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Bone Anchored Hearing Aid
A bone-anchored hearing aid (BAHA) is a type of hearing aid based on bone conduction. It is primarily suited for people who have conductive hearing losses, unilateral hearing loss, single-sided deafness and people with mixed hearing losses who cannot otherwise wear 'in the ear' or 'behind the ear' hearing aids. They are more expensive than conventional hearing aids, and their placement involves invasive surgery which carries a risk of complications, although when complications do occur, they are usually minor. Two of the causes of hearing loss are lack of function in the inner ear (cochlea) and when the sound has problems in reaching the nerve cells of the inner ear. Examples of the first include age-related hearing loss and hearing loss due to noise exposure. A patient born without external ear canals is an example of the latter for which a conventional hearing aid with a mould in the ear canal opening would not be effective. Some with this condition have normal inner ear func ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearing Aid
A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations. Small audio amplifiers such as personal sound amplification products (PSAPs) or other plain sound reinforcing systems cannot be sold as "hearing aids". Early devices, such as ear trumpets or ear horns, were passive amplification cones designed to gather sound energy and direct it into the ear canal. Modern devices are computerised electroacoustic systems that transform environmental sound to make it audible, according to audiometrical and cognitive rules. Modern devices also utilize sophisticated digital signal processing to try and improve speech intelligibility and comfort for the user. Such signal processing includes feedback management, wide dynamic range compression, directionality, frequency lowering, and noise reduction. Modern hearing aids require ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Down Syndrome
Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is usually associated with physical growth delays, mild to moderate intellectual disability, and characteristic facial features. The average IQ of a young adult with Down syndrome is 50, equivalent to the mental ability of an eight- or nine-year-old child, but this can vary widely. The parents of the affected individual are usually genetically normal. The probability increases from less than 0.1% in 20-year-old mothers to 3% in those of age 45. The extra chromosome is believed to occur by chance, with no known behavioral activity or environmental factor that changes the probability. Down syndrome can be identified during pregnancy by prenatal screening followed by diagnostic testing or after birth by direct observation and genetic testing. Since the introduction of screening, Down syndrome pregnancies are often a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone Conduction
Bone conduction is the conduction of sound to the inner ear primarily through the bones of the skull, allowing the hearer to perceive audio content without blocking the ear canal. Bone conduction transmission occurs constantly as sound waves vibrate bone, specifically the bones in the skull, although it is hard for the average individual to distinguish sound being conveyed through the bone as opposed to the sound being conveyed through the air via the ear canal. Intentional transmission of sound through bone can be used with individuals with normal hearing — as with bone-conduction headphones — or as a treatment option for certain types of hearing impairment. Bone generally conveys lower-frequency sounds better than higher frequency sounds. Overview Bone conduction is one reason why a person's voice sounds different to them when it is recorded and played back. Because the skull conducts lower frequencies better than air, people perceive their own voices to be lower an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oticon
Oticon is a hearing aid manufacturer based in Copenhagen, Denmark. The company is a subsidiary of the Demant Group. It was founded in 1904 by Hans Demant, whose wife was hearing impaired. The company claims to be the world's second-largest manufacturer of hearing aids, and uses a management style known as "spaghetti organization" introduced by Lars Kolind under his leadership between 1988 and 1998. Oticon has branches in several countries, including a production plant in Poland, with more than 3,000 employees worldwide. In 2016, Oticon launched what they claim to be the world's first internet-connected hearing aid, called the Oticon Opn. The company employs an "open sound" approach designed to manage multiple speech and noise sources, even in complex listening situations. The company says the new OpenSound Navigator scans the environment 100 times per second to analyze and balance every sound individually. Environmental sounds are said to be accessible, but not disturbing. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cochlear Limited
Cochlear is a medical device company that designs, manufactures, and supplies the Nucleus cochlear implant, the Hybrid electro-acoustic implant and the Baha bone conduction implant. Based in Sydney, Cochlear was formed in 1983 as a subsidiary of Nucleus with finance from the Australian government to commercialise the implants pioneered by Dr. Graeme Clark, although the company later became separate. As of 2022, the company holds 50% of the cochlear implant market, with more than 250,000 people receiving one of Cochlear's implants as of 2015. Cochlear was named Australia's most innovative company by the Intellectual Property Research Institute of Australia in 2002 and 2003, and one of the world's most innovative companies by '' Forbes'' in 2011. History Corporate affairs Cochlear was originally founded in 1983 as a subsidiary of Nucleus, a medical electronics company founded in 1964. Previously in 1981 Nucleus received a grant from the Australian government to commerc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osseointegration
