Transverse cavity device and method
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Accused Products
Abstract
A surgical instrument for creating and preparing a cavity in a bony intervertebral body is provided with asymmetrical cutting structures. These asymmetrical cutting structures selectively open a cavity which has a relatively large surface area in the vertical direction. In one embodiment, the cutting structure includes a shearing element that sweeps out a cutting arc that is larger than the instrument delivery area.
153 Citations
54 Claims
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1-8. -8. (canceled)
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9. A tool for creating a cavity in a bone comprising:
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an elongated body having a distal end and having a proximal end, said body having an exterior diameter defining a tool body area for the tool;
a shearing element anchored to said distal end of said delivery tube by an anchor element;
said anchor element and said distal end of said delivery tube together forming a hinge to permit and to restrict said shearing element to move in a transverse plane;
whereby the motion of said shearing element in said transverse plane sweeps out a cutting arc, said cutting arc defining an area larger than said delivery area;
an actuator located within said delivery tube and connected to said shearing element;
whereby motion imparted to said actuator rod moves said shearing element through said cutting arc. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A tool for creating a cavity in a bone comprising:
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an elongated body having a distal end and having a proximal end, said body having an exterior diameter defining a tool body area for the tool;
at least one shearing element anchored to said distal end of said delivery tube by an anchor element;
said anchor element and said distal end of said delivery tube together forming a hinge to permit and to restrict said shearing element to move in a transverse plane;
whereby the motion of said shearing element in said transverse plane sweeps out a cutting arc, said cutting arc defining an area larger than said delivery area;
an actuator located within said delivery tube and connected to said shearing element;
whereby motion imparted to said actuator rod moves said shearing element through said cutting arc. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A tool for creating a cavity in a bone comprising:
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an elongated body having a distal end and having a proximal end, said body having a exterior diameter defining a tool body area for the tool;
a pair of shearing elements including a first shearing element and a second shearing element anchored to said distal end of said delivery tube by an anchor element;
said anchor element and said distal end of said delivery tube together forming a hinge to permit and to restrict each of said shearing elements to move in a transverse plane;
whereby the motion of either of said shearing elements in said transverse plane sweeps out a cutting arc, said cutting arc defining an area larger than said delivery area;
a first actuator rod located within said delivery tube and connected to said first shearing element;
a second actuator rod located within said delivery tube and connected to said second shearing element;
whereby motion imparted to said actuators rods moves said shearing elements through said cutting arc independently. - View Dependent Claims (41, 42, 43, 44)
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45. A kit of parts for use in treating compression fractures of a bone, comprising:
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a tool adapted to form a transverse cavity within said bone, said tool having an extent configured for moving within said bone in a transverse plane; and
an expandable device adapted for insertion into said transverse cavity and for applying a force within said bone upon expansion in a direction substantially normal to said transverse plane. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification