51 results about "Vascular flow" patented technology

A system and method for estimating vascular flow using CT imaging include a computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to acquire a first set of data comprising anatomical information of an imaging subject, the anatomical information comprises information of at least one vessel. The instructions further cause the computer to process the anatomical information to generate an image volume comprising the at least one vessel, generate hemodynamic information based on the image volume, and acquire a second set of data of the imaging subject. The computer is also caused to generate an image comprising the hemodynamic information in combination with a visualization based on the second set of data.

Real time, high-speed image stabilization with a retinal tracking scanning laser ophthalmoscope (TSLO) enables new approaches to established diagnostics. Large frequency range (DC to 19 kHz), wide-field (40-deg) stabilized Doppler flowmetry imaging is described for human subjects. The fundus imaging method is a quasi-confocal line-scanning laser ophthalmoscope (LSLO). The retinal tracking system uses a confocal reflectometer with a closed loop optical servo system to lock onto features in the ocular fundus and automatically re-lock after blinks. By performing a slow scan with the laser line imager, frequency-resolved retinal perfusion and vascular flow images can be obtained free of eye motion artifacts.

Systems and methods for overcoming or preventing vascular flow restrictions which involve: (1) providing at least one structural element within or about a vessel having a vascular flow restriction; and (2) equipping the structural element with bio-lining such that it restores blood flow and minimizes, if not eliminates, the interface between blood and non-biological materials to thereby prevent stenosis and/or restenosis.

Nanoparticle mediated microvascular embolization (NME) of tumor tissue may occur after systemic administration of PEM, leading to widespread shutdown of vascular flow, hemorrhage, and necrosis. PEM constructs are developed that incorporate large amounts of iron-containing protein, possess high oxygen affinities, and demonstrate delayed nitric oxide binding. Such properties induce selective NME of tumors after extravasation, and will likely enhance the effect of VEGFR TKIs and/or mTOR inhibitors.

Disclosed is a filter assembly, comprising: a radially expandable vascular flow-increasing device, and a filter including an expandable proximal opening having an operative connection with the radially expandable vascular flow-increasing device, the proximal opening configured to expand in conjunction with expansion of the device, such that when the opening is in an expanded configuration, the filter is configured to filter debris from a fluid stream in which the filter is disposed.

A method (100) of computing and displaying flow information of vascular blood flow patterns, especially in the form of quantitative data plots.

Nanoparticle mediated microvascular embolization (NME) of tumor tissue may occur after systemic administration of PEM as a result of the nitric oxide sequestration by PEM. Nitric oxide sequestration may cause a reduction in available extracellular nitric oxide in the tumor endothelium, which may prompt a widespread shutdown of vascular flow, hemorrhage, and necrosis. In particular, shutdown of vascular flow may trigger changes in nitric oxide production as well as trigger an acute inflammatory response, which may create reactive nitrogen species that are particularly destructive to the microvasculature. PEM constructs are developed that incorporate large amounts of iron-containing protein, possess high oxygen affinities, and demonstrate delayed nitric oxide binding. Such properties induce selective NME of tumors after extravasation, and will likely enhance the effect of VEGFR TKIs and/or mTOR inhibitors.

Drainage of body fluid from a first area of the body to a target area of the body can be accomplished by interconnecting an artificial non-blood fluid conduit with the venous and/or lymphatic system of the body. For example, an artificial non-blood fluid conduit can be inserted into the eye to fluidly interconnect the anterior chamber with a venous structure, such as an anterior ciliary vein, or lymphatic in a target location of the eye. The outflow end of the conduit can be positioned adjacent to and/or cannulated within the venous structure or lymphatic. Further, the conduit can optionally have an angiogenic material for stimulating growth of new blood vessels in the target location to fluidly interconnect the venous structure or lymphatic with the anterior chamber using the non-blood fluid conduit.

A non-invasive apparatus for detecting turbulent flow in a cerebrovascular system of a patient without use of software, includes a planar, circular head adapted to be placed against an eye socket of the patient. A microphone in the head detects an acoustic signal from the cerebrovascular system and converts the acoustic signal to an electrical signal. A filter passes only a portion of the electrical signal having a frequency in a range between 350 Hz and 1,800 Hz as a filtered electrical signal, so as to eliminate extraneous signals due to other than vascular flow. A headset has at least one ear piece with a speaker therein for converting the filtered electrical signal to an audio signal in order to detect the turbulent flow in the cerebrovascular system of the patient.

A method and system for creating shear stress and endothelial mechanotransduction through neuromuscular stimulation of the muscle pump. Chronic application a minimum of 30 days triggers the autocrine and paracrine processes which elevates production of vasoactive substances including nitric oxide, prostacyclin, superoxide dismutase, thrombomodulin, glutathion, Krupple-like factor 2 and many others. Chronic application also promotes angiogenesis and development of collateral circulation. This is a cost-effective, non-invasive, drug-free therapy to treat vascular dysfunction and ameliorate or reverse its effects on cardiovascular health.

An abdominal aortic stent includes a first sub-stent and a second sub-stent, each having a front end and the circumference of the front end of each sub-stent is half of the circumference of the abdominal aorta, and when the circumference is gradually reduced to a rear end of each sub-stent, it has entered one side of the bilateral femoral arteries, wherein the rear ends of the sub-stents with full circumference of the cross-sectional area of the femoral artery are included therein; the first and second sub-stents are coated with external removable membrane to compress the sub-stents to generate smaller circumferences, and when the membrane has been removed, the sub-stents are fully extended to reconstruct the vascular flow path.

The present invention discloses devices that can be delivered into a vascular system to divert flow. According to some embodiments, devices are provided for treating aneurysms by diverting flow. An expandable device can comprise, for example, a plurality of connector sections and a plurality of bridge sections. Each of the connector sections may extend circumferentially about the expandable deviceand include a plurality of connector struts. Each of the plurality of bridge sections may be attached to and extend between two of the connector sections and comprise a plurality of parallel, non-branching, helical bridge members.

The invention discloses a pair of high-heeled shoes having a weight-losing function. One high-heeled shoe comprises a high-heeled shoe body, on which a vamp is arranged. The bottom end at the front part of the high-heeled shoe body is provided with a water-proof platform. The bottom end at the back part of the high-heeled shoe body is provided with a heel. One end, away from the high-heeled shoe body, of the heel is provided with a fourth groove, in which an anti-skidding block is arranged. The outer side wall of the fourth groove is provided with a fixing device. The anti-skidding block is fixed into the fourth groove via the fixing device. One end, close to the high-heeled shoe body, of the heel is provided with a first groove. The first groove is provided with a first buffer block via a first spring. The first spring is fixed into the bottom of the first groove. The pair of high-heeled shoes having the weight-losing function has following beneficial effects: acupoints of feet of a human body, highly-efficient fat-burning magnetic waves and near infrared rays are utilized for improving micro-vascular flow such that the pair of functional high-heeled shoes is designed; human channels area adjusted via a physical method in order to balance internal secretion and fat metabolism; and the weight-losing purpose is fulfilled.