17 results about "Stent grafting" patented technology

A stent assembly that is assembled in situ by separate delivery of two nested stents is configured to maintain a lumen in a bifurcated vessel. The stent assembly includes a first stent with a first opening at a first end, a second opening at a second end, and an intermediate opening on a lateral side of the first stent between the first and second openings. The stent assembly further includes a second stent with a first opening at a first end, a second opening at a second end and an intermediate opening on a lateral side of the second stent between the first and second openings. A portion of the second stent with the intermediate opening is nested within the first stent.

A stent graft for treating an arterial aneurysm includes loops fixed to struts of stents, wherein the struts define distal and proximal apices. The ends of a ligature can be linked by a wire in a stent graft delivery system that threads anchor loops longitudinally spanning ends of the ligature to maintain the stent in a radially constricted position during delivery to the aneurysm. A delivery system and method for implanting a stent graft prosthesis includes and employs a torque component at a distal end of the stent graft prosthesis, whereby following advancement of the stent graft to a surgical site in a constrained or partially constrained configuration, torque is applied to the torque component to rotationally align the stent graft about a longitudinal axis of the stent graft, followed by deployment of the stent graft in correct rotational alignment. A delivery system and method of its use includes an apex capture assembly, a leg clasp, and a leg stop for capturing a stent graft during orientation and stabilization at an implantation site of a surgical site.

This invention provides a portable covered closure system for vascular ruptures, belonging to the field of medical device technology. The output and input ports at both ends of the hollow slide rail are coaxially mounted with the guide holes of the gun-shaped handle; the hollow puncture needle is fixedly connected to the output port; the guide tube of the damper is coaxially fixedly connected to the input port; the short side of the T-shaped sleeve is embedded in the slide rail groove, and the long side has a through-hole groove for the short side; one end of the L-shaped pressure rod is hinged to the bottom end of the T-shaped sleeve, the corner of the L-shaped pressure rod is fixedly connected to the reset device, and the other end of the L-shaped pressure rod is hinged to one end of the L-shaped pull rod; the other end of the L-shaped pull rod is hinged to the trigger; the trigger is hinged to the hollow slide rail; a locking block is placed in the short side groove of the T-shaped sleeve, and one end is connected to the other end of the L-shaped pressure rod via a spring; the covered stent assembly passes sequentially through the damper, the short side groove of the T-shaped sleeve, and finally into the hollow puncture needle. This invention allows for precise insertion of the covered stent by pulling the trigger and rapid release to seal the rupture of a large blood vessel.

A blood-clearing and lipid-lowering pill is composed of the following ingredients in the indicated weight ratios: Astragalus membranaceus 54-74, Salvia miltiorrhiza 54-74, Paeonia lactiflora 54-74, Carthamus tinctorius 33-53, Pheretima aspergillum 54-74, Hirudo medicinalis 33-53, Crataegus pinnatifida 54-74, Polygonum multiflorum 54-74, Cassia tora 54-74, Gastrodia elata 33-53, Uncaria rhynchophylla 54-74, Eucommia ulmoides 33-53, Achyranthes bidentata 54-74, Os draconis 54-74, Ostrea gigas 54-74, Prunella vulgaris 54-74, and Alisma plantago-aquatica 54-74. This invention can reduce blood viscosity to normal levels in a short period, allowing some patients with vascular stenosis exceeding 75% who require stents to avoid stent grafting, and enabling stroke patients to gradually recover their function.

A delivery catheter comprises an inner shaft and an outer sheath. A stent-graft is held on a region of the inner shaft. An enlarged diameter distal region of the outer sheath constrains the stent-graft. Its retraction allows the stent-graft to deploy. A finger wheel on a handle is used to retract the outer sheath and is coupled to a sliding block with cable(s). The sliding block is coupled to the outer sheath and is held within a sliding track. The wheel can be actuated to tension the cable(s) and deform latch(es) coupled to sliding block, freeing them from slot(s) in the sliding track and allowing retraction of the sliding block and the outer sheath. A reinforcement sleeve is coupled to a smaller diameter proximal region of the outer sheath. A gap between the outer sheath distal region and the reinforcement sleeve allows the distal outer shaft region to be retracted.

The application provides an aorta coarctation special balloon dilatation type auxetic structure partition stent, which comprises a framework and a covering film, the framework comprises an auxetic support area and two compliant areas, the auxetic support area is arranged between the two compliant areas, and the covering film is arranged on the auxetic support area and the compliant areas respectively; the auxetic support area comprises at least two circles of auxetic units, the at least two circles of auxetic units are arranged in the axial direction, and adjacent two circles of the auxetic units are connected, the auxetic unit comprises a plurality of polygonal meshes arranged in the circumferential direction, the polygonal mesh has a pair of concave corner portions, and the inside of at least part of the polygonal meshes is provided with a reinforcing ring, the reinforcing ring is connected with the pair of concave corner portions through reinforcing wires, and the geometric adaptability to a diseased blood vessel is improved.

Devices, systems, and methods for patient-specific, custom-designed fenestrated implants. Various examples involve abdominal aortic stent-grafts with custom-designed fenestration features for perfusion of the renal arteries, mesenteric arteries, and / or celiac trunk arteries.

A delivery system includes a shaft including first and second main lumens spaced from each other and forming a common U-shaped lumen at distal portions of the lumens, a delivery device including a first and second members disposed within the first and second main lumens and a manifold coupling the first and second members disposed in the common U-turn lumen, wherein proximal movement of the first member of the delivery device along a first longitudinal axis causes corresponding proximal movement of the manifold within the common U-turn lumen and corresponding proximal movement of the second member along a second longitudinal axis different than the first longitudinal axis.

Tissue anchoring devices including a radially expandable frame having a plurality of longitudinal struts and a plurality of deployable anchors configured to penetrate a stent graft and tissue, and systems for delivering and deploying the tissue anchoring devices at a target location are provided. The adjacent longitudinal struts are interconnected by a plurality of expandable struts, and a ring of these expandable struts may be angled radially outward relative to a remainder of the expandable struts in an expanded configuration. Each of the plurality of anchors may include one or more anti-buckling mechanisms to facilitate penetration into the graft / tissue.

We provide stent graft assemblies. [Solution] A stent graft for deployment in the aortic arch, comprising a proximal stent ring at the proximal end of at least a tubular graft material, at least one fenestration provided on the side wall of the tubular graft material, and an internal branch positioned within the lumen of the stent graft and extending from the fenestration. The fenestration-supporting stent ring supports the fenestration between two struts and the apex of the fenestration-supporting ring. The proximal stent ring has a plurality of stent units, each comprising a scallop unit, a support unit, and a body unit. The proximal apex of each scallop unit is located on the laterally extending edge of the scallop within a first periphery region, and the proximal apex of each support unit is located within a second periphery region. The first and second struts of each scallop unit are shorter than the first and second struts of each support unit.

This invention provides a method for implanting a stent graft system into a vessel, said vessel comprises a trunk, a positioning branch vessel, and a first branch vessel, said method comprises the steps of: a) providing said stent graft system; b) delivering said stent graft into said trunk; c) aligning said positioning assembly with said positioning branch vessel; d) releasing said stent graft, such that said stent graft conforms to inner wall of said trunk and said positioning assembly aligns with the root of said positioning branch vessel; e) delivering said first branch vessel stent graft into said first branch vessel via said first branch vessel fenestration assembly (11); f) releasing said first branch vessel stent graft, such that said second opening aligns with the root of said first branch vessel, said first sealing zone (111) forms a sealed connection with said first branch vessel stent graft.

A stent-graft system (100) includes a mainbody stent-graft (1), an outer branch (2), and at least one inner branch (3, 4). The mainbody stent-graft (1) is a tubular structure with covering membrane (102) on a surface thereof, forming a radially recessed concave portion (103) thereon. The outer branch (2) extends outside the mainbody stent-graft (1), with one end attached to a side wall of the concave portion (103). The inner branch (3, 4) is attached to the inside wall of the mainbody stent-graft (1), with an outer opening (31, 41) on the side wall of the concave portion (103), wherein the outer opening (31, 41) is distal to the inner opening (21).

In various designs, a device for the treatment of vascular disease includes a stent graft (100) with an external surface and at least two side-branching portals (110), each with a proximal and a distal end. Each distal end is virtually contiguous to the external surface of the stent graft. In other designs, the distal ends are usually more axially separated than the proximal ends.

In an exemplary embodiment a device for treating a patient, comprises a delivery catheter, a compressed expandable bifurcated stent having a main body portion, a first limb portion, and a second limb portion; and an expansion element pre-loaded in a portion of the stent or delivery device. In an exemplary embodiment, device for treating a patient, comprises a delivery catheter, a compressed expandable bifurcated stent having a main body portion, a first limb portion, and a second limb portion; and at least one balloon pre-loaded in a portion of the stent or delivery device.

The utility model discloses an aortic arch covered stent, including support body, support body is covered stent, and the recessed portion is formed to the inside recess of the outer wall of support body middle part from its one side, and the covered inner platform is equipped with in the recessed portion of support body, and the aortic arch covered stent still is equipped with at least one arch outer support, the covered outer overhang of covered inner platform is located in the arch outer support one end, and the other end is fixed with covered inner platform, to block covered inner platform to adhere aortic arch big bending side. The utility model has solved the cerebral ischemia, the need extracorporeal circulation, the difficulty of guide wire into branch stent, the branch stent easy to close, the operation difficulty, the need to block branch blood vessel, the chimney stent inner leakage and other problems in the process of aortic arch three branch luminal reconstruction.

An arthroscopic system for repairing torn ligaments is provided. An aspect of the present invention includes a scaffold that surrounds a graft, is attached to a fixation device by sutures, and is inserted into the repair site via an arthroscopic instrument. The scaffold, graft, and sutures are further fixed near or to the repair site via an arthroscopic instrument having an elongated delivery member containing the scaffold, graft, and sutures, prior to insertion of the scaffold, graft, and sutures into the repair site.