Access needle pressure sensor device and method of use
AssigneeUniversity of Virginia Patent Foundation
InventorsSrijoy Mahapatra, George Gillies
Life of this patent
Estimating the term…
Abstract
A tool and method of positioning and delivering medical devices and therapeutics within the pericardial space, as well as other body part or space. A needle is inserted into the chest through a sub-xiphoid puncture, and the pressure within the needle is monitored manometrically or otherwise sensed as the needle is advanced towards the pericardial space. By reading the pressure within the needle while it is advanced, the clinician is able to know that he or she is avoiding insertion of it into organs or spaces not intended to be the target location. In addition the retractable sharp edge allows the operator to access the space and cut tissue but do so safely by retracting the sharp edge.
Claims20
A system for accessing one or more locations of a subject, said device comprising:
- an elongated member having a distal end and a proximal end;
- a pressure sensor in communication with said elongated member;
- a processor configured to:
- receive sensed information from said pressure sensor, and
- to detect a change in a sensed pressure frequency based on the sensed information;
- a reading system configured to present the pressure frequency to a user;
- and
- an alarm that is configured to provide an alert in response to a change in the sensed pressure frequency.
A method for accessing one or more locations of a patient using an elongated member associated with a pressure sensor, said method comprising:
- inserting the elongated member into the patient's body and accessing the one or more locations;
- sensing pressure information in the one or more locations with the pressure sensor associated with the elongated member;
- determining pressure frequency information in said one or more locations based on the pressure information;
- and
- at least one of presenting the pressure frequency information to a user such that changes in the pressure frequency can be observed by the user, and providing an alarm based on changes in the pressure frequency information.
Dependencies are inferred from the claim text.