Keyes Dermal Punch 4mm, 10cm

Clinical Application

Provides a controlled circular core of skin for diagnostic biopsy or removal of small cutaneous lesions. The 4 mm diameter is commonly used for punch biopsies when a full-thickness epidermal and dermal specimen is required for histopathology, immunofluorescence, or microbiology. Indications include sampling of rashes, nodules, pigmented lesions, and small cysts in dermatology, plastic surgery, ENT, and outpatient clinics.

Design & Configuration

The instrument employs a hollow, tubular cutting edge sized to produce a 4 mm cylindrical specimen. Manual rotation and downward pressure allow the cutting edge to core through epidermis and dermis with minimal peripheral tissue distortion. The 10 cm overall length balances clinical reach and tactile control for precise placement, especially in confined or awkward anatomical locations. The single-handed design permits concurrent use of forceps or hemostats for specimen handling and wound management.

Instrument Specifications

• Instrument type: Dermal punch
• Pattern / model: Keyes
• Diameter: 4 mm
• Overall length: 10 cm
• Tip design: Hollow circular cutting edge for coring skin
• Typical use: Percutaneous skin biopsy and excision of small lesions
• Material: Stainless steel
• Reusable: Yes (sterilizable)

Material & Construction

Constructed from surgical-grade stainless steel to provide a sharp, durable cutting edge and long service life under repeated sterilization cycles. The simple tubular blade geometry facilitates cleaning and decontamination. Designed for reprocessing in standard sterile processing workflows, including steam sterilization.

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