Osseointegration (from Latin ''osseus'' " bony" and ''integrare'' "to make whole") is the direct structural and functional connection between living bone and the surface of a load-bearing artificial implant ("load-bearing" as defined by Albrektsson et al. in 1981). A more recent definition (by Schroeder et al.) defines osseointegration as "functional ankylosis (bone adherence)", where new bone is laid down directly on the implant surface and the implant exhibits mechanical stability (i.e., resistance to destabilization by mechanical agitation or shear forces). Osseointegration has enhanced the science of medical bone and joint replacement techniques as well as dental implants and improving prosthetics for amputees. Definitions Osseointegration is also defined as: "the formation of a direct interface between an implant and bone, without intervening soft tissue". An osseointegrated implant is a type of implant defined as "an endosteal implant containing pores into which osteo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sahlgrenska University Hospital
The Sahlgrenska University Hospital ( Swedish: ''Sahlgrenska Universitetssjukhuset'') is a hospital network associated with the Sahlgrenska Academy at the University of Gothenburg in Gothenburg, Sweden. With 17,000 employees the hospital is the largest hospital in Sweden by a considerable margin, and the second largest hospital in Europe. It has 2,000 beds distributed across three campuses in Sahlgrenska, Östra, and Mölndal. It provides emergency and basic care for the 700,000 inhabitants of the Göteborg region and offers highly specialised care for the 1.7 million inhabitants of West Sweden. It is named after philanthropist Niclas Sahlgren. History Sahlgrenska University Hospital was formed in 1997 by the merger of three hospitals: Sahlgrenska Hospital, Östra Hospital, and Mölndal Hospital. The Sahlgrenska University Hospital has been operated by the Västra Götaland Regional Council since its formation in 1999. The Sahlgrenska Academy Sahlgrenska Academy is the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baha Implant In Hand
Baha (also transliterated as Bahaa, ar, بهاء) may refer to: People * Baha (name) Places *Al Bahah, a city in Saudi Arabia Trademark * Cochlear Baha, a hearing aid manufactured by Cochlear Title * Al-Muqtana Baha'uddin (979–1043), Druze religious leader * Bahá'u'lláh (1817–1892), religious leader of a world religion from Iran See also *Baháʼí Faith, a religion *BAHA (other) Baha (also transliterated as Bahaa, ar, بهاء) may refer to: People * Baha (name) Places *Al Bahah, a city in Saudi Arabia Trademark * Cochlear Baha, a hearing aid manufactured by Cochlear Title * Al-Muqtana Baha'uddin (979–1043), Druze ... * Baja (other) {{Disambiguation, geo, surname Arabic-language surnames Arabic masculine given names Turkish masculine given names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hematoma
A hematoma, also spelled haematoma, or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery and may involve blood continuing to seep from broken capillaries. A hematoma is benign and is initially in liquid form spread among the tissues including in sacs between tissues where it may coagulate and solidify before blood is reabsorbed into blood vessels. An ecchymosis is a hematoma of the skin larger than 10 mm. They may occur among and or within many areas such as skin and other organs, connective tissues, bone, joints and muscle. A collection of blood (or even a hemorrhage) may be aggravated by anticoagulant medication (blood thinner). Blood seepage and collection of blood may occur if heparin is given via an intramuscular route; to avoid this, heparin must be given intravenously or subcutaneously. Signs and symptoms Some hematomas are visible under the surface of the skin (commonly called bruises ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necrosis
Necrosis () is a form of cell injury which results in the premature death of cells in living tissue by autolysis. Necrosis is caused by factors external to the cell or tissue, such as infection, or trauma which result in the unregulated digestion of cell components. In contrast, apoptosis is a naturally occurring programmed and targeted cause of cellular death. While apoptosis often provides beneficial effects to the organism, necrosis is almost always detrimental and can be fatal. Cellular death due to necrosis does not follow the apoptotic signal transduction pathway, but rather various receptors are activated and result in the loss of cell membrane integrity and an uncontrolled release of products of cell death into the extracellular space. This initiates in the surrounding tissue an inflammatory response, which attracts leukocytes and nearby phagocytes which eliminate the dead cells by phagocytosis. However, microbial damaging substances released by leukocytes would cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soft Tissue
Soft tissue is all the tissue in the body that is not hardened by the processes of ossification or calcification such as bones and teeth. Soft tissue connects, surrounds or supports internal organs and bones, and includes muscle, tendons, ligaments, fat, fibrous tissue, lymph and blood vessels, fasciae, and synovial membranes. with :q=a_E_E_ \qquad Q=b_E_E_ quadratic forms of Green-Lagrange strains E_ and a_, b_ and c material constants. W is the strain energy function per volume unit, which is the mechanical strain energy for a given temperature. Isotropic simplification The Fung-model, simplified with isotropic hypothesis (same mechanical properties in all directions). This written in respect of the principal stretches (\lambda_i): :W = \frac\left (\lambda_1^2 + \lambda_2^2 + \lambda_3^2 - 3) + b\left( e^ -1 \right) \right/math> , where a, b and c are constants. Simplification for small and big stretches For small strains, the exponential term is very small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food And Drug Administration
The United States Food and Drug Administration (FDA or US FDA) is a federal agency of the Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, caffeine products, dietary supplements, prescription and over-the-counter pharmaceutical drugs (medications), vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices (ERED), cosmetics, animal foods & feed and veterinary products. The FDA's primary focus is enforcement of the Federal Food, Drug, and Cosmetic Act (FD&C), but the agency also enforces other laws, notably Section 361 of the Public Health Service Act, as well as associated regulations. Much of this regulatory-enforcement work is not directly related to food or drugs, but involves such things as regulating lasers, cellular phones, and condoms, as well as control of disease in contexts var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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