阅读说明：本技术 一种双通道血泵的智能供血控制系统及方法 (Intelligent blood supply control system and method of dual-channel blood pump ) 是由 王志锋 谢恒� 陈海初 邓明斌 郑焕楠 陈广新 余猛 于 2021-02-26 设计创作，主要内容包括：本发明提供了一种双通道血泵的智能供血控制系统,包括脉搏信号采集模块、脉搏信号分析模块以及脉搏信号控制模块。脉搏信号采集模块用于采集脉搏信号并对脉搏信号进行预处理,脉搏信号分析模块用于提取预处理后的脉搏信号中的主波信号以及重搏波信号,脉搏信号控制模块用于根据主波信号以及重搏波信号分别驱动第一伺服电机以及第二伺服电机动作以调节第一血泵以及第二血泵的流量大小。本发明可以模拟人体心脏泵血机制而产生脉冲式血流,使得对人体进行体外循环的血液输送过程更加符合人体生理特征,降低了手术的安全性能的问题,改善了大脑局部脑氧饱和度,提高了人体组织的微循环。相应地,本发明还提供一种双通道血泵的智能供血控制方法。(The invention provides an intelligent blood supply control system of a two-channel blood pump, which comprises a pulse signal acquisition module, a pulse signal analysis module and a pulse signal control module. The pulse signal control module is used for respectively driving the first servo motor and the second servo motor to move according to the main wave signal and the counterpulsation wave signal so as to adjust the flow of the first blood pump and the second blood pump. The invention can simulate the human heart blood pumping mechanism to generate pulse blood flow, so that the blood conveying process for extracorporeal circulation of human body is more in accordance with the physiological characteristics of human body, the problem of safety performance of operation is reduced, the local cerebral oxygen saturation of brain is improved, and the microcirculation of human body tissues is improved. Correspondingly, the invention also provides an intelligent blood supply control method of the double-channel blood pump.)

1. An intelligent blood supply control system of a dual-channel blood pump is characterized by comprising:

the pulse signal acquisition module is used for acquiring pulse signals and preprocessing the pulse signals;

the pulse signal analysis module is used for extracting a main wave signal and a dicrotic wave signal in the preprocessed pulse signals;

the pulse signal control module is used for respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of the first blood pump and the second blood pump;

the first servo motor is in transmission connection with the first blood pump, and the second servo motor is in transmission connection with the second blood pump.

2. The intelligent blood supply control system of a dual-channel blood pump as claimed in claim 1, wherein the pulse signal collection module comprises a piezoelectric pulse sensor for collecting pulse signals.

3. The intelligent blood supply control system of a dual-channel blood pump as claimed in claim 2, wherein the pulse signal collection module further comprises a first amplification circuit and a first filter circuit, an input terminal of the first amplification circuit is electrically connected to the signal output terminal of the piezoelectric pulse sensor, an input terminal of the first filter circuit is electrically connected to an output terminal of the first amplification circuit, and the pulse signal collection module pre-processes the pulse signal through the first amplification circuit and the first filter circuit.

4. The intelligent blood-supply control system of a dual-channel blood pump as claimed in claim 3, wherein the pulse signal collection module further comprises a controller, the controller comprises an analog-to-digital conversion circuit, an input end of the analog-to-digital conversion circuit is electrically connected with an output end of the first filter circuit, and an output end of the analog-to-digital conversion circuit is electrically connected with an input end of the pulse signal analysis module.

5. The intelligent blood-supply control system of a dual-channel blood pump as claimed in claim 4, wherein the pulse signal control module comprises a second amplifying circuit, a second filtering circuit and a digital-to-analog conversion circuit, an input end of the second amplifying circuit is electrically connected to an output end of the pulse signal analysis module, an output end of the second amplifying circuit is electrically connected to an input end of the second filtering circuit, and an output end of the second filtering circuit is electrically connected to an input end of the digital-to-analog conversion circuit.

6. An intelligent blood supply control method of a dual-channel blood pump is characterized by comprising the following steps:

collecting pulse signals and preprocessing the pulse signals;

extracting a main wave signal and a dicrotic wave signal in the preprocessed pulse signals;

respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of a first blood pump and a second blood pump;

the first servo motor is in transmission connection with the first blood pump, and the second servo motor is in transmission connection with the second blood pump.

