US4516573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for connecting a respirator or anesthesia machine to a patient
Assignee: Gambro Engstrom AB
•
Filing: 1983-02-14
•
Granted: 1985-05-14
•
Expires: 2003-02-14
Abstract
Abstract A device for connecting a respirator or an anesthesia machine to a patient comprises a hose (1) which is flexible along substantially its whole length, and one end (1a) of which is formed in a manner to enable it to be connected, in gas-tight fashion, to an endotracheal tube or the like, and the other end (1b) of which is formed in a manner to enable it to be connected, in gas-tight fashion, to the Y-piece of the respirator or anesthesia machine. Incorporated in the part of the hose (1) located nearest the aforementioned other end (1b) is a flexible heat and moisture exchanger body (2) which fills substantially the whole of the cross-sectional through-flow area of the hose (1) and which is substantially uniformly permeable to a gas flow. The heat and moisture exchanger body (2) advantageously comprises a homogenous felted material impregnated with a hygroscopic substance and an anti-bacteria agent. The hose (1) together with the heat and moisture exchanger body (2) incorporated therein form a disposable unit.
Inventors
- 👤 Andras Gedeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:45
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/04; A61; A61M; A61M16/00; A61M16/08; A61M16/0816; A61M16/10; A61M16/1045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
A device for connecting a Y-piece connected to the inspiration and expiration tubes of a respirator or an anesthesia machine to an endotracheal tube or the like adapted to be attached to a patient, comprising a hose which is continuous and flexible along substantially its whole length and which at one end thereof includes means formed in a manner to enable it to be connected, in gas-tight fashion, to said endotracheal tube or the like, and which at the other end thereof includes means formed in a manner to enable it to be connected, in gas-tight fashion, to said Y-piece coupled to the inspiration and expiration tubes of the respirator or anesthesia machine, and inside said flexible hose there is permanently incorporated, in the region thereof adjacent said other end, a heat and moisture exchanger consisting of a flexible, substantially uniformly gas permeable body of a felted fibrous material impregnated with a hygroscopic substance, said body filling substantially the whole of the cross-sectional flow area of the hose.
Claim 2
Independent Claim
168 words
A device for connecting a Y-piece connected to the inspiration and expiration tubes of a respirator or an anesthesia machine to an endotracheal tube or the like adapted to be attached to a patient, comprising a hose which is continuous and flexible along substantially its whole length and which at one end thereof includes means formed in a manner to enable it to be connected, in gas-tight fashion, to said endotracheal tube or the like, and which at the other end thereof includes means formed in a manner to enable it to be connected, in gas-tight fashion, to said Y-piece coupled to the inspiration and expiration tubes of the respirator or anesthesia machine, and inside said flexible hose there is permanently incorporated, in the region thereof adjacent said other end, a heat and moisture exchanger consisting of a flexible, substantially uniformly gas permeable body of a felted fibrous material impregnated with a hygroscopic substance, said body filling substantially the whole of the cross-sectional flow area of the hose.
Claim 3
Dependent Claim
18 words
A device as claimed in claim 1, wherein said felted material is further impregnated with an antibacteria substance.
Claim 4
Dependent Claim
14 words
A device as claimed in claim 1, wherein said felted material comprises polypropylene fibres.
Claim 5
Dependent Claim
39 words
A device as claimed in claim 1, wherein the part of said hose incorporating said heat and moisture exchanger body has a larger diameter than the remainder of the hose, the transition between the two diameter values being gradual.
Claim 6
Dependent Claim
26 words
A device as claimed in claim 1, wherein said hose and said heat and moisture exchanger body incorporated therein have the form of a disposable unit.
Claim 7
Dependent Claim
16 words
A device as claimed in claim 1, wherein said hose is made of a plastics material.
Claim 8
Dependent Claim
20 words
A device as claimed in claim 1, wherein the wall of said hose has the form of a bellows structure.
References Cited (Backward Citations)
US443191A
Cited
GB1051054A
Cited
US838434A
Cited
US1596060A
Cited
GB188504A
Cited
GB416409A
Cited
GB649230A
Cited
US2702089A
Cited
US3116969A
Cited
US3330284A
Cited
DE1259207B
Cited
DE2223474A1
Cited
GB1458515A
Cited
FR2230542A1
Cited
GB1485458A
Cited
US3943940A
Cited
US4090513A
Cited
GB1539217A
Cited
US4000341A
Cited
US4200094A
Cited
EP0011847A1
Cited
US4320756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |