Virtual Scissors in a Thin Haptic and Force Feedback Environment

Funahashi, Kenji; Kubotani, Daisuke; Iwahori, Yuji; Tanida, Koji

doi:10.20965/jaciii.2009.p0283

Cited by 2 publications

(5 citation statements)

References 3 publications

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“…Funahashi et al reported that vibration and sound feedback in scissors used in VR environments are effective in providing a sense of reality [ 5 ]. Okamura et al, in a study that modeled VR scissors with tactile feedback in terms of friction, motion, and physical properties, showed that users could feel the cutting force as if the model were actual scissors, even if the cutting force was not very precise [ 6 ].…”

Section: Discussionmentioning

confidence: 99%

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A Low Mean Closing Load and a Decrease in Load Change at the Tip Increase the Comfort of Scissors

Ota,

Kaneda,

Maeda

et al. 2024

Cureus

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Introduction During surgery, surgeons intuitively recognize when they are using dull scissors and find them difficult to use. The purpose of this study was to objectively evaluate the physical characteristics of scissors and the comfort reported by surgeons to develop objective quality control standards for scissors used in surgery. Methods Sensory and measurement tests were conducted to evaluate the comfort and physical characteristics of ten pairs of Cooper scissors. As a sensory test, thirty-one volunteer surgeons opened and closed the scissors and selected three that felt comfortable and three that were uncomfortable. The results were scored. For measurement, a load was applied to the handle of the scissors. The load pressure and displacement of the width between each handle when the scissors were closed were measured. Results A strong negative correlation was found between the total comfort score and the mean load value between sensory and measurement tests (r=-0.717, p=0.0195). The correlation between the total score and the change in load at the tip showed a moderate negative correlation (r=-0.687, p=0.0282). Multiple regression analysis showed that the change in load at the tip was an independent factor affecting the total score. Conclusions Surgeons consider scissors with a low mean load required to close the scissors and a small change in load at the tip to be comfortable. The mean load on scissors and the change in load at the tip should be considered in the development of quality control standards for scissors used in surgery.

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Section: Discussionmentioning

confidence: 99%

“…Research on scissors used in surgery has undergone a resurgence due to the need for virtual reality (VR) systems and surgical robot development [3][4][5][6][7]. Ergonomics has also been considered for scissors in recent years.…”

Section: Introductionmentioning

confidence: 99%

A Low Mean Closing Load and a Decrease in Load Change at the Tip Increase the Comfort of Scissors

Ota,

Kaneda,

Maeda

et al. 2024

Cureus

View full text Add to dashboard Cite

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“…Many studies have reported that fluctuations in frictional resistance occur on the finger surface of humans and cause a stick-slip feeling [15,[18][19][20]. Funahashi et al reported that vibration feedback heightened the reality of virtual cutting [14]. It was suggested that dry, creaking, and hard feels were derived from fine fluctuations of F xy .…”

Section: Discussionmentioning

confidence: 99%

“…The calculated forces were displayed by a 2 degree-of-freedom haptic scissors system [13]. Funahashi et al displayed cutting sensation by combining vibrations and cutting sound [14].Scissors and forceps are used not only for cutting, but also for grasping objects. In this study, the mechanical stimuli were measured when a test subject grasped or cut an object with scissors.…”

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Tactile Feels in Grasping/Cutting Processes with Scissors

Waga

Aita

Noma³

et al. 2018

Technologies

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Understanding the dynamic phenomena in grasping/cutting processes with scissors is important for the design of surgical robots and virtual reality systems. Here, we show the relationship between the mechanical stimuli and tactile sensations when forceps or scissors are used. Nineteen subjects grasped or cut objects and evaluated the tactile sensations in each of the processes. To conduct the tactile and mechanical evaluation simultaneously, subjects operated scissors that were fixed to a mechanical evaluation system. When subjects grasped urethane resin, stainless steel plate, and adhesive tape, soft, hard, and sticky feels were perceived, respectively. Dry, hard, and creaking feels were perceived in the paper cutting process. In addition, we observed four characteristic tangential force profiles in the processes. Regression analysis suggests the following findings: Hardness is perceived by the change of force and blade movement when the scissors make contact with the object. Stickiness is caused by the increase and decrease of force at the moment of peeling when the scissors break contact with the object. The cutting sensation is affected by fine force fluctuations during the scissors closing and the rapidly decreased force at the moment of cutting completion.Technologies 2018, 6, 66 2 of 9 paper or chicken [9]. Okamura et al. modeled the cutting force from the standpoints of friction, motion, and physical properties of objects [10]. Fujino et al. calculated the force applied to the hand, the restoring force of the leaf spring portion, and the friction inside the device when a test subject cut selected objects with micro shearing blades [11]. Weiss et al. developed two-dimensional, deformable, mass-spring models. They simulated the deformation of the tissue mesh from the position, speed, net force, and external force vector of each node on the virtual blade [12]. Fratu et al. calculated the forces applied to the scissors from a torque-angle response model synthesized from measurement data multiplied by a ratio that depends on the position of the cutting crack edge and the curve of the blades. The calculated forces were displayed by a 2 degree-of-freedom haptic scissors system [13]. Funahashi et al. displayed cutting sensation by combining vibrations and cutting sound [14].Scissors and forceps are used not only for cutting, but also for grasping objects. In this study, the mechanical stimuli were measured when a test subject grasped or cut an object with scissors. The objects were selected to analyze the relationship between tactile feels and physical stimuli. Nineteen subjects evaluated the tactile feels when they grasped or cut objects with different moduli of elasticity or different surface properties. Urethane resin, stainless steel plate, and adhesive tape were grasped with forceps to clarify the physical origin of the hardness and stickiness. To clarify the physical origin of the cutting sensation, the paper was cut with scissors. The mechanical stimuli and movements of the scissors during the grasping and ...

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Virtual Scissors in a Thin Haptic and Force Feedback Environment

Cited by 2 publications

References 3 publications

A Low Mean Closing Load and a Decrease in Load Change at the Tip Increase the Comfort of Scissors

A Low Mean Closing Load and a Decrease in Load Change at the Tip Increase the Comfort of Scissors

Tactile Feels in Grasping/Cutting Processes with Scissors

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