CN117357782B

CN117357782B - Driving pressure control method, device, equipment and storage medium

Info

Publication number: CN117357782B
Application number: CN202311668079.0A
Authority: CN
Inventors: 林冉; 郝岗卫
Original assignee: Shenzhen Xianjianxinkang Medical Electronics Co ltd
Current assignee: Shenzhen Xianjianxinkang Medical Electronics Co ltd
Priority date: 2023-12-07
Filing date: 2023-12-07
Publication date: 2024-04-02
Anticipated expiration: 2043-12-07
Also published as: CN117357782A

Abstract

The invention discloses a driving pressure control method, a device, equipment and a storage medium, wherein the driving pressure control method is applied to an intra-aortic balloon counterpulsation pump and comprises the following steps: and regulating the rotation speed of the pump according to the pre-acquired rotation speed parameters of the pump, establishing initial vacuum storage tank pressure in the vacuum storage tank, establishing initial storage tank pressure difference between the vacuum storage tank and the high-pressure storage tank, regulating the pressure in the vacuum storage tank to the target vacuum storage tank pressure according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, regulating the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference according to the initial storage tank pressure difference and the target storage tank pressure difference, and regulating the rotation speed of the pump to the target rotation speed under the condition of keeping the balloon counterpulsation pump in the aorta to normally work after the pressure in the vacuum storage tank and the pressure difference between the vacuum storage tank and the high-pressure storage tank tend to be stable. The invention can respectively regulate and control the pressure of the vacuum storage tank and the high-pressure storage tank to proper pressure, thereby improving the use stability of each tank.

Description

Driving pressure control method, device, equipment and storage medium

Technical Field

The invention relates to the technical field of aortic balloon counterpulsation pumps with double proportional valves, in particular to a driving pressure control method, a driving pressure control device, driving pressure control equipment and a storage medium.

Background

At present, a common technical scheme of the intra-aortic balloon counterpulsation pump is as follows: the air pump pressurizes and vacuumizes the two pressure storage tanks respectively, the air circuit of the driving end alternately generates positive pressure by alternately opening the two electromagnetic valves, and the pressure of the driving end is conducted to the balloon end through the soft membrane. Thereby driving the gas inside the balloon to alternately achieve the effect of balloon inflation or balloon deflation.

The pressure of the high-pressure storage tank and the vacuum storage tank needs to be maintained in a relatively stable range, and only the high-low pressure difference can be controlled by adjusting the rotation speed of the pump, but the pressure of the two pressure storage tanks cannot be independently regulated and controlled, so that the problem of out-of-control or insufficient pressure in a single storage tank can be caused.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a driving pressure control method which can respectively regulate and control the pressure of a vacuum storage tank and a high-pressure storage tank to proper pressure so as to improve the use stability of each tank.

The invention also provides a driving pressure control device.

The invention also proposes a computer readable storage medium.

In a first aspect, an embodiment of the present invention provides a driving pressure control method applied to an intra-aortic balloon counterpulsation pump including: the driving pressure control method comprises the following steps of:

adjusting the rotation speed of the pump according to a pre-acquired pump rotation speed parameter so as to establish the pressure in the vacuum storage tank to the initial vacuum storage tank pressure and establish the pressure difference between the vacuum storage tank and the high-pressure storage tank to the initial storage tank pressure difference;

the opening degree of the vacuum proportional valve is adjusted according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure so as to regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure;

the opening degree of the high-pressure proportional valve is adjusted according to the initial storage tank pressure difference and the target storage tank pressure difference so as to regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference;

and if the pressure in the vacuum storage tank and the pressure difference between the vacuum storage tank and the high-pressure storage tank tend to be stable, regulating the rotating speed of the pump to the target rotating speed under the condition of keeping the normal operation of the balloon counterpulsation pump in the aorta.

The driving pressure control method of the embodiment of the invention has at least the following beneficial effects: obtaining parameters related to the rotation speed adjustment of a pump, obtaining parameters of the rotation speed of the pump, adjusting the initial rotation speed of the pump according to the parameters of the rotation speed of the pump, adjusting the rotation speed of the pump to the corresponding initial rotation speed of the pump, further establishing initial pressure in a vacuum storage tank, adjusting the pressure in the vacuum storage tank to the initial vacuum storage tank pressure, establishing the initial pressure in the high-pressure storage tank, adjusting the pressure difference between the vacuum storage tank and the high-pressure storage tank to the pressure difference of the initial storage tank, adjusting the opening of a vacuum proportional valve within a preset opening range of the vacuum proportional valve according to the pressure of the initial vacuum storage tank and the pressure difference of the target vacuum storage tank, adjusting the opening of the high-pressure proportional valve within a preset opening range of the high-pressure proportional valve according to the pressure difference of the initial storage tank and the pressure difference of the target storage tank, reducing the rotation speed of the pump to the minimum under the condition that the pressure in the vacuum storage tank and the pressure difference of the high-pressure storage tank tend to be stable, and the balloon in the vacuum storage tank is kept to work in reverse, and the rotation speed of the pump is reduced to the minimum. The rotation speed of the pump is regulated through the rotation speed parameter of the pump so as to establish the initial vacuum storage tank pressure in the vacuum storage tank, establish the initial storage tank pressure difference between the vacuum storage tank and the high-pressure storage tank, regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference according to the initial storage tank pressure difference and the target storage tank pressure difference, and respectively regulate and control the pressure of the vacuum storage tank and the high-pressure storage tank to proper pressure, so that the use stability of each tank is improved. And regulating and controlling the pump rotation speed to be as low as possible according to the initial storage tank pressure difference, the target storage tank pressure difference, the absolute opening position of the current high-pressure proportional valve and the absolute opening position of the current vacuum proportional valve, so that the stability of the pressure in the vacuum storage tank and the high-pressure storage tank is improved under the working condition of the air pump rotation speed which is as low as possible.

According to other embodiments of the present invention, the driving pressure control method adjusts the opening degree of the vacuum proportional valve according to the initial vacuum tank pressure and the target vacuum tank pressure to regulate the pressure in the vacuum tank to the target vacuum tank pressure, including:

comparing the initial vacuum storage tank pressure with a preset pressure range;

if the initial vacuum storage tank pressure is not in the preset pressure range, acquiring the current opening of the vacuum proportional valve to obtain the opening of the initial vacuum proportional valve;

and adjusting the opening of the vacuum proportional valve according to the opening of the initial vacuum proportional valve and the opening range of the preset vacuum proportional valve so as to regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure.

According to other embodiments of the present invention, the preset pressure range includes: the vacuum storage tank pressure lower limit value, the preset vacuum proportional valve opening range comprises: the vacuum proportional valve opening lower limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and the preset vacuum proportional valve opening range, and the method comprises the following steps:

if the initial vacuum storage tank pressure is smaller than the vacuum storage tank pressure lower limit value, the pressure rising rate of the vacuum storage tank is larger than a first pressure change rate threshold value, and the opening of the vacuum proportional valve is larger than the vacuum proportional valve opening lower limit value, adjusting steps according to a preset first pressure adjusting amplitude, and reducing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the vacuum proportional valve opening lower limit value;

If the pressure rising rate is between the first pressure change rate threshold value and the second pressure change rate threshold value, not adjusting the opening of the vacuum proportional valve;

if the pressure rising rate is smaller than the second pressure change rate threshold, the absolute value of the pressure rising rate is smaller than a third pressure change rate threshold, and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is smaller than a pressure difference threshold, adjusting the step according to a preset second pressure adjusting amplitude, and increasing the opening of the vacuum proportional valve;

and if the pressure rising rate is smaller than the second pressure change rate threshold value, and the absolute value of the pressure rising rate is not smaller than the third pressure change rate threshold value or the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is not smaller than the pressure difference threshold value, adjusting the step according to a preset third pressure adjusting amplitude, and increasing the opening of the vacuum proportional valve.

According to other embodiments of the present invention, the preset pressure range includes: the vacuum storage tank pressure upper limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and a preset vacuum proportional valve opening range, and the vacuum storage tank pressure upper limit value further comprises:

If the initial vacuum storage tank pressure is larger than the vacuum storage tank pressure upper limit value and the pressure drop rate of the vacuum storage tank is larger than a fourth pressure change rate threshold value, adjusting stepping according to a preset fourth pressure adjusting amplitude, and increasing the opening of the vacuum proportional valve;

if the pressure drop rate is between the fourth pressure change rate threshold value and the fifth pressure change rate threshold value, not adjusting the opening of the vacuum proportional valve;

if the pressure drop rate is smaller than the fourth pressure change rate threshold, the absolute value of the pressure drop rate is smaller than a sixth pressure change rate threshold, and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is smaller than the pressure difference threshold, adjusting the step according to a preset fifth pressure adjusting amplitude, and reducing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the lower limit value of the opening of the vacuum proportional valve;

and if the pressure drop rate is smaller than the fifth pressure change rate threshold, and the absolute value of the pressure drop rate is not smaller than the sixth pressure change rate threshold or the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is not smaller than the pressure difference threshold, adjusting the step according to a preset sixth pressure adjusting amplitude, and increasing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the lower limit value of the opening of the vacuum proportional valve.

According to other embodiments of the present invention, the driving pressure control method adjusts the opening degree of the high pressure proportional valve according to the initial tank pressure difference and the target tank pressure difference to adjust the pressure difference between the vacuum tank and the high pressure tank to the target tank pressure difference, including:

comparing the initial storage tank pressure difference with a preset positive pressure difference range;

if the initial storage tank pressure difference is not in the preset positive pressure difference range, acquiring the current opening of the high-pressure proportional valve to obtain the opening of the initial high-pressure proportional valve;

and adjusting the opening of the high-pressure proportional valve according to the opening of the initial high-pressure proportional valve and the opening range of the preset high-pressure proportional valve so as to regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference.

