Surgical instrumentation and method for forming a passage in bone having an enlarged cross-sectional portion
First Claim
1. A surgical instrument, comprising:
- an elongate member extending along an axis; and
at least one cutting element engaged with said elongate member and being transitionable between a retracted configuration for extending through a first portion of a passage in bone and an expanded configuration for forming a second portion of the passage having an enlarged cross-section; and
wherein a portion of said elongate member defines a tapping thread configured to cut threads along the first portion of the passage, and wherein axial displacement of said at least one cutting element relative to said elongate member causes said at least one cutting element to transition between said retracted and expanded configurations to form said second portion of the passage having said enlarged cross-section.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument and method for forming a passage in bone having an enlarged cross-sectional portion is provided. The instrument includes an elongate member and a cutting element engaged thereto and transitionable between a retracted configuration for extending through a first portion of the passage and an expanded configuration for forming a second portion of the passage having an enlarged cross-section. In one embodiment, the cutting element is transitioned between the retracted and expanded configurations by axially displacing the cutting element relative to the elongate member. In another embodiment, the elongate member includes a tapping thread configured to cut threads along the first portion of the passage, and the cutting element is a blade configured to form the enlarged cross-section when transitioned to the expanded configuration. In another embodiment, the cutting element is arranged in an axial orientation when in the retracted configuration and an angular orientation when in the expanded configuration.
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Citations
38 Claims
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1. A surgical instrument, comprising:
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an elongate member extending along an axis; and
at least one cutting element engaged with said elongate member and being transitionable between a retracted configuration for extending through a first portion of a passage in bone and an expanded configuration for forming a second portion of the passage having an enlarged cross-section; and
wherein a portion of said elongate member defines a tapping thread configured to cut threads along the first portion of the passage, and wherein axial displacement of said at least one cutting element relative to said elongate member causes said at least one cutting element to transition between said retracted and expanded configurations to form said second portion of the passage having said enlarged cross-section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A surgical instrument, comprising:
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an elongate member;
a first cutting element disposed along said elongate member for forming a first portion of a passage in bone, said first cutting element comprising a tapping thread; and
a second cutting element disposed along said elongate member and being transitionable between a retracted configuration for extending through the first portion of the passage and an expanded configuration for forming a second portion of the passage having an enlarged cross-section. - View Dependent Claims (12, 13, 14)
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- 11. The instrument of claim 11, wherein said first cutting element comprises a distal end portion of said elongate member.
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15. A surgical instrument, comprising:
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an elongate member;
a first cutting element disposed along said elongate member for forming a first portion of a passage in bone, said first cutting element comprising a distal end portion of said elongate member, said distal end portion of said elongate member configured to be self-drilling and self-tapping; and
a second cutting element disposed along said elongate member and being transitionable between a retracted configuration for extending through the first portion of the passage and an expanded configuration for forming a second portion of the passage having an enlarged cross-section.
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16. A surgical instrument, comprising:
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an elongate member;
a first cutting element disposed along said elongate member for forming a first portion of a passage in bone; and
a second cutting element disposed alone said elongate member and being transitionable between a retracted configuration for extending through the first portion of the passage and an expanded configuration for forming a second portion of the passage having an enlarged cross-section; and
wherein said first cutting element comprises a tapping thread and wherein said second cutting element comprising a cutting blade. - View Dependent Claims (17)
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18. A surgical instrument, comprising:
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an elongate member;
a tapping thread defined along a portion of said elongate member for forming a threaded portion of a passage in bone; and
a cutting blade engaged with said elongate member and being transitionable between a retracted configuration for extending through the threaded portion of the passage and an expanded configuration for forming an enlarged cross-sectional portion of the passage. - View Dependent Claims (19, 20, 21)
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22. A surgical instrument, comprising:
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means for tapping threads along a portion of a passage in bone;
means for forming an enlarged cross-sectional portion of the passage; and
means for transitioning said means for forming between a retracted configuration for extending through the threaded portion of the passage and an expanded configuration for forming the enlarged cross-sectional portion of the passage.
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23. A surgical instrument, comprising:
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an elongate member extending along an axis and including;
a tapping portion formed alone a distal portion of said elongate member and configured to cut threads along a passage in bone; and
an expandable portion having at least one cutting element transitionable between an axial orientation configured to extend through the axial passage in bone and an angular orientation for enlarging a portion of the axial passage laterally adjacent said threads. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
wherein the axial passage is enlarged by applying a rotational force to said elongate member.
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31. The instrument of claim 30, further comprising a handle coupled to said elongate member, said handle configured to transmit said axial and rotational forces to said elongate member.
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32. The instrument of claim 23, further comprising a retention element configured to selectively maintain said at least one cutting element in said axial orientation.
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33. A surgical instrument, comprising:
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an elongate member extending along an axis;
a tapping element formed along a distal portion of said elongate member; and
at least one cutting element transitionable between a retracted configuration for extending through a passage in bone and an expanded configuration for enlarging a portion of the passage; and
wherein said tapping element is configured to cut threads along the passage, said at least one cutting element configured to enlarge said portion of the passage laterally adjacent said threads when transitioned to said expanded configuration. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification