BONE FIXATION ASSEMBLY
First Claim
1. A bone fixation instrument having a front end and a rear end spaced from the front end in a rearward direction, the bone fixation instrument configured to apply tension to a bone fixation member so as to tighten the bone fixation member about a target bone, the bone fixation instrument comprising:
- a grip configured to attach to a free end of the bone fixation member;
a traveler that supports the grip such that as the traveler moves in the rearward direction, the grip moves along with the traveler in the rearward direction so as to increase tension in the bone fixation member when the grip is attached to the bone fixation member;
a cutter arm that carries a cutter blade and is configured to move the cutter blade to a cutting position whereby the cutter blade severs the free end of the bone fixation member when the grip is attached to the bone fixation member;
an actuator configured to be selectively independently coupled to the traveler and the cutter arm; and
a toggle member movable between a first and a second position, wherein
1) when the toggle member is in the first position, the bone fixation instrument is in a tensioning mode whereby movement of the actuator causes the traveler to move in the rearward direction thereby increasing the tension in the bone fixation member when the grip is attached to the bone fixation member, and
2) when the toggle member is in the second position, the bone fixation instrument is in a cutting mode whereby movement of the actuator causes the cutter arm to move the cutter blade to the cutting position.
6 Assignments
0 Petitions
Accused Products
Abstract
A bone fixation system includes at least one bone fixation member and a bone fixation instrument. The bone fixation member includes a strap and a locking mechanism. The strap can be pulled through the locking mechanism so as to form a loop about a target bone so as to secure first and second bone segments in an approximated, compressed configuration. The bone fixation instrument is configured to apply tension to the loop about the target bone. The fixation instrument includes a tension assembly that is configured to secure a free end of the bone fixation member to the fixation instrument. The tension assembly is further configured to pull the free end so as to increase tension in the loop while the tension in the loop is less than a select tension. The tension assembly is unable to further increase tension in the bone fixation member once the tension in the bone fixation member has reached the select tension. The fixation instrument further includes a cutter assembly that is configured to cut the free end of the bone fixation member so as to separate the free end from the loop.
60 Citations
20 Claims
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1. A bone fixation instrument having a front end and a rear end spaced from the front end in a rearward direction, the bone fixation instrument configured to apply tension to a bone fixation member so as to tighten the bone fixation member about a target bone, the bone fixation instrument comprising:
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a grip configured to attach to a free end of the bone fixation member; a traveler that supports the grip such that as the traveler moves in the rearward direction, the grip moves along with the traveler in the rearward direction so as to increase tension in the bone fixation member when the grip is attached to the bone fixation member; a cutter arm that carries a cutter blade and is configured to move the cutter blade to a cutting position whereby the cutter blade severs the free end of the bone fixation member when the grip is attached to the bone fixation member; an actuator configured to be selectively independently coupled to the traveler and the cutter arm; and a toggle member movable between a first and a second position, wherein
1) when the toggle member is in the first position, the bone fixation instrument is in a tensioning mode whereby movement of the actuator causes the traveler to move in the rearward direction thereby increasing the tension in the bone fixation member when the grip is attached to the bone fixation member, and
2) when the toggle member is in the second position, the bone fixation instrument is in a cutting mode whereby movement of the actuator causes the cutter arm to move the cutter blade to the cutting position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A bone fixation instrument having a front end and a rear end spaced from the front end in a rearward direction, the bone fixation instrument configured to apply tension to a bone fixation member so as to tighten the bone fixation member about a target bone, the bone fixation instrument comprising:
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a grip configured to attach to a free end of the bone fixation member; a traveler that supports the grip such that as the traveler moves in the rearward direction, the grip moves along with the traveler in the rearward direction so as to increase tension in the bone fixation member when the grip is attached to the bone fixation member; a cutter arm that carries a cutter blade, the cutter arm configured to move the cutter blade to a cutting position whereby the cutter blade severs the free end of the bone fixation member when the grip is attached to the bone fixation member; an actuator configured to selectively pivot about a first pivot axis and a second pivot axis that is spaced from the first pivot axis, such that when the actuator pivots about the first pivot axis, the actuator causes a force to be applied to the traveler in the rearward direction, and when the actuator pivots about the second pivot axis, the actuator causes a force to be applied to the cutter member, thereby causing the cutter member to move the cutting blade to the cutting position. - View Dependent Claims (17, 18, 19, 20)
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Specification