Abstract: In the field of the production of very high frequencies, for example from 1 gigahertz to several terahertz, by beating the frequencies of two laser beams together, a device includes a resonant optical cavity having very stable dimensions receiving the beams, with for each beam, an interrogation device of the resonant cavity supplying an electrical signal representing the difference in frequency between the light frequency of the beam and a resonance frequency of the resonant cavity. The frequency of each beam is servo controlled to minimize the frequency difference observed. The laser beams are produced by a dual-frequency laser producing two beams of different frequencies and orthogonal polarizations. A polarization separator is used for separate servo control of the beams according to polarization, and a polarizer is placed behind a main output of the resonant cavity producing an electromagnetic beam mixing the two polarizations and amplitude-modulated at the beat frequency.

Abstract: In the field of the production of very high frequencies, for example from 1 gigahertz to several terahertz, by beating the frequencies of two laser beams together, a device includes a resonant optical cavity having very stable dimensions receiving the beams, with for each beam, an interrogation device of the resonant cavity supplying an electrical signal representing the difference in frequency between the light frequency of the beam and a resonance frequency of the resonant cavity. The frequency of each beam is servo controlled to minimize the frequency difference observed. The laser beams are produced by a dual-frequency laser producing two beams of different frequencies and orthogonal polarizations. A polarization separator is used for separate servo control of the beams according to polarization, and a polarizer is placed behind a main output of the resonant cavity producing an electromagnetic beam mixing the two polarizations and amplitude-modulated at the beat frequency.

Abstract: The invention relates to a safety device for injecting a medicinal product, such as a lyophilized product, comprising a syringe body (9), a protective casing (19) and locking members (22, 23) for maintaining the syringe body (9) and the protective casing (19) in an injection position. According to the invention, this device comprises members (40) which immobilize the locking members (22, 23) and which can be displaced between a natural initial position, called the deactivation position, in which each locking member (22, 23) is immobilized in a locked state, and a position, called the activation position, which allows each locking member (22, 23) to be switched to an unlocked state. Moreover, actuating members (46), positioned on the trajectory of an intermediate shoulder (32) formed on the plunger rod (6) of the injection device, are designed to bring about a displacement of the blocking members from their deactivation position to their activation position during the ascending movement of the plunger rod.

Abstract: A device for protecting a syringe (2) needle (7) comprising a needle-protecting cap (8) made of a flexible material and a protective hub (5) made of a rigid material adapted to be mounted on the needle-protecting cap (8) and provided with internal elements (12) for gripping the needle-protecting cap. The internal gripping elements provided in the protective hub (5) comprise at least a longitudinal clip (12) secured to the side wall of the protective hub (5) via a flexible intermediate hinge (13) forming an articulation longitudinally delimiting a downstream longitudinal section having a tip-shaped free end capable of being fitted into the needle-protecting cap (8) and comprising a front surface adapted to limit its tilting, and an upstream longitudinal section provided with a front surface adapted to limit reverse tilting of each clip (12) when the protective hub is removed.

Abstract: A single-use injection device includes a tubular receptacle provided with sealingly closing-off elements delimiting a chamber intended to be filled with a liquid, and having a liquid-delivery duct opening into the chamber, a needle-carrying base having a duct for supplying liquid to the needle and being axially movable between a retracted position in which the delivery duct is closed off, and an advanced injection position in which it allows the liquid to flow out of the chamber to the needle, a cap having a shape adapted to cover the base and provided with elements for detachable connection to the tubular receptacle, axial-stop elements arranged so as to keep the base in its closing-off position when the latter is covered by the cap, and axial-stop elements arranged so as to limit the axial-displacement travel of the base, once the cap is removed.

Abstract: A single-use injection device, includes a pre-filled syringe (1), a syringe body (5) which is integral with the said syringe, and a protective case (10), the syringe body and protective case being provided with elements (9, 14, 15, 21) for relative locking in translation, which permit their relative displacement between a position of injection and a position of protection after use. The injection device includes a locking ring (23), which is provided with digital support elements (24), and locking units (25), which can lock the syringe body (5) and the protective case (10), in their position of injection, during injection, and can be displaced axially, such as to permit relative displacement of the syringe body and protective case, towards their position of protection after use, under the effect of the action of resilient member (27), only when the plunger (4) has reached its end of travel.

Abstract: A device for protecting a syringe (2) needle (7) comprising a needle-protecting cap (8) made of a flexible material and a protective hub (5) made of a rigid material adapted to be mounted on the needle-protecting cap (8) and provided with internal elements (12) for gripping the needle-protecting cap. The internal gripping elements provided in the protective hub (5) comprise at least a longitudinal clip (12) secured to the side wall of the protective hub (5) via a flexible intermediate hinge (13) forming an articulation longitudinally delimiting a downstream longitudinal section having a tip-shaped free end capable of being fitted into the needle-protecting cap (8) and comprising a front surface adapted to limit its tilting, and an upstream longitudinal section provided with a front surface adapted to limit reverse tilting of each clip (12) when the protective hub is removed.

