Retrieval devices and related methods of use
AssigneeBoston Scientific Scimed, Inc.
InventorPrasopporn K. Rohan
Life of this patent
Estimating the term…
Abstract
According to one aspect, a retrieval device may include a sheath having a distal end. The retrieval device may also include an end effector movable relative to the distal end of the sheath. The end effector may include first and second arms. The first arm may include a first opening at a distal portion of the first arm. The second arm may include a second opening at a distal portion of the second arm. The end effector may also include a third arm. The third arm may be slidably received in the first and second openings. A distal portion of the third arm may form at least part of a loop. The loop may extend through the first and second openings.
Claims18
A retrieval device, comprising:
- a sheath having a distal end;
- and
- an end effector movable relative to the distal end of the sheath, the end effector including:
- a first arm including a first opening at a distal portion of the first arm;
- a second arm including a second opening at a distal portion of the second arm;
- a third arm slidably received in the first and the second openings;
- and
- a fourth arm slidably received in the first and second openings;
- wherein a distal portion of the third arm and a distal portion of the fourth arm form a loop, a size of the loop being adjustable by movement of the end effector relative to the sheath;
- wherein the third arm and the fourth arm are movable relative to the sheath without moving the first arm and the second arm.
A retrieval device, comprising:
- a sheath having a distal end;
- and
- an end effector movable relative to the distal end of the sheath, the end effector including a first arm, a second arm, a third arm, and a fourth arm, wherein first and second openings on the first and second arms, respectively, of the end effector each receive the third arm and the fourth arm of the end effector:
- wherein each of the third arm and the fourth arm includes a pair of proximal portions connected by a curved and unconstrained distal end, the curved and unconstrained distal ends of the third and fourth arms collectively forming a loop;
- wherein the end effector is configured to transition between an expanded configuration and a collapsed configuration by moving the end effector relative to the sheath, a size of the loop being reduced by retracting the first and second arms proximally within the sheath;
- and
- wherein the curved and unconstrained distal ends of the third and fourth arms are configured to pivot about the first and second openings when the end effector transitions to the collapsed configuration.
A retrieval device, comprising:
- a sheath defining a distal end;
- an end effector movable relative to the distal end of the sheath, the end effector including:
- a first arm including a first opening at a distal portion of the first arm;
- a second arm including a second opening at a distal portion of the second arm;
- a third arm received in the first and the second openings, the third arm being configured to slide through the first opening and the second opening in a first direction when the end effector moves proximally relative to the sheath;
- and
- a fourth arm received in the first and second openings, the fourth arm being configured to slide through the first opening and the second opening in a second direction opposite the first direction when the end effector moves proximally relative to the sheath;
- wherein a distal portion of the third arm and a distal portion of the fourth collectively form a loop, a size of the loop being adjustable by transitioning between an expanded configuration and a collapsed configuration by moving the end effector relative to the sheath;
- wherein the third arm and the fourth arm are movable relative to the sheath without moving the first arm and the second arm.
Dependencies are inferred from the claim text.