Dispositif d'avancement pas a pas du piston de seringues par double vis coaxiale avec controle du debit d'injection. application aux injections medicamenteuses intra-dermiques repetitives

Device for step-by-step advance of syringe plungers by means of a double coaxial screw with control of the injection rate. Application to repetitive intradermic medicinal injections

  • Inventors:
  • Assignees: Hazon Bernard
  • Publication Date: December 19, 1986
  • Publication Number: FR-2583291-A1

Abstract

<P>APPAREIL A MAIN COMPORTANT DEUX VIS SANS FIN DE PAS DIFFERENT REALISANT UNE DEMULTIPLICATION IMPORTANTE DE LA TRANSMISSION DU DOIGT DE L'OPERATEUR A CELLE DU PISTON D'UNE SERINGUE A USAGE UNIQUE, AVEC CONTROLE DES FRACTIONS DE TOUR DE LA VIS SANS FIN FINALE AU MOYEN D'UN FREIN VARIATEUR CYCLIQUE DU COUPLE RESISTANT.</P><P>LE CONTROLE DE LA QUANTITE INJECTEE ET DE LA VITESSE D'INJECTION REND LES INJECTIONS INTRA-DERMIQUES QUASI INDOLORES.</P>
Hand apparatus including two endless screws with different pitches producing a large gearing down of the transmission of the finger of the operator to that of the plunger of a single-use syringe, with control of the fractions of a turn of the final endless screw by means of a brake which cyclically varies the resistive couple. The control of the injected quantity and the speed of the injection makes intradermic injections almost painless. <IMAGE>

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