Safety needle system operable with a medical device

A system operable with a medical device, comprising:

• a housing including a needle mount and a chamber;
• a needle having a distal end insertable through the medical device and a proximal end coupled to the needle mount, the needle comprising a lumen in fluid communication with the chamber of the housing to transmit fluid to the chamber;
• a sheath telescopically engaged with the housing and circumferentially surrounding at least a portion of the needle, wherein the sheath operates in:
• a retracted position that exposes the distal end of the needle and an extended position that substantially surrounds the distal end of the needle;
• wherein the sheath is coupleable to the medical device such that removal of the needle from the medical device transitions the sheath from the retracted position to the extended position;
• and
• a slider, longitudinally engaged with at least one of the sheath and the housing and including a restraint, wherein the restraint comprises a set of restraint tabs that interact with a distal portion of the sheath in a first configuration that reinforces coupling of the system to the medical device in the retracted position, and wherein the set of restraint tabs provide a second configuration that facilitates weakened coupling of the system to the medical device in the extended position.

A method for covering a needle, the method comprising:

• providing a system used with a medical device, wherein the system includes a housing to which the needle is coupled, and a sheath that is telescopically engaged with the housing and that operates in a retracted position that exposes a distal end of the needle and in an extended position that covers the distal end of the needle;
• providing a set of restraint tabs configured to facilitate coupling of a distal portion of the sheath with the medical device, producing reinforced coupling between the distal portion of the sheath and the medical device, with a first configuration of the set of restraint tabs, in the retracted position;
• transmitting the needle, through a distal portion of the sheath and the medical device, into a patient, thereby facilitating coupling of the medical device to the patient;
• allowing the housing to be pulled away from the medical device in a proximal direction, thereby retracting the needle from the medical device while maintaining coupling of the medical device to the patient;
• allowing the sheath to slide in a distal direction towards the extended position, thereby drawing the sheath into the extended position;
• producing weakened coupling between the distal portion of the sheath and the medical device, with a second configuration of the set of restraint tabs, in the extended position;
• fixing the sheath in the extended position;
• and
• allowing uncoupling of the medical device from the system with the needle covered.