The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, and the device includes only two bumps protruding from the body, the two bumps having a proximal abutment surface, the distal abutment surface of the needle cover abutting against the proximal abutment surface of these only two bumps in the retracted position of the needle cover.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The bump of the body has a first end provided with a chamfer extending in a circumferential direction.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The body has a first axial slot extending from a distal end of said body, the first axial slot having a predetermined length comprised between [1-6] mm.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user’s activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The bump of the body has a first end, an opposite second end, and a decreasing height from said second end to said first end.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. At least one of the proximal abutment surface and the distal abutment surface includes a chamfer configured to ease passage of the needle cover over the bump of the body when the needle cover moves distally to the extended position.

The safety device includes a tubular body extending along a longitudinal axis. The tubular body is configured to receive the medical container, a needle cover movable relative to said body between a retracted position, and an extended position in which the needle cover distally extends from the retracted position in order to shield the injection needle after activation of the safety device, a release element configured to move the needle cover from the retracted to the extended position after activation of the safety device, and a retainer for maintaining the release element in a compressed condition when the needle cover is in the retracted position. The retainer is configured to transmit a user's activation force to the needle cover once the injection operation is completed. The needle cover includes a distal abutment surface, said distal abutment surface abutting against a proximal abutment surface of a bump protruding from the body in the retracted position of the needle cover. The distal abutment surface of the needle cover is located on a radial protrusion, and the radial protrusion has reinforcing means configured to reinforce a proximal side of this radial protrusion.

A method of treatment may include providing a syringe having medicinal fluid therein for administering to a patient and coupling an attachment portion of an extrusion accessory having a handle and a pawl to a flange portion of the syringe. The pawl may have first and second ends, and be hingedly and rotatably coupled relative to the handle at a first position at the first end and at a second position between the first and second ends. The method may further include applying a force to translate the handle in a direction substantially perpendicular relative to a longitudinal axis of the syringe to cause axial movement of the second end of the pawl. The second end of the pawl may be engaged with a plunger of the syringe and axial movement of the second end of the pawl may drive the plunger forward to extrude the medicinal fluid from the syringe.

It is an object of the present invention to provide a syringe which is capable of preventing an accident such that a patient inadvertently sticks her/his hand with an injection needle when improperly performing a needle retracting operation. A sleeve (10) is fitted around a syringe barrel (2) so as to be axially movable from an administration position such that the injection needle (5) projects to a distill side to an accommodation position such that the injection needle (5) is accommodated. A coil spring (16) for biasing the sleeve (10) toward the accommodation position is provided between the sleeve (10) and the syringe barrel (2), and is held in a compressed state in a spring holder (17). The spring holder (17) is disposed in association with the syringe barrel (2) so as to release the coil spring by further pushing the syringe barrel (2) to the distal side after completion of the administration of a liquid drug. The sleeve (10) is axially engaged with the syringe barrel (2) so as to be locked at the accommodation position when being moved to the accommodation position by a biasing force of the coil spring (16).

A syringe with structural features to accomplish one-handed aspiration as well as one-handed injection. The syringe includes one or more breaking points that are configured to break at predetermined locations in response to external forces being applied thereto. To assist in accountability, identification chips and/or codes are included to allow for the traceability of the syringe to potential sources of irresponsible dispensing of medical waste.

An injector comprises a cylindrical barrel, a movable body housed in the barrel, and a plunger coming into separable contact with the movable body. The movable body includes a main body having an outer diameter smaller than an inner diameter of the barrel, a disk-shaped seal body disposed on the main body and including an outer circumferential end brought into close contact with an inner circumferential surface of the barrel, and at least one projecting portion projecting from the main body toward the inner circumferential surface of the barrel. A distance from a central axis of the movable body to a leading end of the at least one projecting portion is smaller than a half of an outer diameter of the seal body.