Versatility Indexable Gun Drills for Medical Instruments

Overview

Versatility Indexable Gun Drills for Medical Instruments are advanced drilling tools designed to meet the stringent precision and hygiene requirements of medical device manufacturing. These drills feature replaceable carbide inserts (indexable tips) that combine exceptional wear resistance with modular design, enabling efficient deep-hole drilling (up to 100x diameter depth) in challenging materials like titanium, cobalt-chromium alloys, and medical-grade polymers. Engineered for minimal burr formation and precise hole straightness (≤0.1mm/m deviation), they are indispensable for producing components such as orthopedic implants, cardiovascular stents, and surgical instruments.

The drill body is constructed from high-strength alloy steel with internal coolant channels, ensuring optimal chip evacuation and thermal management during deep-hole operations. Indexable inserts, available in multiple geometries (e.g., parabolic, straight flute), can be rotated or replaced to extend tool life, reducing downtime and cost compared to solid carbide drills. Compatibility with standard gun drill machines and strict adherence to medical device regulations (ISO 13485, FDA 21 CFR Part 820) make these drills the preferred choice for critical medical applications.

Features

Modular Indexable Design: Replaceable carbide inserts (3–6 cutting edges per insert) allow quick tip replacement, minimizing tool changeover time and material waste.

Precision Hole Geometry: Engineered spiral angles and cutting lip configurations ensure hole straightness, roundness (≤0.005mm deviation), and surface finish (Ra ≤ 0.8μm), essential for press-fit implants and fluidic pathways.

Coolant-Through Technology: Internal channels deliver high-pressure coolant directly to the cutting edge, improving chip breakage and reducing thermal stress on both tool and workpiece.

Material Compatibility: Optimized for medical materials:

Titanium Alloys (Ti-6Al-4V): Low-friction coatings reduce adhesion and prevent built-up edge.

Cobalt-Chromium (CoCrMo): Submicron carbide inserts withstand high hardness and abrasive wear.

Polymers (PEEK, POM): Sharp edge geometry minimizes melt formation and burrs.

Hygienic Design: Electropolished surfaces and smooth transitions eliminate crevices for easy sterilization, compliant with autoclaving (134°C, 2 bar) and ethylene oxide processes.

Applications

Orthopedic Implants: Drilling femoral stem canals and tibial plate holes in Ti-6Al-4V ELI, ensuring precise fit for osseointegration.

Cardiovascular Devices: Deep holes in stent grafts and pacemaker leads, requiring ultra-smooth surfaces to prevent thrombus formation.

Surgical Instruments: Hollow channels in laparoscopic tools and arthroscopic cannulas, maintaining dimensional accuracy for fluid flow and mechanical integrity.

Dental Implants: Micro-drilling (0.5mm–3mm diameter) in zirconia and titanium for root form implants, where thread precision impacts primary stability.

FAQ

Q: What is the maximum depth-to-diameter ratio these drills can handle?

A: Standard drills achieve 50x D, with specialized models capable of 100x D in stable setups. Depth capacity depends on workpiece material and machine rigidity—consult our engineering team for recommendations.

Q: How do indexable inserts compare to solid carbide drills in medical applications?

A: Indexable drills offer cost savings through insert rotation/replacement, while solid carbide drills excel in ultra-small diameters (<1mm). Both options are available depending on your hole size and volume needs.

Q: Are these drills certified for use in FDA-regulated medical device production?

A: Yes, our manufacturing facilities are ISO 13485 certified, and all drills undergo biocompatibility testing (ISO 10993) for contact with body tissues and fluids.

Q: How should I maintain these drills to ensure long-term precision?

A: Regularly inspect inserts for wear (replace at first sign of edge chipping), clean coolant channels to prevent blockages, and store in sterilized, moisture-free containers when not in use.

Indexable Gun Drills

These drills are offered in any diameter from 0.626 to 1.125 inch. Only 5 insert sizes cover entire range.

Inserts are direct fit and require no adjustment to produce on size bores.

The drills utilize screwed in guide pads

Coated pads are also available.

specifications