CN112773344B - Blood pressure measuring module - Google Patents

Abstract

A blood pressure measurement module, comprising a base, a valve piece, a top cover, a micropump, a driving circuit board and a pressure sensor, the valve piece is arranged between the base and the top cover, and the micropump is located on the base Inside, the pressure sensor is arranged on the driving circuit board, an air intake channel on the top cover is connected to an air bag with the pressure sensor, the micro pump is activated to inflate the air bag and press the user's skin, and the pressure sensor measures the pressure change in the air bag to detect the user's blood pressure.

Description

Blood Pressure Measurement Module

technical field

This case relates to a blood pressure measurement module, especially an extremely thin blood pressure measurement module for combining with wearable electronic devices or mobile devices.

Background technique

In recent years, the awareness of personal health care has gradually risen, so it is derived to hope to detect one's own physical condition on a regular basis. However, most of the instruments for detecting physical condition are fixed at present, and almost all of them go to fixed medical service stations or It is a hospital, even if there are testing instruments for home use, they are too bulky and difficult to carry. In the current society that emphasizes speed, it is difficult to meet the needs of users.

Among them, blood pressure is the one that can best reflect the physical condition. The blood vessels in each person's body are like roads all over the body. Blood pressure is like road conditions. It can understand the state of blood delivery. clear.

In view of this, how to provide a device that can accurately measure blood pressure at any time, and can be combined with wearable devices or portable electronic devices, so that users can quickly confirm the blood pressure status anytime, anywhere, is a current need to solve The problem.

Contents of the invention

The main purpose of this case is to provide a blood pressure measurement module, which can be combined with portable electronic devices or wearable electronic devices, which is convenient for users to carry and can complete blood pressure measurement regardless of time and place restrictions.

A broad implementation of this case is a blood pressure measurement module, including: a base with a valve bearing area, an accommodating groove area, an air inlet and a piercing hole, wherein the valve bearing area and the The accommodating groove areas are respectively arranged on different surfaces, and the air inlet hole and the piercing hole are connected to the accommodating groove areas, and a first recessed cavity is provided on the valve bearing area, and the first recessed cavity runs through A plurality of first through holes are provided and a first protruding structure is protrudingly provided, and a gas collection chamber is recessed in the accommodating groove area to communicate with the plurality of first through holes; a valve plate is arranged and carried on the On the valve bearing area, there is a valve hole corresponding to the position of the first protruding structure; a top cover is provided with an air inlet passage and an exhaust hole, which are separated from each other, and the top cover has a set of Matching surface, cover the valve plate, and recess an air intake chamber at the place where the assembly surface corresponds to the air intake passage, communicate with the air intake passage, and recess at the place where the assembly surface corresponds to the exhaust hole An exhaust chamber communicates with the exhaust hole, and a communication channel is provided between the intake chamber and the exhaust chamber to communicate, and a second protruding structure is protruded in the exhaust chamber, and The exhaust hole is located at the center of the second protruding structure, so that the valve plate and the second protruding structure are normally abutted to form a pre-force effect, and the exhaust hole is closed, and the air intake channel is connected with the blood pressure measurement An air bag connection; a micropump is arranged in the accommodation tank area, and covers the gas collection chamber; a drive circuit board, covers the accommodation tank area, and provides the driving signal of the micropump to control the driving operation of the micropump; and a pressure sensor, which is arranged on the driving circuit board to be electrically connected, and is corresponding to the piercing hole in the base, and is connected to the air bag through the top cover for gas pressure detection; Wherein, the micropump is controlled and driven by the driving circuit board to form a gas transmission, so that the external air of the base is introduced into the accommodating tank area through the air inlet hole, and is continuously introduced into the gas collection chamber through the micropump The chamber is concentrated, and the gas can push the valve hole of the valve plate out of contact with the first protruding structure, at this time, the gas can pass through the valve hole and continue to be introduced into the air intake channel of the top cover, and gather into the air bag In the process, the airbag is inflated and pressed against the user's skin, and the user's blood pressure is detected by the pressure sensor.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of the blood pressure measurement module of this case.

FIG. 2A is an exploded schematic diagram of the blood pressure measurement module in this case.

FIG. 2B is an exploded schematic view of the blood pressure measurement module of the present case at another angle.

FIG. 3 is a schematic diagram of the pressure sensor of the blood pressure measurement module arranged on the driving circuit board in this case.

FIG. 4 is a schematic diagram of the valve piece of the blood pressure measurement module being arranged on the base in this case.

FIG. 5 is a schematic diagram of the blood pressure measurement module connected to the airbag in this case.

FIG. 6A is an exploded schematic view of the micropump of the gas detection module of the present case.

FIG. 6B is an exploded schematic diagram of another angle of the micropump of the gas detection module of the present invention.

FIG. 7A is a schematic cross-sectional view of the micropump of the gas detection module of the present invention.

7B is a schematic cross-sectional view of another embodiment of the gas detection module of the present invention.

7C to 7E are schematic diagrams of the action of the micropump.

FIG. 8A is a schematic cross-sectional view of a MEMS pump.

Fig. 8B is an exploded schematic view of the MEMS pump.

9A to 9C are schematic diagrams of the operation of the MEMS pump.

FIG. 10 is a schematic top view of the blood pressure measurement module of this case.

FIG. 11 is a schematic cross-sectional view along line AA of FIG. 10 .

FIG. 12 is a schematic cross-sectional view of the BB section line in FIG. 10 .

FIG. 13 is a schematic cross-sectional view taken along line CC in FIG. 10 .

14A and 14B are schematic diagrams of air intake of the blood pressure measurement module of this case.

FIG. 15 is a schematic diagram of deflation of the blood pressure measurement module.

Fig. 16 is a schematic diagram of another embodiment of the blood pressure measurement module.

FIG. 17A is a schematic diagram of the top cover of another embodiment of the blood pressure measurement module.

FIG. 17B is a schematic diagram of another angle of the top cover of another embodiment of the blood pressure measurement module.

FIG. 18 is a schematic cross-sectional view of another embodiment of the blood pressure measurement module.

Fig. 19 is a schematic diagram of another embodiment of the air intake of the blood pressure measurement module.

FIG. 20 is a schematic diagram of another embodiment of the blood pressure measurement module.

Fig. 21 is a schematic diagram of connecting the blood pressure measurement module to external devices.

Explanation of reference signs

1: base

11: Valve bearing area

11a: First recessed cavity

11b: first through hole

11c: First protrusion structure

11d: Boss

11e: Second recessed cavity

11f: second through hole

12: Storage tank area

12a: Gas collection chamber

13: Air intake hole

14: piercing hole

15: First Surface

16: Second Surface

2: Valve sheet

21: valve hole

22: positioning perforation

3: Top cover

31: Intake channel

31a: Inlet chamber

32: exhaust hole

32a: Exhaust chamber

32b: Second protrusion structure

33: Assembly surface

34: Connected channel

35: positioning hole

36: shared channel

36a: Connection end

4: micro pump

41: Air intake plate

411: Vent

412: busbar groove

413: confluence chamber

42: Resonant plate

421: hollow hole

422: Movable part

423: fixed part

43: Piezoelectric Actuator

431: Hoverboard

432: Frame

433: bracket

434: Piezoelectric element

435: Void

436: Convex

44: The first insulating sheet

45: conductive sheet

46: Second insulating sheet

47: Chamber space

4a: MEMS pump

41a: first substrate

411a: Inflow hole

412a: Substrate first surface

413a: the second surface of the substrate

42a: first oxide layer

421a: Confluence channel

422a: Confluence chamber

43a: Second substrate

431a: Silicon wafer layer

4311a: Actuator

4312a: Peripheral part

4313a: connection part

4314a: Fluid Channel

432a: second oxide layer

4321a: Vibration Chamber

433a: Silicon layer

4331a: perforation

4332a: Vibration Department

4333a: fixed part

4334a: Third Surface

4335a: Fourth Surface

44a: Piezoelectric component

441a: lower electrode layer

442a: piezoelectric layer

443a: insulating layer

444a: upper electrode layer

5: Driver circuit board

6: Pressure sensor

7: Microprocessor

8: Communicator

9: External device

10: Airbag

10a: Balloon catheter

Detailed ways

Some typical embodiments embodying the features and advantages of the present application will be described in detail in the description in the following paragraphs. It should be understood that the present case can have various changes in different aspects without departing from the scope of the present case, and the descriptions and diagrams therein are used for illustration in nature rather than limiting the present case.

Please refer to Figures 1 to 2B, this case provides a blood pressure measurement module, including a base 1, a valve plate 2, a top cover 3, a micro pump 4, a driving circuit board 5 and a pressure sensor 6 . The base 1, the valve plate 2, the top cover 3, the micropump 4, the drive circuit board 5 and the pressure sensor 6 are modular structures made of tiny materials, and the modular structure has a length, a width and a height, wherein the module The length, width and height of the structures are between 1 centimeter (mm) and 999 centimeters (mm), or between 1 micrometer (μm) and 999 micrometers (μm), or between 1 nanometer (nm) and 999 Between nanometers (nm), but not limited thereto. In this embodiment, the length of the module structure is between 1 micron and 999 microns, the width is between 1 micron and 999 microns, and the volume formed by the height is between 1 micron and 999 microns, or the length of the module structure is between 1 nanometer and 999 microns. 999 nm, a width ranging from 1 nm to 999 nm, and a height ranging from 1 nm to 999 nm, but not limited thereto.

The above-mentioned base 1 includes a valve bearing area 11, an accommodating groove area 12, an air inlet 13, a penetration hole 14, a first surface 15 and a second surface 16, the first surface 15 and the second surface The surfaces 16 are two opposite surfaces, the valve bearing area 11 is located on the first surface 15, the accommodating groove area 12 is located on the second surface 16, the air inlet 13 and the through hole 14 respectively penetrate from the first surface 15 to the second surface 16 and communicates with the accommodation groove area 12, wherein the first valve bearing area 11 has a first recessed cavity 11a, a plurality of first through holes 11b, a first protruding structure 11c and a plurality of protrusions 11d, the first A recessed cavity 11a is recessed from the valve bearing area 11, and a first protruding structure 11c protrudes from the center of the first recessed cavity 11a. The plurality of first through holes 11b surround the first protruding structure 11c and penetrate to the container. In the groove area 12, the protrusions 11d are respectively adjacent to the corners of the valve bearing area 11. In addition, the accommodating groove area 12 is recessed with a gas collection chamber 12a, and the gas collection chamber 12a is connected to the plurality of first through holes. 11b is connected.

In addition, the valve bearing area 11 further includes a second recessed cavity 11e, the second recessed cavity 11e is spaced apart from the first recessed cavity 11a, and the second recessed cavity 11e passes through at least one second through hole 11f, so that the second recessed cavity 11e The two recessed chambers 11e communicate with the gas-collecting chamber 12a through the second through hole 11f, increasing the passage between the gas-collecting chamber 12a and the valve bearing area 11, so as to accelerate the gas in the gas-collecting chamber 12a to the valve bearing area 11 speed.

Please refer to Fig. 2A and Fig. 4, the valve plate 2 is arranged on the valve bearing area 11, the valve plate 2 has a valve hole 21 and a plurality of positioning perforations 22, the valve hole 21 is vertically corresponding to the first protruding structure 11c of the valve bearing area 11 , the plurality of positioning through holes 22 respectively correspond to the plurality of protrusions 11d and are sleeved on the plurality of protrusions 11d.

As shown in Figure 17A and Figure 17B, the top cover 3 has an air intake channel 31, an exhaust hole 32, a set of matching surfaces 33, a communication channel 34 and a plurality of positioning holes 35, the air intake channel 31 and the exhaust hole 32 are arranged at intervals, and the assembly surface 33 is sealed on the valve plate 2, and an air intake chamber 31a communicated with the air intake passage 31 is recessed in the assembly surface 33 on the periphery of the air intake passage 31, and is recessed on the periphery of the exhaust hole 32. The exhaust chamber 32a communicated with the exhaust hole 32, and the communication channel 34 is recessed between the intake chamber 31a and the exhaust chamber 32a, so that the intake chamber 31a communicates with the exhaust chamber 32a. In addition, a second protruding structure 32b is protruded at the edge of the exhaust chamber 32a and the exhaust hole 32; please refer to FIG. The positioning between the covers 3 is not offset. At this time, the vent hole 32 is located at the center of the second protruding structure 32b, and the second protruding structure 32b will press against the valve plate 2 and close the vent hole 32, forming a normal state. A pre-force effect.

Please refer to FIG. 2A, FIG. 2B and FIG. 11. As shown in FIG. 11, the plurality of positioning holes 35 are respectively located at the four corners of the assembly surface 33 and correspond to the plurality of protrusions 11d of the valve bearing area 11, and are used for the A plurality of protrusions 11d are nested therein.

2B and FIG. 5, the top cover 3 also includes a common channel 36, the common channel 36 communicates with the air inlet channel 31 and forms an integral body, and one end of the common channel 36 extends to the pressure sensor 6 and covers the pressure sensor 6 (as shown in FIG. 13), and the other end is the connection end 36a (as shown in Figure 10), which is used to connect the airbag 10, so that the pressure sensor 6 is connected to the airbag 10 through the common channel 36 for gas pressure detection, and further blood pressure measurement.

Please continue to refer to FIG. 2B, the micropump 4 is arranged in the storage tank area 12, and covers the gas collection chamber 12a, and the driving circuit board 5 covers the storage tank area 12, and the driving circuit board 5 is electrically connected to the micropump. 4, to provide the driving signal of the micropump 4 to control the driving and operation of the micropump 4. In addition, the pressure sensor 6 is electrically connected to the driving circuit board 5, and corresponds to the through hole 14 in the base 1. The pressure sensor One end of 6 passes through the top cover 3 and is connected with the airbag 10 (as shown in FIG. 5 ).

Please refer to Fig. 6A and Fig. 6B, micropump 4 comprises and comprises an air inlet plate 41, a resonant sheet 42, a piezoelectric actuator 43, a first insulating sheet 44, a conductive sheet 45 and a second insulating sheet 46 and other structures, wherein the piezoelectric actuator 43 is arranged corresponding to the resonant sheet 42, and the intake plate 41, the resonant sheet 42, the piezoelectric actuator 43, the first insulating sheet 44, the conductive sheet 45 and the second insulating sheet 46 and so on are stacked in sequence.

The air inlet plate 41 has at least one air hole 411 , at least one confluence row groove 412 and one confluence chamber 413 . In this embodiment, the number of air holes 411 is preferably four, but not limited thereto. The vent hole 411 runs through the intake plate 41 for gas to flow into the micropump 4 through the vent hole 411 in response to the atmospheric pressure. There is at least one busbar groove 412 on the air inlet plate 41, the number and position of which are set corresponding to the air holes 411 on the other surface of the air inlet plate 41. The number of air holes 411 in this embodiment is four, and the corresponding bus bar The number of grooves 412 is also four; the confluence chamber 413 is located at the center of the air intake plate 41, one end of the aforementioned four confluence row grooves 412 is connected to the corresponding air hole 411, and the other end is connected to the air intake plate 41 The confluence chamber 413 at the center of the gas flow chamber 413 , so that the gas entering the confluence row groove 412 from the vent hole 411 can be guided and concentrated into the confluence chamber 413 . In this embodiment, the air intake plate 41 has a vent hole 411 , a confluence row groove 412 and a confluence chamber 413 integrally formed.

In some embodiments, the material of the intake plate 41 may be made of stainless steel, but not limited thereto. In some other embodiments, the depth of the bus chamber 413 is the same as that of the bus groove 412 , but not limited thereto.

The resonant plate 42 is made of a flexible material, but not limited thereto, and has a hollow hole 421 on the resonant plate 42, which is set corresponding to the confluence chamber 413 of the inlet plate 41, for gas to pass through . In some other embodiments, the resonant piece 42 may be made of a copper material, but not limited thereto.

The piezoelectric actuator 43 is assembled together by a suspension plate 431, an outer frame 432, at least one bracket 433 and a piezoelectric element 434; the suspension plate 431 is a square shape, and can bend and vibrate, and the outer frame 432 is arranged around the suspension board 431, and at least one bracket 433 is connected between the suspension board 431 and the outer frame 432 to provide the effect of elastic support. Apply voltage to generate deformation to drive the suspension board 431 to bend and vibrate, and the side length of the piezoelectric element 434 is less than or equal to the side length of the suspension board 431; wherein, there are multiple gaps 435 between the suspension board 431, the outer frame 432 and the bracket 433 , the gap 435 for gas to pass through; in addition, the piezoelectric actuator 43 further includes a convex portion 436, the convex portion 436 is arranged on the other surface of the suspension plate 431, and is arranged on the two surfaces of the suspension plate 431 opposite to the piezoelectric element 434 .

As shown in Figure 7A, the intake plate 41, the resonant sheet 42, the piezoelectric actuator 43, the first insulating sheet 44, the conductive sheet 45, and the second insulating sheet 46 are stacked in sequence, and the piezoelectric actuator 43 The thickness of the suspension plate 431 is smaller than the thickness of the outer frame 432. When the resonant plate 42 is stacked on the piezoelectric actuator 43, a cavity can be formed between the suspension plate 431 of the piezoelectric actuator 43, the outer frame 432 and the resonant plate 42. Chamber space 47.

Please refer to FIG. 7B again. FIG. 7B is another embodiment of the micropump 4. Its components are the same as those in the previous embodiment (FIG. 6A), so they will not be described in detail. The suspension plate 431 of the actuator 43 extends away from the resonant plate 42 by stamping, and is not at the same level as the outer frame 432. The extension distance can be adjusted by the bracket 433, and the bracket 433 and the suspension plate 431 are non-parallel. , so that the piezoelectric actuator 43 is convex.

In order to understand the output actuation mode of the above-mentioned micropump 4 to provide gas transmission, please continue to refer to FIG. 7C to FIG. 7E , please refer to FIG. 7C first, the piezoelectric element 434 of the piezoelectric actuator 43 is deformed after being applied with a driving voltage The suspension plate 431 is driven to move upwards. At this time, the volume of the chamber space 47 is increased, and a negative pressure is formed in the chamber space 47, and the gas in the confluence chamber 413 is drawn into the chamber space 47, and the resonant plate 42 is resonated at the same time. The effect of the principle is driven upward synchronously, which increases the volume of the confluence chamber 413, and because the gas in the confluence chamber 413 enters the chamber space 47, the confluence chamber 413 is also in a negative pressure state, and then through the The gas hole 411 and the confluence row groove 412 are used to absorb gas into the confluence chamber 413 . Please refer to Fig. 7D again, the piezoelectric element 434 drives the suspension plate 431 to move downward, compressing the chamber space 47, similarly, the resonant plate 42 is displaced downward by the suspension plate 431 due to resonance, and simultaneously pushes the liquid in the chamber space 47 The gas is transported upward through the gap 435 downwards, and the gas is discharged by the micropump 4 . Finally, please refer to FIG. 7E. When the suspension plate 431 returns to its original position, the resonant plate 42 is still displaced downward due to inertia. At this time, the resonant plate 42 will move the gas in the compressed chamber space 47 to the gap 435, and enhance the confluence. The volume in the chamber 413 allows the gas to be continuously collected in the confluence chamber 413 through the vent hole 411 and the confluence row groove 412, and the gas transmission action is provided by continuously repeating the above-mentioned micropump shown in FIG. 7C to FIG. 7E The first step is to enable the micropump to make the gas continuously enter the flow channel formed by the air intake plate 41 and the resonance plate 42 from the vent hole 411 to generate a pressure gradient, and then transport the gas upward through the gap 435 to make the gas flow at a high speed, so as to achieve the effect of the gas transmission by the micropump 4 .

Another embodiment of the micropump 4 of this case can be a microelectromechanical pump 4a, please refer to Figure 8A and Figure 8B, the microelectromechanical pump 4a includes a first substrate 41a, a first oxide layer 42a, a second substrate 43a and A piezoelectric element 44a. The microelectromechanical pump 4a of this embodiment is integrally formed through epitaxy, deposition, lithography, and etching processes in the semiconductor manufacturing process. It should not be disassembled. In order to describe its internal structure in detail, the decomposition shown in FIG. 8B is used. Figure detailed.

The first substrate 41a is a silicon wafer (Si wafer), and its thickness is between 150 to 400 microns (μm). The first substrate 41a has a plurality of inflow holes 411a, a substrate first surface 412a, and finally a substrate second surface. 413a, in this embodiment, the number of the plurality of inflow holes 411a is four, but not limited thereto, and each inflow hole 411a penetrates from the second surface 413a of the substrate to the first surface 412a of the substrate, and flows into In order to improve the inflow effect of the hole 411a, the inflow hole 411a presents a tapered shape from the second surface 413a to the first surface 412a.

