49results about How to "Flow of blood" patented technology

Methods are provided for partial aortic occlusion for cerebral perfusion augmentation in patients suffering from global or focal cerebral ischemia. The descending aorta is accessed. A device is then located downstream from the takeoff of the brachiocephalic artery. The device is operated to at least partially obstruct blood flow in the aorta during systole and diastole. A physiologic parameter can be measured. The device can then be adjusted to modify the degree of obstruction based on the measured physiologic parameter.

An electrode array allows for rapid ablation of a strip of tissue in an organ providing a barrier to blood loss during resection operations.

A warming system, mounted to the foot of a bed, warms a person's lower extremities by directing air into the space between the mattress and overlaying blankets. A blower directs air into an elongated distribution chamber having many tiny exit apertures. The chamber is mounted at the foot of the bed, so that air exiting the apertures warms the person's feet. For maximum thermal transfer, the chamber is placed under the sheet and any blankets, but above the mattress cover and fitted sheet. The chamber may be implemented by a length of open cell foam, a hollow manifold with many punctures or other tiny distribution apertures, collapsible pocket, etc. While the person is lying on the bed beneath the blankets, with feet proximate the foot of the bed, the blower directs temperature-regulated air into the chamber and through the exit apertures, thereby warming the person's feet. A temperature regulator ensures a normothermic air temperature (or alternatively, hyperthermic air temperature.) Thus, the invention helps relieve or prevent “cold feet” by directing normothermic air at a person's lower extremities. Additionally, by applying heat to the feet and legs, the invention encourages blood flow by virtue of sympathetic vasodilation and local temperature-mediated vasodilation. The invention is also believed to prevent some leg and foot ulcers from forming by maintaining the lower extremity at a near normal temperature during sleep.

The present invention described the administration of halogenated flosequinan derivatives and the enantiomers of halogenated flosequinan derivatives for the treatment of sexual dysfunction (in males and females) and for the treatment of cardiovascular disease.

Provided are systems using compression devices for a mammography unit, and methods of using the same. The instant mammography units can comprise at least one x-ray transparent inflatable chamber. When fluid is introduced into the chamber, at least one surface of the chamber expands, and the breast and its vasculature are compressed. Fluid may also be released from the chamber, and as the chamber deflates, blood flow to the breast is restored, producing Korotkoff sounds. Sound data may be obtained with respect to both of a patient's breasts, and the sound data from a patient's first breast may be compared with the data obtained from the contralateral breast. The detected sounds, the comparison data, or both may assist a radiologist in identifying regions of interest on a mammogram, and to enhance a computer-assisted detection (CAD) process and a database of mammography images.

Tourniquet devices and associated methods of use and manufacture are disclosed herein. Tourniquet devices configured in accordance with several embodiments of the disclosure can include, for example, a strap having a proximal end portion and a distal end portion, a buckle assembly connected to the proximal end portion, and a pulley assembly movably coupled to the strap. Tourniquet devices configured in accordance with the technology can be easily applied because the pulley assemblies can reduce the force a user must exert on the tourniquet devices to constrict or occlude blood flow. Additionally, tourniquet devices disclosed herein can also serve as functional, wearable items (e.g., a belt, integrated into clothing) such that the tourniquet devices are conveniently stored and readily accessible in emergencies.

A device for simulating blood flow including an anatomical unit and a waveform generator for generating waveforms. The waveform generator includes a pump capable of pumping a fluid through at least one fluid line and thereby transmitting the waveform from the waveform generator through the fluid line. The waveform generator further includes a bifurcation point capable of splitting the fluid line into additional fluid lines, where the fluid lines include a main line and a parallel line. Additionally, the waveform generator includes valves capable of at least partially occluding fluid flow. The device further includes a reservoir capable of housing the fluid, where the waveforms enter and exit the anatomical unit and the waveform generator through the fluid lines simulating blood flow.