48results about How to "Flow of blood" patented technology

The present invention provides devices and methods for the treatment of cardiovascular valve diseases such as aortic stenosis. A vascular valve assembly is formed from two or more valve devices, each of which contains a valve mounted in a stent. The individual valve devices are brought to the site of the defective valve by standard percutaneous catheterization methods. Lateral expansion of the stents at the site of valve replacement produces a functioning valve assembly. Appropriate sizing and number of valve devices prevents regurgitation and migration. The assembly of two or more smaller valve devices at the site of a defective valve prevents complications due to the large size of single valve prostheses.

This invention is an improved medical device for non-invasive pulsation, including counterpulsation or simultaneous pulsation, treatment of heart disease and circulatory disorder through external cardiac assistance. The device is a cuff which is affixed on a patient's lower body and extremities, and which constricts or expands by electromechanical activation, thereby augmenting blood pressure for treatment purposes. The cuff contains preferably fixed volume fluids such as gel, air, or water. The cuff envelops and is affixed to the patient's lower body and limbs. In an alternative embodiment, the cuff creates a fixed volume of air between the cuff and the patient such that the cuff creates a vacuum when expanding, thereby stimulating return of blood to the constricted region, permitting better and/or faster responses.

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 method for simulating a blood flow in a vascular segment of a patient is proposed. A 3D image dataset of an examination region is recorded by a radiographic diagnostic device for generating a 3D vascular model. Contrast agent propagation in the examination region is captured by a dynamic 2D angiography method for generating a real 2D angiography recording. A CFD simulation of the blood flow is performed in the 3D vascular model based on a blood flow parameter for generating a virtual 2D angiography recording. A degree of correspondence between the real and the virtual 2D angiography recordings is determined from identical angulation and adjusted recording geometry of the patient and compared with predefinable tolerance values. The CFD simulation is iteratively optimized while changing the blood flow parameter as a function of the comparison. The degree of correspondence is outputted when the optimum CFD simulation is achieved.

An enclosure is dimensioned to enclose an affected area of a body part plus a small margin around which a releasable seal is attached to make the enclosure substantially airtight around the body part without contacting the area to be treated. A port in the enclosure is attached to tubing for connection of a pump for forcing air under pressure into the enclosure. In the preferred embodiment, the enclosure is an inflatable plastic bag. The compression provided by the air pressure is applied uniformly to the body part to increase blood flow within the body part without physically contacting the affected area of the body part. In one embodiment, the pump is a combination air and vacuum pump so that pressures within the enclosure may be cycled between high and low pressures.

Disclosed are compositions, methods and kits to control bleeding through the use of an internal occluder based on polymeric solutions, including use of reverse thermosensitive polymers in nephron-sparing surgeries, which produces a completely bloodless surgical field, allowing speedy resection. In certain embodiments, after a certain amount of time, the flow gradually resumes, with no apparent adverse consequences to the kidney. In certain embodiments, return of blood flow may be accelerated by cooling the kidney. The compositions, methods and kits for perfusive organ hemostasis can also be used to simplify or to enable other organ surgeries or interventional procedures, including liver surgery, prostate surgery, brain surgery, surgery of the uterus, spleen surgery and any surgery on any highly vascularized organs.

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.

Provided are systems using compression devices for a mammography unit, and methods of using the same, for example, in conjunction with imaging of a patient's breast. The instant mammography units can comprise at least one x-ray transparent inflatable chamber for containing a fluid. When fluid is introduced into the chamber, at least one surface of the chamber expands, breast motion is limited, 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 that may be detected by a sound detection device. The detected sounds may be used to assist a radiologist in identifying regions of interest on a mammogram, and additionally or alternatively may be used to a enhance a computer-assisted detection (CAD) process by contributing an additional data parameter.

Provided are systems using compression devices for a mammography unit, and methods of using the same, for example, in conjunction with imaging of a patient's breast. The instant mammography units can comprise at least one x-ray transparent inflatable chamber for containing a fluid. When fluid is introduced into the chamber, at least one surface of the chamber expands, breast motion is limited, 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 that may be detected by a sound detection device. 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 be used to assist a radiologist in identifying regions of interest on a mammogram, and additionally or alternatively may be used to a enhance a computer-assisted detection (CAD) process by contributing additional data parameters.

To provide infusion therapy that can effectively transluminally deliver drugs or the like to a target spot without invading areas other than a diseased area. The infusion therapy is for administering a drug, cells or the like, or inserting a treatment instrument into the target diseased area. A blood vessel area including a bifurcated blood vessel connecting to the diseased area is occluded at the distal and the proximal region thereof to form an occluded area, and the drugs or the like are pumped and supplied to the occluded area, which causes the drugs or the like to flow retrogressively and retentively in the bifurcated blood vessel connecting in the occluded area, and be infused and administered to the diseased area.

The present invention is related to an electronic penile aneurysm enhancer and more specifically, a portable electronic penile aneurysm enhancer having a small size to be easily carried around, and by electronically performing expansion and contraction movement of penile muscles, the enhancer invigorates the blood flow movement of spongy body so as to recover the narrowed blood vessels to be normal or so as to penetrate the blocked blood vessels. The present invention comprises a body portion (2); a piston pumping portion (6) provided inside the body portion (2) for pumping to move air through an inlet valve port (12) and an outlet valve port (14); a first electronic three way valve (10) connected to the inlet valve port (12) of the piston pumping portion (6) for converting flow path so as to suck air in; a second electronic three way valve (20) connected to the outlet valve port (14) of the piston pumping portion (6) for converting flow path of the sucked-in air, wherein the penile/male member is expanded and contracted by the first and second electronic three way valves (10, 20). The present invention also comprises a circular enhancing tube (30) having a penile insertion hole (42) and a penile sealing section (40) for expanding and contracting the penis by operating the first and second electronic three way valves (10, 20), and a central control section for controlling the first electronic three way valve (10), the second electronic three way valve (20) and the piston pumping portion (6).

A cuff-block for a finger arterial blood pressure monitor is able to relieve a blood flow impediment and the hindrance of a finger motion at the measuring site during the finger arterial blood pressure monitoring.

A disk-like cuff (12) for local pressurization is attached over a finger artery (6) on a proximal finger portion (4) of a measured finger (1), this cuff (12) is held by a cuff-holding portion (11a) of an annular cuff-fixing member (11) put from the tip end portion of the measured finger (1), and the cuff-fixing member (11) is supported on the measured finger (1) with local supportings by forked supporting points (11a, 11b) of the cuff-fixing member (11) placed on respectively portions of a proximal joint (1c) and a medial one (1b).

The invention relates to medicine, and more particularly to gravity therapy, and can be used in the comprehensive treatment and rehabilitation of patients having neurological, cardiological and therapeutic profiles with circulatory insufficiency. The technical result is achieved in that the patient is placed in a right lateral recumbent position on an inversion table with their legs bent at the knees and the thighs spread at 30-60 degrees. The patient is secured by the pelvis with the aid of a soft securing device. The parameters of a cycle of oscillatory movements to be performed by the inversion table as the head part of the table is lowered or raised, i.e. variable angles of rotation about the longitudinal and transverse axes of the table, the oscillation frequency of the table and the maximum angle of inclination of the head part of the table, are set using an operating console. When in operation, the inversion table performs oscillatory movements changing the direction of rotation of the table about the axis and the angle of inclination of the table, the head part of the table being gradually lowered and returned to its starting position. Use of the claimed invention increases the efficacy of treatment of patient diseases related to circulatory insufficiency while avoiding negative effects on the patient in the form of reflex reactions, raised arterial pressure and the disruption of venous outflow from the vital organs.

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.

Provided is a technology which quantitatively measures blood flow in the vicinity of circulatory organs. An ultrasound image capture device according to the present invention removes an image portion corresponding to an organ shape by taking the difference of a multi-frame ultrasound image, and thereafter computes a measured value of a blood flow velocity vector on the basis of a plurality of images at different timings (as per FIG. 3).

Embodiments of the present invention relate to a system and method for in vivo measurement of blood parameters by processing analog electrical signals from a plurality of photodetectors. In some embodiments, it is possible to determine one or more blood parameters according to (i) a first electrical signal from a first detector and (ii) a second electrical signal from a second photodetector. A difference analog electrical signal is generated, indicative of a difference between the light response signal at the first location and light response signal at the second location, is generated. One or more blood parameters may be detected according to the difference analog electrical signal.

Methods and pharmaceutical compositions for modulating tumor growth or metastasis and methods for prognosing treatment therewith are provided.