Thursday, November 28, 2013

Metal wires staples and ligatures


Metallic Wire
Suture wire is prepared mainly from three metals - nontoxic stainless steel, the alloy tantalum and silver.
         All these may be obtained as a single-strand monofilament suture and the first-two as several strands, either twisted or braided, known as multifilament wire.
         Surgical stainless steel suture wire is used mainly in orthopedics and thoracic surgery. A stouter wire of sizes 3 to 9 (0 to 7) or 29 SWG would be needed for wiring fragments of bone together.
Metal Clips (Ligature)
Ligatures of flattened silver or tantalum wire are used in neurosurgery and chest surgery for arresting hemorrhage from small vessels. The insertion forceps and cartridges allow their use for this purpose at depths with safety.
Metal Clips (Suture)
These are metal clips having two sharp points which when the clip is closed, these points grip the edges of the skin incision and hold them in apposition.
         The original types in use are Michel and Kifa .
Staples
During the past few years there has been considerable development in the field of suture staples.
         These range from disposable magazines of staples which fit an insertion instrument to completely disposable units. Examples of two of the latter are Proximate II (Ethicon) and Appose (Davis and Geck) 
Adhesive skin closures
Steristrip skin closures are sterile strips of Micropore surgical tape, reinforced with polyester filaments, either plain or impregnated with an iodophor, and precut to specific sizes.
         Suture strip is an elastic skin closure strip made to appose skin edges.
nonwoven polyester backing coated with an adhesive 

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