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US 2003/0114907 A1Published application
Snap-spin lead assembly and method therefor
AssigneeCardiac Pacemakers, Inc.
InventorsMatthew Laabs, Scott M. Partridge, Jon Schell, Walt Laroche
Life of this patent
Estimating the term…
Abstract
A lead assembly having a push-extendable active fixation mechanism. As the terminal end of the lead is pushed, the active fixation element extends from the lead body to a predetermined extension length. Optionally, a seal is formed at the distal end when the terminal is pushed and the terminal moves axially. A further option includes providing a snap fit connection with the terminal when the terminal end is pushed and the active fixation element is fully extended.
Claims36
A lead assembly comprising:
- a flexible lead body extending from a proximal end to a distal end, the lead body including one or more conductors disposed therein;
- an electrode assembly including at least one electrode electrically coupled with at least one conductor;
- a connector assembly coupled with the proximal end of the flexible lead body, the connector assembly including a terminal movable between a first axial position and a second axial position relative to the lead body after the connector assembly is coupled with the flexible lead body;
- an active fixation assembly coupled at the distal end of the flexible lead body, the active fixation assembly placed in a compression fit with the distal end of the lead body when the terminal is placed in the second axial position;
- and
- an inner assembly coupled with the terminal and the active fixation assembly, where the inner assembly is coupled between the terminal and the active fixation assembly.
3 more elements
A lead assembly comprising:
- a flexible lead body extending from a proximal end to a distal end, the lead body including one or more conductors disposed therein;
- an electrode assembly including at least one electrode electrically coupled with at least one conductor;
- a connector assembly coupled with the proximal end of the flexible lead body, the connector assembly including a terminal movable between a first axial position and a second axial position relative to the lead body after the connector assembly is coupled with the flexible lead body, the terminal coupled with a terminal member in a snap fit connection when the terminal is placed in the second position;
- an active fixation assembly coupled at the distal end of the flexible lead body;
- an inner assembly coupled with the terminal and the active fixation assembly, where the inner assembly is coupled between the terminal and the active fixation assembly;
- and
- the active fixation assembly includes a fixation helix extending outside of the lead body when the terminal is in the second axial position.
4 more elements
A lead assembly comprising:
- a flexible lead body extending from a proximal end to a distal end, the lead body including one or more conductors disposed therein;
- an electrode assembly including at least one electrode electrically coupled with at least one conductor;
- a connector assembly coupled with the proximal end of the flexible lead body, the connector assembly including a terminal movable between a first axial position and a second axial position relative to the lead body after the connector assembly is coupled with the flexible lead body;
- the terminal having a first snap fit coupling feature and the terminal member having a second snap fit coupling feature, and the first snap fit coupling feature configured to mate with the second snap fit coupling feature when the terminal is placed in the second position;
- an active fixation assembly coupled at the distal end of the flexible lead body;
- an inner assembly coupled with the terminal and the active fixation assembly, where the inner assembly is coupled between the terminal and the active fixation assembly;
- the active fixation assembly includes a fixation helix extending outside of the lead body when the terminal is in the second axial position;
- and
- the terminal pin is rotatable relative to the lead body after the terminal is placed in the second axial position, and rotation of the terminal pin causes the fixation helix to rotate.
6 more elements
A lead assembly comprising:
- a flexible lead body extending from a proximal end to a distal end, the lead body including one or more conductors disposed therein;
- a connector assembly coupled with the proximal end of the flexible lead body, the connector assembly including a terminal movable between a first axial position and a second axial position relative to the lead body after the connector assembly is coupled with the flexible lead body,
- a means for coupling the terminal in a snap fit connection with a portion of the lead assembly;
- an active fixation assembly coupled at the distal end of the flexible lead body, the active fixation assembly electrically coupled with at least one conductor;
- and
- an inner assembly coupled with the terminal and the active fixation assembly, where the inner assembly is coupled between the terminal and the active fixation assembly;
- and
- the active fixation assembly includes a fixation helix extending outside of the lead body when the terminal is in the second axial position, and the terminal is coupled with the snap fit connection.
5 more elements
A method comprising:
- pushing on a proximal end of a lead assembly, the lead assembly having
- a flexible lead body extending from a proximal end to a distal end, the lead body including one or more conductors disposed therein;
- an electrode assembly including at least one electrode electrically coupled with at least one conductor;
- a connector assembly coupled with the proximal end of the flexible lead body, the connector assembly including a snap fit terminal having a first position and a second position;
- and
- an active fixation assembly coupled at the distal end of the flexible lead body;
- moving the active fixation assembly axially from an unexposed position to an exposed position, and moving the active fixation assembly is conducted without applying torque to the terminal or the active fixation assembly;
- and
- placing a base of the active fixation assembly in a compression fit with the distal end of the lead body when the active fixation assembly is moved to the exposed position.
6 more elements
A method comprising:
- pushing on a proximal end of a lead assembly, the lead assembly having
- a flexible lead body extending from a proximal end to a distal end, the lead body including one or more conductors disposed therein;
- an electrode assembly including at least one electrode electrically coupled with at least one conductor;
- a connector assembly coupled with the proximal end of the flexible lead body, the connector assembly including a terminal movable between a first axial position and a second axial position relative to the lead body after the connector assembly is coupled with the flexible lead body, the terminal coupled with a terminal member in a snap fit connection when the terminal is placed in the second position;
- and
- an active fixation assembly coupled at the distal end of the flexible lead body, the active fixation assembly including a fixation helix;
- moving the terminal from the first axial position to the second axial position;
- and
- placing the terminal in a snap fit connection with a terminal member, and pushing the fixation helix from a retracted position to an extended position.
6 more elements
Dependencies are inferred from the claim text.