An embolic implantation system configured to deliver an embolic implant intravascularly to a treatment site includes an elongated delivery tube to which the embolic implant is detachably attached by a flexible loop extending through a retaining ring or opening on the embolic implant and an elongated detachment member or pull wire extending through the delivery tube and flexible loop. The pull wire has a bump near its distal end that inhibits the pull wire from moving further distally when the bump presses distally against the flexible loop and/or retaining ring. The flexible loop and retaining ring thereby serve as a distal obstruction obstructing distal movement of the bump and thereby distal movement of the pull wire into the implant.

In various embodiments, a system for delivering an implantable device inside a body cavity includes: 1) a core cannula; 2) an access sheath; 3) an injection apparatus for filling the implantable device with one or more fluids; and 4) expanding members operatively connected to the core cannula for preventing the core cannula from advancing through a body orifice once the core cannula and expanding members exist the access sheath. According to particular embodiments, a distal end of the core cannula is pre-attached to the implantable device through a device locking member. In one or more embodiments, upon assessment, an injection apparatus is removed using an injection apparatus handle, the implantable device is detached from the core cannula via a device deployment handle (to be implanted), and the access sheath is removed.

A catheter includes a detachable tip assembly that when detached from the catheter may be used to occlude a body lumen or vessel. The detachable distal tip assembly may include an inflatable balloon disposed over and secured to a tubular member. The inflatable balloon may be in fluid communication within an inflation lumen extending within the catheter body. Upon reaching a target site within a body lumen or vessel, the detachable distal tip assembly may be released from the distal end of the catheter upon inflation of the balloon to a predetermined size.

Described herein are delivery devices and systems for delivering a detachable medical device and various associated methods of using such devices and systems.

An embolic device deployment system having a lumen with proximal and distal ends. An embolic device having a proximal retaining ring and an expandable member having a contracted and expanded state, with two apertures. The expandable member is disposed in the lumen in the expanded state. An engagement member has a distal loop extending through the retaining ring and a proximal loop extending into the lumen. The detachment member slides within the lumen and another of the apertures and is disposed through the loops. It comprises a bump on the detachment member between the loops. When the detachment member is in the distal loop and the distal loop is disposed within the retaining ring, the embolic device is in an engaged position. Pulling the detachment member withdraws it from the distal loop. The bump contacts the proximal loop to assist in the disengagement of the distal loop from the retaining ring to release the embolic device.

An apparatus is configured to be implanted within a biological lumen. The apparatus includes a plurality of magnetic elements and a coupling body. The magnetic elements are arranged in an annular array extending form an axis. The annular array defines an occludable opening configured to transition between an occluded state and an opened state. The magnetic elements include a first magnetic element and a second magnetic element. The second magnetic element is located adjacent to the first magnetic element. The second magnetic element includes a polymer magnetic material formed in a shape designed to geometrically interlock with the first magnetic element in the occluded state. The second magnetic element is configured to elastically deform to transition the occludable opening from the occluded state to the opened state. The coupling body is configured to affix to a portion of the first magnetic element and a portion of the second magnetic element.

An apparatus is configured to be implanted within a biological structure. The apparatus includes an annular retaining assembly and an occlusion member. The annular retaining assembly defines an annular opening and includes an outer ring and an inner ring. The outer and inner rings are disposed about a central axis. The outer ring also has an outer wall, an inner wall, and a bio-absorbable material. The inner ring defines an annular opening and is attached to the inner wall of the outer ring. The inner ring also includes a surface to promote tissue in-growth. The occlusion member extends from the annular retaining assembly toward the central axis. The occlusion member also includes a plurality of magnetics. The occlusion member is magnetically biased to a first position that substantially occludes the annular opening. The occlusion member is configured to elastically deform to a second position that substantially unblocks the annular opening.

An embolic implantation system configured to deliver an embolic implant intravascularly to a treatment site includes an elongated delivery tube to which the embolic implant is detachably attached by a flexible loop extending through a retaining ring or opening on the embolic implant and an elongated detachment member or pull wire extending through the delivery tube and flexible loop. The pull wire has a bump near its distal end that inhibits the pull wire from moving further distally when the bump presses distally against the flexible loop and/or retaining ring. The flexible loop and retaining ring thereby serve as a distal obstruction obstructing distal movement of the bump and thereby distal movement of the pull wire into the implant.

A parent artery occlusion (PAO) device which provides for immediate occlusion of a cerebral artery to isolate a defect. The PAO device includes a self-expanding wire-frame prolate structure which is partially covered with an ePTFE membrane.

A parent artery occlusion (PAO) device which provides for immediate occlusion of a cerebral artery to isolate a defect. The PAO device includes a self-expanding wire-frame prolate structure which is partially covered with an ePTFE membrane.