Injection head for injecting fluid substance and permitting monitoring of injection site before injection of fluid substance, and syringe comprising such head

Abstract

The invention relates to an injection head (10), for injecting a fluid substance, and a syringe comprising such a head, said head being characterized in that it has a connection body (11) continued bya hollow tube (15) intended to communicate with the outlet of the reservoir and having a distal end, and a needle (16) having a pointed distal end, the head additionally comprising means for controlling the relative movement of said needle (16) with respect to said hollow tube (15) between a puncturing position, in which the pointed end of the needle (16), which is extendable in the hollow tube (15), protrudes from the distal end of the hollow tube (15), and a position for monitoring and characterizing the liquid coming from the injection site, the pointed distal end of the needle (16) beingset back from the distal end of the hollow tube (15) in said position.

Description

technical field [0001] The present invention relates to the field of subcutaneous injection of fluid substances (in a non-limiting manner, filling products, blood derivatives, sclerosing products). [0002] More specifically, the present invention relates to an injection head which allows monitoring of Presence of fluid originating from the injection site, and characterizing the fluid. [0003] The injection head according to the invention is intended in particular (but not exclusively) for the subcutaneous injection of exogenous fluid substances, especially hyaluronic acid, for cosmetic purposes, such as filling skin irregularities in the form of depressions (eg, wrinkles) . [0004] The injection head according to the invention may also be provided for injecting endogenous fluid substances previously withdrawn or derived from the body for re-injection into the injection site on the body after treatment (if required). Background technique [0005] Subcutaneous injection ...

AI Technical Summary

Problems solved by technology

This can be explained by insufficient suction, however, it can also occur in cases where the suction is very strong but not effective due to the friction of the viscous fluid to be injected into a very small diameter needle

[0009] It should be noted that the viscosity of the filling product is considerable and guarantees the quality of the cosmetic action, and in recent years said viscosity has increased extensively, so that the The injector doesn't work in most cases

[0010] Also, it will be noted that the design requires two hands to operate, making the maneuver less easy, especially for the untrained

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