Tip configurations for multi-lumen catheter
US9839763B2 · kind B2 · utility
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137References
13Claims
0Family size
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Key dates
| Filing date | Nov 17, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jul 12, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0413
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Multi-lumen catheters with improved tip configurations, including a triple-lumen catheter which may be useful for apheresis. In one variation, the catheter has three lumens with distal openings angularly spaced apart and staggered axially with respect to one another. In another variation, the catheter has two lumens exiting distally and one centrally positioned lumen exiting proximally. A third variation is a catheter with a single distal opening and two proximal openings. The staggered lumen openings along the axial length of the catheter may decrease recirculation while maximizing flow rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.