技术领域technical field
本发明涉及一种捕获并去除输液管中气泡的装置，属于精密驱动领域。The invention relates to a device for capturing and removing air bubbles in a transfusion tube, which belongs to the field of precision driving.
背景技术Background technique
众所周知，随着医疗水平的日新月异的提高，输液成本的降低。输液治疗已经成为百姓治疗疾病的有效手段。其中静脉输液是临床医疗中最为常见的一种给药方法。它是采用点滴方法，将注射用药直接输进静脉血管中，这种用药方式最为直接，吸收快，见效快。但输液时其卫生要求、安全要求应最为严格。特别是在滴点时，药液中不得有大气泡，否则可能造成患者血管中出现气塞而危及生命。在输液过程中，常遇到排气不彻底，常有散落气泡附着在输液管壁内。要排出这些气泡，常见的方法是用手指不停地弹动输液管，使气泡与管壁分离，然后上浮排除到莫菲氏壶中。在操作中发现：此法排气泡，气泡上浮困难，难以排除干净，且耗费一定的时间。主要原因是手不停地弹动管壁时，输液管将会持续左右震动，气泡同样也受到左右震动力的作用而分解了上浮的力量，因而上浮速度有所减缓。然而现有的一些发明装置只是涉及到如何利用超声检测原理来探测输液管中的气泡问题，而并未提出该如何捕获它并去除输液管气泡的方法与装置。为了去除输液管中的气泡，本发明提出了一种捕获并去除气泡的方法与装置。该装置是利用超声的两种原理来除去气泡，与常规的方法有截然的不同。该发明装置是利用压电换能器发生装置和可移动的反射装置产生的超声驻波声压来捕获并固定输液管中的气泡于波节处；然后再利用超声空化器件产生的高频声压来击碎波节处捕获到的输液管中的气泡，从而达到捕获并去除输液管中气泡的问题。As we all know, with the improvement of the medical level, the cost of infusion is reduced. Infusion therapy has become an effective means for common people to treat diseases. Among them, intravenous infusion is the most common method of drug administration in clinical medicine. It adopts drip method to directly infuse the medicine for injection into the vein, which is the most direct way of medicine, with fast absorption and quick effect. However, the hygienic and safety requirements should be the most stringent during transfusion. Especially at the drop point, there must be no large air bubbles in the liquid medicine, otherwise it may cause air blockage in the blood vessels of the patient and endanger life. During the infusion process, it is often encountered that the exhaust is not complete, and scattered air bubbles often adhere to the wall of the infusion tube. To discharge these air bubbles, the common method is to keep flicking the infusion tube with your fingers to separate the air bubbles from the tube wall, and then float up and discharge them into the Murphy's pot. During the operation, it was found that this method exhausts the air bubbles, the air bubbles are difficult to float up, it is difficult to get rid of them, and it takes a certain amount of time. The main reason is that when the hand keeps flicking the tube wall, the infusion tube will continue to vibrate left and right, and the air bubbles will also be affected by the left and right vibration force to decompose the floating force, so the floating speed will be slowed down. However, some existing inventive devices only relate to how to detect the air bubbles in the infusion tube using the principle of ultrasonic detection, but do not propose methods and devices for how to capture it and remove the air bubbles in the infusion tube. In order to remove the air bubbles in the infusion tube, the present invention provides a method and device for capturing and removing the air bubbles. The device uses two principles of ultrasound to remove air bubbles, which is completely different from conventional methods. The inventive device uses the ultrasonic standing wave sound pressure generated by the piezoelectric transducer generator and the movable reflection device to capture and fix the air bubbles in the infusion tube at the wave nodes; and then uses the high-frequency sound pressure generated by the ultrasonic cavitation device to The air bubbles in the infusion tube captured at the wave nodes are crushed, so as to capture and remove the air bubbles in the infusion tube.
发明内容Contents of the invention
为了去除输液管中存在的气泡，本发明设计了一种捕获并去除输液管中气泡的装置。该装置利用超声驻波悬浮的原理来筛选捕获气泡，使其稳定悬浮在超声驻波波节处。然后再用超声空化的原理将捕获到的气泡予以击碎，从而达到去除输液管中存在气泡的问题。In order to remove the air bubbles in the infusion tube, the present invention designs a device for capturing and removing the air bubbles in the infusion tube. The device utilizes the principle of ultrasonic standing wave suspension to screen and capture air bubbles, making them stably suspended at the nodes of the ultrasonic standing wave. Then, the principle of ultrasonic cavitation is used to crush the trapped air bubbles, so as to achieve the problem of removing air bubbles in the infusion tube.
为达到以上目的，本发明采用以下技术方案：一种捕获并去除输液管中气泡的装置，包括压电换能器发生装置部分、可移动的反射装置部分、超声空化器件部分和激光检测反馈装置。In order to achieve the above object, the present invention adopts the following technical solutions: a device for capturing and removing air bubbles in the infusion tube, including a piezoelectric transducer generating device part, a movable reflecting device part, an ultrasonic cavitation device part and a laser detection feedback device.
压电换能器发生装置部分：超声压电换能器(200)由变幅杆(204)、节面板(203)、两片压电陶瓷片(202)和后端盖(201)构成。通过在两片压电陶瓷片(202)(注意两片陶瓷片在结构参数上应具有完全的一致性)施加正负电压即可实现超声压电换能器(200)的整体振动，再通过变幅杆(204)放大压电陶瓷片(202)的振幅。从而实现超声压电换能器(200)的高频振动。超声压电换能器(200)通过螺钉(4)固定在换能器支架(1)上。其中换能器支架(1)通过螺钉(12)固定在底座(10)上。从而构成一个完整的固定式压电换能器发生装置。通过改变超声发生控制器的频率来匹配超声压电换能器(200)的频率使其处于共振状态。通过改变超声发生控制器的功率可获得高强度的超声驻波。Part of the piezoelectric transducer generating device: the ultrasonic piezoelectric transducer (200) is composed of a horn (204), a joint plate (203), two piezoelectric ceramic sheets (202) and a rear end cover (201). The overall vibration of the ultrasonic piezoelectric transducer (200) can be realized by applying positive and negative voltages on two piezoelectric ceramic sheets (202) (note that the two ceramic sheets should have complete consistency in structural parameters), and then through The horn (204) amplifies the vibration amplitude of the piezoelectric ceramic sheet (202). Therefore, the high-frequency vibration of the ultrasonic piezoelectric transducer (200) is realized. The ultrasonic piezoelectric transducer (200) is fixed on the transducer bracket (1) through screws (4). Wherein the transducer support (1) is fixed on the base (10) by screws (12). Thus a complete fixed piezoelectric transducer generating device is formed. The frequency of the ultrasonic piezoelectric transducer (200) is matched to make it in a resonance state by changing the frequency of the ultrasonic generation controller. High-intensity ultrasonic standing waves can be obtained by changing the power of the ultrasonic generation controller.
可移动的反射装置部分：本发明采用的反射装置为可移动的反射装置，由于压电换能器发生装置处于固定位置，则需要通过调节可移动的反射装置来夹持输液管，并起反射超声前进波的作用。可移动的反射装置有反射端(7)、XY轴移动平台(800)和调节旋钮(801)构成。反射端(7)固定在XY轴移动平台(800)的内槽内，通过调节旋钮(801)可实现固定在XY轴移动平台(800)上的反射端(7)左右、前后的移动以夹持待测输液管。其中XY轴移动平台(800)通过螺钉(11)固定在底座(10)上。可移动的反射装置和压电换能器发生装置共同构成了一套完整的超声驻波发生机构。通过调节超声发生控制器的频率可使超声压电换能器(200)处于共振状态并激发出超声前进波，前进波经反射端(7)反射回来在波节处与前进波相互叠加；从而使得波节处的振速为零。同时，流进该超声前进波区域内的气泡均会在超声前进波的作用下，被声辐射压推移至波节处并稳定悬浮在波节处，从而实现输液管中气泡的捕获。Movable reflection device part: The reflection device adopted in the present invention is a movable reflection device. Since the piezoelectric transducer generating device is in a fixed position, it is necessary to clamp the infusion tube by adjusting the movable reflection device and reflect The role of ultrasonic forward waves. The movable reflection device is composed of a reflection end (7), an XY-axis moving platform (800) and an adjustment knob (801). The reflective end (7) is fixed in the inner groove of the XY-axis mobile platform (800), and the left-right, front-back movement of the reflective end (7) fixed on the XY-axis mobile platform (800) can be realized by adjusting the knob (801) to clamp Hold the infusion tube to be tested. Wherein the XY-axis moving platform (800) is fixed on the base (10) by screws (11). The movable reflecting device and the piezoelectric transducer generating device together constitute a complete set of ultrasonic standing wave generating mechanism. By adjusting the frequency of the ultrasonic generation controller, the ultrasonic piezoelectric transducer (200) can be placed in a resonant state and an ultrasonic forward wave is excited, and the forward wave is reflected back by the reflection end (7) and superimposed with the forward wave at the node; thus Make the vibration velocity at the node zero. At the same time, the air bubbles flowing into the area of the ultrasonic forward wave will be pushed to the node by the sound radiation pressure under the action of the ultrasonic forward wave and stably suspended at the node, thereby realizing the capture of the air bubbles in the infusion tube.
超声空化器件部分：超声空化器件部分是用于破碎输液管中已被超声驻波捕获到的气泡。通过调节超声空化发生控制器的频率和功率可达到不同的空化效果。Ultrasonic cavitation device part: The ultrasonic cavitation device part is used to break the bubbles in the infusion tube that have been captured by ultrasonic standing waves. Different cavitation effects can be achieved by adjusting the frequency and power of the ultrasonic cavitation controller.
作为本发明的优化方案，超声空化器件由超声空化压电片(301)、PMMA支架(302)和沉积在超声空化压电片(301)上的合成柔性材料(303)构成。As an optimized solution of the present invention, the ultrasonic cavitation device is composed of an ultrasonic cavitation piezoelectric sheet (301), a PMMA support (302) and a synthetic flexible material (303) deposited on the ultrasonic cavitation piezoelectric sheet (301).
作为本发明的优化方案，合成柔性材料(303)与PMMA支架(302)固定粘结在一起。As an optimized solution of the present invention, the synthetic flexible material (303) and the PMMA bracket (302) are fixedly bonded together.
作为本发明的优化方案，PMMA支架(302)内嵌在空化支架(13)内，其中空化支架(13)通过螺钉(12)稳定固定在底座(10)上。As an optimized solution of the present invention, the PMMA bracket (302) is embedded in the cavitation bracket (13), wherein the cavitation bracket (13) is stably fixed on the base (10) by screws (12).
作为本发明的优化方案，选用合成柔性材料(303)沉积在超声空化压电片(301)上，选用柔性材料是考虑其不会抑制超声空化压电片(301)的振动，还可起连接超声空化压电片(301)与PMMA支架的桥梁。待利用压电换能器发生装置和可移动的反射装置产生的超声驻波捕获到输液管(6)中的气泡于波节处时，再利用超声空化器件产生的高效聚焦的声辐射压来克服气泡的阈值，使其在正负声压的作用下被击碎。As an optimization scheme of the present invention, a synthetic flexible material (303) is selected to be deposited on the ultrasonic cavitation piezoelectric sheet (301), and the flexible material is selected to consider that it will not inhibit the vibration of the ultrasonic cavitation piezoelectric sheet (301), and it can also It acts as a bridge connecting the ultrasonic cavitation piezoelectric sheet (301) and the PMMA support. When the ultrasonic standing wave generated by the piezoelectric transducer generating device and the movable reflecting device is used to capture the bubbles in the infusion tube (6) at the wave nodes, the highly efficient focused acoustic radiation pressure generated by the ultrasonic cavitation device is used to Overcome the threshold of air bubbles to be crushed under the action of positive and negative sound pressure.
作为本发明的优化方案，本发明还添加了激光检测反馈装置。该装置是用于检测识别输液管中气泡的尺寸大小，当气泡大小在不同尺寸范围时通过激光检测反馈装置把检测信号传送至超声发生控制器和超声空化发生控制器，使其分别自动调至合适的频率来激发压电换能器发生装置和超声空化器件，然后产生大小合适的驻波声辐射压来捕获固定不同尺寸的气泡和产生不同的空化高频声辐射压来克服不同气泡的空化阈值，从而达到去除不同尺寸大小气泡的目的。As an optimized solution of the present invention, the present invention also adds a laser detection feedback device. The device is used to detect and identify the size of the bubbles in the infusion tube. When the size of the bubbles is in a different size range, the detection signal is transmitted to the ultrasonic generation controller and the ultrasonic cavitation generation controller through the laser detection feedback device, so that they can be automatically adjusted respectively. To the appropriate frequency to excite the piezoelectric transducer generator and ultrasonic cavitation device, and then generate a standing wave acoustic radiation pressure of appropriate size to capture and fix bubbles of different sizes and generate different cavitation high-frequency acoustic radiation pressure to overcome the different bubbles Cavitation threshold, so as to achieve the purpose of removing bubbles of different sizes.
本发明的优点在于：把超声驻波悬浮理念应用到输液管中气泡的捕获固定中，再利用超声空化的原理把捕获固定于波节处的气泡给予破碎。通过激光检测反馈装置可控制不同频率以实现不同尺寸大小气泡的破碎，从而成功地实现了去除输液管中气泡的问题。该装置结构简单，微型化，易便携，易操作，可随时随地进行使用，安装方便。The invention has the advantages of applying the concept of ultrasonic standing wave suspension to the capture and fixation of air bubbles in the infusion tube, and then using the principle of ultrasonic cavitation to break the air bubbles captured and fixed at the wave nodes. Different frequencies can be controlled by the laser detection feedback device to achieve the crushing of air bubbles of different sizes, thereby successfully realizing the problem of removing air bubbles in the infusion tube. The device is simple in structure, miniaturized, easy to carry, easy to operate, can be used anytime and anywhere, and is easy to install.
附图说明Description of drawings
图1是一种捕获并去除输液管中气泡的装置的三维结构示意图；Fig. 1 is a three-dimensional structural schematic diagram of a device for trapping and removing air bubbles in an infusion tube;
图2是一种捕获并去除输液管中气泡的装置的二维结构示意图，其中图中标记“5”为输液管中的气泡；Figure 2 is a schematic diagram of a two-dimensional structure of a device for capturing and removing air bubbles in the infusion tube, where the mark "5" in the figure is the air bubble in the infusion tube;
图3是超声压电换能器与超声空化器件的细节结构示意图；Fig. 3 is a detailed structural schematic diagram of an ultrasonic piezoelectric transducer and an ultrasonic cavitation device;
图4是XY轴移动平台与底座固定方式的结构示意图。Fig. 4 is a structural schematic diagram of the fixing method of the XY-axis mobile platform and the base.
具体实施方式detailed description
实施方式Implementation
参见图3，超声压电换能器(200)由变幅杆(204)、节面板(203)，两片压电陶瓷片(202)和后端盖(201)构成，通过在两片压电陶瓷片(202)施加正负电压即可实现超声压电换能器(200)的整体共振。值得注意的是，整个压电换能器(200)处于共振模式，但是超声压电换能器(200)的节面板(203)处的振幅须为零，这是可以通过设计共振频率与波长来保证的。由于超声压电换能器(200)的节面板(203)不处于振动模式下，因此可通过螺钉(4)把超声压电换能器(200)固定在换能器支架(1)上，而两片压电陶瓷片(202)产生的高频低幅振动经由变幅杆(204)可实现高频高幅的振动。换能器支架(1)通过螺钉(12)固定在底座(10)上。这样就完成了压电换能器发生装置部分的安装。底座(10)是通过螺钉(9)固定在地脚(14)上。Referring to Fig. 3, the ultrasonic piezoelectric transducer (200) is composed of a horn (204), a joint plate (203), two piezoelectric ceramic sheets (202) and a rear end cover (201). The overall resonance of the ultrasonic piezoelectric transducer (200) can be realized by applying positive and negative voltages to the electric ceramic sheet (202). It is worth noting that the whole piezoelectric transducer (200) is in the resonance mode, but the amplitude at the nodal plate (203) of the ultrasonic piezoelectric transducer (200) must be zero, which can be obtained by designing the resonance frequency and wavelength to guarantee. Since the joint plate (203) of the ultrasonic piezoelectric transducer (200) is not in the vibration mode, the ultrasonic piezoelectric transducer (200) can be fixed on the transducer bracket (1) by screws (4), The high-frequency and low-amplitude vibration generated by the two piezoelectric ceramic sheets (202) can realize high-frequency and high-amplitude vibration through the horn (204). The transducer support (1) is fixed on the base (10) by screws (12). This completes the installation of the piezoelectric transducer generating device. Base (10) is to be fixed on the foundation (14) by screw (9).
参见图3，在超声空化压电片(301)上沉积合成柔性材料(303)，然后合成柔性材料(303)粘结在PMMA支架(302)上，最后将PMMA支架(302)过盈内嵌在空化支架(13)内。选用合成柔性材料(303)是因为当超声空化压电片(301)处于高频振动时，柔性材料不会抑制其压电片的振动，同时又可实现压电片与刚性支架的连接。柔性材料选用的不同，所产生的整体超声空化器件的谐振频率是不同的。本发明要保证超声空化器件的设计，须确保其柔性材料不会较大程度的干扰、抑制超声空化压电片(301)的振动。通过螺钉(12)可实现空化支架(13)与底座(10)的固定，即可完成超声空化器件部分的安装。一般情况下，超声空化器件是一个整体部件，不可拆卸。Referring to Fig. 3, deposit synthetic flexible material (303) on the ultrasonic cavitation piezoelectric sheet (301), then synthetic flexible material (303) is bonded on the PMMA support (302), finally the PMMA support (302) is interfering with Embedded in the cavitation support (13). The synthetic flexible material (303) is selected because when the ultrasonic cavitation piezoelectric sheet (301) vibrates at high frequency, the flexible material will not suppress the vibration of the piezoelectric sheet, and at the same time, it can realize the connection between the piezoelectric sheet and the rigid support. The resonant frequency of the overall ultrasonic cavitation device produced is different depending on the choice of flexible materials. In order to ensure the design of the ultrasonic cavitation device, the present invention must ensure that its flexible material will not interfere to a large extent and suppress the vibration of the ultrasonic cavitation piezoelectric sheet (301). The fixing of the cavitation bracket (13) and the base (10) can be realized through the screw (12), and the installation of the ultrasonic cavitation device part can be completed. Generally, the ultrasonic cavitation device is an integral part and cannot be disassembled.
参见图2，反射端(7)固定在XY轴移动平台(800)的内槽内，XY轴移动平台(800)通过螺钉(11)固定在底座(10)上。参见图3，这样即可完成可移动的反射装置的安装。其中XY轴移动平台(800)上的调节按钮(801)可实现反射端(7)的左右、前后的移动。Referring to Fig. 2, the reflection end (7) is fixed in the inner groove of the XY-axis moving platform (800), and the XY-axis moving platform (800) is fixed on the base (10) by screws (11). Referring to Fig. 3, the installation of the movable reflecting device can be completed in this way. Wherein the adjustment button (801) on the XY-axis moving platform (800) can realize the left-right, front-back movement of the reflection end (7).
当把待测的输液管(6)安放在超声空化器件的压电片(301)的内圈上，输液管(6)的左端侧面紧贴在超声压电换能器(200)的变幅杆(204)的前端内圈上，通过旋转调节按钮(801)可实现反射端(7)的左右、前后的移动，从而达到夹持住输液管(6)的作用。通过输液管(6)的左端面、右端面和下端面的三个位置的固定，即可实现输液管(6)的夹持。此时，即完成了整个发明装置的安装，同时在输液管(6)附近设有激光检测反馈装置，该装置是用于把检测到的信号反馈给超声发生控制器和超声空化发生控制器，使其分别做出频率相应改变的目的。When the infusion tube (6) to be tested is placed on the inner ring of the piezoelectric sheet (301) of the ultrasonic cavitation device, the left end side of the infusion tube (6) is close to the transducer of the ultrasonic piezoelectric transducer (200). On the inner ring of the front end of the web rod (204), by rotating the adjustment button (801), the reflection end (7) can move left and right, forward and backward, so as to achieve the effect of clamping the infusion tube (6). The clamping of the infusion tube (6) can be realized by fixing the three positions of the left end face, the right end face and the lower end face of the infusion tube (6). At this point, the installation of the entire inventive device has been completed, and a laser detection feedback device is provided near the infusion tube (6), which is used to feed back the detected signal to the ultrasonic generation controller and the ultrasonic cavitation generation controller. , so that the purpose of making corresponding frequency changes respectively.
