技术领域technical field
本发明属于医疗器械技术领域，涉及一种双心室体外循环调控医疗器械,特别涉及一种与多用途双心室体外循环辅助搏动式血泵相配套使用的无级调控装置。The invention belongs to the technical field of medical devices, and relates to a medical device for regulating and controlling biventricular extracorporeal circulation, in particular to a stepless regulating device used in conjunction with a multipurpose biventricular extracorporeal circulation assisted pulsatile blood pump.
背景技术Background technique
利用自体肺氧合作用的双心室体外循环转流模式，可减少因传统体外循环模式所引起的并发症的发生率，近年来，双心室体外循环转流模式已受到越来越多医务工作者和学者的重视，然而在目前，该模式实施起来仍存在以下难点。①在心脏体外循环手术中，如何保持协调一致的双心室转流；②体外循环的血流如何模拟生理循环的搏动血流从而提高氧合效果和组织灌注质量；③如何突破传统的心脏体外循环方法的限制，使心脏体外辅助循环技术能在单心室辅助循环和双心室辅助循环的多个模式之间自由平稳转换。The biventricular cardiopulmonary bypass mode using autologous lung oxygenation can reduce the incidence of complications caused by the traditional cardiopulmonary bypass mode. In recent years, the biventricular cardiopulmonary bypass mode has been favored by more and more medical workers. However, at present, there are still the following difficulties in the implementation of this model. ①In cardiopulmonary bypass surgery, how to maintain a coordinated biventricular bypass; ②How to simulate the pulsating blood flow of the physiological circulation in order to improve the oxygenation effect and tissue perfusion quality; ③How to break through the traditional cardiopulmonary bypass Due to the limitation of the method, the cardiopulmonary assisted circulation technology can freely and smoothly switch between the multiple modes of the single ventricular assisted circulation and the biventricular assisted circulation.
发明内容Contents of the invention
本发明的目的是针对现有技术中常用血泵不能在血泵不停运转，不改变血流的脉动频率情况下完成流量的定量调节和不同体外辅助循环模式平稳转换的现状，提供一种由可控步进或伺服电机驱动的双心室体外辅助循环血泵室辅助模式调控装置，主要是设计与双心室体外循环转流驱动血泵相配套使用的血泵辅助模式调控装置，该调控装置利用步进或伺服电机的精准定位能力，可配合各种传感器和电机反馈的位置信号形成调控环，从而为血泵实施多用途的智能化应用提供可靠的基础。该血泵辅助模式调控装置所采用独特的无级调节挤压幅度的技术，能在血泵运行时精确地调节挤压幅度，配合程控程序，能使血泵在不改变血流的搏动脉冲频率前提下完成流量的定量调节，并能便捷地实施左、右侧泵室的同步协调运转，可使双心室转流血流量保持一致，并可同步增减，使双心室转流协调一致的问题得到有效解决。The purpose of the present invention is to provide a blood pump in the prior art, which cannot perform the quantitative adjustment of the flow rate and the smooth conversion of different extracorporeal assisted circulation modes without changing the pulsation frequency of the blood flow without the continuous operation of the blood pump. The controllable stepping or servo motor-driven biventricular extracorporeal circulation blood pump chamber auxiliary mode control device is mainly designed to be used in conjunction with the biventricular extracorporeal circulation shunt-driven blood pump. The control device uses The precise positioning capability of stepping or servo motors can form a control loop with the position signals fed back by various sensors and motors, thus providing a reliable foundation for the multi-purpose intelligent application of blood pumps. The blood pump auxiliary mode control device adopts a unique technology of stepless adjustment of the extrusion amplitude, which can precisely adjust the extrusion amplitude when the blood pump is running. Quantitative adjustment of the flow rate can be completed under the premise, and the synchronous and coordinated operation of the left and right pump chambers can be conveniently implemented, so that the blood flow of the biventricular bypass can be kept consistent, and can be increased and decreased synchronously, so that the coordination of the biventricular bypass can be solved. Effective solution.
