Pull back stent delivery system with pistol grip retraction handle
First Claim
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, the catheter body having an axial guidewire lumen and a pull-wire lumen, the catheter body 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 of the catheter body;
a retractable outer sheath having proximal and distal ends and surrounding the medical device and containing the medical device in a delivery configuration where the medical device has a reduced radius along its entire axial length;
a proximal retraction handle connected to the proximal end of the catheter body, the handle including a pistol grip trigger engaged with a rachet mechanism, the ratchet mechanism being connected to a pull-wire, the pull-wire extending through the pull-wire lumen to the distal end of the catheter body where it is connected to the retractable outer sheath,whereby the medical device is delivered by squeezing the pistol grip trigger, which causes the ratchet mechanism to retract the pull-wire, which retracts the retractable outer sheath, enabling deployment.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
21 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, the catheter body having an axial guidewire lumen and a pull-wire lumen, the catheter body 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 of the catheter body; a retractable outer sheath having proximal and distal ends and surrounding the medical device and containing the medical device in a delivery configuration where the medical device has a reduced radius along its entire axial length; a proximal retraction handle connected to the proximal end of the catheter body, the handle including a pistol grip trigger engaged with a rachet mechanism, the ratchet mechanism being connected to a pull-wire, the pull-wire extending through the pull-wire lumen to the distal end of the catheter body where it is connected to the retractable outer sheath, whereby the medical device is delivered by squeezing the pistol grip trigger, which causes the ratchet mechanism to retract the pull-wire, which retracts the retractable outer sheath, enabling deployment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. 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, the catheter body having an axial guidewire lumen and a pull-wire lumen, the catheter body 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 of the catheter body; a retractable outer sheath having proximal and distal ends and surrounding the medical device and containing the medical device in a delivery configuration where the medical device has a reduced radius along its entire axial length; a proximal retraction handle connected to the proximal end of the catheter body, the handle including a pistol grip trigger engaged with a retraction device which is connected to a pull-wire, the pull-wire extending through the pull-wire lumen to the distal end of the catheter body where it is connected to the retractable outer sheath, the pistol grip trigger being actuated by squeezing, which retracts the pull-wire a predetermined amount; whereby the medical device is delivered by repeatedly squeezing the pistol grip trigger, which causes the controlled retraction of the pull-wire, which retracts the retractable outer sheath, enabling deployment.
-
Specification