Optimal needle design for minimal insertion force and bevel length

Wang, Yancheng; Chen, Roland; Tai, Bruce L.; McLaughlin, Patrick W.; Shih, Albert J.

doi:10.1016/j.medengphy.2014.05.013

Cited by 31 publications

(37 citation statements)

References 15 publications

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“…For the baseline NLP, a commercial lancet needle (Becton-Dickinson) is selected. By using the reverse engineering method [7], the baseline lancet needle, with ξ 15°, ϕ 20°, and β 60°, is also ground. Figure 4 shows the final fabricated results of FLN-B, FLN-F, and regular NLP needles.…”

Section: Fln-b and Fln-f Needles Fabricationmentioning

confidence: 99%

“…Mathematical models to quantify the needle cutting edge inclination (λ) and rake (α) angles have been developed, and results demonstrated that two lancets at the needle tip can increase the λ and lower the needle insertion force [4]. Based on the model to estimate the initial peak needle insertion force [5,6], optimal lancet needle geometry can be achieved, which has large lancets on the tip and could reduce the needle insertion force by 14% [7]. Along the needle tip cutting edge, two parameters, the λ and α, have demonstrated to be critical for the needle insertion force [5,8].…”

Section: Introductionmentioning

confidence: 99%

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Five-plane lancet needle design for soft PVC phantom tissue cutting

Wang

Mei

2018

Bio-des. Manuf.

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Lancet needle, having three planes at the tip to generate a sharp lancet point, is the most common needle tip geometry and used for medical procedures. This research presents two five-plane lancet needle designs, the five-plane lancet needle with two back bevels (FLN-B) and five-plane lancet needle with two front bevels (FLN-F), to study the effects of two additional bevel planes on the reduction of soft tissue cutting force. Mathematical models to calculate the inclination angle and rake angle along the cutting edges of FLN-B and FLN-F are developed. By using the grinding process, the prototype FLN-B and FLN-F needles are fabricated. And their inclination and rake angles along the cutting edges are investigated and compared to that of regular lancet needle. Needles insertion tests were conducted on soft PVC phantom which mimics the soft tissue. The initial peak insertion force and steady-state cutting force during needle insertion were identified, and the effect of cutting edge on needle soft tissue cutting force was studied. Compared to lancet needle, FLN-B and FLN-F both have higher inclination and rake angles at the tip cutting edge, could reduce the initial peak needle insertion force and tissue cutting forces, and thus can efficiently cut the soft tissue for medical applications.

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Section: Fln-b and Fln-f Needles Fabricationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Five-plane lancet needle design for soft PVC phantom tissue cutting

Wang

Mei

2018

Bio-des. Manuf.

Self Cite

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“…The rake and inclination angle are two key parameters that define the geometry and orientation of the cutting edge [53] and can also affect the needle insertion force [54]. Using a mathematical model to predict the needle insertion force [55], an optimization algorithm can be applied to vary the parameters that define the tip geometry of a needle. Results demonstrate that needles with a large bevel surface have the lowest insertion force [55].…”

Section: Tissue Acquistionmentioning

confidence: 99%

Image-Guided Biopsy in the Era of Personalized Cancer Care: Proceedings from the Society of Interventional Radiology Research Consensus Panel

Tam

Lim

Wistuba

et al. 2016

Journal of Vascular and Interventional Radiology

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“…In Figure 2, which presents the setup of the experiment for measuring the acceleration measurement of the lancing device, hop (1) clamps a lancing device (2), and an accelerometer (3) is used to measure the acceleration of the lancet immediately after it strikes the lancing device. The acceleration and velocity data are transmitted to an acquisition device (4), which is connected to a computer (5). Subsequent analysis is performed using Pico Scope 6 (2013, PICO Technology, Eaton Socon, England) and Matlab software packages (Version 7, The MathWorks, Natick, MA, USA, 2014).…”

Section: Lancing Device Principlementioning

confidence: 99%

“…(1) Change the shape and bevel angle of the lancet tip to reduce the size of the wound that is produced by piercing [5,6]. (2) Coat the lancet surface with a special material to reduce the friction between the skin and the lancet and thereby to reduce pain [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Clinical Trial of an Innovative High-Speed Lancing Device

Chang

Yeh

Lee³

et al. 2016

Applied Sciences

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An innovative high-speed lancing device has a lancet that moves so fast that it is not affected at all by the vibration of its spring, and does not pierce the skin repeatedly, greatly reducing the pain that is caused to diabetes mellitus (DM) patients during blood sampling. As revealed by experimental measurements of the acceleration of a lancet using an accelerometer, the lancet pierces the skin only once. The maximum acceleration and the instant piercing velocity of the lancet are 9.4 times and 1.78 times those of a conventional lancing device, respectively. Meanwhile, the period for which the lancet remains in the skin is 0.014 s shorter than that of the conventional lancing device. A clinical trial that involved 100 participants yielded statistical results concerning the numeric rating of pain scale (NRS) of pain intensity, which is internationally recognized as the pain with the highest validity, that showed that the NRS of participants who used the innovative high-speed lancing device was 2.65 less than that of those who used the conventional lancing device, and the duration of the pain after blood sampling was 76.1 min shorter.

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Optimal needle design for minimal insertion force and bevel length

Cited by 31 publications

References 15 publications

Five-plane lancet needle design for soft PVC phantom tissue cutting

Five-plane lancet needle design for soft PVC phantom tissue cutting

Image-Guided Biopsy in the Era of Personalized Cancer Care: Proceedings from the Society of Interventional Radiology Research Consensus Panel

Characterization and Clinical Trial of an Innovative High-Speed Lancing Device

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