English
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TOOLMED
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1 Pcs
5-7 days
Product Description
The set includes specialized trocars and working cannulas that facilitate a controlled, multi-stage insertion. This 'layer-by-layer' technique minimizes the risk of over-penetration and allows the surgeon to confirm the pedicle trajectory before breaching the vertebral cortex.
Designed specifically for the anatomy of the lumbar spine, the instruments ensure a safe, reproducible entry point and trajectory through the pedicle, avoiding critical neurological structures (e.g., spinal cord and nerve roots).
The system utilizes a 4.2mm working diameter, balancing the need for sufficient rigidity for bone penetration with the benefits of a small diameter, minimally invasive approach.
Features clear depth markings and ergonomic handles on the trocars and cannulas, providing the surgeon with excellent tactile feedback and visual control during the crucial moment of pedicle wall penetration.
The fundamental instrument set for creating the working channel into the lumbar or lower thoracic vertebral body prior to balloon insertion.
Can also be utilized for creating the access channel for cement injection in vertebroplasty, particularly where precise needle placement is paramount.
The cannula and trocar can serve as a primary access kit for targeted vertebral biopsy or drainage procedures in the spine.
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This is a specialized instrument set used in Kyphoplasty to create the initial working path into a fractured vertebra in the lower spine (lumbar region). The term "Layer by Layer Puncture" describes the careful, multi-step surgical technique where the outer casing (cannula) is inserted sequentially over a sharp trocar, allowing the surgeon to precisely and safely navigate the small, vital path through the pedicle and into the center of the vertebral body.
Its primary application is to safely access the compromised vertebrae (L1 through L5) for the treatment of Vertebral Compression Fractures (VCFs). Because the lumbar region houses major nerve roots, the precision offered by the 4.2mm layered puncture technique is crucial for minimizing trauma and avoiding neurological injury during the vertebral augmentation procedure.
The main advantage is enhanced procedural safety. Compared to a single-stick approach, the layered technique provides tactile feedback and visual confirmation (under fluoroscopy) at each step. This allows the surgeon to identify and safely penetrate the tough cortical bone of the pedicle while maintaining strict control over the trajectory and avoiding accidental breach into the spinal canal.
The 4.2mm diameter is chosen to provide a sufficient working channel for inserting the Kyphoplasty Balloon and delivering the viscous bone cement, while still being small enough to be considered minimally invasive. Biomechanically, the smooth final cannula reduces friction and bone chipping, leading to cleaner access compared to larger or less precise systems.
The technique begins with a guide needle or trocar directed towards the pedicle entry point. A blunt-tipped instrument then follows the needle to safely navigate the soft tissues. Once the pedicle is identified, the sharp trocar is used to penetrate the outer cortex. The blunt obturator is then often used to progress through the cancellous bone to the desired location, preventing accidental puncture of the anterior vertebral wall, all under continuous fluoroscopic visualization.
The minimal invasiveness achieved by the 4.2mm layered puncture set translates directly to faster patient recovery. Patients experience less soft tissue pain, reduced blood loss, and a smaller wound site, allowing for rapid ambulation and discharge following the Kyphoplasty procedure.
The 4.2 Lumbar Layer by Layer Puncture (PKP) system from TOOLMED is an indispensable set for safe and precise vertebral augmentation. By prioritizing a controlled, layered approach to access, the system minimizes risks in the anatomically challenging lumbar spine, setting the stage for successful Kyphoplasty and rapid pain relief for VCF patients.
The 4.2mm working cannula is a standard size and is typically compatible with most balloon catheters, bone cement delivery systems, and inflation devices used in contemporary Kyphoplasty procedures.
Puncture technique is crucial in the lumbar spine due to the larger size and greater density of the pedicles, as well as the proximity of major nerve roots and the spinal cord, necessitating maximum control to prevent neurological injury.
The instruments are designed for use in both unilateral (one side) and bilateral (two sides) access, depending on the surgeon's preferred technique and the morphology of the vertebral fracture.
All permanent components (cannulas, trocars) are made from high-grade, surgical stainless steel to ensure the necessary strength and stiffness for penetrating the hard cortical bone of the pedicle.
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