Variable stiffness catheter
US5308342A · kind A · utility
211Cited by
16References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1991 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Aug 7, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/0054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter composed of an outer coaxial tube or relatively high flexibility and three tandemly disposed inner coaxial tube segments that vary in stiffness with the stiffest being located at the proximal end of the catheter and the least stiff ending proximal of the proximal end of the catheter. The catheter thus has four regions of different stiffness/flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.