Therapeutic appliance releasing device

Abstract

Abstract This invention is a device (10) for releasing a therapeutic appliance, such as an embolic coil (12) inside an aneurysm (16). The device includes a coupling (24) of a shape memory alloy which is responsive to a change in temperature beyond a predetermined transformation point so as to change the shape of the coupling from a first configuration, wherein the coupling receives and holds the proximal end (72) of the coil, to a second configuration wherein the coil can be released from the coupling. An energy receiver (46) is operably associated with the coupling to heat the coupling to a temperature above the transformation point with laser or electrical energy received from an external source.

Inventors

• 👤 Vahid Saadat
• 👤 Samuel M. Shaolian
• 👤 Jeffrey J. Giba
• 👤 Hung H. Cao
• 👤 Randall Blair

Bibliographic Details