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US 2010/0305625 A1Published application
Surgical instrument for fixing a clamp to a bone fixation device
AssigneeSynthes USA, LLC
InventorsKyle Kuntz, Josef Gabelberger, Zoher Bootwala, Edward McShane
Life of this patent
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Abstract
A surgical instrument for moving a clamp relative to a bone anchor to properly position and secure the clamp to the bone anchor. The surgical instrument including a housing, a socket assembly, a manipulating assembly, a gripping assembly and a reduction assembly.
Claims26
A surgical instrument configured to fix a clamp to a bone fixation device, the surgical instrument comprising:
- a housing including a body member extending around a longitudinal axis and a bore extending through the body member along the longitudinal axis;
- a socket assembly including a socket shaft, a bore extending through the socket shaft, and a drive member which receives the clamp, wherein a proximal end of the socket shaft engages the housing and a distal end of the socket member contains the drive member;
- a manipulating assembly that defines a proximal end and a distal end, wherein the distal end of the manipulating assembly engages the housing;
- a gripping assembly disposed in the bore of the housing;
- and
- a reduction assembly attached to the housing and moveably coupled to the gripping assembly;
- wherein movement of the reduction assembly causes the gripping assembly to translate within the bore of the housing along the longitudinal axis.
4 more elements
A surgical instrument for fixing a clamp to a bone fixation device, the instrument comprising:
- a housing including a body member with an inner bore;
- a socket assembly including a socket shaft, an inner bore and a drive feature, wherein a proximal end of the distal socket member engages the housing and a distal end of the socket member contains the drive feature;
- a manipulating assembly including a torque member, wherein a proximal end of the manipulating assembly contains the torque member and the distal end of the manipulating assembly engages the housing;
- an interference fitting, the interference fitting moveably attached to the housing;
- and
- a reduction assembly attached to the housing and coupled to the interference fitting;
- wherein movement of the reduction assembly causes the interference fitting to slide along the body member of the housing in a direction away from the socket assembly.
4 more elements
A bone anchor extension member comprising:
- a shaft that includes:
- (i) a distal portion which is threaded and configured to engage corresponding threads of a bone fixation device, the distal portion including a stop to limit insertion depth of the bone anchor extension member into the bone fixation device;
- (ii) an opposed proximal portion including an engagement assembly, the engagement assembly comprising a plurality of tapered segments arranged in series wherein each of the tapered segments is narrower toward its proximal end and wider at its distal end and the tapered segments are configured to engage with an interference member in a surgical instrument;
- and
- (iii) an intermediate portion connected between the distal portion and the proximal portion;
- wherein the engagement assembly has a maximum outer diameter configured to pass through an inner bore of a spinal fixation clamp.
3 more elements
A kit comprising:
- a surgical instrument configured to fix a clamp to a bone fixation device, the surgical instrument comprising:
- a housing including a body member extending around a longitudinal axis and a bore extending through the body member along the longitudinal axis;
- a socket assembly including a socket shaft, a bore extending through the socket shaft, and a drive member which receives the clamp, wherein a proximal end of the socket shaft engages the housing and a distal end of the socket member contains the drive member;
- a manipulating assembly that defines a proximal end and a distal end, wherein the distal end of the manipulating assembly engages the housing;
- a gripping assembly disposed in the bore of the housing;
- and
- a reduction assembly attached to the housing and moveably coupled to the gripping assembly;
- wherein movement of the reduction assembly causes the gripping assembly to translate within the bore of the housing along the longitudinal axis;
- and
- a plurality of bone anchor extension members, each bone anchor extension member comprising:
- a shaft that includes:
- (i) a distal portion which is threaded and configured to engage corresponding threads of a bone fixation device, the distal portion including a stop to limit insertion depth of the bone anchor extension member into the bone fixation device;
- (ii) an opposed proximal portion including an engagement assembly, the engagement assembly having an outer diameter smaller than the bore of the housing and configured to be engaged by the gripping assembly;
- and
- (iii) an intermediate portion connected between the distal portion and the proximal portion;
- wherein the engagement assembly has a maximum outer diameter configured to pass through an inner bore of a spinal fixation clamp.
13 more elements
A kit comprising:
- a surgical instrument for fixing a clamp to a bone fixation device, the instrument comprising:
- a housing including a body member with an inner bore;
- a socket assembly including a socket shaft, an inner bore and a drive feature, wherein a proximal end of the distal socket member engages the housing and a distal end of the socket member contains the drive feature;
- a manipulating assembly including a torque member, wherein a proximal end of the manipulating assembly contains the torque member and the distal end of the manipulating assembly engages the housing;
- an interference fitting, the interference fitting moveably attached to the housing;
- and
- a reduction assembly attached to the housing and coupled to the interference fitting;
- wherein movement of the reduction assembly causes the interference fitting to slide along the body member of the housing in a direction away from the socket assembly;
- and
- a plurality of bone anchor extension members, each bone anchor extension member comprising:
- a shaft that includes:
- (i) a distal portion which is threaded and configured to engage corresponding threads of a bone fixation device, the distal portion including a stop to limit insertion depth of the bone anchor extension member into the bone fixation device;
- (ii) an opposed proximal portion including an engagement assembly, the engagement assembly comprising a plurality of tapered segments arranged in series wherein each of the tapered segments is narrower toward its proximal end and wider at its distal end and the tapered segments are configured to engage with an interference member in a surgical instrument;
- and
- (iii) an intermediate portion connected between the distal portion and the proximal portion;
- wherein the engagement assembly has a maximum outer diameter configured to pass through an inner bore of a spinal fixation clamp.
13 more elements
Dependencies are inferred from the claim text.