摘要:
An endovascular delivery system includes an endovascular prosthesis, an elongate outer tubular sheath, an elongate inner tubular member, a handle assembly for moving the outer tubular sheath and the inner tubular member; an elongate guidewire slidably disposed within the inner tubular member; and an inflatable occlusion balloon disposed on a portion of the elongate guidewire. The occlusion balloon may be a non-compliant or a semi-compliant occlusion balloon. The occlusion balloon may be inflated to occlude a bodily lumen prior to deployment of the prosthesis.
摘要:
An endovascular delivery system includes an endovascular prosthesis, an elongate outer tubular sheath, an elongate inner tubular member, a handle assembly for moving the outer tubular sheath and the inner tubular member; an elongate guidewire slidably disposed within the inner tubular member; and an inflatable occlusion balloon disposed on a portion of the elongate guidewire. The occlusion balloon may be a non-compliant or a semi-compliant occlusion balloon. The occlusion balloon may be inflated to occlude a bodily lumen prior to deployment of the prosthesis.
摘要:
A tandem modular endograft includes a main elongate tubular graft body having at least one circumferential inflatable channel disposed towards a proximal portion of the graft body wall and a plurality of circumferential inflatable channels disposed towards a distal portion of the graft body wall. A proximal expansion anchor is disposed at or secured to a proximal neck portion of the graft body wall. First and second elongate tubular stent-graft extensions may be percutaneously disposed into a distal end of the tubular graft body. In combination, proximal portions of the first and second stent-graft extensions are conformable to a shape of the open lumen of the main graft body.
摘要:
A hybrid modular endovascular graft wherein a main graft is sized to span at least a portion of a target vessel lesion in a large percentage of patients. Graft extensions may be secured to the main graft to extend the main graft and provide a sealing function for some applications.
摘要:
An endovascular graft which is configured to conform to the morphology of the vessel to be treated and which is made from an inflatable structure having a proximal end with a proximal inflatable cuff and a distal end with a distal inflatable cuff. At least one elongated inflatable channel is disposed between and in fluid communication with fluid tight chambers of the inflatable cuffs which may contain rupture discs therebetween which can be configured to rupture at different pressures. A thin flexible barrier disposed between the inflatable cuffs and the elongated inflatable channel of the frame so as to form a tubular structure defining a longitudinal channel to confine a flow of blood or other fluid therethrough. The graft may also have an expansion member attached to the proximal end of the graft which is preferably made of linked expandable rings of pseudoelastic shape memory alloy which is self-expanding and prevents axial displacement of the graft once it is deployed.
摘要:
Some embodiments relate in part to endovascular prostheses and delivery catheter systems and methods for deploying same. Embodiments may be directed more specifically to graft bodies having self-expanding members, including inflatable graft bodies, and catheters and methods for deploying same within the body of a patient.
摘要:
A system and method of developing better-designed medical devices, particularly prosthesis and more particularly cardiovascular stents and endovascular grafts. The system comprises a geometry generator, a mesh generator, a stress/strain/deformation analyzer, and, optionally, a visualization tool. In one embodiment, the geometry generator receives three-dimensional volumetric data of an anatomical feature and generates a geometric model. The mesh generator then receives such geometric model of an anatomical feature or an in vitro model and a geometric model of a candidate medical device. In another embodiment, the mesh generator only receives a geometric model of the candidate medical device. Using the geometric model(s) received, the mesh generator creates or generates a mesh or a finite element model. The stress/strain/deformation analyzer then receives the mesh, and the material models and loads of that mesh. Using analysis, preferably non-linear analysis, the stress/strain/deformation analyzer determines the predicted stresses, strains, and deformations on the candidate medical device. Such stresses, strains, and deformations may optionally be simulated visually using a visualization tool.