US5447152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endotracheal tube and the method of manufacturing it
Assignee: Terumo Corp
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Filing: 1992-08-14
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Granted: 1995-09-05
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Expires: 2012-08-14
Abstract
Abstract An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with the lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface of the tubular body and communicate with the inflation lumen, characterized by said cuff being made of a flexible fluoroplastic, a mixture of a flexible fluoroplastic and a thermoplastic resin or a partly cross-linked resin with a low laughing gas permeability.
Inventors
- 👤 Tadashi Kohsai
- 👤 Nobuaki Mihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:44
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/0005; A; A61; A61M; A61M16/00; A61M16/04; A61M16/0486; A61M25/00; A61M25/10; A61M25/1027; A61M16/0434; A61M25/1029; B29K; B29K2027/00; B29K2027/12; B29K2105/00; B29K2105/24; B29K2995/00; B29K2995/0037; B29K2995/0065; B29K2995/0067
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with said lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface of the tubular body and communicate with said inflation lumen, and wherein said cuff is made of a flexible fluoroplastic in which the Shore A hardness is 90 or less and the gas permeability is 2 cc(STP)·cm/cm 2 ·sec-cmHg×10 -10 or less or a mixture of a flexible fluoroplastic and a thermoplastic resin in which the Shore A hardness is 90 or less and the gas permeability is 2 cc(STP)·cm/cm 2 ·sec-cmHg×10-10 or less.
Claim 2
Dependent Claim
117 words
An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with said lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface of the tubular body and communicate with said inflation lumen, and wherein said cuff is made of a flexible fluoroplastic in which the Shore A hardness is 90 or less and the gas permeability is 2 cc(STP)·cm/cm 2 ·sec-cmHg×10 -10 or less or a mixture of a flexible fluoroplastic and a thermoplastic resin in which the Shore A hardness is 90 or less and the gas permeability is 2 cc(STP)·cm/cm 2 ·sec-cmHg×10-10 or less.
Claim 3
Dependent Claim
35 words
An endotracheal tube in claim 1, in which said thermoplastic resin is at least one resin selected from the group consisting of polyurethane, polyamide, polyester, polypropylene, polyethylene, polyolefin elastomer, ethylene-vinyl acetate copolymer, polystyrene and polybutadiene.
Claim 4
Dependent Claim
38 words
An endotracheal tube in claim 1, wherein said flexible fluoroplastic is a graft copolymer of a fluororubber and a crystalline fluororesin wherein the fluororesin is grafted to the fluororubber or a block copolymer of fluororubber and crystalline fluororesin.
Claim 5
Dependent Claim
122 words
An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with said lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface of the tubular body and communicate with said inflation lumen, characterized by said cuff being made of a partly cross-linked resin, having a gel fraction of 10 to 50%, with a low laughing gas permeability, and said resin is a flexible fluoroplastic and a thermoplastic resin and wherein said flexible fluoroplastic is a graft copolymer of a fluororubber and a crystalline fluororesin wherein the fluororesin is grafted to the fluororubber or a block copolymer of fluororubber and crystalline fluororesin.
Claim 6
Dependent Claim
122 words
An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with said lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface of the tubular body and communicate with said inflation lumen, characterized by said cuff being made of a partly cross-linked resin, having a gel fraction of 10 to 50%, with a low laughing gas permeability, and said resin is a flexible fluoroplastic and a thermoplastic resin and wherein said flexible fluoroplastic is a graft copolymer of a fluororubber and a crystalline fluororesin wherein the fluororesin is grafted to the fluororubber or a block copolymer of fluororubber and crystalline fluororesin.
Claim 7
Dependent Claim
20 words
An endotracheal tube in claim 4, in which the gel fraction of said partly cross-linked resin is 10 to 50%.
Claim 8
Dependent Claim
21 words
An endotracheal tube in claim 4, in which the Shore A hardness of said partly cross-linked resin is 90 or smaller.
Claim 9
Dependent Claim
123 words
An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with said lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface or the tubular body and communicate with said inflation lumen, characterized by said cuff being made of a mixture of a flexible fluoroplastic and a thermoplastic resin, and the Shore A hardness of said mixture of a flexible fluoroplastic and a thermoplastic resin is 90 or smaller and wherein said flexible fluoroplastic is a graft copolymer of a fluororubber and a crystalline fluororesin wherein the fluororesin is grafted to the fluororubber or a block copolymer of fluororubber and crystalline fluororesin.
Claim 10
Dependent Claim
123 words
An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with said lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface or the tubular body and communicate with said inflation lumen, characterized by said cuff being made of a mixture of a flexible fluoroplastic and a thermoplastic resin, and the Shore A hardness of said mixture of a flexible fluoroplastic and a thermoplastic resin is 90 or smaller and wherein said flexible fluoroplastic is a graft copolymer of a fluororubber and a crystalline fluororesin wherein the fluororesin is grafted to the fluororubber or a block copolymer of fluororubber and crystalline fluororesin.
References Cited (Backward Citations)
FR1449782A
Cited
US3854484A
Cited
US4055682A
Cited
US3865666A
Cited
US4453940A
Cited
US4130617A
Cited
US4251305A
Cited
US4331142A
Cited
US4511354A
Cited
US4411055A
Cited
US4387711A
Cited
US4611018A
Cited
JPS61154678A
Cited
JPS6377050A
Cited
JPS63206254A
Cited
US4841007A
Cited
JPH04102461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-04 | 1999-03-06 | 1999-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-04 | 2003-03-06 | 2003-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-04 | 2007-03-06 | 2007-09-05 | $7700.00 | Window Closed / Lapsed |