Seeping flow anti-clotting blood catheter
First Claim
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1. A catheter comprising:
- an elongated tube having a distal end and a proximal end, the elongated tube comprising a porous material having an interior face and an exterior face, the interior face defining a lumen along a central axis of the elongated tube, the porous material being configured to flow a fluid substantially parallel to the central axis between the interior face and the exterior face of the porous material and to seep the fluid out of the porous material through the exterior face and interior face, a first section including a first outer lining covering the exterior face of the first section and configured to substantially limit perfusion of fluid through the exterior face of the first section, and an unlined section extending from a distal end of the first section, the interior and exterior faces of the unlined section including unlined porous material; and
a fitting coupled to the proximal end of the elongated tube, the fitting configured to flow a first fluid into the porous material and a second fluid into the lumen.
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Abstract
The device and methods described herein relate to a seeping flow catheter. The seeping flow catheter includes a porous material. The inner face of the porous material defines the lumen of the catheter. The porous material is configured such that fluid can flow along the length of the catheter, between the inner face and outer face of the porous material. As the fluid flows through the porous material, the fluid can seep into the lumen of the catheter through the inner face or out of the catheter through the outer face of the porous material. Portions of the inner or outer face can include a lining that substantial reduces the perfusion of the fluid through the lined areas.
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Citations
14 Claims
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1. A catheter comprising:
- an elongated tube having a distal end and a proximal end, the elongated tube comprising a porous material having an interior face and an exterior face, the interior face defining a lumen along a central axis of the elongated tube, the porous material being configured to flow a fluid substantially parallel to the central axis between the interior face and the exterior face of the porous material and to seep the fluid out of the porous material through the exterior face and interior face, a first section including a first outer lining covering the exterior face of the first section and configured to substantially limit perfusion of fluid through the exterior face of the first section, and an unlined section extending from a distal end of the first section, the interior and exterior faces of the unlined section including unlined porous material; and
a fitting coupled to the proximal end of the elongated tube, the fitting configured to flow a first fluid into the porous material and a second fluid into the lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- an elongated tube having a distal end and a proximal end, the elongated tube comprising a porous material having an interior face and an exterior face, the interior face defining a lumen along a central axis of the elongated tube, the porous material being configured to flow a fluid substantially parallel to the central axis between the interior face and the exterior face of the porous material and to seep the fluid out of the porous material through the exterior face and interior face, a first section including a first outer lining covering the exterior face of the first section and configured to substantially limit perfusion of fluid through the exterior face of the first section, and an unlined section extending from a distal end of the first section, the interior and exterior faces of the unlined section including unlined porous material; and
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14. A catheter comprising:
- an elongated tube having a distal end and a proximal end, the elongated tube comprising a porous material having an interior face and an exterior face, the interior face defining a lumen along a central axis of the elongated tube, the porous material being configured to flow a fluid substantially parallel to the central axis between the interior face and the exterior face of the porous material and to seep the fluid out of the porous material through the exterior face and interior face; and
a fitting coupled to the proximal end of the elongated tube, the fitting configured to flow a first fluid into the porous material and a second fluid into the lumen, the fitting including a collar disposed about a circumference of the catheter and configured to inject the first fluid into the porous material through the exterior face of the porous material.
- an elongated tube having a distal end and a proximal end, the elongated tube comprising a porous material having an interior face and an exterior face, the interior face defining a lumen along a central axis of the elongated tube, the porous material being configured to flow a fluid substantially parallel to the central axis between the interior face and the exterior face of the porous material and to seep the fluid out of the porous material through the exterior face and interior face; and
Specification