1. Syringe intended for the ultra-ligamentary injection of liquid products, especially anaesthetic products, of the type composed of a body the forward portion of which, to which the injection needle is fitted, serves as housing for a container of the said liquid product, constituted by a glass tube the rear extremity of which is closed by a plug (7) of rubber or analogous material, while the rear portion of the body serves as guide for a piston (6) actuated by a rack (4), in such manner that when the operator operates the syringe, the piston progresses forward step by step, thrusting the said plug forward into the interior of the container, and consequently the liquid product into the injection needle, the piston (6) being terminated, at its forward extremity, by a head (12, 12') of a diameter substantially equal to the internal diameter of the container (8), characterised in that the head forwardly presents a concavity causing migration of the material of the plug (7) towards the axis in the advance of the piston (6).

The invention relates to an anesthesia syringe (1). The aim of the invention is to provide an improved, very compact anesthesia syringe (1) that allows to carry out injections in a precise and reproducible manner. The inventive syringe is characterized in that at the back of an advance plunger (7) a first hydraulic chamber (16) and at the back of the first hydraulic chamber (16) a second hydraulic chamber (19) are provided and in that the hydraulic chambers (16, 19) are interlinked in a manner so as to be rheostatically controlled. The invention also relates to a special seat for needles that are specifically developed for the inventive syringe (1).

The instrument has a sleeve (2) comprising a metal body or core (3) and a sheath (4) surmounted around the metal body or core. The sheath distorts under the effect of a type of sterilization or disinfection such as sterilization by dry heat, by steam or sterilization with ethylene oxide, currently utilized by a practitioner. The sheath is made of material whose melting point is lower than 90[deg]Celsius.

The present invention provides a low-cost, durable dental articulator that does not require the use of toxic or messy glues. The articulator is composed of a pair of bands that encircle and are attached to the plaster upper and lower teeth bases of the model, a pair of spheres that mechanically attach to the bands at any of several positions corresponding to the rear of the mouth on the dental model, and a hinge assembly simulating movement of the jaw and made of two arcs attached to each other at their ends by a hinge mechanism and having clamps at their apexes for attaching to the spheres. The dental model can be adjusted to mimic the occlusion of the patient by adjusting the position at which the spheres are attached to the bands and the position of the spheres in the clamps.

The invention relates to a device of the type adapted to deliver fluids, notably medicaments, under pressure. The device comprises a container 1 of variable volume in the form or shape of a pouch or flexible receptacle of generally cylindrical shape with longitudinal pleats 2 containing the fluid under pressure to be delivered and equipped with an actuator C permitting to open a valve 15 a , 15 b to enable the delivery of said fluid, the whole being located inside a container 4 capable of resisting to an elevated internal pressure, the internal volume of the latter container comprised between its wall and the container of variable volume being filled with a neutral gas under a pressure sufficient to exert on the container of variable volume a pneumatic constraint sufficient to permit the delivery of the therein contained fluid when the above-said valve permitting said delivery is operated by the aforementioned actuator C.

The invention relates to a device of the type adapted to deliver fluids, notably medicaments, under pressure. The device comprises a container 1 of variable volume in the form or shape of a pouch or flexible receptacle of generally cylindrical shape with longitudinal pleats 2 containing the fluid under pressure to be delivered and equipped with an actuator C permitting to open a valve 15 a , 15 b to enable the delivery of said fluid, the whole being located inside a container 4 capable of resisting to an elevated internal pressure, the internal volume of the latter container comprised between its wall and the container of variable volume being filled with a neutral gas under a pressure sufficient to exert on the container of variable volume a pneumatic constraint sufficient to permit the delivery of the therein contained fluid when the above-said valve permitting said delivery is operated by the aforementioned actuator C.

A manually-actuated device for the deliver of a volume of liquid which includes an outlet through which liquid is in use delivered and a cover member which is movably disposed relative to the housing between a first position in which the cover member at least partly covers the outlet and a second position in which the cover member acts as a lever which in use is acted upon by a user to actuate the delivery device.

The invention concerns a device (1) for manipulating tools comprising two parts, said device being of the type consisting of a frame and at least one tray forming a table, designed to receive the mold. The invention is characterized in that it comprises two horizontally arranged trays (6, 9-7, 8) one of which is arranged sliding on the frame to be mobile in translation relative to the other tray, from a close position to a remote position and inversely, so as to enable the tool to be manually opened and closed.

An electric toothbrush having a handpiece, a bristle holder which is arranged on a head portion of the handpiece and is rotatable about an axis of rotation of the bristle holder, and a drive mechanism for the bristle holder. The drive mechanism includes a motor which is arranged on the handpiece, and a transmission member which transfers a driving motion from the motor to the bristle holder. The transmission member is arranged to rock in multiple axes and is arranged to be driven by the motor such that it approximately traverses a double conical path.

A medical device delivery apparatus is provided which comprises a catheter having an expandable and contractible member and an expandable medical device disposed about the expandable and contractible member. At least portions of at least one of the medical device and the expandable and contractible member have a pressure sensitive adhesive applied thereto to adhere the medical device to the expandable and contractible member. The pressure sensitive adhesive is selected so as to release the medical device from the expandable and contractible member upon contraction of the member from an expanded state. Suitable medical devices include stents.