待输液管(6)固定在压电换能器发生装置和可移动的反射装置之间后，通过调节超声发生控制器此时压电换能器发生装置就会产生非线性高强度的声辐射压前进波，当这种前进波传播至可移动的反射装置后，经可移动的反射装置的反射端(7)反射回的反射波就会与激发的前进波相互叠加，便在输液管(6)中形成驻波的波节。该波节呈现出的状态为振速为零，同时在压电换能器发生装置和可移动的反射装置之间区域内会形成高声强的声辐射压。由于输液管中的气泡会在重力作用下随着输液一起下行，当气泡流进前进波与反射波区域时，这种非线性高辐射压会克服气泡与周围液体之间的相互粘滞力与惯性力，驱使气泡改变原来的轨迹而汇集在波节处，同时在波节周围由驻波声辐射压产生的回复力也会拖曳气泡的下行力，使其悬浮固定在波节处。由于高声场区域内具有强大的声辐射压，输液管中流进该区域内的所有气泡均会这种声辐射压力下克服自身与周围液体间的粘滞力与惯性力而被推移至波节处，从而实现输液管的气泡均被筛选出来并悬浮固定在波节处。After the infusion tube (6) is fixed between the piezoelectric transducer generating device and the movable reflection device, the piezoelectric transducer generating device will generate nonlinear high-intensity acoustic radiation by adjusting the ultrasonic generation controller. Pressure forward wave, when this forward wave propagates to the movable reflector, the reflected wave reflected back by the reflective end (7) of the movable reflector will superimpose with the excited forward wave, and the infusion tube ( 6) Form the nodes of the standing wave. The state presented by this wave node is that the vibration velocity is zero, and at the same time, a sound radiation pressure with high sound intensity will be formed in the region between the piezoelectric transducer generating device and the movable reflecting device. Since the air bubbles in the infusion tube will go down with the infusion under the action of gravity, when the air bubbles flow into the area of forward wave and reflected wave, this nonlinear high radiation pressure will overcome the mutual viscous force and The inertial force drives the bubbles to change their original trajectory and gather at the nodes. At the same time, the restoring force generated by the standing wave acoustic radiation pressure around the nodes will also drag the downward force of the bubbles, making them suspended and fixed at the nodes. Due to the strong acoustic radiation pressure in the high-sound field area, all the air bubbles flowing into the area in the infusion tube will be pushed to the wave node by overcoming the viscous force and inertial force between itself and the surrounding liquid under this acoustic radiation pressure. so that all the air bubbles in the infusion tube are screened out and suspended and fixed at the wave nodes.
此后打开超声空化发生控制器。待调节至适当频率时，超声空化器件即会处于高频的共振模态下，并产生高强度的聚焦声波，同时这种聚焦声波作用于悬浮固定在波节处的气泡上。当作用的声压值达到一定值(大于气泡的空化阈值)时，气泡就会发生时而生长，时而压缩的动力学过程。当负压作用于气泡时，气泡就会被拉长；当正压作用于气泡时，气泡就会处于压缩状态。当空化高频声辐射压达到一定值(大于气泡的空化阈值)时，气泡就会被击碎。从而达到去除输液管中气泡的目的。根据气泡动力学，频率越高的超声波聚焦能力越强。因此本发明装置应当选用高聚焦效果的、高频率的超声空化器件。由于气泡的空化阈值与输液的表面张力、粘度、惯性和气泡的直径密切相关。因此在超声空化器件安装之前，即前道输液管一侧，本装置还添加了用于检测识别输液管中气泡尺寸大小的激光检测反馈装置，当检测到的气泡在不同尺寸范围时，通过该反馈装置可把信号传送至超声发生控制器和超声空化发生控制器，使其分别自动调节至合适的频率来激发超声压电换能器处于共振模式和超声空化器件处于共振模式，然后产生合适大小的驻波声辐射压来捕获不同尺寸的气泡，和产生不同的空化高频声辐射压来克服不同尺寸气泡的空化阈值(气泡的空化阈值与气泡的尺寸大小有密切关系)，从而实现了输液管中每一个气泡均被捕获和去除的目的。在开始输液时该装置就需处于工作状态。Thereafter turn on the ultrasonic cavitation generation controller. When it is adjusted to an appropriate frequency, the ultrasonic cavitation device will be in a high-frequency resonance mode and generate high-intensity focused sound waves. At the same time, the focused sound waves act on the bubbles suspended and fixed at the nodes. When the acting sound pressure reaches a certain value (greater than the cavitation threshold of the bubble), the bubble will undergo a dynamic process of sometimes growing and sometimes compressing. When negative pressure acts on the bubble, the bubble will be stretched; when positive pressure is applied to the bubble, the bubble will be in a compressed state. When the cavitation high-frequency acoustic radiation pressure reaches a certain value (greater than the cavitation threshold of the bubble), the bubble will be crushed. So as to achieve the purpose of removing air bubbles in the infusion tube. According to bubble dynamics, the higher the frequency, the stronger the focusing ability of ultrasonic waves. Therefore, the device of the present invention should select a high-focusing effect, high-frequency ultrasonic cavitation device. Because the cavitation threshold of bubbles is closely related to the surface tension, viscosity, inertia and diameter of the infusion solution. Therefore, before the installation of the ultrasonic cavitation device, that is, on the side of the front infusion tube, this device also adds a laser detection feedback device for detecting and identifying the size of the bubbles in the infusion tube. When the detected bubbles are in different size ranges, through The feedback device can transmit signals to the ultrasonic generation controller and the ultrasonic cavitation generation controller, so that they are automatically adjusted to appropriate frequencies to excite the ultrasonic piezoelectric transducer in the resonance mode and the ultrasonic cavitation device in the resonance mode, and then Generate a standing wave acoustic radiation pressure of appropriate size to capture bubbles of different sizes, and generate different cavitation high-frequency acoustic radiation pressures to overcome the cavitation threshold of bubbles of different sizes (the cavitation threshold of bubbles is closely related to the size of the bubbles), Therefore, the purpose of capturing and removing every air bubble in the infusion tube is realized. The device needs to be in working order when the infusion is started.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307938.7ACN105944192A (en) | 2016-05-11 | 2016-05-11 | Device for capturing and removing air bubbles in infusion tube |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307938.7ACN105944192A (en) | 2016-05-11 | 2016-05-11 | Device for capturing and removing air bubbles in infusion tube |
| Publication Number | Publication Date |
|---|---|
| CN105944192Atrue CN105944192A (en) | 2016-09-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610307938.7APendingCN105944192A (en) | 2016-05-11 | 2016-05-11 | Device for capturing and removing air bubbles in infusion tube |
| Country | Link |
|---|---|
| CN (1) | CN105944192A (en) |
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|---|---|---|---|---|
| CN106940344A (en)* | 2017-03-31 | 2017-07-11 | 西北工业大学 | Integrative ultrasonic sensor and application method for ultrasound tomography system |
| CN108200525A (en)* | 2017-12-13 | 2018-06-22 | 中国科学院声学研究所 | A kind of system and method for measuring ultrasonic transducer mode of oscillation |
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| CN105079923A (en)* | 2015-09-16 | 2015-11-25 | 苏州市力得医疗器械设备厂 | Bubble removing device and application thereof |
| CN105143835A (en)* | 2012-10-02 | 2015-12-09 | 弗洛设计声能学公司 | Acoustophoretic separation technology using multi-dimensional standing waves |
| CN205084732U (en)* | 2015-07-13 | 2016-03-16 | 中国科学院声学研究所 | Cavitation cloud microbubble preparation facilities |
| WO2016054192A1 (en)* | 2014-09-30 | 2016-04-07 | Flodesign Sonics, Inc. | Acoustophoretic clarification of particle-laden non-flowing fluids |
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| CN202802342U (en)* | 2012-08-29 | 2013-03-20 | 深圳市好克光电仪器有限公司 | Infusion pump and bubble detecting device |
| CN105143835A (en)* | 2012-10-02 | 2015-12-09 | 弗洛设计声能学公司 | Acoustophoretic separation technology using multi-dimensional standing waves |
| WO2016054192A1 (en)* | 2014-09-30 | 2016-04-07 | Flodesign Sonics, Inc. | Acoustophoretic clarification of particle-laden non-flowing fluids |
| CN205084732U (en)* | 2015-07-13 | 2016-03-16 | 中国科学院声学研究所 | Cavitation cloud microbubble preparation facilities |
| CN105079923A (en)* | 2015-09-16 | 2015-11-25 | 苏州市力得医疗器械设备厂 | Bubble removing device and application thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106940344A (en)* | 2017-03-31 | 2017-07-11 | 西北工业大学 | Integrative ultrasonic sensor and application method for ultrasound tomography system |
| CN108200525A (en)* | 2017-12-13 | 2018-06-22 | 中国科学院声学研究所 | A kind of system and method for measuring ultrasonic transducer mode of oscillation |
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