Instrument Set for TENS Nails Type II – Pediatric ESIN Surgical Workflow

Instrument Set for TENS Nails Type II, SKU PS-OP-5358, is a 26-instrument German-forged stainless steel orthopedic system supplied with a dedicated container for elastic stable intramedullary nailing. Its PS-150 configuration comprises a hammer, sliding hammer, straight elastic-nail impactor, 4.5 mm pin wrench, awl, elastic-nail plier, inserter, triangular end-cap wrench, end-cap driver, nail cutter, bevelled impactor, two 2.7 mm × 125 mm plain-shank drills with Jacobs chuck ends, two 3.2 mm × 145 mm quick-coupling drills, two 4.5 mm × 145 mm quick-coupling drills, 4.5/3.2 mm double drill guide, small F reduction tool, 180 mm curved awl for clavicular fractures, three adjustable reductors, rotatable cutter wrench, inserter key, and hammer guide. Pediatric orthopedic and trauma surgeons employ these components during Titanium Elastic Nail System and elastic stable intramedullary nailing of selected femoral, tibial, humeral, radial, and ulnar shaft fractures, together with elastic fixation of selected clavicle fractures. The system covers reduction, cortical portal creation, nail capture, advancement, impaction, trimming, end-cap engagement, and extraction in children’s hospitals, trauma units, orthopedic centers, and ambulatory surgical facilities.

Instrument Interfaces and Force Transmission

The elastic-nail inserter secures the implant through a dedicated clamping interface, allowing the surgeon to regulate rotation and axial movement while crossing the fracture. Its separate key tightens or releases this connection without using the gripping plier as an improvised control. When the external end remains coaxial with the entry portal, the straight impactor directs hammer energy along the nail. The bevelled pattern presents an offset working surface for terminal seating near the cortex, where a straight striking pathway has limited clearance. The hammer guide keeps impaction aligned with the coupled assembly and reduces lateral displacement of the striking instrument. Following definitive positioning, the cutter divides the protruding metal; the rotatable wrench operates or reorients that cutting mechanism within a restricted approach. The triangular wrench and dedicated end-cap driver engage their matching implant interfaces during compatible construct closure. For removal, pivoted plier jaws capture the accessible nail end, and the sliding hammer converts travel of its mass into controlled reverse axial impacts. The 4.5 mm pin wrench supplies rotational leverage at its corresponding interface. Standard and curved awls penetrate the selected cortex, whereas the double drill guide stabilizes powered preparation. F-tool and adjustable reductor geometry applies directed leverage to displaced fragments during alignment.

Operative Sequence for Pediatric Long-Bone Fixation

After fluoroscopic assessment, the surgeon restores length, coronal and sagittal alignment, and rotation before marking entry portals that remain clear of the physis. In femoral and tibial shaft procedures, the F tool or adjustable reductors maintain correction while the awl or guided drill opens the cortex. Each prebent nail is captured by the inserter and advanced alternately so the paired implants develop balanced contact at the entry segment, fracture region, and opposite metaphyseal canal. Hammer blows delivered through the straight impactor progress an accessible end; the bevelled instrument manages final seating when less external length remains. Humeral fixation follows the chosen antegrade or retrograde approach with protection of the radial nerve and growth plate. Radius and ulna fractures require narrow access and controlled rotation as each elastic implant crosses its respective fracture line. For selected displaced midshaft clavicle fractures, the 180 mm curved awl follows the S-shaped canal before flexible nail introduction. When fluoroscopy confirms length, alignment, rotation, fracture capture, and end position, the cutter shortens the exposed segment and the driver system places the compatible end cap. At planned removal after union, the plier establishes purchase and the sliding hammer withdraws the implant along its existing intramedullary path.

Diameter, Length, and Reduction Component Selection

The paired 2.7 mm × 125 mm drills use plain shafts and Jacobs chuck ends, providing a compact option for narrower cortical portals in selected pediatric radius, ulna, or humeral fixation. Two 3.2 mm × 145 mm quick-coupling bits combine additional reach with rapid attachment during intermediate femoral or tibial entry preparation. The 4.5 mm × 145 mm pair forms a wider access channel when patient anatomy, cortical thickness, and the compatible nail technique require it. A double guide accepts the 3.2 and 4.5 mm diameters, centers the bit against the cortex, and maintains the intended approach away from the growth plate. The standard awl supports manual cortical opening, while the 180 mm curved instrument follows the clavicular trajectory. Three adjustable reductors provide separate working options for persistent translation or angulation; the small F tool adds localized leverage across the fracture. The pin wrench operates a 4.5 mm interface, and the inserter key controls implant capture. Straight versus bevelled impactor selection is governed by terminal orientation and available striking clearance. The end-cap wrench and driver complete a compatible closure step. Plier jaws, sliding hammer, cutter, and rotatable wrench serve the removal and terminal-management stages. Duplicate drills also permit immediate replacement if a working bit becomes damaged during a case.

Reusable Steel Construction and Sterile Processing

German-forged stainless steel provides the combination of surface hardness and core toughness needed across drill flutes, awl points, impactor faces, driver profiles, reduction tools, gripping jaws, and cutting surfaces. Corrosion resistance supports repeated exposure to validated cleaning chemistry, rinsing, drying, inspection, packaging, and steam sterilization. The satin finish limits glare under operating lights and allows sterile-processing staff to identify retained soil, corrosion, blunt points, bent shafts, chipped cutting geometry, or misaligned jaws during inspection. Hinged pliers, adjustable reductors, and the cutter are cleaned in their open positions so solution reaches pivots and working surfaces. Guide bores, drill flutes, inserter interfaces, end-cap drivers, and sliding-hammer components require direct brushing or flushing before final rinse. The set is supplied non-sterile and is processed before first use and following every operation under the healthcare facility’s validated reusable-instrument protocol. Each item is returned to its assigned container position without overlapping sharp or cutting ends, and the count includes duplicated drills plus three reductors. CE documentation addresses applicable European conformity assessment, while ISO 13485 identifies manufacture within a medical-device quality management system. United States procurement separately evaluates FDA classification, registration, listing, labeling, and importer documentation rather than treating CE or ISO status as FDA approval.

Products Specification 

How does this Type II system differ from the PS-149 TENS Nails Instruments Set?
The Instrument Set for TENS Nails Type II contains dedicated end-cap controls and expanded reduction instrumentation. The PS-149 TENS Nails Instruments Set centers on the core entry, insertion, impaction, trimming, and extraction sequence. This PS-150 configuration adds a triangular end-cap wrench, separate end-cap driver, inserter key, rotatable cutter wrench, and three adjustable reductors. It also includes two units of every listed drill diameter rather than one of each working size. Both systems provide straight and bevelled impactors, an inserter, cortical-entry tools, reduction control, nail gripping, and slide-hammer extraction. Selection is determined by implant compatibility and whether the operative plan incorporates the Type II end-cap and adjustable-reduction components.

Which drill diameter is used for different pediatric fracture sites?
The planned cortical opening is selected according to patient size, cortex thickness, nail dimensions, entry trajectory, and implant technique. A 2.7 mm × 125 mm drill provides compact access for selected radial, ulnar, or humeral procedures. The 3.2 mm × 145 mm quick-coupling bit offers intermediate diameter and working reach for femoral or tibial entry preparation. The 4.5 mm × 145 mm option creates a broader portal when required by larger adolescent anatomy and the compatible elastic nail. The 4.5/3.2 mm guide centers the matching bit and maintains the selected direction away from the physis. The Instrument Set for TENS Nails Type II supplies two drills of each diameter to maintain continuity during the operative workflow.

How should CE, ISO 13485, and FDA information be assessed?
CE documentation addresses applicable European conformity requirements for the Instrument Set for TENS Nails Type II. ISO 13485 identifies a medical-device quality management system covering controlled manufacture, traceability, records, and corrective action. These designations do not constitute United States FDA approval. US hospitals and distributors evaluate the relevant device classification, establishment registration, listing, labeling, importer, and shipment records. Procurement files retain the quotation, product SKU, lot or batch information, instructions for use, and supplied conformity documents. This structure supports separate regulatory review for US, European, Pakistani, Vietnamese, and other international orders.

How do the inserter, impactors, and sliding hammer control the nail?
The inserter clamps the elastic implant while the separate key controls tightening and release at the connection. During advancement, the surgeon maintains axial pressure and rotational orientation through that secured handle interface. The straight impactor transmits hammer energy along a coaxial exposed end, while the bevelled version seats a terminal segment positioned close to the cortex. A hammer guide keeps the striking pathway aligned with the working assembly. During removal, the plier’s pivoted jaws grasp the accessible implant and establish the extraction axis. The sliding hammer then applies repeated reverse impulses so the Instrument Set for TENS Nails Type II withdraws the nail without using the cortical edge as a lever point.

How is the complete PS-150 set reprocessed and reconciled?
The Instrument Set for TENS Nails Type II is supplied non-sterile and requires processing before initial use and after each procedure. Hinged, adjustable, sliding, and detachable mechanisms are opened or separated before cleaning. Staff brush or flush drill flutes, guide channels, gripping jaws, inserter connections, cutter faces, driver profiles, and sliding surfaces. The count covers 26 operative pieces plus one container, including two examples of every drill size and three adjustable reductors. After rinsing, drying, and functional inspection, the organized case is packaged and steam sterilized using the facility’s validated reusable-instrument cycle. PS-150 codes support operating-room reconciliation, replacement requests, distributor documentation, and after-sale service.