WO2002070041A1 - Dialysis machine blood circulating circuit fitting - Google Patents
Dialysis machine blood circulating circuit fitting Download PDFInfo
- Publication number
- WO2002070041A1 WO2002070041A1 PCT/IT2002/000131 IT0200131W WO02070041A1 WO 2002070041 A1 WO2002070041 A1 WO 2002070041A1 IT 0200131 W IT0200131 W IT 0200131W WO 02070041 A1 WO02070041 A1 WO 02070041A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fitting
- blood
- tube
- measuring device
- interface
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
- A61M1/3641—Pressure isolators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3669—Electrical impedance measurement of body fluids; transducers specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/367—Circuit parts not covered by the preceding subgroups of group A61M1/3621
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/20—Blood composition characteristics
- A61M2230/207—Blood composition characteristics hematocrit
Definitions
- the present invention relates to a dialysis machine circuit fitting.
- Known dialysis machines normally comprise a blood circulating circuit connected, in use, to the patient's circulatory system; a treatment fluid circulating circuit; and a filter, through which the blood circulating circuit feeds the blood, and the treatment fluid circulating circuit feeds the treatment fluid.
- the filter comprises a se ipermeable membrane for separating, in use, the treatment fluid from the blood, so that ions are exchanged between the treatment fluid and the blood, and part of the plasma in the blood is transferred through the membrane.
- the blood circulating circuit comprises an arterial branch upstream from the filter, ; and a venous branch downstream from the filter, and the machine comprises a peristaltic pump located along the arterial branch to feed the patient's blood to the filter .
- the blood circulating circuit and second the treatment fluid circulating circuit are made of transparent, flexible material, such as PVC, which ensures sterility of the circuits.
- the flexibility of the circuits simplifies packaging and enables flow to be cut off by simply constricting a portion of the circuit, while transparency enables visual monitoring of liquid flow in the circuit.
- a fitting for a blood circulating circuit of a dialysis machine comprising a first and a second mouth for connecting the fitting to a first and a second portion of the blood circulating circuit respectively; said fitting defining a third portion of said blood circulating circuit; and the fitting being characterized by comprising a tube by which to determine the absorption of electromagnetic waves by the blood; and a chamber having a wall movable as a function of the pressure of the blood.
- the present invention also relates to a measuring device .
- a measuring device designed to cooperate with a blood circulating circuit comprising a fitting as claimed in any one of Claims 1 to 11; the measuring device being characterized by comprising a seat for housing said fitting.
- Figure 1 shows a side view of a fitting in accordance with the present invention
- Figure 2 shows a plan view of the Figure 1 fitting
- Figure 3 shows a schematic front view, with parts removed for clarity, of a measuring device in accordance with the present invention
- Figure 4 shows a side view of a variation of the , Figure 1 fitting.
- Number 1 in Figures 1 and 2 indicates a fitting located between two portions 2 and 3 of a blood circulating circuit 4 of a dialysis machine (not shown) .
- Fitting 1 is designed for connection to a measuring device 5 shown in Figure 3, and comprises a tube 6 extending along an axis A; and a chamber 7, which is adjacent to and integral with tube 6, is located substantially on one side of axis A, and is substantially cylindrical with an axis B perpendicular to axis A.
- Fitting 1 comprises a mouth 8 for connection to portion 2; and a mouth 9 for connection to portion 3.
- fitting 1 defines a portion 10 of circuit 4 extending between portions 2 and 3, which are made of transparent, flexible material, normally PVC.
- Tube 6 and chamber 7 communicate directly to allow the blood to flow, in use, along fitting 1.
- tube 6 has a diameter Dl
- Cup 11 has a channel-shaped bottom 12. extending along axis A and connected to tube 6 and to mouth 9.
- Chamber 7 also comprises a cover 13 with a central hole 14; and an elastic membrane 15 gripped between cup 11 and cover 13 to close cup 11.
- Cup 11, tube 6, and mouths 8 and 9 are formed in one piece of rigid, , transparent material, which is connected to membrane 15 and cover 13.
- Cover 13 is made of the same material as tube 6 and cup 11, while membrane 15 is made of elastic material so as to flex alongside variations in the pressure of the blood.
- Tube 6 being used to measure the absorption of electromagnetic waves, which are affected greatly, for example, by the diameter Dl and the thickness of tube 6, is made to conform as closely as possible to nominal dimensions .
- the measuring device 5 is integral with the machine (not shown) , and has a seat 16 defined by a recess 17 formed in the body 18 of device 5.
- Recess 17 has a contour substantially identical with that of fitting 1 viewed from above, and is deep enough to house fitting 1 in seat 16 with cover 13 facing seat 16.
- Device 5 comprises two sensors having respective interfaces 19 and 20 housed in seat 16 and co-operating with fitting 1. More specifically, interface 19 forms part of a pressure sensor (not shown) , and co-operates with membrane 15 to determine deformation of membrane 15 and enable the pressure sensor to generate a signal related to the pressure of the blood flowing through fitting 1.
- Interface 20 forms part of a sensor for determining the absorption of electromagnetic waves by the blood along tube 6, and comprises electromagnetic wave emitters and detectors .
- Seat 16 is defined by a groove for housing tube 6 and partly housing circuit 4; and by an opening negatively reproducing the shape of chamber 7. Seat 16 is shaped to provide for foolproof connection of fitting 1 and measuring device 5, so that interface 19 fits accurately inside hole 14, and interface 20 accurately about tube 6.
- circuit 4 is connected in known manner to the dialysis machine
- fitting 1 is inserted inside seat 16 and fixed to measuring device 5.
- the blood flows through fitting 1 and deforms membrane 15, which is detected by interface 19 inserted inside hole 14.
- electromagnetic wave absorption by the blood flowing through fitting 1 is detected by interface 20.
- fitting 1 comprises a gripping member 21, which is connected to tube 6 at channel 12 of chamber 7, is located on the opposite side of axis A to cover 13, is arc-shaped, and is formed in one piece with tube 6 and cup 11.
- Gripping member 21 provides for further simplifying insertion and removal of the fitting 1 inside and from seat 16.
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Urology & Nephrology (AREA)
- Immunology (AREA)
- Emergency Medicine (AREA)
- External Artificial Organs (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02717035A EP1365820B1 (en) | 2001-03-02 | 2002-03-04 | Dialysis machine blood circulating circuit fitting |
JP2002569211A JP4128451B2 (en) | 2001-03-02 | 2002-03-04 | Dialysis machine blood circulation circuit fitting |
DE60220645T DE60220645T2 (en) | 2001-03-02 | 2002-03-04 | CONNECTING PIECE FOR THE EXTRACORPORAL BLOODING SYSTEM OF A DIALYSIS MACHINE |
CA002420563A CA2420563C (en) | 2001-03-02 | 2002-03-04 | Dialysis machine blood circulating circuit fitting |
US10/312,386 US7361267B2 (en) | 2001-03-02 | 2002-03-04 | Dialysis machine blood circulating circuit fitting |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO2001U000037 | 2001-03-02 | ||
IT2001TO000037U ITTO20010037U1 (en) | 2001-03-02 | 2001-03-02 | CONNECTION OF A BLOOD CIRCULATION CIRCUIT IN A DIDIALYSIS MACHINE. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002070041A1 true WO2002070041A1 (en) | 2002-09-12 |
Family
ID=11458403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2002/000131 WO2002070041A1 (en) | 2001-03-02 | 2002-03-04 | Dialysis machine blood circulating circuit fitting |
Country Status (10)
Country | Link |
---|---|
US (1) | US7361267B2 (en) |
EP (1) | EP1365820B1 (en) |
JP (1) | JP4128451B2 (en) |
KR (1) | KR100832048B1 (en) |
AT (1) | ATE364414T1 (en) |
CA (1) | CA2420563C (en) |
DE (1) | DE60220645T2 (en) |
ES (1) | ES2287259T3 (en) |
IT (1) | ITTO20010037U1 (en) |
WO (1) | WO2002070041A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7785284B2 (en) * | 2003-06-04 | 2010-08-31 | Gambro Lundia Ab | Joint for fluid transport lines for medical use |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8038639B2 (en) | 2004-11-04 | 2011-10-18 | Baxter International Inc. | Medical fluid system with flexible sheeting disposable unit |
US8057423B2 (en) | 2007-07-05 | 2011-11-15 | Baxter International Inc. | Dialysis system having disposable cassette |
US8114276B2 (en) | 2007-10-24 | 2012-02-14 | Baxter International Inc. | Personal hemodialysis system |
