Kerrison Rongeurs

Kerrison Rongeurs, SKU PS-OT-0835, Model PS-9333, is a spinal and orthopedic punch rongeur manufactured from German stainless steel for controlled bone removal in confined decompression corridors. The available variants are PS-9333 Shaft Length 8″ (20.3cm) 1mm to 10mm, PS-9334 Shaft Length 9″ (22.9cm) 1mm to 10mm, PS-9335 Shaft Length 10″ (25.4cm) 1mm to 10mm, and PS-9336 Shaft Length 12″ (30.5cm) 1mm to 10mm. The instrument has a long shaft, distal footplate, sliding punch jaw, angled working end, pivoted trigger-handle mechanism, spring return, and controlled palm grip for sequential removal of lamina, ligamentum flavum, foraminal bone, and posterior spinal margins. It is used in laminectomy, laminotomy, foraminotomy, posterior spinal decompression, microdiscectomy exposure, interlaminar window enlargement, and controlled trimming of laminar or facet edges. This rongeur supports neurosurgeons, spine surgeons, orthopedic surgeons, hospital operating rooms, ambulatory surgical centers, and procurement teams maintaining reusable spinal decompression trays.

Footplate Punch Geometry and Trigger Handle Control

The instrument works through a sliding punch mechanism that advances the cutting jaw against a fixed distal footplate when the handle is compressed. The footplate is placed beneath the laminar edge, foraminal margin, ligamentum flavum border, or bony window selected for removal, while the punch jaw closes over the target from above. This geometry allows controlled removal from a narrow spinal corridor without requiring a broad open bite. The long shaft keeps the operator’s hand away from the deep field and preserves space for retractors, suction, microscope use, nerve root protection, and assistant instrumentation. The angled distal working end supports approach to posterior elements while maintaining a stable hand position outside the wound. The pivoted trigger handle transfers controlled compression into shaft movement, and the spring return reopens the working end after each bite. The 1mm to 10mm jaw range supports fine decompression near protected neural tissue and broader removal when exposure and anatomy allow a larger bite.

Spinal Decompression Procedure Workflow

In operative workflow, Kerrison Rongeurs is introduced after exposure, retraction, hemostasis, and identification of the laminar, interlaminar, or foraminal margin requiring decompression. During laminectomy, the footplate is advanced beneath an exposed lamina edge and the punch removes bone in sequential passes until the intended window is created. In laminotomy, narrower jaw selections support controlled enlargement while preserving adjacent posterior elements. During foraminotomy, the instrument removes hypertrophic bone around the neural foramen after root protection and visualization are established. In microdiscectomy exposure, the rongeur can enlarge the laminotomy window before disc fragment retrieval with pituitary forceps or intervertebral disc rongeurs. For ligamentum flavum resection, the footplate is positioned under the ligament margin and the punch removes tissue along a controlled decompression line. The instrument is used with Penfield dissectors, nerve root retractors, curettes, pituitary forceps, suction, irrigation, bipolar forceps, hemostats, and spine exposure instruments.

PS-9333 PS-9334 PS-9335 and PS-9336 Selection

PS-9333 Shaft Length 8″ (20.3cm) is selected when the surgeon needs a shorter working distance for lumbar laminotomy, limited exposure, and direct posterior access. PS-9334 Shaft Length 9″ (22.9cm) provides additional reach while keeping hand control close enough for routine decompression work. PS-9335 Shaft Length 10″ (25.4cm) is selected for deeper operative fields, larger patients, and spinal levels where retractors or microscope positioning require more working distance. PS-9336 Shaft Length 12″ (30.5cm) supports extended reach during deep exposure where the surgeon needs hand clearance away from the operative corridor. Across all shaft lengths, the 1mm jaw width supports fine bone or ligament bites, while the 10mm end of the range supports broader removal when exposure permits. The shaft preserves access, the footplate defines the bite plane, the sliding jaw performs the punch action, and the spring handle returns the instrument to an open position for repeated decompression cycles.

Reusable Steel Processing and Procurement Records

German stainless steel provides the rigidity required for repeated punch closure, shaft alignment, footplate engagement, and operating room reprocessing. The reusable construction supports surgical workflows involving manual cleaning, ultrasonic cleaning where used, drying, inspection, packaging, and steam autoclave sterilization between procedures. Satin, dull, and mirror finish options support operating room and sterile processing preferences; reduced-glare surfaces assist visibility under surgical lighting, while mirror surfaces support visual inspection after cleaning. Reprocessing focuses on the footplate, sliding punch jaw, shaft channel, distal tip, pivot recesses, handle spring, and trigger surfaces because bone dust, ligament fragments, blood, saline, and surgical debris can collect around these areas. The Class I classification reflects a reusable manual surgical instrument with mechanical cutting action. CE marking and ISO 13485 documentation support regulated purchasing records for hospitals, surgical centers, and distributors. FDA compliance information supports medical device procurement files for regulated healthcare markets. The one-year warranty, MOQ of one piece, OEM availability, carton box packing, rust-free listing, and return or replacement support fit spine tray replenishment and distributor inventory workflows.