Medical device and locking mechanism therefor
AssigneeNicodel S.A.
InventorEmmanuel Mastorakis
Life of this patent
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Abstract
A locking mechanism 10 for a medical sharp device such as a syringe assembly 62 includes a retainer part 12 for retaining a hypodermic needle 22, and a connector part 14. The retainer part includes lugs 46 for engagement with a recess 82 formed in a neck 70 of the syringe assembly. When a plunger 72 of the syringe assembly is pushed fully forwards, the lugs 56 of the retainer part 12 engage behind a ledge 54 of the connector part 14 and the lugs 46 disengage from the recess 82. The plunger 72 may then be retracted, pulling the needle 22 into the barrel 64 of the assembly. The neck portion may be eccentrically mounted on the barrel and means 116,118 may be provided for preventing rotation of the plunger 72 in the barrel 64.
Claims56
A locking mechanism for controlling engagement between parts movable relative to one another in medical sharp devices, the mechanism comprising:
- a retainer part for retaining a medical sharp, the retainer part having a fixed formation which is engageable with a second formation located on a body part of a medical sharp device and a connector part which is movable relative to the body part to a position in which the connector part and retainer part are in a mutually engaged configuration, wherein the connector part, during movement to the engaged configuration, is adapted to alter the relative engagement between the first and second formations to enable release of the retainer part from the body part.
A locking mechanism as claimed in any preceding claim in which the retainer part includes a flexible leg, the first formation being located on the leg, the connector part being adapted to flex the leg, on engagement with the retainer part, to move the first formation relative to the body part.
A locking mechanism as claimed in any preceding claim in which the connector part includes a bore into which at least part of the retainer part is insertable.
A locking mechanism as claimed in any preceding claim in which the retainer part is adapted to retain a hypodermic needle, the retainer part including an elongate bore passing therethrough, the bore being engageable with a cylindrical outer surface of a needle.
A locking mechanism for a medical device comprising a retainer part for retaining medical sharp devices, the retainer part including at least one connector portion thereof adapted for engagement against a body part of a medical sharp device, and a connector part, the connector part being adapted for movement to engage the connector portion for connection therewith, movement of the connector part once connected to the connector portion causing movement of the retainer part.
A hypodermic needle assembly comprising a generally cylindrical needle and a retainer for the needle, the retainer having an elongate bore formed therethrough, the needle being a push-fit in the bore for sealing engagement therein.
A hypodermic needle assembly comprising a fluid container for sealably maintaining fluid therein, the container having a main body connected at one end thereof via a shoulder to a generally cylindrical neck portion having an open front end, and a needle retainer assembly comprising a needle retainer and a needle, the needle retainer being removably insertable through the open front end of the neck portion into the neck portion of the fluid container.
A locking mechanism substantially as described herein with reference to the accompanying drawings.
A hypodermic needle assembly substantially as described herein with reference to the accompanying drawings.
A medical device substantially as described herein with reference to the accompanying drawings.
A syringe device having a barrel portion, a plunger located in the barrel, the barrel portion having an eccentrically located neck at one end thereof, and means provided for preventing rotation of the plunger in the barrel.
Dependencies are inferred from the claim text.