Patent US4863438B1 successfully refreshed from Google Patents.
← Back to Patent Explorer
US4863438B1 Expired / Lapsed US ⏱️ 0.0 years remaining

US4863438B1 - - Google Patents

Assignee: Applied Medical Research Inc
•
Filing: 1985-11-29
•
Granted: 1992-01-28
•
Expires: 2005-11-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Device includes a flexible, hollow tube portion having a resiliently deformable mushroom shape tip at the inner end thereof to retain the tube in the stomach or other viscera of a patient and provide an enlarged internal chamber for the mounting of a one-way flapper valve therein and the seating of the flapper valve against the inner end of the tube portion to prevent reflux of gastric contents while permitting the influx of fluids into the stomach or other viscera of the patient through the tube portion. A pair of oppositely extending, relatively short, flat wings are integrally molded on the outer end of the tube portion to make the tube portion self-retaining and flush up against the skin. The wings are relatively narrow in width, whereby the tube portion may be rotated a part turn to bring the wings into contact with different areas of the skin if irritation should occur. A plug is integrally molded on the outer end of one of the wings by a flexible membrane which permits the plug to be inserted into the tube at the outer end thereof and removed therefrom as desired.

Inventors

  • 👤 L Gauderer Michael
  • 👤 J Picha George
  • 👤 Siedlak Dennis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 23:43
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61J; A61J15/00; A61J15/0026; A61J15/003; A61J15/0034; A61J15/0038; A61J15/0053; A61J15/0065; A61J15/0015; A61J15/0092; A61M25/00; A61M25/01; A61M25/02; A61M2025/0213; A61M2025/0233; A61M2039/0255; A61M2039/027; A61M2039/0276; A61M2039/0279; A61M2039/0291; A61M2039/0297; A61M2210/00; A61M2210/10; A61M2210/1042; A61M2210/1053

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-01-27 1995-07-29 1996-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-01-27 1999-07-29 2000-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-01-27 2003-07-29 2004-01-28 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag