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WO1999065559A1 - Tube permettant de former un vaisseau artificiel - Google Patents

Tube permettant de former un vaisseau artificiel Download PDF

Info

Publication number
WO1999065559A1
WO1999065559A1 PCT/SI1999/000017 SI9900017W WO9965559A1 WO 1999065559 A1 WO1999065559 A1 WO 1999065559A1 SI 9900017 W SI9900017 W SI 9900017W WO 9965559 A1 WO9965559 A1 WO 9965559A1
Authority
WO
WIPO (PCT)
Prior art keywords
length section
patient
artificial vessel
inside bore
hose
Prior art date
Application number
PCT/SI1999/000017
Other languages
English (en)
Inventor
Rajko Kenda
Jadranka BUTUROVIĆ-PONIKVAR
Original Assignee
Klinični center Ljubljana
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 Klinični center Ljubljana filed Critical Klinični center Ljubljana
Priority to AU43064/99A priority Critical patent/AU4306499A/en
Publication of WO1999065559A1 publication Critical patent/WO1999065559A1/fr

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621Extra-corporeal blood circuits
    • A61M1/3653Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3655Arterio-venous shunts or fistulae
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis

Definitions

  • the present invention relates to a hose for making an artificial vessel, particularly for a permanent shunt-type interconnection of an artery and a vein, for example within an arm, in order to recurrently connect and disconnect a patient to and from a dialyzer.
  • the matter of concern in prior art is a hose of plastics cut to a suitable length as dry goods, the hose having a uniform nominal inside bore smaller than that of the artery at the implantation site and not larger than that of the vein at the implantation site, both conditioned by blood phenomena influenced thereby.
  • Flow circumstances in a closed patient's artery/vein system having implanted an artificial vessel of the kind set forth above are different in the state when the patient is not connected to a dialyzer i.e. most of the time, in comparison to the ones in the state when the patient is connected to the dialyzer.
  • At least three mutually independent threshold values of blood flow are to be taken into consideration, all concerning the artery.
  • the blood flow through the dialyzer must exceed a minimum value at which the functioning of the apparatus is undisturbed, which again depends on the particular properties of blood.
  • a critical, hence decisive, blood-conveying member of the above-outlined arrangement is a needle.
  • the needle occupies a part of the nominal inside bore of the artificial vessel.
  • the said requirement relates to the remaining nominal inside bore of the artificial vessel i.e. the gap between the inner mantle surface of the hose and the outer mantle surface of the needle.
  • a hose for making an artificial vessel which comprises:
  • a first length section adapted to be joined, by one of its ends, to a patient's artery, whose nominal inside bore meets the above requirements (2) and (3),
  • a second length section adapted to follow the said first length section, whose nominal inside bore is reduced in comparison to the one of the first length section, thus constituting a throttling length section, whereat its nominal inside bore fulfills the above requirement (2), and
  • a third length section adapted to be joined, by one of its ends, to the said second length section and, by the other one, to a patient's vein, whose nominal inside bore also meets the above requirements (2) and (3), the said third length section preferably having an inside bore equal to that of the first length section.
  • the three length sections are suitably assembled to form one piece.
  • the second length section between the first and third length sections does not generate irregularities of blood flow, particularly a deceleration and/or vortexes that could cause the coagulation of blood or harm it in some other way.
  • the nominal inside bore of the said second length section is not smaller than the difference of the flow areas between the first and the third length sections, respectively, and the blood-flow-affected projection surface of the wetted part of either shunt needle installed therein for the interconnection of the patient and the machine.
  • aper se known transformation of a circular inside bore to an elliptic one with maintaining the perimeter constant is used for creating a throttling member.
  • the nominal inside bore of the ellipse is a multiple of the nominal inside bore of the respective circle with a factor equal to the quotient of the minor to the major axes of the ellipse. If e.g. the said quotient equals Vz, the elliptic inside bore of the vessel amounts to one half of the circular one.
  • a prior art hose can be transformed to an artificial vessel according to this embodiment of the invention simply by using an outer clamp providing a defined clearance.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Cardiology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne un tube permettant de former un vaisseau artificiel, se prêtant particulièrement à une interconnexion permanente à dérivation d'une artère et d'une veine, par exemple dans un bras afin d'assurer à un patient une connexion et déconnexion répétée sur un dialyseur. Ce tube comprend une première section longitudinale conçue pour être assemblée par une de ses extrémités à l'artère d'un patient, une seconde section longitudinale dans le prolongement de la première section dont l'alésage intérieur nominal est inférieur à la première section, ce qui constitue une section d'étranglement et une troisième section longitudinale conçue pour être assemblée par une de ses extrémités à ladite seconde section longitudinale et par l'autre extrémité à la veine d'un patient.
PCT/SI1999/000017 1998-06-19 1999-06-18 Tube permettant de former un vaisseau artificiel WO1999065559A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43064/99A AU4306499A (en) 1998-06-19 1999-06-18 Hose for making an artificial vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SIP-9800177 1998-06-19
SI9800177A SI9800177A (sl) 1998-06-19 1998-06-19 Umetna žila

Publications (1)

Publication Number Publication Date
WO1999065559A1 true WO1999065559A1 (fr) 1999-12-23

Family

ID=20432288

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SI1999/000017 WO1999065559A1 (fr) 1998-06-19 1999-06-18 Tube permettant de former un vaisseau artificiel

Country Status (3)

Country Link
AU (1) AU4306499A (fr)
SI (1) SI9800177A (fr)
WO (1) WO1999065559A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150217039A1 (en) * 2004-12-15 2015-08-06 Rox Medical, Inc. Method of treating copd with artificial arterio-venous fistula and flow mediating systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638649A (en) * 1969-07-07 1972-02-01 Univ Minnesota Implantable prosthetic pass-through device
US3882862A (en) * 1974-01-11 1975-05-13 Olga Berend Arteriovenous shunt
US3998222A (en) * 1974-04-15 1976-12-21 Shihata Alfred A Subcutaneous arterio-venous shunt with valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638649A (en) * 1969-07-07 1972-02-01 Univ Minnesota Implantable prosthetic pass-through device
US3882862A (en) * 1974-01-11 1975-05-13 Olga Berend Arteriovenous shunt
US3998222A (en) * 1974-04-15 1976-12-21 Shihata Alfred A Subcutaneous arterio-venous shunt with valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DRASLER W J ET AL: "VENTURI GRAFTS FOR HEMODIALYSIS ACCESS", ASAIO TRANSACTIONS, VOL. 36, NR. 3, PAGE(S) 753 - 757, XP000204515 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150217039A1 (en) * 2004-12-15 2015-08-06 Rox Medical, Inc. Method of treating copd with artificial arterio-venous fistula and flow mediating systems
US9669148B2 (en) * 2004-12-15 2017-06-06 Rox Medical, Inc. Method of treating COPD with artificial arterio-venous fistula and flow mediating systems

Also Published As

Publication number Publication date
SI9800177A (sl) 1999-12-31
AU4306499A (en) 2000-01-05

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