Investigation of Insertion Phenomena with Needles Treated by Plasma Etching

Alghurair, Omar; Remnev, Alexey; Nagato, Keisuke; Ikeshima, Shota; Ono, Yasunori; Uemura, Kensuke; Nakao, Masayuki

doi:10.1016/j.procir.2013.01.010

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Previously we have proposed a method of ion plasma sharpening (IPS) of medical needles, where the needles were placed in a volume type discharge plasma and ions were accelerated towards the needles by means of pulsating negative bias [19]. The ion sputtering process during IPS resulted in pronounced tip geometry modification and overall sharpening, with reduced IF and less artificial skin deflection during the injection.…”

Section: Introductionmentioning

confidence: 99%

Effect of working gas composition in medical needle sharpening by ion beam sputtering

Remnev

Nagato

Uemura

2018

Biomed. Phys. Eng. Express

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The sharpness of cutting edges and apexes is crucial in the performance of various medical devices. A method of medical needle finishing, consisting of large area ion beam sputtering, is introduced and studied. Significant deburring, edge sharpening and surface modification of the needles is demonstrated by an experiment. The influences of working gas composition and total ion fluence on the resulting needle properties are emphasized. It was shown that the utilization of an Ar/dry air mixture (37/6) resulted in a significant improvement in surface morphology, compared to pure Ar sputtering. The effect of gas composition is discussed in terms of concurrent material sputtering and chemisorption of reactive species. Needle sharpening aspects studied using microscopy techniques were confirmed by measuring the force required to push a needle through a plastic film. The puncture force of an as-grinded needle was reduced by ∼50% by means of the reported method.

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Section: Introductionmentioning

confidence: 99%

Effect of working gas composition in medical needle sharpening by ion beam sputtering

Remnev

Nagato

Uemura

2018

Biomed. Phys. Eng. Express

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show abstract

“…Ion sputtering of the constructional alloys, particularly stainless steel, is used for surface activation, cleaning and sharpening application, such as in the case of medical needles finishing [12], where surface roughness of the sputtered object is critical.…”

Section: Introductionmentioning

confidence: 99%