Abstract: An implant device includes a connection bridge to cause retraction or distraction of first and second bone segments. The connection bridge overlaps a surface of the segments and exerts a force to one of the first and second bone segments by translation motion of connection bridge. The bridge includes a first insertion structure mountable to the first segment and has at least one rack. An internal repositioning tool has a pinion to engage the rack causing the motion. A locking mechanism selectively locks the motion of the repositioning tool. A second insertion structure mounts to the second segment or a third bone segment between the first and second segments. The second structure includes a housing to house at least one of the pinion and the lock mechanism and receive a portion of the at least one rack to engage the at least one the pinion and the lock mechanism.

Abstract: A suturing system including at least one drive gear with a plurality of outward protrusions and a needle with a first end, a second end, and a plurality of indentations therebetween wherein the plurality of indentations engage with the plurality of outward protrusions of the drive gear to circularly rotate the needle. Additional suturing systems and a method of suturing biological material are also included.