Tungsten-rhenium suture needles with improved properties for coronary artery bypass graft surgery.

Tungsten-rhenium suture needles with improved properties for coronary artery bypass graft surgery.

Journal of biomedical materials research. Part B, Applied biomaterials (2010-06-25)

Frank R Cichocki, Robert E Maurer, S Neil Bar

PMID20574974

RESUMEN

Suture needles are essential instruments for performing blood vessel anastomosis in coronary artery bypass graft (CABG) surgeries. Exceptional needle performance is needed now as never before because of the increasing prevalence of elderly patients with advanced stages of coronary disease and calcified tissue. The various properties that affect the performance of suture needles used in CABG surgery are reviewed and recent progress towards improving needle performance through the use of tungsten-rhenium alloys and novel lubricous needle coatings is presented. Substantial enhancement of properties beyond those exhibited by commercially available stainless steel suture needles has been made, including an approximate 40% increase in strength, 100% increase in stiffness, and superior multiple pass penetration performance in both synthetic rubber media and human cadaver carotid arteries (p < 0.01).

MATERIALES

Número de producto

Marca

Descripción del producto

267511

Sigma-Aldrich

Tungsten, powder, 12 μm, 99.9% trace metals basis

357421

Sigma-Aldrich

Tungsten, powder, ≤10 μm, ≥99.99% trace metals basis

204188

Sigma-Aldrich

Rhenium, powder, 99.995% trace metals basis

267562

Sigma-Aldrich

Tungsten, wire, diam. 1.0 mm, 99.99% trace metals basis

267554

Sigma-Aldrich

Tungsten, wire, diam. 0.25 mm, ≥99.9% trace metals basis

267317

Sigma-Aldrich

Rhenium, foil, thickness 0.25 mm, 99.98% trace metals basis

267279

Sigma-Aldrich

Rhenium, powder, −100 mesh, ≥99.9% trace metals basis

267546

Sigma-Aldrich

Tungsten, foil, thickness 0.25 mm, ≥99.9% trace metals basis

GF37265429

Tungsten, foil, 150x150mm, thickness 0.15mm, as rolled, 99.95%

356972

Sigma-Aldrich

Tungsten, wire, diam. 0.5 mm, ≥99.9% trace metals basis

GF27394702

Tungsten, mesh, 100x100mm, nominal aperture 0.2mm, wire diameter 0.05mm, 100 wires/inch, open area 64%, plain weave mesh, 99.95%

357189

Sigma-Aldrich

Tungsten, foil, thickness 0.5 mm, ≥99.9% trace metals basis

GF17950372

Tungsten, foil, 200x200mm, thickness 0.3mm, as rolled, 99.95%

GF07154939

Tungsten, lump, 100g, max. size 5mm

GF72872781

Tungsten, foil, 50x50mm, thickness 0.15mm, as rolled, 99.95%

GF80179410

Tungsten, mesh, 50x50mm, nominal aperture 0.15mm, wire diameter 0.02mm, 150 wires/inch, open area 75%, plain weave mesh, 99.95%

357197

Sigma-Aldrich

Tungsten, foil, thickness 0.127 mm, ≥99.9% trace metals basis

GF73409823

Tungsten, wire, straight, 500mm, diameter 0.38mm, 99.9+%

GF21631250

Tungsten, lump, 200g, max. size 5mm

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Tungsten, mesh, 50x50mm, nominal aperture 0.2mm, wire diameter 0.05mm, 100 wires/inch, open area 64%, plain weave mesh, 99.95%

GF04286202

Tungsten, wire reel, 100m, diameter 0.025mm, clean, 99.95%

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Tungsten, wire reel, 100m, diameter 0.01mm, hard, 99.95%

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Tungsten, rod, 100mm, diameter 2.0mm, centerless ground, 99.95%

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Tungsten, wire, straight, 100mm, diameter 0.25mm, 99.9+%

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Tungsten, wire reel, 25m, diameter 0.25mm, clean, 99.95%

GF43142969

Tungsten, foil, light tested, 25x25mm, thickness 0.025mm, as rolled, 99.95%

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Tungsten, rod, 25mm, diameter 20.0mm, centerless ground, 99.95%

GF41112076

Tungsten, wire, straight, 100mm, diameter 0.5mm, 99.9+%

GF49624757

Tungsten, rod, 100mm, diameter 4.0mm, centerless ground, 99.95%

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Tungsten, wire reel, 25m, diameter 0.015mm, gold plated, 99.95%