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US5057091A Expired / Lapsed US ⏱️ 0.0 years remaining

Enteral feeding tube with a flexible bolus and feeding bolus

Assignee: Corpak Medsystems Inc
•
Filing: 1989-07-31
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Granted: 1991-10-15
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Expires: 2009-07-31
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Abstract

Abstract An enteral feeding tube adapted for transpyloric passage and duodenal intubation of a distal end of the feeding tube in a patient capable of peristaltic contractions of the stomach wall. A flexible bolus is located at the distal end of the feeding tube, which has a feeding bolus and connected thereto by a linking means. The flexible bolus is of such length, diameter and deformability to initiate peristaltic movement of the stomach wall. The linking means is of outer dimensions smaller than the outer dimensions of the flexible bolus and the feeding tube, and is of a length, diameter and deformability selected to initiate and maintain peristaltic contractions in the stomach walls around and behind the flexible bolus. The continued peristaltic contractions act upon the flexible bolus and linking means, thereby drawing the feeding bolus and distal end of the feeding tube through the pylorus to achieve duodenal intubation.

Inventors

  • 👤 Erik Andersen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 18:54
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0003; A61J15/0007; A61J15/0026; A61J15/008; A61J15/0088; A61J15/0069

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 184 words
An enteral feeding tube adapted for transpyloric passage and duodenal intubation of a distal end of said feeding tube in a patient capable of peristaltic contractions of the stomach wall, comprising: a. a feeding tube having a distal end; b. a feeding bolus located at the distal end of said feed tube, said feeding bolus having at least one opening in fluid communication with said feeding tube for dispensing nutritional fluids, and being of greater rigidity than said feeding tube; c. an elongated, generally flexible bolus, said flexible bolus extending from said feeding bolus; and, d. means for linking said flexible bolus to the feeding bolus of said feeding tube, said linking means having outer dimensions smaller than the outer dimensions of said flexible bolus and said feeding bolus, said linking means being of a length, diameter and deformability selected to initiate and maintain peristaltic contractions in the stomach walls around and behind said flexible bolus, the peristaltic contractions acting upon and advancing said flexible bolus, linking means, feeding bolus, and distal end of said feeding tube through the pylorus to achieve duodenal intubation.
Claim 2
Dependent Claim 184 words
An enteral feeding tube adapted for transpyloric passage and duodenal intubation of a distal end of said feeding tube in a patient capable of peristaltic contractions of the stomach wall, comprising: a. a feeding tube having a distal end; b. a feeding bolus located at the distal end of said feed tube, said feeding bolus having at least one opening in fluid communication with said feeding tube for dispensing nutritional fluids, and being of greater rigidity than said feeding tube; c. an elongated, generally flexible bolus, said flexible bolus extending from said feeding bolus; and, d. means for linking said flexible bolus to the feeding bolus of said feeding tube, said linking means having outer dimensions smaller than the outer dimensions of said flexible bolus and said feeding bolus, said linking means being of a length, diameter and deformability selected to initiate and maintain peristaltic contractions in the stomach walls around and behind said flexible bolus, the peristaltic contractions acting upon and advancing said flexible bolus, linking means, feeding bolus, and distal end of said feeding tube through the pylorus to achieve duodenal intubation.
Claim 3
Dependent Claim 19 words
The enteral feeding tube of claim 1 wherein said linking means comprises an 8 Fr. or smaller diameter tube.
Claim 4
Dependent Claim 17 words
The enteral feeding tube of claim 1 wherein said flexible bolus is weighted with a non-toxic mass.
Claim 5
Dependent Claim 17 words
The enteral feeding tube of claim 2 wherein said flexible bolus is weighted with a non-toxic mass.
Claim 6
Dependent Claim 25 words
The enteral feeding tube of claims 1, 2, 3 or 4 wherein the inside surface of said flexible bolus is coated with a radiopaque material.
Claim 7
Dependent Claim 14 words
The enteral feeding tube of claim 5 wherein said radiopaque material is bismuth trioxide.
Claim 8
Dependent Claim 14 words
The enteral feeding tube of claim 5 wherein said radiopaque material is barium sulfate.

References Cited (Backward Citations)

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US3395710A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-10-14 1995-04-15 1995-10-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-10-14 1999-04-15 1999-10-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-10-14 2003-04-15 2003-10-15 $7700.00 Window Closed / Lapsed

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