Anatomical location markers and methods of use in positioning sheet-like materials during surgery

摘要

A tissue marker assembly which can be useful with an implant delivery system for delivering a sheet-like implant is disclosed. The tissue marker assembly can include a delivery sleeve with a tissue marker slidably disposed within a lumen therethrough. A proximal handle can be coupled to the tissue marker and delivery sleeve, having a first part and a second part. The second part of the proximal handle can be releasably attached to the tissue marker proximal end so that the second part can be removed to allow the delivery sleeve to be removed proximally over the tissue marker after it is affixed to tissue. The distal portion of the marker can include a plurality of longitudinally extending arms when unconstrained project outward from the shaft to retain the marker's position in tissue.

主权项

1. A tissue position marker assembly comprising:
a tissue marker including an elongate shaft defining a longitudinal direction having a plurality of flexible arms projecting outward from the shaft proximate a distal end thereof substantially perpendicular to the longitudinal direction; a delivery sleeve having a lumen therethrough, wherein the tissue marker is slidably disposed within the lumen of the delivery sleeve to constrain the arms to extend generally longitudinally and fit therein; and, a proximal handle coupled to the tissue marker and delivery sleeve, wherein the proximal handle includes a first portion secured to a proximal end of the delivery sleeve and a second portion secured to a proximal end of the elongate shaft of the tissue marker, wherein a portion of the shaft of the tissue marker extending between a proximal end of the first portion of the proximal handle and a distal end of the first portion of the proximal handle is exposed to an exterior of the first portion of the proximal handle with the second portion of the proximal handle coupled to the first portion of the proximal handle; and wherein the first portion and the second portion interlock to non-rotatably secure the first portion and second portion together.