本发明所采用的技术方案是，一种与双心室体外辅助循环血泵室配套使用的无级调控装置，该装置包括与双心室体外辅助循环血泵室连接固定的一个挤压驱动座，所述的挤压驱动座上部设有凹槽的前侧板上并排安装两个直线步进电机，左、右两个直线步进电机的移动丝杆经挤压驱动座前侧板的穿过孔穿过，两移动丝杆前端各装有一个血泵挤压头，两移动丝杆后端经挤压驱动座后侧板的通孔穿过，两移动丝杆尾部各固定连接一圆形导向滑柱，导向滑柱置于与直线步进电机的轴中心上下偏置、且固定于后侧板上的直线移动导向套中。The technical solution adopted in the present invention is a stepless control device used in conjunction with a biventricular extracorporeal blood pump chamber, the device includes a squeeze drive seat connected and fixed to the biventricular extracorporeal blood pump chamber, the Two linear stepping motors are installed side by side on the front side plate with a groove on the upper part of the extrusion driving seat, and the moving screw rods of the left and right linear stepping motors pass through the holes in the front side plate of the extrusion driving seat. Pass through, the front ends of the two moving screw rods are equipped with a blood pump extrusion head, the rear ends of the two moving screw rods pass through the through holes on the rear side plate of the extrusion drive seat, and the tails of the two moving screw rods are fixedly connected to a circular guide Sliding column, the guiding sliding column is placed in the linear moving guide sleeve that is offset up and down with the shaft center of the linear stepper motor and fixed on the rear side plate.
本发明所述的与双心室体外辅助循环血泵室配套使用的无级调控装置，其特征还在于，The stepless control device used in conjunction with the double ventricle extracorporeal assisted circulation blood pump room according to the present invention is further characterized in that:
所述血泵挤压头前端为半球状。The front end of the extruding head of the blood pump is hemispherical.
所述直线移动导向套中导向滑柱的轴中心线与直线步进电机的移动丝杆轴中心上下偏置。The shaft centerline of the guide sliding column in the linearly moving guide sleeve is offset up and down from the shaft center of the moving screw rod of the linear stepping motor.
所述挤压驱动座前侧板上设有的两个直线步进电机移动丝杆的穿过孔为一个与半球状血泵挤压头形状相配的半球型凹孔。The through hole of the two linear stepping motor moving screw rods provided on the front side plate of the extrusion driving seat is a hemispherical concave hole matching the shape of the hemispherical blood pump extrusion head.
所述直线步进电机或为直线伺服电机。The linear stepper motor may be a linear servo motor.
本发明与双心室体外辅助循环血泵室配套使用的无级调控装置，可使血泵在不停运转情况下实施左侧单室灌注、右侧单室灌注、双室同流量灌注和双室不同流量灌注等几种模式的转换，从而协助提高了血泵的可控制程度，使血泵有利于多用途的智能化应用。The stepless control device used in conjunction with the double ventricle extracorporeal auxiliary circulation blood pump chamber of the present invention can enable the blood pump to perform left single-chamber perfusion, right single-chamber perfusion, double-chamber same-flow perfusion and double-chamber The conversion of several modes such as different flow rate perfusion helps to improve the controllability of the blood pump, making the blood pump beneficial to multi-purpose intelligent applications.
使用本发明的辅助模式调控装置配套的血泵，实施的双心室体外循环转流术，可免去使用人工氧合器，有效地减少多因传统体外循环模式所引起的术后肺功能下降等并发症的发生率。使用本发明装置配套的血泵，可使血泵在不停运转情况下转换成简便的双心室辅助装置，从而使心脏手术安全系数成倍提高。Using the blood pump matched with the auxiliary mode control device of the present invention, the biventricular cardiopulmonary bypass surgery performed can avoid the use of artificial oxygenators, and effectively reduce the postoperative pulmonary function decline caused by the traditional cardiopulmonary bypass mode, etc. incidence of complications. Using the matching blood pump of the device of the present invention, the blood pump can be converted into a simple double ventricle assisting device under the condition of non-stop operation, so that the safety factor of heart surgery is doubled.
本发明与双心室体外辅助循环血泵室配套使用的无级调控装置，与现有技术相比较，具有以下优点：Compared with the prior art, the stepless control device used in conjunction with the double ventricle extracorporeal assisted circulation blood pump room of the present invention has the following advantages:
一、本发明能调节以ml单位定量的循环搏动血流，可以适应不同的体外循环灌注要求；1. The present invention can adjust the pulsating blood flow quantified in ml units, and can adapt to different extracorporeal circulation perfusion requirements;
二、本发明独特的造型简化了调控装置构造，安装方便，定位准确，固定牢靠，可适应长时间的运转；2. The unique shape of the present invention simplifies the structure of the control device, which is convenient for installation, accurate in positioning, firm in fixation, and can be adapted to long-term operation;
三、本发明双心室体外辅助循环血泵室辅助模式调控装置，通过电机的编码器和驱动器，可实现挤压幅度的无级数码调控。3. The auxiliary mode control device of the double ventricle extracorporeal circulation blood pump chamber of the present invention can realize the stepless digital control of the extrusion amplitude through the encoder and the driver of the motor.
附图说明Description of drawings
图1、图2是本发明与双心室体外辅助循环血泵室配套使用的无级调控装置结构示意图；Fig. 1 and Fig. 2 are the schematic diagrams of the structure of the stepless regulating device used in conjunction with the biventricular extracorporeal blood pump chamber of the present invention;
图3是发明无级调控装置结构剖视图；Fig. 3 is a cross-sectional view of the structure of the inventive stepless control device;
图中，1.挤压驱动座，2.前侧板，3.直线步进电机，4.移动丝杆，5.血泵挤压头，6.后侧板，7.导向滑柱，8.直线移动导向套，9.穿过孔，10.通孔，11.循环血泵室。In the figure, 1. Extrusion drive seat, 2. Front side plate, 3. Linear stepper motor, 4. Moving screw, 5. Blood pump extrusion head, 6. Rear side plate, 7. Guide strut, 8 . Linear movement guide sleeve, 9. Through hole, 10. Through hole, 11. Circulating blood pump chamber.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
一种与双心室体外辅助循环血泵室配套使用的无级调控装置，如图1、图2和图3所示，该装置包括与双心室体外辅助循环血泵室连接固定的一个挤压驱动座1，所述的挤压驱动座1上部设有凹槽的前侧板2上并排安装两个直线步进电机3，左、右两个直线步进电机3的移动丝杆4经挤压驱动座1前侧板2的穿过孔9穿过，两移动丝杆4前端各装有一个血泵挤压头5，两移动丝杆4后端经挤压驱动座1后侧板6的通孔10穿过，两移动丝杆4尾部各固定连接一圆形导向滑柱7，导向滑柱7置于与直线步进电机3的轴中心上下偏置、且固定于后侧板6的直线移动导向套中。A stepless control device used in conjunction with a biventricular extracorporeal circulation blood pump chamber, as shown in Figure 1, Figure 2 and Figure 3, the device includes a squeeze drive connected and fixed to the biventricular extracorporeal circulation blood pump chamber Seat 1, two linear stepping motors 3 are installed side by side on the front side plate 2 with grooves on the top of the extrusion driving seat 1, and the moving screw rods 4 of the two linear stepping motors 3 on the left and right are extruded The through hole 9 of the front side plate 2 of the driving seat 1 passes through, and the front ends of the two moving screw rods 4 are each equipped with a blood pump extrusion head 5, and the rear ends of the two moving screw rods 4 are squeezed through the rear side plate 6 of the driving seat 1. The through hole 10 passes through, and the tails of the two moving screw rods 4 are each fixedly connected with a circular guide column 7. The guide column 7 is placed at the center of the shaft of the linear stepper motor 3 and is fixed on the rear side plate 6. Linear movement guide sleeve.
本发明的血泵挤压头5前端为半球状；直线移动导向套8中导向滑柱7的轴中心线与直线步进电机3的移动丝杆4轴中心上下偏置。The front end of the extruding head 5 of the blood pump of the present invention is hemispherical; the axis centerline of the guide column 7 in the linearly moving guide sleeve 8 and the axis center of the moving screw rod 4 of the linear stepping motor 3 are offset up and down.
本发明的挤压驱动座1前侧板2上设有的两个直线步进电机3移动丝杆4的穿过孔9为一个与半球状血泵挤压头5形状相配的半球型凹孔。The through hole 9 of the two linear stepper motors 3 moving the screw rod 4 provided on the front side plate 2 of the extrusion drive seat 1 of the present invention is a hemispherical concave hole matching the shape of the hemispherical blood pump extrusion head 5 .
本发明无级调控装置的工作原理如下：它通过本发明的无级调控装置在挤压驱动座1凹槽中并排安装两个直线步进电机3，以及挤压驱动座1后侧板6固定连接的直线移动导向套8中移动丝杆4轴中心偏置的导向滑柱7，通过直线步进电机3丝杆螺母和移动丝杆4相啮合，用直线移动导向套8中偏置的导向滑柱7限止丝杆相对转动，从而使移动丝杆4实现直线往复移动，让左、右两个直线步进电机3电机转动时产生的可精确定位的角位移转化为左、右两个直线步进电机3移动丝杆4前端血泵挤压头5的直线位移距离，实现对循环血泵室11挤压深度大小的调节，并且通过对直线步进电机3的控制，由此实现对循环血泵室11挤压幅度无级调控的效果。循环血泵室11挤压幅度的调控范围可从最大值到0，如果一侧挤压幅度为零，就等同于双心室体外辅助循环血泵该侧循环血泵室11停止输出流量，因此，调节控制本发明无级调控装置挤压驱动座1凹槽中并排安装的两个直线步进电机3，就可使左右两侧循环血泵室11的挤压幅度达到各自的预设值，从而可分别实现双心室体外辅助循环血泵的左侧单循环血泵室11运转、右侧单循环血泵室11运转、双室同步同流量运转、双室同步不同流量运转等多种模式的快速或缓慢而平稳的转换。The working principle of the stepless control device of the present invention is as follows: it installs two linear stepping motors 3 side by side in the groove of the extrusion drive seat 1 through the stepless control device of the present invention, and the rear side plate 6 of the extrusion drive seat 1 is fixed The guide column 7 offset by the axis center of the moving screw 4 in the connected linear moving guide sleeve 8 is engaged with the screw nut of the linear stepper motor 3 and the moving screw 4, and the offset guide slide in the guiding sleeve 8 is moved linearly. The column 7 restricts the relative rotation of the screw rod, so that the moving screw rod 4 realizes linear reciprocating movement, and the angular displacement generated by the left and right linear stepping motors 3 when the motors rotate can be converted into two left and right linear steps. The motor 3 moves the linear displacement distance of the blood pump extrusion head 5 at the front end of the screw rod 4 to adjust the extrusion depth of the circulating blood pump chamber 11, and through the control of the linear stepping motor 3, the circulation blood can be adjusted The pump chamber 11 has the effect of stepless regulation and control of the extrusion amplitude. The control range of the extrusion amplitude of the circulating blood pump chamber 11 can be from the maximum value to 0. If the extrusion amplitude of one side is zero, it is equivalent to the double ventricle extracorporeal blood pump chamber 11 stopping the output flow. Therefore, Adjusting and controlling the two linear stepping motors 3 installed side by side in the groove of the stepless control device of the present invention to squeeze the driving seat 1, the squeezing amplitude of the circulating blood pump chambers 11 on the left and right sides can reach their respective preset values, thereby It can respectively realize the rapid operation of various modes such as the left single-circulation blood pump chamber 11 operation, the right single-circulation blood pump chamber 11 operation, dual-chamber synchronous operation with the same flow rate, and dual-chamber synchronous operation with different flow rates, etc. Or a slow and smooth transition.
本发明的工作过程如下：控制开关打开后，左、右两侧的两个直线步进电机3开始运转，移动丝杆4带动其前端的血泵挤压头5后退复位，触碰到限位开关后电机停转，血泵挤压头5位置坐标清零，血泵辅助模式无级调控装置处于待机状态。本发明可根据使用需要和预先的编程，通过可编程逻辑控制器发出指令驱动直线步进电机3运转，由移动丝杆4带动血泵挤压头5作直线移动，调节血泵挤压头5与循环血泵室11之间的距离，当血泵挤压头5位置坐标为零位时，血泵挤压头5在双心室体外辅助循环血泵工作的任何时相均不与循环血泵室11接触，等于该泵室停止工作，无流量输出；当血泵挤压头5位置坐标为最大限定值时，血泵挤压头5在双心室体外辅助循环血泵工作的收缩末期挤压循环血泵室11幅度最大，等于该泵室满负荷工作，以最大流量输出，以此类推。血泵挤压头5位置坐标为零位、到中位、到最大位之间，可以有从小到大的不同挤压泵室幅度可供选择，因此达到精确调整左、右两侧循环血泵室11流量的目的。左、右两个直线步进电机3的驱动器如果接到相同的指令，则左、右两侧循环血泵室11同步运行，流量输出相同；如果接到不同的指令，则以各自的负荷量工作，流量输出不同。通过发出各种的指令，就可以使双心室体外辅助循环血泵在双泵同步运行，左侧单泵运行，右侧单泵运行，双泵不同负荷量运行等各种模式之间转换，使双心室体外辅助循环血泵易于控制、从而协助提高了血泵的可控制程度，使其有利于多用途的智能化应用。The working process of the present invention is as follows: After the control switch is turned on, the two linear stepper motors 3 on the left and right sides start to run, and the moving screw 4 drives the blood pump extrusion head 5 at the front end to retreat and reset, and touches the limit After the switch is switched on, the motor stops, the position coordinates of the blood pump extrusion head 5 are reset to zero, and the blood pump auxiliary mode stepless control device is in a standby state. The present invention can drive the linear stepper motor 3 to run by issuing instructions through the programmable logic controller according to the needs of use and the pre-programming, and the blood pump extrusion head 5 is driven by the moving screw 4 to move linearly to adjust the blood pump extrusion head 5 The distance from the circulating blood pump chamber 11, when the position coordinates of the blood pump extruding head 5 is zero, the blood pump extruding head 5 is not in contact with the circulating blood pump at any time when the biventricular extracorporeal blood pump is working. When the chamber 11 is in contact, it means that the pump chamber stops working and there is no flow output; when the position coordinates of the blood pump extrusion head 5 are at the maximum limit value, the blood pump extrusion head 5 is squeezed at the end of systole when the biventricular extracorporeal circulation blood pump works The amplitude of the circulating blood pump chamber 11 is the largest, which means that the pump chamber works at full capacity and outputs at the maximum flow rate, and so on. The position coordinates of the blood pump extrusion head 5 are between zero position, middle position and maximum position, and there are different extrusion pump chamber ranges from small to large to choose from, so as to achieve precise adjustment of the left and right sides of the circulating blood pump Chamber 11 for flow purposes. If the drivers of the two linear stepper motors 3 on the left and right receive the same instruction, the circulating blood pump chambers 11 on the left and right sides will run synchronously, and the flow output will be the same; work, the flow output is different. By issuing various instructions, the biventricular extracorporeal circulation blood pump can be switched among various modes such as double pump synchronous operation, left single pump operation, right single pump operation, double pump operation with different loads, etc., so that The biventricular extracorporeal auxiliary circulation blood pump is easy to control, thereby helping to improve the controllability of the blood pump, making it beneficial to multi-purpose intelligent application.
本发明无级调控装置的直线步进电机3，也可以采用直线伺服电机，利用直线伺服电机的位移编码信息反馈，不但同样能够实现上述技术效果，且更适合智能化精确调控。The linear stepping motor 3 of the stepless control device of the present invention can also use a linear servo motor, and utilize the displacement coding information feedback of the linear servo motor, which can not only achieve the above technical effects, but also be more suitable for intelligent and precise control.
上述实施方式只是本发明的一个实例，不是用来限制发明的实施与权利范围，凡依据本发明申请专利保护范围所述的内容做出的等效修饰和变化，均应包括在本发明申请专利保护范围内。The above-described embodiment is only an example of the present invention, and is not used to limit the implementation and scope of rights of the invention. All equivalent modifications and changes made according to the content described in the patent protection scope of the present invention application shall be included in the patent application of the present invention. within the scope of protection.
| Application Number | Priority Date | Filing Date | Title |
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| CN201610030591.6ACN105709286B (en) | 2016-01-18 | 2016-01-18 | With the matching used stepless regulation and control device in biventricular external auxiliary circulation blood pump room |
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| CN201610030591.6ACN105709286B (en) | 2016-01-18 | 2016-01-18 | With the matching used stepless regulation and control device in biventricular external auxiliary circulation blood pump room |
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| CN201610030591.6AExpired - Fee RelatedCN105709286B (en) | 2016-01-18 | 2016-01-18 | With the matching used stepless regulation and control device in biventricular external auxiliary circulation blood pump room |
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| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20180731 Termination date:20220118 | |
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