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Societe D'etudes Et D'applications Techniques-sedat

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Laboratoire Perouse Implant

Socite D'etudes Et D'applications Tech

Yves Arnissolle

Eric Raul Perouse

Thierry Richard

The medical device for distributing fluid comprises:

Medical device for distributing at least one fluid

The invention concerns a device for the two-way transfer of a liquid ( ) between a bottle ( ) provided with a cap ( ) capable of being perforated at a cartridge ( ) comprising a cylindrical reservoir ( ) wherein slides a piston ( ) capable of being perforated. It comprises: a body ( ) including means to be fixed on the bottle ( ); a member ( ) linking the piston ( ) capable of being perforated to the body ( ); a shuttle ( ) relative to the body ( ) and said linking member ( ), the shuttle bearing a hollow needle ( ) whereof one first end ( ) is adapted to pierce the piston ( ) and whereof the second end ( ) is adapted to pierce the cap ( ). The shuttle ( ) is mobile between a piston wherein the needle ends ( ) are spaced apart from the piston ( ) capable of being perforated and the cap ( ) capable of being perforated and an end-of-stroke transferring position wherein the needle ends ( ) are received in the cartridge ( ) and the bottle ( ).

Device for two-way transfer of a liquid between a bottle and a cartridge

An injection syringe having a body ( ) bearing an injection needle ( ), a reservoir ( ) containing a liquid ( ) to be injected and being movable relative to the body ( ) for causing the liquid to be injected to circulate through the needle ( ), and a needle shield ( ) movably mounted relative to the needle ( ) for movement, under the control of a spring ( ), from a retracted position towards an active protective position. The syringe has complementary parts ( ) which, when engaged, retain a first spring ( ) end cooperating with the shield ( ), and which, when disengaged by further movement of the reservoir ( ), release the spring ( ) first end to displace the shield ( ) to its active protective position. The second spring ( ) end is pressed against the reservoir ( ) for gradually compressing the spring ( ) during injection.

Injection syringe with needle shield loaded with a spring

An injection syringe ( ) has an elongated syringe body ( ) including a tube ( ), a perforated front wall ( ) for receiving an injection needle ( ), and a rear actuating plunger ( ) movably mounted inside the tube ( ). A mobile needle shield ( ) is externally movable along the syringe body ( ) between a retracted position and an active position. An axial coupling mechanism ( ) is provided between the shield ( ) and the actuating plunger ( ) for their simultaneous displacement towards the front on a common section. A release mechanism ( ) is provided for releasing the coupling mechanism ( ) to disengage the actuating plunger ( ) and the needle shield ( ) when the needle shield ( ) is finally set in place.

Injection syringe with externally mobile needle shield

The invention concerns an injection syringe ( ) comprising a syringe body ( ) bearing an injecting needle ( ) and an actuating piston ( ) movably mounted in the body ( ). The injecting needle ( ) extends axially inside the body ( ) up to a rear end ( B) on one side of which is initially arranged in the body ( ) a transverse wall ( ) capable of being perforated. Said transverse wall ( ) is movable relative to the needle from an initial position in which the transverse wall ( ) is at some distance from the needle ( ) to a final position in which the transverse wall ( ) is pierced by said needle ( ). The syringe comprises rigid means ( ) for axially guiding the rear end ( ) of the needle when the transverse wall ( ) is being pierced.

Injection syringe with needle projecting in the syringe body

The balloon inflating device comprises a syringe (12) the plunger (28) of which has a screw thread (36). It further comprises a mechanism for retaining the plunger comprising a first half nut (40A) movable between a position separated from the screw thread (36) and a position of engagement with the screw thread (36), and a slidable control element (42) which comprises first coupling means (54A) adapted to displace the first movable half nut (40A). The retaining mechanism (14) further comprises a second movable half nut (40B) movable between a position spaced away from the screw thread (36) and a position of engagement with the screw thread (36). The control element (42) further comprises second coupling means (54B) associated with the second half nut (40B) and adapted to move the second half nut. The first and second coupling means (54A, 54B) are mechanically connected to each other in the region in which the control element (42) is coupled to the first and second half nuts (40A, 40B).

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Saint Genis Laval, France

Yves Arnissolle