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:
Dec. 27, 1977
Filed:
Apr. 06, 1976
Saul Leibinsohn, Rishon Lezion, IL;
Metatech Corporation, Northbrook, IL (US);
Abstract
A pressure-indicating syringe comprises a barrel, a plunger assembly movable therein and having an outer shaft and an inner piston, finger-engaging elements on the barrel and on the plunger shaft for moving the piston to inject fluid through an apertured end wall of the barrel, and an elastic connection between the finger-engaging elements of the plunger shaft and the piston enabling the piston to be displaced relative to the shaft an amount corresponding to the pressure on the piston during the injection of the fluid, thereby providing an indication of the injection pressure. According to a further feature, the barrel includes a retaining member engagable with the plunger shaft for retaining the latter in an intermediate position with respect to the barrel, thereby enabling the device also to indicate a change in pressure in the injection compartment, and also to be used for applying a slow continuous injection.