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US4747827A Expired / Lapsed US ⏱️ 0.0 years remaining

Nasogastric intubation process

Assignee: Individual
•
Filing: 1986-09-25
•
Granted: 1988-05-31
•
Expires: 2006-09-25
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Abstract

Abstract Nasogastric intubation process in which a stylet is employed to bend the tube to approximate the arch of the pharyngeal recess. After being so bent, the tube is inserted trans-pharyngeal recess until the tip is supra epiglottis. The stylet is withdrawn and the tube flexes adjacent the posterior esophageal wall for assured, quick passage to the stomach.

Inventors

  • 👤 Frank C. Micek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 16:26
CPC Classifications
A; A61; A61J; A61J15/00; A61J15/0003; A61J15/0007

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 210 words
Method of performing nasal-gastric intubation incidental to extending to the stomach a hollow flexible, nasal-gastric tube employed for intubation, the tube having a closed distal end and a series of perforations distally thereof to communicate negative pressure to the stomach or to pass fluids to the stomach, and the tube when flexed tending to return to its original unflexed attitude, said method comprising: inserting into the perforated portion of the tube a stylet having a shaft of malleable material, which holds its shape when bent, until the inserted end of the stylet reaches the distal end of said tube, and then bending the stylet to cause the tube to assume an arch profile which approximates the arch-like passage from the inferior concha past (trans) the pharyngeal recess and well into the posterior pharynx; inserting the arched tube containing the bent stylet trans-pharyngeal recess and trans-soft palate until the distal end of the tube is positioned adjacent the epiglottis; holding the tube in said adjacent position and withdrawing the stylet to allow the distal end of the tube to flex toward the posterior wall of the esophagus away from the trachea thereby biasing the tube for sure entry into the esophagus; and advancing the tube down the esophagus into the stomach.
Claim 2
Dependent Claim 210 words
Method of performing nasal-gastric intubation incidental to extending to the stomach a hollow flexible, nasal-gastric tube employed for intubation, the tube having a closed distal end and a series of perforations distally thereof to communicate negative pressure to the stomach or to pass fluids to the stomach, and the tube when flexed tending to return to its original unflexed attitude, said method comprising: inserting into the perforated portion of the tube a stylet having a shaft of malleable material, which holds its shape when bent, until the inserted end of the stylet reaches the distal end of said tube, and then bending the stylet to cause the tube to assume an arch profile which approximates the arch-like passage from the inferior concha past (trans) the pharyngeal recess and well into the posterior pharynx; inserting the arched tube containing the bent stylet trans-pharyngeal recess and trans-soft palate until the distal end of the tube is positioned adjacent the epiglottis; holding the tube in said adjacent position and withdrawing the stylet to allow the distal end of the tube to flex toward the posterior wall of the esophagus away from the trachea thereby biasing the tube for sure entry into the esophagus; and advancing the tube down the esophagus into the stomach.

References Cited (Backward Citations)

US1060665A Cited
US2393003A Cited
US3867945A Cited
US4596564A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-05-31 1991-11-30 1992-05-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-05-31 1995-11-30 1996-05-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-05-31 1999-11-30 2000-05-31 $7700.00 Window Closed / Lapsed

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