Radial artery hemostat air pressure indicating device and radial artery hemostasis system

Abstract

The invention relates to an air pressure indicating device, in particular to an air pressure indicating device of a radial artery hemostat and a radial artery hemostasis system, which are used for solving the problems of inaccurate reading, lack of a precision calibration mechanism and poorer universality and replaceability of the existing pressure indicating device of the radial artery hemostat. The device comprises a shell assembly and an end cover, the shell assembly and the end cover are connected in a sealed mode to form a cavity together. The shell assembly is provided with a gas inlet used for being communicated with a compression air bag of the radial artery hemostat. The shell assembly is provided with a transparent observation window and a plurality of indicating scales; an air pressure sensing assembly and a sliding block are arranged in the cavity; the sliding block is provided with a reading datum line; an air pressure value calibration device is arranged at the rear end of the air pressure sensing assembly; a sealing diaphragm is also arranged in the cavity; the sealing diaphragm divides the cavity into a first cavity and a second cavity; the gas inlet is communicated with the first cavity; the air pressure sensing assembly and the sliding block can be driven by air pressure in the first cavity to move.

Description

Technical Field

[0001] This invention relates to a radial artery hemostasis device, specifically to a radial artery hemostasis device with an air pressure indicator and a radial artery hemostasis system. Background Technology

[0002] Following radial artery interventional procedures, a radial artery hemostat is typically used to apply pressure to the puncture site for hemostasis. Currently, the widely used balloon-type radial artery hemostats in clinical practice generally employ a rather crude method of pressure indication. A common practice involves setting up a small observation balloon connected to the main compression balloon, with healthcare professionals visually observing the balloon's inflation level and relying on their personal experience to estimate the actual pressure applied to the patient's radial artery. This traditional method has significant drawbacks: pressure assessment is entirely subjective and cannot be precisely quantified; different healthcare professionals may use different standards of judgment, easily leading to insufficient pressure causing hematoma, or excessive pressure increasing the risk of complications such as radial artery occlusion and limb ischemia.

[0003] To improve the accuracy of pressure indication, several improvements have been proposed in the prior art. For example, Chinese patent CN120918741A discloses a pneumatic radial artery hemostat with visual automatic pressure decompression. This hemostat has a pressure-indicating balloon on the trachea, covered with a transparent pressure scale. When the system is pressurized, the balloon inflates, and the interface between the balloon and the scale indicates the pressure value. This solution achieves visualization and rough quantification of pressure, representing an improvement over simply relying on the shape of the balloon. However, this solution still has the following shortcomings:

[0004] First, the principle of its pressure indication relies on the radial contact surface between the balloon and the cylindrical scale. This radial contact surface is an arc-shaped area, which makes it easy to produce visual errors when reading, especially when the pressure threshold is not accurately judged.

[0005] Secondly, its structure lacks a calibration mechanism for indicating accuracy. After long-term use, indication deviations caused by material fatigue or manufacturing tolerances cannot be corrected, affecting long-term reliability.

[0006] Third, its pressure indicator component and air circuit control valve are a fixed integrated design, which has poor versatility and replaceability. Summary of the Invention

[0007] The purpose of this invention is to solve the technical problems of inaccurate readings, lack of precision calibration mechanism, and poor versatility and substitutability of existing radial artery hemostat pressure indicators, and to provide a radial artery hemostat pressure indicator and a radial artery hemostasis system.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A radial artery hemostat pressure indicator device, characterized in that it includes a housing assembly and an end cap; the housing assembly and the end cap are connected to form a cavity;

[0010] The housing assembly is provided with a gas inlet communicating with the cavity for connecting the compression airbag of the radial artery hemostat.

[0011] The wall of the housing assembly is provided with a transparent observation window along its axial direction, and the wall area where the transparent observation window is located is provided with multiple indicator scales perpendicular to the axial direction of the housing assembly.

[0012] The cavity is equipped with a pressure sensing component; the pressure sensing component includes an elastic deformation structure and a sealing structure that is sealed to the inner wall of the housing component.

[0013] The sealing structure divides the cavity into a first cavity and a second cavity that are airtightly isolated from each other; the first cavity is a sealed cavity and is connected to the gas inlet;

[0014] The elastic deformation structure is located in the second cavity, and a pressure indicating structure is provided at its front end; the pressure indicating structure is provided with a reading reference line perpendicular to the axial direction of the shell.

[0015] The sealing structure responds to changes in air pressure within the first cavity by moving toward the side of the elastic deformation structure, causing the elastic deformation structure to undergo elastic deformation and driving the pressure indicating structure to move, thereby indicating the air pressure value through the relative position of the reading reference line and the indicating scale.

[0016] Furthermore, it also includes a barometric pressure calibration device;

[0017] The air pressure calibration device includes an adjusting bolt and a clamping baffle.

[0018] The adjusting bolt passes through the end cap and is threaded into it. The end of the screw extending into the second cavity abuts against one side of the clamping baffle. The other side of the clamping baffle is connected to or abuts against the rear end of the elastic deformation structure.

[0019] By rotating the adjusting bolt, the position of the rear end of the clamping baffle and the elastic deformation structure in the second cavity is changed, thereby indirectly adjusting the relative position of the reading reference line and the indicator scale, and realizing the calibration of the air pressure value.

[0020] Furthermore, when the elastic deformation structure is in a free state without pressure, the reading reference line is aligned with one of the plurality of indicator scales that represents the lowest pressure value.

[0021] Furthermore, the housing assembly includes a main housing; the main housing is a cylindrical structure with one end open, its rear port connected to the end cap, and its front end closed, together forming the cavity; the gas inlet is located on the wall or the closed end of the main housing near the closed end.

[0022] Alternatively, the housing assembly includes a main housing and a front end head; the main housing is a cylindrical structure with openings at both ends, its rear port being connected to the end cap, and its front port being connected to the front end head, together forming the cavity; the gas inlet is located on the front end head.

[0023] Furthermore, the elastic deformation structure is a sensing capsule; the sensing capsule is a closed structure made of elastic material, which is filled with a gas medium, and a gap is left between the side wall and the inner wall of the shell assembly.

[0024] The sealing structure is formed by the slider and the inner wall of the housing assembly sealingly engaging; the front end face or the rear end face of the slider forms the pressure indicating structure;

[0025] The front end of the sensing capsule abuts against the rear end face of the slider, and its rear end abuts against the pressing baffle.

[0026] Furthermore, the elastic deformation structure is a sensing spring; the sealing structure is an elastically deformable sealing diaphragm, the edge of which is fixed between the main housing and the end cap.

[0027] The pressure indicating structure is a pressure indicating plate, and the front side of the pressure indicating plate abuts against the sealing diaphragm;

[0028] The front end of the sensing spring is connected to the rear end of the pressure indicator plate, and its rear end is connected to or abuts against the pressing baffle.

[0029] The sealing diaphragm contracts and deforms toward the sensing spring in response to an increase in air pressure within the first cavity, thereby pushing the pressure indicator plate to compress the sensing spring.

[0030] Furthermore, the elastic deformation structure is a sensing spring; the sealing structure is an elastically deformable sealing diaphragm, the edge of which is fixed between the main housing and the front end head;

[0031] The pressure indicating structure is a pressure indicating plate, and the front side of the pressure indicating plate abuts against the sealing diaphragm;

[0032] The front end of the sensing spring is connected to the rear end of the pressure indicator plate, and its rear end is connected to or abuts against the pressing baffle.

[0033] The end cap is provided with a vent hole; the vent hole is connected to the second cavity.

[0034] The sealing diaphragm stretches and deforms toward the sensing spring in response to an increase in air pressure within the first cavity, thereby pushing the pressure indicator plate to compress the sensing spring.

[0035] Furthermore, the main housing is made of a transparent material, and its radial cross-section is circular, elliptical, or polygonal;

[0036] The main housing has an area with an indicator scale. Along its axial direction from back to front, there are green, yellow and red areas. The indicator scales corresponding to the three areas are used to visually indicate whether the pressure of the radial artery hemostat's compression balloon is sufficient, needs to be increased, or needs to be increased immediately.

[0037] Furthermore, the reading reference line is the edge contour line of the front or rear face of the pressure indicating structure or a specific line provided on the side wall of the pressure indicating structure.

[0038] The gas inlet is equipped with a quick connector or Luer connector for connecting the compression balloon of the radial artery hemostat.

[0039] Meanwhile, the present invention also provides a radial artery hemostasis system, including a tourniquet, a compression airbag disposed on the tourniquet, and an inflation device for inflating the compression airbag, wherein the compression airbag and the inflation device are connected through a pipeline; its special feature is that it also includes the above-mentioned radial artery hemostasis device air pressure indicator.

[0040] The gas inlet of the radial artery hemostat pressure indicator is connected to the compression airbag through a pipeline, so that the real-time working pressure of the compression airbag can be synchronously transmitted and displayed on the radial artery hemostat pressure indicator.

[0041] Compared with the prior art, the present invention has the following beneficial technical effects:

[0042] 1. This invention provides a radial artery hemostat pressure indicator device, offering a highly integrated and modular pressure indicator solution. It integrates pressure sensing, mechanical transmission, and visual reading into a single cavity, resulting in a compact structure and high reliability. This enables real-time, intuitive, and stable visual monitoring of the pressure of the radial artery hemostat's compression cuff, allowing medical personnel to read the pressure of the radial artery hemostat's compression cuff in real time and intuitively, facilitating quick and accurate pressure value reading.

[0043] 2. This invention provides a radial artery hemostat pressure indicator device. By integrating a calibration device consisting of an adjusting bolt and a clamping baffle, the user can conveniently and accurately adjust the indicating reference externally, effectively compensating for zero-point drift caused by manufacturing tolerances, material creep, or environmental factors, ensuring measurement accuracy over long-term use. At the same time, it facilitates regular calibration or zeroing by the user, significantly improving the airtightness and long-term pressure maintenance capability of the entire indicator device, ensuring the long-term stability of measurement accuracy, and extending the service life and reliability of the radial artery hemostat pressure indicator device.

[0044] 3. The present invention provides a radial artery hemostat pressure indicator device, which clearly defines the alignment relationship between the reading baseline and the lowest pressure scale in the "free state", establishes a clear and unique measurement zero point, so that the pressure reading has a clear absolute reference, avoids misreading, and improves the standardization and safety of clinical operation.

[0045] 4. The present invention provides a radial artery hemostat air pressure indicator device, which provides two main shell configurations: an integrated type (front end closed) and a split type (with front end head added), giving the design a high degree of flexibility and adaptability. It can meet the needs of different product layouts, air intake directions and manufacturing processes, reduce development and production costs, and improve the product's adaptability and manufacturability.

[0046] 5. The present invention provides a radial artery hemostat pressure indicator device, which uses a flexible sensing bladder as the sensing element. Its deformation has a good linear relationship with the pressure, which improves the sensitivity and accuracy of pressure sensing. At the same time, the calibration device achieves precise zeroing by adjusting the position of the bladder.

[0047] 6. This invention provides a radial artery hemostat pressure indicator device, offering an alternative implementation based on a sensing spring. It utilizes the linear mechanical properties of the spring to achieve pressure sensing, resulting in a simple structure, low cost, and stable performance. An independent sealing diaphragm isolates the pressure transmission area from the sensing area, protecting the spring from contamination and corrosion. Furthermore, by fixing the sealing diaphragm between the main housing and the end cap, and allowing it to contract and deform under pressure to drive the spring, a rapid-response and structurally robust sensing mechanism is formed. This layout ensures a direct pressure transmission path, with the second cavity in a closed state, resulting in better overall integrity.

[0048] 7. The present invention provides a radial artery hemostat pressure indicator device, which creates a more sensitive sensing condition (diaphragm stretching mode) under low pressure by fixing a sealing diaphragm to the front end and allowing the second cavity to be connected to the atmosphere through a vent. This structure significantly reduces the influence of sliding friction on sensitivity, and the vent ensures smooth operation.

[0049] 8. The present invention provides a radial artery hemostat pressure indicator device, which provides an intuitive status alarm function through color partitioning (green, yellow, red), enabling medical staff to quickly judge the pressure status without precise readings, greatly improving emergency response speed and operational safety; at the same time, the standardized interface (quick / Luer connector) ensures universal and quick connection with existing hemostat tubing.

[0050] 9. The present invention provides a radial artery hemostasis system, which integrates the above-mentioned precise indicating device into the radial artery hemostasis system to form a complete solution. The entire system has real-time, objective, and visual pressure monitoring capabilities, which can effectively guide medical staff to implement individualized and precise compression and systematically reduce the risk of complications. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the structure of a radial artery hemostat air pressure indicator device according to a first embodiment of the present invention;

[0052] Figure 2 This is a schematic diagram of the compressed state of the sensing spring in Embodiment 1 of the radial artery hemostat air pressure indicator device of the present invention;

[0053] Figure 3 This is a schematic diagram of a second embodiment of the radial artery hemostat air pressure indicator device of the present invention;

[0054] Figure 4 This is a schematic diagram of the structure of a radial artery hemostat air pressure indicator device according to a third embodiment of the present invention;

[0055] Figure 5 This is a schematic diagram of the structure of the sensing bladder under pressure in Embodiment 3 of the radial artery hemostat pressure indicator device of the present invention.

[0056] The attached figures are labeled as follows:

[0057] 1-Housing assembly, 11-Main housing, 12-Gas inlet, 13-Indicating scale, 14-Front end head, 2-End cap, 21-Ventilation hole, 3-Pressure sensing assembly, 31-Sensing bladder, 32-Slider, 34-Sensing spring, 36-Sealing diaphragm, 37-Pressure indicator plate, 4-Cavity, 41-First cavity, 42-Second cavity, 5-Pressure value calibration device, 51-Adjusting bolt, 52-Pressure baffle. Detailed Implementation

[0058] To better understand the purpose, structure, and function of the present invention, the following detailed description of a radial artery hemostat air pressure indicator device and a radial artery hemostasis system, in conjunction with the accompanying drawings, is provided.

[0059] Example 1

[0060] This invention provides a radial artery hemostat pressure indicator device, such as... Figure 1 , Figure 2 As shown, it includes: housing assembly 1, end cap 2 and air pressure value calibration device 5; housing assembly 1 and end cap 2 are connected to form a cavity 4.

[0061] The housing assembly 1 is provided with a gas inlet 12 that communicates with the cavity 4 for connecting the compression airbag of the radial artery hemostat; the wall of the housing assembly 1 is provided with a transparent observation window along its axial direction; the wall area where the transparent observation window is located is provided with multiple indicator scales 13 perpendicular to the axial direction of the housing assembly 1.

[0062] The cavity 4 is equipped with a pressure sensing component 3. The pressure sensing component 3 includes an elastic deformation structure and a sealing structure that is sealed to the inner wall of the housing component 1. The sealing structure divides the cavity 4 into a first cavity 41 and a second cavity 42 that are airtightly isolated from each other. The first cavity 41 is a sealed cavity and is connected to the gas inlet 12. The elastic deformation structure is located in the second cavity 42 and has a pressure indicating structure at its front end. The pressure indicating structure has a reading reference line that is perpendicular to the axis of the housing 1. In response to the change in air pressure in the first cavity 41, the sealing structure moves toward the side of the elastic deformation structure, causing the elastic deformation structure to undergo elastic deformation and driving the pressure indicating structure to move, thereby indicating the air pressure value through the relative position of the reading reference line and the indicating scale 13.

[0063] The air pressure calibration device 5 includes an adjusting bolt 51 and a clamping baffle 52. The adjusting bolt 51 passes through the end cover 2 and is threaded to it. The end of the screw extending into the second cavity 42 abuts against one side of the clamping baffle 52. The other side of the clamping baffle 52 is connected to or abuts against the rear end of the elastic deformation structure. By rotating the adjusting bolt 51, the position of the clamping baffle 52 and the rear end of the elastic deformation structure in the second cavity 42 is changed, so as to indirectly adjust the relative position of the reading reference line and the indicating scale 13, thereby realizing the calibration of the air pressure value.

[0064] When the elastically deformable structure is in a free, uncompressed state, the reading reference line is aligned with one of the multiple indicating scales 13 that represents the lowest pressure value. The reading reference line on the pressure indicating structure is the edge contour line of its front and rear faces, or a specific line set on its sidewall.

[0065] In this embodiment, the housing assembly 1 includes a main housing 11 and a front end head 14; the main housing 11 is a cylindrical structure with openings at both ends, its rear port is connected to the end cap 2, and its front port is connected to the front end head 14, together forming a cavity 4; a gas inlet 12 is provided on the front end head 14. The gas inlet 12 is provided with a quick connector or Luer connector for connecting the compression balloon of the radial artery hemostat.

[0066] The main housing 11 has an area with an indicator scale 13, which, along its axial direction from back to front, is divided into a green area, a yellow area, and a red area. These areas are used to visually indicate whether the pressure of the radial artery hemostat's compression cuff is sufficient, requires additional pressure, or needs immediate additional pressure, respectively. When the reading baseline on the pressure indicator structure is in the green area, it indicates that the pressure in the radial artery hemostat's compression cuff is sufficient; when it is in the yellow area, it indicates that the pressure in the radial artery hemostat's compression cuff needs to be supplemented; and when it is in the red area, it indicates that the pressure in the radial artery hemostat's compression cuff needs to be immediately supplemented with sufficient pressure.

[0067] In other embodiments, the cross-section of the main housing 11 along the axial direction may also be elliptical or polygonal.

[0068] In this embodiment, the elastic deformation structure is a sensing spring 34. The sealing structure is an elastically deformable sealing diaphragm 36, the edge of which is fixed between the main housing 11 and the front end head 14. The pressure indicating structure is a pressure indicating plate 37, the front side of which abuts against the sealing diaphragm 36.

[0069] The front end of the sensing spring 34 is connected to the rear end of the pressure indicator plate 37, and its rear end is connected to or abuts against the pressing baffle 52.

[0070] The end cap 2 is provided with a vent hole 21; the vent hole 21 is connected to the second cavity 42; the sealing diaphragm 36 responds to the increase of air pressure in the first cavity 41 and stretches and deforms toward the sensing spring 34 to push the pressure indicator plate 37 to compress the sensing spring 34.

[0071] The principle of air pressure numerical calibration in Embodiment 1 of the present invention is as follows:

[0072] When the adjusting bolt 51 rotates, it pushes the clamping baffle 52 forward, which in turn moves the rear end of the sensing spring 34 forward. This changes the position of the rear end of the sensing rod 34 within the second cavity 42, adjusting the relative position of the reading reference line and the indicating scale 13 to achieve the calibration function. This structure ensures that the calibration operation is performed within the second cavity 42, which is completely airtightly isolated from the first cavity 41, thus completely eliminating the possibility of gas leakage through the threaded joint of the adjusting bolt 51.

[0073] The working principle of Embodiment 1 of the present invention is as follows:

[0074] When the air pressure in the compression bladder of the radial artery hemostat increases, the sealing diaphragm 36 can stretch and deform towards the second cavity 42 in response to the increase in air pressure in the first cavity 41, thereby pushing the pressure indicator plate 37 to compress the sensing spring 34; at the same time, the air in the second cavity 42 is discharged from the vent 21. At this time, the position of the reading baseline and the indicator scale 13 is the air pressure of the compression bladder of the radial artery hemostat, and the air pressure value is read.

[0075] The method of using Embodiment 1 of the present invention is as follows:

[0076] (1) Connect the gas inlet 12 of the radial artery hemostat pressure indicator device to the compression airbag of the radial artery hemostat through a pipe.

[0077] (2) Inflate the compression bladder of the radial artery hemostat with gas. At this time, the relative position of the reading baseline and the indication scale 13 in the radial artery hemostat pressure indicator is the pressure of the compression bladder of the radial artery hemostat.

[0078] The radial artery hemostat pressure indicator device of Embodiment 1 of the present invention can be connected to the compression airbag of the radial artery hemostat via a pipeline to form a radial artery hemostat system. This radial artery hemostat system includes a tourniquet, a compression airbag disposed on the tourniquet, and an inflation device for inflating the compression airbag. The compression airbag and the inflation device are connected via a pipeline. Specifically, the gas inlet 12 of the radial artery hemostat pressure indicator device is connected to the inflation pipeline of the compression airbag via a pipeline, so that the real-time working pressure of the compression airbag is synchronously transmitted and displayed on the radial artery hemostat pressure indicator device.

[0079] Example 2

[0080] This invention provides a radial artery hemostat pressure indicator device, such as... Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that:

[0081] The housing assembly 1 includes a main housing 11; the main housing 11 is a cylindrical structure with one end open, its rear port is connected to the end cap 2, and its front end is a closed end, together forming a cavity 4; the gas inlet 12 is located on the wall or closed end of the main housing 11 near the closed end.

[0082] The elastic deformation structure is a sensing spring 34; the sealing structure is an elastically deformable sealing diaphragm 36, the edge of which is fixed between the main housing 11 and the end cap 2; the pressure indicating structure is a pressure indicating plate 37, the front side of which abuts against the sealing diaphragm 36; the front end of the sensing spring 34 is connected to the rear end of the pressure indicating plate 37, and its rear end is connected to or abuts against the pressing baffle 52; the sealing diaphragm 36 contracts and deforms toward the sensing spring 34 in response to the increase in air pressure in the first cavity 41, so as to push the pressure indicating plate 37 to compress the sensing spring 34.

[0083] Among them, the sealing diaphragm 36 is in the maximum tensile state when the sensing spring 34 is in a free and extended state.

[0084] The working principle of Embodiment 2 of the present invention is as follows:

[0085] When the air pressure in the compression bladder of the radial artery hemostat increases, the sealing diaphragm 36 can contract and deform towards the second cavity 42 in response to the increase in air pressure in the first cavity 41, thereby pushing the pressure indicator plate 37 to compress the sensing spring 34. At this time, the position of the reading baseline and the indicator scale 13 is the air pressure of the compression bladder of the radial artery hemostat, and the air pressure value is read.

[0086] Example 3

[0087] This invention provides a radial artery hemostat pressure indicator device, such as... Figure 4 , Figure 5 As shown, the difference between this embodiment and Embodiments 1 and 2 is that:

[0088] The elastic deformation structure is a sensing capsule 31; the sensing capsule 31 is a sealed structure made of elastic material, which is filled with a gas medium, and there is a gap between the side wall and the inner wall of the housing assembly 1; the sealing structure is formed by the slider 32 and the inner wall of the housing assembly 1 in a sealing fit; the front end face or the rear end face of the slider 32 constitutes a pressure indicating structure; the front end of the sensing capsule 31 abuts against the rear end face of the slider 32, and its rear end abuts against the pressing baffle 52.

[0089] The sensing capsule 31 is an elongated spherical capsule made of silicone, filled with air as the compressible medium. The front end of the sensing capsule 31 is fixedly connected to the rear end of the slider 32 by an adhesive.

[0090] In other embodiments, the sensing capsule 31 may also be a flat membrane made of rubber; the compressible medium filled inside may be a gas or liquid medium other than air. The front end of the sensing capsule 31 is connected to the rear end of the slider 32 by other connection methods.

[0091] The working principle of Embodiment 3 of the present invention is as follows:

[0092] When the air pressure in the compression bladder of the radial artery hemostat increases, the slider 32 can slide towards the second cavity 42 in response to the increase in air pressure in the first cavity 41, so as to push the sensing bladder 31 to compress and deform. At this time, the position of the reading reference line and the indicator scale 13 is the air pressure of the compression bladder of the radial artery hemostat, and the air pressure value is read.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A radial artery hemostat pressure indicator device, characterized in that: It includes a housing assembly (1) and an end cap (2); the housing assembly (1) and the end cap (2) are connected to form a cavity (4). The housing assembly (1) is provided with a gas inlet (12) communicating with the cavity (4) for connecting the compression airbag of the radial artery hemostat; The wall of the housing assembly (1) is provided with a transparent observation window along its axial direction, and the wall area where the transparent observation window is located is provided with multiple indicator scales (13) perpendicular to the axial direction of the housing assembly (1). The cavity (4) is provided with a pressure sensing component (3); the pressure sensing component (3) includes an elastic deformation structure and a sealing structure that is sealed to the inner wall of the housing component (1); The sealing structure divides the cavity (4) into a first cavity (41) and a second cavity (42) that are airtightly isolated from each other; the first cavity (41) is a sealed cavity and is connected to the gas inlet (12); The elastic deformation structure is located in the second cavity (42), and a pressure indicator structure is provided at its front end; the pressure indicator structure is provided with a reading reference line perpendicular to the axis of the shell (1); The sealing structure responds to the change in air pressure inside the first cavity (41) and moves toward the side of the elastic deformation structure, causing the elastic deformation structure to undergo elastic deformation and driving the pressure indicating structure to move, thereby indicating the air pressure value through the relative position of the reading reference line and the indicating scale (13).

2. The radial artery hemostat pressure indicating device according to claim 1, characterized in that: It also includes a barometric pressure calibration device (5); The air pressure calibration device (5) includes an adjusting bolt (51) and a clamping baffle (52). The adjusting bolt (51) passes through the end cap (2) and is threaded to it. The end of the screw that extends into the second cavity (42) abuts against one side of the clamping baffle (52); the other side of the clamping baffle (52) is connected to or abuts against the rear end of the elastic deformation structure.

