Catheter Device
AssigneeAngiomed GmbH & Co. Medizintechnik KG
InventorsJurgen Dorn, Martin Wuebbeling
Life of this patent
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Abstract
A catheter device having a shaft that extends from a proximal end to a distal end to carry on its distal end a self-expanding implant for intraluminal advance on a guidewire and delivery of the implant to an implant site by proximal withdrawal of a sheath that lies radially outside the implant in the catheter, the catheter including a first shaft element to pull the sheath proximally and a second shaft element to push the implant distally to prevent the implant moving proximally with the sheath when the sheath is pulled proximally, wherein the second shaft element carries a stopper for abutting the implant, the stopper including proximal and distal portions having different radiopacities.
Claims17
A catheter, comprising:
- a shaft with proximal and distal ends, a first shaft element, and a second shaft element;
- a self-expanding metal implant mounted on the distal end of the shaft;
- and
- a sheath that lies radially outside the implant and radially inside the catheter;
- wherein the second shaft element comprises a stopper having:
- a stopper proximal portion having a radiopacity different from the radiopacity of the implant;
- and
- a stopper distal portion with an annulus abutting the proximal end of the implant and having a radiopacity different from the stopper proximal portion and different from the radiopacity of the implant;
- wherein the implant is adapted for guidewire delivery to an intraluminal implant site and is adapted for site placement by proximal withdrawal of the sheath;
- and
- wherein the first shaft element is adapted to pull the sheath proximally and the second shaft element is adapted to push the implant distally.
A method of making a system for intraluminal delivering of a self-expanding implant, comprising:
- providing a catheter device that carries the implant on its distal end within a sheath that is withdrawn proximally to release the implant while a stopper restrains the implant from moving proximally with the sheath;
- and
- providing a stopper proximal portion that is fixed to a shaft component of the catheter device and a stopper distal component with an axial length that can be selected to complement the length of the selected implant, so that an aggregate axial length of the implant and the stopper distal portion remains substantially constant through the selection of implants of various lengths, the stopper distal portion having a proximally facing abutment surface for abutment with the stopper proximal portion of the stopper and a distal-facing abutment surface for abutment with the implant.
Dependencies are inferred from the claim text.