摘要:
A modular handle assembly for a prosthesis delivery device is disclosed. The modular handle assembly comprises a stationary main handle (10) having a proximal end and a distal end. A first handle extends proximally from the main handle (10) and is rotationally moveable relative to the main handle (10), the first handle having a proximal end and a distal end and wherein a rotational interface is located at the distal end. A second handle extends distally from the main handle (10) and is rotationally moveable relative to the main handle (10), the second handle having a proximal end and a distal end and wherein a rotational interface is located at the proximal end. The proximal end of the main handle (10) comprises a first rotational interface that is configured to engage with a rotational interface at the distal end of the first handle and wherein the distal end of the main handle (10) comprises a second rotational interface that is configured to engage with the rotational interface at the proximal end of the second handle.
摘要:
A handle assembly for a prosthesis delivery device is disclosed. The handle assembly comprises a stationary main handle (10) having a proximal end and a distal end and an outer surface extending therebetween. A first helical groove is formed in at least a portion of the outer surface of the main handle and a first trigger wire actuation mechanism disposed about the main handle (10) and rotatably moveable relative to the main handle. A first trigger wire is operatively connected to the first trigger wire actuation mechanism, the first trigger wire having a prosthesis capture condition and a prosthesis release condition. Movement of the first trigger wire actuation mechanism causes movement of the first trigger wire thereby moving the first trigger wire from the prosthesis capture condition to the prosthesis release condition. Additional trigger wire actuation mechanisms operatively connected to one or more additional trigger wires may also be disposed about the main handle (10).
摘要:
A controlled expansion stent graft delivery system has an adjustment configuration in which a retractable sheath is at a retracted position out of contact with a stent graft, but expansion of the stent graft is controlled by a control tether, which has a middle segment wrapped around a fabric tube of the stent graft. The stent graft changes diameter responsive to a tension level in the control tether. At least one of an orientation and a position of the stent graft may be adjusted during controlled expansion via the control tether.
摘要:
Prostheses and methods of making the same are provided. The prosthesis (10) has an internal branch configuration. A trough (50) or branch opening is at least partially defined by a trough wall (52) extending into a main lumen from a sidewall (25) of the prosthesis. The internal branch extends from the trough (50) within the main lumen towards one of the outflow end of the graft body (20) in an helical, retrograde arrangement. Other arrangements are described. The prosthesis (10) may include a scalloped fenestration (80) having a width larger than the trough (50). The trough (50) may be positioned along a tapered region (20B) of the prosthesis. The trough (50) and internal branch may be made from the same graft material. The trough (50) and internal branch, in addition to the main graft body, may be made from the same graft material.
摘要:
A stent graft (20) includes a fabric tube (22) supported by and attached to a stent (21). A plurality of streamers (30) are attached at one end to an outer surface of the fabric tube (22) and have an unattached coagulant end that is free to move with respect to the fabric tube (22) within a sac of an aneurism to promote coagulation of blood, such as to inhibit Type II endoleaks. Each of the streamers (30) has a length dimension that is greater than both a width dimension and thickness dimension. The streamers (30) may comprise at least one of a extracellular matrix material, a hydrogel and embolic fibers.
摘要:
An endoluminal prosthesis assembly includes a delivery system having an introduction end, an operator end, and a stent graft retention region. An endoluminal prosthesis (22, 122, 222) is disposed at the stent graft retention region. The prosthesis (22, 122, 222) comprises a tubular body, an inner lumen extending between proximal and distal ends of the tubular body, at least one fenestration (30, 130, 230) disposed in a sidewall of the body, and an internal branch at least partially formed with the sidewall of the body and disposed in parallel alignment with the prosthesis (22, 122, 222). A guide wire (38, 138, 238) having a first end and a second end is pre-loaded with the prosthesis (22, 122, 222) in the delivery system. At least a portion of the guide wire (38, 138, 238) is disposed within the internal branch and the inner lumen of tubular body of the prosthesis (22, 122, 222) prior to delivery of the prosthesis (22, 122, 222) and during delivery and deployment of the prosthesis (22, 122, 222). The second end of the guide wire (38, 138, 238) extends distally from the distal opening of the tubular body, and the first end of the guide wire (38, 138, 238) extends through the internal branch and the at least one fenestration (30, 130, 230) such that a portion of the guide wire (38, 138, 238) is externally disposed relative to the prosthesis (22, 122, 222). The externally disposed portion of the guide wire is bent back on itself to form an externally disposed loop.
摘要:
A prosthesis delivery device includes an inner cannula, a positioner disposed coaxially over a first portion of the inner cannula, a concentric cannula disposed coaxially over a second portion of the inner cannula, and a tip assembly (18) disposed over a third portion of the inner cannula. A distal end of the concentric cannula is attached to a proximal end of the positioner. The tip assembly (18) comprises a distal tip segment and a proximal tip segment, with the distal tip segment attached to a proximal end of the concentric cannula and the proximal tip segment attached to a proximal end of the inner cannula. A prosthesis is carried on the concentric cannula and a sheath is mounted coaxially over the prosthesis. The sheath comprises a split defining a proximal sheath segment and a distal sheath segment. A proximal end of the proximal sheath segment is attached to the proximal tip segment.