摘要:
A stent device delivery system, comprising: a stent device, and an outer sheath overlaying the stent device in a radially compact, delivery configuration of the stent device; the outer sheath is retractable to allow the stent device to radially expand to a deployed configuration; a pull member for pulling proximally on to retract the outer sheath; wherein a portion of the outer sheath is heat shrunk radially onto a relatively heat shrink resistant support member in order to capture a distal portion of the pull member radially between the outer sheath and the heat shrink resistant support member, wherein the outer sheath comprises an inner layer, an outer layer and a fold-over portion connecting the inner layer and the outer layer, the fold-over portion is axially movable relative to the stent device by moving the inner layer relative to the outer layer, thereby allowing the outer sheath to be retracted from the stent device and the outer layer is heat shrunk onto the heat shrink resistant support member to capture the pull member.
摘要:
A stent device delivery system and method of making. The stent device delivery system includes a stent device, an outer sheath overlaying the stent device in a radially compact, delivery configuration of the stent device, and a pull member. The outer sheath may include a first layer and a reinforcement layer that are laminated together, a portion of the pull member captured radially between the first layer and the reinforcement layer. At least a partial length of the captured portion of the pull member may be formed with a varying radial profile.
摘要:
A percutaneous trans-luminal catheter delivery system for an implant, the system comprising: a catheter shaft with a distal end to carry the implant and a proximal end, and an elongate housing at the proximal end that an operator can grasp when deploying the implant; the shaft having an inner push component which can push on the implant in a distal direction and an outer sheath component which radially surrounds the implant until said deployment of the implant into the bodily lumen, the outer sheath component being capable of being pulled proximally, from the housing, to deploy the implant; the housing being mounted on a proximal end portion of the push component and defining a channel; the housing containing a sheath slitter that is fixedly mounted relative to the length of the channel and that can slit the outer sheath as the outer sheath is caused to move proximally in the channel relative to the slitter.
摘要:
An implant delivery device preferably includes a first shaft having a proximal portion and a distal portion. The first shaft includes an outer surface and an inner surface defining a first lumen along a longitudinal axis. The distal portion includes a tip defining a taper in the distal direction toward the longitudinal axis and terminating at a distal opening. The device also includes a second shaft having a proximal portion and a distal portion and an inner surface defining a second lumen therebetween having a first cross-section. The second shaft is disposed within the first lumen such that the second lumen is generally coaxial with the first lumen to define a chamber. The distal portion of the second shaft terminates in a port having an opening in communication with the distal opening of the first shaft. The port preferably includes a second cross-section greater than the first cross-section.
摘要:
A stent device delivery system and method of making. The stent device delivery system includes a stent device and an outer sheath overlaying the stent device in a radially compact, delivery configuration of the stent device. The system also includes a pull member for pulling proximally on to retract the outer sheath, wherein a portion of the outer sheath is heat shrunk radially onto a relatively heat shrink resistant support member in order to capture a distal portion of the pull member radially between the outer sheath and the heat shrink resistant support member.
摘要:
A delivery device (1) for delivering a stent device (3) that is expandable from a radially reduced, delivery configuration to a radially expanded, deployed configuration. A retaining sheath (4) is disposed over the stent device for maintaining the stent device in the delivery configuration. A pull line (13) to be pulled upon is provided to retract the retaining sheath in a rolling manner such that the retaining sheath is folded back on itself to provide a radially inner sheath (7) of the retaining sheath, a radially outer sheath (8) of the retaining sheath and a fold portion (9) therebetween. The pull line is moveable by pulling thereon to move the outer sheath over the inner sheath and thus to move the fold portion axially relative to the stent device to retract the retaining sheath from over the stent device to release the stent device for expansion to the deployed configuration. The pull line extends axially along the stent device and joins the retaining sheath substantially at or beyond an axial end of the stent device in a pre-retracted configuration of the retaining sheath. The retaining sheath is made of a cold drawn plastic at least along the path of travel of the fold portion in retracting the retaining sheath from over the stent device.
摘要:
A method of moving a stent device into an outer sheath of a stent: device delivery system is disclosed. The stent device (4) is Crimped into a collapsed configuration onto the loading mandrel (6). The loading mandrel is pushed towards the outer sheath as the engaging surfaces (10) resist relative longitudinal movement between the stent device and the loading mandrel to move the stent device into the outer sheath (16). Upon entering the outer sheath, the stent device expands radially until radially constrained by the outer sheath.
摘要:
A catheter delivery device for a self-expanding stent including a distal catheter component, a distal sheath disposed over the stent, a proximal catheter shaft defining a tube; a proximal sheath connected to the distal sheath defining a lumen containing the catheter shaft, an open distal end suitable to receive the proximal end of the distal catheter component side-by-side with the distal end of the catheter shaft and; a casing tube surrounding the catheter shaft having a distal end telescopically receiving the proximal end of the distal sheath.
摘要:
There is disclosed herein a device (1) for moving an elongate member relative to an. elongate body through which it extends, the device comprising: a housing (10) connectable to the elongate body; a mover (20) associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body; and a pre-mover (40) for adjusting an elongate member connected to the mover relative to an elongate body connected to the housing in preparation for moving the elongate member with the mover. There is also disclosed a related surgical apparatus.