Patent ID: 8523913

Claim:
A device for securing a rod shaped member and comprising: (a) a receiver having spaced apart arms defining a member receiving channel therebetween, said arms having main portions and extended portions connected to said main portions by weakened regions, said main portions and said extended portions of said arms having inner surfaces; (b) a closure sized to be received within said channel to clamp the rod shaped member therein and having a body; (c) a closure guide and advancement flange extending helically about and along said closure, said closure flange having a closure anti-splay contour with a downwardly facing closure leading surface and a trailing surface; the trailing surface having an inner portion extending outwardly and downwardly from the body and an outer portion that has a surface that is raised above the inner portion; (d) a discontinuous receiver guide and advancement flange extending helically about and along said inner surfaces of said main portions and said extended portions of said arms, said receiver flange having a receiver anti-splay contour with an upwardly facing receiver leading surface; the closure trailing surface raised surface being sized and shaped to remain spaced from the receiver guide and advancement flange so as to remain unloaded during use; (e) the anti-splay contours of said closure flange and said receiver flange being complementary to mate during rotation of the closure relative to the receiver, while radially interlocking, and thereafter cooperatively to prevent splaying of said arms when said closure is advanced into said receiver; said closure being advanceable against rod shaped member to clamp the member relative to said receiver; said downwardly facing closure leading surface and said upwardly facing receiver leading surface cooperating so as to produce a gap therebetween; and (f) said extended portions of said arms guiding the closure into the channel during rotation of the closure into the channel and thereafter being separable from said main portions after said closure clamps the rod shaped member within a portion of said channel defined by said main portions of said arms.