Design and Development of Biomedical and Surgical Instruments in Biomedical Applications

Li, Jeremy

doi:10.5772/48462

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Understanding the mechanics behind crack nucleation is not only crucial to advance the current scientific knowledge on soft materials fracture but also is relevant to numerous health care applications such as percutaneous needle insertion (biopsies, blood sampling, and anesthesia), 6 robot-assisted surgeries, 7,8 and design of advanced surgical instruments. 9,10 One approach for studying crack nucleation (or fracture initiation) in soft solids is through understanding the forces and the energy involved in the process of puncturing a soft polymer gel with sharp indenters. 8,11−15 Previous studies on puncture of soft gels have primarily focused on understanding the mechanics of deep indentation to the point of puncture.…”

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confidence: 99%

Effect of Polymer Volume Fraction on Fracture Initiation in Soft Gels at Small Length Scales

Rattan

Crosby

2019

ACS Macro Lett.

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The influence of polymer volume fraction, ϕ v on fracture initiation via puncture is studied in self-assembled triblock copolymer gels. Spherically tipped indenters of radii varying over a wide range were used to characterize puncture at length scales on the same order of magnitude as the elasto-capillary length (∼μm) and significantly below the elasto-fracture length (∼mm) for ϕ v = 0.12−0.53. Critical energy release rate, G c for ϕ v = 0.12−0.30 was found to be in agreement with the predicted scaling from the classical Lake-Thomas model modified for gel fracture via the failure mechanism of chain pull-out and plastic yielding of micelles (G c ∼ ϕ v 2.2). Interestingly, we demonstrate that fracture initiation energy, Γ o , from puncture scales as Γ o ∼ ϕ v , thus, indicating the role played by different fundamental mechanisms governing fracture initiation in soft gels. Additionally, gels with ϕ v = 0.53 show deviation from experimental scalings for G c and Γ o , likely due to a change in micellar morphology leading to anomalous fracture behavior.

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confidence: 99%

Effect of Polymer Volume Fraction on Fracture Initiation in Soft Gels at Small Length Scales

Rattan

Crosby

2019

ACS Macro Lett.

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“…To raise the standard of biomedical care, researchers are looking into minimally invasive medical and surgical instruments. [22] A subsequent study revealed that 390 questionnaires have been distributed to surgeons within the Spanish Health System. Also, the questionnaires have been categorized into four areas: dissector assessment, demographics, additional information, and needle holder assessment.…”

Section: Methodsmentioning

confidence: 99%

Systematic Review of Recent Developments Related to Microergonomics of Surgical Instruments

Abed,

Hamandi,

Faraj

2024

NJES

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Researches are now being conducted on redesign as well as micro ergonomic interventions. Most micro-surgical tool designs concentrate on the manipulation of targeted tissue instead of the surgeon's hand, and this presents a new research opportunity for better fitting the equipment to the surgeon's hand. So the objective is to examine the advancements made in the last few years and provide a framework for ergonomic intervention framework regarding manufacturing systems. With the use of words like ergonomic design, intervention, and evaluation," the titles and abstracts of ergonomics publications were filtered to find relevant research. The paper describes the way that the concept of micro-ergonomics can enhance the design of the micro-instruments. Finally, an application of a new surgical instrument is stated as a pen needle holder designed by SOLIDWORK 22 which creating a wide range of possible uses for futuristic technology. In future, neurosurgical equipment design will incorporate concepts from surgical tool design together with penization, microergonomics, and electronics.

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“…Instrument development has been shown to contribute to the healthcare system by offering improvements in surgical times and cost-efficiency. 1 The emergence of minimally invasive laparoscopic surgery is one of the greatest of such. Laparoscopic procedures have been noted to have numerous advantages over traditional open surgery for both patients and surgeons.…”

Section: Introductionmentioning

confidence: 99%

Assessment of an Articulating Laparoscopic Needle Holder (FlexDex™) Compared to a Conventional Rigid Needle Holder in 2-Dimension Vision Amongst Novices: A Randomised Controlled Study

Motahariasl¹,

Farzaneh²,

Motahariasl³

et al. 2022

MDER

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Design and Development of Biomedical and Surgical Instruments in Biomedical Applications

Cited by 5 publications

References 11 publications

Effect of Polymer Volume Fraction on Fracture Initiation in Soft Gels at Small Length Scales

Effect of Polymer Volume Fraction on Fracture Initiation in Soft Gels at Small Length Scales

Systematic Review of Recent Developments Related to Microergonomics of Surgical Instruments

Assessment of an Articulating Laparoscopic Needle Holder (FlexDex™) Compared to a Conventional Rigid Needle Holder in 2-Dimension Vision Amongst Novices: A Randomised Controlled Study

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