REQUIREMENTS TO MATERIALS FOR MANUFACTURING OF MEDICAL PRODUCTS. For manufacturing of medical tools, devices, equipment and so forth use set of materials: - Threw also their alloys; - Plastic weights; - Rubber; - Glass; - Ceramics; - A skin and its substitutes; - Wood, etc.
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REQUIREMENTS TO MATERIALS FOR MANUFACTURING OF MEDICAL PRODUCTS
Distinguish such properties of materials:
To the technological refer to properties which allow to define, to what technological machining there can be submitted a material, and also possibility of its most effective use at manufacturing of products.
It first of all:
Physical properties of materials are defined by such basic parametres:
FERROUS METALS AND THEIR ALLOYS
Nonferrous metals and nonferrous alloys are not based on iron and include metals and alloys of aluminum, brass, bronze, copper, lead, tin, titanium, zinc, nickel, cobalt, tungsten, molybdenum, magnesium, precious metals, refractory metals. They are used in a variety of applications from construction to medical devices. A nonferrous alloy consists of two or more materials, one of which must be a nonferrous metal. Many nonferrous metals can be used in alloys and are chosen for specific characteristics such as strength, magnetic and electrical properties, and corrosion resistance.
All medical tools which apply in medical practice are classified on:
Syringes are generally classified as Luer-Lok or non-Luer-Lok syringes. This classification is based on the type of syringe tip. Luer-Lok syringes have tips that require needles that can be twisted and locked into place. This design prevents the needle from accidentally slipping off the syringe. Non-Luer-Lok syringes have tips that require needles that can be pressed on to the tip of the syringe without being twisted into place.
Device of Bobrov is intended for injections of great volumes isotonic or physical solutions. Consists of the glass graduated banks on 500 or 1000 ml where the solution is poured; a rubber stopper with two apertures through which two tubes bent at an angle (one long, the second short) and the rubber air pump are passed. In the complete set two glass filters, two rubber tubes in length on 4 sm and two needles of Bobrov enter also.
To the end of a long glass tube attach the rubber tubule which free end spread on the glass filter, filled with sterile cotton wool. On other end of the glass filter spread the rubber air pump. When air pump up in bank in last the elevated pressure, therefore a solution from banks through a rubber tubule which is attached is created to a short tubule, and a needle arrives in a blood vessel.
Sutural surgical material used for applying surgical sutures and bandaging individual anatomical structures
(vessels, skin, muscles, bones etc.) as well as to stop the bleeding.
Silk Surgical - natural material that does not resolve, has high strength and stability. Made from natural silk, raw silk, well bleached and refined, with minimal addition of impurities of high grades of cotton fibers to increase strength fibers. Use silk mainly to check "being" vessels aponeurositis stitching, leather, anastomat hollow bodies, etc. He hardly stretched, head of "undertake two nodes. Silk threads in the body over time, gradually encapsulates. Silk produced in the form of long, thin, twisted treated well (at least woven), yarns, because they are stronger. However, less elastic threads and bad head "yazuyutsya in knots.
Currently being developed biologically active suture material with antimicrobial action and biostimulant effect. They can get by drawing on a thread coating that contains biologically active substances (BAS) by impregnation threads in the thread by introducing chemical groups that link the bar by making threads of material that is biologically active properties.
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