阅读说明：本技术 一种血压监测装置 (Blood pressure monitoring device ) 是由 陈凯斌 盛奕冰 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种血压监测装置,可以实现日常佩戴,使用者或其看护人员可以随时获取血压变化情况。其技术方案要点是：包括测量主体、佩戴机构、显示面板和气囊机构,测量主体包括壳体和设于壳体中的气泵、开关阀组件、传感器组件和控制电路模块,壳体中设有气室,其中,气泵用于向气囊机构充气；气室设置于气泵与气囊机构之间的气体通道中；开关阀组件用于控制气泵与气室之间气体通道的通断；传感器组件用于检测气室中的压力变化；控制电路模块整个装置中的气流方向及通断状态,并用于测量数据的传输和处理；佩戴机构与壳体形成可环绕手腕一周固定的环形测量结构,气囊机构设于环形测量结构与手腕处皮肤表面之间。(The invention discloses a blood pressure monitoring device which can be worn daily, and a user or a nursing person thereof can acquire the change condition of blood pressure at any time. The key points of the technical scheme are as follows: the device comprises a measuring main body, a wearing mechanism, a display panel and an air bag mechanism, wherein the measuring main body comprises a shell, and an air pump, a switch valve assembly, a sensor assembly and a control circuit module which are arranged in the shell; the air chamber is arranged in an air channel between the air pump and the air bag mechanism; the switch valve component is used for controlling the on-off of the air channel between the air pump and the air chamber; the sensor assembly is used for detecting pressure change in the air chamber; the control circuit module controls the airflow direction and the on-off state in the whole device and is used for transmitting and processing the measurement data; the wearing mechanism and the shell form an annular measuring structure which can be fixed around the wrist for one circle, and the air bag mechanism is arranged between the annular measuring structure and the skin surface of the wrist.)

1. A blood pressure monitoring device, includes measuring main part (1), wears mechanism (2) and display panel (3), its characterized in that: the device also comprises an air bag mechanism (4), the measuring main body (1) comprises a shell (10), and an air pump (11), a switch valve component (12), a sensor component (13) and a control circuit module (14) which are arranged in the shell (10), an air chamber (16) is arranged in the shell (10),

-an air pump (11) in communication with said airbag means (4) through an air passage for inflating the airbag means (4);

-an air chamber (16) arranged in the air passage between the air pump (11) and the airbag mechanism (4) as a hinge for the transport of gas in the air passage;

-a switch valve assembly (12) arranged in the gas passage between the gas pump (11) and the gas chamber (16) for controlling the on-off of the gas passage between the gas pump (11) and the gas chamber (16);

-a sensor assembly (13), a sensing end of the sensor assembly (13) being in communication with the gas chamber (16) for detecting pressure changes in the gas chamber (16);

-a control circuit module (14) electrically connected to the air pump (11), the switch valve assembly (12) and the sensor assembly (13), respectively, for controlling the air flow direction and the on-off state inside the measuring body (1) and the air bag mechanism (4), and for transmitting and processing the measurement data;

wear mechanism (2) including the fixed band, casing (10) are connected to the fixed band, and the fixed band forms the annular measurement structure that can encircle wrist a week fixed with casing (10), gasbag mechanism (4) are located between annular measurement structure and the wrist skin surface.

2. A blood pressure monitoring device according to claim 1, wherein: the air bag mechanism (4) comprises a reinforcing air bag (40) and a detection air bag (41), the reinforcing air bag (40) is arranged on one side of the shell (10) facing the wrist, and the reinforcing air bag (40) covers the skin surface of the back of the wrist; the detection air bag (41) is arranged on one side, facing the wrist, of the fixing band, the detection air bag (41) is located on the position, corresponding to the detected part, of the fixing band, the detected part is the skin surface, on the same side of the palm, of the wrist, and the detection air bag (41) covers the detected part.

3. A blood pressure monitoring device according to claim 2, wherein: the switch valve assembly (12) comprises a first switch valve (120) and a second switch valve (121), the sensor assembly (13) comprises a first sensor (130) and a second sensor (131), and the air chamber (16) comprises a first air chamber (160) and a second air chamber (161) which are separated from each other; the reinforcing air bag (40), the first air chamber (160) and the air pump (11) are sequentially communicated to form a first air path, the first switch valve (120) is arranged in the first air path, and the first sensor (130) is arranged in the first air chamber (160); the detection air bag (41), the second air chamber (161) and the air pump (11) are sequentially communicated to form a second air path, the second switch valve (121) is arranged in the second air path, and the second sensor (131) is arranged in the second air chamber (161).

4. A blood pressure monitoring device according to claim 2, wherein: air chamber (16) are located casing (10) and press close to the one side of wrist skin, and air chamber (16) are formed by casing (10) inside sunken and form opening (162) on casing (10) surface, and air chamber (16) are left and are used for the intercommunication inlet port (163) of air pump (11) and are used for putting into the embedding hole (164) of response end, opening (162) are equipped with seals board (5), seal board (5) and be equipped with air transmission interface (50) that are used for connecting gasbag mechanism (4).

5. A blood pressure monitoring device according to claim 4, wherein: the air inlet hole (163) with inlay hole (164) all set up in the bottom of air chamber (16), the bottom of air chamber (16) is equipped with first bottom surface (165) and second bottom surface (166), first bottom surface (165) and second bottom surface (166) are the echelonment setting, air inlet hole (163) with inlay hole (164) sets up respectively on first bottom surface (165) and second bottom surface (166), first bottom surface (165) with seal the distance between board (5) and be greater than second bottom surface (166) with seal the distance between board (5).

6. A blood pressure monitoring device according to claim 4, wherein: still including sizing board (6), sizing board (6) also set up the one side of pressing close to wrist skin in casing (10), and sizing board (6) are left to be used for through-hole (60) that gas transmission interface (50) passed, and sizing board (6) are the plane with the surface of casing (10) coupling part, and sizing board (6) both ends are equipped with symmetrical arc extension board (61), arc extension board (61) are towards wrist bending in order to laminate wrist department skin, and two arc extension boards (61) make sizing board (6) towards the one side of wrist skin form the concave surface, it is fixed in to consolidate gasbag (40) laminating in the concave surface of sizing board (6).

7. A blood pressure monitoring device according to claim 2, wherein: the fixing belt is made of non-elastic materials or non-elastic structures and comprises a left half belt (20) and a right half belt (21) which are respectively connected with the left side and the right side of the shell (10), and the left half belt (20) and the right half belt (21) are in adjustable connection; the detection airbag (41) is positioned on the inner side of the left half belt (20) or the right half belt (21).

8. A blood pressure monitoring device according to claim 2, wherein: the airbag mechanism (4) adopts a layered structure, and a vent hole (403) for gas flow is reserved between every two layers.

9. A blood pressure monitoring device according to claim 8, wherein: consolidate gasbag (40) and/or detect gasbag (41) and constitute by monolithic layer (400) and the biplate layer (401) of crossing setting in proper order, biplate layer (401) include two sub-pieces (4010), and two sub-pieces (4010) middle part annular sealing connection form first air cavity (404), neighbouring sub-piece (4010) is connected at the edge in monolithic layer (400) and adjacent biplate layer (401), forms second air cavity (405), between adjacent first air cavity (404) and second air cavity (405), all be linked together through air vent (403) between two adjacent second air cavities (405), monolithic layer (400) that are close to wrist skin one end are sealed completely, and the monolithic layer (400) of dorsad wrist skin one end is equipped with inflation inlet (402).

10. A blood pressure monitoring device according to claim 1, wherein: air pump (11) adopt miniature diaphragm formula air pump (11), and air pump (11) are fixed in casing (10) bottom surface and are close to casing (10) inside wall setting, and the below of air pump (11) is equipped with runner plate (15) that forms airflow channel (150) with casing (10) bottom surface cooperation, runner plate (15) extend to ooff valve subassembly (12) below along casing (10) bottom surface, runner plate (15) be equipped with first airflow hole (151) of air pump (11) intercommunication and second airflow hole (152) that feed through with ooff valve subassembly (12).

Technical Field

The invention relates to the technical field of blood pressure measurement, in particular to a blood pressure monitoring device.

Background

Blood pressure is an important physiological parameter reflecting human vital signs, and along with the development trend of aging in China, hypertension becomes a main risk factor for coronary heart disease, stroke and even death of people in China. Hypertension has seriously threatened the physical health of residents in China, so that the change of the blood pressure becomes an important concern for clinical medical treatment and daily health management.

The demand for accurate, fast and convenient blood pressure measurement is increasing, and most of the sphygmomanometer on the market at present are cuff sphygmomanometers which are sleeved on arms of users for measurement or are designed into wrist sphygmomanometers with reduced cuffs. The measurement error is easily caused when the arm is measured to the wrist, and a more accurate blood pressure monitoring device and a corresponding control method are needed.

Disclosure of Invention

The present invention is directed to solve the above problems in the prior art, and an object of the present invention is to provide a blood pressure monitoring device, which can be worn daily, and can detect blood pressure value quickly at any time and place, so that a user or a caregiver thereof can obtain blood pressure change at any time, and technically improve the speed and accuracy of blood pressure value measurement by a special air bag structure and a measurement control method.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

a blood pressure monitoring device comprises a measuring main body, a wearing mechanism, a display panel and an air bag mechanism, wherein the measuring main body comprises a shell, and an air pump, a switch valve assembly, a sensor assembly and a control circuit module which are arranged in the shell, an air chamber is arranged in the shell, wherein,

-an air pump in communication with the air bladder mechanism through an air passage for inflating the air bladder mechanism;

-an air chamber arranged in the air passage between the air pump and the airbag mechanism as a hinge for gas transport in the air passage;

the switch valve assembly is arranged in the air channel between the air pump and the air chamber and is used for controlling the on-off of the air channel between the air pump and the air chamber;

-a sensor assembly, a sensing end of which is in communication with the gas chamber, for detecting pressure changes in the gas chamber;

the control circuit module is electrically connected with the air pump, the switch valve assembly and the sensor assembly respectively, is used for controlling the air flow direction and the on-off state in the measuring main body and the air bag mechanism, and is used for transmitting and processing measuring data;

the wearing mechanism comprises a fixing band, the fixing band is connected with the shell, the fixing band and the shell form an annular measuring structure which can be fixed around the wrist for a circle, and the air bag mechanism is arranged between the annular measuring structure and the skin surface of the wrist.

Compared with the prior art, the blood pressure monitoring device adopting the technical scheme has the following beneficial effects:

in the invention, the air bag mechanism can be regarded as a sensor of pulse signals, the blood pressure value and the heart rate condition can be known by detecting the change amplitude and the change frequency of the air pressure in the air bag mechanism, the air chamber is arranged in the air channel communicated with the air bag mechanism, the air pressure of the air chamber can be always consistent with the air pressure of the air bag mechanism, the blood pressure change condition can be known by detecting the air pressure change condition in the air chamber during detection, and the air chamber is uniformly filled with the air and is arranged in the shell, so that the influence of external force factors is small, the mobility of the air in the air chamber is poor, the air can be more uniformly expanded and contracted in the air chamber, the noise of the pulse wave signals is reduced, and the accuracy of the detection result is improved.

Preferably, the air bag mechanism comprises a reinforcing air bag and a detecting air bag, the reinforcing air bag is arranged on one side of the shell facing the wrist, and the reinforcing air bag covers the skin surface of the back of the wrist; the detection air bag is arranged on one side, facing the wrist, of the fixing band, is located on the fixing band and corresponds to the detected part, the detected part is the skin surface, on the same side with the palm, of the wrist, and the detection air bag covers the detected part.

Establish two gasbag interactions of reinforcing gasbag and detection gasbag in the gasbag mechanism, the reinforcing gasbag inflation can guarantee that the user homoenergetic under the condition of different wearing elasticity enables test data assurance accuracy. The reinforcing air bag plays a compensation role in the process of measuring the blood pressure.

Preferably, the switching valve assembly includes a first switching valve and a second switching valve, the sensor assembly includes a first sensor and a second sensor, and the air chamber includes a first air chamber and a second air chamber separated from each other; the reinforcing air bag, the first air chamber and the air pump are sequentially communicated to form a first air path, the first switch valve is arranged in the first air path, and the first sensor is arranged in the first air chamber; the detection air bag, the second air chamber and the air pump are sequentially communicated to form a second air path, the second switch valve is arranged in the second air path, and the second sensor is arranged in the second air chamber.

Aiming at different functions to be realized by the reinforcing air bag and the detecting air bag, the two air bags are controlled and detected by relatively independent air circuits, so that the reinforcing air bag and the detecting air bag are controlled by accurate air pressure respectively, the air circuits of the reinforcing air bag and the detecting air bag are not influenced by each other, and the air pressure change conditions of the two air bags are detected and calculated independently, so that the detection result is more accurate.

Preferably, the air chamber is located the one side that wrist skin is pressed close to the casing, and the air chamber is kept away by the casing and is used for the intercommunication the inlet port of air pump with be used for putting into the embedding hole of response end, the opening is equipped with seals the board, seal the board and be equipped with the gas transmission interface that is used for connecting gasbag mechanism, the air chamber is by the inside sunken formation of casing and locate the back, is favorable to reducing the occupation to the internal space of casing, and the structure is more reasonable, and gas transmission interface also is located the casing back, is convenient for with being connected of gasbag mechanism.

Preferably, the air inlet hole and the embedding hole are arranged at the bottom of the air chamber, a first bottom surface and a second bottom surface are arranged at the bottom of the air chamber, the first bottom surface and the second bottom surface are arranged in a step shape, the air inlet hole and the embedding hole are respectively arranged on the first bottom surface and the second bottom surface, and the distance between the first bottom surface and the sealing plate is larger than the distance between the second bottom surface and the sealing plate.

The following beneficial effects can be achieved through the scheme:

1. the air inlet and the induction end are separated by the maximum distance, so that the influence caused by air flow impact and air flow convergence is prevented (when the air pump is inflated, the air inlet impacts air in the air chamber to cause air pressure oscillation, and pulse waves change the air pressure in the air bag to generate backflow signals, particularly, in the inflating process, the flowing directions of the air pressure oscillation generated by inflation and the backflow signals generated by the air bag are opposite, and stronger air flow fluctuation is caused when the air flow impact and the air flow converge);

2. the air inlet hole is positioned in the deeper air chamber cavity, mainly because the flow speed of the air with the same flow rate in the flow channel with smaller space is faster, the impact and the corresponding signal noise caused by the air flow speed are larger, and the air inlet hole communicated with the air pump is positioned on the deeper first bottom surface.

Preferably, still including the stereotype board, the stereotype board also sets up the one side of pressing close to wrist skin at the casing, and the stereotype board is left to be used for the through-hole that the air transmission interface passed, the surface of stereotype board and casing coupling part is the plane, and stereotype board both ends are equipped with symmetrical arc extension plate, the arc extension plate is crooked in order to laminate wrist department skin towards the wrist, and two arc extension plates make the one side of stereotype board towards wrist skin form the concave surface, it is fixed in to consolidate the gasbag laminating in the concave surface of stereotype board.

The concave surface formed by the arc-shaped extension plate is more attached to the skin surface of the wrist, so that the blood pressure monitoring device can be stably fixed on the wrist under the condition that whether the reinforcing air bag is inflated or not, and the wrist is effectively prevented from rotating and slipping; the arc-shaped extension plates on the two sides can limit the deformation direction of the reinforcing air bag, so that the reinforcing air bag can expand towards the surface of the wrist when being inflated, gaps between the reinforcing air bag and the two sides of the wrist are avoided, and the reinforcing air bag is not well attached to the surface of the wrist, so that the situations of stable fixing part, uncomfortable wearing and large error of air pressure detection result are avoided; the concave surface formed by the arc-shaped extension plate is also beneficial to strengthening the connection strength of the reinforcing air bag and the shaping plate.

