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Method and apparatus for presenting information concerning flow behavior of a body fluid externally measured by ultrasound

A technology of flow characteristics and liquid flow, used in blood flow measurement devices, measurement of pulse/heart rate, ultrasonic/sonic/infrasonic diagnosis, etc.

Inactive Publication Date: 2007-09-05
KONINKLIJKE PHILIPS ELECTRONICS NV
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Problems solved by technology

However, threshold analysis using such Doppler signals presents at least one problem: variations in body shape and size, steady-state (i.e., healthy) blood flow, steady-state blood pressure, etc. in humans
[0014] Furthermore, even in an AED that uses multiple transducers to ensure that one of them captures the artery, the optimal transducer in a multi-transducer pad may still be offset from the artery by an unknown distance, meaning that the signal is different from that of no offset the situation is different

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  • Method and apparatus for presenting information concerning flow behavior of a body fluid externally measured by ultrasound
  • Method and apparatus for presenting information concerning flow behavior of a body fluid externally measured by ultrasound
  • Method and apparatus for presenting information concerning flow behavior of a body fluid externally measured by ultrasound

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Embodiment Construction

[0032] Here, where possible, the same reference numerals are used to designate the same elements that are common to the drawings. The images in the figures are generally simplified and not drawn to scale for illustrative purposes.

[0033] The accompanying drawings illustrate exemplary embodiments of the invention and as such should not be considered limiting of the invention's scope, which is capable of other equally effective embodiments.

[0034] This detailed description is divided into two parts: the first part describes the new and inventive measurement of flow properties, while the second part describes the means for presenting the measurement results to the caregiver.

[0035] As discussed above, assessing a patient's pulse condition presents a challenging task, especially in emergency situations or during surgical procedures, postoperative intensive care, and other life-threatening situations. In this situation, while detecting the heart's electrical activity, the el...

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Abstract

The present invention relates to a flow behavior monitor for presenting ultrasound measurements of an indicia of flow behavior of a fluid in a subject. The indicia of flow behavior are calculated for several frequency slices within a Doppler signal power spectrum and these indicia may be used to determine pulsatility and / or blood flow, as well as other parameters of flow behavior. Because of the robust nature of the calculated indicia, the flow behavior monitor has particular use in an Automated or Semi-Automated External Defibrillator (AED) for determining whether to defibrillate a patient.

Description

technical field [0001] The present invention relates generally to the field of diagnostic medical ultrasound, and in particular to methods and devices for presenting information about the flow properties of bodily fluids measured using externally attached ultrasound devices. Background technique [0002] Patient monitoring systems are used to provide real-time estimates of clinical parameters of a patient's vital organs in emergency situations and during surgical procedures, post-surgical intensive care, and other life-threatening situations. Typically, these systems display vital sign measurements such as ECG (electrocardiogram), EEG (electroencephalogram), SpO 2 (blood oxygen saturation), CO 2 (blood carbon dioxide level), blood pressure, etc. However, immediate determination of the condition of the patient's heart and blood flow through the body is often critical to the caregiver's diagnosis and actions with respect to the patient. Likewise, in the operating room durin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/06
CPCA61N1/3925A61B8/06A61B8/02A61B8/488
Inventor E·科亨-索拉尔S·阿亚蒂B·拉于
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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