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

ABSTRACT

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).

MATERIALS

Product Number

Brand

Product Description

204188

Sigma-Aldrich

Rhenium, powder, 99.995% trace metals basis

267317

Sigma-Aldrich

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

267546

Sigma-Aldrich

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

267511

Sigma-Aldrich

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

267279

Sigma-Aldrich

Rhenium, powder, −100 mesh, ≥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%

GF07491876

Tungsten, foil, 0.2m coil, thickness 0.04mm, coil width 0.7mm, as rolled, 99.95%

GF14172612

Tungsten, wire reel, 0.5m, diameter 0.25mm, clean, 99.95%

GF39616724

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

GF36484229

Tungsten, foil, 0.5m coil, thickness 0.04mm, coil width 0.7mm, as rolled, 99.95%

GF31722263

Tungsten, foil, 0.2m coil, thickness 0.05mm, coil width .51mm, as rolled, 99.95%

GF37107323

Tungsten, rod, 200mm, diameter 10.0mm, centerless ground, 99.95%

GF21637896

Tungsten, insulated wire, 20m, conductor diameter 0.05mm, insulation thickness 0.008mm, polyimide insulation, 99.9%

GF11784449

Tungsten, foil, light tested, 150x150mm, thickness 0.025mm, as rolled, 99.95%

GF13618155

Tungsten, foil, 2m coil, thickness 0.035mm, coil width 1.5mm, as rolled, 99.95%

GF42312305

Tungsten, foil, 2m coil, thickness 0.02mm, coil width .1mm, as rolled, 99.95%

GF43797213

Tungsten, foil, 50x50mm, thickness 0.5mm, as rolled, 99.95%

GF18288838

Tungsten, rod, 100mm, diameter 8.0mm, centerless ground, 99.95%

GF24063342

Tungsten, rod, 500mm, diameter 1.6mm, centerless ground, 99.95%

GF63476365

Tungsten, microfoil, disks, 25mm, thinness 0.05μm, specific density 96μg/cm², permanent mylar 3.5μm support, 99.95%

GF38958250

Tungsten, insulated wire, 2m, conductor diameter 0.075mm, insulation thickness 0.02mm, PTFE (polytetrafluoroethylene) insulation, 99.9%

GF28186072

Tungsten, foil, light tested, 150x150mm, thickness 0.05mm, as rolled, 99.95%

GF42014078

Tungsten, foil, 2m coil, thickness 0.6mm, coil width 1mm, as rolled, 99.95%

GF53840099

Tungsten, foil, 0.2m coil, thickness 0.10mm, coil width .9mm, as rolled, 99.95%

GF22261823

Tungsten, foil, not light tested, 50x50mm, thickness 0.005mm, 99.95%

GF53111663

Tungsten, insulated wire, 1m, conductor diameter 0.075mm, insulation thickness 0.02mm, PTFE (polytetrafluoroethylene) insulation, 99.9%

GF52385799

Tungsten, insulated wire, 1m, conductor diameter 0.015mm, insulation thickness 0.002mm, polyimide insulation, 99.9%

GF28612302

Tungsten, foil, 2m coil, thickness 0.02mm, coil width .5mm, as rolled, 99.95%

GF41314092

Tungsten, foil, light tested, 50x50mm, thickness 0.075mm, as rolled, 99.95%

GF13027384

Tungsten, foil, 150x150mm, thickness 1.0mm, as rolled, 99.95%