Related Experiment Video
Updated: Dec 10, 2025
Simulator Training for Endovascular Neurosurgery
Published on: May 6, 2020
Microcatheter Originating Debris during Neuroendovascular Procedures: Mechanism of Dislodgement and Its Prevention
I Kan1, K Karagiozov2, S Ito3
1From the Departments of Neurosurgery (I.K., K.K., Y.M.) isseikan@gmail.com.
Abstract:
Embolic material dislodgement from microcatheters can potentially induce subclinical brain damage as evidenced by a delayed enhanced or other type of lesions. Some of the most frequently used microcatheters were investigated in vitro in different setups and combinations with different port insertions and rotating hemostatic valves. It was found that side port application increases injury to the catheter surface and debris dislodgement by conflicting with internal ledges in rotating hemostatic valves. This initial observation suggests the need for measures to remove the produced debris during such procedures.
Insights
Microcatheter use in procedures can cause debris, potentially leading to brain damage. Side port use exacerbates this by damaging the catheter and dislodging material.
Area of Science:
- Neurosurgery
- Medical Device Engineering
Background:
- Microcatheters are crucial for neurovascular interventions.
- Embolic material dislodgement can cause subclinical brain damage, indicated by delayed contrast enhancement or lesions.
Purpose of the Study:
- To investigate microcatheter-induced debris dislodgement in vitro.
- To identify factors contributing to embolic material release during neurovascular procedures.
Main Methods:
- In vitro investigation of frequently used microcatheters.
- Testing various setups, port insertions, and rotating hemostatic valves.
Main Results:
- Side port application significantly increases catheter surface injury.
- Conflicting internal ledges in rotating hemostatic valves contribute to debris dislodgement.
Conclusions:
- Side port usage in microcatheters increases the risk of embolic debris.
- Developing methods to mitigate debris during procedures is necessary.
