keyword
MENU ▼
Read by QxMD icon Read
search

Middle ear implant

keyword
https://www.readbyqxmd.com/read/29161987/encoding-a-melody-using-only-temporal-information-for-cochlear-implant-and-normal-hearing-listeners
#1
Ann E Todd, Griet Mertens, Paul Van de Heyning, David M Landsberger
One way to provide pitch information to cochlear implant users is through amplitude-modulation rate. It is currently unknown whether amplitude-modulation rate can provide cochlear implant users with pitch information adequate for perceiving melodic information. In the present study, the notes of a song were encoded via amplitude-modulation rate of pulse trains on single electrodes at the apex or middle of long electrode arrays. The melody of the song was either physically correct or modified by compression or expansion...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/29158536/validation-of-methods-for-prediction-of-clinical-output-levels-of-active-middle-ear-implants-from-measurements-in-human-cadaveric-ears
#2
Martin Grossöhmichen, Bernd Waldmann, Rolf Salcher, Nils Prenzler, Thomas Lenarz, Hannes Maier
Today, the standard method to predict output levels of active middle ear implants (AMEIs) before clinical data are available is stapes vibration measurement in human cadaveric ears, according to ASTM standard F2504-05. Although this procedure is well established, the validity of the predicted output levels has never been demonstrated clinically. Furthermore, this procedure requires a mobile and visually accessible stapes and an AMEI stimulating the ossicular chain. Thus, an alternative method is needed to quantify the output level of AMEIs in all other stimulation modes, e...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29122427/transcanal-endoscopic-ear-surgery-for-perilymphatic-fistula-after-electric-acoustic-stimulation
#3
Ryotaro Omichi, Shin Kariya, Yukihide Maeda, Kazunori Nishizaki
Transcanal endoscopic ear surgery (TEES) will become a very useful therapeutic option. A perilymphatic fistula (PLF) is defined as sudden sensorineural hearing loss and/or vertigo caused by leakage of the perilymph through a fistula from the oval window and/or round window. We report a case of PLF after electric acoustic stimulation (EAS), a kind of cochlear implant, successfully treated by TEES. A 38-year-old man presented to our hospital with vertigo and hearing loss (HL). His vertigo was induced by Valsalva maneuvers...
November 6, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/29099047/concept-and-evaluation-of-a-new-piezoelectric-transducer-for-an-implantable-middle-ear-hearing-device
#4
Houguang Liu, Jinlei Cheng, Jianhua Yang, Zhushi Rao, Gang Cheng, Shanguo Yang, Xinsheng Huang, Mengli Wang
Implantable middle ear hearing devices (IMEHDs) have been developed as a new technology to overcome the limitations of conventional hearing aids. The piezoelectric cantilever transducers currently used in the IMEHDs have the advantages of low power consumption and ease of fabrication, but generate less high-frequency output. To address this problem, we proposed and designed a new piezoelectric transducer based on a piezoelectric stack for the IMEHD. This new transducer, attached to the incus body with a coupling rod, stimulates the ossicular chain in response to the expansion-and-contraction of its piezoelectric stack...
November 2, 2017: Sensors
https://www.readbyqxmd.com/read/29097036/-techniques-and-progress-in-the-imaging-of-the-ear
#5
Antoine Garin, Farida Benoudiba, Denis Ducreux
Ear and temporal bone imaging is essential for the diagnostic and preoperative management of middle ear lesions. The scanner is the exam of choice to analyze the walls and the contents of the middle ear. MRI is used to characterize the opacities of the middle ear and to evaluate possible neurological complications. Modern imaging techniques allow intraoperative guidance in otological surgery. Hearing implants are not always a contraindication to MRI but require precautions according to the type of implant.
October 30, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/29097034/-medical-devices-correcting-the-deafness-hearing-aids-and-auditory-implants
#6
Jérôme Nevoux, Arnaud Coez, Éric Truy
The management of deafness has become a major public health issue as their lack of detection has a deleterious effect in children and increases the risk factors for aggravation of other pathologies in adults. The detection of deafness remains a real challenge: in the newborn, systematic screening at birth is a good strategy, in adults, much remains to be done. The functional rehabilitation of deafness is based on the use of hearing aids by aerial or bone conduction or of auditory implants. There are three types of auditory implants available: bone anchored hearing implants, middle ear implants and cochlear implants...
October 30, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/29095298/sudden-onset-of-static-equilibrium-dysfunction-in-patients-receiving-a-cochlear-implant
#7
Ying Gao, Qing Zhang, Jing Yan, Xiaorong Niu, Peng Han, Haifeng Yuan, Juan Hu, Bo Liu, Min Xu
BACKGROUND: We investigated the sudden onset of static equilibrium dysfunction caused by cochlear implantation (CI) in congenital hearing loss patients. METHOD: Twenty-five patients were selected from a cohort of unilateral CI recipients to form the CI group. Static posturography was performed 1 to 3 days before and 3 to 5 days after CI. Each patient underwent the test with eyes open (EO) and eyes closed (EC) for 30 seconds, separately. Another group of age- and sex-matched patients with no history of hearing impairment undergoing unrelated surgeries formed the control group, and were examined with the same tests pre- and post-surgery...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29072657/-the-influence-of-biological-compatibility-of-the-cyanoacrylate-glue-on-regeneration-of-the-cartilaginous-tissue
#8
F V Semenov, N F Skibitskaya
The objective of the present study was to evaluate the possibility of the application of the cyanoacrylate-based glue for the strengthening of the reconstructed elements of the middle ear and its influence on the regeneration of the cartilaginous tissue. We used the cartilaginous tissue from the auricles of the male California rabbits as a model. The cartilage was destroyed in a standard press. Half of the cartilage thus fragmented was implanted into the left auricle. The remaining part was mixed up with the cyanoacrylate glue and implanted into the right auricle of the same animal...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29054109/influence-of-backside-loading-on-the-floating-mass-transducer-an-in-vitro-experimental-study
#9
Antoniu-Oreste Gostian, Martin Sylvester Otte, David Pazen, Magdalene Ortmann, David Schwarz, Karl Bernd Hüttenbrink, Dirk Beutner
HYPOTHESIS: The vibration of the floating mass transducer (FMT) of a single active middle-ear implant (AMEI) is distinctly influenced by the properties of the material coupled to its back side. BACKGROUND: In round window vibroplasty, the FMT needs to be padded against the surrounding bone opposite from the round window membrane. This represents one factor influencing its performance as a round window driver. Therefore, we examined the effects of different materials linked to the back side of an FMT on its vibration range...
October 20, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29038860/the-role-of-subtotal-petrosectomy-in-cochlear-implant-recipients
#10
Xabier Altuna, Leire García, Zuriñe Martínez, Mercedes Fernández de Pinedo
Describe the indications and outcome of subtotal petrosectomy for cochlear implant recipients. Tertiary care referral center. This is a retrospective study of all subtotal petrosectomies and cochlear implants performed between January 2012 and December 2014. We review the charts of these patients collecting the following data: age, gender, otologic history, audiologic tests, indication of subtotal petrosectomy, data of surgery, surgical and immediate complications, late complications and follow-up of for at least 2...
December 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29017231/-long-term-follow-up-and-patient-satisfaction-after-tympanoplasty-with-titanium-clip-prothesis
#11
Guido Wolferts, Daniel Schicke, K-Wolfgang Delank
Aim of the present study is to evaluate the long term results of ossiculoplasty using titanium clip prosthesis. A retrospective analysis with prospective follow-up has been done including for all patients who had a Clip-PORP implanted between the years 2002-2013. Following this, audiometric hearing results were measured with clinical examination including otoscopy and quality of life evaluation using Glasgow benefit inventory. 48 patients (51 ears, 29 men, 19 women, average age 44.1 years) received followed up after an average duration of 6...
October 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28988445/effect-of-cochlear-implantation-on-middle-ear-function-a-three-month-prospective-study
#12
Joseph D Wasson, Luke Campbell, Scott Chambers, Amy Hampson, Robert J S Briggs, Stephen J O'Leary
OBJECTIVES/HYPOTHESIS: To determine if cochlear implantation has a delayed effect on the middle ear conductive hearing mechanism by measuring laser Doppler vibrometry (LDV) of the tympanic membrane (TM) in both implanted and contralateral control ears preoperatively and 3 months postoperatively, and then comparing the relative change in LDV outcome measures between implanted and control ears. STUDY DESIGN: Prospective cohort study. METHODS: Eleven preoperative adult unilateral cochlear implant recipients in previously unoperated ears with normal anatomy and aerated temporal bones were included in this study...
October 8, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28964441/cost-utility-of-partially-implantable-active-middle-ear-implants-for-sensorineural-hearing-loss-a-decision-analysis
#13
Melodi Kosaner Kliess, Martina Kluibenschaedl, Ruth Zoehrer, Bettina Schlick, Francesca Scandurra, Michael Urban
BACKGROUND: Partially implantable active middle ear implants (aMEIs) offer a solution for individuals who have mild to severe sensorineural hearing loss and an outer ear medical condition that precludes the use of hearing aids. When otherwise left untreated, individuals report a lower quality of life, which may further decrease with increasing disability. In the lack of cost-effectiveness studies and long-term data, there is a need for decision modeling. OBJECTIVE: To explore individual-level variance in resource utilization patterns following aMEI implantation...
September 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28964300/anatomical-measurement-of-the-ossicles-in-patients-with-congenital-aural-atresia-and-stenosis
#14
Jieying Li, Keguang Chen, Chenlong Li, Dongming Yin, Tianyu Zhang, Peidong Dai
OBJECTIVES: Our aims were to measure and compare anatomical parameters of the ossicles in normal, congenital aural stenosis (CAS), and congenital aural atresia (CAA) ears. METHODS: This retrospective study was performed using three-dimensional reconstructed images derived from computed tomography scans of 20 normal subjects, 20 CAS patients, and 20 CAA patients. RESULTS: The lengths of the malleus handle and long process of the incus were greater in normal ears than in CAS and CAA ears (all P < 0...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28933573/relationship-between-pure-tone-audiogram-findings-and-speech-perception-among-older-japanese-persons
#15
Yukihide Maeda, Soshi Takao, Akiko Sugaya, Yuko Kataoka, Shin Kariya, Satomi Tanaka, Rie Nagayasu, Atsuko Nakagawa, Kazunori Nishizaki
OBJECTIVE: To clarify how the pure-tone threshold (PTT) on the PTA predicts speech perception (SP) in elderly Japanese persons. METHODS: Data on PTT and SP were cross-sectionally analyzed in Japanese persons (656 ears in 353 patients, aged ≥65 years). Correlations of SP and average PTT in all tested frequencies were evaluated by Pearson's correlation coefficient and simple linear regression. After adjusting for sex, laterality of ears, and age, the relationship of average and frequency-specific PTT with impaired SP ≤50% was estimated by logistic regression models...
September 21, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28932983/prevention-and-management-of-vascular-complications-in-middle-ear-and-cochlear-implant-surgery
#16
Filippo Di Lella, Maurizio Falcioni, Silvia Piccinini, Ilaria Iaccarino, Andrea Bacciu, Enrico Pasanisi, Davide Cerasti, Vincenzo Vincenti
The objective of this study is to illustrate prevention strategies and management of vascular complications from the jugular bulb (JB) and internal carotid artery (ICA) during middle ear surgery or cochlear implantation. The study design is retrospective case series. The setting is tertiary referral university hospital. Patients were included if presented pre- or intraoperative evidence of high-risk anatomical anomalies of ICA or JB during middle ear or cochlear implant surgery, intraoperative vascular injury, or revision surgery after the previous iatrogenic vascular lesions...
November 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28889786/implantable-microphones-as-an-alternative-to-external-microphones-for-cochlear-implants
#17
Alistair Mitchell-Innes, Robert Morse, Richard Irving, Philip Begg
Totally implantable cochlear implants may be able to address many of the problems cochlear implant users have around cosmetic appearances, discomfort, and restriction of activities. The major technological challenges that need to be solved to develop a totally implantable device relate to implanted microphone performance. Previous attempts at implanting microphones for cochlear implants have not performed as well as conventional cochlear implant microphones, and in addition have struggled with extraneous body or surface contact noise...
September 11, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28885481/comparison-of-an-electromagnetic-middle-ear-implant-and-hearing-aid-word-recognition-performance-to-word-recognition-performance-obtained-under-earphones
#18
C Y Joseph Chang, Michael Spearman, Brian Spearman, Anna McCraney, Michael E Glasscock
OBJECTIVE: To report the results of patients with the Maxum middle ear implant (MEI) and compare word recognition scores (WRS) and speech perception gap (SP Gap) of Maxum versus optimally fit hearing aids (HA). STUDY DESIGN: Case series with chart review. SETTING: Single, private otology clinic. PATIENTS: Eleven ears, in nine adult patients (two women; average age 62.7 yr). INTERVENTIONS: Twelve consecutive ears with moderate to severe sensorineural hearing loss (SNHL) underwent implantation of the Maxum system...
October 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28869639/analysis-of-the-influence-of-the-transducer-and-its-coupling-layer-on-round-window-stimulation
#19
Houguang Liu, Dan Xu, Jianhua Yang, Shanguo Yang, Gang Cheng, Xinsheng Huang
PURPOSE: In this work, a finite element study is proposed to evaluate the effects of the transducer and its coupling layer on the performance of round window (RW) stimulation. METHODS: Based on a set of micro-computer tomography images of a healthy adult's right ear and reverse engineering technique, a coupled finite-element model of the human ear and the transducer was constructed and verified. Then, the effect of the cross-section of the transducer, the elastic modulus of the coupling layer, the mass of the transducer, and the preload of the transducer were studied...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28854835/a-new-semi-implantable-middle-ear-implant-for-sensorineural-hearing-loss-three-years-follow-up-in-a-pilot-patient-s-group
#20
Maurizio Barbara, Luigi Volpini, Chiara Filippi, Francesca Atturo, Simonetta Monini
OBJECTIVE: The aim of this article is to report on the long-term follow-up of a new semi-implantable middle ear device utilized for restoration of moderate-to-severe sensorineural hearing loss in a first series of subjects. METHODS: Three subjects, affected by sensorineural hearing loss, have undergone implantation of Maxum(®) middle ear implant, via a transcanal approach. They all underwent an auditory assessment, paying particular attention on the pre- versus post-operative hearing levels under the unaided, best-fitted hearing aided and implant-aided conditions...
August 30, 2017: Acta Oto-laryngologica
keyword
keyword
46701
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"