CN115429978B

CN115429978B - Intelligent electronic injector control boosting device

Info

Publication number: CN115429978B
Application number: CN202211151019.7A
Authority: CN
Inventors: 田涧; 金丽娟; 蒋凌锋
Original assignee: Suzhou Fumeilei Medical Technology Co ltd
Current assignee: Suzhou Fumeilei Medical Technology Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-06-30
Anticipated expiration: 2042-09-21
Also published as: CN115429978A

Abstract

The invention relates to an intelligent electronic injector control boosting device, which can be divided into a handle and a host, wherein the handle comprises: the device comprises a push pin force sensor, a sliding table, a magnetic grid ruler sensor, a magnetic grid ruler magnetic strip, a sliding table screw rod guide rail, a sliding table gear motor, a motor encoder, a complex impedance detection module electrode, an RFID module, a handle air pressure sensor, an acceleration and gyroscope sensor and a handle controller. The host computer includes: the device comprises a vacuum pump, an oil-water separator, a silencer, a two-position three-way electromagnetic valve, a host air pressure sensor and a host controller. The host machine is connected with the handle through a cable and a negative pressure pipe. The invention simplifies the operation of operators, improves the injection precision and the injection effect, accelerates the working rhythm and increases the safety; an automatic injector clamping function, an automatic retraction distance setting function, an auxiliary medicament type judging function, and an automatic judging whether a needle effectively pierces the epidermis layer are provided.

Description

Intelligent electronic injector control boosting device

Technical Field

The invention relates to the field of medical appliances, in particular to an intelligent electronic injector control boosting device.

Background

The syringe is an indispensable instrument in the medical care process, and can directly inject the medicine into a human body or a patient position, but the traditional syringe is manually operated during injection, has extremely large error, is easy to hurt a patient and causes great pain to the patient, so the electronic syringe gradually replaces the traditional syringe.

The electronic injector comprises an injector, a controller, a power supply, a needle adsorption device and a pressure control device, wherein the tail end of a handle of the injector is connected with an axial driving device, the needle is positioned in an inner cavity of the needle adsorption device, and the top end of the needle extends out of the needle adsorption device for a certain distance in the vertical direction; the pressure control device comprises an air suction pipe, a pressure relief electromagnetic valve and a micro vacuum pump, wherein two ends of the air suction pipe are respectively connected with the inside of the needle head adsorption device and the air inlet of the pressure relief electromagnetic valve, an air hose is connected between the air outlet of the pressure relief electromagnetic valve and the air inlet of the micro vacuum pump, a pressure sensor is arranged on the air hose, the pressure relief electromagnetic valve, the micro vacuum pump and the driving device are connected with the signal output end of the controller, and the pressure sensor is connected with the signal input end of the controller.

The current general workflow of electronic injectors is: after parameters such as pressure, dosage and speed are set, the controller starts the micro vacuum pump to start working, the controller simultaneously starts to control the pressure relief electromagnetic valve to start working, the pressure relief electromagnetic valve is closed to form a closed negative pressure pipeline, the micro vacuum pump gradually pumps air in the negative pressure pipeline to form a negative pressure environment, negative pressure of minus 0.016 to minus 0.09MPa is generated, the negative pressure is output to the oil-water separator through the pressure relief electromagnetic valve, is output to the air suction pipe through the oil-water separator, and is finally output to the needle head adsorption device through the connection of the air suction pipe. When the pressure sensor detects that the pressure reaches the set range, the negative pressure is indicated to adsorb skin on the needle head, and the controller controls the driving device to drive the injector pushing device on the electronic injector handle to start working, and the injector pushing device is pushed forward.

However, the prior art electronic injector has the following drawbacks:

first, after the completion of the installation of the syringe filled with the medicine, it is necessary to manually operate the slide advance button, carefully controlling the slide to be in slight contact with the syringe push button. However, if the manual operation sliding table is not advanced enough, the initial few times of injection can be discharged out insufficiently, and even the risk of air injection exists; if the sliding table is manually operated to move excessively, excessive liquid medicine can be extruded, so that waste is caused.

Secondly, the traditional electronic injector needs to manually set the rollback parameter of the sliding table, and the parameter is generally set by an operator according to experience, is influenced by subjective judgment of the operator, and has high randomness. For liquid medicine with different viscosity, the suitable sliding table backspacing parameters are different, in general, the more viscous the liquid medicine, the larger the backspacing parameters need to be set, and when the backspacing parameters of the sliding table are set too large, the operation time is wasted; when the setting of the rollback parameters of the sliding table is too small, continuous pressure is applied to the push button of the injector after the injection is completed, so that the liquid leakage phenomenon is caused, and the liquid medicine is wasted.

Third, the conventional electronic injector cannot know the type of medicine filled by an operator and cannot predict the type of medicine used.

Fourth, when the conventional electronic injector uses a hydro-optical needle with an adjustable needle tip length, it cannot be known whether the needle effectively pierces the epidermis. If the needle fails to penetrate the epidermis layer effectively, the liquid medicine is not injected into the skin actually, and the injection is ineffective, which is equivalent to the smearing operation of the liquid medicine on the epidermis.

