The Penfield Dissector MRI Compatible No. 4 Single End 8 1/4″ is a premium neurosurgical instrument specifically engineered for delicate tissue dissection, periosteal elevation, and anatomical exploration during cranial, spinal, and microsurgical procedures. Designed with MRI compatibility in mind, this instrument is ideal for healthcare facilities that require surgical tools suitable for environments where magnetic resonance imaging compatibility is essential. Its precision-crafted No. 4 working end delivers exceptional control, making it an indispensable instrument for modern neurosurgical and spinal procedures.
The instrument features a single-ended Penfield No. 4 working tip, carefully designed to provide controlled tissue dissection and atraumatic manipulation of delicate anatomical structures. The rounded, finely shaped tip enables surgeons to elevate periosteum, separate tissue planes, retract soft tissues, and mobilize neural structures while minimizing trauma to surrounding nerves, blood vessels, and connective tissues. Its precise geometry offers outstanding tactile feedback, allowing accurate identification of anatomical landmarks during complex surgical procedures.
With an overall length of 8 1/4 inches, the Penfield Dissector provides an ideal balance of reach, maneuverability, and precision. The extended length allows surgeons to comfortably access both superficial and deeper operative fields while maintaining excellent instrument control. Its slim profile and balanced construction make it particularly effective for procedures performed under magnification, where delicate movements and steady handling are essential.
Manufactured from high-quality MRI-compatible surgical materials, the instrument offers exceptional durability, corrosion resistance, and dependable long-term performance. It is engineered to withstand repeated autoclave sterilization cycles while maintaining its structural integrity and precision. The satin anti-glare finish minimizes reflections under surgical lighting and operating microscopes, improving visualization while supporting efficient cleaning and maintenance in sterile environments.
The ergonomic handle is carefully designed to provide a secure grip and excellent balance throughout lengthy procedures. Its lightweight construction reduces hand fatigue while enhancing tactile sensitivity and instrument responsiveness. Surgeons benefit from smooth, controlled movements that improve precision during tissue dissection, periosteal elevation, and delicate microsurgical manipulation around critical anatomical structures.
The Penfield Dissector MRI Compatible No. 4 Single End 8 1/4″ is widely used in neurosurgery, spinal surgery, orthopedic spine surgery, and advanced microsurgical procedures. It is particularly valuable during craniotomies, laminectomies, spinal decompressions, tumor resections, and other operations requiring meticulous tissue handling. Combining MRI compatibility with precision engineering and ergonomic performance, this instrument delivers the reliability, safety, and surgical accuracy demanded in today’s operating rooms.
Key Features
- MRI-compatible surgical instrument
- Premium surgical-grade construction for long-lasting durability
- Penfield No. 4 single-ended working tip
- Overall length of 8 1/4″ for optimal reach and precision
- Designed for tissue dissection and periosteal elevation
- Excellent tactile feedback for delicate microsurgical procedures
- Satin anti-glare finish improves surgical visibility
- Ergonomic, lightweight, and balanced handle
- Corrosion-resistant and fully autoclavable
- Ideal for neurosurgery, spinal surgery, and orthopedic spine procedures
Product Specifications Table
| Specification | Details |
|---|---|
| Product Name | Penfield Dissector MRI Compatible No. 4 Single End 8 1/4″ |
| Material | MRI-Compatible Surgical Material |
| Instrument Type | Single-Ended Neurosurgical Dissector |
| Pattern | Penfield No. 4 |
| Overall Length | 8 1/4 inches |
| Design | Single End |
| Usage | Tissue dissection, periosteal elevation, soft tissue manipulation, anatomical exploration |
| MRI Compatibility | Yes |
| Reusability | Reusable |
| Sterilization | Autoclavable |
| Finish | Satin / Matte (Anti-Glare) |
| Application | Neurosurgery, spinal surgery, orthopedic spine surgery, microsurgery |
FAQs
1. What is the Penfield Dissector MRI Compatible No. 4 Single End 8 1/4″ used for?
It is used for precise tissue dissection, periosteal elevation, soft tissue manipulation, and anatomical exploration during neurosurgical and spinal procedures.
2. What does MRI compatible mean?
MRI compatibility means the instrument is manufactured from materials suitable for use in environments where magnetic resonance imaging compatibility is required, helping reduce magnetic interference and enhancing procedural safety.
3. What is the purpose of the Penfield No. 4 tip?
The Penfield No. 4 tip is designed for controlled tissue elevation, blunt dissection, periosteal lifting, and delicate manipulation of soft tissues around neural structures.
4. Is this instrument reusable?
Yes. It is fully reusable, corrosion-resistant, and designed to withstand repeated autoclave sterilization for professional surgical use.
5. Which surgical specialties commonly use this instrument?
It is widely used in neurosurgery, spinal surgery, orthopedic spine surgery, cranial surgery, and microsurgical procedures requiring precise tissue handling and MRI-compatible instrumentation.

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