JP2005507298A5 - - Google Patents
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- JP2005507298A5 JP2005507298A5 JP2003541424A JP2003541424A JP2005507298A5 JP 2005507298 A5 JP2005507298 A5 JP 2005507298A5 JP 2003541424 A JP2003541424 A JP 2003541424A JP 2003541424 A JP2003541424 A JP 2003541424A JP 2005507298 A5 JP2005507298 A5 JP 2005507298A5
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- 210000004369 Blood Anatomy 0.000 claims 80
- 239000008280 blood Substances 0.000 claims 80
- 210000001519 tissues Anatomy 0.000 claims 38
- 230000036772 blood pressure Effects 0.000 claims 37
- 239000000523 sample Substances 0.000 claims 37
- 238000002835 absorbance Methods 0.000 claims 23
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 16
- 229910052760 oxygen Inorganic materials 0.000 claims 16
- 239000001301 oxygen Substances 0.000 claims 16
- 239000012503 blood component Substances 0.000 claims 15
- 230000000747 cardiac effect Effects 0.000 claims 15
- 230000001939 inductive effect Effects 0.000 claims 8
- 230000035507 absorption Effects 0.000 claims 7
- 238000010521 absorption reaction Methods 0.000 claims 6
- 102000001554 Hemoglobins Human genes 0.000 claims 5
- 108010054147 Hemoglobins Proteins 0.000 claims 5
- 239000012491 analyte Substances 0.000 claims 4
- 230000001902 propagating Effects 0.000 claims 4
- 238000000034 method Methods 0.000 claims 3
- 230000001934 delay Effects 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 210000001367 Arteries Anatomy 0.000 claims 1
- 206010006322 Breath holding Diseases 0.000 claims 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N D-Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims 1
- 210000003462 Veins Anatomy 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000008103 glucose Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
Claims (46)
第一の波長を有する輻射を放出する第一の輻射エミッタ,および患者の血液の輻射経路長を通過して吸収を受けた後に,前記輻射を受け取る第一の輻射検出器を有する組織プローブを用意する工程と,
前記第一の波長の輻射を前記患者の血液を通過するように伝搬させ,前記患者の血液の通過後の前記輻射を検出することにより,前記患者の血液の吸収度を測定する工程と,
前記経路の多数を与えるべく,前記組織プローブの前記経路長を変化させるために,重力により前記患者の血液容量を変化させる工程と,
前記多数の経路長のぞれぞれで,前記患者の血液の吸収度を測定する工程と,
前記測定した吸収度に基づいて血液成分の濃度を決定する工程と,
を含む方法。 A non-invasive method for determining the concentration of blood components,
A first radiation emitter that emits radiation having a first wavelength, and a tissue probe having a first radiation detector that receives the radiation after being absorbed through the radiation path length of the patient's blood are provided. A process of
Measuring the absorbance of the patient's blood by propagating the radiation of the first wavelength through the patient's blood and detecting the radiation after passing through the patient's blood;
Changing the patient's blood volume by gravity to change the path length of the tissue probe to provide a plurality of the paths;
Measuring the blood absorption of the patient at each of the plurality of path lengths;
Determining a concentration of a blood component based on the measured absorbance;
Including methods.
請求項1に記載の方法。 Providing the tissue probe comprises: a first radiation emitter that emits first radiation having a first wavelength; a second radiation emitter that emits second radiation having a second wavelength; and Providing a tissue probe having first and second radiation detectors for receiving the first and second radiation, respectively, after absorption through the radiation path length of the patient's blood; Measuring the absorbance comprises measuring the absorbance at the first and second wavelengths;
The method of claim 1.
