14 results about "Peripheral blood flow" patented technology

Perfusion systems and methods are provided for enhancing perfusion to the vasculature of a patient suffering from reduced blood flow. For example, the system can increase peripheral blood flow to reduce limb ischemia, in which an extracorporeal pump having a controller, and catheter / tubing set, employed alone or in conjunction with an interventional or circulatory assist device, withdraws blood from a patient's vasculature and reintroduces that blood at another location within the patient's vasculature at a controlled local pressure or flow rate, without interfering with operation of the interventional or circulatory assist device or surgical intervention.

A flexible layered material comprises an outer skin; a first flexible fabric layer having a thickness of about 6mm to about 10mm; and a second flexible fabric layer having a thickness of about 17mm to about 22mm; wherein, in use, the outer skin is capable of facing a patient; the first fabric layer is positioned between the outer skin and the second fabric layer and comprises a plurality of first densely packed substantially parallel fibrous ribs between a first sheet proximate to the outer skin and a second sheet distant to the outer skin; and the second fabric layer comprises a plurality of second densely packed substantially parallel fibrous ribs between a third sheet proximate to the first fabric layer and a fourth sheet distant to the first fabric layer. The material is for use in an acute or hospital care setting to reduce the occurrence of pressure ulcers caused either by skin shearing or the breaking down of tissue through a lack of peripheral blood flow in patients required to spend time in a reclined or sitting position.

A system for performing a diagnostic procedure, the system comprising: a diagnostic device configured to be placed proximate tissue, the diagnostic device having a light emitter and a light detector; a computing device that delivers light from the light emitter to the tissue for a period of time, detects a dynamic property of light scattering particles within the tissue using the light detector, generates a peripheral blood flow waveform of a fluid flowing within the tissue using the detected dynamic property, and transmits the peripheral blood flow waveform to the tissue. Calculating a power spectral density of the generated peripheral blood flow waveform, quantizing a relative level of global sympathetic activity using the calculated power spectral density, identifying a relative change in global sympathetic activity within the quantized relative level of global sympathetic activity, and determining whether the identified relative change in global sympathetic activity falls outside a predetermined range of global sympathetic activity, the predetermined range of global sympathetic activity indicating candidates for therapy.

Perfusion systems and methods are provided for increasing peripheral blood flow to reduce limb ischemia, in which an extracorporeal pump having a controller, and catheter / tubing set, employed alone or in conjunction with an interventional or circulatory assist device, withdraws blood from a patient's vasculature and reintroduces that blood at another location within the patient's vasculature at a controlled local pressure or flow rate, without interfering with operation of the interventional or circulatory assist device or surgical intervention.

The invention relates to a medical method for treating an extremity, e.g. a foot or hand, to increase arterial peripheral blood flow by applying a variable localized combination of low pressure and heat controlled by a heart rate variability module that adjusts negative pressure and heating in real-time in response to the HRV sensor data, and devices made for the same.

The invention relates to a composition for improving blood flow and a composition for improving cold symptoms. Provided is a composition which promotes peripheral blood flow and has an excellent improvement effect on cold disorders. A composition for improving cold symptom, which contains spina date seed and perilla leaf as active ingredients.

A cell product may be used for treating a peripheral blood flow disorder, and the cell product may include an SSEA-3-positive pluripotent stem cells (Muse cells) derived from a mesenchymal tissue in a living body or a cultured mesenchymal cell. The peripheral blood flow disorder is preferably a peripheral arterial disease, more preferably chronic arterial obstruction in a limb.

The invention discloses an acute ischemic disease monitoring system, equipment, a medium and a product. The monitoring system comprises data acquisition equipment and a disease monitoring device which are in communication connection, the data acquisition equipment is used for performing blood flow acquisition on at least three peripheral parts of the monitored object to obtain a peripheral blood flow data set; the feature extraction module is used for performing feature extraction on each piece of peripheral blood flow data in the obtained peripheral blood flow data set to obtain a blood flow feature set; the index determination module is used for sorting the at least three blood flow characteristics in the blood flow characteristic set according to the position distances corresponding to the at least three peripheral parts and the ischemia monitoring part to obtain a blood flow characteristic sequence, and determining an acute ischemia index according to the blood flow characteristic sequence; the data monitoring module is used for determining the acute ischemia result of the monitored object according to the acute ischemia index, and dynamic and continuous accurate monitoring of the acute ischemic disease is achieved.

Noninvasive methods and apparatus for detecting blood volume imbalances in a mammalian subject are disclosed. The method includes obtaining baseline measurements of at least three physiological parameters from a subject wherein the parameters are selected from the group consisting of heart rate, electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity. Measurements of electrical body impedance, skin temperature, perfusion index, peripheral blood flow and skin humidity are taken at one or more extremities of the subject such as the calf, ankle, forearm, thigh, fingers and toes. The physiological parameters for which baseline measurements were obtained are then monitored to detect changes from the baseline measurements that indicate blood volume imbalances. A preferred embodiment comprises computing a baseline blood volume index from the baseline value measurements of each parameter to be monitored and then carrying out the step of monitoring by obtaining real time (current) value measurements of these parameters which are inputted into an algorithm which computes a real time (current) blood volume index based upon the differences between the baseline and real time (current) value measurements.

To provide a composition that promotes peripheral blood flow and exhibits excellent efficacy in improving cold sensitivity.SOLUTION: A composition for improving cold sensitivity comprises jujube seeds and Perilla herb as active ingredients.SELECTED DRAWING: Figure 3

Aspects of the disclosure relate to methods, systems, and computer-readable storage media, that are useful for characterizing subjects having cancer. The disclosure is based, in part, on methods for immunoprofiling a cancer subject and the subject's prognosis and / or likelihood of responding to an immunotherapy based upon analysis of leukocyte populations in the peripheral blood of the subject.

The invention belongs to the technical field of physiological information measurement, and provides a measurement system and method based on multi-modal physiological information and a wearable device, and the system collects various different types of physiological signals including optical signals through a signal collection module; physiological information such as heart driving force, peripheral blood flow state and tissue volume change is reflected respectively or synergistically; multi-modal physiological features are extracted through the feature extraction module, individual physiological condition parameter vectors containing multiple information are constructed through the individual modeling module, and finally physiological parameter measurement results are obtained through the parameter calculation module by means of a neural network model trained by introducing a physiological consistency constraint mechanism. According to the scheme, the defects that a single signal is prone to being interfered and information is limited can be overcome through multi-modal physiological information fusion, the stability and accuracy of measurement are improved, personalized modeling and physiological consistency constraints are matched, the neural network model conforms to the physiological mechanism while keeping the data driving expression capacity, and the method has wide application scenes.

Perfusion systems and methods are provided for increasing peripheral blood flow to reduce limb ischemia, in which an extracorporeal pump having a controller, and catheter / tubing set, employed alone or in conjunction with an interventional or circulatory assist device, withdraws blood from a patient's vasculature and reintroduces that blood at another location within the patient's vasculature at a controlled local pressure or flow rate, without interfering with operation of the interventional or circulatory assist device or surgical intervention.

The invention relates to the technical field of disease diagnosis markers, in particular to a T cell subset and application thereof in diagnosis and treatment of chronic obstructive pulmonary diseases. The flow phenotype of the T cell subgroup disclosed by the invention is CD45 + CD3 + MThhigh. The early-warning cell of the early-stage chronic obstructive pulmonary disease is found by describing a single cell transcriptome map of a patient with the early-stage chronic obstructive pulmonary disease, and the early-warning cell is a T cell subset (marked as MT-high T cell). The feasibility of the MT-high T cell as the novel diagnostic marker of the chronic obstructive pulmonary disease is verified by a peripheral blood flow type detection method of a patient with the chronic obstructive pulmonary disease. The invention provides a new technical support for clarifying an immunological mechanism of early occurrence of the chronic obstructive pulmonary disease, analyzing the heterogeneity reason of the chronic obstructive pulmonary disease and formulating a corresponding early diagnosis and intervention treatment strategy, and brings good social and economic benefits for prevention and control of the chronic obstructive pulmonary disease.