CN210447770U - A micro-injection pump - Google Patents

Abstract

The application discloses a micro-injection pump includes: at least two syringes; the device comprises at least two propelling mechanisms, a driving mechanism and a driving mechanism, wherein the propelling mechanisms are used for propelling the injector and comprise a screw rod, a driving part and a transmission nut arranged on the screw rod, the driving part is used for rotating the screw rod, the transmission nut is used for transmitting along the direction of the screw rod, and a pushing rod used for pushing the injector is arranged on the transmission nut; the sensor is used for sensing the injection flow rate and the injection pressure in the injector and sending flow rate and pressure signals to the controller; the controller is used for receiving the flow rate and pressure signals sent by the sensor and controlling the rotating speed of the driving part. Compared with the prior art, the medicine can be replaced under the condition of keeping the medicine input speed unchanged.

Description

Micro-injection pump

Technical Field

The application relates to the technical field of medical instruments, in particular to a micro-injection pump.

Background

The micro-injection pump is an instrument which is frequently used in clinical medical treatment and life science research and is used for carrying out uniform micro-injection for a long time, and is mainly applied to arterial and venous transfusion, antishock treatment, injection of anesthetic and the like. Compared with manual injection, the micro-injection pump has the following advantages: first, constant injection can be performed for long periods (> 24h) to maintain strictly the required concentration of drug in the blood; secondly, the curative effect and the treatment quality of the medicine are improved; and thirdly, the injection data can be output and printed to manufacture electronic cases, so that the requirements of hospital management networking and informatization management are met.

At present, the micro pump can accurately, micro and uniformly inject the medicine into the body of a patient to ensure the effective concentration of the medicine in blood, so the micro pump is widely used in the critical medicine department. Most patients in the department of severe medical science are critical and the disease changes rapidly. For critically and unstable patients, when the micro pump is replaced, particularly when life-sustaining drugs such as dopamine and norepinephrine are replaced, the interruption of drug input can seriously and badly affect the illness state of the patients, and seriously threaten the lives of the patients.

Therefore, it is an urgent technical problem for those skilled in the art to provide a micro syringe pump to replace the drug while maintaining the drug infusion rate.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, a micro-injection pump is provided, so that the medicine can be replaced under the condition of keeping the medicine input speed unchanged.

The technical scheme provided by the application is as follows:

the utility model provides a micro-injection pump, include:

at least two syringes;

the device comprises at least two propelling mechanisms, a driving mechanism and a driving mechanism, wherein the propelling mechanisms are used for propelling the injector and comprise a screw rod, a driving part and a transmission nut arranged on the screw rod, the driving part is used for rotating the screw rod, the transmission nut is used for transmitting along the direction of the screw rod, and a pushing rod used for pushing the injector is arranged on the transmission nut;

the sensor is used for sensing the injection flow rate and the injection pressure in the injector and sending flow rate and pressure signals to the controller; the controller is used for receiving the flow rate and pressure signals sent by the sensor and controlling the rotating speed of the driving part.

Preferably, the syringe comprises a push piston and a body provided with an injection port, and the push piston is connected with the push rod.

Preferably, the driving part is embodied as a stepping motor.

Preferably, the micro-injection pump further comprises an injection tube, the injection tube comprises an injection main tube and at least two injection branch tubes, one end of each injection branch tube is connected with the injection port of the injector, and the other end of each injection branch tube is communicated with the injection main tube.

Preferably, the sensor includes a flow rate sensor and a hydraulic pressure sensor.

Preferably, the controller comprises a driving module and a chip control module; the chip control module, the driving module and the driving part are sequentially connected; the sensor is connected with the chip control module, and the chip control module is used for controlling the driving module to drive the driving part.

Preferably, the controller further comprises a supervision module, and the supervision module is connected with the chip control module and is used for monitoring and managing the working state of the injection pump.

The utility model provides a micro-injection pump, through addding advancing mechanism, sensor and controller, when liquid medicine in a syringe is injected soon, can pass through the control controller, control the drive division and rotate, make another syringe begin the auxiliary injection, inject alone until the auxiliary syringe, finish changing the pump; in order to realize the constant medicine conveying speed of the micro-injection pump, the controller controls the rotating speed of each driving part to further control the rotating speed of each screw rod, the rotating speed of the screw rods is controlled to control the transmission speed of the transmission nuts on the screw rods, and further the propelling speed of the injectors is controlled. Compared with the prior art, the medicine can be replaced under the condition of keeping the medicine input speed unchanged.

Drawings

Fig. 1 is a schematic structural view of a micro-syringe pump according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a micro-syringe pump according to an embodiment of the present invention.

01-a syringe; 010-a main body; 011-pushing the piston; 02-screw mandrel; 03-a drive nut; 04-a driving part; 05-a supervision module; 06-chip control module; 07-a drive module; 08-sensor.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for understanding and reading the contents disclosed in the specification, and are not used for limiting the conditions that the present application can implement, so the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the technical content disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

This embodiment is written in a progressive manner.

