MODIFIED MEDICAL SYRINGE WITH A FLOW REGULATOR FOR THE ADMINISTRATION OF LOCAL ANAESTHETIC

摘要

Modified medical syringe with a flow regulator for the administration of anaesthesia, which allows for anaesthesiologists to handle the needle, control continuous aspiration and administer the anaesthetic with a single hand, thereby preventing intravascular injections. It comprises a flexible tube, designed to be introduced inside the barrel, which supplies the anaesthetic; a cylindrical body located on the rod, equipped with a protuberance along a semicircle located on the proximal side of the body and a through-hole wherein one end of the flexible tube may be introduced; a cylindrical cap located inside the syringe barrel, equipped with a longitudinal groove along its cylindrical side, which is designed to house the aforementioned flexible tube; a preloaded spring around the rod located between the cap and the support disk; and a pressurisation device connected to the flexible tube.

主权项

1. Modified medical syringe with a flow regulator for the administration of anaesthesia, comprising: a flexible tube designed to be introduced inside the syringe barrel, which supplies a fluid; a cylindrical body located at the distal end of the piston rod, the diameter whereof is smaller than the inner diameter of the syringe barrel and larger than the diameter of the piston rod, said body being equipped with: a watertight gasket between the body and the syringe barrel; a protuberance along a semicircle on the proximal side of the body, the centre whereof is located on the axis of revolution of said body; and a through-hole between its distal side and its proximal side, designed to introduce one of the ends of the flexible tube therein, the end of the aforementioned through-hole on the proximal side of the body being placed between the protuberance and the piston rod; a cylindrical cap located inside the syringe barrel, equipped with a longitudinal groove along its cylindrical side, which is designed to house the aforementioned flexible tube, and comprises a central hole for the piston rod; a preloaded spring around the piston rod located between the cap and the support disk of the aforementioned piston, such that, when no compressive force is exerted on said spring, the proximal side of the body is in contact with the distal side of the cap and a fluid pressurisation device connected to the free end of the flexible tube.