Patent classifications
A61F2002/4619
Devices and techniques for hip revision surgery
Piezoelectric osteotomy devices and corresponding systems and methods for removing an acetabular cup or shell from a patient's acetabulum are disclosed. In one embodiment, the piezoelectric osteotomy device includes a piezoelectric element to actuate a cutting tip on an armature. In some such embodiments, the cutting tip may be extended and/or retracted to facilitate cutting of bone around an acetabular cup. The armature may include a fluid output port located proximate the cutting tip to mitigate heat generated by the cutting tip. In one embodiment, the piezoelectric osteotomy device is arranged and configured to provide constant current adjustment.
Bone graft harvesting
The present disclosure includes apparatuses for a bone graft harvesting device. An example apparatus includes a blade tip including a proximal end and a distal end, wherein the distal end of the blade tip includes a number of blades configured to morcellate bone in response to being rotated and a lead tip located within the blade tip and configured to maintain the bone graft harvesting apparatus centered on a bone graft punch hole.
INTERVERTEBRAL DISC AND INSERTION METHODS THEREFOR
A method of inserting an intervertebral disc implant into a disc space includes accessing a spinal segment having a first vertebral body, a second vertebral body and a disc space between the first and second vertebral bodies. The method includes securing a first pin to the first vertebral body and a second pin to the second vertebral body, using the first and second pins for distracting the disc space, and providing an inserter holding the intervertebral disc implant. The method also desirably includes engaging the inserter with the first and second pins, and advancing the inserter toward the disc space for inserting the intervertebral disc implant into the disc space, whereby the first and second pins align and guide the inserter toward the disc space.
APPARATUS AND METHOD FOR REMOVAL OF ACETABULAR CUP WITH MINIMAL BONE LOSS
An acetabular cup removal device and method. The removal device can include a mounting ring attachable to an acetabular cup, a rotor rotatably coupled to the mounting ring and rotatable about a first axis, an arm pivotably coupled to the rotor and pivotable about a second axis orthogonal to the first axis, an oscillator assembly slidably disposed in a first slit of the arm, and a blade slidably disposed in a second slit of the arm. A rotation of the oscillator assembly causes an oscillation of the blade within the second slit. The removal method includes coupling the device to an acetabular cup, positioning the arm and blade at an initial location, oscillating the blade so as to perform a cut, repositioning the arm at a subsequent adjacent location, repeating the repositioning and oscillating steps until a 360° circumference is cut around the acetabular cup, and removing the acetabular cup.
Revision implant augments, systems, and methods
A revision implant component comprising a body having a plurality of screw holes and a tapered head configured to engage a talar dome component of a multi-component ankle prosthesis. A surgical method is disclosed which includes creating an incision in a patient, exposing a multi-component ankle prosthesis implanted in a patient, disassembling at least one component of the multi-component ankle prosthesis, affixing a revision implant component to non-damaged bone using screws, and coupling the revision implant component to a talar dome of the multi-component ankle prosthesis.
IMPLANT EXTRACTOR
An implant extractor for use in orthopedic surgeries. The implant extractor provides a line of force substantially parallel to an implant to be extracted. The implant extractor includes a curved body having a curved jaw track configured to slidingly receive a correspondingly curved jaw for clamping a trunnion of an implant, e.g., a hip stem implant. A push rod urges the curved jaw into clamping engagement with the trunnion under the influence of a cam handle having a continuously curved cam surface.
PROSTHETIC COMPONENT EXTRACTOR
A medical device, comprises an elongated member having a first end portion and a second end portion opposite the first end portion. A handle is coupled to the elongated member at the first end portion and defines a first striking surface. A second striking surface is coupled to the elongated member between the first end and the second end as a protrusion extending away from the elongated member. A hook is coupled to the second end portion and defines a channel sized and configured to receive at least a portion of a surgical implant.
Acetabular cup extractor
An orthopedic instrument in the form of an acetabular cup extractor system for reliably and efficiently extracting an acetabular cup implant from an acetabulum. The system includes a handle assembly, an extractor attachable to a distal end of the handle, and a dome guide assembly having a hemi-spherical dome for engaging the extractor and a centering body extending distally from the hemi-spherical dome for engaging an acetabular implant. The extractor includes a curved, concave guide and a curved blade. The curved, concave guide is sized and shaped to substantially matingly engage with and cover a substantial portion of the hemi-spherical dome. As a result of such an arrangement, a uniform cut is achieved by the curved blade thereby resulting in a minimum of bone being extracted from the acetabulum around the acetabular cup implant during a surgical procedure.
Spinal artificial disc removal tool
An extraction tool for removing an installed artificial disc from a spine is provided. The extraction tool is impacted between the artificial disc and the vertebrae and engages the artificial disc to allow a surgeon to remove the artificial disc from the spine.
Instrument configured to generate an impact and retracting load on an inserter
An instrument and inserter kit for providing a load to insert or retract an implant 2000 is provided. The instrument includes a cover having an engagement end opposite a distal end. The engagement end is configured to mount to an engagement feature of a handle of an inserter. The cover is an elongated member having a C-shaped profile having a dimension configured to receive a sliding member. The sliding member is seated over the cover and is weighted. The sliding member is configured to slide between a first radial lip and a second radial lip so as to provide an impacting force or retracting force on the instrument.