Surgical Instrumentation for Forming Threaded Openings in Bone
First Claim
1. Surgical instrumentation for forming a threaded opening in bone, comprising:
- a guide instrument including a guide tube defining a circular passage extending along a central longitudinal axis, said guide tube further defining a first circumferentially-facing stop face positioned at a circumferential location about said circular passage; and
a tap instrument positioned within said circular passage of said guide tube and extending generally along said central longitudinal axis, said tap instrument including a distal thread cutting portion adapted to cut an internal thread along an opening in bone during rotation of said tap instrument about said central longitudinal axis, said tap instrument defining a second circumferentially-facing stop face; and
wherein said second circumferentially-facing stop face of said tap instrument is positioned in abutting engagement with said first circumferentially-facing stop face of said guide tube to prohibit further rotation of said tap instrument relative to said guide tube to prevent damage to the internal thread by continued rotation of said thread cutting portion.
2 Assignments
0 Petitions
Accused Products
Abstract
Surgical instrument for forming threaded openings in bone including a guide instrument and a tap instrument. The guide instrument includes a guide tube defining a circular passage and a first rotational stop member arranged generally along a first radial axis and defining a first circumferentially-facing stop face. The tap instrument is positioned within the circular passage of the guide tube and includes a distal thread cutting portion and a second rotational stop member arranged generally along a second radial axis and defining a second circumferentially-facing stop face. The second circumferentially-facing stop face of the second rotational stop member is positioned in abutting engagement with the first circumferentially-facing stop face of the first rotational stop member to prohibit further rotation of the tap instrument relative to the guide tube to prevent damage to internal threads formed in bone by continued rotation of the tap instrument.
69 Citations
21 Claims
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1. Surgical instrumentation for forming a threaded opening in bone, comprising:
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a guide instrument including a guide tube defining a circular passage extending along a central longitudinal axis, said guide tube further defining a first circumferentially-facing stop face positioned at a circumferential location about said circular passage; and a tap instrument positioned within said circular passage of said guide tube and extending generally along said central longitudinal axis, said tap instrument including a distal thread cutting portion adapted to cut an internal thread along an opening in bone during rotation of said tap instrument about said central longitudinal axis, said tap instrument defining a second circumferentially-facing stop face; and wherein said second circumferentially-facing stop face of said tap instrument is positioned in abutting engagement with said first circumferentially-facing stop face of said guide tube to prohibit further rotation of said tap instrument relative to said guide tube to prevent damage to the internal thread by continued rotation of said thread cutting portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification