摘要:
A stent graft (1) has at least one fenestration (13) or low profile side arm (34). A guide assembly (17) surrounds the fenestration or low profile side arm. The guide assembly has a continuous wall extending laterally away from the outer surface of the stent graft. The continuous wall is substantially elliptical or circular and extends distally of the fenestration at a distal end of the wall and being coincident with a proximal part (25) of the periphery of the fenestration or low profile side arm at a proximal end of the wall (23). The wall acts to define a guide area to guide a flexible probe extended from a side branch vessel to enter the fenestration or low profile side arm. Where there are two fenestrations or low profile side arms there can be a single continuous wall (50) around both or separate walls for each. The wall may have a peripheral wire reinforcement (19).
摘要:
A stent graft (1) has at least one fenestration (13) or low profile side arm (34). A guide assembly (17) surrounds the fenestration or low profile side arm. The guide assembly has a continuous wall extending laterally away from the outer surface of the stent graft. The continuous wall is substantially elliptical or circular and extends distally of the fenestration at a distal end of the wall and being coincident with a proximal part (25) of the periphery of the fenestration or low profile side arm at a proximal end of the wall (23). The wall acts to define a guide area to guide a flexible probe extended from a side branch vessel to enter the fenestration or low profile side arm. Where there are two fenestrations or low profile side arms there can be a single continuous wall (50) around both or separate walls for each. The wall may have a peripheral wire reinforcement (19).
摘要:
A pre-loaded stent graft delivery device and stent graft, the stent graft delivery device. The stent graft has at least one fenestration or side arm and the fenestration is preloaded with an indwelling guide wire. Indwelling access sheaths are provided within auxiliary lumens of a pusher catheter and dilators are preloaded into the access sheaths along with the indwelling guide wire. A handle assembly at a distal end of the guide wire catheter. The handle includes a multiport manifold with access ports to the auxiliary lumens in the pusher catheter. Upon deployment of the stent graft into the vasculature of a patient, the indwelling guide wire can be used to facilitate catheterization of a side branch or target vessel through the fenestration or be used to stabilize the access sheath during catheterization, advancement of the access sheath into the target vessel and deployment of a covered or uncovered stent therein through the access sheath.
摘要:
A stent graft introducer has a pusher, a nose cone, a region between the pusher and the nose cone for a stent graft, a sleeve extending over the pusher and proximally to the nose cone to cover the stent graft when retained in the region. An indwelling auxiliary catheter with a pre-curved proximal end is fitted into the introducer. The nose cone has an elongate groove and the auxiliary catheter has its proximal end in the elongate groove. In a partially retracted position of the sleeve the curved proximal end of the indwelling auxiliary catheter is exposed and uncovered by the sleeve and in an advanced position of the sleeve the curved proximal end of the indwelling auxiliary catheter is straightened, extends along the length of the groove in the nose cone and is covered by the sleeve.
摘要:
A hybrid stent graft device for treatment of a Type A dissection having a first tubular portion for placement into the ascending aorta and a second tubular portion for extending around the thoracic arch and down the descending aorta is disclosed. The first tubular portion is connectable to the aorta between the sinotubular junction and the brachiocephalic artery so that it essentially replaces the ascending aorta. A temporary bypass tube allows perfusion during an operation. The second tubular portion has an elongate recess outside of the second tubular portion and an aperture defining a fluid flow path into the recess. The recess is intended to engage an outer curve of the thoracic arch to enable blood flow into the arteries of the thoracic arch. An introduction device in combination with the hybrid stent graft described above is also disclosed.
摘要:
A pre-loaded stent graft delivery device and stent graft, the stent graft delivery device. The stent graft has at least one fenestration or side arm and the fenestration is preloaded with an indwelling guide wire. Indwelling access sheaths are provided within auxiliary lumens of a pusher catheter and dilators are preloaded into the access sheaths along with the indwelling guide wire. A handle assembly at a distal end of the guide wire catheter. The handle includes a multiport manifold with access ports to the auxiliary lumens in the pusher catheter. Upon deployment of the stent graft into the vasculature of a patient, the indwelling guide wire can be used to facilitate cathertisation of a side branch or target vessel through the fenestration or be used to stabilise the access sheath during catheterisation, advancement of the access sheath into the target vessel and deployment of a covered or uncovered stent therein through the access sheath.
摘要:
A hybrid stent graft device for treatment of a Type A dissection having a first tubular portion for placement into the ascending aorta and a second tubular portion for extending around the thoracic arch and down the descending aorta is disclosed. The first tubular portion is connectable to the aorta between the sinotubular junction and the brachiocephalic artery so that it essentially replaces the ascending aorta. A temporary bypass tube allows perfusion during an operation. The second tubular portion has an elongate recess outside of the second tubular portion and an aperture defining a fluid flow path into the recess. The recess is intended to engage an outer curve of the thoracic arch to enable blood flow into the arteries of the thoracic arch. An introduction device in combination with the hybrid stent graft described above is also disclosed.
摘要:
A stent graft introducer has a pusher, a nose cone, a region between the pusher and the nose cone for a stent graft, a sleeve extending over the pusher and proximally to the nose cone to cover the stent graft when retained in the region. An indwelling auxiliary catheter with a pre-curved proximal end is fitted into the introducer. The nose cone has an elongate groove and the auxiliary catheter has its proximal end in the elongate groove. In a partially retracted position of the sleeve the curved proximal end of the indwelling auxiliary catheter is exposed and uncovered by the sleeve and in an advanced position of the sleeve the curved proximal end of the indwelling auxiliary catheter is straightened, extends along the length of the groove in the nose cone and is covered by the sleeve.
摘要:
A stent graft (2) for placement in the thoracic arch of a patient has a first tubular body portion (6) with a first lumen therein for placement in the ascending aorta of a patient and a second tubular body portion (8) to extend along the thoracic arch and down the descending aorta. The second tubular body portion is of a lesser diameter than the first tubular body portion. There is a step portion (10) between the first body portion and the second body portion. The step portion is joined to and continuous with the first portion and the second portion. A first side of each of the first body portion, the step portion and the second body portion are substantially aligned so that there is a step (18) defined on a second side opposite to the first side of the body portion. There is an aperture (30) in the step portion and an internal tube (32) extending from the aperture towards the first body portion. The internal tube is divided along part of its length into at least two smaller internal tubes (34, 36) with the smaller internal tubes opening into the first lumen.
摘要:
A stent graft (2) for placement in the thoracic arch of a patient has a first tubular body portion (6) with a first lumen therein for placement in the ascending aorta of a patient and a second tubular body portion (8) to extend along the thoracic arch and down the descending aorta. The second tubular body portion is of a lesser diameter than the first tubular body portion. There is a step portion (10) between the first body portion and the second body portion. The step portion is joined to and continuous with the first portion and the second portion. A first side of each of the first body portion, the step portion and the second body portion are substantially aligned so that there is a step (18) defined on a second side opposite to the first side of the body portion. There is an aperture (30) in the step portion and an internal tube (32) extending from the aperture towards the first body portion. The internal tube is divided along part of its length into at least two smaller internal tubes (34, 36) with the smaller internal tubes opening into the first lumen.