第一の波長を有する第一の輻射を放出する第一の輻射エミッタ,および患者の血液の第一の輻射経路長を通過して吸収を受けた後に,第一の輻射を受け取る第一の輻射検出器を有する第一の組織プローブであって,第一のパルス波振幅および第一のパルス遅延をさらに測定するところの第一の組織プローブを用意する工程と,
第二の波長を有する第二の輻射を放出する第二の輻射エミッタ,および患者の血液の第二の輻射経路長を通過して吸収を受けた後に,第二の輻射を受け取る第二の輻射検出器を有する第二の組織プローブであって,第二のパルス波振幅および第二のパルス遅延をさらに測定するところの第二の組織プローブを用意する工程と,
前記第一の組織プローブを,前記患者の第一の体の位置の近傍に配置する工程と,
前記第二の組織プローブを,前記患者の第二の体の位置の近傍に配置する工程と,
前記第一の体の位置で,患者の血液を通過するように,前記第一の輻射を放出することにより,患者の血液の第一の吸収度を測定する工程と,
前記第二の体の位置で,患者の血液を通過するように,前記第二の輻射を放出することにより,患者の血液の第二の吸収度を測定する工程と,
前記第一の組織プローブにより,前記第一のパルス波振幅および前記第一のパルス遅延を前記第一の体の位置で,ならびに前記第二の組織プローブにより,前記第二のパルス波振幅および前記第二のパルス遅延を前記第二の体の位置で,実質的に同時に測定する工程と,
前記第一および第二の吸収度,前記第一および第二のパルス波振幅,ならびに前記第一および第二のパルス遅延を使用して,少なくとも第一の心臓特性を決定する工程と,
を含む方法。 A non-invasive method for determining a physiological parameter of a patient, comprising:
A first radiation emitter that emits first radiation having a first wavelength, and a first radiation that receives the first radiation after being absorbed through a first radiation path length of the patient's blood; Providing a first tissue probe having a detector, wherein the first tissue probe further measures the first pulse wave amplitude and the first pulse delay;
A second radiation emitter that emits a second radiation having a second wavelength and a second radiation that receives the second radiation after being absorbed through a second radiation path length of the patient's blood; Providing a second tissue probe having a detector, wherein the second tissue probe further measures a second pulse wave amplitude and a second pulse delay;
Placing the first tissue probe proximate to the position of the first body of the patient;
Positioning the second tissue probe proximate to the position of the patient's second body;
Measuring a first absorbance of the patient's blood by emitting the first radiation to pass through the patient's blood at the location of the first body;
Measuring a second absorbance of the patient's blood by emitting the second radiation to pass through the patient's blood at the second body location;
With the first tissue probe, the first pulse wave amplitude and the first pulse delay at the position of the first body, and with the second tissue probe, the second pulse wave amplitude and the Measuring a second pulse delay at the position of the second body substantially simultaneously;
Determining at least a first cardiac characteristic using the first and second absorbances, the first and second pulse wave amplitudes, and the first and second pulse delays;
Including methods.
第一の波長を有する第一の輻射を放出する第一の輻射エミッタ,および患者の血液の第一の輻射経路長を通過して吸収を受けた後に,第一の輻射を受け取る第一の輻射検出器を有する第一の組織プローブを用意する工程と,
第二の波長を有する第二の輻射を放出する第二の輻射エミッタ,および患者の血液の第二の輻射経路長を通過して吸収を受けた後に,第二の輻射を受け取る第二の輻射検出器を有する第二の組織プローブを用意する工程と,
前記第一の組織プローブを,前記患者の第一の体の位置の近傍に配置する工程と,
前記第二の組織プローブを,前記患者の第二の体の位置の近傍に配置する工程と,
前記第一および第二の体の位置で,血液容量および血圧を変化させる工程と,
前記血液容量および血圧が前記第一の体の位置で変化したとき,前記第一の体の位置で,前記患者の血液の第一の吸収度を測定する工程と,
前記血液容量および血圧が前記第二の体の位置で変化したとき,前記第二の体の位置で,前記患者の血液の第二の吸収度を測定する工程と,
前記第一および第二の吸収度に基づき血液成分の濃度を決定する工程と,
を含む方法。 A non-invasive method for determining the concentration of a blood component in a patient,
A first radiation emitter that emits first radiation having a first wavelength, and a first radiation that receives the first radiation after being absorbed through a first radiation path length of the patient's blood; Providing a first tissue probe having a detector;
A second radiation emitter that emits a second radiation having a second wavelength and a second radiation that receives the second radiation after being absorbed through a second radiation path length of the patient's blood; Providing a second tissue probe having a detector;
Placing the first tissue probe proximate to the position of the first body of the patient;
Positioning the second tissue probe proximate to the position of the patient's second body;
Changing blood volume and blood pressure at the first and second body locations;
Measuring the first absorbency of the patient's blood at the first body position when the blood volume and blood pressure change at the first body position;
Measuring the second absorbency of the patient's blood at the second body position when the blood volume and blood pressure change at the second body position;
Determining a concentration of a blood component based on the first and second absorbances;
Including methods.
第一の波長を有する第一の輻射を放出する第一の輻射エミッタ,および患者の血液の第一の輻射経路長を通過して吸収を受けた後に,第一の輻射を受け取る第一の輻射検出器を有する第一の組織プローブを用意する工程と,
第二の波長を有する第二の輻射を放出する第二の輻射エミッタ,および患者の血液の第二の輻射経路長を通過して吸収した後に,第二の輻射を受け取る第二の輻射検出器を有する第二の組織プローブを用意する工程と,
前記第一の組織プローブを,前記患者の第一の体の位置の近傍に配置する工程と,
前記第二の組織プローブを,前記患者の第二の体の位置の近傍に配置する工程であって,前記第二の体の位置が前記第一の体の位置から離れているところの,配置工程と,
前記第一および第二の体の位置で,患者の血液容量および血圧を変化させる工程と,
前記血液容量および血圧が前記第一の体の位置で変化したとき,患者の血液を通過するように前記第一の輻射を放出することにより,患者の血液の第一の吸収度を前記第一の体の位置で測定する工程と,
前記血液容量および血圧が前記第二の体の位置で変化したとき,患者の血液を通過するように前記第二の輻射を放出することにより,患者の血液の第二の吸収度を前記第二の体の位置で測定する工程と,
前記第一および第二の吸収度を比較することにより,前記第一の体の位置への,第一の流量波および第一のパルス遅延の第一の到達時間,ならびに前記第二の体の位置への,第二の流量波および第二のパルス遅延の第二の到達時間を決定する工程と,
前記第一の流量波および前記第一のパルス遅延の前記第一の到達時間,ならびに前記第二の流量波および前記第二のパルス遅延の前記第二の到達時間に基づき少なくとも第一の心臓特性を決定する工程と,
を含む方法。 A non-invasive method for determining a physiological parameter of a patient, comprising:
A first radiation emitter that emits first radiation having a first wavelength, and a first radiation that receives the first radiation after being absorbed through a first radiation path length of the patient's blood; Providing a first tissue probe having a detector;
A second radiation emitter that emits second radiation having a second wavelength, and a second radiation detector that receives the second radiation after absorbing through a second radiation path length of the patient's blood Providing a second tissue probe having:
Placing the first tissue probe proximate to the position of the first body of the patient;
Disposing the second tissue probe in the vicinity of the position of the second body of the patient, wherein the position of the second body is away from the position of the first body Process,
Changing the patient's blood volume and blood pressure at the first and second body locations;
When the blood volume and blood pressure change at the position of the first body, the first radiation is emitted so as to pass through the patient's blood, thereby reducing the first absorbency of the patient's blood. Measuring at the position of the body,
When the blood volume and blood pressure change at the position of the second body, the second radiation is emitted so as to pass through the patient's blood, thereby reducing the second absorbency of the patient's blood. Measuring at the position of the body,
By comparing the first and second absorptions, the first arrival time of the first flow wave and the first pulse delay to the position of the first body, and the second body Determining a second arrival time of the second flow wave and the second pulse delay to the position;
At least a first cardiac characteristic based on the first arrival time of the first flow wave and the first pulse delay and the second arrival time of the second flow wave and the second pulse delay A process of determining
Including methods.
動脈血および静脈血の吸収度を測定する工程と,
動脈および静脈の酸素飽和度を決定する工程と,
前記動脈および静脈飽和度を使用して,ヘモグロビンの吸収度を取り除くことによりベース吸収度を決定する工程と,
前記ベース吸収度に基づいて血液成分の濃度を決定する工程と,
を含む方法。 A non-invasive method for determining the concentration of blood components,
Measuring the absorption of arterial and venous blood;
Determining arterial and venous oxygen saturation;
Using the arterial and venous saturation to determine the base absorbency by removing the absorbency of hemoglobin;
Determining a concentration of a blood component based on the base absorbance;
Including methods.
