Sleeve tube and method of use

Abstract

Methods, systems, and devices are described for fabricating, providing, and using an orogastric tube. The orogastric tube may have, among other things: a proximal end section; a distal end section opposite the proximal end section and having a flexible, resilient curved portion; at least one sump channel extending from the proximal end section along a pre-determined length of the orogastric tube into the distal end section; at least one suction channel extending from the proximal end section along a pre-determined length of the orogastric tube into the distal end section; and optionally at least one balloon channel extending from the proximal end section along a pre-determined length of the orogastric tube to the distal end section. The optional balloon channel is in communication with an expandable balloon in the distal end section; and a main channel encloses a pre-determined length of the sump channel, the suction channel, and, if present, the balloon channel.

1 . An orogastric tube comprising: a proximal end section; a distal working end section opposite the proximal end section, the distal working end section having a preformed, predetermined, flexible, and resilient curved working portion having a predetermined overall ventral curvature angle of 70-145 degrees; a main body section intermediate the proximal end section and distal working end section; a sump channel extending from the proximal end section, through the main body section, and into the curved working end section; a suction channel extending from the proximal end section, through the main body section, and into the curved working end section; the distal working end section having a tubular outer wall surrounding (i) the sump channel section within the distal working end section and (ii) the suction channel section within the distal working end; the curved working portion of the distal working end section having (i) a preformed, predetermined curved first row of suction apertures penetrating the outer wall of the distal working end section and in material transfer communication with the suction channel, and (ii) a preformed, predetermined curved second row of suction apertures penetrating the outer wall of the distal working end section and in material transfer communication with the sump channel. 
     
     
         2 . The orogastric tube of  claim 1  wherein the curved working portion of the distal working end section is intermediate a preformed, predetermined resilient curved tip and the main body section. 
     
     
         3 . The orogastric tube of  claim 1  wherein the tubular outer wall of the distal working end section includes a curved working surgical calibration guide. 
     
     
         4 . The orogastric tube of  claim 2  wherein the tubular outer wall of the distal working end section includes a curved working surgical calibration guide. 
     
     
         5 . The orogastric tube of  claim 3  wherein each first row suction aperture in the curved first row of suction apertures is coaxial with a second row suction aperture in the curved second row of suction apertures. 
     
     
         6 . The orogastric tube of  claim 4  wherein each first row suction aperture in the curved first row of suction apertures is coaxial with a second row suction aperture in the curved second row of suction apertures. 
     
     
         7 . The orogastric tube of  claim 1  wherein the predetermined overall ventral curvature angle of the curved working portion is between 74 and 140 degrees. 
     
     
         8 . The orogastric tube of  claim 6  wherein the predetermined overall ventral curvature angle of the curved working portion is between 74 and 140 degrees. 
     
     
         9 . The orogastric tube of  claim 1  wherein the distal working end section has a thin-thicker-thin cross-section extending along a lateral length of the distal working end section. 
     
     
         10 . The orogastric tube of  claim 2  wherein the distal working end section has a thin-thicker-thin cross-section extending along a lateral length of the distal working end section. 
     
     
         11 . The orogastric tube of  claim 7  wherein the distal working end section has a thin-thicker-thin cross-section extending along a lateral length of the distal working end section. 
     
     
         12 . The orogastric tube of  claim 8  wherein the distal working end section has a thin-thicker-thin cross-section extending along its lateral length. 
     
     
         13 . The orogastric tube of  claim 2  wherein the curved working portion has a first section with a first radius of curvature and a second section with a second radius of curvature different from the first radius of curvature. 
     
     
         14 . The orogastric tube of  claim 8  wherein the curved working portion has a first section with a first radius of curvature and a second section with a second radius of curvature different from the first radius of curvature. 
     
     
         15 . The orogastric tube of  claim 1  wherein the main body section has an outer main body periphery with length calibration markings extending along the outer main body periphery. 
     
     
         16 . The orogastric tube of  claim 14  wherein the main body section has an outer main body periphery with length calibration markings extending along the outer main body periphery. 
     
     
         17 . The orogastric tube of  claim 7  wherein the tubular outer wall of the distal working end section includes a curved working surgical calibration guide. 
     
     
         18 . The orogastric tube of  claim 1  where the orogastric tube is a gastrectomy tube. 
     
     
         19 . The orogastric tube of  claim 2  where the orogastric tube is a gastrectomy tube. 
     
     
         20 . The orogastric tube of  claim 1  where the orogastric tube is a gastrectomy tube. 
     
     
         21 . The orogastric tube of  claim 7  where the orogastric tube is a gastrectomy tube. 
     
     
         22 . The orogastric tube of  claim 10  where the orogastric tube is a gastrectomy tube. 
     
     
         23 . The orogastric tube of  claim 16  where the orogastric tube is a gastrectomy tube. 
     
     
         24 . The orogastric tube of  claim 23  wherein the free-state biasing means biases the distal end section to have at least one radius of curvature exceeding 50 millimeters. 
     
     
         25 . The orogastric tube of  claim 22  wherein the free-state biasing means biases the distal end section to have at least a first curved portion and a second curved portion, the first curved portion having a predetermined first radius of curvature and the second curved portion having a predetermined second radius of curvature differing from the first radius of curvature.