公开(公告)号：US08801918B2

公开(公告)日：2014-08-12

申请号：US12748918

申请日：2010-03-29

申请人： Wei Qin ,  Daniel S. Cheek ,  Christopher Hobot ,  Kelvin Bonnema ,  Randy Meyer ,  Douglas Dean Nippoldt ,  Vitally G. Sitko ,  Qingshan (Sam) Ye ,  Narayanan Ramamurthy

发明人： Wei Qin ,  Daniel S. Cheek ,  Christopher Hobot ,  Kelvin Bonnema ,  Randy Meyer ,  Douglas Dean Nippoldt ,  Vitally G. Sitko ,  Qingshan (Sam) Ye ,  Narayanan Ramamurthy

IPC分类号： G01N27/333 ,  G01N33/86 ,  A61M1/36

CPC分类号： G01N27/3335 ,  A61M1/3675 ,  G01N27/333 ,  G01N33/86

摘要： Methods and devices for point of care determination of heparin concentration in blood are described. Cartridges including protamine ion sensitive electrodes (ISEs) and reference electrodes and systems for automatically determining heparin concentration in the cartridges are provided. Some systems add blood to a protamine bolus sufficient to bind all heparin, leaving excess protamine. The excess protamine concentration can be determined by measuring the initial slope of the electrode potential rate of change, and comparing the slope to known protamine concentration slope values In some cartridges, an oscillating pressure source moves the blood-protamine mixture back and forth across the protamine ISE. Some systems also use a second blood sample having the heparin removed or degraded to create a blank reference sample. Protamine ISEs can include polyurethane polymer, DNNS ionophore, and NPOE plasticizer. The polyurethane may include hard segments and soft segments, where both hard and soft segments may include cyclic and straight chain aliphatic moieties having essentially no ester or ether groups. Some hard segments may include methylene diphenyl groups. Some reference electrodes have the same polymer, plasticizer, and ionophore as the measurement electrode, but with a different concentration of ionophore.

摘要翻译： 描述了血液中肝素浓度的护理点测定方法和装置。 提供了包括鱼精蛋白离子敏感电极（ISE）和用于自动确定药筒中肝素浓度的参比电极和系统的药盒。 一些系统将血液添加到足以结合所有肝素的鱼精蛋白推注物，留下过量的鱼精蛋白。 可以通过测量电极电位变化率的初始斜率，并将斜率与已知的精蛋白浓度斜率值进行比较来确定过量鱼精蛋白浓度。 在一些药筒中，振荡压力源通过鱼精蛋白ISE来回移动血液 - 鱼精蛋白混合物。 一些系统还使用除去或降解肝素以创建空白参考样品的第二血液样品。 鱼精蛋白ISE可以包括聚氨酯聚合物，DNNS离子载体和NPOE增塑剂。 聚氨酯可以包括硬链段和软链段，其中硬链段和软链段都可以包括基本上没有酯或醚基团的环状和直链脂族部分。 一些硬链段可以包括亚甲基二苯基。 一些参比电极与测量电极具有相同的聚合物，增塑剂和离子载体，但是具有不同浓度的离子载体。

公开(公告)号：US20100181210A1

公开(公告)日：2010-07-22

申请号：US12748918

申请日：2010-03-29

申请人： Wei Qin ,  Daniel S. Cheek ,  Christopher Hobot ,  Kelvin Bonnema ,  Randy Meyer ,  Douglas Dean Nippoldt ,  Vitally G. Sitko ,  Qingsham (Sam) Ye ,  Narayanan Ramamurthy

发明人： Wei Qin ,  Daniel S. Cheek ,  Christopher Hobot ,  Kelvin Bonnema ,  Randy Meyer ,  Douglas Dean Nippoldt ,  Vitally G. Sitko ,  Qingsham (Sam) Ye ,  Narayanan Ramamurthy

IPC分类号： G01N33/50 ,  G01N27/26

CPC分类号： G01N27/3335 ,  A61M1/3675 ,  G01N27/333 ,  G01N33/86

摘要： Methods and devices for point of care determination of heparin concentration in blood are described. Cartridges including protamine ion sensitive electrodes (ISEs) and reference electrodes and systems for automatically determining heparin concentration in the cartridges are provided. Some systems add blood to a protamine bolus sufficient to bind all heparin, leaving excess protamine. The excess protamine concentration can be determined by measuring the initial slope of the electrode potential rate of change, and comparing the slope to known protamine concentration slope values In some cartridges, an oscillating pressure source moves the blood-protamine mixture back and forth across the protamine ISE. Some systems also use a second blood sample having the heparin removed or degraded to create a blank reference sample. Protamine ISEs can include polyurethane polymer, DNNS ionophore, and NPOE plasticizer. The polyurethane may include hard segments and soft segments, where both hard and soft segments may include cyclic and straight chain aliphatic moieties having essentially no ester or ether groups. Some hard segments may include methylene diphenyl groups. Some reference electrodes have the same polymer, plasticizer, and ionophore as the measurement electrode, but with a different concentration of ionophore.

摘要翻译： 描述了血液中肝素浓度的护理点测定方法和装置。 提供了包括鱼精蛋白离子敏感电极（ISE）和用于自动确定药筒中肝素浓度的参比电极和系统的药盒。 一些系统将血液添加到足以结合所有肝素的鱼精蛋白推注物，留下过量的鱼精蛋白。 可以通过测量电极电位变化率的初始斜率，并将斜率与已知的精蛋白浓度斜率值进行比较来确定过量鱼精蛋白浓度。 在一些药筒中，振荡压力源通过鱼精蛋白ISE来回移动血液 - 鱼精蛋白混合物。 一些系统还使用除去或降解肝素以创建空白参考样品的第二血液样品。 鱼精蛋白ISE可以包括聚氨酯聚合物，DNNS离子载体和NPOE增塑剂。 聚氨酯可以包括硬链段和软链段，其中硬链段和软链段都可以包括基本上没有酯或醚基团的环状和直链脂族部分。 一些硬链段可以包括亚甲基二苯基。 一些参比电极与测量电极具有相同的聚合物，增塑剂和离子载体，但是具有不同浓度的离子载体。

公开(公告)号：US07699966B2

公开(公告)日：2010-04-20

申请号：US11126887

申请日：2005-05-11

申请人： Wei Qin ,  Daniel S. Cheek ,  Christopher Hobot ,  Kelvin Bonnema ,  Randy Meyer ,  Douglas Dean Nippoldt ,  Vitally G. Sitko ,  Qingshan (Sam) Ye ,  Narayanan Ramamurthy

发明人： Wei Qin ,  Daniel S. Cheek ,  Christopher Hobot ,  Kelvin Bonnema ,  Randy Meyer ,  Douglas Dean Nippoldt ,  Vitally G. Sitko ,  Qingshan (Sam) Ye ,  Narayanan Ramamurthy

IPC分类号： G01N27/333

CPC分类号： G01N27/3335 ,  A61M1/3675 ,  G01N27/333 ,  G01N33/86

摘要： Methods and devices for point of care determination of heparin concentration in blood are described. Cartridges including protamine ion sensitive electrodes (ISEs) and reference electrodes and systems for automatically determining heparin concentration in the cartridges are provided. Some systems add blood to a protamine bolus sufficient to bind all heparin, leaving excess protamine. The excess protamine concentration can be determined by measuring the initial slope of the electrode potential rate of change, and comparing the slope to known protamine concentration slope values In some cartridges, an oscillating pressure source moves the blood-protamine mixture back and forth across the protamine ISE. Some systems also use a second blood sample having the heparin removed or degraded to create a blank reference sample. Protamine ISEs can include polyurethane polymer, DNNS ionophore, and NPOE plasticizer. The polyurethane may include hard segments and soft segments, where both hard and soft segments may include cyclic and straight chain aliphatic moieties having essentially no ester or ether groups. Some hard segments may include methylene diphenyl groups. Some reference electrodes have the same polymer, plasticizer, and ionophore as the measurement electrode, but with a different concentration of ionophore.

摘要翻译： 描述了血液中肝素浓度的护理点测定方法和装置。 提供了包括鱼精蛋白离子敏感电极（ISE）和用于自动确定药筒中肝素浓度的参比电极和系统的药盒。 一些系统将血液添加到足以结合所有肝素的鱼精蛋白推注物，留下过量的鱼精蛋白。 过量的鱼精蛋白浓度可以通过测量电极电位变化率的初始斜率来确定，并将斜率与已知的鱼精蛋白浓度斜率值进行比较。在一些药筒中，振荡压力源将血 - 鱼精蛋白混合物来回移动穿过鱼精蛋白 ISE。 一些系统还使用除去或降解肝素以创建空白参考样品的第二血液样品。 鱼精蛋白ISE可以包括聚氨酯聚合物，DNNS离子载体和NPOE增塑剂。 聚氨酯可以包括硬链段和软链段，其中硬链段和软链段都可以包括基本上没有酯或醚基团的环状和直链脂族部分。 一些硬链段可以包括亚甲基二苯基。 一些参比电极与测量电极具有相同的聚合物，增塑剂和离子载体，但是具有不同浓度的离子载体。