Injection device

• US 9,731,080 B2
• Filed: 04/03/2006
• Issued: 08/15/2017
• Est. Priority Date: 04/06/2005
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Cilag Gmbh International (Johnson & Johnson)
• Inventors: Douglas Ivan, Jennings
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): Hall, Deanna K
• Application Number:
  US11/910,536
• Publication Number:
  US 20090234297A1
• Time in Patent Office: 4,152 Days
• Field of Search: 604195, 604110, 604181, 604187, 604192
• CPC Class Codes: A61M 2005/208 Release is possible only when device is pushed against the skin, e.g. using a trigger which is blocked or inactive when the device is not pushed against the skin
• CPC Class Codes: A61M 2005/2086 having piston damping means, e.g. axially or rotationally acting retarders
• CPC Class Codes: A61M 5/2033 Spring-loaded one-shot injectors with or without automatic needle insertion multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287
• 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 5/3204 Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612

Abstract

An injection device (110) comprises a housing (112) having a syringe (114) with a discharge nozzle (118). The syringe is movable between a retracted position in which the discharge nozzle is contained within the housing and an extended position in which the discharge nozzle extends from the housing. There is syringe cap (180) for enclosing the discharge nozzle. The syringe cap is removable from the syringe by rotation to the syringes. A syringe carrier (150) in the housing is adapted to restrain rotation of the syringe relative to the housing as the cap is removed.

Claims

1. An injection device comprising:

a housing comprising a conventional syringe having a syringe body defining a reservoir and terminating at one end in a discharge nozzle, the syringe being movable relative to the housing between a retracted position in which the discharge nozzle is contained within the housing and an extended position in which the discharge nozzle extends from the housing;

a housing cap secured to a syringe cap, said syringe cap enclosed within said housing cap and for enclosing the discharge nozzle, said housing cap removable from the syringe and the syringe cap removable from the discharge nozzle by rotation of said housing cap relative to the syringe; and

a syringe carrier adapted to restrain rotation of the syringe relative to the housing as the housing cap and syringe cap are removed, the syringe carrier comprising a sheath surrounding the syringe along its length;

wherein the syringe carrier comprises a grip at its proximal end adapted to restrain rotation of the syringe relative to the syringe carrier.

2. The injection device of claim 1, wherein the grip comprises at least one deformable rib.

3. The injection device of claim 1 or claim 2, wherein the syringe carrier comprises a ring through which the discharge nozzle of the syringe extends, the ring including the grip on its inner circumference.

4. The injection device of claim 1, further comprising at least one spline protruding radially from the syringe body extending at least in part along a length of the syringe body.

5. The injection device of claim 4, wherein the grip comprises at least one rib engageable with the at least one spline on the syringe body.

6. The injection device of claim 4, wherein the at least one spline is located adjacent the discharge nozzle.