US3905361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sealing the esophagus and providing artificial respiration and evacuating the stomach
Assignee: Brunswick Biomedical Technologies Inc
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Filing: 1974-04-24
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Granted: 1975-09-16
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Expires: 1994-04-24
Abstract
Abstract Apparatus for use in artificial respiration and stomach evacuation comprising an elongated member and ventilation mask. The elongated member which is designed to be inserted into the esophagus and stomach has an expandable inflatable element which can be operated externally after insertion in order to close the esophagus to prevent inflation of the stomach or aspiration of the contents of the stomach into the respiratory system. The ventilation mask, which fits over the mouth and nose provides a seal against the patient''s face when it is held in place. A ventilation opening in the mask allows air or oxygen to be directed through the mouth into the lungs for artificial respiration. The apparatus preferably includes a tubular fluid passageway in the elongated member with evacuation openings beyond the inflatable element to allow the contents of the stomach to be aspirated through the passageway and externally of the mask. Fluid can also be introduced into the stomach through the passageway.
Inventors
- 👤 John R Hewson
- 👤 Roy H Hewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:15
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0463; A61M1/00; A61M1/84; A61M16/0402; A61M16/0415; A61M16/0434; A61M16/0475; A61M16/0477; A61M16/0484; A61M16/0488; A61M16/049; A61M16/0493; A61M16/06; A61M2210/00; A61M2210/10; A61M2210/1042; A61M2210/1053
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
Apparatus for medicinal purposes comprising an elongated solid, tubular member constructed and arranged to be inserted into the esophagus and having outer and inner ends, an expandable element carried by the member in the vicinity of its inner end, means for causing the element to expand so as to form an effective seal isolating the stomach from the lungs of a patient, a face mask including a cup-shaped section having a collar means about the periphery thereof for providing a seal with the face of a patient; said elongated tubular member extending through said cup-shaped section in the vicinity of its outer end, and an opening through said cup-shaped section defining a ventilating passageway passing to the inside of the mask for introducing ventilating gas therein which may pass through the nose and/or mouth and trachea to the patient''s lungs.
Claim 2
Dependent Claim
140 words
Apparatus for medicinal purposes comprising an elongated solid, tubular member constructed and arranged to be inserted into the esophagus and having outer and inner ends, an expandable element carried by the member in the vicinity of its inner end, means for causing the element to expand so as to form an effective seal isolating the stomach from the lungs of a patient, a face mask including a cup-shaped section having a collar means about the periphery thereof for providing a seal with the face of a patient; said elongated tubular member extending through said cup-shaped section in the vicinity of its outer end, and an opening through said cup-shaped section defining a ventilating passageway passing to the inside of the mask for introducing ventilating gas therein which may pass through the nose and/or mouth and trachea to the patient''s lungs.
Claim 3
Dependent Claim
42 words
Apparatus as defined in claim 1 in which the elongated member has a port adjacent to the outer end of the member and a port located adjacent to the inner end and contains a duct which provides fluid communication between the ports.
Claim 4
Dependent Claim
15 words
Apparatus as defined in claim 1, in which the expandable element comprises an inflatable cuff.
Claim 5
Dependent Claim
28 words
Apparatus as defined in claim 3 further characterized by a channel in the elongated member and connected to the cuff and through which the cuff may be inflated.
Claim 6
Dependent Claim
30 words
Apparatus as claimed in claim 1 in which the outer end of the elongated member is connected to a sleeve in turn removably mounted in and extending through the mask.
Claim 7
Dependent Claim
30 words
Apparatus as defined in claim 1 in which an inflatable collar is secured to the edge of the mask to form a seal between the mask and the patient''s face.
Claim 8
Dependent Claim
26 words
Apparatus as claimed in claim 1 further characterized by a ventilation tube in communication with the opening in said mask for providing mouth to mask ventilation.
Claim 9
Dependent Claim
182 words
Apparatus for medical purposes comprising, an elongated member constructed and arranged to be inserted into the esophagus and having outer and inner ends, an expandable element carried by the member in the vicinity of its inner end, means for causing the element to expand so as to form an effective seal isolating the stomach from the lungs of a patient, a face mask connected to the elongated member in the vicinity of its outer end with said face mask having means for forming a seal with the face of a patient, an opening through the mask to the inside thereof for introducing ventilating gas therein which may pass through the nose and/or mouth and trachea to the patient''s lungs, said elongated member being tubular with a port adjacent to the outer end of the member and a port located adjacent to the inner end and containing a duct which provides fluid communication between the ports, a second opening in the mask through which the tubular member extends, and said port adjacent the outer end of the tubular member lying outside said mask.
Claim 10
Dependent Claim
182 words
Apparatus for medical purposes comprising, an elongated member constructed and arranged to be inserted into the esophagus and having outer and inner ends, an expandable element carried by the member in the vicinity of its inner end, means for causing the element to expand so as to form an effective seal isolating the stomach from the lungs of a patient, a face mask connected to the elongated member in the vicinity of its outer end with said face mask having means for forming a seal with the face of a patient, an opening through the mask to the inside thereof for introducing ventilating gas therein which may pass through the nose and/or mouth and trachea to the patient''s lungs, said elongated member being tubular with a port adjacent to the outer end of the member and a port located adjacent to the inner end and containing a duct which provides fluid communication between the ports, a second opening in the mask through which the tubular member extends, and said port adjacent the outer end of the tubular member lying outside said mask.
Claim 11
Dependent Claim
36 words
Apparatus as defined in claim 8 further characterized by a ventilation tube in communication with the opening in said mask for providing mouth to mask ventilation, said tube being open to the inside of the mask.
Claim 12
Dependent Claim
19 words
Apparatus as defined in claim 2 further characterized by said duct being an integral part of the tubular member.
Claim 13
Dependent Claim
35 words
Apparatus as defined in claim 2 further characterized by said duct being a separate member that extends out the ports and has openings in its inner end for communicating with the interior of the stomach.
References Cited (Backward Citations)
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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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |