Convenient and low-cost radial artery compressor

Abstract

The present application relates to a radial artery compressor which is convenient to operate and low in cost and a working method thereof, comprising a gas bag compressor and a valve assembly, wherein the valve assembly comprises a valve body, a gas passage is arranged on the valve body, the gas outlet of the gas passage is communicated with the gas bag compressor, so that gas can enter and exit the gas bag compressor through the gas passage, first and second valves are arranged on the gas passage at intervals, so that when the first and second valves are closed at the same time, the gas passage forms a discharge gas temporary storage chamber between the first and second valves, and the volume of the discharge gas temporary storage chamber is matched with the exhaust capacity when the pressure is reduced by gas extraction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clinical medical equipment, in particular to a radial artery compressor and a working method thereof. BACKGROUND

[0002] The radial artery compressor is a kind of clinical medical equipment, which is mainly used for radial artery compression on patients after radial artery puncture surgery to achieve hemostasis. The Chinese patent "Radial artery balloon compressor" with the application number 201720632852.1 discloses a radial artery compressor in the prior art, which comprises a fixing plate, a wrist strap, a compression balloon and an encapsulation box with electronic components. The patent mainly designs a pressure sensor in the radial artery compressor to enable the doctor to accurately control the pressure when inflating, which has a certain intelligence.

[0003] However, due to cost problems, the compressor with the encapsulation box described above is rarely used in practice, and most hospitals still use ordinary compressors containing a fixing plate, a wrist strap and a compression balloon. The specific pressure of the ordinary compressor is roughly controlled by the volume of the gas filled in the use, which generally uses a syringe to fill 20ml of air into the compression balloon (depending on the specific data of different compressor brands), and then gradually reduces the pressure by using the syringe to extract air after four hours of radial artery compression, generally 2ml of air is extracted every 2 hours, a total of four times. This means that each patient wearing a radial artery compressor needs to be regularly monitored and the pressure reduced by the nursing staff, which greatly increases the burden of the nursing staff. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a radial artery compressor with simple structure and easy control, which is used to simplify the deflation and pressure reduction work of the gas bag.

[0005] To solve the above technical problems, the radial artery compressor provided by the present application comprises a gas bag compressor and a valve assembly. The valve assembly comprises a valve body, a gas passage is arranged on the valve body, the gas outlet of the gas passage is communicated with the gas bag compressor, so that the gas can enter and exit the gas bag compressor through the gas passage, first and second valves are arranged on the gas passage at intervals, so that when the first and second valves are closed at the same time, the gas passage forms a discharge gas temporary storage room between the first and second valves, and the volume of the discharge gas temporary storage room is matched with the exhaust volume during pressure reduction.

[0006] Further, the radial artery compressor further comprises a sliding block in sliding cooperation with the valve body, and the first and second valves are press-type valves, so that when the sliding block moves to contact the first and second valves, the opening and closing of the first and second valves can be controlled.

[0007] Further, the first valve includes a first valve core and a first spring, and the second valve includes a second valve core and a second spring, the first spring being supported between the first valve core and the valve body, and the second spring being supported between the second valve core and the valve body, so that when the slider is in contact with the first and second valve cores, the first and second springs are pressed, and when the slider is separated from the first and second valve cores, the first and second springs drive the first and second valve cores to reset.

[0008] Further, a sliding groove is arranged on the valve body along the extension direction of the gas passage, the top of the sliding groove is provided with sliding groove cover plates on both sides, and the lower ends of the slider are respectively provided with front and rear rollers, the front and rear rollers are arranged below the sliding groove cover plates, and the slider is arranged above the sliding groove cover plates, so that when the slider is moved, the front and rear rollers can move below the sliding groove cover plates.

[0009] Further, the first and second valve cores each include an integrated sealing column and a top cover plate, one side of the gas passage is provided with a spring accommodating groove, a sealing column insertion groove is arranged between the gas passage and the sliding groove, and the bottom surface of the sliding groove is provided with a top cover plate accommodating groove, the first and second springs are arranged in the corresponding spring accommodating grooves during assembly, the bottom end of the sealing column is in contact with the first or second spring, the sealing column passes through the sealing column insertion groove to close the gas pipeline when the top cover plate is pressed, and the first and second valve cores are lifted by the first or second spring when the top cover plate is not subjected to external force.

