Invention Grant
- Patent Title: Syringe device having venting system
- Patent Title (中): 具有排气系统的注射装置
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Application No.: US11169345Application Date: 2005-06-29
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Publication No.: US07727195B2Publication Date: 2010-06-01
- Inventor: Paul H. Norton
- Applicant: Paul H. Norton
- Applicant Address: US PA Lionville
- Assignee: West Pharmaceutical Services, Inc.
- Current Assignee: West Pharmaceutical Services, Inc.
- Current Assignee Address: US PA Lionville
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Main IPC: A61M1/00
- IPC: A61M1/00

Abstract:
A syringe device includes a syringe tube having a distal end with a passageway in fluid communication with a cavity thereof. A plunger rod slidingly and sealingly engages within the cavity of the syringe tube. The plunger rod includes at least one aperture in fluid communication with a hollow interior of the plunger rod. A plunger tip is engaged with a distal end of the plunger rod and interacts with an inner surface of the side wall of the syringe tube to separate the cavity into first and second areas. The at least one aperture fluidly connects the hollow interior of the plunger rod and the first area of the syringe tube cavity, such that the generally hollow plunger rod interior allows air to move between an outside of the syringe device and the first area of the cavity during sliding movement of the plunger rod within the syringe tube.
Public/Granted literature
- US20060116644A1 Syringe device having venting system Public/Granted day:2006-06-01
Information query
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