Fifthly, in the traditional electronic injector, the rotating speed feedback relied on by the dosage control is only positioned at the tail part of the speed reducing motor, is half-open loop detection, is not accurate enough in the injection dosage control, and the absolute position of the sliding table is not known from the traditional electronic injector.

Sixth, before the injector with the medicament is installed, the traditional electronic injector needs to manually and continuously press the retreating button of the sliding table, so that the sliding table leaves enough space for installing the injector. Because the controller of the traditional electronic injector does not know the absolute position of the sliding table, when an operator keeps pressing the sliding table back button after the sliding table has been backed to the final maximum back position intentionally or unintentionally, faults such as motor stalling, sliding table damage and the like can be caused.

Seventh, in the use process of the electronic injector, the negative pressure tube is blocked due to the inhalation of the liquid medicine, which is a common fault. The traditional electronic injector is only provided with a single pressure sensor, and when the negative pressure pipe is blocked, the situation that the needle is still continuously sucked into the skin and the pushing process is continuously repeated can be misjudged. Meanwhile, if the liquid medicine overflows excessively after entering the oil-water separator, the liquid medicine can continuously enter the vacuum pump to cause the damage of the vacuum pump.

Eighth, the traditional electronic injector is used for detecting whether the water optical needle head is reliably adsorbed on the skin or not by continuously detecting whether the air pressure obtained by the air pressure sensor reaches a preset value while the vacuum pump is started and the pressure relief electromagnetic valve is closed. When the hydro-optical needle head is attached to the skin, the vacuum pump needs to pump air from normal pressure to a preset negative pressure value in the space between the negative pressure pipeline and the oil-water separator, so that injection can be started, the space is relatively large, the vacuum pump is limited by noise and the size, the model with overlarge flow is not selected to improve the speed, and the vacuumizing process needs to last for several seconds to more than ten seconds to finish, so that the working efficiency is seriously influenced.

And the needle head adsorption device and the pressure control device are connected through cable communication, the needle head adsorption device is held by an operator, portability is required, the cable is generally reserved with enough length according to different environments and heights of the operator, and the cable is wound on the reserved quantity of the cable through a winding wheel at present. However, when an operator operates, the shaking of the needle head adsorption device transmits the fluctuation to the pressure control device, so that the cable interface is easy to loosen and even fatigue fracture; moreover, at present, the cable can not be suspended by the winding wheel, the cable is towed on the ground under the gravity, the walking of pedestrians is hindered, and the cable connector is more easily loosened by the generated stumbling, and the cable is released by the winding wheel.

In view of the above, there are currently some applications of electronic injectors.

Disclosure of Invention

According to the problems set forth in the background art, the present invention provides an intelligent electronic injector control boosting device to solve the problems, and the present invention is further described below.

An intelligent electronic injector control boost device, comprising:

the handle comprises a sliding table screw rod guide rail, the top of the sliding table screw rod guide rail is connected to the output of a sliding table gear motor, a motor encoder is electrically connected to the sliding table gear motor, the bottom of the sliding table screw rod guide rail is connected with a complex impedance detection module, and the complex impedance detection module is electrically connected with a protruding impedance detection module electrode; the sliding table lead screw guide rail is also provided with a magnetic bar strip of a magnetic bar, and is connected with a sliding table, and the sliding table is provided with a magnetic bar sensor and a push pin force sensor; the bottom of the injector is abutted against the electrode of the impedance detection module and fixed through a clamping assembly connected to a guide rail of the sliding table screw rod, the push needle force sensor extrudes an injector push button of the injector, and a cavity of a water optical needle head of the injector is connected with the negative pressure pipe;

the host comprises a vacuum pump, an oil-water separator, a silencer, a two-position three-way electromagnetic valve, a host air pressure sensor and a host controller which are connected through a negative pressure pipe; the negative pressure side of the vacuum pump is connected with an oil-water separator, the positive pressure side is connected with a silencer and the N2 end of the two-position three-way electromagnetic valve, the oil-water separator is connected with the N3 end of the two-position three-way electromagnetic valve and also is connected with a host air pressure sensor, and the N1 end of the two-position three-way electromagnetic valve outputs a host and is connected with the handle air pressure sensor and a water light needle;

the host machine is connected with the handle through a cable and a negative pressure pipe; the magnetic grating ruler sensor, the motor encoder, the complex impedance detection module, the RFID module and the handle air pressure sensor are connected with the handle controller through a circuit, and the handle controller is further provided with an acceleration sensor and a gyroscope sensor which are electrically connected with the water needle head and used for acquiring the vibration state of the water needle head when the water needle head contacts a human body.

Preferably, the clamping assembly comprises a housing connected to the guide rail of the sliding table screw rod, the housing is annular, a raised positioning cylinder is integrally connected to the inner bottom of the housing, a rotating wheel is coaxially sleeved outside the positioning cylinder, a pulling hand is connected to the outer edge of the rotating wheel, and the pulling hand extends out of the housing from a through hole formed in the housing; the rotary wheel is provided with push grooves in an array manner, the distances between each point of the axis of the push grooves and the circle center are increased or decreased progressively, the rotary wheel is connected with the housing through torsion springs, the top of the positioning cylinder is provided with a containing groove, the torsion springs are placed in the containing groove, one arm of each torsion spring is clamped on the top wall of the housing, the other arm of each torsion spring is clamped on the rotary wheel, and the width of each containing groove is larger than the diameter of each torsion spring; each push groove is provided with a push rod, the push rod comprises a vertical rod part and a cross rod part which are connected, the vertical rod part is matched with the push groove, and the cross rod part penetrates through the positioning cylinder and is connected with a chuck; the housing is also internally provided with an angle sensor for measuring the rotation angle of the rotating wheel, and the angle sensor is electrically connected to the handle controller.

Preferably, after the automatic setting retraction distance mode is set, the push pin force sensor measures the pressure of the sliding table on the push button of the injector, the sliding table is controlled to retract automatically after the single injection is finished, meanwhile, whether the pressure value is zero is detected, and the sliding table stops moving backwards by about 1mm after the pressure value is zero. The device has the advantages that the continuous pressure is not applied to the syringe press, the parameter setting can be reduced, the purposes of reducing medicine leakage and not wasting operation time can be achieved only by setting the device automatically, an operator is not required to judge according to the type of the medicine and the size of the syringe, the parameter is set manually, the device is objective and reliable, and the device is easy to use.

Preferably, a table corresponding to the thrust, the diameter of the syringe and the type of the injected medicament is preset in the host, and after the injection thrust parameter is obtained through measurement of the push needle force sensor and the diameter parameter of the syringe is obtained through the angle sensor, the type of the injected medicament can be obtained through searching the corresponding table to be used as a reference for pre-judging.

Preferably, the numerical difference between the main machine air pressure sensor and the handle air pressure sensor is used for judging whether the negative pressure pipe is blocked, and when the detected difference exceeds a threshold value, the negative pressure pipe is judged to be blocked. At the moment, the working is stopped, the user is prompted to perform corresponding treatment, and early warning can be performed before the liquid medicine enters the host machine, so that more serious damage is avoided.

Preferably, when the injection gap needs to be depressurized, the two-position three-way electromagnetic valve is switched to only depressurize the negative pressure pipe, so that the oil-water separator keeps the original negative pressure or is pumped to a lower negative pressure in advance according to the volume ratio of the negative pressure pipe to the oil-water separator. Maintaining the negative pressure state of the pipeline, and maintaining the pipeline air pressure at a low pressure at the instant of recovery after pressure relief;

when whether the water optical needle head is reliably adsorbed on the skin needs to be detected, the two-position three-way electromagnetic valve is switched to be communicated with the negative pressure pipe, the oil-water separator and the vacuum pump, the vacuum degree pre-stored in the oil-water separator and the vacuum pump in operation pump together pump the water optical needle head from normal pressure to a preset negative pressure value through the negative pressure pipe, and if the water optical needle head 9 is attached to the skin, the preset negative pressure value can be reached in less than 1 second to start injection.

Preferably, the device also comprises a winding assembly, comprising an outer sleeve column, wherein an inner slide rod is coaxially sleeved in the outer sleeve column, and a telescopic pulling button is arranged at the top of the outer sleeve column and used for clamping the inner slide rod to enable the inner slide rod to be positioned at a target height; the top of the inner slide bar is fixedly connected with a bracket, and a coiling wheel is pivoted on the bracket and used for coiling a cable.

Preferably, the top of the inner sliding rod is provided with two through and vertically intersected sliding grooves, a push rod and a push rod are respectively arranged in the sliding grooves, and the surface of the push rod is provided with a wedge surface; the ejector rod is provided with a through groove, the bottom surface of the through groove is also provided with a wedge surface, and one end of the ejector rod exposed out of the top surface of the inner slide rod is connected with a rotation stopping block; a spring sleeved outside the ejector rod is arranged between the rotation stopping block and the top surface of the inner sliding rod, and the spring is always in a compressed state. In the normal application process, the length of the cable which can be freely controlled is constant, and the cable is not released due to shaking in the use process of the handle; when the free section cable is involved by the moving body under the accidental condition, the cable can be prevented from being pulled and broken; when the length of the cable which is released or retracted into the free section is required to be adjusted, the cable can be released or retracted by freely rotating the winding wheel only by pushing the push rod.

The beneficial effects are that: compared with the prior art, the invention simplifies the operation of operators, improves the injection precision and the injection effect, accelerates the working rhythm and increases the safety. While at the same time providing verification services and after-market tracking. The invention provides the functions of automatically clamping the injector, automatically setting the backset distance, assisting in judging the type of the medicament, and automatically judging whether the needle effectively pierces the epidermis layer, and the whole device measures the absolute position of the sliding table through the magnetic grid ruler sensor, so that errors caused by gaps in the transmission process are avoided; the handle and the host are respectively provided with a pressure sensor to judge whether the negative pressure pipe is blocked; partial partition pressure release control of the pipeline is realized through a two-position three-way electromagnetic valve, and the pipeline is used for matching multiple working modes; the precision and the applicability of the device are improved through multiple angles.

Drawings

Fig. 1: the handle of the device is a schematic structural diagram;

fig. 2: the air circuit schematic diagram of the host structure of the device of the invention;

fig. 3: a structural cross-sectional view of the clamping assembly;

fig. 4: a structural top view schematic of the interior space of the housing;

fig. 5: an RFID information flow block diagram;

fig. 6: a structural schematic diagram of the coil winding assembly;

fig. 7: FIG. 6 is a partial cross-sectional view of the structure at A;

in the figure: 1-push needle force sensor, 2-injector push button, 3-slipway, 4-magnetic grating ruler sensor, 5-magnetic grating ruler magnetic stripe, 6-slipway screw guide rail, 7-slipway gear motor, 8-motor encoder, 9-hydro needle head, 10-complex impedance detection module, 11-complex impedance detection module electrode, 12-RFID module, 13-vacuum pump, 14-oil water separator, 15-silencer, 16-two-position three-way electromagnetic valve, 17-host air pressure sensor, 18-handle air pressure sensor, 19-acceleration and gyroscope sensor, 20-injector, 21-housing 21, 211-through hole, 22-positioning cylinder, 221-accommodation groove, 23-runner, 231-push groove, 232-slot, 24-dial hand, 25-torsion spring, 26-push rod, 261-montant part, 262-cross rod part, 27-collet, 28-outer sleeve column, 281-bolt hole, 29-inner slide rod, 291-runner, 30-telescopic dial button, 31-bracket, 32-push rod, 33-push rod, 331-35-wedge, and 37-wedge.

Detailed Description

A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1-2, an intelligent electronic injector control boosting device comprises a handle and a host, wherein the handle comprises: push pin force sensor 1, slip table 3, magnetic grid chi sensor 4, magnetic grid chi magnetic stripe 5, slip table lead screw guide rail 6, slip table gear motor 7, motor encoder 8, complex impedance detection module 10, complex impedance detection module electrode 11, RFID module 12 and handle barometric sensor 18, acceleration and gyroscope sensor 19, handle controller. The host computer includes: the device comprises a vacuum pump 13, an oil-water separator 14, a silencer 15, a two-position three-way electromagnetic valve 16, a host air pressure sensor 17 and a host controller. The host machine is connected with the handle through a cable and a negative pressure pipe, and the functions of communication, power supply and ventilation are respectively achieved.

The handle is held by an operator, the injector 20 which is used for installing the injector which is loaded with the water optical needle 9 and is filled with liquid medicine is used, the whole injector 20 is fixed on the sliding table wire guide rail 6 through an electrode 11 of an impedance detection module, the electrode 11 of the impedance detection module is fixed with the magnetic tape 5, the sliding table wire guide rail 6, the sliding table gear motor 7, the motor encoder 8, the acceleration and the gyroscope sensor 19, the output of the sliding table gear motor 7 is connected with the screw rod of the sliding table wire guide rail 6, and when the sliding table gear motor 7 rotates under control, the sliding table moves linearly on the sliding table wire guide rail 6, namely, the sliding table 3 rotates by the sliding table gear motor 7 to control the advancing and retreating of the sliding table. The push needle force sensor 1, the sliding table 3 and the magnetic grid ruler sensor 4 are fixed together, and when the sliding table advances, the push needle force sensor 1 can be used for extruding the injector push button 2 at the tail part of the injector, so that the liquid medicine can be extruded from the water needle head 9. The water optical needle head 9 is provided with a cavity at one end, and is connected with a negative pressure pipe, and the negative pressure pipe is connected with a handle air pressure sensor 18 and a host.

The magnetic grating ruler sensor 4, the motor encoder 8, the complex impedance detection module 10, the RFID module 12, the handle air pressure sensor 18, the acceleration and gyroscope sensor 19 are connected with a handle controller through a circuit, the handle controller collects signals of the sensors, and a motor driving circuit is arranged in the handle controller and can drive the sliding table gear motor 7 to rotate forwards or reversely.

The host computer is generally fixed and placed at a position which is convenient for operation beside an operator, and the vacuum pump 13, the oil-water separator 14, the silencer 15, the two-position three-way electromagnetic valve 16 and the host computer air pressure sensor 17 are connected through an air passage by a negative pressure pipe, the host computer controller collects signals of the host computer air pressure sensor 17, and a driving circuit is arranged in the host computer controller and can control the opening or closing of the vacuum pump 13 and the two-position three-way electromagnetic valve 16. The host controller comprises a power supply, a control circuit board and a touch screen, wherein the power supply is connected with the control circuit board, the control circuit board is connected with the touch screen and the wireless communication module, the control circuit board is connected with the handle controller through a cable, and an operator can set various parameters of the intelligent electronic injector control boosting device through the touch screen and check the running state.

The magnetic bar ruler magnetic strip 5 is attached to the sliding table screw guide rail 6, and the magnetic bar ruler sensor 4 keeps a relatively short distance with the magnetic bar ruler magnetic strip 5 to induce magnetic field change when moving. The complex impedance detection module 10 is in communication connection with the complex impedance detection module electrode 11, and the complex impedance detection module electrode 11 is in contact with the hydro-optical needle 9 to generate alternating current coupling.

In the embodiment, the high-precision action control is performed on the sliding table 3 through the magnetic grid ruler sensor 4 and the magnetic grid ruler magnetic strip 5, and closed-loop control can be optimized to further improve the control precision, so that the injection requirement is met, and the electric control part is protected. The magnetic grid ruler sensor is used for measuring the absolute position of the sliding table, and the occurrence of errors caused by gaps in the transmission process is avoided. The absolute position signal of the magnetic grid ruler sensor is used for controlling injection dosage, and meanwhile, the rotating speed signal of the original gear motor is compared, so that the accuracy and reliability are improved.

In order to reduce medicine leakage, the device can be provided with an automatic setting backspacing distance, the push needle force sensor 1 arranged on the handle of the device is used for measuring the pressure of the sliding table on the push button 2 of the injector, after single injection is completed, the sliding table 3 is controlled to automatically backspacing, meanwhile, whether the pressure value is zero is detected, and when the pressure value is zero, the device is stopped after being moved backwards by a preset distance, such as a macroscopic distance of 1mm, so as to ensure that no continuous pressure is applied on the injector. The function can reduce the setting of parameters, can achieve the purposes of reducing medicine leakage and not wasting operation time only by setting the function automatically, does not need an operator to judge according to the type of the medicine and the size of the injector and manually set the parameters, is more objective and reliable, and improves the usability of the equipment; meanwhile, the absolute position of the sliding table is known based on the magnetic grid ruler sensor, and then the sliding table is controlled to automatically retract to a space enough for installing the injector, and then the sliding table is stopped.

As explained in the background, conventional electronic injectors are not aware of the type of medicament filled by the operator, and in practice, there are various types of medicament, several types being common for a certain subdivision, such as cosmetology, with diameters of common specifications according to standard injectors. In the pushing process of the sliding table, the device can measure and record the maximum pressure when the sliding table advances to push the pushing button of the injector, and judge the type of medicament filled by an operator according to the maximum pressure. When the diameter of the filling injector is larger, the concentration of sodium hyaluronate in the liquid medicine is higher, the maximum pressure required for pushing is larger, the type of the medicine can be known by comparing the medicine with a preset stored data table, and the medicine is corresponding to the concentration of sodium hyaluronate because the type of the medicine frequently used by the same operator is constant, so the type of the medicine can be pre-determined by measuring the maximum pushing force of the pushing button of the injector, and a reference is provided for the operator on the type of the medicine and whether the medicine is deteriorated.

Referring to fig. 3-4, according to the above, the device of the present invention pre-determines that the thrust force needs to be measured for the diameter of the injector, and the different diameter injectors are required to be fixed in an adjustable manner during installation, and this embodiment gives an example: the sliding table lead screw guide rail 6 is connected with a cover shell 21, the cover shell 21 is in a circular shape, an inner hole of the cover shell 21 is used for penetrating through the injector, a raised positioning cylinder 22 is integrally connected to the inner bottom of the cover shell 21, a rotating wheel 23 is coaxially sleeved outside the positioning cylinder 22, the rotating wheel 23 has rotational freedom degree, the outer edge of the rotating wheel is connected with a poking hand 24, the poking hand 24 extends out of the cover shell from a through hole 211 formed in the cover shell 21 and is used as a poking part of an operator, and the rotating wheel 23 can be driven to rotate around the positioning cylinder 22 by poking the poking hand 24. The rotary wheel 23 is provided with push grooves 231 in an array, the distance between each point of the axis of the push grooves and the circle center increases or decreases gradually, the rotary wheel 23 is connected with the housing 21 through a torsion spring 25, the top of the positioning cylinder 22 is provided with a containing groove 221, the torsion spring 25 is placed in the containing groove 221, one arm of the torsion spring is clamped on the top wall of the housing, the other arm is clamped in a slot 232 on the rotary wheel 23, namely, one arm of the torsion spring is relatively fixed with the housing, the other arm rotates along with the rotary wheel, the torsion spring forms an energy storage elastic component, the width of the containing groove 221 is larger than the spring diameter of the torsion spring, the torsion spring is easy to place, more importantly, the diameter of the torsion spring changes dynamically in the forming process of the torsion spring, and the containing groove provides a space for deformation of the torsion spring besides the placement of the torsion spring. Each push groove 231 is provided with a push rod 26, the push rod 26 comprises a vertical rod portion 261 and a cross rod portion 262 which are connected, the vertical rod portion 261 is matched with the push grooves 231, the cross rod portion 262 penetrates through the positioning barrel 22 and is connected with a clamping head 27, the push rod 26 is guided based on the positioning barrel 22, and the push rods 26 are symmetrically arranged based on the push grooves 231, so that the movements of the push rods 26 are synchronous and consistent, and the clamping head 27 is controlled to clamp or release the syringe together.

When the injector is installed, the poking hand 24 of the exposed housing is poked firstly, the rotating wheel 23 is driven to rotate, the rotating wheel drives the push rod 26 to retract, the torsion spring is twisted to store energy, the clamping head synchronously exits from the installation space of the reserved injector, then the injector is installed downwards from the axis, the bottom of the injector is abutted against the electrode 11 of the complex impedance detection module, the poking hand 24 is released, the rotating wheel is driven to rotate under the elastic force of the restoring deformation of the torsion spring and pushes out the push rod 26, and the clamping head is clamped on the outer wall of the injector, so that the clamping and fixing effects on the injector are realized.

To obtain a pre-determination of the type of medicament, it is necessary to obtain parameters of the syringe diameter and thrust. In this embodiment, the pushing force is obtained by a push needle force sensor installed on the handle, and as for the diameter of the injector, it can be seen from the foregoing that the difference of the diameter of the injector is reflected on the rotation angle of the rotating wheel 23, and the diameter of the injector is only in a standard specification, that is, corresponds to the set rotation angle of the rotating wheel 23, so the present invention is further provided with an angle sensor (not shown) built in the housing 21 for obtaining the rotation angle of the rotating wheel, and the angle sensor is not described as the embodiment of the conventional technology. It should be noted that, the rotating wheel 23 also plays a role in actually enlarging the measurable range of the diameter of the syringe, and the diameter level of the conventional syringe is not greatly different.

The invention provides the function of automatically clamping the injector by virtue of the push pin force sensor: when the automatic clamping injector function is activated, the sliding table moves backwards a small distance to ensure that the pressure is recorded without contacting any object, and then moves forwards automatically until the pressure is detected to be higher than the pressure recorded before, and the sliding table stops. The function can simplify the operation of an operator, the clamping can be automatically finished by only installing the injector filled with the medicament and starting the function, the clamping action is finished without manually controlling the position of the sliding table by the operator, and the energy of the operator is saved.

The complex impedance detection module electrode 11 is used for bearing the injector, and is also matched with the complex impedance detection module 10 to judge whether the needle effectively pierces the epidermis layer. The complex impedance detection module arranged on the handle of the machine can generate a high-frequency alternating signal to be connected with the detection electrode, the high-frequency alternating signal is coupled to the needle through the capacitance of the injector in an alternating mode, and when the complex impedance detection module works, the amplitude and the phase of the voltage and the current of the high-frequency alternating signal are detected to measure the complex impedance of the circuit. It is well known that the epidermis layer of skin consists of dead keratinocytes, with a low water content and a high electrical resistance; the dermis is a living cell with high water content and low electrical resistance. When the needle pierces the epidermis layer to reach the dermis layer, a significant decrease in resistance can be observed, from which it can be determined whether the needle tip penetration depth is appropriate. The function can provide reference for the length adjustment of the water needle head with the changeable needle tip length, and the injection effect is improved.

Referring to fig. 2, the negative pressure side oil-water separator 14, the positive pressure side silencer 15 and the N2 end of the two-position three-way electromagnetic valve 16 of the vacuum pump 13 are connected with the N3 end of the two-position three-way electromagnetic valve 16 and the host air pressure sensor 17, the N1 end of the two-position three-way electromagnetic valve 16 outputs a host, and is connected with the handle air pressure sensor 18 and the water needle 9; the acceleration and gyro sensor 19 is electrically connected to the hydro-optical needle 9 for sensing vibration when the hydro-optical needle 9 contacts the human body.

And a pressure sensor (17/18) is respectively arranged at the handle and the host, and if a large difference between the pressure sensors is detected in the working process of the vacuum pump, the negative pressure pipe can be judged to be blocked, the working is stopped, and a user is prompted to perform corresponding treatment. The function can make early warning before the liquid medicine enters the host computer, so that more serious damage is avoided.

The two-position three-way electromagnetic valve 16 provided by the invention can be switched to only release the negative pressure of the negative pressure pipe when the injection gap needs to release pressure, the oil-water separator 14 keeps the original negative pressure, or the negative pressure state of the pipeline is maintained by pumping the negative pressure pipe to be lower than the oil-water separator according to the volume ratio of the negative pressure pipe and the oil-water separator, and the pipeline air pressure can still be maintained at low pressure at the recovery moment after the pressure release. When it is required to detect whether the water optical needle 9 is reliably adsorbed on the skin, the two-position three-way electromagnetic valve 16 is switched to communicate the negative pressure pipe with the oil-water separator 14 and the vacuum pump 13, the vacuum degree pre-stored in the oil-water separator 14 and the working vacuum pump 13 pump the water optical needle 9 together through the negative pressure pipe from normal pressure to a preset negative pressure value, so, if the water optical needle 9 is attached to the skin, the injection can be started after reaching the preset negative pressure value in less than 1 second.

