Back to results
US 2005/0033307 A1Published application
Locking surgical instrument
OwnerMichael Cook, Rodney Bays +2inventors
InventorsMichael Cook, Rodney Bays, Billy Sisk, Karthik Suryanarayan
Life of this patent
Estimating the term…
Abstract
The present invention provides a locking surgical instrument for gripping a surgical workpiece.
Claims19
A locking surgical instrument for gripping a surgical workpiece, the instrument comprising:
- a body including a shaft having a first end, a second end, and an axis therebetween, an engagement tip formed adjacent the second end is receivable by the workpiece, a portion of the engagement tip is divided by one or more slits from the second end toward the first end for a predetermined distance to form a plurality of segments able to be biased radially outwardly to grip the workpiece in force transmitting relationship;
- and
- an actuator engageable with the body such that movement of the actuator biases the segments to grip the workpiece.
A locking surgical instrument for gripping a pin of a knee prosthesis, the instrument comprising:
- a body including an elongated shaft having a first end, a second end, and an axis therebetween, a polygonal engagement tip formed adjacent the second end being receivable by a similarly shaped opening on the pin, a portion of the engagement tip being slit from the second end toward the first end for a predetermined distance to divide the tip into a plurality of segments able to be biased radially outwardly to grip the workpiece in axial force transmitting relationship, the body shaft being axially cannulated from the first end toward the second end such that the cannula extends into the slit portion a predetermined amount;
- and
- an actuator including a shaft having a first end, a second end, and an axis therebetween, the shaft being receivable within the cannula for axial translation between an unlocked position in which the actuator second end is spaced from the body shaft second end and a locked position in which the actuator second end is nearer the body shaft second end and biases the segments.
A method of gripping a surgical workpiece comprising:
- providing an instrument having a shaft with an axis and an engagement tip formed at one end, a portion of the engagement tip being slit to divide the tip into a plurality of segments able to be biased radially outwardly, and an actuator engageable with the body such that movement of the actuator biases the segments outwardly;
- inserting the engagement end into an opening in the workpiece;
- and
- moving the actuator to bias the segments outwardly to grip the workpiece in force transmitting relationship.
1 more element
Dependencies are inferred from the claim text.