Vygon

Thierry Brinon

Jean-Max Huet

Daniel Rossi

A hub (,) of an arterial puncture needle includes a tubular and transparent viewing chamber (,) accessible to the reflux of blood, and a reserve chamber (,) which is leaktight to the ambient air and in air communication with an outlet end (,) of the viewing chamber. The two chambers form a rigid unit with the hub and have predetermined volumes such that the blood does not reach the air reserve chamber when the systolic pressure is maximal.

Hub of arterial puncture needle

The invention relates to a portable and non-implantable device to enable a patient to self-administer, on demand, successive doses of a liquid while ensuring that the period of time between two successive administrations cannot be less than a reference value. The device has a liquid reservoir formed in a piston which can be pushed in a chamber to expel the contents of the chamber via an injection outlet and which is returned in the opposite direction by a return. The liquid reservoir communicates with the inside of the chamber via a passage formed through the piston and is provided with a flow rate limiter so that the time required to fill the chamber corresponds to a reference value. The invention is suitable for medical applications.

Device for injecting a liquid

Surgical instrument for performing epidural anesthesia

A hollow needle fixed in a chamber establishes a connection between an upstream coupling and a downstream coupling when it passes through a plug. The plug is made of a material such that it regains its closure properties when the needle is no longer passing through it, and it is pushed away from the needle by a spring to a closure position in which it fills the outlet opening of the downstream coupling. The connector is particularly suitable for use in medical applications.

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Montsoult, France

Thierry Brinon