Transapical Aortic Valve Implantation: Step by Step

Walther, Thomas; Dewey, Todd M.; Borger, Michael A.; Kempfert, Jörg; Linke, Axel; Becht, Reinhardt; Falk, Volkmar; Schuler, Gerhard; Mohr, Friedrich W.; Mack, Michael J.

doi:10.1016/j.athoracsur.2008.08.017

Cited by 278 publications

(204 citation statements)

References 4 publications

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“…The method used to perform transfemoral and transapical TAVI with an ES valve has been described [6]. A transfemoral-first approach to TAVI was used.…”

Section: Operative Methodsmentioning

confidence: 99%

Extracorporeal Membrane Oxygenation for Very High-risk Transcatheter Aortic Valve Implantation

Seco

Forrest

Jackson

et al. 2014

Heart, Lung and Circulation

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“…The method used to perform transfemoral and transapical TAVI with an ES valve has been described [6]. A transfemoral-first approach to TAVI was used.…”

Section: Operative Methodsmentioning

confidence: 99%

Extracorporeal Membrane Oxygenation for Very High-risk Transcatheter Aortic Valve Implantation

Seco

Forrest

Jackson

et al. 2014

Heart, Lung and Circulation

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show abstract

“…Transapical aortic valve implantation (TA-AVI) is a new minimally invasive surgical technique and presents a good option for the high risk and inoperable patients with critical symptomatic aortic stenosis [3,4]. Compared to the standard heart valve surgery, this technique limits the surgical access to a small minithoracotomy causing minimal tissue trauma and can be performed on the beating heart without cardiopulmonary bypass support [3].…”

Section: Introductionmentioning

confidence: 99%

“…Compared to the standard heart valve surgery, this technique limits the surgical access to a small minithoracotomy causing minimal tissue trauma and can be performed on the beating heart without cardiopulmonary bypass support [3]. Recovery time may be reduced and the patient can eventually return to normal activity more quickly [5].…”

Section: Introductionmentioning

confidence: 99%

“…The apex of the left ventricle is punctured with a needle, and the aortic valve prosthesis (AVP) is positioned within the stenotic aortic valve using guide wires. After reaching the correct position of implantation, the stented valve prosthesis is deployed by an inflatable balloon to reach its final diameter, thus fixing the prosthesis to the aortic wall as shown in Fig.1 (right) [3].…”

Section: Introductionmentioning

confidence: 99%

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Aortic valve prosthesis tracking for transapical aortic valve implantation

et al. 2010

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Purpose Transapical aortic valve implantation (TA-AVI) is a new minimally invasive surgical treatment of aortic stenosis for high risk patients. The placement of aortic valve prosthesis (AVP) is performed under 2D Xray fluoroscopic guidance. Difficult clinical complications can arise if the implanted valve is misplaced. Therefore we present a method to track the AVP in 2D X-ray fluoroscopic images in order to improve the accuracy of the TA-AVI. MethodsThe proposed tracking method includes the template matching approach to estimate the position of AVP and a shape model of the prosthesis to extract the corner points of the AVP in each image of sequence. To start the AVP tracking procedure, an initialization step is performed by manually defining the corner points of the prosthesis in the first image of sequence to provide the required algorithm parameters such as the AVP model parameters.Results We evaluated the AVP tracking method on six 2D intra-operative fluoroscopic image sequences. The results of automatic AVP localization agree well with manually-defined AVP positions. The maximum localization errors of tracked prosthesis are less than 1 mm and within the clinical accepted range.Conclusions For assisting the TA-AVI, a method for tracking the AVP in 2D X-ray fluoroscopic image sequences has been developed. Our AVP tracking method is a first step towards automatic optimal placement of the AVP during the TA-AVI.

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“…The clinical paradigm for MIROS is MRI-guided robotic TAVI on the beating heart, which is demonstrated by Walther et al [17] as a single-port access procedure. Fig.…”

Section: A Overviewmentioning

confidence: 99%

Implementation of a force-feedback interface for robotic assisted interventions with real-time MRI guidance

Sternberg

Kilicarslan

Navkar

et al. 2013

2013 IEEE International Conference on Robotics and Automation

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Abstract-Efficient and intuitive interfacing of the interventionalist to the information and tools available from image-guided robotic assisted surgeries is required to achieve the full benefit of these technologies. Ongoing research has been performed into the use of forbidden region guided fixtures (FRVF) for human-in-the-loop control of image-guided procedures via haptic force-feedback devices (FFD). Although commercially available FFD provide sufficient degrees-offreedom (DoF), collaborating clinicians, as well as the results of our previous work indicate that these systems are not completely intuitive for controlling fixed-point access interventional tool which have a remote center of motion. Within this context, we introduce a new FFD which is designed with the same DoF constraints as a fixed-point access interventional tool. The device is tested in a clinical simulation of a robot assisted trans-apical valve implantation under guidance from real-time magnetic resonance imaging. Preacquired real-time images are used in the clinical simulation to dynamically update the FRVF and therefore provide guiding forces to allow the operator to see the safe boundaries of operation via a visualization interface and physically feel them through the FFD. Inertial and gravity compensation and per DoF dynamic response of the physical prototype are validated and the frequency response of the system demonstrates it is adequate for tactile sensing. During clinical simulation the operator was successfully able to maneuver the tool within the safe path to the region of interest with the guidance of visual and force-feedback.

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Transapical Aortic Valve Implantation: Step by Step

Cited by 278 publications

References 4 publications

Extracorporeal Membrane Oxygenation for Very High-risk Transcatheter Aortic Valve Implantation

Extracorporeal Membrane Oxygenation for Very High-risk Transcatheter Aortic Valve Implantation

Aortic valve prosthesis tracking for transapical aortic valve implantation

Implementation of a force-feedback interface for robotic assisted interventions with real-time MRI guidance

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