Device for injecting a dose of liquid in particular medicinal liquid

• US 20040116874A1
• Filed: 09/11/2003
• Published: 06/17/2004
• Est. Priority Date: 01/07/2000
• Status: Active Grant

• Current Assignee: Glaxo Group Limited (Glaxosmithkline Holdings Ltd.)
• Original Assignee: Glaxo Group Limited (Glaxosmithkline Holdings Ltd.)
• Inventors: Steimer, Benoit, Lourenco, Armindo
• Granted Patent: US 7,094,224 B2
• Time in Patent Office: Days
• US Class Current: 604/227
• CPC Class Codes: A61M 2005/3109 Caps sealing the needle bore by use of, e.g. air-hardening adhesive, elastomer or epoxy resin
• CPC Class Codes: A61M 2005/3118 via the distal end of a syringe, i.e. syringe end for mounting a needle cannula
• CPC Class Codes: A61M 2005/3121 via the proximal end of a syringe, i.e. syringe end opposite to needle cannula mounting end
• CPC Class Codes: A61M 5/3135 characterised by constructional features of the proximal end
• CPC Class Codes: A61M 5/3202 Devices for protection of the needle before use, e.g. caps A61M5/50 takes precedence; for infusion spikes A61M5/1626; protectors for sharps A61B50/3001
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
• CPC Class Codes: A61M 5/5086 for indicating if defective, used, tampered with or unsterile

Abstract

An injection device includes a syringe body tubular element (9) provided with finger-pressing members (23) for holding the injection device to inject a dose of liquid, in particular medicinal liquid. The finger-pressing members consist of a flange (23), provided with an upper surface and a lower surface, including two portions with symmetrical outline (50, 51), called gripping portions, having lower support surfaces for the user'"'"'s fingers, and between the support surfaces, two portions with diametrically opposed symmetrical outlines (52), called indexing portions, including in the extension of the lower surface of the flange, a lower surfaces having a convex profile formed by two slopes symmetrical relative to a longitudinal axis.

Claims

1. An injection device comprising a syringe (1) and an assembly for protecting said syringe comprising a tubular protective case (7) provided with finger rest components (23) designed for gripping said injection device with a view to injecting a dose of liquid, in particular a medicinal liquid, wherein said injection device has finger rest components consisting of a collar (23), provided with an upper surface and a lower surface, including two portions with a symmetrical outline (50, 51), called gripping portions, having lower supporting surfaces for the user'"'"'s fingers, and between said supporting surfaces, two portions with diametrically opposed symmetrical outlines (52, 53), called indexing portions, including in the extension of the lower surface of said collar, a lower surface having a convex profile formed by two slopes symmetrical with respect to the longitudinal axis.

2. The injection device as claimed in claim 1, wherein each indexing portion (52, 53) of the collar (23) has a lower surface having a curved profile with a convex rounded form.

3. The injection device as claimed in either of claims 1 or 2, wherein each indexing portion (52, 53) of the collar (23) has the form of an undulation defining an indentation with a concave form.

4. The injection device-as claimed in claim 3, comprising a protective cap (81) capable of covering the rear section of the protective case (7) of the syringe (1) so as to become butted up against the collar (23), wherein said protective cap (8) has a peripheral wall provided with an end section comprising, for each indexing portion (52, 53) of the finger rest collar (23), a peripheral wall portion (82), called the assembly portion, having a curved profile with a convex rounded form complementary to the upper surface of said indexing portion, adapted so as to fit into the latter.

5. The injection device as claimed in claim 4, wherein the protective cap (81) includes at least one internal component (83, 84) for locking in translation, projecting with respect to the internal surface of the peripheral wall of said cap, the protective case (7) of the syringe (1) having a peripheral wall of which the outer surface has, in a position mating with each of said means for locking in translation, a recess (80) capable of housing the latter.

6. The injection device as claimed in claim 5, wherein the means for locking the protective cap (81) in translation consist of two diametrically opposed internal catches (83, 84), each recess of the syringe body (1) consisting of an opening (80) capable of housing one of the said catches.