Articulated cavity creator
First Claim
Patent Images
1. A device for creating a cavity in an interior body, the device comprising:
- an articulated tip assembly comprising a coil enclosure securing at least one pair of curving elements therein, wherein said curving elements each define a male end, a female end, and at least one channel;
a shaft coupled to the articulated tip assembly;
a lever assembly coupled to the shaft, the lever assembly including a lever rotating about a pivot pin, the lever including an elongated pressure surface extending towards a proximal end of the device, the pivot pin located opposite a longitudinal axis of the device from the pressure surface;
a midline cable connected between said lever assembly and said articulated tip assembly, said midline cable running through said channel to mate said male and female ends of said curving elements within said coil;
an off-center cable coupled to the articulated tip assembly and the lever assembly such that variable action of the lever causes the articulated tip assembly to selectively approximate a curve;
wherein rotation of the device causes the articulated tip assembly to rotate within the interior body.
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Abstract
Disclosed herein are devices for use through a cannula to create cavities within interior body regions. When deployed, the distal end of several such devices extend beyond the distal end of the catheter and can then be selectively curved into a shaped compression surface that, when articulated, creates a void within the interior body. This compression surface may then be withdrawn back into the cannula for removal and to make way for bone cement that, in certain instances, may be introduced through the same cannula.
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Citations
20 Claims
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1. A device for creating a cavity in an interior body, the device comprising:
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an articulated tip assembly comprising a coil enclosure securing at least one pair of curving elements therein, wherein said curving elements each define a male end, a female end, and at least one channel; a shaft coupled to the articulated tip assembly; a lever assembly coupled to the shaft, the lever assembly including a lever rotating about a pivot pin, the lever including an elongated pressure surface extending towards a proximal end of the device, the pivot pin located opposite a longitudinal axis of the device from the pressure surface; a midline cable connected between said lever assembly and said articulated tip assembly, said midline cable running through said channel to mate said male and female ends of said curving elements within said coil; an off-center cable coupled to the articulated tip assembly and the lever assembly such that variable action of the lever causes the articulated tip assembly to selectively approximate a curve; wherein rotation of the device causes the articulated tip assembly to rotate within the interior body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of creating a cavity in a target body using an articulated cavity creator, the method comprising:
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providing an articulated tip assembly in the articulated cavity creator by connecting male and female ends of curving elements in tension along a midline cable within a coil enclosure; inserting the articulated tip assembly into the target body; curving and rotating the articulated tip assembly by activating a lever pressure surface of a lever of the articulated cavity creator, the lever pressure surface rotating about a pivot pin located opposite a longitudinal axis of the device from the lever pressure surface, the lever couple to an off-center cable connected to the tip assembly such that variable action of the lever pressure surface causes the tip assembly to selectively approximate a curve; and withdrawing the articulated tip assembly. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification