Inner and outer telescoping catheter delivery system
US7717899B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2002 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Jul 23, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0161
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter assembly employs an outer catheter with a pre-formed distal end and an open lumen. An inner catheter having an open lumen and a pre-formed distal end is movably disposed within the outer catheter. Relative rotation and extension of the inner and outer catheters provides the distal end of the catheter assembly with an adjustable range of two- and three-dimensional shapes. The inner catheter can include sections of varying stiffness, such that extension of the inner catheter within the outer catheter modifies the shape of the outer catheter's pre-formed distal end. The adjustable shaping of the catheter assembly's distal tip provides an improved system for locating and cannulating cardiac venous structures, particularly the coronary sinus via the right atrium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.