WO2010116982A1 (en) * | 2009-04-10 | 2010-10-14 | 独立行政法人国立循環器病研究センター | Head model for brain-imaging device and technique for producing same |
US9002655B2 (en) | 2010-05-03 | 2015-04-07 | Gambro Lundia Ab | Medical apparatus for extracorporeal blood treatment and method for determining a blood parameter value in a medical apparatus thereof |
US8328748B2 (en) * | 2010-09-13 | 2012-12-11 | Fresenius Medical Care Holdings, Inc. | Off-axis blood chamber |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4745279A (en) * | 1986-01-02 | 1988-05-17 | American Hospital Supply Corporation | Hematocrit measuring apparatus |
EP1078642A2 (en) * | 1999-08-09 | 2001-02-28 | Gambro, Inc., | Measuring and/or monitoring method, especially for the evaluation of pressure differences |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4077882A (en) * | 1976-09-27 | 1978-03-07 | Ronald Gangemi | Isolating and blood pressure transmitting apparatus for extracorporeal blood treatment system |
SE415728B (en) * | 1977-03-07 | 1980-10-27 | Gambro Ab | COUPLING |
JPH0769202B2 (en) | 1987-03-10 | 1995-07-26 | テルモ株式会社 | Ultrasonic fluid meter |
US6039078A (en) * | 1989-09-22 | 2000-03-21 | Tamari; Yehuda | Inline extracorporeal reservoir and pressure isolator |
US5158091A (en) * | 1990-11-30 | 1992-10-27 | Ivac Corporation | Tonometry system for determining blood pressure |
US5598507A (en) * | 1994-04-12 | 1997-01-28 | Xerox Corporation | Method of speaker clustering for unknown speakers in conversational audio data |
JPH0924026A (en) | 1995-07-10 | 1997-01-28 | Otsuka Pharmaceut Factory Inc | Pressure measuring device for blood circuit |
JPH11226119A (en) | 1998-02-17 | 1999-08-24 | Nissho Corp | Water removing quantity-monitoring mechanism in dialyzer |
DE19837667A1 (en) | 1998-08-19 | 2000-03-02 | Fresenius Medical Care De Gmbh | Multifunction sensor |
US6171253B1 (en) * | 1999-05-04 | 2001-01-09 | Apex Medical, Inc. | Flat tube pressure sensor |
ITBO20010355A1 (en) * | 2001-06-05 | 2002-12-05 | Gambro Dasco Spa | METHOD AND DEVICE TO DETECT BLOOD PRESSURE IN A CIRCUIT OF A DIALYSIS MACHINE IN A NON-INTRUSIVE WAY |
-
2001
- 2001-03-02 IT IT2001TO000037U patent/ITTO20010037U1/en unknown
-
2002
- 2002-03-04 CA CA002420563A patent/CA2420563C/en not_active Expired - Fee Related
- 2002-03-04 EP EP02717035A patent/EP1365820B1/en not_active Expired - Lifetime
- 2002-03-04 DE DE60220645T patent/DE60220645T2/en not_active Expired - Lifetime
- 2002-03-04 US US10/312,386 patent/US7361267B2/en not_active Expired - Fee Related
- 2002-03-04 WO PCT/IT2002/000131 patent/WO2002070041A1/en active IP Right Grant
- 2002-03-04 JP JP2002569211A patent/JP4128451B2/en not_active Expired - Fee Related
- 2002-03-04 KR KR1020027014663A patent/KR100832048B1/en not_active IP Right Cessation
- 2002-03-04 ES ES02717035T patent/ES2287259T3/en not_active Expired - Lifetime
- 2002-03-04 AT AT02717035T patent/ATE364414T1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4745279A (en) * | 1986-01-02 | 1988-05-17 | American Hospital Supply Corporation | Hematocrit measuring apparatus |
EP1078642A2 (en) * | 1999-08-09 | 2001-02-28 | Gambro, Inc., | Measuring and/or monitoring method, especially for the evaluation of pressure differences |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7785284B2 (en) * | 2003-06-04 | 2010-08-31 | Gambro Lundia Ab | Joint for fluid transport lines for medical use |
Also Published As
Publication number | Publication date |
---|---|
KR20020093112A (en) | 2002-12-12 |
US20040019314A1 (en) | 2004-01-29 |
US7361267B2 (en) | 2008-04-22 |
JP2004519282A (en) | 2004-07-02 |
KR100832048B1 (en) | 2008-05-27 |
EP1365820A1 (en) | 2003-12-03 |
EP1365820B1 (en) | 2007-06-13 |
CA2420563A1 (en) | 2002-09-12 |
DE60220645T2 (en) | 2008-06-26 |
ATE364414T1 (en) | 2007-07-15 |
CA2420563C (en) | 2009-09-22 |
ITTO20010037V0 (en) | 2001-03-02 |
DE60220645D1 (en) | 2007-07-26 |
JP4128451B2 (en) | 2008-07-30 |
ES2287259T3 (en) | 2007-12-16 |
ITTO20010037U1 (en) | 2002-09-02 |
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