#medical device

• Adaptometer — A laboratory apparatus used in ophthalmology and physiology to measure the speed and capacity of the eye to adapt to darkness or sudden variations in light intensity. The device projects precisely controlled light stimuli, enabling the determination of the retinal adaptation curve and the diagnosis of night blindness or other photoreceptor cell dysfunctions.
• Aerplethysmograph — A high-precision medical device used to measure and record volume variations of air in the lungs or respiratory gas flows during different phases of ventilation. The device functions structurally based on pressure changes inside a sealed cabin, providing essential clinical data for diagnosing obstructive or restrictive pulmonary disorders.
• Algometer — An apparatus, device, or medical instrument used in neurology, rheumatology, and experimental physiology to accurately measure a patient's pain sensitivity or tolerance threshold. The device operates by applying calibrated mechanical, thermal, or electrical stimuli onto a specific area of the body.
• Alloplasty — A general surgical method or technique whereby substance defects, tissue losses, or compromised organs are corrected, prosthetized, or replaced by introducing inert foreign materials of a non-biological nature into the organism. This structural concept encompasses all operations involving the implantation of prostheses (joint, valvular) and inert synthetic grafts.
• Anesthesimeter — A precision apparatus, device, or technical instrument used in anesthesia and intensive care to measure, dose, or monitor the amount of volatile or gaseous anesthetic substance administered to a patient. This structural instrument ensures rigorous control over the concentration of the respiratory mixture in the circuit, guaranteeing that narcosis is maintained within optimal clinical safety limits.
• Anesthesimeter — A precision apparatus, device, or technical instrument used in anesthesia and intensive care to measure, dose, or monitor the amount of volatile or gaseous anesthetic substance administered to a patient. This structural instrument ensures rigorous control over the concentration of the respiratory mixture in the circuit, guaranteeing that narcosis is maintained within optimal clinical safety limits.
• Angiocheiloscope — A specialized optical device or medical apparatus used in stomatology, dermatology, and microcirculation for the direct, magnified, and structural examination of the capillary vessels within the lips. This niche instrument integrates advanced cold lighting systems and microscopic lenses, allowing clinicians to analyze circulatory flow, vascular wall modifications, and capillary architecture in various systemic pathologies.
• Angioscope — An ultrafine medical optical instrument or specialized endoscope introduced inside the circulatory system for the direct, magnified, and structural visualization of the vascular lumen and endothelial surface. This complex niche device integrates advanced flexible fiber optic and cold lighting systems, allowing surgeons to inspect atheromatous plaques, thrombi, or suture quality during interventional cardiovascular procedures.
• Angiotribe — A heavy metallic surgical instrument shaped like a robust clamp, equipped with powerful, serrated jaws used to perform angiotripsy. This complex niche device exerts an extremely high and well-defined mechanical pressure on the wall of a severed blood vessel, aiming to crush the intima and media to trigger hemostasis through the rapid formation of a natural clot, thereby eliminating the need for thread ligatures during operations.
• Antroscope — An endoscopic medical instrument, rigid or flexible, equipped with an optical illumination and lenticular visualization system, used for the direct clinical examination and diagnosis of anatomical cavities, specifically the maxillary sinus (antrum of Highmore); a precision optical device introduced through the nasal meatus to investigate the state of the sinus mucosa.
• Anoscope — A tubular, rigid medical instrument made of metal or sterile plastic, equipped with a local illumination system; it is used in the direct clinical examination of the anal canal and the lower rectum to identify hemorrhoids or fissures.
• Arteriograph — A high-precision medical device used in radiology and cardiology to graphically record arterial pulsations or to visualize and photograph the lumen of arteries using X-rays, following the injection of a contrast medium. Additionally, in modern medicine, the term can also refer to non-invasive devices that measure arterial stiffness and pulse wave velocity to assess a patient's global cardiovascular risk.
• Arteriometer — A medical apparatus or instrument used to measure the caliber, outer diameter, or degree of structural expansion of an artery during blood pulsations. This diagnostic device helps evaluate arterial elasticity and determine early vascular stiffness associated with degenerative or atherosclerotic processes.
• Arthroscope — A high-precision rigid or flexible endoscopic medical device, equipped with a miniature optical lens system, a fiber-optic light source, and a high-performance video camera, designed to be inserted into a joint cavity through a microscopic incision. This surgical instrument allows orthopedic surgeons to directly examine, diagnose, and perform minimally invasive treatment on joint pathologies (such as meniscus or ligament tears), significantly reducing the patient's postoperative recovery time.
• Audiometer — An electroacoustic high-precision device used in medicine and audiology to measure hearing acuity and determine the threshold of sound perception. The apparatus generates reference sound signals with strictly controlled frequencies and intensities transmitted via specialized headphones, allowing the practitioner to map out hearing loss.
• Auto-injector — A pre-filled medical device equipped with an automated spring-loaded mechanism, designed to allow patients or untrained personnel to rapidly self-administer a precise, pre-measured dose of medication via intramuscular or subcutaneous injection. It is primarily utilized in critical emergencies, such as administering epinephrine for anaphylactic shock or antidotes following exposure to nerve agents.