Extension devices for attaching hair extension elements to artificial hair elements that protrude from a subcutaneously implanted hair implant anchor body. One extension device involves a cylindrical structure having respective cavities on opposing ends. One cavity receives an artificial hair element distal end while the other cavity receives the hair extension therein. Another extension device involves a hair extension element forming a first portion of the device while a second opposite portion includes a projection that is received inside an artificial hair element hollow interior. A third extension device involves a core having a hair extension element projecting from one core side while a single cavity is located on a second opposite side, for receiving the distal end of the artificial implanted hair element therein. The hair extension may comprise ancillary hair elements and bud structures. Ornamental structures may be included on the distal ends of the hair extension element.用於將毛髮延展元件附接至自皮下植入毛髮植入物錨固體突出的人造髮元件的延展器件。一個延展器件包含在相對端上具有相應空腔的圓柱形結構。一個空腔接收人造髮元件遠端，而另一個空腔接收毛髮延展部。另一個延展器件包含毛髮延展元件，毛髮延展元件形成器件的第一部分，而第二相對部分包括接收於人造髮元件中空內部中的突出部。第三延展器件包含核心，核心具有自核心一側突出的毛髮延展元件，而單個空腔位於第二相對側上，用於接收人造植入髮元件的遠端。毛髮延展部可包括輔助毛髮元件及芽狀結構。在毛髮延展元件的遠端上可包括裝飾性結構。
