US3683908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sealing the oesophagus and providing artificial respiration
Assignee: TANTRIMUDALIGE ANTHONY DON MIC
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Filing: 1969-10-20
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Granted: 1972-08-15
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Expires: 1989-10-20
Abstract
Abstract Apparatus for use in artificial respiration comprising an elongated member designed to be inserted into the oesophagus and having an expandable inflatable element which can be operated externally after insertion in order to close the oesophagus to prevent inflation or aspiration of the stomach. The apparatus preferably includes a tubular airway in combination with the elongated member, with discharge openings to allow air to be introduced into the patient''s respiratory passages and lungs. The expandible element may be mechanically operated.
Inventors
- 👤 Tantrimudalige Anthony Michael
- 👤 Edward Henry Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/0409; A61M16/0415; A61M16/0475; A61M16/0488; A61M16/049; A61M16/0493
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
Apparatus for medical purposes comprising an elongated tubular member constructed and arranged to be inserted into the oesophagus and having an outer end and an inner end, an expandable element carried by the member at a point displaced from its outer end, means for causing the element to expand so as to form an effective seal with the walls of the oesophagus, an inlet adjacent the outer end of the member and a discharge port in the member located between said outer end and said expandable element, and a duct within the elongated tubular member providing fluid communication between the inlet and discharge port, ''''said duct terminating at a point between the discharge port and said inner end so that the fluids directed down the duct to the discharge port will not discharge out of the inner end and no fluid may flow into the inner end to the discharge port''''.
Claim 2
Dependent Claim
151 words
Apparatus for medical purposes comprising an elongated tubular member constructed and arranged to be inserted into the oesophagus and having an outer end and an inner end, an expandable element carried by the member at a point displaced from its outer end, means for causing the element to expand so as to form an effective seal with the walls of the oesophagus, an inlet adjacent the outer end of the member and a discharge port in the member located between said outer end and said expandable element, and a duct within the elongated tubular member providing fluid communication between the inlet and discharge port, ''''said duct terminating at a point between the discharge port and said inner end so that the fluids directed down the duct to the discharge port will not discharge out of the inner end and no fluid may flow into the inner end to the discharge port''''.
Claim 3
Dependent Claim
15 words
Apparatus as claimed in claim 1, in which the expandable element comprises an inflatable member.
Claim 4
Dependent Claim
42 words
Apparatus as claimed in claim 2 further characterized by an auxiliary conduit extending along the member and connected to the expandable element and through which the expandable element is operated in response to the supply of fluid fed through said auxiliary conduit.
Claim 5
Dependent Claim
22 words
Apparatus as claimed in claim 3 further characterized by an external inflator unit connected to the outer end of the auxiliary conduit.
Claim 6
Dependent Claim
17 words
Apparatus as claimed in claim 4, in which the inflator unit includes an expandible pressure indicator member.
Claim 7
Dependent Claim
21 words
Apparatus as claimed in claim 1, in which the member is curved, to facilitate insertion through the mouth into the oesophagus.
Claim 8
Dependent Claim
19 words
Apparatus as claimed in claim 1, in which the outer end of the member is connected to a mouthpiece.
Claim 9
Dependent Claim
20 words
Apparatus as claimed in claim 1, including a mouth shield and bite tube, at the outer end of the member.
Claim 10
Dependent Claim
37 words
Apparatus as claimed in claim 1 further characterized by said duct being an integral part of the member and said discharge port comprising a plurality of openings designed to communicate with the respiratory passages of the patient.
Claim 11
Dependent Claim
42 words
Apparatus as claimed in claim 9 further characterized by an auxiliary conduit extending along the member and connected to the expandable element and through which the expandable element is operated in response to the supply of fluid fed through said auxiliary conduit.
Claim 12
Dependent Claim
20 words
Apparatus as claimed in claim 10, including a mouth shield and bite tube, at the outer end of the member.
Claim 13
Dependent Claim
22 words
Apparatus as claimed in claim 10 further characterized by an external inflator unit connected to the outer end of the auxiliary conduit.
Claim 14
Dependent Claim
20 words
Apparatus as claimed in claim 12, including a mouth shield and bite tube, at the outer end of the member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |