RETRIEVAL SNARE DEVICE AND METHOD

摘要

The present invention relates generally to devices and methods for retrieving or manipulating objects within a lumen. More specifically, embodiments of the invention relate to devices and methods for retrieving or manipulating medical devices from a body lumen. One embodiment of the present invention provides a novel and improved retrieval snare and method of fabricating and using the same. The snare includes a snare wire, having a distal end and a proximal end, for use in the human anatomy, such as but not limited to blood vessels, pulmonary airways, reproductive anatomy, gastrointestinal anatomy, and organs such as the kidneys or lungs. The device enables a user to capture a foreign object located within the human anatomy, grasp said object in a controlled manner, and retrieve and remove said object from the human anatomy.

主权项

1. A device for retrieving an object from a lumen defined by a lumen wall, the device comprising:
a sheath configured to fit within the lumen, the sheath having a proximal end and a distal end; and a snare slidably disposed within the sheath, the snare having a shaft with a longitudinal axis, a proximal end and a distal end and a plurality of loop elements in connection with the distal end of the shaft, wherein each of the plurality of loop element has a proximal portion and a distal portion, wherein the plurality of loop elements has a collapsed configuration within the sheath and at least one deployed configuration outside the sheath, wherein the plurality of loop elements are configured to be deployed through an opening at the distal end of the sheath, wherein the at least one deployed configuration includes a fully deployed configuration in which the plurality of loop elements are deployed such that the distal portions of the loop elements are arranged in a substantially circumferential, planar and oblong configuration that is transverse to the longitudinal axis.