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:
Jun. 13, 1989
Filed:
Nov. 13, 1987
Carl W Peterson, Blackstone, MA (US);
Mansfield Scientific, Inc., Mansfield, MA (US);
Abstract
A pressure controller device for selectively applying and relieving a measured pressure upon a closed volume of fluid includes a housing, a barrel defining a fluid chamber and a plunger for axial movement within the fluid chamber for applying measured pressure to a fluid therewithin. The barrel has a port for delivery of fluid at measured pressure, and moves axially within the housing in a first axial direction in response to increased pressure within the chamber. The housing and barrel are biased apart, e.g., by a first biasing spring acting with a known force upon the barrel in an opposed, second axial direction. Indicia upon the barrel and housing indicate the relative positions of barrel and housing. As pressure in the fluid chamber increases, the barrel is urged in a first direction with a force proportional to the measured pressure to overcome the known force in the second direction, the relative positions of barrel and housing providing a measure of the pressure within the fluid chamber. An inflating and deflating assembly for balloon dilation, consisting, in combination, of the pressure controller device and a balloon catheter, is also described.