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US 2006/0149291 A1Published application
Self retaining set screw inserter
AssigneeDePuy Spine, Inc.
InventorSean Selover
Life of this patent
Estimating the term…
Abstract
A self retaining screw inserter for inserting, positioning and removing a set screw of a spinal fixation system, includes an active reverse-collet retainer. The active reverse-collet retainer has fingers configured to move outward to engage and retain a set screw. When engaged, the fingers flare outward to engage the set screw.
Claims20
A self-retaining screw inserter comprising:
- an active reverse-collet retainer.
A self-retaining screw inserter comprising:
- an outer shaft defining an axially extending passageway, the outer shaft comprising:
- a distal tip comprising at least two fingers configured to retain a set screw, and
- a proximal end configured to receive an inner shaft;
- and
- an inner shaft comprising a push rod configured to be inserted into the proximal end of the outer shaft and engage the distal tip of the outer shaft,
- wherein when the push rod engages the distal tip, the two or more fingers of the distal tip are moved radially outward allowing the distal tip to retain a set screw.
3 more elements
A method of using a self retaining screw inserter comprising:
- an outer shaft defining an axially extending passageway, the outer shaft comprising a distal tip comprising at least two fingers configured to retain a set screw, and a proximal end configured to receive an inner shaft;
- and
- an inner shaft comprising a push rod configured to be inserted into the proximal end of the outer shaft and engage the distal tip of the outer shaft;
- wherein when the push rod engages the distal tip, the two or more fingers of the distal tip are moved radially outward allowing the distal tip to retain a set screw,
- the method comprising.
- placing a set screw on the distal tip of the outer shaft;
- and
- retaining the set screw by engaging the distal tip of the outer shaft with the push rod of the inner shaft, wherein the two or more fingers of the distal head are moved radially outward to engage the set screw.
5 more elements
Dependencies are inferred from the claim text.