Ethicon | Surgical Stainless Steel Suture | Metallic Non-Absorbable | Model M657G | Sternal Closure Multi-Pack

The Ethicon M657G is a highly specialized, ultra-high-tensile, sterile, non-absorbable surgical suture manufactured from high-quality 316L stainless steel. Formulated as a true metallic monofilament strand, this material delivers the highest structural strength, lowest tissue reactivity, and greatest resistance to mechanical fatigue of any surgical wound-closure medium available. Because it is completely inert chemically and biologically, it is entirely unaffected by active in vivo enzymatic digestion, chemical hydrolysis, or infection-induced degradation, providing permanent and rigid structural fixation across heavy osseous or deep fascial planes.

Engineered explicitly for high-stakes cardiothoracic and orthopedic interventions, this configuration features a heavy size 5 thickness profile (Metric 7.0). The M657G is supplied as a multi-pack system containing 4 distinct 30-inch (75 cm) pre-cut metallic strands per sterile sleeve. Each heavy monofilament wire comes pre-swaged to a robust 48 mm CCS (Conventional Cutting Sternal) needle. This heavy-gauge needle is specifically engineered with an reinforced, ultra-sharp triangular cutting apex to punch through rigid bony structures—such as the sternum or ribs—without bending, dulling, or micro-fragmenting the metal swage connection.

Technical Specifications

• Manufacturer: Ethicon (Johnson and Johnson Medical Division)

• Product Brand Family: Surgical Stainless Steel Suture Portfolio (Sternal Closure Matrix)

• Product Catalog Code (MPN): M657G

• Suture Material Composition: 316L Stainless Steel (Low-carbon metallic alloy)

• Strand Structural Construction: Monofilament (Smooth solid wire profile, zero capillary risk)

• Thread Sizing Profile: Size 5 Suture (Heavy-duty / Bony Fixation Grade USP 5 Gauge / Metric 7.0)

• Multi-Strand Pack Profile: 4 Strands per individual sterile sleeve (4 x 30 inches / 75 cm lengths)

• Color Pigment Profile: Metallic Silver (Uncoated, natural high-luster steel finish)

• Needle Type Classification: CCS Conventional Cutting Sternal (Heavy-duty bone-piercing point)

• Needle Curvature Geometry: 1/2 Circle curvature tracking radius

• Needle Length Profile: 48 mm heavy-gauge structural length

• Packaging Matrix Configuration: Standard box containing 12 sterile multi-strand suture units (12 Sleeves per box, totaling 48 individual wire strands and needles)

• Absorption Profile Cycle: Strictly Non-Absorbable (Provides permanent structural skeletal immobilization with zero degradation over time)