Key Characteristics
- Automatic Reopening: A built-in spring mechanism (often a detachable leaf spring) reopens the instrument after each stitch, eliminating the need for the surgeon to manually manipulate finger rings to open the jaws.
- Handle Design: These typically lack traditional finger loops and are held with a “pen-like” or “forceps” grip. This allows for 180-degree rotation with minimal wrist movement.
- Locking Mechanism: Many models feature a spring-lock handle that clicks to engage and releases with a further squeeze
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Common Types
- Castroviejo Needle Holder: One of the most common spring-loaded drivers, designed for extremely fine sutures (typically 5-0 to 8-0) in eye or vascular surgery.
- Barraquer Needle Holder: Similar to the Castroviejo, often used in ophthalmic procedures for its precision in tight spaces.
- Micro-Spring Needle Holders: General term for small, spring-loaded drivers used in various microsurgical procedures to maintain a stable grip with less physical force.
Comparison: Traditional vs. Spring-Action
| Feature | Traditional (e.g., Mayo-Hegar) | Spring-Action (e.g., Castroviejo) |
|---|---|---|
| Grip Style | Finger rings / Palmed | Pen-like / Forceps |
| Opening | Manual release of ratchet | Automatic via spring |
| Ideal For | Large needles & heavy tissue | Fine needles & delicate tissue |
| Precision | Standard | High dexterity & 180° rotation |
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