An extensible tissue anchor (120, 220, 320) is provided, the extensible tissue anchor (120, 220, 320) including an elongated tissue connecting portion (130) and a flexible elongated tension member (146). including. A portion of the pull member (146) is slidably disposed through the passages (191, 291 and 391) defined by the anchors (120, 220 and 320). A sleeve (190) surrounds a portion of the tension member (146) between the tissue connecting portion (130) and the distal openings (194,294,394) of the passageways (191,291,391). The sleeve (190) and the passages (191, 291 and 391) are such that the size and shape of the passages (191, 291 and 391) are such that when the tensile force is applied to the tension member (146). ) Is sized and shaped to prevent proximal movement of the sleeve (190) past it), thereby limiting compression and deformation of the elongated tissue connecting portion (130) by the tensioning member (146). To do. Other embodiments are also described. [Selection diagram] Figure 1伸張可能な組織アンカー(120,220,320)が提供され、当該伸張可能な組織アンカー(120,220,320)は、細長い組織連結用部分(130)と可撓性の細長い引張り部材(146)を含む。引っ張り部材(146)の一部が、当該アンカー(120,220,320)によって定められた通路(191,291,391)を通してスライド可能に配置される。スリーブ(190)が、組織連結用部分(130)と通路(191,291,391)の遠位開口部(194,294,394)との間で引張部材(146)の一部を囲む。スリーブ(190)および通路(191,291,391)は、通路(191,291,391)のサイズおよび形状が、引張り部材(146)への引張力の印加の際に通路(191,291,391)を通り越えるようなスリーブ(190)の近位方向の移動を防止するサイズならびに形状であり、そのことによって、引張り部材(146)による伸張した組織連結用部分(130)の圧縮および変形を制限する。その他の実施形態もまた記載される。【選択図】図1