複数の波長をもつ輻射を放出する輻射エミッタ,患者の血液を通過して吸収を受けた後に,前記輻射を受け取る輻射検出器,および基準分析対象の濃度を含み,フィルム吸収度を有する分析対象フィルムを有する組織プローブを用意する工程と,
該組織プローブを患者の第一の体の位置に配置する工程と,
患者の心臓に対して前記第一の体の位置を上下動させることにより,前記第一の体の位置で,患者の血液容量を変更する工程と,
複数の波長で前記輻射を放出することにより,前記第一の体の位置で,患者の血液の吸収度を測定し,複数の吸収度値を与える工程と,
患者の血液における化学分析対象の相対濃度を決定するために,前記吸収度値を前記フィルム吸収度と比較する工程と,
を含む方法。 A non-invasive method for determining the concentration of a chemical analyte in a patient's blood,
A radiation emitter that emits radiation having a plurality of wavelengths; a radiation detector that receives the radiation after passing through a patient's blood; and an analyte film having a film absorbance that includes a concentration of a reference analyte Providing a tissue probe having:
Placing the tissue probe at a location on a patient's first body;
Changing the patient's blood volume at the position of the first body by moving the position of the first body up and down relative to the patient's heart;
Measuring the absorbance of the patient's blood at the location of the first body by emitting the radiation at a plurality of wavelengths and providing a plurality of absorbance values;
Comparing the absorbance value with the film absorbance to determine the relative concentration of the chemical analyte in the patient's blood;
Including methods.
第一の波長を有する第一の輻射を放出する第一の輻射エミッタ,および患者の血液の第一の輻射経路長を通過して吸収を受けた後に,前記第一の輻射を受け取る第一の輻射検出器を有する第一の組織プローブであって,少なくとも第一のパルス波速度および第一のパルス遅延をさらに測定するところの第一の組織プローブを用意する工程と,
第二の波長を有する第一の輻射を放出する第二の輻射エミッタ,および患者の血液の第二の輻射経路長を通過して吸収を受けた後に,前記第二の輻射を受け取る第二の輻射検出器を有する第二の組織プローブであって,少なくとも第二のパルス波速度および第二のパルス遅延をさらに測定するところの第二の組織プローブを用意する工程と,
前記第一の組織プローブを,患者の第一の先端部近傍に配置する工程と,
前記第二の組織プローブを,患者の第二の先端部近傍に配置する工程と,
患者の血圧を測定する工程と,
前記第一の先端分での第一のパルス波速度を,前記第一の組織プローブで測定する工程と,
前記第二の先端分での第二のパルス波速度を,前記第二の組織プローブで測定する工程と,
ベースライン酸素濃度を決定するために,少なくとも前記第一の組織プローブで酸素濃度を測定する工程と,
前記第一および第二のパルス波速度の比を使用して流量波速度を決定する工程と,
前記流量波速度を使用して少なくとも第一の心拍出量を計算する工程と,
を含む方法。 A non-invasive method for determining a patient's heart characteristics,
A first radiation emitter that emits first radiation having a first wavelength and a first radiation receiving the first radiation after being absorbed through a first radiation path length of the patient's blood; Providing a first tissue probe having a radiation detector, wherein the first tissue probe further measures at least a first pulse wave velocity and a first pulse delay;
A second radiation emitter emitting first radiation having a second wavelength and a second radiation receiving the second radiation after being absorbed through a second radiation path length of the patient's blood; Providing a second tissue probe having a radiation detector, wherein the second tissue probe further measures at least a second pulse wave velocity and a second pulse delay;
Placing the first tissue probe near a first tip of a patient;
Placing the second tissue probe near the second tip of the patient;
Measuring the patient's blood pressure;
Measuring a first pulse wave velocity at the first tip with the first tissue probe;
Measuring a second pulse wave velocity at the second tip with the second tissue probe;
Measuring the oxygen concentration with at least the first tissue probe to determine a baseline oxygen concentration;
Determining a flow wave velocity using a ratio of the first and second pulse wave velocities;
Calculating at least a first cardiac output using the flow wave velocity;
Including methods.
第一の血圧での,患者の第一の先端部における第一のパルス波速度を測定する工程と,
前記第一の先端部で第一の血圧変化を誘導する工程と,
第二の血圧での,前記第一の先端部における第二のパルス波速度を測定する工程と,
前記第一および第二のパルス波速度の少なくともひとつの比と,前記第一および第二の血圧間の流体圧差を使用して血圧を計算する工程と,
を含む方法。 A non-invasive method for determining a patient's blood pressure,
Measuring a first pulse wave velocity at a first tip of a patient at a first blood pressure;
Inducing a first blood pressure change at the first tip;
Measuring a second pulse wave velocity at the first tip at a second blood pressure;
Calculating a blood pressure using at least one ratio of the first and second pulse wave velocities and a fluid pressure difference between the first and second blood pressures;
Including methods.
