Safety assembly for a syringe
AssigneeSanofi-Aventis
InventorsStephane Chevallier, Jean-Michel Chevallier
Life of this patent
Estimating the term…
Abstract
A safety support device for a syringe comprises a support sheath (16) for the body (10) of the syringe and an inner sheath (18) suitable for sliding relative to the support sheath between a waiting, retracted position and the extended position for protecting the needle (14) of the syringe. The device has means for holding the syringe body (10) relative to the support sheath (16) and retaining means (30, 32, 22) suitable for being activated to retain g the inner sheath in the waiting, retracted position inside the support sheath and for being deactivated by the piston (12) of the syringe to allow the inner sheath (18) to extend into its protective, extended position.
Claims8
A safety syringe support system comprising, in combination,
- a) a first sheath having a proximal end opposite a distal front end;
- b) a second sheath having proximal end opposite a distal front end;
- c) a spring biasing the first and second sheaths to move relative to each other;
- and
- d) at least two resilient tongues extending axially and proximally from the proximal end of one of the sheaths configured to flex radially allowing the spring to move one sheath relative to other sheath.
A safety syringe support system comprising, in combination,
- a) a first sheath;
- b) a second sheath, where the first and second sheaths are configured to move relative to each other from a start position to a final position, where one of the sheaths has an inside portion configured to accept and hold a syringe having a needle attached to a distal end and where each sheath has a proximal end opposite a distal front end;
- and
- c) at least two resilient tongues extending axially and proximally from the proximal end of one of the sheaths where each tongue terminates in a ramp having a bearing surface and are configured to flex radially allowing the sheaths to move relative to each other from the start position to the final position.
A safety syringe support system comprising, in combination,
- a) a first sheath;
- b) a second sheath, where the first and second sheaths are configured to move relative to each other from a start position to a final position, where one of the sheaths has an inside portion configured to accept and hold a syringe having a needle attached to a distal end and where each sheath has a proximal end opposite a distal front end;
- c) at least two resilient tongues extending axially and proximally from the proximal end of one of the sheaths;
- and
- d) a two-part lock having a first part on the first sheath and a second part on the second sheath, where the lock is engaged when sheaths are in the final position preventing the sheaths from moving relative to each other.
Dependencies are inferred from the claim text.