Medical retrieval device and related methods of use

摘要

Embodiments of the invention are directed to a medical device for extracting material from a patient's body. The device may include a core element including a proximal portion extending substantially longitudinally and a distal portion capable of transforming between a coil configuration and a substantially straight configuration. An outer housing having a distal portion enclosing the distal portion of the core element is capable of attaining the coil and substantially straight configurations of the distal portion of the core element. The distal portions of the outer housing and the core element transform between the coil configuration and the substantially straight configuration when the core element is moved relative to the outer housing.