7. The intelligent blood supply control method of a dual-channel blood pump as claimed in claim 6, wherein the specific method for preprocessing the pulse signals comprises the following steps:

amplifying the pulse signal;

and carrying out filtering processing on the pulse signals after the amplification processing.

8. The intelligent blood supply control method of a dual-channel blood pump as claimed in claim 7, wherein the main wave signal and the dicrotic wave signal in the preprocessed pulse signals are extracted by fast fourier transform.

9. The intelligent blood supply control method of a dual-channel blood pump according to claim 8, wherein the specific method for adjusting the flow of the first blood pump and the second blood pump by driving the first servo motor and the second servo motor respectively according to the main wave signal and the dicrotic wave signal comprises the following steps:

amplifying and filtering the main wave signal and the dicrotic wave signal;

performing digital-to-analog conversion processing on the main wave signal and the dicrotic wave signal after filtering processing;

the main wave signal and the dicrotic wave signal after digital-to-analog conversion respectively drive the first servo motor and the second servo motor to act.

10. A computer storage medium, characterized in that the computer-readable storage medium stores a computer program which, when being executed by a processor, implements the method for intelligent blood supply control of a dual-channel blood pump according to any one of claims 6 to 9.

Technical Field

The invention relates to the technical field of data processing, in particular to an intelligent blood supply control system and method of a dual-channel blood pump.

Background

With the improvement of living standard and the progress of science and technology, people have higher and higher requirements on intelligent and automatic equipment. The artificial blood pump is used as a clinical operation medical instrument, and has an irreplaceable function in blood transfusion when assisting a doctor to perform an operation on a patient. Most of the artificial blood pumps on the market at present are classified into three types, namely peristaltic blood delivery pumps, rolling blood pumps and centrifugal blood pumps. The three types of artificial blood pumps generate blood perfusion states which are basically constant-speed advection states. The advection perfusion of blood which circulates outside the human body can cause certain damage to human organ tissues, the safety performance of the operation is reduced, and the structure of the advection perfusion is to be improved.

Disclosure of Invention

Based on the above, in order to solve the problems that the artificial blood pump in the market at present can cause certain damage to human organ tissues when blood advection perfusion for external circulation of a human body is performed, and the safety performance of the operation is reduced, the invention provides an intelligent blood supply control system and method of a dual-channel blood pump, and the specific technical scheme is as follows:

an intelligent blood supply control system of a two-channel blood pump comprises a pulse signal acquisition module, a pulse signal analysis module and a pulse signal control module.

The pulse signal acquisition module is used for acquiring pulse signals and preprocessing the pulse signals; the pulse signal analysis module is used for extracting a main wave signal and a dicrotic wave signal in the preprocessed pulse signals; the pulse signal control module is used for respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of the first blood pump and the second blood pump.

The first servo motor is in transmission connection with the first blood pump, and the second servo motor is in transmission connection with the second blood pump.

According to the intelligent blood supply control system of the dual-channel blood pump, the main wave signal and the counterpulsation wave signal in the pulse signal after pretreatment are extracted, the first servo motor and the second servo motor are respectively driven to act according to the main wave signal and the counterpulsation wave signal so as to adjust the flow of the first blood pump and the flow of the second blood pump, a human heart pumping mechanism can be simulated to generate pulse blood flow, the blood conveying process of extracorporeal circulation on a human body is enabled to better accord with the physiological characteristics of the human body, the problem that certain damage can be caused to human organ tissues when the blood advection perfusion of the extracorporeal circulation on the human body is carried out by the artificial blood pump on the market at present is solved, the safety performance of an operation is reduced, the local cerebral oxygen saturation is improved, and the microcirculation of the human tissues is improved.

Further, the pulse signal acquisition module comprises a piezoelectric pulse sensor, and the piezoelectric pulse sensor is used for acquiring pulse signals.

Further, the pulse signal acquisition module further comprises a first amplifying circuit and a first filter circuit, wherein the input end of the first amplifying circuit is electrically connected with the signal output end of the piezoelectric pulse sensor, the input end of the first filter circuit is electrically connected with the output end of the first amplifying circuit, and the pulse signal acquisition module is used for preprocessing the pulse signal through the first amplifying circuit and the first filter circuit.

