Now the medical device industry for medical liquid silicone rubber material exhibits preference. It is different because some users allergic to rubber, liquid silicone rubber has low sensitivity. Liquid silicone does not contain phthalates in PVC, plasticizers in this experiment was found to disrupt the endocrine system and reproductive and neurological damage.
The same properties of the liquid silicone rubber chemically inert and temperature resistant, it has a very long shelf life and time. Silicone Suppliers of raw materials should be processed in a recommendation within six months, but in fact cast member containing silicone rubber can be stored indefinitely, even though the mold workers recommend a maximum storage time is three years. This medical material durability to extend the life of the corresponding medical device, so that manufacturers and end users will benefit.
Silicone suitable for application in medical devices
However, cost is a defective liquid silicone rubber. Compared to other raw materials, such as thermoplastic elastomers and thermoplastic polyurethanes, silicones is their cost 3-5 times; production cycle is longer, is the double thereof.
In some applications we need to consider the cost, if some of the properties of the liquid silicone rubber such as heat resistance, compression set and chemical inertness is not required, you can use the cheaper TPE thermoplastic elastomer and thermoplastic polyurethane TPU.
With the medical device industry awareness of medical material used in the product continues to deepen, the liquid silicone rubber to make it unique and special properties of the scope of application was expanded. As these features are more widely known, new applications and the expanding market is still driving the liquid silicone rubber is more widely used in medical devices.
The basic components of silicon material silicon element is the earth's most common and readily available elements. The liquid silicone rubber with easy-to-manufacture into complex shapes as well as chemically inert, its practicality and excellent features make it from the outset, very suitable for application in medical devices.
In medical uses, biocompatible silicone must be tested and comply with the US Food and Drug Administration. Medical silicone in applications fall into two categories: time-limited and no time limit. Typically restricted for short-term transplantation, for long-term graft unrestricted. Herein belong medical grade liquid silicone rubber.
Low sensitivity and biocompatibility of silicone fluid, in use, so that risk of allergic reactions to a minimum. And because of their health, bacterial and fungal growth and spread almost impossible. These features make it ideal for short-term and long-term graft device.
Liquid silicone rubber also have unusually permanent compression set, can be made in different thickness in the same part. Combined with durability and plasticity of the material, these features make it a key component of medical devices.
Silastic flexible, durable, transparent, UV irradiation and acceptable tensile strength. Unlike traditional rubber, liquid silicone rubber can withstand extreme temperatures, from -55 ℃ not denatured to 200 ℃. Because of this characteristic, the instrument can be made of silicone rubber sterilized by autoclaving.