Apparatus with weeping tip and method of use

Details Apparatus with weeping tip and method of use Apparatus with weeping tip and method of use

2005-09-27

2005-09-27

Kennedy, Sharon (Department: 3762)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

06949087

ABSTRACT:
The invention provides surgical needles with a porous distal portion from which a liquid injectate will weep or ooze multidirectionally under injection pressure while the porous distal portion of the needle is inserted into a body surface. The porous distal portion of the needle can be fabricated from a porous carbon, metal, ceramic or polymer and preferably has a decreasing gradient of impedance to fluid flowing to the point of the needle to compensate for the falling off of injection pressure as fluid moves towards the point, thereby ensuring uniform weeping of the injectate along the injection course. The needle is adapted for attachment to a catheter or syringe. In another embodiment, a surgical assemblage is provided wherein a porous distal portion having similar fluid flow characteristics is located along the distal end of a catheter, and a needle point is attached to the distal end of the catheter (e.g., a steerable catheter) for piercing tissue. A guidance catheter can be used to direct the invention devices to a remote internal injection site. The invention devices and methods can be used to inject fluids (including those containing nucleic acids for gene therapy) into interior body walls or tissue, such as a beating heart, without substantial loss of fluid and without substantial damage to tissue caused by injectate.

REFERENCES:
patent: 1124851 (1915-01-01), Burkle
patent: 1192596 (1916-07-01), Albrecht
patent: 1370788 (1921-03-01), Good et al.
patent: 2112629 (1938-03-01), Lloyd
patent: 3076457 (1963-02-01), Copen
patent: 4186745 (1980-02-01), Lewis et al.
patent: 4256102 (1981-03-01), Monaco
patent: 4411657 (1983-10-01), Galindo
patent: 4512768 (1985-04-01), Rangaswamy
patent: 4717379 (1988-01-01), Ekholmer
patent: 4838877 (1989-06-01), Massau
patent: 5069673 (1991-12-01), Shwab
patent: 5085635 (1992-02-01), Cragg
patent: 5156597 (1992-10-01), Verreet et al.
patent: 5254106 (1993-10-01), Feaster
patent: 5380307 (1995-01-01), Chee et al.
patent: 5389074 (1995-02-01), Parker et al.
patent: 5569197 (1996-10-01), Helmus et al.
patent: 5603703 (1997-02-01), Elsberry et al.
patent: 5643228 (1997-07-01), Schucart et al.
patent: 5662619 (1997-09-01), Zarate
patent: 5713861 (1998-02-01), Vanarthos
patent: 5735831 (1998-04-01), Johnson et al.
patent: 5738649 (1998-04-01), Macoviak
patent: 5800407 (1998-09-01), Eldor
patent: 5817074 (1998-10-01), Racz
patent: 5885252 (1999-03-01), Liu
patent: 5957901 (1999-09-01), Mottola et al.
patent: 5989209 (1999-11-01), Barrett
patent: 6010495 (2000-01-01), Tilton, Jr.
patent: 6162202 (2000-12-01), Sicurelli et al.
patent: 6179816 (2001-01-01), Mottola et al.
patent: 6210376 (2001-04-01), Grayson
patent: 6224608 (2001-05-01), Ciccolella et al.
patent: 6241710 (2001-06-01), Van Tassel et al.
patent: 271775 (1988-06-01), None
patent: 699449 (1996-03-01), None
patent: 727187 (1996-08-01), None
patent: WO 90/11092 (1990-10-01), None
patent: WO 96/31247 (1996-10-01), None
patent: WO 97/18004 (1997-05-01), None
patent: WO 99/19016 (1999-04-01), None
Hansen et al., New High-Flow “Cloud” Catheter for Safer Delivery of Contrast Material, Cardiovascular Radiology, Nov. 1989, pp. 461-464, vol. 173, No. 2.
Wolff et al., “Direct Gene Transfer into mouse Muscle in Vivo,” Science 247:1465-1468 (1990).
Seeger et al., “The Cloned Genome of Ground Squirrel Hepatitis Virus is Infectious in the Animal” Proc. Natl. Acad. Sci. USA 81:5849-5852 (1984).

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