CN211749576U - Pressure measurement control system and blood pressure measuring equipment - Google Patents
Pressure measurement control system and blood pressure measuring equipment Download PDFInfo
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- CN211749576U CN211749576U CN201921826326.4U CN201921826326U CN211749576U CN 211749576 U CN211749576 U CN 211749576U CN 201921826326 U CN201921826326 U CN 201921826326U CN 211749576 U CN211749576 U CN 211749576U
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Abstract
The utility model relates to the technical field of medical equipment, concretely relates to pressure measurement control system and blood pressure measurement equipment. The system comprises a power supply circuit, a power supply circuit and a control circuit, wherein the power supply circuit is provided with an enabling end and at least 2 output ends; the output end of the power supply circuit is used for respectively providing working power supply for the air pump and the air valve; a first control circuit having at least 2 output terminals; each output end of the first control circuit is respectively connected with the controllable switch and used for controlling the on-off of the controllable switch; and the second control circuit is connected with the enabling end of the power supply circuit. The system adopts the second control circuit to control the enabling end of the power circuit, realizes the simultaneous control of the air pump and the air pump, and reduces the use amount of the controllable switch, thereby ensuring that the use amount of the controllable switch is reduced under the condition of realizing double protection of the pressure measurement control system, and avoiding the redundancy of the circuit in the pressure measurement control system.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to pressure measurement control system and blood pressure measurement equipment.
Background
Blood pressure measuring devices are mainly classified into two types, namely mercury column type and electronic (liquid-free) type, and electronic blood pressure measuring devices are generally adopted due to inconvenience in carrying of the mercury column type. The electronic blood pressure measuring device adopts an automatic non-invasive blood pressure measurement (NIBP) method, and can be used for performing non-invasive measurement on blood pressure, in the NIBP measurement process, a limb of a patient needs to be placed in a cuff and the cuff is inflated, and parameters such as diastolic pressure, systolic pressure and the like of the patient are calculated by observing pressure changes in the inflation and deflation processes.
Due to the inflation and pulse blocking concerns, the relevant standards place severe restrictions on the inflation pressure and inflation time at different pressures to avoid injury to the patient's limb tissues from long-term compression. Therefore, in order to prevent the problem of excessive pressure or high pressure time process caused by software and hardware abnormality of the equipment, the design of dual processors, dual pressure sensors, etc. is often adopted in the prior art. For example, referring to fig. 1, fig. 1 shows a pressure measurement control system including a processor a, a processor b, an air pump, an air valve 1, and an air valve 2. The processor a comprises 3 output ends which are respectively connected with controllable switches K1-K3, and the controllable switches K1-K3 respectively control the on-off of the air pump, the air valve 1 and the air valve 2; the processor b comprises 1 output end which simultaneously controls the controllable switches K4-K6, and the controllable switches K4-K6 are used for controlling the on-off of the air pump, the air valve 1 and the air valve 2. That is, the processor a controls the air pump, the air valve 1 and the air valve 2 respectively, and the processor b mainly provides a second safety protection function, and when an abnormality occurs, the second processor b disconnects the air pump, the air valve 1 and the air valve 2 at the same time.
However, in the pressure measurement control system shown in fig. 1, at least six controllable switches are required to realize smooth deflation in case of a fault, which results in redundancy of hardware circuits and high cost.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a pressure measurement control system and pressure measurement control equipment to solve the redundant problem of current pressure measurement control system.
Based on this, the utility model discloses the first aspect provides a pressure measurement control system, include:
a power supply circuit having an enable terminal and at least 2 output terminals; the output end of the power supply circuit is used for respectively providing working power supply for the air pump and the air valve;
a first control circuit having at least 2 output terminals; each output end of the first control circuit controls the work of the air pump and the air valve by controlling the on-off of a controllable switch;
and the second control circuit is connected with the enabling end of the power supply circuit.
The embodiment of the utility model provides a pressure measurement control system, control pressure measurement control system respectively through two control circuit, and controllable switch is connected respectively to the output of first control circuit to realize the control respectively to air pump and pneumatic valve; the second control circuit is connected with the enabling end of the power circuit, and the power supply of the air pump and the air valve can be simultaneously disconnected through the control of the enabling end, so that the air pump and the air valve can be simultaneously controlled. The system adopts the second control circuit to control the enabling end of the power circuit, realizes the simultaneous control of the air pump and the air pump, and reduces the use amount of the controllable switch, thereby ensuring that the use amount of the controllable switch is reduced under the condition of realizing double protection of the pressure measurement control system, and avoiding the redundancy of the circuit in the pressure measurement control system.
With reference to the first aspect, in a first implementation manner of the first aspect, the power supply circuit includes:
a first power supply circuit having a first enable terminal and a first output terminal; the first enabling end is connected with the second control circuit, and the first output end is connected with the air pump;
the second power supply circuit is provided with a second enabling end and a second output end; the second enabling end is connected with the second control circuit, and the second output end is connected with the air valve.
The embodiment of the utility model provides a pressure measurement control system sets up power supply circuit respectively to air pump and pneumatic valve, and power supply circuit provides working power supply to air pump and pneumatic valve respectively promptly, can guarantee the circuit reliability.
With reference to the first aspect or the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the first control circuit includes:
a first detection unit for detecting pressure and/or inflation time;
and one end of the first control unit is connected with the output end of the first detection unit, and the other end of the first control unit controls the work of the air pump and the air valve by controlling the on-off of the controllable switch based on the detection result of the first detection unit.
The embodiment of the utility model provides a pressure measurement control system, first detecting element in first control circuit passes through detection pressure and/or inflation time, can detect arbitrary realization in the two to controllable switch's control, can guarantee the reliability of circuit.
With reference to the first aspect or the first implementation manner of the first aspect, in a third implementation manner of the first aspect, the second control circuit includes:
a second detection unit for detecting pressure and/or inflation time;
and one end of the second control unit is connected with the output end of the second detection unit, and the other end of the second control unit controls the enabling end of the power supply circuit based on the detection result of the second detection unit.
The embodiment of the utility model provides a pressure measurement control system, second detecting element in second control circuit passes through detection pressure and/or inflation time, can detect the arbitrary realization in the two to the control of enabling the end, can guarantee the reliability of circuit.
With reference to the first aspect, in a fourth implementation manner of the first aspect, the system further includes:
and the at least one first reset circuit is connected between the output end of the first control circuit and the controllable switch.
The embodiment of the utility model provides a pressure measurement control system is used for controlling first control circuit through first reset circuit and resets, and sets up it between first control circuit's output and controllable switch, can guarantee that first control circuit is in during the reset, and controllable switch can be in the off-state to improve the circuit reliability.
With reference to the fourth implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the first reset circuit is a first pull-down resistor circuit or a first capacitance-to-ground circuit.
With reference to the first aspect, or the fifth embodiment of the first aspect, in a sixth embodiment of the first aspect, the system further comprises:
and the second reset circuit is connected between the second control circuit and the enabling end of the power supply circuit.
The embodiment of the utility model provides a pressure measurement control system is used for controlling the second control circuit through second reset circuit and resets, and sets up it between second control circuit and power supply circuit's enable end, can guarantee that second control circuit is in during the reset, and power supply circuit output can not go to the ability to improve the circuit reliability.
With reference to the sixth implementation manner of the first aspect, in a seventh implementation manner of the first aspect, the second reset circuit is a second pull-down resistor circuit or a second capacitance-to-ground circuit.
With reference to the first aspect, in an eighth implementation manner of the first aspect, the controllable switch is a triode or a field effect transistor.
According to a second aspect, the embodiment of the present invention further provides a blood pressure measuring device, including:
an air pump and at least one air valve;
the present invention relates to the first aspect, or the pressure measurement control system according to any of the embodiments of the first aspect; one end of the air pump is connected with the first output end of the power supply circuit, and the other end of the air pump is connected with the first output end of the first control circuit through a first controllable switch; one end of the air valve is connected with the second output end of the power supply circuit, and the other end of the air valve is connected with the second output end of the first control circuit through a second controllable switch respectively.
The embodiment of the utility model provides a blood pressure measuring device, which controls a pressure measuring control system through two control circuits respectively, and the output end of a first control circuit is connected with a controllable switch respectively, so as to realize the respective control of an air pump and an air valve; the second control circuit is connected with the enabling end of the power circuit, and the power supply of the air pump and the air valve can be simultaneously disconnected through the control of the enabling end, so that the air pump and the air valve can be simultaneously controlled. The system adopts the second control circuit to control the enabling end of the power circuit, realizes the simultaneous control of the air pump and the air pump, and reduces the use amount of the controllable switch, thereby ensuring that the use amount of the controllable switch is reduced under the condition of realizing double protection of the pressure measurement control system, avoiding the redundancy of the circuit in the pressure measurement control system, and reducing the weight and the volume of the blood pressure measuring equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a pressure measurement control system of the prior art;
fig. 2 is a schematic structural diagram of a pressure measurement control system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another pressure measurement control system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another pressure measurement control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a blood pressure measuring equipment, this blood pressure measuring equipment include sleeve area, pressure measurement control system, air pump and at least one pneumatic valve. Wherein, the pressure measurement control system is used for controlling the air pump and the at least one air valve, and in order to ensure the measurement safety of the blood pressure measurement, the specific structural details of the pressure measurement control system will be described in detail below. Further, the blood pressure measuring device comprises 2 air valves to ensure that the blood pressure measuring device can still safely reduce pressure when one of the air valves fails.
In the working process of the blood pressure measuring equipment, the pressure measuring control system realizes the control of the air pump and the air valve through the detection of the pressure of the cuff, or the inflation time or other parameters. For example, it may be detected whether the pressure of the cuff exceeds a preset pressure value, or the inflation time is timed to detect whether the inflation time exceeds a preset inflation time, or both of them may be detected simultaneously, and so on.
The embodiment of the utility model provides a pressure measurement control system is still provided, as shown in FIG. 2, this system includes: a power supply circuit 10, a first control circuit 30, and a second control circuit 40. Wherein, each output end of the first control circuit 30 controls the operation of the air pump and the air valve by controlling the on-off of the controllable switch. It should be noted that, only 3 controllable switches are shown in fig. 2, but the number of controllable switches in the pressure measurement control system shown in the present invention is not limited thereto, and may be specifically set according to actual conditions, and is not limited herein.
The power supply circuit 10 has an enable terminal EN and at least 2 output terminals. Only 2 output terminals, namely a first output terminal OUT11 and a second output terminal OUT12, are shown in fig. 2. The first output end OUT11 is used for supplying working power to the air pump, and the second output end OUT12 is used for supplying power to the air valve.
The input end of the power circuit 10 is connected to a power supply, and the power supply is converted into working power supplies of the air pump and the air valve through power conversion. The input power supply can be converted into working power supplies of the air pump and the air valve through the power supply circuit; the power circuit may also include two parts, i.e., one part is used for converting the input power into the working power of the air pump, and the other part is used for converting the input power into the working power of the air valve.
The output end of the first control circuit 30 is used for controlling the operation of the air pump and the air valve, and the operation of the air pump and the air valve is adjusted by the on-off of the controllable switches, so that the number of the air pump and the air valve can determine the number of the output end of the first control circuit 30 and the controllable switches. The blood pressure measuring device comprises an air pump and at least one air valve, and the number of the controllable switches and the number of the output ends of the first control circuit 30 are at least 2 correspondingly.
Specifically, referring to fig. 2, the output end of the first control circuit 30 is connected to the branch where the air pump and the air valve are located through the controllable switch. The first output end of the first control circuit 30 is connected to the branch where the air pump is located through the first controllable switch 21, the second output end of the first control circuit 30 is connected to the branch where the first air valve is located through the second controllable switch 22, and the third output end of the first control circuit 30 is connected to the branch where the second air valve is located through the third controllable switch 23. That is, the three output ends of the first control circuit 30 are respectively connected to controllable switches, and the air pump and the two air valves are respectively controlled by controlling the on/off of the controllable switches.
The second control circuit 40 is connected to the enable end EN of the power circuit 10, and controls the on/off of the air pump and the air valve working power supply by controlling the enable end of the power circuit 10, thereby indirectly controlling the air pump and the air valve.
In the pressure measurement control system provided in this embodiment, the two control circuits respectively control the pressure measurement control system, and the output end of the first control circuit 30 is respectively connected to the controllable switches, so as to respectively control the air pump and the air valve; the second control circuit 40 is connected to the enable terminal EN of the power circuit 10, and the power supply of the air pump and the air valve can be simultaneously cut off by controlling the enable terminal EN, so as to simultaneously control the air pump and the air valve. According to the system, the second control circuit 40 is adopted to control the enabling end EN of the power supply circuit 10, the air pump and the air pump are controlled simultaneously, and the using amount of the controllable switch is reduced, so that the using amount of the controllable switch is reduced under the condition that double protection can be realized on the pressure measurement control system, and the redundancy of circuits in the pressure measurement control system is avoided.
As described above, the power circuit 10 may include two parts for supplying the operating power to the air pump and the air valve, respectively. Specifically, as can be seen from fig. 3, the power supply circuit 10 includes a first power supply circuit 11 and a second power supply circuit 12. The first power circuit 11 is connected with the air pump and used for providing working power for the air pump; the second power circuit 12 is connected with the gas valve and is used for providing working power for the gas valve.
The first power circuit 11 has a first enable terminal EN1, a first input terminal IN1 and a first output terminal, the second power circuit 12 has a second enable terminal EN2, a second input terminal IN2 and a second output terminal, and the first enable terminal EN1 and the second enable terminal EN2 are respectively connected to the second control circuit 40. Meanwhile, a first output end of the first power supply circuit 11 is connected with the air pump, and a second output end of the second power supply circuit 12 is connected with the air valve.
Further, the first control circuit 30 comprises a first detection unit 31 and a first control unit 32, the first detection unit 31 is used for detecting the cuff pressure and/or the inflation time. For example, the first detection unit 31 may include a pressure sensor and a measurement circuit thereof for detecting the cuff pressure and transmitting the detection result to the first control unit 32, and/or a timer circuit for starting timing when inflation is started and transmitting a signal to the first control unit 32 when the timing reaches a preset inflation time. Of course, the first detecting unit 31 may also use other circuits to detect the cuff pressure, and/or the inflation time.
One end of the first control unit 32 is connected to the output end of the first detection unit 31, and the other end of the first control unit 32 controls the operation of the air pump and the air valve by controlling the on/off of each controllable switch based on the detection result of the first detection unit. For example, when the first detection unit 31 detects that the inflation time reaches the preset inflation time, it sends a signal to the first control unit 32, and the first control unit 32 sends a control signal to a controllable switch connected to the air pump to turn off the controllable switch, so that the air pump stops working.
Optionally, the second control circuit 40 comprises a second detection unit 41 and a second control unit 42, the second detection unit 41 is used for detecting the cuff pressure, and/or the inflation time. The second detecting unit 41 may be designed to be the same as or different from the first detecting unit 31, and the specific structure thereof is not limited to any particular one, so long as it can detect the cuff pressure and/or the inflation time.
One end of the second control unit 42 is connected to the output end of the second detection unit 41, and the other end of the second control unit 42 controls the enable end of the power supply circuit 10 based on the detection result of the second detection unit 41. For example, when the second detecting unit 41 detects that the cuff pressure reaches the preset pressure value, a signal is sent to the second control unit 42, and the second control unit 42 sends a control signal to the enabling end of the power circuit 10, so that the power circuit 10 is disabled, and the air pump and the air valve are all stopped.
The signals of the first control circuit 30 and the second control circuit 40 are independent from each other, and any one of the two circuits sends out a corresponding control signal when the cuff pressure is too large or the inflation time is too long. The first control circuit 30 may be understood as a control circuit and a fault detection circuit that are required to be provided when the air pump and the air valve in the pressure measurement control system are normally operated, and the second control circuit 40 may be understood as a control circuit for fault detection. Then, when the corresponding pressure preset value or inflation time preset value is set in the first control circuit 30 and the second control circuit 40, the first control circuit and the second control circuit can be distinguished according to the actual situation, so that the influence of the frequent action of the second control circuit 40 on the normal use of the pressure measurement control circuit is avoided.
As an alternative implementation manner of this embodiment, as shown in fig. 4, the pressure measurement control system further includes at least one first reset circuit 33, and the first reset circuit 33 is configured to reset the first control unit 32 in the first control circuit 30. The first reset circuit 33 is connected between the output end of the first control circuit 30 and the controllable switch, and the number of the first reset circuit 33 can be specifically set according to actual situations, which is not limited herein. For example, referring to fig. 4, in the pressure measurement control system shown in fig. 4, a first reset circuit 33 is connected between each output terminal of the first control circuit 30 and the corresponding controllable switch, but the structures of the first reset circuits 33 may be the same or different. The specific structure of the first reset circuit 33 is not limited, and may be a first pull-down resistor circuit, a first ground capacitor circuit, or other circuits.
In some embodiments of the present embodiment, as shown in fig. 4, the pressure measurement control system further includes a second reset circuit 43, and the second reset circuit 43 is connected between the second control circuit 40 and the enable terminal of the power circuit 10, and is configured to reset the second control unit 42 in the second control circuit 40. The specific structure of the second reset circuit 43 is not limited, and may be a second pull-down resistor circuit, a second capacitance-to-ground circuit, or other circuits.
The pull-down resistor circuit (including the first pull-down resistor circuit and the second pull-down resistor circuit) may include a resistor, one end of the resistor is connected between the output end of the first control circuit 30 and the controllable switch, and the other end of the resistor is grounded; the capacitance-to-ground circuit (including the first capacitance-to-ground circuit and the second capacitance-to-ground circuit) may include a capacitor, one end of the capacitor is connected between the output end of the first control circuit 30 and the controllable switch, and the other end of the capacitor is grounded.
The working principle of the pressure measuring control system will be described with reference to fig. 4, wherein the first air valve and the second air valve are both of a normally open type, the controllable switch may be of a triode type or a field effect transistor type, and the reset circuit (including the first reset circuit 33 and the second reset circuit 43) may be partially or entirely omitted according to the internal configuration of the first control circuit 30 and the second control circuit 40.
The detection result of the first detection unit 31 is transmitted to the first control unit 32, and the detection result of the second detection unit 41 is transmitted to the second control unit 42. The signals of the two detection results are mutually independent, and corresponding control signals are sent out when any one of the two detection results finds that the cuff pressure is overlarge or the inflation time is overlong.
For example, when the first control circuit 30 finds that the cuff pressure is too high or the inflation time is too long, it will send out a signal to control the three controllable switches (i.e. the first controllable switch 21, the second controllable switch 22 and the third controllable switch 23) to be turned off. Because the three controllable switches are respectively connected with the air pump, the first air valve and the second air valve in series, once the three controllable switches are disconnected, the air pump stops inflating, and the air valves deflate.
When the second control circuit 40 finds that the cuff pressure is too large or the inflation time is too long, it sends a signal to control the enable end of the power circuit 10, so that the power circuit 10 is powered off. At this time, although the three controllable switches may still be turned on, the air pump may be stopped from inflating and the air valve may be deflated because the power supply has been cut off.
The reset circuit (including the first reset circuit 33 and the second reset circuit 43) is used for respectively controlling the reset states of the corresponding IO of the first control unit 32 and the second control unit 42, and ensuring that both the two control units are reset, and during the reset period, the three controllable switches are in the off state, and the output of the first power circuit 11 and the output of the second power circuit 12 are disabled, so that the air pump and the air valve are not driven. If in the reset state, the corresponding control unit IO is pulled up and down to ensure that the air pump and the air valve do not work, the corresponding reset circuit can be omitted.
It is considered here that both control units are in a reset state because the reset signals of the two control units may not be independent of each other, e.g. the first control unit 32 may issue a reset signal to the second control unit 42. The reset circuit may be designed as a pull-down resistor, a capacitor to ground, or other.
According to the pressure measurement control system, the first control circuit 30 is adopted to control the work of the air pump and the air valve, the second control circuit 40 is adopted to control the enabling state of the power supply circuit 10, the problem that the pressure is too high or the inflation time is too long when software and hardware of the system are in failure can be solved, and the pressure measurement control system is simple in structure and easy to realize.
As described above, the pressure measurement control system is applied to a blood pressure measurement device for controlling the air pump and the at least one air valve. The connection between the air pump, the air valve, and the pressure measurement control system will be described with reference to fig. 2. As shown in fig. 2, one end of the air pump is connected to the first output terminal OUT11 of the power circuit 10, and the other end of the air pump is connected to the first output terminal of the first control circuit 30 through the first controllable switch 21; one end of the first air valve is connected with the second output end OUT12 of the power circuit 10, and the other end of the first air valve is connected with the second output end of the first control circuit 30 through the second controllable switch 22; one end of the second air valve is connected with the second output end OUT12 of the power circuit 10, and the other end of the second air valve is connected with the third output end of the first control circuit 30 through the second controllable switch 22.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A pressure measurement control system, comprising:
a power supply circuit having an enable terminal and at least 2 output terminals; the output end of the power supply circuit is used for respectively providing working power supply for the air pump and the air valve;
a first control circuit having at least 2 output terminals; each output end of the first control circuit controls the work of the air pump and the air valve by controlling the on-off of a controllable switch;
and the second control circuit is connected with the enabling end of the power supply circuit.
2. The pressure measurement control system according to claim 1, wherein the power supply circuit includes:
a first power supply circuit having a first enable terminal and a first output terminal; the first enabling end is connected with the second control circuit, and the first output end is connected with the air pump;
the second power supply circuit is provided with a second enabling end and a second output end; the second enabling end is connected with the second control circuit, and the second output end is connected with the air valve.
3. The pressure measurement control system according to claim 1 or 2, wherein the first control circuit includes:
a first detection unit for detecting pressure and/or inflation time;
and one end of the first control unit is connected with the output end of the first detection unit, and the other end of the first control unit controls the work of the air pump and the air valve by controlling the on-off of the controllable switch based on the detection result of the first detection unit.
4. The pressure measurement control system according to claim 1 or 2, wherein the second control circuit includes:
a second detection unit for detecting pressure and/or inflation time;
and one end of the second control unit is connected with the output end of the second detection unit, and the other end of the second control unit controls the enabling end of the power supply circuit based on the detection result of the second detection unit.
5. The pressure measurement control system according to claim 1, further comprising:
and the at least one first reset circuit is connected between the output end of the first control circuit and the controllable switch.
6. The pressure measurement control system according to claim 5, wherein the first reset circuit is a first pull-down resistor circuit or a first capacitance-to-ground circuit.
7. The pressure measurement control system according to claim 1 or 5, wherein the system further comprises:
and the second reset circuit is connected between the second control circuit and the enabling end of the power supply circuit.
8. The pressure measurement control system according to claim 7, wherein the second reset circuit is a second pull-down resistor circuit or a second capacitance-to-ground circuit.
9. The pressure measurement control system according to claim 1, wherein the controllable switch is a triode or a field effect transistor.
10. A blood pressure measuring device, comprising:
an air pump and at least one air valve;
the pressure measurement control system of any one of claims 1-9; one end of the air pump is connected with the first output end of the power supply circuit, and the other end of the air pump is connected with the first output end of the first control circuit through a first controllable switch; one end of the air valve is connected with the second output end of the power supply circuit, and the other end of the air valve is connected with the second output end of the first control circuit through a second controllable switch respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921826326.4U CN211749576U (en) | 2019-10-28 | 2019-10-28 | Pressure measurement control system and blood pressure measuring equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921826326.4U CN211749576U (en) | 2019-10-28 | 2019-10-28 | Pressure measurement control system and blood pressure measuring equipment |
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| CN211749576U true CN211749576U (en) | 2020-10-27 |
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| CN201921826326.4U Active CN211749576U (en) | 2019-10-28 | 2019-10-28 | Pressure measurement control system and blood pressure measuring equipment |
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