As described above, in the use of the intelligent electronic injector control boost, the opening timing of the two-position three-way solenoid valve 16 is related to the user experience. If the two-position three-way solenoid valve 16 opens too quickly, the operator is not enough to remove the handle, causing repeated injections at the same location; if the two-position three-way solenoid valve 16 is opened too slowly, the operation time is wasted and the efficiency is lowered. Further, the accelerometer and the gyroscope sensor 19 are arranged at the handle, so that the acceleration and the angular velocity of the handle can be continuously measured, when the opening time is set to be in an automatic mode, the signal that the handle touches the skin is detected to inform the host to open the two-position three-way electromagnetic valve, and at the moment, the preset negative pressure value can be reached as soon as possible because the water needle is or is about to be closely attached to the skin. The function can open the two-position three-way electromagnetic valve as soon as possible on the premise of not causing repeated injection, and the injection efficiency is improved.

Referring to fig. 5, the RFID module is further arranged on the handle, so that anti-counterfeiting information of the needle and the prefilled injection can be read, transmitted to the host through the handle cable, and then transmitted to the background cloud together with state parameters of the host through the communication module (such as a 4G or WIFI module) to carry out verification service and after-sale tracking, thereby being convenient for agents to carry out targeted maintenance on equipment, solving the possible problem of sales of non-genuine medicaments, needle or non-regular channels, and controlling the boosting device to carry out after-sale tracking maintenance on the sold intelligent electronic injector.

The invention divides the whole device into two parts of the handle and the host, the two parts are connected through the cable communication, in practice, the host is generally fixed at a certain position, and the handle is held by an operator and freely moves, so that the operation has great flexibility. It should be noted, however, that this would require the cable to have a length sufficient to accommodate operators of different heights and different space layout requirements, and that the longer cable would be towed on the bottom surface, not only making the operator's movement of the handle laborious, but also the towed cable on the ground would be easily pulled by the moving body to break, especially at the cable interface site. Based on this, the invention is also provided with a reel assembly aimed at enabling the operator to select the appropriate cable length according to the operating environment, in particular: referring to fig. 6 to 7, the device comprises an outer sleeve column 28, wherein the bottom of the outer sleeve column is fixed on a base through a bolt hole 281 matched with a bolt, an inner slide rod 29 is coaxially sleeved in the outer sleeve column 28, and a telescopic pulling button 30 is arranged at the top of the outer sleeve column 28 and used for clamping the inner slide rod to enable the inner slide rod to be positioned at a target height; the top of the inner slide bar 29 is fixedly connected with a bracket 31 on which a reel 32 for winding a cable is pivoted, the cable wound thereon having two wire-out ends, respectively connected to the handle and to the controller of the host, the reel taking up the redundancy of the cable.

Referring to fig. 7, two sliding grooves 291 penetrating and vertically intersecting are provided at the top of the inner sliding rod 29, a push rod 33 and a push rod 34 are respectively provided in the sliding grooves, a wedge surface 331 is provided on the surface of the push rod 33, a through groove 341 is correspondingly provided on the push rod 34, a wedge surface is also provided on the bottom surface of the through groove, one end of the push rod 34 exposed out of the top surface of the inner sliding rod 29 is connected with a rotation stopping block 35, and the rotation stopping block can be in surface contact with the rotating shaft 36 of the winding wheel; a spring 37 sleeved outside the ejector rod is arranged between the rotation stopping block 35 and the top surface of the inner slide rod 29, and is always in a compressed state, namely, the rotation stopping block is always pressed against the rotating shaft 36 by elastic force. In the normal application process, the length of the freely controllable cable is constant, and at the moment, the rotation stopping block is tightly pressed on the rotating shaft under the elasticity of the spring, so that the winding wheel is in a rotation stopping state under the resistance of friction force, the shaking of the handle in the use process is transmitted to the winding wheel through the cable of the free section, the winding wheel cannot be rotated, and the cable is not released; when the free section cable is pulled by the moving body under the accidental condition, the cable is pulled, and the winding wheel rotates against the friction force between the rotation stopping block and the rotating shaft caused by the elastic force of the spring at the moment, so that the cable is prevented from being broken; when the length of the cable which is released or retracted into the free section needs to be adjusted, the push rod 33 is only required to be pushed, the push rod presses down one end distance through the surface contact effect of the inclined surface of the push rod, the rotation stopping block is separated from the rotating shaft, and the cable can be released or retracted by the reel in a free rotation mode.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent electronic injector control boosting device is characterized by comprising:

the host machine is connected with the handle through a cable and a negative pressure pipe; the magnetic grating ruler sensor, the motor encoder, the complex impedance detection module and the handle air pressure sensor are connected with the handle controller through a circuit, and the handle controller is also provided with an acceleration sensor and a gyroscope sensor which are electrically connected with the water needle head and are used for acquiring the vibration state when the water needle head contacts a human body;

the clamping assembly comprises a housing connected to the guide rail of the sliding table screw rod, the housing is annular, a raised positioning cylinder is integrally connected to the inner bottom of the housing, a rotating wheel is coaxially sleeved outside the positioning cylinder, a pulling hand is connected to the outer edge of the rotating wheel, and the pulling hand extends out of the housing from a through hole formed in the housing; the rotary wheel is provided with push grooves in an array manner, the distances between each point of the axis of the push grooves and the circle center are increased or decreased progressively, the rotary wheel is connected with the housing through torsion springs, the top of the positioning cylinder is provided with a containing groove, the torsion springs are placed in the containing groove, one arm of each torsion spring is clamped on the top wall of the housing, the other arm of each torsion spring is clamped on the rotary wheel, and the width of each containing groove is larger than the diameter of each torsion spring; each push groove is provided with a push rod, the push rod comprises a vertical rod part and a cross rod part which are connected, the vertical rod part is matched with the push groove, and the cross rod part penetrates through the positioning cylinder and is connected with a chuck; the housing is also internally provided with an angle sensor for measuring the rotation angle of the rotating wheel, and the angle sensor is electrically connected to the handle controller.

2. The intelligent electronic injector control boost device of claim 1, wherein: after the automatic setting back distance mode is set, the push pin force sensor measures the pressure of the sliding table to the push button of the injector, after single injection is completed, the sliding table is controlled to automatically back, meanwhile, whether the pressure value is zero is detected, and after the pressure value is zero, the sliding table moves backwards for a preset distance and then stops.

3. The intelligent electronic injector control boost device of claim 1, wherein: the corresponding table of the thrust, the diameter of the injector and the type of the injected medicament is preset in the host, the injection thrust parameter is obtained through measurement of the push needle force sensor, and the diameter parameter of the injector is obtained through the angle sensor, and then the type of the injected medicament can be obtained through searching the corresponding table to be used as a reference for pre-judging.

4. The intelligent electronic injector control boost device of claim 1, wherein: after the automatic injector clamping function is started, the sliding table moves backwards for a small distance to ensure that the sliding table does not contact any object to record the pressure at the moment, and then moves forwards automatically until the pressure is detected to be higher than the pressure recorded before, and the sliding table stops.

5. The intelligent electronic injector control boost device of claim 1, wherein: the numerical value difference between the main machine air pressure sensor and the handle air pressure sensor is used for judging whether the negative pressure pipe is blocked, and when the detected difference exceeds a threshold value, the negative pressure pipe is judged to be blocked.

6. The intelligent electronic injector control boost device of claim 1, wherein:

when the injection gap needs to be depressurized, the two-position three-way electromagnetic valve is switched to only depressurize the negative pressure pipe, and the oil-water separator keeps the original negative pressure or is pumped to a lower negative pressure in advance according to the volume ratio of the negative pressure pipe to the oil-water separator;

when whether the water optical needle head is reliably adsorbed on the skin needs to be detected, the two-position three-way electromagnetic valve is switched to be communicated with the negative pressure pipe, the oil-water separator and the vacuum pump, the vacuum degree pre-stored in the oil-water separator and the vacuum pump in operation pump together pump the water optical needle head from normal pressure to a preset negative pressure value through the negative pressure pipe, and if the water optical needle head is attached to the skin, the preset negative pressure value can be reached in less than 1 second to start injection.

7. The intelligent electronic injector control boost device of claim 1, wherein: the handle also comprises an RFID module for reading the anti-counterfeiting information of the needle head and the prefilled injection, the anti-counterfeiting information is transmitted to the host through the handle and the cable, and the anti-counterfeiting information is transmitted to the background cloud together with the state parameters of the host through the communication module on the host for verification service and after-sale tracking.

8. The intelligent electronic injector control boost device of claim 1, wherein: the winding assembly comprises an outer sleeve column, an inner slide rod is coaxially sleeved in the outer sleeve column, and a telescopic pulling button is arranged at the top of the outer sleeve column and used for clamping the inner slide rod to enable the inner slide rod to be positioned at a target height; the top of the inner slide bar is fixedly connected with a bracket, and a coiling wheel is pivoted on the bracket and used for coiling a cable.

9. The intelligent electronic injector control boost device of claim 8, wherein: the top of the inner sliding rod is provided with two through and vertically intersected sliding grooves, a push rod and a push rod are respectively arranged in the sliding grooves, and the surface of the push rod is provided with a wedge surface; the ejector rod is provided with a through groove, the bottom surface of the through groove is also provided with a wedge surface, and one end of the ejector rod exposed out of the top surface of the inner slide rod is connected with a rotation stopping block; a spring sleeved outside the ejector rod is arranged between the rotation stopping block and the top surface of the inner sliding rod, and the spring is always in a compressed state.