WO2010009648A1 - Medical injection pump - Google Patents

Medical injection pump Download PDF

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Publication number
WO2010009648A1
WO2010009648A1 PCT/CN2009/072616 CN2009072616W WO2010009648A1 WO 2010009648 A1 WO2010009648 A1 WO 2010009648A1 CN 2009072616 W CN2009072616 W CN 2009072616W WO 2010009648 A1 WO2010009648 A1 WO 2010009648A1
Authority
WO
WIPO (PCT)
Prior art keywords
medical syringe
syringe pump
actuator
controller
pump according
Prior art date
Application number
PCT/CN2009/072616
Other languages
French (fr)
Chinese (zh)
Inventor
罗七一
王勤
曾志海
刘宇程
杨平中
Original Assignee
微创医疗器械(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 微创医疗器械(上海)有限公司 filed Critical 微创医疗器械(上海)有限公司
Publication of WO2010009648A1 publication Critical patent/WO2010009648A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142Pressure infusion, e.g. using pumps
    • A61M5/14244Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/50General characteristics of the apparatus with microprocessors or computers

Definitions

  • the present invention relates to a micropump, and more particularly to a medical syringe pump. Background technique
  • Existing medical syringe pumps include syringe pumps such as insulin pumps and analgesic pumps.
  • Insulin pumps are the best way to treat diabetes, but because existing insulin pumps are expensive, most people with diabetes have not yet had the opportunity to receive this advanced treatment for effective treatment.
  • FIG 1 is an exploded view of the composition of an existing insulin pump.
  • the existing insulin pump is driven by the motor 101 through the shifting device 102 to drive the screw 105 to rotate, and the silk core 106 is moved in the axial direction to push the piston 104 of the syringe 103 to output the liquid medicine to the infusion device matched with the syringe.
  • a display 107 and a keyboard 108 are also disposed on the conventional insulin pump housing 109.
  • the power section of the conventional insulin pump uses an escapement mechanism in addition to the motor 101.
  • FIG 2 is a structural view of an infusion set used in an existing insulin pump.
  • the infusion set used in existing insulin pumps generally consists of a joint 111, a line 112 and an indwelling needle 113, which is connected to the syringe 103 of the pump, and the indwelling needle 113 is inserted under the skin of the human body.
  • Some infusion set lines 112 are broken into two sections, and the intermediate unit is splitter 114. The function of the splitter is to disconnect the pump and the indwelling needle for use in places such as bathing.
  • the liquid medicine in the syringe 103 is sent to the human skin through the infusion tube line 112 through the indwelling needle 113.
  • the present invention provides a medical injection pump, the medical injection pump
  • the utility model comprises a controller, an actuator, a pump core and a medicine cartridge for storing the liquid medicine connected to the pump core input passage, and an indwelling needle communicating with the output passage of the pump core;
  • the actuator controls the pump core to inject the medical solution through the indwelling needle according to an injection command sent by the controller.
  • the executor is further configured to receive a clock collation command sent by the controller.
  • the unit communicates.
  • the medical syringe pump includes a display unit coupled to the controller.
  • the controller receives the injection command via an input device coupled to the controller.
  • the input device is specifically a keyboard or a touch screen or a computer.
  • the medical syringe pump further includes a fault detecting unit connected to the actuator for detecting the working condition of the actuator, and feeding back the result to the controller through the wireless communication unit.
  • the pump core is specifically a piezoelectric ceramic pump core.
  • the medical syringe pump further includes a pressure sensor coupled to the actuator for sensing the pressure at the indwelling needle.
  • the medical syringe pump further includes a storage unit connected to the actuator and the pressure sensor for storing a preset pressure/flow comparison table.
  • the actuator calculates the control amount based on the pressure/flow comparison table of the pressure value measured by the current pressure sensor.
  • the storage unit stores an accumulated working time of the pump core and the indwelling needle.
  • the medical syringe pump further comprises a high pressure distributor connected to the actuator, the high pressure distributor is connected to the high voltage generator, receives the high voltage signal of the high voltage generator, and is converted into the pump core. AC signal.
  • the high voltage generator is connected to the high voltage distributor via a step-up transformer and a rectifier.
  • the high voltage distributor specifically comprises four triodes.
  • the medical syringe pump further includes an external memory connected to the actuator for recording information of the actuator.
  • the controller and the actuator are implemented by using a chip or a single chip microcomputer.
  • the medical syringe pump further includes an alarm connected to the controller.
  • the medical syringe pump further includes a current/voltage detecting circuit coupled to the actuator.
  • the medical injection pump is an insulin pump or an analgesic pump.
  • the medical syringe pump of the embodiment of the invention includes a controller, an actuator, a pump core and a cartridge, and an indwelling needle in communication with the pump core.
  • the controller is capable of receiving an instruction of a user, and converting the instruction to the actuator; the actuator controls the movement of the pump core according to the converted instruction of the controller, thereby causing the The drug solution in the drug cartridge reaches the indwelling needle through the pump core to achieve injection.
  • the controller can easily and accurately control the injection action of the actuator through the controller.
  • the catheter is not required, and the actuator can be applied to the skin surface for the convenience of the patient.
  • Figure 1 is an exploded view of the composition of the existing insulin pump
  • Figure 2 is a structural view of an infusion set used in an existing insulin pump
  • Figure 3 is a working relationship diagram of the first embodiment of the medical syringe pump of the present invention.
  • Figure 4 is a pressure/flow control curve of the piezoelectric ceramic pump of the present invention.
  • Figure 5 is a schematic diagram of a first embodiment of the actuator of the present invention.
  • Figure 6 is a circuit diagram of a first embodiment of the controller of the present invention.
  • Figure 7 is a structural diagram of a first embodiment of the controller of the present invention.
  • Figure 8 is an exploded view of the structure of the controller shown in Figure 7;
  • FIG. 9 is a block diagram of a controller circuit according to an embodiment of the present invention.
  • Figure 10 is an outline view of an actuator according to an embodiment of the present invention.
  • Figure 11 is a structural exploded view of the actuator of the embodiment of the present invention
  • Figure 12 is a block diagram of an actuator circuit in accordance with an embodiment of the present invention. detailed description
  • the invention provides a medical injection pump for facilitating the use of a patient.
  • the medical injection pump according to the first embodiment of the present invention includes a controller 1, an actuator 2, a pump core 3, and a medicine cartridge 4 for storing a liquid medicine in communication with an input passage of the pump core 3, and the pump core
  • the indwelling needle 5 of the output passage of 3 is connected.
  • the medicine cartridge 4, the pump core 3 and the indwelling needle 5 can be made in one piece to constitute a disposable consumable.
  • the user can replace the disposable consumables as a whole. This can better ensure the accuracy of the interaction between the cartridge 4, the pump core 3 and the indwelling needle 5.
  • the controller 1 receives an injection command and converts the instruction into an injection command recognized by the actuator 2 to the actuator 2.
  • FIG. 7 is a structural view of a first embodiment of the controller of the present invention.
  • FIG. 8 is an exploded view of the structure of the controller shown in FIG.
  • the controller 1 may include a keyboard mask 310, an upper casing 311, a display 312, a circuit board 313, a lower casing 314, a battery 316, and a battery cover 315.
  • the controller 1 implements a corresponding control input via the keyboard 301.
  • the insulin pump requires a human-machine dialogue
  • the human-machine dialogue device requires a large display and keyboard. If it is mounted on an actuator attached to the patient's skin, the actuator is bulky and inconvenient for the patient to operate. Therefore, the above problem can be solved by setting the human-machine dialog device on the controller.
  • FIG. 10 is an outline view of an actuator according to an embodiment of the present invention
  • FIG. 11 is an exploded view of the structure of the actuator according to the embodiment of the present invention.
  • the actuator 2 of the embodiment of the present invention may include a protective cover 411, an upper casing 412, a lower casing 415, a bracket 414, a circuit board 413, and a first battery 419.
  • Ben The actuator 2 of the embodiment of the invention may further comprise a disposable consumable consisting of a medicine cartridge 4, a pump core 3, an indwelling needle 5, and a sensor circuit 418.
  • the disposable consumable can be replaced and can be secured within the bracket 414 by insertion and screwing.
  • the indwelling needle 5 of the embodiment of the present invention is directly mounted on the pump core, and the pump core 3 is applied to the skin of the patient.
  • Conventional insulin pumps are difficult to meet the requirements of applying a pump to human skin, both in terms of volume and weight.
  • the actuator 2 of the embodiment of the present invention changes the syringe to the medicine 4, reducing the volume by half.
  • the function of the motor, reducer and lead screw in the existing syringe pump is realized by the pump core 3, which can reduce the volume and weight by more than 80%.
  • the pump core 3 can be specifically a piezoelectric ceramic pump core.
  • the human-machine dialog device is implemented by a second display 312 and a second keyboard 301 installed on the controller 1.
  • the controller 1 realizes the control of the actuator 2 by means of remote control, so that the volume of the actuator applied to the human body is not affected by the human-machine dialogue device.
  • the medical syringe pump of the present invention has a volume and weight reduction of 2/3, which can meet the requirements of application to human skin.
  • the actuator 2 controls the pump core 3 to inject the liquid medicine through the indwelling needle 5 in accordance with an injection command sent from the controller 1.
  • the drug solution 4 can be made of a soft material such as medical high polymer, which needs to ensure good sealing effect and corrosion resistance.
  • the liquid medicine in the medicine cartridge 4 can be transported to the input channel of the pump core 3 under the action of the pump core 3, and transmitted to the output channel through the pump core 3, and then passed through the indwelling communication with the output passage of the pump core 3. Needle 5 is injected into the patient.
  • the pump core 3 includes an actuating device that performs a corresponding operation according to the actuator 2, and a drug storage cavity formed between the actuating device and the pump body, and is connected to the drug storage cavity.
  • An input check valve is arranged in the input channel, and an output check valve is arranged in the output channel.
  • the medicine cartridge 4 is in communication with the input passage of the pump core 3, and the indwelling needle 5 is in communication with the pump core output passage.
  • the actuating device of the pump core 3 is controlled to open according to the injection command sent by the actuator 2
  • the check valve is input, and the output check valve is closed, so that the liquid medicine in the medicine cartridge 4 is input to the drug storage chamber in the pump core 3.
  • the control input shut-off valve is closed, and the output check valve is opened, so that the liquid medicine in the drug storage chamber is injected into the patient through the output check valve 5 through the indwelling needle 5.
  • the actuating device can be realized in particular by a piezoelectric ceramic sheet.
  • the pump body is provided with a mounting groove for mounting the piezoelectric ceramic piece.
  • the pump core 3 can be designed in a cylindrical shape
  • the medicine cartridge 4 can be designed in the shape of a ring having an inner diameter slightly larger than the outer diameter of the pump core 3.
  • the indwelling needle 5 can be kept inserted into the patient's body for a long period of time.
  • the injection of the liquid medicine it is only necessary to send an injection command to the actuator 2 through the controller 1, and then the injection command is converted by the actuator 2 into an injection signal that the pump core 3 can recognize, thereby controlling the pump core 3.
  • the actuation device performs a corresponding operation to effect injection of the indwelling needle 5 to the patient.
  • the controller 1 receives the user's instruction and converts the command into a command that the actuator 2 can recognize and sends it to the actuator 2.
  • the actuator 2 converts the command sent by the controller 1 into an injection signal that the pump core 3 can recognize, and controls the pump core 3 to perform the corresponding action.
  • the indwelling needle 5 injects the medical solution to the user by the corresponding action of the pump core 3.
  • the controller 1 of the medical syringe pump is capable of receiving a user's instruction, and transforms the command to the actuator 2.
  • the actuator 2 is converted to an injection signal recognizable by the pump core 3 according to the command converted by the controller 1, and controls the action of the pump core 3.
  • the injectable solution of the indwelling needle 5 is controlled by the action of the pump core 3.
  • the controller 1 can conveniently and accurately control the injection action of the indwelling needle 5 through the controller 1.
  • the medicine cartridge 4 is directly connected to the pump core 3, and the pump core 3 is directly connected to the indwelling needle 5, a catheter is not required, which is convenient for the patient to use.
  • the controller 1 can communicate with the wireless communication unit of the actuator through a wireless transceiver unit.
  • the controller 1 may be a signal transmitting device similar to a remote controller for triggering the actuator 2 to execute a corresponding command while receiving corresponding feedback from the actuator 2.
  • the controller 1 may display an injection instruction of the controller through a display unit connected to the controller 1.
  • the display unit may specifically be a display screen embedded in the surface of the controller 1, and the control interface of the controller 1 is displayed through the display screen.
  • the controller 1 can receive an instruction of the user through an input device connected to the controller 1, and specifically can be an injection instruction, a calibration clock instruction, a setting of a liquid concentration command, setting an infusion curve instruction, and temporarily closing the input. Note instructions, display history commands, etc.
  • the injection command specifically refers to an instruction sent by the controller 1 to the actuator 2 to control the injection of the indwelling needle 5.
  • Actuator 2 needs to control the indwelling needle 5 injection according to the specific time interval sent by controller 1. Therefore, the clock accuracy of actuator 2 is important.
  • the controller 1 needs to transmit a calibration clock command for adjusting the clock of the actuator 2 to the actuator 2.
  • the controller 1 can send a setting liquid medicine concentration command for setting the concentration of the drug solution in the medicine cartridge 5 to the actuator 2.
  • the user and the medical syringe pump can set the infusion curve and the basic volume infusion curve, and the infusion curve command can also be sent to the actuator 2 through the controller 1.
  • Actuator 2 will perform a 24-hour base infusion in accordance with the basal volume infusion curve.
  • the controller 1 can send a temporary closing infusion command to the actuator 2.
  • the controller 1 can send a display history instruction to the actuator 2.
  • the input device may be a keyboard or stylus designed integrally with the controller 1, or may be a well-known input device (including a computer) externally connected to the controller 1.
  • the input device can input the control command in the form of a touch screen.
  • the display function of the display unit can also be implemented through a touch screen.
  • the medical syringe pump may further include a fault detecting unit connected to the actuator 2 for detecting the working condition of the actuator 2, and Returning the result to the wireless communication unit The wireless transceiver unit of the controller 1.
  • the fault detecting unit simultaneously monitors the software working state and the communication state of the controller 1 and the actuator 2, and finds that the fault is reported to the user in time.
  • the fault detecting unit may be configured to detect a process of the actuator 2 in receiving the controller 1 injection command, converting the injection command to a signal recognizable by the pump core 3, and transmitting the signal to the pump core 3 The working condition of the process, and can feedback the result of the test to the controller 1 in time.
  • the medical syringe pump further includes a pressure sensor connected to the actuator 2 for sensing the pressure at the indwelling needle 5.
  • the medical syringe pump can also include a storage unit coupled to the actuator and the pressure sensor for storing a calibrated pressure/flow meter.
  • the pressure sensor is for transmitting the sensed indwelling needle 5 outlet pressure to the actuator 2 through a pressure value converted into an electrical signal by a lead connected to the actuator 2.
  • the actuator corrects the work command to the actuator based on the calibrated pressure/flow table to achieve a more accurate output.
  • the pressure sensor can sense that the indwelling needle 5 is clogged and the indwelling needle 5 is disengaged. When the crystallization of the drug occludes, the output pressure increases and the pressure sensor will report a blockage; when the output pressure disappears, the pressure sensor will report the needle detachment.
  • FIG. 4 there is shown a pressure/flow control curve for a piezoelectric ceramic pump of the present invention. Since the pressure/flow contrast curve of the piezoceramic pump is non-linear, the voltage or length of time required for the action of the piezoceramic is different under different pressures to ensure the required flow rate. Therefore, the use of a pressure/flow comparison table in a piezoceramic pump ensures accurate flow.
  • the pre-set pressure/flow comparison table of the present invention was measured experimentally.
  • each medical injection pump core needs to perform a pressure/flow test at the time of production, and the pressure/flow rate as shown in FIG. 4 is measured and drawn. Compare the curve and store the comparison table in the memory placed with the sensor. This is the calibration of the pump heart.
  • the specific flow command is issued by the controller 1, and the actuator 2 obtains a specific correction according to the pressure/flow comparison table described above and then performs the corresponding operation.
  • the medical syringe pump is used to store a memory of a preset pressure value, and may also be responsible for storing a threshold value of the accumulated working time of the pump core 3 and the operating time of the pump core 3.
  • the actuator 2 may reject the injection command sent by the controller 1, or may be performed by an alarm connected to the controller 1. An alarm to prompt the user to replace the new disposable consumable.
  • FIG. 12 is a block diagram of an actuator circuit according to an embodiment of the present invention.
  • the control core of the actuator 2 in the embodiment of the present invention is a first CPU, and the first CPU can control the start and stop of the high voltage generator and the voltage level, and can also control the working frequency and duty ratio of the high voltage distributor.
  • the high voltage distributor converts the DC high voltage into an AC high voltage output to the piezoelectric ceramic electrodes.
  • the first CPU communicates with the controller 1 via the wireless communication unit, accepts instructions and returns a work report.
  • the sensor and the memory are mounted on the pump core of the disposable consumable.
  • the sensor detects the pump output pressure.
  • the pressure and flow curves of the pump core are calibrated before leaving the factory.
  • the pressure and flow correspondence are stored in the same circuit as the sensor. On the board's memory.
  • the first CPU determines the voltage of the high voltage generator according to the output pressure, and controls the frequency and duration of the high voltage distributor to ensure the accuracy of the output flow.
  • the sensor can also be responsible for alarming when the needle is blocked and when the needle is detached from the body. While the battery is providing power, the first CPU can also detect the battery level.
  • FIG. 5 there is shown a schematic diagram of a first embodiment of the actuator of the present invention.
  • the medical syringe pump further includes a high pressure distributor connected to the actuator, high pressure
  • the high voltage generated by the generator is converted into a unidirectional pulsating direct current or bidirectional alternating current required by the actuator by the high pressure distributor to drive the actuating device of the pump core 3.
  • the actuator 2 uses the chip U1 or the single chip microcomputer to realize the intelligent control of the infusion and the detection of the working process.
  • the wireless communication unit can be implemented by the chip U4, and the chip U4 is used to communicate with the controller 1.
  • ADO is used for power supply detection.
  • the high voltage generator is implemented by U3 and its associated circuits.
  • the high voltage generator adopts a switching power supply U3 and is equipped with a step-up transformer L1 and a rectifier D1.
  • the high voltage distributor includes four transistors - Q2, Q3, Q4, Q5, which provide the required bidirectional voltage to an actuator such as a piezoceramic. Since there is no ready-made integrated circuit, this part uses three transistors Q2, Q3, Q4, Q5 to build a triode bridge. Its control is controlled by the actuator U1 through the diodes D2, D3 and through the transistors Ql, Q6 to control the on/off of the triode bridge diagonally.
  • the op amp U2 is used to amplify the signal from the pressure sensor in the pump section.
  • the medical syringe pump may further include a current/voltage detecting circuit connected to the actuator 2 for detecting the voltage and current conditions of the high voltage generator and the high voltage distributor.
  • FIG. 9 there is shown a block diagram of a controller circuit in accordance with an embodiment of the present invention.
  • the second keyboard communicates the operator's instructions to the second CPU.
  • the second CPU can display information to the operator through the second display.
  • the second CPU communicates with the actuator 2 through the wireless transceiver unit when needed; it can also communicate with the computer via the wireless transceiver unit when needed.
  • the second CPU can initiate an alarm alarm when needed.
  • the second battery is used to supply power, and the second CPU can also monitor the power of the second battery. Referring to Figure 6, the figure is a circuit diagram of a first embodiment of the controller of the present invention.
  • the controller 1 is implemented by a chip U1 or a single chip microcomputer.
  • the chip U1 is a control core, and the storage unit is implemented by the chip U2 for storing control data and various records.
  • the input device connected to the controller 1 can realize the man-machine dialogue through the keyboard interface J2 external button.
  • the display unit can be connected to the display through the display interface J1 to display various operations. Interface. U3 is used to power the display to solve its special needs for power.
  • the wireless transceiver unit of the controller 1 can be composed of U4 and its external circuits for communication with the actuator 1.
  • the P6.0 signal is a power supply voltage detection circuit for power display.
  • the alarm connected to the controller can be an LSI buzzer alarm circuit for alerting the user if necessary.
  • the medical syringe pump of the embodiment of the invention can be used for the use of an insulin pump or an analgesic pump.

Abstract

A medical injection pump comprises a controller (1), an executer (2), a pump core (3) and an medicine reservoir (4) communicated with the input channel of the pump core (3) for storing a liquid medicine, as well as an indwelling needle (5) communicated with the output channel of the pump core (3). The executer (2) controls the pump core (3) to inject the liquid medicine via the indwelling needle (5) according injection orders sent by the controller (1).

Description

一种医用注射泵 技术领域  Medical syringe pump
本发明涉及微型泵, 特别涉及一种医用注射泵。 背景技术  The present invention relates to a micropump, and more particularly to a medical syringe pump. Background technique
现有的医用注射泵, 包括胰岛素泵和镇痛泵等注射泵。  Existing medical syringe pumps include syringe pumps such as insulin pumps and analgesic pumps.
胰岛素泵是现有治疗糖尿病的最好方式, 但由于现有的胰岛素泵 售价昂贵, 大多数糖尿病患者目前还没有机会接受这种先进治疗方法 进行有效的治疗。  Insulin pumps are the best way to treat diabetes, but because existing insulin pumps are expensive, most people with diabetes have not yet had the opportunity to receive this advanced treatment for effective treatment.
图 1为现有胰岛素泵的组成爆炸图。 现有胰岛素泵由电机 101经 过变速装置 102带动丝杆 105转动, 通过丝干丝母配合使丝母 106沿 轴向运动来推动注射器 103的活塞 104将药液输出到与注射器配合的 输注器中。 传统胰岛素泵壳体 109上还设置显示器 107和键盘 108。 传统胰岛素泵的动力部分除使用电机 101外, 还有使用擒纵机构的。  Figure 1 is an exploded view of the composition of an existing insulin pump. The existing insulin pump is driven by the motor 101 through the shifting device 102 to drive the screw 105 to rotate, and the silk core 106 is moved in the axial direction to push the piston 104 of the syringe 103 to output the liquid medicine to the infusion device matched with the syringe. in. A display 107 and a keyboard 108 are also disposed on the conventional insulin pump housing 109. The power section of the conventional insulin pump uses an escapement mechanism in addition to the motor 101.
图 2为现有胰岛素泵使用的输注器结构图。 现有胰岛素泵使用的 输注器一般由接头 111、 管路 112和留置针 113组成, 接头 111连接 到泵的注射器 103上,留置针 113插入人体皮下。有的输注器管路 112 断成两截, 中间装置分合器 114。 分合器的作用是将泵和留置针断开, 用于如洗澡等场合。  Figure 2 is a structural view of an infusion set used in an existing insulin pump. The infusion set used in existing insulin pumps generally consists of a joint 111, a line 112 and an indwelling needle 113, which is connected to the syringe 103 of the pump, and the indwelling needle 113 is inserted under the skin of the human body. Some infusion set lines 112 are broken into two sections, and the intermediate unit is splitter 114. The function of the splitter is to disconnect the pump and the indwelling needle for use in places such as bathing.
传统胰岛素泵动作时会将注射器 103 中的药液通过输注器管路 112经留置针 113送入人体皮下。  When the conventional insulin pump is activated, the liquid medicine in the syringe 103 is sent to the human skin through the infusion tube line 112 through the indwelling needle 113.
由于导管的存在, 给糖尿病人在使用过程中带来很多不便。  Due to the presence of the catheter, it is inconvenient for the diabetic to use.
因此, 如何提供一种方便病人使用的医用注射泵, 是本领域技术 人员需要解决的技术问题。 发明内容  Therefore, how to provide a medical syringe pump that is convenient for a patient is a technical problem that a person skilled in the art needs to solve. Summary of the invention
本发明的目的是提供一种医用注射泵, 用于方便病人使用。  It is an object of the present invention to provide a medical syringe pump for use in patient convenience.
为解决上述问题, 本发明提供一种医用注射泵, 所述医用注射泵 包括控制器、 执行器、 泵芯和与泵芯输入通道相连通的用于储存药液 的药嚢, 以及与所述泵芯的输出通道相连通的留置针; In order to solve the above problems, the present invention provides a medical injection pump, the medical injection pump The utility model comprises a controller, an actuator, a pump core and a medicine cartridge for storing the liquid medicine connected to the pump core input passage, and an indwelling needle communicating with the output passage of the pump core;
所述执行器根据所述控制器发送的注射命令, 控制所述泵芯通过 所述留置针注射所述药液。  The actuator controls the pump core to inject the medical solution through the indwelling needle according to an injection command sent by the controller.
优选地, 所述执行器还用于接收所述控制器发送的时钟校对命 令。 单元相通信。  Preferably, the executor is further configured to receive a clock collation command sent by the controller. The unit communicates.
优选地, 所述医用注射泵包括与所述控制器相连的显示单元。 优选地, 所述控制器通过与所述控制器相连的输入装置接收所述 注射命令。  Preferably, the medical syringe pump includes a display unit coupled to the controller. Preferably, the controller receives the injection command via an input device coupled to the controller.
优选地, 所述输入装置具体为键盘或者触摸屏或者是计算机。 优选地, 所述医用注射泵还包括与所述执行器相连的故障检测单 元, 用于检测所述执行器工作状况, 并将结果通过所述无线通讯单元 反馈给所述控制器。  Preferably, the input device is specifically a keyboard or a touch screen or a computer. Preferably, the medical syringe pump further includes a fault detecting unit connected to the actuator for detecting the working condition of the actuator, and feeding back the result to the controller through the wireless communication unit.
优选地, 所述泵芯具体为压电陶瓷泵芯。  Preferably, the pump core is specifically a piezoelectric ceramic pump core.
优选地, 所述医用注射泵还包括与所述执行器相连的用于感应使 用所述留置针处压力的压力传感器。  Preferably, the medical syringe pump further includes a pressure sensor coupled to the actuator for sensing the pressure at the indwelling needle.
优选地, 所述医用注射泵还包括与所述执行器和所述压力传感器 相连的用于存储预设压力 /流量对照表的存储单元。  Preferably, the medical syringe pump further includes a storage unit connected to the actuator and the pressure sensor for storing a preset pressure/flow comparison table.
优选地,执行器根据当前压力传感器所测压力值查所述压力 /流量 对照表计算控制量。  Preferably, the actuator calculates the control amount based on the pressure/flow comparison table of the pressure value measured by the current pressure sensor.
优选地, 所述存储单元存储所述泵芯和所述留置针的累加工作时 间。  Preferably, the storage unit stores an accumulated working time of the pump core and the indwelling needle.
优选地, 所述医用注射泵还包括与所述执行器相连的高压分配 器, 所述高压分配器与高压发生器相连, 接收所述高压发生器高压信 号, 转换为所述泵芯所需要的交流信号。  Preferably, the medical syringe pump further comprises a high pressure distributor connected to the actuator, the high pressure distributor is connected to the high voltage generator, receives the high voltage signal of the high voltage generator, and is converted into the pump core. AC signal.
优选地, 所述高压发生器经升压变压器和整流器与所述高压分配 器相连。 优选地, 所述高压分配器具体包括四个三极管。 Preferably, the high voltage generator is connected to the high voltage distributor via a step-up transformer and a rectifier. Preferably, the high voltage distributor specifically comprises four triodes.
优选地, 所述医用注射泵还包括与所述执行器相连的外部存储 器, 用于记录所述执行器的信息。  Preferably, the medical syringe pump further includes an external memory connected to the actuator for recording information of the actuator.
优选地, 所述控制器和所述执行器均采用芯片或者单片机实现。 优选地, 所述医用注射泵还包括与所述控制器相连的报警器。 优选地,所述医用注射泵还包括与所述执行器相连的电流 /电压检 测电路。  Preferably, the controller and the actuator are implemented by using a chip or a single chip microcomputer. Preferably, the medical syringe pump further includes an alarm connected to the controller. Preferably, the medical syringe pump further includes a current/voltage detecting circuit coupled to the actuator.
优选地, 所述医用注射泵为胰岛素泵或者镇痛泵。  Preferably, the medical injection pump is an insulin pump or an analgesic pump.
与上述现有技术相比, 本发明实施例所述医用注射泵包括控制 器、 执行器、 泵芯和药嚢, 以及与泵芯相连通的留置针。 所述控制器 能够接收用户的指令, 并将所述指令进行变换后发送至所述执行器; 所述执行器根据所述控制器变换后的指令, 控制所述泵芯动作, 从而 使所述药嚢内的药液通过泵芯到达留置针, 实现注射。 用户可通过控 制器方便、 准确地控制执行器的注射动作。 并且由于药嚢通过泵芯与 留置针直接相连通, 不需要使用导管, 执行器可以贴敷于皮表, 方便 病人的使用。 附图说明  In contrast to the prior art described above, the medical syringe pump of the embodiment of the invention includes a controller, an actuator, a pump core and a cartridge, and an indwelling needle in communication with the pump core. The controller is capable of receiving an instruction of a user, and converting the instruction to the actuator; the actuator controls the movement of the pump core according to the converted instruction of the controller, thereby causing the The drug solution in the drug cartridge reaches the indwelling needle through the pump core to achieve injection. The controller can easily and accurately control the injection action of the actuator through the controller. And because the medicine is directly connected to the indwelling needle through the pump core, the catheter is not required, and the actuator can be applied to the skin surface for the convenience of the patient. DRAWINGS
图 1是现有胰岛素泵的组成爆炸图;  Figure 1 is an exploded view of the composition of the existing insulin pump;
图 2是现有胰岛素泵使用的输注器结构图;  Figure 2 is a structural view of an infusion set used in an existing insulin pump;
图 3是本发明所述医用注射泵第一实施例工作关系图;  Figure 3 is a working relationship diagram of the first embodiment of the medical syringe pump of the present invention;
图 4是本发明压电陶瓷泵的压力 /流量对照曲线;  Figure 4 is a pressure/flow control curve of the piezoelectric ceramic pump of the present invention;
图 5是本发明所述执行器第一实施例原理图;  Figure 5 is a schematic diagram of a first embodiment of the actuator of the present invention;
图 6是本发明所述控制器第一实施例电路图;  Figure 6 is a circuit diagram of a first embodiment of the controller of the present invention;
图 7是本发明所述控制器第一实施例结构图;  Figure 7 is a structural diagram of a first embodiment of the controller of the present invention;
图 8是图 7所示控制器的结构爆炸图;  Figure 8 is an exploded view of the structure of the controller shown in Figure 7;
图 9 是本发明实施例所述控制器电路方框图;  9 is a block diagram of a controller circuit according to an embodiment of the present invention;
图 10 是本发明实施例所述执行器的外形图;  Figure 10 is an outline view of an actuator according to an embodiment of the present invention;
图 11 是本发明实施例所述执行器的结构爆炸图; 图 12 是本发明实施例所述执行器电路方框图。 具体实施方式 Figure 11 is a structural exploded view of the actuator of the embodiment of the present invention; Figure 12 is a block diagram of an actuator circuit in accordance with an embodiment of the present invention. detailed description
本发明提供一种医用注射泵, 用于方便病人使用。  The invention provides a medical injection pump for facilitating the use of a patient.
为了使本技术领域的技术人员更好地理解本发明方案, 下面结合 附图和具体实施方式对本发明作进一步的详细说明。  The present invention will be further described in detail below in conjunction with the drawings and embodiments.
参见图 3 ,该图为本发明所述医用注射泵第一实施例工作关系图。 本发明第一实施例所述医用注射泵, 包括控制器 1、 执行器 2、 泵芯 3和与泵芯 3输入通道相连通的用于储存药液的药嚢 4, 以及与 所述泵芯 3的输出通道相连通的留置针 5。  Referring to Fig. 3, there is shown a working relationship diagram of a first embodiment of a medical syringe pump according to the present invention. The medical injection pump according to the first embodiment of the present invention includes a controller 1, an actuator 2, a pump core 3, and a medicine cartridge 4 for storing a liquid medicine in communication with an input passage of the pump core 3, and the pump core The indwelling needle 5 of the output passage of 3 is connected.
其中药嚢 4, 泵芯 3和留置针 5可以制作为一个整体, 构成一次 性耗材。 当药嚢 4中的药液用完或者泵芯 3达到预设的上限使用次数 时, 用户可以整体更换所述一次性耗材。这样可以更好地保证药嚢 4, 泵芯 3和留置针 5之间的相互配合精度。  The medicine cartridge 4, the pump core 3 and the indwelling needle 5 can be made in one piece to constitute a disposable consumable. When the liquid medicine in the medicine cartridge 4 is used up or the pump core 3 reaches the preset upper limit usage number, the user can replace the disposable consumables as a whole. This can better ensure the accuracy of the interaction between the cartridge 4, the pump core 3 and the indwelling needle 5.
所述控制器 1接收注射指令, 并将所述指令变换为所述执行器 2 识别的注射命令发送至所述执行器 2。  The controller 1 receives an injection command and converts the instruction into an injection command recognized by the actuator 2 to the actuator 2.
参见图 7和图 8 , 图 7是本发明所述控制器第一实施例结构图; 图 8是图 7所示控制器的结构爆炸图。  7 and FIG. 8, FIG. 7 is a structural view of a first embodiment of the controller of the present invention; and FIG. 8 is an exploded view of the structure of the controller shown in FIG.
本发明第一实施例所述控制器 1可以包括键盘面膜 310、 上壳体 311、 显示器 312、 电路板 313、 下壳体 314、 电池 316、 电池盖 315。  The controller 1 according to the first embodiment of the present invention may include a keyboard mask 310, an upper casing 311, a display 312, a circuit board 313, a lower casing 314, a battery 316, and a battery cover 315.
控制器 1通过键盘 301实现相应的控制输入。  The controller 1 implements a corresponding control input via the keyboard 301.
胰岛素泵需要进行人机对话, 而人机对话装置需要较大的显示器 和键盘,如果装在贴敷于患者皮表的执行器上,使得执行器体积很大, 并且不方便患者操作。 因此将人机对话装置设置于控制器上即可解决 上述问题。  The insulin pump requires a human-machine dialogue, and the human-machine dialogue device requires a large display and keyboard. If it is mounted on an actuator attached to the patient's skin, the actuator is bulky and inconvenient for the patient to operate. Therefore, the above problem can be solved by setting the human-machine dialog device on the controller.
参见图 10和图 11 , 图 10是本发明实施例所述执行器的外形图; 图 11 是本发明实施例所述执行器的结构爆炸图。  10 and FIG. 11, FIG. 10 is an outline view of an actuator according to an embodiment of the present invention; and FIG. 11 is an exploded view of the structure of the actuator according to the embodiment of the present invention.
本发明实施例所述执行器 2可以包括保护罩 411、 上机壳 412、 下机壳 415、 支架 414、 电路板 413、 第一电池 419组成不变部分。 本 发明实施例所述执行器 2还可以包括由药嚢 4、 泵芯 3、 留置针 5、 传 感器电路 418组成的一次性耗材。 The actuator 2 of the embodiment of the present invention may include a protective cover 411, an upper casing 412, a lower casing 415, a bracket 414, a circuit board 413, and a first battery 419. Ben The actuator 2 of the embodiment of the invention may further comprise a disposable consumable consisting of a medicine cartridge 4, a pump core 3, an indwelling needle 5, and a sensor circuit 418.
所述一次性耗材可以更换, 可以通过插入并旋紧固定于支架 414 内。  The disposable consumable can be replaced and can be secured within the bracket 414 by insertion and screwing.
本发明实施例所述留置针 5直接安装在泵芯上, 把泵芯 3贴敷在 患者的皮肤上。传统胰岛素泵无论在体积上和重量上都很难满足将泵 贴敷在人体皮肤上的要求。  The indwelling needle 5 of the embodiment of the present invention is directly mounted on the pump core, and the pump core 3 is applied to the skin of the patient. Conventional insulin pumps are difficult to meet the requirements of applying a pump to human skin, both in terms of volume and weight.
本发明实施例所述执行器 2, 将注射器改变为药嚢 4, 减小了一 半体积。 将现有注射泵中电机、 减速器和丝杆丝母实现的功能通过泵 芯 3实现, 可以减小 80%以上体积和重量。 泵芯 3具体可以采用压电 陶瓷泵芯。  The actuator 2 of the embodiment of the present invention changes the syringe to the medicine 4, reducing the volume by half. The function of the motor, reducer and lead screw in the existing syringe pump is realized by the pump core 3, which can reduce the volume and weight by more than 80%. The pump core 3 can be specifically a piezoelectric ceramic pump core.
人机对话装置通过安装在控制器 1上的第二显示器 312和第二键 盘 301设置实现。 控制器 1采用遥控的方式实现对执行器 2的控制, 使贴敷到人体的执行器体积不会受到人机对话装置的影响。 本发明所 述医用注射泵与现有胰岛素泵相比, 体积和重量都减小了 2/3 , 可以 满足贴敷于人体皮肤的要求。  The human-machine dialog device is implemented by a second display 312 and a second keyboard 301 installed on the controller 1. The controller 1 realizes the control of the actuator 2 by means of remote control, so that the volume of the actuator applied to the human body is not affected by the human-machine dialogue device. Compared with the existing insulin pump, the medical syringe pump of the present invention has a volume and weight reduction of 2/3, which can meet the requirements of application to human skin.
所述执行器 2根据所述控制器 1发送的注射命令, 控制所述泵芯 3通过所述留置针 5注射所述药液。  The actuator 2 controls the pump core 3 to inject the liquid medicine through the indwelling needle 5 in accordance with an injection command sent from the controller 1.
所述药嚢 4可以采用医用高聚合物等软性材料制成, 所述药嚢 4 需要保证良好的密封效果和防腐蚀性。  The drug solution 4 can be made of a soft material such as medical high polymer, which needs to ensure good sealing effect and corrosion resistance.
所述药嚢 4中的药液可以在泵芯 3的作用下, 向泵芯 3的输入通 道输送药液, 经泵芯 3向输出通道传送, 再通过与泵芯 3输出通道相 连通的留置针 5向病人进行注射。  The liquid medicine in the medicine cartridge 4 can be transported to the input channel of the pump core 3 under the action of the pump core 3, and transmitted to the output channel through the pump core 3, and then passed through the indwelling communication with the output passage of the pump core 3. Needle 5 is injected into the patient.
所述泵芯 3 包括根据所述执行器 2命令执行相应操作的致动装 置、 与所述致动装置与泵体之间形成的可变空间的储药腔体, 与储药 腔体相连的输入通道和输出通道。 在所述输入通道内设置输入单向 阀, 在输出通道内设置输出单向阀。 所述药嚢 4与泵芯 3输入通道相 连通, 留置针 5与泵芯输出通道相连通。  The pump core 3 includes an actuating device that performs a corresponding operation according to the actuator 2, and a drug storage cavity formed between the actuating device and the pump body, and is connected to the drug storage cavity. Input channel and output channel. An input check valve is arranged in the input channel, and an output check valve is arranged in the output channel. The medicine cartridge 4 is in communication with the input passage of the pump core 3, and the indwelling needle 5 is in communication with the pump core output passage.
所述泵芯 3的致动装置根据执行器 2发送的注射命令, 控制打开 输入单向阀, 关闭输出单向阀, 使得药嚢 4中的药液输入到泵芯 3内 的储药腔体。 然后控制关闭输入单向阀, 打开输出单向阀, 使得储药 腔体内的药液经输出单向阀通过留置针 5注射到患者体内。 The actuating device of the pump core 3 is controlled to open according to the injection command sent by the actuator 2 The check valve is input, and the output check valve is closed, so that the liquid medicine in the medicine cartridge 4 is input to the drug storage chamber in the pump core 3. Then, the control input shut-off valve is closed, and the output check valve is opened, so that the liquid medicine in the drug storage chamber is injected into the patient through the output check valve 5 through the indwelling needle 5.
所述致动装置具体可以采用压电陶瓷片实现。 所述泵上体开设有 用于安装所述压电陶瓷片的安装槽。  The actuating device can be realized in particular by a piezoelectric ceramic sheet. The pump body is provided with a mounting groove for mounting the piezoelectric ceramic piece.
为了节省空间, 所述泵芯 3可以设计为圆柱形, 药嚢 4可以设计 为内径尺寸略大于泵芯 3外径的圆环形状。  In order to save space, the pump core 3 can be designed in a cylindrical shape, and the medicine cartridge 4 can be designed in the shape of a ring having an inner diameter slightly larger than the outer diameter of the pump core 3.
当本发明第一实施例所述医用注射泵用于注射胰岛素和镇痛剂 时, 所述留置针 5可以长时间保持插入病人体内状态。 当需要进行药 液注射的时候, 只需要通过控制器 1向执行器 2发送注射命令, 再通 过执行器 2将所述注射命令转换为泵芯 3可以识别的注射信号, 从而 控制泵芯 3的致动装置执行相应的操作,实现留置针 5向病人的注射。  When the medical syringe pump according to the first embodiment of the present invention is used for injecting insulin and an analgesic, the indwelling needle 5 can be kept inserted into the patient's body for a long period of time. When the injection of the liquid medicine is required, it is only necessary to send an injection command to the actuator 2 through the controller 1, and then the injection command is converted by the actuator 2 into an injection signal that the pump core 3 can recognize, thereby controlling the pump core 3. The actuation device performs a corresponding operation to effect injection of the indwelling needle 5 to the patient.
本发明第一实施例所述医用注射泵的工作过程:  The working process of the medical syringe pump according to the first embodiment of the present invention:
控制器 1接收用户的指令, 并将所述指令变换为执行器 2能够识 别的命令, 发送至执行器 2。  The controller 1 receives the user's instruction and converts the command into a command that the actuator 2 can recognize and sends it to the actuator 2.
执行器 2将控制器 1发送的命令转换为泵芯 3可以识别的注射信 号, 控制泵芯 3执行相应动作。  The actuator 2 converts the command sent by the controller 1 into an injection signal that the pump core 3 can recognize, and controls the pump core 3 to perform the corresponding action.
通过泵芯 3的相应动作, 使得留置针 5向使用者注射药液。  The indwelling needle 5 injects the medical solution to the user by the corresponding action of the pump core 3.
