Lock and release implant delivery system

摘要

Injection-molded devices and systems for graft or other tissue delivery, methods for their single-use in delivery of an implant, and kits for their sterile delivery to a practitioner are disclosed herein. Systems for implant delivery comprise an injection moldable implant body and an insertion device comprising: an inner and outer shaft that form a locking mechanism that secures an implant body in place and releases it upon placement within a patient. Systems are configured to be manufactured by injection molding, such that they can be cost-effectively manufactured and discarded after a single use to avoid costs and risks associated with re-sterilization and cleaning, but can in some cases optionally also be manufactured by machining to be re-sterilized and reused.

主权项

1. An implant delivery system comprising: an implant insertion device having a longitudinal axis, the device comprising:
i) an inner shaft comprising: an inner shaft body extending along the longitudinal axis; a knob at a base of the inner shaft body, the knob comprising a first interface; an inner shaft tip at an insertion end of the inner shaft body, wherein the inner shaft tip is not substantially cylindrically circular; and ii) an outer shaft extending along the longitudinal axis and configured to hold the inner shaft body therein, the outer shaft having a proximal end having a proximal rim at the most proximal portion of the proximal end, the outer shaft comprising: a hollow outer shaft body, wherein the outer shaft body is configured to accommodate the inner shaft body therewithin; an outer face; an outer shaft opening at the outer face of the outer shaft; a first and a second window positioned on opposite sides of the outer shaft, wherein the first window and the second window are continuous with the hollow interior of the hollow outer shaft body, and wherein the first window and the second window overlap in part and do not overlap in part; and iii) a ramp that extends from the proximal rim of the outer shaft in a proximal direction that is parallel to the longitudinal axis; and wherein the inner shaft tip is configured to fit through a main slot of an implant body and rotate in a chamber of the implant body so as to lock the implant body to the inner shaft when the ramp interfaces with the first interface of the knob.