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WO2009060103A1 - Valve cardiaque artificielle - Google Patents

Valve cardiaque artificielle Download PDF

Info

Publication number
WO2009060103A1
WO2009060103A1 PCT/ES2008/000167 ES2008000167W WO2009060103A1 WO 2009060103 A1 WO2009060103 A1 WO 2009060103A1 ES 2008000167 W ES2008000167 W ES 2008000167W WO 2009060103 A1 WO2009060103 A1 WO 2009060103A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve according
valve
tongue
semi
duct
Prior art date
Application number
PCT/ES2008/000167
Other languages
English (en)
Spanish (es)
Inventor
Manuel Muñoz Saiz
Original Assignee
Munoz Saiz Manuel
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
Priority claimed from ES200800426A external-priority patent/ES2357061B1/es
Application filed by Munoz Saiz Manuel filed Critical Munoz Saiz Manuel
Publication of WO2009060103A1 publication Critical patent/WO2009060103A1/fr

Links

Classifications

    • 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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
    • 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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2403—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with pivoting rigid closure members
    • 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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2475—Venous valves

Definitions

  • valve with a longitudinally profiled hydrodynamic profile tab. The only one that is single piece, resistant and without turning axes.
  • valve that, due to its small dimensions and because it is compressible, allows it to be introduced by catheterization through veins and arteries, applying it and depositing it in external points to the heart and in series with the damaged valves, avoiding the opening of the thorax, diaphragm, membranes of the thorax, pericarp, myocardium, etc. These points do not show movement, which makes them safer and is valid to replace all valves.
  • the artificial heart valve of the invention consists of a portion of tubular element, or conduit, which carries integrated to its inner wall or held by the flat or anterior end, a swinging tongue or tongue, of longitudinally hydrodynamic profile, positioned inclined with respect to the longitudinal axis of the duct, which allows the passage of blood flow in one direction when pressed by it and prevents its recoil by adapting to the inside of the duct.
  • the conduit or tubular element can be of circular, semicircular, semi-oval or rectangular-semicircular section and all of them with rounded corners.
  • the tabs may be covered by at least one layer or membrane of elastic material, resistant and durable. Some of them can be reinforced internally or laterally with a mesh or fabric of natural or synthetic fibers. The surface of the tongue and the inside of the duct is smooth.
  • the tabs may have at least one flange on their periphery, preferably two or three, to facilitate sealing.
  • the tabs can be flexible, rigid and semi-rigid elastic, have a semi-oval or rectangle shape with a semi-oval end, with their rounded corners, and can be slightly curved transversely, can oscillate around the peripheral, straight or large curvature anterior end by means of internal filaments, strap or flexible steel reinforcement band that also serve as support. It can also oscillate around an axis. In the latter case, the tongue can be rigid using more resistant and durable materials. Biocompatible and antithrombotic capacity materials, steel, cobalt and titanium alloys, polyester, acrylics, fluorocarbons (Teflon), some silicones, polyamides, polyurethanes and polyethylenes should be used. Other materials, polymers or metal alloys having similar characteristics can also be used.
  • the rigid tabs can be made of graphite with a layer of pyrolytic carbon coated with stainless steel or titanium.
  • the face of the tongue that contacts the conduit when closed can be made of soft material, very elastic, resistant and durable. Swing double fin valves can be used on a support in the duct shaft. Several tabs can be placed in series that provide more security.
  • the duct acts as a resistant and insulating valve housing, its inner wall can be resistant and elastic. Due to its simplicity and small dimensions the valves can be placed in the arteries or veins in areas outside the heart, being subject to compression of the same and / or by a widening of the duct and some rings or springs. Sausages or stitches can also be placed at the ends of the arteries or veins. For sewing to the artery or veins the valve will be covered with a soft layer or tissue
  • the valves can be placed by catheterization, in this case they will be flexible, from the large veins or arteries that circulate through the limbs, tablets can be introduced leaving them to expand in the desired place, when said veins or arteries they are not excessively brittle, they can also be placed, inside the veins or arteries, without having to open the heart only the chest and related membranes, thirdly they can also be placed inside the heart, but this solution is the less appropriate
  • the lateral joints of the tabs with the duct are rounded, in this way blood is never trapped in the junction corners between them.
  • the inclination of the tongues is approximately twenty to forty degrees with respect to the axis of the conduit and can be attached to the conduit: forming a single piece, by gluing, sewing, rivets, bolts, screws, tongue and groove, etc. A widening of the duct can be used in place of the tongue so that the blood flow is greater and in turn to prevent its displacement. This next to the type of tongue very inclined allows the passage of great amount of blood.
  • valve assembly consisting of several elements can be covered with a layer of elastic and / or protective material resulting externally in a single piece element.
  • the catheter transports the compressed valve by three or four of its generatrices to the corresponding place.
  • the tongue in a semi-oval or rectangle shape with a semi-oval end, of longitudinally hydrodynamic profile, which has in the anterior edge or in an eccentric area an axis with two very bulky ends which move very loosely on paths cavities in the duct wall, allowing the opening and closing of the valve to a stop by turning.
  • the tongue should have a density similar to that of the blood in which it will float.
  • the cavities in the duct wall can be internal to it or be located in external bulges, in the latter case the restriction of blood flow is minimal.
  • either the shaft or the cavities must have a very smooth and resistant surface, chromium-cobalt or similar, the opposite can be made of a soft material covered with dracon or Teflon or similar material.
  • Figure 1 shows a schematic and sectioned view of the oscillating tongue valve of the invention.
  • Figures 2 through 9, 13 and 15 show schematic and sectioned views of variants of the valve of the invention. All of them are covered with a layer of material not shown in the figure that transforms them externally into single pieces.
  • Figures 10 and 11 show sectional views of tongue variants.
  • Figure 12 shows a schematic and partially cross-sectional view of the valve of the invention.
  • Figure 14 shows a schematic and partially sectioned plan view of a variant of the valve of the invention.
  • Figure 16 shows a schematic and sectioned view of a heart incorporating the valves of the invention.
  • FIG 1 shows the valve constituted by the tubular element or conduit (1) in whose integrated inner holder, and held by the front end, the oscillating tongue (2) positioned inclined, of longitudinally hydrodynamic profile, the which allows the passage of blood flow in one direction and avoids it in the opposite direction, the steel filaments or threads (5) are optional and reinforce, support and increase the duration of the tongue and therefore of the valve.
  • the lateral joints of the tongue with the conduit (3 and 4) are rounded.
  • the arrow indicates the direction of blood circulation.
  • Figure 2 shows the valve constituted by the tubular element (1), the oscillating tongue (2) positioned inclined, which carries inside the strap-support (5a) and the rounded sides of the tongue (3 and 4).
  • Figure 3 shows the valve constituted by the tubular element (1), the oscillating tongue (2) and inclined, placed in the widening (6) that prevents the flow restriction and the displacement of the valve, and the rounded sides of the tab (3 and 4).
  • Figure 4 shows the valve constituted by the tubular element (1), the oscillating tongue (2) positioned inclined, glued and secured by means of the screw and nut (19). placed in front of the widening of the duct (6) and its rounded sides (3 and 4).
  • Figure 5 shows the valve constituted by the tubular element (1), the oscillating tongue portion (2a) and inclined, whose end (8) is introduced into the support section (7) and the rounded sides of the tongue (3 and 4).
  • Figure 6 shows the valve constituted by the tubular element (1), the oscillating and inclined tongue (2), the end of which (10) is inserted or covered by the duct wall, the tongue is covered with the layers (11, 12 and 13) and the rounded sides of the tongue (3 and 4).
  • the widening (6a) and the rings or spring (21) allow to compress and expand by holding inside the veins and arteries.
  • Figure 7 shows the valve constituted by the tubular element (1), the oscillating and inclined tongue (2), the end of which (10) is inserted or covered by the duct wall, the rounded sides of the tongue (3 and 4 ) and is introduced into the vein or artery (14).
  • Figure 8 shows the valve constituted by the tubular element (1), the oscillating tabs in series (2) and inclined the rounded sides of the tabs (3 and 4).
  • Figure 9 shows the valve constituted by the tubular element (1), the oscillating tongue portion (2c) and inclined, which oscillates around the axis (15) with the opposition of the strip or spring (17) and which is connected to the duct along the section or support (16) that carries the rounded sides (3 and 4).
  • Figure 10 shows the cross section of a tongue (2) in the form of a segment with rounded corners.
  • Figure 11 shows the cross section of an tongue (2) in an arcuate shape.
  • Figure 12 shows the semicircular section duct (1) and the tongue (2) adapted to the walls of the duct and in closed position, rotates around edge (20).
  • Figure 13 shows the semicircular section duct (1) and the tongue of semi-oval or rectangle shape with a semi-oval end (2d), of longitudinally hydrodynamic profile, which has an axis with two very bulky ends (22) ) which travel very easily in two cavities (23) in the duct wall allowing the valve to open and close until it stops (24).
  • the axis with the bulky ends could be located anywhere in the eccentric area of the anterior half of the tongue.
  • Figure 14 shows the duct (1) and the oval-rectangular tongue (2) with the clamping end of greater curvature and of a longitudinally hydrodynamic profile.
  • the tongue can be rotated around the eccentric shaft (15a).
  • Figure 15 shows the double tongue valve (2 and 2a), which oscillate on or around the support (25) in the axis of the duct.
  • Figure 16 shows the conduit (1) valves (18 and 18a) placed by catheterization, in an area outside the heart, in this case inside the vena cava. It replaces the operation of the tricuspid valve without the need for a major intervention. It would be valid for rupture of the valves of said valve or in case of stenosis of the same, in the latter case it would have to have widened the valve or started its leaflets.

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne une valve cardiaque artificielle formée d'une partie d'élément tubulaire, ou conduit, lequel comprend une langue ou languette oscillante intégrée dans sa paroi interne ou fixée par son extrémité plane ou antérieure. Ladite languette présente un profil longitudinal hydrodynamique, est inclinée par rapport à l'axe longitudinal du conduit, et permet le passage du flux sanguin dans un sens lorsqu'elle est poussée par celui-ci et évite son retour par adaptation à l'intérieur du conduit. Le conduit ou élément tubulaire peut présenter une section circulaire, semi-circulaire, semi-ovale ou rectangulo-semi-circulaire, ces sections présentant toutes des angles arrondis. Les languettes peuvent être recouvertes d'au moins une couche ou membrane faite d'un matériau élastique résistant et durable. L'une d'elles peut être renforcée dans sa partie interne ou latérale à l'aide d'une maille ou tissu de fibres naturelles ou synthétiques. Les languettes peuvent être élastiques, flexibles, rigides et semi-rigides, et présentent une forme semi-ovale ou rectangulaire avec une extrémité semi-ovale, et des angles arrondis.
PCT/ES2008/000167 2007-11-05 2008-03-27 Valve cardiaque artificielle WO2009060103A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES200703143 2007-11-05
ESP200703143 2007-11-05
ESP200800426 2008-02-13
ES200800426A ES2357061B1 (es) 2008-02-13 2008-02-13 V�?lvula cardiaca artificial.

Publications (1)

Publication Number Publication Date
WO2009060103A1 true WO2009060103A1 (fr) 2009-05-14

Family

ID=40625398

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2008/000167 WO2009060103A1 (fr) 2007-11-05 2008-03-27 Valve cardiaque artificielle

Country Status (1)

Country Link
WO (1) WO2009060103A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926215A (en) * 1973-08-03 1975-12-16 Nat Res Dev Fluid control valves
US5358518A (en) * 1991-06-25 1994-10-25 Sante Camilli Artificial venous valve
US20030055492A1 (en) * 1999-08-20 2003-03-20 Shaolian Samuel M. Transluminally implantable venous valve
US20040260390A1 (en) * 2001-07-19 2004-12-23 The Cleveland Clinic Foundation Prosthetic valve and method for making same
US20060058889A1 (en) * 2004-09-10 2006-03-16 Case Brian C Prosthetic valve with pores

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926215A (en) * 1973-08-03 1975-12-16 Nat Res Dev Fluid control valves
US5358518A (en) * 1991-06-25 1994-10-25 Sante Camilli Artificial venous valve
US20030055492A1 (en) * 1999-08-20 2003-03-20 Shaolian Samuel M. Transluminally implantable venous valve
US20040260390A1 (en) * 2001-07-19 2004-12-23 The Cleveland Clinic Foundation Prosthetic valve and method for making same
US20060058889A1 (en) * 2004-09-10 2006-03-16 Case Brian C Prosthetic valve with pores

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