초록 ▼

A pedicle screw assembly includes a fastener having an expandable head. The expandable head has an outer surface including a convex portion, a recess having an inner surface and defining an inner dimension, and at least one slot extending between the inner and outer surfaces thereof. The assembly al

A pedicle screw assembly includes a fastener having an expandable head. The expandable head has an outer surface including a convex portion, a recess having an inner surface and defining an inner dimension, and at least one slot extending between the inner and outer surfaces thereof. The assembly also has an insert positionable at least partially in the recess having an outer surface defining an outer dimension that is greater than the inner dimension of the recess. The assembly includes a coupling element including a rod receiving opening, a bore for the fastener, and a seat for receiving the head of the fastener and allowing the fastener and coupling element to pivot relative to one another before being locked in place. After an orthopedic rod is positioned within the coupling element, a locking element associated with the coupling element locks the orthopedic rod in the rod-receiving opening. The locking element applies a force onto the rod to in turn force the insert into the recess of the expandable head for expanding the outer surface of the head against the seat of the coupling element and locking the coupling element and fastener from further pivotal movement relative to one another.

대표청구항 ▼

A pedicle screw assembly includes a fastener having an expandable head. The expandable head has an outer surface including a convex portion, a recess having an inner surface and defining an inner dimension, and at least one slot extending between the inner and outer surfaces thereof. The assembly al

A pedicle screw assembly includes a fastener having an expandable head. The expandable head has an outer surface including a convex portion, a recess having an inner surface and defining an inner dimension, and at least one slot extending between the inner and outer surfaces thereof. The assembly also has an insert positionable at least partially in the recess having an outer surface defining an outer dimension that is greater than the inner dimension of the recess. The assembly includes a coupling element including a rod receiving opening, a bore for the fastener, and a seat for receiving the head of the fastener and allowing the fastener and coupling element to pivot relative to one another before being locked in place. After an orthopedic rod is positioned within the coupling element, a locking element associated with the coupling element locks the orthopedic rod in the rod-receiving opening. The locking element applies a force onto the rod to in turn force the insert into the recess of the expandable head for expanding the outer surface of the head against the seat of the coupling element and locking the coupling element and fastener from further pivotal movement relative to one another. e distal end portion of said second elongate section defining an illumination input end portion; a connector on said shaft portion releasably coupling the illumination input end portion to an optical cable. 25. The illuminated surgical retractor of claim 24, wherein said second elongate section is oriented at an obtuse angle with respect to said handle member. 26. The illuminated surgical retractor of claim 24, wherein at least a portion of said second elongate section is engaged by at least a portion of said first elongate section. 27. The illuminated surgical retractor of claim 24, wherein said first elongate section includes a shield member thereon and said shield member obstructs the illumination from at least a portion of said second elongate section. 28. The illuminated surgical retractor of claim 24, wherein said second elongate section forms a light pipe and includes a surface thereon for directing light forwardly therefrom. 29. An illuminated surgical retractor for retracting tissue in a surgical site and illuminating the adjacent tissue of a patient, the retractor comprising: a handle member having a first handle end portion and a second handle end portion with a gripping area therebetween for gripping by the user and an optical cable extending therealong; a shaft portion associated with the second handle member end portion and including a connector thereon; an elongate first elongate section sized to be positioned in the surgical site to retract tissue therein and having a first elongate proximal end portion with a lip member thereon and a first elongate distal end portion with a first elongate inner surface extending between the first elongate proximal end portion and the first elongate distal end portion, the second handle end portion of said handle member interconnected to the first elongate section; an elonga