Medical introducer apparatus
US6562049B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Jun 15, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/125
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An introducer apparatus (10) comprising a pair of co-extending splittable introducer sheaths (11), (12) is disclosed. The unique properties (pushability, torqueability, length, shape, etc.) of the individual introducer sheaths yields an introducer apparatus with the additional navigational flexibility to reach a remote target that whose access would be more difficult or impossible with a single introducer sheath. One embodiment include a coaxial pair of introducer sheaths made of made of molecularly oriented (non-isotropic) polytetrafluoroethylene PTFE which are used for placement of a pacemaker or defibrillator lead into the coronary sinus. In this embodiment, the first introducer sheath (11) is introduced over a wire guide into ostium of the coronary sinus, which represents the first target site. The outer introducer sheath includes preformed bends (20) to facilitate passage through the vasculature. A second introducer sheath (12), which includes a curved distal portion (17), is introduced through the first introducer where it extends from the distal end of the outer introducer sheath to access the second, ultimate target site, such as a coronary artery branching from the coronar…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.