Delivery system for a self-expanding device for placement in a bodily lumen

US9387101B2 · kind B2 · utility

Assignee

• C.R. Bard, Inc. · US

Inventors

• Jurgen Dorn · Neulußheim, DE
• Martina Hoffman · Blankenloch, DE
• Thomas Tollner · Berlin, DE

Key dates

• Filing date: Oct 17, 2008
• Grant date: Jul 12, 2016
• Expiry date: May 4, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2230/0069
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A delivery system for a self-expanding device for placement in a bodily lumen, the system comprising a sheath that confines the device to a radially compact delivery disposition until the device is to be released into the lumen, the system having an elongate pull element to be pulled proximally from its proximal end, which pull element is arranged radially inside the sheath for pulling preferentially on a pull zone on the circumference of the distal end of the sheath, thereby to tear the sheath progressively along a tear line running the length of the sheath, starting at the distal end of the sheath, to release the device from the confining effect of the sheath, progressively, beginning at the distal end of the device and wherein the sheath is of polyethylene-terephthalate, cold drawn along its long axis, and in that the distal end of the sheath tapers inwardly to provide an inwardly tapered distal end of the system.