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:
Apr. 06, 2004
Filed:
Jun. 12, 2002
Terje Svendsen, Asker, NO;
Syringus AS, Oslo, NO;
Abstract
An automatic needle retracting mechanism ( ) for a hypodermic syringe ( ) comprises a body ( ) which slidingly supports a needle ( ). A retainer ( ) for an actuator ( ) and the needle ( ) is kept in a retaining position by a spacer ( ), which after some time in contact with an injectant loses its mechanical strength. A filing of the needle with an injectant causes a deformation of the spacer ( ), a release of the actuator ( ) and a retracting of the retainer ( ) and needle ( ) into a needle retraction chamber ( ). The needle retracting mechanism may also include an inner sleeve ( ) which is manually movable towards the retainer ( ) for a manual release of the actuator ( ). The needle retracting mechanism may be included in a needle holder ( ) or integrated in a syringe ( ′).