摘要:
An introducer deploys an endoluminal device in a distal location from a proximal location. The introducer comprises a retrograde portion, an anterograde portion axially moveable relative to the retrograde portion, a shaft having a distal tip and an anterograde sheath attached to the distal tip, and anchoring means in at least one of the retrograde portion or the anterograde portion for anchoring the device during deployment from its proximal end to its distal end. An inner sheath may be mounted concentrically over the shaft with the endoluminal device mounted concentrically over the inner sheath. The anchoring device may comprise an inflatable balloon mounted radially inside the retrograde portion, a tether, or an extended portion of the endoluminal device confined by a notch in the interface of two sheaths in the retrograde portion of the introducer, or may comprise a holder in the anterograde portion.
摘要:
An introducer deploys an endoluminal device in a distal location from a proximal location. The introducer comprises a retrograde portion, an anterograde portion axially moveable relative to the retrograde portion, a shaft having a distal tip and an anterograde sheath attached to the distal tip, and anchoring means in at least one of the retrograde portion or the anterograde portion for anchoring the device during deployment from its proximal end to its distal end. An inner sheath may be mounted concentrically over the shaft with the endoluminal device mounted concentrically over the inner sheath. The anchoring device may comprise an inflatable balloon mounted radially inside the retrograde portion, a tether, or an extended portion of the endoluminal device confined by a notch in the interface of two sheaths in the retrograde portion of the introducer, or may comprise a holder in the anterograde portion.
摘要:
An introducer deploys an endoluminal device in a distal location from a proximal location. The introducer comprises a retrograde portion, an anterograde portion axially moveable relative to the retrograde portion, a shaft having a distal tip and an anterograde sheath attached to the distal tip, and anchoring means in at least one of the retrograde portion or the anterograde portion for anchoring the device during deployment from its proximal end to its distal end. An inner sheath may be mounted concentrically over the shaft with the endoluminal device mounted concentrically over the inner sheath. The anchoring device may comprise an inflatable balloon mounted radially inside the retrograde portion, a tether, or an extended portion of the endoluminal device confined by a notch in the interface of two sheaths in the retrograde portion of the introducer, or may comprise a holder in the anterograde portion.
摘要:
A method for deployment of a multi-part endoluminal device includes deploying a first portion of the device sequentially from its distal end to its proximal end, then deploying a second portion of the device sequentially from its proximal end to its distal end so that its distal end overlaps the first portion proximal end. The system for deploying the endoluminal device includes a first introducer loaded with a first endoluminal device and adapted to deploy the first device sequentially from the distal end to the proximal end, and a second introducer loaded with a second endoluminal device and adapted to anchor the second endoluminal device proximal end while deploying the second endoluminal device sequentially from the proximal end to the distal end.
摘要:
An introducer deploys an endoluminal device in a distal location from a proximal location. The introducer comprises a retrograde portion, an anterograde portion axially moveable relative to the retrograde portion, a shaft having a distal tip and an anterograde sheath attached to the distal tip, and anchoring means in at least one of the retrograde portion or the anterograde portion for anchoring the device during deployment from its proximal end to its distal end. An inner sheath may be mounted concentrically over the shaft with the endoluminal device mounted concentrically over the inner sheath. The anchoring device may comprise an inflatable balloon mounted radially inside the retrograde portion, a tether, or an extended portion of the endoluminal device confined by a notch in the interface of two sheaths in the retrograde portion of the introducer, or may comprise a holder in the anterograde portion.
摘要:
An endoluminal graft is wrapped axially upon itself to form a low profile, which facilitates endoluminal delivery. Apparatus and systems for making and using such grafts are also disclosed.
摘要:
A delivery system comprising an endoluminal device, an outer sheath that radially surrounds the endoluminal device, a pusher positioned at one end of the endoluminal device, and a linkage between the pusher and the outer sheath that coordinates movement of the outer sheath in a first direction with simultaneous movement of the pusher in a second direction opposite the first direction. This delivery system is particularly useful for endoluminal devices that foreshorten, and may comprise the outer sheath moving a first distance (d1) and the pusher moving a second distance (d2), where d2/d1 is approximately equal to the foreshortening ratio. The delivery system of this invention enables a foreshortening device, such as a vena cava filter, or stent, graft, or combination thereof, to be deployed with its end in a precise deployment location without foreshortening causing the end to move from the deployment location as the stent expands.
摘要:
A device for removing a thrombus filter from a blood vessel is disclosed. A device in accordance with the present invention includes a shaft having a proximal end, a distal end, and a lumen extending therethrough, a wire having a first end and a second end, the wire being partially disposed within the lumen of the shaft, a portion of the wire extending beyond the distal end of the shaft and forming a loop, and a portion of the wire extending beyond the proximal end of the shaft.
摘要:
An apparatus for holding stacks of plastic packaging bags, including a wicket and a securing device for securing the packaging bags to the wicket. The wicket includes a pair of elongated leg members, and a cross-member connecting together the leg members. Each of the leg members has a series of locking portions for selectively locking the securing device to the leg members at pre-determined distances from the cross-member. The securing device includes a pair of securing buttons having a bore sized and shaped to be slidable onto the leg members over the locking portions. The locking portions are pairs of aligned locking tabs shaped to prevent the securing buttons from sliding back off the leg members. A cartridge comprising a plurality of wickets coupled together by break away tabs can be used to automate a bag-stacking operation. The wicket and securing buttons are made to be recycled along with the bags lips left after bags are torn off, reducing waste. The wicket and buttons also provide improved locking of bags, and one wicket is capable of holding varying quantities of bags.
摘要:
Systems and methods for measuring a load in a structural element include placing at least one actuator and sensor on the structural element. The actuator is capable of exciting a wave of a predetermined frequency in the structural element and the sensor is capable of sensing the wave excited in the structural element. A computer control unit is applied to operate the actuator so as to excite a wave in the structural member in at least a first frequency, and to operate the sensor so as to measure at least one of a change in a resonance frequency in the structural element as a result of a change in loading on the structural member and a change in phase angle in the wave sensed by the sensor as a result of a change in loading on the structural member.