Expandable structures for deployment in interior body regions
First Claim
1. A tool for treating bone comprisinga structure having an outer diameter and having opposite ends spaced along an axis, the structure being adapted to be inserted into bone and having a collapsed condition, a wrapped condition, and an expanded condition, a first mechanism coupled to the structure operable in a first direction to move the structure from the collapsed condition to the wrapped condition by wrapping the structure inwardly about the axis to lengthen the structure and thereby decrease the outer diameter of the structure to permit passage through a cannula and operable in a second direction to return the structure from the wrapped condition to the collapsed condition, and a second mechanism different than the first mechanism coupled to the structure and operable to expand the structure outwardly about the axis from the collapsed condition to the expanded condition.
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Accused Products
Abstract
An expandable structure carried at the end of a catheter tube assembly can be contracted and/or wrapped to present a reduced profile during deployment and/or removal from a targeted tissue site.
642 Citations
22 Claims
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1. A tool for treating bone comprising
a structure having an outer diameter and having opposite ends spaced along an axis, the structure being adapted to be inserted into bone and having a collapsed condition, a wrapped condition, and an expanded condition, a first mechanism coupled to the structure operable in a first direction to move the structure from the collapsed condition to the wrapped condition by wrapping the structure inwardly about the axis to lengthen the structure and thereby decrease the outer diameter of the structure to permit passage through a cannula and operable in a second direction to return the structure from the wrapped condition to the collapsed condition, and a second mechanism different than the first mechanism coupled to the structure and operable to expand the structure outwardly about the axis from the collapsed condition to the expanded condition.
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12. A tool for treating bone comprising
a structure having an outer diameter and having opposite ends spaced along an axis, the structure being adapted to be inserted into bone and undergo expansion outwardly about the axis in cancellous bone, and a mechanism coupled to the structure operable to wrap the structure inwardly about the axis to lengthen the structure and thereby decrease the outer diameter of the structure to permit passage through a cannula, and a catheter tube having a proximal catheter end and a distal catheter end, wherein the opposite ends of the structure include a proximal structure end and a distal structure and, wherein the proximal structure end is coupled to the distal catheter end, and the distal structure end extends beyond the distal catheter end, wherein the mechanism includes a stylet rotatable within the catheter tube having a far end coupled to the distal structure end, wherein the mechanism includes an actuator on the proximal catheter end coupled to a near end of the stylet to rotate the stylet within the catheter tube and affect rotation of the distal structure end about the axis while the proximal structure end is held substantially free of rotation by the distal catheter end, and wherein the actuator includes a cap coupled to the near end of the stylet and a fitting on the proximal catheter end to which the cap is threaded for rotation.
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17. A tool for treating bone comprising
a structure having an outer diameter and having opposite ends spaced along an axis, the structure being adapted to be inserted into bone and having a collapsed condition, a contracted condition, and an expanded condition, a first mechanism coupled to the structure operable in a first direction to move the structure from the collapsed condition to the contracted condition by contracting the structure inwardly about the axis to lengthen the structure and thereby decrease the outer diameter of the structure to permit passage through a cannula and operable in a second direction to return the structure from the contracted condition to the collapsed condition, and a second mechanism different than the first mechanism coupled to the structure and operable to expand the structure outwardly about the axis from the collapsed condition to the expanded condition.
Specification