Multi-directional microfluidic drug delivery device
First Claim
1. A microfluidic convection-enhanced-delivery (CED) device, comprising:
- a body having a tip extending distally from the body and first and second legs extending proximally from the body;
a first channel extending along the first leg, across the body, and along the tip, the first channel having a first fluid outlet port disposed in a portion of the first channel that extends along the tip;
a second channel extending along the second leg, across the body, and along the tip, the second channel having a second fluid outlet port disposed in a portion of the second channel that extends along the tip; and
a nose that is disposed on a distal end of the body and that is cone-shaped, the tip of the body protruding distally beyond a vertex of the cone-shaped nose, the nose being configured to contact tissue when the device is inserted into said tissue,wherein the legs, body, and tip are formed from a monolithic substrate and the first and second channels are formed on an outer surface of the monolithic substrate.
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Accused Products
Abstract
The methods, systems, and devices disclosed herein generally involve convection-enhanced delivery of drugs to a target region within a patient. Microfluidic catheter devices are disclosed that are particularly suitable for targeted delivery of drugs via convection, including devices capable of multi-directional drug delivery, devices that control fluid pressure and velocity using the venturi effect, and devices that include conformable balloons. Methods of treating various diseases using such devices are also disclosed, including methods of treating cerebral and spinal cavernous malformations, cavernomas, and hemangiomas, methods of treating neurological diseases, methods of treatment using multiple microfluidic delivery devices, methods of treating hearing disorders, methods of spinal drug delivery using microfluidic devices, and methods of delivering stem cells and therapeutics during fetal surgery. Methods of manufacturing such devices are also disclosed.
204 Citations
23 Claims
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1. A microfluidic convection-enhanced-delivery (CED) device, comprising:
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a body having a tip extending distally from the body and first and second legs extending proximally from the body; a first channel extending along the first leg, across the body, and along the tip, the first channel having a first fluid outlet port disposed in a portion of the first channel that extends along the tip; a second channel extending along the second leg, across the body, and along the tip, the second channel having a second fluid outlet port disposed in a portion of the second channel that extends along the tip; and a nose that is disposed on a distal end of the body and that is cone-shaped, the tip of the body protruding distally beyond a vertex of the cone-shaped nose, the nose being configured to contact tissue when the device is inserted into said tissue, wherein the legs, body, and tip are formed from a monolithic substrate and the first and second channels are formed on an outer surface of the monolithic substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A microfluidic convection-enhanced-delivery (CED) device, comprising:
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a body having a tip extending distally from the body and first and second legs extending proximally from the body; a first channel extending along the first leg, across the body, and along the tip, the first channel having a first fluid outlet port disposed in a portion of the first channel that extends along the tip; a second channel extending along the second leg, across the body, and along the tip, the second channel having a second fluid outlet port disposed in a portion of the second channel that extends along the tip; and a nose that is disposed on a distal end of the body and that is cone-shaped, the tip of the body protruding distally beyond a vertex of the cone-shaped nose, the nose being configured to contact tissue when the device is inserted into said tissue, wherein the legs, body, and tip are formed from a monolithic silicon substrate. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification