US20140142689A1 - Device and method of treating heart valve malfunction - Google Patents

Device and method of treating heart valve malfunction Download PDF

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Publication number
US20140142689A1
US20140142689A1 US13/691,087 US201213691087A US2014142689A1 US 20140142689 A1 US20140142689 A1 US 20140142689A1 US 201213691087 A US201213691087 A US 201213691087A US 2014142689 A1 US2014142689 A1 US 2014142689A1
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United States
Prior art keywords
chord
valve leaflet
heart
recited
anchor
Prior art date
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Abandoned
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US13/691,087
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English (en)
Inventor
Didier De Canniere
Christophe Moureaux
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Corquest Medical Inc
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Individual
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Filing date
Publication date
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Priority to US13/691,087 priority Critical patent/US20140142689A1/en
Assigned to CORQUEST MEDICAL, INC. reassignment CORQUEST MEDICAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DE CANNIERE, Didier, MOUREAUX, CHRISTOPHE
Priority to US13/967,647 priority patent/US10159571B2/en
Priority to JP2015544111A priority patent/JP2015535465A/ja
Priority to AU2013348100A priority patent/AU2013348100C1/en
Priority to PCT/US2013/070972 priority patent/WO2014081809A2/fr
Priority to CA2891356A priority patent/CA2891356A1/fr
Priority to EP13856513.0A priority patent/EP2922502B1/fr
Publication of US20140142689A1 publication Critical patent/US20140142689A1/en
Priority to IL238933A priority patent/IL238933A0/en
Priority to JP2018005752A priority patent/JP2018061855A/ja
Abandoned legal-status Critical Current

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    • 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
    • A61F2/2466—Delivery devices therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • A61B17/0643—Surgical staples, i.e. penetrating the tissue with separate closing member, e.g. for interlocking with staple
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • 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
    • A61F2/2454—Means for preventing inversion of the valve leaflets, e.g. chordae tendineae prostheses
    • A61F2/2457—Chordae tendineae prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0482—Needle or suture guides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0409—Instruments for applying suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0427—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having anchoring barbs or pins extending outwardly from the anchor body
    • A61B2017/0437—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having anchoring barbs or pins extending outwardly from the anchor body the barbs being resilient or spring-like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0446—Means for attaching and blocking the suture in the suture anchor
    • A61B2017/0448—Additional elements on or within the anchor
    • A61B2017/045—Additional elements on or within the anchor snug fit within the anchor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0464—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors for soft tissue

Definitions

  • the present invention is directed to an instrument assembly and method of use and application in the treatment of heart valve malfunction.
  • the instrument assembly is specifically adapted to treat mitral regurgitation by means of a direct entry of the instrument through the atrial wall rather than through the vascular system, in order to apply sufficient tension to a prolapsing leaflet, including the anterior leaflet and/or the posterior leaflet of the mitral valve, in order to overcome mitral regurgitation.
  • the human heart is a four chambered pump that moves blood efficiently through the vascular system.
  • blood enters the heart through the vena cava and flows into the right atrium. Thereafter, blood flows from the right atrium through the tricuspid valve and into the right ventricle.
  • blood is forced through the pulmonic valve and into the lungs for oxygenation.
  • the oxygenated blood returns from the lungs and enters the heart through the left atrium and passes through the mitral valve into the left ventricle.
  • the blood therein flows through the aortic valve and into the aorta and throughout the vascular system.
  • the mitral valve is disposed in flow regulating communication between the left atrium and the left ventricle. It is composed of two valve leaflets, the mitral valve annulus, which forms a ring that supports the valve leaflets; papillary muscles, which tether the valve leaflets to the left ventricle wall, by preventing them from prolapsing back into the left atrium. Chordae tendineae serve to connect the mitral valve leaflets to the papillary muscles thereby further preventing the leaflets from prolapsing back into the left atrium. A dysfunction of any of these components of the mitral valve can cause “mitral regurgitation”. Mitral regurgitation is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood.
  • mitral regurgitation is the second most common form of valvular heart disease.
  • the anterior and posterior valve leaflets of the mitral valve overlap during contraction of the left ventricle and prevent blood from flowing back into the left atrium.
  • This overlap of the 2 leaflets leaning upon each other is called the coaptation and absorbs most of the strain on the mitral apparatus during the ventricular contraction.
  • the mitral valve malfunctions, due to various cardiac diseases, the leaflets are no longer coapting resulting in the mitral valve remaining partially open during ventricular contraction. In turn this allows the “regurgitation” of the blood back into the left atrium, as generally set forth above.
  • Methods of treating conditions relating to the malfunctioning of the heart valve specifically including valve incompetencies, mitral valve leakage and other heart failure conditions may be in various stages of development such as the extending of an elongate member transverse across a corresponding or affected heart chamber.
  • Each end of the elongate member extends through a wall of the heart such as the septum wall and an oppositely disposed wall portion, wherein first and second anchoring members are connected to corresponding ends of the elongate member but are disposed external of the heart chamber.
  • Connecting clips or the like are applied to the corresponding exterior ends of the elongate member, resulting in the papillary muscles within the chamber to be effectively repositioned.
  • a predetermined force is applied to the heart itself and/or the affected portions of the heart chamber.
  • mitral regurgitation sometimes may include the replacement of the mitral valve, resulting in traumatic and frequently dangerous surgical procedures being performed on a patient.
  • the present invention is directed to an instrument assembly and attendant method for treating heart valve malfunction.
  • the instrumentation and method are specifically, but not exclusively, adapted for the treatment of mitral regurgitation.
  • the subject instrument assembly and method will be described generically regarding treatment of a predetermined heart valve.
  • the present invention will be more specifically described in regard to a procedure involving correction of a prolapsing mitral valve leaflet, which may include the anterior mitral valve leaflet and/or the posterior valve leaflet correcting of mitral regurgitation.
  • the instrument assembly of the present invention includes an introductory sheath formed of a material of sufficient rigidity to facilitate the penetration and passage through various portions of the heart and mitral valve.
  • the introductory sheath may be said to be formed of at least a “semi-rigid” material.
  • this term is to be understood to include material having sufficient flexibility to be manipulated or “steered” through and/or along a predetermined path during the delivery of the sheath and associated components of the instrument assembly to predetermined portions of the heart.
  • the sheath will be sufficiently maneuverable to pass through the atrial wall into interior portions of the heart such as the left atrium and left ventricle.
  • an introduction assembly and a delivery catheter will be used to facilitate the positioning the introductory sheath into the thoracic cavity and through the atrial wall or other preferred exterior locations of the heart wall.
  • Additional structural operative features of the instrument assembly include the provision and utilization of at least one, or under required circumstances, more than one elongated chord formed of a biocompatible material and being at least partially flexible.
  • the material from which the chord is formed should have sufficient and/or predetermined tensile strength to exert a predetermined tension on the predetermined, prolapsing valve leaflet as the chord extends between a corresponding portion of the heart wall, such as the ventricular wall, as also more fully described hereinafter.
  • the chord is initially housed concentrically within the interior of the introductory sheath, wherein the sheath and the chord are concurrently movable relative to the heart as well as throughout a portion of the interior thereof.
  • the introductory sheath is formed of a material having physical characteristics that allow it to be accurately manipulated so as to be steerable in such a manner that its tip can aim towards the different designated portions of the anterior or posterior mitral valve leaflets that are in the siege of the prolapse.
  • the exteriorly concentric introductory sheath is movable relative to and along the length of the chord so as to accommodate proper and intended placement and anchoring of the chord within the heart chamber. Therefore, the sheath is movable with the chord into and through predetermined portions of the heart chamber and movable relative to the chord after proper anchoring, securing and/or intended placement of the chord within the heart chamber.
  • the instrument assembly of the present invention also includes an anchor secured to an outer or distal end of the chord.
  • the anchor may also be sufficiently sharpened, pointed or otherwise configured to penetrate an intended heart valve leaflet, such as a prolapsing leaflet of the mitral valve. Further, the penetration and passage of the anchor, the chord, and the introductory sheath substantially through the predetermined valve leaflet may thereby be facilitated.
  • the anchor When properly positioned, the anchor is structured to be secured to a substantially opposing portion of the heart wall, such as the ventricular wall associated with the left ventricle and/or the papillary muscles associated therewith.
  • a gripping structure may be operatively attached to a remainder of the anchor and disposable into an outwardly and/or radially extending orientation. When so disposed, the gripping structure, in combination with the remainder of the anchor, eliminates or significantly restricts the inadvertent detachment of the anchor, and the distal end of the chord attached thereto, from the corresponding ventricular wall portion.
  • the anchor and the gripping structure are disposed and applied so as to penetrate the corresponding portion of the ventricular wall but not extend there through. Therefore, the anchored relation of the gripping structure, anchor and the connected distal end of the chord may be defined by a penetration into the interior of the ventricular wall rather than a passage completely there through. Complications associated with sealing and exterior attachment of the chord to the exterior of the ventricular wall are thereby eliminated.
  • the present invention further comprises a method of treating heart and valve malfunction utilizing the instrument as generally set forth above.
  • the attendant method comprises, at least in more generic terms, the passing of a portion of the instrument assembly into an intended heart chamber and into penetrating relation to a predetermined valve leaflet, such as a prolapsing leaflet.
  • a predetermined valve leaflet such as a prolapsing leaflet.
  • the sheath, with the chord concentrically disposed on the interior thereof, is passed through the predetermined valve leaflet. Therefore, by virtue of the enclosed disposition of the chord, the chord and sheath will concurrently enter and extend through the predetermined valve leaflet.
  • the sheath and the chord will extend across a corresponding heart chamber and into an anchored relation with a substantially opposing portion of the heart wall.
  • the sheath is withdrawn from heart chamber in which the chord is anchored. More specifically, the sheath is withdrawn by moving relative to and back along the length of the anchored chord in a direction away from the anchor and connected distal end of the chord. The introductory sheath is further withdrawn back through the predetermined valve leaflet while the proximal portion of the chord remains within the valve leaflet.
  • a securing assembly is operatively disposed within the heart chamber in interconnecting relation between a proximal extremity of the chord and the predetermined valve leaflet.
  • the securing assembly may include a securing member, which will be mounted on or connected to a proximal portion of the chord and moved along the length thereof into a predetermined, interconnecting position relative to the prolapsing valve leaflet.
  • the position of the securing member will be tailored to and disposed at the exact position needed to achieve correction of the mitral regurgitation, which may be determined by preoperative transoesopageal echography or other preoperative manner, to quantify the occurring mitral regurgitation preoperatively.
  • the securing member then securely interconnects the proximal extremity of the chord to the predetermined valve leaflet and any excess length of the chord will be severed or detached from the proximal extremity of the chord, which is secured to the surface of the leaflet associated with the atrium.
  • the chord is thereby properly tensioned between the opposing, interior corresponding wall portion of the heart and the predetermined valve leaflet so as to overcome the malfunction of the predetermined valve leaflet as explained in more specific details hereinafter.
  • the instrument assembly and attendant method of the present invention is specifically adapted for the treatment of mitral regurgitation.
  • the introductory sheath and the chord substantially concurrently enter the atrial wall of the left atrium and pass into the interior thereof. Further, the sheath and the chord penetrate and are passed, substantially concurrently, through a prolapsing (flail) anterior or posterior leaflet of the mitral valve into the left ventricle of the heart chamber. Thereafter the sheath and chord are concurrently extended transversely across the left ventricle, wherein the anchor penetrates and is thereby secured in an anchored relation with a substantially opposing portion of the ventricular wall and/or corresponding papillary muscles. The distal end of the chord is connected to the anchor and is thereby secured in an anchored relation to the ventricular wall, by virtue of the penetrating anchor.
  • the sheath is withdrawn back along the length of the chord, away from the anchor and the ventricular wall to which the distal portion of the chord is secured. Moreover, the introductory sheath continues to travel back along the length of the chord through the prolapsing anterior or posterior mitral valve leaflet to a location at least exterior to the leaflet, such as within the left atrium and possibly exteriorly of the heart itself.
