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. 29, 2014
Filed:
Jun. 20, 2012
Joan E. Spiegel, Boston, MA (US);
Alexander H. Slocum, Bow, NH (US);
Adrienne Watral, Lynnwood, WA (US);
Samuel Duffley, Billerica, MA (US);
Alexander Slocum, Jr., Huntington, WV (US);
Joan E. Spiegel, Boston, MA (US);
Alexander H. Slocum, Bow, NH (US);
Adrienne Watral, Lynnwood, WA (US);
Samuel Duffley, Billerica, MA (US);
Alexander Slocum, Jr., Huntington, WV (US);
Beth Israel Deaconess Medical Center, Boston, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A syringe having an internal pressure gauge comprises a syringe barrel; a piston within the barrel; a spring coupled to the piston at a first position of the spring, the spring having a second portion that is movable in response to fluid pressure within a syringe cavity; and a pressure gauge having an indicator correlated to a plurality of positions of the second portion of the spring to indicate a pressure of a fluid. The spring can be a bellows. The first portion of the spring can be coupled to the piston to form a sliding seal with an inner wall of the syringe, and the second portion of the spring can move longitudinally within the syringe without sealing contact.