Preliminary experience using a cochlear implant with a novel linear pedestal design.

Int J Pediatr Otorhinolaryngol

Archie's Cochlear Implant Laboratory, Department of Otolaryngology, The Hospital for Sick Children, Toronto, Ontario, Canada; The Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada; Department of Otolaryngology - Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada.

Published: February 2017

Objective: To assess the safety and efficiency of cochlear implantation using a novel device with a linear silastic pedestal (2 mm wide, 2 mm deep, 10 mm long) on the flat undersurface.

Methods: Operative times required to drill a linear groove (LG) for the new linear pedestal design were prospectively accrued for 46 implantations in 30 children (median age 3). Intra-operative safety was assessed during each case. Instances of dural exposure in the base of the LG were noted. Length of stay was also recorded as a secondary measure of efficiency.

Results: Across all surgeons, the mean time needed to create the LG was 1.9 ± 1.5 min (±SD) with a median time of 1.5 min (95% Cl: 1-2 min). The range in time was 1-10 min. No intraoperative complications occurred. Intended device positioning was confirmed with on-table post-operative x-rays in all cases. 43% of patients were discharged on the day of surgery.

Conclusions: The novel linear pedestal design allows for deliberate device placement while adding little additional operative time and complexity, an improvement on our current standard of care.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ijporl.2016.12.006DOI Listing

Publication Analysis

Top Keywords

linear pedestal
12
pedestal design
12
novel linear
8
linear
5
preliminary experience
4
experience cochlear
4
cochlear implant
4
implant novel
4
pedestal
4
design objective
4

Similar Publications

Transmission matrix measurements of multimode fibers are now routinely performed in numerous laboratories, enabling control of the electric field at the distal end of the fiber and paving the way for the potential application to ultrathin medical endoscopes with high resolution. The same concepts are applicable to other areas, such as space division multiplexing, targeted power delivery, fiber laser performance, and the general study of the mode coupling properties of the fiber. However, the process of building an experimental setup and developing the supporting code to measure the fiber's transmission matrix remains challenging and time consuming, with full details on experimental design, data collection, and supporting algorithms spread over multiple papers or lacking in detail.

View Article and Find Full Text PDF

The pulsed- and steady-pedestal paradigms were designed to track increment thresholds (Δ) as a function of pedestal contrast (C) for the parvocellular (P) and magnocellular (M) systems, respectively. These paradigms produce contrasting results: linear relationships between Δ and are observed in the pulsed-pedestal paradigm, indicative of the P system's processing, while the steady-pedestal paradigm reveals nonlinear functions, characteristic of the M system's response. However, we recently found the P model fits better than the M model for both paradigms, using Gabor stimuli biased towards the M or P systems based on their sensitivity to color and spatial frequency.

View Article and Find Full Text PDF

Theoretically, the pulsed- and steady-pedestal paradigms are thought to track contrast-increment thresholds (ΔC) as a function of pedestal contrast (C) for the parvocellular (P) and magnocellular (M) systems, respectively, yielding linear ΔC versus C functions for the pulsed- and nonlinear functions for the steady-pedestal paradigm. A recent study utilizing these paradigms to isolate the P and M systems reported no evidence of the M system being suppressed by red light, contrary to previous physiological and psychophysical findings. Curious as to why this may have occurred, we examined how ΔC varies with C for the P and M systems using the pulsed- and steady-pedestal paradigms and stimuli biased towards the P or M systems based on their sensitivity to spatial frequency (SF) and color.

View Article and Find Full Text PDF

We demonstrate a unique pulse-splitting mechanism dominated by the linear coupling between two vector modes in a mode-locked fiber laser using polarization-maintaining fiber. As the linear coupling strength increases, the pulse experiences larger perturbations and manifests as stronger spectral sidebands. Correspondingly, the temporal pedestals possessing a higher intensity become untrapped and eventually evolve into a stable pulse.

View Article and Find Full Text PDF

In this study, a resonant single-wing bionic piezoelectric motor based on a biasing self-clamping mechanism inspired by dragonfly flight was designed, assembled, and tested. The main mechanism of the designed piezoelectric motor includes a mover (including a vibrator, clamping foot, bionic pedestal, etc.), a stator, and other auxiliary components.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!