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

267317

Sigma-Aldrich

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

GF75550866

Tungsten, foil, 0.2m coil, thickness 0.025mm, coil width 1mm, as rolled, 99.95%

510106

Sigma-Aldrich

Tungsten, powder (monocrystalline), 0.6-1 μm, ≥99.9% trace metals basis

267546

Sigma-Aldrich

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

204188

Sigma-Aldrich

Rhenium, powder, 99.995% trace metals basis

267511

Sigma-Aldrich

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

GF87677915

Tungsten, foil, 1m coil, thickness 0.08mm, coil width .9mm, as rolled, 99.95%

GF78315419

Tungsten, foil, 0.5m coil, thickness 0.10mm, coil width .9mm, as rolled, 99.95%

GF91197748

Tungsten, foil, 1m coil, thickness 0.1mm, coil width .6mm, as rolled, 99.95%

GF00541167

Rhenium, wire reel, 1m, diameter 0.2mm, annealed, 99.97%

GF13770491

Tungsten, rod, 50mm, diameter 16mm, centerless ground, 99.95%

GF25095854

Tungsten, rod, 200mm, diameter 5.0mm, centerless ground, 99.95%

GF18728961

Tungsten, microfoil, disks, 25mm, thinness 0.1μm, specific density 182μg/cm², permanent mylar 3.5μm support, 99.95%

GF14696859

Tungsten, rod, 100mm, diameter 10.0mm, centerless ground, 99.95%

GF22953012

Tungsten, wire reel, 10m, diameter 0.004mm, hard, clean, 99.95%

GF18063783

Tungsten, microfoil, disks, 10mm, thinness 0.25μm, specific density 474μg/cm², permanent mylar 3.5μm support, 99.95%

GF52817878

Tungsten, foil, 30mm disks, thickness 1.0mm, as rolled, 99.95%

GF10563342

Tungsten, foil, not light tested, 50x50mm, thickness 0.007mm, 99.95%

GF12679106

Tungsten, foil, light tested, 25x25mm, thickness 0.015mm, 99.95%

GF37265429

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

GF59032481

Tungsten, insulated wire, 5m, conductor diameter 0.0125mm, insulation thickness 0.0035mm, polyimide insulation, 99.9%

GF17364191

Tungsten, foil, 2m coil, thickness 0.08mm, coil width .9mm, as rolled, 99.95%

GF07918230

Tungsten, rod, 1000mm, diameter 1.6mm, centerless ground, 99.95%

GF27705281

Tungsten, wire reel, 25m, diameter 0.02mm, gold plated, 99.95%

GF49127014

Tungsten, insulated wire, 20m, conductor diameter 0.075mm, insulation thickness 0.02mm, PTFE (polytetrafluoroethylene) insulation, 99.9%

GF66018999

Tungsten, foil, 2m coil, thickness 0.04mm, coil width 0.7mm, as rolled, 99.95%

GF02220567

Tungsten, foil, 0.5m coil, thickness 0.1mm, coil width 1.5mm, as rolled, 99.95%

GF27648007

Tungsten, wire reel, 1000m, diameter 0.035mm, clean, 99.95%

GF21160178

Tungsten, foil, light tested, 25x25mm, thickness 0.01mm, 99.95%

GF06473033

Tungsten, foil, 0.2m coil, thickness 0.05mm, coil width 1.5mm, as rolled, 99.95%