Retrieval devices, methods, and systems
AssigneeBoston Scientific Scimed, Inc.
InventorMichael S.H. Chu
Life of this patent
Estimating the term…
Abstract
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.
Claims20
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.
A retrieval device including;
- a housing with an interface portion engageable with an insertion device;
- a plunger with a distal end rotatably and slidably mounted in the housing;
- a lumen extending through the housing and the plunger to receive a drive wire;
- a resilient element that biases the plunger proximally between a first position, wherein the resilient element is expanded, and a second position, wherein the resilient element is compressed;
- and
- at least one indicator spaced apart from the housing to provide a measure of change for the resilient element.
A method comprising:
- grasping a retrieval device including;
- 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;
- positioning the sheath lumen opening in a body cavity;
- moving the plunger towards the second position to extend the end effector towards a material in the body cavity;
- placing the material in the end effector;
- and
- moving the plunger towards the first position to capture the material in the end effector.
Dependencies are inferred from the claim text.