Umbrella shaped suture anchor device with actuating ring member

Abstract

A suture anchor device having an anchor member with outwardly extending wing members and an actuating wedge member. The suture anchor device is inserted into a bore hole in a bone as part of an orthopedic surgical procedure wherein soft tissue such as a tendon or ligament is attached to the surface of the bone. The wing members are spread outwardly by the wedge member to lock the suture anchor device in the bone. The suture anchor has similar utility in soft tissue applications.

What is claimed is: 
     
       1. A suture anchor assembly, comprising an elongated anchor member having a distal end and a proximal end,   a shaft extending proximally away from said anchor member proximal end, and   a plurality of wing members extending proximally and radially outward from said anchor member proximal end . .and.!..Iadd., each of said wing members .Iaddend.terminating in a free end, said wing members being spaced from said shaft;     an operating member slidably mounted on said shaft for sliding movement relative to said anchor member from a first normal position remote from said . .anchor member.!. .Iadd.wing members .Iaddend.to an operative position in which said operating member is lodged between said shaft and said wing members to thereby restrain said wing members from moving inwardly toward said shaft from . .the.!. .Iadd.a .Iaddend.radially outward . .extending.!. position; and   .Iadd.wherein said elongated anchor member has a passage for receiving the .Iaddend.suture . .retaining means in said shaft.!..   
     
     
       2. The assembly of claim 1, wherein said operating member is a sleeve. 
     
     
       3. The assembly according to claim 2, wherein said sleeve has opposed proximal and distal ends, said sleeve having a wedge-shaped distal portion that tapers inwardly toward said sleeve distal end. 
     
     
       4. The assembly according to claim 3, wherein said . .suture retaining means comprises.!. .Iadd.sleeve has .Iaddend.two slots . .in said cylinder, with each slot.!. extending from the distal to proximal ends of said . .operating member.!. .Iadd.sleeve.Iaddend., and wherein each of said slots overlies an aperture in said shaft, through which the suture is adapted to extend. 
     
     
       5. The assembly according to claim 2, wherein said sleeve and said shaft have cooperating locking means for locking said sleeve to said shaft when said sleeve is in said normal position. 
     
     
       6. The assembly accordingly to claim 5, wherein said sleeve and said shaft have cooperating locking means for locking said sleeve to said shaft when said sleeve is in said operative position, whereby said wing members are prevented by said locked sleeve from deflecting inwardly from said outward position. 
     
     
       7. The assembly according to claim 2, wherein said sleeve and said shaft have cooperating locking means for locking said sleeve to said shaft when said sleeve is in said operative position, whereby said wing members are prevented by said locked sleeve from deflecting inwardly from said outward position. 
     
     
       8. The assembly according to claim 2, wherein said anchor member and said sleeve each comprises a bioabsorbable material. 
     
     
       9. The assembly according to claim 8, wherein the bioabsorbable material comprises a member selected from the group consisting of homopolymers and copolymers of lactide, glycolide, trimethylene carbonate, caprolactone, and p-dioxanone and blends thereof. 
     
     
       10. The assembly according to claim 2, wherein said anchor member and said sleeve each comprises a biocompatible nonabsorbable material. 
     
     
       11. The assembly according to claim 10, wherein the nonabsorbable material comprises a member selected from the group consisting of polyesters, polyamides. polyolefins, polyurethanes, and polyacetals. . .12. The assembly according to claim 2, wherein said sleeve is lodged between said shaft and said wing members to thereby further extend and hold said wing 
     
     
        members in a radially outward further extending position..!.13. The assembly according to claim 1, wherein said anchor member is adapted for anchoring in a bone and wherein said anchor member comprises means to promote bone growth, whereby bonding of the anchor member to the bone is 
     
     
        increased thereby. 14. The assembly according to claim 13, wherein said means to promote bone growth comprises a microporous surface of said 
     
     
        anchor member which is in contact with said bone. 15. The assembly according to claim 14, wherein said anchor member is comprised of titanium 
     
     
        or titanium alloy. 16. The assembly according to claim 13, wherein the 
     
     
        anchor member comprises bone growth factors. 17. The assembly according to claim 1, wherein said shaft terminates in a proximal end remote from said anchor member, said shaft proximal end having a socket therein for 
     
     
        receiving a rod. 18. The assembly according to claim 1, further comprising a surgical suture mounted in the . .suture retaining means.!. 
     
     
        .Iadd.passage for receiving the suture.Iaddend.. 19. The assembly according to claim 1, wherein said . .suture retaining means.!. .Iadd.passage for receiving the suture .Iaddend.is adjacent to the 
     
     
        proximal end of said shaft. 20. The assembly according to claim 19, wherein said . .suture retaining means.!. .Iadd.passage for receiving the 
     
     
        suture .Iaddend.comprises a hole through said shaft. 21. The assembly according to claim 1, wherein said shaft comprises a proximally extending breakaway portion thereof, wherein said breakaway portion is adapted to facilitate placement of said device in a bone or soft tissue and, after 
     
     
        such placement, is adapted to be broken from the shaft and removed. 22. The assembly according to claim 1, wherein said shaft terminates in a proximal end remote from said anchor member, said shaft proximal end being 
     
     
        adapted for engagement with a removable clamping member. 23. The assembly according to claim 1, wherein the anchor member is adapted for anchoring in a bone and wherein a surface of the anchor member, in contact with the bone, is coated with a substance to promote adhesion thereof to the bone. 
     
     
         4. The assembly according to claim 1, wherein said operating member is a 
     
     
        ring. 25. The assembly according to claim 1, wherein the anchor member comprises means for anchoring in soft tissue for repair of soft tissue. 
     
     
            A method of implanting a suture anchor assembly in a bone, comprising: I) inserting a suture anchor assembly in a bore hole drilled in a bone, wherein the suture anchor assembly comprises an elongated anchor member having a distal end and a proximal end, a shaft extending proximally away from said anchor member proximal end, and a plurality of wing members extending proximally and radially outward from said anchor member proximal end . .and.!..Iadd., each of said wing members .Iaddend.terminating in a free end, said wing members being spaced from said shaft; an operating member slidably mounted on said shaft for sliding movement relative to said anchor member from a first normal position remote from said . .anchor member.!. .Iadd.wing members .Iaddend.to an operative position in which said operating member is lodged between said shaft and said wing members to thereby restrain said wing members from moving inwardly toward said shaft from . .the.!. .Iadd.a .Iaddend.radially outward . .extending.!. position; and . .suture retaining means in said shaft.!. .Iadd.said elongated anchor member has a passage for receiving the suture.Iaddend., and   II) sliding said operating member of said suture anchor assembly relative to said anchor member thereof from said first position to said operative position. .Iadd.27. The assembly according to claim 1, wherein said radially outward position of said wing members corresponds to a normal resting position of said wing members. .Iaddend..Iadd.28. The assembly according to claim 1, wherein said radially outward position of said wing members corresponds to an overextended position of said wing members. .Iaddend..Iadd.29. The assembly according to claim 1, wherein said passage for receiving the suture is formed from a recess in said shaft.   
     
     
        .Iaddend..Iadd.30.  The assembly according to claim 1, wherein said shaft has an axis alone which said shaft is elongated, and said recess is aligned along said axis. .Iaddend..Iadd.31. The method of claim 26, wherein said bore hole has a diameter that is greater than a largest outside diameter of the suture anchor assembly. .Iaddend..Iadd.32. The method of claim 26, wherein said bore hole has a diameter that is smaller than a largest outside diameter of the suture anchor member. .Iaddend..Iadd.33. The method of claim 26, wherein said bore hole has a diameter equal to a largest outside diameter of the suture anchor member. .Iaddend..Iadd.34. The method of claim 26, wherein said passage for receiving the suture is formed from a recess in said shaft. .Iaddend..Iadd.35. The method of claim 34, wherein said shaft has an axis along which said shaft is elongated, and said recess is aligned along said axis. .Iaddend..Iadd.36. An assembly for anchoring a suture, comprising an elongated anchor member for receiving the suture, said elongated anchor member having a distal end and a proximal end,   a shaft extending proximally away from said anchor member proximal end, and   a plurality of wing members extending proximally and radially outward from said anchor member proximal end, each of said wing members terminating in a free end, said wing members being spaced from said shaft; and     an operating member slidably mounted on said shaft for sliding movement relative to said anchor member from a first normal position remote from said wing members to an operative position in which said operating member is lodged between said shaft and said wing members to thereby restrain said wing members from moving inwardly toward said shaft from a radially   
     
     
        outward position. .Iaddend..Iadd.37.  The assembly according to claim 36, wherein said radially outward position of said wing members corresponds to a normal resting position of said wing members. .Iaddend..Iadd.38. The assembly according to claim 36, wherein said radially outward position of said wing members corresponds to an overextended position of said wing members. .Iaddend.