Ainsworth RubberDam Punch Forceps 17cm

Ainsworth Rubber Dam Punch Forceps 17cm by Rio Instruments is a foundational isolation instrument used across endodontic, restorative, and pediatric dental procedures. Achieving complete isolation of the operating field is critical for successful root canal therapies, adhesive bonding, and moisture-sensitive composite restorations. The Ainsworth punch facilitates this process by creating uniform, circular perforations in latex or non-latex rubber dam sheets, ensuring tight seals around tooth necks and preventing fluid leakage or contamination.

Engineering & Mechanical Precision

Crafted from high-density surgical stainless steel, the Ainsworth Punch Forceps combines mechanical leverage with exacting metallurgical alignment. The key mechanism consists of a precision-ground, hardened plunger pin attached to the working arm and a multi-aperture rotating wheel fixed to the base anvil.

When compressed, the plunger pin enters the selected die hole with zero lateral play, producing a clean shear cut through the dam material. Ordinary or worn punches often create jagged, incomplete cuts that leave tiny micro-tears along the margin of the hole. Under stretching and clamping tension, these micro-tears quickly spread into full sheet splits, compromising the sterile field. The Rio Instruments Ainsworth Punch eliminates this risk by cutting smooth, tear-proof edges every time.

Multi-Size Rotating Die Wheel

The integrated circular anvil houses five graduated aperture sizes, allowing the operator or dental assistant to adjust hole diameters rapidly without swapping instruments:

• Hole 1 (Smallest): Ideal for mandibular incisors and small single-rooted teeth.

• Hole 2: Designed for maxillary incisors and canines.

• Hole 3: Sized for premolars and bicuspids.

• Hole 4: Tailored for standard maxillary and mandibular molars.

• Hole 5 (Largest): Formatted for anchor molars, crowned teeth, or placement over rubber dam clamps.

The wheel features a positive tactile detent mechanism that clicks firmly into alignment under each hole size, preventing accidental rotation during the punching stroke.

Clinical Efficiency & Ergonomics

Designed for demanding daily practice, the instrument features ergonomically curved handles equipped with a heavy-duty leaf spring mechanism. This spring-loaded design automatically opens the forceps handles after every punch stroke, allowing rapid single-handed operation when preparing multi-tooth rubber dam layouts. The textured handle grips ensure a secure, non-slip hold even when operating with wet gloves, while the balanced weight distribution reduces operator hand fatigue during complex isolation procedures.

Durability & Sterilization Protocols

Every Ainsworth Rubber Dam Punch Forceps manufactured by Rio Instruments undergoes rigorous passivation and polishing treatments. This passivation process removes free iron from the stainless steel surface, creating a protective chromium oxide layer that prevents oxidation, pitting, and corrosion. The instrument is fully compatible with standard steam autoclave cycles, chemical vapor sterilization, and ultrasonic cleaning baths, ensuring compliance with strict global infection control standards.

Key Features & Clinical Benefits

• Surgical-Grade Stainless Steel Construction: Forged from high-tensile stainless steel to provide maximum structural rigidity, wear resistance, and long-term mechanical reliability.

• 5-Aperture Rotating Template Disk: Features a smooth-turning selector wheel with five calibrated hole sizes to accommodate all anatomical tooth shapes and clinical isolation setups.

• Precision Plunger Alignment: Delivers clean, burr-free perforations that prevent rubber dam material from tearing under high tension during clamp placement.

• Tactile Click-Lock Wheel: Built-in detent mechanism securely locks the chosen die hole directly beneath the plunger pin to prevent misaligned cuts.

• Ergonomic Spring-Action Handles: Double-leaf spring mechanism automatically resets the handle after each stroke, speeding up multi-hole punching routines.

• Passivated Anti-Corrosion Finish: Satin polish prevents glare under intense operating lights and safeguards against chemical staining and thermal corrosion.

• Autoclavable & Reusable: Certified for repeated steam autoclaving at 134°C (273°F) without mechanical degradation.

Technical Specifications

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