Aspects of retrieval devices, methods, and systems are disclosed. One aspect is a retrieval device comprising: a housing； a plunger with a distal end rotatably and slidably mounted in the housing； a sheath extending distally from the housing to define a sheath lumen with a sheath lumen opening； a drive wire extending distally from the plunger, through the housing, and into the sheath lumen； an end effector on a distal end of the drive wire； and a resilient element that biases the plunger proximally between a first position, wherein the end effector is proximal of the sheath lumen opening, and a second position, wherein at least a portion of the end effector is distal of the sheath lumen opening. Related methods and systems are also disclosed.
