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Syringe construction

A technology of syringes and components, applied in the field of improved syringe structure, which can solve the problems of increasing costs, etc.

Inactive Publication Date: 2008-10-08
CARDINAL HEALTH 529 LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, parylene coatings are applied by vapor deposition, which is not only an additional processing step but also adds significantly to the expense

Method used

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  • Syringe construction
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Embodiment Construction

[0011] While the invention is capable of many and different embodiments, certain preferred embodiments will be described in detail herein, it being understood that this disclosure should be considered as providing various illustrations of the principles of the invention and not limiting the invention to the ones set forth herein. specific example.

[0012] now refer to figure 1 , the syringe 10 of the present invention is shown as comprising an annular syringe body 12, a plunger 14 adapted to travel within the syringe body 12 in response to manually applied force, and a distal portion detachably attached to the syringe body 12. 18 of the circular needle 16 . The plunger 14 is basically a piston terminated by an elastomeric seal 20 . The region 22 defined by the syringe body 12, the distal portion 18 of the syringe body 12, and the distal portion of the elastomeric seal 20 may be pre-filled with a liquid 24, typically a medical solution, or may be filled by The liquid 24 is ...

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Abstract

A syringe assembly is provided comprising an annular syringe body, a plunger adapted to travel therein in response to manual force, said plunger terminating in an elastomeric seal in sealing engagement with the interior surface of the syringe body, said seal having admixed therein a lubricant capable of migrating through the elastomeric seal to bloom on the surface thereof, thereby imparting enhanced lubricity thereto reducing the movement forces necessary to enable controlled plunger movement.

Description

[0001] This application claims priority to US Provisional Patent Application No. 60 / 714,911, filed September 7, 2005. The entire disclosure of this provisional application is hereby incorporated by reference. technical field [0002] The present invention relates to improved syringe constructions, and more particularly, the present invention relates to syringe constructions with reduced plunger displacement forces. Background technique [0003] Syringes generally consist of an annular syringe body, a plunger adapted to travel within the syringe body in response to manually applied force, and an annular needle removably attached to the distal portion of the syringe body. A plunger is basically a piston terminated with an elastomeric seal. The syringe may be pre-filled, or may be filled by inserting the needle into the vial of liquid to be drawn into the syringe and withdrawing the plunger to thereby draw the liquid into the area of ​​the syringe body between the elastomeric ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/315
CPCA61M5/31513
Inventor 尤金·E·韦尔巴彻
Owner CARDINAL HEALTH 529 LLC
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