CN113271156A - ICP electric signal communication method and ICP measuring device - Google Patents
ICP electric signal communication method and ICP measuring device Download PDFInfo
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- CN113271156A CN113271156A CN202110548075.3A CN202110548075A CN113271156A CN 113271156 A CN113271156 A CN 113271156A CN 202110548075 A CN202110548075 A CN 202110548075A CN 113271156 A CN113271156 A CN 113271156A
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- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
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- A61B5/03—Detecting, measuring or recording fluid pressure within the body other than blood pressure, e.g. cerebral pressure; Measuring pressure in body tissues or organs
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Abstract
The application relates to a communication method of an ICP electric signal and an ICP measuring device, wherein the communication method comprises the following steps: the ICP electric signal is configured to carry out zero calibration signals and calibration signals required by communication, the zero calibration signals and the calibration signals are sent to a monitor which is in communication connection so as to carry out calibration on a signal receiving channel of the monitor, and the ICP electric signal is transmitted to the signal receiving channel of the monitor. Because ICP measuring device carries out zero calibration to the signal reception passageway of monitor through output zero calibration signal to output calibration signal and carry out calibration to the signal reception passageway of monitor, can effectively rectify the signal reception passageway of monitor, thereby eliminate the noise interference that transmission channel introduced in ICP signal transmission process, effectively promote the communication performance between ICP measuring device and the monitor.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to an ICP electric signal communication method and an ICP measuring device.
Background
The monitoring of Intracranial Pressure (ICP) plays a key guiding role in early diagnosis and treatment of craniocerebral injury, and the dynamic monitoring of Intracranial Pressure and the change of the waveform of the Intracranial Pressure have important reference values for judging Intracranial injury and encephaledema conditions, estimating prognosis and the like.
In medical clinical practice, the long-time continuous monitoring of various physiological parameters of a patient is beneficial to adjusting the environment of the patient, so that secondary damage is avoided, and a better prognosis effect is realized. Many bedside monitors that have now do not possess the function of monitoring intracranial pressure, and intracranial pressure monitoring still need use the ICP measuring apparatu, just so leads to doctor and nurse when observing patient vital sign, need observe more than one monitor, and not only with high costs and occupy the place, still be unfavorable for the integration and the comprehensive judgement of each instrument data, bring the application puzzlement for medical personnel.
In addition, the communication and data processing technology of the bedside monitor and the workstation is well developed, but the data of the ICP meter is not included in the data, and if the ICP data is added to the data, the agreement permission of the bedside monitor and the workstation supplier needs to be obtained, however, the brand of the bedside monitors on the market is numerous, and the agreement permission of the monitors of different brands needs to be obtained, which causes the problem that the interconnection and intercommunication of the ICP meter and other bedside monitors are obstructed.
Disclosure of Invention
The technical problem that this application mainly solved is: how to improve the communication performance of the ICP measuring instrument and other bedside monitors. In order to solve the technical problem, the application provides a communication method of an ICP electrical signal and an ICP measuring device.
In a first aspect, a method of communicating an ICP electrical signal is provided in one embodiment, comprising: configuring a zero calibration signal and a calibration signal required by ICP electric signal communication; sending the zero calibration signal and the calibration signal to a monitor in communication connection so as to calibrate a signal receiving channel of the monitor; and transmitting the ICP electric signal to a signal receiving channel of the monitor.
The zero calibration signal and the calibration signal required for configuring the ICP electric signal to communicate comprise: controlling generation of a first analog electrical signal and configuring the first analog electrical signal as a zero calibration signal; the zero calibration signal is used for representing a pressure value of 0 mmHg; controlling to generate a second analog electrical signal, making a preset reference voltage and a signal of the second analog electrical signal amplified by a preset proportion sum to obtain a positive analog electrical signal, making a preset reference voltage and a signal of the second analog electrical signal attenuated by a preset proportion difference to obtain a negative analog electrical signal, and configuring the positive analog electrical signal and the negative analog electrical signal to form a calibration signal; the second analog electrical signal is used for simulating the fluctuation characteristic of the ICP electrical signal.
The sending the zero calibration signal and the calibration signal to a monitor in communication connection to calibrate a signal receiving channel of the monitor includes: constructing a signal transmission path in communication connection with the monitor; sending the zero calibration signal to the monitor by using the signal transmission channel, so that the monitor responds to the zero calibration signal to perform zero calibration on a signal receiving channel of the monitor; and sending the calibration signal to the monitor by utilizing the signal transmission channel, so that the monitor responds to the calibration signal to calibrate the signal receiving channel of the monitor.
