Implantable device detachment systems and associated devices and methods

摘要

Systems, devices, and methods for detaching an implantable device from a delivery system are disclosed herein. One aspect of the present technology, for example, is directed toward a system that includes an elongated shaft having a first coupling element with a first opening, an implantable device having a second coupling element with a second opening, and an elongated member configured to extend through the shaft. The system can have a retained state in which the elongated member is positioned through the first opening and the second opening, and a released state in which the elongated member is removed from the second opening and the first coupling element is configured to move proximally apart from the second coupling element with an axial displacement not greater than an outer diameter of the first coupling element at a location along the length of the first coupling element proximate the first opening.

主权项

1. A system for intravascular operation in a human, comprising:
an elongated shaft configured to be intravascularly positioned at a treatment site within a blood vessel of a human, the elongated shaft defining a lumen therethrough, wherein the elongated shaft has a distal portion with a central longitudinal axis, a first coupling element at the distal portion, the first coupling element having a first opening, and a detent positioned along a portion of the lumen; and an implantable device including a second coupling element having a second opening, wherein the implantable device has a central longitudinal axis; an elongated member configured to extend through the shaft, the elongated member including a protrusion extending radially outwardly from the elongated member at a location along the elongated member such that the protrusion abuts the detent of the elongated shaft at a distal-most position of the elongated member in which the elongated member engages the second coupling element and is prevented from further axial movement with respect to the shaft; wherein the system has a retained state in which (a) the central longitudinal axis of the implantable device and the central longitudinal axis at the distal portion of the elongated shaft are generally aligned, (b) a portion of the second coupling element is located proximal to the first opening, and (c) the elongated member is positioned through the first opening and the second opening such that the implantable device is retained with the shaft, and wherein the system has a released state when the elongated member is removed from the second opening, and in the released state the first coupling element is configured to move proximally apart from the second coupling element with an axial displacement less than an outer diameter of the first coupling element at a location along the length of the first coupling element proximate the first opening.