Ferris Smith Kerrison Punch down 4mm, 18cm

Clinical Application

This down-biting Kerrison punch is intended for precise removal of small bone and ligamentous tissue during spinal and neurosurgical decompression procedures such as laminotomy, laminectomy, foraminotomy, and microdiscectomy. The 4 mm bite size enables incremental nibbling of cortical and cancellous bone as well as ligamentum flavum, allowing the surgeon to work in tight corridors with controlled, tactile feedback.

Design & Configuration

The down-biting jaw geometry places the cutting edge on the undersurface of the tip, which is advantageous when working beneath the lamina or undercutting bone from a posterior approach. The Ferris-Smith handle-style configuration provides ergonomic grip and mechanical leverage to facilitate controlled, single-ended bites with repeatable closure force. At 18 cm overall length, the shaft offers reach into deeper operative fields while preserving a compact working profile for microscopes or tubular retractors.

Instrument Specifications

• 4 mm bite (jaw opening)
• Down-biting jaw orientation for undersurface bone removal
• Ferris-Smith handle-style configuration for leverage and control
• 18 cm overall length for extended reach in spinal corridors
• Intended for controlled bone and soft-tissue removal in spinal/neurosurgical procedures

Material & Construction

Constructed for repeated clinical use with durable stainless steel components and precision-ground cutting edges. The instrument is manufactured and finished to withstand routine cleaning and sterilization processes and to maintain functional reliability across multiple procedural cycles.

Quality & Compliance

Manufactured by FDA-registered OEM facilities and produced under strict quality control standards.

Brand Comparison

Comparable in form and function to equivalent instruments offered by major US medical suppliers.

Availability & Returns

• In-stock lead time: ships within ~1 week
• Out-of-stock lead time: 2–4 weeks
• Returns: 30-day return policy