WO2008024224A3 - Arteriovenous graft blood flow controllers and methods - Google Patents

Arteriovenous graft blood flow controllers and methods Download PDF

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Publication number
WO2008024224A3
WO2008024224A3 PCT/US2007/017910 US2007017910W WO2008024224A3 WO 2008024224 A3 WO2008024224 A3 WO 2008024224A3 US 2007017910 W US2007017910 W US 2007017910W WO 2008024224 A3 WO2008024224 A3 WO 2008024224A3
Authority
WO
WIPO (PCT)
Prior art keywords
arteriovenous graft
blood flow
restrictor apparatus
methods
subject
Prior art date
Application number
PCT/US2007/017910
Other languages
French (fr)
Other versions
WO2008024224A2 (en
Inventor
Judah Weinberger
Nick Gately
Mark Gelfand
Original Assignee
Univ Columbia
Judah Weinberger
Nick Gately
Mark Gelfand
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Columbia, Judah Weinberger, Nick Gately, Mark Gelfand filed Critical Univ Columbia
Publication of WO2008024224A2 publication Critical patent/WO2008024224A2/en
Publication of WO2008024224A3 publication Critical patent/WO2008024224A3/en
Priority to US12/389,986 priority Critical patent/US20090234431A1/en

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
    • A61M1/36—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
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3655—Arterio-venous shunts or fistulae
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06—Blood vessels
    • A61F2002/068—Modifying the blood flow model, e.g. by diffuser or deflector
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter

Abstract

Blood flow restrictors are discussed. In some examples, a restrictor apparatus includes a converging entry portion, a diverging exit portion, and optionally a narrowed portion therebetween to restrict the flow of blood through an arteriovenous graft from a subject's artery to a subject's vein. The structure of the restrictor apparatus decreases the pressure and volume of blood flow between the subject's artery and vein to reduce or prevent hyperplasia or stenosis on the venous side, an increased load on the heart, or blood steal, among other things. The restrictor apparatus can be separate from, but couplable to, the arteriovenous graft. Alternatively, the restrictor apparatus can be integral with the arteriovenous graft. Methods of forming and using the restrictor apparatus are also discussed.
PCT/US2007/017910 2006-08-22 2007-08-13 Arteriovenous graft blood flow controllers and methods WO2008024224A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/389,986 US20090234431A1 (en) 2006-08-22 2009-02-20 Arteriovenous graft blood flow controllers and methods

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82324206P 2006-08-22 2006-08-22
US60/823,242 2006-08-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/389,986 Continuation US20090234431A1 (en) 2006-08-22 2009-02-20 Arteriovenous graft blood flow controllers and methods

Publications (2)

Publication Number Publication Date
WO2008024224A2 WO2008024224A2 (en) 2008-02-28
WO2008024224A3 true WO2008024224A3 (en) 2008-04-24

Family

ID=38926317

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/017910 WO2008024224A2 (en) 2006-08-22 2007-08-13 Arteriovenous graft blood flow controllers and methods

Country Status (1)

Country Link
WO (1) WO2008024224A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10258741B2 (en) * 2016-12-28 2019-04-16 Cequr Sa Microfluidic flow restrictor and system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5755779A (en) * 1995-12-07 1998-05-26 Horiguchi; Sachio Blood stream adjuster
US20020107536A1 (en) * 2001-02-07 2002-08-08 Hussein Hany M. Device and method for preventing kidney failure
WO2004093937A2 (en) * 2003-04-23 2004-11-04 Interrad Medical, Inc. Dialysis valve and method
US20050033217A1 (en) * 2003-08-05 2005-02-10 Villafana Manuel A. Grafted network incorporating a multiple channel fluid flow connector
US20050137614A1 (en) * 2003-10-08 2005-06-23 Porter Christopher H. System and method for connecting implanted conduits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5755779A (en) * 1995-12-07 1998-05-26 Horiguchi; Sachio Blood stream adjuster
US20020107536A1 (en) * 2001-02-07 2002-08-08 Hussein Hany M. Device and method for preventing kidney failure
WO2004093937A2 (en) * 2003-04-23 2004-11-04 Interrad Medical, Inc. Dialysis valve and method
US20050033217A1 (en) * 2003-08-05 2005-02-10 Villafana Manuel A. Grafted network incorporating a multiple channel fluid flow connector
US20050137614A1 (en) * 2003-10-08 2005-06-23 Porter Christopher H. System and method for connecting implanted conduits

Also Published As

Publication number Publication date
WO2008024224A2 (en) 2008-02-28

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