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:
Nov. 16, 1999
Filed:
Jan. 15, 1998
William Padilla, Sandy, UT (US);
Arlin Dale Nelson, Midvale, UT (US);
Merit Medical Systems, Inc., South Jordan, UT (US);
Abstract
A blood containment device for use with a vascular entry needle provides visual and tactile confirmation that a blood vessel has been properly entered. The device includes a blood visualization chamber defined by a compliant member which provides a visual indication that a needle connected to the device has accessed a selected blood vessel. The blood visualization chamber is vented to allow air to escape therefrom as it is displaced by blood entering the visualization chamber, while a gas permeable membrane in communication with the vent to prevent significant blood from escaping from the blood containment device. A sealing member formed on an outer surface at one end of the compliant member works in conjunction with the gas permeable membrane to prevent significant leakage of blood from the device. The compliant member pulsates with changes in blood pressure, thereby providing continuous tactile confirmation that the needle tip is properly positioned within the selected blood vessel. The device allows passage therethrough of an elongated medical instrument such as catheterization apparatus while preventing significant blood leakage from the device.