An automatic injection device and a control system

Abstract

The present invention discloses an automatic injection device and a control system, and creatively proposes to improve the control system to precisely control the needle pushing, medicine pushing and the residence time of the needle under sufficient negative pressure, effectively reducing the occurrence of liquid leakage, effectively solving the technical problems of serious liquid leakage of the needle of the traditional injection device, resulting in poor stability of injection accuracy; there is a large deviation between the actual injection volume into the body and the target injection volume, and a large cumulative error is formed in subsequent injections; reducing the injection pain, effectively improving the treatment effect, and having a better customer experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of syringes, and particularly relates to an automatic injection device and a control system. Background Art

[0002] In the prior art, for example, a patent CN105979987A discloses an injection device and method, which mainly relies on vacuum suction pressure. When the needle assembly is pressed against the skin, an injection operation is performed, so that a predetermined amount of drug can be injected. After the injection of the predetermined amount of drug is completed, the suction pressure is released, and the needle assembly is controlled to leave. In this way, it can meet the requirement that the operator does not perform additional operations on the injection device, and the injection device performs automatic injection after sensing the vacuum suction pressure. This can reduce the fatigue of the operator, correctly inject according to the predetermined amount of drug, adjust the vacuum suction pressure, and prevent blood stasis on the skin; the injection method and device mainly achieve the above automatic injection function through an injection machine composed of a motor and a screw for controlling the forward and backward movement of the piston of the syringe and the injection device of the main body for drug injection.

[0003] However, in the above injection device, the needle is directly pulled out after injection, which will cause liquid leakage from the needle, resulting in poor injection accuracy; there is a deviation between the actual injection volume into the body and the target injection volume, and a large cumulative error is formed in subsequent injections; in addition to affecting the uniformity of the injection volume throughout the injection process, it also increases the injection pain, the treatment effect is not obvious, and the customer experience is poor. Summary of the Invention

[0004] In order to solve the problems of serious liquid leakage from the needle and deviation in injection volume existing in the existing injection equipment and injection methods, the present invention provides an automatic injection device and an automatic injection control system.

[0005] The technical solution of the present invention is as follows:

[0006] The present invention discloses an automatic injection control system, including:

[0007] An injection data acquisition module: used to collect injection data information of the automatic injection device, and the injection data information includes fixed parameter data information of the current injection device, set parameter data information of the current pre-injection, and basic patient information;

[0008] An injection data calculation module: used to calculate and obtain injection matching data required for the current injection according to the collected injection data information, and provide the calculated data to the control terminal module. The control terminal module sends a control instruction to the injection control execution module to perform the current injection operation. The current injection matching data includes the needle pushing duration T1, the drug pushing duration T2, and the needle staying duration T3, where the needle staying duration T3 > ΔT + T2, and ΔT is the time difference from stopping needle pushing to starting drug pushing.

[0009] Among them, the calculation formula for the needle pushing duration T1 is as follows:

[0010]

[0011] The calculation formula for the needle pushing duration T2 is as follows:

[0012]

[0013] The calculation method for the needle staying duration T3 is as follows:

[0014] T3 = ΔT + T2 + T δ ;

[0015] Among them, ΔT is the time interval from stopping needle pushing to starting drug injection; T δ is the needle retention duration from stopping drug injection to starting to pull out the needle;

[0016] T δ The specific calculation expression of is as follows:

[0017]

[0018] Among them, M 注 is the total dose value of the target drug for the current pre - injection, M 标 is the standard injection dose value of the target drug for patients in the corresponding age group given by the system according to empirical values, G 注 is the weight value of the current patient, G 标 is the standard weight value of patients in the corresponding age group given by the system according to empirical values, k is the injection site influence coefficient given by the system according to empirical values, is the standard needle retention duration from stopping drug injection to starting to pull out the needle for injecting the target drug in the corresponding age group given by the system according to empirical values under the standard injection dose M 标 ;

[0019] Injection control execution module: used to receive the control instruction of the control terminal and execute the automatic injection operation;

[0020] Control terminal module: used for input of injection data, data judgment, data storage, sending of automatic injection instructions and display of data information, receiving the data information sent by the injection data acquisition module and / or the injection data calculation module, and completing the active injection work.

[0021] Furthermore, the fixed parameter data information includes: the standard injection dose value M 标 of the target drug for patients in the corresponding age group given by the system according to empirical values, the standard injection dose M 标The standard needle retention time from stopping drug injection to starting to pull out the needle The standard weight value G of the patient in the corresponding age group given by the system based on empirical values 标 , the cross-sectional area S inside the syringe;

[0022] The set parameter data information and the basic patient information include: the patient's current age Y, the patient's current weight value G 注 , the patient's gender, the total dose M of the target drug to be pre-injected this time 注 , the pre-injection depth H1 this time, the set pre-injection speed V1 this time, the set drug injection speed V2 this time, the selected current age group of the patient, and the injection site influence coefficient k given by the system based on empirical values.

[0023] Further, the patient age groups are divided into children, adults, and the elderly. Among them, the age of children is 6 - 14 years old, with each year corresponding to an age group; the age group of adults is 15 - 60 years old, and the age group of the elderly is 60 years old and above. The system stores the standard injection dose values M of the target drugs for injection corresponding to different genders and different age groups based on historical empirical values 标 , the standard weight value G 标 , the standard needle retention time After inputting the current patient's age, gender, and weight information, the system automatically gives the corresponding standard values.

[0024] Further, the injection site influence coefficient k is specifically as follows: the k value for the abdomen is 1, the k value for the upper arm is 1.1, and the k values for the outer thigh and buttocks are 1.2.

[0025] Further, the control terminal module of the automatic injection control system includes a receiving unit, an input and display unit, a judgment unit, a sending unit, and a data storage unit,

[0026] The receiving unit is used to receive the data information sent by the injection data acquisition module and the injection data calculation module, and transfer the information to the input and display unit and / or the judgment unit;

[0027] The input and display unit is used for inputting and real-time displaying injection data information;

[0028] The judgment unit is used to receive the data information sent by the receiving unit and perform data judgment, send corresponding control instructions according to the judgment results, and display the corresponding judgment results to the input and display unit for display;

[0029] The sending unit is used to send control instructions to the injection control execution module to perform automatic injection operations;

[0030] The data storage unit is used to store the fixed parameter data information of the injection device, the set parameter data information of the current pre-injection, and the input basic patient information.

[0031] Specifically, the stored information in the data storage unit includes:

[0032] Store the fixed parameter data, including: the standard injection dose value M of the target drug for patients in the current age group given by the system according to empirical values 标 The standard residence time of the needle from stopping pushing the drug to starting to pull out the needle under the standard injection dose M of the target drug for injection in the current age group given by the system according to empirical values 标 The standard weight value G of patients in the current age group given by the system according to empirical values 标 The internal cross-sectional area S of the syringe;

[0033] Store the collected set parameter data information and basic patient information, including: the current age Y of the patient, the current weight value G of the patient 注 The gender of the patient, the total dose M of the target drug for the current pre-injection 注 The current pre-pushing depth H1 of the injection, the set pre-pushing speed V1 of the injection, the set pre-pushing drug speed V2 of the injection, the selected current age group of the patient, the influence coefficient k of the injection site given by the system according to empirical values;

[0034] The present invention also provides an automatic injection device, which includes the above-mentioned automatic injection control system, and further includes:

[0035] An injection system,

[0036] The injection system includes a multi-needle injection head, a syringe, a piston, a driving component and a housing. The multi-needle injection head is arranged at one end of the housing, and one end of the multi-needle injection head is connected to one end of the syringe. The piston is arranged at the other end of the syringe. The driving component includes a needle-pushing motor, a drug-pushing motor, a needle-pushing screw and a drug-pushing screw. The needle-pushing motor is drivingly connected to the needle-pushing screw, the needle-pushing screw is connected to the multi-needle injection head, the drug-pushing motor is drivingly connected to the drug-pushing screw, the drug-pushing screw is connected to the piston, and the syringe, the piston and the driving component are all arranged in the housing;

[0037] A negative pressure system, the negative pressure system includes a double-headed balanced negative pressure air pump and a solenoid valve. The double-headed balanced negative pressure air pump is connected to the injection system, and the solenoid valve is connected to one end of the double-headed balanced negative pressure air pump;

[0038] A sound insulation system, the sound insulation system includes a shock pad arranged under the double-headed balanced negative pressure air pump and a buffer bottle connected to the other end of the double-headed balanced negative pressure air pump.

[0039] ​The beneficial effects of the present invention are as follows:

[0040] (1) In the technical solution of the present invention, it is creatively found that the current automatic injection control has technical deficiencies such as inaccuracy and liquid leakage, and a targeted solution is creatively proposed. Specifically, through the improvement of the control program and algorithm, the pushing of the needle, the pushing of the medicine, and the control of the needle staying time under sufficient negative pressure are precisely controlled, effectively reducing the occurrence of liquid leakage.

[0041] (2) A control time model is built based on accurate empirical values for different people, age groups, genders, and injection sites for the needle staying duration T3. Specifically, standard empirical values are introduced and a database is formed for the control algorithm to calculate and obtain, realizing more precise control of automatic injection and effectively avoiding the problem of leakage of the injection solution.

[0042] The technical solution provided by the present invention effectively solves the technical problems of the traditional injection device, such as serious liquid leakage of the needle, resulting in poor stability of injection accuracy; there is a large deviation between the actual injection volume into the body and the target injection volume, and a large cumulative error is formed in subsequent injections; reduces the injection pain, effectively improves the treatment effect, and has a better customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a flowchart of an automatic injection control method of the present invention;

[0044] Figure 2 is a schematic structural diagram of an injection system of an automatic injection device of the present invention;

[0045] Figure 3 is a schematic structural diagram of a negative pressure system and a silencing system of an automatic injection device of the present invention;

[0046] Figure 4 is a schematic overall structural diagram of an automatic injection device of the present invention;

[0047] Reference numerals: 1, injection system; 11, multi - needle injection head; 12, syringe tube; 13, piston; 14, drive assembly; 141, needle - pushing motor; 142, medicine - pushing motor; 143, needle - pushing screw; 144, medicine - pushing screw; 2, negative pressure system; 21, double - head balanced negative pressure air pump; 22, solenoid valve; 3, silencing system; 31, shock - absorbing pad; 32, buffer bottle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0049] The difference between a multi - needle syringe and a single - needle syringe is that the liquid medicine in its syringe barrel needs to be injected in multiple times and different positions need to be moved for injection; in the existing multi - needle syringes, there is still the problem of liquid leakage from the needles during the injection process. During the process of finding the cause, it is found that by controlling the residence time of the needles, the problem of needle liquid leakage can be effectively reduced.

[0050] Referring to Figure 1 , the present invention provides an automatic injection control method, which includes the following steps:

[0051] S1: Collect injection data information:

[0052] The injection data includes the fixed parameter data information already set by the system of the current injection device, the parameter data to be set by the injection personnel for the current pre - injection, and the basic patient information related to the extraction of the current injection data information; the fixed parameter data to be collected in step S1 includes: the standard injection dose value M of the target drug for patients in the corresponding age group given by the system according to empirical values 标 , the standard residence time of the needle from stopping pushing the medicine to starting to pull out the needle under the standard injection dose M of the target drug for injection in the corresponding age group given by the system according to empirical values 标 the standard weight value G of patients in the corresponding age group given by the system according to empirical values the cross - sectional area S inside the syringe barrel; 标

[0053] The set parameter data information and patient basic information to be collected include: the current age Y of the patient, the current weight value G of the patient 注 , the gender of the patient, the total dose M of the target drug for the current pre - injection 注 , the current pre - injection depth H1, the set pre - injection speed V1 of the current injection, the set pre - injection speed V2 of the current injection, the selected current age group of the patient, the influence coefficient k of the injection site given by the system according to empirical values;

[0054] Furthermore, the patient age groups are divided into children, adults, and the elderly. Among them, the age of children is 6 - 14 years old, each year corresponding to an age group; the adult age group is 15 - 60 years old, and the elderly age group is those over 60 years old. The system stores, according to historical empirical values, the standard injection dose value M of the target drug for injection corresponding to different genders and different age groups of people 标 , the standard weight value G 标 , the standard residence time of the needle After inputting the current patient age, gender, and weight information, the system automatically gives the corresponding standard values.

[0055] The standard weights for boys aged 6-14 are as follows: 21.2kg for six years old, 24.6kg for seven years old, 27.4kg for eight years old, 30.2kg for nine years old, 34.2kg for ten years old, 37.8kg for 11 years old, 12.1kg for 12 years old, 18kg for 13 years old, and 52.4kg for 14 years old;

[0056] The standard weight for girls aged 6-14 is: 20kg for six years old, 23.1kg for seven years old, 25.4kg for eight years old, 28.9kg for nine years old, 32.8kg for 10 years old, 37.3kg for 11 years old, 41.5kg for 12 years old, 45.51kg for 13 years old, and 47.9kg for 14 years old.

[0057] Furthermore, the injection site influence coefficient k is as follows: the k value of the abdomen is 1.0, the k value of the upper arm is 1.1, and the k value of the outer thigh and buttocks is 1.2.

[0058] For example, the order of insulin absorption speed at injection sites, from fastest to slowest, is the abdomen, upper arm, outer thigh, and buttocks. This is mainly because these sites are covered by a layer of subcutaneous fat tissue that can absorb insulin, and there are not many nerve distributions, so the discomfort during injection is relatively less. The abdomen is the preferred site for insulin injection, not only because it has a high absorption rate, but also a fast absorption speed. At the same time, because the subcutaneous tissue in the abdomen is relatively thick, it can reduce the risk of injection into the muscle layer. Secondly, when injecting insulin in the upper arm, choose the middle 1 / 3 of the side or back where the subcutaneous tissue is thicker, which is conducive to insulin absorption. The outer thigh and buttocks have the slowest absorption speed. Therefore, for different injection sites, different needle retention times after drug injection are used to ensure that the negative pressure is released only after the drug is completely absorbed, to avoid drug overflow caused by negative pressure release.

[0059] S2: Calculate and obtain the matching data of the current injection:

[0060] Based on the injection data information collected in step S1, the matching data of the current injection is calculated and obtained, and the matching data of the current injection includes the needle pushing time T1, the medicine pushing time T2 and the needle stay time T3, wherein it is necessary to ensure that the needle stay time T3>ΔT+T2, wherein ΔT is the time difference from stopping the needle pushing to starting the medicine pushing; considering that the purpose of this operation is to accurately study and segment the role of each part in the entire automatic injection process and the root cause of the previous leakage and overall infusion deviation, the problem is solved through timeline analysis.

[0061] S3: The control system performs the drug injection operation

[0062] According to the data information obtained in steps S1 and S2, perform the operations of extracting negative pressure, pushing the needle, and pushing the medicine in sequence until the injection of the predetermined dose of medicine is completed, and then end the medicine-pushing operation; among them, the operation of extracting negative pressure is similar to the existing operation of extracting negative pressure and belongs to the existing operation authorization, so it will not be elaborated here. The operations of pushing the needle and pushing the medicine themselves also belong to the category of conventional operations and do not belong to the innovation points of this invention, so they will not be introduced in detail. For example, control the start of the air pump, and after extracting a certain negative pressure, judge whether the current negative pressure value is equal to the preset air pressure value. If so, control the pushing of the needle to perform the injection operation.

[0063] S4: Post-injection operation

[0064] After completing the medicine-pushing operation in step S3, the needle continues to stay for a preset time T δ , where T δ is the residence time of the needle from stopping pushing the medicine to starting to pull out the needle; reserving this residence time is to perform the decompression operation and the needle-pulling operation in sequence for the medicine to be fully absorbed in the body. This part is one of the important innovation points. Through repeated experimental research, it can be confirmed that controlling the residence time after pushing the medicine can effectively reduce the risk of liquid leakage and improve the overall medication accuracy.

[0065] The specific calculation method of the needle residence time T3 in this embodiment of the solution is as follows:

[0066] T3 = ΔT + T2 + T δ ;

[0067] where T δ is the residence time of the needle from stopping pushing the medicine to starting to pull out the needle.

[0068] Calculating and obtaining the matching data for the current injection includes:

[0069] Calculating and obtaining the needle-pushing time T1, the medicine-pushing time T2, and the needle residence time T3.

[0070] Furthermore, the calculation formula of the needle-pushing time T1 is as follows:

[0071]

[0072] The calculation formula of the medicine-pushing time T2 is as follows:

[0073]

[0074] The calculation method of the needle residence time T3 is as follows:

[0075] T3 = ΔT + T2 + T δ ;

[0076] where ΔT is the time interval from stopping pushing the needle to starting to push the medicine; T δThe needle retention time from the stop of drug injection to the start of needle withdrawal;

[0077] T δ The specific calculation expression is as follows:

[0078]

[0079] Among them, M 注 is the total dose of the target drug injected at that time, M 标 G is the standard injection dose value of the target drug for patients of the same age group given by the system based on the experience value. 注 is the current patient's weight, G 标 is the standard weight value of patients in the same age group given by the system based on experience, k is the injection site influence coefficient given by the system based on experience, The system is based on the experience value of the target drug injection in the age group at the standard injection dose M 标 The standard retention time of the needle from the stop of drug injection to the start of needle withdrawal under this condition. This algorithm creatively uses empirical data, that is, for the target commonly used drugs, we repeatedly conduct time analysis, taking age, weight and injection site as the three factors that most affect the absorption rate of injected drugs as the starting point, and introduce empirical data M 标 , G 标 , k and The needle retention time T from stopping the drug injection to starting the needle withdrawal was constructed. δ The algorithm model is ultimately used to obtain data on the needle residence time T3 that is more in line with the differentiated needs of different individuals, providing key data support for solving the technical problems of this program.

[0080] The present invention also discloses an automatic injection control system for executing the above-mentioned automatic injection control method. The system specifically comprises:

[0081] Injection data acquisition module:

[0082] Used to collect data information of the automatic injection device, the injection data includes the fixed parameter data information of the current injection device, the set parameter data of the current pre-injection and the basic information of the patient;

[0083] Injection data calculation module:

[0084] It is used to calculate and obtain the matching data required for the current injection based on the collected injection data information, and provide the calculated data to the control terminal module. The control terminal module sends a control instruction to the injection control execution module to perform the current injection operation. The matching data for the current injection includes the needle pushing duration T1, the drug pushing duration T2, and the needle staying duration T3, where the needle staying duration T3 > ΔT + T2, and ΔT is the time difference from stopping the needle pushing to starting the drug pushing; by controlling the needle staying time to be greater than the sum of the drug pushing duration and the time difference from stopping the needle pushing to starting the drug pushing, it is to ensure that enough time is left for the drug to diffuse in the muscle after the main program control is completed, reducing leakage.

[0085] Injection control execution module: It is used to receive the control instruction of the control terminal and perform an automatic injection operation;

[0086] Control terminal module: It is used for input of injection data, data judgment, data storage, sending of automatic injection instructions, and display of data information. It receives the data information sent by the injection data acquisition module and / or the injection data calculation module to complete the active injection work.

[0087] The control terminal module includes a receiving unit, an input and display unit, a judgment unit, a sending unit, and a data storage unit.

[0088] The receiving unit is used to receive the data information sent by the injection data acquisition unit and the injection data calculation unit, and transfer the information to the input and display unit and / or the judgment unit;

[0089] The input and display unit is used for input of injection information and real-time display of data information;

[0090] The judgment unit is used to receive the data information sent by the receiving unit and perform data judgment, send corresponding control instructions according to the judgment result, and display the corresponding judgment result to the input and display unit for display;

[0091] The sending unit is used to send a control instruction to the injection control execution unit to perform action control on the needle pushing motor, the drug pushing motor, the negative pressure system, and the sound insulation system, and perform an automatic injection operation;

[0092] The data storage unit is used to store the fixed parameter data information of the injection device, the set parameter data information of the current pre-injection, and the basic information of the input patient.

[0093] The specific storage information of the data storage unit includes:

[0094] Stored fixed parameter data, including: the standard injection dose value M of the target drug for patients in the corresponding age group given by the system according to empirical values 标The system gives the standard injection dose M of the target drug to be injected in the corresponding age group based on empirical values 标 The standard needle retention time from stopping drug injection to starting to pull out the needle at the standard injection dose M The standard weight value G of the patient in the corresponding age group given by the system based on empirical values 标 The cross-sectional area S inside the syringe

[0095] Store the collected set parameter data information and basic patient information, including: the patient's current age Y, the patient's current weight value G 注 The patient's gender, the total dose M of the target drug to be pre-injected this time 注 The pre-pushing needle depth H1 this time, the set pre-pushing needle speed V1 for this injection, the set pre-drug injection speed V2 for this injection, the selected current age group of the patient, and the injection site influence coefficient k given by the system based on empirical values

[0096] Further, the calculation method of the needle retention time T3 is as follows: T3 = ΔT + T2 + T δ ,

[0097] where T δ is the needle retention time from stopping drug injection to starting to pull out the needle

[0098] Further, the calculation formula of the needle pushing time T1 is as follows:

[0099]

[0100] Further, the calculation formula of the needle pushing time T2 is as follows:

[0101]

[0102] Further, the calculation method of the needle retention time T3 is as follows:

[0103] T3 = ΔT + T2 + T δ ;

[0104] where ΔT is the time interval from stopping needle pushing to starting drug injection; T δ is the needle retention time from stopping drug injection to starting to pull out the needle

[0105] Further, the specific calculation expression of T δ is as follows:

[0106]

[0107] where M 注 is the total dose value of the target drug to be pre-injected this time, and M 标 is the standard injection dose value of the target drug for needle injection of patients in the corresponding age group given by the system based on empirical values, and G注 is the weight value of the current patient, G 标 is the standard weight value of patients in the corresponding age group given by the system based on empirical values, and k is the injection site influence coefficient given by the system based on empirical values. is the standard injection dose M of the target drug at the corresponding age group given by the system based on empirical values. 标 is the standard needle retention duration from stopping drug injection to starting to pull out the needle under the standard injection dose M.

[0108] In one embodiment, for example, when injecting insulin into the abdomen, the value range of the needle retention duration T3 is generally 0.3 - 3 s. After the needle retention time ends, control the solenoid valve to cut off the power and release the pressure of the air pump. The pressure inside the syringe is released, and the pressure inside the syringe is balanced with the atmospheric pressure. Control the needle pushing motor to drive the needle to separate.

[0109] The present invention also provides an automatic injection device, which can execute the automatic injection control method of the present invention, including:

[0110] An injection system 1,

[0111] The injection system 1 includes a multi - needle injection head 11, a syringe tube 12, a piston 13, a driving component 14 and a housing 15. The multi - needle injection head 11 is arranged at one end of the housing 15, and one end of the multi - needle injection head 11 is connected to one end of the syringe tube 12. The piston 13 is arranged at the other end of the syringe tube 12. The driving component 14 includes a needle pushing motor 141, a drug pushing motor 142, a needle pushing screw 143 and a drug pushing screw 144. The needle pushing motor 141 is drivingly connected to the needle pushing screw 143, the needle pushing screw 143 is connected to the multi - needle injection head 11, the drug pushing motor 142 is drivingly connected to the drug pushing screw 144, the drug pushing screw 144 is connected to the piston 13, and the syringe tube 12, the piston 13 and the driving component 14 are all arranged inside the housing 15;

[0112] A negative pressure system 2, the negative pressure system 2 includes a double - head balanced negative pressure air pump 21 and a solenoid valve 22. The double - head balanced negative pressure air pump 21 is connected to the injection system 1, and the solenoid valve 22 is connected to one end of the double - head balanced negative pressure air pump 21;

[0113] A silencing system 3, the silencing system 3 includes a shock pad 31 arranged under the double - head balanced negative pressure air pump 21 and a buffer bottle 32 connected to the other end of the double - head balanced negative pressure air pump 21;

[0114] An automatic injection control system, the automatic injection control system includes an injection data acquisition unit, an injection data calculation unit, an injection control execution unit and a control terminal.

[0115] Among them, the injection data acquisition unit:

[0116] For collecting data information of an automatic injection device, the injection data includes fixed parameter data information of the current injection device, set parameter data of the current pre-injection, and basic patient information;

[0117] The injection data calculation unit:

[0118] For calculating and obtaining the matching data required for the current injection based on the collected injection data information, and providing the calculated data to the corresponding receiving unit, input and display unit, and judgment unit of the control terminal. The control terminal sends a control instruction to the injection control execution unit to perform the current injection operation. The matching data for the current injection includes the needle pushing duration T1, the drug pushing duration T2, and the needle staying duration T3, where the needle staying duration T3 > ΔT + T2, and ΔT is the time difference from stopping the needle pushing to starting the drug pushing;

[0119] The injection control execution unit may specifically be a controller: for receiving the control instruction of the control terminal, performing action control on the needle pushing motor, drug pushing motor, negative pressure system, and silencing system, and executing the automatic injection operation;

[0120] The control terminal, i.e., the micro control background of the device: for inputting injection data, sending automatic injection instructions, receiving data information sent by the injection data collection unit and / or the injection data calculation unit, and completing the active injection control work. The control terminal includes a receiving unit, an input and display unit, a judgment unit, a sending unit, and a data storage unit,

[0121] The receiving unit is used to receive the data information sent by the injection data collection unit, the injection data calculation unit, and send the information to the input and display unit and / or the judgment unit;

[0122] The input and display unit: for inputting injection information and real-time displaying data information;

[0123] The judgment unit is used to receive the data information sent by the receiving unit and perform data judgment, send corresponding control instructions according to the judgment result, and display the corresponding judgment result to the input and display unit for display;

[0124] The data storage unit is used to store the fixed parameter data information of the injection device, the set parameter data information of the current pre-injection, and the input basic patient information.

[0125] Refer to Figures 2 - 4 , the present invention also discloses a specific embodiment of an automatic injection device. The automatic injection device can execute the above automatic injection control method, including:

[0126] An injection system 1 includes a multi-needle injection head 11, a needle tube 12, a piston 13, a drive assembly 14, and a housing 15. The multi-needle injection head 11 is disposed at one end of the housing 15, and one end of the multi-needle injection head is connected to one end of the needle tube 12. The piston 13 is disposed at the other end of the needle tube 12 and includes a needle-pushing motor 141, a drug-pushing motor 142, a needle-pushing screw 143, and a drug-pushing screw 144. The needle-pushing motor 141 drives and connects the needle-pushing screw 143, the needle-pushing screw 143 is connected to the multi-needle injection head 11, the drug-pushing motor 142 drives and connects the drug-pushing screw 144, the drug-pushing screw 144 is connected to the piston 13, and the needle tube 12, the piston 13, and the drive assembly 14 are all disposed in the housing 15. The multi-needle injection head 11, the needle tube 12, and the piston 13 are detachable and replaceable parts.

[0127] The negative pressure system 2 includes a double-head balanced negative pressure air pump 21 and a solenoid valve 22. The double-head balanced negative pressure air pump 21 is connected to the injection system 1. The solenoid valve 22 is connected to one end of the double-head balanced negative pressure air pump 21. The double-head balanced negative pressure air pump 21 is used for negative pressure adsorption of the skin. The solenoid valve 22 can control the operation of the double-head balanced negative pressure air pump 21 and control the negative pressure to be turned off or on. The needle is inserted during the process of skin adsorption. The adsorption effect can reduce the direct stimulation of local nerve endings when the needle is inserted by pulling and dispersing the skin tissue, thereby alleviating pain; it can also promote local blood circulation and increase blood supply, thereby reducing local hypoxia and pain; it can also generate negative pressure on the skin surface, reduce skin tension, reduce resistance during needle insertion, and alleviate pain;

[0128] The silencer system 3 includes a shock-absorbing pad 31 located below the dual-head balanced negative pressure air pump 21 and a buffer bottle 32 connected to the other end of the dual-head balanced negative pressure air pump 21. Specifically, the air outlet of the dual-head balanced negative pressure air pump 21 is connected to the silencer, and the buffer bottle 32 is connected to the silencer. The buffer bottle is a container for storing gas or liquid and is made of steel, aluminum, or other materials. It stabilizes pressure, balances flow, and reduces vibration during the storage and transportation of gas or liquid, thereby further enhancing the silencer effect.

[0129] The technical solution of the present invention creatively discovers the technical deficiencies of current automatic injection control such as inaccuracy and leakage, and creatively proposes targeted solutions. Specifically, by improving the control program and algorithm, it accurately controls the needle pushing, drug pushing, and the needle residence time under sufficient negative pressure, thereby effectively reducing the occurrence of leakage.

[0130] The dwell time T3 of the needle is used to build a control time model based on precise empirical values for different people, age groups, genders, and injection sites. Specifically, standard empirical values are introduced and a database is formed to calculate the control algorithm, so as to achieve more precise control of automatic injection and effectively avoid the leakage problem of the injection solution.

[0131] The technical solution provided by the present invention effectively solves the technical problems of the traditional injection device, such as serious needle leakage, poor stability of injection accuracy, a large deviation between the actual injection volume into the body and the target injection volume, and a large cumulative error in subsequent injections. It reduces the injection pain, effectively improves the treatment effect, and also provides a better customer experience.

[0132] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An automatic injection control system, characterized in that: include: Injection data acquisition module: used to collect injection data information of the automatic injection device, the injection data information includes the fixed parameter data information of the current injection device, the set parameter data information of the current pre-injection and the basic information of the patient; Injection data calculation module: used to calculate and obtain the injection matching data required for the current injection based on the collected injection data information, and provide the calculated data to the control terminal module, which sends a control instruction to the injection control execution module to execute the current injection operation. The injection matching data includes the needle pushing time T1, the drug pushing time T2, and the needle dwell time T3, where the needle dwell time T3 is greater than ΔT+T2, where ΔT is the time difference from stopping the needle pushing to starting the drug pushing; The fixed parameter data information includes: the standard injection dose value M of the target drug for the patient of the same age group given by the system based on the empirical value 标 , The system injects the target drug in the standard injection dose M according to the experience value given by the age group 标 The standard needle retention time from stopping the drug injection to starting to pull out the needle The system gives the standard weight value G for patients of the same age group based on the empirical value 标 , the internal cross-sectional area of the needle tube S; The parameter data and patient basic information include: the patient's current age Y, the patient's current weight G 注 , patient gender, total dose M of target drug injected at that time 注 , the depth of the pre-needle push H1, the pre-needle push speed V1 set for the injection, the pre-drug push speed V2 set for the injection, the selected age group of the current patient, and the injection site influence coefficient k given by the system based on empirical values; The calculation formula for the needle pushing time T1 is as follows: The calculation formula for the needle pushing time T2 is as follows: The needle dwell time T3 is calculated as follows: T3=ΔT+T2+T δ ; Where ΔT is the time interval from stopping the needle to starting the drug injection; T δ The needle retention time from the stop of drug injection to the start of needle withdrawal; T δ The specific calculation expression is as follows: Among them, M 注 is the total dose of the target drug injected at that time, M 标 G is the standard injection dose value of the target drug for patients of the same age group given by the system based on experience. 注 is the current patient's weight, G 标 is the standard weight value of patients in the same age group given by the system based on experience, k is the injection site influence coefficient given by the system based on experience, The system is based on the experience value of the target drug injection in the age group at the standard injection dose M 标 The standard needle retention time from stopping the drug injection to starting to pull out the needle; Injection control execution module: used to receive control instructions from the control terminal and perform automatic injection operations; Control terminal module: used for inputting injection data, data judgment, data storage, sending automatic injection instructions and displaying data information, receiving data information sent by the injection data acquisition module and / or injection data calculation module, and completing active injection work.

2. The automatic injection control system according to claim 1, characterized in that: Patient age groups are divided into children, adults, and the elderly. Children are aged 6-14 years old, and each age group corresponds to an age group; adults are aged 15-60 years old, and the elderly are those over 60 years old. Based on historical experience, the system stores the standard injection dose value M of the target drug for different genders and age groups. 标 , standard weight value G 标 , standard needle retention time After entering the current patient's age, gender, and weight information, the system automatically gives the corresponding standard value.

3. The automatic injection control system according to claim 2, characterized in that: The injection site influence coefficient k is as follows: the k value of the abdomen is 1, the k value of the upper arm is 1.1, and the k value of the outer thigh and buttocks is 1.

2.

4. The automatic injection control system according to claim 1, characterized in that: The control terminal module of the automatic injection control system includes a receiving unit, an input and display unit, a judgment unit, a sending unit and a data storage unit. The receiving unit is used to receive data information sent by the injection data acquisition module and the injection data calculation module, and forward the information to the input and display unit and / or the judgment unit; The input and display unit is used for inputting and real-time displaying injection data information; The judgment unit is used to receive the data information sent by the receiving unit and perform data judgment, send corresponding control instructions according to the judgment result, and display the corresponding judgment result to the input and display unit for display; The sending unit is used to send a control instruction to the injection control execution module to perform an automatic injection operation; The data storage unit is used to store fixed parameter data information of the injection device, set parameter data information of the current pre-injection and input patient basic information.

5. An automatic injection device, characterized in that: The automatic injection control system according to any one of claims 1 to 4, further comprising: Injection system (1), negative pressure system (2), silencer system (3), The injection system (1) comprises a multi-needle injection head (11), a needle tube (12), a piston (13), a drive assembly (14) and a housing (15). The multi-needle injection head (11) is arranged at one end of the housing (15), and one end of the multi-needle injection head (11) is connected to one end of the needle tube (12). The piston (13) is arranged at the other end of the needle tube (12). The drive assembly (14) comprises a needle pushing motor (141), a medicine pushing motor (142), a medicine pushing motor (143), a medicine pushing motor (144), a medicine pushing motor (145), a medicine pushing motor (146), a medicine pushing motor (147), a medicine pushing motor (148), a medicine pushing motor (149), a medicine pushing motor (150), a medicine pushing motor (151), a medicine pushing motor (152), a medicine pushing motor (153), a medicine pushing motor (154), a medicine pushing motor (155), a medicine pushing motor (156), a medicine pushing motor (157), a medicine pushing motor (158), a medicine pushing motor (159), a medicine pushing motor (159), a medicine pushing motor (159), a medicine pushing motor (151), a medicine pushing motor (159), a medicine pushing motor (151), a medicine pushing motor (15 A needle screw (143) and a medicine pushing screw (144), wherein the needle pushing motor (141) drives and connects the needle pushing screw (143), the needle pushing screw (143) is connected to the multi-needle injection head (11), the medicine pushing motor (142) drives and connects the medicine pushing screw (144), the medicine pushing screw (144) is connected to the piston (13), and the needle tube (12), the piston (13) and the driving assembly (14) are all arranged in the housing (15); The negative pressure system (2) comprises a double-head balanced negative pressure air pump (21) and a solenoid valve (22), wherein the double-head balanced negative pressure air pump (21) is connected to the injection system (1), and the solenoid valve (22) is connected to one end of the double-head balanced negative pressure air pump (21); The silencing system (3) comprises a shock-absorbing pad (31) arranged below the double-head balanced negative pressure air pump (21) and a buffer bottle (32) connected to the other end of the double-head balanced negative pressure air pump (21).

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