Vascular catheter having low-profile distal end
US5203338A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1992 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Aug 14, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1063
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ultrasonic imaging catheter comprises a catheter body having a distal region and proximal region. The distal region has a reduced cross-sectional area compared to that of the proximal region, and the proximal region includes at least two lumens therethrough for accommodating a movable guidewire and a rotatable working element, respectively. The catheter body may be inserted over the moveable guidewire, with the guidewire passing through a lumen in the distal region and the guidewire lumen in the proximal region. After positioning the catheter body, the guidewire can be retracted from the distal region and into the proximal region, leaving the lumen in the distal region available for the rotatable working element. Such a construction allows over-the-wire imaging of the catheter while minimizing the width of the catheter in the distal region which remains available for placement of the working element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.