DISPOSABLE SYRINGE MANUFACTURING

Disposable Plastic Syringes are being used by doctors to inject medicines through Intravenous or intramuscular ways for the treatment of diseases & also by research & development personnel. Disposable syringes are made of plastic material and are used in the field of medical and veterinary science. Due to their availability in sterilized condition, ready to use, and cost effectiveness, disposable syringes are fast replacing the age old glass syringes. Moreover, the horror of AIDS worldwide has almost dispensed with the reuse of syringes and the demand of disposable syringes has increased phenomenally. Disposable syringes are mostly injection moulded from polypropylene. Syringes are available in sizes of 1 ml, 2 ml, 5ml and 10ml, 50ml in a variety of designs and consist of either two or three components construction. The number and size of injection moulding machines required depend upon syringe construction, number of mould cavities, annual production. These are made of plastic material have been successfully used in the medical and Pharmaceutical Practice for many years The constantly increasing use of this type syringe Indicates its importance which is based mainly on the advantages it offers regarding cost and hygienic applications. The manufacture of plastic syringes has been developed to such a degree that the products now satisfy the requirements and standards set by the hospitals and physicians. At the same time they offer the best possible technique of applications to the physician and highest possible degree of safety to the patient. Disposable needle is widely used by doctors for injection purpose with the help of syringes. With the increase in population in our country, requirement of medicine and injections has increased. For more strength of people more number of needles are required with syringes. Tablets or capsules also pay a great role in the life of human beings but injections are also a must to some extent. For quick relief, needles are used by surgeons, dental surgeons, Veterinary Surgeons and by the breeders in the poultry farm, where the farm birds are periodically injected against epidemics. During epidemics for better control, disposable needles are of much use. Veterinary Surgeons and doctors find it more useful to use needles as tablets or syrup shall not be helpful. To avoid wastage and to reduce cost by quantity of syrup, needles find a wide scope with the veterinary surgeons/doctors. With the development of pharmaceutical industries the use of syringes and disposable needles will also develop. About 70% pharmaceutical industries are in small scale sector. The output of small scale sector covers a wide spectrum, anti T.B. Drugs, ant dysentery drugs, unit rhenemsties, haematirines, hormonal preparations, tranquilizers, analagesties and anti-Ryrities. Disposable needles are becoming more popular in the medical world due to its lower cost and higher accuracy. Plastic can be used in place of metal without any problem. The procedure is also relatively easy and cheaper. Only one disadvantage is that there is not so much heat resistance as compared to hypodermic needle. Even then the disposable needle has widely replaced hypodermic needle because of lower cost, easy compatibility and higher sterilizations. Whenever a suture is required to close a wound. needles to arm the suture material are necessary. The number of sizes and the variety of different shapes of needles run into many thousands. The range supplied by manufacturers is usually classified into types for specific surgery, as for example. arterial. general purpose. intestinal. obstetric ophthalmic. plastic. retention. Shapes are designated as straight, curved, 1/2 circle, 5/8 circle etc. and the sections as round bodied, triangular cutting edge, triangular reverse cutting point, tracer point. In addition the length of the needle from point to hilt is specified in millimeters and the hilts are designed to take the various diameters of suture material employed. Needles are chosen by the surgeon to suit his operating technique and it is largely because of the surgeons interest in improving suture efficiency that the development of surgical needles has taken place. In very many cases the surgeon himself has caused needles to be made to his own design and a large number of commonly used needles are referred to by the name of the inventing surgeon. Surgical needles are of two types : those which have an eye through which the suture is threaded and eyeless needles where the suture is inserted into the hollow hilt and held in position by swaging the metal around it. The first patent on an eyeless needle was obtained by the late Sir Henry Souttar in 1921. but in the U.K. their use has only increased appreciably in the past few years. In the U.S.A. 70 percent of the suture needles are of the cycle’s type. The needles themselves are made either of stainless steel or of carbon steel, the latter usually being plated to resist corrosion. At one time the carbon steel needle had a better resistance to bending than its counterpart in stainless steel but recent technological advance hare is proved stainless steel needles and they now compete in strength with carbon steel and have added advantage that they will not corrode and do not present the surgeon with the dreaded emergency of having to locate and extract the broken point of a needle embedded somewhere in the tissues of an unfortunate patient.