[0010] Further, an inclined transition surface is arranged at the upper end surface of the top cover plate, and the edge of the upper end surface of the top cover plate is lower than the center of the upper end surface of the top cover plate, so that when the first and second valve cores are lifted by the first and second springs, the edge of the top cover plate does not exceed the bottom surface of the sliding groove, and the front and rear rollers can press the top cover plate when the front and rear rollers move to be in contact with the top cover plate.

[0011] Further, the distance between the front and rear rollers is not less than the minimum distance between the first and second valve cores, and the slider presses the first or second valve core through the front and rear rollers; this distance can make at least one of the first and second valve cores be in a closed state when the slider slides between the first and second valve cores, so as to prevent the entire gas passage from being communicated with the outside.

[0012] Further, a movable limiting block is arranged on the valve body, so that the slider can be blocked by the limiting block after the front and rear rollers are separated from the first and second valve cores.

[0013] Further, anti-skid lines are arranged on the outer side of the slider, an injector connector is arranged at the front end of the gas passage, and the tail end of the gas passage is communicated with the air bag compressor through a hose.

[0014] The working method of the radial artery compressor comprises the following steps:

[0015] A, wearing the air bag compressor on the wrist of the patient.

[0016] B, moving the slider to the front end of the sliding groove, so that the slider is separated from the first and second valve cores, the first and second valve cores are supported by the first and second springs to be in an open state, the gas passage is conducted, and an appropriate amount of gas is injected into the air bag compressor through the syringe joint to achieve the effect of compressing the radial artery to stop bleeding.

[0017] C, moving the slider to the rear side of the sliding groove so that the front roller presses the first valve core down and the rear roller is placed between the first and second valve cores, at this time the first valve core closes the gas passage and the second valve core is in an open state, and the discharge gas temporary storage chamber between the first and second valve cores is balanced with the air pressure in the air bag compressor.

[0018] D, when it is necessary to deflate and reduce the pressure of the air bag compressor, move the slider to the rear side of the sliding groove so that the rear roller presses the second valve core down, at this time the gas passage is closed by the first and second valve cores; continue to move the slider to the rear side of the sliding groove so that the rear roller presses the second valve core and the front roller is separated from the first valve core, at this time the gas passage is closed by the second valve core and the first valve core is opened to partially discharge the gas temporarily stored in the discharge gas temporary storage chamber between the first and second valve cores, completing the deflation and pressure reduction.

[0019] E, moving the slider to the front side of the sliding groove so that the slider is reset to the front roller pressing the first valve core down and the rear roller is placed between the first and second valve cores, at this time the first valve core closes the gas passage and the second valve core is in an open state, and the gas in the air bag compressor enters the discharge gas temporary storage chamber between the first and second valve cores, so that the air pressure between the air bag compressor and the discharge gas temporary storage chamber is balanced again.

[0020] F, when it is necessary to deflate and reduce the pressure and supplement the gas again, repeat steps D and E.

[0021] The technical effect of the application: the radial artery compressor of the application is provided with a special valve with two valve cores, and the quantitative deflation of the air bag compressor is realized through the switching operation of the two valve cores. The medical staff or the patient himself / herself can release the pressure at the radial artery by one or more reciprocating operations of the slider, which greatly simplifies the nursing operation of the medical staff. Each reciprocating operation of the slider can reduce the pressure in the air bag by a certain value (the specific reduced value is related to the size of the space between the first valve core and the second valve core), and compared with the traditional radial artery compressor, the deflation operation does not need to use a syringe and can be completed by the patient himself / herself with one hand. The roller is arranged to facilitate the movement of the slider, and cooperates with the inclined transition surface on the upper end surface of the top cover plate of the valve core, so that the slider can conveniently extrude the first valve core and the second valve core during movement. The structure is simple and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further described in detail below in combination with the drawings of the specification:

[0023] Figure 1 is a structural schematic view of the valve assembly of the radial artery compressor of the application;

[0024] Figure 2 is a cross-sectional structural schematic view of the valve assembly when the gas channel is in a conductive state;

[0025] Figure 3 is a cross-sectional structural schematic view of the first valve and the second valve when they are in a cut-off state;

[0026] Figure 4 is a cross-sectional structural schematic view of the valve assembly when it is in an exhaust state;

[0027] Figure 5 is a cross-sectional structural schematic view of the valve assembly when it is in a gas supplementing state.

[0028] In the drawings: injector connector 1, hose 2, valve body 3, gas channel 301, sliding groove 302, transverse limiting groove 303, first valve core 4, second valve core 5, first spring 6, second spring 7, slider 8, rear roller 801, limiting block 9. DETAILED DESCRIPTION

[0029] Example 1

[0030] The radial artery compressor of the example includes an air bag compressor and a valve assembly. The air bag compressor can directly adopt various air bag compressors in the prior art, which will not be illustrated and described separately in this paper.

[0031] As Figure 1As shown, the valve assembly comprises a valve body 3, a gas passage 301 longitudinally arranged on the valve body 3, an air inlet of the gas passage 301 being provided with a syringe joint 1 for connecting with an external syringe, and an air outlet of the gas passage 301 being communicated with an air bag compressor through a hose 2, so that the gas can be in and out of the air bag compressor through the gas passage 301, and the air bag compressor is inflated by the syringe joint 1 when inflated, and the gas in the air bag compressor flows out of the syringe joint 1 when deflated.

[0032] The first valve and the second valve are arranged on the gas passage 301 at intervals to block the gas passage 301, so that when the first valve and the second valve are closed at the same time, a discharge gas temporary storage chamber is formed between the first valve and the second valve, and the volume of the discharge gas temporary storage chamber is adapted to the exhaust volume when the pressure is reduced by pumping.

[0033] Specifically, the radial artery compressor further comprises a sliding block 8 in sliding cooperation with the valve body 3, the first valve and the second valve are press valves, so that when the sliding block 8 moves to contact the first valve and the second valve, the opening and closing of the first valve and the second valve can be controlled; the first valve comprises a first valve core 4 and a first spring 6, and the second valve comprises a second valve core 5 and a second spring 7, the first spring 6 is supported between the first valve core 4 and the valve body 3, and the second spring 7 is supported between the second valve core 5 and the valve body 3, so that when the sliding block 8 contacts the first valve core 4 and the second valve core 5, the first spring 6 and the second spring 7 are extruded, and when the sliding block 8 is separated from the first valve core 4 and the second valve core 5, the first spring 6 and the second spring 7 drive the first valve core 4 and the second valve core 5 to reset. The first valve core 4 and the second valve core 5 each comprise an integrated sealing column and a top cover plate, one side of the gas passage 301 is provided with a spring accommodating groove, a sealing column insertion groove is arranged between the gas passage 301 and the sliding groove 302, and the bottom surface of the sliding groove 302 is provided with a top cover plate accommodating groove; during assembly, the first spring 6 and the second spring 7 are arranged in the corresponding spring accommodating groove, the bottom end of the sealing column contacts the corresponding first spring 6 or second spring 7, the sealing column passes through the sealing column insertion groove to close the gas pipeline 301 when the top cover plate is extruded, and the first valve core 4 and the second valve core 5 are lifted by the corresponding first spring 6 or second spring 7 when the top cover plate is not subjected to external force; the front roller and the rear roller 801 are arranged at the lower ends of the sliding block 8 respectively, the front roller and the rear roller 801 are fixedly connected to the bottom end of the sliding block 8 through a support respectively, the support passes through the gap between the two sliding groove cover plates, and the sliding block 8 is arranged above the sliding groove cover plate, so that the front roller and the rear roller 801 can move under the sliding groove cover plate when the sliding block 8 moves.

[0034] The upper end surface of the top cover plate is provided with an inclined transition surface, which is an arc-shaped transition surface, i.e., the top cover plate is provided in a conical frustum shape, or the inclined transition surface is a planar inclined transition, so that the edge of the upper end surface of the top cover plate is lower than the center of the upper end surface of the top cover plate. When the first valve core 4 and the second valve core 5 are lifted by the corresponding first spring 6 and the second spring 7, the top end of the top cover plate is limited by the chute cover plate, and the edge of the top cover plate does not exceed the bottom surface of the chute 302, so that when the front roller and the rear roller 801 move to contact the top cover plate, the front roller or the rear roller 801 can press the top cover plate along the inclined transition surface.

[0035] The distance between the front roller and the rear roller 801 is not less than the minimum distance between the first valve core 4 and the second valve core 5, and the slider 8 presses the corresponding first valve core 4 or second valve core 5 through the front roller and rear roller 801; such a distance can enable at least one of the first valve core 4 and the second valve core 5 to be in a closed state when the slider 8 slides between the first valve core 4 and the second valve core 5, thereby eliminating the possibility of the entire gas passage being communicated with the outside.

[0036] A movable limiting block 9 is arranged on the valve body 3, and a transverse limiting groove 303 perpendicular to the chute 302 is arranged on the valve body 3 in the transverse direction. The limiting block 9 can move along the transverse limiting groove 303, so that when the slider 9 moves to a specified position, for example, the front roller and the rear roller 801 are separated from the first valve core 4 or the second valve core 5, the limiting block 9 can be moved out to block the slider 8, thereby avoiding misoperation.

[0037] In order to facilitate the operation of the slider 8, anti-skid lines are arranged on the outer side of the slider 8. Embodiment 2

[0038] The working method of the radial artery compressor described above comprises the following steps:

[0039] A. The gas bag compressor is worn on the wrist of the patient.

[0040] B. Move the limiting block 9 into the transverse limiting groove 303 so that the limiting block 9 is away from the chute 302, and move the slider 8 to the front end of the chute 302 so that the slider 8 is separated from the first valve core 4 and the second valve core 5. The first valve core 4 and the second valve core 5 are lifted by the first spring 6 and the second spring 7 to be in an open state, and the gas passage 301 is communicated, as shown in Figure 2 The appropriate amount of gas (for example, 20 ml, depending on different gas bag compressors, the specific data will be different) is injected into the gas bag compressor through the syringe joint 1, so as to achieve the effect of compressing the radial artery to stop bleeding. At this time, the position of the slider 8 corresponds to the empty gear.

[0041] C. Moving the slider 8 to the rear side of the sliding groove 302 makes the front roller press the first valve core 4 down, and the rear roller 801 is placed between the first valve core 4 and the second valve core 5. At this time, the first valve core 4 closes the gas passage 301, and the second valve core 5 is in an open state. As shown in FIG. 4, the discharge gas temporary storage chamber between the first valve core 4 and the second valve core 5 is in equilibrium with the air pressure in the air bag compressor. At this time, the slider 8 is in the working gear. Figure 5

[0042] D. When it is necessary to deflate the air bag compressor, generally about 4 hours after the operation, the slider 8 is moved to the rear side of the sliding groove 302 to make the rear roller 801 press the second valve core 5 down. At this time, the first valve core 4 and the second valve core 5 simultaneously close the gas passage 301, as shown in FIG. 5. The discharge gas temporary storage chamber between the first valve core 4 and the second valve core 5 stores a certain volume of gas, and the air pressure in the discharge gas temporary storage chamber is higher than the external pressure. Continue to move the slider 8 to the rear side of the sliding groove 302 to make the rear roller 801 press the second valve core 5 and the front roller disengage from the first valve core 4. At this time, the second valve core 5 closes the gas passage 301, and the first valve core 4 opens to partially discharge the gas temporarily stored in the discharge gas temporary storage chamber between the first valve core 4 and the second valve core 5 (generally 2 ml), until the pressure in the discharge gas temporary storage chamber is balanced with the external pressure, as shown in FIG. 6. Deflation is completed at this time, and the slider 8 is in the deflation gear. Figure 3 Figure 4

[0043] E. To realize multiple deflations, the discharge gas temporary storage chamber needs to be supplemented with air by the air bag compressor. The specific operation is to move the slider 8 to the front side of the sliding groove 302 to reset the slider 8 to make the front roller press the first valve core 4 down and the rear roller 801 be placed between the first valve core 4 and the second valve core 5, as shown in FIG. 7. At this time, the first valve core 4 closes the gas passage 301, and the second valve core 5 is in an open state. The gas in the air bag compressor enters the discharge gas temporary storage chamber between the first valve core 4 and the second valve core 5, so that the air pressure between the air bag compressor and the discharge gas temporary storage chamber is balanced again. Figure 5

[0044] F. When it is necessary to deflate and supplement air again, steps D and E are repeated.

[0045] Obviously, the radial artery compressor of the embodiment can reduce the pressure in the air bag compressor by one round trip of the slider 8 between the working gear and the deflation gear each time. The specific reduced value is related to the space size between the first valve core 4 and the second valve core 5 in the gas passage 301. The operation is convenient, and the structure is simple and low in cost.

[0046] ​​​​Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. Based on the above description, other different forms of changes or variations can also be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the implementation modes. The obvious changes or variations extended from the spirit of the present application are still within the protection scope of the present application.

Claims

1. A radial artery compressor characterized by, The radial artery compressor comprises an air bag compressor and a valve assembly, the valve assembly comprises a valve body, a gas passage is arranged on the valve body, an air outlet of the gas passage is communicated with the air bag compressor, so that gas can enter and exit the air bag compressor through the gas passage, first and second valves are arranged on the gas passage at intervals, so that when the first and second valves are closed at the same time, a discharge gas temporary storage chamber is formed between the first and second valves, and the volume of the discharge gas temporary storage chamber is matched with the exhaust capacity during air extraction and pressure reduction. The radial artery compressor further comprises a sliding block in sliding cooperation with the valve body, the first and second valves are press valves, and when the sliding block moves to be in contact with the first and second valves, the opening and closing of the first and second valves can be controlled. The first valve comprises a first valve core and a first spring, the second valve comprises a second valve core and a second spring, the first spring is supported between the first valve core and the valve body, and the second spring is supported between the second valve core and the valve body, so that when the sliding block is in contact with the first and second valve cores, the first and second springs are extruded, and when the sliding block is separated from the first and second valve cores, the first and second springs drive the first and second valve cores to reset. A sliding groove is arranged on the valve body along the extension direction of the gas passage, top sides of the sliding groove are provided with sliding groove cover plates, front and rear rollers are arranged at lower ends of the sliding block respectively, the front and rear rollers are arranged below the sliding groove cover plates, and the sliding block is arranged above the sliding groove cover plates, so that when the sliding block moves, the front and rear rollers can move below the sliding groove cover plates. The first and second valve cores each comprise an integrally arranged sealing column and a top cover plate, one side of the gas passage is provided with a spring accommodating groove, a penetrating sealing column insertion groove is arranged between the gas passage and the sliding groove, and a top cover plate accommodating groove is arranged on the bottom surface of the sliding groove, the first and second springs are arranged in the corresponding spring accommodating grooves during assembly, the bottom end of the sealing column is in contact with the first or second spring, the sealing column passes through the sealing column insertion groove to close the gas passage when the top cover plate is extruded, and the first and second valve cores are lifted by the first or second spring when the top cover plate is not subjected to external force. An inclined transition surface is arranged on the upper end surface of the top cover plate, the edge of the upper end surface of the top cover plate is lower than the center of the upper end surface of the top cover plate, so that when the first and second valve cores are lifted by the first and second springs, the edge of the top cover plate does not exceed the bottom surface of the sliding groove, and the front and rear rollers can press the top cover plate when the front and rear rollers move to be in contact with the top cover plate. The distance between the front and rear rollers is not less than the minimum distance between the first and second valve cores, and the sliding block presses the first or second valve core through the front and rear rollers. A movable limiting block is arranged on the valve body, anti-skid lines are arranged on the outer side of the sliding block, a syringe joint is arranged at the front end of the gas passage, and the tail end of the gas passage is communicated with the air bag compressor through a hose.

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