Castroviejo Needle Holder - Tungsten Carbide
Alloy / Material: Surgical Stainless Steel with Tungsten Carbide jaws Length: 14 cm Tip Shape: Straight Tip Width: 1.5 mm Clamping Length: 10 mm Lockable: Yes

Castroviejo Needle Holder - Tungsten Carbide
The Castroviejo Needle Holder with tungsten carbide jaws is the gold-standard needle holder for microsurgical suturing in rodents and small animals. The hardened tungsten carbide inserts grip even the finest needles without slipping or marring, while the spring-action handle with internal locking mechanism gives precise, fatigue-free control during long microsuturing procedures.
Specifications
- Catalog number: 12565-14
- Material: Surgical Stainless Steel body, Tungsten Carbide jaws
- Length: 14 cm
- Tip Shape: Straight
- Tip Width: 1.5 mm
- Clamping Length: 10 mm
- Lockable: Yes
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Micro-Surgery
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Fine Science Tools microsurgery instruments — including forceps, scissors, and surgical clips — are standard in animal surgery labs worldwide. They are cited across thousands of neuroscience, physiology, and pharmacology studies involving rodent surgeries, stereotaxic procedures, and tissue preparation.
What is the Castroviejo Needle Holder - Tungsten Carbide used for in microsurgery?
The Castroviejo Needle Holder with tungsten carbide jaws is used for grasping and driving microsurgical needles during suturing of vessels, nerves, and other delicate tissues. The TC jaws provide a non-slip grip on even the finest needles, making it the standard needle holder for rodent vascular and neurosurgical procedures.
What material is the Castroviejo Needle Holder made from?
The Castroviejo Needle Holder body is manufactured from high-grade surgical stainless steel, with replaceable tungsten carbide inserts in the jaws. The TC jaws provide superior grip and wear resistance compared to plain stainless steel jaws.
Is the Castroviejo Needle Holder - Tungsten Carbide autoclavable and reusable?
Yes. The Castroviejo Needle Holder withstands standard autoclave cycles (121 °C, 15 min) and can be reused across many procedures. The tungsten carbide jaws are long-lasting but should be inspected periodically for wear.
Which animal species is the Castroviejo Needle Holder appropriate for?
The Castroviejo Needle Holder at 14 cm with 1.5 mm tip width and 10 mm clamping length is dimensioned for microsurgery on mice, rats, and other small animals, matching the scale of microsurgical needles (typically 7-0 to 11-0) used in rodent procedures.
What is the difference between the Castroviejo and the Olsen-Hegar needle holders?
The Castroviejo Needle Holder (12565-14) is a pure needle holder with TC jaws designed only for grasping and driving needles, optimised for microsurgical precision. The Olsen-Hegar (12002-12) combines needle holder with scissors in one instrument, useful for quick suture cutting without changing tools but with slightly less specialised grip than the Castroviejo TC.
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