The "over the core wire" technique for detachable coil retrieval

Area of Science:

• Interventional Neuroradiology
• Vascular Surgery

Background:

• Detachable coils are commonly used for endovascular embolization.
• Malpositioning of detachable coils can complicate embolization procedures.
• Retrieval of malpositioned coils is crucial to avoid complications.

Purpose of the Study:

• To describe a technique for retrieving malpositioned detachable coils.
• To report the outcomes of this retrieval technique in clinical cases.

Main Methods:

• Four cases of malpositioned detachable coil retrieval were analyzed.
• A fixed-loop snare (Gooseneck microsnare) was used to grasp the stretched core wire.
• A hydrophilic microcatheter facilitated the over-the-core wire retrieval technique.

Main Results:

• Successful retrieval of malpositioned detachable coils was achieved in all four cases.
• No additional neurological deficits were observed in any of the patients post-retrieval.

Conclusions:

• The described technique using a fixed-loop snare and microcatheter is effective for retrieving malpositioned detachable coils.
• This method allows for safe retrieval without causing further neurological injury.