A protective sheath for use with a hypodermic needle comprises a tubular body for accommodating the needle and at least a portion of the syringe barrel adjacent the needle. The body is latched in protective relation on the syringe, but may be adjusted relative to the latter to enable the needle to be...http://www.google.es/patents/US5013302?utm_source=gb-gplus-sharePatente US5013302 - Hypodermic needle sheath
