Oval-shaped cardiac cannula
US5817071A · kind A · utility
49Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Jan 9, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/125
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cannula comprises a proximal end, a distal end, and a lumen extending between the proximal and distal ends, wherein at least a portion of the cannula body is non-circular in cross section, preferably oval. A cannula wherein a portion of the cannula body is oval in cross section is ideally suited in surgical procedures wherein the cannula extends through a percutaneous aperture. The oval portion of the cannula body utilizes the space of the percutaneous aperture efficiently, thereby minimizing the necessary size of the access aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.