US4454887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical instruments for introduction into the respiratory tract of a patient
Assignee: Individual
•
Filing: 1982-04-12
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Granted: 1984-06-19
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Expires: 2002-04-12
Abstract
Abstract The invention relates to a medical instrument for withdrawal of tracheobronchial secretions or for introduction of curative agents, tubes, guiding elements, probes, endoscopes, catheters and the like into the respiratory tract of a patient. A tube which is flexible and morphologically stable in cross-section, is inserted via the patient's mouth and pharynx cavities, and may be inserted with a distal extension as far as into the esophagus. Above the extension, the tube has an opening which is lined up laterally with the larynx cavity of the patient when the instrument is being inserted and through which the secretion is extracted. Also, the curative agents, guiding elements, tubes, probes, endoscopes, catheters and the like are inserted through this opening into the respiratory tract.
Inventors
- 👤 Christian Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:55
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/04; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00098; A61B1/00147; A61B1/00154; A61B1/267; A61B1/2676; A61M; A61M16/00; A61M16/04; A61M16/0488; A61M25/00; A61M25/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A medical instrument for insertion into the respiratory tract of a patient, comprising: a flexible tube which is morphologically stable in cross-section, and having a distal extension formed of a flat strip, said flexible tube being insertable by means of said extension through the mouth and pharynx cavities of the patient up to and into the oesophagus thereof, said flexible tube having an opening closable by means of a tongue located on said flexible tube, said opening of said flexible tube being located above said extension and, on insertion of the instrument, said opening is laterally alignable with the larynx of the patient, whereby secretions may be extracted from, and curative agents, internal tubes, guiding elements, probes, endoscopes and catheters are insertable into the respiratory tract of the patient via said flexible tube opening,
Claim 2
Dependent Claim
134 words
A medical instrument for insertion into the respiratory tract of a patient, comprising: a flexible tube which is morphologically stable in cross-section, and having a distal extension formed of a flat strip, said flexible tube being insertable by means of said extension through the mouth and pharynx cavities of the patient up to and into the oesophagus thereof, said flexible tube having an opening closable by means of a tongue located on said flexible tube, said opening of said flexible tube being located above said extension and, on insertion of the instrument, said opening is laterally alignable with the larynx of the patient, whereby secretions may be extracted from, and curative agents, internal tubes, guiding elements, probes, endoscopes and catheters are insertable into the respiratory tract of the patient via said flexible tube opening,
Claim 3
Dependent Claim
156 words
said flexible tube further including a sloping baffle or partition, extending in the area of said flexible tube opening from the rearward wall area of said flexible tube slopingly downwards towards the front thereof, and establishing an even transition to the lower distal terminal portion of said flexible tube opening, so that a catheter, an internal tube, a guiding element, and a endoscope, which are insertable as the proximal extremity into said flexible tube, can be inserted into the patient's respiratory tract along said baffle or partition, and two air or venting tubes, which are open at the proximal side thereof, joined to said flexible tube and extending parallel thereto, each of said two air or venting tubes having a distal opening adjacent to said opening of said flexible tube, said extension having a width that is substantially equal to the width of the structure comprising the flexible tube and the two air or venting tubes.
Claim 4
Dependent Claim
156 words
said flexible tube further including a sloping baffle or partition, extending in the area of said flexible tube opening from the rearward wall area of said flexible tube slopingly downwards towards the front thereof, and establishing an even transition to the lower distal terminal portion of said flexible tube opening, so that a catheter, an internal tube, a guiding element, and a endoscope, which are insertable as the proximal extremity into said flexible tube, can be inserted into the patient's respiratory tract along said baffle or partition, and two air or venting tubes, which are open at the proximal side thereof, joined to said flexible tube and extending parallel thereto, each of said two air or venting tubes having a distal opening adjacent to said opening of said flexible tube, said extension having a width that is substantially equal to the width of the structure comprising the flexible tube and the two air or venting tubes.
Claim 5
Dependent Claim
27 words
An instrument according to claim 1, wherein said extension is made from soft and pliable material selected from the group of soft rubber and soft plastics material.
Claim 6
Dependent Claim
25 words
An instrument according to claim 1, wherein said air or venting tubes merge into said extension beyond their distal openings and form its longitudinal sides.
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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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |