摘要:
A delivery system for endovascularly delivering a prosthesis along a guidewire to a curved implantation site includes a delivery device having control handle and an inner lumen slidably disposed in the handle between a retracted position and an extended position. The inner lumen has a distal end and a tip at the distal end of the inner lumen. An intermediate lumen is slidably disposed about the inner lumen and has a distal end. A relatively flexible prosthesis sheath is connected to the distal end of the intermediate lumen and a relatively stiff outer lumen is axially fixedly connected to the handle about the intermediate lumen. The outer lumen has a length only long enough to be inserted in a patient's aorta no further than the patient's celiac axis.
摘要:
A delivery system for endovascularly delivering a prosthesis along a guidewire to a curved implantation site includes a delivery device having control handle and an inner lumen slidably disposed in the handle between a retracted position and an extended position. The inner lumen has a distal end and a tip at the distal end of the inner lumen. An intermediate lumen is slidably disposed about the inner lumen and has a distal end. A relatively flexible prosthesis sheath is connected to the distal end of the intermediate lumen and a relatively stiff outer lumen is axially fixedly connected to the handle about the intermediate lumen. The outer lumen has a length only long enough to be inserted in a patient's aorta no further than the patient's celiac axis.
摘要:
A delivery system and method for implanting a stent graft prostheses 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 and, consequently, to the stent graft 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, and subsequent retraction of the delivery device from the deployed stent graft and the subject. The torque component includes a pushrod and at least two arms.
摘要:
An aortic graft assembly (10) includes a tubular component (12) that defines a wall aperture (20) having a proximal end (22) that extends perpendicular to a major longitudinal axis (24) of the tubular aortic component, and a tunnel graft (28) connected to the wall (18) of the tubular aortic component and extending from the wall aperture toward a proximal end (14) of the tubular aortic component. The method for delivery of the aortic graft assembly includes delivering the aortic graft assembly through the wall aperture and into interfering relation with the tunnel graft.
摘要:
A method for implanting a prosthesis centrally within a curved lumen includes loading a prosthesis into a delivery sheath, advancing the sheath in a patient towards the curved lumen to place at least the proximal end of the prosthesis within the curved lumen, and centering the proximal end of the prosthesis and/or the distal end of the sheath within the curved lumen. In a first advancing step, the outer catheter containing the inner sheath is advanced together towards the curved lumen to a location proximal of the curved lumen and, in a second advancing step, the inner sheath containing the prosthesis is advanced into the curved lumen to place at least the proximal end within the curved lumen while the outer catheter substantially remains at the location. After centering, the proximal end of the prosthesis is deployed centered within the curved lumen.
摘要:
A method for implanting a prosthesis centrally within a curved lumen includes loading a prosthesis into a delivery sheath, advancing the sheath in a patient towards the curved lumen to place at least the proximal end of the prosthesis within the curved lumen, and centering the proximal end of the prosthesis and/or the distal end of the sheath within the curved lumen. In a first advancing step, the outer catheter containing the inner sheath is advanced together towards the curved lumen to a location proximal of the curved lumen and, in a second advancing step, the inner sheath containing the prosthesis is advanced into the curved lumen to place at least the proximal end within the curved lumen while the outer catheter substantially remains at the location. After centering, the proximal end of the prosthesis is deployed centered within the curved lumen.