Control of intravascular catheters using an array of active steering coils

Gudino, Natalia; Heilman, Jeremiah A.; Derakhshan, Jamal J.; Sunshine, Jeffrey L.; Duerk, Jeffrey L.; Griswold, Mark A.

doi:10.1118/1.3600693

Cited by 36 publications

(46 citation statements)

References 29 publications

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“…Once magnetized, forces can be applied to the sphere with magnetic gradient field. Contrary to methods [2], [3], this method do not present risks of locally heating blood and tissue.…”

Section: Introductionmentioning

confidence: 81%

“…Compared with fluoroscopy, Magnetic Resonance Imaging (MRI) offers improved soft tissue resolution and eliminates ionizing radiation exposure [1]. Moreover, recent efforts [2], [3] have been put in to use the magnetic properties of the MRI apparatus for catheter manipulations. Using coils at the distal end of a catheter, different currents are applied to steer the tip of the catheter [2], [3].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, recent efforts [2], [3] have been put in to use the magnetic properties of the MRI apparatus for catheter manipulations. Using coils at the distal end of a catheter, different currents are applied to steer the tip of the catheter [2], [3]. Current is provided from a power supply or from the MRI radio-frequency subsystem.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Safety evaluation of magnetic catheter steering with upgraded magnetic resonance imaging system

Bringout

Lalande

Gosselin

2010

2010 Annual International Conference of the IEEE Engineering in Medicine and Biology

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Catheter navigation and placement through the arterial network is a major limitation for clinical procedure. In this article, a specific catheter tip and a modified clinical MRI scanner with an upgraded gradient system are used to steer a catheter through a single Y-shaped bifurcation. Safety aspects are analyzed to avoid the peripheral nerve stimulation (PNS) according to an empirical law of magnetostimulation and the magnetic field of upgraded 3D gradient coils. For a rabbit-sized device, the rising time of gradients system have to be limited to 1.7ms at 400mT.m(-1) to avoid PNS. These rise time values allow the use of this system for catheter steering and other more demanding applications.

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“…Once magnetized, forces can be applied to the sphere with magnetic gradient field. Contrary to methods [2], [3], this method do not present risks of locally heating blood and tissue.…”

Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Safety evaluation of magnetic catheter steering with upgraded magnetic resonance imaging system

Bringout

Lalande

Gosselin

2010

2010 Annual International Conference of the IEEE Engineering in Medicine and Biology

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“…This system which requires a dedicated operating room relies on X-ray fluoroscopy (with radiation exposure to the patient and physician) for imagery just as in traditional catheterization. Recently, ideas have been presented to steer a catheter inside a Magnetic Resonance Imaging (MRI) system using wound coils [5][6][7]. By passing electrical current in the coils at the tip of the catheter, a magnetic field is created which interacts with the permanent field of the MRI apparatus, thus generating a steering torque on the catheter.…”

Section: Introductionmentioning

confidence: 99%

Catheter steering using a Magnetic Resonance Imaging system

Lalande

Gosselin

2010

2010 Annual International Conference of the IEEE Engineering in Medicine and Biology

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A catheter is successfully bent and steered by applying magnetic gradients inside a Magnetic Resonance Imaging system (MRI). One to three soft ferromagnetic spheres are attached at the distal tip of the catheter with different spacing between the spheres. Depending on the interactions between the spheres, progressive or discontinuous/jumping displacement was observed for increasing magnetic load. This phenomenon is accurately predicted by a simple theoretical dipole interaction model.

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“…The pair of copper wires was connected to 500 3 500-mm copper pads at the center of the coil pattern (21), shape memory polymer (22), or magnetic means. The magnetic approach leverages an interaction with the main magnetic field (B 0 ) or gradient fields (G) and can use rare earth permanent magnet beads (23,24) or a microcoil (25). The magnetically assisted remote-controlled (MARC) catheter, developed by our group, interacts with B 0 and uses microcoils.…”

Section: Marc Catheter System Designmentioning

confidence: 99%

Endovascular MR-guided Renal Embolization by Using a Magnetically Assisted Remote-controlled Catheter System

Lillaney¹,

Yang

Losey³

et al. 2016

Radiology

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Purpose:To assess the feasibility of a magnetically assisted remotecontrolled (MARC) catheter system under magnetic resonance (MR) imaging guidance for performing a simple endovascular procedure (ie, renal artery embolization) in vivo and to compare with x-ray guidance to determine the value of MR imaging guidance and the specific areas where the MARC system can be improved. Materials and Methods:In concordance with the Institutional Animal Care and Use Committee protocol, in vivo renal artery navigation and embolization were tested in three farm pigs (mean weight 43 kg 6 2 [standard deviation]) under real-time MR imaging at 1.5 T. The MARC catheter device was constructed by using an intramural copper-braided catheter connected to a laser-lithographed saddle coil at the distal tip. Interventionalists controlled an in-room cart that delivered electrical current to deflect the catheter in the MR imager. Contralateral kidneys were similarly embolized under x-ray guidance by using standard clinical catheters and guidewires. Changes in renal artery flow and perfusion were measured before and after embolization by using velocity-encoded and perfusion MR imaging. Catheter navigation times, renal parenchymal perfusion, and renal artery flow rates were measured for MR-guided and xray-guided embolization procedures and are presented as means 6 standard deviation in this pilot study. Results:Embolization was successful in all six kidneys under both x-ray and MR imaging guidance. Mean catheterization time with MR guidance was 93 seconds 6 56, compared with 60 seconds 6 22 for x-ray guidance. Mean changes in perfusion rates were 4.9 au/sec 6 0.8 versus 4.6 au/sec 6 0.6, and mean changes in renal flow rate were 2.1 mL/ min/g 6 0.2 versus 1.9 mL/min/g 6 0.2 with MR imaging and x-ray guidance, respectively. Conclusion:The MARC catheter system is feasible for renal artery catheterization and embolization under real-time MR imaging in vivo, and quantitative physiologic measures under MR imaging guidance were similar to those measured under x-ray guidance, suggesting that the MARC catheter system could be used for endovascular procedures with interventional MR imaging.q RSNA, 2016

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Control of intravascular catheters using an array of active steering coils

Cited by 36 publications

References 29 publications

Safety evaluation of magnetic catheter steering with upgraded magnetic resonance imaging system

Safety evaluation of magnetic catheter steering with upgraded magnetic resonance imaging system

Catheter steering using a Magnetic Resonance Imaging system

Endovascular MR-guided Renal Embolization by Using a Magnetically Assisted Remote-controlled Catheter System

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