血液パルス遅延を測定するための,第一および第二の組織プローブを用意する工程と,
前記第一の組織プローブを患者の第一の先端部に配置する工程と,
前記第二の組織プローブを患者の第二の先端部に配置する工程と,
第一の血圧での,前記第一の先端部における第一の血液パルス遅延を測定する工程と,
患者の心臓に対して,前記第一の先端部の高さを変化させることにより,第二の血圧を形成するために,前記第一の先端部に第一の血圧変化を誘導する工程と,
前記第二の血圧での,前記第一の先端部における第二の血液パルス遅延を測定する工程と,
第三の血圧での,前記第二の先端分における第三の血液パルス遅延を測定する工程と,
前記患者の心臓に対して,前記第二の先端部の高さを変化させることにより,第四の血圧を形成するために,前記第二の先端部に第二の血圧変化を誘導する工程と,
前記第四の血圧での,前記第二の先端部における第四の血液パルス遅延を測定する工程と,
前記第一および第二の血圧を比較することにより,第一の圧力差を決定する工程と,
前記第二および第四の血圧を比較することにより,第二の圧力差を決定する工程と,
前記第一,第二,第三および第四の血液パルス遅延の比,ならびに前記第一および第二の圧力差を使用して患者の血圧を決定する工程と,
を含む方法。 A non-invasive method for determining a patient's blood pressure,
Providing first and second tissue probes for measuring blood pulse delay;
Placing the first tissue probe at a first tip of a patient;
Placing the second tissue probe at a second tip of the patient;
Measuring a first blood pulse delay at the first tip at a first blood pressure;
Inducing a first blood pressure change in the first tip to form a second blood pressure by changing a height of the first tip relative to a patient's heart;
Measuring a second blood pulse delay at the first tip at the second blood pressure;
Measuring a third blood pulse delay at the second tip at a third blood pressure;
Inducing a second blood pressure change in the second tip to form a fourth blood pressure by changing the height of the second tip relative to the patient's heart; ,
Measuring a fourth blood pulse delay at the second tip at the fourth blood pressure;
Determining a first pressure difference by comparing the first and second blood pressures;
Determining a second pressure difference by comparing the second and fourth blood pressures;
Determining the patient's blood pressure using the ratio of the first, second, third and fourth blood pulse delays and the first and second pressure differences;
Including methods.
第一の先端部における第一のパルス波速度を測定する工程と,
患者の反対側の第二の先端部における第二のパルス波速度を測定する工程と,
前記第一および第二のパルス波速度の少なくともひとつの比を使用して血圧を計算する工程と,
を含む方法。 A non-invasive method for determining a patient's blood pressure,
Measuring a first pulse wave velocity at a first tip;
Measuring a second pulse wave velocity at a second tip on the opposite side of the patient;
Calculating blood pressure using at least one ratio of the first and second pulse wave velocities;
Including methods.
第一の先端部における第一の血液パルスの第一の到達時間を測定する工程と,
第二の先端部における第二の血液パルスの第二の到達時間を測定する工程と,
前記第一および第二のパルス到達時間の少なくともひとつの比を使用して血圧を計算する工程と,
を含む方法。 A non-invasive method for determining a patient's blood pressure,
Measuring a first arrival time of a first blood pulse at a first tip;
Measuring a second arrival time of a second blood pulse at the second tip;
Calculating blood pressure using at least one ratio of the first and second pulse arrival times;
Including methods.
少なくともひとつの波長を有する輻射を放出する輻射エミッタ,および患者の血液を通過して吸収を受けた後に,前記輻射を受け取る輻射検出器を有する組織プローブを用意する工程と,
前記組織プローブを患者の先端部に配置する工程と,
患者の心臓に対して第一の位置に,前記先端部を上昇させる工程であって,ここで前記先端部は第一の血圧を示すところ,上昇工程と,
患者の心臓に対して第二の位置に,前記先端部を下降させる工程であって,ここで前記先端部は第二の血圧を示し,前記第二の位置における前記先端部の吸収度が第一の位置における前記先端部部の吸収度に対して増加しているところの,下降工程と,
前記先端部の下降の間,前記先端部の前記吸収度を実質的に連続して測定する工程であって,ここで複数の吸収度値が形成されるところの,測定工程と,
前記第一および第二の血圧を比較することにより圧力差を決定する工程と,
前記複数の吸収度値と前記圧力差を使用して中心静脈血圧を決定する工程と,
を含む方法。 A non-invasive method for determining a patient's central venous blood pressure,
Providing a tissue probe having a radiation emitter that emits radiation having at least one wavelength, and a radiation detector that receives the radiation after being absorbed through the patient's blood;
Placing the tissue probe at the tip of a patient;
Raising the tip to a first position relative to the patient's heart, wherein the tip shows a first blood pressure,
Lowering the tip to a second position relative to the patient's heart, wherein the tip shows a second blood pressure, and the absorbency of the tip in the second position is A descending step, increasing relative to the absorbance of the tip at one position;
Measuring the absorbance of the tip substantially continuously during the descent of the tip, wherein a plurality of absorbance values are formed,
Determining a pressure difference by comparing the first and second blood pressures;
Determining a central venous blood pressure using the plurality of absorbance values and the pressure difference;
Including methods.
第一の波長を有する輻射を放出する第一の輻射エミッタ,および患者の血液の第一の経路長を通過して吸収を受けた後に,前記輻射を受け取る第一の輻射検出器を有する少なくともひとつの組織プローブを用意する工程と,
前記第一の波長の輻射を前記患者の血液を通過するように伝搬させ,患者の血液の通過後の前記輻射を検出することにより,前記患者の血液の吸収度を測定する工程と,
複数の前記経路長において前記患者の血液の吸収度を決定する工程と,
前記吸収度値に基づいて血液成分の濃度を決定する工程と,
を含む方法。 A non-invasive method for determining the concentration of blood components,
A first radiation emitter that emits radiation having a first wavelength; and at least one first radiation detector that receives the radiation after being absorbed through a first path length of the patient's blood. Preparing a tissue probe,
Measuring the absorbance of the patient's blood by propagating the radiation of the first wavelength through the patient's blood and detecting the radiation after passing through the patient's blood;
Determining the blood absorption of the patient at a plurality of the path lengths;
Determining a concentration of a blood component based on the absorbance value;
Including methods.
輻射を放出する第一の輻射エミッタ,および患者の血液を通過して吸収を受けた後に,前記輻射を受け取る第一の輻射検出器を有する少なくとの第一の組織プローブを用意する工程と,
第一の波長の前記輻射を前記患者の血液を通過するように伝搬させ,前記患者の血液の通過後の前記第一の波長の輻射を検出することにより,前記患者の血液の第一の吸収度を測定する工程と,
第二の波長の前記輻射を前記患者の血液を通過するように伝搬させ,前記患者の血液の通過後の前記第二の波長の輻射を検出することにより,前記患者の血液の第二の吸収度を測定する工程と,
前記第一および第二の吸収度に基づいて血液成分の濃度を決定する工程と,
を含む方法。 A non-invasive method for determining the concentration of blood components,
Providing a first radiation emitter that emits radiation and at least a first tissue probe having a first radiation detector that receives the radiation after being absorbed through the patient's blood;
A first absorption of the patient's blood by propagating the radiation of a first wavelength through the patient's blood and detecting the radiation of the first wavelength after passage of the patient's blood; Measuring the degree,
A second absorption of the patient's blood by propagating the radiation of a second wavelength through the patient's blood and detecting the radiation of the second wavelength after passage of the patient's blood; Measuring the degree,
Determining a concentration of a blood component based on the first and second absorbances;
Including methods.
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PCT/US2001/046855 WO2003039326A2 (en) | 2001-11-07 | 2001-11-07 | Method for noninvasive continuous determination of physiologic characteristics |
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JP (1) | JP2005507298A (en) |
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- 2001-11-07 AU AU2001297917A patent/AU2001297917B2/en not_active Ceased
- 2001-11-07 JP JP2003541424A patent/JP2005507298A/en active Pending
- 2001-11-07 WO PCT/US2001/046855 patent/WO2003039326A2/en active Application Filing
- 2001-11-07 EP EP01274207A patent/EP1450672A4/en not_active Withdrawn
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