A safety syringe (1) includes a sleeve assembly (10) threadedly secured to a vial (40) containing regular insulin and including an axial channel (12) with a needle assembly (20) placed therein, and two opposite pivot pins (14) formed on an outer surface. The needle assembly (20) includes a needle hub (22) formed on a front end, and a hypodermic needle (23) through the needle hub (22). A protective covering (30) includes two opposite arms (31) pivotably secured to the pivot pins (14), a space (32), a slot (33) parallel to the arms (31) and communicating with the space (32), and at least one lock member (34) at an end of the slot (33). After injection, a clockwise rotation of the protective covering (30) until the lock member (34) passes through the needle hub (22), and the hypodermic needle (23) passes through the slot (33) to conceal in the space (32).

A syringe and needle assembly includes an elongated hollow barrel, a needle unit, and a plunger assembly. The hollow barrel has a connecting portion. The needle unit is disposed at the connecting portion and has an engaging structure, and the engaging structure is located in the hollow barrel. A plunger rod of the plunger assembly is movably disposed in the hollow barrel and has a pushing portion and an operating portion formed in front and rear ends of the plunger rod respectively, and the pushing portion faces the connecting portion and has a plurality of elastic hooks. The plunger assembly is adapted to move towards the connecting portion to push a liquid in the hollow barrel to be injected through a needle of the needle unit, and the plunger assembly is adapted to keep moving towards the connecting portion, such that the elastic hooks are engaged with the engaging structure.

According to the invention, a safety device for a pre-filled syringe with an injection needle comprises of a support body adapted to mount the pre-filled syringe, a needle shield slidably arranged with respect to the support body, a retention and locking means (M) for retaining and locking the needle shield with respect to the support body in a first and a second advanced position (PA1, PA2) and in a retracted position (PR). The needle shield comprises an annular flange adapted to rest on the skin of the patient receiving an injection. The retention and locking means (M) are arranged at a distal end of the safety device.

The invention relates to a syringe with a retractable needle comprising a barrel (2) having a nozzle (19) integrated in a male Luer adapter element (26); a piston (3) slidably arranged in the barrel (2) and coupled to a sealing element (16), said sealing element (16) having a central channel (20); a needle assembly comprising a needle (4), a needle holder (6) and a female Luer adapter element (7); a spring assembly arranged in the piston (3) comprising a spring sleeve (12), a spring (13) mounted on the spring sleeve (12), a spring tensioning element (14) located on the spring sleeve (12) and held in position by the piston wall, and a plunger (15) mounted within the spring sleeve; and a piston cap (10); said piston (3) being coupled to the sealing element (16) by means of the spring tensioning element (14); said spring sleeve (12) being held in position within the piston (3) by a ring element (18) protruding from the inner wall of the piston (3) and supporting the proximal end of the spring sleeve (12), the spring sleeve extending into the channel (20) of the sealing element (16) to the distal end thereof; said spring sleeve (12) comprising at its distal end a circular protrusion (21) on the inside designed to engage a circular recess (22) at the proximal end of the needle holder (6); wherein the piston (3) comprises a holding ring (11) on its inner surface designed to engage with an outer flange (17) of the spring sleeve (12) after actuation of the spring (13).

A safety housing based implant/medicament injecting system. The system includes a needle assembly prefilled with an implant/medicament for injection and an injecting needle/cannula, a housing for accommodating the needle assembly under usual bias inside said housing, a plunger means having a plunger rod configured for stage-wise forward motion including an initial-injecting plunger forward motion with the needle assembly within the housing to first engage the needle assembly with the housing and a subsequent continuing-injecting plunger forward motion independent of the needle assembly for injecting the implant/medicament. The needle assembly configured to return post-injecting to be secured inside said housing blocking any subsequent use thereof.

A safety housing based implant/medicament injecting system. The system includes a needle assembly prefilled with an implant/medicament for injection and an injecting needle/cannula, a housing for accommodating the needle assembly under usual bias inside said housing, a plunger means having a plunger rod configured for stage-wise forward motion including an initial-injecting plunger forward motion with the needle assembly within the housing to first engage the needle assembly with the housing and a subsequent continuing-injecting plunger forward motion independent of the needle assembly for injecting the implant/medicament. The needle assembly configured to return post-injecting to be secured inside said housing blocking any subsequent use thereof.

A system for injecting includes a syringe body defining a proximal opening and a distal needle interface. The system also includes a plunger member defining a plunger interior and configured to be manually manipulated to insert a stopper member relative to the syringe body. The plunger member includes a needle retention feature disposed in the plunger interior, an energy-storage member disposed in the plunger interior, and an energy-storage member latching member disposed in the plunger interior. The system further includes a needle hub assembly coupled to the distal needle interface of the syringe body. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. The needle is retractable into plunger interior upon manipulation of the plunger member to actuate the energy-storage member latching member.

A system for injecting includes a syringe body defining a proximal opening and a distal needle interface. The system also includes a plunger member defining a plunger interior and configured to be manually manipulated to insert a stopper member relative to the syringe body, the plunger member. The plunger member includes a needle retention feature disposed in the plunger interior, an energy-storage member disposed in the plunger interior, and an energy-storage member latching member disposed in the plunger interior. The system further includes a needle hub assembly coupled to the distal needle interface of the syringe body. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. The needle is at least partially retractable into plunger interior. The needle proximal end feature includes an annular distally facing surface.

A system for injecting includes a cartridge body defining a proximal opening and a distal needle interface. The system also includes a plunger member defining a plunger interior and configured to be manually manipulated to insert a stopper member relative to the cartridge body. The plunger member includes a needle retention feature disposed in the plunger interior, an energy-storage member disposed in the plunger interior, and an energy-storage member latching member disposed in the plunger interior. The system further includes a needle hub assembly coupled to the distal needle interface of the cartridge body. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. The needle is retractable into plunger interior upon manipulation of the plunger member to actuate the energy-storage member latching member.

A system for mixing drug products and injecting includes a syringe body, proximal and distal stopper members disposed in the syringe body, a plunger member, and a needle hub assembly coupled to the distal needle interface of the syringe body. The proximal and distal stopper members form a proximal drug chamber between there between and a distal drug chamber between the distal stopper member and a distal end of the syringe body. The plunger member includes a needle retention feature, an energy-storage member, and an energy-storage member latching member all disposed in disposed in a plunger interior. First and second sizes of the respective proximal and distal drug chambers can be modified by movement of the proximal and distal stopper members relative to the syringe body. The needle is at least partially retractable into plunger interior upon manipulation of the plunger member relative to the syringe body.