US4593687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endotracheal catheter
Assignee: Individual
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Filing: 1983-10-31
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Granted: 1986-06-10
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Expires: 2003-10-31
Abstract
Abstract A method and apparatus for introducing oxygen or a saline solution directly into the trachea in order to facilitate respiration. The apparatus includes a sharp pointed magnetic stylet, a similarly shaped rounded end magnetic probe, and a radiopaque flexible bulbed end plastic catheter tube with three equally spaced axially embedded memory wires. The small diameter catheter tube and the incorporated magnetic stylet is inserted through the wall of the throat and thorugh the flesh and wall of the trachea between the second and third tracheal rings. The retraction and removal of the magnetic stylet causes the expansion of the catheter and locks the tube end inside the tracheal wall. The catheter tube is the vessel for the conveyance of oxygen or a saline solution into the trachea. Insertion of the magnetic probe into the catheter tube causes the contraction of the catheter tube end and allows same to be removed and reinserted as necessary.
Inventors
- 👤 Leo C. Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M25/0067; A61M25/0074; A61M16/00; A61M16/04; A61M16/0465
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
199 words
An endotracheal catheter comprising a relatively small diameter flexible tubing member for placement through the tracheal wall of a human; one end of said tubing member adapted to form an elliptically shaped bulbous expandable anchoring lock with the trachea after insertion therein, and the other end of said tubing member having means adapted for connection to a conduit; the one end of said tubing member adapted to form said expandable anchoring lock comprising a plurality of equi-spaced magnetic wires embedded longitudinally within the wall area of said one end of said tubing member and a corresponding number of longitudinal cuts extending through the wall of said tubing member and positioned midway between each of said magnetic wires; said magnetic wires being bowed outwardly and adapted to flex to straight and parallel positions with respect to each other under the influence of a magnetic field created within the interior of said tubing member and to bow outwardly upon removal of said magnetic field whereby said elliptically shaped bulbous anchoring lock is formed within the trachea by the spreading of said flexible tubing member about said wires and wherein said cuts form elliptically shaped apertures through which a fluid can flow.
Claim 2
Dependent Claim
199 words
An endotracheal catheter comprising a relatively small diameter flexible tubing member for placement through the tracheal wall of a human; one end of said tubing member adapted to form an elliptically shaped bulbous expandable anchoring lock with the trachea after insertion therein, and the other end of said tubing member having means adapted for connection to a conduit; the one end of said tubing member adapted to form said expandable anchoring lock comprising a plurality of equi-spaced magnetic wires embedded longitudinally within the wall area of said one end of said tubing member and a corresponding number of longitudinal cuts extending through the wall of said tubing member and positioned midway between each of said magnetic wires; said magnetic wires being bowed outwardly and adapted to flex to straight and parallel positions with respect to each other under the influence of a magnetic field created within the interior of said tubing member and to bow outwardly upon removal of said magnetic field whereby said elliptically shaped bulbous anchoring lock is formed within the trachea by the spreading of said flexible tubing member about said wires and wherein said cuts form elliptically shaped apertures through which a fluid can flow.
Claim 3
Dependent Claim
16 words
The endotrachael catheter of claim 1 wherein said tubing member is constructed of a radiopaque material.
Claim 4
Dependent Claim
20 words
The endotracheal catheter of claim 1 wherein said means adapted for connection to a conduit comprises a Leur Lock adapter.
Claim 5
Dependent Claim
34 words
The endotracheal catheter of claim 1 wherein the one end of said tubing member adjacent said anchoring lock terminates in an aperture having a diameter smaller than the inside diameter of said tubing member.
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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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |