MEDINOL LTD. Patent applications |
Patent application number | Title | Published |
20140031797 | CATHETER WITH RETRACTABLE COVER AND PRESSURIZED FLUID - Apparatus and method for delivering and deploying an intravascular device into the vessel including an outer and inner tube that are axially linked by a housing structure at the proximal end of the catheter, and a retractable sleeve structure having a middle tube and sleeve tip. The sleeve tip is sealed to the inner tube at the distal end, and continuously extends into the middle tube. At the proximal end of the sleeve structure, the middle tube is sealed to either a housing structure or slideable proximal ring, forming a sealed chamber between the inner tube and the sleeve structure. A radial space is formed between the sleeve tip and the inner tube optimized for intravascular device placement. During retraction of the sleeve structure, the fold of the sleeve tip peels away from the device, which expands to its deployed state while minimizing axial forces and friction. | 01-30-2014 |
20130245748 | HELICAL HYBRID STENT - An expandable helical stent is provided, wherein the stent may be formed of an amorphous metal alloy or other non-amorphous metal with a securement. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic particular to that stent. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical coils contributes to maintaining the tubular shape of the helically coiled stent. In addition, the nestling of helical coils may prevent the polymer layer from sagging at any point between cycles of the helical coils. | 09-19-2013 |
20130204350 | HELICAL HYBRID STENT - An expandable helical stent with a securement is provided. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristi. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical coils contributes to maintaining the tubular shape of the helically coiled stent. In addition, the nestling of helical coils may prevent the polymer layer from sagging at any point between cycles of the helical coils. | 08-08-2013 |
20120323307 | HYBRID STENT - A stent is provided with a series of short pieces or sections connected together by a bioresorbable polymer. The stent sections are designed to separate or articulate with time as the polymer biodegrades. The time of separation can be controlled by the characteristics of the bioresorbable polymer to allow the stent to be buried in neo-intima. By using a tube made of a bioresorbable polymer, the continuous covering of the tubing may inhibit embolization in the first few weeks after stent implantation within the walls of a vessel and timing for removal of the tube through formulation of the bioresorbable polymer can be controlled to occur when embolization is no longer a risk. When the detachment of the stent pieces or sections occurs, they are fixedly secured within the vessel and each is able to flex with the vessel independently of the other stent segments. | 12-20-2012 |
20120283817 | HELICAL HYBRID STENT - An expandable helical stent is provided, wherein the stent may be formed of an amorphous metal alloy or other non-amorphous metal with a securement. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic particular to that stent. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other to maintain the tubular shape of the helically coiled stent and prevent the polymer layer from sagging at any point between cycles of the coils. | 11-08-2012 |
20120010690 | METHOD AND APPARATUS FOR STENTING - A method and apparatus to create a more favorable flow regime in a lumen. An artificial shape in the lumen is created to at least one of eliminate flow disturbances and enchance aspects of fluid flow through a treatment site. | 01-12-2012 |
20110297735 | METHOD AND APPARATUS FOR STENT MANUFACTURING ASSEMBLY - A stent manufacturing assembly for assisting in the manufacturing of a medical stent and a process for manufacturing a medical stent are disclosed. A patterned sheet of metal can be wrapped around the manufacturing assembly's outer surface. The assembly includes a mandrel and a sleeve. The mandrel includes a rigid and substantially cylindrical external surface, and the sleeve surrounds the mandrel and has a variable inner diameter. The sleeve adheres to the inner surface of the stent formed around the sleeve to allow the sleeve to remain in place. After the mandrel is slidably removed from the sleeve, the sleeve radially collapses and contracts, thereby causing minimal shear stress on the stent's inner surface and preventing or minimizing friction and pressure between the mandrel and the stent. | 12-08-2011 |
20110238152 | Flat process of preparing drug eluting stents - The present invention provides a method of fabricating a drug delivery stent. In one embodiment, the method involves forming a stent pattern in a flat sheet, where the stent pattern includes reservoirs, generating a flat map of the reservoirs, filling the reservoirs with a composition based on the flat map, and then forming the filled stent pattern into a tubular shape and joining the sides. In another embodiment, the method involves forming a stent pattern in a flat sheet, generating a flat map of discrete portions of the stent pattern that are desirable locations for coating, coating the discrete portions with a composition based on the flat map, and then forming the coated stent pattern into a tubular shape and joining the sides. The invention provides advantages over current methods and drug-delivery stents in that it is faster, more accurate and more cost-efficient manufacturing process for fabricating drug delivery stents, that improves quality and consistency of drug delivery within and across batches of stents, and that permits automated a process of quality control. This method also allows for differential coating on the two surfaces of the stent struts, whereby the two sides are coated with different drugs and/or polymer combinations, or only one side of the strut is coated. | 09-29-2011 |
20110196315 | CATHETER TIP ASSEMBLED WITH A SPRING - A catheter tip that provides longitudinal flexibility, pushability and radial rigidity thereby improving deliverability is provided. The catheter tip includes a spring-like element to provide longitudinal flexibility and pushability to the catheter tip. The spring-like element may also provide radial support to the distal edge of the catheter tip. Alternatively, a radially rigid distal end may also be included distal of the spring-like element. The apparatus may be used with any interventional catheter system, but is particularly suitable for use with balloon-expandable stent systems and balloon-angioplasty systems, where flexibility of the catheter tip and minimal flaring of the distal edge of the catheter tip is desirable. | 08-11-2011 |
20110033098 | METHOD AND SYSTEM FOR STABILIZING A SERIES OF INTRAVASCULAR ULTRASOUND IMAGES AND EXTRACTING VESSEL LUMEN FROM THE IMAGES - A method and system for generating stabilized intravascular ultrasonic images are provided. The system may include a probe instrument, such as a catheter, connected to a processor and a post-processor. The method of using the system to stabilize images and the method for stabilizing images involve the process by which the processor and post-processor stabilize the image. A computer readable medium containing executable instructions for controlling a computer containing the processor and post-processor to perform the method of stabilizing images is also provided. The probe instrument, which has a transmitter for transmitting ultrasonic signals and a receiver for receiving reflected ultrasonic signals that contain information about a tubular environment, such as a body lumen, preferably is a catheter. The processor and post-processor are capable of converting inputted signals into one or more, preferably a series of, images and the post-processor, which determines the center of the environment at each reflection position, detects the edges of the tubular environment and aligns the image center with the environment center thereby limiting the drift of images, which may occur due to movement of the environment, and stabilizing the images. The processor may also be programmed to filter images or series of images to improve the image stabilization and remove motion interference and/or may be programmed to extract the 3D shape of the environment. The method and device are of particular use where motion causes image drift, for example, the imaging a body lumen, in particular a vascular lumen, where image drift may occur due to heart beat or blood flow. | 02-10-2011 |
20110022156 | LONGITUDINALLY FLEXIBLE STENT - An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The triangular cells are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells provide increased coverage of a vessel wall. The stent can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. Loops in the stent are disposed and adapted to cooperate so that after expansion of said stent within a curved lumen, the stent is curved and cells on the outside of the curve open in length, but narrow in width whereas cells on the inside of the curve shorten in length but thicken in width to maintain a density of stent element area which much more constant than otherwise between the inside and the outside of the curve. As a result, when the stent is coated with a medicine the more constant density of stent elements results in an even dose being applied to the inside wall of the lumen, avoiding the possibility that a toxic dose be supplied at one area while a less than effective dose is applied to another area. | 01-27-2011 |
20100280593 | STENT WITH VARIABLE FEATURES TO OPTIMIZE SUPPORT AND METHOD OF MAKING SUCH STENT - An intravascular stent especially suited for implanting in curved arterial portions or ostial regions. The stent can include an end region which is fabricated to have a greater radial strength than the remaining axial length of the stent. Such a stent is particularly suited for use in ostial regions, which require greater support near the end of the stent. The stent alternatively can include sections adjacent the end of the stent with greater bending flexibility than the remaining axial length of the stent. Such a stent is particularly suited for use in curved arteries. The stent can also be constructed with an end that has greater radial strength and sections adjacent the end with greater bending flexibility. Such a stent prevents flaring of the stent end during insertion. | 11-04-2010 |
20100274350 | HELICAL HYBRID STENT - An expandable helical stent is provided, wherein the stent may be formed of a main stent component and a securement. The main stent component is formed from a flat strip having one or more undulating side bands that may be connected to form geometrically shaped cells and are helically wound to form a stent. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical windings contributes to maintaining the tubular shape and uniformity of the helically coiled stent. Alternatively, the flat strip may comprise a single undulating pattern. At the ends of the main stent component are end bands, which when wound, form a cylindrical ring. In one embodiment, one or more struts of the main stent component may have a width sufficient to include one or more fenestrations. The fenestrated struts may be connected by loops or turns wherein the material is narrower than that of the fenestrated struts to provide enhanced flexibility. The helical tubular is maintained with a securement. | 10-28-2010 |
20100228339 | LONGITUDINALLY FLEXIBLE STENT - An intravascular stent especially suited for implanting in curved arterial portion. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The cells are adapted to provide radial support, and also provide longitudinal flexibility after expansion. The cells also provide increase coverage of a vessel wall. Loops in the stent are disposed and adapted to cooperate, so that after expansion of said stent within a curved lumen, the stent is curved and cells on the outside of the curve open in length, but narrow in width, whereas cells on the inside of the curve shorten in length, but thicken in width to maintain a density of the stent element area which is much more constant than otherwise between the inside and outside of the curve. The stent also minimizes flaring out by eliminating free loops of the radially supporting circumferential bands of loops. | 09-09-2010 |
20100100166 | LONGITUDINALLY FLEXIBLE STENT - An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The triangular cells are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells provide increased coverage of a vessel wall. The stent can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. Loops in the stent are disposed and adapted to cooperate so that after expansion of said stent within a curved lumen, the stent is curved and cells on the outside of the curve open in length, but narrow in width whereas cells on the inside of the curve shorten in length but thicken in width to maintain a density of stent element area which much more constant than otherwise between the inside and the outside of the curve. As a result, when the stent is coated with a medicine the more constant density of stent elements results in an even dose being applied to the inside wall of the lumen, avoiding the possibility that a toxic dose be supplied at one area while a less than effective dose is applied to another area. | 04-22-2010 |
20100076540 | SYSTEM AND METHOD FOR DELIVERING A BIFURCATED STENT - A system and method for delivering and assembling a bifurcated stent in a bifurcated vessel having a first lumen and a second lumen. The system and method includes the use of three balloon catheters wherein at least one of the catheters is a fixed wire catheter. A first segment of the bifurcated stent having a stem portion, a first leg portion, a longitudinal bore extending therethrough and a branch aperture formed in the side wall is mounted on two of the balloon catheters and delivered to the treatment site where it is implanted into the first lumen. A second segment of the bifurcated stent having a proximal end, a distal end and a longitudinal bore extending therethrough is mounted on the third balloon catheter and is delivered to the treatment site such that the distal end extends into the second lumen and the proximal end extends into longitudinal bore of the first segment. The second segment is then implanted into the second lumen and secured to the branch aperture of the first segment to form a bifurcated stent. | 03-25-2010 |
20100042200 | METHOD AND APPARATUS FOR STENTING - A method and an apparatus to create a more favorable flow regime in a lumen. An artificial shape in the lumen is created to at least one of eliminate flow disturbances and enhance aspects of fluid flow through a treatment site. | 02-18-2010 |
20090306759 | COVERING FOR AN ENDOPROSTHETIC DEVICE AND METHODS OF USING FOR ANEURYSM TREATMENT - The present invention relates to covered endoprosthetic devices. Covered endoprosthetic devices comprise an endoprosthesis and a sheath. The sheath comprises a central portion and outer portions, wherein the central portion preferentially restricts or causes a restriction of blood flow. Blood flow can be reduced by the central portion of the sheath by varying the permeability of the sheath or by having projections on the sheath that slow blood flow. Permeability may be provided by perforations or holes in the material of the sheath or by varying the polymer structure that makes up the sheath itself. The outer portions of the sheath do not substantially reduce blood flow. Methods of using sheath-covered endoprosthetic devices of the invention to treat aneurysms, especially aneurysms in proximity to small perforator vessels or arteries, are also encompassed. | 12-10-2009 |