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US 12,758,276 B2Granted
Surgical cord tensioning devices, systems, and methods
AssigneeHighridge Medical, LLC
InventorRandall G. Mast
Life of this patent
Estimating the term…
Abstract
A system for manipulating implants may include a tensioner and a counter tensioner. The tensioner may include a nose assembly and a cord lock assembly for applying tension to a cord. The nose assembly may include a piston having a lumen extending therethrough for receiving the cord and a spring positionable in contact with an indicator region of the piston. The counter tensioner may be releasably coupleable to a head of an implant at a proximal end thereof and may guide the cord to a port proximate the distal end thereof, the port for receiving the nose assembly. The indicator region of the piston may be visible through a window in a tensioner main body and may indicate cord tension when the nose assembly of the tensioner is coupled to the port of the counter tensioner and engaged with the cord.
Claims18
A system for manipulating implants coupled by a cord, the system comprising:
- a counter tensioner to guide the cord from a tensioner to an implant, the counter tensioner comprising:
- an elongate body with a proximal end and a distal end, with a longitudinal axis of the elongate body defined through the proximal end and the distal end;
- a lock at the distal end of the elongate body, the lock being releasably coupleable to a head of the implant such that the distal end of the elongate body is releasably coupleable to a head of an implant enabling translation of the implant relative to another implant implanted in an adjacent or nearby vertebrae;
- an outwardly biasable arm at the distal end of the elongate body, wherein the lock is at a distal end of the outwardly biasable arm;
- and
- a lock extension located within a lock extension channel in the elongate body, wherein the lock extension is engageable with the outwardly biasable arm;
- wherein the lock is able to actuate between a first position and a second position, wherein the lock is engaged with the head of the implant when in the first position, wherein the lock is disengaged from the head of the implant when in the second position;
- wherein the distal end of the lock is a first distance from the longitudinal axis through the elongate body when the lock is in the first position, wherein the distal end of the lock is a second distance from the longitudinal axis through the elongate body when the lock is in the second position, and wherein the second distance is greater than the first distance;
- wherein, when the lock is in the first position, the lock extension engages the outwardly biasable arm in a first state to cause the lock to engage with the head of the implant and urge the outwardly biasable arm into secure engagement with the head of the implant, and
- wherein, when the lock is in the second position, the lock extension engages the outwardly biasable arm in a second state to cause the lock to disengage from the head of the implant and allow the outwardly biasable arm to release from the head of the implant.
7 more elements
A system for manipulating implants coupled by a cord, the system comprising:
- a counter tensioner to guide the cord from a tensioner to an implant, the counter tensioner comprising:
- an elongate body with a proximal end and a distal end;
- and
- an outwardly biasable arm at the distal end of the elongate body, wherein a lock is at a distal end of the outwardly biasable arm, the lock being able to actuate between a first position and a second position to releasably couple to a head of the implant such that the distal end of the elongate body is releasably coupleable to a head of the implant enabling translation of the implant relative to another implant implanted in an adjacent or nearby vertebrae;
- and
- a lock extension located within a lock extension channel in the elongate body, wherein the lock extension is engageable with the outwardly biasable arm;
- wherein, when the lock is in the first position, the lock extension engages the outwardly biasable arm in a first state to cause the lock to engage with the head of the implant and urge the outwardly biasable arm into secure engagement with the head of the implant;
- wherein, when the lock is in the second position, the lock extension engages the outwardly biasable arm in a second state to cause the lock to disengage from the head of the implant and allow the outwardly biasable arm to release from the head of the implant;
- and
- wherein the outwardly biasable arm includes the distal end, a proximal end, and a pivot therebetween, and wherein the lock at the distal end of the outwardly biasable arm includes a pin that is engageable with a cooperating recess on the head of the implant.
7 more elements
A system for manipulating implants coupled by a cord, the system comprising:
- a counter tensioner to guide the cord from a tensioner to an implant, the counter tensioner comprising:
- an elongate body with a proximal end and a distal end, with a longitudinal axis of the elongate body defined through the proximal end and the distal end, the elongate body comprising:
- an outer sleeve;
- and
- an inner sleeve located within the outer sleeve, wherein the inner sleeve includes an outwardly biasable arm at a distal end of the inner sleeve, wherein the lock is at a distal end of the outwardly biasable arm;
- and
- a lock at the distal end of the elongate body, the lock being releasably coupleable to a head of the implant such that the distal end of the elongate body is releasably coupleable to a head of an implant enabling translation of the implant relative to another implant implanted in an adjacent or nearby vertebrae;
- wherein the lock is able to actuate between a first position and a second position, wherein the lock is engaged with the head of the implant when in the first position, wherein the lock is disengaged from the head of the implant when in the second position;
- wherein the distal end of the lock is a first distance from the longitudinal axis through the elongate body when the lock is in the first position, wherein the distal end of the lock is a second distance from the longitudinal axis through the elongate body when the lock is in the second position, and wherein the second distance is greater than the first distance;
- wherein the outer sleeve is able to engage and disengage the outwardly biasable arm,
- wherein, when the lock is in the first position, the outer sleeve engages the outwardly biasable arm in a first state to cause the lock to engage with the head of the implant and urge the outwardly biasable arm into secure engagement with the head of the implant, and
- wherein, when the lock is in the second position, the outer sleeve disengages from the outwardly biasable arm in a second state to cause the lock to disengage from the head of the implant and allow the outwardly biasable arm to release from the head of the implant.
9 more elements
Dependencies are inferred from the claim text.