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Patentes

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Número de publicaciónUS20060247492 A1
Tipo de publicaciónSolicitud
Número de solicitudUS 11/479,681
Fecha de publicación2 Nov 2006
Fecha de presentación30 Jun 2006
Fecha de prioridad25 Oct 2000
También publicado comoUS7070618, US20020065554
Número de publicación11479681, 479681, US 2006/0247492 A1, US 2006/247492 A1, US 20060247492 A1, US 20060247492A1, US 2006247492 A1, US 2006247492A1, US-A1-20060247492, US-A1-2006247492, US2006/0247492A1, US2006/247492A1, US20060247492 A1, US20060247492A1, US2006247492 A1, US2006247492A1
InventoresRichard Streeter
Cesionario originalStreeter Richard B
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Mitral shield
US 20060247492 A1
Resumen
A valve shield comprising a shaped sheet of material adapted to be affixed to the annulus of a valve and adapted to extend over at least a portion of at least one leaflet of the valve so as to assist or replace the closing function of that valve leaflet.
Imágenes(5)
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Reclamaciones(18)
1. A valve shield comprising a shaped sheet of material adapted to be affixed to the annulus of a valve and adapted to extend over at least a portion of at least one leaflet of the valve so as to assist or replace the closing function of that valve leaflet.
2. A valve shield according to claim 1 wherein the sheet of material is adapted to prevent leaflet prolapse.
3. A valve shield according to claim 2 wherein the sheet of material is crescent shaped.
4. A valve shield according to claim 3 wherein the portion of the sheet of material extending over at least a portion of the at least one leaflet includes at least one opening therein.
5. A valve shield according to claim 3 wherein the portion of the sheet of material extending over at least a portion of the at least one leaflet is substantially solid.
6. A valve shield according to claim 2 wherein the sheet of material is adapted to be fastened to the annulus of the valve with sutures.
7. A valve shield according to claim 6 wherein the sheet of material includes preformed holes for receiving the suture.
8. A valve shield according to claim 2 wherein the sheet of material is adapted to be fastened to the annulus of the valve with staples.
9. A valve shield according to claim 8 wherein the sheet of material includes staples formed integral therewith.
10. A valve shield according to claim 2 wherein the material comprises biological material.
11. A valve shield according to claim 2 wherein the material comprises periocardium.
12. A valve shield according to claim 2 wherein the material comprises non-biological material.
13. A valve shield according to claim 1 wherein the material is round and includes at least one opening therein.
14. A valve shield according to claim 1 wherein the shaped sheet of material comprises a wire frame.
15. A valve shield according to claim 2 wherein the shaped sheet of material comprises a crescent shape with a mid-line projection adapted to support a second leaflet against prolapse.
16. A valve shield according to claim 1 wherein the sheet of material is adapted to extend over at least two leaflets.
17. A valve shield according to claim 16 wherein the sheet of material includes at least one opening therein.
18. A method for reducing regurgitation in a valve having a plurality of leaflets, said method comprising:
providing a valve shield comprising a shaped sheet of material; and
affixing the valve shield to the annulus of the valve so that it extends over at least a portion of at least one leaflet of the valve so as to assist or replace the closing function of that valve leaflet.
Descripción
    REFERENCE TO PENDING PRIOR PATENT APPLICATION
  • [0001]
    This patent application claims benefit of pending prior U.S. Provisional Patent Application Ser. No. 60/243,234, filed Oct. 25, 2000 by Richard B. Streeter for MITRAL SHIELD, which patent application is hereby incorporated herein by reference.
  • FIELD OF THE INVENTION
  • [0002]
    This invention relates to surgical apparatus and methods in general, and more particularly to apparatus and methods for addressing mitral regurgitation.
  • BACKGROUND OF THE INVENTION
  • [0003]
    Mitral valve repair is the procedure of choice to correct mitral regurgitation of all etiologies. With the use of current surgical techniques, between 70% and 95% of regurgitant mitral valves can be repaired. The advantages of mitral valve repair over mitral valve replacement are well documented. These include better preservation of cardiac function and reduced risk of anticoagulant-related hemorrhage, thromboembolism and endocarditis.
  • [0004]
    Degenerative mitral valve disease most commonly affects the chordae of the posterior leaflet, causing posterior leaflet prolapse. Traditional repair techniques for such lesions include leaflet resection and annular plication.
  • SUMMARY OF THE INVENTION
  • [0005]
    One object of the present invention is to provide novel apparatus and method for the repair of heart valves so as to increase their efficiency.
  • [0006]
    Another object of the present invention is to provide novel apparatus and method for the repair of mitral valves so as to reduce mitral regurgitation.
  • [0007]
    And another object of the present invention to provide novel apparatus and method to correct mitral valve regurgitation caused by mitral valve leaflet prolapse or posterior annulus dilation.
  • [0008]
    These and other objects are addressed by the provision and use of the present invention, which comprises a shaped sheet of material affixed to the annulus of the valve and extending over at least one leaflet of the valve so as to assist or replace the closing function of that valve leaflet. The device may be used for mitral valve repair or for other valve repair, on a beating heart or on an arrested heart.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0009]
    These and other objects and features of the present invention will be more fully disclosed or rendered obvious by the following detailed description of the preferred embodiments of the invention, which is to be considered together with the accompanying drawings wherein like numbers refer to like parts and further wherein:
  • [0010]
    FIG. 1 is a schematic view showing a normal mitral valve in its closed position;
  • [0011]
    FIG. 2 is a schematic view showing a regurgitant mitral valve in its closed position, with its posterior leaflet in a prolapsed condition;
  • [0012]
    FIG. 3 is a schematic view showing a mitral 5 shield affixed to the periphery of the regurgitant mitral valve of FIG. 2 so as to prevent prolapse of the posterior leaflet and thereby ameliorate mitral regurgitation;
  • [0013]
    FIG. 4 is a schematic view showing an alternative form of mitral shield formed in accordance with the present invention;
  • [0014]
    FIG. 5 is a schematic view showing another alternative form of mitral shield formed in accordance with the present invention;
  • [0015]
    FIG. 6 is a schematic view showing still another form of mitral shield also formed in accordance with the present invention;
  • [0016]
    FIG. 7 is a schematic view showing yet another form of mitral shield formed in accordance with the present invention;
  • [0017]
    FIG. 8 is a schematic view showing another alternative form of mitral shield formed in accordance with the present invention;
  • [0018]
    FIG. 9 is a schematic view showing still another alternative form of mitral shield formed in accordance with the present invention; and
  • [0019]
    FIG. 10 is a schematic view showing yet another alternative form of mitral shield formed in accordance with the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0020]
    Looking first at FIG. 1, there is shown a normal mitral valve V. Mitral valve V is shown in its closed position, with its posterior leaflet PL and its anterior leaflet AL properly engaging one another. Also shown is the valve's posterior annulus PA and its anterior annulus AA.
  • [0021]
    Looking next at FIG. 2, there is shown a regurgitant mitral valve RV. Regurgitant mitral valve RV is shown in its closed position, with posterior leaflet PL in a prolapsed condition and failing to properly engage anterior leaflet AL, thus leaving a regurgitant orifice RO therebetween.
  • [0022]
    Looking next at FIG. 3, a mitral shield 5 is shown affixed to the posterior annulus PA of the valve RV so as to prevent prolapse of the posterior leaflet PL and thereby ameliorate mitral regurgitation.
  • [0023]
    More particularly, mitral shield 5 comprises a shaped sheet of material which is sized to the circumference of the mitral annulus. This sheet may be uniform in thickness or specifically shaped to match the surface of the mitral valve. When affixed to the valve annulus, the sheet will project over a portion of the orifice of the mitral valve. In most cases, the sheet will be oriented over the posterior leaflet PL, such as is shown in FIG. 3, thereby providing an area of contact for the anterior mitral leaflet AL and reducing or eliminating regurgitation due to leaflet prolapse by the posterior leaflet PL.
  • [0024]
    A perforated shield over the affected leaflet will be sufficient to prevent leaflet prolapse while maintaining adequate blood flow. Thus, in FIG. 1, a plurality of radially elongated perforations 10 are provided in mitral shield 5. Alternatively, circular perforations, such as the circular perforations 10 provided in the mitral shield 5 shown in FIG. 2, may also be provided. Still other perforation configurations, in both shape and number, will be apparent to those skilled in the art in view of the present disclosure.
  • [0025]
    The mitral shield may be constructed of biological material (e.g., human or bovine pericardium) or non-biological material (e.g., Dacron, PTFE, a biocompatible plastic, a biocompatible metal such as titanium, nitinol wire, etc). It may also consist of autologous cells grown on a matrix or frame. The sheet may be attached to the annulus using sutures, staples, wire, medical grade adhesives or other means of fixation. Thus, for example, in FIG. 1 staples 15 are shown attaching shield 5 to the annulus of the valve.
  • [0026]
    If the posterior annulus is dilated, a solid portion of a shield will fill the void and provide a contact surface for the anterior leaflet. Thus, for example, in FIG. 5 there is shown a mitral shield 105 which is substantially solid. In FIG. 6, there is shown a mitral shield 105 which is solid except for pre-formed suture holes 120. In FIG. 7 there is shown a mitral shield 105 which is solid and includes integral fixation staples 125.
  • [0027]
    It should be appreciated that the native posterior valve leaflet may either be excised or left in situ when the mitral shield 105 is employed.
  • [0028]
    Looking next at FIG. 8, there is shown a solid crescent shield 205 which is configured to correct posterior leaflet flail, and which is also provided with a mid-line projection 230 to support the anterior leaflet AL from prolapsing.
  • [0029]
    In FIG. 9, there is shown a wire frame shield 305 for addressing posterior and/or anterior leaflet prolapse only.
  • [0030]
    And in FIG. 10, there is shown a mitral shield 405 combining a solid shield portion and perforations 410 and integral staples 425 around the entire annulus circumference.
  • [0031]
    Alternative designs of the same invention allow for correcting one or both leaflets while maintaining adequate blood flow. The shield may also be used in conjunction with other mitral valve repair techniques and devices.
  • [0032]
    Although the device described is intended primarily for mitral valve repair, it is also contemplated that the same or substantially similar apparatus and methodology may be used in repairing other cardiac valves, including the tricuspid, pulmonary and aortic valves.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US4042979 *12 Jul 197623 Ago 1977Angell William WValvuloplasty ring and prosthetic method
US4096552 *2 Dic 197520 Jun 1978Ben Porat JosefElectric jewels
US4489446 *14 Jul 198225 Dic 1984Reed Charles CHeart valve prosthesis
US4917698 *22 Dic 198817 Abr 1990Baxter International Inc.Multi-segmented annuloplasty ring prosthesis
US5041130 *30 Nov 198920 Ago 1991Baxter International Inc.Flexible annuloplasty ring and holder
US5061277 *2 Sep 198829 Oct 1991Baxter International Inc.Flexible cardiac valvular support prosthesis
US5201880 *27 Ene 199213 Abr 1993Pioneering Technologies, Inc.Mitral and tricuspid annuloplasty rings
US5360444 *9 Dic 19931 Nov 1994Kenji KusuharaOccluder supporter and a method of attachment thereof
US5709695 *29 Ago 199620 Ene 1998Segmed, Inc.Apparatus for reducing the circumference of a vascular structure
US5946943 *16 Jul 19977 Sep 1999Hanson; Carl RalphBody piercing jewelry
US6406420 *21 Oct 199918 Jun 2002Myocor, Inc.Methods and devices for improving cardiac function in hearts
US6419695 *22 May 200016 Jul 2002Shlomo GabbayCardiac prosthesis for helping improve operation of a heart valve
US6524338 *25 Ago 200025 Feb 2003Steven R. GundryMethod and apparatus for stapling an annuloplasty band in-situ
US6702826 *22 Jun 20019 Mar 2004Viacor, Inc.Automated annular plication for mitral valve repair
US20020029080 *19 Oct 20017 Mar 2002Myocor, Inc.Valve to myocardium tension members device and method
US20030120340 *26 Dic 200126 Jun 2003Jan LiskaMitral and tricuspid valve repair
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US76662247 Jul 200523 Feb 2010Edwards Lifesciences LlcDevices and methods for heart valve treatment
US76781451 Jul 200516 Mar 2010Edwards Lifesciences LlcDevices and methods for heart valve treatment
US788353923 Abr 20028 Feb 2011Edwards Lifesciences LlcHeart wall tension reduction apparatus and method
US8052751 *2 Jul 20048 Nov 2011Flexcor, Inc.Annuloplasty rings for repairing cardiac valves
US807080525 Ene 20106 Dic 2011Edwards Lifesciences LlcDevices and methods for heart valve treatment
US821630319 Nov 200810 Jul 2012The Cleveland Clinic FoundationApparatus and method for treating a regurgitant heart valve
US826272516 Abr 200811 Sep 2012Cardiovascular Technologies, LlcTransvalvular intraannular band for valve repair
US82678528 Jul 201018 Sep 2012Edwards Lifesciences, LlcHeart wall tension reduction apparatus and method
US846017311 Sep 201211 Jun 2013Edwards Lifesciences, LlcHeart wall tension reduction apparatus and method
US848073225 Nov 20099 Jul 2013Heart Repair Technologies, Inc.Transvalvular intraannular band for valve repair
US85066242 Dic 201113 Ago 2013Edwards Lifesciences, LlcDevices and methods for heart valve treatment
US87844834 Ene 201222 Jul 2014The Cleveland Clinic FoundationApparatus and method for treating a regurgitant heart valve
US895640628 Sep 201217 Feb 2015Heart Repair Technologies, Inc.Transvalvular intraanular band and chordae cutting for ischemic and dilated cardiomyopathy
US896159712 Oct 201224 Feb 2015Heart Repair Technologies, Inc.Percutaneous transvalvular intraannular band for mitral valve repair
US916813717 Oct 201227 Oct 2015Heart Repair Technologies, Inc.Transvalvular intraannular band for aortic valve repair
US919875620 May 20121 Dic 2015Pavilion Medical Innovations, LlcTissue restraining devices and methods of use
US91987577 Jul 20091 Dic 2015Edwards Lifesciences, LlcMethods and devices for improving mitral valve function
US928929518 Nov 201122 Mar 2016Pavilion Medical Innovations, LlcTissue restraining devices and methods of use
US946852620 Feb 201518 Oct 2016Heart Repair Technologies, Inc.Percutaneous transvalvular intraannular band for mitral valve repair
US955490627 Oct 201531 Ene 2017Pavillion Medical Innovations, LLCTissue restraining devices and methods of use
US958575321 Oct 20157 Mar 2017Heart Repair Technologies, Inc.Transvalvular intraannular band for valve repair
US961592513 Feb 201511 Abr 2017Heart Repair Technologies, Inc.Transvalvular intraanular band for ischemic and dilated cardiomyopathy
US20050004665 *2 Jul 20036 Ene 2005Lishan AklogAnnuloplasty rings and methods for repairing cardiac valves
US20050004668 *2 Jul 20046 Ene 2005Flexcor, Inc.Annuloplasty rings and methods for repairing cardiac valves
US20050159810 *15 Ene 200421 Jul 2005Farzan FilsoufiDevices and methods for repairing cardiac valves
US20080319541 *17 Jun 200825 Dic 2008Mount Sinai School Of Medicine Of New York UniversityDevices and methods for repairing cardiac valves
US20090132036 *19 Nov 200821 May 2009The Cleveland Clinic FoundationApparatus and method for treating a regurgitant heart valve
US20090264995 *16 Abr 200822 Oct 2009Subramanian Valavanur ATransvalvular intraannular band for valve repair
US20100076550 *25 Nov 200925 Mar 2010Cardiovascular Technologies, LlcTransvalvular intraannular band for valve repair
US20100121435 *14 Oct 200913 May 2010Cardiovascular Technologies, LlcPercutaneous transvalvular intrannular band for mitral valve repair
US20100121437 *14 Oct 200913 May 2010Cardiovascular Technologies, LlcTransvalvular intraannular band and chordae cutting for ischemic and dilated cardiomyopathy
US20100131057 *14 Oct 200927 May 2010Cardiovascular Technologies, LlcTransvalvular intraannular band for aortic valve repair
WO2008089044A2 *10 Ene 200824 Jul 2008The Trustees Of Columbia UniversityMitral valve repair device
WO2008089044A3 *10 Ene 200824 Dic 2008Univ ColumbiaMitral valve repair device
Clasificaciones
Clasificación de EE.UU.600/37, 623/2.36
Clasificación internacionalA61F2/02, A61F2/24
Clasificación cooperativaA61F2/2454, A61F2/2445
Clasificación europeaA61F2/24R6, A61F2/24R2