CN108992743B

Movatterモバイル変換

Info

Publication number: CN108992743B
Application number: CN201810884833.7A
Authority: CN
Inventors: 王宇飞
Original assignee: Guangzhou Youwo Medical Equipment Co ltd
Current assignee: Guangzhou Youwo Medical Equipment Co ltd
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2022-01-07
Anticipated expiration: 2038-08-06
Also published as: CN108992743A

Abstract

The invention discloses an injection method and equipment for automatically generating an injection plan, which comprises a control end and an injection end, wherein the control end is connected with the injection end; the control end is used for inputting patient information, automatically generating an injection plan according to the input patient information and sending the injection plan to the injection end; the injection end is used for injecting contrast agent and flushing liquid according to the received injection plan. The advantages are that: only patient information needs to be input, an injection plan can be automatically generated according to the patient information, and the injection plan does not need to be manually consulted and calculated; human errors which may occur in the process of generating an injection plan are reduced to the maximum extent, potential medical risks are reduced, and the safety of patients in the injection process is improved; and simultaneously, the workload of operators is reduced.

Description

Injection method and device for automatically generating injection plan

Technical Field

The invention relates to the field of medical equipment and instruments, in particular to an injection method and equipment for automatically generating an injection plan.

Background

Medical high-pressure injectors used in the diagnosis of diseases or radiotherapy are generally used as accessories for X-ray machines, CT, MRI or other medical devices. The high-pressure injector can ensure that the contrast agent is intensively injected into the cardiovascular of a patient in a short time, and the examined part is filled with high concentration, so as to take a better image of the contrast agent. Meanwhile, the three parts of contrast agent injection, host exposure and film changer can be coordinated and matched, so that the accuracy of photography and the success rate of radiography are improved. Imaging methods non-invasive indications of internal body structures and organs are widely used, for example, when examining the human body by means of X-ray machines, CT or MRI, to inject enhancing agents into the body tissues or organs in order to enhance the effect of the observation.

The medical imaging contrast agent refers to some special substances which are often required to be applied in medical examination and interventional therapy in order to increase the contrast of certain internal organ tissues or cavities and further clearly display the shape, contour and pathological change characteristics of organs or cavities, and the substances are called medical imaging contrast agents. Known as enhancement agents in Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) and ultrasound medicine.

The high-pressure injector can accurately control the injection rate and the injection amount of the contrast agent and the flushing liquid so as to realize better developing effect. The amount of contrast agent used will depend on the age, weight, cardiac output of the patient, the general condition of the patient, clinical objectives, etc.

In the existing high-pressure injection process, an operator needs to look up a relevant table such as a recommended table or an experience table of the dosage of the contrast agent and the like and calculate to obtain the dosage of the contrast agent injection, the injection rate of the contrast agent, the injection amount of the flushing liquid and the injection rate of the flushing liquid, and manually input the obtained data into an injection plan, so that the high-pressure injector injects the contrast agent and the flushing liquid for a patient according to the injection plan. Because the data in the injection plan are obtained by the consulting and calculating of the operator, human errors may occur in the consulting and calculating processes, so that a certain medical risk exists in the high-pressure injection process. In addition, in the injection process, in order to obtain a better image effect, the injection rate of the contrast agent is generally higher, so that the pain of the patient is more obvious.

Disclosure of Invention

In order to solve the problems of the prior art, the present invention aims to provide an injection method and an injection device for automatically generating an injection plan.

The invention relates to an injection method for automatically generating an injection plan, which comprises the following steps:

s0, inputting patient information through a human-computer interaction unit;

s1, automatically searching a pre-stored table according to the input patient information to obtain injection parameters;

s2, calculating the contrast agent injection amount V1 according to the patient information and the injection parameters;

s3, generating an injection plan according to the injection parameters and the contrast agent injection amount V1;

s4, injecting contrast medium according to the injection plan;

and S5, injecting the flushing liquid according to the injection plan.

Preferably, the patient information includes the weight W of the patient, the scanning site of the patient and the basal serum creatinine of the patient; the injection parameters comprise a contrast agent injection coefficient K1, a contrast agent injection rate S1, a flushing liquid injection amount V2 and a flushing liquid injection rate S2; the injection schedule includes an injection sequence of contrast and flush, a contrast injection volume V1, a contrast injection rate S1, a flush injection volume V2, and a flush injection rate S2.

Preferably, the contrast injection rate S1 is a variable, and the variation curve thereof includes three segments, the first segment is a linear ascending segment; the second section is a fluctuation section, the fluctuation curve of the fluctuation section is a sine curve, and the fluctuation period of the fluctuation curve is adapted to the heartbeat frequency; the third section is an exponential function section.

Preferably, a contrast injection amount threshold is set, and an error warning is issued when the value of the contrast injection amount V1 is greater than the contrast injection amount threshold.

An apparatus for automatically generating an injection plan comprises a control end and an injection end; the control end is used for inputting patient information, calculating to obtain contrast agent injection amount V1 according to the input patient information and the input injection parameters, automatically generating an injection plan according to the input injection parameters and the contrast agent injection amount V1, and sending the injection plan to the injection end; the injection end is used for injecting contrast agent and flushing liquid according to the received injection plan.

Preferably, the control end comprises a human-computer interaction unit, a memory and a first processor; the first processor is respectively electrically connected with the human-computer interaction unit and the memory and used for automatically generating an injection plan according to the input patient information and sending the generated injection plan to the injection end.

Preferably, a recommended dosage table of the contrast agent is stored in the memory.

Preferably, the control end and the injection end are both provided with communication interfaces for information interaction between the first processor and the second processor.

Preferably, the injection end comprises a second processor, a power mechanism and an injection mechanism; the second processor is respectively electrically connected with the power mechanism and the injection mechanism and is used for controlling the power mechanism and the injection mechanism to inject the contrast agent and the flushing liquid according to an injection plan; the power mechanism is electrically connected with the injection mechanism and is used for driving the injection mechanism to inject the contrast agent and the flushing liquid.

The injection method and the injection equipment for automatically generating the injection plan have the advantages that the injection plan can be automatically generated according to the patient information only by inputting the patient information, and the injection plan does not need to be manually consulted and calculated; human errors which may occur in the process of generating the injection plan are reduced, potential medical risks are reduced, and the safety of patients in the injection process is improved; and simultaneously, the workload of operators is reduced. The control of the injection liquid amount of the contrast agent is accurate, the developing effect is ensured, and meanwhile, the dosage of the contrast agent can be saved, so that the economic burden of a patient is reduced. And the injection amount of the contrast agent is limited in the injection process, so that the injection amount of the contrast agent is kept in a safe range, and the risk of contrast agent nephropathy is reduced. The contrast agent injection rate is variable, so that the pain of a patient can be reduced as much as possible while a good image effect is obtained.

Drawings

Fig. 1 is a schematic structural diagram of an apparatus for automatically generating an injection plan according to the present invention.

Fig. 2 is a second schematic structural diagram of an apparatus for automatically generating an injection plan according to the present invention.

Fig. 3 is a contrast injection rate-time image of an injection method of the present invention that automatically generates an injection plan.

Description of reference numerals: 1-control end, 2-injection end.

Detailed Description

The invention relates to an injection method for automatically generating an injection plan. The method comprises the following steps:

inputting patient information through a man-machine interaction unit;

automatically searching a pre-stored table according to the input patient information to obtain injection parameters;

calculating the contrast agent injection quantity V1 according to the patient information and the injection parameters;

generating an injection plan according to the injection parameters and the contrast agent injection quantity V1;

injecting contrast agent according to an injection plan;

the flush solution is injected according to the injection schedule.

The injection method for automatically generating the injection plan is different from the traditional injection method, an operator does not need to consult and calculate all data to form the injection plan, the operator only needs to input patient information, the injection method for automatically generating the injection plan can automatically look up the table and calculate to obtain an accurate injection plan, and contrast agent and flushing liquid are injected to the patient according to the injection plan. According to the patient information, the injection plan can be generated by consulting and calculating by oneself without manually consulting and calculating the input injection plan; human errors which may occur in the process of generating an injection plan are reduced to the maximum extent, potential medical risks are reduced, and the safety of patients in the injection process is improved; and simultaneously, the workload of operators is reduced. The control of the injection liquid amount of the contrast agent is accurate, the developing effect is ensured, and meanwhile, the dosage of the contrast agent can be saved, so that the economic burden of a patient is reduced.

The patient information includes patient weight W, the patient's scan site and the patient's basal serum creatinine; the injection parameters include a contrast injection coefficient K1, a contrast injection rate S1, a flushing fluid injection amount V2, and a flushing fluid injection rate S2; the injection schedule includes an injection sequence of contrast and flush, a contrast injection volume V1, a contrast injection rate S1, a flush injection volume V2, and a flush injection rate S2. The method for calculating the amount V1 of the contrast agent injection comprises the following steps: calculating a theoretical contrast agent injection liquid quantity V3 and a maximum contrast agent injection liquid quantity Vmax, wherein the calculation formula of the theoretical contrast agent injection liquid quantity V3 is V3 which is the weight W of the patient and the contrast agent injection coefficient K1; the maximum injection volume Vmax of the contrast agent is calculated by the formula that Vmax is 5ml multiplied by the weight W of the patient/the basic serum creatinine; comparing the values of the theoretical contrast injection liquid quantity V3 and the maximum contrast injection liquid quantity Vmax, and if the value of the theoretical contrast injection liquid quantity V3 is smaller than the value of the maximum contrast injection liquid quantity Vmax, the value of the contrast injection liquid quantity V1 is equal to the theoretical contrast injection liquid quantity V3; if the value of the theoretical contrast medium injection amount V3 is greater than the maximum contrast medium injection amount Vmax, the value of the contrast medium injection amount V1 is equal to the maximum contrast medium injection amount Vmax. The injection plan is automatically generated by the equipment according to the patient information and the relevant tables, does not need manual calculation input, and is more accurate and reasonable. The maximum injection liquid volume Vmax of the contrast agent is obtained by calculating the body weight W of the patient, and the injection liquid volume V1 of the contrast agent is smaller than or equal to the maximum injection liquid volume Vmax of the contrast agent, so that the injection liquid volume of the contrast agent is in a relatively safe liquid volume range, and the safety of the injection process is improved.

As shown in fig. 3, the contrast injection rate S1 is a variable, and the variation curve includes three segments, the first segment is a linear ascending segment; the second section is a fluctuation section, the fluctuation curve of the fluctuation section is a sine curve, and the fluctuation period of the fluctuation curve is adapted to the heartbeat frequency; the third section is an exponential function section. The reason that the injection rate S1 of the contrast agent fluctuates in a wave shape in the injection process is to be matched with the blood pressure of a human body for injection, the numerical value of the injection rate S1 of the contrast agent is lower when the heart contracts high blood pressure, the numerical value of the injection rate S1 of the contrast agent is higher when the heart stretches low blood pressure, and the contrast agent injection process is matched with the blood pressure of the human body, so that the contrast agent can enter the tissues of the human body more easily, and the pain of a patient in the injection process is reduced; the amplitude of the up-and-down fluctuation of 5% S1 makes the amplitude of the change in the contrast injection rate S1 small. When the injection amount reaches 70% of the contrast injection amount V1, the contrast injection rate S1 tends to decrease exponentially. In the prior injection process, in order to obtain a good image effect, the contrast injection rate in the prior injection process is always kept at a high value continuously during the injection process, and is subjected to a short acceleration process and a short deceleration process at the beginning and the end of the injection process respectively. The pain of the patient is obvious by the injection method. In the actual injection process, along with the continuous injection of the contrast agent, the concentration of the contrast agent in human tissues is gradually improved, the image effect of a human body is gradually clear, the injection rate can be gradually reduced at the rear section of the injection process, and the pain of a patient is reduced while the image effect is ensured.

And setting a contrast agent injection amount threshold value, and giving out an error warning when the value of the contrast agent injection amount V1 is larger than the contrast agent injection amount threshold value. The value of the contrast agent injection amount V1 is equal to the value of the contrast agent theoretical injection amount V3 or the contrast agent maximum injection amount Vmax. Both values were calculated from the patient weight W. The weight W of the patient has a reasonable value range, and as a general condition, the value of the weight W of the patient is less than 300 kg. When the generated injection plan is calculated by the W value larger than 300kg, the equipment judges that the value is abnormal or the value is obtained by error operation, and sends out an error warning to prompt an operator, and the operator can inject the injection only by confirming the value again. The theoretical injection liquid amount V3 of the contrast agent and the maximum injection liquid amount Vmax of the contrast agent are both calculated values, the calculated values are obtained by calculating the weight W of the patient, the threshold value of the injection liquid amount of the contrast agent is a preset value, and the value is the calculated value of Vmax when the weight of the patient is 300 kg. The contrast agent injection amount threshold is set, so that the device does not perform injection when an operator inputs the contrast agent by mistake or operates abnormally, the operator is prompted, and the safety in the injection process is improved.

The device for applying the injection method for automatically generating the injection plan comprises acontrol end 1 and aninjection end 2; thecontrol end 1 is used for inputting patient information, calculating to obtain contrast agent injection amount V1 according to the input patient information and injection parameters, automatically generating an injection plan according to the injection parameters and the contrast agent injection amount V1, and sending the injection plan to theinjection end 2; in theinjection end 2 for injecting contrast agent and flushing fluid according to the injection plan received.

Thecontrol terminal 1 is arranged outside the scanning chamber and comprises a man-machine interaction unit, a first processor, a memory and a communication interface. The first processor is electrically connected with the man-machine interaction unit, the memory and the communication interface respectively. The man-machine interaction unit comprises a keyboard and a touch display screen. The keypad is used to input patient information to the first processor. The touch screen is used for displaying relevant data information and simultaneously can be used for inputting patient information to the first processor. The first processor is MCU1, the memory is SDRAM, and the SDRAM stores the recommended table of the dosage of the contrast agent. Patient information is first entered using a keyboard or touch screen display. And the first processor accesses the SDRAM to search a contrast agent dosage recommendation table according to the recorded patient information to obtain a corresponding contrast agent injection coefficient K1, a contrast agent injection rate S1, a flushing liquid injection amount V2 and a flushing liquid injection rate S2. Then calculating a value for obtaining the contrast agent injection quantity V1. At this time, the first processor obtains the numerical values of the contrast injection amount V1, the contrast injection rate S1, the flushing fluid injection amount V2 and the flushing fluid injection rate S2 through a look-up table and calculation. The obtained numerical values are attached to the injection sequence to automatically generate an injection plan, and the injection plan is sent to theinjection end 2 through the communication interface.

Theinjection end 2 comprises a second processor, a communication interface, a power mechanism and an injection mechanism. The second processor is electrically connected with the communication interface, the power mechanism and the injection mechanism respectively. The communication interface is used for information interaction with thecontrol terminal 1 and is mainly used for receiving an injection plan sent by thecontrol terminal 1. The second processor is a MCU2 for controlling the power mechanism and the injection mechanism to inject the contrast media and the flush fluid according to the injection schedule received. The power mechanism comprises a driving unit and a transmission unit, and the tail end of the injection mechanism is connected with the injection syringe. The drive unit and the transmission unit adjust the position and the angle of an injection syringe of an injection mechanism, and the injection mechanism is used for injecting contrast medium and flushing liquid for a patient. The second processor controls the power mechanism and the injection mechanism according to the received injection plan, and injects the contrast media and the flush fluid into the patient according to the injection plan.

