Karl Price

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OBJECTIVE Rigid endoscopes enable minimally invasive access to the ventricular system; however, the operative field is limited to the instrument tip, necessitating rotation of the entire instrument and causing consequent tissue compression while reaching around corners. Although flexible endoscopes offer tip steerability to address this limitation, they are(More)
About 20% of brain surgeries are performed to remove lesions located inside or adjacent to the brain’s ventricles [1]. Using endoscopes, neurosurgeons can navigate their instruments through the ventricles to reach these lesions with less damage to healthy brain tissue than occurs in open surgery. Current endoscopes, however, are restricted by several(More)
The da Vinci Surgical System is a commercially available surgical robotics platform used to perform more than 450,000 surgeries annually, primarily for gynecological and urological procedures [1]. This technology enhances the surgeon's dexterity through the use of a multiarm robot with wristed instruments that enter a patient's body through small incisions.(More)
Background/introduction Premature birth affects 12.5% of pregnancies, and as a result, intraventricular hemorrhage (IVH) of the brain with subsequent development of hydrocephalus is a major cause of morbidity, mortality, and poor intellectual outcomes. Prospective clinical trials to dissolve IVH clots with intraventricular infusion of tissue plasminogen(More)
We present the design and experimental validation of a magnetorheological (MR) fluid-based passive actuator for tele-robotic bone biopsy procedures. With Finite Element Method Magnet (FEMM) software, the required uniform magnetic field circuit design was simulated. An 1100 turn 24 AWG copper wire coil wrapped around a magnetic core was used to create a(More)
PURPOSE Current treatment of intraventricular hemorrhage (IVH) involves cerebral shunt placement or an invasive brain surgery. Magnetic resonance-guided focused ultrasound (MRgFUS) applied to the brains of pediatric patients presents an opportunity to treat IVH in a noninvasive manner, termed "incision-less surgery." Current clinical and research focused(More)
RESULTS 1,555 patients were included; 861 underwent PCI and 694 underwent CABG (Table 1). Patients with index PCI were more often female, African American, presented with ST-elevation MI, and had previous MI; they were less often diabetic, had congestive heart failure, proximal left anterior descending disease, or presented with stable angina. The rate of(More)
PURPOSE There remains a paucity of direct visualization techniques for beating-heart intracardiac procedures. To address this need, we evaluated a novel cardioscope in the context of aortic paravalvular leaks (PVLs) localization and closure. DESCRIPTION A porcine aortic PVL model was created using a custom-made bioprosthetic valve, and PVL presence was(More)
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