Catheter assembly for intracranial treatment using dual lumens
First Claim
1. A catheter assembly for intracranial treatment of a patient comprising:
- an outer catheter having a proximal portion, a first lumen in communication with respect to a first opening and at least one aperture, and a second lumen in communication with respect to a second opening, each lumen having a channel with a substantially circular cross-section and the first and second openings being distal to the proximal portion; and
an inner catheter sized to be slidably, removably received coaxially within the first lumen and including at least one passageway and at least one port in communication with respect to the passageway for transferring at least one fluid with a tissue region of the brain of the patient.
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Accused Products
Abstract
A catheter assembly is provided for intracranial treatment having outer and inner catheters. The outer catheter has a first lumen communicating between a first opening and at least one aperture and a second lumen in communication with a second opening. The first and second openings are distal to the proximal portion of the outer catheter. The inner catheter, preferably a micro-dialysis catheter, is sized to be received within the first lumen and includes at least one passageway in communication with at least one port for transfer of a fluid with a tissue region in the brain of the patient. The assembly preferably also includes a stylet sized to be received within the second lumen to provide rigidity to the outer catheter for its precise positioning within the brain. The outer catheter can include an element that is preferably a contact for monitoring brain activity. A method of transferring a fluid with a brain tissue region is also disclosed.
76 Citations
31 Claims
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1. A catheter assembly for intracranial treatment of a patient comprising:
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an outer catheter having a proximal portion, a first lumen in communication with respect to a first opening and at least one aperture, and a second lumen in communication with respect to a second opening, each lumen having a channel with a substantially circular cross-section and the first and second openings being distal to the proximal portion; and an inner catheter sized to be slidably, removably received coaxially within the first lumen and including at least one passageway and at least one port in communication with respect to the passageway for transferring at least one fluid with a tissue region of the brain of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A depth probe for intracranial treatment of a patient comprising:
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a body extending from a proximal end to a distal end, the body having first and second openings, an axis and at least one aperture; a first lumen defined by the body in communication with respect to the first opening and the aperture, the body being flexibly deformable such that the body can be selectively configured to form a bend proximal to the first opening to position the first lumen such that the first opening is in axial alignment with the distal end, the first lumen being sized to slidably, removably receive coaxially an inner catheter adapted to transfer fluids with a tissue region of the brain of the patient and having a channel with a substantially circular cross-section; a second lumen defined by the body in communication with respect to the second opening, the second lumen being sized to receive a stylet adapted to facilitate insertion of a distal portion of the body into the tissue region and having a channel with a substantially circular cross-section; and a proximal portion at the proximal end, the openings being distal to the proximal portion and substantially proximally spaced from the distal portion. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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Specification