本发明第一实施例所述医用注射泵的控制器 1能够接收用户的指 令, 并将所述指令进行变换后发送至执行器 2。 执行器 2根据控制器 1变换后的命令, 转换为泵芯 3可以识别的注射信号, 控制泵芯 3的 动作。 通过泵芯 3的动作控制留置针 5的注射药液。 用户可通过控制 器 1方便、 准确地控制留置针 5的注射动作。 并且由于药嚢 4与泵芯 3直接连通, 而且泵芯 3与留置针 5直接相连通, 不需要使用导管, 方便病人的使用。  The controller 1 of the medical syringe pump according to the first embodiment of the present invention is capable of receiving a user's instruction, and transforms the command to the actuator 2. The actuator 2 is converted to an injection signal recognizable by the pump core 3 according to the command converted by the controller 1, and controls the action of the pump core 3. The injectable solution of the indwelling needle 5 is controlled by the action of the pump core 3. The controller 1 can conveniently and accurately control the injection action of the indwelling needle 5 through the controller 1. Moreover, since the medicine cartridge 4 is directly connected to the pump core 3, and the pump core 3 is directly connected to the indwelling needle 5, a catheter is not required, which is convenient for the patient to use.
为了方便病人的使用, 所述控制器 1可以通过无线收发单元与所 述执行器的无线通讯单元相通信。 所述控制器 1可以是一个类似于遥 控器的信号发射装置, 用于触发所述执行器 2执行相应命令, 同时可 以接收执行器 2的相应反馈。 为了方便用户的控制, 所述控制器 1可以通过与所述控制器 1相 连的显示单元, 显示所述控制器的注射指令。 In order to facilitate the use of the patient, the controller 1 can communicate with the wireless communication unit of the actuator through a wireless transceiver unit. The controller 1 may be a signal transmitting device similar to a remote controller for triggering the actuator 2 to execute a corresponding command while receiving corresponding feedback from the actuator 2. In order to facilitate the user's control, the controller 1 may display an injection instruction of the controller through a display unit connected to the controller 1.
所述显示单元具体可以是镶嵌在所述控制器 1表面的显示屏, 通 过显示屏显示控制器 1的控制界面。  The display unit may specifically be a display screen embedded in the surface of the controller 1, and the control interface of the controller 1 is displayed through the display screen.
当然, 所述控制器 1可以通过与所述控制器 1相连的输入装置接 收用户的指令, 具体可以是注射指令、 调校时钟指令、 设置药液浓度 指令、设置输注曲线指令、 临时关闭输注指令、显示历史记录指令等。  Certainly, the controller 1 can receive an instruction of the user through an input device connected to the controller 1, and specifically can be an injection instruction, a calibration clock instruction, a setting of a liquid concentration command, setting an infusion curve instruction, and temporarily closing the input. Note instructions, display history commands, etc.
注射指令具体是指控制器 1向执行器 2发送的控制留置针 5注射 的指令。  The injection command specifically refers to an instruction sent by the controller 1 to the actuator 2 to control the injection of the indwelling needle 5.
执行器 2需要根据控制器 1发送的具体时间间隔要求控制留置针 5注射。 因此, 执行器 2的时钟准确性就很重要。  Actuator 2 needs to control the indwelling needle 5 injection according to the specific time interval sent by controller 1. Therefore, the clock accuracy of actuator 2 is important.
当执行器 2的时钟出现偏差时, 控制器 1需要向执行器 2发送用 于调整执行器 2的时钟的调校时钟指令。  When the clock of the actuator 2 is deviated, the controller 1 needs to transmit a calibration clock command for adjusting the clock of the actuator 2 to the actuator 2.
由于药液的浓度直接影响到病人的治疗情况, 因此控制器 1可以 向执行器 2发送用于设置药嚢 5中药液浓度的设置药液浓度指令。  Since the concentration of the drug solution directly affects the treatment of the patient, the controller 1 can send a setting liquid medicine concentration command for setting the concentration of the drug solution in the medicine cartridge 5 to the actuator 2.
用户和医用注射泵可以设置输注曲线和基础量输注曲线, 所述输 注曲线指令也可以通过控制器 1向执行器 2发送。执行器 2将按照所 述基础量输注曲线进行 24小时的基础量的输注。  The user and the medical syringe pump can set the infusion curve and the basic volume infusion curve, and the infusion curve command can also be sent to the actuator 2 through the controller 1. Actuator 2 will perform a 24-hour base infusion in accordance with the basal volume infusion curve.
当用户想在某个时刻停止注射时, 控制器 1可以向执行器 2发送 临时关闭输注指令。  When the user wants to stop the injection at a certain time, the controller 1 can send a temporary closing infusion command to the actuator 2.
当用户想查询执行器 2的历史数据时, 控制器 1可以向执行器 2 发送显示历史记录指令。  When the user wants to query the history data of the actuator 2, the controller 1 can send a display history instruction to the actuator 2.
输入装置可以是与控制器 1一体设计的键盘或者输入笔, 也可以 是外接于控制器 1的公知输入设备(包括电脑)。  The input device may be a keyboard or stylus designed integrally with the controller 1, or may be a well-known input device (including a computer) externally connected to the controller 1.
输入装置可以采用触摸屏的形式进行控制指令的输入。 当输入装 置采用触摸屏时, 所述显示单元的显示功能也可以通过触摸屏实现。  The input device can input the control command in the form of a touch screen. When the input device adopts a touch screen, the display function of the display unit can also be implemented through a touch screen.
为了保证使用者在使用本发明实施例所述医用注射泵的安全, 所 述医用注射泵还可以包括与所述执行器 2相连的故障检测单元, 用于 检测所述执行器 2工作状况, 并将结果通过所述无线通讯单元反馈给 所述控制器 1的无线收发单元。 该故障检测单元同时监视控制器 1和 执行器 2的软件工作状态及通信状态, 发现故障将及时报告给用户。 In order to ensure the safety of the medical syringe pump according to the embodiment of the present invention, the medical syringe pump may further include a fault detecting unit connected to the actuator 2 for detecting the working condition of the actuator 2, and Returning the result to the wireless communication unit The wireless transceiver unit of the controller 1. The fault detecting unit simultaneously monitors the software working state and the communication state of the controller 1 and the actuator 2, and finds that the fault is reported to the user in time.
所述故障检测单元可以用于检测执行器 2在接收控制器 1注射命 令过程、 转换所述注射命令为所述泵芯 3能够识别的信号的过程, 以 及发送所述信号至所述泵芯 3的过程的工作状况, 并能够将检测的结 果及时反馈给控制器 1。  The fault detecting unit may be configured to detect a process of the actuator 2 in receiving the controller 1 injection command, converting the injection command to a signal recognizable by the pump core 3, and transmitting the signal to the pump core 3 The working condition of the process, and can feedback the result of the test to the controller 1 in time.
为了更加准确地控制本发明实施例所述医用注射泵的注射, 所述 医用注射泵还包括与所述执行器 2相连的用于感应使用所述留置针 5 处压力的压力传感器。  In order to more accurately control the injection of the medical syringe pump of the embodiment of the present invention, the medical syringe pump further includes a pressure sensor connected to the actuator 2 for sensing the pressure at the indwelling needle 5.
所述医用注射泵还可以包括与所述执行器和所述压力传感器相 连的用于存储标定的压力 /流量对照表的存储单元。  The medical syringe pump can also include a storage unit coupled to the actuator and the pressure sensor for storing a calibrated pressure/flow meter.
所述压力传感器用于将感应到的留置针 5出口压力通过与所述执 行器 2相连的引线转换为电信号的压力值传输到所述执行器 2中。执 行器根据标定的压力 /流量对照表来修正对致动器的工作命令以达到 更准确的输出结果。  The pressure sensor is for transmitting the sensed indwelling needle 5 outlet pressure to the actuator 2 through a pressure value converted into an electrical signal by a lead connected to the actuator 2. The actuator corrects the work command to the actuator based on the calibrated pressure/flow table to achieve a more accurate output.
压力传感器可以感应到留置针 5阻塞和留置针 5脱离的情况。 当 药物结晶发生阻塞时输出压力增大, 压力传感器将报告阻塞; 当输出 压力消失时压力传感器将报告针头脱离。  The pressure sensor can sense that the indwelling needle 5 is clogged and the indwelling needle 5 is disengaged. When the crystallization of the drug occludes, the output pressure increases and the pressure sensor will report a blockage; when the output pressure disappears, the pressure sensor will report the needle detachment.
参见图 4, 该图为本发明压电陶瓷泵的压力 /流量对照曲线。 由于 压电陶瓷泵的压力 /流量对照曲线是非线性的, 为了保证要求的流量, 在不同的压力下, 压电陶瓷动作所需要的电压或时间长度是不一样 的。 因此在压电陶瓷泵中使用压力 /流量对照表可以保证流量的准确。 本发明预先设定的压力 /流量对照表是根据实验测得的。  Referring to Figure 4, there is shown a pressure/flow control curve for a piezoelectric ceramic pump of the present invention. Since the pressure/flow contrast curve of the piezoceramic pump is non-linear, the voltage or length of time required for the action of the piezoceramic is different under different pressures to ensure the required flow rate. Therefore, the use of a pressure/flow comparison table in a piezoceramic pump ensures accurate flow. The pre-set pressure/flow comparison table of the present invention was measured experimentally.
为了保证本发明实施例所述每个医用注射泵注射的准确性, 在生 产的时候每个医用注射泵芯都需要进行压力 /流量试验,测量并绘制得 出如图 4所示的压力 /流量对照曲线,并把这对照表存放到和传感器放 置在一起的存储器中, 这就是对泵心的标定。  In order to ensure the accuracy of injection of each medical syringe pump according to the embodiment of the present invention, each medical injection pump core needs to perform a pressure/flow test at the time of production, and the pressure/flow rate as shown in FIG. 4 is measured and drawn. Compare the curve and store the comparison table in the memory placed with the sensor. This is the calibration of the pump heart.
由于所述压力 /流量对照表是每个泵芯在出厂前都要分别标定的, 这样就消除了泵芯的非线性影响; 消除了例如压电陶瓷片的分散性的 影响; 消除了压力传感器的分散性的影响。 Since the pressure/flow comparison table is separately calibrated before leaving the factory, this eliminates the nonlinear effects of the pump core; eliminating the dispersion of, for example, piezoelectric ceramic sheets. Impact; Eliminates the effects of dispersion of the pressure sensor.
由控制器 1发出具体流量指令,执行器 2根据上述的压力 /流量对 照表得到具体的修正然后执行相应的操作。  The specific flow command is issued by the controller 1, and the actuator 2 obtains a specific correction according to the pressure/flow comparison table described above and then performs the corresponding operation.
为了保证所述医用注射泵的使用效果, 避免由于泵芯 3的过长时 间使用而造成较大的误差。 所述医用注射泵用于存储预设压力值的存 储器, 还可以负责存储所述泵芯 3的累加工作时间和泵芯 3工作时间 的阈值。  In order to ensure the use effect of the medical syringe pump, a large error due to the excessive use of the pump core 3 is avoided. The medical syringe pump is used to store a memory of a preset pressure value, and may also be responsible for storing a threshold value of the accumulated working time of the pump core 3 and the operating time of the pump core 3.
当所述泵芯 3的累加工作时间大于或者等于泵芯 3工作时间的阈 值时, 所述执行器 2可以拒绝控制器 1发送的注射命令, 或者通过与 所述控制器 1相连的报警器进行报警, 以提示用户更换新的一次性耗 材。  When the accumulated working time of the pump core 3 is greater than or equal to the threshold value of the working time of the pump core 3, the actuator 2 may reject the injection command sent by the controller 1, or may be performed by an alarm connected to the controller 1. An alarm to prompt the user to replace the new disposable consumable.
参见图 12 是本发明实施例所述执行器电路方框图。  12 is a block diagram of an actuator circuit according to an embodiment of the present invention.
本发明实施例所述执行器 2的控制核心是第一 CPU, 第一 CPU 可以控制高压发生器的启停和电压高低, 也可以控制高压分配器的工 作频率和占空比。  The control core of the actuator 2 in the embodiment of the present invention is a first CPU, and the first CPU can control the start and stop of the high voltage generator and the voltage level, and can also control the working frequency and duty ratio of the high voltage distributor.
高压分配器将直流高压转换成交流高压输出到压电陶瓷两电极 上。  The high voltage distributor converts the DC high voltage into an AC high voltage output to the piezoelectric ceramic electrodes.
第一 CPU通过无线通讯单元与控制器 1通信, 接受指令和返回 工作报告。  The first CPU communicates with the controller 1 via the wireless communication unit, accepts instructions and returns a work report.
传感器和存储器是装置在一次性耗材的泵芯上, 由传感器检测泵 输出压力, 泵芯在出厂前其压力和流量曲线是被标定的, 该压力和流 量对应关系保存在和传感器在同一片电路板的存储器上。  The sensor and the memory are mounted on the pump core of the disposable consumable. The sensor detects the pump output pressure. The pressure and flow curves of the pump core are calibrated before leaving the factory. The pressure and flow correspondence are stored in the same circuit as the sensor. On the board's memory.
在正常压力范围内第一 CPU会根据输出压力来决定控制高压发 生器电压高低, 控制高压分配器的频率和时长, 以保证输出流量的精 度。  In the normal pressure range, the first CPU determines the voltage of the high voltage generator according to the output pressure, and controls the frequency and duration of the high voltage distributor to ensure the accuracy of the output flow.
传感器还可以负责在针头阻塞时及针头脱离人体时的报警工作。 电池提供电力同时, 第一 CPU也可检测电池电量大小。  The sensor can also be responsible for alarming when the needle is blocked and when the needle is detached from the body. While the battery is providing power, the first CPU can also detect the battery level.
参见图 5, 该图为本发明所述执行器第一实施例原理图。  Referring to Figure 5, there is shown a schematic diagram of a first embodiment of the actuator of the present invention.
所述医用注射泵还包括与所述执行器相连的高压分配器, 高压发 生器产生的高电压, 经高压分配器变为所述执行器所需要的单方向的 脉动直流或者双方向的交流电来驱动泵芯 3的致动装置。 The medical syringe pump further includes a high pressure distributor connected to the actuator, high pressure The high voltage generated by the generator is converted into a unidirectional pulsating direct current or bidirectional alternating current required by the actuator by the high pressure distributor to drive the actuating device of the pump core 3.
所述执行器 2采用芯片 U1或者单片机实现智能控制药液的输注、 工作过程的检测。  The actuator 2 uses the chip U1 or the single chip microcomputer to realize the intelligent control of the infusion and the detection of the working process.
无线通讯单元可以通过芯片 U4 实现, 芯片 U4用于和控制器 1 相通信。  The wireless communication unit can be implemented by the chip U4, and the chip U4 is used to communicate with the controller 1.
ADO 用于电源电量检测。  ADO is used for power supply detection.
高压发生器通过 U3及其附属电路实现。 高压发生器具体采用开 关电源 U3 , 并配有升压变压器 L1 , 整流器 Dl。  The high voltage generator is implemented by U3 and its associated circuits. The high voltage generator adopts a switching power supply U3 and is equipped with a step-up transformer L1 and a rectifier D1.
高压分配器包括四个三极管—— Q2、 Q3、 Q4、 Q5, 对致动装置 例如压电陶瓷片提供所需双向电压。 由于没有现成集成电路, 此部分 用四个三极管 Q2、 Q3、 Q4、 Q5搭建三极管桥。 其控制由执行器 U1 通过二极管 D2、 D3再经三极管 Ql、 Q6实现对角控制所述三极管桥 的通断。  The high voltage distributor includes four transistors - Q2, Q3, Q4, Q5, which provide the required bidirectional voltage to an actuator such as a piezoceramic. Since there is no ready-made integrated circuit, this part uses three transistors Q2, Q3, Q4, Q5 to build a triode bridge. Its control is controlled by the actuator U1 through the diodes D2, D3 and through the transistors Ql, Q6 to control the on/off of the triode bridge diagonally.
运放 U2 用于放大泵芯部分的压力传感器的信号。  The op amp U2 is used to amplify the signal from the pressure sensor in the pump section.
所述医用注射泵还可以包括与所述执行器 2 相连的电流 /电压检 测电路, 用于检测高压发生器、 高压分配器的电压和电流情况。  The medical syringe pump may further include a current/voltage detecting circuit connected to the actuator 2 for detecting the voltage and current conditions of the high voltage generator and the high voltage distributor.
参见图 9 , 该图是本发明实施例控制器电路方框图。  Referring to Figure 9, there is shown a block diagram of a controller circuit in accordance with an embodiment of the present invention.
第二键盘传达操作者的指令到第二 CPU。 第二 CPU可以通过第 二显示器向操作者显示信息。 在需要时第二 CPU通过无线收发单元 与执行器 2进行通信; 在需要时也可以通过无线收发单元与计算机进 行通信。 在需要时第二 CPU可以启动报警器报警。 第二电池用于提 供电能, 第二 CPU也可以监视第二电池的电量情况。 参见图 6, 该图 为本发明所述控制器第一实施例电路图。  The second keyboard communicates the operator's instructions to the second CPU. The second CPU can display information to the operator through the second display. The second CPU communicates with the actuator 2 through the wireless transceiver unit when needed; it can also communicate with the computer via the wireless transceiver unit when needed. The second CPU can initiate an alarm alarm when needed. The second battery is used to supply power, and the second CPU can also monitor the power of the second battery. Referring to Figure 6, the figure is a circuit diagram of a first embodiment of the controller of the present invention.