As shown in fig. 1-2, an embodiment of the present invention provides a micro injection pump, including: at least twosyringes 01; the device comprises at least two propelling mechanisms, wherein the propelling mechanisms are used for propelling aninjector 01 and comprise ascrew rod 02, a drivingpart 04 and atransmission nut 03 arranged on thescrew rod 02, the drivingpart 04 is used for rotating thescrew rod 02, thetransmission nut 03 transmits along the direction of thescrew rod 02, and a pushing rod used for pushing theinjector 01 is arranged on thetransmission nut 03; the sensor 08 is used for sensing the injection flow rate and the injection pressure in theinjector 01 and sending flow rate and pressure signals to the controller; the controller is used for receiving the flow rate and pressure signals sent by the sensor 08 and controlling the rotating speed of the drivingpart 04.

The utility model provides a micro-injection pump, through addding advancing mechanism, sensor 08 and controller, when the liquid medicine in asyringe 01 is injected soon, can control the controller, control thedrive division 04 and rotate, make another syringe 01 'begin the auxiliary injection, inject alone until the auxiliary syringe 01', accomplish and trade the pump; in order to realize the constant drug delivery speed of the micro-injection pump, the controller controls the rotating speed of each drivingpart 04 and further controls the rotating speed of eachscrew rod 02, controls the driving speed of thetransmission nut 03 on thescrew rod 02 and further controls the propelling speed of theinjector 01 by controlling the rotating speed of thescrew rod 02, meanwhile, a sensor 08 used for sensing the injection pressure and the injection flow rate of eachinjector 01 is arranged in eachinjector 01, when the pump is changed, the controller controls the speed of one drivingpart 04 to gradually decrease, the speed of the other drivingpart 04 to gradually increase, the sensor 08 feeds pressure and flow rate signals in eachinjector 01 back to the controller in real time, the controller controls the rotating speed of each drivingpart 04 in real time according to the injection pressure and the injection flow rate in eachinjector 01 fed back by the sensor 08 in real time, and realizes the constant flow rate hydraulic pressure of the injection pump, realize the automatic pump change. Compared with the prior art, the medicine can be replaced under the condition of keeping the medicine input speed unchanged.

The embodiment of the utility model provides an in,syringe 01 is preferred 2-4, advancing mechanism is corresponding withsyringe 01, whensyringe 01 is two, advancing mechanism corresponding withsyringe 01 is also two, each advancing mechanism connects alone respectively ondifferent syringe 01, when the liquid medicine is injected soon in an injection pump, another begins supplementary injection, and drivedivision 04 speed reduces gradually on one side, and drivedivision 04 speed rises gradually on one side, lets velocity of flow hydraulic pressure unchangeable, realizes the automatic pump that trades.

In the embodiment of the present invention, theinjector 01 comprises amain body 010 pushing thepiston 011 and being provided with an injection port, the pushingpiston 011 can move in themain body 010 and push the liquid medicine to be output from the injection port, and the pushingpiston 011 is connected with thedriving nut 03 through the pushing rod. Promotepiston 011 and be connected withdrive nut 03,drive nut 03 is along the transmission oflead screw 02, promotespiston 011, and the promotion that promotespiston 011 makes the liquid medicine in thesyringe 01 flow out from the injection port ofmain part 010, realizes the transport of liquid medicine, and simple structure and control effect are better.

The embodiment of the utility model provides an in, drivedivision 04 specifically is step motor, and step motor drives effectually, andcontrol lead screw 02 pivoted effect is better.

In the embodiment of the present invention, the micro-injection pump further comprises an injection tube, the injection tube comprises an injection main tube and at least two injection branch tubes, one end of each injection branch tube is connected to the injection port of theinjector 01, and the other end of each injection branch tube is communicated with the injection main tube. Through the connected mode of injection branch pipe and injection main pipe, realize that the liquid medicine homoenergetic of eachsyringe 01 is inputed to the human body through the injection main pipe, simple structure simultaneously, easily installation and change.

The embodiment of the utility model provides an in, sensor 08 includes flow sensor 08 and hydraulic sensor 08, and flow sensor 08 is used for detecting the injection liquid medicine velocity of flow in thesyringe 01, and hydraulic sensor 08 is used for detecting the injection liquid medicine pressure in thesyringe 01, and detection effect is good, and the testing result is more accurate, and the error is littleer.

In the embodiment of the present invention, the controller includes adriving module 07 and achip control module 06; thechip control module 06, thedriving module 07 and thedriving part 04 are connected in sequence; the sensor 08 is connected to thechip control module 06, and thechip control module 06 is configured to control thedriving module 07 to drive thedriving portion 04. In the scheme, adriving module 07 is used for controlling the rotation of a drivingpart 04, a standard value is preset on achip control module 06 to determine the flow rate and pressure of liquid medicine of a micro injection pump, a sensor 08 detects the actual flow rate and pressure of the micro injection pump, when the medicine in oneinjector 01 is injected soon, the injection amount of theinjector 01 is reduced, in order to ensure that the medicine injected by the injection pump keeps stable flow rate and pressure, when the injection flow rate and pressure of theinjector 01 being injected, which are detected by the sensor 08, are smaller than the preset range of thechip control module 06, thechip control module 06 controls thedriving module 07, thedriving module 07 controls thedriving part 04 to rotate, so that the speed of the drivingpart 04 corresponding to theinjector 01 being injected is gradually reduced, the speed of thedriving part 04 corresponding to theother injector 01 is gradually increased, and the injection flow rate and pressure of the micro injection pump are ensured to be kept within the preset range, realize the automatic pump change.

In this embodiment, thedriving unit 04 is preferably a stepping motor, and thedriving module 07 is specifically a stepping motor driving module.

The embodiment of the utility model provides an in, the controller still includessupervision module 05, andsupervision module 05 is connected withchip control module 06 for the operating condition of control and management syringe pump. The working state of the injection pump is monitored and managed in real time, and full-automatic treatment can be realized after operation.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

Translated fromChinese

1.一种微量注射泵，其特征在于，包括：1. a micro-injection pump, is characterized in that, comprises:至少两个注射器；at least two syringes;至少两个推进机构，所述推进机构用于推进所述注射器，所述推进机构包括丝杆、驱动部及设置于所述丝杆上的传动螺母，所述驱动部用于转动所述丝杆，所述传动螺母沿所述丝杆方向传动，所述传动螺母上设有用于推动所述注射器的推动杆；At least two propulsion mechanisms, the propulsion mechanisms are used to propel the syringe, the propulsion mechanisms include a screw rod, a driving part and a transmission nut arranged on the screw rod, and the driving part is used to rotate the screw rod , the transmission nut is driven along the direction of the screw rod, and the transmission nut is provided with a push rod for pushing the syringe;传感器和控制器，所述传感器用于感应所述注射器内的注射流速及注射压力并发送流速与压力信号至所述控制器；所述控制器用于接收所述传感器发送的流速与压力信号并控制所述驱动部的转速。A sensor and a controller, the sensor is used to sense the injection flow rate and injection pressure in the syringe and send flow rate and pressure signals to the controller; the controller is used to receive the flow rate and pressure signals sent by the sensor and control the rotational speed of the drive unit.2.根据权利要求1所述的微量注射泵，其特征在于，所述注射器包括推动活塞及设置有注射口的主体，所述推动活塞与所述推动杆连接。2 . The microinjection pump according to claim 1 , wherein the syringe comprises a push piston and a main body provided with an injection port, and the push piston is connected with the push rod. 3 .3.根据权利要求1所述的微量注射泵，其特征在于，所述驱动部具体为步进电机。3 . The micro-injection pump according to claim 1 , wherein the driving part is a stepping motor. 4 .4.根据权利要求1所述的微量注射泵，其特征在于，所述微量注射泵还包括注射管，所述注射管包括注射主管及至少两个注射支管，所述注射支管一端分别与所述注射器的注射口连接，另一端与所述注射主管连通。4 . The micro-injection pump according to claim 1 , wherein the micro-injection pump further comprises an injection pipe, the injection pipe comprises an injection main pipe and at least two injection branch pipes, one end of the injection branch pipe is respectively connected to the The injection port of the syringe is connected, and the other end is communicated with the injection main pipe.5.根据权利要求1所述的微量注射泵，其特征在于，所述传感器具体为流速传感器及液压传感器。5 . The micro syringe pump according to claim 1 , wherein the sensors are specifically a flow rate sensor and a hydraulic pressure sensor. 6 .6.根据权利要求1所述的微量注射泵，其特征在于，所述控制器包括驱动模块及芯片控制模块；所述芯片控制模块、所述驱动模块、所述驱动部依次连接；所述传感器与所述芯片控制模块连接，所述芯片控制模块用于控制驱动模块驱动所述驱动部。6 . The micro syringe pump according to claim 1 , wherein the controller comprises a driving module and a chip control module; the chip control module, the driving module and the driving part are connected in sequence; the sensor is connected with the chip control module, and the chip control module is used for controlling the driving module to drive the driving part.7.根据权利要求6所述的微量注射泵，其特征在于，所述控制器还包括监管模块，所述监管模块与所述芯片控制模块连接，用于监控和管理注射泵的工作状态。7 . The micro syringe pump according to claim 6 , wherein the controller further comprises a supervision module, the supervision module is connected with the chip control module, and is used for monitoring and managing the working state of the syringe pump. 8 .

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