Pull back stent delivery system with pistol grip retraction handle

• US 20010027323A1
• Filed: 05/30/2001
• Published: 10/04/2001
• Est. Priority Date: 11/27/1996
• Status: Active Grant

• Current Assignee: Robert B. Devries, Roy Sullivan III
• Original Assignee: Robert B. Devries, Roy Sullivan III
• Inventors: Sullivan, Roy III, DeVries, Robert B.
• Granted Patent: US 6,391,051 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod

Abstract

A stent delivery system for delivering a self-expanding stent to a predetermined location in a vessel includes a catheter body having an axial guidewire lumen and a pull-wire lumen. A medical device such as a self-expanding stent is held in a reduced delivery configuration for insertion and transport through a body lumen to a predetermined site for deployment. The stent is carried axially around the catheter body near its distal end and held in its reduced configuration by a retractable outer sheath. A proximal retraction handle is connected to the proximal end of the catheter body and includes a pistol grip trigger engaging a rachet mechanism, which is connected to a pull-wire which extends through the pull-wire lumen and is connected to the retractable outer sheath.

Claims

1. A delivery system for delivering a medical device to a predetermined location in a body lumen, the delivery system comprising:

a catheter body having proximal and distal ends for transporting a medical device to a predetermined site in a body lumen for deployment;

a medical device having proximal and distal ends carried by the catheter body near the distal end, and

a retractable outer sheath having proximal and distal ends and surrounding the medical device and maintaining the medical device in a delivery configuration where the medical device has a reduced radius along its entire axial length, wherein the proximal end of the retractable outer sheath is tapered to form a smooth atraumatic transition between the retractable outer sheath and the catheter body which aids in extraction of the delivery system from a body lumen.