Wearable blood pressure detection device

Abstract

The application relates to a wearable blood pressure detection device and relates to the technical field of medical instruments, which comprises a wearing main body, a gas collecting hose, a gas guide pipe, a gas pressure adjusting assembly, a gas pressure detection assembly and a sliding ring. The wearing main body comprises a watch dial and a watchband, and a containing groove is formed in the inner side of the watchband. The gas guide pipe is installed in the watchband and is communicated with both ends of the watch dial. The gas collecting hose is arranged on both sides of the watchband and is in contact with the arm. The gas guide pipe is communicated with the gas collecting hose. The gas collecting hose can be placed in the containing groove after being deflated. The gas pressure adjusting assembly is arranged in the watch dial and is communicated with the gas guide pipe. The gas pressure adjusting assembly is used for inflating and deflating the gas collecting hose to adjust the gas pressure in the gas collecting hose. The gas pressure detection assembly comprises a pressure sensor arranged in the gas guide pipe and is used for monitoring the gas pressure in the gas collecting hose. The sliding ring is sleeved on the watchband. The sliding ring is connected with an extrusion block which is slidingly arranged in the containing groove. The extrusion block is used for discharging the gas in the gas collecting hose. The application can reduce the residual gas amount in the gas collecting hose and improve the blood pressure detection precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a wearable blood pressure detection device. BACKGROUND

[0002] Hypertension is a chronic disease, and most of the hypertension cannot be cured, and needs to be regularly monitored and take antihypertensive drugs to maintain blood pressure in the target range. At present, the more accurate method for measuring blood pressure is the cuff pressurization method, in which the oscillometric method is a non-invasive measurement method based on the amplitude change of the arterial wall vibration wave (oscillation wave) to indirectly estimate blood pressure. It pressurizes the upper limbs through an inflatable cuff (usually an inflatable air collection hose built-in in a watch), when the pressure in the cuff is higher than the systolic pressure, the blood vessels are compressed and the blood flow is blocked; then slowly deflate, as the pressure in the cuff decreases, when the pressure is lower than the systolic pressure, the blood vessels start to beat again, and the blood flow resumes. In this process, the pressure sensor built-in in the watch detects the vibration signal of the blood vessel wall, and there is a certain corresponding relationship between the vibration signal and the blood pressure.

[0003] Before measurement, the gas in the air collection hose needs to be exhausted, and at present, the exhaust valve is opened and the air collection hose is pressed to exhaust the gas therein, which is easy to cause incomplete exhaust of the gas in the air collection hose, and residual gas in the air collection hose during use, which will cause errors in the blood pressure measurement result. SUMMARY

[0004] The purpose of the present application is to provide a wearable blood pressure detection device, which can improve the exhaust amount of gas in the air collection hose before measurement and improve the detection accuracy of the wearable blood pressure detection device.

[0005] The wearable blood pressure detection device provided by the present application adopts the following technical solution:

[0006] A wearable blood pressure detection device comprises

[0007] A wearing main body comprising a watch dial and a watchband, a receiving groove is formed in the inner side of the watchband;

[0008] An air collection hose and an air guide pipe, the air guide pipe is installed in the watchband and is communicated at both ends in the watch dial, the air collection hose is arranged on both sides of the watchband and is in close contact with the arm, the air guide pipe is communicated with the air collection hose, and the air collection hose can be placed in the receiving groove after deflation;

[0009] A gas pressure adjusting assembly is arranged in the watch dial and communicated with the air guide pipe, and is used for inflating and deflating the air collection hose to adjust the gas pressure in the air collection hose;

[0010] A gas pressure detection assembly comprising a pressure sensor arranged in the air guide pipe, for monitoring the gas pressure in the air collection hose;

[0011] The sliding ring is sleeved on the watchband, and the sliding ring is connected with the extrusion block slidingly arranged in the accommodating groove, and the extrusion block is used for discharging the gas in the gas collecting hose.

[0012] Optionally, when the air pressure adjusting assembly exhausts the air guide pipe, the extrusion block slides in the accommodating groove, and is used for compacting and flattening the gas collecting hose.

[0013] Optionally, the air pressure adjusting assembly comprises a sliding cylinder, a piston and a driving component group, the driving component group is used for driving the piston to reciprocate in the sliding cylinder, so as to realize the inflation and deflation of the gas collecting hose, and the sliding cylinder is connected with a communication pipe, and the communication pipe communicates with the air guide pipe.

[0014] Optionally, the dial bottom is fixedly connected with two oppositely arranged fixing bases, first and second air guide holes are respectively arranged in the two fixing bases, one end of the air guide pipe is inserted into the first air guide hole, the other end of the air guide pipe is inserted into the second air guide hole, and one-way valves with opposite air inlet directions are arranged in the first and second air guide holes, and the communication pipe can realize the alternate communication with the first and second air guide holes.

[0015] Optionally, the dial is provided with an airflow switching assembly, the airflow switching assembly comprises an airflow groove arranged in the dial, an airflow plate is slidingly arranged in the airflow groove, the airflow plate is provided with first and second airflow channels, the first airflow channel can simultaneously communicate the first air guide hole and the communication pipe, and the second airflow channel can simultaneously communicate the second air guide hole and the communication pipe.

[0016] When the airflow plate moves in the airflow groove, the communication pipe can be switched between the first and second airflow channels.

[0017] Optionally, the dial is provided with an air inlet and an air outlet, one-way valves with opposite air inlet directions are arranged in the air inlet and the air outlet, the air inlet communicates with the first airflow channel, and the air outlet communicates with the second airflow channel.

[0018] Optionally, the driving component group comprises a driving source, a driving gear, a driving gear wheel, a rotating disc and a connecting rod, a supporting base is connected to the outer wall of the sliding cylinder, the driving source is fixed on the supporting base, the driving gear is fixed on the output end of the driving source, the driving gear is engaged with the driving gear wheel, the rotating disc is fixed on one side of the driving gear wheel, one end of the connecting rod is hinged to the piston, and the other end of the connecting rod is hinged to the rotating disc.

[0019] Optionally, a limiting assembly is arranged in the airflow groove, and the limiting assembly is used for limiting the airflow plate when the first airflow channel communicates with the first air guide hole and the communication pipe or when the second airflow channel communicates with the second air guide hole and the communication pipe.

[0020] The first airflow channel communicates with the first air guide hole and the communication pipe, or the second airflow channel communicates with the second air guide hole and the communication pipe, and the airflow plate is limited.

[0021] Optionally, the limiting assembly comprises a threaded screw rod rotatably arranged in the air flow groove, the threaded screw rod is threadedly connected with the air flow plate and penetrates the air flow plate, and a motor is fixed in the air flow groove to drive the threaded screw rod to rotate.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. After measuring blood pressure, the gas in the gas collection hose is quickly discharged by squeezing the gas collection hose until the gas collection hose is flat, then the gas collection hose is stored between the watchband and the skin of the arm, and the gas collection hose is preliminarily squeezed into the accommodating groove. Move the sliding ring to the watchband, and place the gas collection hose at the bottom of the sliding block. Move the sliding ring, and the sliding block squeezes the gas collection hose to expel the gas in the gas collection hose, improving the discharge efficiency of the gas in the gas collection hose and reducing the possibility of gas in the gas collection hose. At the same time, after the sliding block squeezes the gas collection hose, the gas collection hose can be attached to the inner wall of the accommodating groove, which not only protects the gas collection hose from being pierced by external objects, but also prevents the gas collection hose from being attached to the skin, which makes it difficult for the sweat on the skin to evaporate.

[0024] While the squeezing block is squeezing the gas collection hose, the air pressure adjusting assembly is inhaling air from the gas collection hose, causing the gas collection hose to deform and the two sides of the gas collection hose to tightly adhere to each other, further reducing the possibility of residual gas in the gas collection hose and improving the accuracy of the next blood pressure measurement. Before inhaling air from the gas collection hose, the sliding block is used to squeeze the gas collection hose to expel air, which can smooth out wrinkles on the surface of the gas collection hose and ensure that the air pressure inside the gas collection hose is consistent. When the gas collection hose is inhaled, the possibility of local folding or twisting of the gas collection hose is reduced, which facilitates the storage of the gas collection hose and reduces the possibility of scratches on the skin caused by wrinkles in the gas collection hose.

[0025] 2. The air pressure adjusting assembly can inhale and inflate by reciprocating the piston in the sliding cylinder. When the gas collection hose needs to be inflated, the air flow plate is moved to connect the first air flow channel with the first air guide hole and the connecting pipe. When the piston moves up, the air flow outside the dial enters the first air flow channel and the sliding cylinder through the air inlet. When the piston moves down, the air flow enters the air guide pipe through the first air flow channel and is introduced into the gas collection hose. Since the air inlet and the first air guide hole are provided with one-way valves, air flow can only enter the first air flow from the air inlet and cannot exit from the air inlet. Similarly, air flow can only enter the air guide pipe from the first air guide hole and cannot enter the first air flow channel from the first air guide pipe.

[0026] When the gas collecting hose needs to be deflated, the air flow plate slides so that the second air flow channel simultaneously communicates with the second air guide hole and the communication pipe. When the piston moves upward, the gas in the gas collecting hose enters the second air flow channel and the slide cylinder from the second air guide hole, so that the gas in the gas collecting hose is discharged. When the piston moves downward, the gas is discharged through the air outlet. Since the air outlet and the second air guide hole are both provided with a one-way valve, the gas can only enter the second air flow channel from the air guide hole and be discharged from the air outlet. Thus, the functions of inflating and deflating the gas collecting hose are realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of a wearable blood pressure detection device according to an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the structure at the fixed seat according to an embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the cross-sectional structure of the fixed seat according to an embodiment of the present application;

[0030] Figure 4 is a schematic diagram of the cross-sectional structure of the dial according to an embodiment of the present application;

[0031] Figure 5 is a schematic diagram of the cross-sectional structure of the air flow plate according to an embodiment of the present application;

[0032] Figure 6 is a schematic diagram of the enlarged structure of the air pressure adjusting assembly according to an embodiment of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS 1, dial; 11, display panel; 2, watchband; 21, air guide pipe; 22, gas collecting hose; 23, containing groove; 3, air pressure adjusting assembly; 31, slide cylinder; 32, piston; 33, driving part group; 331, driving gear; 332, driving gear; 333, driving source; 334, connecting rod; 34, communication pipe; 35, support seat; 4, sliding ring; 41, extrusion block; 5, air flow switching assembly; 51, air flow groove; 52, inflation port; 53, deflation port; 54, air inlet; 55, air outlet; 56, one-way valve; 57, air flow plate; 571, first air flow channel; 572, second air flow channel; 6, limiting assembly; 61, threaded screw; 62, motor; 7, fixed seat; 71, first air guide hole; 72, second air guide hole; 73, clamping groove. DETAILED DESCRIPTION

[0034] REFERENCE Figures 1 to 6The application provides a wearable blood pressure detection device, which comprises a wearing main body, the wearing main body comprises a watch plate 1 and a watchband 2 which are connected with each other, and the watch plate 1 is inlaid with a display panel 11 which is used for displaying blood pressure information of a user and can also display time, weather and short message functions, and the means is a routine means for a person skilled in the art and is not described in detail here.

[0035] With reference to Figure 1 And Figure 2 two symmetrical air guide tubes 21 are arranged on the two sides of the watchband 2, a gas collecting hose 22 is arranged along the length direction of the air guide tube 21, an air pressure adjusting assembly 3 and an air pressure detection assembly are arranged in the watch plate 1, two ends of the air guide tube 21 are inserted into the watch plate 1 and connected with the air pressure adjusting assembly 3, the air pressure adjusting assembly 3 is used for inflating and deflating the air guide tube 21, the air pressure detection assembly comprises a pressure sensor arranged in the air guide tube 21, the display panel 11 can monitor the pressure change in the air guide tube 21 in real time through the pressure sensor, so as to detect the blood pressure. One side of the watchband 2 which is in contact with the skin of the user is provided with a containing groove 23, the gas collecting hose 22 can be inserted into the containing groove 23 after deflation, a sliding ring 4 is sleeved on the watchband 2, and an extrusion block 41 which is embedded in the containing groove 23 is fixedly connected to the inner wall of the sliding ring 4.

[0036] When the blood pressure needs to be detected, the gas collecting hose 22 is taken out from the containing groove 23 and placed on the two sides of the watchband 2, the air pressure adjusting assembly 3 inflates the air guide tube 21, so that the gas collecting hose 22 expands and extrudes the blood vessel, until the radial artery pulse disappears and the pressure is continuously increased by 30-40mmHg, then the air pressure adjusting assembly 3 slowly deflates the gas collecting hose 22, the pressure in the gas collecting hose 22 gradually decreases, when the pressure is equal to or slightly lower than the systolic pressure, the blood flow begins to rush through the compressed blood vessel, forms an eddy current, generates an oscillation wave, and the pressure sensor can detect the systolic pressure according to the pressure change in the gas collecting hose 22. When the pressure of the gas collecting hose 22 continues to decrease and is equal to or slightly lower than the diastolic pressure, the blood vessel completely recovers and the blood flow is no longer hindered, and the oscillation wave also changes accordingly, so as to determine the diastolic pressure.

[0037] After the blood pressure detection is completed, the air pressure adjusting assembly 3 continues to deflate the air tube 21, and at the same time, the air tube 22 is extruded to accelerate the exhaust efficiency of the gas in the air tube 22, until the air tube 22 becomes flat, then the air tube 22 is inserted into the containing groove 23, the sliding ring 4 is pushed, so that the extrusion block 41 enters the containing groove 23 and covers above the air tube 22, when the sliding ring 4 moves on the watchband 2, the extrusion block 41 extrudes the air tube 22, the extrusion block 41 can extrude the residual gas in the air tube 22, so that the gas in the air tube 22 is exhausted more thoroughly. And when the extrusion block 41 moves on the air tube 22, the air tube 22 is attached to the inner wall of the containing groove 23, so that the air tube 22 is not easy to leak out of the containing groove 23, which not only protects the air tube 22 from being pierced by external objects, but also avoids the air tube 22 being attached to the skin, causing the sweat on the skin to be difficult to evaporate.

[0038] After the air tube 22 is inserted into the containing groove 23, the air pressure adjusting assembly 3 continues to inhale the air tube 22, under the double cooperation of the air pressure adjusting assembly 3 and the extrusion block 41, the exhaust efficiency of the air tube 22 is improved, and the gas in the air tube 22 is exhausted more thoroughly, improving the accuracy of blood pressure measurement. When a single air pressure adjusting assembly 3 is used to exhaust the air tube 22, a negative pressure is formed inside the air tube 22, and the wall of the air tube 22 is inwardly contracted under the action of external atmospheric pressure. Due to the difference in air pressure in each part of the air tube 22, the air tube 22 is prone to wrinkling when it is contracted. The extrusion block 41 can smooth the wrinkles on the surface of the air tube 22 during movement, and can keep the air pressure inside the air tube 22 consistent. When the air tube 22 is inhaled, the possibility of local folding or twisting of the air tube 22 is reduced, which is convenient for storage of the air tube 22 and reduces the possibility of scratching the skin caused by wrinkles in the air tube 22.

[0039] Referring to Figure 5 and Figure 6The air pressure adjusting assembly 3 comprises a sliding cylinder 31 fixed in the dial plate 1, a piston 32 and a driving component set 33 for driving the piston 32 to move in the sliding cylinder 31 are slidably arranged in the sliding cylinder 31, a communication pipe 34 is arranged at one end of the sliding cylinder 31 and can communicate with the air guide pipe 21, a supporting seat 35 is fixedly connected to the outer wall of the sliding cylinder 31, the driving component set 33 comprises a driving gear 331 and a driving gear 332 rotatably arranged on the supporting seat 35, the driving gear 331 is engaged with the driving gear 332, a driving source 333 is arranged on the supporting seat 35, the driving gear 331 is fixed on the output end of the driving source 333, a driving disc is fixedly connected to one side of the driving gear 332, a connecting rod 334 is rotatably connected to the side of the driving disc away from the driving gear 332, and the other end of the connecting rod 334 is inserted into the sliding cylinder 31 and hinged to the piston 32.

[0040] When the driving source 333 is started, the driving gear 331 drives the driving gear 332 to rotate, the driving gear 332 drives the driving disc to move in a circle when rotating, one end of the connecting rod 334 moves in a circle following the driving disc, the other end of the connecting rod 334 drives the piston 32 to move vertically and reciprocally in the sliding cylinder 31, and when the piston 32 moves upward in the sliding cylinder 31, the external air is sucked into the sliding cylinder 31, and when the piston 32 moves downward in the sliding cylinder 31, the air in the sliding cylinder 31 is delivered to the air guide pipe 21 through the communication pipe 34 and inflates the air collecting hose 22.

[0041] With reference to Figure 5 The dial plate 1 is provided with an air flow switching assembly 5, the air flow switching assembly 5 comprises an air flow groove 51 arranged in the dial plate 1, the bottom wall of the air flow groove 51 is provided with an inflation port 52 and a deflation port 53, the two ends of the air guide pipe 21 are communicated with the inflation port 52 and the deflation port 53 respectively, the two side walls of the air flow groove 51 are provided with an air inlet 54 and an air outlet 55 penetrating through the dial plate 1, the air inlet 54 and the air outlet 55 are provided with one-way valves 56, wherein the one-way valve 56 of the air inlet 54 can make the external air enter the air flow groove 51, and the one-way valve 56 of the air outlet 55 can make the air in the air flow groove 51 flow outward, and one side wall of the air flow groove 51 is provided with a gap for the communication pipe 34 to be inserted.

[0042] With reference to Figure 4 and Figure 5, the air flow groove 51 is slidably provided with an air flow plate 57, the air flow plate 57 is provided with a first air flow channel 571 and a second air flow channel 572, one end of the first air flow channel 571 penetrates one side of the air flow plate 57 and is communicated with the air inlet 54, and one end of the second air flow channel 572 penetrates the other side of the air flow plate 57 and is communicated with the air outlet 55. When the air flow plate 57 moves in the air flow groove 51 towards the air outlet 55, the first air flow channel 571 can be simultaneously communicated with the air inlet 52 and the communication pipe 34, and when the air flow plate 57 moves towards the air inlet 54, the second air flow channel 572 can be simultaneously communicated with the air outlet 53 and the communication pipe 34.

[0043] With reference to Figure 4 , the air flow groove 51 is provided with a limiting assembly 6 for fixing the air flow plate 57, the limiting assembly 6 comprises a threaded screw rod 61 rotatably arranged in the air flow groove 51, the sidewall of the air flow groove 51 is fixedly connected with a motor 62 for driving the threaded screw rod 61 to rotate, the threaded screw rod 61 penetrates the air flow plate 57, and the threaded screw rod 61 is threadedly connected with the air flow plate 57. When the motor 62 drives the threaded screw rod 61 to rotate, the air flow plate 57 can reciprocate in the air flow groove 51 according to the rotating direction of the threaded screw rod 61, when the air flow plate 57 moves to abut against the wall of the air flow groove 51 provided with the air inlet 54, at this time, the first air flow channel 571 is simultaneously communicated with the air inlet 52 and the communication pipe 34. When the motor 62 reversely drives the air flow plate 57 to move to abut against the wall of the air flow groove 51 provided with the air outlet 55, the second air flow channel 572 is communicated with the air outlet 53 and the communication pipe 34 at this time.

[0044] With reference to Figures 2 to 5 , the bottom of the dial 1 is fixedly connected with two symmetrical fixing seats 7, one of the fixing seats 7 is provided with a first air guide hole 71, the first air guide hole 71 is communicated with the air inlet 52, the other fixing seat 7 is provided with a second air guide hole 72, the second air guide hole 72 is communicated with the air outlet 53, the first air guide hole 71 and the second air guide hole 72 are provided with one-way valves 56 with opposite air inlet directions, one end of the air guide pipe 21 is inserted into the first air guide hole 71, the other end of the air guide pipe 21 is inserted into the second air guide pipe 21, the one-way valve 56 in the first air guide hole 71 can make the air flow from the air inlet 52 into the air guide pipe 21, and the one-way valve 56 in the second air guide hole 72 can make the air in the air guide pipe 21 discharged from the air outlet 53.

[0045] With reference to Figure 2 , the outer wall of the fixing seat 7 is provided with a clamping groove 73 communicated with the accommodating groove 23, the sliding ring 4 is sleeved on the fixing seat 7, and the extrusion block 41 is clamped into the clamping groove 73, in use, the sliding ring 4 is moved to the watchband 2, and the extrusion block 41 enters the accommodating groove 23 to extrude the air collecting hose 22.

[0046] When the air flow plate 57 moves towards the air outlet 55 and the first air flow channel 571 is in communication with the air inlet 52 and the communication pipe 34 at the same time, the piston 32 moves upwards in the sliding cylinder 31, the external air flow enters the first air flow channel 571 from the air inlet 54 and enters the sliding cylinder 31, when the piston 32 moves downwards, the air flow moves from the sliding cylinder 31 towards the air inlet 52 and enters the air collecting hose 22 through the first air guide hole 71, thereby realizing the air charging function of the air collecting hose 22, and when the air in the air collecting hose 22 is full, the piston is stopped by the resistance of the high air pressure in the air collecting hose 22. Due to the arrangement of the one-way valve 56, the air in the air collecting hose 22 cannot be discharged from the first air guide hole 71 when the piston 32 moves upwards.

[0047] When it is necessary to deflate the air collecting hose 22, the air flow plate 57 is moved towards the air inlet 54 until the second air flow channel 572 is in communication with the air outlet 53 and the communication pipe 34 at the same time, the air in the air collecting hose 22 is gradually discharged from the air outlet, and when the driving source 333 drives the piston 32 to move upwards in the sliding cylinder 31, the air flow from the air collecting hose 22 enters the second air flow channel 572 through the second air guide hole 72 and then enters the sliding cylinder 31, thereby discharging the air in the air collecting hose 22, and when the piston 32 moves downwards in the sliding cylinder 31, the air flow in the sliding cylinder 31 is discharged from the air outlet 55 through the second air flow channel 572. When the air in the air collecting hose 22 is completely discharged, the piston 32 is stopped by the pressure difference between the second air flow channel 572 and the external air, at this time, the inside of the air collecting hose 22 is in a vacuum state, indicating that the air in the air collecting hose 22 is completely discharged, which can improve the accuracy of air pressure monitoring.

[0048] When the air collecting hose 22 is pressed by the pressing block 41, the pressure of the pressing block 41 is uniformly transmitted to the surface of the air collecting hose 22, forcing the air collecting hose 22 to contract along the pressure direction, and the unpressed area extends to the gap of the inner wall of the accommodating groove 23, so that the air collecting hose 22 can be fixed on the inner wall of the accommodating groove 23, reducing the contact between the air collecting hose 22 and the skin and improving the comfort of the skin.

[0049] At the same time, the pressing block 41 can smooth the air collecting hose 22 during movement, reducing the possibility of wrinkles on the air collecting hose 22, which can reduce the possibility of damage to the skin caused by wrinkles and reduce the possibility of rupture of the air collecting hose 22 at the wrinkle.

[0050] The implementation principle of the wearable blood pressure detection device is as follows: when measuring blood pressure, the gas collecting hose 22 is taken out of the accommodating groove 23, the airflow plate 57 is slid to make the first airflow channel 571 communicate with the inflation port 52 and the communication pipe 34 at the same time, the driving source 333 drives the piston 32 to slide in the sliding cylinder 31, when the piston 32 moves upward in the sliding cylinder 31, the airflow enters the sliding cylinder 31 from the air inlet 54, when the piston 32 moves downward in the sliding cylinder 31, the airflow in the sliding cylinder 31 enters the gas collecting hose 22 from the sliding cylinder 31 towards the first air guide hole 71, and then the gas collecting hose 22 is inflated, when the air pressure in the gas collecting hose 22 reaches a standard value, the deflation of the gas collecting hose 22 is started, the airflow plate 57 is slid to make the second airflow channel 572 communicate with the air outlet 53 and the communication pipe 34 at the same time, when the driving source 333 drives the piston 32 to move upward in the sliding cylinder 31, the airflow in the gas collecting hose 22 flows towards the sliding cylinder 31 through the second air guide hole 72, and when the piston 32 moves downward in the sliding cylinder 31, the airflow in the sliding cylinder 31 is discharged from the air outlet 55 through the second airflow channel 572.

[0051] During the deflation of the gas collecting hose 22, the pressure in the gas collecting hose 22 gradually decreases, when the pressure decreases to equal to or slightly lower than the systolic pressure, the blood flow starts to rush through the compressed blood vessel, forms an eddy current, generates an oscillation wave, and the pressure sensor can detect the systolic pressure according to the pressure change in the gas collecting hose 22. When the pressure in the gas collecting hose 22 continues to decrease to equal to or slightly lower than the diastolic pressure, the blood vessel completely recovers to be unobstructed, the blood flow is no longer hindered, and the oscillation wave also changes accordingly to determine the diastolic pressure.

[0052] After the blood pressure detection is completed, the deflation of the gas collecting hose 22 is continued until the gas collecting hose 22 becomes flat, then the gas collecting hose 22 is inserted into the accommodating groove 23, the sliding ring 4 is actuated to make the extrusion block 41 enter the accommodating groove 23 and cover above the gas collecting hose 22, when the sliding ring 4 moves on the watchband 2, the extrusion block 41 applies an extrusion force to the gas collecting hose 22, the extrusion block 41 can extrude the residual gas in the gas collecting hose 22, so that the gas in the gas collecting hose 22 is discharged more thoroughly.

[0053] And the extrusion block 41 extrudes while the air pressure adjusting assembly 3 inhales the gas in the gas collecting hose 22, until the inside of the gas collecting hose 22 is under negative pressure and deformed, the two sides of the gas collecting hose 22 are tightly attached together, further reducing the possibility of residual gas in the inside of the gas collecting hose 22, and improving the accuracy of the next blood pressure measurement.

[0054] The embodiments of the specific implementation are the preferred embodiments of the application, and are not intended to limit the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A wearable blood pressure detection device, characterized by, Comprising The wearing main body includes a watch dial (1) and a watchband (2), and a containing groove (23) is formed in the inner side of the watchband (2); A gas collecting hose (22) and a gas guide pipe (21) are installed in the watchband (2) and are communicated at both ends in the watch dial (1), the gas collecting hose (22) is arranged on both sides of the watchband (2) and is attached to the arm, the gas guide pipe (21) is communicated with the gas collecting hose (22), and the gas collecting hose (22) can be placed in the containing groove (23) after being deflated; A gas pressure adjusting assembly (3) is arranged in the watch dial (1) and is communicated with the gas guide pipe (21), and is used for inflating and deflating the gas collecting hose (22) to adjust the gas pressure in the gas collecting hose (22); A gas pressure detecting assembly includes a pressure sensor arranged in the gas guide pipe (21) and used for monitoring the gas pressure in the gas collecting hose (22); A sliding ring (4) is sleeved on the watchband (2), the sliding ring (4) is connected with an extrusion block (41) which is slidably arranged in the containing groove (23), and the extrusion block (41) is used for discharging the gas in the gas collecting hose (22); When the gas pressure adjusting assembly (3) discharges the gas guide pipe (21), the sliding ring (4) is actuated, so that the extrusion block (41) enters the containing groove (23) and covers the gas collecting hose (22), when the sliding ring (4) moves on the watchband (2), the extrusion block (41) slides in the containing groove (23), the extrusion block (41) applies extrusion force to the gas collecting hose (22), the gas collecting hose (22) is attached to the inner wall of the containing groove (23), the gas collecting hose (22) is protected, the two side surfaces of the gas collecting hose (22) are tightly attached together, the extrusion block (41) extrudes the residual gas in the gas collecting hose (22), the gas collecting hose (22) is compacted and flattened, and the gas pressure in the gas collecting hose (22) is kept consistent; The gas pressure adjusting assembly (3) includes a sliding cylinder (31), a piston (32) and a driving element group (33), the driving element group (33) is used for driving the piston (32) to reciprocate in the sliding cylinder (31), so as to realize the inflation and deflation of the gas collecting hose (22), and the sliding cylinder (31) is connected with a communicating pipe (34), and the communicating pipe (34) is communicated with the gas guide pipe (21); Two oppositely arranged fixed seats (7) are fixedly connected to the bottom of the watch dial (1), a first gas guide hole (71) and a second gas guide hole (72) are respectively formed in the two fixed seats (7), one end of the gas guide pipe (21) is inserted into the first gas guide hole (71), the other end of the gas guide pipe (21) is inserted into the second gas guide hole (72), one-way valves (56) with opposite gas inlet directions are arranged in the first gas guide hole (71) and the second gas guide hole (72), and the communicating pipe (34) can realize alternate communication with the first gas guide hole (71) and the second gas guide hole (72); The dial (1) is internally provided with an airflow switching assembly (5), the airflow switching assembly (5) comprises an airflow groove (51) opened in the dial (1), the airflow groove (51) is internally slidably provided with an airflow plate (57), the airflow plate (57) is internally provided with a first airflow channel (571) and a second airflow channel (572), the first airflow channel (571) can simultaneously communicate the first air guide hole (71) and the communication pipe (34), the second airflow channel (572) can simultaneously communicate the second air guide hole (72) and the communication pipe (34); When the airflow plate (57) moves in the airflow groove (51), the communication pipe (34) can switch between the first airflow channel (571) and the second airflow channel (572); The driving element group (33) comprises a driving source (333), a driving gear (331), a driving gear (332), a rotating disc and a connecting rod (334), the outer wall of the sliding cylinder (31) is connected with a support seat (35), the driving source (333) is fixed on the support seat (35), the driving gear (331) is fixed on the output end of the driving source (333), the driving gear (331) is engaged with the driving gear (332), the rotating disc is fixed on one side of the driving gear (332), one end of the connecting rod (334) is hinged on the piston (32), and the other end of the connecting rod (334) is hinged on the rotating disc.

2. The wearable blood pressure detection device according to claim 1, wherein The dial (1) is internally provided with an airflow switching assembly (5), the airflow switching assembly (5) comprises an airflow groove (51) opened in the dial (1), the airflow groove (51) is internally slidably provided with an airflow plate (57), the airflow plate (57) is internally provided with a first airflow channel (571) and a second airflow channel (572), the first airflow channel (571) can simultaneously communicate the first air guide hole (71) and the communication pipe (34), the second airflow channel (572) can simultaneously communicate the second air guide hole (72) and the communication pipe (34); 3. The wearable blood pressure detection device according to claim 1, wherein The airflow groove (51) is internally provided with a limiting assembly (6), the limiting assembly (6) is used for limiting the airflow plate (57) when the first airflow channel (571) communicates with the first air guide hole (71) and the communication pipe (34), or when the second airflow channel (572) communicates with the second air guide hole (72) and the communication pipe (34).

4. The wearable blood pressure detection device according to claim 3, wherein The limiting assembly (6) comprises a threaded screw rod (61) rotatably arranged in the airflow groove (51), the threaded screw rod (61) is threadedly connected with the airflow plate (57) and penetrates the airflow plate (57), and the airflow groove (51) is fixedly provided with a motor (62) for driving the threaded screw rod (61) to rotate.

Images