HapticV1, Main, Merge, bibRecord, 003914

A Comparative Study Between an Improved Novel Air-Cushion Sensor and a Wheeled Probe for Minimally Invasive Surgery

Identifieur interne : 003914 ( Main/Merge ); précédent : 003913; suivant : 003915

A Comparative Study Between an Improved Novel Air-Cushion Sensor and a Wheeled Probe for Minimally Invasive Surgery

Auteurs : Dinusha Zbyszewski ; Benjamin Challacombe ; Jichun Li ; Lakmal Seneviratne ; Kaspar Althoefer ; Prokar Dasgupta ; Declan Murphy

Source :

Journal of Endourology [ 0892-7790 ] ; 2010.

RBID : PMC:2956525

English descriptors

KwdEn :
- Air, Equipment Design, Minimally Invasive Surgical Procedures (instrumentation), Models, Biological.
MESH :
- instrumentation : Minimally Invasive Surgical Procedures.
- Air, Equipment Design, Models, Biological.

Abstract

AbstractPurpose

We describe a comparative study between an enhanced air-cushion tactile sensor and a wheeled indentation probe. These laparoscopic tools are designed to rapidly locate soft-tissue abnormalities during minimally invasive surgery (MIS).

Materials and Methods

The air-cushion tactile sensor consists of an optically based sensor with a 7.8 mm sphere “floating” on a cushion of air at the tip of a shaft. The wheeled indentation probe is a 10 mm wide and 5 mm in diameter wheel mounted to a force/torque sensor. A continuous rolling indentation technique is used to pass the sensors over the soft-tissue surfaces. The variations in stiffness of the viscoelastic materials that are detected during the rolling indentations are illustrated by stiffness maps that can be used for tissue diagnosis. The probes were tested by having to detect four embedded nodules in a silicone phantom. Each probe was attached to a robotic manipulator and rolled over the silicone phantom in parallel paths. The readings of each probe collected during the process of rolling indentation were used to achieve the final results.

Results

The results show that both sensors reliably detected the areas of variable stiffness by accurately identifying the location of each nodule. These are illustrated in the form of two three-dimensional spatiomechanical maps.

Conclusions

These probes have the potential to be used in MIS because they could provide surgeons with information on the mechanical properties of soft tissue, consequently enhancing the reduction in haptic feedback.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2956525

DOI: 10.1089/end.2010.0131
PubMed: 20624084
PubMed Central: 2956525

Links to Exploration step

PMC:2956525

Le document en format XML

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<author><name sortKey="Challacombe, Benjamin" sort="Challacombe, Benjamin" uniqKey="Challacombe B" first="Benjamin" last="Challacombe">Benjamin Challacombe</name>
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<author><name sortKey="Li, Jichun" sort="Li, Jichun" uniqKey="Li J" first="Jichun" last="Li">Jichun Li</name>
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<author><name sortKey="Seneviratne, Lakmal" sort="Seneviratne, Lakmal" uniqKey="Seneviratne L" first="Lakmal" last="Seneviratne">Lakmal Seneviratne</name>
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<author><name sortKey="Seneviratne, Lakmal" sort="Seneviratne, Lakmal" uniqKey="Seneviratne L" first="Lakmal" last="Seneviratne">Lakmal Seneviratne</name>
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<front><div type="abstract" xml:lang="en"><title>Abstract</title>
<sec><title>Purpose</title>
<p>We describe a comparative study between an enhanced air-cushion tactile sensor and a wheeled indentation probe. These laparoscopic tools are designed to rapidly locate soft-tissue abnormalities during minimally invasive surgery (MIS).</p>
</sec>
<sec><title>Materials and Methods</title>
<p>The air-cushion tactile sensor consists of an optically based sensor with a 7.8 mm sphere “floating” on a cushion of air at the tip of a shaft. The wheeled indentation probe is a 10 mm wide and 5 mm in diameter wheel mounted to a force/torque sensor. A continuous rolling indentation technique is used to pass the sensors over the soft-tissue surfaces. The variations in stiffness of the viscoelastic materials that are detected during the rolling indentations are illustrated by stiffness maps that can be used for tissue diagnosis. The probes were tested by having to detect four embedded nodules in a silicone phantom. Each probe was attached to a robotic manipulator and rolled over the silicone phantom in parallel paths. The readings of each probe collected during the process of rolling indentation were used to achieve the final results.</p>
</sec>
<sec><title>Results</title>
<p>The results show that both sensors reliably detected the areas of variable stiffness by accurately identifying the location of each nodule. These are illustrated in the form of two three-dimensional spatiomechanical maps.</p>
</sec>
<sec><title>Conclusions</title>
<p>These probes have the potential to be used in MIS because they could provide surgeons with information on the mechanical properties of soft tissue, consequently enhancing the reduction in haptic feedback.</p>
</sec>
</div>
</front>
</TEI>
</record>

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A Comparative Study Between an Improved Novel Air-Cushion Sensor and a Wheeled Probe for Minimally Invasive Surgery

A Comparative Study Between an Improved Novel Air-Cushion Sensor and a Wheeled Probe for Minimally Invasive Surgery

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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