Systems and methods for holding and implanting bone anchors
First Claim
1. A guide assembly for introducing a bone anchor to an operative target site, the bone anchor including a housing having a pair of opposed arms defined by first and second opposed slots formed in the housing, comprising:
- an outer sleeve having a distal end, a proximal end, a central passage extending from the distal end to the proximal end, a third slot open at the distal anchor engaging end and a fourth slot opposite the third slot and open at the distal anchor engaging end, wherein the distal end of the outer sleeve includes first and second lateral projections dimensioned to engage first and second recesses formed in the housing arms and first and second longitudinal ridges dimensioned to be received within first and second longitudinal grooves formed in the housing arms; and
an inner sleeve having a distal end, a proximal end, a fifth slot open at the distal end and aligned with the third slot of the outer sleeve and a sixth slot open at the distal end and aligned with the fourth slot of the outer sleeve, the inner sleeve being situated in the central passage and moveable along a longitudinal axis between an open position and a closed position for temporarily fixing the housing to the guide assembly, the inner sleeve further including a third and fourth longitudinal ridges that are received within third and fourth longitudinal grooves in the housing arms when the inner tube is in the closed position, and wherein the third and fifth slot are aligned with the first slot of the housing and the fourth and sixth slot are aligned with the second slot of the housing when the first and second lateral projections of the outer sleeve are engaged in the first and second recesses of the housing.
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0 Petitions
Accused Products
Abstract
Systems and methods for a guide assembly for introducing a bone anchor to an operative target site. The guide includes an outer sleeve and an inner sleeve. The outer sleeve has a distal anchor engaging end, a proximal end, and a central passage extending from the distal end to the proximal end. The inner sleeve may be situated in the central passage of the outer sleeve. The inner sleeve is movable being between a first position and a second position. The first position permits insertion of the bone anchor in the central passage. The second position releasably fixes the bone anchor to the guide assembly.
324 Citations
15 Claims
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1. A guide assembly for introducing a bone anchor to an operative target site, the bone anchor including a housing having a pair of opposed arms defined by first and second opposed slots formed in the housing, comprising:
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an outer sleeve having a distal end, a proximal end, a central passage extending from the distal end to the proximal end, a third slot open at the distal anchor engaging end and a fourth slot opposite the third slot and open at the distal anchor engaging end, wherein the distal end of the outer sleeve includes first and second lateral projections dimensioned to engage first and second recesses formed in the housing arms and first and second longitudinal ridges dimensioned to be received within first and second longitudinal grooves formed in the housing arms; and an inner sleeve having a distal end, a proximal end, a fifth slot open at the distal end and aligned with the third slot of the outer sleeve and a sixth slot open at the distal end and aligned with the fourth slot of the outer sleeve, the inner sleeve being situated in the central passage and moveable along a longitudinal axis between an open position and a closed position for temporarily fixing the housing to the guide assembly, the inner sleeve further including a third and fourth longitudinal ridges that are received within third and fourth longitudinal grooves in the housing arms when the inner tube is in the closed position, and wherein the third and fifth slot are aligned with the first slot of the housing and the fourth and sixth slot are aligned with the second slot of the housing when the first and second lateral projections of the outer sleeve are engaged in the first and second recesses of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A guide assembly for introducing a bone anchor to an operative target site, the bone anchor including a housing having a pair of opposed arms defined by first and second opposed slots formed in the housing, comprising:
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an outer sleeve having a distal end, a proximal end, a central passage extending from the distal end to the proximal end, a third slot open at the distal anchor engaging end and a fourth slot opposite the third slot and open at the distal anchor engaging end, wherein the distal end of the outer sleeve includes first and second projections extending into the central passage and dimensioned to engage first and second recesses formed in the housing arms; and an inner sleeve having a distal end, a proximal end, a fifth slot open at the distal end and aligned with the third slot of the outer sleeve and a sixth slot open at the distal end and aligned with the fourth slot of the outer sleeve, wherein the third and fifth slot are aligned with the first slot of the housing and the fourth and sixth slot are aligned with the second slot of the housing when the first and second projections of the outer sleeve are engaged in the first and second recesses of the housing, the inner sleeve being situated in the central passage and moveable along a longitudinal axis between an open position and a closed position for temporarily fixing a housing to the guide assembly, the distal end of the inner sleeve including a first distal extension having a first longitudinally extending engagement feature configured to slideably engage a complementary first longitudinally extending engagement feature on the housing and a second distal extension having a second longitudinally extending engagement feature configured to slideably engage a complementary second longitudinally extending engagement feature on the housing, a portion of the inner sleeve being spring biased distally, and wherein the guide assembly includes a locking mechanism to prevent the inner sleeve from moving from the closed position until the locking mechanism is disengaged. - View Dependent Claims (13, 14, 15)
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Specification