The signal receiving channel for transmitting the ICP electrical signal to the monitor comprises: and transmitting the ICP electric signal to the monitor by utilizing the signal transmission channel.
In a second aspect, an embodiment provides an ICP measuring apparatus, comprising: a probe for detecting intracranial pressure in a patient and forming an ICP electrical signal; an analog signal circuit for generating an analog electrical signal; the communication interface is used for being in communication connection with a monitor; the master control circuit is connected with the probe, the analog signal circuit and the communication interface; the main control circuit is used for configuring the analog electric signal generated by the analog signal circuit into a zero calibration signal and a calibration signal required by ICP electric signal communication, sending the zero calibration signal and the calibration signal to the monitor through the communication interface to calibrate a signal receiving channel of the monitor, and transmitting the ICP electric signal formed by the probe to the signal receiving channel of the monitor.
The analog signal circuit comprises a digital-to-analog converter, an in-phase amplifier and a subtracter; the main control circuit is used for controlling the digital-to-analog converter to generate a first analog electric signal and configuring the first analog electric signal into a zero calibration signal; the zero calibration signal is used for representing a pressure value of 0 mmHg; the digital-to-analog converter is also used for generating a second analog electric signal under the action of the main control circuit, and the second analog electric signal is used for simulating the fluctuation characteristic of the ICP electric signal; the in-phase amplifier is used for summing a signal obtained by amplifying a preset reference voltage and the second analog electric signal by a preset proportion to obtain a positive analog electric signal, and the subtracter is used for subtracting a signal obtained by attenuating the preset reference voltage and the second analog electric signal by the preset proportion to obtain a negative analog electric signal; the master control circuit is further configured to form a calibration signal using the positive analog electrical signal and the negative analog electrical signal.
The analog signal circuit further comprises a calibration sub-circuit; the calibration sub-circuit is used for comparing a positive analog electric signal generated by the in-phase amplifier or a negative analog electric signal generated by the subtracter with a preset theoretical voltage value, and adjusting a second analog electric signal generated by the digital-to-analog converter according to a comparison result so as to enable the positive analog electric signal or the negative analog electric signal to be equal to the theoretical voltage value.
The ICP measuring device further comprises a filter circuit, wherein the filter circuit is connected with the probe and the main control circuit and used for filtering ICP electric signals formed by the probe and sending the ICP electric signals without power frequency interference to the main control circuit.
The ICP measuring device also comprises a display screen, and the display screen is connected with the main control circuit; the main control circuit is further used for calculating one or more of systolic pressure, average pressure, diastolic pressure and pressure reactivity index according to the ICP electric signal, and sending the calculation result to the display screen for displaying.
In a third aspect, an embodiment provides a computer-readable storage medium, which includes a program executable by a processor to implement the communication method described in the first aspect.
The beneficial effect of this application is:
according to the communication method of the ICP electric signal and the ICP measuring device of the embodiment, the communication method comprises the following steps: the ICP electric signal is configured to carry out zero calibration signals and calibration signals required by communication, the zero calibration signals and the calibration signals are sent to a monitor which is in communication connection so as to carry out calibration on a signal receiving channel of the monitor, and the ICP electric signal is transmitted to the signal receiving channel of the monitor. On the first hand, the ICP measuring device performs the zero calibration processing on the signal receiving channel of the monitor by outputting the zero calibration signal, and the calibration signal is output to perform the calibration processing on the signal receiving channel of the monitor, so that the signal receiving channel of the monitor can be effectively calibrated, the noise interference introduced by the transmission channel in the ICP electric signal transmission process is eliminated, and the communication performance between the ICP measuring device and the monitor is effectively improved; in the second aspect, because the ICP electric signal is transmitted to the monitor, the monitor is favorable for directly receiving the ICP electric signal through an IBP channel (invasive blood pressure channel) of the monitor and further generating a measurement result of intracranial pressure, and the ICP measurement device does not need to transmit a processing result of the ICP electric signal by the ICP measurement device by using a complicated communication protocol; in a third aspect, the communication method provided by the application is beneficial to the ICP measuring device to accurately and unmistakably transmit the detected ICP electric signal to the monitor, the monitor is convenient to integrally display the intracranial pressure parameter and other monitoring parameters of the patient, and the matching use performance of the ICP measuring device and the bedside monitor is improved.
Drawings
Fig. 1 is a schematic structural diagram of an ICP measuring apparatus according to an embodiment of the present application;
FIG. 2 is a schematic view of the connection of the ICP measuring device and the monitor;
FIG. 3 is a schematic diagram of an analog signal circuit;
FIG. 4 is a schematic structural view of an ICP measuring apparatus according to another embodiment;
FIG. 5 is a flow chart of a method of communicating an ICP electrical signal in one embodiment of the present application;
FIG. 6 is a flow chart of sending a zeroing signal and a calibration signal to a monitor;
fig. 7 is a schematic structural diagram of an ICP measuring apparatus in another embodiment of the present application.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The first embodiment,
Referring to fig. 1 and fig. 2, the ICP measuring apparatus 11 includes a probe 111, an analog signal circuit 114, a communication interface 113, and a main control circuit 112, which are respectively described below.
The probe 111 is mainly used for detecting the intracranial pressure of the patient and forming an ICP electrical signal, and the intracranial pressure detection can be performed in an invasive manner or a non-invasive manner in the application, where there are some differences in the type and the arrangement position of the probe 111, but this does not constitute an application limitation of the probe 111, for example, a piezoresistor can be used as a pressure sensing unit to sense the intracranial pressure, so as to convert the sensed intracranial pressure into a corresponding electrical signal.
It should be noted that the probe 111 may include a pressure sensor and conditioning circuitry (not shown in FIG. 1) that cooperate to convert sensed intracranial pressure into an electrical signal.
It should be noted that the Intracranial pressure (ICP) refers to the pressure of Intracranial contents on the cranial cavity wall, and is represented by cerebrospinal fluid pressure. The duration of ICP above 15mmHg is referred to as increased intracranial pressure. In neurosurgical clinics, increased ICP is one of the most common causes of patient deterioration, poor prognosis, or death; ICP monitoring is the most rapid, objective and accurate method for diagnosing intracranial hypertension, and is also an important means for observing the change of the state of illness of a patient, early diagnosis, judging operation time, guiding clinical drug treatment, and judging and improving prognosis. mmHg here means mmHg, and the unit of pressure value is substantially directly expressed in millimeters of height of mercury.
The analog signal circuit 114 is connected to the main control circuit 112, and is mainly used for generating an analog electrical signal. For example, the analog signal circuit 114 may have a digital-to-analog converter (DAC) and other components, and generate some analog electrical signals with specific properties under the action of the main control circuit 112.
The communication interface 113 is connected to the main control circuit 112, and is mainly used for communicating with a monitor. For example, as shown in fig. 1 and 2, the ICP measuring apparatus 11 is communicatively connected to the monitor 12 by a signal cable 13, so that the communication interface 113 of the ICP measuring apparatus 11 can transmit signals to the monitor 12 through the signal cable 13. It should be noted that the monitor 12 may be a common bedside monitor, such as a life monitor for monitoring the heart rate, respiration rate, arterial pressure, and electrocardiogram of a patient, and such a monitor usually has an IBP channel (i.e. invasive blood pressure channel), and then a standard parameter interface corresponding to the IBP channel can be used to access the signal cable 13.
It should be noted that the communication interface 113 may adopt interfaces of types such as USB, RS232, RS485, GPIB, RJ45, VGA, LAN, BNC, RCA, etc., and may also adopt other types of standard parameter interfaces used in current monitors, as long as the analog electrical signals can be transmitted through an adapted protocol or format, and the specific type is not limited.
The main control circuit 112 is connected with the probe 111, the analog signal circuit 114 and the communication interface 113; the main control circuit 112 is mainly used for configuring the analog electrical signal generated by the analog signal circuit 114 into a zeroing signal and a calibration signal required for ICP electrical signal communication, sending the zeroing signal and the calibration signal to the monitor 12 through the communication interface 113 to calibrate the signal receiving channel of the monitor 12, and transmitting the ICP electrical signal formed by the probe 111 to the signal receiving channel of the monitor 12.
It should be noted that the main control circuit 112 may include a signal acquisition chip and a processing chip (not shown in fig. 1 and fig. 3), the signal acquisition chip may employ an ADC, and can convert the ICP electrical signal into a digital signal, and then the processing chip further analyzes the digital signal to obtain a measurement result of the intracranial pressure. In addition, the processing chip can also classify and configure the analog electrical signals generated by the analog signal circuit 114, so as to configure the zero calibration signal and the calibration signal.
In the present embodiment, referring to fig. 1 and fig. 3, the analog signal circuit 114 includes a digital-to-analog converter 1141, a non-inverting amplifier 1142 and a subtractor 1143, which are respectively described as follows.
In one embodiment, since the main control circuit 112 is connected to the analog signal circuit 114, the main control circuit 112 can send an instruction to the digital-to-analog converter 1141 to control the digital-to-analog converter 1141 to generate a first analog electrical signal, and thereafter the main control circuit 112 configures the first analog electrical signal as a zero calibration signal; the zero calibration signal here is used to characterize a pressure value of 0 mmHg.
In one embodiment, the digital-to-analog converter 1141 is further configured to generate a second analog electrical signal under the action of the main control circuit 112, and the second analog electrical signal is used to simulate the fluctuation characteristic of the ICP electrical signal. The non-inverting amplifier 1142 is connected to the digital-to-analog converter 1141, and configured to sum a signal obtained by amplifying a preset reference voltage and the second analog electrical signal by a preset ratio to obtain a positive analog electrical signal; the subtractor 1143 is connected to the digital-to-analog converter 1141, and configured to subtract a preset reference voltage from a signal of the second analog electrical signal attenuated by a preset proportion to obtain a negative analog electrical signal; the master control circuit 112 is then also configured to form a calibration signal using the positive analog electrical signal generated by the non-inverting amplifier 1142 and the negative analog electrical signal generated by the subtractor 1143.
It should be noted that the preset reference voltage may be configured by the main control circuit 112, and the voltage value is not particularly limited. The preset amplification ratio of the second analog electrical signal or the preset attenuation ratio of the second analog electrical signal can also be configured by the main control circuit 112, and the size of the ratio is not particularly limited.
The positive analog electrical signal generated by the non-inverting amplifier 1142 and the negative analog electrical signal generated by the subtractor 1143 can be used to simulate the positive and negative signals of ICP, and the calibration signal formed therefrom also has some characteristics of ICP, and can be used to perform a preliminary calibration on the communication channel to ensure the effectiveness of subsequent ICP electrical signal transmission.
Further, referring to fig. 3, the analog signal circuit 114 further includes a calibration sub-circuit 1144, and the calibration sub-circuit 1144 is connected to the digital-to-analog converter 1141, the non-inverting amplifier 1142, and the subtractor 1143. Here, the calibration sub-circuit 1144 may employ a conventional voltage comparator for comparing the positive analog electrical signal generated by the non-inverting amplifier 1142 or the negative analog electrical signal generated by the subtractor 1143 with a preset theoretical voltage value, and adjusting the second analog electrical signal generated by the digital-to-analog converter 1141 according to the comparison result, so that the positive analog electrical signal or the negative analog electrical signal is equal to the theoretical voltage value. It will be appreciated that the primary function of the calibration sub-circuit 1141 is to correct the analog electrical signal offset caused by the digital-to-analog converter 1141, the in-phase amplifier 1142 and the subtractor 1143.
In another embodiment, referring to fig. 4, the disclosed ICP measuring apparatus 11 further includes a filter circuit 115, where the filter circuit 115 is connected to the probe 111 and the main control circuit 112, and is configured to filter the ICP electrical signal formed by the probe 111 and send the ICP electrical signal without power frequency interference to the main control circuit 112.
Referring to fig. 4, the ICP measuring apparatus 11 further includes a display screen 116, and the display screen 116 is connected to the main control circuit 112. The main control circuit 112 is further configured to calculate one or more of a systolic pressure, an average pressure, a diastolic pressure, and a pressure responsiveness index according to the ICP electrical signal output by the filter circuit 115, and send the calculation result to a display screen for display. Since the systolic pressure, the mean pressure, the diastolic pressure and the pressure reactivity index (PRx) are common indicators for characterizing the intracranial pressure and are calculated by the existing function formula, the calculation process will not be described in detail herein since the key protection points of this embodiment are not used for calculating such parameters.
Of course, the ICP measuring apparatus 11 may also have a memory device with which the calculated intracranial pressure parameters can be stored for the user to retrieve and view at any time.
Example II,
On the basis of the ICP measuring apparatus disclosed in the first embodiment, the present embodiment discloses a communication method of an ICP electrical signal, which is mainly performed on the main control circuit 112 in fig. 1 to 4. Referring to fig. 5, the ICP electrical signal communication method includes steps 210 and 230, which are described below.
Referring to fig. 1 and 2, the analog electrical signals generated by the analog signal circuit 114 can be configured by the master control circuit 112 as the zeroing signal and the calibration signal required for ICP electrical signal communication, and then the master control circuit 112 can send the zeroing signal and the calibration signal to the monitor 12 through the communication interface 113 to calibrate the signal receiving channel (such as the IBP channel) of the monitor 12.
At step 230, the ICP electrical signal is transmitted to a signal receiving channel of the monitor. Referring to fig. 1 and 2, when the monitor 12 receives the zero calibration signal and the calibration signal, respectively, the signal receiving channel of the monitor 12 is subjected to zero calibration and calibration, and then the main control circuit 112 of the ICP measuring apparatus can transmit the ICP electrical signal formed by the probe 111 to the signal receiving channel of the monitor 12.
Because the signal receiving channel of the monitor 12 is corrected, the received ICP electrical signal can be subjected to a noise suppression effect, and the ICP electrical signal is restored to the maximum extent by eliminating noise interference, so that a signal distortion phenomenon caused by a signal transmission path formed by an interface and a signal cable is avoided, and the measurement accuracy of the monitor 12 on the ICP electrical signal can also be improved.
In the present embodiment, the step 210 mainly involves the process of configuring the zero calibration signal and the calibration signal, and mainly includes steps 211 and 212, which are respectively described as follows.
In step 211, the main control circuit 112 controls the analog signal circuit 114 to generate a first analog electrical signal and configures the first analog electrical signal as a zero calibration signal.
In one embodiment, referring to fig. 3, the master control circuit 112 may send an instruction to the digital-to-analog converter 1141, so as to control the digital-to-analog converter 1141 to generate a first analog electrical signal, and thereafter the master control circuit 112 configures the first analog electrical signal as a zero calibration signal; the zero calibration signal here is used to characterize a pressure value of 0 mmHg.
Step 212, the main control circuit 112 controls the analog signal circuit 114 to generate a second analog electrical signal, sums a signal obtained by amplifying the preset reference voltage and the second analog electrical signal by a preset proportion to obtain a positive analog electrical signal, subtracts a signal obtained by attenuating the preset reference voltage and the second analog electrical signal by the preset proportion to obtain a negative analog electrical signal, and configures the positive analog electrical signal and the negative analog electrical signal to form a calibration signal; the second analog electrical signal is used to simulate the ripple characteristics of the ICP electrical signal.
In a specific embodiment, referring to fig. 3, the digital-to-analog converter 1141 generates a second analog electrical signal under the action of the main control circuit 112, the non-inverting amplifier 1142 sums a signal obtained by amplifying a preset reference voltage and the second analog electrical signal by a preset proportion to obtain a positive analog electrical signal, and the subtractor 1143 subtracts a signal obtained by attenuating the preset reference voltage and the second analog electrical signal by the preset proportion to obtain a negative analog electrical signal; the main control circuit 112 then forms a calibration signal using the positive analog electrical signal generated by the non-inverting amplifier 1142 and the negative analog electrical signal generated by the subtractor 1143.
In the present embodiment, the step 220 mainly relates to the process of sending the zero calibration signal and the calibration signal, please refer to fig. 2, the step 220 may specifically include steps 210 and 230, which are respectively described as follows.
In step 210, the main control circuit 112 of the ICP measuring apparatus 11 establishes a signal transmission path in communication connection with the monitor 12. Referring to fig. 1 and 2, the main control circuit 112 recognizes that a signal transmission path is established when the signal cable 13 is detected to be effectively connected between the ICP measuring device 11 and the monitor 12 and signal transmission is enabled.
In step 220, the main control circuit 112 sends a zero calibration signal to the monitor 12 via the signal transmission path, so that the monitor 12 performs zero calibration on its own signal receiving channel (e.g., IBP channel) in response to the zero calibration signal, and at this time, the monitor 12 may use a voltage value corresponding to the zero calibration signal as a reference of the pressure value of 0 mmHg.
In step 230, the main control circuit 112 further sends a calibration signal to the monitor 12 via the signal transmission path, so that the monitor 12 can perform calibration on its own signal receiving channel (e.g., IBP channel) in response to the calibration signal, and at this time, the monitor 12 can perform noise interference suppression and elimination on the signal receiving channel.
It should be noted that, because the ICP measuring device 11 performs the zeroing process on the signal receiving channel of the monitor 12 by outputting the zeroing signal, and outputs the calibration signal to perform the calibration process on the signal receiving channel of the monitor 12, the signal receiving channel of the monitor 12 can be effectively calibrated, so that the noise interference introduced by the transmission channel in the ICP electrical signal transmission process is eliminated, and the communication performance between the ICP measuring device 11 and the monitor 12 is effectively improved
In this embodiment, the monitor 12 will feed back information of channel calibration completion to the ICP measuring device 11 after performing zero calibration and calibration on its own signal receiving channel, so that the main control circuit 112 of the ICP measuring device 11 can transmit the ICP electrical signal to the signal receiving channel of the monitor 12, and specifically, the main control circuit 112 accurately and unmistakably transmits the ICP electrical signal generated by the probe 111 to the monitor 12 by using the constructed signal transmission path. Next, the monitor 12 can obtain the intracranial pressure parameter according to the ICP electrical signal measurement, and integrate and display the intracranial pressure parameter and other monitoring parameters of the patient, thereby improving the matching usability of the ICP measuring device 11 and the monitor 12.
It should be noted that, because the ICP measuring device 11 transmits the ICP electrical signal to the monitor 12, the monitor 12 is favorable to directly receive the ICP electrical signal through its own IBP channel (invasive blood pressure channel) and further generate a measurement result of intracranial pressure, so that the ICP measuring device 11 does not need to use a cumbersome communication protocol to transmit a processing result of its own ICP electrical signal any more, and because the communication process is simple and efficient, the problem of protocol permission caused when the ICP measuring device 11 is compatible with communication protocols of different manufacturers can be avoided.
Example III,
On the basis of the ICP electrical signal communication method disclosed in the second embodiment, an ICP measurement apparatus is disclosed in this embodiment.
Referring to fig. 7, the ICP measuring apparatus 3 includes a memory 31 and a processor 32. The memory 31 may be regarded as a computer-readable storage medium for storing a program, which may be a program code corresponding to the communication method in the second embodiment.
The processor 32 is connected to the memory 31, and implements a communication method of the ICP electric signal by executing the program stored in the memory 31. Then, the functions implemented by the processor 32 can refer to step 210 and step 230 in the second embodiment, and will not be described in detail here.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by computer programs. When all or part of the functions of the above embodiments are implemented by a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a read only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to realize the above functions. For example, the program may be stored in a memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above may be implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and may be downloaded or copied to a memory of a local device, or may be version-updated in a system of the local device, and when the program in the memory is executed by a processor, all or part of the functions in the above embodiments may be implemented.
The technical solutions of the present application are described above by using specific examples, which are only used to help understanding of the present application and are not intended to limit the present application. For those skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the present application.
Claims (10)
1. A method of communicating an ICP electrical signal, comprising:
configuring a zero calibration signal and a calibration signal required by ICP electric signal communication;
sending the zero calibration signal and the calibration signal to a monitor in communication connection so as to calibrate a signal receiving channel of the monitor;
and transmitting the ICP electric signal to a signal receiving channel of the monitor.
2. The communication method of claim 1, wherein configuring the zero calibration signal and the calibration signal required for the ICP electrical signal to communicate comprises:
controlling generation of a first analog electrical signal and configuring the first analog electrical signal as a zero calibration signal; the zero calibration signal is used for representing a pressure value of 0 mmHg;
controlling to generate a second analog electrical signal, making a preset reference voltage and a signal of the second analog electrical signal amplified by a preset proportion sum to obtain a positive analog electrical signal, making a preset reference voltage and a signal of the second analog electrical signal attenuated by a preset proportion difference to obtain a negative analog electrical signal, and configuring the positive analog electrical signal and the negative analog electrical signal to form a calibration signal; the second analog electrical signal is used for simulating the fluctuation characteristic of the ICP electrical signal.
3. The communication method of claim 2, wherein said sending the zeroing signal and the calibration signal to a communicatively connected monitor to calibrate a signal receiving channel of the monitor comprises:
constructing a signal transmission path in communication connection with the monitor;
sending the zero calibration signal to the monitor by using the signal transmission channel, so that the monitor responds to the zero calibration signal to perform zero calibration on a signal receiving channel of the monitor;
and sending the calibration signal to the monitor by utilizing the signal transmission channel, so that the monitor responds to the calibration signal to calibrate the signal receiving channel of the monitor.
4. A method of communicating according to claim 3, wherein said transmitting said ICP electrical signal to a signal receiving channel of said monitor comprises: and transmitting the ICP electric signal to the monitor by utilizing the signal transmission channel.
5. An ICP measuring device, comprising:
a probe for detecting intracranial pressure in a patient and forming an ICP electrical signal;
an analog signal circuit for generating an analog electrical signal;
the communication interface is used for being in communication connection with a monitor;
the master control circuit is connected with the probe, the analog signal circuit and the communication interface; the main control circuit is used for configuring the analog electric signal generated by the analog signal circuit into a zero calibration signal and a calibration signal required by ICP electric signal communication, sending the zero calibration signal and the calibration signal to the monitor through the communication interface to calibrate a signal receiving channel of the monitor, and transmitting the ICP electric signal formed by the probe to the signal receiving channel of the monitor.
6. An ICP measuring apparatus as claimed in claim 5, wherein the analog signal circuit includes a digital-to-analog converter, a non-inverting amplifier and a subtractor;
the main control circuit is used for controlling the digital-to-analog converter to generate a first analog electric signal and configuring the first analog electric signal into a zero calibration signal; the zero calibration signal is used for representing a pressure value of 0 mmHg;
the digital-to-analog converter is also used for generating a second analog electric signal under the action of the main control circuit, and the second analog electric signal is used for simulating the fluctuation characteristic of the ICP electric signal; the in-phase amplifier is used for summing a signal obtained by amplifying a preset reference voltage and the second analog electric signal by a preset proportion to obtain a positive analog electric signal, and the subtracter is used for subtracting a signal obtained by attenuating the preset reference voltage and the second analog electric signal by the preset proportion to obtain a negative analog electric signal; the master control circuit is further configured to form a calibration signal using the positive analog electrical signal and the negative analog electrical signal.
7. An ICP measuring device as claimed in claim 6, wherein the analog signal circuit further includes a calibration sub-circuit; the calibration sub-circuit is used for comparing a positive analog electric signal generated by the in-phase amplifier or a negative analog electric signal generated by the subtracter with a preset theoretical voltage value, and adjusting a second analog electric signal generated by the digital-to-analog converter according to a comparison result so as to enable the positive analog electric signal or the negative analog electric signal to be equal to the theoretical voltage value.
8. An ICP measuring device according to claim 5, further comprising a filter circuit, wherein the filter circuit is connected with the probe and the main control circuit, and is used for filtering the ICP electric signal formed by the probe and sending the ICP electric signal without power frequency interference to the main control circuit.
9. An ICP measuring device as set forth in claim 5, further comprising a display screen, the display screen being connected to the main control circuit; the main control circuit is further used for calculating one or more of systolic pressure, average pressure, diastolic pressure and pressure reactivity index according to the ICP electric signal, and sending the calculation result to the display screen for displaying.
10. A computer-readable storage medium, characterized in that the medium has stored thereon a program executable by a processor to implement the communication method according to any one of claims 1 to 4.
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| CN104352232A (en) * | 2014-12-05 | 2015-02-18 | 苏州景昱医疗器械有限公司 | Intracranial pressure monitoring system |
| CN104398251A (en) * | 2014-12-05 | 2015-03-11 | 苏州景昱医疗器械有限公司 | Intracranial pressure monitoring system probe and calibrating method thereof |
| CN104707228A (en) * | 2015-03-02 | 2015-06-17 | 深圳市科曼医疗设备有限公司 | Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method |
| CN208286991U (en) * | 2017-08-08 | 2018-12-28 | 辽宁省肿瘤医院 | Medical monitor signal conversion circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104352232A (en) * | 2014-12-05 | 2015-02-18 | 苏州景昱医疗器械有限公司 | Intracranial pressure monitoring system |
| CN104398251A (en) * | 2014-12-05 | 2015-03-11 | 苏州景昱医疗器械有限公司 | Intracranial pressure monitoring system probe and calibrating method thereof |
| CN104707228A (en) * | 2015-03-02 | 2015-06-17 | 深圳市科曼医疗设备有限公司 | Transnasal high-flow-capacity oxygen therapy pressure monitoring system and method |
| CN208286991U (en) * | 2017-08-08 | 2018-12-28 | 辽宁省肿瘤医院 | Medical monitor signal conversion circuit |
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