Research Papers

Design and Manufacturing of Embedded Air-Muscles for a Magnetic Resonance Imaging Compatible Prostate Cancer Binary Manipulator

[+] Author and Article Information
Geneviève Miron

e-mail: genevieve.miron@usherbrooke.ca

Alexandre Girard

e-mail: alexandre.girard2@usherbrooke.ca

Jean-Sébastien Plante

e-mail: jean-sebastien.plante@usherbrooke.caDepartment of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, QC, J1K 2R1, Canada

Martin Lepage

Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Sherbrooke, QC, J1H 5N4, Canada e-mail: martin.lepage@usherbrooke.ca

Contributed by the Mechanisms and Robotics Committee of ASME for publication in the Journal of Mechanical Design. Manuscript received May 30, 2012; final manuscript received September 28, 2012; published online November 19, 2012. Assoc. Editor: Oscar Altuzarra.

J. Mech. Des 135(1), 011003 (Nov 19, 2012) (10 pages) Paper No: MD-12-1289; doi: 10.1115/1.4007932 History: Received May 30, 2012; Revised September 28, 2012

Magnetic resonance imaging (MRI) compatible robots can assist physicians with the insertion of biopsy needles and needle-like therapeutic instruments directly into millimeter-size tumors, using MR images as feedback. However, MRI systems present a challenging environment with high magnetic fields and limited space, making the development of MRI-compatible robots complex. This paper presents an MRI-compatible pneumatic actuation technology consisting of molded polymer structures with embedded air-muscles operated in a binary fashion. Along with its good positioning accuracy, the technology presents advantages of compactness, perfect MRI-compatibility, simplicity and low cost. Here, we specifically report the design and validation of a transperineal prostate cancer manipulator prototype that has 20 embedded air-muscles distributed in four star-like polymer structures. These compliant structures are made of silicone elastomer, using lost-core injection molding. Low motion hysteresis and good precision are achieved by designing molded joints that eliminate sliding surfaces. An effective design method for such embedded polymer air-muscles is proposed, using a manipulator model and four air-muscle design models: geometrical, finite elements, uniaxial analytic, and experimental. Binary control of each air-muscle ensures stability and accuracy with minimized costs and complexity. The prototype is found MRI-compatible with no observable effects on the signal-to-noise ratio and, with appropriate image feedback, is found to reach targets with precision and accuracy under 0.5 mm. The embedded approach reveals to be a key feature since it reduces hysteresis errors by a factor of ≈7 compared to a previous nonembedded version of the manipulator. The successful validation of this binary manipulator opens the door to a new design paradigm for low cost and highly capable pneumatic robots.

