Infusion device with preformed shape
US5554114A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Oct 20, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/091
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An infusion guidewire or catheter for introduction through a selected path in a patient's vascular system to a site in a blood vessel and for infusing a drug or agent into the blood vessel. An elongated tubular body extends between a proximal and a distal end having an infusion device lumen formed therein extending to a plurality of infusion ports formed in a distal infusion segment of the elongated tubular body. The distal infusion segment is pre-biased to assume an infusion configuration when positioned in a blood vessel that tends to present the infusion port toward the blood vessel wall in a low blood flow rate zone and defining a generally centrally disposed perfusion lumen for perfusing blood therethrough. A core wire or a guidewire is inserted through said infusion device lumen from said proximal end into said distal infusion segment for changing the configuration to allow the advancement of the infusion device through the patient's vascular system to a desired site in a blood vessel and for allowing the distal infusion segment to assume said infusion configuration on withdrawal of the core wire or guidewire from the distal infusion segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.