The first oxide layer 42a is a silicon dioxide (SiO2) film with a thickness between 10 and 20 microns (μm). The first oxide layer 42a is stacked on the first surface 412a of the first substrate 41a. An oxide layer 42a has a plurality of confluence channels 421a and a confluence chamber 422a, and the number and positions of the confluence channels 421a and the inflow holes 411a of the first substrate 41a correspond to each other. In this embodiment, the number of confluence channels 421a is also four, and one ends of the four confluence channels 421a are respectively connected to the four inflow holes 411a of the first substrate 41a, while the other ends of the four confluence channels 421a are connected to the confluence channels 421a. The chamber 422a allows the gases to enter through the inflow holes 411a respectively, pass through the corresponding confluence channels 421a connected thereto, and then converge into the confluence chamber 422a.

The second substrate 43a is a silicon-on-insulator silicon wafer (SOI wafer), comprising: a silicon wafer layer 431a, a second oxide layer 432a and a silicon material layer 433a; the thickness of the silicon wafer layer 431a is between 10 Between 20 micrometers (μm), there is an actuating part 4311a, an outer peripheral part 4312a, a plurality of connecting parts 4313a and a plurality of fluid channels 4314a, the actuating part 4311a is circular; the outer peripheral part 4312a is a hollow ring, surrounding the The periphery of the actuating part 4311a; the plurality of connecting parts 4313a are respectively located between the actuating part 4311a and the outer peripheral part 4312a, and connect the two to provide the function of elastic support. The plurality of fluid passages 4314a are formed around the periphery of the actuating portion 2311a, and are respectively located between the plurality of connecting portions 4313a

The second oxide layer 432a is a silicon oxide layer with a thickness between 0.5 and 2 micrometers (μm), formed on the silicon wafer layer 431a in a hollow ring shape, and defines a vibration chamber 4321a with the silicon wafer layer 431a. The silicon material layer 433a is circular, located on the second oxide layer 432a and bonded to the first oxide layer 42a, the silicon material layer 433a is a silicon dioxide (SiO2) film with a thickness between 2 and 5 microns (μm), having A through hole 4331a, a vibration part 4332a, a fixed part 4333a, a third surface 4334a and a fourth surface 4335a. The through hole 4331a is formed in the center of the silicon material layer 433a, the vibration part 4332a is located in the peripheral area of the through hole 4331a, and is vertically corresponding to the vibration chamber 4321a, and the fixed part 4333a is the peripheral area of the silicon material layer 433a, and is fixed to the second part by the fixed part 4333a. The oxide layer 432a, the third surface 4334a is bonded to the second oxide layer 432a, and the fourth surface 4335a is bonded to the first oxide layer 42a; the piezoelectric element 44a is stacked on the actuation portion 4311a of the silicon wafer layer 431a.

The piezoelectric component 44a is circular and includes a lower electrode layer 441a, a piezoelectric layer 442a, an insulating layer 443a, and an upper electrode layer 444a. The lower electrode layer 441a is stacked on the actuator portion 4311a of the silicon wafer layer 431a, and the piezoelectric layer 442a is stacked on the lower electrode layer 441a, and the two are electrically connected through the contact area. In addition, the width of the piezoelectric layer 442a is smaller than that of the lower electrode layer 441a, so that the piezoelectric layer 442a cannot completely cover the lower electrode layer 441a. The insulating layer 443a is stacked on the partial area of the piezoelectric layer 442a and the area of the lower electrode layer 441a not covered by the piezoelectric layer 442a, and finally on the insulating layer 443a and the area of the piezoelectric layer 442a not covered by the insulating layer 443a Overlapping the upper electrode layer 444a, so that the upper electrode layer 444a can be in contact with the piezoelectric layer 442a for electrical connection, while using the insulating layer 443a to block between the upper electrode layer 444a and the lower electrode layer 441a to avoid direct contact between the two to cause a short circuit .

Please refer to FIG. 9A to FIG. 9C . FIG. 9A to FIG. 9C are schematic diagrams of the operation of the MEMS pump 4 a. Please refer to FIG. 9A first. After the lower electrode layer 441a and the upper electrode layer 444a of the piezoelectric component 44a receive the driving voltage and driving signal (not shown) transmitted by the driving circuit board 5, they are conducted to the piezoelectric layer 442a, After the piezoelectric layer 442a receives the driving voltage and driving signal, it begins to deform due to the influence of the inverse piezoelectric effect, which will drive the actuator part 4311a of the silicon wafer layer 431a to start to displace. When the piezoelectric component 44a drives the actuator part 4311a to move upward At this time, the volume of the vibration chamber 4321a of the second oxide layer 432a will increase, so that a negative pressure will be formed in the vibration chamber 4321a, which is used for converging the flow of the first oxide layer 42a The gas in the chamber 422a is sucked into it through the perforation 4331a. Please continue to refer to FIG. 9B. When the actuator part 4311a is pulled upward by the piezoelectric component 44a and moves upward, the vibrating part 4332a of the silicon material layer 433a will move upward due to the influence of the resonance principle. When the vibrating part 4332a moves upward, it will compress the vibration The space of the chamber 4321a also pushes the gas in the vibration chamber 4321a to move to the fluid channel 4314a of the silicon wafer layer 431a, so that the gas can be discharged upward through the fluid channel 4314a. When the vibration part 4332a moves upward to compress the vibration chamber 4321a, The volume of the confluence chamber 422a is increased due to the displacement of the vibrating part 4332a, and a negative pressure is formed inside it, and the gas sucked from the microelectromechanical pump 4a enters it through the inflow hole 411a. Finally, as shown in FIG. 9C, when the piezoelectric component 44a drives the actuator part 4311a of the silicon wafer layer 431a to move downward, the gas in the vibration chamber 4321a is pushed toward the fluid channel 4314a, and the gas is discharged, while the silicon material layer 433a The vibrating part 4332a is also driven by the actuating part 4311a to move downward, and the gas compressed in the confluence chamber 422a moves to the vibrating chamber 4321a through the perforation 4331a, and when the piezoelectric component 44a drives the actuating part 4311a to move upward, its The volume of the vibration chamber 4321a will be greatly increased, and then there will be a higher suction force to suck the gas into the vibration chamber 4321a, and then repeat the above actions, so that the piezoelectric component 44a will continuously drive the actuating part 4311a to move up and down and move in unison The vibrating part 4332a moves up and down, and by changing the internal pressure of the microelectromechanical pump 4a, it continuously absorbs and discharges gas, thereby completing the action of the microelectromechanical pump 4a.

Please refer to Figure 14A, the micropump 4 starts to operate, the gas enters from the vent hole 411 of the micropump 4, and the gas is continuously delivered to the gas collection chamber 12a, please refer to Figure 14B, the gas is continuously delivered to the gas collection chamber After the chamber 12a, the gas enters the first recessed cavity 11a through the first through hole 11b, and enters the second recessed cavity 11e through the second through hole 11f at the same time, and enters the first recessed cavity 11a and the second recessed cavity The gas in 11e will push the valve plate 2 upwards and make it approach the top cover 3. At this time, the valve plate 2 will press against the second protruding structure 32b of the exhaust chamber 32a, and at the same time close the exhaust hole 32 At the same time, the valve plate 2 is separated from the first protruding structure 11c of the first recessed cavity 11a, so that the gas in the second recessed cavity 11e and the first recessed cavity 11a can enter the intake chamber 31a through the valve hole 21, and the gas After entering the air intake chamber 31a, it is introduced into the air intake channel 31 and finally converges into the airbag 10 (as shown in FIG. 5 ). In this embodiment, after the gas enters the air intake passage 31, it first passes through the common passage 36, and then enters the airbag 10 located at the connection end 36a, and starts to inflate the airbag 10 to make it expand, so that the airbag 10 can be close to the measurer, and then The pressure change of the airbag 10 is detected by the pressure sensor 6 to perform blood pressure measurement.

As shown in Figure 15, after the blood pressure measurement is completed, the micropump 4 stops operating, so the air pressure in the airbag 10 is higher than the air pressure in the intake chamber 31a, and the gas starts to be guided from the airbag 10 to the intake chamber through the intake passage 31 31a, when the gas is transported to the intake chamber 31a, the valve plate 2 is pushed down, and the valve hole 21 is closed by the first protruding structure 11c, and the gas will pass through the communication channel 34, from the intake chamber 31a to the exhaust The gas chamber 32a flows, and in addition, when the gas pushes the valve plate 2 downward, the valve plate 2 breaks away from the second protruding structure 32b, and is pushed close to and falls into the second recessed cavity 11e, and the exhaust chamber 32a is connected to the second concave cavity 11e. The exhaust hole 32 is connected, and after the gas enters the exhaust chamber 32a, it can be discharged through the exhaust hole 32 to release the gas in the airbag 10, so as to complete the rapid pressure relief operation of the airbag 10.

Please refer to Fig. 16. Fig. 16 is another embodiment of the blood pressure measurement module of this case. Most of the components of this embodiment are the same as those of the previous embodiment, so no more details are given. The difference lies in the top cover 3, the top cover of this embodiment 3 No common channel 36 is provided; then please refer to FIG. 18 , when no common channel 36 is provided, the air bag 10 of this embodiment has an air bag duct 10a, and the air bag duct 10a communicates with the air bag 10 and is connected to the top The air intake channel 31 of the cover 3 and the cover pressure sensor 6, the micropump 4 starts to act, and the gas enters the air intake channel 31 (as shown in Figure 19). The airbag 10 starts to inflate and inflate the airbag 10, presses the user's skin, and confirms the air pressure change in the airbag 10 by the airbag catheter 10a through the pressure sensor 6 to detect the user's blood pressure. After the detection is completed, the micropump 4 stops operating , the gas will be guided back to the air intake passage 31 by the airbag catheter 10a, and finally discharged through the exhaust hole 32 (as shown in FIG. 20 ), so as to achieve the effect of rapid deflation and pressure relief.

Finally, please refer to Figure 1. The preferred length of the blood pressure measurement module in this case is between 4mm and 30mm, the preferred width is between 2mm and 16mm, and the preferred height is between 1mm and 8mm, so that The blood pressure measurement module can be combined with the portable electronic device. In addition, in order to combine the blood pressure measurement module with a smart watch, the preferred length can be between 24mm and 30mm, the preferred width can be between 14mm and 16mm, and the preferred thickness can be between 6mm and 8mm between.

As shown in Figure 21, the blood pressure measurement module can further include a microprocessor 7 and a communicator 8, which are arranged on the drive circuit board 5, and the microprocessor 7 is used to receive the signal measured by the pressure sensor 6 for The calculation is converted into an information data, and the information data is transmitted to an external device 9 through the communicator for storage, processing and application, wherein the communication transmission is at least one of a wired transmission and a wireless transmission, and the external device is a At least one of a cloud system, a portable device, and a computer system.

In summary, the blood pressure measurement module seat provided in this case can achieve the effect of rapid exhaust and rapid intake of the airbag through the setting of the base, valve plate and top cover, and the volume of the pump can be greatly reduced by the micro pump. The blood pressure measurement module can be set on wearable devices such as smart watches, which is very industrially applicable and progressive.

Claims (18)

1. A blood pressure measurement module, comprising:

the base is provided with a valve bearing area, a containing groove area, an air inlet hole and a penetrating hole, wherein the valve bearing area and the containing groove area are respectively arranged on different surfaces, the air inlet hole and the penetrating hole are communicated with the containing groove area, a first concave cavity is arranged on the valve bearing area, a plurality of first through holes are arranged in the first concave cavity in a penetrating manner, a first protruding structure is arranged in the first concave cavity in a protruding manner, and an air collecting cavity is concavely arranged in the containing groove area and is communicated with the plurality of first through holes;

the valve piece is arranged and carried on the valve carrying area, is provided with a valve hole and corresponds to the position of the first protruding structure;

the top cover is provided with a set of assembling surfaces, covers the valve sheet, is correspondingly concave at the air inlet channel and communicated with the air inlet channel, is correspondingly concave at the air outlet channel and communicated with the air outlet channel, is provided with a communication channel, is internally provided with a second protruding structure in a protruding way, is positioned at the center of the second protruding structure, promotes the valve sheet and the second protruding structure to normally prop against to form a pre-stress effect, and seals the air outlet, and is connected with an air bag for measuring blood pressure;

the micropump is arranged in the accommodating groove area and covers the gas collecting cavity;

a driving circuit board covering the containing groove area for providing driving signals of the micropump to control the driving operation of the micropump; and

the pressure sensor is arranged on the driving circuit board and is electrically connected with the airbag through the top cover, and correspondingly penetrates through the penetrating hole of the base;

the base, the valve plate, the top cover, the micro pump, the driving circuit board and the pressure sensor are made into a module structure, and the module structure has a length, a width and a height, wherein the micro pump is controlled and driven by the driving circuit board to operate to form gas transmission, so that the external gas of the base is led into the accommodating groove area through the air inlet hole and is continuously led into the gas collecting cavity through the micro pump to be concentrated, and the gas can push the valve hole of the valve plate to be separated from the first protruding structure and is continuously led into the air inlet channel of the top cover through the valve hole, and is concentrated into the air bag, so that the air bag is inflated and expanded to press the skin of a user, and the pressure sensor is used for detecting the blood pressure of the user.

2. The blood pressure measuring module of claim 1, wherein the valve supporting area of the base further comprises a plurality of protrusions, and the valve plate is provided with a positioning hole corresponding to the plurality of protrusions for being correspondingly sleeved on the protrusions of the valve supporting area, so that the valve plate is supported on the valve supporting area without deviation in positioning, and the valve hole is ensured to correspond to the position of the first protruding structure.

3. The blood pressure measuring module of claim 2, wherein the assembling surface of the top cover is further provided with a positioning hole corresponding to each of the plurality of convex columns for being correspondingly sleeved on the convex column of the valve bearing area, so that the valve sheet is borne on the valve bearing area and clamped between the base and the top cover without deviation in positioning.

4. The blood pressure measuring module of claim 1, wherein the valve-bearing area of the base further comprises a second concave cavity, and at least one second through hole is formed in the second concave cavity for communicating with the air-collecting chamber so as to accelerate the introduction of the air-collecting chamber into the air bag through the valve hole and then continuously into the air inlet channel of the top cover.

5. The blood pressure measuring module as set forth in claim 4, wherein when the micropump is stopped, the gas pressure of the gas collected in the air bag is greater than the gas pressure collected in the gas collecting chamber, the gas collected in the air bag is guided out from the gas inlet channel and pushes the valve hole of the valve plate to keep abutting against the first protrusion structure, the valve hole is closed, and the gas is introduced into the gas outlet chamber through the communication channel, and simultaneously the introduced gas pushes the valve plate to separate from abutting against the second protrusion structure, the gas outlet hole is opened, and the gas collected in the air bag is pushed to be discharged out of the top cover from the gas outlet hole, so that the rapid pressure relief operation of the air bag is completed.

6. The blood pressure measuring module of claim 5, wherein the valve plate is pushed to be close to falling into the second concave cavity when the rapid pressure release operation of the air bag is performed, so that the distance between the valve plate and the second convex structure is increased after the valve plate is separated from the second concave cavity, and the vent hole is opened.

7. The blood pressure measurement module of claim 1, wherein the top cover is provided with a common channel for communicating with the air inlet channel to form a whole, the common channel extends to cover the pressure sensor, and the common channel is provided with a connecting end for connecting with the air bag so as to enable the pressure sensor to communicate with the air bag through the common channel for gas pressure detection.

8. The blood pressure measuring module of claim 1, further comprising a microprocessor and a communicator disposed on the driving circuit board, wherein the microprocessor is configured to receive the signal measured by the pressure sensor, to calculate and convert the signal into information data, and to communicate the information data to an external device for storage, processing and application.

9. The blood pressure measurement module of claim 8, wherein the communication transmission is at least one of a wired transmission and a wireless transmission.

10. The blood pressure measurement module of claim 8, wherein the external device is at least one of a cloud system, a portable device, a computer system, and the like.

11. The blood pressure measurement module of claim 1, wherein the micropump comprises:

an air inlet plate, which is provided with at least one vent hole, at least one bus duct corresponding to the vent hole and a bus chamber, wherein the vent hole is used for introducing gas, and the bus duct is used for guiding the gas introduced from the vent hole to the bus chamber;

a resonance plate having a hollow hole corresponding to the position of the converging chamber and surrounding a movable part; and

a piezoelectric actuator corresponding to the resonance plate in position;

the air inlet plate, the resonance plate and the piezoelectric actuator are sequentially stacked, and a chamber space is formed between the resonance plate and the piezoelectric actuator, so that when the piezoelectric actuator is driven, air is led in through the air vent of the air inlet plate and is converged into the converging chamber through the converging channel, and then the air is passed through the hollow hole of the resonance plate, so that the piezoelectric actuator and the movable part of the resonance plate generate resonance to transmit the air.

12. The blood pressure measurement module of claim 11, wherein the piezoelectric actuator comprises:

a suspension plate having a square shape and being capable of bending and vibrating;

an outer frame surrounding the outer side of the suspension plate;

at least one bracket connected between the suspension plate and the outer frame for elastic support; and

the piezoelectric element is provided with a side length which is smaller than or equal to the side length of the suspension plate, and is attached to one surface of the suspension plate and used for receiving voltage to drive the suspension plate to bend and vibrate.

13. The blood pressure measurement module of claim 11, wherein the piezoelectric actuator comprises:

a suspension plate having a square shape and being capable of bending and vibrating;

an outer frame surrounding the outer side of the suspension plate;

at least one bracket connected between the suspension plate and the outer frame to elastically support the suspension plate, and to form a non-coplanar structure between one surface of the suspension plate and one surface of the outer frame, and to maintain a chamber space between one surface of the suspension plate and the resonance plate; and

the piezoelectric element is provided with a side length which is smaller than or equal to the side length of a suspension plate of the suspension plate, and is attached to one surface of the suspension plate and used for applying voltage to drive the suspension plate to vibrate in a bending way.

14. The blood pressure measurement module of claim 11, wherein the micro-pump further comprises a first insulating sheet, a conductive sheet, and a second insulating sheet, wherein the air intake plate, the resonance sheet, the piezoelectric actuator, the first insulating sheet, the conductive sheet, and the second insulating sheet are stacked in order.

15. The blood pressure measurement module of claim 1, wherein the micro pump is a microelectromechanical pump comprising:

a first substrate having a plurality of inflow holes, the plurality of inflow holes being tapered;

the first oxide layer is overlapped with the first substrate and is provided with a plurality of converging channels and a converging chamber, and the converging channels are communicated between the converging chamber and the inflow holes;

a second substrate bonded to the first substrate, comprising:

a silicon wafer layer having:

an actuating part which is round;

an outer peripheral part, which is hollow ring-shaped and surrounds the periphery of the actuating part;

a plurality of connecting parts respectively connected between the actuating part and the outer peripheral part; and

a plurality of fluid channels surrounding the periphery of the actuating part and respectively positioned among the plurality of connecting parts;

a second oxide layer formed on the silicon wafer layer, having a hollow ring shape, and defining a vibration chamber with the silicon wafer layer; and

a silicon material layer with a round shape, which is positioned on the second oxide layer and combined with the first oxide layer, and comprises:

a through hole formed in the center of the silicon layer;

a vibration part located in the peripheral area of the perforation;

a fixing part located at the peripheral area of the silicon material layer; and

and the piezoelectric component is round and is overlapped with the actuating part of the silicon wafer layer.

16. The blood pressure measurement module of claim 15, wherein the piezoelectric assembly comprises:

a lower electrode layer;

a piezoelectric layer stacked on the lower electrode layer;

an insulating layer laid on part of the surface of the piezoelectric layer and part of the surface of the lower electrode layer; and

and the upper electrode layer is overlapped on the insulating layer and the rest surfaces of the piezoelectric layer, which are not provided with the insulating layer, and is used for being electrically connected with the piezoelectric layer.

17. The blood pressure measurement module of claim 1, wherein the length is between 4mm and 30mm, the width is between 2mm and 16mm, and the height is between 1mm and 8 mm.

18. The blood pressure measurement module of claim 17, wherein the length is between 24mm and 30mm, the width is between 14mm and 16mm, and the height is between 6mm and 8 mm.