Multi-selective catheter for MR-guided endovascular interventions

Clogenson, H. C. M.; Lith, Joris Y. van; Dankelman, Jenny; Melzer, Andreas; Dobbelsteen, John J. van den

doi:10.1016/j.medengphy.2015.03.015

Cited by 6 publications

(15 citation statements)

References 28 publications

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“…In comparison, Clogenson [50] could reach the contralateral iliac bifurcation, the left renal artery, the left subclavian artery and the brachiocephalic trunk on the Elastrat model with their multiselective MRI-guided catheter. But on the animal they only could cannulate the supraaortic trunks because the abdominal aorta was too narrow for their prototype.…”

Section: Discussionmentioning

confidence: 97%

Design and Experimental Validation of an Active Catheter for Endovascular Navigation

Couture

Szewczyk

2017

Journal of Medical Devices

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Endovascular technique has many advantages but relies strongly on operator skills and experience. Robotically steerable catheters have been developed but few are clinically available.We describe here the development of an active and efficient catheter based on Shape Memory Alloys (SMA) actuators.We first establish the specifications of our device considering anatomical constraints. We then present a new method for building active SMA-based catheters. The proposed method relies on the use of a core body made of three parallel metallic beams and integrates wire-shaped SMA actuators. The complete device is encapsulated into a standard 6F catheter for safety purposes.A trial-error campaign comparing 70 different prototypes is then conducted to determine the best dimensions of the core structure and of the SMA actuators with respect to the imposed specifications. The final prototype is tested on a silicon-based arterial model and on a 23-kg pig.During these experiments we were able to cannulate the supra-aortic trunks and the renal arteries with different angulations and without any complication. * Corresponding authorA second major contribution of this paper is the derivation of a reliable mathematical model for predicting the bending angle of our active catheters. We first use this model to state some general qualitative rules useful for an iterative dimensional optimization. We then perform a quantitative comparison between the actual and the predicted bending angles for a set of 13 different prototypes. It happens that the relative error is less than 20% for bending angles between 100° and 150° which is the interval of interest for our applications.challenging and may result in an unsuccessful procedure. In most cases, several material exchanges are needed in one procedure, increasing the operative time. Several endovascular robotic systems have been developed to improve catheter navigation and reduce both the operating time and material.

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Section: Discussionmentioning

confidence: 97%

Design and Experimental Validation of an Active Catheter for Endovascular Navigation

Couture

Szewczyk

2017

Journal of Medical Devices

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“…This study referenced to previously published works [ 9 , 14 – 16 ]. A CIDMA catheter includes connected in sequence, a distal portion, a main body portion and a control handle (Fig.…”

Section: Methodsmentioning

confidence: 75%

“…As described in detail previously [ 14 ], the main body portion is the shaft of the catheter (115 cm long, 2.52 mm outside diameter), which is made of polyether ether ketone (PEEK) tube, a biocompatible material with the stiffest polymer and high tensile strength, torqueability, and pushability. The deflectable segment or the adjustable circle could be actuated by a 0.12 mm diameter pull-wire that is attached at the most distal part of its corresponding segment.…”

Section: Methodsmentioning

confidence: 99%

“…The maximum relative angle between the two links is 180° to ensure that water could be flush through the catheter lumen without obstruction. The links or hinges were manufactured by laser cutting technology [ 14 ].…”

Section: Methodsmentioning

confidence: 99%

“…To perform the ‘en bloc’ ablation of the ipsilateral PVs, and reduce the procedure time, a novel, circular-irrigated, deca-channel mapping and ablation catheter (CIDMA) is designed and developed by Micro Port EP MedTech Co. Ltd. (Shanghai, China). This catheter is developed and could be used as a multi-selective catheter for MRI-guided cardiovascular interventions [ 14 ]. Comparing with nMARQ catheter, this catheter could conveniently adapt to PV anatomy during the PVI procedure due to improved technical and morphological designs.…”

Section: Introductionmentioning

confidence: 99%

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Development, safety and efficacy of a novel circular-irrigated deca-channel mapping and ablation catheter for pulmonary vein isolation

Feng

Chen

Sun

et al. 2018

BMC Cardiovasc Disord

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BackgroundPulmonary vein isolation (PVI), a cornerstone for catheter ablation of atrial fibrillation (AF), remains a complex and time-consuming procedure. Present study introduces a novel, circular-irrigated, deca-channel mapping and ablation catheter (CIDMA), describes the in vitro test results on feasibility, safety, and acute efficacy of the CIDMA catheter.MethodsAn assembled CIDMA catheter was subjected to a number of in vitro tests. With this catheter, ablation procedures were first performed in a pig’s myocardial strips in vitro to determine the effects in unipolar or bipolar configuration.ResultsThree catheters were assembled. The adjustable circular diameter was changed from initial state of 32.41 ± 0.61 mm into controlled state of 28.61 ± 0.47 mm (P = 0.013). In the plastic model, the push-ability, torque-ability, and kink resistance of CIDMA catheter were shown to be satisfactory.In vitro, our findings showed that ablation could produce obvious ablation lesions, and unipolar ablation (at length, width and depth of 5.0 ± 1.3, 4.6 ± 0.7, and 4.2 ± 0.6 mm, respectively) was more effective than bipolar (at length, width and depth of 2.8 ± 0.2, 4.2 ± 0.5, and 2.3 ± 0.4 mm, respectively) (P < 0.01).ConclusionsIn vitro, our preliminary data suggest that the CIDMA catheter produced optimal ablation lesions, especially in the unipolar ablation mode. Future in vivo animal and clinical studies are warranted to test the efficacy of this catheter in real-world scenario.

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Thermally Drawn Polymeric Catheters for MR‐Guided Cardiovascular Intervention

Abdelaziz,

Tian,

Lottner

et al. 2024

Advanced Science

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Cardiovascular diseases (CVDs), including congenital heart diseases (CHD), present significant global health challenges, emphasizing the need for safe and effective treatment modalities. Fluoroscopy‐guided endovascular interventions are widely utilized but raise concerns about ionizing radiation, especially in pediatric cases. Magnetic resonance imaging (MRI) offers a radiation‐free alternative with superior soft tissue visualization and functional insights. However, the lack of compatible instruments remains a major obstacle. An adapted thermal drawing platform that enables low‐cost and rapid prototyping of instruments for MR‐guided endovascular interventions is introduced. This platform is demonstrated through the development of two exemplary catheter systems: a tendon‐driven steerable catheter with helical lumina and an active tracking Tiger‐shaped catheter with an embedded coaxial wire. These catheters exhibit mechanical properties comparable to commercial counterparts and show promising outcomes in both in vitro and in vivo feasibility testing. This scalable thermal drawing platform addresses the limitations of existing manufacturing approaches and facilitates the exploration of diverse designs, potentially accelerating advancements in catheter technologies for MR‐guided cardiovascular interventions.

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Multi-selective catheter for MR-guided endovascular interventions

Cited by 6 publications

References 28 publications

Design and Experimental Validation of an Active Catheter for Endovascular Navigation

Design and Experimental Validation of an Active Catheter for Endovascular Navigation

Development, safety and efficacy of a novel circular-irrigated deca-channel mapping and ablation catheter for pulmonary vein isolation

Thermally Drawn Polymeric Catheters for MR‐Guided Cardiovascular Intervention

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