CA2489368A1 - Mitral valve annuloplasty ring having a posterior bow - Google Patents

Mitral valve annuloplasty ring having a posterior bow Download PDF

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Publication number
CA2489368A1
CA2489368A1 CA002489368A CA2489368A CA2489368A1 CA 2489368 A1 CA2489368 A1 CA 2489368A1 CA 002489368 A CA002489368 A CA 002489368A CA 2489368 A CA2489368 A CA 2489368A CA 2489368 A1 CA2489368 A1 CA 2489368A1
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CA
Canada
Prior art keywords
ring
posterior
annuloplasty ring
ring body
annuloplasty
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002489368A
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French (fr)
Other versions
CA2489368C (en
Inventor
Patrick Mccarthy
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Edwards Lifesciences Corp
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Individual
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
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Publication of CA2489368A1 publication Critical patent/CA2489368A1/en
Application granted granted Critical
Publication of CA2489368C publication Critical patent/CA2489368C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
    • A61F2/2445—Annuloplasty rings in direct contact with the valve annulus
    • A61F2/2448—D-shaped rings
    • 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
    • A61F2250/0018—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 elasticity, stiffness or compressibility

Landscapes

  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic 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)
  • Surgical Instruments (AREA)

Abstract

A mitral heart valve annuloplasty ring (30) having a posterior bow that conforms to an abnormal posterior aspect of the mitral annulus. The ring (30 ) may be generally oval having a major axis and a minor axis, wherein the posterior bow may be centered along the minor axis or offset in a posterior section (36). The ring may be substantially planar, or may include upward bo ws on either side of the posterior bow. The ring may include a ring body (30) surrounded by a suture-permeable fabric sheath, and the ring body may be formed of a plurality of concentric ring elements (70a,70b,70c,70d). The rin g is semi-rigid and the posterior bow is stiff enough to withstand deformation once implanted and subjected to normal physiologic stresses. The ring elemen ts (70a,70b,70c,70d) may be bands of semi-rigid material. A method of repairing an abnormal mitral heart valve annulus having a depressed posterior aspect includes providing a ring with posterior bow and implanting the ring to support the annulus without unduly stressing the attachment sutures.

Claims (20)

1. An annuloplasty ring for implantation in a mural valve annulus, said annuloplasty ring comprising:
a rounded ring body having an anterior section and a posterior section;
wherein the ring body is oriented about a central flow axis, the flow axis defining an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mural valve annulus; and, wherein in the posterior section the ring body bows downward out of a plane perpendicular to the central flow axis.
2. The annuloplasty ring of claim 1, wherein the ring body bows downward between about 2-15 mm from one end thereof to a lowest point.
3. The annuloplasty ring of claim 2, wherein the ring body bows downward between about 4-8 mm from one end thereof to a lowest point.
4. The annuloplasty ring of claim 1, wherein the bow in the ring body is centered in the posterior section.
5. The annuloplasty ring of claim 1, wherein the bow in the ring body is off center in the posterior section.
6. The annuloplasty ring of claim 1, wherein the ring body is made of a malleable material such that the bow in the ring body may be manually reshaped.
7. The annuloplasty ring of claim 1, wherein the ring body is made of a semi-rigid material that will retain its posterior bow in opposition to the stresses that will be imparted by muscles of the heart throughout each beating cycle.
8. The annuloplasty ring of claim 1, wherein the ring body is substantially planar except in the posterior section.
9. The annuloplasty ring of claim 1, wherein in the anterior section the ring body bows upward from one end thereof to a lowest point.
10. The annuloplasty ring of claim 1, wherein in plan view as seen along the flow axis the ring body generally defines an oval shape with a major axis perpendicular to a minor axis, wherein the minor axis bisects both the anterior and posterior sections, and wherein the bow in the posterior section begins at symmetric locations across the minor axis that are spaced from the major axis around the ring body by an angle 0 of between about 0-45°.
11. The annuloplasty ring of claim 10, wherein the angle 0 is about 30°.
12. The annuloplasty ring of claim 1, wherein the ring body further includes two upward bows on either side of the downward bow on the posterior section.
13. The annuloplasty ring of claim 12, wherein the ring body bows downward between about 2-15 mm from one end thereof to a lowest point.
14. The annuloplasty ring of claim 1, wherein the ring body comprises a plurality of ring elements concentrically disposed.
15. The annuloplasty ring of claim 14, further including a polymer strip in between each ring element.
16. The annuloplasty ring of claim 14, wherein the ring elements comprise bands that have a substantially larger height in the flow axis dimension than in the dimension perpendicular to the flow axis.
17. The annuloplasty ring of claim 16, wherein the ring elements have varying heights so that the ring body is more flexible in the posterior section than around the remainder of the ring body.
18. A method of repairing a mural heart valve annulus that has a posterior aspect that is depressed downward along the blood flow axis relative to an anterior aspect, comprising:
implanting an annuloplasty ring having an anterior section sized to fit the anterior aspect of the annulus and a posterior section sized to the posterior aspect, wherein the ring posterior section bows downward parallel to the central axis relative to the anterior section.
19. The method of claim 18, wherein the annuloplasty ring is malleable and the surgeon adjusts the bow in the posterior section manually.
20. A method of repairing a mitral heart valve annulus that has a posterior aspect, an anterior aspect, and a blood flow axis, comprising:
inspecting the shaped of the mitral annulus;
selecting a three-dimensional annuloplasty ring based on the shape of the mural annulus, the annuloplasty ring having an anterior section and a posterior section generally arranged around a central axis, the central axis defining an upward direction and a downward direction, wherein the ring posterior section bows downward out of a plane perpendicular to the central axis; and implanting the annuloplasty ring so that the ring posterior section attaches to the posterior aspect of the mitral valve annulus and the posterior section bows in the blood flow direction.
CA2489368A 2002-07-08 2003-07-03 Mitral valve annuloplasty ring having a posterior bow Expired - Lifetime CA2489368C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/192,516 2002-07-08
US10/192,516 US6858039B2 (en) 2002-07-08 2002-07-08 Mitral valve annuloplasty ring having a posterior bow
PCT/US2003/021208 WO2004004607A1 (en) 2002-07-08 2003-07-03 Mitral valve annuloplasty ring having a posterior bow

Publications (2)

Publication Number Publication Date
CA2489368A1 true CA2489368A1 (en) 2004-01-15
CA2489368C CA2489368C (en) 2011-08-23

Family

ID=30000029

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2489368A Expired - Lifetime CA2489368C (en) 2002-07-08 2003-07-03 Mitral valve annuloplasty ring having a posterior bow

Country Status (9)

Country Link
US (1) US6858039B2 (en)
EP (1) EP1519695B1 (en)
JP (1) JP4384978B2 (en)
AT (1) ATE339934T1 (en)
AU (1) AU2003248833B2 (en)
BR (1) BR0312502B1 (en)
CA (1) CA2489368C (en)
DE (1) DE60308523T2 (en)
WO (1) WO2004004607A1 (en)

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