  • a securing assembly is then operatively associated with the instrument and is movably disposed along the length of a proximal portion of the chord.
  • the movement of the securing assembly and its associated securing member are disposed into an interconnecting position between a proximal extremity of the chord and the mitral valve leaflet penetrated by the chord.
  • proper tensioning is thereby placed on the prolapsing mitral valve leaflet in order to restore a sufficient surface of coaptation between its counterpart, opposing leaflet and maintain the suppressed leaflet in an operative position sufficient to overcome the mitral regurgitation.
  • FIG. 1 is a perspective view of one preferred embodiment of the instrument assembly of the present invention used in the treatment of heart valve malfunction.
  • FIG. 1A is a perspective view of the instrument assembly of the embodiment of FIG. 1 in an initially introductory position.
  • FIGS. 2 through 9 are schematic representations of successive steps in the attendant method of utilizing and applying the instrument assembly of the embodiment of FIGS. 1 and 1A specifically for the treatment and correction of mitral regurgitation.
  • the instrument assembly of the present invention is schematically and generally indicated as 10 and is used for the treatment of heart valve malfunction generally and more specifically for the treatment of mitral regurgitation.
  • the instrument assembly 10 includes an elongated delivery catheter or tube 12 having a hollow interior and structured to deliver operative portions of the instrument assembly 10 to the treatment site within the heart of a patient.
  • the elongated delivery catheter or tube 12 is dimensioned and configured to enter the chest cavity through appropriate introduction instrumentation.
  • the delivery tube 12 is formed of a material and/or includes positioning structure or linkage incorporated therein which facilitates the maneuvering or steering thereof to a point at least generally exterior the heart and more specifically the atrial wall of the left atrium.
  • the at least semi-rigid material of the delivery tube 12 should be sufficient to also facilitate proper manipulation so as to position or “steer” the remainder of the instrument assembly 10 to the intended location within the interior thereof, as well as facilitate penetration of and anchoring to intended tissue portions.
  • the instrument assembly 10 also includes an introductory sheath 14 movable within the delivery tube 12 and an elongated flexible material chord 16 .
  • the introductory sheath 14 is concentrically and movably enclosed within the delivery tube 12 and the sheath 14 is movably disposed concentrically about the chord 16 .
  • FIG. 1 represents a completely assembled instrument assembly 10 .
  • the various portions of the instrument assembly 10 are used in successive steps to accomplish installation relative to the affected portions of the heart valve being treated.
  • the instrument assembly 10 further includes the elongated flexible material chord 16 which may be formed of a synthetic, biocompatible material.
  • An anchor 18 is fixedly secured to the outer or distal end of the chord 16 and is movable therewith relative to the introductory sheath 14 .
  • chord 16 is at least initially enclosed concentrically within the interior of the introductory sheath 14 , wherein the sheath 14 is movable along the length of the chord 16 .
  • the sheath includes an open distal end 14 ′ serving to at least partially encloses or be registered alignment with the anchor 18 . Therefore, FIG. 1A represents cooperative portions of the instrument assembly 10 at least upon initial entry of the introductory sheath 14 and anchor 18 into the interior of the heart 30 , as specifically described in detail in FIGS. 2 through 9 , hereinafter described.
  • the positioning of the anchor 18 , the introductory sheath 14 and the chord 16 is such that the chord 16 is disposed within the interior of the introductory sheath 14 .
  • the anchor 18 is disposed at least partially within and/or in an exposed relation to the open distal end 14 ′ of the sheath 14 .
  • the anchor 18 has a sharpened, pointed or other appropriate configuration for penetrating portions of the heart.
  • the anchor 18 may also include a gripping structure 20 which may be initially disposed in a collapsed position when the anchor 18 is in registry with the distal opening 14 ′ of the sheath 14 .
  • the gripping structure 20 may include an inherent bias causing it to expand outwardly and/or radially from the remainder of the anchor 18 .
  • This gripping structure 20 is provided to facilitate a secure engagement of the anchor 18 with predetermined heart wall portions, when the instrument assembly 10 is properly applied in the treatment of the heart valve malfunction.
  • the assembled representation of the instrument assembly 10 further includes the provision of a securing member 22 which may travel along the length of the chord 16 .
  • the securing member may be forcibly positioned into an intended interconnecting location relative to a heart valve leaflet in order to accomplish a secure attachment of the chord 16 to the leaflet as will be explained in greater detail hereinafter.
  • Such an interconnecting placement of the securing member 22 relative to both the chord 16 and the affected valve leaflet serves to establish and maintain a sufficient tension and/or positioning force on the predetermined valve leaflet to suppress movement thereof, as explained hereinafter with regard to FIGS. 2 through 9 .
  • the heart is generally indicated as 30 and includes the representative portions including the left atrium 32 , the left ventricle 34 and the mitral valve 36 , including the anterior and posterior mitral valve leaflets 38 and 38 ′, respectively.
  • the left ventricle 34 is at least partially bordered or surrounded by ventricular wall 40 which may be directly associated with corresponding papillary muscles (not shown) facilitating the proper positioning of the mitral valve leaflets 38 and 38 ′ through organic tissue tethering, as generally outlined above.
  • FIGS. 2-9 schematically represent the instrument assembly 10 used on the anterior leaflet 38 of the mitral valve 30 in order to treat and correct mitral regurgitation.
  • the instrument assembly 10 and the attendant method of the present invention may be applied to an anterior and/or the posterior prolapsing leaflet in the manner described herein, in correcting a mitral regurgitation condition of the heart.
  • the various embodiments of the present invention are described using a single chord 16 , a plurality of chords 16 may be used with the cooperative instrument components of the instrument assembly 10 .
  • the instrument assembly 10 is introduced into the interior of the heart 30 and more specifically into the left atrium 32 , through the atrium wall 33 , using an appropriate introduction assembly 42 . Therefore, the introductory sheath 14 and the chord 16 located concentrically within the sheath 14 will concurrently pass through the atrial wall 33 of the heart into the left atrium 32 , as it is directed towards the anterior leaflet 38 of the mitral valve 36 .
  • the anchor 18 is at least initially in the position generally represented in FIG. 1A . Due to its predetermined configuration the anchor 18 will serve to approach and penetrate the anterior leaflet 38 of the mitral valve 36 as clearly represented in FIG. 3 .
  • the penetration of the anterior leaflet 38 initially by the anchor 18 will facilitate the penetration and passage, substantially concurrently, of the chord 16 and the introductory sheath 14 through the anterior leaflet 38 as schematically represented.
  • a continued force will be applied to the introductory sheath 14 causing the sheath 14 and interiorly disposed chord 16 , as well as the anchor 18 to continue concurrent passage through the anterior valve leaflet 38 until the anchor 18 reaches, penetrates and is secured to the ventricular wall 40 and/or correspondingly disposed papillary muscles associated therewith.
  • the distal end of the chord 16 will be affixed to the ventricular wall 40 and remain in place as the introductory sheath 14 is withdrawn back along the length of the chord 16 , as indicated by the directional arrows.
  • the aforementioned gripping structure 20 will have been expanded into a gripping orientation.
  • the anchor 18 and the distal end of the chord 16 connected thereto will be reliably anchored or connected to the ventricular wall 40 .
  • the securing assembly including securing member 22 , will move along the length of the chord 16 as it is introduced into the left atrium 32 such as through the atrium wall via, the introduction assembly 42 .
  • the securing member 22 will be forced, moved, positioned, etc. along the proximal portion or length 16 ′ of the chord 16 by any appropriate technique and/or appropriate positioning instrument/device, which may be incorporated or operatively associated with the chord 16 .
  • Positioning of the securing member 22 will continue until it is disposed in engaging, interconnecting and at least partially protective or sealing engagement with an exterior surface portion of the suppressed anterior mitral valve leaflet 38 located within the left atrium 32 .
  • the position of the securing member 22 will be disposed in the exact position, on and along the length of the chord 16 needed to position and or suppress movement of the leaflet 38 to achieve correction of the mitral regurgitation.
  • exact positioning may be determined by preoperative transoesopageal echography or other preoperative manner to quantify online mitral regurgitation preoperatively.
  • One embodiment may also include a guiding element or sleeve 25 , as represented in FIG. 1 .
  • the element 25 When utilized, the element 25 will be disposed at a predetermined position along the length on the artificial chord 16 and be mounted concentrically about and/or along a portion of the chord 16 .
  • the guiding element 25 may assume and or be at least partially defined by a variety of different structures, devices and/or mechanisms other than, but possibly including, the schematically represented sleeve.
  • the guiding element is operative to accurately center or otherwise dispose the securing member 22 in sealing and/or covering relation to the aperture or area where the chord 16 remains in its extended position through the anterior leaflet 38 .
  • the securing member 22 securely connects the proximal extremity 16 ′′ of the chord 16 to the valve leaflet 38 and any excess length of the proximal portion 16 ′ of the chord 16 will be severed or detached from the extremity 16 ′′ of the chord 16 and the securing member 22 , which interconnects the proximal extremity 16 ′′ to the “exterior” surface of the leaflet 38 exposed to the left atrium 32 .
  • manipulation of the instrument of the assembly 10 causes a severing of the proximal extremity from a remainder of the chord 16 .
  • the securing member 22 serves to securely connect and fasten the chord 16 to the exterior of the anterior leaflet 38 , disposed within the left atrium 32 .
  • the introductory sheath 14 passes back through the introduction assembly 42 so as to exit the left atrium 32 and the remainder of the heart. Thereafter, the introduction assembly 42 is also removed from its initial operative position.
  • the heart 30 is represented with the synthetic chord 16 properly anchored between the ventricular wall 40 and the penetrated anterior leaflet 38 .
  • proper tensioning or positioning forces are applied to the anterior leaflet 38 causing it to be positioned in a manner which effectively overcomes mitral regurgitation, as set forth above.

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  • Cardiology (AREA)
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  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
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US13/691,087 2012-11-21 2012-11-30 Device and method of treating heart valve malfunction Abandoned US20140142689A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US13/691,087 US20140142689A1 (en) 2012-11-21 2012-11-30 Device and method of treating heart valve malfunction
US13/967,647 US10159571B2 (en) 2012-11-21 2013-08-15 Device and method of treating heart valve malfunction
EP13856513.0A EP2922502B1 (fr) 2012-11-21 2013-11-20 Dispositif pour le traitement de dysfonctionnement de valvule cardiaque
PCT/US2013/070972 WO2014081809A2 (fr) 2012-11-21 2013-11-20 Dispositif et procédé de traitement de dysfonctionnement de valvule cardiaque
AU2013348100A AU2013348100C1 (en) 2012-11-21 2013-11-20 Device and method of treating heart valve malfunction
JP2015544111A JP2015535465A (ja) 2012-11-21 2013-11-20 心臓弁不全の治療器具および治療方法
CA2891356A CA2891356A1 (fr) 2012-11-21 2013-11-20 Dispositif et procede de traitement de dysfonctionnement de valvule cardiaque
IL238933A IL238933A0 (en) 2012-11-21 2015-05-20 Device and method for treating malfunction of a heart valve
JP2018005752A JP2018061855A (ja) 2012-11-21 2018-01-17 心臓弁不全の治療器具および治療方法

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JP2018061855A (ja) 2018-04-19
US20140142687A1 (en) 2014-05-22
CA2891356A1 (fr) 2014-05-30
AU2013348100C1 (en) 2018-06-07
WO2014081809A3 (fr) 2014-07-17
IL238933A0 (en) 2015-07-30
EP2922502A2 (fr) 2015-09-30
US10159571B2 (en) 2018-12-25
AU2013348100A1 (en) 2015-05-28
WO2014081809A2 (fr) 2014-05-30
EP2922502B1 (fr) 2018-04-25
AU2013348100B2 (en) 2018-05-17
JP2015535465A (ja) 2015-12-14
EP2922502A4 (fr) 2016-08-03

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