Other

Trivascular, Inc.

Boston Scientific Santa Rosa Corp.

Miravant Systems, Inc.

Patrick J Stephens

Michael V Chobotov

Robert G Whirley

Sarah Young

Cheng Li

Ross Heath

Mark Purter

Lloyd P Zenari

Li Cheng

Stent-grafts for treating thoracic aortic aneurysms and abdominal aortic aneurysms include graft portions having inflatable channels and graft extensions. The graft extensions include an undulating wire stent and porous, but substantially fluid impermeable, polytetrafluoroethylene (PTFE) graft materials.

Advanced kink-resistant stent graft

Advanced kink resistant stent graft

A joint and method for producing a joint in an endovascular graft. In one embodiment, a flap of a flexible material portion of an endovascular graft is folded about a portion of an expandable member to form a loop portion. The flap is secured in the loop configuration so that tensile force on the expandable member is transferred into a shear force on the fixed portion of the flap.

Endovascular graft joint and method for manufacture

A device and method for the manufacture of medical devices, specifically, endovascular grafts, or sections thereof. Layers of fusible material are disposed upon a shape forming member and seams formed between the layers in a configuration that can produce inflatable channels in desired portions of the graft. After creation of the seams, the fusible material of the inflatable channels may be fixed while the channels are in an expanded state. A five axis robotic seam forming apparatus may be used to create the seams in the layers of fusible material.

Apparatus for manufacturing an endovascular graft section

Method for manufacturing an endovascular graft section

Methods and devices for molding a desired configuration into an endovascular graft section that is made of a plurality of layers of fusible material. Layers of fusible material are disposed on a shape forming mandrel with seams in the layers that may be configured to produce inflatable channels. The graft section and shape forming mandrel can be placed in a mold which constrains an outer layer or layers of fusible material while the inflatable channels are being expanded and the fusible material of the graft section fixed. In some embodiments, the fusible material of the graft section may be fixed by a sintering process.

Method and apparatus for shape forming endovascular graft material

A method for grouting a decommissioned nuclear reactor containing residual water. A first, water-absorbent grout is used to grout the bottom portion of the reactor vessel. The water-absorbent grout is formed of cement and a water-absorbent particulate material, such as expanded perlite, exfoliated vermiculite or granulated bentonite. Excess water is absorbed by the particulate material, so that the residual water is incorporated in the fill material when it sets. A set retarder may be included to extend the time for uptake of residual water by the particulate material. Foam may also be included to reduce density and increase pumpability. The remaining, upper portion of the reactor vessel is grouted using lightweight cellular cement grout, lacking the water-absorbent particulate material, so that total weight of the fill remains low enough that the grouted vessel can be removed using the facility's installed crane system. Because the residual water is incorporated in the first, water-absorbent grout, the problem of residual water causing dissipation and collapse of the bubble structure in the lightweight cellular cement grout is obviated.

Method and compositions for grouting decommissioned nuclear reactor components

Methods and devices for molding a desired configuration into an endovascular graft section that is made of a plurality of layers of fusible material. Layers of fusible material are disposed on a shape forming mandrel with seams in the layers that may be configured to produce inflatable channel. The graft section and shape forming mandrel can be placed in a mold which contains an outer layer or layers of fusible material while the inflatable channels are being expanded and the fusible material of the graft section fixed. In some embodiments, the fusible material of the graft section may be fixed by a sintering process.

A method and composition for grouting a water-flooded cavity. Water and portland cement are combined to form a fluid cement slurry, the slurry being substantially free of sand or other aggregate material, and the slurry is then colloidally mixed so as to achieve an ultra-fine mixing thereof. An anti-washout admixture is mixed with the slurry in a predetermined amount, and a superplasticizing agent is also preferably included, both the anti-washout admixture and the superplasticizer agent being substantially free of defoaming agents. Finished foam is then mixed with the slurry to form a stable foamed cement grout which is injected into the water-flooded cavity. The anti-washout admixture is preferably a modified cellulose ether solution.

Method and composition for grouting water-flooded conduits

An optical light diffuser providing a generally cylindrical pattern of light emission. The diffuser is formed from an optical fiber operable to transmit the optical radiation from its proximal end to its distal end and having a guiding core and a cladding surrounding the core. The optical fiber has an abraded section at its distal end that allows light to escape uniformly over the abraded section forming a generally cylindrical pattern of diffuse light that surrounds the distal end of the optical fiber.

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Bellingham, WA, United States of America

Patrick J Stephens