公开(公告)号：US5357971A

公开(公告)日：1994-10-25

申请号：US207892

申请日：1994-03-07

申请人： Neil J. Sheehan ,  Scott R. Rouw ,  Robert T. Stone

发明人： Neil J. Sheehan ,  Scott R. Rouw ,  Robert T. Stone

IPC分类号： A61B5/08 ,  A61B5/083 ,  A61B5/097 ,  G01N33/00 ,  G01N33/497 ,  B01D13/00

CPC分类号： A61B5/0836 ,  G01N33/497 ,  G01N33/004

摘要： A noninvasive device and methods for measuring the end-tidal carbon monoxide concentration in a patient's breath, particularly newborn and premature infants. The patient's breath is monitored. An average carbon monoxide concentration is determined based on an average of discrete samples in a given time period. The ratio of the end-tidal portion of the breath flow sample is separately determined, preferably based on monitoring the level of carbon dioxide in the gas sample and identifying the carbon dioxide concentration levels corresponding to the end-tidal portion of the breath sample. The sensed carbon monoxide level is converted to the end-tidal carbon monoxide level by subtracting the ambient carbon monoxide level and dividing the remainder by the ratio of end-tidal breath to breath in the breath sample. An easy to use microcontroller-based device containing a carbon dioxide detector, a carbon monoxide detect and a pump for use in a hospital, home, physician's office or clinic by persons not requiring high skill and training is described. A replaceable filter unit made of a single tri-lumen PVC extrusion and a tube segment inter-connecting two of the lumens used to provide the consumable filtration material. The filtration material is interposed between the carbon dioxide sensor and the carbon monoxide sensor which are mounted inside the monitor housing. The filter unit also interfaces the canula for receiving the patient's breath sample and a hydrophobic filter between the patient and the carbon dioxide monitor. The filter unit is replaceable when the filtration medium is no longer effective or for use with different patients and may be disposable.

摘要翻译： 用于测量患者呼吸中的终端一氧化碳浓度的非侵入性装置和方法，特别是新生儿和早产儿。 监测患者的呼吸。 平均一氧化碳浓度基于给定时间段内的离散样品的平均值来确定。 优选基于监测气体样品中的二氧化碳水平并识别对应于呼吸样品的末端潮气部分的二氧化碳浓度水平，分别测定呼气流量样品的潮气部分的比例。 感测到的一氧化碳水平通过减去环境一氧化碳水平并将其余部分除以呼吸样本中的呼吸末端呼吸与呼吸的比例而转化为终潮一氧化碳水平。 描述了一种易于使用的基于微控制器的装置，其包含二氧化碳检测器，一氧化碳检测器和用于在医院，家庭，医生办公室或诊所中由不需要高技能和训练的人员使用的泵。 由单个三腔PVC挤出机制成的可替换的过滤器单元和用于提供消耗性过滤材料的两个腔室之间的管段相互连接。 过滤材料介于安装在监视器壳体内部的二氧化碳传感器和一氧化碳传感器之间。 过滤器单元还将套管接合以接收患者的呼吸样本和患者和二氧化碳监测器之间的疏水过滤器。 当过滤介质不再有效或与不同的患者一起使用时，过滤器单元是可更换的，并且可以是一次性的。

公开(公告)号：US5404885A

公开(公告)日：1995-04-11

申请号：US184379

申请日：1994-01-21

申请人： Neil J. Sheehan ,  Scott R. Rouw ,  Robert T. Stone

发明人： Neil J. Sheehan ,  Scott R. Rouw ,  Robert T. Stone

IPC分类号： A61B5/08 ,  A61B5/083 ,  A61B5/097 ,  G01N33/00 ,  G01N33/497

CPC分类号： A61B5/0836 ,  G01N33/497 ,  G01N33/004

摘要： A noninvasive device and methods for measuring the end-tidal carbon monoxide concentration in a patient's breath, particularly newborn and premature infants. The patient's breath is monitored. An average carbon monoxide concentration is determined based on an average of discrete samples in a given time period. The ratio of the end-tidal portion of the breath flow sample is separately determined, preferably based on monitoring the level of carbon dioxide in the gas sample and identifying the carbon dioxide concentration levels corresponding to the end-tidal portion of the breath sample. The sensed carbon monoxide level is converted to the end-tidal carbon monoxide level by subtracting the ambient carbon monoxide level and dividing the remainder by the ratio of end-tidal breath to breath in the breath sample. An easy to use microcontroller-based device containing a carbon dioxide detector, a carbon monoxide detect and a pump for use in a hospital, home, physician's office or clinic by persons not requiring high skill and training is described. A replaceable filter unit made of a single tri-lumen PVC extrusion and a tube segment inter-connecting two of the lumens used to provide the consumable filtration material. The filtration material is interposed between the carbon dioxide sensor and the carbon monoxide sensor which are mounted inside the monitor housing. The filter unit also interfaces the canula for receiving the patient's breath sample and a hydrophobic filter between the patient and the carbon dioxide monitor.

摘要翻译： 用于测量患者呼吸中的终端一氧化碳浓度的非侵入性装置和方法，特别是新生儿和早产儿。 监测患者的呼吸。 平均一氧化碳浓度基于给定时间段内的离散样品的平均值来确定。 优选基于监测气体样品中的二氧化碳水平并识别对应于呼吸样品的末端潮气部分的二氧化碳浓度水平，分别测定呼气流量样品的潮气部分的比例。 感测到的一氧化碳水平通过减去环境一氧化碳水平并将其余部分除以呼吸样本中的呼吸末端呼吸与呼吸的比例而转化为终潮一氧化碳水平。 描述了一种易于使用的基于微控制器的装置，其包含二氧化碳检测器，一氧化碳检测器和用于在医院，家庭，医生办公室或诊所中由不需要高技能和训练的人员使用的泵。 由单个三腔PVC挤出机制成的可替换的过滤器单元和用于提供消耗性过滤材料的两个腔室之间的管段相互连接。 过滤材料介于安装在监视器壳体内部的二氧化碳传感器和一氧化碳传感器之间。 过滤器单元还将套管接合以接收患者的呼吸样本和患者和二氧化碳监测器之间的疏水过滤器。

公开(公告)号：USD354808S

公开(公告)日：1995-01-24

申请号：US3880

申请日：1993-01-21

申请人： Neil J. Sheehan ,  Scott R. Rouw ,  Robert T. Stone

设计人： Neil J. Sheehan ,  Scott R. Rouw ,  Robert T. Stone