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.

A dual balloon catheter apparatus for controlling postpartum hemorrhage in uterine or vaginal cavities or hemorrhage in other body cavities, comprising: (1) a catheter having an inflation lumen and a deflation lumen; (2) a first inflatable balloon in fluid communication with the inflation lumen; and (3) a second inflatable balloon encompassing the first balloon and in fluid communication with the deflation lumen. A gaseous inflation medium can be introduced from an external gas source through the inflation lumen to inflate the first balloon, so as to apply a substantially even pressure along a substantial portion of an inner surface of a uterine cavity to reduce or eliminate bleeding along such inner surface. The second inflatable balloon functions to confine any gaseous inflation medium that escapes from the first balloon, due to leakage or rapture of such first balloon, and to discharge such escaped gaseous inflation medium through the deflation lumen.

A dual balloon catheter apparatus for controlling postpartum hemorrhage in uterine or vaginal cavities or hemorrhage in other body cavities, comprising: (1) a catheter having an inflation lumen and a deflation lumen; (2) a first inflatable balloon in fluid communication with the inflation lumen; and (3) a second inflatable balloon encompassing the first balloon and in fluid communication with the deflation lumen. A gaseous inflation medium can be introduced from an external gas source through the inflation lumen to inflate the first balloon, so as to apply a substantially even pressure along a substantial portion of an inner surface of a uterine cavity to reduce or eliminate bleeding along such inner surface. The second inflatable balloon functions to confine any gaseous inflation medium that escapes from the first balloon, due to leakage or rapture of such first balloon, and to discharge such escaped gaseous inflation medium through the deflation lumen.

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 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.

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.

Disclosed are catheter apparatus and methods for deploying a stent in a bifurcated vessel while minimizing flow problems in the branch vessel. In general, the catheter includes at least one non-compliant inflation structure for pushing a stent against a vessel wall in a main vessel and a compliant inflation structure for forming an opening in the stent across an opening in a branch vessel. Ideally, flow reduction caused by the stent is minimized due to the stent opening at the branch vessel. Additionally, other medical devices, such as a guide wire or a second stent, may be easily inserted through the opening in the stent into the branch vessel.

Compositions, methods of fabrication and methods of treatment for the controlled release of a therapeutic substance to a treatment region are disclosed herein. In some embodiments, block copolymer-based release platforms (modified or unmodified) can be used to deliver a therapeutic substance to an inflamed site in, for example, the coronary tree or the kidney glomeri. The platforms can be carriers of at least one therapeutic substance. An external “trigger”, or stimulus, such as radiation, ultrasound, temperature, a magnetic field, a change in pH, a change in ionic strength or release of an enzyme, can be used to destabilize the platform in order to release its payload in a controlled manner once at a treatment site. Delivery devices can include a syringe, an infusion catheter, a porous balloon catheter, a double balloon catheter and the like.

A method for controlling the systemic pressure at the end of a cardiac operation wherein a double-balloon catheter is brought, along a single path, close to the junction of a right atrium with a superior and inferior venacavae. The distance between a first and a second balloon is then adjusted so that they are placed at an adequate position in the superior and inferior venacavae respectively. The balloons are inflated and one checks whether a balance between the outputs of the two sides of the heart has been restored. The balloons are deflated when a new equilibrium is established and the catheter is removed along the same path. A double balloon occlusion device especially designed to perform said operation is also described.

The invention discloses a double-balloon catheter stent, which is composed of a positioning balloon and a columnar balloon, wherein the columnar balloon is a double-layer balloon, the inner layer balloon is made of a material with a pressure greater than 0.5MPa, and the outer layer balloon The material is one of soft polyurethane, latex or silica gel, the surface of the columnar balloon is equipped with a stent, and the surface of the stent is coated with a hydrophilic coating material. The invention is used for placing a bracket in a lumen, and is especially suitable for placing a bracket in the urethra in urology as a temporary support for patients with dysuria, replacing a urinary catheter.

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.

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 comprising a main branch from which a side branch extends therefrom. The apparatus has loon 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 for performing a medical treatment in a blood vessel while providing downstream microcirculatory system protection, the system being composed of: a catheter having a longitudinal axis, a distal end, an outer lateral surface, a central blood bypass flow lumen extending along the longitudinal axis and opening at the distal end, blood flow inlet and outlet openings extending from the lateral surface and communicating with the bypass flow lumen, and first and second inflation lumens extending to the lateral surface at respective first and second locations that are spaced apart along the longitudinal axis and that are between the inlet openings and the outlet openings; and first and second inflatable members secured to the lateral surface and each having an interior that communicates with a respective one of the first and second inflation lumens, wherein the catheter has a thin outer wall enclosing a hollow interior that is completely occupied by the bypass flow lumen, except for the space occupied by the first and second inflation lumens.

Pro-healing agent formulation compositions, methods and treatments for enhancing vascular healing are disclosed herein. In some embodiments, a pro-healing agent is encapsulated, suspended, disposed within or loaded into a biodegradable carrier for sustained-release delivery to a denuded or damaged endothelium treatment area in a blood vessel. In some applications, the pro-healing agent can accelerate re-endothelialization of a denuded vascular region. In some applications, the pro-healing agent can assist in the regaining of endothelium functionality. The formulation can be delivered by a delivery assembly such as an infusion catheter, a porous balloon catheter, a needle injection catheter, a double balloon catheter or the like.

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 dual double balloon catheter includes a catheter having a proximal end portion, a central portion and a distal end portion. The catheter includes a plurality of lumens within the catheter extending from the proximal end portion, and a plurality of inflatable balloons positioned in the central portion and / or the distal end portion, and the balloons being communicatively connected with a corresponding one of the plurality of lumens to selectively inflate / deflate the corresponding inflatable balloon, wherein one or more of inflatable balloons further includes a second one of the plurality lumens associated with a corresponding inner wall of a corresponding inflatable balloon and adapted to receive a radioactive dose or a therapeutic agent for a treatment. The plurality of balloons can have varying sizes in relation to each other and also include lumens within or associated with the inner walls of the balloons to deliver a treatment.

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 relates to a pressure reactivity detection device of double-balloon catheters. The pressure reactivity detection device comprises a sealed container which can be opened, wherein the wall of the container is provided with three or more small holes communicated with the inside and outside of the container. The pressure reactivity detection device further comprises an air inlet pressing port and a deflation valve which are used for detecting pressure reactivity of the double-balloon catheters. The pressure reactivity detection device is used for detecting pressure reactivity of one or more double-balloon catheters, and the pressure reactivity detection device can be used for detecting quality of the double-balloon catheters like diaphragm function detection tubes by replacing a traditional balloon blasting method.

A double-balloon catheter device for gastrointestinal anastomosis. The double-balloon catheter device for gastrointestinal anastomosis includes a liquid injection assembly, a double-balloon assembly, and a supporting device (15) connecting the liquid injection assembly and the double-balloon assembly. The liquid injection assembly includes a first balloon liquid injection connection port (2), a guide wire connection port (3), and a second balloon liquid injection connection port (4). The double-balloon assembly includes a double-balloon catheter device (5), and includes a first balloon (6) and a second balloon (7) that can expand-and that are respectively disposed on the two ends of the double-balloon catheter device (5). The double-balloon catheter device (5) is provided with a first balloon liquid injection channel (51), a guide wire channel (52), and a second balloon liquid injection channel (53).

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.

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 duel-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 does to be utilized.