Grinding the sharp tip in thin NiTi and stainless steel wires

Wang, Yancheng; Tai, Bruce L.; Loon, Mackenzie Van; Shih, Albert J.

doi:10.1016/j.ijmachtools.2012.05.009

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…During the fabrication of millineedles, the process parameters also affect the needle quality. For example, Wang et al [139] used cubic boron nitride (CBN) and silicon carbide (SiC) wheels to grind a 15° bevel angle tip on thin nickel titanium and stainless steel wires respectively. The results show that cubic boron nitride grinding has a lower grinding force and smaller wire deflection than that of the silicon carbide.…”

Section: Fabrication Of Millineedlesmentioning

confidence: 99%

A Review of Nano/Micro/Milli Needles Fabrications for Biomedical Engineering

Liu

Zheng

et al. 2022

Chin. J. Mech. Eng.

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Needles, as some of the most widely used medical devices, have been effectively applied in human disease prevention, diagnosis, treatment, and rehabilitation. Thin 1D needle can easily penetrate cells/organs by generating highly localized stress with their sharp tips to achieve bioliquid sampling, biosensing, drug delivery, surgery, and other such applications. In this review, we provide an overview of multiscale needle fabrication techniques and their biomedical applications. Needles are classified as nanoneedles, microneedles and millineedles based on the needle diameter, and their fabrication techniques are highlighted. Nanoneedles bridge the inside and outside of cells, achieving intracellular electrical recording, biochemical sensing, and drug delivery. Microneedles penetrate the stratum corneum layer to detect biomarkers/bioelectricity in interstitial fluid and deliver drugs through the skin into the human circulatory system. Millineedles, including puncture, syringe, acupuncture and suture needles, are presented. Finally, conclusions and future perspectives for next-generation nano/micro/milli needles are discussed.

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Section: Fabrication Of Millineedlesmentioning

confidence: 99%

A Review of Nano/Micro/Milli Needles Fabrications for Biomedical Engineering

Liu

Zheng

et al. 2022

Chin. J. Mech. Eng.

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“…3. In step 1, the tip of the guidewire with three symmetric planes of either a bevel angle of 5 deg or 10 deg is sharpened by surface grinding using the setup and procedure presented by Wang et al [18], In step 2, the guidewire is curved into an aluminum die with a circular groove machined to hold the guidewire for heat treatment (0.5 h at 550°C, then oilquenched to room temperature). After heat treatment, the guidewire maintains its curved shape.…”

Section: Precurvedmentioning

confidence: 99%

Study of Insertion Force and Deformation for Suturing With Precurved NiTi Guidewire

Wang

Chen

Tai

et al. 2015

Journal of Biomechanical Engineering

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This research presents an experimental study evaluating stomach suturing using a precurved nickel-titanium (NiTi) guidewire for an endoscopic minimally invasive obesity treatment. Precise path planning is critical for accurate and effective suturing. A position measurement system utilizing a hand-held magnetic sensor was used to measure the shape of a precurved guidewire and to determine the radius of curvature before and after suturing. Ex vivo stomach suturing experiments using four different guidewire tip designs varying the radius of curvature and bevel angles were conducted. The changes in radius of curvature and suturing force during suturing were measured. A model was developed to predict the guidewire radius of curvature based on the measured suturing force. Results show that a small bevel angle and a large radius of curvature reduce the suturing force and the combination of small bevel angle and small radius of curvature can maintain the shape of guidewire for accurate suturing.

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“…The cubic boron nitride (cBN) tool is demonstrated to be beneficial for stainless steels grinding due to lower grinding forces and deflection [3]. The cBN tool is composed of cBN and matrix.…”

Section: Introductionmentioning

confidence: 99%

Influence of Sn and Bi Additions on the Structures and Wear Properties of Cu–Sn–P–Ce cBN Tools

Han

Jin

et al. 2018

J. Superhard Mater.

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Influence of Sn and Bi additions on the structures and wear properties of Cu-Sn-P-Ce cBN toolsIn this work Sn and Bi were added to Cu-Sn-P-Ce for improving its microstructures and properties. Structures of the three matrices were investigated by XRD, SEM and EDS. The Cu 41 Sn 11 became the main microstructure with some pores, the grinding ratio increased, and the grinding efficiency improved slightly with the addition of Sn to Cu-Sn-P-Ce. Bi was distributed in the form of simple substance, the grinding ratio increased, and the grinding efficiency greatly reduced with the addition of Bi to Cu-Sn-P-Ce.

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Grinding the sharp tip in thin NiTi and stainless steel wires

Cited by 6 publications

References 20 publications

A Review of Nano/Micro/Milli Needles Fabrications for Biomedical Engineering

A Review of Nano/Micro/Milli Needles Fabrications for Biomedical Engineering

Study of Insertion Force and Deformation for Suturing With Precurved NiTi Guidewire

Influence of Sn and Bi Additions on the Structures and Wear Properties of Cu–Sn–P–Ce cBN Tools

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