Clip with enclosed spring for aneurysm surgery. Technical note

Area of Science:

• Neurosurgery
• Biomedical Engineering
• Materials Science

Background:

• Aneurysm clips are critical in neurosurgery to secure blood vessels.
• Existing clips can have weaknesses due to manufacturing processes and potential for tissue entrapment.
• The need for improved clip design for enhanced safety and efficacy is recognized.

Purpose of the Study:

• To introduce a newly designed surgical clip for treating aneurysms.
• To highlight the unique features of the clip that address limitations of current designs.
• To evaluate the clip's suitability for neurosurgical applications.

Main Methods:

• The clip is designed with a fully concealed coil spring within hub sections.
• Computer milling from solid, nonmagnetic stainless steel stock is employed.
• The design avoids stresses and weaknesses associated with traditional wire or sheet metal fabrication.
• The clip is opened by applying pressure to solid milled surfaces, protecting the spring.

Main Results:

• The concealed spring prevents handling and tissue entrapment.
• Computer milling from solid stock ensures structural integrity and avoids manufacturing-induced weaknesses.
• The opening mechanism protects the spring from weakening or bending during use.
• The clip is compatible with appliers offering fixed or rotatable (180 degrees) grasping.

Conclusions:

• The new aneurysm clip design offers enhanced safety and durability.
• Its unique features, including a protected spring and solid milled construction, improve upon conventional designs.
• The clip is well-suited for surgical application in aneurysm repair.