Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1988-09-12
1990-04-17
Cannon, Alan W.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 228
Patent
active
049177010
ABSTRACT:
A total TMJ replacement system comprises a temporal implant component and a mandibular implant component.
The temporal component comprises a thin, rigid plate of Vitallium.RTM. which is contoured to generally conform to and overlay at least the articular eminence and mandibular fossa portions of the glenoid fossa, but not the petro-tympanic fissure. A layer of Silastic.RTM. is securely attached to the superior surface of the plate and is disposed to reside between the plate and the floor of the mandibular fossa to act as both a filler and a means for adjusting the vertical position of the plate relative to the floor of the natural fossa. The plate includes a lateral flange which is screwed to the zygion to hold the plate securely in place.
A preferred form of the mandibular component comprises a rigid, thin-walled, generally upright channel having a J-shaped cross-section with open upper and lower ends, which is formed of Vitallium, to slip over and generally conform to the posterior border of a natural ramus from which the condyle has been removed. The channel is secured to the ramus with screws. An artificial condyle, comprising an anatomically-correct, laterally elongated and tapered head disposed above a narrowed neck and shoulders, is molded onto the upper end of the channel from a hard, smooth, acrylic such that it fairs smoothly onto, and serves as a closure for, the upper end of the channel.
REFERENCES:
patent: 4726808 (1988-02-01), Collins
patent: 4778472 (1988-10-01), Homsy et al.
Cannon Alan W.
Lawrence Don
Paul N.
LandOfFree
Temporomandibular joint prostheses does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temporomandibular joint prostheses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temporomandibular joint prostheses will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1049834