Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-11-01
1997-12-23
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604264, 604 49, 606196, A61M 2500
Patent
active
057002525
ABSTRACT:
Disclosed is an improved nasogastric tube having a coupled or integrally formed flexible tip which facilitates insertion and advancement of the tube through a nasopharynx and into a stomach of a patient while reducing the risk of trauma to the nasal cavity and perforation of the esophagus and other soft tissue. Geometry and material of the tip and tube body are selected so that the tip preferentially buckles before the tube body upon meeting body structure during advancement of the tube. Buckling of the tip passively steers the tip and tube body through the nasal cavity along the esophageal lumen, unlike conventional nasogastric tubes which tend to displace or perforate proximate body structure. Tip geometries include those which are cylindrical, frustoconical, tapered, bulbous, pleated and necked. Tips may be hollow or solid, symmetrical or asymmetrical, and may include a reinforcement member to modify the column strength thereof. One or more transition zones may be provided to transition between tube structures having differing column strengths.
REFERENCES:
patent: 2211975 (1940-08-01), Hendrickson
patent: 2268321 (1941-12-01), Flynn
patent: 4385635 (1983-05-01), Ruiz
patent: 4402684 (1983-09-01), Jessup
patent: 4516970 (1985-05-01), Kaufman et al.
patent: 4559046 (1985-12-01), Groshong et al.
patent: 4563181 (1986-01-01), Wijayarathna et al.
patent: 4594074 (1986-06-01), Andersen et al.
patent: 4735607 (1988-04-01), Keith, Jr.
patent: 4863442 (1989-09-01), DeMello et al.
patent: 4886067 (1989-12-01), Palermo
patent: 4886506 (1989-12-01), Lovgren et al.
patent: 4888146 (1989-12-01), Dandeneau
patent: 4957110 (1990-09-01), Vogel et al.
patent: 4985022 (1991-01-01), Fearnot et al.
patent: 5017193 (1991-05-01), Fields
patent: 5078702 (1992-01-01), Pomeranz
patent: 5100385 (1992-03-01), Bromander
patent: 5383852 (1995-01-01), Stevens-Wright
patent: 5560747 (1996-10-01), McCue et al.
Thomas J. Lardner et al., "An Introduction To The Mechanics of Solids", Second Edition (McGraw-Hill, Inc.) (1978), 582-590 and 595-596.
Counterpart PCT International Application No. PCT/US96/17496 IPEA Search Report (actual completion date 26 Feb. 1997).
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