Adjustable length tap and method for drilling and tapping a bore in bone
OwnerRalph Fritz Zwirnmanninventor
Life of this patent
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Abstract
The present invention is directed to an adjustable self drilling tap assembly and method for drilling and tapping bores in bone for use in orthopedic procedures to treat bone. The adjustable length tap assembly includes a shaft having cutting threads for drilling holes in bone, a stop collar configured and dimensioned to be translatable along the longitudinal axis of the shaft, and a locking collar comprising a member configured and dimensioned to be received over at least a portion of the stop collar. The locking collar preferably is configured and dimensioned to engage with the stop collar to adjustably set the effective length for the cutting threads and to prevent movement of the stop collar along the longitudinal axis of the shaft.
Claims23
An adjustable length tap assembly for drilling threaded holes in bone comprising:
- a shaft having a longitudinal axis, a proximal end and a distal end, at least a portion of the shaft having cutting threads for drilling threaded holes in bone;
- a stop collar having proximal and distal ends, the stop collar configured and dimensioned to be translatable along the longitudinal axis of the shaft, and comprising a body having an inner surface and an outer surface, at least a portion of the inner surface being configured and dimensioned to engage with the shaft in at least one predetermined location;
- and
- a locking collar comprising a member configured and dimensioned to be received over at least a portion of the stop collar, wherein the locking collar is configured and dimensioned to engage with the stop collar to set at least one effective length for the cutting threads, and to prevent movement of the stop collar along the longitudinal axis of the shaft.
An adjustable length tap assembly for drilling holes in bone comprising:
- a shaft having a longitudinal axis, a proximal end and a distal end, at least a portion of the shaft having cutting threads for drilling holes in bone,
- a stop collar having proximal and distal ends, the stop collar configured and dimensioned to be translatable along the longitudinal axis of the shaft, and comprising a body having an inner surface and an outer surface, at least a portion of the inner surface being configured and dimensioned to engage with the shaft in at least one predetermined location;
- and
- a locking collar comprising a member configured and dimensioned to be received over at least a portion of the stop collar,
- wherein the locking collar is configured and dimensioned to engage with the stop collar to set at least one effective length for the cutting threads, and to prevent movement of the stop collar along the longitudinal axis of the shaft;
- and
- wherein at least a part of the locking collar is transparent.
An adjustable length tap assembly for drilling threaded holes in bone comprising:
- a shaft having a longitudinal axis, a proximal end and a distal end, at least a portion of the shaft having cutting threads for drilling threaded holes in bone;
- a stop collar having a proximal end and a distal end acting as a stop to set the effective length of the cutting threads, the stop collar configured and dimensioned to be translatable along the longitudinal axis of the shaft, and comprising a body having an inner surface and an outer surface, at least a portion of the inner surface being configured and dimensioned to engage with the shaft in at least one predetermined location;
- and
- a locking collar comprising a member configured and dimensioned to be received over at least a portion of the stop collar, wherein the locking collar is configured and dimensioned to engage with the stop collar to adjustably set the effective length for the cutting threads, and to prevent movement of the stop collar along the longitudinal axis of the shaft.
A surgical kit for drilling and tapping bone comprising:
- a plurality of shafts, each shaft having a longitudinal axis, a proximal end and a distal end, at least a portion of each shaft having cutting threads for drilling threaded holes in bone,
- a stop collar having proximal and distal ends, the stop collar configured and dimensioned to be translatable along the longitudinal axis of more than one of the shafts, and comprising a body having an inner surface and an outer surface, at least a portion of the inner surface being configured and dimensioned to engage with more than one shaft in at least one predetermined location;
- and
- a locking collar comprising a member configured and dimensioned to be received over at least a portion of the stop collar, wherein the locking collar is configured and dimensioned to engage with the stop collar to set at least one effective length for the cutting threads and to prevent movement of the stop collar along the longitudinal axis of the at least one shaft.
Dependencies are inferred from the claim text.