Methods and devices for percutaneous and surgical interventions

a technology of applied in the field of methods and devices for percutaneous and surgical interventions, can solve the problems of emboli formation during the course of the procedure, insufficient maintenance of the current vascular sheath in the blood vessel, and ischemic strok
US20050228402A1Inactive Publication Date: 2005-10-13HOFMANN LAWRENCE
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
HOFMANN LAWRENCE
Publication Date
2005-10-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

Methods and devices for performing percutaneous and surgical interventions. The devices comprising a tubular portion and retractable mechanism at the distal end of the tubular portion. The retractable mechanism prevents the device from pulling out of an anatomical structure during complex interventions, for example, when switching from an antegrade to a retrograde approach within a blood vessel, enables the use of a single sheath when declotting AV hemodialysis fistulas and can provide occlusion of blood flow during interventions and means of removal of debris or clot from the blood vessel.
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Description

[0001] The present invention generally relates to methods and devices for performing percutaneous and surgical interventions. More particularly, the present invention provides improved vascular sheaths and guide catheters and methods of use. BACKGROUND OF THE INVENTION

[0002] Vascular sheaths and guide catheters are used routinely in interventional radiology and interventional cardiology. The sheath serves as a conduit from the skin surface to the artery to allow passages of catheters, guide wires, stents, angioplasty balloons and similar instruments through the subcutaneous track without damaging the surrounding tissues or the blood vessel itself. The sheath is generally composed of four main components. The first is the tubular portion, which is the conduit from the skin surface into the blood vessel. The second portion is a hemostatic valve on the skin surface portion of the sheath. The third component is a sidearm tubing with a stopcock that allows the sheath to be flushed or as...

Claims

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