CN101862489B - Medicament injector - Google Patents
Medicament injector Download PDFInfo
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- CN101862489B CN101862489B CN2010102007261A CN201010200726A CN101862489B CN 101862489 B CN101862489 B CN 101862489B CN 2010102007261 A CN2010102007261 A CN 2010102007261A CN 201010200726 A CN201010200726 A CN 201010200726A CN 101862489 B CN101862489 B CN 101862489B
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Abstract
The invention discloses a medicament injector and a control method thereof. The medicament injector comprises a motor drive part, an injection pushing part, an injection part, a control part, a power supply part and an injector shell, wherein the motor drive part comprises a stepping motor assembly and an induction structure; the induction structure monitors the running state of a stepping motor by a photoelectric inductor; the motor drive part drives the injection part to finish injection work by the injection pushing part; the control part realizes intelligent control; and the power supply supplies power. The medicament injector has the stably run mechanical structure parts, reduces hidden danger in medicament taking particularly as the photoelectric inductor is arranged to feed the running information of the stepping motor back by photoelectric induction and alert and prompt a patient of the working state of the injector, and is much improved on the control part so as to achieve intelligentization, convenient and fast operation and injection security.
Description
Technical field
The invention belongs to field of medical article technology, be used for drug injection, be specially a kind of medicament injector.
Background technology
At present, diabetes have become the fourth-largest killer after cardiovascular diseases, cerebrovascular, cancer.To the efficacious therapy method of diabetics is exactly the long term injections insulin, and suffers from the higher often age bracket of crowd of diabetes.Mostly common in the market insulin syringe is ordinary syringe: be divided into disposable and re-usability; The utensil of the insulin injection of the re-usability that circulates on the market, a kind of is the injection pen of pure machinery, another kind is expensive syringe pump.Novopen such as promise and pen, excellent companion's pen etc., have following shortcoming: dosage is provided with trouble; All need adjust scale before each the use: the helicitic texture of rotation novopen afterbody, aim at required graduation mark and be used for being provided with each injection of insulin dosage, because of the patient is old group mostly; Dysphotia, and a lot of diabetics is all with visually impaired complication makes dosage setting before the per injection; Mainly be with fine and closely woven graduation mark alignment, become a very big difficulty.In case and the dosage setting is not to causing serious consequence.In addition, a lot of old peoples are forgetful easily, cause the risk of multiple injection easily.
In view of analysis to two kinds of products, understand patient's heartfelt wishes, hoping has a kind of price can bear and injection product easy to use.Some elderly patients are arranged, economical poor, dim-sighted from old age, do not see the injection pen scale, the dose difficulty is advanced in adjustment, and the maloperation probability is big, and potential risk property is high, and repeatedly the maloperation meeting aggravates one's illness.
Therefore how according to doctor's advice on time, accurately adjust dosage, safe and punctual to own effective site at health puncture and push away medicine be related to the patient can science, correctly treat, finally reach and improve the quality of living, keep vitality and the healthy big problem of health.
Summary of the invention
The problem that the present invention will solve is: existing drug injection articles for use, and particularly the big multioperation of injection of insulin product is accurate inadequately, and the patient injects voluntarily and has operational risk; Be inappropriate for old group and use, and manufacturing cost is high, need provide performance good; Be easy to accurate operation, the new product that cost is low.
Technical scheme of the present invention is: a kind of medicament injector is characterized in that comprising the motor-driven part, injection propulsive units, injection portion, control section and power pack, and injector housing.
