CN101405048B - 带有多个面积的流体室的外科手术箱 - Google Patents

带有多个面积的流体室的外科手术箱 Download PDF

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CN101405048B
CN101405048B CN2007800095870A CN200780009587A CN101405048B CN 101405048 B CN101405048 B CN 101405048B CN 2007800095870 A CN2007800095870 A CN 2007800095870A CN 200780009587 A CN200780009587 A CN 200780009587A CN 101405048 B CN101405048 B CN 101405048B
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M·A·霍普金斯
S·X·高
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Alcon Inc
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Abstract

一种外科手术箱，该外科手术箱具有带感测部分和储存部分的抽吸室或注入室。所述感测部分具有小的横截面面积并便于准确的液位测量。储存部分具有较大的横截面面积以便于流体储存。

Description

带有多个面积的流体室的外科手术箱
技术领域
本发明通常关于用于显微外科手术系统的外科手术箱，更具体地是关于用于眼科显微外科手术系统的这种外科手术箱。
背景技术
在小切口外科手术过程中，具体地在眼科外科手术过程中，小探针被插入手术部位进行切割、切除、或者处理组织。在这些外科手术过程中，典型的是将液体注入到眼睛里，注入液体和组织从外科手术部位被抽吸。在本发明之前，所使用的抽吸系统的类型通常以流动控制或者真空控制为特征，这取决于系统中泵的类型。系统的每个类型均具有一些优点。
真空控制抽吸系统通过设定系统寻求保持的期望的真空等级来操作。流量取决于眼内压力、真空等级和流体通道中的流动的阻力。实际的流量信息是难以获得的。真空控制抽吸系统典型地是采用文氏管泵或隔膜泵。真空控制抽吸系统提供了快速响应时间、减小的真空等级的控制以及在抽吸空气过程例如在空气/流体交换过程中具有优良的流体性能的优点。这种系统的缺点是缺乏导致在超声乳化或与缺乏遮挡检测相关联的破碎过程中的瞬态的高流量的流动信息。由于实时非入侵地测量流动的问题，真空控制系统难于以流动控制模式操作。
流动控制抽吸系统通过为系统设定待保持的期望的抽吸流量来进行操作。流动控制抽吸系统典型地是使用蠕动泵、涡旋泵或叶片泵。流动控制抽吸系统提供稳定的流量和在遮挡情况下自动增加真空等级的优点。这种系统的缺点是相对低的响应时间、当采用大的柔性部件时的不期望的遮挡中断响应(occlusion break response)以及在尖端遮挡过程中真空不能线性减少。由于在测量真空时的时间延时可能导致控制环中的不稳定性，降低动态性能，所以流动控制系统在真空控制模式中难以操作。
一种当前可得的眼科外科手术系统——来自Storz仪器公司的MILLENIUM系统——包括真空控制抽吸系统(采用文氏管泵)和单独的流动控制抽吸系统(采用涡旋泵)。两种泵不能被同时使用，并且每个泵需要单独的抽吸管和箱。
另一种当前可得的眼科外科手术系统——来自Alcon实验室有限公司的
Figure G2007800095870D00021
系统——包括串联操作的文氏管泵和蠕动泵。文氏管泵抽吸来自外科手术部位的物质到小的收集室。蠕动泵抽取来自小的收集室的抽吸物到更大的收集袋。蠕动泵不提供对外科手术部位抽吸真空。因此，该系统作为真空控制系统进行操作。
尽管有了这些传统系统，但对于在眼科外科手术系统中改善的抽吸和注入应用流体学的需求继续存在。
发明内容
本发明涉及具有设置在其中的抽吸室或注入室的外科手术箱。该室包括用于允许对液位变化进行准确测量的下部感测部分和在外科手术过程中能对流体进行储存的上部储存部分。感测部分的横截面面积比储存部分的横截面面积小。
附图说明
为对本发明有更完整的理解以及进一步理解本发明的目的和优点，参考下面的描述并结合附图，其中：
图1是示出显微外科手术系统中抽吸控制的原理图；
图2是外科手术箱主体的正视图；和
图3是图2的外科手术箱主体的后视图。
具体实施方式
本发明的优选实施例及其优点通过参看图1-3得到最好的理解，不同图中的相同和相应的部分采用相同的附图标记。
显微外科手术系统10包括压缩气体源12、隔离阀14、真空比例阀16、任选的第二真空比例阀18、压力比例阀20、真空发生器22、压力传感器24、抽吸室26、液位传感器28、泵30、收集袋端口32、抽吸端口34、外科手术装置36、计算机或微处理器38，以及比例控制装置40。系统10的各种部件通过流体管道44、46、48、50、52、54、56和58实现流体相连。系统10的各种部件通过接口60、62、64、66、68、70、72、74和76实现电相连。阀14优选为“开/关”电磁阀。阀16-20优选为比例电磁阀。真空发生器22可以是用于产生真空的任何合适的装置，但是优选为真空芯片或文氏管芯片，真空芯片或文氏管芯片在当隔离阀14和真空比例阀16和/或18打开并且来自压缩气体源12的气体从真空发生器22通过时产生真空。压力传感器24可以是用于直接或间接测量压力和真空的任何合适的装置。液位传感器28可以是用于测量抽吸室26内的液体42位置的任何合适的装置，但是优选能够以连续的方式测量液位。液位传感器28最优选的是能够以连续方式测量液位的光学传感器。泵30可以是用于产生真空的任何合适的装置，但是优选蠕动泵、涡旋泵或叶片泵。微处理器38能够执行反馈控制，并优选PID控制。比例控制器40可以是用于比例控制系统10和/或外科手术装置36的任何合适的装置，但是优选足控制器。
系统10优选采用三种截然不同的方法控制抽吸：真空控制、抽吸控制和流动控制。这些方法在共同待审的申请序号为No.11/158,238的美国专利申请(于2005年6月21日提交)和共同待审的申请序号为No.11/158,259的美国专利申请(于2005年6月21日提交)中有更充分地描述，上述两个专利申请通常是被拥有的主题申请，并通过参考包括在此文中。
在这些方法的每个方法中，真空可以通过流体管道50、56和58提供给外科手术装置36和抽吸室26。抽吸室26用由外科手术装置36抽吸的液体42填充。液体42包括液体注入流体和抽吸的眼部组织。抽吸室26包括储存部分130和感测部分132。储存部分130具有比感测部分132更大的横截面面积。该储存部分130的横截面面积优选达到感测部分132的面积的7.5倍大，并最优选约为感测部分132的面积的7.5倍大。储存部分130和感测部分132流体相连。储存部分130和感测部分132之间的角度最优选约为90度。如图2中所见，抽吸室26如此定向使得储存部分130朝向外科手术箱100的顶部。
如图2和图3中所示，外科手术箱100具有主体102，该主体包括抽吸室26。为了清楚起见，未示出主体102的前侧流体密封的盖子。为了清楚起见，未示出主体102的后侧流体密封的夹紧板。端口108与流体管道50流体相连。入口110与抽吸室26的感测部分132和流体管道56流体相连。如上文所述，流体管道56通过端口34和流体管道58与外科手术装置36流体相连。入口112与抽吸室26的感测部分132和流体管道52流体相连。抽吸室26、端口32和34、流体管道52、54和56、端口108、入口110以及入口112优选整体模制到主体102中。
在手术过程中，真空供应到抽吸室26。液体42从外科手术装置36引导至抽吸室26。抽吸室26具有双重功能。这些功能之一是支持连续位置感测，从连续位置感测可以确定测量的流量。流量的测量可以从下面获得：
Q = A × ΔL Δt
其中Q是流量，A是感测部分132的横截面面积，ΔL是由液位传感器28测量的液位变化，Δt是时间变化。具有对抽吸室26中的液体42的位置的准确和精确的测量很关键。为了提高流动测量的灵敏度，与液位传感器28垂直的抽吸室26的横截面面积务必很小。这个功能由抽吸室26的感测部分132来完成。液体42经入口110进入抽吸室26的感测部分132。感测部分132的更小的横截面面积允许液位传感器28准确并精确地确定抽吸室26中的液位的变化。抽吸室26的另一个功能是在与收集袋端口32流体相连的收集袋(未示出)更换期间容纳附加的液体42以支持不间断的外科手术。如果在外科手术期间，有储存抽吸室26中的流体的需求存在(像收集袋更换期间的情况)，抽吸室26的储存部分130提供了大的横截面面积，该横截面面积可以提供用于流体储存的充足的体积。
在此本发明由例子进行说明，并且本领域的普通技术人员可以做出各种不同的修改。例如，与上文所述的抽吸室26相对，本发明可以被实施为具有储存部分103和感应部分132的外科手术箱的注入室26。
相信本发明的操作和结构将明显区别于以前的描述。尽管上面所示或所述的设备和方法作为优选实施例被赋予特征，但是在不脱离下面的权利要求中所限定的本发明主旨和范围的情况下，可以做各种改变和修改。

Claims (2)

1.一种外科手术箱，所述外科手术箱具有设置在其中的抽吸室，所述抽吸室(26)包括：
邻近于所述抽吸室的底部布置的液位感测部分(132)，所述感测部分可操作地连接到所述外壳手术箱的流体管路(56)并且具有第一横截面面积，所述流体管路用于接收外科手术抽吸流体，其中所述感测部分可操作地工作以在使用所述外科手术箱期间提供连续流体高度变化的准确和精确显示；
邻近于所述抽吸室的顶部布置的、与所述感测部分流体相连的、且具有比所述第一横截面面积大的第二横截面面积的储存部分(130)，其中所述储存部分可操作地工作以在更换收集袋期间提供所述外科抽吸流体的足够流体储存，所述收集袋与所述抽吸室流体连接；以及
其中所述感测部分设置在所述抽吸室(26)内，使得外科手术抽吸流体从所述流体管路(56)通过所述感测部分(132)可操作地首先进入所述抽吸室，并在进入所述储存部分(130)之前充分地填充所述感测部分(132)。
2.如权利要求1所述的外科手术箱，其中所述第二横截面面积约为所述第一横截面面积的7.5倍大。
CN2007800095870A 2006-03-20 2007-03-06 带有多个面积的流体室的外科手术箱 Active CN101405048B (zh)

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US11/384,702 2006-03-20
US11/384,702 US7604615B2 (en) 2006-03-20 2006-03-20 Surgical cassette with bubble separating structure
US11/491,630 US7594901B2 (en) 2005-06-21 2006-07-24 Surgical cassette with multi area fluid chamber
US11/491,630 2006-07-24
PCT/US2007/063380 WO2007109413A2 (en) 2006-03-20 2007-03-06 Surgical cassette with multi area fluid chamber

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CN101405048A CN101405048A (zh) 2009-04-08
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AU2007227166A1 (en) 2007-09-27
CA2641753C (en) 2014-01-07
EP1996269A4 (en) 2009-08-05
US20070049898A1 (en) 2007-03-01
TWI401068B (zh) 2013-07-11
EP1996251A2 (en) 2008-12-03
AU2007227166B2 (en) 2013-01-17
EP1996251A4 (en) 2009-07-29
US20070219494A1 (en) 2007-09-20
EP1996269B1 (en) 2010-09-08
KR20080111490A (ko) 2008-12-23
KR101367235B1 (ko) 2014-04-24
CY1111175T1 (el) 2015-06-11
AU2007227231B2 (en) 2013-05-23
CA2642729C (en) 2013-12-24
AR059966A1 (es) 2008-05-14
US7594901B2 (en) 2009-09-29
WO2007109413A2 (en) 2007-09-27
EP1996251B1 (en) 2011-04-13
TW200744555A (en) 2007-12-16
WO2007109383A3 (en) 2008-11-20
CA2642729A1 (en) 2007-09-27
CA2641753A1 (en) 2007-09-27
PL1996269T3 (pl) 2011-04-29
PL1996251T3 (pl) 2011-11-30
CN101405048A (zh) 2009-04-08
WO2007109413A3 (en) 2008-08-28
WO2007109383A2 (en) 2007-09-27
EP1996269A2 (en) 2008-12-03
AU2007227231A1 (en) 2007-09-27
AR059677A1 (es) 2008-04-23
US7604615B2 (en) 2009-10-20

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