The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2011
Filed:
Mar. 06, 2003
Olivier Pessin, Grezieu la Varenne, FR;
Olivier Pessin, Grezieu la Varenne, FR;
SEDAT, Irigny, FR;
Abstract
A needle-protection device () for a syringe () having a needle (), a tubular body () and an injection plunger (). The device includes: a needle protector (); a protector support (); a spring () which presses against the support () and the protector (), the support and protector being movable relative to one another between a retracted protector position, in which the needle of the syringe is exposed and the spring is locked in compression, and a deployed protector position in which the needle is disposed inside the protector and the spring is at least partially decompressed; and a mechanism for unlocking the spring. When locked, the spring () exhibits a predetermined force which is greater than the push force required to move the plunger () along essentially all of the injection stroke thereof. The mechanism has a digital support flange () which (i) transmits to the spring a compression force, which is less than the predetermined force, as the plunger slides along the injection stroke, and (ii) transmits to the spring a compression force, which is greater than the predetermined force, when the plunger reaches the end of the injection stroke.