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Francis, P., and Winfield, H. N., 2006, “Medical Robotics: The Impact on Perioperative Nursing Practice,” Urol. Nurs., 26(2), pp.99–104, 107–108. [PubMed]
Chinzei, K., and Miller, K., 2001, “Towards MRI Guided Surgical Manipulator,” Med. Sci. Monit.: Int. Med. J. Exp. Clin. Res., 7(1), pp. 153–163.
Jolesz, F., 2005, “Future Perspectives for Intraoperative MRI,” Neurosurg. Clin. N. Am., 16(1), pp. 201–213. [CrossRef] [PubMed]
Hricak, H., Choyke, P. L., Eberhardt, S. C., Leibel, S. A., and Scardino, P. T., 2007, “Imaging Prostate Cancer: A Multidisciplinary Perspective,” Radiology, 243(1), pp. 28–53. [CrossRef] [PubMed]
Carroll, P. R., Coakley, F. V., and Kurhanewicz, J., 2006, “Magnetic Resonance Imaging and Spectroscopy of Prostate Cancer,” Rev. Urol., 8(Suppl 1), pp. S4–S10. [PubMed]
Gassert, R., Yamamoto, A., Chapuis, D., Dovat, L., Bleuler, H., and Burdet, E., 2006, “Actuation Methods for Applications in MR Environments,” Concepts Magn. Reson., Part B, 29(4), pp. 191–209. [CrossRef]
Krieger, A., Iordachita, I., Song, S., Cho, N., Guion, P., Fichtinger, G., and Whitcomb, L., 2010, “Development and Preliminary Evaluation of an Actuated MRI-Compatible Robotic Device for MRI-Guided Prostate Intervention,” 2010 IEEE International Conference on Robotics and Automation (ICRA), pp. 1066–1073.
Fischer, G., Iordachita, I., Csoma, C., Tokuda, J., DiMaio, S., Tempany, C., Hata, N., and Fichtinger, G., 2008, “MRI-Compatible Pneumatic Robot for Transperineal Prostate Needle Placement,” IEEE/ASME Trans. Mechatron., 13(3), pp. 295–305. [CrossRef]
Fischer, G. S., Iordachita, I., Csoma, C., Tokuda, J., Mewes, P. W., Tempany, C. M., Hata, N., and Fichtinger, G., 2008, “Pneumatically Operated MRI-Compatible Needle Placement Robot for Prostate Interventions,” IEEE International Conference on Robotics and Automation (ICRA), Proceedings—IEEE International Conference on Robotics and Automation, Institute of Electrical and Electronics Engineers, Inc., pp. 2489–2495.
Hempel, E., Fischer, H., Gumb, L., Hhn, T., Krause, H., Voges, U., Breitwieser, H., Gutmann, B., Durke, J., Bock, M., and Melzer, A., 2003, “An MRI-Compatible Surgical Robot for Precise Radiological Interventions,” Comput. Aided Surg., 8(4), pp. 180–191. [CrossRef] [PubMed]
Caldwell, D., Tsagarakis, N., Medrano-Cerda, G., Schofield, J., and Brown, S., 2001, “A Pneumatic Muscle Actuator Driven Manipulator for Nuclear Waste Retrieval,” Control Eng. Pract., 9(1), pp. 23–36. [CrossRef]
Reynolds, D. B., Repperger, D. W., Phillips, C. A., and Bandry, G., 2003, “Modeling the Dynamic Characteristics of Pneumatic Muscle,” Ann. Biomed. Eng., 31(3), pp. 310–317. [CrossRef] [PubMed]
Hodgson, S., Le, M., Tavakoli, M., and Pham, M., 2011, “Sliding-Mode Control of Nonlinear Discrete-Input Pneumatic Actuators,” IEEE International Conference on Intelligent Robots and Systems, pp. 738–743.
Nguyen, T., Leavitt, J., Jabbari, F., and Bobrow, J., 2007, “Accurate Sliding-Mode Control of Pneumatic Systems Using Low-Cost Solenoid Calves,” IEEE/ASME Trans. Mechatron., 12(2), pp. 216–219. [CrossRef]
Taillant, E., Avila-Vilchis, J., Allegrini, C., Bricault, I., and Cinquin, P., 2004. “CT and MR Compatible Light Puncture Robot: Architectural Design and First Experiments,” Lect. Notes Comput. Sci., 3217, pp. 145–152. [CrossRef]
Stoianovici, D., Patriciu, A., Petrisor, D., Mazilu, D., and Kavoussi, L., 2007. “A New Type of Motor: Pneumatic Step Motor,” IEEE/ASME Trans. Mechatron., 12(1), pp. 98–106. [CrossRef]
Stoianovici, D., Song, D., Petrisor, D., Ursu, D., Mazilu, D., Muntener, M., Schar, M., and Patriciu, A., 2007, “MRI Stealth Robot for Prostate Interventions,” Minimally Invasive Ther. Allied Technol., 16(4), pp. 241–248. [CrossRef]
Zaman, D. N., Suzuki, T., Liao, H., Kobayashi, E., Jimbo, Y., and Sakuma, I., 2007, “Development and Evaluation of a Novel Actuator Using MR Magnetic Field,” IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), IEEE, pp. 1184–1189.
Chirikjian, G., 1994, “A Binary Paradigm for Robotic Manipulators,” Proceedings of the IEEE International Conference on Robotics and Automation, Vol. 4 of Proceedings 1994 IEEE International Conference on Robotics and Automation (Cat. No.94CH3375-3), IEEE Comput. Soc. Press, pp. 3063–3069.
Lees, D., and Chirikjian, G., 1996, “A Combinatorial Approach to Trajectory Planning for Binary Manipulators,” Proceedings of the IEEE International Conference on Robotics and Automation, Vol. 3, pp. 2749–2754.
Tadakuma, K., DeVita, L. M., Plante, J. S., Shaoze, Y., and Dubowsky, S., 2008, “The Experimental Study of a Precision Parallel Manipulator with Binary Actuation: With Application to MRI Cancer Treatment,” IEEE International Conference on Robotics and Automation (ICRA), IEEE, pp. 2503–2508.
Proulx, S., and Plante, J., 2011, “Design and Experimental Assessment of an Elastically Averaged Binary Manipulator Using Pneumatic Air Muscles for Magnetic Resonance Imaging Guided Prostate Interventions,” ASME J. Mech. Des., 133(11), p. 111011. [CrossRef]
Howell, L. L., 2001, Compliant Mechanisms, John Wiley & Sons, NY.
Proulx, S., Chouinard, P., Lucking Bigue, J., Miron, G., and Plante, J., 2011. “Design of a MRI-Compatible Dielectric Elastomer Powered Jet Valve,” Electroactive Polymer Actuators and Devices (EAPAD), 79762C.
Wickramatunge, K., and Leephakpreeda, T., 2010, “Study on Mechanical Behaviors of Pneumatic Artificial Muscle,” Int. J. Eng. Sci., 48(2), pp. 188–198. [CrossRef]
Dollar, A. M., and Howe, R. D., 2006, “A Robust Compliant Grasper via Shape Deposition Manufacturing,” IEEE/ASME Trans. Mechatron., 11(2), pp. 154–161. [CrossRef]
Cullinan, M., DiBiasio, C., Howell, L., Culpepper, M., and Panas, R., 2007, “Modeling of a Clamped-Clamped Carbon Nano-Tube Flexural Element for Use in Nanoelectro-Mechanical Systems,” 13th National Conference on Mechanisms and Machines, pp. 105–110.
Chou, C.-P., and Hannaford, B., 1996, “Measurement and Modeling of McKibben Pneumatic Artificial Muscles,” IEEE Trans. Rob. Autom., 12(1), pp. 90–102. [CrossRef]
Caldwell, D., Medrano-Cerda, G., and Goodwin, M., 1995, “Control of Pneumatic Muscle Actuators,” IEEE Control Syst., 15(1), pp. 40–48. [CrossRef]
Davis, S., Tsagarakis, N., Canderle, J., and Caldwell, D. G., 2003, “Enhanced Modelling and Performance in Braided Pneumatic Muscle Actuators,” Int. J. Rob. Res., 22(3–4), pp. 213–227. [CrossRef]
Daerden, F., Lefeber, D., Verrelst, B., and Van Ham, R., 2001, “Pleated Pneumatic Artificial Muscles: Compliant Robotic Actuators,” Proceedings of 2001 IEEE/RSJ International Conference on Intelligent Robots and Systems, Vol. 4, pp. 1958–1963.
Verrelst, B., Van Ham, R., Vanderborght, B., Lefeber, D., Daerden, F., and Van Damme, M., 2006, “Second Generation Pleated Pneumatic Artificial Muscle and Its Robotic Applications,” Adv. Rob., 20(7), pp. 783–805. [CrossRef]
Yang, W., and Feng, W., 1970, “On Axisymmetrical Deformations of Nonlinear Membranes,” Trans. ASME J. Appl. Mech., 37(4), pp. 1002–1011. [CrossRef]
Wissler, M., 2007, “Modeling Dielectric Elastomer Actuators,” Thesis, Swiss Federal Institute of Technology in Zurich, Sc.D. Thesis, Zurich, Switzerland.
Bazergui, A., Bui-Quoc, T., Biron, A., McIntyre, G., and Laberge, C., 2002, Résistance des matriaux, Presses inter Polytechnique, Montreal, Canada.
Uecker, M., Zhang, S., Voit, D., Karaus, A., Merboldt, K., and Frahm, J., 2010, “Real-Time MRI at a Resolution of 20 ms,” NMR Biomed., 23(8), pp. 986–994. [CrossRef] [PubMed]


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Fig. 1

Prototype using 12 nonembedded air-muscles (left) and muscle details (right) [22]

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Fig. 2

Left: MRI control room. Right: Manipulator and patient on MRI table.

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Fig. 3

Left: Manipulator and star-like structure. Right: Inside geometry of an air-muscle with three molded ribs.

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Fig. 4

Air-muscles cross-section

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Fig. 5

Half-mold with wax inserts

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Fig. 6

Proposed design process

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Fig. 7

Simplified manipulator representations for geometrical design

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Fig. 8

FEA comparative study of ribs influence on membrane stress, air-muscle lengthening and radius increase under 220 kPa

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Fig. 9

2D axisymmetrical FEA model of the air-muscle in the undeformed and deformed states

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Fig. 10

Spring representation of air-muscle for 1D analytical model and principal directions

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Fig. 11

Air-muscle 1D model (Yeoh), FEA, and experimental curves. Note the almost constant offset FP and the almost linear behavior denoted by k.

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Fig. 12

Experimental double-laser set-up

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Fig. 13

Left: Predicted workspace (needle tip positions) of the manipulator using 12 nonembedded air-muscles. Right: Predicted workspace of the manipulator using 20 embedded air-muscles. Dotted line: Required workspace. Full line: Healthy prostate

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Fig. 14

Validation of the manipulator model (20 random targets)

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Fig. 15

Elastically averaged effect (gray arrow) of the actuation of one air-muscle (black) on end-effector

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Fig. 16

Manipulator during MRI gel insertions

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Fig. 17

Insertion tests in ballistic gel




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