Air pressure type radial artery hemostat with visual pressure and automatic pressure reduction function

Abstract

The air pressure type radial artery hemostat comprises a hemostat body which is detachably arranged on the wrist of a patient and provided with a plurality of compression air bags, and the multiple compression air bags are provided with puncture mark points which are arranged in a connected mode so as to be matched with the radial artery puncture position of the patient. The hemostat body is provided with inflation ports communicated with the multiple compression air bags, the inflation ports are communicated with a control air valve through an air pipe, the control air valve has multiple quantitative deflation modes for automatic pressure reduction, and the end, away from the air pipe, of the control air valve is connected with an inflation device. A pressure visible structure is arranged between the control air valve and the air pipe to reflect the hemostasis pressure applied to the wound of the patient by the multiple compression air bags. According to the radial artery compression hemostat, initial pressure applied to a wound of a patient can be visually and quantitatively displayed, the applied pressure can be automatically adjusted according to the compression hemostasis condition of the patient, meanwhile, compared with a traditional radial artery compression hemostat, the manufacturing cost is not remarkably increased, and the use requirements of clinicians are met.

Description

Technical Field

[0001] This invention relates to a pneumatic radial artery hemostat with visual automatic decompression, belonging to the field of medical device technology. Background Technology

[0002] Immediately after the PCI procedure, the surgeon needs to apply a hemostat to the radial artery wound and set an initial pressure to achieve radial artery hemostasis. At the same time, medical staff need to adjust the pressure of the hemostat as needed based on the patient's wound hemostasis status to better restore blood flow to the wound vessels and surrounding tissues and avoid related complications.

[0003] However, due to individual differences among patients, the initial pressure required for hemostasis of radial artery wounds varies. When the pressure applied by the hemostat is too high, it can cause complications such as hematoma and tissue necrosis. When the pressure applied by the hemostat is too low, it can cause continuous bleeding or oozing from the wound, making it impossible to stop the bleeding effectively. Both situations add extra pain to the patient and are not conducive to the patient's postoperative recovery.

[0004] Currently, mainstream radial artery hemostatic devices are mainly conventional inflatable or mechanically tightened devices without pressure indication. Operators typically need to adjust the inflation volume or mechanical tightness of the device based on clinical experience to set the initial pressure on the patient's radial artery wound, using the absence of bleeding as the criterion for initial pressure setting. After a certain period, the pressure is manually reduced appropriately based on the patient's bleeding control to facilitate better blood flow restoration. In summary, existing radial artery compression hemostatic devices suffer from problems such as invisible and unquantifiable pressure application, and the need for frequent manual pressure adjustments, increasing the workload of medical staff and increasing the risk of complications such as numbness, swelling, and radial artery occlusion due to forgetting the pressure adjustment time. In addition, newer pressure-visible and automatically depressurizing radial artery compression hemostatic devices exist. These devices add pressure sensors and touch displays to conventional hemostatic devices to achieve pressure control and automatic depressurization, assisting operators in visually setting the initial pressure and promptly reminding medical staff to make adjustments. However, this type of hemostat has not been truly industrialized, mainly because its manufacturing cost far exceeds that of conventional hemostats. Radial artery compression hemostats are widely used medical consumables for post-PCI adjuvant therapy, and their manufacturing cost needs to be reduced as much as possible while meeting clinical needs, so as to reduce the cost of PCI surgery for patients. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a pneumatic radial artery hemostat with visual and automatic pressure reduction. It not only displays the initial applied pressure visually and quantitatively, but also automatically adjusts the applied pressure according to the patient's compression hemostasis status. At the same time, it does not significantly increase the manufacturing cost compared to traditional radial artery compression hemostats, meeting the needs of clinicians, reducing postoperative complications, and accelerating postoperative recovery.

[0006] To achieve the above-mentioned technical objectives and effects, this application provides the following technical solution:

[0007] A pressure-visible, automatically decompressible pneumatic radial artery hemostat includes a hemostat body detachably mounted on the patient's wrist. The hemostat body has multiple compression bladders, each with a connected puncture marker to match the patient's radial artery puncture location. The hemostat body has an inflation port communicating with the multiple compression bladders. The inflation port is connected to a control valve via an air tube. The control valve has multiple quantitative deflation modes for automatic decompression. The end of the control valve facing away from the air tube is detachably connected to an inflation device. A pressure-visible structure is provided between the control valve and the air tube to reflect the hemostatic pressure applied by the multiple compression bladders at the patient's wound.

[0008] Preferably, the pressure visualization structure includes a pressure indicating balloon and a pressure display scale. The pressure indicating balloon is nested on the outer wall of the trachea. The outer wall of the overlapping area between the trachea and the pressure indicating balloon is provided with multiple air holes communicating with the pressure indicating balloon. The pressure indicating balloon is covered with the pressure display scale, which is a transparent and visible structure. The inner walls at both ends of the pressure display scale are respectively connected and fixed to the outer wall of the trachea and the control valve, but are not interconnected.

[0009] Furthermore, the inner walls at both ends of the pressure gauge are respectively bonded to the outer walls of the air pipe and the control valve, with air permeability gaps provided.

[0010] Preferably, the control valve includes a valve body, a valve core, a valve cap, and a valve buckle. The valve body has a channel connecting the air pipe and the inflation device. The valve cap is fixedly connected to the end of the valve body away from the air pipe. The valve buckle is rotated between the valve cap and the valve body. The valve core is embedded at the end of the valve buckle away from the valve cap. A valve port communicating with the inflation device is opened in the middle of the valve cap. A vent communicating with the valve port and the channel is provided in the middle of the valve core. The inner wall of the end of the valve buckle where the valve core is embedded is threadedly connected to the valve body. The valve core is a high-elasticity core and is locked between the end face of the valve body and the inner bottom wall of the valve buckle. The vent gradually decreases as the valve buckle is turned toward the air pipe.

[0011] Furthermore, the valve cap and the valve buckle are fitted with a transition fit. The valve cap is provided with multiple valve status indicator marks to correspond to multiple exhaust flows. The outer wall of the valve buckle is provided with an indicator position mark. When the indicator position mark matches any of the valve status indicator marks, the gas flow of the vent is consistent with the flow marked at the valve status indicator mark.

[0012] Furthermore, the valve status indicators include four valve status indicators arranged in a circular array: fully open, fully closed, 6h pressure relief to 0mmHg, and 3h pressure relief to 0mmHg.

[0013] Furthermore, the inflation device includes a syringe outer sleeve, a core rod, a piston, a needle seat, and a needle tube. The syringe outer sleeve is hollow and has openings at both ends. One end of the core rod is slidably inserted into the syringe outer sleeve, and the other end extends out of the syringe outer sleeve. The piston is located at the end of the core rod that extends into the syringe outer sleeve. The outer wall of the syringe outer sleeve is provided with a scale strip. The opening at the end of the syringe outer sleeve opposite to the core rod insertion end is connected to the needle tube through the needle seat. The needle tube is used to connect with the valve port to connect the air tube and the inner cavity of the syringe outer sleeve. A protective sleeve is detachably provided on the outside of the needle tube.

[0014] Furthermore, the valve core includes, but is not limited to, a core made of silicone or rubber.

[0015] Preferably, the hemostat body has a double-layered open structure, and a rigid liner is detachably inserted between the double-layered structure of the hemostat body. Multiple compression airbags are disposed on the outer wall of the side layer of the hemostat body that contacts the human skin, and the puncture mark is disposed on the side of the compression airbag that is away from the hemostat body.

[0016] Preferably, the hemostat body is provided with wristbands on both sides, and the wristbands on both sides are provided with Velcro components for use.

[0017] The pneumatic radial artery hemostat with visual automatic decompression provided by this invention has the following advantages:

[0018] This invention adds a pressure-indicating balloon, a pressure scale, and a control valve to a conventional radial artery hemostat. Through different materials and structural designs, it assists surgeons in visually and quantitatively setting the pressure of the hemostat on the patient's radial artery wound. Simultaneously, the control valve helps medical staff automatically adjust the radial artery hemostat pressure post-operatively, reducing patient complications and relieving surgeons of the workload of frequently deflating the hemostat. Furthermore, compared to traditional radial artery hemostats, its manufacturing cost is not significantly increased, reducing surgical expenses for patients and alleviating the burden on medical insurance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a pneumatic radial artery hemostat with visual automatic decompression provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the inflation device provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the connection structure between the pressure visualization structure and the air pipe and control valve provided in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of the pressure-indicating balloon inflating to contact the pressure scale;

[0023] Figure 5 This is an enlarged schematic diagram of the surface pressure scale structure of the pressure scale provided in an embodiment of the present invention;

[0024] Figure 6 This is a diagram illustrating the expansion state of the pressure-indicating balloon as the internal air pressure increases, provided in an embodiment of the present invention.

[0025] Figure 7 A schematic diagram of the fully inflated state of the pressure-indicating balloon when the internal air pressure increases, as provided in an embodiment of the present invention.

[0026] Figure 8 A schematic diagram of the interface between the pressure indicating balloon and the pressure scale.

[0027] Figure 9 This is a diagram showing the internal structure of the control valve provided in an embodiment of the present invention;

[0028] Figure 10 A diagram showing the compression state of the valve core inside the control valve provided in an embodiment of the present invention;

[0029] Figure 11 This is a diagram showing the fully compressed state of the valve core inside the control valve provided in an embodiment of the present invention.

[0030] Figure 12 Diagram showing the valve cap and valve core vents fully closed;

[0031] Figure 13 This diagram shows the correspondence between the valve status indicator and the position indicator on the valve latch.

[0032] In the picture:

[0033] 1-Hemostat body; 11-Wristband; 12-Inflation port; 2-Puncture marker; 3-Compression balloon; 4-Trachea; 41-Air hole; 5-Control valve; 51-Valve body; 511-Channel; 52-Valve core; 521-Air vent; 53-Valve cap; 531-Valve port; 54-Valve buckle; 541-Indicator position mark; 6-Inflation device; 61-Syringe outer sleeve; 62-Core rod; 63-Piston; 64-Needle seat; 65-Needle tube; 7-Pressure visual structure; 71-Pressure indicating balloon; 72-Pressure display scale; 8-Valve status indicator mark; 9-Rigid liner; 10-Protective sleeve; 14-Outer sleeve rolled edge; 15-Hand; 16-Hook and loop fastener assembly. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1 and Figure 2 The pneumatic radial artery hemostat with visible automatic decompression includes a hemostat body 1. Both sides of the hemostat body 1 are integrally formed with wristbands 11. The wristbands 11 on both sides are equipped with Velcro components 16 for use, so that the hemostat body 1 can be detachably tied to the patient's wrist. The side of the hemostat body 1 that is in contact with the human body has a puncture mark 2.

[0036] Multiple compression balloons 3 are installed on the hemostat body 1. The multiple compression balloons 3 have a connection point. The connection point of the multiple compression balloons 3 is used as the puncture mark point 2 to match the radial artery puncture position of the patient. This makes it easier to quickly align the compression hemostasis point of the hemostat with the radial artery puncture position of the patient after the PCI operation. This makes the compression positioning hemostasis of the hemostat body 1 more convenient and faster. The multiple compression balloons 3 form a pressure at the puncture mark point 2 by inflation and deflation.

[0037] The hemostat body 1 is provided with an inflation port 12 that communicates with multiple compression airbags 3. The inflation port 12 is connected to a control valve 5 through an air tube 4. The control valve 5 has multiple quantitative deflation modes for automatic decompression. The end of the control valve 5 away from the air tube 4 is detachably connected to an inflation device 6. A pressure visualization structure 7 is installed between the control valve 5 and the air tube 4 to reflect the hemostatic pressure applied by the multiple compression airbags 3 at the patient's wound, thereby realizing the pressure visualization and automatic decompression function of the pneumatic radial artery hemostat.

[0038] Furthermore, the hemostat body 1 has a double-layered opening structure, with a rigid liner 9 detachably inserted between the double-layered structure of the hemostat body 1. Multiple compression airbags 3 are bonded and fixed to the outer wall of the layered structure on the side of the hemostat body 1 that contacts the human skin. The puncture mark 2 is formed on the side of the compression airbag 3 away from the hemostat body 1. In this embodiment, the compression airbag 3 is preferably two airbags, one large and one small. After the compression airbag 3 is inflated, it is restrained by the rigid liner 9 installed and embedded in the hemostat body 1, forming pressure on the puncture mark 2, thereby indirectly forming pressure on the radial artery puncture wound of the patient to achieve the purpose of hemostasis.

