Pen needle assembly for preventing under-torquing and over-torquing of pen needle
First Claim
Patent Images
1. A hub assembly for an injection apparatus, comprising:
- a cover;
a hub disposed in said cover and having first and second ends and outer and inner surfaces, an opening being formed at said first end and threads being formed on said inner surface proximal said second end to facilitate connecting said hub assembly to a cartridge of said injection apparatus; and
a ring assembly disposed inside said hub, wherein said ring assembly includes;
a first ring disposed proximal said second end of said hub;
a second ring; and
a plurality of living hinges connecting said first ring to said second ring;
wherein when said hub assembly is properly connected with the cartridge, continued rotation of said cover with respect to the cartridge causes said second ring to move to a position proximal said second end of said hub and said first ring to move away from said second end of said hub to create audible indicia with said threads.
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Accused Products
Abstract
A pen needle hub and cover for a pen needle assembly that provides tactile and/or audible indicia of proper attachment between the hub of the pen needle and the pen is provided. Such indicia substantially prevent under- and over-torquing of the pen needle. The tactile indicia may include a user sensing a wave of a torque of peak value followed by a torque of lesser value.
32 Citations
8 Claims
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1. A hub assembly for an injection apparatus, comprising:
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a cover; a hub disposed in said cover and having first and second ends and outer and inner surfaces, an opening being formed at said first end and threads being formed on said inner surface proximal said second end to facilitate connecting said hub assembly to a cartridge of said injection apparatus; and a ring assembly disposed inside said hub, wherein said ring assembly includes; a first ring disposed proximal said second end of said hub; a second ring; and a plurality of living hinges connecting said first ring to said second ring; wherein when said hub assembly is properly connected with the cartridge, continued rotation of said cover with respect to the cartridge causes said second ring to move to a position proximal said second end of said hub and said first ring to move away from said second end of said hub to create audible indicia with said threads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification
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Current AssigneeEmbecta Corporation
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Original AssigneeBecton, Dickinson & Co
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InventorsRuan, Tieming, Raj, Abhijitsinh S., Horvath, Joshua D., Gold, Adam
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Primary Examiner(s)Sirmons, Kevin C
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Assistant Examiner(s)CARPENTER, WILLIAM R
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Application NumberUS14/162,416Publication NumberTime in Patent Office719 DaysField of Search604/192, 604/263, 604/198, 604/240, 604/241, 604/242, 604/197, 604/243US Class Current1/1CPC Class CodesA61M 2005/3254 Shielding of proximal needl...A61M 2205/581 by audible feedbackA61M 2205/582 by tactile feedbackA61M 5/24 Ampoule syringes, i.e. syri...A61M 5/3202 Devices for protection of t...A61M 5/3213 Caps placed axially onto th...A61M 5/3293 characterised by features o...A61M 5/343 Connection of needle cannul...A61M 5/347 rotatable, e.g. bayonet or ...A61M 5/5086 for indicating if defective...
