Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument
Surgical robotic tools are being developed for a variety of surgical procedures that are executed within small workspaces. Novel designs of miniaturized cable-actuated surgical tools for cleft palate repair have previously been developed. However, the behavior and significance of friction within the...
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MDPI AG
2024-08-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/13/9/326 |
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| author | Caitlin Ho Thomas Looi Glenn Maguire Dale J. Podolsky |
| author_facet | Caitlin Ho Thomas Looi Glenn Maguire Dale J. Podolsky |
| author_sort | Caitlin Ho |
| collection | DOAJ |
| description | Surgical robotic tools are being developed for a variety of surgical procedures that are executed within small workspaces. Novel designs of miniaturized cable-actuated surgical tools for cleft palate repair have previously been developed. However, the behavior and significance of friction within these tools are largely unknown. A study was conducted to investigate the friction in a pulleyless 3 mm diameter wristed instrument. The wrist utilizes cable guide channels that allow for miniaturization at the cost of increased friction. An experimental rig was developed to measure friction within the wrist link mechanism when the tool is positioned at various pitch angles. A strong relationship between the cable tension and the tool’s pitch angle was found as a result of friction. The cable tension increased as the pitch angle approached extreme values (percent increases in the cable tension of 33% and 67.3% at a pitch of 90° and −90°, respectively). However, the resultant cable tension was below the failure strength of the cable, indicating that the design is feasible. The results of this study would be useful to those considering the design of miniature robotic surgical tools that are cable-driven. Significant tool reduction can be achieved by employing static guide channels for the cables, forgoing the use of additional moving components like pulleys while maintaining cable tension well within its break strength. Future work in the design and optimization of novel miniaturized wrist mechanisms should consider frictional effects and their impact on mechanism function. |
| format | Article |
| id | doaj-art-080439ca46cf4bdeae704e0b98d9f9c8 |
| institution | OA Journals |
| issn | 2076-0825 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj-art-080439ca46cf4bdeae704e0b98d9f9c82025-08-20T01:56:01ZengMDPI AGActuators2076-08252024-08-0113932610.3390/act13090326Characterization of Friction within a Novel 3 mm Wristed Robotic InstrumentCaitlin Ho0Thomas Looi1Glenn Maguire2Dale J. Podolsky3Department of Mechanical and Mechatronics Engineering, The University of Waterloo, Waterloo, ON N2L 3G1, CanadaInstitute for Craniofacial and Cleft Innovation, Hospital for Sick Children, 555 University Ave., Toronto, ON M5G 1X8, CanadaInstitute for Craniofacial and Cleft Innovation, Hospital for Sick Children, 555 University Ave., Toronto, ON M5G 1X8, CanadaInstitute for Craniofacial and Cleft Innovation, Hospital for Sick Children, 555 University Ave., Toronto, ON M5G 1X8, CanadaSurgical robotic tools are being developed for a variety of surgical procedures that are executed within small workspaces. Novel designs of miniaturized cable-actuated surgical tools for cleft palate repair have previously been developed. However, the behavior and significance of friction within these tools are largely unknown. A study was conducted to investigate the friction in a pulleyless 3 mm diameter wristed instrument. The wrist utilizes cable guide channels that allow for miniaturization at the cost of increased friction. An experimental rig was developed to measure friction within the wrist link mechanism when the tool is positioned at various pitch angles. A strong relationship between the cable tension and the tool’s pitch angle was found as a result of friction. The cable tension increased as the pitch angle approached extreme values (percent increases in the cable tension of 33% and 67.3% at a pitch of 90° and −90°, respectively). However, the resultant cable tension was below the failure strength of the cable, indicating that the design is feasible. The results of this study would be useful to those considering the design of miniature robotic surgical tools that are cable-driven. Significant tool reduction can be achieved by employing static guide channels for the cables, forgoing the use of additional moving components like pulleys while maintaining cable tension well within its break strength. Future work in the design and optimization of novel miniaturized wrist mechanisms should consider frictional effects and their impact on mechanism function.https://www.mdpi.com/2076-0825/13/9/326frictiontransoral robotic surgerycleft palate repairda Vinci surgical systemcable drivenrobotic-assisted surgery |
| spellingShingle | Caitlin Ho Thomas Looi Glenn Maguire Dale J. Podolsky Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument Actuators friction transoral robotic surgery cleft palate repair da Vinci surgical system cable driven robotic-assisted surgery |
| title | Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument |
| title_full | Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument |
| title_fullStr | Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument |
| title_full_unstemmed | Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument |
| title_short | Characterization of Friction within a Novel 3 mm Wristed Robotic Instrument |
| title_sort | characterization of friction within a novel 3 mm wristed robotic instrument |
| topic | friction transoral robotic surgery cleft palate repair da Vinci surgical system cable driven robotic-assisted surgery |
| url | https://www.mdpi.com/2076-0825/13/9/326 |
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