Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
1998-02-10
2001-04-10
Seidel, Richard (Department: 3463)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S164030, C604S165010, C604S506000
Reexamination Certificate
active
06213988
ABSTRACT:
BACKGROUND OF THE INVENTION
Introducers for implantable leads and catheters typically include a dilator and an associated introducer sleeve, through which the lead or catheter is to be inserted. Conventional designs of lead and catheter introducers are disclosed in U.S. Pat. No. 4,306,562 issued to Osborne, U.S. Pat. No. 4,596,559 issued to Fleischhacker and U.S. Pat. No. 4,166,469 issued to Littleford. In conjunction with such introducers, it has become common to include a hemostasis valve. Introducers including hemostasis valves are illustrated in U.S. Pat. No. 5,672,158 issued to Okada et al., U.S. Pat. No. 5,098,393 issued to Amplatz et al. and U.S. Pat. No. 5,312,355 issued to Lee. In all such cases, the hemostasis valve engages the circumference of the lead or catheter to be introduced.
SUMMARY OF THE INVENTION
The present invention is directed toward a substantially simplified lead or catheter introducer including an external hemostasis clip as a substitute for the more conventional hemostasis valve. The hemostasis clip, rather than engaging the circumference of the lead or catheter compresses the introducer sleeve around the external circumference of the lead or catheter. In its preferred embodiments, the clip is configured so that it may be removed from the sleeve, prior to the sleeve being removed from the catheter or lead body by means of either slitting or tearing the introducer sleeve.
REFERENCES:
patent: 4166469 (1979-09-01), Littleford
patent: 4306562 (1981-12-01), Osborne
patent: 4596559 (1986-06-01), Fleischhacker
patent: 4744788 (1988-05-01), Mercer, Jr.
patent: 5098393 (1992-03-01), Amplatz et al.
patent: 5312355 (1994-05-01), Lee
patent: 5672158 (1997-09-01), Okada et al.
patent: 5730756 (1998-03-01), Kieturakis et al.
patent: 5755693 (1998-05-01), Walker et al.
Betz Judith
Laske Timothy G.
McIvor Michael E.
Morris Mary M.
Duthler Reed A.
Hayes Michael J.
Medtronic Inc.
Patton Harold R.
Seidel Richard
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