Pleural biopsy and brushing needle
OwnerMohamed Bakryinventor
Life of this patent
Estimating the term…
Abstract
A biopsy needle and method of using the same. The biopsy needle includes a pair of articulating members that can be moved between a retracted position where the articulating members are contained within the biopsy needle and an extended position where the articulating members extend outwardly from the distal end of the biopsy needle into the pleural cavity of a patient. Once extended, the articulating members have operative surfaces that contact the parietal pleura of the patient such that a biopsy sample can be obtained as the operative surfaces are moved in contact with the parietal pleura. The operative surfaces may be a brush blade or a knife blade. A passageway within the interior of the biopsy needle allows removal of fluids from the patient.
Claims33
A biopsy needle for obtaining a sample of tissue within the plural cavity of a patient, said biopsy needle comprising a outer tube having a distal end, a proximal end and a central canal therethrough, said distal end having at least one opening formed in said outer tube proximate the distal end thereof, an inner tube interfitted within said outer tube, said inner tube having a distal end adapted to be located at about the distal end of said outer tube and a proximal end accessible to a user at the proximal end of said outer tube, said inner tube being axially movable within said outer tube, at least one articulating member affixed to the distal end of said inner tube, said at least one articulating member being movable between a retracted position within said outer tube and an extended position where said at least one articulating member extends outwardly through said at least one opening in said outer tube.
A biopsy needle for obtaining a sample of tissue within the plural cavity of a patient, said biopsy needle comprising a outer tube having a distal end, a proximal end and a central canal therethrough, said distal end having at least one opening formed in said outer tube proximate the distal end thereof, an inner tube interfitted within said outer tube, said inner tube having a distal end adapted to be located at about the distal end of said outer tube and a proximal end accessible to a user at the proximal end of said outer tube, said inner tube being axially movable within said outer tube, an end tube affixed to the distal end of said inner tube, said end tube having at least one articulating member movably affixed thereto, said at least one articulating member being movable between a retracted position within said outer tube and an extended position where said at least one articulating member extends outwardly through said at least one opening in said outer tube.
A biopsy needle as defined in claim 18 wherein proximal end of said inner tube is enlarged to form a handle to allow manipulation of said inner tube by user.
A method of obtaining a sample of tissue from the pleural cavity of a patient, said method comprising the steps of:
- providing a needle having a distal end with at least one articulating member movable between a retracted position to an extended position extending outwardly from the distal end of the needle,
- inserting the needle into a patient such that the distal end of the needle is locate within the pleural cavity of a patent, extending the at least one articulating member outwardly from the distal end of the needle,
- adjusting the location of the needle to cause the articulating member to contact the parietal pleura of a patient,
- moving the at least one articulating member to pick up a sample of the pleura onto the at least one articulating member, retracting the at least one articulating member to the retracted position, removing the needle from the patient to collect a sample of the pleura adhered to the at least one articulating member.
Dependencies are inferred from the claim text.