Controlled sequential deployment
First Claim
1. A stent graft introducer comprising a deployment catheter and a handle assembly;
- the deployment catheter comprising a pusher, a stent graft releasably retained onto the pusher, a temporary stent graft retention arrangement, a sheath coaxially around the pusher and enclosing the stent graft and a sheath hub to which the sheath is mounted proximate the distal end of the sheath;
the handle assembly comprising, a handle, at least one slide and a slider, the at least one slide able to slide to retract within the handle, the slider being longitudinally movable within the handle, the at least one slide including a releasable engagement arrangement to engage and retain the sheath hub to the at least one slide, a first removable stop arrangement engaged between the handle and the slider to prevent relative movement thereof and disposed within the handle assembly, the pusher extending longitudinally through the at least one slide and being mounted to the handle, the temporary stent graft retention arrangement including trigger wires extending through the pusher and the trigger wires being affixed to the slider;
whereby movement of the at least one slide with respect to the handle moves the sheath hub and thereby the sheath on the pusher to expose the stent graft until the at least one slide engages against first removable stop arrangement and causes disengagement of the first removable stop arrangement with the handle whereupon the disengagement of the first removable stop arrangement with the handle enables the slider to move with respect to the handle and the at least one slide thereby withdrawing the trigger wires and releasing the temporary stent graft retention arrangement.
3 Assignments
0 Petitions
Accused Products
Abstract
A stent graft introducer (1) which includes a handle arrangement which by telescopic movement of a slide or slide portions (104, 106) into a handle portion (100) causes controlled sequential deployment of a stent graft (14). Stops (218,217, 218, 219) ensure actions are carried out in a selected order. A sheath (116) of the introducer is fixed to a slide portion such that with retraction of the slide portion the sheath is withdrawn from a stent graft retained on the introducer and at a selected position trigger wires retaining the stent graft onto the introducer are also released. Interconnections between the slides and the handle are provided to prevent relative rotation and re-extension after full retraction.
21 Citations
17 Claims
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1. A stent graft introducer comprising a deployment catheter and a handle assembly;
- the deployment catheter comprising a pusher, a stent graft releasably retained onto the pusher, a temporary stent graft retention arrangement, a sheath coaxially around the pusher and enclosing the stent graft and a sheath hub to which the sheath is mounted proximate the distal end of the sheath;
the handle assembly comprising, a handle, at least one slide and a slider, the at least one slide able to slide to retract within the handle, the slider being longitudinally movable within the handle, the at least one slide including a releasable engagement arrangement to engage and retain the sheath hub to the at least one slide, a first removable stop arrangement engaged between the handle and the slider to prevent relative movement thereof and disposed within the handle assembly, the pusher extending longitudinally through the at least one slide and being mounted to the handle, the temporary stent graft retention arrangement including trigger wires extending through the pusher and the trigger wires being affixed to the slider;
whereby movement of the at least one slide with respect to the handle moves the sheath hub and thereby the sheath on the pusher to expose the stent graft until the at least one slide engages against first removable stop arrangement and causes disengagement of the first removable stop arrangement with the handle whereupon the disengagement of the first removable stop arrangement with the handle enables the slider to move with respect to the handle and the at least one slide thereby withdrawing the trigger wires and releasing the temporary stent graft retention arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16)
- the deployment catheter comprising a pusher, a stent graft releasably retained onto the pusher, a temporary stent graft retention arrangement, a sheath coaxially around the pusher and enclosing the stent graft and a sheath hub to which the sheath is mounted proximate the distal end of the sheath;
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13. A stent graft introducer comprising a deployment catheter and a handle assembly;
- the deployment catheter comprising a pusher, a stent graft releasably retained onto the pusher, a temporary stent graft retention arrangement, a sheath coaxially around the pusher and enclosing the stent graft and a sheath hub proximate the distal end of the sheath to which the sheath is mounted;
the handle assembly comprising, a handle, a first slide and a second slide, the first slide able to slide to retract within the second slide and the second slide able to slide to retract within the handle, and a slider, the slider being longitudinally movable within the handle, the first slide including a releasable engagement arrangement to engage and retain the sheath hub to the first slide, a first removable stop arrangement disposed within the handle assembly and engaged between the handle and the slider to prevent relative movement thereof, the pusher extending longitudinally through the first slide and the second slide and being mounted to the handle, the temporary stent graft retention arrangement including trigger wires extending through the pusher and the trigger wires being affixed to the slider;
whereby movement of the first slide with respect to the handle moves the sheath hub and thereby the sheath on the pusher to expose the stent graft until the first slide engages against first removable stop arrangement and causes disengagement of the first removable stop arrangement with the handle whereupon the disengagement of the first removable stop arrangement with the handle enables the slider to move with respect to the handle and the first slide to thereby withdraw the trigger wires and release the temporary stent graft retention arrangement. - View Dependent Claims (14, 17)
- the deployment catheter comprising a pusher, a stent graft releasably retained onto the pusher, a temporary stent graft retention arrangement, a sheath coaxially around the pusher and enclosing the stent graft and a sheath hub proximate the distal end of the sheath to which the sheath is mounted;
Specification