Preferably, the fixing belt is made of a non-elastic material or a non-elastic structure and comprises a left half belt and a right half belt which are respectively connected with the left side and the right side of the shell, and the left half belt and the right half belt are in adjustable connection; the detection air bag is positioned on the inner side of the left half belt or the right half belt and is communicated with the air chamber through an air guide channel, and an inelastic fixing belt is adopted, so that a pressure signal sensed by the air bag can be transmitted to the pressure sensor without loss, and the accuracy of a detection result is improved.

Preferably, the air bag mechanism is of a laminated structure, with vent holes for gas flow between each layer.

Preferably, the reinforcing air bag and/or the detecting air bag are formed by a single-piece layer and a double-piece layer which are sequentially arranged in a crossed mode, the double-piece layer comprises two sub-pieces, the middle portions of the two sub-pieces are connected in an annular sealing mode to form a first air cavity, the single-piece layer is connected with the adjacent sub-pieces in the adjacent double-piece layer at the edge to form a second air cavity, the adjacent first air cavity and the second air cavity and the adjacent two second air cavities are communicated through vent holes, the single-piece layer close to one end of the wrist skin is completely sealed, and the single-piece layer opposite to one end of the wrist skin is provided with an inflation inlet.

When detecting blood pressure, because consolidate the gasbag/detect the gasbag and need paste closely and extrude wrist department skin, the main contact site of gasbag and skin is in the middle part region at the gasbag generally, aerify inflation in-process at the gasbag, gaseous can be because the extrusion spreads to the edge, lead to gaseous respectively inhomogeneous (most of gas distribution is around the gasbag) in the gasbag, then lead to the gasbag to expand all around and the middle part is thinner, not only influence the effect of wearing, rigid pressure signal is impaired moreover, influences the accuracy nature that detects.

By adopting the layered structure, gas can be displayed in the first gas cavity and the second gas cavity in multiple layers during inflation and expansion, so that the flow of the gas to the edge is reduced; at the junction of the sub-piece in monolithic layer and the biplate layer, the monolithic layer has an inside pull-back effect, can prevent gasbag edge overexpansion, and the monolithic layer and the biplate layer of cross connection are drawn back each other and are restrained, further avoid the gasbag in the edge overexpansion, improve the homogeneity of gas in consolidating the gasbag/detecting the gasbag, promote and wear the comfort level, improve the accuracy nature that detects.

Preferably, the air pump adopts miniature diaphragm formula air pump, and the air pump is fixed in the casing bottom surface and is close to the setting of casing inside wall, and the below of air pump is equipped with the flow path board that forms airflow channel with the cooperation of casing bottom surface, the flow path board extends to the ooff valve subassembly below along the casing bottom surface, the flow path board be equipped with the first airflow hole of air pump intercommunication and with the second airflow hole of ooff valve subassembly intercommunication, the kind of air pump in this scheme, set up position and flow path board's position and structure, not only functional structure is reasonable, keeps the gas circuit unobstructed, still is favorable to practicing thrift casing inner space, reduces the volume of measuring the main part.

Drawings

Fig. 1 is a schematic structural diagram of a blood pressure monitoring device according to an embodiment of the present invention.

Fig. 2 is an exploded view of the present embodiment.

Fig. 3 is a schematic structural diagram of the measurement main body in this embodiment.

Fig. 4 is a schematic structural view (back view) of the measurement subject in this embodiment.

Fig. 5 is a schematic structural diagram of the sizing plate in this embodiment.

Fig. 6 is a layout diagram of parts inside the housing in this embodiment.

Fig. 7 is an exploded view of the measurement subject in this embodiment.

Fig. 8 is a schematic structural view of the flow channel plate in this embodiment.

Fig. 9 is a schematic structural view of the gas chamber in this embodiment.

FIG. 10 is a plan view of the air cell in this embodiment.

FIG. 11 is a sectional view of the air cell in this embodiment.

Fig. 12 is a schematic structural view of the reinforcing airbag in the present embodiment.

Fig. 13 is a front view of the reinforcing airbag in the present embodiment.

Fig. 14 is a schematic structural view of a single sheet layer in this embodiment.

Fig. 15 is a schematic structural diagram of the double-layer in this embodiment.

FIG. 16 is a sectional view of the reinforcing airbag in the present embodiment.

Reference numerals: 1. a measurement subject; 10. a housing; 11. an air pump; 12. a switch valve assembly; 120. a first on-off valve; 121. a second on-off valve; 13. a sensor assembly; 130. a first sensor; 131. a second sensor; 14. a control circuit module; 15. a runner plate; 150. an air flow channel; 151. a first airflow aperture; 152. a second airflow aperture; 16. an air chamber; 160. a first air chamber; 161. a second air chamber; 162. an opening; 163. an air inlet; 164. an insertion hole; 165. a first bottom surface; 166. a second bottom surface; 2. a wearing mechanism; 20. a left half band; 21. a right half band; 3. a display panel; 4. an air bag mechanism; 40. reinforcing the air bag; 400. a single-layer; 401. a double-layer; 4010. sub-pieces; 402. an inflation inlet; 403. a vent hole; 404. a first air cavity; 405. a second air cavity; 41. detecting the air bag; 5. a sealing plate; 50. a gas transmission interface; 6. shaping plates; 60. a through hole; 61. an arc-shaped extension plate.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The blood pressure monitoring device shown in fig. 1 to 4 includes a measurement main body 1, a wearing mechanism 2, a display panel 3, and an airbag mechanism 4, wherein the measurement main body 1 includes a housing 10, and an air pump 11, a switch valve assembly 12, a sensor assembly 13, and a control circuit module 14 provided in the housing 10.

The display panel 3 is fixedly connected with the edge of the casing 10, the display panel 3 covers and encapsulates the air pump 11, the switch valve assembly 12, the sensor assembly 13 and the control circuit module 14 in the casing 10, an air chamber 16 is arranged on the back surface of the casing 10 (namely, the surface of the casing 10 opposite to the display panel 3), the air chamber 16 is formed by inward recess of the casing 10, the air chamber 16 comprises a first air chamber 160 and a second air chamber 161 which are separated from each other, an air inlet 163 for communicating the air pump 11 and an insertion hole 164 for installing the sensor assembly 13 are reserved on the first air chamber 160 and the second air chamber 161, and the sensor assembly 13 detects pressure changes in the first air chamber 160/the second air chamber 161 through the insertion hole 164.

The first air chamber 160 and the second air chamber 161 jointly form an opening 162 on the surface of the shell 10, the edge of the opening 162 is recessed inwards to form a step, a sealing plate 5 is further arranged on the edge of the opening 162, the sealing plate 5 is embedded into the opening 162 and clamped on the step, the sealing plate 5 seals the first air chamber 160 and the second air chamber 161 at the same time, the sealing plate 5 is provided with two air transmission interfaces 50, and the two air transmission interfaces 50 correspond to the first air chamber 160 and the second air chamber 161 respectively.

The air inlet hole 163 and the insertion hole 164 are disposed at the bottom of the first air chamber 160/the second air chamber 161, the bottom of the first air chamber 160/the second air chamber 161 is divided into a first bottom surface 165 and a second bottom surface 166, the first bottom surface 165 and the second bottom surface 166 are arranged in a step shape, the air inlet hole 163 and the insertion hole 164 are disposed on the first bottom surface 165 and the second bottom surface 166, respectively, and the distance between the first bottom surface 165 and the sealing plate 5 is greater than the distance between the second bottom surface 166 and the sealing plate 5.

The sensor assembly 13 and the display panel 3 are connected with the control circuit module 14, the control circuit module 14 comprises a microprocessor, and the microprocessor is responsible for processing pulse wave signals from the sensor assembly 13 and calculating blood pressure values and displaying the blood pressure values in the display panel 3.

