| 摘要 |
A system for treating vasculature of a patient includes a microcatheter extending through an optional aspiration catheter, and a guidewire subassembly extending through and beyond the microcatheter. The guidewire subassembly consists essentially of a (i) guidewire core having a narrowed portion, (ii) a fluid transport element coupled to and extending around the narrowed portion of the guidewire core, the fluid transport element defining at least one inlet opening and at least one outlet opening spaced from the inlet opening along a portion of its length, with a fluid flow path being defined between the fluid transport element and the microcatheter, and (iii) a conical seal interposed between the guidewire core and the support element for sealing therebetween and ensuring that infusate within the microcatheter is directed into the blood vessel through the inlet opening(s), the fluid flow path, and the outlet opening(s). |
| 主权项 |
1. A system for use in a blood vessel in conjunction with an infusate, the system comprising:
a microcatheter having an inner surface and a distal end, and said microcatheter providing a lumen through which the infusate can flow; and a guidewire subassembly extending through and beyond said distal end of said microcatheter, and longitudinally displaceable relative to said microcatheter, said guidewire subassembly consisting essentially of: (i) a guidewire core, (ii) a fluid transport element coupled to and extending around said guidewire core, said fluid transport element defining at least one inlet opening and at least one outlet opening spaced from said at least one inlet opening along a portion of its length, a fluid flow path being defined between said guidewire core and said fluid transport element, and (iii) a conical seal interposed between said fluid transport element and said microcatheter, for sealing therebetween and ensuring that infusate within said microcatheter is directed into said blood vessel only through said at least one outlet opening, wherein infusate can flow through said lumen of said microcatheter into said inlet opening, along said fluid flow path, and out of said outlet opening. |
