DHS/DCS Plate Implant Instruments Set – 95°–135° Femoral Fixation

DHS/DCS Plate Implant Instruments Set, SKU PS-OP-7198, is a German stainless steel orthopedic system combining 40 femoral fixation implants, 26 instrument units, and one container. The implant module includes 135° dynamic hip compression plates in 4-hole 166.024, 5-hole 166.025, 6-hole 166.026, and 8-hole 166.028 configurations; 95° DCS plates in 6-hole 167.006, 8-hole 167.008, 10-hole 167.010, 12-hole 167.012, 14-hole 167.014, and 16-hole 167.016 patterns; and 12.5 mm lag screws with compression screws from 50–115 mm, models 168.050–168.115. The reusable instrumentation comprises six 2.5 × 230 mm threaded guide wires, quick-coupling T-handle, direct measuring device, DHS triple reamer, screw wrench, impactor with spare Teflon tip, two DHS taps, tap and wrench centering sleeves, two insertion coupling screws, two guide shafts, long extraction coupling screw, stylet, DCS triple reamer, DCS angle guide, Excel variable angle guide, and 3.5 mm hexagonal screwdriver. Orthopedic trauma surgeons use this configuration for open reduction and internal fixation of intertrochanteric, selected proximal femoral, distal femoral, and supracondylar fractures, as well as compatible corrective osteotomy and implant removal in hospital operating rooms, trauma centers, and specialist orthopedic facilities.

Coaxial Lag-Screw and Barrel-Plate Mechanism

The system centers preparation on a 2.5 mm threaded guide wire, which establishes the intended femoral axis and retains osseous purchase during fluoroscopic assessment. The direct measuring device passes over the exposed wire to determine the required 12.5 mm lag-screw length. Dedicated DHS and DCS triple reamers create concentric stepped channels for the screw core, plate barrel, and implant junction, preventing separate freehand passes from diverging. The quick-coupling T-handle accepts compatible shafts and transfers manual torque during reaming, tapping, and insertion. Two DHS taps form the cancellous thread path, while the short-profile centering sleeve stabilizes the tap around the guide-wire trajectory. A separate sleeve supports the wrench as the implant advances. The coupling screw engages the lag screw internally and connects to its guide shaft, producing an axial driving assembly; duplicate pairs support the primary insertion workflow. The long coupling screw restores purchase for implant extraction. The impactor seats the barrel plate against the lateral cortex, and its replaceable Teflon contact protects the interface from direct metal impact. The DCS guide establishes the fixed condylar angle, the Excel guide supports planned variable orientation for a compatible construct, the stylet clears cannulated passages, and the 3.5 mm driver engages matching plate-screw recesses.

Hip and Condylar Fixation Sequence

For an intertrochanteric fracture, the surgeon obtains reduction before positioning the selected 135° DHS plate trajectory against the lateral proximal femur. A threaded wire is advanced toward the femoral-head center under anteroposterior and lateral fluoroscopy, followed by direct length measurement. The DHS triple reamer prepares the femoral neck and barrel seat, and the tap forms the planned thread track when required by bone density and the implant technique. The selected 50–115 mm lag screw is inserted through the coupled guide-shaft assembly. A 4-, 5-, 6-, or 8-hole side plate is then passed over the screw shaft, seated with the impactor, and secured along the femoral diaphysis with compatible fixation. For distal femoral or supracondylar reconstruction, the DCS guide establishes the 95° condylar trajectory before length measurement, DCS reaming, lag-screw insertion, and placement of a 6- to 16-hole side plate. Longer plates extend fixation across a greater diaphyseal segment when fracture morphology or osteotomy planning requires additional working length. During removal, plate fasteners are released before the long coupling screw connects to the lag screw for controlled axial extraction. This sequence maintains the guide-wire reference from planning through channel preparation and implant delivery.

Plate Length and Lag-Screw Selection

The 135° DHS family includes four-hole model 166.024, five-hole 166.025, six-hole 166.026, and eight-hole 166.028. These options alter side-plate span along the proximal femoral diaphysis while retaining the same prescribed hip-screw angle. The 95° DCS range extends from six-hole 167.006 through eight-hole 167.008, ten-hole 167.010, twelve-hole 167.012, fourteen-hole 167.014, and sixteen-hole 167.016, allowing progressively longer lateral fixation for distal femoral constructs. Standard 12.5 mm lag screws increase in 5 mm increments from 50 to 115 mm. One unit is supplied at 50, 110, and 115 mm, while two units are included at every length from 55 through 105 mm. Selection is based on direct measurement over the final guide wire rather than an estimated anatomical depth. The DHS triple reamer matches the proximal femoral barrel pathway, whereas the DCS version reproduces the condylar preparation geometry. Centering sleeves are selected by working stage: one maintains tap alignment and the other stabilizes the insertion wrench. The fixed DCS guide controls the prescribed 95° axis, while the Excel variable guide is used only with a construct that permits a surgeon-planned alternative orientation.

Stainless Steel Reprocessing and Inventory Control

German-forged stainless steel provides dimensional stability, corrosion resistance, and torque capacity across plate barrels, lag-screw threads, guide surfaces, cutting flutes, and instrument couplings. The satin instrument finish reduces operating-light reflection and supports inspection for residual soil, pitting, deformation, thread damage, or surface wear. Reusable components are supplied non-sterile and must enter the healthcare facility’s validated cleaning, packaging, and steam-sterilization workflow before first use and after every procedure. Reprocessing includes prompt point-of-use soil control, disassembly of removable connections, brushing of cannulations and threads, cleaning of reamer flutes, thorough rinsing, drying, functional inspection, container organization, packaging, and sterilization under validated parameters. Implant stock requires separate traceability by model, length, quantity, lot, and packaging status. CE marking and manufacture within an ISO 13485 quality management system support conformity documentation, controlled production, corrective action, and supplier qualification. For United States orders, FDA-compliant procurement requires review of applicable establishment, listing, labeling, intended-use, and import documentation for the delivered configuration. Before operating-room release, staff should reconcile all 40 implants, 26 instrument units, and the container against the component tables and remove incomplete, damaged, used, or contaminated items from available inventory.

Specification

How does this set differ from the DHS/DCS Implants & Instruments Set Upgraded?
The DHS/DCS Plate Implant Instruments Set contains a focused inventory of 135° DHS plates, 95° DCS plates, 12.5 mm lag screws, and the instrumentation required to prepare and insert them. The upgraded system adds separate 4.5 mm cortex screws, 6.5 mm cancellous screws, drill bits, combined drill-and-tap sleeves, a depth gauge, countersink, and neutral or loaded drill guide. This combo therefore concentrates on the sliding lag-screw and barrel-plate stage rather than supplying the broader plate-shaft fixation inventory. It provides DHS plate lengths from four to eight holes and DCS lengths from six to sixteen holes. Its lag-screw range extends from 50 to 115 mm, compared with the narrower assortment in the upgraded configuration. Selection depends on whether the hospital requires a focused DHS/DCS implant module or a wider large-fragment fixation inventory.

Which plate and lag-screw sizes are used for each femoral site?
The 135° DHS plates are selected for compatible proximal femoral constructs, including intertrochanteric fixation after reduction and guide-wire planning. Four-, five-, six-, and eight-hole options provide increasing side-plate coverage along the lateral femur. The 95° DCS plates address distal femoral or supracondylar constructs and extend from six to sixteen holes for progressively longer diaphyseal fixation. Lag-screw length is determined with the direct measuring device after the final 2.5 mm wire position has been accepted fluoroscopically. The 50–115 mm series permits measured placement across different femoral-head, neck, and condylar depths. The DHS/DCS Plate Implant Instruments Set should be selected against fracture morphology, bone dimensions, planned plate span, and the compatible implant technique.

What do CE, ISO 13485, and FDA-compliant procurement mean for this set?
CE marking supports the applicable European conformity documentation for the supplied medical-device configuration. ISO 13485 identifies the quality management system used for controlled production, traceability, corrective action, and device records. These credentials support supplier qualification but do not replace a hospital’s own product approval process. For United States purchasing, FDA-compliant procurement requires review of applicable establishment, listing, labeling, intended-use, and import documentation. The DHS/DCS Plate Implant Instruments Set can be supplied with commercial and quality records linked to its SKU and delivered configuration. Procurement teams should retain documentation connecting each implant model, size, quantity, and lot to the received inventory.

How do the quick coupling, sleeves, and insertion mechanism work?
The T-handle quick coupling captures a compatible shaft and releases it for exchange between reaming, tapping, and driving stages. The tap-centering sleeve constrains the DHS tap around the guide-wire axis while the cancellous thread track is formed. The wrench sleeve stabilizes the insertion assembly as the lag screw advances. A coupling screw engages the implant internally, and the guide shaft transfers torque from the handle to that connection. The impactor seats the barrel plate against the lateral cortex, while its Teflon tip cushions the contact interface. Within the DHS/DCS Plate Implant Instruments Set, every coupling must lock fully and rotate concentrically before entering the prepared femoral channel.

How should hospitals sterilize and replenish the implant-instrument inventory?
Receiving staff should reconcile the 40 implants, 26 instrument units, and container against the code-and-quantity tables. Implant models, dimensions, lots, and packaging status should be recorded separately from reusable tools. Sterile processing should clean cannulations, threads, reamer flutes, taps, sleeves, couplings, guide wires, and measuring surfaces before packaging and steam sterilization under the validated facility cycle. Unused implant stock must be controlled according to its labeling and hospital implant policy rather than treated as routine reusable instrumentation. After surgery, reamers, taps, wires, drivers, impactors, and coupling interfaces require inspection for bending, wear, damage, or retained soil. OEM assortment changes, replacement instruments, implant replenishment, and documentation support are available for the DHS/DCS Plate Implant Instruments Set.