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    • 54. 发明授权
    • Calorimetry systems and methods
    • 量热系统和方法
    • US06475158B1
    • 2002-11-05
    • US09694954
    • 2000-10-24
    • Joseph A. OrrScott A. KofoedKevin Durst
    • Joseph A. OrrScott A. KofoedKevin Durst
    • A61B508
    • A61B5/024A61B5/0002A61B5/0833A61B5/087
    • A calorimeter configured to determine a metabolic rate of an individual based on measurements of the individual's respiration. The calorimeter includes an inlet, a flow sensor, a mixing chamber, a gas sensor, and a calibrator. Each of these elements is located along a flow path through the calorimeter. The calibrator of the calorimeter includes a fan that is configured to force calibration gases, such as room air, through or past the gas sensor. A cardiac rate monitor is associated with a processor of the calorimeter. The processor is configured to substantially simultaneously determine and establish a relationship between the cardiac rate of the individual and the measured respiratory parameters or the metabolic rate of the individual. Data representative of this relationship may be communicated to a processor or memory of a portable calorimeter to be subsequently used by the individual. The portable calorimeter, which can be worn by the individual, includes a cardiac rate monitor that measures the cardiac rate of the individual and communicates data representative of the individual's cardiac rate to the processor, which then determines the metabolic rate of the individual based on relationship data obtained from the respiratory-based calorimeter. Methods of calibrating and using the calorimeters are also disclosed.
    • 配置成基于个体呼吸的测量来确定个体的代谢率的量热计。 量热计包括入口,流量传感器,混合室,气体传感器和校准器。 这些元件中的每一个沿着通过热量计的流动路径定位。 量热计的校准器包括被配置为迫使校准气体(例如室内空气)通过或经过气体传感器的风扇。 心率监测器与量热计的处理器相关联。 处理器被配置为基本上同时确定和建立个体的心率和测量的呼吸参数或个体的代谢率之间的关系。 表示该关系的数据可以传送到随后由个人使用的便携式量热计的处理器或存储器。 便携式量热计可以由个人佩戴,包括心率监测器,其测量个体的心率,并将表示个体心率的数据传达给处理器,然后处理器基于关系确定个体的代谢率 从呼吸型量热仪获得的数据。 还公开了校准和使用热量计的方法。
    • 56. 发明授权
    • Bi-directional partial re-breathing method
    • 双向局部再呼吸法
    • US06210342B1
    • 2001-04-03
    • US09391165
    • 1999-09-08
    • Kai KückJoseph A. Orr
    • Kai KückJoseph A. Orr
    • A61B502
    • A61B5/0836A61B5/029
    • A re-breathing method for determining pulmonary capillary blood flow that accounts for changes in the cardiac output or in the carbon dioxide content of the venous blood of a patient. The carbon dioxide elimination and partial pressure of end tidal carbon dioxide of the patient are non-invasively measured prior to re-breathing, during re-breathing, and after re-breathing. The carbon dioxide elimination and the carbon dioxide content of the alveolar blood of the patient at each of the before, during, and after re-breathing phases are then used to calculate the pulmonary capillary blood flow of the patient. A rate of change of carbon dioxide content of the venous blood of the patient may also be calculated and employed in calculating the pulmonary capillary blood flow of the patient.
    • 用于确定肺毛细血管血流的再呼吸方法,其考虑了心输出量或患者静脉血二氧化碳含量的变化。 患者的二氧化碳消除和部分潮气二氧化碳的分压在呼吸前,再呼吸期间和再次呼吸之后都是非侵入性的。 然后使用在再呼吸阶段之前,期间和之后患者的二氧化碳消除和患者肺泡血液中的二氧化碳含量来计算患者的肺毛细血管血流量。 也可以计算患者的静脉血二氧化碳含量的变化率,并用于计算患者的肺毛细血管血流量。