Device for the injection of a solid or semi-solid implant

US8029458B2 · kind B2 · utility

Assignee

• Société de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S) SAS · FR

Inventors

• Roland Cherif-Cheikh · Castelldefels, ES
• Christophe Aubert · Cudrefin, CH
• Thierry Rimlinger · L'Isle-d'Abeau, FR
• Fabrice Bonacci · Saint-Priest, FR
• Serge Barneaud · Cambridge, GB

Key dates

• Filing date: Nov 15, 2005
• Grant date: Oct 4, 2011
• Expiry date: Sep 5, 2026

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M37/0069
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a device which is used to inject an implant (6) into tissues (50). The inventive device is characterized in that it comprises: a main hollow body (2; 2′) having a hollow needle (4; 4′) fixed thereto, into which the implant (6) is introduced; a secondary body (26; 26′) which is disposed coaxially inside the main body (2; 2′) and which surrounds the needle (4; 4′); and a plunger rod (36; 36′) which can slide coaxially inside the hollow needle (4; 4′). The injection device (1; 1′) is arranged such that: (i) when it is pressed against the tissues (50), the main body (2; 2′) slides along the length of the secondary body (26; 26′) from a proximal position to a distal position such that the needle (4; 4′) can penetrate the tissues (50), whereby the movement of the main body (1; 1′) is accompanied by the concomitant movement of the plunger rod (36; 36′); and (ii) the plunger rod (36; 36′) remains fixed and maintains the implant (6) at the required depth in the tissues (50) until the needle (4; 4′) is removed therefrom when the main body (2; 2′) is returned from the distal position to the proximal position.