Introducer for an expandable vascular occlusion device

Details Introducer for an expandable vascular occlusion device Introducer for an expandable vascular occlusion device

1997-09-12

1999-04-20

Buiz, Michael

Surgery

Instruments

Internal pressure applicator

606191, A61B 1700

Patent

active

058954104

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.

REFERENCES:
patent: 4592347 (1986-06-01), Mahruki
patent: 4732152 (1988-03-01), Wallsten et al.
patent: 4994069 (1991-02-01), Ritchart et al.
patent: 5011488 (1991-04-01), Ginsburg
patent: 5226911 (1993-07-01), Chee et al.
patent: 5250071 (1993-10-01), Palermo
patent: 5312415 (1994-05-01), Palermo
patent: 5370134 (1994-12-01), Chin et al.
patent: 5601600 (1997-02-01), Ton
U.S. application No. 08/608,110, Forber, filed Feb. 28, 1996.

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