CN1596868A - 精密液体配量器 - Google Patents

精密液体配量器 Download PDF

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CN1596868A
CN1596868A CNA2004100835591A CN200410083559A CN1596868A CN 1596868 A CN1596868 A CN 1596868A CN A2004100835591 A CNA2004100835591 A CN A2004100835591A CN 200410083559 A CN200410083559 A CN 200410083559A CN 1596868 A CN1596868 A CN 1596868A
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罗伯托·安吉利
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Molteni Lecalitti So
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Abstract

本发明提供一种用于精密液体配量器的液体烧瓶，包括一个具有螺纹瓶颈的主体，所述螺纹瓶颈配有用于与配量器的附件进行压锁耦接的装置，其中所述烧瓶的底部包括一对倾斜表面，所述表面在中部结合成一个构成所述烧瓶中液体存储的最低点的杯。本发明的烧瓶能确保完全地传送其中盛装的液体，此外，还能确保对烧瓶者检查和管理。

Description

精密液体配量器
本申请是申请号为00805062.7，申请日为2000年3月14日，发明名称为“精密液体配量器及其测定液体剂量的方法”的专利申请的分案申请。
技术领域
本发明涉及一种用于控制液体产品传送的精密配量器，尤其是用于美沙酮或其他药品制备的配量器，以及涉及用于包含尤其是用在精密液体配量器中的液体的烧瓶。
背景技术
在现有技术中，已知的美沙酮液体配量器通过一个螺旋泵从馈送储罐中抽取预定数量的液体。然后将液体剂量倒入一个将由患者拿走的玻璃杯中。这些已知的配量器大体上都是通过计算机实现对不同患者预见而进行的管理的识别和操作。
但是，这些已知的配量器在尤其是它们所能提供的剂量精度方面存在许多缺陷，考虑到所处理的病例的重要性和敏感性，以及考虑到能切实地保证美沙酮的精确用量的需要，在对美沙酮进行管理时精度具有特别重要的地位。
此外，当将要传送的液体包含在烧瓶中，并且必须确保烧瓶中包含的所有液体都被传送时(例如，在传送诸如美沙酮之类的药物时)，不仅液体配量器，而且烧瓶本身起着非常重要的作用，必须要设计特定的模式以便达到上述目的，并且操作员必须能够容易地检查烧瓶盛装的内容以及对其进行管理。
本发明的主要目的是提供一种用于液体产品，尤其是用于美沙酮的配量器，以便精确地测定液体剂量及测量操作过程中处理液体的量。以及本发明的另一个目的是提供一种烧瓶，其能确保完全地传送其中盛装的液体，此外，还能确保对烧瓶进行检查和管理。
发明内容
根据本发明的第一方面，提供一种精密液体配量器，包括一个中间储罐，所述中间储配备有至少一个液面水平探针和一个设置在所述储罐下游的第一泵以及一个设置在所述第一泵下游的阀门，所述配量器还包括一个通过一个盛装液体的烧瓶的吸管为所述中间储罐馈送液体的第二泵，所述第二泵通过所述配量器的一个附件连接到所述烧瓶上；所述阀门是一个三通螺线管阀门，用于从所述第一泵接收输入液体，其具有两个输出通路，一个输出通路通到所述储罐，另一个输出通路通到收集将被输送的液体的输出终端；所述配量器还包括一个微处理器单元，用于控制和管理所述第一泵和第二泵，所述液面水平探针及维持功能。
根据本发明的第二方面，提供一种用于精密液体配量器的液体烧瓶，包括一个具有螺纹瓶颈的主体，所述螺纹瓶颈配有用于与配量器的附件进行压锁偶接的装置，其中所述烧瓶的底部包括一对倾斜表面，所述表面在中部结合成一个构成所述烧瓶中液体存储的最低点的杯。
可见，上述目的根据本发明的美沙酮液体配量器已经达到，其中的水压管路包括一个用于使处理的液体循环流动的部分。该循环使得设置重复用于每个相同模式新传输的初始条件成为可能。此外所述水压管路还配有一个区别于配给烧瓶的中间储罐，该中间储罐作为可能产生的气泡的泻放器，并具有一个检测点，用于检测所述水压管路中提供的液体的量，同时也检测温度条件。
根据本发明的水压管路包括一个泵，最好是螺旋泵，该泵由一个装有液体能互换的烧瓶馈送液体并将所述液体送到一个中间储罐。后者的输出通过一个手动阀门连接到一个高精度泵，该高精度泵最好是活塞型的泵，然后连接到一个三通螺线管阀门，该阀门的一个出口连接到所述中间储罐，另一个出口连接到接收将输送的定量液体的终端接收器中。所述中间储罐配有水平探针，并可能配置一个温度探针。
根据本发明的第三方面，提供一种测定液体剂量的方法，包括以下步骤：提供一个如上所述的液体配量器；检测所述配量器的所述控制探针和传感器；对中间储罐充液到由一个水平探针检测出的最高液面水平，例如可以用一个由盛装将要输送液体的烧瓶馈送液体的螺旋泵来实现；对一个由活塞型第一泵操作的循环管路充液，所述管路从所述储罐向上延伸至一个阀门，该阀门最好是三通输送阀门；当接到第一输送命令时，对所述烧瓶的喷嘴充液以送入液体，并查找所述泵的一个零点；在用与所述烧瓶相同的烧瓶进行后续的输送时，查找所述泵的该零点；打开所述输送阀门并对所述主泵进行操作；检查所述储罐的液面水平；检查已输送的液体的量：如果其已相当于预见的量，则中断输送并关闭所述输送阀门；以及等待新的输送命令。
本发明的第一个优点是可以获得高精度并且在相同的水压管路起始条件下可以确保重复地输送液体。
本发明的第二个优点是可能在所述设备不使用时保持液体的运动，这就防止了该液体不同成分的任何可能的沉淀或分离。
本发明的这些以及其他优点将从随后的说明以及附图中更清楚地体现出来，这些都是作为一个非限制性的实施例提供的。
附图说明
图1是根据本发明的精密配量器的示意图；
图2.1，2.2，2.3和2.4是根据本发明的方法不同阶段的流程图，其中，P1代表螺旋泵，P2代表活塞泵，EV代表三通螺线管阀门，S2代表中间储液罐，M2代表S2的最高液面水平。具体说，图2.1和2.2是关于中间储罐液面水平的充入和维持的(程序01)，图2.3和2.4是关于所述主泵管路的充液的(程序02)；图3a和3b分别是如图1中设备所用烧瓶的侧视图和俯视图。
具体实施方式
参照附图，根据本发明的配量器由以下部分组成：
一个泵2，例如一个螺旋泵，经由管道12由一个可互换的装盛液体的烧瓶1馈送液体；
一个中间储罐3，经由管道21由所述泵2馈送液体，所述储罐配置有一个或多个液面水平探针31-33，并可能配有一个温度探针34；
一个高精度泵4，最好是具有一个或多个活塞的类型，经由管道35和阀门7由所述中间储罐3馈送液体；
一个三通螺线管阀门5，设置在所述高精度泵4的下游，该阀门在此接收输入液体并具有两个输出通路，一个输出通路经由管道51连接到储罐3，另一条输出通路经由管道52连接到用于收集将输送液体的终端接收器6；以及
一个微处理器单元，用于控制和管理所述泵2和所述高精度泵4，控制和管理维持功能及所述探针31-34。
从附图中可以看出，根据本发明，在所述储罐3和三通螺线管阀门5之间的部分水压管路构成一个循环管路H，在该管路中，液体可以通过所述高精度泵4和所述三通螺线管阀门5进行循环。
在操作期间，所述泵2从所述烧瓶1中吸取液体并将其送入所述储罐3中，直到达到一个适当的液面水平(该水平将在后续的操作中保留)，这一过程将由所述液面水平探针31-33检测。如果液面水平足够，所述高精度泵4开始使液体循环直到其确定完全充满管道。
响应第一输送要求，所述控制单元打开所述三通螺线管阀门5(因此，当然关闭所述循环管路)以在输送期间输送要求数量的液体。
实施例中描述的高精度泵最好是一种活塞型泵(注册商标为TRAVCYL，型号为16，由Encynova国际有限公司制造)，其能够由步进电机操作，并且在每个已知的循环期间，可以确切地知道所移动的液体量。
如果两个连续的输送使用中出现暂停，可能引起液体状态变化或偏离预先设定的启动输送条件的，则所述高精度泵4执行预定数量的循环。
为了保证每次输送的精确重复，所述高精度泵4还配有用于确定一个初始零点的装置，从该初始零点可以开始测量被输送的液体量。根据本发明，所述高精度泵4然后在每次输送时被复位并被带回到起始输送的位置。
上述装置由一个电磁邻近传感器组成，该传感器作为所述高精度泵活塞的运动的基准点并控制所述步进电机的前进。
在所述配量器被用于输送液体美沙酮时，尤其重要的是要保证装盛在所述烧瓶中的液体完全地输送，而且还要确保确实可能检查对所述烧瓶的管理。
参照图3a和3b，根据本发明的烧瓶包括一个主体1，该主体具有一个有螺纹的瓶颈8，用于连接到一个密封型包装塞。所述瓶颈还具有齿81以便和用于连接到所述设备水压管路的附件13的插销结合。
所述烧瓶的底部包括一对轻微倾斜的表面9，91，该两个表面接合成为一个半球形的并构成所述烧瓶中液体存储的最低点的杯93。
在所述表面9的下方设有一个肋片92，用于保证在该烧瓶壳体内将对所述烧瓶水平支撑在所述设备(配量器)上。
为了确保吸管16(通过该吸管从烧瓶中吸取液体)总是从所述杯93的最低水平点吸取液体，所述吸管最好是与所述附件13作成一体，这样就可以在插销连接中找到一个可靠的顶部参考点。
所述烧瓶1还设置有可由所述配量器的合适传感器14读出的识别装置15。
在一个优选实施例中，根据一种本身已知的识别技术，所述识别装置15为RFID无线电频率型，而相应的传感器14固定在所述设备上，并连接到所述设备的控制单元(未示出)，该控制单元检查已输送液体的容积和目的地。
从上述对本发明的烧瓶的描述和图可容易理解，本发明的烧瓶允许完全地传送烧瓶中包含的液体，以避免浪费或者不允许使用仍可能在烧瓶中的未传送的液体。
参照图2.1到2.4，本发明还包括一种用于精确计量液体剂量的方法，尤其是使用上述类型配量器的计量方法。
所述方法包括以下步骤：
检测所述配量器的控制探针和传感器；
对一个中间储罐S2充液到由液面水平探针检测出的最高液面水平M2(程序01)，例如可以用一个由装盛将输送液体的烧瓶馈送液体的螺旋泵来实现这一步骤；
对一个由泵P2操作的循环管路充液(程序02)，该泵例如可以是活塞型的，所述管路从所述储罐S2延伸至一个输送阀门EV；
当接到一个第一输送命令时，对所述烧瓶的喷嘴充液以送入液体，并查找所述高精度泵的一个零点；在用所述烧瓶进行后续的输送时，查找所述高精度泵的该零点；
打开所述输送阀门EV并对所述泵P2进行操作；
执行程序01以检查所述储罐S2的液面水平；
检查所输送的液体量：如果其已经相当于预见的量，则中断输送并关闭所述输送阀门EV；以及
等待新的输送命令。
此外，当在两个连续的输送之间出现延长的停涉情况时，根据本发明的方法，执行所述循环程序02以避免所述高精度泵4的所述管路中液体状态的任何可能的改变(成分分离，气泡产生，等等)。

Claims (6)

1.一种用于精密液体配量器的液体烧瓶，其特征在于包括一个具有螺纹瓶颈(8)的主体(1)，所述螺纹瓶颈配有用于与配量器的附件(13)进行压锁耦接的装置(81)，其中所述烧瓶的底部包括一对倾斜表面(9，91)，所述表面在中部结合成一个构成所述烧瓶(1)中液体存储的最低点的杯(93)。
2.如权利要求1所述的烧瓶，其特征在于，所述装置(81)由一个耦接销钉组成。
3.如权利要求1所述的烧瓶，其特征在于，在所述一对表面中的一个表面(9)的下方设置有一个肋片(92)，用于保证在所述烧瓶的壳体内将所述烧瓶水平支撑在所述配置器上。
4.如权利要求1所述的烧瓶，其特征在于，所述烧瓶配有能被所述配量器的合适的装置(14)读出的识别装置(15)。
5.如权利要求4所述的烧瓶，其特征在于，所述识别装置(15)是RFID型。
6.如权利要求1所述的烧瓶，其特征在于，所述烧瓶是由塑料材料制成的。
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