Cardiac assist devices are classified into the traditional engineering categories of displacement and rotary pumps. Clinical use and indications of the various pump categories are outlined and a detailed description of the currently available systems is given. The first section deals with extracorporeal as well as implantable ventricular assist devices of the displacement type and is followed by a section on current developments in the field of total artificial hearts. The latter part of the article covers the rotary pump category from cardiopulmonary bypass applications to implantable systems, including specific design aspects of radial, diagonal and axial pumps.
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http://dx.doi.org/10.1586/17434440.1.2.215 | DOI Listing |
PLoS One
January 2025
Deptartment of Speech, Language, and Hearing Sciences, University of Colorado, Boulder, Colorado, United States of America.
Binaural speech intelligibility in rooms is a complex process that is affected by many factors including room acoustics, hearing loss, and hearing aid (HA) signal processing. Intelligibility is evaluated in this paper for a simulated room combined with a simulated hearing aid. The test conditions comprise three spatial configurations of the speech and noise sources, simulated anechoic and concert hall acoustics, three amounts of multitalker babble interference, the hearing status of the listeners, and three degrees of simulated HA processing provided to compensate for the noise and/or hearing loss.
View Article and Find Full Text PDFLangenbecks Arch Surg
January 2025
Department of Chemical Science & Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan.
Purpose: We aimed to develop a novel fluorescent surgical gauze dyed with indocyanine green (ICG) to guide surgeons to the target anatomical destination during surgery for real-time navigation and to prevent gauze remnants after surgery.
Methods: Surgical gauze was dyed with an aqueous solution of ICG (5.0 × 10 mol L for Steraze, 1.
Langenbecks Arch Surg
January 2025
Department for the Promotion of Medical Device Innovation, National Cancer Center Hospital East, 6-5-1, Kashiwanoha, Kashiwa, Chiba, 277-8577, Japan.
Purpose: Assessing surgical skills is vital for training surgeons, but creating objective, automated evaluation systems is challenging, especially in robotic surgery. Surgical procedures generally involve dissection and exposure (D/E), and their duration and proportion can be used for skill assessment. This study aimed to develop an AI model to acquire D/E parameters in robot-assisted radical prostatectomy (RARP) and verify if these parameters could distinguish between novice and expert surgeons.
View Article and Find Full Text PDFIntroduction: Robotic surgery has revolutionized surgical practice globally since the first Da Vinci device was launched in 2000. Adoption in Spain has been more moderate than in other countries, especially in the field of pediatric surgery, which represents less than 0.5% of all robotic procedures.
View Article and Find Full Text PDFAesthet Surg J
January 2025
Careggi University Hospital, Florence, Italy.
Background: Preservation rhinoplasty, particularly dorsal preservation, has gained prominence with the advent of piezoelectric instruments, which minimize trauma and enhance precision in bone reshaping. This approach presents unique challenges, especially in closed techniques, where spatial limitations complicate the use of piezotomes.
Objectives: To evaluate outcomes of piezo-assisted preservation rhinoplasty using specialized instrumentation to enhance visibility, precision, and postoperative recovery in closed rhinoplasty procedures.
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