3. The radial artery hemostat pressure indicating device according to claim 2, characterized in that: When the elastic deformation structure is in a free state without pressure, the reading reference line is aligned with one of the multiple indicator scales (13) that represents the lowest pressure value.

4. The radial artery hemostat pressure indicating device according to claim 2 or 3, characterized in that: The housing assembly (1) includes a main housing (11); the main housing (11) is a cylindrical structure with one end open, its rear port is connected to the end cap (2), and its front end is a closed end, together forming the cavity (4); the gas inlet (12) is located on the wall or closed end of the main housing (11) near the closed end; Alternatively, the housing assembly (1) includes a main housing (11) and a front end head (14); the main housing (11) is a cylindrical structure with openings at both ends, its rear port is connected to the end cap (2), and its front port is connected to the front end head (14), together forming the cavity (4); the gas inlet (12) is located on the front end head (14).

5. The radial artery hemostat pressure indicating device according to claim 4, characterized in that: The elastic deformation structure is a sensing capsule (31); the sensing capsule (31) is a closed structure made of elastic material, which is filled with a gas medium, and there is a gap between the side wall and the inner wall of the shell assembly (1). The sealing structure is formed by the sealing fit between the slider (32) and the inner wall of the housing assembly (1); the front end face or the rear end face of the slider (32) constitutes the pressure indicating structure; The front end of the sensing capsule (31) abuts against the rear end face of the slider (32), and its rear end abuts against the pressing baffle (52).

6. The radial artery hemostat pressure indicating device according to claim 4, characterized in that: The elastic deformation structure is a sensing spring (34); the sealing structure is an elastically deformable sealing diaphragm (36), the edge of which is fixed between the main housing (11) and the end cap (2); The pressure indicating structure is a pressure indicating plate (37), and the front side of the pressure indicating plate (37) abuts against the sealing diaphragm (36); The front end of the sensing spring (34) is connected to the rear end of the pressure indicator plate (37), and its rear end is connected to or abuts against the pressing baffle (52). The sealing diaphragm (36) contracts and deforms toward the sensing spring (34) in response to the increase in air pressure in the first cavity (41), thereby pushing the pressure indicator plate (37) to compress the sensing spring (34).

7. The radial artery hemostat pressure indicating device according to claim 4, characterized in that: The elastic deformation structure is a sensing spring (34); the sealing structure is an elastically deformable sealing diaphragm (36), the edge of which is fixed between the main housing (11) and the front end head (14); The pressure indicating structure is a pressure indicating plate (37), and the front side of the pressure indicating plate (37) abuts against the sealing diaphragm (36); The front end of the sensing spring (34) is connected to the rear end of the pressure indicator plate (37), and its rear end is connected to or abuts against the pressing baffle (52). The end cap (2) is provided with a vent (21); the vent (21) is connected to the second cavity (42); The sealing diaphragm (36) stretches and deforms toward the sensing spring (34) in response to the increase in air pressure in the first cavity (41), so as to push the pressure indicator plate (37) to compress the sensing spring (34).

8. The radial artery hemostat pressure indicating device according to claim 4, characterized in that: The main shell (11) is made of transparent material and its radial cross-section is circular, elliptical or polygonal; The main housing (11) has an area with an indicator scale (13). Along its axial direction from back to front, there are green, yellow and red areas. The indicator scale (13) corresponding to the three areas are used to visually indicate whether the pressure of the compression airbag of the radial artery hemostat is sufficient, needs to be increased, or needs to be increased immediately.

9. The radial artery hemostat pressure indicating device according to claim 1, characterized in that: The reading reference line is the edge outline of the front or rear face of the pressure indicator structure or a specific line set on the side wall of the pressure indicator structure. The gas inlet (12) is provided with a quick connector or Luer connector for connecting the compression balloon of the radial artery hemostat.

10. A radial artery hemostasis system, comprising a tourniquet, a compression airbag disposed on the tourniquet, and an inflation device for inflating the compression airbag, wherein the compression airbag and the inflation device are connected via tubing; characterized in that: It also includes the radial artery hemostat pressure indicator as described in any one of claims 1-9; The gas inlet (12) of the radial artery hemostat pressure indicator is connected to the compression airbag through a pipeline, so that the real-time working pressure of the compression airbag can be synchronously transmitted and displayed on the radial artery hemostat pressure indicator.

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