Abstract: A single-use device for injection includes a pre-filled syringe with a front nose which supports an injection needle which is protected by a protective cap, and a syringe body which accommodates the syringe. The device further includes a joining piece with claws which can be extended radially to cover and grasp the protective cap by penetrating the cap. The syringe body includes a front section, which can be separated, that is delimited by a breakable area. The front section includes a neck that clamps the tabs of the joining piece onto the protective cap.

Abstract: The invention concerns a single-use device for injecting a dose of a medicinal product, comprising a syringe (1) and a piston rod (7) provided with a collar (9) housed in a casing formed of two parts, a front part (11) and a rear part (10), fitted inside each other and capable of sliding in relation to each other over a short traverse between two positions, a retracted position and a forward position. This device additionally includes means (35) for supporting the collar (9) of the piston rod (7) arranged so as to permit, on the one hand, injection under the effect of a propulsion spring (50) in the forward position of the parts (10, 11) of the casing and, on the other hand, backward movement of the syringe (1) inside the casing, after injection, in the retracted position of the said parts of the casing. It also includes means (28, 29) for viewing the supporting means (35) at the end of injection.

Abstract: The invention relates to an injection device comprising a syringe body (1), which delimits a chamber which is designed to be filled with liquid, and a unit (25) for distributing the liquid, comprising an end piece for closing off the said chamber, which is extended by a base, which supports an injection needle which is protected by a protective cap (35), the said distribution unit being mobile axially between a closing-off position of the chamber, and a position for injection of the liquid. According to the invention, the unit (25) for distributing comprises an intermediate section (31) between the base and the closing-off end piece, and the syringe body (1) comprises a ring (6) which delimits two superimposed compartments (18, 19), which can each accommodate the said intermediate section.

Abstract: The invention relates to an injection device comprising a syringe body (1, 13), which delimits a chamber which is designed to be filled with a liquid, and a unit (17) for distributing the liquid, comprising an end piece (17a) for closing off the chamber, which is extended by a locking male conical connection (17c), and can be displaced axially between a closing-off position of the said chamber and a position for injection of the liquid. According to the invention, the unit (17) for distributing comprises an intermediate connection (20), which is provided between the closing-off end piece (17a) and the male conical connection (17c).

Abstract: The invention relates to a single-use device for injection, which comprises a conventional syringe (1) and a device for protection of the injection needle (2) of this syringe (1) after use, comprising a protective sheath (7) which consists of two, rear (9) and front (8) bodies, which are designed to be rendered integral, one in the extension of the other, and a ring (24) which is accommodated in the rear body (9) and is provided with means (29, 31) for locking the syringe (1), the said ring being designed to be displaced between a first position, for injection, and a second position, for protection after use of the injection needle (2), by means of a spring (42) which is kept compressed in the position for injection, and is released when injection is completed.

Abstract: The invention relates to a process for manufacturing an injection device of the pre-filled type comprising producing, in a deformable plastics material, a tubular syringe body (101) equipped with an external locking element (104) suitable for deforming radially between retracted and dilated positions, producing a tubular sheath (109) equipped with an internal locking element (110, 111) paired with that of the syringe body (101), fitting the sheath (109) round the syringe body (101), by a relative sliding of these latter permitted by the radial retraction of the locking element (104) of the syringe body (101), and introducing into the syringe body (101) a rigid pre-filled container suitable for bringing the locking element (104) of the said syringe body into its dilated position, enabling an irreversible locking of the sheath (109) to be obtained once it has been brought, after injection, into an advanced, post-use protection position.

Abstract: The invention relates to a process for manufacturing an injection device of the pre-filled type comprising producing, in a deformable plastics material, a tubular syringe body (101) equipped with an external locking element (104) suitable for deforming radially between retracted and dilated positions, producing a tubular sheath (109) equipped with an internal locking element (110, 111) paired with that of the syringe body (101), fitting the sheath (109) round the syringe body (101), by a relative sliding of these latter permitted by the radial retraction of the locking element (104) of the syringe body (101), and introducing into the syringe body (101) a rigid pre-filled container suitable for bringing the locking element (104) of the said syringe body into its dilated position, enabling an irreversible locking of the sheath (109) to be obtained once it has been brought, after injection, into an advanced, post-use protection position.

Abstract: A single use syringe comprises a separable, reusable handle including a piston (6) and a support part (2, 3) for a sleeve (4) having an interlocking structure (5) through which the piston (6) extends. The syringe body (11) has a tubular end (16) with an interlocking structure cooperating with that of the sleeve (4) of the handle (1) and the shape of which is adapted to interlock with said sleeve, and a protecting shell (12) having a locking section (22) capable of covering the tubular end (16) and the sleeve (4) so that they are locked in their interlocking position, said protective shell (12) being adapted for sliding along the syringe body (11) between two extreme positions, i.e. a forward position where it totally covers the injection needle and a pulled back position where it frees it and covers the interlocked tubular end (16) and sleeve (4).