30 results about "Double balloon catheter" patented technology

The invention provides methods for inducing or increasing the vasodilation of a vessel. The invention further provides methods for inducing or increasing the flow of fluid through a vessel. An electrical impulse is applied to the vessel in order to induce or increase vessel vasodilation or to induce or increase the flow of fluid through the vessel. In a particular embodiment, a novel double-balloon catheter system incorporating electroporation technology has been designed and is used to apply the electrical impulse endoluminally.

The invention, in one embodiment, is directed to a catheter for site-specific delivery of a therapeutic agent to a blood vessel of a patient. The catheter further includes an elongated shaft having at least one inner lumen, a distal end and a proximal end and proximal and distal vessel-conforming balloons where each is separately positionable and inflatable, and when inflated, substantially restricts blood flow in the vessel and creates a treatment window of a defined but variable length for delivery of the therapeutic agent. The catheter optionally includes at least one marker band adjacent to the proximal balloon and at least one marker band adjacent to the distal balloon. At least one lateral aperture positioned in the window is in fluid communication with a drug delivery conduit located within either the inner shaft or the outer shaft to provide a homogeneous concentration of the therapeutic agent to the window.

A method for preventing contrast associated nephropathy includes the steps of providing a multi-lumen dual balloon catheter and inserting the catheter into a patient's coronary sinus. The method also includes the steps of inflating the two balloons to block blood flow from the coronary sinus into the right atrium and draining blood containing contrast solution from between the two balloons through the catheter while the blood flow is blocked. A hemo filtration unit is used to remove contrast solution from the drained blood and the filtered blood returned to the right atrium. A multi-lumen dual balloon catheter is also disclosed.

A “localizable” systemic gene therapy system is provided substantially increasing the transfection efficiency of the gene vectors into targeted tissue cells and substantially reducing the escape of the gene vectors from the targeted tissue volume, such as would waste the vectors, promote undesired immune reactions, and / or incur prohibitive costs for the required dose of gene-containing virus vectors. In this regard, the invention provides a means to simultaneously achieve local electroporation and gene-containing vector injection in a portion of a vascularized organ. It includes two double-balloon catheters that create contained volumes in parallel blood vessels for the introduction of vectors with reduced loss along with electrodes providing electroporation of the cells in the same location where the vectors are injected.

The invention discloses a double-balloon catheter for blocking arteria iliaca communis blood. The double-balloon catheter comprises a catheter body, a far end balloon, a near end balloon, a developing ring, a catheter reinforcer and a catheter seat. The catheter body is composed of a tip end, an inner tube and an outer tube, the tip end is connected with the far end of the inner tube, the inner tube is located in the outer tube, and a guide wire channel is formed in the inner tube. A liquid injection channel is formed in the area between the inner tube and the outer tube, the far end of the liquid injection channel is communicated with the far end balloon, and the liquid injection channel is communicated with the near end balloon through a liquid injection hole. The far end balloon and the near end balloon are arranged in a spaced mode in the length direction of the catheter body, and the catheter body penetrates through the far end balloon and the near end balloon. The near end of the inner tube and the near end of the outer tube penetrate through the middle of the catheter reinforcer and are connected with the catheter seat. A main connector at the end of the catheter seat is communicated with the guide wire channel, and an auxiliary connector at the end of the catheter seat is communicated with the liquid injection channel. It is not needed to guide a guide wire into the human body arteria iliaca communis, the process of an arteria iliaca communis blocking operation is simplified, and operational difficulty is reduced.

The invention provides a double-balloon catheter. The catheter comprises a catheter body, a medicine balloon and a cutting balloon are sequentially arranged in the far-end direction of the catheter body from the near end to the far end, a guide wire catheter, an injection catheter and a pumping catheter are arranged in the catheter body, a guide wire with an outer diameter of 0.014 inch is arranged in the guide wire catheter, the injection catheter is communicated with the medicine balloon, and the pumping catheter is communicated with the cutting balloon, a plurality of micropores are evenlyformed in the medicine balloon, and a plurality of cutting blades are evenly arranged on the outer surface of the cutting balloon. The product not only can expand and dredge blood vessels, but also can cut a diseased region, and can inject a liquid medicine into the cut diseased region, and as the product adopts the nanoscale liquid medicine, the absorption capacity of the diseased region to the medicine is effectively improved, and the treatment purpose is achieved.

A bifurcated dual-balloon catheter apparatus for deploying one or more stents to a bifurcated vessel or for use in angioplasty procedures involving bifurcated vessels. The apparatus is particularly suited for bifurcated vessels of the type having a main branch from which a side branch extends therefrom. The apparatus has a main branch balloon and a side branch balloon. A conduit is provided in the main branch balloon through which a portion of the side branch balloon extends. The first balloon is positionable within the main branch of the vessel while the distal portion of the second balloon is positionable within the side branch such that when the first and second balloons are inflated, the first balloon expands radially in the main branch while the distal portion of said second balloon maintains registration with the side branch by expanding radially therein.

A system and method for cardiac assist of a heart in a beating stage comprising a double balloon catheter having a proximal end and a distal end, the catheter having at least one lumen; an inflatable intra-ventricular balloon mounted on the catheter near the distal end of the catheter, the balloon having a lumen in fluid communication with the lumen of the catheter and being configured for inflation in a ventricle; and an intra-aortic balloon mounted on the catheter proximally to the intra-ventricular balloon; a control unit comprising a bidirectional pump; a fluid reservoir; and a processor configured to activate the pump; wherein the proximal end of the catheter is configured for attachment to the control unit to form a fluid conduction system in which fluid is configured to be pumped by the pump between the fluid reservoir and the intra-ventricular balloon and the intra-aortic balloon; and systolic augmentation comprising a new pressure wave which is generated when said balloon is inflated at the end of the slow ejection phase of the beating heart, such that any residual volume of blood left in said ventricle is displaced.

Most spinal cord therapies are administered systemically, with only a small portion of the therapeutic reaching the spinal cord. A novel method for delivering therapeutics directly to the spinal cord is provided. The method uses a dual balloon catheter to isolate the microvasculature around a region of the spinal cord. Once isolated, one or more therapeutics are delivered directly to the spinal cord blood supply. This allows for smaller, safer therapeutic dose to be utilized.

An apparatus, a kit and a method for rapidly restoring blood flow through, and removing a clot from, a blood vessel by chemical dissolution. The essential components include an instrument for preventing the flow of debris downstream of the clot, a coronary catheter constructed to be introduced into the blood vessel and a double balloon catheter that has a tapered tip and that can form an enclosed space containing the clot and via which dissolution fluid can be brought into contact with the clot.