CN115068730A

CN115068730A - Medical surgical pump infusion system, method, infusion system and storage medium

Info

Publication number: CN115068730A
Application number: CN202210860483.7A
Authority: CN
Inventors: 杨韬睿; 彭名旭; 左鹏飞
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd; Wuhan Mindray Medical Technology Research Institute Co Ltd
Current assignee: Wuhan Mindray Biomedical Technology Co ltd; Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-09-20
Anticipated expiration: 2042-07-21
Also published as: CN115068730B

Abstract

The embodiment of the application provides a medical surgical pump infusion system, a method, an infusion system and a storage medium, and the system comprises: a fluid source for storing a medical fluid; a pipeline, one end of which is connected with a fluid source and the other end of which is used for flowing out medical liquid; the power mechanism is used for driving the roller to move, so that the medical liquid in the pipeline flows towards a preset direction under the action of the roller; the sensor is arranged on the flow path of the upstream pipeline and used for sensing a flow signal of the fluid at a sampling position point; the controller is used for determining the volume of the first liquid flowing out of the fluid source between the first time and the second time according to the parameters of the power mechanism and the parameters of the pipeline, and obtaining a first flow signal and a second flow signal corresponding to the first time and the second time through the sensor; according to the first liquid volume, the first flow signal and the second flow signal, the rotating speed of the power mechanism is controlled and/or alarm information is sent out, so that the operation safety is improved.

Description

Medical surgical pump infusion system, method, infusion system and storage medium

Technical Field

The application relates to the technical field of medical treatment, in particular to a medical surgical pump infusion system, a medical surgical pump infusion method, an infusion system and a storage medium.

Background

In the endoscopic surgery, the cavity is usually pressurized and expanded by using a liquid medium, so that a visible space and intra-cavity flushing are conveniently formed in the endoscopic examination and the surgery, the liquid perfusion flow is accurately regulated, the continuous perfusion is promoted, and the method is an important means for ensuring clear intra-cavity transfusion and maintaining the intra-cavity pressure.

To this, in order to avoid when continuously perfusing to the cavity, because of the residual liquid volume is not enough, and cause gas to be squeezed into the human body, and then cause the emergence of air embolism scheduling problem, the common scheme sets up total perfusion volume by medical personnel, adjusts the flow based on medical personnel's setting parameter, but this not only requires higher setting accuracy, and excessively relies on the manual work, causes the current operation security that relates to liquid perfusion not high.

Disclosure of Invention

The embodiment of the application provides a medical surgical pump infusion system, a method, an infusion system and a storage medium, which are used for monitoring the volume of residual liquid by intelligently identifying the volume of a fluid source, realizing the accurate control of liquid perfusion and finally improving the operation safety.

In a first aspect, the present application provides a medical surgical pump fluid delivery system comprising:

a fluid source for storing a medical fluid;

a pipeline, one end of which is connected with a fluid source, and medical liquid flows out from the other end of the pipeline;

the extrusion mechanism comprises a power mechanism and a roller, the pipeline is matched with the roller, and the power mechanism is used for driving the roller to move so that the medical liquid in the pipeline flows towards a preset direction under the action of the roller; wherein the pipeline is divided into an upstream pipeline and a downstream pipeline by the extrusion mechanism, and the medical liquid flows from the upstream pipeline to the downstream pipeline;

the sensor is arranged on the flow path of the upstream pipeline and used for sensing a flow signal of the corresponding fluid on the flow path at a sampling position point;

a controller, configured to: determining a first liquid volume of the medical liquid flowing out of the fluid source through the pipeline between a first time and a second time according to parameters of a power mechanism of the power mechanism and parameters of the pipeline, and obtaining flow signals corresponding to the first time and the second time respectively through a sensor;

and controlling the rotating speed of the power mechanism and/or sending alarm information according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first moment and the second moment.

In some embodiments of the present application, controlling and/or sending an alarm information on a rotation speed of the power mechanism according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time includes:

determining a second fluid volume of the medical fluid remaining in the fluid source based on the first fluid volume and the first and second flow signals;

the rotational speed of the power mechanism is controlled based on the second volume of liquid and the first and second flow signals.

determining a signal variation of the first flow signal and the second flow signal between the first time and the second time;

determining the liquid storage volume of the fluid source according to the first liquid volume and the signal variation;

and controlling the rotating speed of the power mechanism according to the liquid storage volume, the first liquid volume and the signal variation of the fluid source.

In some embodiments of the present application, the controller is further configured to: and acquiring the unit rotation number of the power mechanism, and determining the volume of the first liquid flowing out of the fluid source from the first time to the second time according to the unit rotation number of the power mechanism, the size of the roller and the size of the pipeline.

In some embodiments of the present application, the controller is further configured to: the rotational speed of the power mechanism is obtained to determine a first volume of fluid flowing from the fluid source between the first time and the second time based on the rotational speed of the power mechanism, the size of the roller, and the size of the conduit.

In some embodiments of the present application, the controller is further configured to: a first volume of fluid flowing from the fluid source between the first time and the second time is determined based on the flow rate of the medical fluid and the size of the tubing.

generating first alarm prompt information in response to a preset first alarm condition, wherein the first alarm prompt information is used for prompting that the medical liquid in the fluid source is insufficient;

the first alarm condition includes at least one of:

the first liquid volume reaches a preset first volume threshold;

determining that a second liquid volume of the medical liquid left in the fluid source reaches a preset second volume threshold according to the first liquid volume, the first flow signal and the second flow signal;

the ratio between the first liquid volume and the holding volume of the fluid source reaches a preset ratio threshold.

generating second alarm prompt information in response to a preset second alarm condition, wherein the second alarm prompt information is used for prompting that the fluid source is emptied; the second alarm condition includes at least one of:

the first liquid volume reaches a preset third volume threshold;

determining that a second liquid volume of the medical liquid left in the fluid source reaches a preset fourth volume threshold according to the first liquid volume, the first flow signal and the second flow signal;

the ratio of the difference between the first flow signal and the second flow signal to the first liquid volume satisfies a preset signal variation characteristic;

the flow signal satisfies a predetermined signal characteristic.

In some embodiments of the present application, the controller is further configured to: and controlling the power mechanism to stop driving the roller to move.

In some embodiments of the present application, the first alarm cue for indicating an insufficiency of medical fluid in the fluid source comprises visual information and/or audible information, and the second alarm cue for indicating an emptying of the fluid source comprises visual information and/or audible information;

the system further comprises: a display device and/or a broadcast device; the display device displays visual information and the broadcast device is used for expressing auditory information.

In some embodiments of the present application, the sensor comprises a pressure sensor and the flow signal comprises any one of a pressure signal, a voltage signal, a digital-to-analog signal.

