Titanium, silver, and tantalum clips in brain tissue

Area of Science:

• Neurosurgery
• Biomaterials Science
• Histopathology

Background:

• Neurosurgical clips are essential for hemostasis.
• Conventional clips made of silver and tantalum can elicit tissue reactions.
• A novel titanium haemoclip has been developed for potential use in brain surgery.

Purpose of the Study:

• To compare the brain tissue response to titanium, silver, and tantalum clips.
• To evaluate the biocompatibility of a new titanium haemoclip in neural tissue.

Main Methods:

• Titanium, silver, and tantalum wires were implanted into rabbit white matter.
• Brain specimens were analyzed after one and six months using light microscopy.
• Histological staining included haematoxylin eosin and phosphotungstic acid Haematoxylin.

Main Results:

• Titanium implants showed no discernible tissue reaction or pigmentation.
• Tantalum clips resulted in surrounding pigmentation.
• Silver clips caused both pigmentation and reactive gliosis in brain tissue.

Conclusions:

• Titanium haemoclips demonstrate excellent biocompatibility in brain tissue.
• Titanium represents a superior material compared to silver and tantalum for neurosurgical clips.
• The absence of tissue reaction suggests titanium is a safer option for brain surgery.