[0039] Reference Figures 3-8The pressure visualization structure includes a pressure indicating balloon 71 and a pressure display scale 72. The pressure indicating balloon 71 is nested on the outer wall of the end of the trachea 4 near the control valve 5. Multiple air holes 41 communicating with the pressure indicating balloon 71 are provided on the outer wall of the overlapping area between the trachea 4 and the pressure indicating balloon 71. Specifically, air holes 41 are provided on all four sides of the trachea 4 at the midpoint of the axial region where the pressure indicating balloon 71 overlaps with the trachea 4. This allows gas to flow through the air holes 41 to the pressure indicating balloon 71 when the trachea 4 is inflated, thus subjecting it to air pressure. The pressure indicating balloon 71 is covered with an outer sleeve... A transparent, visible internal balloon pressure gauge 72 displays the inflation and deflation status of the balloon. The inner walls of both ends of the pressure gauge 72 are fixedly connected to the outer walls of the trachea 4 and the control valve 5, respectively, but are not interconnected. Specifically, the inner walls of both ends of the pressure gauge 72 are bonded to the outer walls of the trachea 4 and the control valve 5, respectively, with a permeable gap. This makes the two ends of the pressure gauge 72 not completely sealed, allowing the gas inside to be released when the pressure indicating balloon 71 inflates without affecting the inflation of the pressure indicating balloon 71. The gas is only in the trachea 4, the pressure indicating balloon 71, and the pressure balloon, and the air pressure of the three is similar to that of a communicating vessel and equal.

[0040] Furthermore, the pressure-indicating balloon 71 is made of a highly elastic material, preferably such as natural latex, silicone, or TPU, which expands under air pressure, and its expansion volume changes accordingly with changes in air pressure. Figure 4 The image shows the balloon after it has inflated under air pressure. The pressure scale 72 is made of a transparent material, preferably PVC or glass, and has pressure graduations on its surface. Figure 5 As shown, the initial value of its scale is 0 mmHg, which is aligned with the middle position of the axial length of the internal pressure indicating balloon 71. The scale 0 mmHg is the starting point for symmetrical expansion to 40 mmHg on both sides. The purpose is that after the pressure indicating balloon 71 is inflated, its axial middle position will be the first to contact the pressure reading scale 72.

[0041] Reference Figure 4 As the pressure increases further, the pressure indicating balloon 71, restrained by the pressure display scale 72, will gradually expand symmetrically to both sides from the midpoint of its axial length. For example... Figure 6 and Figure 7 As shown, the pressure indicating balloon 71 expands in volume after being subjected to internal air pressure and comes into contact with the pressure scale 72 to form an interface, which corresponds one-to-one with the pressure graduations. Figure 8As shown, the pressure on the patient's radial artery wound originates from the compression balloon 3. The air pressure inside the compression balloon 3 is equal to the air pressure inside the trachea 4 and the pressure indicating balloon 71. Therefore, the hemostatic pressure from the hemostat on the patient's radial artery wound is indirectly converted into a pressure scale on the pressure display scale 72. The operator can directly observe the pressure scale at the interface between the pressure indicating balloon 71 and the pressure display scale 72 to read the hemostatic pressure exerted by the hemostat on the patient, thus visualizing the pressure exerted by the radial artery hemostat on the patient's radial artery wound. Based on individual differences among patients, the operator can adjust the inflation volume by directly reading the pressure at the corresponding interface on the pressure display scale 72, setting the initial hemostatic pressure on the patient's radial artery wound to achieve individualized hemostatic pressure application, thereby achieving hemostasis while reducing corresponding complications.

[0042] Reference Figures 9-13 The control valve 5 includes a cylindrical valve body 51, a valve core 52, a valve cap 53, and a valve buckle 54. The valve body 51 has a channel 511 connecting the air pipe 4 and the inflation device 6. The valve cap 53 is fixedly connected to the end of the valve body 1 away from the air pipe 4 by a snap-fit ​​or ultrasonic welding. The valve buckle 54 is rotated between the valve cap 53 and the valve body 1. An opening is provided on the outer wall of the valve cap 53 for the operator to rotate the valve buckle 54. The valve core 52 is embedded at the end of the valve buckle 54 away from the valve cap 53. A valve port 531 communicating with the inflation device 6 is provided in the middle of the valve cap 53. A vent 521 communicating with the valve port 531 and the channel 511 is provided in the middle of the valve core 52. The valve buckle 54 is embedded with a valve core 54. One end of the inner wall of the core 52 is threaded to the valve body 51. The valve buckle 54 has a connecting port that connects the vent 521 and the valve port 531. The valve core 52 is made of a high-elastic material and is locked between the end face of the valve body 51 and the inner bottom wall of the valve buckle 54. When the valve buckle 54 is rotated, the valve buckle 54 and the valve body 51 will move relative to each other. When the valve buckle 54 is turned toward the air pipe 4, the vent 521 gradually decreases until it is closed. Conversely, when the valve buckle 54 is turned away from the air pipe 4, the vent 521 gradually increases until it is fully opened. In this embodiment, the valve core 52 includes, but is not limited to, a silicone or rubber material core. When the vent 521 is at its maximum, it is the same size as the inner hole 511 of the valve body 51.

[0043] Furthermore, the valve cap 53 is provided with multiple valve status indicator marks 8 to correspond to multiple exhaust flows, and the outer wall of the valve buckle 54 is provided with an indicator position mark 541. When the indicator position mark 541 matches any valve status indicator mark 8, the gas flow of the vent 521 is consistent with the flow marked at the valve status indicator mark 8. In this embodiment, there are preferably four valve status indicator marks 8, including four valve status indicator marks 8 arranged in a circular array: fully open, fully closed, 6h pressure relief to 0mmHg, and 3h pressure relief to 0mmHg.

[0044] Reference Figure 10At this time, the pressure of the compression bladder 3 is gradually decreasing, and the pressure decrease of the radial artery wound can be observed in real time through the pressure scale 72. When the valve buckle 54 is rotated at a certain angle, the valve core 52 is compressed until the middle channel is completely compressed, and the valve port 531 is closed.

[0045] like Figure 11 As shown, the air pressure inside the compression cuff 3 is stable at this time, and the pressure on the patient's radial artery wound remains constant. The pressure value can be directly viewed through the pressure scale 72. Because the radial artery hemostasis has been achieved for a period of time, it is necessary to adjust the pressure of the radial artery hemostat in a timely manner, that is, to release the air in the compression cuff 3 appropriately and reduce its inflation pressure.

[0046] like Figure 12 As shown, the valve cap 53 has four valve status indicator marks 8 on its surface. By rotating the valve buckle 54 so that its indicator mark 541 corresponds to the valve status indicator mark 8, the compression state of the valve core 52 can be adjusted, thereby adjusting the size of the valve port 531, and thus adjusting the hemostatic pressure of the radial artery hemostat on the patient's radial artery wound. Figure 12 The indicated state is that valve port 531 is completely closed, and the pressure provided by the hemostat is stable with no pressure decay. When the patient needs to reduce the hemostatic pressure after wearing the hemostat for a certain period of time, the operator can rotate the valve buckle 54 according to the valve status indicator 8 on the valve cap 53, so that the indicator position mark 541 corresponds to the valve status indicator mark 8. For example, when the indicator position mark 541 corresponds to the valve status indicator mark 8 (pressure released to 0 mmHg after 6 hours), ... Figure 13 As shown, this indicates that the gas inside the compression cuff 3 is gradually released, and the pressure applied by the hemostat to the patient's radial artery wound will decrease to 0 mmHg after 6 hours. The operator can select the on / off state of valve port 531 according to the patient's radial artery hemostasis status, eliminating the need for frequent manual pressure adjustment by the operator, reducing the workload of medical staff, and thus avoiding complications such as numbness, swelling, and radial artery occlusion caused by forgetting to adjust the pressure.

[0047] Reference Figure 2The inflation device 6 includes a syringe outer sleeve 61, a core rod 62, a piston 63, a needle seat 64, and a needle tube 65. The syringe outer sleeve 61 is hollow and has openings at both ends. One end of the core rod 62 is slidably inserted into the syringe outer sleeve 61, and the other end extends out of the syringe outer sleeve 61. The piston 63 is fixedly bonded to the end of the core rod 62 that extends into the syringe outer sleeve 61. The outer wall of the syringe outer sleeve 61 is provided with a scale strip. The opening at the end of the syringe outer sleeve 61 opposite to the insertion end of the core rod 62 is connected to the needle tube 65 through the needle seat 64. The needle tube 65 is used to connect with the valve port 53. 1. The tube 4 is connected to the inner cavity of the syringe sleeve 61. The syringe tube 65 is detachably covered with a protective sleeve 10 to protect the syringe tube 65. The protective sleeve 10 can be removed when inflation is needed. The outer wall of the syringe sleeve 61 with the core rod 62 inserted is integrally formed with a sleeve rolled edge 14. The end of the core rod 62 away from the syringe sleeve 61 is integrally formed with a handle 15. The sleeve rolled edge 14 and the handle 15 cooperate to facilitate the user to push and pull the core rod 62, thereby driving the piston 63 to move and form a pressure difference to achieve inflation.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A pneumatic radial artery hemostat with visual and automatic pressure reduction, characterized in that, The device includes a hemostat body (1), which is detachably mounted on the patient's wrist. The hemostat body (1) is provided with multiple compression airbags (3). Each compression airbag (3) has a puncture mark (2) connected to each other to match the radial artery puncture position of the patient. The hemostat body (1) is provided with an inflation port (12) that communicates with the multiple compression airbags (3). The inflation port (12) is connected to a control valve (5) through a trachea (4). The control valve (5) has multiple quantitative deflation modes for automatic decompression. The end of the control valve (5) away from the trachea (4) is detachably connected to an inflation device (6). A pressure visualization structure (7) is provided between the control valve (5) and the trachea (4) to reflect the hemostatic pressure applied by the multiple compression airbags (3) at the patient's wound.

2. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 1, characterized in that, The pressure visualization structure includes a pressure indicating balloon (71) and a pressure display scale (72). The pressure indicating balloon (71) is nested on the outer wall of the trachea (4). The outer wall of the overlapping area between the trachea (4) and the pressure indicating balloon (71) is provided with multiple air holes (41) that communicate with the pressure indicating balloon (71). The pressure indicating balloon (71) is covered with the pressure display scale (72). The pressure display scale (72) is a transparent and visible structure. The inner walls at both ends of the pressure display scale (72) are respectively connected and fixed to the outer walls of the trachea (4) and the control valve (5), but are not interconnected.

3. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 2, characterized in that, The inner walls of both ends of the pressure scale (72) are respectively bonded to the outer walls of the air pipe (4) and the control air valve (5) and have a ventilation gap.

4. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 1, characterized in that, The control valve (5) includes a valve body (51), a valve core (52), a valve cap (53), and a valve latch (54). The valve body (51) has a channel (511) connecting the air pipe (4) and the inflation device (6). The valve cap (53) is fixedly connected to the end of the valve body (51) away from the air pipe (4). The valve latch (54) is rotated between the valve cap (53) and the valve body (51). The valve core (52) is embedded at the end of the valve latch (54) away from the valve cap (53). The valve cap (53) has a central portion of... A valve port (531) communicating with the inflation device (6) is provided. A vent (521) communicating with the valve port (531) and the channel (511) is provided in the middle of the valve core (52). The valve buckle (54) is embedded in the inner wall of one end of the valve core (52) and threadedly connected to the valve body (51). The valve core (52) is a high-elastic material core and is locked between the end face of the valve body (51) and the inner bottom wall of the valve buckle (54). The vent (521) gradually decreases as the valve buckle (54) is turned toward the air pipe (4).

5. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 4, characterized in that, The valve cap (53) and the valve buckle (54) are connected by a transition fit. The valve cap (53) is provided with multiple valve status indicator marks (8) to correspond to multiple exhaust flows. The valve buckle (54) is provided with an indicator position mark (541) on its outer wall. When the indicator position mark (541) matches any of the valve status indicator marks (8), the gas flow of the vent (521) is consistent with the flow marked at the valve status indicator mark (8).

6. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 5, characterized in that, The multiple valve status indicator (8) include four valve status indicator (8) arranged in a circular array: fully open, fully closed, 6h pressure relief to 0mmHg, and 3h pressure relief to 0mmHg.

7. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 4, characterized in that, The inflation device (6) includes a syringe jacket (61), a core rod (62), a piston (63), a needle seat (64), and a needle tube (65). The syringe jacket (61) is hollow and has openings at both ends. One end of the core rod (62) is slidably inserted into the syringe jacket (61), and the other end extends out of the syringe jacket (61). The piston (63) is located at the end of the core rod (62) that extends into the syringe jacket (61). The outer wall of the syringe jacket (61) is provided with a scale strip. The opening at the end of the syringe jacket (61) away from the insertion end of the core rod (62) is connected to the needle tube (65) through the needle seat (64). The needle tube (65) is used to connect with the valve port (531) to connect the air tube (4) and the inner cavity of the syringe jacket (61). A protective sleeve (10) is detachably provided on the outside of the needle tube (65).

8. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 4, characterized in that, The valve core (52) includes, but is not limited to, a core made of silicone or rubber.

9. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 1, characterized in that, The hemostat body (1) has a double-layer opening structure. A rigid liner (9) is detachably inserted between the double-layer structure of the hemostat body (1). Multiple compression airbags (3) are set on the outer wall of the side layer structure of the hemostat body (1) that contacts the human skin. The puncture mark (2) is set on the side of the compression airbag (3) away from the hemostat body (1).

10. The pneumatic radial artery hemostat with visual automatic decompression as described in claim 1, characterized in that, The hemostat body (1) is provided with wristbands (11) on both sides, and the wristbands (11) on both sides are provided with Velcro assemblies (16) for use.

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