Bone anchoring system

• US 6,517,542 B1
• Filed: 08/03/2000
• Issued: 02/11/2003
• Est. Priority Date: 08/04/1999
• Status: Expired due to Fees

• Current Assignee: Cleveland Clinic Foundation
• Original Assignee: Cleveland Clinic Foundation
• Inventors: Byerman, Bryan P., Papay, Francis A.
• Primary Examiner(s): Robert, Eduardo C.
• Application Number:
  US09/632,132
• Time in Patent Office: 922 Days
• Field of Search: 606/72, 606/73, 606/232
• US Class Current: 606/232
• 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 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 17/8635 Tips of screws
• CPC Class Codes: A61B 17/864 hollow, e.g. with socket or cannulated
• CPC Class Codes: A61B 17/8685 comprising multiple separate parts
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors
• 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 2017/0453 threaded elements, e.g. set screws
• CPC Class Codes: A61C 8/0022 Self-screwing A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/0024 with self-boring cutting edge
• CPC Class Codes: A61C 8/0089 Implanting tools or instruments
• CPC Class Codes: A61F 2/0805 Implements for inserting tendons or ligaments
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/0829 without deformation of anchor parts, e.g. fixation screws on bone surface, extending barbs, cams, butterflies, spring-loaded pins
• CPC Class Codes: A61F 2002/0841 Longitudinal channel for insertion tool running through the whole tendon anchor, e.g. for accommodating bone drill, guidewire
• CPC Class Codes: A61F 2002/0852 Fixation of a loop or U-turn, e.g. eyelets, anchor having multiple holes
• CPC Class Codes: A61F 2002/0882 Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone

Abstract

A new bone anchoring system comprises a bone screw and a mechanical insert received in a central bore of the bone screw. The bone screw defines a self-tapping, self-boring tip for easy bone insertion as well as through-holes or other openings for receipt of new bone growth. The insert can be replaceably mounted in the bone screw, and a variety of different attachment structures can be defined in the proximal end of the insert for securing to suture thread, tissue or other prosthetic device.

Claims

1. An apparatus for implantation into a bone and for attaching suture thread, tissue, or a prosthetic device to the bone, said apparatus comprising:

a first portion having oppositely disposed first and second ends and external screw threads extending between said first and second ends, said first end having a self-tapping tip for cutting into solid non-drilled bone upon rotation of said first portion;

said first portion including at least one opening for, when implanted, receiving new bone growth; and

a second portion having oppositely disposed proximal and distal ends, said distal end being connected with said second end of said first portion, said proximal end including structure for attaching at least one of suture thread, tissue, and a prosthetic device;

said at least one opening in said first portion comprising a central bore extending between said first and second ends, said central bore being open at said first end.

2. The apparatus of claim 1 wherein said first portion comprises an anchor and said second portion comprises an insert.

3. The apparatus of claim 2 wherein said insert threadedly engages said anchor to fixedly connect said insert to said anchor.

4. The apparatus of claim 1 wherein said second portion is received in said central bore at said second end of said first portion.

5. The apparatus of claim 1 wherein said at least opening in said first portion further comprises a plurality of through-holes for, when said first portion is implanted, receiving new bone growth.

6. The apparatus of claim 5 wherein said plurality of through-holes extend radially through said first portion and are in fluid communication with said central bore.

7. The apparatus of claim 1 wherein said at least one opening in said first portion comprises a plurality of radially extending through-holes.

8. An apparatus for implantation into a bone and for attaching suture thread, tissue, or a prosthetic device to the bone, said apparatus comprising:

a first portion having oppositely disposed first and second ends and external screw threads extending between said first and second ends, said first end having a self-tapping tip for cutting into solid non-drilled bone upon rotation of said first portion;

said first portion including at least two openings for, when implanted, receiving new bone growth; and

a second portion having oppositely disposed proximal and distal ends, said distal end being connected with said second end of said first portion, said proximal end including structure for attaching at least one of suture thread, tissue, and a prosthetic device;

said at least two openings in said first portion comprising a central bore extending between said first and second ends and at least one radially extending through-hole, said central bore being open at said first end.

9. The apparatus of claim 8 wherein said first portion threadedly engages said second portion to fixedly connect said first and second portions.

10. The apparatus of claim 8 wherein said at least one radially extending through-hole comprises a plurality of through-holes in fluid communication with said central bore.

11. The apparatus of claim 8 wherein said at least two openings in said first portion comprise a plurality of radially extending through-holes.

12. An apparatus for implantation into a solid bone and for attaching suture thread, tissue, or a prosthetic device to the bone, said apparatus comprising:

a first portion having an axis and oppositely disposed first and second ends, said first portion including means for cutting into solid non-drilled bone upon rotation of said first portion and for axially moving said first portion into the solid non-drilled bone upon rotation of said first portion;

said first portion including at least one opening for, when implanted, receiving new bone growth; and

a second portion having oppositely disposed proximal and distal ends, said distal end being connected with said second end of said first portion, said proximal end including structure for attaching at least one of suture thread, tissue, and a prosthetic device;

said at least one opening in said first portion comprising a central bore extending between said first and second ends, said central bore being open at said first end.

13. The apparatus of claim 12 wherein said means for cutting into bone and for axially moving said first portion comprises external screw threads on said first portion and a self-tapping tip for cutting into the solid non-drilled bone.

14. The apparatus of claim 12 wherein said first portion threadedly engages said second portion to fixedly connect said first and second portions.

15. The apparatus of claim 12 wherein said at least opening in said first portion further comprises a plurality of through-holes for, when said first portion is implanted, receiving new bone growth.

16. The apparatus of claim 15 wherein said plurality of through-holes extend radially through said first portion and are in fluid communication with said central bore.

17. The apparatus of claim 12 wherein said at least one opening in said first portion comprises a plurality of radially extending through-holes.