Introducer for an expandable vascular occlusion device
US5895410A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Sep 12, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/1205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An introducer for introducing an expandable implantable device into a catheter includes an outer tube and an inner core which slides in the outer tube. The distal end of the core has a tubular configuration with a slit which allows it to expand radially to grip an end of the device. The distal end of the core holding the device is pulled into the distal end of the outer tube which further tightens the grip on the device. A handle is then preferably attached to the proximal end of the core which extends beyond the proximal end of the outer tube to prevent the core from moving distally and releasing the device. The device remains in its relaxed condition attached to the introducer and mostly outside of it until use. At that time the core is moved proximally which pulls the device inside the outer tube and into its stretched condition as it does so. As the distal end of the inner core exits the proximal end of the outer tube, the end of the device is released and remains mostly inside of the outer tube in its stretched condition. The distal end of the introducer is then inserted into a catheter and a pushrod used to push the device distally from the introducer into the catheter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.