CN108333133A - 具有多个uv传感器的过氧化氢消毒器 - Google Patents
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Abstract
本发明题为“具有多个UV传感器的过氧化氢消毒器”。消毒通过以下步骤来执行:将消毒剂流体流通过入口吸收到消毒室中,发射紫外光到所述室中,在设置在相应位置处的多个紫外光检测器中接收紫外光;以及响应于来自检测器的信号而调节消毒剂流体流以在室中达到消毒剂流体的期望水平。
Description
版权声明
本专利文献的公开内容的一部分包括受版权保护的材料。版权所有者不反对任何人照专利和商标办公室专利文件或记录原样复制本专利文件或专利公开内容,但除此之外版权所有者保留所有相关的版权。
背景技术
1.技术领域
本发明涉及通过确定流体的化学特性或物理特性来分析流体的系统。更具体地,本发明涉及确定消毒室中的气体的浓度。
2.相关领域的描述
用于外科设备的低温消毒的标准方法中的一者为在消毒室中使用过氧化氢(双氧水)蒸气与低温等离子体的组合。在消毒过程期间,随着过氧化氢的消耗并且随着向室中添加所需的过氧化氢来测量过氧化氢浓度以将浓度保持在令人满意的水平。用于测量过氧化氢浓度的本方法使用透射穿过该室的紫外光源,并且所接收的紫外光使用位于远离光源的单个紫外光检测器来测量。所接收的紫外光的水平用于计算总的过氧化氢浓度读数。
用于测量消毒剂浓度的一个布置结构在授予Olson等人的美国专利7,880,887中提出。消毒室中消毒剂的浓度的测量通过使用光源、从光源接收未透射穿过消毒室的光的第一检测器和从光源接收透射穿过消毒室的光的检测器来提供。该光包含已知被消毒剂吸收的波长。控制器接收并处理从两个检测器接收的信号,以取消光源的输出的变化并随后应用修改的比尔-朗伯定律来确定消毒剂气体的浓度。
实际上,消毒剂诸如过氧化氢的浓度可在所述室内变化,尤其当具有狭窄管腔诸如导管的消毒设备限制消毒剂蒸气的扩散时。所述室中可有区域由于此类流限制而暴露于较高或较低浓度的过氧化氢。因此,上文所指的总读数可无法准确地描述所述室内的浓度分布。
本领域已认识到,在消毒室的不同区域中的测量可提高消毒剂气体浓度读数的可靠性。例如,授予Prieve等人的美国专利6,269,680提议包括可移动的气体电池,该可移动的气体电池可围绕消毒室运动,使得可在消毒室内的各个位置处进行过氧化氢的浓度的测量。可移动的气体电池的两端连接至紫外灯和具有光纤的检测器。
发明内容
本发明的实施方案使用分布在消毒室内的多个紫外(UV)检测器。检测器可为相对较小的(硬币大小的),并且可被构造成将它们的读数无线传输至中央处理器。此外,双波长光源而不是单个UV光源用于充分利用差分吸收。为进一步提高浓度读数的准确性,光源可为脉冲式的,这改善了信噪比。
根据本发明的实施方案提供了消毒室,该消毒室具有用于将消毒剂流体流吸收到室中的入口、被布置成将紫外光引导到该室中的紫外光发射器、设置在相应位置用于接收紫外光的多个紫外光检测器、和用于响应于来自检测器的信号而调节消毒剂流体流以在所述室中达到消毒剂流体的期望水平的控制器。
根据设备的一个方面,发射器以第一波长和第二波长发射光,该第一波长被消毒剂流体吸收,该第二波长被消毒剂流体较不良好地吸收。
根据设备的另一方面,消毒剂流体为过氧化氢,第一波长为280nm并且第二波长为370nm。
根据设备的另一方面,发射器包括多个发射器,该多个发射器具有被布置成将光发射引导到相应检测器的光学器件。
根据设备的另一方面,所述室被保持在低于大气压处。
根据设备的附加方面,发射器包括多个发光二极管,该多个发光二极管被构造成以相应频率发射。
根据设备的另一方面,发射器包括多个发光二极管,该多个发光二极管被构造成在不同时间间隔以相同频率发射。
根据本发明的实施方案进一步提供了方法,该方法通过以下步骤来执行:将消毒剂流体流通过入口吸收到室中、发射紫外光到所述室中、在设置在相应位置处的多个紫外光检测器中接收紫外以及响应于来自检测器的信号而调节消毒剂流体流以在所述室中达到消毒剂流体的期望水平。
附图说明
为更好地理解本发明,就本发明的详细说明以举例的方式做出参考,该详细说明应结合以下附图来阅读,其中类似的元件用类似的附图标号来表示,并且其中:
图1为根据本发明的实施方案的消毒室的示意图;
图2是根据本发明的实施方案的图1所示的室的部件的电气原理图;并且
图3为根据本发明的另选实施方案的消毒室的示意图。
具体实施方式
在下文的描述中,列出了许多具体细节,以便提供对本发明的各种原理的全面理解。然而,对于本领域的技术人员而言将显而易见的是,并非所有这些细节都是实践本发明所必需的。在这种情况下,未详细示出熟知的电路、控制逻辑部件以及用于常规算法和过程的计算机程序指令的细节,以免不必要地使一般概念模糊不清。
以引用方式并入本文的文献将被视作本申请的整体部分,不同的是,就任何术语在这些并入文件中以与本说明书中明确或隐含地作出的定义矛盾的方式定义而言,应仅考虑本说明书中的定义。
现在转到附图,参考图1,其为根据本发明的实施方案的消毒室10的示意图。室10具有用于物体14通过的密封门12,该物体可为分类的外科器械等。过氧化氢通过具有调节器或阀门18的入口16被吸收到室10中。门20被提供用于吸收空气,并且气体通过门22离开室。室10被保持在低于大气压处,通常为0.5托,并且具有紫外光源24,该紫外光源将紫外光透射穿过该室,该紫外光在多个壁上的紫外光检测器26和内部的紫外光检测器28中被接收。具有与紫外光源24相关联的适当UV(紫外)透镜的光学器件30被构造成照亮所有检测器26,28。图1中的检测器26,28的分布是以举例的方式而并非为限制性的。检测器26,28可分布在室中,使得所述测量最佳地反映正被消毒的物体处的过氧化氢的浓度。检测器无需以任何特定的次序分布,并且甚至可广泛地散布在室的周围和室内,面向不同的方向。
紫外光源24从控制器42接收命令信号以及从检测器26,28接收读数。阀门18由控制器42响应于读数而调节。阀门18调节过氧化氢的流入,以便在室10内达到过氧化氢的期望的最佳水平(通常为95%的浓度)。一旦达到最佳水平,则在一些实施方案中可停止流入,并且所述室保持在静止状态。
继续参见图1并且参见图2,其是根据本发明的实施方案的室10的部件的电气原理图。紫外光源24被实现为两个并联的发光二极管32,34,该两个发光二极管均由控制器36提供。二极管32,34与电阻器38,40串联,并且分别以280nm和370nm发射。二极管能够以相应频率同时发射,或在不同时间间隔以相同频率发射。戈泽尔算法可用于检测来自二极管32,34的信号。双波长紫外光谱的技术例如从美国专利6,269,680得知,该专利以引用方式并入本文。在图2所示的电路中,二极管34作为用于补偿电路中的内部变化的参考,而二极管32以被过氧化氢蒸气强效吸收的波长来发射。
在本领域中已知的多个其它紫外光发射器可用于紫外光源24,例如具有约254nm光谱峰的圆柱形低压汞UV发射器。此类发射器在美国专利申请公布2006/0222576中被提出,该专利申请以引用方式并入本文。此类光源的其它示例包括低压汞蒸气灯、氘灯、氙灯、发光二极管和激光二极管。一般来讲,所有这些都不太方便或比上述双发光二极管构造更昂贵。
检测器26,28被实现为跨电阻器46的电荷耦合的检测器44。来自检测器44的信号在控制器36中被接收,并被收发器48传送至远程部位,诸如处理器(未示出),其中应用了信号处理技术,包括模数转换和傅立叶分析,傅立叶分析包括上述戈泽尔算法。
第一另选实施方案。
现参见图3,其为根据本发明的实施方案的根据本发明的另选实施方案的消毒室10的示意图。在该实施方案中,具有多个紫外光源50,该多个紫外光源具有将紫外光朝向相应检测器26,28引导的光学器件52。检测器26,28的光学器件可包括凸透镜。位于光源50和检测器26,28之间的光路由虚线指示。
本领域技术人员应当理解,本发明不限于上文具体示出和描述的内容。相反,本发明的范围包括上文所述各种特征的组合与子组合两者,以及本领域的技术人员在阅读上述说明书时可想到的未在现有技术范围内的上述各种特征的变型和修改。
Claims (15)
1.一种设备,包括:
消毒室,所述消毒室具有用于将消毒剂流体流吸收到所述室中的入口;
紫外光发射器,所述紫外光发射器被布置成将紫外光引导到所述室中;
多个紫外光检测器,所述多个紫外光检测器被设置在相应位置处并接收所述紫外光;和
控制器,所述控制器用于响应于来自所述检测器的信号而调节所述消毒剂流体流以在所述室中达到所述消毒剂流体的期望水平。
2.根据权利要求1所述的设备,其特征在于,所述发射器以第一波长和第二波长发射光,所述第一波长被所述消毒剂流体吸收,所述第二波长被所述消毒剂流体较不良好地吸收。
3.根据权利要求2所述的设备,其特征在于,所述消毒剂流体为过氧化氢,所述第一波长为280nm并且所述第二波长为370nm。
4.根据权利要求1所述的设备,其特征在于,所述发射器包括多个发射器,所述多个发射器具有被布置成将光发射引导到相应检测器的光学器件。
5.根据权利要求1所述的设备,其特征在于,所述室被保持在低于大气压处。
6.根据权利要求1所述的设备,其特征在于,所述发射器包括多个发光二极管,所述多个发光二极管被构造成以相应频率发射。
7.根据权利要求1所述的设备,其特征在于,所述发射器包括多个发光二极管,所述多个发光二极管被构造成在不同时间间隔以相同频率发射。
8.一种方法,包括以下步骤:
将消毒剂流体流通过入口吸收到消毒室中;
发射紫外光到所述室中;
在设置在相应位置处的多个紫外光检测器中接收所述紫外光;以及
响应于来自所述检测器的信号而调节所述消毒剂流体流以在所述室中达到所述消毒剂流体的期望水平。
9.根据权利要求8所述的方法,其特征在于,发射紫外光包括以第一波长和第二波长发射所述紫外光,所述第一波长被所述消毒剂流体吸收,所述第二波长被所述消毒剂流体较不良好地吸收。
10.根据权利要求9所述的方法,其特征在于,所述消毒剂流体为过氧化氢,所述第一波长为280nm并且所述第二波长为370nm。
11.根据权利要求8所述的方法,其特征在于,使用多个发射器来执行发射紫外光,所述多个发射器具有被布置成将光发射引导到相应检测器的光学器件。
12.根据权利要求8所述的方法,其特征在于,还包括将所述室保持在低于大气压处。
13.根据权利要求8所述的方法,其特征在于,发射紫外光通过使用多个发光二极管以相应频率发射所述紫外光来执行。
14.根据权利要求8所述的方法,其特征在于,发射紫外光通过使用多个发光二极管在不同时间间隔以相同频率发射所述紫外光来执行。
15.根据权利要求8所述的方法,其特征在于,调节包括停止所述流以使所述室保持在静止状态。
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US15/399671 | 2017-01-05 | ||
US15/399,671 US10610610B2 (en) | 2017-01-05 | 2017-01-05 | Hydrogen peroxide sterilizer with multiple UV sensors |
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US (1) | US10610610B2 (zh) |
EP (1) | EP3345628A1 (zh) |
JP (1) | JP2018109630A (zh) |
CN (1) | CN108333133A (zh) |
AU (1) | AU2017279681A1 (zh) |
CA (1) | CA2990663A1 (zh) |
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WO2023034320A1 (en) * | 2021-09-01 | 2023-03-09 | Cardioquip, Llc | System and method for in-line optical sensing of hydrogen peroxide |
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- 2017-12-25 RU RU2017145557A patent/RU2017145557A/ru not_active Application Discontinuation
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RU2017145557A (ru) | 2019-06-25 |
AU2017279681A1 (en) | 2018-07-19 |
US10610610B2 (en) | 2020-04-07 |
US20180185532A1 (en) | 2018-07-05 |
IL256422A (en) | 2018-01-31 |
EP3345628A1 (en) | 2018-07-11 |
CA2990663A1 (en) | 2018-07-05 |
JP2018109630A (ja) | 2018-07-12 |
IL256422B (en) | 2020-10-29 |
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