According to other embodiments of the present invention, the preset positive pressure differential range includes: the positive pressure differential pressure upper limit value, the preset high pressure proportional valve opening range comprises: the opening lower limit value of the high-pressure proportional valve, the opening of the high-pressure proportional valve is adjusted according to the initial high-pressure proportional valve opening and a preset high-pressure proportional valve opening range, and the method comprises the following steps:

If the initial storage tank pressure difference is larger than the positive pressure difference upper limit value, the pressure difference reduction rate between the vacuum storage tank and the high pressure storage tank is larger than a first pressure difference change rate threshold value, and the opening of the high pressure proportional valve is larger than the high pressure proportional valve opening lower limit value, adjusting the step according to a preset first pressure difference adjusting amplitude, and reducing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the vacuum proportional valve opening lower limit value;

if the differential pressure reduction rate is between the first differential pressure change rate threshold value and the second differential pressure change rate threshold value, not adjusting the opening of the high-pressure proportional valve;

if the pressure difference reduction rate is smaller than the second pressure difference change rate threshold, the absolute value of the pressure difference reduction rate is smaller than a third pressure difference change rate threshold, and the absolute value of the difference between the initial storage tank pressure difference and the target storage tank pressure difference is smaller than a pressure difference threshold, adjusting the step according to a preset second pressure difference adjustment amplitude, and increasing the opening of the high-pressure proportional valve;

if the pressure difference decreasing rate is smaller than the second pressure difference changing rate threshold, and the absolute value of the pressure difference decreasing rate is not smaller than the third pressure difference changing rate threshold or the absolute value of the difference between the initial storage tank pressure difference and the target storage tank pressure difference is not smaller than the pressure difference threshold, adjusting the step according to the preset third pressure difference adjusting amplitude, and increasing the opening of the high-pressure proportional valve.

According to other embodiments of the present invention, the preset positive pressure differential range includes: the positive pressure differential pressure lower limit value, the opening of the high pressure proportional valve is adjusted according to the opening of the initial high pressure proportional valve and the opening range of the preset high pressure proportional valve, and the method further comprises the following steps:

if the initial storage tank pressure difference is smaller than the positive pressure difference lower limit value, and the pressure difference rising rate is larger than a fourth pressure difference change rate threshold value, adjusting stepping according to a preset fourth pressure difference adjusting amplitude, and increasing the opening of the high-pressure proportional valve;

if the pressure difference rising rate is between the fourth pressure difference change rate threshold value and the fifth pressure difference change rate threshold value, the opening degree of the high-pressure proportional valve is not adjusted;

if the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold, the absolute value of the pressure difference rising rate is smaller than the sixth pressure difference change rate threshold, and the absolute value of the difference between the initial storage tank pressure difference and the target storage tank pressure difference is smaller than the pressure difference threshold, adjusting the step according to a preset fifth pressure difference adjusting amplitude, and reducing the opening of the high-pressure proportional valve until the opening of the high-pressure proportional valve is adjusted to the opening lower limit value of the high-pressure proportional valve;

If the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold, and the absolute value of the pressure difference rising rate is not smaller than the sixth pressure difference change rate threshold or the absolute value of the difference between the initial storage tank pressure difference and the target storage tank pressure difference is not smaller than the pressure difference threshold, adjusting the step according to a preset sixth pressure difference adjusting amplitude, and reducing the opening of the high-pressure proportional valve until the opening of the high-pressure proportional valve is adjusted to the opening lower limit value of the high-pressure proportional valve.

According to the driving pressure control method of other embodiments of the present invention, the preset air pump rotation speed range includes: the air pump rotational speed upper limit value and the air pump rotational speed lower limit value, the rotational speed of adjusting the pump to target rotational speed includes:

if the initial storage tank pressure difference is within the preset positive pressure difference range, acquiring the current rotation speed of the pump to obtain the rotation speed of an initial air pump;

in a preset time, if the average pressure difference between the vacuum storage tank and the high-pressure storage tank is larger than the positive pressure difference lower limit value, the opening of the initial high-pressure proportional valve and the opening of the initial vacuum proportional valve are both larger than a preset threshold value, and the rotating speed of the pump is reduced until the rotating speed of the pump reaches the air pump rotating speed lower limit value;

And in the preset time, if the average pressure difference between the vacuum storage tank and the high-pressure storage tank is smaller than the positive pressure difference lower limit value, increasing the rotating speed of the pump until the rotating speed upper limit value of the air pump is reached.

In a second aspect, one embodiment of the present invention provides a driving pressure control device applied to an intra-aortic balloon counterpulsation pump including: the driving pressure control method comprises the following steps of:

the tank internal pressure building module is used for adjusting the rotation speed of the pump according to the pre-acquired pump rotation speed parameter so as to build the pressure in the vacuum storage tank to the initial vacuum storage tank pressure and build the pressure difference between the vacuum storage tank and the high-pressure storage tank to the initial storage tank pressure difference;

the vacuum proportional valve regulating and controlling module is used for regulating the opening of the vacuum proportional valve according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure so as to regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure;

the high-pressure proportional valve regulating and controlling module is used for regulating the opening of the high-pressure proportional valve according to the initial storage tank pressure difference and the target storage tank pressure difference so as to regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference;

And the pump rotating speed adjusting module is used for adjusting the rotating speed of the pump to the target rotating speed under the condition of keeping the normal operation of the balloon counterpulsation pump in the aorta after the rotating speed of the pump tends to be stable due to the pressure in the vacuum storage tank and the pressure difference between the vacuum storage tank and the high-pressure storage tank.

The driving pressure control device provided by the embodiment of the invention has at least the following beneficial effects: the method comprises the steps that a tank internal pressure building module obtains parameters related to rotation speed adjustment of a pump to obtain pump rotation speed parameters, initial rotation speed of the pump is adjusted according to the pump rotation speed parameters, the rotation speed of the pump is adjusted to be corresponding to the initial rotation speed of the pump, initial pressure in a vacuum storage tank is built, the pressure in the vacuum storage tank is adjusted to be initial vacuum storage tank pressure, initial pressure in a high-pressure storage tank is built, the pressure difference between the vacuum storage tank and the high-pressure storage tank is adjusted to be initial storage tank pressure difference, the opening of a vacuum proportional valve is adjusted and controlled within a preset vacuum proportional valve opening range according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, the opening of the high-pressure proportional valve is adjusted and controlled within a preset high-pressure proportional valve opening range according to the initial storage tank pressure difference and the target storage tank pressure difference, the pump rotation speed is adjusted and controlled by a pump rotation speed adjusting module within a control error range of the pressure difference between the vacuum storage tank and the high-pressure storage tank, the pressure difference between the vacuum storage tank and the high-pressure storage tank tends to be stable, and the main valve can be reduced to a normal rotation speed after the pressure in the vacuum storage tank and the main valve reaches a target rotation speed, and the main pump rotation speed can be reduced as far as possible. The rotation speed of the pump is regulated through the rotation speed parameter of the pump so as to establish the initial vacuum storage tank pressure in the vacuum storage tank, establish the initial storage tank pressure difference between the vacuum storage tank and the high-pressure storage tank, regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference according to the initial storage tank pressure difference and the target storage tank pressure difference, and respectively regulate and control the pressure of the vacuum storage tank and the high-pressure storage tank to proper pressure, so that the use stability of each tank is improved. And regulating and controlling the pump rotation speed to be as low as possible according to the initial storage tank pressure difference, the target storage tank pressure difference, the absolute opening position of the current high-pressure proportional valve and the absolute opening position of the current vacuum proportional valve, so that the stability of the pressure in the vacuum storage tank and the high-pressure storage tank is improved under the working condition of the air pump rotation speed which is as low as possible.

In a third aspect, an embodiment of the present invention provides a driving pressure control apparatus including:

at least one processor, and,

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the driving pressure control method as described in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the driving pressure control method according to the first aspect.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a flow chart of a driving pressure control method according to an embodiment of the invention;

FIG. 2 is a flowchart of step S102 in FIG. 1;

FIG. 3 is a flowchart illustrating the step S203 in FIG. 2;

FIG. 4 is a flowchart of another embodiment of step S203 in FIG. 2;

FIG. 5 is a flowchart of step S103 in FIG. 1;

FIG. 6 is a flowchart of step S503 in FIG. 5;

FIG. 7 is a flowchart of another embodiment of step S503 in FIG. 5;

FIG. 8 is a block diagram of an embodiment of a driving pressure control device according to an embodiment of the present invention;

FIG. 9 is a flowchart of step S104 in FIG. 1;

FIG. 10 is a schematic view of an embodiment of an intra-aortic balloon counterpulsation pump according to an embodiment of the present invention;

FIG. 11 is a schematic view of another embodiment of an intra-aortic balloon counterpulsation pump according to an embodiment of the present invention;

FIG. 12 is a diagram of an embodiment of the influence relationship of factors in an embodiment of the present invention;

FIG. 13 is a flow chart of another embodiment of a driving pressure control method according to an embodiment of the present invention;

FIG. 14 is a flow chart of another embodiment of a driving pressure control method according to the present invention.

Reference numerals illustrate:

a tank internal pressure establishing module 801, a vacuum proportional valve regulating module 802, a high-pressure proportional valve regulating module 803 and a pump rotating speed regulating module 804.

Detailed Description

The conception and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments below to fully understand the objects, features and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, if an orientation description such as "upper", "lower", "front", "rear", "left", "right", etc. is referred to, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" on another feature, it can be directly disposed, secured, or connected to the other feature or be indirectly disposed, secured, connected, or mounted on the other feature.

In the description of the embodiments of the present invention, if "several" is referred to, it means more than one, if "multiple" is referred to, it is understood that the number is not included if "greater than", "less than", "exceeding", and it is understood that the number is included if "above", "below", "within" is referred to. If reference is made to "first", "second" it is to be understood as being used for distinguishing technical features and not as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

According to different required balloon auxiliary action frequencies and the filling degree required by each auxiliary, filling and contraction time changes. The consumption of the pressure storage in the high-pressure and vacuum storage tanks is dynamically changed in the action process of the balloon, and the pressure shortage or the surplus defect is caused by driving the high-pressure and vacuum storage tanks at the fixed rotation speed of the air pump.

Referring to fig. 1, fig. 1 is a flow chart illustrating a driving pressure control method according to an embodiment of the invention. In some embodiments, applied to an intra-aortic balloon counterpulsation pump, the intra-aortic balloon counterpulsation pump comprising: pumps, vacuum reservoirs, high pressure reservoirs, vacuum proportional valves, and high pressure proportional valves, the driving pressure control method may include, but is not limited to including, steps S101 to S104.

Step S101, adjusting the rotation speed of a pump according to a pump rotation speed parameter obtained in advance so as to establish the pressure in a vacuum storage tank to the pressure of an initial vacuum storage tank and establish the pressure difference between the vacuum storage tank and a high-pressure storage tank to the pressure difference of the initial storage tank;

Step S102, the opening degree of a vacuum proportional valve is adjusted according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure so as to regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure;

step S103, the opening degree of the high-pressure proportional valve is adjusted according to the initial storage tank pressure difference and the target storage tank pressure difference so as to regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference;

step S104, if the pressure in the vacuum storage tank and the pressure difference between the vacuum storage tank and the high-pressure storage tank tend to be stable, the rotating speed of the pump is adjusted to the target rotating speed under the condition of keeping the normal operation of the balloon counterpulsation pump in the aorta.

In the steps S101 to S104 illustrated in the embodiments of the present application, parameters related to rotation speed adjustment of a pump are obtained, pump rotation speed parameters are obtained, the initial rotation speed of the pump is adjusted according to the pump rotation speed parameters, so that the rotation speed of the pump is adjusted to a corresponding initial rotation speed of the pump, and then initial pressure in a vacuum storage tank is established, so that the pressure in the vacuum storage tank is adjusted to the initial vacuum storage tank pressure, and initial pressure in the high-pressure storage tank is established, so that the pressure difference between the vacuum storage tank and the high-pressure storage tank is adjusted to an initial storage tank pressure difference, the opening of a vacuum proportional valve is adjusted and controlled within a preset vacuum proportional valve opening range according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, so that the pressure in the vacuum storage tank reaches within a preset high-pressure proportional valve opening range, the pressure difference between the vacuum storage tank and the high-pressure storage tank reaches within a control error range of the target vacuum storage tank pressure difference, after the vacuum storage tank and the high-pressure storage tank tend to be stabilized, the pump rotation speed is reduced to a minimum under the conditions that the balloon rotation speed is reduced, and the rotation speed of the pump is reduced to a normal speed. The rotation speed of the pump is regulated through the rotation speed parameter of the pump so as to establish the initial vacuum storage tank pressure in the vacuum storage tank, establish the initial storage tank pressure difference between the vacuum storage tank and the high-pressure storage tank, regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference according to the initial storage tank pressure difference and the target storage tank pressure difference, and respectively regulate and control the pressure of the vacuum storage tank and the high-pressure storage tank to proper pressure, so that the use stability of each tank is improved. And regulating and controlling the pump rotation speed to be as low as possible according to the initial storage tank pressure difference, the target storage tank pressure difference, the absolute opening position of the current high-pressure proportional valve and the absolute opening position of the current vacuum proportional valve, so that the stability of the pressure in the vacuum storage tank and the high-pressure storage tank is improved under the working condition of the air pump rotation speed which is as low as possible.

The target vacuum storage tank pressure is set by a doctor according to the physiological requirement of a patient and is preset in a control system of the intra-aortic balloon counterpulsation pump, in addition, the target vacuum storage tank pressure is also determined according to the performance of the intra-aortic balloon counterpulsation pump, and influencing factors comprise the thickness of a diaphragm, the length of a trachea of the system, the normal value of the pressure in a balloon and the coefficient of the balloon. Wherein the target vacuum reservoir pressure affects the pressure within the balloon such that the balloon is fully contracted.

The initial pressure difference of the storage tank is the initial pressure difference between the vacuum storage tank and the high-pressure storage tank after the rotating speed of the pump is regulated. The target storage tank pressure difference is a target pressure difference to be regulated between the vacuum storage tank and the high-pressure storage tank, the target storage tank pressure difference can be a pressure difference range, and after the opening degree of the high-pressure proportional valve is regulated, the final pressure difference between the vacuum storage tank and the high-pressure storage tank is realized.

The final purpose of the internal pressure regulation of the intra-aortic balloon counterpulsation pump is to stabilize high pressure and negative pressure, so as to provide a power source for balloon expansion and contraction. There are various factors that affect the positive and negative pressure inside the instrument. Referring to fig. 12, fig. 12 is a schematic diagram showing the influence relationship of each factor in the embodiment of the present invention. In the figure "+" indicates that an increase in the physical quantity at the start point of the arrow causes an increase in the physical quantity at the end point of the arrow. In the figure "-" indicates that an increase in the arrow start point physical quantity results in a decrease in the arrow end point physical quantity. For example, adjusting the rotational speed of the pump affects both the pressure differential between the vacuum reservoir and the high pressure reservoir, the pressure of the vacuum reservoir, as if the rotational speed of the pump were increased, the pressure within the vacuum reservoir was decreased, and the pressure differential between the vacuum reservoir and the high pressure reservoir was increased; correspondingly, the opening degree of the vacuum proportional valve is adjusted to influence the pressure of the vacuum storage tank.

In some embodiments, the pressure inside the vacuum storage tank is determined by the vacuum proportional valve opening, the rotational speed of the pump, and the negative pressure gas consumption. The gas consumption is a multi-factor affected variable which cannot be actively regulated and controlled due to the multi-factor influence of the heart rate of the patient, the pressure difference between the vacuum storage tank and the high-pressure storage tank, the inflation and deflation time length and the like, but can be considered to be stable in a certain time period and can be predicted through the heart rate of the patient and the auxiliary frequency. In this case, the main way of regulating the pressure is to regulate the opening of the vacuum proportional valve and the rotational speed of the pump to match the pressure gas consumption, so as to achieve a stable pressure.

In some embodiments, the pressure inside the high pressure tank is determined by the pressure in the vacuum tank, the opening of the high pressure proportional valve, the rotational speed of the pump, and the positive pressure gas consumption. Therefore, the main mode of regulating and controlling the high pressure is to regulate the opening of the vacuum proportional valve, the opening of the high pressure proportional valve and the rotating speed of the pump to match the consumption of the high pressure gas, thereby achieving stable high pressure.

（1）

The above formula (1) shows the variation of the mass of the gas in the tank during the pressure regulation,for supplying or extracting the gas to or from the tank per unit time by the pump, wherein +_in the high-pressure tank >For the supply to be positive, the vacuum reservoir is filled with +.>The extraction amount is negative. />Is the consumption of gas in the tank in unit time during operation, wherein the high-pressure storage tank is +.>Is negative, inside the vacuum tank->Positive value, can be considered +.>Is stable. />The control quantity of the proportional valve to the tank gas in unit time is that ∈10 in the high-pressure storage tank>Is negative, inside the vacuum tank->Positive values. Wherein->The dissipated gas is made superfluous by means of an air pump>To ensure, too high +.>The air pump can work at a higher rotating speed, so that the energy consumption noise is increased, and the service life of the device is reduced. />The value of the sum of the first three variables reflects the pressure change relationship. When->When the value is positive, it is expressed as an increase in can pressure, when +.>When the value is negative, it is shown that the can pressure is reduced, when +.>At a value of 0, the pressure in the can was unchanged. Therefore, when the pressure in the can is insufficient, it is necessary to make +.>Positive values. When the pressure in the tank is too high, it is necessary to make +.>Is negative. When the pressure in the can is regulated to a desired pressure, it is necessary to make +.>Is 0.

Can be regulated by regulating the opening of the proportional valve, when the opening of the vacuum proportional valve and the opening of the high-pressure proportional valve are gradually increased, the air pressure value inside the vacuum proportional valve gradually approaches to the atmosphere And (5) pressing value. Regulating the rotation speed of the pump can influence the negative pressure and the positive pressure difference, regulating the opening of the vacuum proportional valve can influence the negative pressure, and regulating the opening of the high-pressure proportional valve can influence the positive pressure difference. In addition, a->The rotation speed of the air pump can be adjusted by adjusting.

In step S101 of some embodiments, in the pressure regulation process, in order to better match the actual requirements, a simplification of the tri-variable pressure control scheme is required to some extent. The rotational speed of the pump has a certain relation with the gas consumption, i.e. the pump rotational speed parameter is determined by at least one of the heart rate of the patient, the blood pressure of the patient, the settings of the doctor and nurse, etc., and remains stable for a certain period of time. Therefore, the three-variable pressure regulation model can be simplified into a double-variable pressure regulation model, and the rotating speed of the air pump is optimized. Namely, the rotating speed of the pump can be controlled in an open loop by the heart rate of the patient and the auxiliary frequency, and the requirement of gas consumption is met through actual measurement and empirical data. The fixed rotational speed is required to ensure that the rotational speed is suitable and that there is a large redundancy to allow for adjustment of the proportional valve, i.e., to ensure that the proportional valve is between 30% and 60% open, although this is not a limitation. After the rotation speed is fixed, the pressure of the vacuum storage tank is controlled through the opening variable of the vacuum proportional valve, and the pressure difference of the high-pressure storage tank is controlled through the opening variable of the high-pressure proportional valve. Finally, after the differential pressure reaches the standard, the rotating speed of the air pump is further tried to be reduced until the high-pressure and low-pressure proportional valve is closed as much as possible. The absolute value is as small as possible, and the waste of the energy of the air pump is reduced.

Referring to fig. 2, fig. 2 is a flow chart illustrating a driving pressure control method according to an embodiment of the invention. In some embodiments, adjusting the opening of the vacuum proportional valve to regulate the pressure within the vacuum tank to the target vacuum tank pressure based on the initial vacuum tank pressure and the target vacuum tank pressure may include, but is not limited to including, steps S201 through S203.

