Catheter with flexible side port entry
US5328472A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Jul 27, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49844
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved balloon catheter is disclosed which is comprised of two jacketed spring coils placed end-to-end and joined by a linking element which contains a lumen communicating between the inflation lumens formed by the two spring coils. A side port entry to a guidewire lumen, which extends through the distal coil to the distal end of the catheter, is located in the transition region formed by the linking element. The linking element may include two polyimide tubes or may be a multilumen insert. The catheter is stiffened by a core wire which is bonded directly to the spring coils. A catheter comprised of a single spring coil with a side port entry in the coil is also disclosed, and a method and apparatus for crimping the coil to create the entry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.