Barrier catheter apparatus and method

Details Barrier catheter apparatus and method Barrier catheter apparatus and method

2011-01-25

2011-01-25

Sirmons, Kevin C (Department: 3767)

Surgery

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

Treating material introduced into or removed from body...

C604S264000, C604S537000

Reexamination Certificate

active

07875008

ABSTRACT:
A catheter for use in delivery or withdrawal of a formulation, wherein the catheter has an outer layer comprising a bio-compatible material and a barrier layer comprising a material that provides a more effective barrier than the outer layer against inward and outward diffusion of substances that may cause destabilization of the formulation. The catheter may include a flared distal end tip to aid in the release, during a bolus delivery or catheter flush, of any obstruction situated at the distal end tip of the catheter. The catheter may also include a slit valve at the distal end tip which has one or more and, preferably a plurality of slits that may be elastically extended to an open position by the expulsion of the formulation during an IIP pump stroke. During the interval between IIP pump strokes, the slits return to a closed position and hinder the inflow of body fluid into the distal end tip.

REFERENCES:
patent: 4284081 (1981-08-01), Kasper et al.
patent: 4340615 (1982-07-01), Goodwin et al.
patent: 4921483 (1990-05-01), Wijay et al.
patent: 4966579 (1990-10-01), Polaschegg
patent: 5195960 (1993-03-01), Hossain et al.
patent: 5916192 (1999-06-01), Nita et al.
patent: 6004310 (1999-12-01), Bardsley et al.
patent: 6010521 (2000-01-01), Lee et al.
patent: 6096012 (2000-08-01), Bogert et al.
patent: 6358238 (2002-03-01), Sherry
patent: 6663606 (2003-12-01), Barry et al.
patent: 2002/0010416 (2002-01-01), Uflacker
Office Action dated Apr. 24, 2003 from related U.S. Appl. No. 10/036,081.
Office Action dated Sep. 24, 2003 from related U.S. Appl. No. 10/036,081.
Office Action dated Jun. 18, 2004 from related U.S. Appl. No. 10/036,081.
Office Action dated Dec. 15, 2004 from related U.S. Appl. No. 10/036,081.
Office Action dated Jun. 2, 2005 from related U.S. Appl. No. 10/036,081.
PCT International Search Report as issued in International Application No. PCT/US02/28173, Mailing date Mar. 11, 2003.

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