SCREW INSERTION INSTRUMENT
First Claim
Patent Images
1. An insertion instrument, comprising:
- an inner shaft having an elongate body with proximal and distal ends, the distal end of the inner shaft having a tip configured to engage a pedicle screw; and
a knob assembly, including;
a tubular body having proximal and distal ends defining a first longitudinal bore, the first longitudinal bore adapted to rotatably and translatably support the inner shaft, wherein the distal end of the tubular body is configured to engage a tulip of the pedicle screw; and
a knob having proximal and distal ends, the knob defining a second longitudinal bore, the second longitudinal bore configured to be slidably and non-rotatably supported by the proximal end of the tubular body, wherein the knob is selectively engageable with the inner shaft.
4 Assignments
0 Petitions
Accused Products
Abstract
An instrument for selectively coupling with a pedicle screw is disclosed. The instrument includes an inner shaft, wherein the distal tip is configured to engage a pedicle screw and the proximal end configured to be selectively engaged with a knob, and a knob assembly configured to advance over the inner shaft, wherein the distal end is configured to engage the tulip of the pedicle screw and the proximal end is configured to selectively engage the inner shaft. A method for selectively coupling the instrument to a pedicle screw is also disclosed.
-
Citations
18 Claims
-
1. An insertion instrument, comprising:
-
an inner shaft having an elongate body with proximal and distal ends, the distal end of the inner shaft having a tip configured to engage a pedicle screw; and a knob assembly, including; a tubular body having proximal and distal ends defining a first longitudinal bore, the first longitudinal bore adapted to rotatably and translatably support the inner shaft, wherein the distal end of the tubular body is configured to engage a tulip of the pedicle screw; and a knob having proximal and distal ends, the knob defining a second longitudinal bore, the second longitudinal bore configured to be slidably and non-rotatably supported by the proximal end of the tubular body, wherein the knob is selectively engageable with the inner shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for coupling an insertion instrument to a pedicle screw, the method comprising:
-
providing an insertion instrument having; an inner shaft having a tip configured to engage a pedicle screw; and a knob assembly configured to engage a tulip of the pedicle screw, wherein a proximal end of the knob assembly supports a knob, wherein the knob is selectively engageable with the inner shaft. inserting the tip of the inner shaft into a head of the pedicle screw; threading the knob assembly into the tulip of the pedicle screw; and advancing the knob distally such that the knob is in mechanical cooperation with the inner shaft. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification