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US4596579A Expired / Lapsed US ⏱️ 0.0 years remaining

Voice prosthesis with tracheal guard

Assignee: Individual
•
Filing: 1984-04-06
•
Granted: 1986-06-24
•
Expires: 2004-04-06
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Abstract

Abstract A voice prosthesis formed as a small diametered, flexible walled, generally linear tube having an air valve at its inner end, a flexible retention collar intermediate its ends and a mounting tab at its outer end is adapted for insertion into a surgically placed tracheoespohageal fistula following laryngectomy for restoring the power of speech to the user. A larger diametered, relatively short, curved tracheal tube or cannula provided with a retention collar at its outer end is insertable into the tracheal stoma to prevent closure thereof; the cannula partially surrounding and guarding the mounted prosthesis which transects the tracheal cannula, by passing through an elongated channel opening, which is open at one end and extends along the outer wall of the tracheal tube. The arrangement of the two tubes is such that the larger tracheal cannula is readily inserted and withdrawn from the tracheal stoma without disturbing the mounted voice prosthesis.

Inventors

  • 👤 Robert L. Pruitt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 10:38
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/20; A61F2/203

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 60 words
In combination, a tubular tracheoesophageal human voice prosthesis, and a tracheal cannula having an open ended tubular body formed with a channel opening in one wall thereof receptive of said prothesis for passage therethrough of said voice prosthesis whereby the tracheal cannula may be inserted and withdrawn from a tracheal stoma without disturbing the tracheoesophageal mounted position of the prosthesis.
Claim 2
Dependent Claim 60 words
In combination, a tubular tracheoesophageal human voice prosthesis, and a tracheal cannula having an open ended tubular body formed with a channel opening in one wall thereof receptive of said prothesis for passage therethrough of said voice prosthesis whereby the tracheal cannula may be inserted and withdrawn from a tracheal stoma without disturbing the tracheoesophageal mounted position of the prosthesis.
Claim 3
Dependent Claim 39 words
The combination of claim 1 wherein said opening is elongated, open at one end and dimensioned to clear said prosthesis throughout its length whereby said cannula passes over the mounted prosthesis when inserted or removed from the tracheal stoma.
Claim 4
Dependent Claim 53 words
The combination of claim 2 in which the prosthesis is provided with a mounting tab at its outer end attachable to the user's neck to extend partially over said stoma, and said channel opening extends substantially along the length of said body and is receptive of said tab via said open end thereof.
Claim 5
Dependent Claim 46 words
The combination of claim 1, wherein said prosthesis is a flexible walled, generally linear tubular member, and said tracheal cannula, when mounted in said stoma, transects the linear axis of said prosthesis and is sufficiently rigid to guard the same and prevent closure of said stoma.
Claim 6
Dependent Claim 30 words
The combination of claim 1, and an enlarged retention collar surrounding an outer open end of said trachael cannula to operatively limit insertion of said cannula into the tracheal passageway.

References Cited (Backward Citations)

US3088466A Cited
US3225767A Cited
US3688774A Cited
US4269184A Cited
US4315505A Cited
US4325366A Cited
US4304228A Cited
US4435853A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-06-23 1989-12-23 1990-06-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-06-23 1993-12-23 1994-06-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-06-23 1997-12-23 1998-06-24 $7700.00 Window Closed / Lapsed

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