所述控制器 1采用芯片 U1或者单片机实现, 芯片 U1是控制核 心, 存储单元由芯片 U2实现, 用于储存控制数据和各种记录。  The controller 1 is implemented by a chip U1 or a single chip microcomputer. The chip U1 is a control core, and the storage unit is implemented by the chip U2 for storing control data and various records.
与所述控制器 1相连的输入装置可以通过键盘接口 J2外接按键 实现人机对话。  The input device connected to the controller 1 can realize the man-machine dialogue through the keyboard interface J2 external button.
显示单元可以通过显示器接口 J1 连接显示器, 实现显示各种操 作界面。 其中 U3用于对显示器供电, 解决其对电源的特殊需求。 所述控制器 1的无线收发单元可以由 U4及其外部电路组成, 用 于和执行器 1的通信。 The display unit can be connected to the display through the display interface J1 to display various operations. Interface. U3 is used to power the display to solve its special needs for power. The wireless transceiver unit of the controller 1 can be composed of U4 and its external circuits for communication with the actuator 1.
P6.0信号为电源电压检测电路, 用于电量显示。  The P6.0 signal is a power supply voltage detection circuit for power display.
与所述控制器相连的报警器可以是 LSI蜂鸣器报警电路,用于必 要时提醒用户注意。  The alarm connected to the controller can be an LSI buzzer alarm circuit for alerting the user if necessary.
本发明实施例所述医用注射泵可以用于胰岛素泵或者镇痛泵的 使用。  The medical syringe pump of the embodiment of the invention can be used for the use of an insulin pump or an analgesic pump.
以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领 域的普通技术人员来说, 在不脱离本发明原理的前提下, 还可以做出 若干改进和润饰, 这些改进和润饰也应视为本发明的保护范围。  The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

权 利 要 求 书 Claim
1、 一种医用注射泵, 其特征在于, 所述医用注射泵包括控制器、 执行器、 泵芯和与泵芯输入通道相连通的用于储存药液的药嚢, 以及 与所述泵芯的输出通道相连通的留置针; What is claimed is: 1. A medical syringe pump, comprising: a controller, an actuator, a pump core, and a medicine cartridge for storing a liquid medicine connected to the input passage of the pump core, and the pump core An indwelling needle connected to the output channel;
所述执行器根据所述控制器发送的注射命令, 控制所述泵芯通过 所述留置针注射所述药液。  The actuator controls the pump core to inject the medical solution through the indwelling needle according to an injection command sent by the controller.
2、 根据权利要求 1 所述医用注射泵, 其特征在于, 所述执行器 还用于接收所述控制器发送的时钟校对命令。  2. The medical syringe pump according to claim 1, wherein the actuator is further configured to receive a clock collation command sent by the controller.
3、 根据权利要求 1或 2所述医用注射泵, 其特征在于, 所述控 制器通过无线收发单元与所述执行器的无线通讯单元相通信。  The medical syringe pump according to claim 1 or 2, wherein the controller communicates with the wireless communication unit of the actuator through a wireless transceiver unit.
4、 根据权利要求 2 所述的医用注射泵, 其特征在于, 所述医用 注射泵包括与所述控制器相连的显示单元。  A medical syringe pump according to claim 2, wherein said medical syringe pump comprises a display unit connected to said controller.
5、 根据权利要求 2 所述的医用注射泵, 其特征在于, 所述控制 器通过与所述控制器相连的输入装置接收所述注射命令。  The medical syringe pump according to claim 2, wherein the controller receives the injection command through an input device connected to the controller.
6、 根据权利要求 5 所述的医用注射泵, 其特征在于, 所述输入 装置具体为键盘或者触摸屏或者是计算机。  The medical syringe pump according to claim 5, wherein the input device is specifically a keyboard or a touch screen or a computer.
7、 根据权利要求 3 所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述执行器相连的故障检测单元, 用于检测所述执行  7. The medical syringe pump according to claim 3, wherein the medical syringe pump further comprises a fault detecting unit connected to the actuator for detecting the execution
8、 根据权利要求 1 所述的医用注射泵, 其特征在于, 所述泵芯 具体为压电陶瓷泵芯。 The medical syringe pump according to claim 1, wherein the pump core is specifically a piezoelectric ceramic pump core.
9、 根据权利要求 1 所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述执行器相连的用于感应使用所述留置针处压力 的压力传感器。  A medical syringe pump according to claim 1, wherein said medical syringe pump further comprises a pressure sensor connected to said actuator for sensing the pressure at said indwelling needle.
10、 根据权利要求 9所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述执行器和所述压力传感器相连的用于存储预设 压力 /流量对照表的存储单元。  The medical syringe pump according to claim 9, wherein the medical syringe pump further comprises a storage unit connected to the actuator and the pressure sensor for storing a preset pressure/flow ratio table.
11、 根据权利要求 10 所述的医用注射泵, 其特征在于, 执行器 根据当前压力传感器所测压力值查所述压力 /流量对照表计算控制量。11. The medical syringe pump according to claim 10, wherein the actuator The control pressure is calculated by checking the pressure/flow comparison table according to the pressure value measured by the current pressure sensor.
12、 根据权利要求 10 所述的医用注射泵, 其特征在于, 所述存 储单元存储所述泵芯和所述留置针的累加工作时间。 The medical syringe pump according to claim 10, wherein the storage unit stores an accumulated working time of the pump core and the indwelling needle.
13、 根据权利要求 1所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述执行器相连的高压分配器, 所述高压分配器与高 压发生器相连, 接收所述高压发生器高压信号, 转换为所述泵芯所需 要的交流信号。  13. The medical syringe pump according to claim 1, wherein the medical syringe pump further comprises a high pressure distributor connected to the actuator, the high pressure distributor being connected to the high voltage generator to receive the high voltage The generator high voltage signal is converted to the AC signal required by the pump core.
14、 根据权利要求 13 所述的医用注射泵, 其特征在于, 所述高 压发生器经升压变压器和整流器与所述高压分配器相连。  A medical syringe pump according to claim 13, wherein said high pressure generator is connected to said high pressure distributor via a step-up transformer and a rectifier.
15、 根据权利要求 14 所述的医用注射泵, 其特征在于, 所述高 压分配器具体包括四个三极管。  The medical syringe pump according to claim 14, wherein the high pressure distributor specifically comprises four triodes.
16、 根据权利要求 1所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述执行器相连的外部存储器, 用于记录所述执行器 的信息。  The medical syringe pump according to claim 1, wherein said medical syringe pump further comprises an external memory connected to said actuator for recording information of said actuator.
17、 根据权利要求 1所述的医用注射泵, 其特征在于, 所述控制 器和所述执行器均采用芯片或者单片机实现。  The medical syringe pump according to claim 1, wherein the controller and the actuator are both implemented by a chip or a single chip microcomputer.
18、 根据权利要求 1所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述控制器相连的报警器。  18. The medical syringe pump of claim 1, wherein the medical syringe pump further comprises an alarm coupled to the controller.
19、 根据权利要求 1所述的医用注射泵, 其特征在于, 所述医用 注射泵还包括与所述执行器相连的电流 /电压检测电路。  The medical syringe pump according to claim 1, wherein said medical syringe pump further comprises a current/voltage detecting circuit connected to said actuator.
20、 根据权利要求 1至 19任一所述的医用注射泵, 其特征在于, 所述医用注射泵为胰岛素泵或者镇痛泵。  The medical syringe pump according to any one of claims 1 to 19, wherein the medical syringe pump is an insulin pump or an analgesic pump.
PCT/CN2009/072616 2008-07-25 2009-07-03 Medical injection pump WO2010009648A1 (en)

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CN103599578B (en) * 2013-12-03 2015-08-05 吉林大学 A kind of handheld piezoelectric drives insulin pump
CN103736168A (en) * 2014-01-23 2014-04-23 马挺 Analgesia pump capable of recording operation information thereof
CN104436362B (en) * 2014-12-09 2018-03-13 杨利波 A kind of infusion pump
CN110141509A (en) * 2019-06-10 2019-08-20 舒海华 A kind of easing pain of electron delivery methods and system
CN113244481B (en) * 2021-05-25 2022-07-05 吉林大学 Split type piezoelectricity driven intelligent insulin pastes

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