Step S201, comparing the initial vacuum storage tank pressure with a preset pressure range;

step S202, if the pressure of the initial vacuum storage tank is not in a preset pressure range, acquiring the current opening of the vacuum proportional valve to obtain the opening of the initial vacuum proportional valve;

and step S203, adjusting the opening of the vacuum proportional valve according to the opening of the initial vacuum proportional valve and the opening range of the preset vacuum proportional valve so as to regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure.

In step S201 to step S203 illustrated in the embodiment of the present application, by comparing the initial vacuum tank pressure with the maximum limit value and the minimum limit value of the preset pressure range, if the initial vacuum tank pressure is smaller than the minimum limit value of the preset pressure range, or if the initial vacuum tank pressure is greater than the maximum limit value of the preset pressure range, the current opening of the vacuum proportional valve is obtained, the opening of the initial vacuum proportional valve is compared with the maximum limit value and the minimum limit value of the opening range of the preset vacuum proportional valve, and the opening of the vacuum proportional valve is adjusted according to the comparison result, so that the pressure in the vacuum tank is adjusted and controlled to the target vacuum tank pressure. If the pressure of the initial vacuum storage tank exceeds the preset pressure range, the current opening of the initial vacuum proportional valve of the vacuum proportional valve is obtained, the pressure in the vacuum storage tank is regulated and controlled to the target vacuum storage tank pressure according to the opening of the initial vacuum proportional valve and the preset opening range of the vacuum proportional valve, the pressure of the vacuum storage tank can be regulated and controlled to the proper pressure, and the use stability of the vacuum storage tank is further improved.

Referring to fig. 3 and 13, fig. 3 is a schematic flow chart of a driving pressure control method according to an embodiment of the invention, and fig. 13 is a schematic flow chart of a driving pressure control method according to an embodiment of the invention. In some embodiments, the preset pressure range includes: the vacuum storage tank pressure lower limit value, the preset vacuum proportional valve opening range comprises: the vacuum proportional valve opening lower limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and the preset vacuum proportional valve opening range, and may include, but is not limited to, steps S301 to S304.

Step S301, if the initial vacuum storage tank pressure is smaller than the vacuum storage tank pressure lower limit value, the pressure rising rate of the vacuum storage tank is larger than the first pressure change rate threshold value, and the opening of the vacuum proportional valve is larger than the vacuum proportional valve opening lower limit value, adjusting the step according to the preset first pressure adjusting amplitude, and reducing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the vacuum proportional valve opening lower limit value;

step S302, if the pressure rising rate is between the first pressure change rate threshold value and the second pressure change rate threshold value, the opening degree of the vacuum proportional valve is not adjusted;

step S303, if the pressure rising rate is smaller than the second pressure change rate threshold, the absolute value of the pressure rising rate is smaller than the third pressure change rate threshold, and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is smaller than the pressure difference threshold, adjusting the step according to the preset second pressure adjustment amplitude, and increasing the opening of the vacuum proportional valve;

Step S304, if the pressure rising rate is smaller than the second pressure change rate threshold, and the absolute value of the pressure rising rate is not smaller than the third pressure change rate threshold or the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is not smaller than the pressure difference threshold, the step is adjusted according to the preset third pressure adjustment amplitude, and the opening degree of the vacuum proportional valve is increased.

In the steps S301 to S304 illustrated in the embodiments of the present application, if the initial vacuum tank pressure is smaller than the vacuum tank pressure lower limit value, the pressure rise rate of the vacuum tank is larger than the first pressure change rate threshold value, and the opening of the vacuum proportional valve is larger than the vacuum proportional valve opening lower limit value, the step is adjusted according to the preset first pressure adjustment amplitude, the opening of the vacuum proportional valve is reduced until the opening of the vacuum proportional valve is adjusted to the vacuum proportional valve opening lower limit value, if the pressure rise rate is between the first pressure change rate threshold value and the second pressure change rate threshold value, the opening of the vacuum proportional valve is not adjusted, if the pressure rise rate is smaller than the second pressure change rate threshold value, the absolute value of the pressure rise rate is smaller than the third pressure change rate threshold value, and if the absolute value of the pressure rise rate is smaller than the third pressure change rate threshold value or the absolute value of the target vacuum tank pressure is smaller than the pressure difference threshold value, the vacuum proportional valve is adjusted according to the preset second pressure adjustment amplitude, and if the absolute value of the difference between the pressure rise rate and the initial vacuum tank pressure is smaller than the target vacuum tank pressure is smaller than the pressure difference threshold value, the vacuum tank is adjusted accordingly.

The rate of pressure rise during the pressure rise in the vacuum tank is represented as a positive number, and the rate of pressure rise during the pressure fall in the vacuum tank is represented as a negative number. The first pressure change rate threshold, the second pressure change rate threshold, and the third pressure change rate threshold are unsigned numbers representing absolute values of change rates during both rising and falling pressures.

The relationship of the first pressure change rate threshold, the second pressure change rate threshold, and the third pressure change rate threshold is such that the first pressure change rate threshold is greater than the second pressure change rate threshold, and the second pressure change rate threshold is greater than the third pressure change rate threshold.

The first amplitude in fig. 13 is a first pressure adjustment amplitude, the second amplitude in fig. 13 is a second pressure adjustment amplitude, and the third amplitude in fig. 13 is a third pressure adjustment amplitude. The relationship of the first pressure regulating amplitude, the second pressure regulating amplitude and the third pressure regulating amplitude is that the stepping first pressure regulating amplitude is smaller than the third pressure regulating amplitude, and the second pressure regulating amplitude is smaller than the third pressure regulating amplitude.

Referring to fig. 4 and 13, fig. 4 is a flow chart illustrating a driving pressure control method according to an embodiment of the invention. In some embodiments, the preset pressure range includes: the vacuum tank pressure upper limit value, the opening degree of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening degree and the preset vacuum proportional valve opening degree range, and the method can further comprise, but is not limited to, steps S401 to S404.

Step S401, if the pressure of the initial vacuum storage tank is greater than the upper limit value of the pressure of the vacuum storage tank and the pressure drop rate of the vacuum storage tank is greater than the fourth pressure change rate threshold value, adjusting the step according to the preset fourth pressure adjustment amplitude, and increasing the opening of the vacuum proportional valve;

step S402, if the pressure drop rate is between the fourth pressure change rate threshold value and the fifth pressure change rate threshold value, the opening degree of the vacuum proportional valve is not adjusted;

step S403, if the pressure drop rate is smaller than the fifth pressure change rate threshold, the absolute value of the pressure drop rate is smaller than the sixth pressure change rate threshold, and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is smaller than the pressure difference threshold, adjusting the step according to the preset fifth pressure adjustment amplitude, and reducing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the lower limit value of the opening of the vacuum proportional valve;

and step S404, if the pressure drop rate is smaller than the fifth pressure change rate threshold value, and the absolute value of the pressure drop rate is not smaller than the sixth pressure change rate threshold value or the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure is not smaller than the pressure difference threshold value, adjusting the step according to the preset sixth pressure adjustment amplitude, and increasing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the lower limit value of the opening of the vacuum proportional valve.

In the steps S401 to S404 illustrated in the embodiments of the present application, if the initial vacuum tank pressure is greater than the upper limit value of the vacuum tank pressure and the pressure drop rate of the vacuum tank is greater than the fourth pressure change rate threshold value, the step is adjusted according to the preset fourth pressure adjustment amplitude, the opening of the vacuum proportional valve is increased, if the pressure drop rate is between the fourth pressure change rate threshold value and the fifth pressure change rate threshold value, the opening of the vacuum proportional valve is not adjusted, if the pressure drop rate is less than the fifth pressure change rate threshold value, the absolute value of the pressure drop rate is less than the sixth pressure change rate threshold value, and the absolute value of the difference between the initial vacuum tank pressure and the target vacuum tank pressure is less than the pressure difference threshold value, the step is adjusted according to the preset fifth pressure adjustment amplitude, the opening of the vacuum proportional valve is reduced until the opening of the vacuum proportional valve is adjusted to the lower limit value, and if the pressure drop rate is less than the fifth pressure change rate threshold value, and the absolute value of the pressure drop rate is not less than the sixth pressure change rate threshold value or the absolute value of the difference between the initial vacuum tank pressure and the target vacuum tank pressure is not less than the preset pressure change rate threshold value, the vacuum valve is adjusted until the vacuum proportional valve is increased, and the vacuum valve is adjusted to the vacuum stability.

The rate of pressure drop during the pressure drop in the vacuum tank is represented as a positive number, and the rate of pressure drop during the pressure rise in the vacuum tank is represented as a negative number.

The relationship of the fourth pressure change rate threshold, the fifth pressure change rate threshold, and the sixth pressure change rate threshold is such that the fourth pressure change rate threshold is greater than the fifth pressure change rate threshold, and the fifth pressure change rate threshold is greater than the sixth pressure change rate threshold.

The fourth amplitude in fig. 13 is the fourth pressure adjustment amplitude, the fifth amplitude in fig. 13 is the fifth pressure adjustment amplitude, and the sixth amplitude in fig. 13 is the sixth pressure adjustment amplitude. The fourth pressure regulating amplitude, the fifth pressure regulating amplitude and the sixth pressure regulating amplitude are related in such a way that the fourth pressure regulating amplitude is smaller than the sixth pressure regulating amplitude in a stepping way, and the fifth pressure regulating amplitude is smaller than the sixth pressure regulating amplitude.

In the working process of the balloon counterpulsation pump in the aorta, the high-pressure proportional valve and the vacuum proportional valve are frequently and alternately opened and closed, so that the air pressure in the high-pressure storage tank and the air pressure in the vacuum storage tank are changed at the moment. Because the tank volume is a constant, the pressure in the tank immediately before the proportional valve opens is considered to represent the driving capability of the high pressure/vacuum gas in the tank to the driving end, and is a pressure variable to be controlled. In some embodiments, it may be desirable to first adjust the vacuum proportional valve so that the vacuum pressure falls within a suitable pressure range, and then adjust the high pressure proportional valve so that the high pressure is within a suitable pressure range.

In the adjusting process, if the pressure is found to be smaller than the requirement, the opening of the vacuum proportional valve is smaller than the lower limit value of the opening of the vacuum proportional valve, and the rotating speed of the pump in the scene needs to be increased, so that the vacuum proportional valve has a regulating and controlling space. Similarly, if the pressure is found to be greater than the demand, the opening of the vacuum proportional valve is greater than the upper limit value of the opening of the vacuum proportional valve, and the rotation speed of the pump needs to be reduced in the scene, so that the vacuum proportional valve has a regulating space. Through the adjustment, the pressure in the tank can be kept in a certain range stably, and the negative pressure of the instrument can be adjusted through software according to actual conditions.

In some embodiments, the vacuum tank proportional valve opening is adjusted according to a set pressure threshold of the vacuum tank. And adjusting the pressure of the vacuum storage tank to the target vacuum storage tank pressure by adjusting the opening degree of the vacuum proportional valve.

The proportional valve adjustment of the vacuum storage tank comprises:

when the initial vacuum storage tank pressure is smaller than the vacuum storage tank pressure lower limit value and the pressure rising rate is larger than the first pressure change rate threshold value, determining a reduction value of the proportional valve opening of the vacuum storage tank according to the absolute value of the pressure rising rate.

When the initial vacuum storage tank pressure is smaller than the vacuum storage tank pressure lower limit value, if the pressure rising rate is smaller than the first pressure change rate threshold value and the pressure rising rate is larger than the second pressure change rate threshold value, the opening degree of the proportional valve of the vacuum storage tank is not adjusted.

When the initial vacuum storage tank pressure is smaller than the vacuum storage tank pressure lower limit value, if the pressure rising rate is smaller than the second pressure change rate threshold value, and the absolute value of the pressure rising rate is smaller than the third pressure change rate threshold value, determining the increasing value of the proportional valve opening of the vacuum storage tank according to the absolute value of the pressure rising rate and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure.

And when the pressure of the initial vacuum storage tank is smaller than the lower limit value of the pressure of the vacuum storage tank, and if the pressure rising rate is smaller than the second pressure change rate threshold value, the absolute value of the pressure rising rate is not smaller than the third pressure change rate threshold value, and the increasing value of the opening degree of the proportional valve of the vacuum storage tank is determined according to the absolute value of the pressure rising rate and the absolute value of the difference between the pressure of the initial vacuum storage tank and the pressure of the target vacuum storage tank.

When the initial vacuum storage tank pressure is larger than the upper limit value of the vacuum storage tank pressure and the pressure drop rate is larger than the fourth pressure change rate threshold value, determining the increasing value of the opening of the proportional valve of the vacuum storage tank according to the absolute value of the pressure drop rate.

When the initial vacuum storage tank pressure is larger than the upper limit value of the vacuum storage tank pressure, if the pressure drop rate is smaller than the fourth pressure change rate threshold value and the pressure drop rate is larger than the fifth pressure change rate threshold value, the opening degree of the proportional valve of the vacuum storage tank is not adjusted.

When the initial vacuum storage tank pressure is larger than the upper limit value of the vacuum storage tank pressure, if the pressure drop rate is smaller than the fifth pressure change rate threshold value, and the absolute value of the pressure drop rate is smaller than the sixth pressure change rate threshold value, determining the reduction value of the proportional valve opening of the vacuum storage tank according to the absolute value of the pressure rise rate and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure.

When the initial vacuum storage tank pressure is larger than the upper limit value of the vacuum storage tank pressure, if the pressure drop rate is smaller than the fifth pressure change rate threshold value, and the absolute value of the pressure drop rate is not smaller than the sixth pressure change rate threshold value, determining the increasing value of the proportional valve opening of the vacuum storage tank according to the absolute value of the pressure rise rate and the absolute value of the difference between the initial vacuum storage tank pressure and the target vacuum storage tank pressure.

Referring to fig. 5, fig. 5 is a flow chart illustrating a driving pressure control method according to an embodiment of the invention. In some embodiments, adjusting the opening of the high pressure proportional valve to regulate the pressure differential between the vacuum tank and the high pressure tank to the target tank pressure differential may include, but is not limited to including, step S501 to step S503, based on the initial tank pressure differential and the target tank pressure differential of the high pressure proportional valve.

Step S501, if the initial vacuum storage tank pressure is within a preset pressure range, comparing the initial storage tank pressure difference with a preset positive pressure difference range;

step S502, if the initial storage tank pressure difference is not in the preset positive pressure difference range, acquiring the current opening of the high-pressure proportional valve to obtain the opening of the initial high-pressure proportional valve;

step S503, adjusting the opening of the high-pressure proportional valve according to the opening of the initial high-pressure proportional valve and the opening range of the preset high-pressure proportional valve so as to regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference.

In the steps S501 to S503 illustrated in the embodiments of the present application, the initial vacuum tank pressure is compared with the maximum limit value and the minimum limit value of the preset pressure range, if the initial vacuum tank pressure is greater than the minimum limit value of the preset pressure range and the initial vacuum tank pressure is less than the maximum limit value of the preset pressure range, the initial tank pressure difference is compared with the maximum limit value and the minimum limit value of the preset positive pressure difference range, if the initial tank pressure difference is less than the minimum limit value of the preset positive pressure difference range and the initial tank pressure difference is greater than the maximum limit value of the preset positive pressure difference range, the current opening of the high pressure proportional valve is obtained, the initial high pressure proportional valve opening is obtained, the maximum limit value and the minimum limit value of the opening range of the initial high pressure proportional valve are compared, and the opening of the high pressure proportional valve is adjusted according to the comparison result, so that the pressure difference between the vacuum tank and the high pressure tank is adjusted to the target tank pressure difference. The pressure of the vacuum storage tank and the pressure of the high-pressure storage tank are regulated and controlled to be the target storage tank pressure difference according to the opening of the initial high-pressure proportional valve and the opening range of the preset high-pressure proportional valve, the pressure of the high-pressure storage tank can be regulated and controlled to be proper pressure, and the use stability of the high-pressure storage tank is further improved.

It should be noted that if the initial vacuum tank pressure is within the preset pressure range and the initial tank pressure difference is within the preset positive pressure difference range, the regulation is ended.

Referring to fig. 6 and 14, fig. 6 is a schematic flow chart of a driving pressure control method according to an embodiment of the invention, and fig. 14 is a schematic flow chart of a driving pressure control method according to an embodiment of the invention. In some embodiments, the predetermined positive pressure differential range comprises: the positive pressure differential pressure upper limit value, the preset high pressure proportional valve opening range comprises: adjusting the opening of the high pressure proportional valve according to the initial high pressure proportional valve opening and the preset high pressure proportional valve opening range may include, but is not limited to including, steps S601 to S604.

Step S601, if the initial storage tank pressure difference is larger than the positive pressure difference upper limit value, the pressure difference reduction rate between the vacuum storage tank and the high pressure storage tank is larger than the first pressure difference change rate threshold value, and the opening of the high pressure proportional valve is larger than the opening lower limit value of the high pressure proportional valve, adjusting the step according to the preset first pressure difference adjustment amplitude, and reducing the opening of the vacuum proportional valve until the opening of the vacuum proportional valve is adjusted to the opening lower limit value of the vacuum proportional valve;

Step S602, if the differential pressure drop rate is between the first differential pressure change rate threshold value and the second differential pressure change rate threshold value, the opening degree of the high-pressure proportional valve is not adjusted;

step S603, if the pressure difference decreasing rate is smaller than the second pressure difference changing rate threshold, the absolute value of the pressure difference decreasing rate is smaller than the third pressure difference changing rate threshold, and the absolute value of the difference between the pressure difference of the initial storage tank and the pressure difference of the target storage tank is smaller than the pressure difference threshold, adjusting the step according to the preset second pressure difference adjusting amplitude, and increasing the opening of the high-pressure proportional valve;

step S604, if the differential pressure drop rate is smaller than the second differential pressure change rate threshold, and the absolute value of the differential pressure drop rate is not smaller than the third differential pressure change rate threshold or the absolute value of the difference between the differential pressure of the initial storage tank and the differential pressure of the target storage tank is not smaller than the differential pressure difference threshold, adjusting the step according to the preset third differential pressure adjustment amplitude, and increasing the opening of the high-pressure proportional valve.

In the steps S601 to S604 illustrated in the embodiments of the present application, if the initial storage tank differential pressure is greater than the positive pressure differential pressure upper limit value, the differential pressure drop rate between the vacuum storage tank and the high pressure storage tank is greater than the first differential pressure change rate threshold value, and the opening of the high pressure proportional valve is greater than the high pressure proportional valve opening lower limit value, the step is adjusted according to the preset first differential pressure adjustment amplitude, the opening of the vacuum proportional valve is reduced until the opening of the vacuum proportional valve is adjusted to the vacuum proportional valve opening lower limit value, if the differential pressure drop rate is between the first differential pressure change rate threshold value and the second differential pressure change rate threshold value, the opening of the high pressure proportional valve is not adjusted, if the differential pressure drop rate is less than the second differential pressure change rate threshold value, and the absolute value of the differential pressure drop rate is less than the third differential pressure change rate threshold value, and the absolute value of the differential pressure difference between the initial storage tank and the target storage tank is less than the differential pressure difference threshold value, the opening of the high pressure proportional valve is adjusted according to the preset second differential pressure, if the differential pressure drop rate is not less than the third differential pressure change rate threshold value, and the differential pressure is not adjusted, and the differential pressure is high.

The pressure difference increase rate during the pressure difference increase between the vacuum tank and the high-pressure tank is represented as a positive number, and the pressure difference increase rate during the pressure difference decrease between the vacuum tank and the high-pressure tank is represented as a negative number. The first differential pressure change rate threshold value, the second differential pressure change rate threshold value and the third differential pressure change rate threshold value are unsigned numbers, and represent absolute values of change rates of differential pressure in the rising process and the falling process.

The relationship among the first differential pressure change rate threshold value, the second differential pressure change rate threshold value and the third differential pressure change rate threshold value is that the first differential pressure change rate threshold value is larger than the second differential pressure change rate threshold value, and the second differential pressure change rate threshold value is larger than the third differential pressure change rate threshold value.

