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:
Mar. 04, 1986
Filed:
Feb. 27, 1984
A Gerrit Crawford, North Hollywood, CA (US);
Other;
Abstract
The present invention is a bladder-type syringe which a user employs to collect blood samples or deliver prefilled medications or function as a passive indicator of balloon or cuff inflation on balloon-tipped catheter or endotracheal tubes. The bladder-type syringe includes an elongated bladder and a hypodermic needle. The elongated bladder is formed out of a high gas-diffusion barrier film and has an open end and a closed end. The hypodermic needle, which the user employs to penetrate into a blood vessel, has a sharp distal end and a blunt proximal end. A coupling device fixedly, but detachably, and fluidly couples the elongated bladder at its open end to the hypodermic needle at its blunt proximal end which extends into the coupling device to reduce its dead space. The bladder-type syringe also includes an elongated member having a first end and a second end and also having a flat surface with a keeper slot at its first end. The elongated bladder is fixedly, but detachably, coupled to the keeper slot. The user is able to support the elongated bladder and isolate any air bubbles contained in the elongated bladder. The coupling device is mechanically coupled to the elongated member at its second end so that the elongated bladder is suspended above the flat surface of the elongated member. The elongated bladder has longitudinal convolutions whereby the amount of gas contained within the elongated bladder is minimized when the elongated bladder is empty.