As shown in fig. 2 and 5, the wearing mechanism 2 includes a fixing band, the fixing band is made of non-elastic material or non-elastic structure, the fixing band includes a left half-band 20 and a right half-band 21 respectively connected to the left and right sides of the housing 10, the left half-band 20 and the right half-band 21 are adjustably connected, and the left half-band 20 and the right half-band 21 together with the housing 10 form an annular measuring structure that can be fixed around the wrist; the back of casing 10 (the one side of pressing close to wrist skin) still is equipped with stereotypes board 6, and stereotypes board 6 leaves the through-hole 60 that is used for gas transmission interface 50 to pass, and stereotypes board 6 is the plane with the surface of casing 10 coupling part, and stereotypes 6 both ends of board are equipped with symmetrical arc extension board 61, arc extension board 61 is crooked in order to laminate wrist department skin towards the wrist, and two arc extension boards 61 make stereotype board 6 one side towards wrist skin form the concave surface.

As shown in fig. 6 to 11, the components in the housing 10 are arranged as follows:

the air pump 11 is a diaphragm type air pump 11, the air pump 11 is fixed on the bottom surface of the casing 10 and is arranged close to the inner side wall of the casing 10, a flow passage plate 15 which forms an air flow passage 150 with the bottom surface of the casing 10 is arranged below the air pump 11, the flow passage plate 15 extends to the lower part of the switch valve assembly 12 along the bottom surface of the casing 10, and the flow passage plate 15 is provided with a first air flow hole 151 communicated with the air pump 11 and a second air flow hole 152 communicated with the switch valve assembly 12.

The switch valve assembly 12 includes a first switch valve 120 and a second switch valve 121, the number of the second air flow holes 152 is two, the two second air flow holes 152 are respectively provided below the first switch valve 120 and the second switch valve 121, the two second air flow holes 152 are respectively connected to the first switch valve 120 and the second switch valve 121, and the first switch valve 120 and the second switch valve 121 are both connected to the air pump 11 through an air flow passage 150 in the flow passage plate 15.

The first switching valve 120 is connected to the first air chamber 160 through an air passage, and the second switching valve 121 is connected to the second air chamber 161 through an air passage.

The sensor assembly 13 comprises a sensor assembly 13 comprising a first sensor 130 and a second sensor 131, the first sensor 130 and the second sensor 131 each comprise a sensor body and a sensing end, the sensor body is integrated in the control circuit module 14, the sensing end of the first sensor 130 extends into the first air chamber 160 through the insertion hole 164 for detecting the air pressure condition in the first air chamber 160, and the sensing end of the second sensor 131 extends into the second air chamber 161 through the insertion hole 164 for detecting the air pressure condition in the second air chamber 161.

The air bag mechanism 4 comprises a reinforcing air bag 40 and a detecting air bag 41, the reinforcing air bag 40 is attached and fixed in the concave surface of the shaping plate 6, an inflation inlet 402 for connecting the air transmission interface 50 is formed in one surface, which is attached to the shaping plate 6, of the reinforcing air bag 40, the inflation inlet 402 of the reinforcing air bag 40 is connected with the air transmission interface 50 through a through hole 60, and the reinforcing air bag 40 is attached to the skin on the back of the wrist and cannot slide to the side due to the limitation of the concave surface; the detection air bag 41 is arranged at the position, corresponding to the detected part, on the inner side of the left half-band 20 or the right half-band 21, the detected part is the skin surface on the same side of the palm of the hand at the wrist, the back surface of the detection air bag 41 is connected with the inner surface of the left half-band 20 or the right half-band 21, the detection air bag 41 is communicated with the air chamber 16 through an air guide channel, a connecting port for connecting the air transmission interface 50 is arranged at the end part of the air guide channel connected with the detection air bag 41, and when a user wears the blood pressure monitoring device, the detection air bag 41 covers the detected part.

The reinforcing air bag 40, the first air chamber 160 and the air pump 11 are sequentially communicated to form an air path as a first air path; the air passage formed by sequentially communicating the detection airbag 41, the second air chamber 161 and the air pump 11 is a second air passage, and the first air passage and the second air passage are independent from each other. The first switching valve 120 is disposed in the first air path between the air pump 11 and the first air chamber 160, and the second switching valve 121 is disposed in the second air path between the air pump 11 and the second air chamber 161.

