Patent ID: 7972338
Filing Date: 2011-07-05
Classification: A61B

Abstract:
1. An osteotomy guide and retraction device for use on a metatarsal having a head and a neck, comprising a clamp, said clamp comprising a handle assembly, having a first handle, a second handle, and a hinge mechanism, said first and second handles suitably adapted to be held and manipulated by a human hand and to articulate about the hinge mechanism, a primary jaw, said primary jaw depending from said first handle with the hinge mechanism interposed between said primary jaw and said first handle, a secondary jaw, said secondary jaw depending from said second handle with the hinge mechanism interposed between said secondary jaw and said second handle, wherein said secondary jaw is suitably adapted to retract an extensor tendon by displacing said tendon away from the head of the metatarsal and retaining said tendon in a retracted position while the device is engaged upon the neck of the metatarsal, and a locking assembly integrated with the handle assembly and suitably adapted to hold the primary and secondary jaws in a fixed position relative to each other, whereby manipulation of said first and second handles causes said primary and secondary jaws to move towards and away from each other; a guide plate, said guide plate being substantially planar and having an outer surface, an inner surface, and a thickness, wherein the guide plate is integrated with and depends from the primary jaw, said guide plate comprising two or more guide slots, with each said guide slot being substantially linear and formed into and passing completely through the thickness of said guide plate, and with each said guide slot having a length and width, wherein the width of each said guide slot is slightly wider than a thickness of a cutting blade so as to accommodate the passing of said cutting blade through said guide slot, and the length of each said guide slot is suitably adapted to permit said cutting blade to make an appropriate length incision into and through the head of the metatarsal, wherein the said two or more guide slots are suitably oriented on said guide plate with respect to each other to permit said cutting blade to make appropriately positioned incisions into and through the head of the metatarsal, wherein the guide plate comprises four guide slots, with the four guide slots denoted A, B, C, and D, respectively, with all four guide slots intersecting with each other at acute angles, with guide slot A forming a substantially 60 degree angle with guide slot D, guide slot B forming a substantially 40 degree angle with guide slot C, guide slot A forming a substantially 50 degree angle with guide slot C, guide slot B forming a substantially 50 degree angle with guide slot D, guide slot A forming a substantially 10 degree angle with guide slot B, and guide slot C forming a substantially 10 degree angle with guide slot D, and with guide slots B and C being longer than guide slots A and D, thereby facilitating the making of multiply configured chevron cuts into and through the head of the metatarsal; a primary metatarsal engagement device, said primary metatarsal engagement device located on the inner surface of the guide plate, said primary metatarsal engagement device having an open, substantially concave configuration forming an engagement surface suitably adapted to snugly fit over and against a portion of the neck of the metatarsal, whereby the primary metatarsal engagement device when engaged with the neck of the metatarsal is suitably adapted to correctly position the guide plate with respect to the head of the metatarsal; and a secondary metatarsal engagement device, said secondary metatarsal engagement device depending from the secondary jaw, with said secondary metatarsal engagement device having an engagement surface suitably adapted to engage the neck of the metatarsal, whereby the secondary metatarsal engagement device when engaged with the neck of the metatarsal is suitably adapted to provide counter pressure to the primary metatarsal engagement device.