top of the support plate, a bandage for wrapping and fixing the thigh is arranged at the bottom of the support plate, the compression mechanism comprises a knob and a pressure plate arranged at the bottom of the knob, a screw rod penetrating the knob is rotatably connected above the pressure plate, the screw rod is threadedly connected to a conical cylinder located at the bottom of the knob, a compression air cushion is bonded to the bottom of the pressure plate, arc-shaped air cushions are bonded to the top two ends of the pressure plate, a cylindrical cover is fixedly connected to the bottom of the knob, when the cylindrical cover is rotated, the cylindrical cover drives a power mechanism sleeved on the outside to rotate, the power mechanism is arranged on the surface of the support plate, and the power mechanism is used to compress air into the arc-shaped air cushion connected thereto and expand the arc-shaped air cushion, under the extrusion of the conical cylinder, the auxiliary air cushion arranged on the inner side of the bandage is squeezed in cooperation with the thigh, so that the expanded auxiliary air cushion and the arc-shaped air cushion are abutted against each other to apply pressure to the conical cylinder separated from the pressure plate, thereby limiting the overflow of the conical cylinder.

[0007] As a further improvement of the present technical solution, the power mechanism includes a power ring which is mounted on the outside of the cylindrical cover and rotatably connected to the cylindrical cover, and a fixed ring which is fixed on the upper surface of the support plate and rotatably connected to the power ring. A plurality of arc-shaped protrusions are fixedly connected in an array on the bottom outer ring of the power ring, and the protrusions in the rotation direction smoothly transition from the flat head end to the protruding end to provide continuous power during the gas compression process.

[0008] As a further improvement of the present technical solution, the bottom of the conical cylinder is rotatably connected to the fixed ring, the outer ring of the bottom of the conical cylinder and the upper part of the inner wall of the power ring are fixedly connected with a first baffle, and the bottom of the cylindrical cover is fixedly connected with a plurality of second baffles in the horizontal direction and located between the upper and lower first baffles.

[0009] As a further improvement of the technical solution, one end of the second baffle extends toward the outer power ring, and the other end bends and extends downward, so that the second baffle is misaligned with the upper and lower first baffles when the cylindrical cover moves up and down.

[0010] As a further improvement of the technical solution, a movable plate slidably connected to the inner wall of the power ring is arranged above the first baffle plate on the inner wall of the power ring, a compression spring is elastically connected to the power ring at the bottom of the movable plate, and a limiting plate is rotatably connected above the inner circle of the movable plate, the limiting plate is fixedly connected to the cylindrical cover and is used to limit the cylindrical cover from detaching from the power ring.

[0011] As a further improvement of the present technical solution, a piston rod slidably connected to a fixing ring is attached to the outside of the protrusion, and the other end of the piston rod is located in a piston cavity inside the fixing ring. A return spring arranged inside the piston cavity is against the piston rod, and the return spring is used to keep the end of the piston rod in contact with the protrusion, so that the rotating protrusion can be used to push the piston rod to deliver air into the arc-shaped air cushion.

[0012] As a further improvement of the present technical solution, an exhaust channel and an air supply channel connected to the piston cavity are opened inside the fixing ring, the exhaust channel and the arc-shaped air cushion are connected by a hose, the air supply channel is connected to the outside air, and both the exhaust channel and the air supply channel are provided with a one-way valve, the one-way valve located in the air supply channel is used to allow external air to enter the piston cavity, and the one-way valve located in the exhaust channel is used to allow air in the piston cavity to enter the arc-shaped air cushion.

[0013] As a further improvement of the present technical solution, a limit baffle is symmetrically arranged inside the pressure plate and is slidably connected to the pressure plate. Under normal circumstances, the bottom of the limit baffle is retracted into the pressure plate and remains flush with the edge of the pressure plate. A connecting spring is elastically connected between the limit baffles on both sides, and the two ends of the limit baffle are respectively fitted with the two side arc-shaped air cushions on the pressure plate, so that the limit baffle can be pushed out by utilizing the expanded arc-shaped air cushion to limit the overflow of the compression air cushion.

[0014] As a further improvement of the present technical solution, the expanded auxiliary air cushion is located on the path of the arc-shaped air cushion expanding and extending outward, and is used to limit the expansion of the arc-shaped air cushion, so as to squeeze the overflowing compression air cushion after the auxiliary air cushion contacts the arc-shaped air cushion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the femoral artery compression hemostasis device, the expanded auxiliary air cushion is on the path of the arc-shaped air cushion expanding and extending outward, and is used to limit the expansion of the arc-shaped air cushion, so that the overflowing compression air cushion can be squeezed after the auxiliary air cushion contacts the arc-shaped air cushion, thereby keeping the compression air cushion on the longitudinal side in close contact with the puncture position, thereby improving the effect of cold compress.

[0016] 2. In the femoral artery compression hemostasis device, the extended limit baffle is used to squeeze and limit the compression air cushion that overflows the edge of the pressure plate, and the extended limit baffle can effectively prevent the compression air cushion from shifting during the compression process, ensuring that the compression air cushion can continuously and stably apply pressure to the puncture position, thereby increasing the contact area between the compression air cushion and the puncture position and the cold compress effect.

[0017] 3. In the femoral artery compression hemostasis device, after the expanded auxiliary air cushion comes into contact with the arc-shaped air cushion, the force generated by the two exerts a thrust on the bandage, thereby tightening the bandage and firmly fixing the bandage to the thigh, preventing the bandage from shifting when the bottom of the bandage rubs against the bed sheet, thereby affecting the cold compress. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A is an enlarged structural diagram; Figure 4 It is a schematic diagram of the cutaway internal structure of the conical cylinder, cylindrical cover, power ring and fixed ring of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in FIG. Figure 6 It is a schematic diagram of the explosion structure of the power ring and the fixed ring of the present invention; Figure 7 It is a top view of the cutaway structure of the cylindrical cover and the power ring of the present invention; Figure 8 This is a schematic diagram of the outward extension structure of the limit baffle of the present invention; Fig. 9 It is a schematic diagram of the expansion structure of the auxiliary air cushion and the arc-shaped air cushion of the present invention; Fig.10 It is a schematic diagram of the explosion structure of the pressing plate, the limiting baffle and the connecting spring of the present invention.

[0019] The meaning of each number in the figure is: 100. support plate; 110. bandage; 120, compression mechanism; 121, knob; 122, pressure plate; 123, screw rod; 124, compression air cushion; 130, auxiliary air cushion; 140, conical cylinder; 141, first baffle; 150, cylindrical cover; 151, second baffle; 152, limit plate; 160, piston rod; 161, return spring; 162, one-way valve; 170, arc-shaped air cushion; 171, limit baffle; 172, connecting spring; 200, power mechanism; 210, power ring; 211, protrusion; 212, compression spring; 213, movable plate; 220, fixing ring; 221, exhaust channel; 222, air supply channel. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 , Figure 2 and Figure 4 As shown, a femoral artery compression hemostasis device is provided, including a support plate 100 and a compression mechanism 120 installed on the top of the support plate 100, a bandage 110 for wrapping and fixing the thigh is arranged at the bottom of the support plate 100, the compression mechanism 120 includes a knob 121 and a pressure plate 122 arranged at the bottom of the knob 121, a screw rod 123 passing through the knob 121 is rotatably connected above the pressure plate 122, the screw rod 123 is threadedly connected to a conical cylinder 140 located at the bottom of the knob 121, and a cylindrical cover 150 is fixedly connected to the bottom of the knob 121.

[0022] During the process of applying pressure to stop bleeding at the patient's puncture site, the support plate 100 is first moved to the puncture site, and then the bandage 110 is wrapped around the thigh and connected to the support plate 100. The cylindrical cover 150 is driven to rotate by turning the knob 121, and the cylindrical cover 150 drives the conical cylinder 140 to rotate to adjust the extended length of the screw rod 123, so as to control the descending distance of the pressure plate 122, that is, to control the pressure of the pressure plate 122 on the thigh puncture site.

[0023] Secondly, in order to improve the patient's comfort, a compression air cushion 124 is bonded to the bottom of the pressure plate 122. The contact mode of applying pressure to the skin by the compression air cushion 124 is more comfortable, which can reduce the discomfort that may be caused to the patient due to direct pressure with hands.

[0024] Next, applying pressure to the patient's puncture site can be divided into two processes, as shown below: First of all, it should be noted that: under normal circumstances, the cylindrical cover 150 is in a no-load state, that is, the cylindrical cover 150 will not drive the conical cylinder 140 and the power mechanism 200 to rotate, and the compression air cushion 124 will not move downward to apply pressure at this time. This can prevent the pressure of the compression air cushion 124 on the thigh from increasing or decreasing due to accidental touch after the pressure to stop bleeding is adjusted.

[0025] First, by pressing the knob 121 downward to move the cylindrical cover 150 downward, the cylindrical cover 150 can contact the conical tube 140 and drive the conical tube 140 to rotate, so as to control the pressure of the compression air cushion 124 on the puncture position.

[0026] Secondly, by pulling the knob 121 upward, the cylindrical cover 150 moves upward, the cylindrical cover 150 is separated from the conical cylinder 140, and the cylindrical cover 150 is combined with the conical cylinder 140 on the basis of the above. Fig. 9 As shown, arc-shaped air cushions 170 are bonded to the two ends of the top of the pressure plate 122. When the cylindrical cover 150 is rotated, the cylindrical cover 150 drives the power mechanism 200 on the outside to rotate. The power mechanism 200 is arranged on the surface of the support plate 100, and the power mechanism 200 is used to compress the air into the arc-shaped air cushion 170 connected thereto and expand the arc-shaped air cushion 170. Under the extrusion of the conical cylinder 140, the auxiliary air cushion 130 arranged on the inner side of the bandage 110 is squeezed in cooperation with the thigh, so that the expanded auxiliary air cushion 130 and the arc-shaped air cushion 170 are abutted against each other and then pressure is applied to the conical cylinder 140 separated from the pressure plate 122, thereby limiting the overflow of the conical cylinder 140, thereby keeping the conical cylinder 140 in contact with the skin and improving the cold compress effect.

[0027] Therefore, based on the above structure, the structure of the power mechanism 200 is disclosed. The power mechanism 200 includes a power ring 210 that is sleeved on the outside of the cylindrical cover 150 and rotatably connected to the cylindrical cover 150, and a fixed ring 220 that is fixed on the upper surface of the support plate 100 and rotatably connected to the power ring 210. A plurality of arc-shaped protrusions 211 are fixedly connected to the bottom outer ring of the power ring 210 in an array, and the protrusions 211 in the rotation direction smoothly transition from the flat head end to the protruding end to provide continuous power during the gas compression process.

[0028] In addition, the bottom of the conical cylinder 140 is rotatably connected to the fixing ring 220 (refer to Figure 4 and Figure 6 As shown, the outer ring of the bottom of the conical cylinder 140 and the upper inner wall of the power ring 210 are fixedly connected with a first baffle 141, and the bottom of the cylindrical cover 150 is fixedly connected with a plurality of second baffles 151 in the horizontal direction and located between the upper and lower first baffles 141. One end of the second baffle 151 extends toward the outer power ring 210, and the other end is bent and extended downward, so that when the cylindrical cover 150 moves up and down, the second baffle 151 is misaligned with the upper and lower first baffles 141 (refer to Figure 7 as shown).

[0029] During specific use, the cylindrical cover 150 is rotated to make the second baffle 151 at the bottom of the cylindrical cover 150 misaligned with the first baffle 141 on the conical cylinder 140 to prevent the first baffle 141 on the conical cylinder 140 from overlapping with the second baffle 151. The first baffle 141 supports the second baffle 151, affecting the descent of the second baffle 151. Then, the height of the cylindrical cover 150 is lowered to make the second baffle 151 misaligned with the first baffle 141 during rotation. Therefore, the screw rod 123 is pushed downward by the rotation of the conical cylinder 140, and during the downward movement of the pressure plate 122, that is, when the compression air cushion 124 has not yet contacted the thigh, there will be friction due to the rotational connection between the screw rod 123 and the pressure plate 122. In order to prevent the rotating screw rod 123 from driving the pressure plate 122 to rotate together, the pressure plate 122 is manually intervened during the descent of the pressure plate 122 to prevent the pressure plate 122 from being offset and affecting the coverage of the puncture position.

[0030] The above is the first process of applying pressure to the puncture. In normal conditions, in order to prevent the situation where the knob 121 is accidentally touched, the pressure of the compression air cushion 124 on the thigh is increased or weakened, which affects the effect of wound healing and cold compress. Figure 4 Based on and combined with Figure 5 As shown, a movable plate 213 is provided above the first baffle 141 on the inner wall of the power ring 210, and a compression spring 212 is elastically connected to the power ring 210 at the bottom of the movable plate 213, and a limit plate 152 is rotatably connected above the inner circle of the movable plate 213. The limit plate 152 is fixedly connected to the cylindrical cover 150 and is used to limit the cylindrical cover 150 from detaching from the power ring 210.

[0031] for Figure 4 For the cylindrical cover 150, supported by multiple compression springs 212, the cylindrical cover 150 is in a balanced state at this time, and the second baffle 151 is located between the upper and lower first baffles 141 in the horizontal direction. Even if the cylindrical cover 150 rotates due to human error, the second baffle 151 will not drive the conical cylinder 140 or the power ring 210 to rotate, thereby ensuring the stability and continuity of the cold compress therapy.

[0032] Furthermore, in order to improve the effect of cold compress on the puncture site, the following is an explanation of the second process of puncture pressure application, and combined with Figure 3 , Figure 6 , Figure 8 and Fig. 9 Embodiment 2 of the present invention is shown in conjunction with the following: First, according to Figure 3 As shown, a piston rod 160 slidably connected to a fixing ring 220 is attached to the outside of the protrusion 211, and the other end of the piston rod 160 is located in a piston cavity provided inside the fixing ring 220. A return spring 161 provided inside the piston cavity abuts against the piston rod 160. The return spring 161 is used to keep the end of the piston rod 160 in contact with the protrusion 211, so as to utilize the rotating protrusion 211 to push the piston rod 160 to deliver air to the arc-shaped air cushion 170. On the other hand, an exhaust channel 221 and an air supply channel 222 connected to the piston cavity are opened inside the fixing ring 220. The exhaust channel 221 is connected to the arc-shaped air cushion 170 through a hose, and the air supply channel 222 is connected to the external air. Both the exhaust channel 221 and the air supply channel 222 are provided with a one-way valve 162. The one-way valve 162 located in the air supply channel 222 is used to allow external air to enter the piston cavity, and the one-way valve 162 located in the exhaust channel 221 is used to allow air in the piston cavity to enter the arc-shaped air cushion 170.

[0033] In the opposite direction of the process of adjusting the pressure of the compression air cushion 124 on the thigh, before the air in the piston chamber is delivered to the arc-shaped air cushion 170, it is also necessary to Figure 4 The cylindrical cover 150 in the power ring 210 is pushed upward, so that the end of the second baffle 151 extending toward the inner wall of the power ring 210 is misaligned with the first baffle 141 fixed on the inner wall of the power ring 210, and then Figure 5 The middle limit plate 152 limits the excessive upward movement of the cylindrical cover 150 to prevent the cylindrical cover 150 from separating from the power ring 210, and then the cylindrical cover 150 is used to drive the power ring 210 to rotate, and the rotation process will not affect the stability of the compression air cushion 124 exerting pressure on the thigh.

[0034] Working principle: When the second baffle 151 is misaligned with the first baffle 141, the power ring 210 is rotated synchronously with the cylindrical cover 150. During this process, the end of the piston rod 160 smoothly transitions from the head end of the protrusion 211 to the end. It is worth noting that when the end of the piston rod 160 is detached from the end of the protrusion 211, the other end of the piston rod 160 completes an air supply process and an air intake process, that is, each time the end of the piston rod 160 passes through a protrusion 211, it delivers a stream of air to the arc-shaped air cushion 170. Secondly, under the elastic action of the return spring 161, the piston rod 160 is pushed in the reverse direction to move. On the one hand, the end of the piston rod 160 can maintain contact with the protrusion 211, and on the other hand, the air supply channel 222 can be used to draw external air into the piston cavity to provide air for the next air supply process.

[0035] As air is continuously injected into the arc-shaped air cushion 170, the arc-shaped air cushion 170 gradually expands. Since the compression air cushion 124 between the pressure plate 122 and the thigh will expand outward after being compressed, when the compression air cushion 124 exceeds the edge bonded to the pressure plate 122, the edge of the compression air cushion 124 has no external force applied at this time, resulting in the coolant in the compression air cushion 124 not being in close contact with the thigh surface, and the expected cooling effect cannot be achieved.

[0036] Then, return to Figure 8 As shown, a limit baffle 171 is symmetrically arranged in the pressing plate 122 and is slidably connected to the pressing plate 122. Under normal conditions, the bottom of the limit baffle 171 is retracted into the pressing plate 122 and remains flush with the edge of the pressing plate 122 (refer to Fig.10 As shown in the figure, a connecting spring 172 is elastically connected between the limiting baffles 171 on both sides, and the two ends of the limiting baffle 171 are respectively fitted with the arc-shaped air cushions 170 on both sides of the pressure plate 122, so that the limiting baffle 171 can be pushed out by the expanded arc-shaped air cushion 170 to limit the overflowing compression air cushion 124. In this way, when the arc-shaped air cushion 170 on the pressure plate 122 gradually expands, the arc-shaped air cushion 170 overcomes the elastic potential energy of the pressure plate 122 and pushes the limiting baffle 171 outward, so that the limiting baffle 171 exceeds the edge of the pressure plate 122 and extends outward (the width of the pressure plate 122 under normal conditions is w), and the extended limiting baffle 171 squeezes and restricts the compression air cushion 124 that overflows the edge of the pressure plate 122, and the extended limiting baffle 171 can effectively prevent the compression air cushion 124 from shifting during the compression process, ensuring that the compression air cushion 124 can continuously and stably apply pressure to the puncture position, thereby increasing the contact area between the compression air cushion 124 and the puncture position and the cooling effect.

[0037] It is supplemented by: Figure 8For reference, the two side edges in the width w direction of the pressing plate 122 are called longitudinal side edges, and the two side edges in the length direction of the pressing plate 122 are called transverse side edges, hereinafter referred to as transverse side edges and longitudinal side edges.

[0038] In addition, it should be noted that when the pressure plate 122 moves downward to cause the compression air cushion 124 to apply pressure to the puncture site, the lateral sides of the compression air cushion 124 will also overflow outward, thereby causing the lateral sides of the compression air cushion 124 to be unable to fit tightly against the puncture site, affecting the cold compress. Therefore, after the thigh is squeezed by the compression air cushion 124, the auxiliary air cushion 130 is squeezed outward, causing the top of the auxiliary air cushion 130 to expand and extend outward, and the expanded auxiliary air cushion 130 is on the path of the arc air cushion 170 expanding and extending outward, which is used to limit the expansion of the arc air cushion 170, so as to utilize the auxiliary air cushion 130 to squeeze the overflowing compression air cushion 124 after contacting the arc air cushion 170, thereby keeping the longitudinal sides of the compression air cushion 124 in close contact with the puncture site, thereby improving the effect of the cold compress. Among them, the direction of expansion of the auxiliary air cushion 130 after contacting the arc air cushion 170 is as follows: Fig. 9 As shown in g1 and g2.

[0039] Correspondingly, after the expanded auxiliary air cushion 130 contacts the arc-shaped air cushion 170, the force generated by the two will also apply a thrust to the bandage 110 outward along the direction of g2. If the expanded arc-shaped air cushion 170 contacts the support plate 100, a gap will be formed between the support plate 100, the auxiliary air cushion 130 and the arc-shaped air cushion 170. After the auxiliary air cushion 130 contacts the arc-shaped air cushion 170, it will expand outward to fill the gap, thereby tightening the bandage 110 and firmly fixing the bandage 110 to the thigh, preventing the bandage 110 from shifting when the bottom of the bandage 110 rubs against the bed sheet, thereby affecting the cold compress.

[0040] Finally, return to Figure 8 and Fig. 9 As shown, when compression hemostasis is completed, the air in the arc-shaped air cushion 170 is released by opening the valves connecting the catheters on both sides, so that the arc-shaped air cushion 170 is reset, and at the same time, the compression air cushion 124 moves upward and detaches from the puncture site, and the device is withdrawn from the thigh.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A femoral artery compression hemostasis device, comprising a support plate (100) and a compression mechanism (120) mounted on the top of the support plate (100), a bandage (110) for wrapping and fixing the thigh is arranged at the bottom of the support plate (100), the compression mechanism (120) comprises a knob (121) and a compression plate (122) arranged at the bottom of the knob (121), a screw rod (123) penetrating the knob (121) is rotatably connected above the compression plate (122), the screw rod (123) is threadedly connected to a conical cylinder (140) located at the bottom of the knob (121), and the characteristics are: A compression air cushion (124) is bonded to the bottom of the pressure plate (122), arc-shaped air cushions (170) are bonded to the top two ends of the pressure plate (122), and a cylindrical cover (150) is fixedly connected to the bottom of the knob (121). When the cylindrical cover (150) is rotated, the cylindrical cover (150) drives a power mechanism (200) sleeved on the outside to rotate. The power mechanism (200) is arranged on the surface of the support plate (100), and the power mechanism (200) 00) is used to compress air into the arc-shaped air cushion (170) connected thereto and expand the arc-shaped air cushion (170). Under the squeezing of the conical tube (140), the auxiliary air cushion (130) arranged on the inner side of the bandage (110) is squeezed in cooperation with the thigh, so that the expanded auxiliary air cushion (130) and the arc-shaped air cushion (170) are abutted against each other and then pressurize the conical tube (140) separated from the pressure plate (122), thereby limiting the overflow of the conical tube (140).

2. The femoral artery compression hemostasis device according to claim 1, characterized in that: The power mechanism (200) comprises a power ring (210) sleeved on the outside of the cylindrical cover (150) and rotatably connected to the cylindrical cover (150), and a fixing ring (220) fixed on the upper surface of the support plate (100) and rotatably connected to the power ring (210), wherein a plurality of arc-shaped protrusions (211) are fixedly connected in an array to the bottom outer ring of the power ring (210), and the protrusions (211) in the rotation direction smoothly transition from a flat head end to a protruding end, so as to provide continuous power during the process of compressing gas.

3. The femoral artery compression hemostasis device according to claim 2, characterized in that: The bottom of the conical cylinder (140) is rotatably connected to the fixing ring (220); the outer ring of the bottom of the conical cylinder (140) and the upper part of the inner wall of the power ring (210) are both fixedly connected with a first baffle (141); and the bottom of the cylindrical cover (150) is fixedly connected with a plurality of second baffles (151) in a horizontal direction and located between the upper and lower first baffles (141).

4. The femoral artery compression hemostasis device according to claim 3, characterized in that: One end of the second baffle (151) extends toward the outer power ring (210), and the other end bends and extends downward, so that when the cylindrical cover (150) moves up and down, the second baffle (151) and the upper and lower first baffles (141) are misaligned.

5. The femoral artery compression hemostasis device according to claim 3, characterized in that: A movable plate (213) slidably connected to the inner wall of the power ring (210) is arranged above the first baffle (141) on the inner wall of the power ring (210); a compression spring (212) is elastically connected to the power ring (210) at the bottom of the movable plate (213); and a limit plate (152) is rotatably connected above the inner circle of the movable plate (213); the limit plate (152) is fixedly connected to the cylindrical cover (150) and is used to limit the cylindrical cover (150) from being separated from the power ring (210).

6. The femoral artery compression hemostasis device according to claim 2, characterized in that: A piston rod (160) slidably connected to a fixing ring (220) is attached to the outside of the protrusion (211); the other end of the piston rod (160) is located in a piston cavity inside the fixing ring (220); a return spring (161) arranged inside the piston cavity abuts against the piston rod (160); the return spring (161) is used to keep the end of the piston rod (160) in contact with the protrusion (211), so that the rotating protrusion (211) can be used to push the piston rod (160) to transport air into the arc-shaped air cushion (170).

7. The femoral artery compression hemostasis device according to claim 6, characterized in that: An exhaust channel (221) and an air supply channel (222) communicating with the piston chamber are provided inside the fixing ring (220); the exhaust channel (221) is connected to the arc-shaped air cushion (170) via a hose; the air supply channel (222) is connected to the external air; and both the exhaust channel (221) and the air supply channel (222) are provided with a one-way valve (162); the one-way valve (162) located in the air supply channel (222) is used to allow external air to enter the piston chamber, and the one-way valve (162) located in the exhaust channel (221) is used to allow air in the piston chamber to enter the arc-shaped air cushion (170).

8. The femoral artery compression hemostasis device according to claim 1, characterized in that: A limit baffle (171) is symmetrically arranged in the pressure plate (122) and is slidably connected to the pressure plate (122). Under normal conditions, the bottom of the limit baffle (171) is retracted into the pressure plate (122) and remains flush with the edge of the pressure plate (122). A connecting spring (172) is elastically connected between the limit baffles (171) on both sides, and the two ends of the limit baffle (171) are respectively fitted with the arc-shaped air cushions (170) on both sides of the pressure plate (122) so that the limit baffle (171) can be pushed out by utilizing the expanded arc-shaped air cushion (170) to limit the overflow of the pressure air cushion (124).

9. The femoral artery compression hemostasis device according to claim 1, characterized in that: The expanded auxiliary air cushion (130) is located on the path of the arc-shaped air cushion (170) extending outwardly as it expands, and is used to limit the expansion of the arc-shaped air cushion (170), so as to squeeze the overflowing compression air cushion (124) after the auxiliary air cushion (130) contacts the arc-shaped air cushion (170).

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