Lubrication performance of diamond-like carbon and fluorinated diamond-like carbon coatings for intravascular guidewires

Hasebe, Terumitsu; Matsuoka, Yoshiaki; Kodama, Hideyuki; Saito, Toshiya; Yohena, Satoshi; Kamijo, Aki; Shiraga, Nobuyuki; Higuchi, Mutsumi; Kuribayashi, Sachio; Takahashi, Koki; Suzuki, Tetsuya

doi:10.1016/j.diamond.2005.08.025

Cited by 43 publications

(29 citation statements)

References 19 publications

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“…As an application, DLC or fluorinated DLC coating produced significant lubrication improvement (by approximately 30%) in intravascular guidewires. 8 On fluorine-and aluminum-doped DLC coatings, over surface topographies generated by laser-structuring and electroplating, Schulz et al 9 obtained WCAs greater than 150 deg (static superhydrophobicity; hysteresis was not reported). Ostrovskaya et al 10 Recently, Wang et al 13 produced DLC films with WCAs up to 160 deg.…”

Section: Introductionmentioning

confidence: 99%

Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films

et al. 2013

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Abstract. A self-assembled polytetrafluoroethylene (PTFE) nanostructure is deposited on microcrystalline diamond (MCD) films, by use of physical and chemical vapor deposition in a two-step process, to produce (fully) superhydrophobic surfaces: high water contact angle (static, 165 AE 2 deg), very low hysteresis (dynamic, ∼4 deg), and associated sliding angle (1 deg 5 0 AE 15 0 ), thus combining the diamond infrared transparency and self-cleaning properties. These are interpreted in light of Wenzel and Cassie-Baxter wetting models, associated with structural microscopy of nano-micro rough PTFE/MCD surfaces, and present a promising perspective for self-cleaning infrared optics applications.

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Section: Introductionmentioning

confidence: 99%

Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films

et al. 2013

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“…When used in guidewire applications, a highly lubricous surface is desirable to reduce damage to vessel walls during insertion and removal [2], and to aid in accurate positioning by minimising the force required to advance, retract or rotate the wire [3]. The most common method for conferring a lubricous surface is to coat the wire with a hydrophobic polymer.…”

Section: Introductionmentioning

confidence: 99%

Blast Coating of Superelastic NiTi Wire with PTFE to Enhance Wear Properties

Dunne

Roche

Twomey

et al. 2015

Shap. Mem. Superelasticity

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This work investigates the deposition of polytetrafluoroethylene (PTFE) onto a superelastic NiTi wire using an ambient temperature-coating technique known as CoBlast. The process utilises a stream of abrasive (Al 2 O 3 ) and a coating medium (PTFE) sprayed simultaneously at the surface of the substrate. Superelastic NiTi wire is used in guidewire applications, and PTFE coatings are commonly applied to reduce damage to vessel walls during insertion and removal, and to aid in accurate positioning by minimising the force required to advance, retract or rotate the wire. The CoBlast coated wires were compared to wire treated with PTFE only. The coated samples were examined using variety of techniques: X-ray diffraction (XRD), microscopy, surface roughness, wear testing and flexural tests. The CoBlast coated samples had an adherent coating with a significant resistance to wear compared to the samples coated with PTFE only. The XRD revealed that the process gave rise to a stress-induced martensite phase in the NiTi which may enhance mechanical properties. The study indicates that the CoBlast process can be used to deposit thin adherent coatings of PTFE onto the surface of superelastic NiTi.

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“…Hence, DLC film is widely applied in mechanical engineering, electronic engineering, military equipment, aerospace, and biomedicine [1][2][3][4][5]. Fluorinated diamond-like carbon (FDLC) film is modified materials that are based on the DLC film.…”

Section: Introductionmentioning

confidence: 99%

Effect of TiN/C Microstructure Composite Layer on the Adhesion of FDLC Film onto Silicon Substrate

Xiao

Gong

et al. 2018

Coatings

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Deposition techniques of direct current and radio-frequency magnetron sputtering were used to separately prepare TiN/C microstructural composite layer and fluorinated diamond-like carbon (FDLC) film on monocrystalline silicon. The aim was to investigate the effects of microstructural composite layers on the adhesion property of FDLC film. The results indicated that the TiN/C microstructural composite layer can distinguish from the substrate and the FDLC film. After adding the composite layers, the film-substrate binding force significantly increased. When the composite film were prepared at a partial pressure of 0.25, the binding force reached 30.5 N, which was greater than the value of 22.6 N for the sample without composite layers. TiN/C in the composite layers intensified the integration with silicon substrate because the C-C bond acted as a bridge linking the FDLC film to the silicon substrate. Furthermore, the bulges on the surface of the composite layers strengthened the physical bonding of the film with silicon substrates.

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Lubrication performance of diamond-like carbon and fluorinated diamond-like carbon coatings for intravascular guidewires

Cited by 43 publications

References 19 publications

Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films

Nano-microstructured, superhydrophobic, and infrared transparent polytetrafluoroethylene/diamond films

Blast Coating of Superelastic NiTi Wire with PTFE to Enhance Wear Properties

Effect of TiN/C Microstructure Composite Layer on the Adhesion of FDLC Film onto Silicon Substrate

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