Control section is the microcontroller circuit plate;
The motor driving part branch comprises: motor assembly and induction structure, and the motor assembly comprises stator coil, magnet steel rotor and motor shaft, control section sends pulse signal to stator coil; The rotation of driven magnetic steel rotor, motor shaft and magnet steel rotor rotate synchronously, and induction structure comprises inductive disks and photoelectric sensor; Inductive disks is the gear-like structure, and the inductive disks center is fixedly connected with motor shaft, and rotates synchronously with motor shaft; Photoelectric sensor is arranged on the inductive disks edge; Its induction light path is used to monitor the rotation of inductive disks corresponding to the position of the tooth of gear-like structure, and photoelectric sensor is electrically connected with control section;
The injection propulsive units comprises: screw rod with eject pipe, screw rod is arranged on and ejects in the pipe, screw rod with eject pipe through sliding being threaded of joining, the rotation of screw rod is converted into the rectilinear motion that ejects pipe;
Injection portion comprises: injection assembly and entry needle; The injection assembly comprises piston, cartridge and entry needle fixed cover; Piston is arranged in the cartridge, and with eject the pipe be connected, entry needle fixed cover and cartridge are connected as a single entity; Entry needle is fixed on the cartridge through the entry needle fixed cover, and is communicated with cartridge;
The motor shaft of motor-driven part is connected with screw rod through shaft coupling; Screw rod and motor shaft rotate synchronously; Screw rod with the synchronous rotation of motor shaft be converted into eject pipe along motor shaft to rectilinear motion; Piston moves with ejecting moving in cartridge of pipe, and the length that ejects pipe is not less than the shift motion length of piston in cartridge.
As optimal way, the injection propulsive units is provided with to eject and guarantees sheath, ejects pipe and guarantees in the sheath and slide ejecting, and ejects to be provided with between pipe and the piston to eject dish, connects and ejects pipe and piston through ejecting dish.
Preferably, eject and guarantee that the sheath inboard is provided with T type groove, eject the pipe outside and be provided with and the corresponding projection of T type groove, said projection slides in T type groove.
Further, motor-driven part, injection propulsive units, injection portion; Control section and power pack all are arranged in the injector housing, and injector housing is a pen type, the motor-driven part; Injection propulsive units and injection portion are arranged on the same axis, and motor-driven partly is positioned at the pen end of pen-type injector housing, and injection portion is positioned at the nib end; The entry needle of injection portion stretches out injector housing, and correspondence is provided with cap, airtight entry needle.
The injection portion structure is specially: the end that cartridge connects entry needle stretches out injector housing, and the part of stretching out is provided with the cartridge sheath outward, and cap cooperates airtight entry needle with the cartridge sheath, and corresponding entry needle is provided with the entry needle sheath in the cap.
Medicament injector is provided with display screen, button, buzzer and USB interface, and display screen, button, buzzer and USB interface are connected control section respectively.
The control method of above-mentioned medicament injector comprises:
1), the microprocessor of control section sends pulse signal; Come drive stepping motor to rotate corresponding angle and stepping angle through stepper motor driver by the direction of setting; The corresponding rotation of the screw rod that is connected with motor ejects pipe under the threaded function that inwall and screw rod match, with screw rod displacement to axial; Promoting piston moves in cartridge; And then the medicinal liquid in the promotion cartridge, the angular displacement that motor rotates is converted into the straight-line displacement of piston thus, by the ID of this linear relationship control insulin;
2), the inductive disks that is provided with on the motor and the rotation of photoelectric sensor monitoring motor, inductive disks is the gear-like structure, photoelectric sensor is arranged on the inductive disks edge; Its induction light path is corresponding to the position of the tooth of gear-like structure; Because inductive disks is rotated with motor synchronous, when motor rotates, the induction light path of the intermittent partition photoelectric sensor of the gear teeth of inductive disks; Produce therefrom and pulse signal that the motor rotation situation is closely related; Control section is judged the rotary state of motor according to the monitor signal of photoelectric sensor, according to the monitoring result of the electric machine operation state and the photoelectric sensor of current setting, judges whether operate as normal of motor; When motor rotates because of abnormal conditions stall, stall or friction speed, report to the police;
3), control section connects man-machine interface; Comprise display screen, button, buzzer and USB interface, display screen is used for syringe state and injection data show, and button is used to set the work of syringe; Buzzer is used for reminding, and USB interface is used for being connected with computer equipment and charging.
The microprocessor of control section is provided with the Flash memorizer, control below realizing through software mode:
1), injection pattern is set quick pattern or timesharing pattern:
Under the quick pattern; When having set ID, parameter is deposited in the Flash memorizer, if do not reset new ID before the per injection afterwards at every turn; Just directly from the Flash memorizer, read out last ID parameter of preserving, as the ID of current injection;
Under the timesharing pattern, difference is provided with different injection values constantly, and setting-up time is reminded;
2), the storage injection information, adopt fifo mode to realize the storage of information, preserve nearest 20 times historical injection information in the memory block, comprise the injection zero hour, ID and injection pattern;
3), historical injection data browses; Select canned data in the Flash memorizer is directly shown on display screen one by one through button; Or canned data is transferred on the host computer through USB interface, browse and consult in the software on host computer;
4) the double injection interval is too short then forbids injecting, and sets interval threshold inject time, and according to the last injection information of storage, then forbid this injection less than threshold value this inject time at interval;
5) setting power saving mode, if not operation of the time that process is set, syringe gets into low power consumpting state, comes save power with this, the control section that is under the low power consumpting state is jumped out low power consumpting state when running into the button interruption, get back to normal mode of operation.
Medicament injector is provided with following operation alerting pattern:
1), when a shot finishes, control section is based on the monitor signal of photoelectric sensor, this injection of control buzzer prompting user finishes, and shows the setting dosage of this injection simultaneously at display screen, and shows the injection ending message;
2), control section is according to the injection information of storage, calculates the residue dosage of cartridge, when the residue dosage in the cartridge during less than the ID of this setting, buzzer gives the alarm to remind user to change cartridge; After cartridge dosage had all been injected, control section control motor was got back to initial position automatically, prepared to use the medicinal liquid of new cartridge to inject;
3) monitor the voltage of battery, in real time, information of voltage is transferred to control section through the A/D conversion, when less than preset threshold, just reports to the police, and the prompting user charges or changes battery, forbids injection when battery dump energy is lower than setting threshold;
4), set injection and remind constantly, comprise prompting of buzzer sound and screen display.
The present invention sends the pulse signal drive stepping motor by control section; Again through screw rod, eject pipe and promote piston and in medicine bottle, move; The angular displacement that motor rotates is converted into the straight-line displacement of piston thus, accurately controls the ID of insulin by this linear relationship, and transmission link is few; Degree of accuracy is high, error≤0.1U.
Existing insulin syringe all is after the patient configures injection volume; Syringe is injected; Whether operate as normal does not have clear and definite prompting to syringe during this time, because whether the particularity of injection behavior has correctly been accomplished injection and be difficult for discovering; Opaque words of ampoule particularly, the patient only is difficult to judge whether success of injection with self sensation.Do not have the sensory feedback device like syringe, gently then increase the state of an illness, what reason patient does not also know, and is heavy then be in peril of one's life.The present invention is provided with photoelectric induction device especially in syringe, utilize optoelectronic induction feedback motor operation information.The detected signal of photoelectric sensor is corresponding with the pulse signal that control section sends to motor, and then motor rotation is normal; If the detected signal of photoelectric sensor does not match with the pulse signal that sends to motor, then motor rotation is unusual; Do not detect signal, then represent the motor stall; As showing machine operation in abnormality according to being provided with of control section, then send caution and remind the patient, syringe does not have operate as normal, and the medication that is equal to nothing reduces medication hidden danger with this.
Screw rod of the present invention links to each other through shaft coupling with motor, reduces unnecessary transmission link, screw rod with eject pipe and pass through threaded engagement; The adjustment angle of thread can adjusting screw(rod) be converted into the motor shaft circular motion speed of the axial linear movement that ejects pipe; Ejecting the gas thread material and adopt high-abrasive materials such as politef or polyformaldehyde, in motor process, almost is zero wearing and tearing; So it is long to use the life-span, the probability that occurs gritting one's teeth is very small.The present invention simultaneously ejects pipe and has specially added to eject and manage and protect cover, and has designed T type groove, guarantees on sheath and the same axis of motor shaft, steadily to move ejecting pipe, and prevents that the screw rod rotation from driving and eject pipe and rotate the completion action of injection simultaneously.
The present invention also has many improvement on controller, realize intelligent.The present invention can remember patient's injection information through the effect of USB interface and inner Flash, makes things convenient for the user to inquire about, use, and also makes things convenient for the doctor to follow the tracks of, analyze simultaneously.On the Based Intelligent Control of software, also greatly consider convenience and the safety that the patient uses.The function of the quick direct substitution original pure mechanical syringes of pattern is remembered last injection value simultaneously, and is simple, be easy to patient's operation; The timesharing pattern embodies the characteristics of intelligent control greatly, and refusal is wrong to be provided with, in case the parameter of setting; The intelligent decision injecting condition; Through man-machine interaction modes such as display screen prompting, auditory tone cueses, avoided the generation of the non-expection injection event that the patient causes because of hypomnesis, dysphotia, make better operating syringe of patient; The storage injection information is convenient to patient's inquiry, is used, and various prompting has greatly guaranteed injection safety.
Description of drawings
Fig. 1 is the structural representation of syringe of the present invention.
Fig. 2 divides local structure for amplifying sketch map for the motor driving part of syringe of the present invention.
Fig. 3 is the local structure for amplifying sketch map of the injection propulsive units of syringe of the present invention.
Fig. 4 is the local structure for amplifying sketch map of the injection portion of syringe of the present invention.
Fig. 5 is the connection layout of injector motor drive part of the present invention with the injection propulsive units.
Fig. 6 injects the sectional view of propulsive units for the present invention.
Fig. 7 is the block diagram of power pack of the present invention and control section.
Fig. 8 is the operational flowchart of syringe of the present invention.
The specific embodiment
The invention provides a kind of easy to usely, operate accurate medicament injector, specify the structure and its control method of medicament injector of the present invention below.
Like Fig. 1, insulin syringe comprises the motor-driven part, the injection propulsive units, and injection portion, control section and power pack 13, Fig. 2-4 are that big sketch map is worked as in the part of each several part, wherein
Control section is a microprocessor;
The motor driving part branch comprises: motor 22, and control section sends pulse signal, through the magnet steel rotor rotation of chip decoding drive stepping motor 22; Motor shaft 21 rotates with the magnet steel rotor synchronously, a fixing inductive disks 23 on the motor shaft 21, and inductive disks 23 centers are provided with a cydariform hole; Install with the cydariform part close-fitting of motor shaft 21 rear ends, inductive disks 23 and motor shaft 21 are rotated synchronously, the cross section of inductive disks 23 is a gear shape; Photoelectric sensor 24 is arranged on inductive disks 23 edges, and its induction light path is corresponding to the position of the tooth of gear-like structure, because inductive disks 23 is rotated with motor synchronously; When motor rotates; The induction light path of the intermittent partition photoelectric sensor 24 of the gear of inductive disks 23, the rotation of monitoring inductive disks 23, photoelectric sensor 24 is electrically connected with control section;
The injection propulsive units comprises: screw rod 15 manages 16 with ejecting; Screw rod 15 outer with eject pipe 16 inwalls and be provided with the screw thread that mutual cunning is joined; Ejecting pipe 16 moves to axial through said screw thread with screw rod 15; The rotation of screw rod is converted into the rectilinear motion that ejects pipe, adjusts the said angle of thread and can regulate the straight-line speed that ejects the relative screw rod of pipe;
Injection portion comprises: injection assembly 5; Entry needle 3, injection assembly 5 comprise piston 7, cartridge and entry needle fixed cover 4, and piston 7 is arranged in the cartridge; And with eject pipe and 16 be connected; Entry needle fixed cover 4 is connected as a single entity with cartridge, and entry needle 3 is fixed on the cartridge through entry needle fixed cover 4, and is communicated with cartridge; Injecting liquid drug assembly 5 can be selected existing commercially available prod, and entry needle 3 is disposable.
Like Fig. 5; The motor shaft 21 of motor-driven part connects 20 through connecting shaft and is connected with screw rod 15; Screw rod 15 rotate with motor shaft 21 synchronously, screw rod 15 with the synchronous rotation of motor shaft 21 be converted into eject manage 16 along motor shaft to rectilinear motion, piston 7 is positioned at the cartridge of injection assembly 5; Move with ejecting moving in cartridge of pipe 16, the length that ejects pipe 16 is not less than the shift motion length of piston 7 in cartridge.Wherein, shaft coupling 20 is a kind of joints that are flexible coupling that connect motor shaft 21 and screw rod 15, and its interior cross section is the cydariform hole, cooperates with the outer cross section drum shape of screw rod 15, motor shaft 21 front ends.
The injection propulsive units is provided with to eject and guarantees sheath 17, ejects pipe 16 and guarantees sheath 17 in and slide ejecting, and ejects to be provided with between pipe 16 and the piston 7 to eject dish 10, moves with steady promotion piston 7 in ejecting the moving of pipe 16.
Like Fig. 6, eject and guarantee that sheath 17 inboards are provided with T type groove, eject pipe 16 outsides and be provided with and the corresponding projection of T type groove, said projection slides in T type groove.Eject and guarantee that sheath 17 combines T type groove and projection to make the motion that ejects pipe 16 more stable, guarantees the accurate work of syringe.
As a kind of concrete preferred implementation of the present invention, motor-driven part, injection propulsive units, injection portion, control section and power pack all are arranged in the injector housing, and injector housing is a pen type; The motor-driven part, injection propulsive units and injection portion are arranged on the same axis, and motor-driven partly is positioned at the pen end of pen-type injector housing; Injection portion is positioned at the nib end; The entry needle of injection portion stretches out injector housing, and correspondence is provided with cap 1, airtight entry needle; Control section is arranged on pen end, and power pack 13 is arranged in the space between injection propulsive units and the injector housing, and reasonably layout makes syringe of the present invention have small and exquisite volume, is easy to carry.
The injection portion structure is specially: the end that medicine bottle connects entry needle 3 stretches out injector housing, and the part of stretching out is provided with cartridge sheath 6 outward, and cap 1 cooperates airtight entry needle with cartridge sheath 6, and corresponding entry needle is provided with entry needle sheath 2 in the cap 1.Such design makes syringe of the present invention can adapt to the injection assembly 5 of different length; When the injection portion that needs different size; Mainly be under the medicine bottle volume condition of different of injection assembly 5, injector housing, motor-driven part, injection propulsive units; Control section and power pack 13 can be produced in batches, as long as the cartridge sheath of the corresponding configuration of the cartridge of corresponding injection assembly 5 different size.
Medicament injector is provided with display screen 18, button 9, buzzer and USB interface 25; Display screen 18, button 9, buzzer and USB interface 25 are connected control section respectively; Equally, for making whole syringe internal structure rationally distributed, display screen 18 utilizes the space of injecting propulsive units and injector housing with button 9; Be arranged on the opposite side relative with power pack, USB interface 25 is arranged on by the control section.
LCD status screen displaying contents:
(1) the real-time electric weight of battery;
(2) insulin cartridge residue dosage;
(3) current ID dynamically shows;
(4) present mode state;
(5) frequency injection;
(6) date and time.
The LCD that selects for use is of a size of 128 * 32, and as the state display field, the latter half is as menu bar with its first half.Through monitoring battery capacity and insulin cartridge residue dosage, can shield up at LCD and show these information in real time.Through reading the inner real-time clock of single-chip microcomputer, can current date and time be presented on the LCD screen.Real time dynamic display injection on the LCD screen when injecting tells user to inject this moment.Will there be relevant informations such as inject time and dosage among the Flash in every completion shot, and can check these historical informations through " review " item in the menu.
The content that button 9 is set comprises: real-time clock, ID, frequency injection and each injection moment; Menu has time, dosage and three options of review; A second-level menu is wherein arranged under the dose options; The content of second-level menu is quick pattern and timesharing pattern, shows that with menu the button cooperates has four, is respectively " withdrawing from (ESC) ", " confirming (ACT) ", " on turn over (UP) ", " time turn over (DOWN) "; Cooperation and the prompting of the correspondence on the LCD screen through these four buttons; Can carry out the initialization system real-time clock, ID (the pairing dosage settings of timesharing pattern of quick pattern and maximum five moment point) can be browsed the relevant information of injection before through " review " option in the menu.
Syringe of the present invention is controlled through control section, and individual electronic control module block diagram is as shown in Figure 7, and the automatically controlled part that relates in the whole syringe is mainly by microprocessor MCU, key-press module, lattice type LCD display; Electric-motor drive unit, photoswitch monitoring means, buzzer warning unit; Usb interface unit, electric quantity monitoring unit, memory element; Real-time clock RTC unit, chargeable lithium cell and power module are formed.
Wherein microprocessor MCU is the core of system; It is made up of low-power consumption high-performance processor MSP430F5437; Be used for accomplishing the accurate setting of injection of insulin dosage, the storage and the demonstration of injection information, what drive stepping motor was accomplished syringe accurately pushes away medicine, abnormal conditions occur and reports to the police and handle; Key-press module and lattice type LCD have constituted the man-machine interaction part of whole system; Accomplish the setting of real-time clock by man-machine interaction unit; The setting of injection of insulin pattern and ID; Lattice type LCD adopts the operator scheme of menuization, the syringe relevant information shown, and various prompting and warning message etc.; Electric-motor drive unit mainly is made up of motor drive ic A3901, is used to provide enough drive currents, and drive stepping motor speed is as requested rotated; Real-time clock RTC is the MCU internal element, for whole system work provides a time reference; Memory element is the inner Flash of MCU, is used for preserving some parameter and injection information are set; Buzzer alarm circuit mainly is used for injecting the auditory tone cues of End Event and the audible alarm of abnormal conditions; The photoswitch monitoring means is mainly used in the feedback monitoring of motor rotary state, when abnormal conditions such as stall and stall occurring, in time notifies MCU to carry out abnormal conditions and handles; The voltage of lithium battery is gathered in real time by the A/D passage of MCU in the electric quantity monitoring unit, when voltage is lower than preset threshold, hangs down electric weight and reports to the police; Usb interface unit is used for carrying out between insulin syringe and the host computer transfer of data, and the historical injection information of preserving in the insulin syringe is transferred in the host computer, can also utilize USB interface to give lithium cell charging simultaneously; Chargeable lithium cell is that whole system provides energy, and the voltage of lithium battery output is 3.3V through power module TP63031 voltage stabilizing, for the various piece of system provides a stable running voltage.
The present invention can adopt the single-unit lithium battery power supply, converts the output voltage of lithium battery the DC voltage of 3.3V into through DC/DC module TPS63031, gives microprocessor, the power supply of unit such as LCD and stepper motor driver and motor.Utilize general USB interface; Adopt battery charging management chip BQ24072 to control and manage; Can charge to lithium battery, controller MSP430F5437 monitors the process of whole charging, dynamically shows the charged state and real-time electric weight of lithium battery on the lcd screen; After charging finished, lcd screen provided the text prompt that charging finishes.
Like Fig. 8, be the operational flowchart of syringe of the present invention, the control method of medicament injector comprises:
1), the microprocessor of control section sends pulse signal; The microprocessor that uses among the present invention is the MSP430F5437 of TI company, comes drive stepping motor to rotate corresponding angle and stepping angle, the corresponding rotation of the screw rod that is connected with motor by the direction of setting through stepper motor driver; Eject pipe under the threaded function that inwall and screw rod match; With screw rod displacement to axial, promote piston and in cartridge, move, and then promote the medicinal liquid in the cartridge; The angular displacement that motor rotates is converted into the straight-line displacement of piston thus, by the ID of this linear relationship control insulin;
The rotation of inductive disks that 2), is provided with on the motor and the corresponding photoelectric sensor monitoring motor that is provided with; Because inductive disks is rotated with motor synchronous; Control section is judged the rotary state of motor according to the monitor signal of photoelectric sensor, according to the monitoring result of the electric machine operation state and the photoelectric sensor of current setting, judges whether operate as normal of motor;, report to the police because when abnormal conditions stall or stall when motor; The cross section of inductive disks is a gear shape, and the position of the induction light path corresponding teeth of photoelectric sensor is during photoelectric sensor work; Have continuously optical signal send always and pass inductive disks flute profile place, uninterrupted induction is then represented inductive disks in rotation like signal, and just motor shaft does not turn round; Otherwise the photoelectric sensor signal has the feedback of being interrupted, and is logical when keeping off during then by inductive disks, and the expression inductive disks is in rotation; Just motor shaft and screw rod are in rotation, and the screw rod rotation drives knock-pin and in the knock-pin sheath, moves forward promoting drug fluid cylinder inner carrier; Piston extruding medicinal liquid gets into human body through entry needle, accomplishes the medication process.As in the injection process because fault, the motor stall, then the photoelectric sensor induction is less than the inductive disks rotation, photoelectric sensor does not have even interval signal and feeds back to system, system is then according to the program of setting, the alarm patient, action of injection is abnormal to be accomplished.As syringe carry out action of injection show as screw rod at the uniform velocity the rotation; In like manner motor shaft drives inductive disks and at the uniform velocity rotates at the uniform velocity rotation, and then photoelectric sensor is sensed uniform interval signal; Feed back to the chip of control system; Chip can judge that the injection running is normal according to the program of input, and prompting does not give the alarm.
3), control section connects man-machine interface; Comprise display screen, button, buzzer and USB interface, display screen is used for syringe state and injection data show, and button is used to set the work of syringe; Buzzer is used for reminding, and USB interface is used for being connected with computer equipment and charging.
The microprocessor of control section is provided with the Flash memorizer, and can intelligently judge and carry out following operation by injecting condition:
1), injection pattern is set quick pattern or timesharing pattern:
Under the quick pattern; When having set ID, parameter is deposited in the Flash memorizer, if do not reset new ID before the per injection afterwards at every turn; Just directly from the Flash memorizer, read out last ID parameter of preserving, as the ID of current injection;
Under the timesharing pattern, difference is provided with different injection values constantly, and sets the quarter-bell time alarm;
Quick pattern replaces the function of existing Purely mechanical insulin syringe fully, sets dosage and can inject, the convenient use; The different IDs that the timesharing pattern is set maximum five moment point in the odd-numbered day according to patient's different dietary habit satisfy under the different feed states of patient the demand to the insulin of various dose;
Under the particularly timesharing pattern, the effectiveness of intelligent decision setting value, the setting of mistake, too short like the double injection time, the time of quarter-bell is injected the section of useful effect constantly etc. head and shoulders above, and will be under an embargo can not be saved among the Flash yet.Accomplish effectively set after, select corresponding dosage during different constantly the injection automatically, effectively do not forbid injection during section constantly to injection, forbid the continuous injection that the identical time period is interior simultaneously;
2), the storage injection information, adopt fifo mode to realize the storage of information, preserve nearest 20 times historical injection information in the memory block, comprise injection zero hour, ID;
3), historical injection data browses; Select canned data in the Flash memorizer is directly shown on display screen one by one through button; Or canned data is transferred on the host computer through USB interface, browse and consult in the software on host computer;
4) consider drug effect and security problems; The double injection time interval, too short meeting produced adverse influence to health; Therefore the double injection time interval is too shortly then forbidden injection; Set interval threshold inject time, based on the last injection information of storage, then forbid this injection less than threshold value this inject time at interval;
5) setting power saving mode, if not operation of the time that process is set, syringe gets into low power consumpting state, comes save power with this, the control section that is under the low power consumpting state is jumped out low power consumpting state when running into the button interruption, get back to normal mode of operation.
Syringe is provided with following operation alerting pattern:
1), detect the motor rotation situation in the injection process, rotate in case stall, stall, friction speed occur, motor stops operating, and sends the buzzer alarm;
2), when a shot finishes, control section is based on the monitor signal of photoelectric sensor, this injection of control buzzer prompting user finishes, and shows the setting dosage of this injection simultaneously at display screen, and shows that injection finishes;
3), control section is according to the injection information of storage, calculates the residue dosage of cartridge, when the residue dosage in the cartridge during less than the ID of this setting, buzzer gives the alarm to remind user to change cartridge; After cartridge dosage had all been injected, control section control motor was got back to initial position automatically, prepared to use the medicinal liquid of new cartridge to inject;
4) monitor the voltage of battery, in real time, information of voltage is transferred to control section through the A/D conversion, when less than preset threshold, just reports to the police, and the prompting user charges or changes battery, forbids injection when battery dump energy is lower than setting threshold;
5), set injection and remind constantly, comprise prompting of buzzer sound and screen display.
When 6), setting dosage, time etc. do not meet established rule; Show miscue through display screen; And abandon preserving the parameter of Set For Current, said established rule can be the warning threshold that in syringe, is provided with in advance, or the user was provided with in dosage before, time;
7), injection constantly do not arrive, when perhaps attempting at the appointed time in the section injection continuously, injection will be under an embargo, and on display screen, show information warning.
Claims (7)
1. a medicament injector is characterized in that comprising the motor-driven part, injection propulsive units, injection portion, control section and power pack, and injector housing.
Control section is the microcontroller circuit plate;
The motor driving part branch comprises: motor assembly and induction structure, and the motor assembly comprises stator coil, magnet steel rotor and motor shaft, control section sends pulse signal to stator coil; The rotation of driven magnetic steel rotor, motor shaft and magnet steel rotor rotate synchronously, and induction structure comprises inductive disks and photoelectric sensor; Inductive disks is the gear-like structure, and the inductive disks center is fixedly connected with motor shaft, and rotates synchronously with motor shaft; Photoelectric sensor is arranged on the inductive disks edge; Its induction light path is used to monitor the rotation of inductive disks corresponding to the position of the tooth of gear-like structure, and photoelectric sensor is electrically connected with control section;
The injection propulsive units comprises: screw rod with eject pipe, screw rod is arranged on and ejects in the pipe, screw rod with eject pipe through sliding being threaded of joining, the rotation of screw rod is converted into the rectilinear motion that ejects pipe;
Injection portion comprises: injection assembly and entry needle; The injection assembly comprises piston, cartridge and entry needle fixed cover; Piston is arranged in the cartridge, and with eject the pipe be connected, entry needle fixed cover and cartridge are connected as a single entity; Entry needle is fixed on the cartridge through the entry needle fixed cover, and is communicated with cartridge;
The motor shaft of motor-driven part is connected with screw rod through shaft coupling; Screw rod and motor shaft rotate synchronously; Screw rod with the synchronous rotation of motor shaft be converted into eject pipe along motor shaft to rectilinear motion; Piston moves with ejecting moving in cartridge of pipe, and the length that ejects pipe is not less than the shift motion length of piston in cartridge.
2. a kind of medicament injector according to claim 1 is characterized in that injecting propulsive units and is provided with to eject and guarantees sheath, ejects pipe and guarantees in the sheath and slide ejecting, and ejects to be provided with between pipe and the piston to eject dish, connects and ejects pipe and piston through ejecting dish.
3. a kind of medicament injector according to claim 2 is characterized in that ejecting and guarantees that the sheath inboard is provided with T type groove, ejects the pipe outside and is provided with and the corresponding projection of T type groove, and said projection slides in T type groove.
4. according to each described a kind of medicament injector of claim 1-3, it is characterized in that motor-driven part, injection propulsive units, injection portion; Control section and power pack all are arranged in the injector housing, and injector housing is a pen type, the motor-driven part; Injection propulsive units and injection portion are arranged on the same axis; Motor-driven partly is positioned at the pen end of pen-type injector housing, and injection portion is positioned at the nib end, and the entry needle of injection portion stretches out injector housing; Correspondence is provided with cap, airtight entry needle.
5. a kind of medicament injector according to claim 4; It is characterized in that the injection portion structure is specially: the end that cartridge connects entry needle stretches out injector housing; The part of stretching out is provided with the cartridge sheath outward; Cap cooperates airtight entry needle with the cartridge sheath, and corresponding entry needle is provided with the entry needle sheath in the cap.
6. according to each described a kind of medicament injector of claim 1-3, it is characterized in that medicament injector is provided with display screen, button, buzzer and USB interface, display screen, button, buzzer and USB interface are connected control section respectively.
7. a kind of medicament injector according to claim 4 is characterized in that medicament injector is provided with display screen, button, buzzer and USB interface, and display screen, button, buzzer and USB interface are connected control section respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102007261A CN101862489B (en) | 2010-06-13 | 2010-06-13 | Medicament injector |
| PCT/CN2011/075659 WO2011157209A1 (en) | 2010-06-13 | 2011-06-13 | Medicine injector, control methods and driving assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102007261A CN101862489B (en) | 2010-06-13 | 2010-06-13 | Medicament injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101862489A CN101862489A (en) | 2010-10-20 |
| CN101862489B true CN101862489B (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102007261A Active CN101862489B (en) | 2010-06-13 | 2010-06-13 | Medicament injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101862489B (en) |
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| CN103656782B (en) * | 2012-09-21 | 2016-04-13 | 上海微创生命科技有限公司 | For monitoring the method and apparatus of the infusion of novopen |
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| CN101862489A (en) | 2010-10-20 |
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Effective date of registration: 20160309 Address after: Wujin District of Jiangsu city of Changzhou province Luoyang 213000 town Cen Village Patentee after: JIANGSU DELFU MEDICAL DEVICES CO., LTD. Address before: 213104, No. 75, Pearl Street, Luoyang Town, Wujin District, Jiangsu, Changzhou Patentee before: Jiangsu Huayang Electrical Appliances Co., Ltd. Patentee before: Nanjing University |