Device for delivering and deploying intraluminal devices

摘要

A device for delivering and deploying an intraluminal device such as a stent. The device has a guide sheath with a movable tip element, preferably in the form of an inflatable balloon, at its distal end that facilitates insertion of the guide sheath. The intraluminal device is carried on a catheter within the sheath. The sheath may be formed from a very thin flexible material so that a smaller introducer and incision in the patient may be used. The internal pressure of the sheath may be varied to alter pushability and flexibility of the sheath. The tip element thus preferably forms a fluid tight seal with the distal end of the guide sheath. A handle is provided to hold the catheter stationary while the guide sheath is retracted to expose the intraluminal device for deployment. This minimizes the likelihood that movement of the sheath will displace the intraluminal device after it has been properly positioned.