932 results about "Side branch" patented technology

A surgical device including: a first shaft having a first projection radially offset from an axial direction of the first shaft, the first projection having a first clamping surface; a second shaft slidably disposed relative to the first shaft, the second shaft having a second projection radially offset from the axial direction, the second projection having a second clamping surface; a dissector for dissecting tissue from a blood vessel to be harvested; a first actuator for sliding the second projection relative to the first projection to capture a side branch of the vessel between the first and second clamping surfaces; at least one electrode for applying cauterizing energy to cauterize the captured side branch; a cutting blade movably disposed on one of the first or second projections; and a second actuator for moving the cutting blade to sever the side branch captured between the first and second projections.

The present invention is directed to a stent for use in a bifurcated body lumen having a main branch and a side branch. The stent comprises a radially expandable generally tubular stent body having proximal and distal opposing ends with a body wall having a surface extending therebetween. The surface has a geometrical configuration defining a first pattern, and the first pattern has first pattern struts and connectors arranged in a predetermined configuration. The stent also comprises a branch portion comprised of a second pattern, wherein the branch portion is at least partially detachable from the stent body.

A system and method for endoluminal grafting of a main anatomic conduit in its diseased state in which it dilates to pose a life threatening condition and its various conduits that emanate from the main anatomic conduit. The grafting system comprises an endoaortic graft having at least one opening therein and at least one branch graft that is passable through the opening of the endoaortic graft into the branch anatomic conduit(s) such that the junction between the branch graft and the endoaortic graft is substantially fluid tight. A system and method for delivery of the endoaortic graft and also a system and method for efficient alignment and deployment of the branch (e.g., side branch) graft such that the coupling of the branch graft with the endoaortic graft is efficient and exact and fluid-tight; and a system and method for coupling the branch to the endoaortic graft via a coupling mechanism employing a memory metal alloy; a system and method for the proper and exact alignment of the endoaortic graft and the branch using magnetic force of a suitable nature, and which does not use the magnetic force as the coupling mechanism.

A balloon catheter device designed to be especially well suited for use in providing medical treatment within a blood vessel, and a method for conducting such medical treatment are provided, wherein the balloon catheter has a central support tube or lumen, and has, near a distal end of the catheter, a plurality of inflatable balloon elements extending along the catheter in helical patterns, with the balloon elements spaced equidistantly around the central support tube. The catheter thus provides the ability to apply pressure, by way of the inflated balloon elements, to center the central support tube in the blood vessel, while at the same time preserving blood flow in the blood vessel past the catheter as well as in side branch blood vessels extending from the blood vessel under repair.

The present disclosure describes treatment of the vasculature of a patient with an expandable implant. The implant is constrained to a reduced delivery profile for delivery within the vasculature by at least one sleeve. The implant may be constrained to other diameters, such as an intermediate configuration having a diameter larger than the delivery profile and smaller than the deployment diameter. The sleeves may be expanded, allowing for expansion of the diameter of the expandable implant, by disengaging a coupling member from the sleeve or sleeves from outside of the body of the patient. The expandable implant may comprise a number of side branch fenestrations or fenestratable portions.

An implantable, bioresorbable and/or biodegradable sealing member, such as a staple, clip, snap or rivet, is used for clamping vessels, vessel side-branches, aneurysms, or any other tube like body-parts or for sealing vascular access sites and wound site management. The implantable, bioresorbable and/or biodegradable member comprises a combination of materials which dissolve or degrade in the human body without any harmful effects on the person that wears the member.

A bifurcation stent includes a first end which is deformable or crushable at a lower force than a second end. The crushable first end and more rigid second end of the bifurcation stent allow one end of the stent to remain expanded in tissue supporting configuration in a side branch of a vessel bifurcation while the other end is easily crushed against the side wall of the main vessel into which it extends. A method of supporting a bifurcated body lumen with the bifurcation stent involves delivering the bifurcation stent in an unexpanded configuration to a bifurcation in a body lumen, positioning the bifurcation stent with the distal portion substantially within a side branch vessel of the bifurcation and the proximal crushable portion substantially within the main vessel, expanding the bifurcation stent, and expanding a main vessel stent along side the bifurcation stent and thereby crushing at least a portion of the crushable proximal portion of the bifurcation stent against the main vessel wall.

The present invention is directed to a stent for use in a bifurcated body lumen having a main branch and a side branch. The stent comprises a radially expandable generally tubular stent body having proximal and distal opposing ends with a body wall having a surface extending therebetween. The surface has a geometrical configuration defining a first pattern, and the first pattern has first pattern struts and connectors arranged in a predetermined configuration. The stent also comprises a branch portion comprised of a second pattern, wherein the branch portion is at least partially detachable from the stent body.

The present invention is directed to a stent for use in a bifurcated body lumen having a main branch and a side branch. The stent comprises a radially expandable generally tubular stent body having proximal and distal opposing ends with a body wall having a surface extending therebetween. The surface has a geometrical configuration defining a first pattern, and the first pattern has first pattern struts and connectors arranged in a predetermined configuration. The stent also comprises a branch portion comprised of a second pattern, wherein the branch portion is at least partially detachable from the stent body.

Devices, systems and methods are provided for treating aneurysms, particularly cerebral aneurysms. Such treatment is achieved minimally invasively without the need for conventional filling materials and methods. Such treatments may be used for aneurysms located near blood vessel side-branches and bifurcations.

Apparatus and methods are provided for providing access to a body lumen, e.g., to deliver a pacing lead within a patient's heart. The apparatus includes a tubular member including a proximal end, a distal end sized for insertion into a body lumen, and a lumen extending therebetween. An elongate member extends from the distal end of the tubular member. An expandable sheath extends along at least a portion of the elongate member, the sheath being expandable from a contracted condition to facilitate insertion into a body lumen, and an enlarged condition wherein the sheath at least partially defines a lumen communicating with the tubular member lumen. A stylet or other shaped element is insertable into the elongate member for changing a shape of at least a distal tip of the elongate member, e.g., for accessing side branches extending from a body lumen, e.g., within a patient's coronary venous system.

The present invention comprises a highly conformable stent graft with an optional portal for a side branch device. Said stent graft comprises a graft being supported by a stent, wherein said stent comprises undulations each which comprise apices in opposing first and second directions and a tape member attached to said stent and to said graft such that the tape member edge is aligned to the edge of the apices in the first direction of the each of the undulations, thus confining the apices in the first direction of the undulations to the graft and wherein the apices in the second direction of the undulation are not confined relative to the graft; wherein said graft forms unidirectional pleats where longitudinally compressed and wherein said apices in the first direction of said undulation is positioned under an adjacent pleat when compressed. The invention also discloses and claims methods of making and using said highly conformable stent graft and method of making the optional portal.

A branch graft stent system includes a tubular primary graft having a branch graft opening which when deployed is located in alignment with a side branch vessel emanating from the primary vessel in which a branch graft is deployed. A connector (flange) member forms a perimeter of the branch graft opening and is constructed so that the connector member is substantially flush with the wall of the tubular primary graft. The tubular branch graft has a first expandable ring and a second expandable ring spaced apart from each other as part of a connection section located at a proximal end of the tubular branch graft. The first expandable ring, the second expandable ring, and graft or other material spaced between the first expandable ring and the second expandable ring when engaged with the perimeter of the branch graft opening of the primary graft, the assembly forms a flexible sealed connection between the primary graft and branch graft lumens to continue to exclude the aneurysm while providing a conduit for blood flow to the branch vessel. A distal end of the branch graft can be anchored by a balloon expandable or a self-expanding stent to the wall of the branch vessel beyond the aneurysm.

Exemplary embodiments comprise AV fistulas and other anastomotic devices for creating new or reinforcing existing side-branch vessels, and/or bridging neighboring vessels together. An exemplary embodiment may comprise a sidewall port, such as a flanged sidewall port, and/or flow frame design, such as a partially bare, flexible stent or a whisk, for purposes of creating a transmural flow. Another exemplary embodiment may comprise a compliant vessel support to aid in the transition from device to vessel and/or vessel to device, and to promote vessel dilation.

A guidewire apparatus for a medical device that includes an expandable guidewire section that can be locked in an expanded state. In one use, the expandable section can be temporarily locked to a working element of a medical device to facilitate the transmission of torque from the guidewire to the medical device. Hence, this configuration may be utilized to aid in orientation of the working element with a vessel side branch by providing the user with the ability to apply a rotational force to the distal end of the stent delivery system. Another use includes docking the expandable section near an opening into a guidewire lumen at the catheter tip. This configuration is particularly useful in forming a smooth transition between the guidewire and the catheter tip to reduce the phenomenon of fish-mouthing.

A joining arrangement between a main tube ( 3 ) and a side arm ( 5 ) in a side arm stent graft ( 1 ). The side arm ( 5 ) is stitched into an aperture ( 11 ) in the main tube and is in fluid communication with it. The aperture is triangular, elliptical or rectangular and the side arm is cut off at an angle to leave an end portion having a circumferential length equal to the circumference of the aperture. The side arm can also include a connection socket ( 76 ) comprising a first resilient ring ( 79 ) around the arm at its end, a second resilient ring ( 80 ) spaced apart along the arm from the first ring and a zig zag resilient stent ( 82 ) between the first and second rings. The zig-zag resilient stent can be a compression stent. Both the main tube and the side arm are formed from seamless tubular biocompatible graft material.

An expandable prosthetic device and method of delivery that allows the initial placement of multiple guidewires into selected target sites. The prosthesis includes a main body device. This main body device has a separate side branch guidewire lumen that passes through the main body device and through a side opening in the main body device. As the main body device is advanced, the side opening is self guided (by the side branch guidewire) and self-aligns to the side branch vessel ostium. The main body device is then deployed, leaving the side branch guidewire in place. A side branch device is then advanced along the side branch guidewire through the main body device, through the side wall opening and into the native side branch vessel. The side branch device can then be deployed to engage the main body device and the native side branch vessel.

A stent delivery system for treating bifurcations is provided. The system has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached side branch lumen, wherein the side branch lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of bifurcations and vessels.

An intraluminal device implantable in a body lumen having an atheroma therein in the vicinity of a side-branch vessel includes a mesh-like tube of bio-compatible material formed with liquid-permeable window openings. The mesh-like tube has an expanded condition in which the tube diameter is slightly larger than the diameter of the body lumen in which it is to be implanted, and the tube length is sufficient to cover the atheroma and the side-branch orifice, and to be anchored to the body lumen around the periphery of the atheroma, and a contracted condition wherein it is sufficiently flexible so as to be easily manipulatable through the body lumen to the site of the atheroma. The mesh-like tube, in its expanded condition, has window openings of a size and distribution such as to structurally stabilize the atheroma and to keep embolic material originating from the atheroma in place on the wall of the body lumen, while diverting embolic material of predetermined size present in the blood flowing through the mesh-like tube from the side-branch orifice, without substantially impeding the blood flow, or increasing the thrombogenitic properties, of the blood flowing into the side-branch orifice.

The present invention relates to low-cost, efficiently-manufactured, polymer-based products useful as roofing shingles and similar products. The inventive shingles are weatherproof, inexpensive to manufacture and durable, particularly as contrasted with conventional shingles in areas of the country subject to hail damage. The invention also includes a method of making such shingle products. In a preferred embodiment, products of this invention use rubber material as the polymer base in combination with specific types of polyolefins. The rubber material can be most efficiently provided by the use of crumb rubber particles from spent automobile tires and other recycled rubber debris which are readily available and of very low cost. The products will have an average life far greater than that of current commercial roofing shingles, which are made using fiberglass or asphalt.The products of the instant invention are produced by extrusion as a mixture of materials, which product and its materials can be summarized as follows as a roofing shingle product which comprises:a. one or more side-branched polyolefins as an elastomer;b. optionally a blend of additional synthetic polymers, such as ethylene and propylene, as a second elastomer; andc. a rubber fraction, preferably obtained in part from recycled spent automotive or truck tires, and similar sources of waste rubber (sometimes known as "crumb rubber"), ground or recycled into particles having a mesh size of from 10 to 30 (i.e., approximately from about 500 to about 1000 microns).