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US 12,721,980 B2Granted
Devices and systems for access and navigation of cerebrospinal fluid space
AssigneePharaoh Neuro, Inc.
InventorAbhi Vase
Life of this patent
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Abstract
The present disclosure relates to accessing, removing, exchanging and recirculating cerebrospinal fluid (CSF). Devices, systems and methods disclosed herein are used to safely and efficiently navigate the space at and around the brain and spinal cord where the CSF flows through the body, also known as the CSF space.
Claims13
A catheter comprising:
- a proximal subassembly defining two proximal lumens, a proximal subassembly coil having a first pitch, and a plurality of first openings each extending through a wall of the proximal subassembly and disposed between adjacent coil windings of the proximal subassembly coil;
- a distal subassembly defining a single distal lumen, a distal subassembly coil having a second pitch which is larger than the first pitch, and a plurality of second openings each extending through a wall of the distal subassembly and disposed between adjacent coil windings of the distal subassembly coil, wherein the plurality of second openings are arranged only in an alternating fashion on a top and a bottom portion of the catheter and each have a two coil pitch spacing;
- wherein the proximal subassembly coil and the distal subassembly coil are separate and discontinuous with one another;
- and
- wherein the distal subassembly coil is embedded in the wall of the distal subassembly.
2 more elements
A catheter comprising:
- a proximal subassembly defining two proximal lumens, a proximal subassembly coil having a first pitch, and a plurality of first openings each extending through a wall of the proximal subassembly and disposed between adjacent coil windings of the proximal subassembly coil;
- a distal subassembly defining a single distal lumen, a distal subassembly coil having a second pitch which is larger than the first pitch, and a plurality of second openings each extending through a wall of the distal subassembly and disposed between adjacent coil windings of the distal subassembly coil, wherein the plurality of second openings are arranged only in an alternating fashion on a top and a bottom portion of the catheter and each have a two coil pitch spacing;
- wherein the proximal subassembly coil is formed from a first wire;
- wherein the distal subassembly coil is formed from a second wire different from the first wire;
- wherein the distal subassembly coil is embedded in the wall of the distal subassembly, and wherein the first pitch is in a range from approximately 0.01 inches to approximately 0.03 inches.
2 more elements
A catheter comprising:
- a proximal subassembly defining two proximal lumens, a proximal subassembly coil having a first pitch, and a plurality of first openings each extending through a wall of the proximal subassembly and disposed between adjacent coil windings of the proximal subassembly coil;
- a distal subassembly defining a single distal lumen, a distal subassembly coil having a second pitch which is larger than the first pitch, and a plurality of second openings each extending through a wall of the distal subassembly and disposed between adjacent coil windings of the distal subassembly coil, wherein the plurality of second openings are arranged only in an alternating fashion on a top and a bottom portion of the catheter and each have a constant spacing;
- wherein the proximal subassembly coil and the distal subassembly coil are separated from one another;
- wherein the first pitch is in a range from approximately 0.01 inches to approximately 0.03 inches;
- wherein the second pitch is in a range from approximately 0.06 inches to approximately 0.07 inches;
- and
- wherein the distal subassembly coil is embedded in the wall of the distal subassembly.
4 more elements
Dependencies are inferred from the claim text.