Nasogastric tube
AssigneeNutriseal Limited Partnership
InventorsDoron Besser, Guy Ben Ezra, Avinoam Nevler, Orit Shaked, Eyal Haytman
Life of this patent
Estimating the term…
Abstract
A system comprising: a nasogastric tube comprising: (a) a main lumen having one or more proximal connectors for connecting to a source of substances or pressure; (b) at least four vacuum lumens peripherally surrounding said main lumen; and (c) at least four suction ports for sealingly drawing an inner wall of an esophagus thereagainst, each of said at least four suction ports associated with a different one of said at least four vacuum lumens, wherein said at least four suction ports are distributed between at least two different locations along a longitudinal axis of said nasogastric tube.
Claims20
A system comprising:
- a tube comprising:
- (a) a main lumen having one or more proximal connectors for connecting to a source of substances or pressure;
- (b) at least six discrete vacuum lumens peripherally surrounding said main lumen;
- (c) a first set of at least three suction ports for circumferentially sealingly drawing an inner wall of an esophagus thereagainst, each of said first set of at least three suction ports associated with a different one of said at least six discrete vacuum lumens and peripherally distributed around said main lumen in a same longitudinal location with respect to said main lumen;
- (d) a second set of at least three suction ports associated with a different one of said at least six discrete vacuum lumens and peripherally distributed around said main lumen in a same longitudinal location with respect to said main lumen;
- such that each of said at least six discrete vacuum lumens is associated with a single suction port;
- wherein said first and second sets of at least three suction ports are spaced apart between at least two different locations along a longitudinal axis of said tube;
- and
- (e) a valve connected to said six discrete vacuum lumens, said valve structured to interchange applied vacuum between (i) those of said six discrete vacuum lumens which are associated with said first set of at least three suction ports and (ii) those of said six discrete vacuum lumens which are associated with said second set of at least three suction ports, thereby changing location of the esophagus coupling to the tube and diminishing or preventing damage to esophageal tissue.
The system of 1, wherein said two or more longitudinal radiopaque stripes are embedded in an outer wall of said tube.
A method comprising:
- introducing a nasogastric tube into an esophagus of a patient, said nasogastric tube comprising (a) a main lumen having one or more proximal connectors for connecting to a source of substances or pressure;
- (b) at least six discrete vacuum lumens peripherally surrounding said main lumen;
- and (c) a first set of at least three suction ports for circumferentially sealingly drawing an inner wall of an esophagus thereagainst, each of said at least three suction ports associated with a different one of said at least six discrete vacuum lumens and peripherally distributed around said main lumen in a same longitudinal location with respect to said main lumen, (d) a second set of at least three suction ports associated with a different one of said at least six discrete vacuum lumens and peripherally distributed around said main lumen in a same longitudinal location with respect to said main lumen;
- such that each of said at least six discrete vacuum lumens is associated with a single suction port;
- wherein said first and second sets of at least three suction ports are spaced apart between at least two different locations along a longitudinal axis of said nasogastric tube, (e) a valve connected to said at least six discrete vacuum lumens, said valve structured to interchange applied vacuum between (i) those of said at least six discrete vacuum lumens which are associated with said first set of at least three suction ports and (ii) those of said at vacuum lumens which are associated with said second set of at least three suction ports, thereby changing location of esophagus coupling to the nasogastric tube and diminishing or preventing damage to esophageal tissue;
- and applying a vacuum interchangeably to said at least six vacuum lumens so as to sealingly draw an inner wall of an esophagus thereagainst, each time in a different location along said esophagus.
Dependencies are inferred from the claim text.