The first amplitude in fig. 13 is the first differential pressure adjustment amplitude, the second amplitude in fig. 13 is the second differential pressure adjustment amplitude, and the third amplitude in fig. 13 is the third differential pressure adjustment amplitude. The relation among the first differential pressure regulating amplitude, the second differential pressure regulating amplitude and the third differential pressure regulating amplitude is that the stepping first differential pressure regulating amplitude is smaller than the third differential pressure regulating amplitude, and the second differential pressure regulating amplitude is smaller than the third differential pressure regulating amplitude.

The target storage tank pressure difference is set by a doctor according to the physiological requirement of a patient and is preset in a control system of the intra-aortic balloon counterpulsation pump, in addition, the target storage tank pressure difference is determined according to the performance of the intra-aortic balloon counterpulsation pump, and influencing factors comprise the thickness of a diaphragm, the length of a trachea of the system, the normal value of the pressure in the balloon and the coefficient of the balloon. Wherein the target reservoir pressure differential affects the positive pressure within the balloon such that the balloon is fully inflated.

Referring to fig. 7 and 14, fig. 7 is a flow chart illustrating a driving pressure control method according to an embodiment of the invention. In some embodiments, the predetermined positive pressure differential range comprises: the positive pressure differential pressure lower limit value, and adjusting the opening of the high pressure proportional valve according to the initial high pressure proportional valve opening and the preset high pressure proportional valve opening range further includes, but is not limited to, steps S701 to S704.

Step S701, if the initial storage tank pressure difference is smaller than the positive pressure difference lower limit value and the pressure difference rising rate is larger than the fourth pressure difference change rate threshold value, adjusting the step according to the preset fourth pressure difference adjusting amplitude, and increasing the opening of the high-pressure proportional valve;

step S702, if the differential pressure rising rate is between the fourth differential pressure change rate threshold value and the fifth differential pressure change rate threshold value, the opening degree of the high-pressure proportional valve is not adjusted;

step S703, if the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold, the absolute value of the pressure difference rising rate is smaller than the sixth pressure difference change rate threshold, and the absolute value of the difference between the pressure difference of the initial storage tank and the pressure difference of the target storage tank is smaller than the pressure difference threshold, adjusting the step according to the preset fifth pressure difference adjustment amplitude, and reducing the opening of the high-pressure proportional valve until the opening of the high-pressure proportional valve is adjusted to the lower limit value of the opening of the high-pressure proportional valve;

Step S704, if the differential pressure rising rate is smaller than the fifth differential pressure change rate threshold, and the absolute value of the differential pressure rising rate is not smaller than the sixth differential pressure change rate threshold or the absolute value of the difference between the differential pressure of the initial storage tank and the differential pressure of the target storage tank is not smaller than the differential pressure difference threshold, adjusting the step according to the preset sixth differential pressure adjustment amplitude, and reducing the opening of the high-pressure proportional valve until the opening of the high-pressure proportional valve is adjusted to the lower limit value of the opening of the high-pressure proportional valve.

In the steps S701 to S704 illustrated in the embodiments of the present application, if the pressure difference of the initial storage tank is smaller than the lower limit value of the positive pressure differential, the pressure difference rising rate is larger than the fourth pressure difference change rate threshold value, then the opening of the high pressure proportional valve is increased according to the preset fourth pressure difference adjustment step, if the pressure difference rising rate is between the fourth pressure difference change rate threshold value and the fifth pressure difference change rate threshold value, then the opening of the high pressure proportional valve is not adjusted, if the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold value, and the absolute value of the pressure difference rising rate is smaller than the sixth pressure difference change rate threshold value, and the absolute value of the difference between the pressure difference of the initial storage tank and the target storage tank is smaller than the pressure difference threshold value, then the opening of the high pressure proportional valve is adjusted according to the preset fifth pressure difference adjustment step, the opening of the high pressure proportional valve is reduced until the opening of the high pressure proportional valve is adjusted to the lower limit value, if the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold value, and if the absolute value of the pressure difference rising rate is not smaller than the sixth pressure difference change rate threshold value, then the opening of the high pressure proportional valve is adjusted until the opening of the pressure valve is increased by the preset, and the opening of the pressure valve is adjusted to the high.

The relationship among the fourth pressure difference change rate threshold value, the fifth pressure difference change rate threshold value, and the sixth pressure difference change rate threshold value is that the fourth pressure difference change rate threshold value is greater than the fifth pressure difference change rate threshold value, and the fifth pressure difference change rate threshold value is greater than the sixth pressure difference change rate threshold value. The preset positive pressure differential range is a range of differential pressure between a preset vacuum storage tank and a high-pressure storage tank, the preset positive pressure differential range comprises a positive pressure differential upper limit value and a positive pressure differential lower limit value, the positive pressure differential upper limit value is the upper limit value of the preset positive pressure differential range, and the positive pressure differential lower limit value is the lower limit value of the preset positive pressure differential range.

The fourth amplitude in fig. 14 is the fourth differential pressure adjustment amplitude, the fifth amplitude in fig. 14 is the fifth differential pressure adjustment amplitude, and the sixth amplitude in fig. 14 is the sixth differential pressure adjustment amplitude. The fourth differential pressure regulating amplitude, the fifth differential pressure regulating amplitude and the sixth differential pressure regulating amplitude are related in such a way that the fourth differential pressure regulating amplitude is smaller than the sixth differential pressure regulating amplitude in a stepping way, and the fifth differential pressure regulating amplitude is smaller than the sixth differential pressure regulating amplitude.

In the adjusting process, if the positive pressure is found to be smaller than the requirement, the opening of the high-pressure proportional valve is smaller than the lower limit value of the opening of the high-pressure proportional valve, and the rotating speed of the pump in the scene needs to be increased, so that the high-pressure proportional valve has an adjusting and controlling space. Similarly, if the positive pressure is found to be greater than the demand, the opening of the high-pressure proportional valve is greater than the upper limit value of the opening of the high-pressure proportional valve, and the rotation speed of the pump needs to be reduced in the scene, so that the high-pressure proportional valve has a regulating space. Through the adjustment, the pressure in the tank can be kept in a certain range stably, and meanwhile, the positive pressure of the instrument can be adjusted through software according to actual conditions.

In some embodiments, the opening of the high pressure tank proportioning valve is adjusted according to a threshold value of a pressure differential between the set high pressure tank and the vacuum tank. And adjusting the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference by adjusting the opening degree of the high-pressure proportional valve.

The proportional valve adjustment of the high pressure tank includes:

when the initial storage tank pressure difference is larger than the positive pressure difference upper limit value and the pressure difference reduction rate is larger than the first pressure difference change rate threshold value, determining the reduction value of the opening of the proportional valve of the high-pressure storage tank according to the absolute value of the pressure difference reduction rate.

When the initial storage tank pressure difference is larger than the positive pressure difference upper limit value, if the pressure difference reduction rate is smaller than the first pressure difference change rate threshold value, and the pressure difference reduction rate is larger than the second pressure difference change rate threshold value, the opening degree of the proportional valve of the high-pressure storage tank is not adjusted.

When the pressure difference of the initial storage tank is larger than the positive pressure difference upper limit value, if the pressure difference falling rate is smaller than the second pressure difference change rate threshold value, and the absolute value of the pressure difference falling rate is smaller than the third pressure difference change rate threshold value, determining the increasing value of the opening degree of the proportional valve of the high-pressure storage tank according to the absolute value of the pressure difference falling rate and the absolute value of the difference between the pressure difference of the initial storage tank and the pressure difference of the target storage tank.

When the pressure difference of the initial storage tank is larger than the positive pressure difference upper limit value, if the pressure difference reduction rate is smaller than the second pressure difference change rate threshold value, and the absolute value of the pressure difference reduction rate is not smaller than the third pressure difference change rate threshold value, determining the increasing value of the opening degree of the proportional valve of the high-pressure storage tank according to the absolute value of the pressure difference reduction rate and the absolute value of the difference between the pressure difference of the initial storage tank and the pressure difference of the target storage tank.

When the pressure difference of the initial storage tank is smaller than the lower limit value of the positive pressure difference and the pressure difference rising rate is larger than the fourth pressure difference change rate threshold value, determining the increasing value of the opening of the proportional valve of the high-pressure storage tank according to the absolute value of the pressure difference rising rate.

When the pressure difference of the initial storage tank is smaller than the lower limit value of the positive pressure difference, if the pressure difference rising rate is smaller than the fourth pressure difference change rate threshold value, and the pressure difference rising rate is larger than the fifth pressure difference change rate threshold value, the opening degree of the proportional valve of the high-pressure storage tank is not adjusted.

When the pressure difference of the initial storage tank is smaller than the lower limit value of the positive pressure difference, if the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold value, and the absolute value of the pressure difference rising rate is smaller than the sixth pressure difference change rate threshold value, determining the reduction value of the opening degree of the proportional valve of the high-pressure storage tank according to the absolute value of the pressure difference rising rate and the absolute value of the difference between the pressure difference of the initial storage tank and the pressure difference of the target storage tank.

When the pressure difference of the initial storage tank is smaller than the lower limit value of the positive pressure difference, if the pressure difference rising rate is smaller than the fifth pressure difference change rate threshold value, and the absolute value of the pressure difference rising rate is not smaller than the sixth pressure difference change rate threshold value, determining the reduction value of the opening of the proportional valve of the high-pressure storage tank according to the absolute value of the pressure difference rising rate and the absolute value of the difference between the pressure difference of the initial storage tank and the pressure difference of the target storage tank.

Referring to fig. 9, fig. 9 is a flow chart illustrating a driving pressure control method according to an embodiment of the invention. In some embodiments, the preset air pump speed range includes: the air pump rotation speed upper limit value and the air pump rotation speed lower limit value, and adjusting the rotation speed of the pump to the target rotation speed includes, but is not limited to, including step S901 to step S903.

Step S901, if the pressure difference of the initial storage tank is within the preset positive pressure difference range, the current rotating speed of the pump is obtained, and the rotating speed of the initial air pump is obtained;

step S902, if the average pressure difference between the vacuum storage tank and the high-pressure storage tank is larger than the positive pressure difference lower limit value within the preset time, the opening of the initial high-pressure proportional valve and the opening of the initial vacuum proportional valve are both larger than the preset threshold value, and the rotation speed of the pump is reduced until the rotation speed lower limit value of the air pump is reached;

in step S903, if the average pressure difference between the vacuum tank and the high-pressure tank is smaller than the lower limit value of the positive pressure difference in the preset time, the rotation speed of the pump is increased until the upper limit value of the rotation speed of the air pump is reached.

In step S901 to step S903 illustrated in this embodiment, if the pressure difference of the initial storage tank is within the preset positive pressure difference range, the current rotation speed of the pump is obtained, so as to obtain the rotation speed of the initial air pump, and in the preset time, if the average pressure difference between the vacuum storage tank and the high-pressure storage tank is greater than the positive pressure difference lower limit value, the opening of the initial high-pressure proportional valve and the opening of the initial vacuum proportional valve are both greater than the preset threshold value, the rotation speed of the pump is reduced to the air pump rotation speed lower limit value, and in the preset time, if the average pressure difference between the vacuum storage tank and the high-pressure storage tank is less than the positive pressure difference lower limit value, the rotation speed of the pump is increased to the air pump rotation speed upper limit value.

In some embodiments, if the initial vacuum proportional valve opening is less than the vacuum proportional valve opening lower limit, the rotational speed of the pump is increased, and if the initial vacuum proportional valve opening is greater than the vacuum proportional valve opening upper limit, the rotational speed of the pump is decreased, and the rotational speed of the pump can be further adjusted to adjust the rotational speed of the pump to a suitable range.

In some embodiments, if the initial high pressure proportional valve opening is less than the high pressure proportional valve opening lower limit, the rotational speed of the pump is increased, and if the initial high pressure proportional valve opening is greater than the high pressure proportional valve opening upper limit, the rotational speed of the pump is decreased, and the rotational speed of the pump can be further adjusted to adjust the rotational speed of the pump to a suitable range.

In some embodiments, referring to fig. 10, fig. 10 shows a schematic diagram of an intra-aortic balloon counterpulsation pump in accordance with an embodiment of the present invention. The single proportional valve scheme includes regulation of the proportional valve in combination with the back pressure valve. The vacuum storage tank is provided with a proportional valve combined with a pressure acquisition unit, the pressure is regulated and controlled in a negative feedback mode, and the high-pressure storage tank is provided with a back pressure valve and the pressure acquisition unit. For example, when the pressure in the vacuum storage tank is too high, besides reducing the rotation speed of the pump, the opening of the proportional valve at the vacuum storage tank can be increased, the flow communication between the vacuum storage tank and the atmospheric environment is increased, so that the pressure in the vacuum storage tank is reduced, and the back pressure valve is still used at the high-pressure storage tank for pressure regulation. Besides, under the condition of insufficient pressure in the high-pressure storage tank, the pressure in the high-pressure storage tank can be increased by increasing the rotation speed of the lifting pump and the opening of the proportional valve of the vacuum storage tank and the air inflow of the system, and the pressure of the vacuum storage tank can still be kept unchanged. Similarly, when the pressure in the high-pressure storage tank is too high, the pressure in the vacuum storage tank can be kept unchanged by simultaneously adjusting the rotation speeds of the vacuum proportional valve and the pump, and the pressure in the high-pressure storage tank is reduced to a proper range.

In some embodiments, referring to fig. 11, fig. 11 shows a schematic diagram of an intra-aortic balloon counterpulsation pump in accordance with an embodiment of the present invention. The pressure regulation scheme of the high pressure and the vacuum can be the pressure regulation scheme of the double proportional valve. The vacuum storage tank and the high-pressure storage tank are connected with proportional valves to replace back pressure valves, and the proportional valves are combined with the pressure acquisition unit to comprehensively regulate and control the pressure of the two tanks. For example, when the pressure difference between the vacuum tank and the high-pressure tank is too high, in addition to changing the rotation speed of the pump, the pressure difference between the vacuum tank and the high-pressure tank can be reduced by increasing the opening of the proportional valve at the high-pressure tank, so that the pressure of the high-pressure tank can be reduced.

In some embodiments, when the blood pressure of the patient is relatively high, the intra-aortic balloon counterpulsation pump needs to provide a more practical auxiliary effect in the situation, and at this time, the rotation speed of the pump can be increased, and the opening degrees of the vacuum proportional valve and the high-pressure proportional valve can be adjusted. The pressure difference between the vacuum storage tank and the high-pressure storage tank is simply increased, and the situation that the exhaust speed is slower can occur, so that the opening degree of the vacuum proportional valve also needs to meet the actual situation and is adjusted by combining the rotating speed of the pump, the pressure in the vacuum storage tank is reduced, and the negative influence of the lifting pressure on the exhaust time is counteracted.

In some embodiments, the intra-aortic balloon counterpulsation pump is required to provide a more realistic assistance effect when the patient's blood pressure is relatively low. In the pressure regulating scheme of the double proportional valve, the following measures need to be taken: the rotation speed of the pump is reduced, the opening degrees of the vacuum proportional valve and the high-pressure proportional valve are adjusted simultaneously, so that the pressure in the vacuum storage tank is increased, the pressure in the high-pressure storage tank is reduced, and the actual requirements are adjusted and matched by combining the rotation speed of the pump.

In some embodiments, in the case of battery powered and not easily replenished, the intra-aortic balloon counterpulsation pump will use its own battery to ensure its proper operation, where reducing the overall energy consumption of the system is necessary for long-term assistance. In order to achieve the effect of low-power-consumption operation of the instrument, the rotation speed of the pump can be reduced, meanwhile, the opening degree of the two proportional valves is reduced, and the instrument is replaced by a longer battery service life on the basis of sacrificing the system performance as little as possible.

In some embodiments, the balloon filling degree is controlled in an auxiliary way by improving the high pressure during inflation, the pressure of the high-pressure storage tank and the vacuum storage tank is regulated and controlled finely by increasing the rotation speed of the pump and then by assisting the proportional valve, and the conditions that the high pressure or vacuum is out of control and the corresponding balloon is not completely deflated due to the increase of the rotation speed of the pump in the traditional scheme are avoided, so that the instrument performance is fully ensured.

In some embodiments, the balloon is fully deflated by reducing the negative pressure in the vacuum storage tank in the late deflation state, the vacuum storage tank is enabled to obtain lower pressure by reducing the opening of the vacuum proportional valve, the deflation speed can be ensured to be faster, the balloon is contracted more fully, and a better auxiliary effect is achieved.

In some embodiments, when the instrument has a gas leakage condition, the opening degree of the high-pressure proportional valve can be reduced to compensate when the pneumatic performance related to the high pressure is reduced due to the gas leakage; when the vacuum-related aerodynamic performance parameter is reduced due to air leakage, the opening degree of the vacuum proportional valve can be reduced to compensate. In the general air leakage condition, the compensation of the proportional valve can ensure that the instrument can return to the original normal performance.

In some embodiments, when the performance of the pump component is reduced after long-term use, the rotation speed of the pump is increased, and then the opening of the high-pressure proportional valve and the opening of the vacuum proportional valve are regulated in a combined way, so that the positive pressure and the negative pressure are both in a required reasonable range, and the original normal performance of the pump can be guaranteed.

In some embodiments, the need exists for an instrument that can be self-tested on start-up, and that can be maintained by passing high pressure into the high pressure tank, looking at its rate of decline over time, to characterize the gas tightness of the high pressure tank body. Similarly, the air tightness of the vacuum storage tank body can be characterized by vacuumizing the vacuum storage tank to maintain the vacuum storage tank and looking at the reduction rate of the vacuum storage tank along with time.

In some embodiments, the intra-aortic balloon counterpulsation pump further comprises: the system comprises a pressure storage container, a positive and negative pressure source, a pressure measurement acquisition assembly, a proportional valve and a back pressure valve assembly, wherein the pressure storage container is used for storing pressure. The positive and negative pressure source is used for providing positive and negative pressure components. The pressure measurement acquisition assembly is used for measuring the pressure in the container. The proportional valve changes the pressure difference between the container and the outside through an electric control mode to regulate the pressure in the container. The back pressure valve component is a manual pressure regulating component, and the internal pressure of the container is regulated and controlled by manually controlling the pressure difference between the container and the outside.

The vacuum proportional valve regulates the vacuum storage tank pressure, and the high-pressure proportional valve regulates the high-pressure storage tank pressure. Or the vacuum proportional valve regulates and controls the pressure of the vacuum storage tank body, and the back pressure valve regulates and controls the pressure of the high-pressure storage tank body; or the high-pressure proportional valve regulates and controls the pressure of the high-pressure storage tank body, and the back pressure valve regulates and controls the gas path structure of the pressure of the vacuum storage tank body.

In some embodiments, the pressure acquisition and measurement assembly obtains the internal pressure of the container, regulates and controls the rotation speed of the pump and the opening degree of the proportional valve in a software mode, and can obtain stable positive pressure or negative pressure meeting the requirement.

In some embodiments, when the intra-aortic balloon counterpulsation pump has no external power supply input, in order to ensure that the patient can be assisted for a long time, the medical staff is allowed to set the intra-aortic balloon counterpulsation pump into a low-power consumption mode, in which the rotation speed of the pump can be reduced, and the opening degrees of the vacuum proportional valve and the high-pressure proportional valve can be reduced in a matching way, so that the long-time assisted treatment is ensured at the cost of slightly losing the performance of the intra-aortic balloon counterpulsation pump.

In addition, the embodiment of the present application also discloses a driving pressure control device, please refer to fig. 8, fig. 8 is a block diagram of a driving pressure control device according to an embodiment of the present invention. The driving pressure control device can realize the driving pressure control method, and is applied to an intra-aortic balloon counterpulsation pump, and the intra-aortic balloon counterpulsation pump comprises: pump, vacuum storage tank, high-pressure storage tank, vacuum proportional valve and high-pressure proportional valve, driving pressure controlling means includes: the tank internal pressure building module 801, the vacuum proportional valve regulating module 802, the high-pressure proportional valve regulating module 803 and the pump rotating speed regulating module 804 are all in communication connection.