Furthermore, the pulse signal acquisition module further comprises a controller, the controller comprises an analog-to-digital conversion circuit, an input end of the analog-to-digital conversion circuit is electrically connected with an output end of the first filter circuit, and an output end of the analog-to-digital conversion circuit is electrically connected with an input end of the pulse signal analysis module.

Furthermore, the pulse signal control module comprises a second amplifying circuit, a second filtering circuit and a digital-to-analog conversion circuit, wherein the input end of the second amplifying circuit is electrically connected with the output end of the pulse signal analysis module, the output end of the second amplifying circuit is electrically connected with the input end of the second filtering circuit, and the output end of the second filtering circuit is electrically connected with the input end of the digital-to-analog conversion circuit.

Correspondingly, the invention provides an intelligent blood supply control method of a dual-channel blood pump, which comprises the following steps:

collecting pulse signals and preprocessing the pulse signals;

extracting a main wave signal and a dicrotic wave signal in the preprocessed pulse signals;

respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of a first blood pump and a second blood pump;

the first servo motor is in transmission connection with the first blood pump, and the second servo motor is in transmission connection with the second blood pump.

Further, the specific method for preprocessing the pulse signal comprises the following steps:

amplifying the pulse signal;

and carrying out filtering processing on the pulse signals after the amplification processing.

Further, a main wave signal and a dicrotic wave signal in the preprocessed pulse signals are extracted through fast Fourier transform.

Further, the specific method for adjusting the flow rates of the first blood pump and the second blood pump by respectively driving the first servo motor and the second servo motor to operate according to the main wave signal and the dicrotic wave signal comprises the following steps:

amplifying and filtering the main wave signal and the dicrotic wave signal;

performing digital-to-analog conversion processing on the main wave signal and the dicrotic wave signal after filtering processing;

the main wave signal and the dicrotic wave signal after digital-to-analog conversion respectively drive the first servo motor and the second servo motor to act.

Accordingly, the present invention provides a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the intelligent blood supply control method for a dual-channel blood pump as described above.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

FIG. 1 is a schematic diagram of the overall structure of an intelligent blood supply control system of a dual-channel blood pump according to an embodiment of the present invention;

fig. 2 is a schematic overall flow chart of an intelligent blood supply control method of a dual-channel blood pump according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

As shown in fig. 1, an intelligent blood supply control system of a dual-channel blood pump in an embodiment of the present invention includes a pulse signal acquisition module, a pulse signal analysis module, and a pulse signal control module.

The pulse signal acquisition module is used for acquiring pulse signals and preprocessing the pulse signals; the pulse signal analysis module is used for extracting a main wave signal and a dicrotic wave signal in the preprocessed pulse signals; the pulse signal control module is used for respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of the first blood pump and the second blood pump.

The first servo motor is in transmission connection with the first blood pump, and the second servo motor is in transmission connection with the second blood pump. And respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of the first blood pump and the second blood pump, and further adjusting the flow of the first blood pump and the second blood pump, so that the outputs of the first blood pump and the second blood pump are jointly converged into a blood catheter, and pulse blood flow can be generated.

According to the intelligent blood supply control system of the dual-channel blood pump, the main wave signal and the counterpulsation wave signal in the pulse signal after pretreatment are extracted, the first servo motor and the second servo motor are respectively driven to act according to the main wave signal and the counterpulsation wave signal so as to adjust the flow of the first blood pump and the flow of the second blood pump, a human heart pumping mechanism can be simulated to generate pulse blood flow, the blood conveying process of extracorporeal circulation on a human body is enabled to better accord with the physiological characteristics of the human body, the problem that certain damage can be caused to human organ tissues when the blood advection perfusion of the extracorporeal circulation on the human body is carried out by the artificial blood pump on the market at present is solved, the safety performance of an operation is reduced, the local cerebral oxygen saturation is improved, and the microcirculation of the human tissues is improved.

In one embodiment, the pulse signal acquisition module comprises a piezoelectric pulse sensor, and the piezoelectric pulse sensor is used for acquiring pulse signals.

In one embodiment, the pulse signal acquisition module further includes a first amplifying circuit and a first filter circuit, an input terminal of the first amplifying circuit is electrically connected to a signal output terminal of the piezoelectric pulse sensor, an input terminal of the first filter circuit is electrically connected to an output terminal of the first amplifying circuit, and the pulse signal acquisition module preprocesses the pulse signal through the first amplifying circuit and the first filter circuit.

In one embodiment, the pulse signal acquisition module further includes a controller, the controller includes an analog-to-digital conversion circuit, an input end of the analog-to-digital conversion circuit is electrically connected to an output end of the first filter circuit, and an output end of the analog-to-digital conversion circuit is electrically connected to an input end of the pulse signal analysis module.

In one embodiment, the pulse signal control module includes a second amplifying circuit, a second filtering circuit and a digital-to-analog conversion circuit, an input end of the second amplifying circuit is electrically connected to an output end of the pulse signal analyzing module, an output end of the second amplifying circuit is electrically connected to an input end of the second filtering circuit, and an output end of the second filtering circuit is electrically connected to an input end of the digital-to-analog conversion circuit.

The controller can be a single chip microcomputer or other types of processors. Since a person skilled in the art can select specific structures of the first amplifying circuit, the first filtering circuit, the second amplifying circuit and the second filtering circuit and a type of the controller according to needs, detailed description is omitted here.

In one embodiment, the pulse signal analysis module may be an upper computer, and LabVIEW software is installed in the upper computer and used for calling a fast fourier transform function in MATLAB to extract a main wave signal and a dicrotic wave signal in the preprocessed pulse signals.

In one embodiment, as shown in fig. 2, the present invention provides an intelligent blood supply control method for a dual-channel blood pump, comprising the following steps:

collecting pulse signals and preprocessing the pulse signals;

extracting a main wave signal and a dicrotic wave signal in the preprocessed pulse signals;

respectively driving a first servo motor and a second servo motor to act according to the main wave signal and the dicrotic wave signal so as to adjust the flow of a first blood pump and a second blood pump;

the first servo motor is in transmission connection with the first blood pump, and the second servo motor is in transmission connection with the second blood pump.

By extracting the main wave signal and the counterpulsation wave signal in the pulse signal after the pretreatment and respectively driving the first servo motor and the second servo motor to act according to the main wave signal and the counterpulsation wave signal so as to adjust the flow of the first blood pump and the second blood pump, a human heart pump blood mechanism can be simulated to generate pulse blood flow, so that the blood conveying process of extracorporeal circulation of a human body is more in line with the physiological characteristics of the human body.

In one embodiment, the specific method for preprocessing the pulse signal includes the following steps:

amplifying the pulse signal;

and carrying out filtering processing on the pulse signals after the amplification processing.

In one embodiment, the main wave signal and the dicrotic wave signal in the preprocessed pulse signals are extracted through fast Fourier transform.

The complex pulse signals formed by a plurality of superposed waves are unfolded into different simple harmonic waves by adopting fast Fourier transform, the characteristic information contained in the pulse signals is extracted, and the pulse signals can be transformed into a frequency domain from a time domain.

In one embodiment, the specific method for adjusting the flow rates of the first blood pump and the second blood pump by driving the first servo motor and the second servo motor to act according to the main wave signal and the dicrotic wave signal respectively comprises the following steps:

amplifying and filtering the main wave signal and the dicrotic wave signal;

performing digital-to-analog conversion processing on the main wave signal and the dicrotic wave signal after filtering processing;

the main wave signal and the dicrotic wave signal after digital-to-analog conversion respectively drive the first servo motor and the second servo motor to act.

The main wave signal and the dicrotic wave signal after digital-to-analog conversion are converted into corresponding analog electric signals. And corresponding analog electric signals are respectively input into the first servo motor and the second servo motor, so that the rotating speeds of the first servo motor and the second servo motor can be controlled, and the flow of the first blood pump and the flow of the second blood pump can be further adjusted.

In one embodiment, the present invention provides a computer storage medium having a computer program stored thereon, which when executed by a processor implements the intelligent blood supply control method for a dual channel blood pump as described above.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.