The invention relates to a device for automatically generating an injection plan, which is provided with a first processor, a memory and a second processor. When the device for automatically generating the injection plan is used, an operator only needs to input patient information to automatically generate an accurate injection plan through table look-up and calculation, and contrast agent and flushing liquid are injected to a patient according to the injection plan. An injection plan is automatically generated, and the injection plan is input without manual reference and calculation; human errors which may occur in the process of generating an injection plan are reduced to the maximum extent, potential medical risks are reduced, and the safety of patients in the injection process is improved; and simultaneously, the workload of operators is reduced.

The operating principle of the injection method and the injection equipment for automatically generating the injection plan is as follows: the device inputs patient information in a keyboard input mode and a touch display screen input mode; the first processor generates an injection plan from the entered patient information and transmits the injection plan to the second processor. The second processor injects contrast and a flush fluid for the patient according to the received injection plan. According to the injection method and the injection equipment for automatically generating the injection plan, the injection plan can be automatically generated according to the patient information only by inputting the patient information, and the injection plan is not required to be manually consulted and calculated; human errors which may occur in the process of generating an injection plan are reduced to the maximum extent, potential medical risks are reduced, and the safety of patients in the injection process is improved; and simultaneously, the workload of operators is reduced. The injection amount of the contrast agent is limited in the injection process, so that the injection amount of the contrast agent is kept in a safe range, and the risk of occurrence of the contrast agent nephropathy is reduced. The control of the injection liquid amount of the contrast agent is accurate, the developing effect is ensured, and meanwhile, the dosage of the contrast agent can be saved, so that the economic burden of a patient is reduced. The contrast agent injection rate is variable, so that the pain of a patient can be reduced as much as possible while a good image effect is obtained.

It will be apparent to those skilled in the art that various other changes and modifications may be made in the above-described embodiments and concepts and all such changes and modifications are intended to be within the scope of the appended claims.

Claims

1. An apparatus for automatically generating an injection plan, characterized by comprising a control end (1) and an injection end (2); the control end (1) is used for inputting patient information, calculating to obtain contrast agent injection amount V1 according to the input patient information and the input injection parameters, automatically generating an injection plan according to the input injection parameters and the contrast agent injection amount V1, and sending the injection plan to the injection end (2); the injection plan includes an injection sequence of contrast and flush, a contrast injection volume V1, a contrast injection rate S1, a flush injection volume V2, and a flush injection rate S2; the contrast agent injection rate S1 is a variable, the change curve of the contrast agent injection rate S1 comprises three sections, and the first section is a linear ascending section; the second section is a fluctuation section, the fluctuation curve of the fluctuation section is a sine curve, the fluctuation period of the fluctuation curve is adaptive to the heartbeat frequency, and the fluctuation amplitude of the fluctuation section is 5% S1; the third section is an exponential function section; the injection end (2) is used for injecting contrast agent and flushing liquid according to the received injection plan.

2. An apparatus for automatically generating an injection plan according to claim 1, characterized in that the control terminal (1) comprises a human-machine interaction unit, a memory and a first processor; the first processor is respectively and electrically connected with the human-computer interaction unit and the memory and is used for automatically generating an injection plan according to the input patient information and sending the generated injection plan to the injection end (2).

3. An apparatus for automatically generating an injection plan according to claim 2, wherein a recommended contrast media dosage table is stored in said memory.

4. An apparatus for automatically generating an injection plan according to claim 2, characterized in that the injection end (2) comprises a second processor, a power mechanism and an injection mechanism; the second processor is respectively electrically connected with the power mechanism and the injection mechanism and is used for controlling the power mechanism and the injection mechanism to inject the contrast agent and the flushing liquid according to an injection plan; the power mechanism is electrically connected with the injection mechanism and is used for driving the injection mechanism to inject the contrast agent and the flushing liquid.

5. An apparatus for automatically generating an injection plan according to claim 4, characterized in that the control end (1) and the injection end (2) are provided with communication interfaces for information interaction between the first processor and the second processor.