US4387711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical device with inflatable cuff
Assignee: Mallinckrodt Inc
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Filing: 1981-01-27
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Granted: 1983-06-14
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Expires: 2001-01-27
Abstract
Abstract A medical device, such as a tracheal tube, having a cuff for blocking a bodily passage, such as the passage through the trachea, is provided. The cuff is made of a material having a low diffusion rate for nitrous oxide and oxygen relative to the diffusion rate for nitrogen so that, for example, when nitrous oxide is provided as an anesthetic during a surgical procedure in which the tracheal tube is utilized, excessive pressure build-up does not occur within the cuff and post-operative trauma in the tracheal area is avoided. Polyvinylidine chloride-polyvinyl chloride copolymer is disclosed as a suitable material.
Inventors
- 👤 Jack D. Merry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0475; A61M16/0477; A61M16/0481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A medical device comprising: (a) an elongated tube; (b) an inflatable cuff surrounding said tube, said cuff being inflatable by air supplied thereto to engage the wall of a body cavity; said cuff being formed of polyvinylidene chloride-polyvinyl chloride copolymer.
Claim 2
Dependent Claim
40 words
A medical device comprising: (a) an elongated tube; (b) an inflatable cuff surrounding said tube, said cuff being inflatable by air supplied thereto to engage the wall of a body cavity; said cuff being formed of polyvinylidene chloride-polyvinyl chloride copolymer.
References Cited (Backward Citations)
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US3659612A
Cited
US3734100A
Cited
US4151149A
Cited
US4239799A
Cited
US4320175A
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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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |