SCREW DRIVER WITH RELEASE FOR A MULTIAXIAL BONE SCREW
First Claim
1. A screw driver with a release for driving a bone screw into a bone of a patient, the bone screw including an elongate shaft having a threaded screw portion at the distal end and a screw head at the proximal end, said screw head having a recess therewithin, said screw driver comprising:
- an elongate shaft having a distal end and a proximal end, said shaft defining a driving tip at said distal end configured to engage the recess within the screw head for rotation thereof;
a screw engagement member affixed to said shaft for joint rotational movement therewith, said screw engagement member comprising a releasable retention member for releasable attachment to bone screw; and
a release member disposed about said elongate shaft comprising a hollow elongate grip sleeve and a hollow elongate push sleeve joined together for common axial movement along said elongate shaft, said grip sleeve being freely rotatable about said elongate shaft, and said push sleeve being rotatable relative to said grip sleeve and engaged with said engagement member for joint rotational movement therewith.
3 Assignments
0 Petitions
Accused Products
Abstract
A screwdriver with a release for driving a multi-axial bone screw into a vertebra of the spine includes an elongate shaft defining a driving tip at its distal end for engaging and rotating the head of the bone screw. The screw driver includes a screw engagement member affixed to the shaft for joint rotational movement therewith, the screw engagement member comprising a releasable retention member for releasable attachment to the bone screw yoke. A release member is disposed about the elongate shaft comprising a hollow grip sleeve and a hollow push sleeve joined together for common axial movement along the elongate shaft. The grip sleeve is freely rotatable about the shaft and the push sleeve is rotatable relative to the grip sleeve and engaged with a proximal portion of the shaft for joint rotational movement therewith.
18 Citations
19 Claims
-
1. A screw driver with a release for driving a bone screw into a bone of a patient, the bone screw including an elongate shaft having a threaded screw portion at the distal end and a screw head at the proximal end, said screw head having a recess therewithin, said screw driver comprising:
-
an elongate shaft having a distal end and a proximal end, said shaft defining a driving tip at said distal end configured to engage the recess within the screw head for rotation thereof; a screw engagement member affixed to said shaft for joint rotational movement therewith, said screw engagement member comprising a releasable retention member for releasable attachment to bone screw; and a release member disposed about said elongate shaft comprising a hollow elongate grip sleeve and a hollow elongate push sleeve joined together for common axial movement along said elongate shaft, said grip sleeve being freely rotatable about said elongate shaft, and said push sleeve being rotatable relative to said grip sleeve and engaged with said engagement member for joint rotational movement therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A screw driver with a release for driving a multi-axial bone screw into a vertebra of a spine, the bone screw including an elongate shaft having a threaded screw portion at the distal end and a screw head at the proximal end, and a yoke articulatingly attached to the screw head, the yoke having a slot therethrough for receiving a connecting rod, the yoke having screw head having a recess therewithin, said screw driver comprising:
-
an elongate shaft having a distal end and a proximal end, said shaft defining a driving tip at said distal end configured to engage the recess within the screw head for rotation thereof; a screw engagement member affixed to said shaft for joint rotational movement therewith, said screw engagement member comprising a releasable retention member for releasable attachment to said yoke; and a release member disposed about said in elongate shaft comprising a hollow elongate grip sleeve and a hollow elongate push sleeve joined together for common axial movement along said elongate shaft, said grip sleeve being freely rotatable about said elongate shaft and said push sleeve being rotatable relative to said grip sleeve and engaged with a proximal portion of said elongate shaft for joint rotational movement therewith. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A sleeve assembly for use in releasing a screw driver from a bone screw rotatably driven into a bone of a patient, comprising:
an elongate grip sleeve having a lumen extending lengthwise therethrough and an elongate push sleeve joined together for common axial movement, said push sleeve having a lumen extending therethrough in communication with the lumen of said grip sleeve, said push sleeve being rotatably attached to said grip sleeve and comprising an engagement surface for engagement with a portion of said screw driver for common rotational movement therewith. - View Dependent Claims (17, 18, 19)
Specification