Patent ID: 6010509
Filing Date: 2000-01-04
Classification: A61B,A61F

Abstract:
A pliers-like device for the resection and replacement implantation of a patella comprising:a) a top and a bottom combination prong and handle members with a fulcrum therebetween, and having a posterior and anterior surface, the prong and handle members being pivotably mounted in relation with one another at the fulcrum with a hinge bolt, said hinge bolt extending through holes at the fulcrum and having a post and a rotatably adjustable knob thereon to maintain a pre-determined distance from the posterior surface of the top prong and handle member;b) means along the inner edges of the prong members for firmly holding the periphery of a patella, with the posterior surfaces of the prong members defining the plane along which the patella is to be resected;c) a locking device at the ends of the handle members opposite the prong members to enable locking of the prong members to maintain a firm hold around the periphery of the patella;d) a tongue member attached to a prong member at a site near the fulcrum of the device and positioned between the prong members and at a predetermined distance from the anterior surface of the prong members for engaging the anterior surface of the patella thereby controlling the depth to which the patella is to be resected;e) a drill guide consisting of a member having holes therethrough with an attached slotted member, the slot being of a suitable width and thickness to be slidably insertable between and removable from the knob of the hinge bolt and the posterior surface of the top handle member and to fit snuggly around the post of the hinge bolt; andf) a patella button presser consisting of an S-shaped bar having at one end a slotted tongue member and at the opposite end a hole with a bolt inserted therethrough with means to control an up-and-down movement of the bolt through the hole, a tip of the bolt having a platen movably mounted thereon, the platen having a concave surface for engaging the convex surface of the patella button, and said patella button presser being slidably insertable between and removable from the hinge bolt knob and the posterior surface of the top handle member.