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2015 ; 2015
(ä): 5378-5383
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Tendons, Concentric Tubes, and a Bevel Tip: Three Steerable Robots in One
Transoral Lung Access System
#MMPMID26157600
Swaney PJ
; Mahoney AW
; Remirez AA
; Lamers E
; Hartley BI
; Feins RH
; Alterovitz R
; Webster RJ 3rd
IEEE Int Conf Robot Autom
2015[May]; 2015
(ä): 5378-5383
PMID26157600
show ga
Lung cancer is the most deadly form of cancer, and survival depends on
early-stage diagnosis and treatment. Transoral access is preferable to
traditional between-the-ribs needle insertion because it is less invasive and
reduces risk of lung collapse. Yet many sites in the peripheral zones of the lung
or distant from the bronchi cannot currently be accessed transorally, due to the
relatively large diameter and lack of sufficient steerablity of current
instrumentation. To remedy this, we propose a new robotic system that uses a
tendon-actuated device (bronchoscope) as a first stage for deploying a concentric
tube robot, which itself is a vehicle through which a bevel steered needle can be
introduced into the soft tissue of the lung outside the bronchi. In this paper we
present the various components of the system and the workflow we envision for
deploying the robot to a target using image guidance. We describe initial
validation experiments in which we puncture ex vivo bronchial wall tissue and
also target a nodule in a phantom with an average final tip error of 0.72 mm.