US 10,765,465 B2Granted

Tensioning instrument

AssigneeA&E Advanced Closure Systems, LLC

InventorMatthew P. Gephart

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Abstract

A bone plate system for securing a plurality of bones is provided including a plate member, a locking device of the bone plate, and a surgical cable having a trailing end for being connected to the bone plate and a leading end for being advanced around the bones and into the locking device. The surgical cable may be tensioned to approximate the bones, urge the bones together, and seat the bone plate against the bones. The locking device may be reconfigured to a locked configuration to fix the bone plate to the surgical cable. The bone plate further includes a plurality of throughbores for receiving bone anchors that rigidly fix the bone plate to the bones. The bone plate system utilizes the tensile strength of the surgical cable and the rigid fixation between the bone anchors and the bone plate to resist relative movement of the bones.

Claims24

Dependent claims

An instrument for tensioning a surgical cable, the instrument comprising:

a rotary tensioner operable to have surgical cable wound up thereon;
a ratchet assembly including a pawl and a ratchet gear, the ratchet assembly configured to permit turning of the rotary tensioner in a wind up direction and resist turning of the rotary tensioner in a pay out direction;
a drive operably connected to the rotary tensioner;
at least one detent member of the drive, the at least one detent member having a drive position wherein the at least one detent member operatively engages the drive and the ratchet gear so that the ratchet gear turns with the drive, the at least one detent member having a release position wherein the at least one detent member permits the drive and the ratchet gear to turn relative to one another;
the drive having a handle configured to be turned in a first rotary direction to cause the drive to turn the rotary tensioner in the wind up direction and wind surgical cable onto the rotary tensioner and turn the ratchet gear with the drive;
and
the handle configured to be turned in a reverse, second rotary direction to shift the at least one detent member from the drive position to the release position which operatively disengages the drive from the ratchet assembly and permits the rotary tensioner to turn in the pay out direction.

4 more elements

An instrument for tensioning a surgical cable, the instrument comprising:

a rotary tensioner;
a handle;
a drive shaft assembly connecting the handle and the rotary tensioner such that turning of the handle in a first rotary direction causes the rotary tensioner to turn in a wind up direction and turning of the handle in an opposite, second rotary direction causes the rotary tensioner to turn in a pay out direction;
a ratchet assembly that is operatively engageable with the drive shaft assembly and permits turning of the drive shaft assembly in the first rotary direction and resists turning of the drive shaft assembly in the second rotary direction;
the drive shaft assembly comprising a pair of shaft members configured to turn relative to each other with the turning of the handle in the second rotary direction which operatively disengages the drive shaft assembly from the ratchet assembly and permits the drive shaft assembly to turn in the second rotary direction;
and
a biasing member of the drive shaft assembly secured to the pair of shaft members that resists the relative turning of the pair of shaft members and urges the drive shaft assembly back into operative engagement with the ratchet assembly.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/223,939Filed 29 Jul 2016 · continuation in part
Priority: 21 Nov 2012
Published: US 2016/0331431 A117 Nov 2016
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

A61B 17/8869
Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices: tensioning devices
A61B 17/8076
Specially adapted for particular bones: for the ribs or the sternum
A61B 17/808
Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates:…
A61B 17/823
For bone cerclage: for the sternum

Family

Application61/728,930Us provisional application · filed 21 Nov 2012
Application13/837,615Parent of this continuation-in-part · filed 15 Mar 2013
US 2016/0331431 A1Pre-grant publication · published 17 Nov 2016
US 9,561,064 B2Parent of this continuation-in-part
US 2014/0142638 A1Published application
US 10,765,465 B2This patent

From the US filing history. Foreign family members aren’t listed.

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