Balloon catheter assembly with selectively occluded and vented lumen
US5807328A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Apr 1, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1052
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter assembly having a selectively occluded and vented lumen is provided. The catheter includes an obturator for preventing the back flow of fluid from the distal tip of the catheter into a balloon provided on the body of the catheter. The catheter has at least one groove for venting the balloon during the process of inserting the catheter assembly into fluid under pressure. The combination of the obturator and the venting groove prohibits premature inflation of the balloon by pressurized fluid entering the distal end of the catheter and also enables for the venting of any air entrapped inside the balloon prior to inflation thereof. When incorporated into a retrograde cardioplegia solution catheter, this structure dramatically reduces the force needed to insert the catheter assembly into the coronary sinus and also reduces trauma to the tissue of the coronary sinus during the insertion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.