Upper arm type electronic blood pressure instrument with balance degree and binding force detection function

Abstract

An upper arm type electronic blood pressure instrument with a balance degree and binding force detection function comprises an upper arm type electronic blood pressure instrument body, a time control module, a pressure resistor, a horizontal detection circuit and a binding force detection circuit. The pressure resistor is installed at the inner side end of the arm band, and the time control module, the horizontal detection circuit and the binding force detection circuit are installed in the upper arm type electronic blood pressure instrument body. Two terminals of the pressure resistor are electrically connected in series between two signal input ends of the first binding force detection circuit and the second binding force detection circuit; the power output end of the time control module is electrically connected with the power input ends of the horizontal detection circuit and the binding force detection circuit, and the other end of the start detection button is electrically connected with the signal input end of the time control module. The device can detect the levelness and the binding force of the arm band, prompt signals can be generated in time when the levelness of the front, the rear, the left and the right deviates and the binding force of the arm band is too large or too small, a user can adjust the device in a targeted mode, and the accuracy of blood pressure data detection is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of blood pressure meter equipment, in particular to an upper arm electronic blood pressure meter with the functions of detecting balance and binding force. Background Art

[0002] Upper-arm and wrist-mounted electronic blood pressure monitors are easy to use and offer higher accuracy than wrist-mounted monitors, making them widely used. To use an upper-arm electronic blood pressure monitor, the user straps on the armband and presses the start test button (one end of which is connected to the positive power supply and the other to the control system's signal input). This activates the positive power supply from the monitor's internal battery (or external DC power supply) into the control system's signal input. A high-level trigger signal activates the internal pump, injecting air into the armband. Subsequently, the other components of the control system work together to determine the user's blood pressure readings.

[0003] With the advancement of upper arm electronic blood pressure monitor technology, the functions of existing upper arm electronic blood pressure monitors are becoming more and more perfect. The authorized patent of my country with patent number "201721411019.0" and patent name "An upper arm electronic blood pressure monitor" records that "the gas transmission element in the utility model is connected to the armband through a four-way piece and a three-way piece in sequence, effectively ensuring that the gas transmission pipeline is unobstructed, so that the armband has better pressurization performance." As can be seen from the above, although the comparative patent has achieved the technical effect of the invention described in it, it still has the following technical shortcomings due to structural and functional limitations. (1): It does not have a horizontal detection function. Since the upper arm electronic blood pressure monitor is more sensitive to the horizontality of the placement during detection, when the user does not place the shell of the upper arm electronic blood pressure monitor horizontally, the accuracy of the detected blood pressure data cannot be guaranteed (for example, the table surface where the upper arm electronic blood pressure monitor is placed is not flat enough, or there are other items such as paper under one of the lower ends of the upper arm electronic blood pressure monitor, resulting in insufficient flatness). (2): It does not have the function of detecting the binding force of the arm cuff. Especially when the user is inexperienced, if the arm cuff is too loose or too tight, the blood pressure data will be deviated upward or downward. Similarly, the accuracy of the blood pressure data cannot be guaranteed. Utility Model Content

[0004] In order to overcome the drawbacks of existing upper-arm electronic blood pressure monitors due to structural limitations as described in the background technology, the present invention provides an upper-arm electronic blood pressure monitor body. When in use, after the user ties the armband and presses the detection button, the horizontality of the upper-arm electronic blood pressure monitor body and the binding force of the armband can be automatically detected. When the horizontality of the upper-arm electronic blood pressure monitor body deviates, or the binding force of the armband is too large or too small, a prompt signal can be generated in time, and the user can make targeted adjustments, thereby ensuring the accuracy of the detected blood pressure data as much as possible. An upper-arm electronic blood pressure monitor with the function of detecting balance and binding force.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An upper-arm electronic blood pressure monitor with the function of detecting balance and binding force, comprising an upper-arm electronic blood pressure monitor body, a timing control module, and a pressure resistor, characterized in that it also has a level detection circuit and a binding force detection circuit; the pressure resistor is installed at the inner end of the arm band of the upper-arm electronic blood pressure monitor body, the level detection circuit has multiple channels, and the binding force detection circuit has at least two channels; the timing control module, the level detection circuit, and the binding force detection circuit are installed in the upper-arm electronic blood pressure monitor body; the two connection terminals of the pressure resistor are electrically connected in series between the two signal input terminals of the first binding force detection circuit and the second binding force detection circuit; the power output terminal of the timing control module is electrically connected to the power input terminals of the multiple level detection circuits and the two binding force detection circuits, and the other end of the start detection button of the upper-arm electronic blood pressure monitor body is electrically connected to the signal input terminal of the timing control module.

[0007] Furthermore, the height of the pressure resistor is higher than the height of the inner end of the armband.

[0008] Furthermore, each level detection circuit includes an electrically connected mercury switch and a resistor, and a light-emitting diode. The mercury switches of the multiple level detection circuits are vertically distributed and installed around the lower end of the shell of the upper arm electronic blood pressure monitor body. In each level detection circuit, one end of the mercury switch is connected to one end of the resistor, and the other end of the resistor is connected to the positive electrode of the light-emitting diode.

[0009] Furthermore, the mercury switch is a one-way mercury switch.

[0010] Furthermore, the pressure resistor is equipped with a resistor, one end of the pressure resistor is connected to one end of the resistor, and the other end of the pressure resistor is electrically connected to the power output end of the time control module.

[0011] Furthermore, the first binding force detection circuit includes an electrically connected adjustable resistor and a resistor, a transistor, and an indicator light, one end of the adjustable resistor is connected to one end of the first resistor and the base of the transistor, the collector of the transistor is connected to one end of the second resistor, the other end of the second resistor is connected to the negative power input end of the indicator light, and the other end of the first resistor is connected to the emitter of the transistor.

[0012] Furthermore, the second binding force detection circuit includes an electrically connected adjustable resistor and a resistor, a transistor, and an indicator light, one end of the adjustable resistor is connected to one end of the first resistor and the base of the transistor, the collector of the first transistor is connected to the base of the second transistor and one end of the second resistor, the collector of the second transistor is connected to one end of the third resistor, the other end of the third resistor is connected to the negative power input end of the indicator light, the positive power input end of the indicator light is connected to the other end of the second resistor, and the other end of the first resistor is connected to the emitters of the two transistors.

[0013] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention is based on the upper arm electronic blood pressure monitor body. When in use, after the user ties the armband and presses the detection button, within a period of time, the horizontal detection circuit, the binding force detection circuit and the pressure resistor can automatically detect the horizontality of the shell of the upper arm electronic blood pressure monitor body and the binding force of the armband. When there is a deviation in the front, back, left and right horizontality of the upper arm electronic blood pressure monitor body, or when the binding force of the armband is too large or too small, a prompt signal can be generated in time, and the user can make targeted adjustments, thereby ensuring the accuracy of the detected blood pressure data as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure and local enlarged structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the local structure of the utility model.

[0017] Figure 3 This is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0018] Figure 1 、 2As shown in Figure 3, an upper-arm electronic blood pressure monitor with the function of detecting balance and binding force includes an upper-arm electronic blood pressure monitor body 1, a time control module W, a pressure resistor T, and also has a level detection circuit 2 and a binding force detection circuit 3; the pressure resistor T is sewn into a small cloth bag 4, and the small cloth bag 4 is sewn to the middle of the inner end of the upper-arm electronic blood pressure monitor body armband 101, the level detection circuit 2 has four circuits, and the binding force detection circuit 3 has two circuits; the time control module W, the level detection circuit 2, and the binding force detection circuit 3 are installed on the circuit board inside the shell of the upper-arm electronic blood pressure monitor body 1.

[0019] Figure 1 、 2As shown in Figures 3 and 4, the height of the pressure resistor T is slightly higher than the height of the inner end of the armband 101. A section of the wire connected to the pressure resistor T is sewn into a small cloth bag 5. The horizontal line of the small cloth bag 5 is sewn between the middle and left ends of the inner end of the armband. The other end of the wire is bonded to the outside of the trachea 102 of the upper-arm electronic blood pressure monitor body and enters the interior of the upper-arm electronic blood pressure monitor body 1. Each level detection circuit includes a mercury switch Q1, a resistor R5, and a light-emitting diode VL connected via circuit board wiring. The mercury switches Q1 of the four level detection circuits are vertically distributed and individually mounted in the middle of the lower periphery of the housing of the upper-arm electronic blood pressure monitor body 1. In each level detection circuit, one end of the mercury switch Q1 is connected to one end of the resistor R5, and the other end of the resistor R5 is connected to the positive electrode of the light-emitting diode VL. Mercury switch Q1 is a one-way mercury switch with a glass housing. In the four-way level detection circuit, when the housing is tilted to the left or right, forward, or backward at a certain angle (1 degree), the mercury level in the lower portion of the housing submerges the two upper contacts. Pressure resistor T is paired with resistor R1. One end of pressure resistor T (the other end connected to the negative terminal of battery G) is connected to one end of resistor R1. The other end of pressure resistor T is connected to pin 5 of the power output of time control module W via a wire. The first binding force detection circuit includes an adjustable resistor RP1, resistors R2 and R6, transistor VT1, and indicator light H1, all connected via circuit board wiring. One end of adjustable resistor RP1 is connected to one end of the first resistor R2 and the base of transistor VT1. The collector of transistor VT1 is connected to one end of the second resistor R6. The other end of second resistor R6 is connected to the negative power input of indicator light H1. The other end of resistor R2 is connected to the emitter of transistor VT1. The second binding force detection circuit includes an adjustable resistor RP2, resistors R3, R4, R7, transistors VT2 and VT3, and an indicator light H2 connected via circuit board wiring. One end of the adjustable resistor RP2 is connected to one end of the first resistor R3 and the base of the first transistor VT2. The collector of the first transistor VT2 is connected to the base of the second transistor VT3 and one end of the second resistor R4. The collector of the second transistor VT3 is connected to one end of the third resistor R7. The other end of the third resistor R7 is connected to the negative power input end of the indicator light H2, the positive power input end of the indicator light H2 and the other end of the second resistor R4. The other end of the first resistor R3 is connected to the emitters of the two transistors VT2 and VT3.

[0020] Figure 1 、 2As shown in Figures 3 and 4, the battery G inside the upper-arm electronic blood pressure monitor is connected to the power input pins 1 and 2 of the time control module W via wires (the negative power input pin 2 and the negative signal input pin 4 of the time control module W are also connected via wires). The two terminals of the pressure resistor T are connected in series via wires between the other ends of the adjustable resistors RP1 and RP2, which are the two signal inputs of the first and second binding force detection circuits, and pin 5 of the time control module W. The power output pins 5 and 2 of the time control module W are connected to the other end of the mercury switch Q1, which is the power input of the four-way level detection circuit, the negative electrode of the light-emitting diode VL, the positive power input of the resistor indicator lights H1 and H2, which are the power input of the binding force detection circuit, and the other ends of the resistors R2 and R3, respectively, via wires. The other end of the start detection button S1 on the upper-arm electronic blood pressure monitor is connected to the positive signal input pin 3 of the time control module W via wires. The light-emitting surfaces of the four light-emitting diodes and the two indicator lights are located outside the multiple openings at the upper end of the housing. Figure 2 、 3 In the figure, transistors VT1, VT2, and VT3 are NPN transistors of model 9013; light-emitting diode VL and indicator lights H1 and H2 are red light-emitting diodes; the resistance values ​​of resistors R1, R2, R3, R4, R5, R6, and R7 are 10K, 4.7K, 4.7K, 100K, 1.8K, 1.8K, and 1.8K, respectively; the resistance values ​​of adjustable resistors RP1 and RP2 are 470K (adjusted to 9.6K and 10K, respectively, in this embodiment. The higher the resistance values ​​of adjustable resistors RP1 and RP2 are adjusted by technicians, the higher the divided voltage is, and the smaller the contact force of subsequent pressure resistor T is, the transistors VT1 and VT2 will be turned on, that is, the contact force is set relatively small, and the adjustable resistors are adjusted to 9.6K and 10K, respectively. The lower the resistance values ​​of RP1 and RP2 are adjusted, the lower the divided voltage is. Only when the contact force of the subsequent pressure resistor T is relatively greater will transistors VT1 and VT2 be turned on, that is, the contact force is set to be relatively large); the pressure resistor T is a resistance pressure sensor strain gauge of model BA350-3EB; the time control module W is a finished time relay module based on the NE555 chip of model JK-DE, which has two power input terminals, two power output terminals (one normally open and one normally closed contact terminal, the normally closed contact terminal of this new model is left floating), two control signal input terminals, and three setting buttons. The three buttons can be used to set the time when the normally open power output terminal outputs power after the power control signal is input from the two control signal input terminals.

[0021] Figure 1 、 2As shown in Figures 3 and 4, this new device is based on the upper arm electronic blood pressure monitor body 1. When in use, after the user has tied the armband 101, he presses the start detection button S1 (one end of which is connected to the positive pole of the power supply G and the other end is connected to the signal input end of the control system W1). Then, the positive power supply of the battery G (or external DC power supply) inside the upper arm electronic blood pressure monitor enters the signal input end of its control system W1. When the control system W1 inputs a high-level trigger signal, it controls the internal air pump to work and add some gas to the armband 101. Subsequently, under the joint action of other supporting components of the control system, the user's blood pressure data is obtained. The above is an existing mature technology and will not be elaborated in this application. In this new device, each time the user presses the start detection button S1, the 3rd pin of the time control module W inputs the positive trigger signal, and under the action of its internal circuit, its 5th pin will output power for 5 seconds at an interval of 1 second to the power input end of the four-way level detection circuit and the two-way binding force detection circuit. When the four-way level detection circuit is energized and the upper-arm electronic blood pressure monitor housing is not tilted forward, backward, left, or right, the mercury level inside the four mercury switches Q1 will not submerge the two upper contacts. Consequently, none of the four LEDs VL will illuminate, indicating the housing is stable and blood pressure testing can proceed. If the lower end of the upper-arm electronic blood pressure monitor housing tilts forward, backward, left, or right for any reason, the mercury level inside the corresponding mercury switch Q1 will submerge the two internal contacts. Consequently, one of the corresponding LEDs VL will illuminate (resistor R5 steps down the voltage and limits the current), indicating that the housing is not stable and that blood pressure testing needs to be stopped and the housing leveled before re-leveling. (The four diodes are marked on the housing with the letters "front," "back," "left," and "right," respectively, allowing the user to visually identify the tilt by the corresponding LED.)

[0022] Figure 1 、 2As shown in Figure 3, after the first binding force detection circuit is energized and working, when the armband binding force is appropriate and not too large (when the armband is properly tied, the user can insert two parallel fingers between the front inner side of the tied armband and the outer side of the human arm), the force acting on the force-bearing surface of the pressure resistor T by the human arm is relatively small, the resistance value of the pressure resistor T is relatively large, and the voltage signal output by pin 5 of the time control module W is relatively large after being divided between the pressure resistor T, the adjustable resistor RP1 and the resistor R2. As a result, the voltage entering the base of the transistor VT1 is lower than 0.7V, the transistor VT1 will not conduct, and the indicator light H1 will not be energized and illuminated, indicating that the armband binding force is not too large. When the armband binding force is inappropriate and too large, the force acting on the force surface of the pressure resistor T is relatively large due to the human arm force, and the resistance value of the pressure resistor T is relatively small. The voltage signal output by pin 5 of the time control module WW is relatively small after being divided among the pressure resistor T, the adjustable resistor RP1 and the resistor R2. In this way, the base voltage of the transistor VT1 is higher than 0.7V, and the transistor VT1 will be turned on and the collector output is low, which enters the negative power input terminal of the indicator light H1. The indicator light H1 will be energized and light up to remind the user that the armband binding force is too large (the resistor R6 has the function of voltage reduction and current limiting). After the second binding force detection circuit is energized and working, when the armband binding force is appropriate but not too small, the force acting on the force surface of the pressure resistor T is relatively appropriate to the force exerted by the human arm, the resistance value of the pressure resistor T is relatively small, and the voltage signal output by pin 5 of the time relay module W is relatively small after being divided by the pressure resistor T, the adjustable resistor RP2 and the resistor R3. In this way, the voltage entering the base of the transistor VT2 is higher than 0.7V, the transistor VT2 will be turned on and the collector output low level enters the base of the transistor VT3. The transistor VT3 will not be turned on, and the indicator light H2 will not be energized and light up, indicating that the armband binding force is not too small. When the armband binding force is inappropriate and too small, the force acting on the force surface of the pressure resistor T by the human arm is relatively small, the resistance value of the pressure resistor T is relatively large, and the voltage signal output by pin 5 of the time control module W is relatively large after being divided by the pressure resistor T, the adjustable resistor RP2 and the resistor R3. In this way, the base voltage of the transistor VT2 is lower than 0.7V, and the collector of the transistor VT2 will be cut off and no longer output a low level to enter the base of the transistor VT3. The transistor VT3 obtains a suitable forward bias voltage through the resistor R4 to reduce the voltage and limit the current. The transistor VT3 will turn on the collector and output a low level to the negative power input terminal of the indicator light H2. The indicator light H2 will be energized and light up to remind the user that the armband binding force is too small (resistor R7 reduces the voltage and limits the current).

[0023] Figure 1 、 2As shown in Figure 3, through the above, when the present invention is used, after the user ties the armband and presses the detection button, the horizontality of the upper arm electronic blood pressure monitor body and the binding force of the armband can be automatically detected. When the front, back, left, and right horizontality of the upper arm electronic blood pressure monitor body deviates, or when the binding force of the armband is too large or too small, a prompt signal can be generated in time, and the user can make targeted adjustments, thereby ensuring the accuracy of the detected blood pressure data as much as possible.

[0024] Those skilled in the art should understand that although this specification is described in terms of implementation methods, the implementation methods do not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. Therefore, the scope of protection of this application is defined by the claims.

Claims

1. An upper arm electronic blood pressure monitor with the function of detecting balance and binding force, comprising an upper arm electronic blood pressure monitor body, a time control module, and a pressure resistor, characterized in that: It also has a horizontal detection circuit and a binding force detection circuit; the pressure resistor is installed on the inner end of the arm band of the upper arm electronic blood pressure monitor body, the horizontal detection circuit has multiple channels, and the binding force detection circuit has at least two channels; the timing control module, the horizontal detection circuit, and the binding force detection circuit are installed in the upper arm electronic blood pressure monitor body; the two terminal ends of the pressure resistor are electrically connected in series between the two signal input ends of the first binding force detection circuit and the second binding force detection circuit; the power output end of the timing control module is electrically connected to the power input ends of the multiple horizontal detection circuits and the two binding force detection circuits, and the other end of the start detection button of the upper arm electronic blood pressure monitor body is electrically connected to the signal input end of the timing control module.

2. The upper arm electronic blood pressure monitor with the function of detecting balance and binding force according to claim 1, characterized in that: The height of the pressure resistor is higher than the height of the inner end of the armband.

3. The upper arm electronic blood pressure monitor with the function of detecting balance and binding force according to claim 1, characterized in that: Each level detection circuit includes an electrically connected mercury switch, a resistor, and a light-emitting diode. The mercury switches of the multiple level detection circuits are vertically distributed and installed around the lower end of the shell of the upper arm electronic blood pressure monitor. In each level detection circuit, one end of the mercury switch is connected to one end of the resistor, and the other end of the resistor is connected to the positive electrode of the light-emitting diode.

4. The upper arm electronic blood pressure monitor with the function of detecting balance and binding force according to claim 3, characterized in that: The mercury switch is a one-way mercury switch.

5. The upper arm electronic blood pressure monitor with the function of detecting balance and binding force according to claim 1, characterized in that: The pressure resistor is equipped with a resistor, one end of the pressure resistor is connected to one end of the resistor, and the other end of the pressure resistor is electrically connected to the power output end of the time control module.

6. The upper arm electronic blood pressure monitor with the function of detecting balance and binding force according to claim 1, characterized in that: The first binding force detection circuit includes an electrically connected adjustable resistor and a resistor, a transistor, and an indicator light. One end of the adjustable resistor is connected to one end of the first resistor and the base of the transistor, the collector of the transistor is connected to one end of the second resistor, the other end of the second resistor is connected to the negative power input end of the indicator light, and the other end of the first resistor is connected to the emitter of the transistor.

7. The upper arm electronic blood pressure monitor with the function of detecting balance and binding force according to claim 1, characterized in that: The second binding force detection circuit includes an electrically connected adjustable resistor and a resistor, a transistor, and an indicator light. One end of the adjustable resistor is connected to one end of the first resistor and the base of the transistor. The collector of the first transistor is connected to the base of the second transistor and one end of the second resistor. The collector of the second transistor is connected to one end of the third resistor. The other end of the third resistor is connected to the negative power input end of the indicator light. The positive power input end of the indicator light is connected to the other end of the second resistor. The other end of the first resistor is connected to the emitters of the two transistors.

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