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Heart, Artificial definition: A pumping mechanism that duplicates the output, rate, and blood pressure of the natural heart. It may replace the function of the entire heart or a portion of it, and may be an intracorporeal, extracorporeal, or paracorporeal heart. (Dorland, 28th ed)
heart prosthesis definition: pumping mechanism that duplicates the output, rate, and blood pressure of the natural heart; may replace the function of the entire heart or a portion of it, and may be an intracorporeal, extracorporeal, or paracorporeal heart.
Prostheses, Heart definition: Prostheses designed for total replacement of the biological natural heart. These devices typically consist of an implantable mechanism that includes one or more pumps, valves, cannulae, and a power source. Heart prostheses are used to provide blood circulation to patients with a debilitated or completely failed heart. Some devices are designed for implantation of the pumping mechanism with a physical connection to an external power source (e.g., electrical, pneumatic), and others are totally implantable but may need a wireless, transcutaneous transmission of power from an external source. Percutaneously powered prostheses are mostly intended for temporary use before a heart transplant is possible; transcutaneously powered heart prostheses are intended for permanent use.
Jaundice, Obstructive definition: JAUNDICE, the condition with yellowish staining of the skin and mucous membranes, that is due to impaired BILE flow in the BILIARY TRACT, such as INTRAHEPATIC CHOLESTASIS, or EXTRAHEPATIC CHOLESTASIS.
Stress, Mechanical definition: A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
mechanical stress definition: physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion.
Suction definition: The removal of secretions, gas or fluid from hollow or tubular organs or cavities by means of a tube and a device that acts on negative pressure.
Ventilators, Mechanical definition: Mechanical devices used to produce or assist pulmonary ventilation.
respirator definition: device used to produce or assist pulmonary ventilation.
Respirators definition: Devices designed to provide respiratory protection. They may prevent the device wearer from inhaling dangerous particles, gases, and/or vapors from the environment. Respirators may be designed to remove particles (e.g., dusts, mists, some bacteria), gases/vapors, or both; typically, the user can attach the respirator to his/her face without help from another person. Some devices filter the ambient air before it reaches the respirator user; others supply clean air directly from a source different than the surrounding air. Respirators are mostly used in emergency situations to protect people from inhalation of bacteria, contaminated particulates, and gases and/or vapors from chemical spills.
Balances, Mechanical definition: Balances designed to weigh by restoring the deviation of the balance beam to the equilibrium point by applying a mechanical force.
BED, MANUAL definition: A manual adjustable hospital bed is a device intended for medical purposes that consists of a bed with a manual mechanism operated by an attendant to adjust the height and surface contour of the bed. The device includes movable and latchable side rails.
Beds, Mechanical definition: Beds with one or more mechanical manual crank handles or other controls that can be operated by the staff to adjust the bed surface, contour, or both. In most adjustable mechanical beds, the mattress support is divided in three or more pivoted sections that are height adjustable and can assume the Gatch positionor the Fowler position (head and knees elevated) or tilt to Trendelenburg and reverse Trendelenburg positions (body straight; feet elevated or lowered, respectively). These beds are designed for use in recuperation or treatment. Most electric beds include movable and latchable siderails. Some beds may incorporate fixed endrails or a fabric framed canopy.
Wheelchairs, Mechanical definition: Wheelchairs that are user propelled and/or attendant operated (i.e., nonpowered, mechanical, manually-operated).
WHEELCHAIR, MECHANICAL definition: A mechanical wheelchair is a manually operated device with wheels that is intended for medical purposes to provide mobility to persons restricted to a sitting position.
Mechanical Ventilation definition: A method to mechanically assist or replace spontaneous breathing in patients by use of a powered device that forces oxygenated air into the lungs.
Torsion, Mechanical definition: A twisting deformation of a solid body about an axis. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Shields, Mechanical definition: Shields used for protection from mechanical agents.
Stimulators, Mechanical definition: Stimulators that apply mechanical stimuli (e.g., force, pressure) to the patient. Most of these stimulators are used to elicit a measurable response for diagnostic, monitoring, or therapeutic purposes.
Telemanipulation Systems definition: Systems designed for handling objects without physical contact of a human operator with the manipulator (often referred to as "robotic" systems). Most systems are based on control (i.e., master) arms operated by a person and working (i.e., slave) manipulators that guide a set of instruments to perform the intended task (master-slave system). These systems typically consist of robotic arms used as manipulators; a workstation including the control arms, computerized processing units, and visual displays; visual, auditory, and tactile transducers; and appropriate links between the manipulators and the workstation. Telemanipulation systems are mostly used to move hazardous (e.g., radioactive) materials and objects in difficult access places; they are also used for surgical purposes.
Dermatomes, Manual definition: Dermatomes designed to harvest large, uniform-thickness skin grafts using manual (mechanical) procedures. These dermatomes are manually operated, handheld frames with an attached cutting blade or, more frequently, a drum with an oscillating blade that is manually operated as the drum rolls over the skin. Several models of manual dermatomes are available, including Reese and Padgett-Hood drum dermatomes. Manual dermatomes are used mainly to obtain skin grafts from donor sites, but they are sometimes used in other procedures (e.g., to remove tattoos).
Mechanical jam definition: Issue associated with a problem that prevents or restricts the motion of the device or its components.
Mechanical issue definition: Issues associated with any deviations from device documented performance specifications relating to mechanical defects, including moving parts or subassemblies, etc.
Mechanical Phenomena definition: The properties and processes of materials that affect their behavior under force.
Mechanical Processes definition: The behaviors of materials under force.
mechanical milker definition: [1] Melkmaschine
Mechatroniker definition: [1] ein Ausbildungsberuf, der die Berufe Industriemechaniker, Elektriker und Programmierer vereint
Melkmaschine definition: [1] Gerät, das automatisch melken kann
Maschinenbau definition: [1] Ingenieurwissenschaft, die sich mit der Analyse, dem Entwurf, Bau und der Wartung von Maschinen und mechanischen Systemen befasst [2] kurz für Maschinenbauindustrie oder Maschinenbaubranche
mécanique definition: Branche de la physique concernant le mouvement des corps solides.
mécanique definition: Branche de l’ingénierie en rapport avec la génération de mouvement automatique par la fabrication des machines à vapeur, des moteurs ou autres automates.
mécanique definition: Mécanisme de fonctionnement de tout corps.