CN

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

摘要

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).

材料

货号

品牌

产品描述

Sigma-Aldrich

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

Sigma-Aldrich

钨, powder, 10 μm, ≥99.99% trace metals basis

Sigma-Aldrich

铼, powder, 99.995% trace metals basis

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

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

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

钨, wire reel, 5m, diameter 1.0mm, clean, 99.95%

Sigma-Aldrich

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

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

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

钨, wire, straight, 300mm, diameter 0.38mm, 99.9+%

钨, lump, 200g, max. size 5mm

钨, wire reel, 100m, diameter 0.02mm, gold plated, 99.95%

钨, wire reel, 100m, diameter 0.2mm, clean, 99.95%

钨, wire reel, 5m, diameter 0.125mm, clean, 99.95%

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

钨, wire reel, 100m, diameter 0.025mm, gold plated, 99.95%

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

钨, wire reel, 5m, diameter 0.005mm, gold plated, 99.95%

钨, lump, 100g, max. size 5mm

钨, mesh, 100x100mm, nominal aperture 0.15mm, wire diameter 0.02mm, 150 wires/inch, open area 75%, plain weave mesh, 99.95%

钨, wire reel, 25m, diameter 0.05mm, clean, 99.95%

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

钨, wire reel, 100m, diameter 0.38mm, clean, 99.95%

钨, wire reel, 10m, diameter 0.025mm, gold plated, 99.95%