Intravascular catheter with a nontraumatic distal tip
US5234416A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1991 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Jun 6, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/32
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intravascular catheter such as a guiding catheter of composite construction having a nontraumatic distal tip comprising a proximal elastomeric tubular element and a distal elastomeric tubular element formed of softer material that the proximal section. The proximal tubular section of the distal tip preferably has a radiopaque material incorporated therein to enable the distal tip to be fluoroscopically observable when in place within a patient. The shaft of the catheter, which exhibits excellent torquability and pushability, is formed with a very thin wall. The catheter shaft includes an inner tubular member of braided polymeric fibrous strands impregnated with a thermoset polyurethane and having an outer jacket or coating of thermoplastic polyurethane secured to the braided tubular member. In some embodiments it is preferred to include a lubricous liner within the braided tubular member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.