Patent ID: 8764842
Filing Date: 2014-07-01
Classification: A61B,A61F

Abstract:
1. An interphalangeal joint implant for correction of abnormal flexion of a lesser human toe by insertion at a proximal interphalangeal joint between a distal end of a proximal phalanx and a proximal end of a corresponding middle phalanx, said interphalangeal joint implant comprising: a proximal phalanx component comprising a first base plate, a central longitudinal cannulation, and a proximal phalanx stem mounted upon said first base plate and being operable for insertion into an interior portion of a distal end of a proximal phalanx; a middle phalanx component comprising a second base plate, a central longitudinal cannulation, and a middle phalanx stem mounted upon said second base plate and being operable for insertion into an interior portion of a proximal end of a middle phalanx; and an attachment for joining said first base plate to said second base plate to maintain a desired angle between a proximal phalanx and a middle phalanx bone and thus correcting abnormal flexion of a lesser human toe, wherein said proximal phalanx stem comprises a cylindrical portion at the tip of said proximal phalanx stem; and a generally trapezoidal portion having generally arcuate sides, joined to said first base plate and extending to the cylindrical portion of said proximal phalanx stem, wherein said first base plate and said second base plate include complementary male and female registry structures configured to insure the base plates will properly align when brought into contact, wherein said attachment comprises: wherein said two parallel detent arms are spring loaded when inserted into the central longitudinal cannulation of the proximal phalanx component; and wherein said two parallel detent arms lock when their distal bulges reach the through-apertures in the proximal phalanx component.