Transseptal puncture needles and needle assemblies

Details Transseptal puncture needles and needle assemblies Transseptal puncture needles and needle assemblies

2004-09-22

2009-12-22

Lucchesi, Nicholas D (Department: 3763)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S272000, C606S185000

Reexamination Certificate

active

07635353

ABSTRACT:
The instant invention is directed toward transseptal puncture needles and transseptal puncture needle assemblies. More specifically, it relates to curved transseptal puncture needles and needle assemblies that facilitate insertion through curved transseptal introducers. Each curved transseptal puncture needle includes a needle tip with a tangential back bevel configuration, a reverse tangential back bevel configuration, or a conical reverse bevel configuration. The axial orientation of the needle tip relative to the needle curvature, whether on the concave side or convex side of the curved transseptal puncture needle, provides additional benefits. The leading edge of the needle tip is located at a distal end of an inner needle tube, and the leading edge of the needle tip may be positioned away from an outer surface of the inner needle tube and adjacent to an inner surface of the inner needle tube.

REFERENCES:
patent: 5281218 (1994-01-01), Imran
patent: 5403311 (1995-04-01), Abele et al.
patent: 5405376 (1995-04-01), Mulier et al.
patent: 5431649 (1995-07-01), Mulier et al.
patent: 5507802 (1996-04-01), Imran
patent: 5628734 (1997-05-01), Hatfalvi
patent: 5807395 (1998-09-01), Mulier et al.
patent: 5906613 (1999-05-01), Mulier et al.
patent: 5945070 (1999-08-01), Kath et al.
patent: 6053904 (2000-04-01), Scribner et al.
patent: 6958056 (2005-10-01), Kadziauskas et al.
International Standard: Steril Hypodermic Needles for Single Use, ISO Reference No. 7864:1993(E).

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