IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0777772
(2004-02-12)
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등록번호 |
US-7261105
(2007-08-28)
|
발명자
/ 주소 |
- Fukunaga,Atsuo F.
- Fukunaga,Blanca M.
- Fukunaga,Alex S.
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
46 |
초록
▼
A breathing circuit comprising first and second conduits is disclosed, wherein at least one of the conduits is a non-conventional conduit. A multilumen unilimb breathing circuit is also disclosed having first and second conduits, wherein when the proximal ends of said first and second conduits are
A breathing circuit comprising first and second conduits is disclosed, wherein at least one of the conduits is a non-conventional conduit. A multilumen unilimb breathing circuit is also disclosed having first and second conduits, wherein when the proximal ends of said first and second conduits are each connected to an inlet and outlet fitting, respectively, movement of the distal end of the first conduit causes a corresponding movement of the distal end of the second conduit. In an embodiment, inner and outer flexible conduits are formed of pleated tubing that is axially extendable and compressible to form a unilimb multilumen respiratory circuit. The pleating provides for axial extension and contraction. The multilumen respiratory circuit can provide a variable rebreathing volume. In an embodiment, at least one tube in a multilumen respiratory conduit is radially collapsible and radially expandable to a maximum radius for carrying respiratory gases to and from a patient. Also disclosed are methods and systems of optimizing utilization of fresh gases during artificial or assisted ventilation, including administering anesthesia.
대표청구항
▼
The invention claimed is: 1. A unilimb multilumen respiratory circuit comprising first and second conduits, each of said conduits having a proximal and a distal end, wherein said proximal end of said first conduit can be operatively connected to an inlet for respiratory gases and said second condui
The invention claimed is: 1. A unilimb multilumen respiratory circuit comprising first and second conduits, each of said conduits having a proximal and a distal end, wherein said proximal end of said first conduit can be operatively connected to an inlet for respiratory gases and said second conduit can be operatively connected to an outlet for respiratory gases, wherein said first conduit comprises pleated tubing and said second conduit comprises pleated tubing, said conduits being connected at their distal ends to a common distal fitting, wherein said first and second conduits meet the flow requirements and compliance required for spontaneous and assisted ventilation, and wherein said distal fitting can be detachably connected directly to a patient airway device selected from the group consisting of a mask, an endotracheal tube, a laryngeal mask, a laryngeal tube, and a nasal tube, wherein axial extension or contraction of said distal end of said second conduit causes a corresponding axial extension or contraction of said distal end of said first conduit, wherein upon axial extension of said distal end of said second conduit from a first compressed axial conformation to a second expanded axial conformation, or vice versa, said second conduit will retain said second conformation, and wherein said first conduit will expand or contract in length with corresponding axial expansion or contraction of said second conduit, wherein said proximal end of said first conduit is connected to said proximal end of said second conduit via a common proximal fitting or proximal terminal, wherein axial extension or contraction will adjust the volume therein of at least one of said first second conduits. 2. The circuit of claim 1, wherein the length of said first tube can be longer than said second tube when the length of said first tube is not constrained by mutual connection with said second tube to said fittings or said distal filling and said proximal terminal. 3. The circuit of claim 1, wherein the amplitudes or wavelengths of the pleats of said first and second tube are proportional in size. 4. The circuit of claim 1, wherein said first and second conduits have resistance to flow of less than about 6 cm H2O at flow rates of up to about 60 L/min. 5. The circuit of claim 1, wherein at least a portion of said first conduit is contained within said second conduit. 6. The circuit of claim 5, wherein said at least a portion of said first conduit contained within said second conduit is coaxial therewith. 7. A ventilation or anesthesia system, comprising the unilimb multilumen respiratory circuit of claim 6. 8. The circuit of claim 5, wherein said proximal fitting or proximal terminal comprises at least two lumens each having filters therein to provide for independent filtration of fluid passing to or from said first and second conduits via said proximal fitting or proximal terminal. 9. The circuit of claim 1, wherein said proximal fitting or proximal terminal comprises at least two lumens each having filters therein to provide for independent filtration of fluid passing to or from said first and second conduits via said proximal fitting or proximal terminal. 10. A ventilation or anesthesia system, comprising the unilimb multilumen respiratory circuit of claim 9. 11. A ventilation or anesthesia system, comprising the unilimb multilumen respiratory circuit of claim 1.
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