Suture anchor

• US 9,277,909 B2
• Filed: 10/27/2008
• Issued: 03/08/2016
• Est. Priority Date: 10/27/2007
• Status: Active Grant

• Current Assignee: Parcus Medical LLC
• Original Assignee: Parcus Medical LLC
• Inventors: Brunsvold, Mark D.
• Primary Examiner(s): Anderson, Gregory
• Assistant Examiner(s): LAUER, CHRISTINA C
• Application Number:
  US12/290,226
• Publication Number:
  US 20090149883A1
• Time in Patent Office: 2,689 Days
• Field of Search: 606/222, 606/223, 606/224, 606/225, 606/226, 606/227, 606/301, 606/72, 606/73, 606/75, 606/104, 606/139, 606/144, 606/232, 606/300, 606/304
• US Class Current: 1/1
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/0412 having anchoring barbs or pins extending outwardly from suture anchor body
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0441 the shaft being a rigid coil or spiral
• CPC Class Codes: A61B 2017/0445 cannulated, e.g. with a longitudinal through-hole for passage of an instrument
• CPC Class Codes: A61B 2017/0448 Additional elements on or within the anchor
• CPC Class Codes: A61B 2017/0459 Multiple holes in the anchor through which the suture extends and locking the suture when tension is applied

Abstract

An anchor device and system for coupling soft tissue to osseous tissue includes a stopper member that supports a loop of suture material. A fixing member includes features that allow it to be rigidly coupled to surrounding bone and thus hold the stopper member in a cavity within the bone. The loop of suture material, in turn, supports a second suture device, which is coupled to, and thus retains, the soft tissue. In certain embodiments, the stopper member includes a mechanical linkage for coupling it to the fixing member, and surface features that resist withdrawal of the fixing member from the bone.

Claims

1. An anchor comprising:

a stopper portion, said stopper portion including a first body, said first body including a first bone-interface surface having a first circumferential thread oriented in a first sense, said first body having first and second through-holes therein, said first and second through-holes being disposed in generally parallel spaced relation to one another and substantially parallel to a longitudinal axis of said anchor;

a fixing portion, said fixing portion including a second body, said second body including a second bone-interface surface having a second circumferential thread oriented in a second sense opposite said first sense, said second bone interface surface being adapted to interfere with a corresponding region of a patient'"'"'s bone so as to prevent a premature displacement of said fixing portion from an installed location with respect to said bone, said second body having at least a third through-hole, said third through hole being disposed generally parallel to said longitudinal axis of said anchor; and

a locking device, said locking device including a first feature of said first body and a second feature of said second body, said first and second features being adapted to present respective interfering surfaces to one another so as to limit a rotation of said stopper portion with respect to said fixing portion about said longitudinal axis of said anchor.

2. An anchor as defined in claim 1 wherein said first and second features comprise a projection and a recess respectively, said projection and recess including said interfering surfaces respectively, wherein said interfering surfaces each includes a generally planar surface region.

3. An anchor as defined in claim 2 wherein said projection comprises a barb feature.

4. An anchor as defined in claim 2 wherein said projection is supported on a generally elastic member, said generally elastic member being arranged and adapted to urge said projection into said recess during use of said anchor.

5. An anchor as defined in claim 4 wherein said generally elastic member exhibits a longitudinal axis, said longitudinal axis being disposed in a plane substantially normal to a longitudinal axis of said anchor.

6. An anchor as defined in claim 4 wherein said generally elastic member exhibits a longitudinal axis, said longitudinal axis being disposed in a plane substantially parallel to a longitudinal axis of said anchor.

7. An anchor as defined in claim 1 wherein said first feature comprises a generally ellipsoid projection.

8. An anchor as defined in claim 7 wherein said generally ellipsoid projection comprises a generally hemispherical projection.