The in-tank pressure establishing module 801 adjusts the rotational speed of the pump according to the pre-acquired pump rotational speed parameter to establish the pressure in the vacuum tank to the initial vacuum tank pressure and to establish the pressure differential between the vacuum tank and the high-pressure tank to the initial tank pressure differential. The vacuum proportional valve regulation module 802 regulates the opening of the vacuum proportional valve according to the initial vacuum tank pressure and the target vacuum tank pressure to regulate the pressure in the vacuum tank to the target vacuum tank pressure. The high-pressure proportional valve regulating module 803 regulates the opening of the high-pressure proportional valve according to the initial tank pressure difference and the target tank pressure difference to regulate the pressure difference between the vacuum tank and the high-pressure tank to the target tank pressure difference. If the pressure in the vacuum storage tank and the pressure difference between the vacuum storage tank and the high-pressure storage tank tend to be stable, the pump rotation speed adjusting module 804 adjusts the rotation speed of the pump to the target rotation speed under the condition of keeping the normal operation of the balloon counterpulsation pump in the aorta.

The driving pressure control device provided by the embodiment of the invention has at least the following beneficial effects: the tank internal pressure establishing module 801 obtains parameters related to the rotation speed adjustment of the pump, obtains pump rotation speed parameters, adjusts the initial rotation speed of the pump according to the pump rotation speed parameters, adjusts the rotation speed of the pump to the corresponding initial rotation speed of the pump, further establishes initial pressure in the vacuum storage tank, enables the pressure in the vacuum storage tank to be adjusted to the initial vacuum storage tank pressure, establishes initial pressure in the high-pressure storage tank, enables the pressure difference between the vacuum storage tank and the high-pressure storage tank to be adjusted to the initial storage tank pressure, enables the opening of the vacuum proportional valve to be adjusted and controlled within a control error range of the vacuum proportional valve according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, enables the pressure in the vacuum storage tank to reach the control error range of the pressure difference between the target vacuum storage tank and the high-pressure storage tank according to the initial storage tank pressure and the target storage tank pressure, enables the high-pressure proportional valve 803 to be adjusted and controlled within a control error range of the opening of the high-pressure proportional valve according to the initial storage tank pressure difference and the target storage tank pressure, enables the pump rotation speed to be reduced to be stable under the condition that the rotation speed of the pump is kept to be the lowest, and the rotation speed of the pump can be reduced to the normal condition after the initial rotation speed reaches the target rotation speed. The rotation speed of the pump is regulated through the rotation speed parameter of the pump so as to establish the initial vacuum storage tank pressure in the vacuum storage tank, establish the initial storage tank pressure difference between the vacuum storage tank and the high-pressure storage tank, regulate and control the pressure in the vacuum storage tank to the target vacuum storage tank pressure according to the initial vacuum storage tank pressure and the target vacuum storage tank pressure, regulate and control the pressure difference between the vacuum storage tank and the high-pressure storage tank to the target storage tank pressure difference according to the initial storage tank pressure difference and the target storage tank pressure difference, and respectively regulate and control the pressure of the vacuum storage tank and the high-pressure storage tank to proper pressure, so that the use stability of each tank is improved. And regulating and controlling the pump rotation speed to be as low as possible according to the initial storage tank pressure difference, the target storage tank pressure difference, the absolute opening position of the current high-pressure proportional valve and the absolute opening position of the current vacuum proportional valve, so that the stability of the pressure in the vacuum storage tank and the high-pressure storage tank is improved under the working condition of the air pump rotation speed which is as low as possible.

The operation of the driving pressure control device of the present embodiment specifically refers to the driving pressure control method steps S101 to S104, S201 to S203, S301 to S304, S401 to S404, S501 to S503, S601 to S604, S701 to S704, and S901 to 903 in the above-described fig. 1, 2, 3, 4, 5, 6, 7, and 9, and is not repeated here.

Another embodiment of the present invention discloses a driving pressure control apparatus including: at least one processor, and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to enable the at least one processor to perform the driving pressure control method as in the control method steps S101 to S104 in fig. 1, the control method steps S201 to S203 in fig. 2, the control method steps S301 to S304 in fig. 3, the control method steps S401 to S404 in fig. 4, the control method steps S501 to S503 in fig. 5, the control method steps S601 to S604 in fig. 6, the control method steps S701 to S704 in fig. 7, and the control method steps S901 to S903 in fig. 9.

Another embodiment of the present invention discloses a computer-readable storage medium, the storage medium comprising: the storage medium stores computer-executable instructions for causing a computer to execute the control method steps S101 to S104 in fig. 1, the control method steps S201 to S203 in fig. 2, the control method steps S301 to S304 in fig. 3, the control method steps S401 to S404 in fig. 4, the control method steps S501 to S503 in fig. 5, the control method steps S601 to S604 in fig. 6, the control method steps S701 to S704 in fig. 7, and the driving pressure control method steps S901 to S903 in fig. 9.

The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A driving pressure control device, characterized by being applied to an intra-aortic balloon counterpulsation pump, the intra-aortic balloon counterpulsation pump comprising: pump, vacuum storage tank, high-pressure storage tank, vacuum proportional valve and high-pressure proportional valve, driving pressure controlling means includes:

and the pump rotating speed adjusting module is used for adjusting the rotating speed of the pump to the target rotating speed under the condition of keeping the normal operation of the balloon counterpulsation pump in the aorta after the pressure in the vacuum storage tank and the pressure difference between the vacuum storage tank and the high-pressure storage tank tend to be stable.

2. A driving pressure control apparatus, characterized by comprising:

at least one processor, and,

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a driving pressure control method comprising:

the driving pressure control method is applied to an intra-aortic balloon counterpulsation pump, and the intra-aortic balloon counterpulsation pump comprises: the driving pressure control method comprises the following steps of:

3. The driving pressure control apparatus according to claim 2, wherein the adjusting the opening degree of the vacuum proportional valve according to the initial vacuum tank pressure and the target vacuum tank pressure to regulate the pressure in the vacuum tank to the target vacuum tank pressure includes:

4. A driving pressure control apparatus as claimed in claim 3, wherein the preset pressure range includes: the vacuum storage tank pressure lower limit value, the preset vacuum proportional valve opening range comprises: the vacuum proportional valve opening lower limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and the preset vacuum proportional valve opening range, and the method comprises the following steps:

5. The driving pressure control apparatus according to claim 4, wherein the preset pressure range includes: the vacuum storage tank pressure upper limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and a preset vacuum proportional valve opening range, and the vacuum storage tank pressure upper limit value further comprises:

6. The driving pressure control apparatus according to claim 2, the adjusting the opening degree of the high-pressure proportional valve according to the initial tank pressure difference and the target tank pressure difference to regulate the pressure difference between the vacuum tank and the high-pressure tank to the target tank pressure difference, comprising:

7. The driving pressure control apparatus according to claim 6, wherein the preset positive pressure differential range includes: the positive pressure differential pressure upper limit value, the preset high pressure proportional valve opening range comprises: the opening lower limit value of the high-pressure proportional valve, the opening of the high-pressure proportional valve is adjusted according to the initial high-pressure proportional valve opening and a preset high-pressure proportional valve opening range, and the method comprises the following steps:

8. The driving pressure control apparatus according to claim 7, wherein the preset positive pressure differential range includes: the positive pressure differential pressure lower limit value, the opening of the high pressure proportional valve is adjusted according to the opening of the initial high pressure proportional valve and the opening range of the preset high pressure proportional valve, and the method further comprises the following steps:

9. The driving pressure control apparatus according to claim 8, wherein the preset air pump rotation speed range includes: the air pump rotational speed upper limit value and the air pump rotational speed lower limit value, the rotational speed of adjusting the pump to target rotational speed includes:

10. A computer-readable storage medium storing computer-executable instructions for causing a computer to execute a driving pressure control method of:

11. The computer readable storage medium of claim 10, wherein said adjusting the opening of the vacuum proportional valve based on the initial vacuum tank pressure and a target vacuum tank pressure to regulate the pressure within the vacuum tank to the target vacuum tank pressure comprises:

12. The computer readable storage medium of claim 11, wherein the preset pressure range comprises: the vacuum storage tank pressure lower limit value, the preset vacuum proportional valve opening range comprises: the vacuum proportional valve opening lower limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and the preset vacuum proportional valve opening range, and the method comprises the following steps:

13. The computer readable storage medium of claim 12, wherein the preset pressure range comprises: the vacuum storage tank pressure upper limit value, the opening of the vacuum proportional valve is adjusted according to the initial vacuum proportional valve opening and a preset vacuum proportional valve opening range, and the vacuum storage tank pressure upper limit value further comprises:

14. The computer readable storage medium of claim 10, wherein the adjusting the opening of the high pressure proportional valve according to the initial tank differential pressure and the target tank differential pressure to regulate the differential pressure between the vacuum tank and the high pressure tank to the target tank differential pressure comprises:

15. The computer readable storage medium of claim 14, wherein the predetermined positive pressure differential range comprises: the positive pressure differential pressure upper limit value, the preset high pressure proportional valve opening range comprises: the opening lower limit value of the high-pressure proportional valve, the opening of the high-pressure proportional valve is adjusted according to the initial high-pressure proportional valve opening and a preset high-pressure proportional valve opening range, and the method comprises the following steps:

16. The computer readable storage medium of claim 15, wherein the predetermined positive pressure differential range comprises: the positive pressure differential pressure lower limit value, the opening of the high pressure proportional valve is adjusted according to the opening of the initial high pressure proportional valve and the opening range of the preset high pressure proportional valve, and the method further comprises the following steps:

17. The computer readable storage medium of claim 16, wherein the preset air pump speed range comprises: the air pump rotational speed upper limit value and the air pump rotational speed lower limit value, the rotational speed of adjusting the pump to target rotational speed includes: