CN112712872A

CN112712872A - Automatic injection device and using method thereof

Info

Publication number: CN112712872A
Application number: CN202011643430.7A
Authority: CN
Inventors: 查维祎; 常红; 翟琨
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-27

Abstract

The invention relates to an automatic injection device, which at least comprises an operational analysis unit and an automatic injection assembly connected with the operational analysis unit, wherein the operational analysis unit analyzes reasonable indexes of an injection scheme based on personal characteristic information, inquiry information, medical operation information of a patient and/or the injection scheme set by medical staff, the automatic injection assembly is fixed relative to the injection device in a fixed and automatic injection mode capable of automatically injecting the injection device under the condition that the injection scheme is not contradictory to the personal characteristic information, the inquiry information and/or the medical operation information of the patient, the automatic injection assembly determines an injection angle by the medical staff in an injection mode allowing single-hand operation, and the automatic injection assembly performs automatic injection under the condition that the medical staff starts the injection. The invention realizes reasonable setting of injection scheme by combining the operation analysis unit with manual injection.

Description

Automatic injection device and using method thereof

Technical Field

The invention relates to the technical field of injection, in particular to an automatic injection device and a using method thereof.

Background

Bolus injection is a method of administering small amounts or a single type of drug by intravenous injection using a syringe. However, for a particular drug, the timing and rate of the bolus needs to be determined according to the patient's condition. However, the drawbacks of manual bolus injection are: (1) the speed is not stable; (2) the injection cannot be completed in the required time. Relevant clinical cases are as follows.

Case one: a 68 year old patient with a clinical manifestation of abnormal mental performance: the symptom is that the user does not sleep for 24 hours, the door is opened when the user sees the room, and the user does not know the family when the user sees the room! For clear disease diagnosis, the exclusion of the relevant diseases requires a preliminary PET examination! Diazepam 1Omg bolus needs to be given before examination for more than 5 minutes! Three PET examinations were not successfully scheduled. The reason is that: the sedative dare not to be injected too much and is worried about causing side effects; and the PET developer exceeds the time limit after the drug acts! Namely, the prior art cannot accurately measure and calculate the safe dosage and the injection time.

Case two: the boy patient needs to perform lumbar puncture examination on the second day of admission, and the male patient does not cooperate with the female patient. The doctor administers diazepam in small doses, 5mg, for more than 5 minutes of intravenous bolus injection, prior to pre-examination. The uniform speed and precision of the 2.5ml liquid medicine can not be achieved easily by finishing the manual operation within 5 minutes on average. Moreover, diazepam is not additionally soluble in enzymes and can cause discoloration. In this case, too, the bolus speed cannot be accurately calculated and a uniform bolus can be realized.

Case three: patients of age 73, who were admitted to the hospital with lung infection, had received neurology as a cerebral infarction. The patient who is admitted to the hospital on the next day has rapid heart rate and rapid respiration and cough with pink foam sputum and has acute left heart failure with respiratory failure, and the intubation of the trachea is completed! Patient's tooth close dysphoria! Force 5mg hydrostatic push was given following the physician's advice, with 2.5mg bolus in the patient! Successful intubation! That is, current automatic bolus devices are not capable of automatically stopping a bolus based on changes in the patient's condition.

Based on above actual case, although there is the device of partial automatic injection in current prior art, current automatic injection device is all very huge, has also promoted the operation complexity, needs to additionally train medical personnel with regard to its using-way, can't allow medical personnel one hand to inject or stop under emergency, but also can consider observing patient state change. Furthermore, the bolus rate is related to the status of the patient, privacy disorders. When the patient's state of illness changes, the speed of the bolus injection cannot be analyzed through scientific calculation and the bolus injection is stopped in time. Therefore, there is a need for a bolus device that can allow a healthcare worker to operate with one hand and that can be portable, and whose bolus regimen needs to be scientifically analyzed to provide an auxiliary reference to the healthcare worker.

Patent document CN110913930A discloses a system and method of diabetes management with automatic basal and manual bolus insulin control. An exemplary system includes a delivery device, a glucose sensor, and a controller. The delivery device delivers insulin and the glucose sensor measures the glucose level of the subject. A basal insulin dose is calculated using a model predictive control algorithm and physiological data of the subject including desired glucose levels, amounts of insulin delivered, and measured glucose levels. The subject initiates a manual bolus insulin dose. The manual bolus insulin dose is modified based on one or both of a model predictive control algorithm and physiological data of the subject. A total insulin dose is determined based on the modified manual bolus insulin dose and the calculated basal insulin dose and delivered to the subject. Although the injection device can automatically inject and manually inject certain medicines, the problem of convenient operation of medical staff is not considered, for example, the injection angle is adjusted according to the body micromotion of a patient, and the injection device is not suitable for injecting mental control medicines and needs to adjust the injection speed at any time according to the state change of the patient. In addition, such devices are suitable for long-term use by patients, and are less suitable for non-acute episodes than for emergency intravenous bolus use.

CN 111246898A also discloses similar devices, and timed administration of insulin and intravenous bolus injection are completely different fields, and need to track blood sugar level for adjustment, and cannot meet the needs of emergency treatment due to the long-term wearing characteristics.

Patent publication CN 110038190a discloses an automatic iv injection device that provides a feasible small electromechanical device that utilizes a stepper motor to ensure a constant bolus, while also disclosing a means of resistance speed regulation to set the injection speed and volume. The patent is designed without considering the problem of certain dangerous drugs, particularly the injection of mental control drugs, and the clinical intravenous bolus injection is often used for the dangerous drugs or the emergency requirements, so the application range is extremely limited.

The external device that the vein was injected has also been realized to the favourable electric motor among the prior art, but the external device of current prior art all with the help of electric motor control mode, and control is comparatively simple, all starts to inject with the on-off control mode, relies on medical personnel to decide speed and open and stop alone. For example, external automatic propulsion devices attached to conventional syringes have been disclosed in the prior art, which essentially utilize a stepper motor to effect propulsion. Since it is directly mounted on the rear of the syringe, the length, weight and center of gravity of the syringe after mounting are greatly changed, resulting in a significant change in the manner of operation. When medical staff face emergency, the common operation method of the medical staff is changed, and uncertain risks can be brought to mental control type medicine injection, so that the automatic injection device is not used for clinical records, particularly mental control type medicines. Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an automatic injection device, which at least comprises an operation analysis unit and an automatic injection component connected with the operation analysis unit, wherein,

the operation analysis unit analyzes a reasonable index of the injection scheme based on the personal characteristic information of the patient, the inquiry information, the medical operation information and/or the injection scheme drawn by the medical staff,

in the absence of a discrepancy between the injection protocol and the patient's personal characteristics information, interrogation information and/or medical procedure information,

the automatic bolus assembly is fixed relative to the injection device in a manner that is fixed and capable of automatically bolus the injection device,

the automatic bolus assembly determines an angle of injection by a healthcare worker in an injection manner that allows for one-handed operation, and performs automatic bolus injection upon activation by the healthcare worker.

When the automatic injection assembly is additionally arranged on the injection device, the length, the volume and the weight of the whole injection device can be changed, the injection mode of the automatic injection assembly needs additional training, and the learning cost is formed for medical workers on the contrary (the automatic injection assembly is also the reason that other similar devices in the prior art are difficult to popularize and use). However, by means of the invention, the medical staff can obviously reduce the operation risk when injecting the mental control medicine due to the simultaneous attention of the injection scheme and the inquiry information and/or the medical operation information. Moreover, when a dangerous condition occurs, the traditional injector can stop injecting the injection only by being pulled out immediately, and for other automatic injection equipment in the prior art, medical staff often hesitate to know how to stop the injection, but the injection mode allowing single-hand operation can stop injecting the injection immediately under the condition of not pulling out the needle, so that special risks under special conditions are effectively avoided. Particularly, the technical scheme of the invention can distinguish personal risks of medical staff from other systemic risks, is beneficial to the comprehensive popularization of automatic injection equipment, can be beneficial to the correlation analysis between intravenous injection medicines and disease conditions, and has important significance for the causal relationship analysis of medical treatment, medicines and patient diseases. The causal relationship analysis can be deep into the desensitized patient data (certain key information of the patient can be irrevocably incorporated into the injection scheme analysis), so the causal relationship and database is particularly beneficial to the medical informatization and intelligentization construction in the future.

Preferably, in the case that the injection protocol contradicts the personal characteristic information, the inquiry information and/or the medical operation information of the patient, the operation and analysis unit feeds back at least one injection protocol adjustment suggestion to the connected information interaction port. By means of the automatic bolus assembly, it is possible to objectively determine whether an injection protocol is problematic according to the patient's condition (physical condition), and to minimize the operational risk for the injecting person. For emergency situations, when one of the patient's condition and the injection scheme is wrong, medical disputes are often caused, and at the moment, the specific operating personnel can be used as the first responsible person to bear huge psychological pressure. Therefore, no automatic bolus device would be accepted by the healthcare worker until the present device was used, because existing automatic bolus devices are not able to give any support other than automatic bolus. After the risk occurs, because new equipment is introduced, an uncertain risk is brought to the operator. When the device of the invention is put into use, the liability can be determined more objectively, if unfortunate, by attributing both the injection protocol originating from the prescription and the patient's condition originating from the patient or his family members. Just because of its ability to objectively recover injection instructions and related data, the technical solution of the present invention has less resistance to clinical use.

Preferably, the operation analysis unit is connected with at least one injection scheme display terminal,

the operation analysis unit feeds back the injection speed and/or the injection duration of at least one injection scheme to the connected information interaction port based on the preset time of the medical operation information. Speed and duration are also extremely important aspects for responsibility division when objectively tracing data. According to the invention, the operation analysis unit records the time point and the injection duration of a single injection while displaying the speed and the duration, so that historical data can be formed for automatically demonstrating the use of the equipment, and beneficial data can be comprehensively and automatically accumulated in the future. The historical data referred to herein is the storage of injection rates and durations in relation to patient personal characteristic information, interrogation information and/or medical procedure information, and in particular also in relation to injection protocols. These data accumulation storage processes are done in a desensitized manner (i.e., in the case of hidden patient privacy data), and the accumulated data can be used back to support medical informatization construction, which forms the basis for causal relationship analysis between electronic prescriptions (i.e., the injection protocol referred to herein or derived from analysis thereof) and patient conditions.

Preferably, the operation analysis unit is provided with at least one programmable port, and the operation analysis unit performs reasonable index analysis on the personal characteristic information, the inquiry information, the medical operation information and/or the injection scheme drawn by the medical staff based on the operation analysis algorithm/operation analysis scheme input by the programmable port. The programmable interface is capable of data interaction with various injection protocol software and databases already disclosed in the prior art, and provides a data interface for incorporating the automatic bolus device of the present invention into a causal analysis system.

Preferably, the operation analysis unit transmits the execution time range of the injection protocol through at least one information interaction port based on the preset time of the medical operation information, and/or

And the operation analysis unit sends prompt information through at least one early warning module when the execution time range is close to. When the causal relationship is analyzed, the execution time range and the prompt information sent by the early warning module form a key time parameter, and particularly if the interruption condition occurs, the execution time range can still be accumulated according to the execution time formed by multiple times of starting to accurately analyze the working time of the automatic injection device so as to deduce the dosage. By means of the 'warning module sending out prompt information', the end time of the bolus injection can be accurately determined; in particular, the operation analysis unit can respond to the prompt message sent by the early warning module to execute data correlation operation, in particular to form data correlation operation between an electronic prescription (i.e. the injection scheme or the injection scheme obtained by analysis) and the condition of a patient, thereby supporting the future causal analysis process.

Preferably, the automatic pushing assembly at least comprises a control unit and a pushing sleeve, the control unit is in communication connection with the operation analysis unit, and the control unit performs automatic pushing based on the injection scheme sent by the operation analysis unit, wherein at least one movable assembly which moves is arranged between a pushing rod in the pushing sleeve and a pushing end of the injection device, the movable assembly is contacted with the pushing end in an approximately pressureless mode when not pushed by the pushing rod, and the movable assembly pushes the pushing end to perform pushing under the pushing action of the pushing rod according to the injection speed in the injection scheme. The automatic bolus according to the invention takes into account the problem of injection stop, for which reason the positioning of the movable element within the bolus sleeve constitutes the simplest technical solution, since the length of the movable element and the length of the bolus sleeve are both known, and in the case of a single-handed operation to achieve an emergency stop, the bolus amount can be accurately given purely by means of the stroke. Accurate support is given to determining the emergency plan when an emergency occurs. In addition, the movable component is contacted with the pushing end in an approximately pressure-free mode, so that the movable component is equivalently arranged in a floating mode, the floating arrangement of the movable component is beneficial to emergency stop, and convenience is provided for pressure measurement. Preferably, the operation analysis unit associates the travel measurement of the movable component with the execution time range and/or the warning information sent by the warning module, and uses the data after association for future causal analysis.

Preferably, one end of the push rod contacting the movable assembly is provided with at least one sensing probe, the arithmetic and analysis unit determines the start time of injection based on pressure data and/or pressure application time between the push rod and the movable assembly detected by the sensing probe, and the arithmetic and analysis unit determines the end time of injection based on the movement stop time of the push rod; whereby the budget analysis unit determines the duration of the automatic bolus injection. Advantageously, the side of the float-mounted movable assembly facing away from the pusher arm is minimally affected by patient muscle jitter, providing more accurate pressure data. Preferably, the floating movable assembly itself forms a cylindrical pressure sensor, which is supplied with power and transmits signals by means of a slide in the bolus sleeve. Cylindrical pressure sensors of 2 to 4 cm diameter are common sensors in the art, with a resolution that can meet the range of bolus pressures. Such a cylindrical pressure sensor, together with a rear stepping motor, constitutes a component that is much heavier than an injector, requiring a medical worker to hold it with one hand during injection, and thus, in actual use, constitutes an automatic injection mechanism that extends wholly obliquely downward.

Preferably, in the process of automatic bolus injection, the operation analysis unit predicts a predicted end time of injection based on the start time of injection and the injection speed, and when the predicted end time is inconsistent with the medical operation information, the operation analysis unit sends an injection speed adjustment suggestion lower than a safety threshold to the terminal of the medical staff through at least one information interaction port, and when the terminal of the medical staff feeds back confirmation information of the injection speed adjustment suggestion, the operation analysis unit sends an updated injection scheme to the control unit. The time variable during the causal analysis is key information, the "start time of injection" can be determined based on pressure data provided from the sensing probe of the movable assembly or the movable assembly constituting the pressure sensing portion, the "start time of injection" is determined and recorded only when the pressure data reaches a value exceeding a first threshold value, and the "end time of injection" is determined and recorded only when the pressure data is lower than a second threshold value. Preferably, the arithmetic analysis unit compares the "predicted end time" with the "end time of injection" for iteratively updating the initial algorithm of the arithmetic analysis unit to optimize the analysis accuracy.

The first threshold value is the starting pressure capable of reflecting the starting movement of the push end, and the actual value is determined according to the specific component type and test at the time of factory shipment. The second threshold value is the pressure capable of reflecting the stop of the push end, and the actual value is determined according to the specific component type and test when the push end leaves the factory. At the moment when the pushing end stops moving, if the pushing rod is still in a pushing state, the second threshold value is larger than the first threshold value.

The invention also provides an automatic bolus injection method, which is characterized by at least comprising the following steps:

inputting at least one operation analysis algorithm/operation analysis scheme to the operation analysis unit through at least one programmable port;

inputting personal characteristic information, inquiry information, medical operation information and/or an injection scheme drawn by medical personnel of a patient into the operation and analysis unit through at least one information interaction port;

the operation analysis unit analyzes the reasonable index of the injection scheme based on the personal characteristic information, the inquiry information, the medical operation information and/or the injection scheme drawn by the medical staff,

Preferably, the method further comprises: and under the condition that the injection scheme is inconsistent with the personal characteristic information, the inquiry information and/or the medical operation information of the patient, the operation analysis unit feeds back at least one injection scheme adjustment suggestion to the connected information interaction port.

The beneficial technical effects of the invention at least comprise:

aiming at the difficulties of the automatic injection device in the prior art in practical operation, such as the defects that the dosage cannot be accurately calculated and the injection cannot be suspended in time when adverse reaction occurs, the invention provides the automatic injection device and the method which combine budget analysis and manual execution, so that medical staff can observe the state change of a patient in time in the automatic injection process, can complete an injection scheme within a preset time to avoid obstructing the execution of related medical operation, can also close the automatic injection in time when the patient has adverse reaction, and can also stop the injection in time when the medicine effect reaches a required state, thereby avoiding the input of redundant medicines.

Moreover, not only is the state of patient not good, for example under the condition that the injection site appears twitching, medical personnel also can in time take out injection device from pushing the injection sleeve in order to carry out manual injection to avoid the skew of injection needle or reduce injection speed.

Moreover, in the medical information and intelligent wave, the causal analysis is an important subject, and the intravenous bolus constitutes an excellent data object for the causal analysis because of the urgency and the commonness; the invention can effectively form a large amount of desensitization data, establish the relevance between the drug and the patient condition and form a key database for the future causal analysis.

Drawings

FIG. 1 is a schematic diagram of the structure of the logic module of the present invention;

FIG. 2 is a schematic diagram of a handheld bolus device of the present invention.

List of reference numerals

1: the control unit 2: pushing the sleeve; 1O: an arithmetic analysis unit; 20: a storage unit; 30: a programmable port; 40: an information interaction port; 41: a personal information input port; 42: an inquiry information input port; 50: a scheme display terminal; 21: a communication line; 22: a micro motor; 23: a propulsion tank; 24: a movable component; 25: pushing the end; 26: a sleeve; 27: an injector; 28: a push rod; 29: a sensing probe.

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

The invention provides an automatic injection device and a using method thereof, aiming at the problems that the length, the volume and the weight of the automatic injection device in the prior art are huge, the dosage and the injection progress can not be adjusted based on the state change of a patient in the injection process, and the angle and the closing of the automatic injection can not be controlled by hands.

As shown in fig. 1 to 2, the present invention provides an automatic injection device, which at least includes an operation analysis unit 10, at least one information interaction port 40, an injection schedule display terminal 50, and a handheld automatic injection component. The at least one information interaction port 40, the injection scheme display terminal 50 and the handheld automatic injection assembly are respectively in communication connection with the operation analysis unit 1O in a wired or wireless mode.

The operation analysis unit 1O may be one or more of a server, an application specific integrated chip, a logic computation chip, and a processor. The operation analysis unit 1O is used for performing comprehensive calculation on the input inquiry information, personal characteristic information, privacy information, medical history information, medical status and/or injection drug scheme, and calculating to obtain a bolus injection scheme matched with the current disease condition of the patient. The bolus plan at least includes information of the patient's name, sex, age, bolus dosage, bolus speed, etc.

The injection regimen can be calculated, for example, according to the adult usage and amounts specified in the diazepam specification, for example: 10-30 mg of basal anesthesia or vein general anesthesia. Sedation, hypnosis or acute alcohol withdrawal, 10mg is started, and 5-10 mg is added every 3-4 h later as required. The total amount of the 24 hours is limited to 40-50 mg. Beginning to perform intravenous injection on the status epilepticus and serious frequent epilepsy, and increasing the dosage as required or even reaching the maximum dosage every 10-15 min. Tetanus may require a larger dose. Intravenous injection should be slow, 2-5 mg/min.

The information interaction port 40 is an exchange port that allows a medical professional or patient to enter patient information. The information exchange port 40 may be a data port that allows data connection to be established with a terminal, or may be a terminal device that is directly provided with an interactive operation such as information input and display.

Preferably, the information interaction port 40 and the terminal can be connected in a wired or wireless manner. For example, the connection mode of the information interaction port 40 is as follows: the terminal of the patient enters the information input interface in a two-dimensional code scanning mode to input the personal privacy information, medical history information and other contents in an identity unique mode.

Preferably, the information interaction port 40 includes a personal information input port 41 and an interrogation information input port 42. The personal information input port 41 is used for the patient to interactively input personal privacy information, medical history information, personal characteristic information, and the like. The inquiry information input port 42 is used for medical staff to input inquiry information, disease judgment information and other information for patients.

The injection protocol display terminal 50 is used to display the generated automatic bolus protocol. Preferably, the bolus injection protocol generated by the operation analysis unit 10 can be simultaneously displayed on the information interaction port 40 and the injection protocol display terminal 50. Preferably, the bolus injection protocol generated by the operation and analysis unit 10 can be simultaneously displayed on the personal information input port 41, the inquiry information input port 42 and the injection protocol display terminal 50. The advantage of such a display is that it is advantageous for the patient, the patient's family, the doctor and the nurse performing the bolus to see the bolus regimen of the patient in order to confirm and execute the bolus regimen of the patient.

Preferably, the arithmetic and analysis unit 1O is provided with a programmable port 30. The programmable port 30 is used for editing and modifying algorithms and analysis schemes executed by the operation analysis unit, so as to be more suitable for updating diagnosis and treatment schemes and cases of a plurality of departments, thereby enriching the accuracy of the operation analysis unit.

Preferably, the arithmetic and analysis unit 10 is in data connection with at least one memory unit 20 for storing the injection protocol, the inquiry information, the personal characteristics information, the privacy information, the medical history information, the condition status, etc. of the patient.

Preferably, the handheld automatic bolus assembly comprises at least a control unit 1 for controlling the bolus speed and the bolus dose and a bolus sleeve 2. The handheld in the invention means that: the medical staff holds the injector to inject the patient so as to determine the injection angle of the injector. The bolus sleeve 2 is sleeved outside the injector to perform bolus injection on a push rod of the injector according to the injection speed of the injection scheme. That is, the syringe can be detachably arranged in the push sleeve, and medical personnel can insert the needle and determine the injection angle for the patient by holding the push sleeve or holding the syringe.

Preferably, the information in the injection protocol includes at least patient name, injection site, name of the injected drug, injection speed, injection duration, and syringe specification information.

The control unit 1 may be a control component, such as a motor controller, capable of controlling the bolus motor. At least one cavity structure capable of clamping and fixing the injector is arranged in the injection sleeve 2.

Preferably, the bolus sleeve 2 has its respective components arranged as follows to allow for one-handed operation.

As shown in fig. 2, the bolus sleeve 2 comprises at least a sleeve 26, a micro-motor 22, an advancing assembly 28 and a movable assembly 24, such that the aforementioned "one-handed operable switch" is only allowed to be operated by the caregiver when the advancing lever 28 in the advancing channel 23 abuts the movable assembly 24 until the sensing probe 29 measures a pressure exceeding a predetermined threshold. In particular, the "one-hand operable switch" may be provided with LED indicators for selectively displaying at least three colors, such as red, green and yellow, for indicating injectability, cessation of injection, and the need for human intervention, respectively.

The cavity inside the sleeve 26 holds the body of the syringe in a removable fixed manner. The movable assembly 24 moves within the pusher slot 23 in a manner based on the movable contact of the pusher end 25 of the syringe. That is, the movable member 24 does not have a fixed position, and its position is flexibly moved depending on the contact position of the push end 23. The movable member 24 is in contact with the push end 23 in a non-pressure contact manner. The movable component moves on the propelling groove without resistance through the movable moving component 241, so that the movable component can be driven to move on the wall of the propelling groove in a small resistance or even a resistance-free mode.

At least one movable propulsion rod 28 connected to a motor is arranged in the propulsion tank 23. The pushing rod 28 is used for pushing the movable assembly to move according to a set speed, so that the movable assembly pushes the pushing end of the injector to move according to a preset speed, and the medicament in the injector is injected according to an injection scheme. Preferably, the motor is connected to the control unit 1 via a communication line.

Preferably, the cavity in the sleeve is sized to accommodate the size of a medical injector and can be provided in a variety of sizes. Preferably, the cavity in the sleeve is provided with a resilient layer in contact with the surface of the syringe to provide tighter contact between the cavity of the injection sleeve and the syringe and thereby prevent relative sliding between the sleeve and the syringe.

Preferably, the cavity within the injection sleeve is capable of receiving part or all of the volume of the syringe itself. Preferably, the cavity in the injection sleeve is capable of accommodating the full volume of the syringe, thereby further facilitating the securing of the syringe body against movement of the syringe.

Preferably, the end of the push rod that is in contact with the movable assembly 2 is provided with a sensing probe 29 for detecting the position of the movable assembly and determining whether contact is made with the movable assembly. Preferably, the sensing probe may be an infrared probe, a position sensor, a pressure sensor, or the like, as long as it senses that the push rod is in contact with the movable assembly.

The method of using the automatic bolus device of the present invention comprises at least:

medical care personnel input medical information which is considered to be input by the medical care personnel and is related to the disease symptoms of the patient, such as disease symptom information, state information, medical operation information, injection medicament dosage, injection time and the like of the patient through the inquiry information input port 42;

the patient and/or the patient guardian inputs personal characteristic information such as personal information, privacy disease information, allergy information and the like of the patient through the personal information input port;

the operation analysis unit calculates a reasonable index of the injection scheme input by the medical staff based on the medical information, the personal characteristic information, the medicament use characteristic and the judgment logic scheme;

in the case that the rational index of the injection protocol is lower than a safety threshold, the arithmetic analysis unit gives at least one suggested value relating to the injection protocol;

adjusting an injection protocol by a healthcare worker based on the suggested value;

the operation analysis unit recalculates reasonable indexes based on the medical information, the personal characteristic information, the medicament use characteristics and the adjusted injection scheme;

under the condition that the reasonable index of the injection scheme is larger than the safety threshold and the medical staff confirms, the operation analysis unit displays the determined injection scheme on the information interaction port 40 and the injection scheme display terminal 50 so that the patient, the patient guardian and the medical staff can clearly determine the injection scheme of the patient.

In the case where there is a safety risk in combination of the injection protocol input by the medical staff and the privacy information of the patient, the arithmetic analysis unit 1O prompts the medical staff to change the injection protocol on the terminal to which the inquiry information input port is connected in a manner that the privacy information is not displayed, and gives a change advice. For psychological reasons such as protection of personal privacy and ethics, patients may forget or unwilling to faithfully inform doctors of partial private information such as medication information related to aids, venereal diseases, disease history, etc., which hides certain risks from the doctor's injection protocol determination.

In the event that the patient is able to enter private information through the personal information port and is determined to be personally knowable, it is easier for the patient to enter private information to ensure safe use of the personal medicament. Therefore, the medical staff is reminded to modify the injection scheme by matching the invisible personal characteristic information of the medical care with the injection scheme based on the psychological characteristics of the patient, so that the patient wishes to input the privacy information by the operation and analysis unit, and the safety degree of the injection scheme is improved.

Preferably, the operation and analysis unit 1O displays a recommendation for adjusting the injection parameters of the injection protocol to the medical staff through the information interaction port 40 based on the logical contradiction between the medical operation information of the patient and the injection protocol. For example, the patient needs a preliminary PET examination! Before the examination, 10mg intravenous injection of diazepam is needed, and the time is more than 5 minutes! After the patient took the PET developer, the medical staff entered the time at which the PET developer was taken and the scheduled time for the PET examination, and entered the injection protocol. The arithmetic analysis unit 1O judges whether the injection protocol is reasonable or not based on the current time, the personal characteristic information of the patient, the medical operation information (PET examination), the inquiry information, and if not, gives a recommendation for adjustment of the injection parameters of the injection protocol. Therefore, the medical staff adjusts the injection scheme according to the adjustment suggestion, so that the injection scheme and the medical operation information can be performed in an unobscured sequence, the patient can be ensured to obtain reasonable medicament injection and perform smooth medical operation, and the excessive injection of the medicament can be avoided.

Preferably, the bolus sleeve 2 is further provided with a switch allowing for one-handed operation. The switch is connected with the control unit or the micro motor.

When the healthcare worker begins to perform an injection protocol on the patient, the healthcare worker draws the injected medication with the syringe and adjusts to a pre-injection state. Medical personnel will be in syringe and the matching injection sleeve of specification of preinjection state and be connected for the syringe imbeds in the injection sleeve with stable fixed mode. As shown in fig. 2, the pushing end of the syringe is in a movable state. When medical personnel singlehanded injection sleeve pricks the needle to the injection position, movable assembly based on the action of gravity with push away the end and contact with pushing away the end with the mode that can not make the end that pushes away remove. After one hand of the medical staff adjusts the injection angle and stably holds the injection sleeve, the other hand of the medical staff starts a motor switch on the injection sleeve. After receiving a signal for starting the motor, the control unit controls the motor to rotate according to the preset injection speed, so that the push rod connected with the micro motor is controlled to move according to the preset injection speed. When the push rod 29 is in contact with the push end, a strong contact signal of the sensing probe 29 is sent to the control unit so that the control unit calculates the start time of the injection. When the injection is completed and the push rod cannot move, the control unit calculates the end time of the injection. That is, after the injection is completed, the medical staff can close the switch with one hand to turn off the micro motor, and the turn-off time is the end time of the injection.

Medical personnel singlehanded injection sleeve's advantage lies in, and medical personnel can pay close attention to patient's state change at the in-process of injection, and dangerous change appears in patient's state, perhaps when reaching the medicament effect of needs, can use another hand in time to close the switch, stops the injection scheme. The advantage that so set up lies in, when the patient appears dangerous changes such as adverse reaction to the medicament, medical personnel can in time stop the injection scheme and avoid patient's medical risk.

This also has the advantage that for a preset dose of drug, it may not be necessary to inject all of the drug to achieve the desired sedated state, thereby avoiding the side effects of excessive injection. For example, a 73 year old patient who entered neurology with a cerebral infarction had a coronary heart disease and a pulmonary infection at the time of admission. The patient who is admitted to the hospital on the next day has rapid heart rate and rapid respiration and cough with pink foam sputum and has acute left heart failure with respiratory failure, and the intubation of the trachea is completed! Patient's tooth close dysphoria! The injection regimen consisted of administering a force of 5mg bolus and a bolus of 2.5mg with the patient quiet! Successful intubation! At the moment, the medical staff can close the switch in time to pull out the injection sleeve and the syringe needle, so that the injection of excessive force can be avoided. At this time, the control unit sends the actual injection time and the injection speed of the injection protocol to the arithmetic and analysis unit. The arrangement is beneficial to the dynamic update of the logical operation relation of the operation analysis unit, so that the reasonable judgment of the injection scheme is more accurate.

In the prior art, the injection speed of the automatic injection device is constant, which is more favorable for controlling the overall injection completion time. However, the pain sensation from the hydraulic pressure that the patient can withstand is not the same. Some patients can bear more pain and some patients can bear less pain. Particularly for unconscious and mentally unstable adult patients, the obvious painful stimulus easily causes the patients to struggle, and the medical staff has difficulty in controlling the behavior of the adult patients, resulting in the dangerous occurrence of injection or the situation of needle withdrawal. It is therefore necessary to adjust the injection speed as time permits, depending on the injection situation. However, a real difficulty is that the healthcare worker is not certain of the time for completion of the injection after adjusting the injection speed. Particularly where the completion time of the injection of the medicament is associated with subsequent medical procedures, it is more difficult for the healthcare worker to determine whether adjusting the injection speed will affect the subsequent medical procedures, such as the failure of the PET projection agent.

Based on the defects in the prior art, the operation analysis unit synchronously displays the speed adjusting range of the adjustable injection speed when displaying the injection speed in the injection scheme and the expected condition of the required injection time. The healthcare worker adjusts the injection procedure based on the range of speed adjustments in the injection protocol and the actual injection conditions during the administration of the injection.

For example, in the case of unstable mood of the patient and obvious pain performance, the injection schedule display terminal 50 displays that the injection speed can be further "+ a, -B", that is, the current speed can be increased by a or decreased by B at the maximum, and the medical staff can adjust the injection speed through the information interaction terminal. Preferably, the bolus sleeve is provided with a control button for increasing or decreasing the speed. The control buttons may be mechanical buttons or touch adjustment buttons. The healthcare worker can reduce the irritation of pain to the patient by adjusting the injection speed, or shorten the injection time for patients with insignificant pain by adjusting the injection speed. After the doctor and patient adjusts the injection speed, the operation and analysis unit predicts the current injection speed and the injection completion time again. Under the condition that the predicted injection completion time and subsequent medical operation information influence, an LED indicating lamp arranged on the injection sleeve sends out prompt light information to remind medical personnel that the current injection speed has problems, and the injection speed is unreasonable. Namely, the operation analysis unit of the invention displays the adjustable injection speed range to the medical staff based on the current injection scheme and/or prompts the unreasonable injection speed, thereby enabling the medical staff to adjust the injection scheme more reasonably, avoiding the injection risk and avoiding the influence on the subsequent medical operation.

Preferably, when the pressure value detected by the sensing probe 29 is abnormally changed, the operation analysis unit determines that the injection is abnormal, prompts the medical staff to intervene manually by changing the color of the LED indicator light, and checks whether the needle end is displaced or out of the needle. For example, if the pressure at the pushing end detected by the sensing probe 29 suddenly decreases, it may be that the injection needle is out of the needle, resulting in the sudden decrease of the injection pressure.

In the prior art, medical personnel can feel the abnormal stiffness of muscles based on the phenomenon that the pressure of the bolus injection is large through pure manual bolus injection, and can divert attention in a chatting mode so that a patient relaxes to facilitate injection. The automatic injector injects the patient at a preset injection speed regardless of whether the muscle area of the injection position of the patient is tense, which causes the patient to have a sharp increase in pain and lacks humanization. The use of automatic bolus devices tends to make medical personnel more concerned about the injection schedule and reduce psychological distraction to the patient. Therefore, how to reduce pain during automatic bolus injection and take care of the tense emotion of the patient is a problem which cannot be solved at present.

In the invention, the operation analysis unit compares the pressure value change of the sensing probe in the appointed time of the start of injection with the pressure sample to evaluate whether the injection muscle has over-stiffness. The pressure samples are input into the analysis operation unit and the storage unit in advance, and refer to the pressure value range of the ordinary people in the relaxed state and the designated injection part. Preferably, the specified time may be 1 minute or 30 seconds. For example, the operation analysis unit analyzes whether the patient may have muscle stiffness to affect the injection of the medicament by changing the pressure value of the pushing end within 30 seconds. At 30 seconds, if the pressure value of the pushing end of the injection device of the patient is obviously different from the pressure sample, the operation analysis unit sends an instruction to the control unit to adjust the color of the LED indicator lamp, so that the medical care personnel is prompted to carry out psychological persuasion or care on the patient, and the patient can relax muscles. In particular, the emotional instability and pain intolerance described above can be generally expressed as a change in pressure value, so that a simple judgment of the pressure value enables a caregiver to easily and easily cope with stress and pain intolerance when using the automatic bolus device of the present invention. Pressure sample data may be collected by an initialization learning process, such as manually pushing the push rod 28 within the push channel 23 by an experienced caregiver repeatedly and manually for a plurality of times during the initialization stage, and the collected pressure sample data may be used as an initial pressure sample of the automatic pushing device of the present invention to guide a subsequent automatic pushing operation, which is particularly helpful for a nurse to train a nurse.

Preferably, the initial pressure sample is provided for adjusting the initial rotation speed of the micro-motor 22 (e.g., a stepping motor), and the subsequent rotation speed is adjusted according to the pressure value variation curve of the sensing probe, thereby implementing a "time-sharing" adaptive injection scheme under stress. Preferably, the initial pressure sample is modified by correlating a plausible index of the injection protocol analytically determined based on the patient's personal characteristics information, the interrogation information, the medical procedure information and/or the injection protocol drawn up by the healthcare worker with the initial pressure sample, thereby resulting in a modification of the initial pressure sample. During the injection, by feeding back the injection speed and/or the injection duration of at least one injection protocol to the connected information interaction port based on the preset time of the medical operation information, the injection speed and/or the injection duration can be used to adjust the subsequent rotation speed to perform a "time-sharing" adaptive injection protocol, thereby coping with stress and pain intolerance.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. An automatic injection device, characterized in that the device at least comprises an operation analysis unit and an automatic injection component connected with the operation analysis unit, wherein,

2. The automatic bolus device of claim 1,

and under the condition that the injection scheme is inconsistent with the personal characteristic information, the inquiry information and/or the medical operation information of the patient, the operation analysis unit feeds back at least one injection scheme adjustment suggestion to the connected information interaction port.

3. The automatic bolus device of claim 2, wherein the computational analysis unit is connected to at least one injection protocol display terminal,

the operation analysis unit feeds back the injection speed and/or the injection duration of at least one injection scheme to the connected information interaction port based on the preset time of the medical operation information.

4. The automatic bolus device of claim 3, wherein the arithmetic analysis unit is provided with at least one programmable port,

the operation analysis unit analyzes the personal characteristic information, the inquiry information, the medical operation information and/or the injection scheme drawn by the medical staff reasonably based on the operation analysis algorithm/operation analysis scheme input by the programmable port.

5. The automatic bolus device of claim 3, wherein the operational analysis unit sends the injection protocol through the at least one information interaction port over a time period of execution based on a preset time of the medical procedure information, and/or

And the operation analysis unit sends prompt information through at least one early warning module when the execution time range is close to.

6. The automatic bolus device of any one of claims 1 to 5, wherein the automatic bolus assembly comprises at least a control unit and a bolus sleeve,

the control unit is in communication connection with the operation analysis unit, and performs automatic injection based on the injection scheme sent by the operation analysis unit, wherein,

at least one movable component which moves is arranged between the push rod in the push injection sleeve and the push end of the injection device,

the movable component is contacted with the pushing end in an approximately pressureless mode, and the movable component pushes the pushing end to perform pushing injection according to the injection speed in the injection scheme under the pushing action of the pushing rod.

7. The automatic bolus device of claim 6, wherein an end of the push rod in contact with the movable assembly is provided with at least one sensing probe,

the arithmetic analysis unit determines the start time of injection based on pressure data and/or pressure application time between the push rod and the movable assembly detected by the sensing probe,

the arithmetic analysis unit determines an end time of injection based on a movement stop time of the push lever;

whereby the budget analysis unit determines the duration of the automatic bolus injection.

8. The automatic bolus device of claim 7, wherein during automatic bolus injection,

the arithmetic analysis unit predicts a predicted end time of injection based on the start time of injection and the injection speed,

under the condition that the predicted end time is inconsistent with the medical operation information, the operation analysis unit sends an injection speed adjustment suggestion lower than a safety threshold value to a terminal of a medical worker through at least one information interaction port,

and under the condition that the terminal of the medical staff feeds back the confirmation information of the injection speed adjustment suggestion, the operation analysis unit sends an updated injection scheme to the control unit.

9. An automatic bolus method, the method comprising at least:

10. The automated bolus method of claim 9, further comprising: