Retrieval snare device and method
First Claim
1. A method for capturing an object in a lumen defined by a lumen wall, the method comprising:
- advancing a sheath within the lumen, the sheath having a proximal end and a distal end, until the distal end of the sheath is proximal to the object;
deploying a plurality of loop elements of a snare out of the distal end of the sheath in a propeller-like configuration, wherein each of the plurality of the loop elements emanates from and returns to the distal end of the sheath, and wherein at least some of the plurality of loop elements comprise a first portion disposed out of the distal end of the sheath and extending distally of the distal end of the sheath and a second portion disposed out of the distal end of the sheath and extending proximally of the distal end of the sheath when the snare is fully deployed; and
capturing a portion of the object with at least one of the plurality of loop elements.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
17 Claims
-
1. A method for capturing an object in a lumen defined by a lumen wall, the method comprising:
-
advancing a sheath within the lumen, the sheath having a proximal end and a distal end, until the distal end of the sheath is proximal to the object; deploying a plurality of loop elements of a snare out of the distal end of the sheath in a propeller-like configuration, wherein each of the plurality of the loop elements emanates from and returns to the distal end of the sheath, and wherein at least some of the plurality of loop elements comprise a first portion disposed out of the distal end of the sheath and extending distally of the distal end of the sheath and a second portion disposed out of the distal end of the sheath and extending proximally of the distal end of the sheath when the snare is fully deployed; and capturing a portion of the object with at least one of the plurality of loop elements. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for capturing an object in a lumen defined by a lumen wall, the method comprising:
-
advancing a sheath within the lumen, the sheath having a proximal end and a distal end, until the distal end of the sheath is proximal the object; deploying a plurality of loop elements of a snare out of the distal end of the sheath until the loop elements achieve substantially full apposition with the circumference of the lumen wall, wherein each of the plurality of loop elements emanates from and returns to the distal end of the sheath, and wherein at least some of the plurality of loop elements comprise a first portion disposed out of the distal end of the sheath and extending distally of the distal end of the sheath and a second portion disposed out of the distal end of the sheath and extending proximally of the distal end of the sheath when the snare is fully deployed; and capturing a portion of the object with at least one of the plurality of loop elements. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification