Small gauge needle catheterization apparatus
US7749196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | May 6, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0081
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for percutaneous catheterization. The apparatus comprises a catheter, and an inner cannula received within the lumen of the catheter. The inner cannula has a distal portion that tapers toward the distal end, and is sized to extend through the distal opening of the catheter to provide a generally smooth diametrical transition between the distal end of the catheter and the distal open end of the inner cannula. A stiffening cannula is sized to be received in the lumen of the inner catheter, and has an inner diameter sized to receive a wire guide therethrough. The stiffening cannula as a distal section of greater flexibility than the flexibility of a proximal section for providing kink resistance to the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.