초록 ▼

The invention relates to a process for manufacturing an injection device of the pre-filled type comprising producing, in a deformable plastics material, a tubular syringe body (101) equipped with an external locking element (104) suitable for deforming radially between retracted and dilated position

The invention relates to a process for manufacturing an injection device of the pre-filled type comprising producing, in a deformable plastics material, a tubular syringe body (101) equipped with an external locking element (104) suitable for deforming radially between retracted and dilated positions, producing a tubular sheath (109) equipped with an internal locking element (110, 111) paired with that of the syringe body (101), fitting the sheath (109) round the syringe body (101), by a relative sliding of these latter permitted by the radial retraction of the locking element (104) of the syringe body (101), and introducing into the syringe body (101) a rigid pre-filled container suitable for bringing the locking element (104) of the said syringe body into its dilated position, enabling an irreversible locking of the sheath (109) to be obtained once it has been brought, after injection, into an advanced, post-use protection position.

대표청구항 ▼

[ I claim:] [1.] A process for manufacturing and assembling a pre-filled injection device including an injection needle (116, 15, 23, 47), said process comprising the steps of:producing a tubular syringe body (101, 121, 1, 20, 42) of a deformable plastic material having a distal end and a proximal e

[ I claim:] [1.] A process for manufacturing and assembling a pre-filled injection device including an injection needle (116, 15, 23, 47), said process comprising the steps of:producing a tubular syringe body (101, 121, 1, 20, 42) of a deformable plastic material having a distal end and a proximal end, equipping said proximal end with finger-hold elements (105, 5, 26, 53) and equipping said distal end with an external locking element (104, 123, 7-9, 27-29, 54-56) suitable for deforming radially between a retracted position and a dilated position,producing a tubular sheath (109, 10, 31, 58) of a shape suitable for sliding along said syringe body, providing said tubular sheath with an internal locking element (110, 111, 11, 32, 59) located at a proximal end of said tubular sheath;locating said proximal end of said sheath adjacent the distal end of said syringe body and slidably inserting said sheath into said syringe body, said sliding being accommodated by radial retraction of said locking element and bringing the said proximal end of said sheath to a position adjacent to said finger-hold elements of said syringe body;introducing into said syringe body a rigid pre-filled container (114, 13, 34, 61) having an external cross-section which cooperates with the internalcross-section of said syringe body and suitable for bringing said external locking element of said syringe body into a dilated position thereby preventing further radial deformation of said locking element, and equipping said rigid container with means (119, 120; 18, 19; 37, 38; 62) for injecting liquid from said pre-filled container and locking said syringe body and said rigid container against further longitudinal movement with respect to each other.