As shown in fig. 12 to 16, the reinforcing air bag 40 is constituted by a single-piece layer 400 and a double-piece layer 401 which are arranged to intersect one another in this order, the number of the single-piece layers 400 is 4, the number of the double-piece layers 401 is 3, the single-piece layers 400 and the double-piece layers 401 are specifically arranged in the following manner,

from top to bottom in proper order: single-ply layer 400 → double-ply layer 401 → single-ply layer 400.

The double-sheet layer 401 comprises two sub-sheets 4010, the middle parts of the two sub-sheets 4010 are connected in an annular sealing mode to form a first air cavity 404, a certain single-sheet layer 400 is connected with the adjacent sub-sheet 4010 in the double-sheet layer 401 adjacent to the single-sheet layer 400 at the edge, a second air cavity 405 is formed between the single-sheet layer 400 and the adjacent single sheet in the adjacent double-sheet layer 401, the adjacent first air cavity 404 and the second air cavity 405 and the adjacent two second air cavities 405 are communicated through vent holes 403, the single-sheet layer 400 close to one end of the wrist skin is completely sealed, and the air inflation port 402 is arranged on the single-sheet layer 400 back to one end of the wrist skin.

The blood pressure monitoring device of the invention is used in the following specific way:

the correct wearing mode of the embodiment is as follows: the reinforcing air bag 40 is disposed on the back of the wrist on the same plane as the back of the hand, and the detecting air bag 41 is disposed on the front of the wrist on the same plane as the center of the hand. The test proves that on the premise that the circumference of the wrist of the user is 120 mm to 220 mm, the arrangement of the reinforcing air bag 40 can ensure that the accuracy of the test data can be ensured under the condition that the blood pressure measuring device is worn with different tightness.

Before and during the wearing of the blood pressure monitoring device, the reinforcing air bag 40 and the detecting air bag 41 are in an initial state (i.e. not inflated) which is not triggered, wherein the initial state is as follows: the air pump 11, the first sensor 130, and the second sensor 131 are all in the stop state, and the first switching valve 120 and the second switching valve 121 are all in the normally open state.

After wearing, the user triggers a blood pressure measuring mechanism through buttons, induction or touch and the like, and clicks to start inflating/detecting the blood pressure.

At this time, the switch valve assembly 12 and the sensor assembly 13 inside the housing 10 are both in the operating state, the air pump 11 starts to operate, the first switch valve 120 is set to the open state, the second switch valve 121 is set to the closed state, and the air pump 11 inflates the first air chamber 160 through the first switch valve 120 in the open state, and then inflates the reinforcing air bag 40.

During the inflation and expansion of the reinforcing air bag 40, the reinforcing air bag 40 starts to sense the pulse wave signal and simultaneously transmits the pulse wave signal to the first air chamber 160, the first sensor 130 detects the pulse wave signal in the first air chamber 160 and transmits the pulse wave signal to the microprocessor, the microprocessor calculates the intensity and frequency of the pulse wave signal, when the pulse wave signal in the reinforcing air bag 40 detected by the first sensor 130 reaches a preset amplitude value, the first switch valve 120 is set to be in a closed state, and the second switch valve 121 is set to be in an open state; while the gas in the reinforcing air bag 40 is retained, and the air pump 11 continues to operate, inflating and pressurizing the second air chamber 161 through the opened second on-off valve 121.

The second sensor 131 measures the pulse wave signal received by the detection balloon 41 during the inflation and expansion of the detection balloon 41 and transmits the pulse wave signal to the microprocessor, and the second switch valve 121 is set to a closed state when the pulse wave signal in the detection balloon 41 detected by the second sensor 131 reaches a normal pulse wave. At this time, the first switch valve 120 and the second switch valve 121 are both in a closed state, the air pump 11 stops working, the second sensor 131 collects the pulse wave signals transmitted from the detection air bag 41 to the second air chamber 161 and transmits the pulse wave signals to the microprocessor in the housing 10, and the microprocessor determines the final measured blood pressure value according to the pulse wave signals received by the second sensor 131.

The measured blood pressure value obtained after the measurement is displayed on the display panel 3 outside the housing 10, and by this time, the blood pressure measurement is finished and the blood pressure monitoring device is reset to the initial state.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.