Target tissue localization assembly and method
First Claim
1. A target tissue localization assembly comprising:
- an anchor assembly comprising;
an elongated placement element having a placement element distal end and a placement element proximal end;
an elongated anchor actuator element having an actuator element distal end and an actuator element proximal end, extending along the placement element, the actuator element distal end movable relative to the placement element distal end; and
a radially expandable tissue anchor operably coupleable to the placement and anchor actuator elements, movable from a radially contracted condition to a radially expanded, deployed condition when the distal ends are moved relative to one another from a first state to a second state; and
a lock engageable between the actuator element and the placement element when the anchor is in the deployed condition to at least temporarily prevent collapse of the anchor by preventing movement of the distal ends back to the first state.
2 Assignments
0 Petitions
Accused Products
Abstract
A target tissue localization assembly includes a radially expandable tissue anchor connected to the distal ends of an anchor assembly and an elongated anchor actuator element. A lock, engageable between the actuator element and the placement element, may be used to prevent collapse of the anchor from its radially expanded state. A sheath may be slidably mounted over the anchor assembly. The sheath and the anchor assembly may be configured to permit the sheath to move in a proximal direction, relative to the anchor assembly, past a chosen location while preventing the sheath from moving past the chosen location in a distal direction.
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Citations
57 Claims
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1. A target tissue localization assembly comprising:
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an anchor assembly comprising;
an elongated placement element having a placement element distal end and a placement element proximal end;
an elongated anchor actuator element having an actuator element distal end and an actuator element proximal end, extending along the placement element, the actuator element distal end movable relative to the placement element distal end; and
a radially expandable tissue anchor operably coupleable to the placement and anchor actuator elements, movable from a radially contracted condition to a radially expanded, deployed condition when the distal ends are moved relative to one another from a first state to a second state; and
a lock engageable between the actuator element and the placement element when the anchor is in the deployed condition to at least temporarily prevent collapse of the anchor by preventing movement of the distal ends back to the first state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A target tissue localization assembly comprising:
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an elongated placement element having a placement element distal end and a placement element proximal end;
an elongated anchor actuator element having an actuator element distal end and an actuator element proximal end, extending along the placement element, the actuator element distal end movable relative to the placement element distal end;
a radially expandable tissue anchor having a distal anchor portion connected to the distal end of the anchor actuator element and a proximal anchor portion, at least a portion of the anchor positionable at an extended position relative to the distal end of the placement element;
a movement-limiting element engageable between the placement element and the proximal anchor portion when at said extended position so to at least hinder proximal movement of the proximal anchor portion when said actuator element is pulled proximally to permit radial expansion of the anchor to a deployed condition; and
locking means for at least temporarily preventing collapse of the anchor when the anchor is in the deployed condition. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A target tissue localization assembly comprising:
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anchor assembly means for locating a tissue anchor at a target site and selectively expanding the anchor from a radially contracted state to a radially expanded state; and
locking means for at least temporarily preventing the anchor from moving from the radially expanded state to the radially contracted state.
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34. A method for localizing target tissue at a target site of a patient comprising:
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percutaneously positioning a tip of an anchor assembly at or near a target site of a patient, the anchor assembly comprising;
an elongated placement element;
an elongated anchor actuator element extending along the placement element; and
a radially expandable tissue anchor operably coupled to the placement and anchor actuator elements;
placing the anchor in a radially expanded condition by moving at least portions of the anchor actuator and placement elements relative to one another in a first direction; and
at least temporarily preventing movement of said portions of the anchor actuator and placement elements relative to one another in a second direction opposite said first direction thereby maintaining the anchor in the radially expanded condition. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41)
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42. A target tissue localization assembly comprising:
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an anchor assembly comprising;
an elongated placement element;
an elongated anchor actuator element extending along the placement element; and
a radially expandable tissue anchor operably coupleable to the placement and anchor actuator elements so to move from a radially contracted condition to a radially expanded condition when at least portions of the anchor actuator element and the placement element are moved relative to one another;
a sheath slidably mounted over the anchor assembly;
a chosen one of the placement element and the sheath comprising a surface interruption at a first location along said chosen one;
the other of the placement element and the sheath comprising a surface interruption engagement element at a second position along said other; and
the surface interruption element and the surface interruption engagement element being configured to (a) permit the surface interruption engagement element to move past the surface interruption in a first direction but (b) not permit the surface interruption engagement element to move past the surface interruption in a second direction opposite the first direction. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A target tissue localization assembly comprising:
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anchor assembly means for locating a tissue anchor at a target site and selectively expanding the anchor from a radially contracted state to a radially expanded state;
sheath means slidably mounted over the anchor assembly means; and
means for (a) permitting a first location along the sheath means to move in a first direction past a second location along the anchor assembly means while (b) preventing the first location from moving past the second location in a second direction opposite the first direction.
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55. A method for localizing target tissue at a target site of a patient comprising:
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percutaneously positioning a tip of an anchor assembly, slidably housed within a sheath assembly, at a target position relative to a target site of a patient, the anchor assembly comprising;
an elongated placement element;
an elongated anchor actuator element extending along the placement element, said anchor actuator element comprising the tip; and
a radially expandable tissue anchor connected to the placement and anchor actuator elements;
maintaining the sheath assembly at a fixed position relative to the patient following the positioning step;
sliding the placement element distally within the sheath assembly from a first position to a second position;
preventing proximal movement of the placement element relative to the sheath assembly from the second position to the first position; and
placing the anchor in a radially expanded condition by moving the anchor assembly relative to the placement element. - View Dependent Claims (56, 57)
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Specification