In some embodiments of the present application, the first time is a starting time of the roller wheel starting to rotate or any time after the roller wheel starts to rotate, and the second time is later than the first time.

In a second aspect, the present application provides a method for delivering a fluid to a surgical pump, the method being applied to a surgical pump delivery system, the surgical pump delivery system including a fluid source, a conduit, a sensor, a controller, a power mechanism and a roller; one end of the pipeline is connected with a fluid source, medical liquid flows out from the other end of the pipeline through the pipeline, and the sensor is arranged on a flow path of the pipeline; the power mechanism is used for driving the roller to move; the controller is respectively in communication connection with the sensor and the power mechanism; a surgical pump fluid delivery method comprising:

acquiring flow signals corresponding to the first moment and the second moment respectively through a sensor;

determining, by a controller, a first fluid volume of the medical fluid flowing out of the fluid source through the tubing between the first time and the second time based on a power mechanism parameter of the power mechanism and a tubing parameter of the tubing;

and controlling the rotating speed of the power mechanism and/or sending alarm information by the controller according to the volume of the first liquid and the first flow signal and the second flow signal respectively corresponding to the first moment and the second moment.

determining a second liquid volume of the remaining medical liquid in the fluid source according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first moment and the second moment;

and controlling the rotating speed of the power mechanism and/or sending alarm information based on the volume of the second liquid and the first flow signal and the second flow signal.

determining a signal change amount between the first time and the second time based on the first time and the second time and the corresponding first flow signal and second flow signal;

and controlling the rotating speed of the power mechanism and/or sending alarm information according to the liquid storage volume, the first liquid volume and the signal variation of the fluid source.

In some embodiments of the present application, a method of determining a volume of a first liquid comprises at least one of:

acquiring the unit rotation turns of the power mechanism, and determining the volume of the first liquid according to the unit rotation turns of the power mechanism, the size of the roller and the size of the pipeline;

acquiring the rotating speed of the power mechanism to determine the volume of the first liquid according to the rotating speed of the power mechanism, the size of the roller and the size of the pipeline;

the first fluid volume is determined based on the flow rate of the medical fluid and the size of the tubing.

In some embodiments of the present application, controlling the rotation speed of the power mechanism and/or sending an alarm message includes:

generating first alarm prompt information in response to a preset first alarm condition, wherein the first alarm prompt information is used for prompting that the medical liquid in the fluid source is insufficient; the first alarm condition includes at least one of:

the first liquid volume reaches a preset first volume threshold;

the ratio of the first liquid volume to the liquid storage volume of the fluid source reaches a preset ratio threshold;

and/or

the first liquid volume reaches a preset third volume threshold;

determining that the second liquid volume of the medical liquid left in the fluid source reaches a preset fourth volume threshold according to the first liquid volume, the first flow signal and the second flow signal;

the ratio of the difference between the first flow signal and the second flow signal to the first liquid volume satisfies a preset signal change characteristic;

the first flow signal satisfies a predetermined signal characteristic.

In a third aspect, the present application provides a fluid delivery system comprising:

a fluid source for storing a medical fluid;

one end of the pipeline is connected with the fluid source, and the medical liquid flows out from the other end of the pipeline;

the extrusion mechanism comprises a power mechanism and a roller, the pipeline is matched with the roller, and the power mechanism is used for driving the roller to move under the control of the controller so that the medical liquid in the pipeline flows towards a preset direction under the action of the roller; wherein the pipeline is divided into an upstream pipeline and a downstream pipeline by the extrusion mechanism, and the medical liquid flows from the upstream pipeline to the downstream pipeline;

a controller, configured to:

and acquiring flow signals at least two moments, and controlling the rotating speed of the power mechanism and/or sending alarm information based on the flow signals at the at least two moments.

acquiring flow signals at least two moments;

and when the variation of the flow signals at least two moments reaches a preset flow signal variation threshold value, controlling the rotating speed of the power mechanism.

acquiring flow signals at least two moments;

calculating the liquid level change of the fluid source according to the flow signals at least two moments;

and when the liquid level height change reaches a preset liquid level height change threshold value, controlling the rotating speed of the power mechanism.

In a fourth aspect, the present application also provides a computer readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the steps of the method of pumping a medical surgical pump.

The medical surgical pump infusion system comprises a fluid source, a pipeline, an extrusion mechanism, a sensor and a controller; the fluid source is used for storing medical liquid; one end of the pipeline is connected with a fluid source, and medical liquid flows out from the other end of the pipeline; the extrusion mechanism comprises a power mechanism and a roller, wherein the power mechanism is used for driving the roller to move so as to enable the medical liquid in the pipeline to flow towards a preset direction under the action of the roller; the sensor is arranged on the flow path of the upstream pipeline and used for sensing a flow signal of the corresponding fluid on the flow path at a sampling position point; the system can determine a first liquid volume of the medical liquid flowing out of the fluid source through the pipeline between a first time and a second time according to parameters of the power mechanism and parameters of the pipeline, and obtain flow signals corresponding to the first time and the second time respectively through the sensor, so that the rotating speed of the power mechanism is controlled and/or alarm information is sent out according to the first liquid volume and the first flow signal and the second flow signal corresponding to the first time and the second time respectively, and the safety of the operation is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a first schematic diagram of a medical surgical pump fluid delivery system according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of empty pipe identification provided by an embodiment of the present application;

fig. 3 is a second schematic structural view of a medical surgical pump fluid delivery system according to an embodiment of the present application;

FIG. 4 is a first schematic flow chart of a method for pumping fluid for a surgical pump according to an embodiment of the present disclosure;

FIG. 5 is a second schematic flow chart of a method for pumping fluid for a surgical pump according to an embodiment of the present application;

FIG. 6 is a third schematic flow chart of a method for pumping fluid from a surgical pump according to an embodiment of the present application;

fig. 7 is a third schematic structural view of a medical surgical pump fluid delivery system according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the term "for example" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "for example" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The medical surgical pump infusion control system, the medical surgical pump infusion control method, and the computer-readable storage medium according to the embodiments of the present application will be described in detail below, respectively. It should be noted that the following description of the embodiments is not intended to limit the preferred sequence of the embodiments, and the medical surgical pump in the following embodiments may be a uterus expansion pump or a flushing suction pump, or other types of medical surgical pumps.

Referring to fig. 1, an embodiment of the present application provides a medical surgical pump fluid delivery system 100, including: a fluid source 10, a conduit 20, a squeezing mechanism 30, a sensor 40, and a controller 50.

A fluid source 10 for storing a medical fluid. The shape of the fluid source 10 may be any shape, such as a cylinder, a funnel, a rectangle, etc., and the embodiments of the present invention are not limited thereto. The material of the fluid source 10 may be any material, such as polyethylene, polypropylene, silica, etc., and the embodiment of the present invention is not limited thereto.

A tubing 20, one end of the tubing 20 being connected to the fluid source 10 and the medical fluid flowing out through the tubing 20 from the other end. The pipe 20 may be a hollow pipe, and the size and material of the hollow pipe are not limited. The pipe 20 can pass through a hole preset at one end of the fluid source 10 and be fixedly or movably connected with the fluid source 10.

The squeezing mechanism 30 comprises a power mechanism 301 and a roller 302, the pipeline 20 is installed in a matching way with the roller 302, and the power mechanism 301 is used for driving the roller 302 to move so as to enable the medical liquid in the pipeline 20 to flow towards a preset direction under the action of the roller 302; wherein the tubing 20 is divided by the squeezing mechanism 30 into an upstream tubing and a downstream tubing, and the medical liquid flows from the upstream tubing to the downstream tubing. Wherein, the circumferential edge of the roller 302 can be preset with a recessed pipeline installation groove for installing the pipeline 20. The power mechanism 301 may be a motor, and the power mechanism 301 may be electrically connected to the roller 302 to drive the roller 302 to move.

And a sensor 40, which is arranged on the flow path of the upstream pipeline and is used for sensing the flow signal of the corresponding fluid on the flow path at the sampling position point. The sensor 40 may be a pressure sensor, the flow signal may include any one of a pressure signal, a voltage signal, and a digital-to-analog signal, and the pressure signal, the voltage signal, and the digital-to-analog signal may be converted from the pressure signal. The sensor 40 can sense the flow signal of the corresponding fluid in the flow path at the sampling position in real time, or can sense the flow signal of the corresponding fluid in the flow path at the sampling position at regular time based on the preset period interval duration. The sensor 40 may be fixedly installed on the flow path of the upstream pipeline, or may be slidably installed on the flow path of the upstream pipeline. In addition, the sensor 40 may be disposed on a flow path outside the upstream pipeline, or may be disposed on a flow path inside the upstream pipeline, and the embodiment of the present application is not limited thereto.

A controller 50, configured to: determining a first liquid volume of the medical liquid flowing out of the fluid source 10 through the pipeline 20 between the first time and the second time according to the power mechanism parameter of the power mechanism 301 and the pipeline parameter of the pipeline 20, and obtaining flow signals corresponding to the first time and the second time respectively through the sensor 40; and controlling the rotating speed of the power mechanism 301 and/or sending alarm information according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time.

The parameters of the power mechanism may include a rotation speed of the power mechanism 301 (in units of "circle/second" or "circle/minute"), a unit rotation number of the power mechanism 301, and/or a rotation time of the power mechanism 301 (in units of "second" or "minute"). The pipe parameter may be the size of the pipe 20, and specifically, the diameter of the pipe 20 (which may be in units of "mm", "cm", etc.).

The first time may be a starting time when the roller 302 starts to rotate, or may be any time after the roller 302 starts to rotate, where the any time may be manually specified, or may be determined by feeding back the sensor 40 to the controller 50 when sensing an abrupt flow signal. The second time is later than the first time, and the second time may be a time separated from the first time by a preset time.

Specifically, if the first time is fixedly set, the value of the second time may be taken multiple times according to a certain rule; for example, the first time is "a time", and if the preset regular value step is "x duration", the second time may be "a + x time", "a +2x time", and so on. If the first time is not fixedly set, and only the time length between the first time and the second time is fixedly set, both the first time and the second time can be any time. However, regardless of how the first time and the second time are set, there is a standard model corresponding thereto, that is, there is a process in which a corresponding computer program is adapted to the above-described various cases.

It should be noted that, after the controller 50 analyzes and determines the first liquid volume of the medical liquid flowing out of the fluid source 10 and acquires the first flow signal and the second flow signal, it may implement automatic control of the rotation speed of the power mechanism 301 based on the above parameters as necessary, or generate and send an alarm message to prompt the need of manual control of the rotation speed of the power mechanism 301 by using the alarm message. The rotation speed control trigger conditions, the rotation speed control manner, and the like according to the present embodiment will be described in detail below.

In addition, although the controller 50 shown in fig. 1 is disposed outside the pressing mechanism 30 and is a separate body, this is only one arrangement way, and the embodiment of the present application proposes that the controller 50 may be disposed inside the pressing mechanism 30, so that the controller 50 may be integrated with the power mechanism 301 and the roller 302, which is convenient for movement and hiding of the line, and thus the physical appearance of the medical surgical pump infusion system is more beautiful. Of course, no matter where the controller 50 is disposed, the embodiment of the present application is not particularly limited.

In some embodiments, controlling the rotation speed of the power mechanism 301 and/or sending an alarm message according to the first liquid volume and the first flow signal and the second flow signal corresponding to the first time and the second time, respectively, includes: determining a second liquid volume of the medical liquid remaining within the fluid source 10 based on the first liquid volume and the first and second flow signals; the rotational speed of the power mechanism 301 is controlled based on the second volume of liquid, and the first and second flow signals.

Wherein the first liquid volume can be expressed as "V ₁ ", the first flow signal may be denoted as" P ₁ ", the second flow signal may be denoted as" P ₂ ", the second liquid volume may be denoted as" V ₂ ”。

It will be appreciated that the total volume "V" of medical fluid should be "V ₁ +V ₂ ", in order to determine the second liquid volume" V ₂ ", it is necessary to determine the total volume" V "of the medical fluid, which is equivalent to the fluid source10, which may be determined in the following way: determining a signal variation of the first flow signal and the second flow signal between the first time and the second time; determining the liquid storage volume of the fluid source according to the first liquid volume and the signal variation; and controlling the rotating speed of the power mechanism according to the liquid storage volume, the first liquid volume and the signal variation of the fluid source.

For example, the signal variation may be expressed as "(P) ₁ -P ₂ ) "OR" (P) ₂ -P ₁ ) "the difference between the first flow signal and the second flow signal is obtained, but to ensure that the final value is a positive number, the formula for determining the liquid holding volume of the fluid source 10 according to the first liquid volume and the signal variation can be: "| (P) ₁ -P ₂ )/V ₁ And | i ", namely, taking the absolute value of the ratio between the volume of the first liquid and the signal variation to obtain a signal variation speed.

However, since the fluid sources 10 with different liquid storage volumes output liquid, different signal change speeds exist regardless of the pipeline parameters of the pipeline 20. Therefore, the signal change speed "| (P) is obtained by analysis ₁ -P ₂ )/V ₁ And matching the signal change speed with a plurality of pre-stored signal change speeds, and finally matching a volume value corresponding to the target signal change speed, namely the volume of the stored liquid of the fluid source 10 required by the embodiment, so as to determine the total volume "V" of the medical liquid. At this time, due to the first liquid volume "V ₁ "known, so calculate" V "and" V ₁ "the difference between the first and second volumes" V "of medical fluid remaining in the fluid source 10 ₂ ”。

Finally, based on the second liquid volume "V ₂ ", first flow signal" P ₁ And a second flow signal P ₂ ", or, based on the stock volume" V ", the first liquid volume" V "of the fluid source ₁ "and signal variation amount" | (P) ₁ -P ₂ ) ", the control manner and the control trigger condition for controlling the rotation speed of the power mechanism 301 will be described in detail below.

In some embodiments, the controller 50 is further configured to: the number of revolutions per unit of the power mechanism 301 is obtained and a first volume of fluid flowing from the fluid source between the first time to the second time is determined based on the number of revolutions per unit of the power mechanism 301, the size of the roller 302, and the size of the conduit 20.

For example, assuming a unit number of rotations of the power mechanism 301 of "1", a size of the roller 302 of "x", and a size of the conduit 20 of "y", a volume of medical fluid per unit time period exiting the fluid source of "v ₁ ", and as the size" x "of roller 302 increases or decreases and the size" y "of conduit 20 increases or decreases, the volume of medical fluid exiting the fluid source per unit of time is" v ₁ α ", wherein the coefficient" α "is controlled by the two dimensions" x "and" y ", the number of revolutions and the duration of the liquid outflow of the power mechanism 301 are further determined on the basis thereof, i.e. the first liquid volume" V "is determined ₁ ”。

In some embodiments, the controller 50 is further configured to: the rotational speed of the power mechanism 301 is obtained to determine a first volume of liquid flowing out of the fluid source 10 between the first time and the second time based on the rotational speed of the power mechanism 301, the size of the roller 302, and the size of the conduit 20.

It has been mentioned in the above embodiments that the first volume "V" of liquid flowing out of the fluid source 10 from the first time to the second time may be determined by determining the number of rotations of the power mechanism 301 ₁ ", the present embodiment proposes that the number of rotations of the actuating mechanism 301 may be determined by obtaining the rotational speed of the actuating mechanism 301 in combination with the duration from the first time to the second time, and thus the first liquid volume" V "may also be determined ₁ ”。

For example, if the rotation speed of the power mechanism 301 is "3 revolutions per second" and the time period from the first time to the second time is "5 seconds", the number of revolutions of the power mechanism 301 is "15", and the value of the coefficient "α" is determined by combining the dimension "x" of the roller 302 and the dimension "y" of the tube 20, and the volume of the medical fluid flowing out of the fluid source is determined as "v" per revolution ₁ ", i.e., can be based on" v ₁ Alpha 15' calculation gives the firstVolume of liquid "V ₁ ”。

In some embodiments, the controller 50 is further configured to: a first volume of fluid flowing from the fluid source between the first time and the second time is determined based on the flow rate of the medical fluid and the size of the tubing.

The flow rate of the medical fluid may be a displacement of the fluid per unit time, for example, a distance of a pipeline is defined (assumed to be "m meters"), and then a ratio of a certain point of the medical fluid to a time required for passing through the distance is calculated (assumed to be "T seconds"), so as to obtain a flow rate "ν" (in units of "meters per second") of the fluid. Based on the flow rate of the medical fluid and the size of the tubing (i.e., the cross-sectional radius of the tube diameter is "d meters"), the controller 50 then calculates the following equation: q ═ d ^2 ^ upsilon, the flow rate "Q" of the medical liquid can be calculated, and then the first liquid volume "V" flowing out of the fluid source from the first time to the second time can be determined according to the flow rate ═ liquid volume/time ^ Q ₁ ”。

In some embodiments, the controlling and/or sending out an alarm of the rotation speed of the power mechanism according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time comprises: generating first alarm prompt information in response to a preset first alarm condition, wherein the first alarm prompt information is used for prompting that the medical liquid in the fluid source is insufficient; the first alarm condition includes at least one of:

the first condition is as follows: the first liquid volume reaches a preset first volume threshold;

and a second condition: determining that a second liquid volume of the medical liquid left in the fluid source reaches a preset second volume threshold according to the first liquid volume, the first flow signal and the second flow signal;

and (3) carrying out a third condition: the ratio between the first liquid volume and the holding volume of the fluid source reaches a preset ratio threshold.

The first volume threshold may be a volume value close to the volume of the liquid in the fluid source 10, and once it is determined that the volume of the first liquid flowing out of the fluid source 10 reaches the first volume threshold, it may be determined that the medical liquid remaining in the fluid source 10 is insufficient, and a first alarm prompt message needs to be generated in order to avoid a safety problem caused by pumping air into the cavity.

For example, if the liquid volume of the fluid source 10 is "300 ml", the first volume threshold may be preset to "280 ml", and once the first liquid volume flowing out reaches "280 ml", it means that only "20 ml" of medical liquid remains in the fluid source 10, at this time, if the operation of the power mechanism 301 is not stopped, or if the fluid source 10 completely containing sufficient medical liquid is not replaced, the remaining "20 ml" of medical liquid may be pumped into the cavity, and the cavity may be filled with air, or the medical liquid in the cavity may flow back due to the pressure difference, causing a safety problem, so that a first alarm prompt message needs to be generated as the alarm message to be sent.

Wherein the second volume threshold may be a near zero volume safety value, such as "20 ml" above. The manner of determining the second liquid volume according to the first liquid volume, the first flow signal and the second flow signal is described in detail above, and is not repeated herein. The present embodiment merely proposes that the controller 50 may generate the first alarm notice information as the alarm information to be sent out in response to the second liquid volume reaching the preset second volume threshold.

Wherein the occupancy threshold may be a value close to "1" but less than "1", e.g. the occupancy threshold is preset to "0.8", once the ratio between the first liquid volume and the liquid holding volume reaches "0.8", meaning that 80% of the medical liquid has flowed out of the fluid source 10 into the cavity. At the moment, first alarm prompt information is generated and used as alarm information to be sent out, and therefore safety problems can be avoided.

In some embodiments, the controlling and/or sending out an alarm of the rotation speed of the power mechanism according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time comprises: generating second alarm prompt information in response to a preset second alarm condition, wherein the second alarm prompt information is used for prompting that the fluid source is emptied; the second alarm condition includes at least one of:

the first condition is as follows: the first liquid volume reaches a preset third volume threshold;

and a second condition: determining that the second liquid volume of the medical liquid left in the fluid source reaches a preset fourth volume threshold according to the first liquid volume, the first flow signal and the second flow signal;

and (3) carrying out a third condition: the ratio of the difference between the first flow signal and the second flow signal to the first liquid volume satisfies a preset signal variation characteristic;

and a fourth condition: the flow signal satisfies a predetermined signal characteristic.

The third volume threshold may be a volume value close to the liquid volume of the fluid source 10, for example, if the liquid volume of the fluid source 10 is "300 ml", the third volume threshold may be preset to "290 ml", or "280 ml" which is the same as the first volume threshold, and the embodiment of the present application is not limited thereto.

Correspondingly, under the liquid volume limit of the same fluid source 10, the fourth volume threshold may be the same as the second volume threshold, i.e. both of the values are "20 ml", and may also be a slightly lower or higher value, the difference is only that the larger the value is, the higher the safety is, but the more the remaining amount is, the more the cost is easily increased; conversely, the smaller the value, the lower the safety is, but the remaining amount is reduced to control the cost, which is determined by the requirements of the specific visual scene.

Wherein the difference between the first flow signal and the second flow signal may be represented as the signal change amount "| (P) described above ₁ -P ₂ ) L ", which is related to the first liquid volume" V | " ₁ "the ratio between" can be expressed as the signal change speed "| (P) ₁ -P ₂ )/V ₁ ". It will be appreciated that different rates of signal change will exist due to different fluid volumes of the fluid source 10 being used to fill the cavity with medical fluid via the tubing. Thus, a target rate of change of signal may be pre-stored when the fluid source 10 is empty or near empty, such that when the controller 50 detects the current rate of change of signal "| (P) ₁ -P ₂ )/V ₁ The | is changed along with the volume of the first liquid to achieve the aimWhen the signal change speed is marked, the signal change speed can be judged to meet the preset signal change characteristic, and then second alarm prompt information is generated to serve as alarm information to be sent out.

In addition, referring to fig. 2, once the controller 50 acquires the flow signal, it can detect whether the signal intensity of the flow signal is lower than a predetermined signal intensity. The preset signal strength may be any signal strength between a first signal strength corresponding to the empty pipe 20 and a second signal strength corresponding to the non-empty pipe 20, for example, an average value of the first signal strength and the second signal strength.

Correspondingly, when the signal intensity of a certain flow signal is detected to be lower than the preset signal intensity, it indicates that the fluid in the pipeline 20 is air; when the signal intensity of a certain flow signal is detected to be not lower than the preset signal intensity, it indicates that the fluid in the pipeline 20 is the medical liquid. It should be noted that the signal strength in fig. 2 is only an example, and in an actual scenario, due to various errors, when the pipeline 20 is empty or there is medical liquid flowing in the pipeline 20, the signal strength of the detected flow signal does not form a straight line, but there may be some fluctuation, but the fluctuation does not affect the judgment and identification of the present application.

Alternatively, the preset signal strength may be a signal strength corresponding to a situation where the pipeline 20 is empty, and once the controller 50 detects that the signal strength of a certain flow signal is consistent with the preset signal strength, it may be determined that the fluid in the pipeline 20 is air instead of medical liquid at this time, and especially, the second flow signal is more likely to be the case than the first flow signal. Therefore, the condition four can be judged to be met, and then second alarm prompt information is generated to serve as alarm information to be sent out.

In some embodiments, the controller 50 is further configured to: the power mechanism 301 is controlled to stop the driving roller 302. The power mechanism 301 stops driving the roller 302, i.e. the power mechanism 301 is turned off, so that the roller 302 stops rotating. The control instruction for controlling the power mechanism 301 to stop driving the roller 302 may be manually submitted, or may be autonomously generated by the controller 50, and the embodiment of the present application is not limited in particular.

In some embodiments, the first alarm cue for indicating an insufficiency of medical fluid in the fluid source comprises visual information and/or audible information, and the second alarm cue for indicating an emptying of the fluid source comprises visual information and/or audible information; the system further comprises: a display device and/or a broadcast device; the display device displays visual information and the broadcast device is used for expressing auditory information.

Wherein, the visual information can comprise alarm prompt characters, pictures and texts, and the like; the auditory information may include any preset sound, such as a buzzer, a voice, etc., and the embodiment of the present application is not limited.

Referring to fig. 3, the medical surgical pump fluid delivery system 100 further comprises: the display device 60, and/or the broadcasting device, the display device 60 may be disposed in the pressing mechanism 30, so that the power mechanism 301, the roller 302, and the display device 60 may be integrated into a single body for easy movement. The broadcast device may be disposed in the extruding mechanism 30, or may be disposed outside the extruding mechanism 30, and the specific disposition of the broadcast device is not limited in the embodiments of the present application.

Referring to fig. 4, the present application further provides a method for pumping a medical surgical pump, which is applied to the medical surgical pump pumping system described above, where the medical surgical pump pumping system includes a fluid source, a pipeline, a sensor, a controller, a power mechanism and a roller; one end of the pipeline is connected with a fluid source, medical liquid flows out from the other end of the pipeline through the pipeline, and the sensor is arranged on a flow path of the pipeline; the power mechanism is used for driving the roller to move; the controller is respectively in communication connection with the sensor and the power mechanism; the medical surgical pump fluid delivery method includes the following steps S401 to S403:

s401, flow signals corresponding to the first time and the second time are acquired through a sensor.

And S402, determining a first liquid volume of the medical liquid flowing out of the fluid source through the pipeline between the first time and the second time through the controller according to the power mechanism parameter of the power mechanism and the pipeline parameter of the pipeline.

And S403, controlling the rotating speed of the power mechanism and/or sending alarm information by the controller according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time.

Specifically, in order to improve the safety of the operation, after the medical surgical pump infusion system starts to operate, the controller needs to acquire the flow signals corresponding to the first time and the second time respectively through the sensor to obtain the first flow signal and the second flow signal. The first time may be a starting time at which the roller starts to rotate or any time after the roller starts to rotate, and the second time may be any time later than the first time or any time when the corresponding flow signal is detected to satisfy a predetermined signal characteristic, such as a signal characteristic for emptying the fluid source.

Further, after the controller acquires the first flow signal and the second flow signal, the first liquid volume of the medical liquid flowing out of the fluid source through the pipeline may be calculated according to preset pipeline parameters of the power mechanism, such as the unit number of rotations of the power mechanism, the rotation speed of the power mechanism, the size of the pipeline, and the like, in combination with the duration information from the first time to the second time. After the first liquid volume is obtained through calculation, the controller can control the rotating speed of the power mechanism and/or send alarm information by combining the first flow signal and the second flow signal, and a specific control mode will be described in detail below.

In some embodiments, referring to fig. 5, step S403 includes: s4031, determining a second liquid volume of the remaining medical liquid in the fluid source according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time; s4032, based on the volume of the second liquid, the first flow signal and the second flow signal, the rotating speed of the power mechanism is controlled and/or alarm information is sent out.

Wherein the first liquid volume may be denoted as "V1", the first flow signal may be denoted as "P1", the second flow signal may be denoted as "P2", and the second liquid volume may be denoted as "V2".

It will be understood that the total volume "V" of medical fluid should be "V1 + V2", and that in order to determine the second fluid volume "V2", i.e. the total volume "V" of medical fluid should be determined, which is equivalent to the storage volume of the fluid source 10, which can be determined in the manner shown in fig. 6, including: s40301, determining a signal variation between a first time and a second time based on the first time and the second time and corresponding first flow signal and second flow signal; s40302, determining the liquid storage volume of the fluid source according to the first liquid volume and the signal variable quantity; s40303, controlling the rotating speed of the power mechanism and/or sending alarm information according to the liquid storage volume, the first liquid volume and the signal variable quantity of the fluid source.

For example, the signal change amount may be expressed as "(P1-P2)" or "(P2-P1)", i.e. the difference between the first flow signal and the second flow signal is obtained, but to ensure that the final value is a positive number, the formula for determining the liquid holding volume of the fluid source 10 according to the first liquid volume and the signal change amount may be: "| (P1-P2)/V1 |", which is the absolute value of the ratio between the volume of the first liquid and the signal variation, is taken to obtain a signal variation speed.

However, since the fluid sources 10 with different liquid storage volumes output liquid, different signal change speeds exist regardless of the pipeline parameters of the pipeline 20. Therefore, the total volume "V" of the medical liquid can be determined by analyzing and obtaining the signal change speed "| (P1-P2)/V1 |", matching the signal change speed with a plurality of pre-stored signal change speeds, and finally matching a volume value corresponding to the target signal change speed, that is, the volume value of the fluid source 10 required by the embodiment. At this time, since the first liquid volume "V1" is known, calculating the difference between "V" and "V1" allows the second liquid volume "V2" of the medical liquid remaining in the fluid source 10 to be determined.

Finally, the control method and the control trigger condition for controlling the rotation speed of the power mechanism 301 based on the second liquid volume "V2", the first flow signal "P1" and the second flow signal "P2", or based on the liquid storage volume "V", the first liquid volume "V1" and the signal change amount "| (P1-P2) |" of the fluid source will be described in detail below.

In some embodiments, the method of determining the first liquid volume in step S402 comprises at least one of: acquiring the unit rotation turns of the power mechanism, and determining the volume of the first liquid according to the unit rotation turns of the power mechanism, the size of the roller and the size of the pipeline; acquiring the rotating speed of the power mechanism to determine the volume of the first liquid according to the rotating speed of the power mechanism, the size of the roller and the size of the pipeline; the first fluid volume is determined based on the flow rate of the medical fluid and the size of the tubing.

Assuming that the number of turns of the power mechanism 301 is "1", the size of the roller 302 is "x", and the size of the conduit 20 is "y", the volume of the medical fluid flowing out of the fluid source per unit time is "V1", and as the size of the roller 302 is increased or decreased and the size of the conduit 20 is increased or decreased, the volume of the medical fluid flowing out of the fluid source per unit time is "V1 α", wherein the coefficient "α" is controlled by the sizes of the two sizes "x" and "y", the number of turns of the power mechanism 301 and the liquid flowing-out time are further determined on the basis, and the first liquid volume "V1" can be determined.

For example, if the rotation speed of the power mechanism 301 is "3 revolutions per second" and the time period from the first time to the second time is "5 seconds", the number of revolutions of the power mechanism 301 is "15", and the value of the coefficient "α" is determined by combining the dimension "x" of the roller 302 and the dimension "y" of the tube 20, and the volume of the medical fluid flowing out of the fluid source is determined by the number of revolutions per unitIs "v ₁ ", i.e. may be based on" v ₁ Calculating α 15 to obtain a first liquid volume V ₁ ”。

The flow rate of the medical fluid may be a displacement of the fluid per unit time, for example, a distance of a pipeline is defined (assumed to be "m meters"), and then a ratio of a certain point of the medical fluid to a time required for passing through the distance is calculated (assumed to be "T seconds"), so as to obtain a flow rate "ν" (in units of "meters per second") of the fluid. Based on the flow rate of the medical fluid and the size of the tubing (i.e., the cross-sectional radius of the tube diameter is "d meters"), the controller 50 then calculates the following equation: q ═ d ^2 ^ upsilon, the flow rate Q of the medical liquid can be calculated, and then the first liquid volume V flowing out of the fluid source from the first time to the second time can be determined according to the flow rate fluid volume/time ₁ ”。

In some embodiments, the step S403 of controlling the rotation speed of the power mechanism and/or sending out an alarm message includes: generating first alarm prompt information in response to a preset first alarm condition, wherein the first alarm prompt information is used for prompting that the medical liquid in the fluid source is insufficient; the first alarm condition includes at least one of: the first liquid volume reaches a preset first volume threshold; determining that a second liquid volume of the medical liquid left in the fluid source reaches a preset second volume threshold according to the first liquid volume, the first flow signal and the second flow signal; the ratio of the first liquid volume to the liquid storage volume of the fluid source reaches a preset ratio threshold; and/or generating a second alarm prompt message in response to a preset second alarm condition, the second alarm prompt message being used to prompt that the fluid source is empty; the second alarm condition includes at least one of: the first liquid volume reaches a preset third volume threshold; determining that the second liquid volume of the medical liquid left in the fluid source reaches a preset fourth volume threshold according to the first liquid volume, the first flow signal and the second flow signal; the ratio of the difference between the first flow signal and the second flow signal to the first liquid volume satisfies a preset signal variation characteristic; the first flow signal satisfies a predetermined signal characteristic.

Wherein the occupancy threshold may be a value close to "1" but less than "1", e.g. the occupancy threshold is preset to "0.8", once the ratio between the first liquid volume and the reservoir volume reaches "0.8", meaning that 80% of the medical liquid has flowed out of the fluid source 10 into the cavity. At the moment, first alarm prompt information is generated and used as alarm information to be sent out, and therefore safety problems can be avoided.

Wherein the difference between the first flow signal and the second flow signal may be represented as the signal change amount "| (P) described above ₁ -P ₂ ) L ", which is related to the first liquid volume" V | " ₁ "the ratio between" can be expressed as the signal change speed "| (P) ₁ -P ₂ )/V ₁ ". It will be appreciated that different rates of signal change will exist due to different fluid volumes of the fluid source 10 being used to fill the cavity with medical fluid via the tubing. Thus, a target rate of change of signal may be pre-stored when the fluid source 10 is empty or near empty, such that when the controller 50 detects the current rate of change of signal "| (P) ₁ -P ₂ )/V ₁ And if the change speed of the target signal is reached along with the change of the volume of the first liquid, |', judging that the signal change speed meets the preset signal change characteristic, and further generating second alarm prompt information serving as alarm information to be sent.

In addition, referring to fig. 2, once the controller 50 acquires the flow signal, it can detect whether the signal intensity of the flow signal is lower than a predetermined signal intensity. The preset signal strength may be any one of a first signal strength corresponding to the empty pipe of the pipeline 20 and a second signal strength corresponding to the non-empty pipe of the pipeline 20, for example, an average value of the first signal strength and the second signal strength.

Correspondingly, when the signal intensity of a certain flow signal is detected to be lower than the preset signal intensity, it indicates that the fluid in the pipeline 20 is air; when the signal intensity of a certain flow signal is detected to be not lower than the preset signal intensity, it indicates that the fluid in the pipeline 20 is the medical liquid. It should be noted that the signal intensity in fig. 2 is only an example, and in an actual scenario, due to various errors, when the pipeline 20 is empty or there is medical fluid flowing in the pipeline 20, the detected signal intensity of the flow signal does not form a straight line, but there may be some fluctuation, but the fluctuation does not affect the judgment and identification of the present application.

Referring to fig. 7, the present application further provides an infusion system 700, including:

a fluid source 10 for storing a medical fluid;

a tube 20, one end of the tube 20 is connected with the fluid source 10, and the medical liquid flows out from the other end through the tube 20;

the squeezing mechanism 30 comprises a power mechanism 301 and a roller 302, the pipeline 20 is installed in a matching way with the roller 302, the power mechanism 301 is used for driving the roller 302 to move under the control of the controller 50, so that the medical liquid in the pipeline 20 flows towards a preset direction under the action of the roller 302; wherein the line 20 is divided into an upstream line and a downstream line by the squeezing mechanism 30, and the medical liquid flows from the upstream line to the downstream line;

a sensor 40 disposed in the flow path of the upstream pipeline for sensing a flow signal of the corresponding fluid in the flow path at the sampling location;

a controller 50, configured to:

The flow signals of the at least two moments may include a first flow signal corresponding to a first moment and a second flow signal corresponding to a second moment. Along with the flow change of the medical liquid in the upstream pipeline, the first flow signal and the second flow signal both have certain changes, and the signal difference between the first flow signal and the second flow signal also has changes, and the specific change condition is analyzed, so that the rotating speed of the power mechanism can be controlled and/or alarm information can be sent out.

For example, the controller 50 detects that a certain flow signal satisfies a predetermined signal characteristic, such as a signal characteristic when the fluid source 10 is empty, which means that the fluid flowing in the pipeline 20 is not medical fluid but air, and in order to avoid a reduction in the safety of the operation, the rotation speed of the power mechanism 301 needs to be controlled and/or an alarm message is sent to prompt a user to control the rotation speed of the power mechanism 301.

In some embodiments, controlling the rotation speed of the power mechanism and/or sending an alarm message includes: acquiring flow signals at least two moments; and when the variation of the flow signals at least two moments reaches a preset flow signal variation threshold value, controlling the rotating speed of the power mechanism.

The flowing signals at the at least two moments may include a first flowing signal corresponding to the first moment and a second flowing signal corresponding to the second moment, and the variation of the flowing signals at the at least two moments may be the difference between the first flowing signal and the second flowing signal, that is, the above-mentioned signal variation "| (P) ₁ -P ₂ ) I when the signal varies by "| (P) ₁ -P ₂ ) When | reaches a preset flow signal change threshold, the controller 50 may control the rotation speed of the power mechanism 301.

In some embodiments, controlling the rotation speed of the power mechanism and/or sending an alarm message includes: acquiring flow signals at least two moments; calculating the liquid level change of the fluid source according to the flow signals at least two moments; and when the liquid level height change reaches a preset liquid level height change threshold value, controlling the rotating speed of the power mechanism.

The flow signals at the at least two moments may include a first flow signal corresponding to the first moment and a second flow signal corresponding to the second moment, and as the medical fluid in the fluid source 10 is continuously discharged, the change conditions of the flow signals at the front and rear moments will also present a curve change, so that the change of the liquid level of the fluid source 10 at each time interval can be calculated. For example, the level of the fluid source 10 does not change rapidly when the fluid source 10 begins to expel medical fluid, and the level of the fluid source 10 changes more rapidly when the fluid source 10 is about to empty of medical fluid. The liquid level height change of the fluid source 10 is detected in real time or at regular time, and whether the liquid level height change reaches a preset liquid level height change threshold value is judged, that is, when the liquid level height change reaches the preset liquid level height change threshold value, the rotating speed of the power mechanism 301 is controlled, for example, the power mechanism 301 is controlled to stop running.

The medical surgical pump infusion system, the method and the infusion system provided by the embodiment have the advantages that the fluid source for storing medical liquid, the pipeline with one end connected with the fluid source and the medical liquid flowing out from the other end, the extrusion mechanism comprising the power mechanism and the roller, and the sensor arranged on the flow path of the upstream pipeline and used for sensing the flow signal of the corresponding fluid on the flow path at the sampling position point are arranged, so that the roller can drive the medical liquid in the pipeline to flow towards the preset direction under the driving of the power mechanism, the rotating speed of the power mechanism is controlled and/or alarm information is sent according to the flow signals at least two moments, and finally the operation safety is improved.

In some embodiments of the present application, there is also provided a computer readable storage medium having a computer program stored thereon, where the computer program is loaded by a processor to cause the processor to perform the steps of the above-mentioned method for delivering fluid to a medical surgical pump. The steps of the medical surgical pump fluid administration method herein may be steps of the medical surgical pump fluid administration methods of the various embodiments described above.

It will be understood by those of ordinary skill in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when executed. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM may take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example.

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

The medical surgical pump fluid infusion method, device, system, computer device and storage medium provided by the embodiments of the present application are described in detail, and the principles and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A medical surgical pump fluid delivery system, comprising:

a fluid source for storing a medical fluid;

a tube, one end of the tube is connected with the fluid source, and the medical liquid flows out from the other end through the tube;

the extrusion mechanism comprises a power mechanism and a roller, the pipeline is matched with the roller, and the power mechanism is used for driving the roller to move so as to enable the medical liquid in the pipeline to flow towards a preset direction under the action of the roller; wherein the tubing is divided by the expression mechanism into an upstream tubing and a downstream tubing, the medical liquid flowing from the upstream tubing to the downstream tubing;

a controller, configured to: determining a first liquid volume of the medical liquid flowing out of the fluid source through the pipeline between a first time and a second time according to parameters of the power mechanism and parameters of the pipeline, and obtaining flow signals corresponding to the first time and the second time respectively through the sensor;

and controlling the rotating speed of the power mechanism and/or sending alarm information according to the volume of the first liquid and the first flow signal and the second flow signal which respectively correspond to the first moment and the second moment.

2. The system according to claim 1, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time comprises:

determining a second fluid volume of medical fluid remaining in the fluid source based on the first fluid volume and the first and second flow signals;

controlling a rotational speed of the power mechanism based on the second liquid volume and the first and second flow signals.

3. The system according to claim 1, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time comprises:

determining a liquid storage volume of the fluid source according to the first liquid volume and the signal variation;

and controlling the rotating speed of the power mechanism according to the liquid storage volume of the fluid source, the first liquid volume and the signal variation.

4. The system of any of claims 1-3, wherein the controller is further configured to: and acquiring the unit rotation number of the power mechanism, and determining the volume of the first liquid flowing out of the fluid source from the first moment to the second moment according to the unit rotation number of the power mechanism, the size of the roller and the size of the pipeline.

5. The system of any of claims 1-3, wherein the controller is further configured to: and acquiring the rotating speed of the power mechanism, and determining the volume of the first liquid flowing out of the fluid source from the first moment to the second moment according to the rotating speed of the power mechanism, the size of the roller and the size of the pipeline.

6. The system of any of claims 1-3, wherein the controller is further configured to: determining the first volume of fluid flowing out of the fluid source from the first time to the second time based on the flow rate of the medical fluid and the size of the tubing.

7. The system according to any one of claims 1 to 3, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time comprises:

the first alarm condition includes at least one of:

the first liquid volume reaches a preset first volume threshold;

determining that a second liquid volume of the medical liquid remaining in the fluid source reaches a preset second volume threshold according to the first liquid volume and the first and second flow signals;

the ratio between the first liquid volume and the liquid storage volume of the fluid source reaches a preset ratio threshold.

8. The system according to claim 7, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time comprises:

the first liquid volume reaches a preset third volume threshold;

a second liquid volume of the medical liquid remaining in the fluid source determined according to the first liquid volume and the first and second flow signals reaches a preset fourth volume threshold;

the ratio between the difference between the first flow signal and the second flow signal and the first liquid volume satisfies a preset signal variation characteristic;

the flow signal satisfies a predetermined signal characteristic.

9. The system of claim 8, wherein the controller is further configured to: and controlling the power mechanism to stop driving the roller to move.

10. The system of claim 9, wherein the first alarm cue for alerting of a medical fluid starvation in the fluid source comprises visual and/or audible information and the second alarm cue for alerting of the depletion of the fluid source comprises visual and/or audible information;

the system further comprises: a display device and/or a broadcast device; the display device displays the visual information, and the broadcasting device is used for expressing the auditory information.

11. The system of any one of claims 1 to 3, wherein the sensor comprises a pressure sensor and the flow signal comprises any one of a pressure signal, a voltage signal, a digital-to-analog signal.

12. The system of any one of claims 1 to 3, wherein the first time is a start time of the roller starting to rotate or any time after the roller starting to rotate, and the second time is later than the first time.

13. The method is applied to a medical surgical pump infusion system, and the medical surgical pump infusion system comprises a fluid source, a pipeline, a sensor, a controller, a power mechanism and a roller; one end of the pipeline is connected with the fluid source, the medical liquid flows out from the other end of the pipeline through the pipeline, and the sensor is arranged on the flow path of the pipeline; the power mechanism is used for driving the roller to move; the controller is respectively in communication connection with the sensor and the power mechanism; the medical surgical pump fluid delivery method comprises the following steps:

acquiring flow signals corresponding to the first moment and the second moment respectively through the sensor;

determining, by the controller, a first fluid volume of the medical fluid flowing out of the fluid source through the tubing between the first time and the second time according to a power mechanism parameter of the power mechanism and a tubing parameter of the tubing;

14. The method according to claim 13, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message according to the first liquid volume and the first and second flow signals corresponding to the first and second times, respectively, comprises:

determining a second liquid volume of the medical liquid remaining in the fluid source according to the first liquid volume and the first flow signal and the second flow signal respectively corresponding to the first time and the second time;

and controlling the rotating speed of the power mechanism and/or sending alarm information based on the volume of the second liquid, the first flow signal and the second flow signal.

15. The method according to claim 13, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message according to the first liquid volume and the first and second flow signals corresponding to the first and second times, respectively, comprises:

determining a signal change amount between the first time and the second time based on the first time and the second time and the corresponding first flow signal and the second flow signal;

and controlling the rotating speed of the power mechanism and/or sending alarm information according to the liquid storage volume of the fluid source, the first liquid volume and the signal variation.

16. A method according to any one of claims 13 to 15, wherein the method of determining the volume of the first liquid comprises at least one of:

acquiring the unit rotation number of turns of the power mechanism, and determining the volume of the first liquid according to the unit rotation number of turns of the power mechanism, the size of the roller and the size of the pipeline;

determining the first liquid volume based on the flow rate of the medical liquid and the size of the tubing.

17. The method according to any one of claims 13 to 15, wherein the controlling the rotation speed of the power mechanism and/or sending an alarm message comprises:

the first liquid volume reaches a preset first volume threshold;

the ratio between the first liquid volume and the liquid storage volume of the fluid source reaches a preset ratio threshold value;

and/or

the first liquid volume reaches a preset third volume threshold;

determining that a second liquid volume of the medical liquid remaining in the fluid source reaches a preset fourth volume threshold according to the first liquid volume and the first and second flow signals;

the first flow signal satisfies a predetermined signal characteristic.

18. An infusion system, comprising:

a fluid source for storing a medical fluid;

the extrusion mechanism comprises a power mechanism and a roller, the pipeline is matched and mounted with the roller, and the power mechanism is used for driving the roller to move under the control of the controller so as to enable the medical liquid in the pipeline to flow towards a preset direction under the action of the roller; wherein the tubing is divided by the expression mechanism into an upstream tubing and a downstream tubing, the medical liquid flowing from the upstream tubing to the downstream tubing;

the controller is configured to:

19. The fluid delivery system of claim 18, wherein the controlling the rotational speed of the power mechanism and/or sending an alarm comprises:

acquiring flow signals at least two moments;

and when the variation of the flow signals at the at least two moments reaches a preset flow signal variation threshold, controlling the rotating speed of the power mechanism.

20. The infusion system of claim 18 or 19, wherein controlling the rotational speed of the power mechanism and/or sending an alarm message comprises:

acquiring flow signals at least two moments;

calculating the liquid level change of the fluid source according to the flow signals at the at least two moments;

21. A computer readable storage medium, having stored thereon a computer program adapted to be loaded by a processor to perform the steps of the method of any of claims 13 to 17.