Method for treating orthopedic fractures with a fixation member

• US 6,361,538 B1
• Filed: 03/20/2001
• Issued: 03/26/2002
• Est. Priority Date: 01/31/2000
• Status: Expired due to Term

• Current Assignee: Biomet Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: DePuy Orthopaedics Incorporated (Johnson & Johnson)
• Inventors: Sanders, Roy W., Fenaroli, Don, Cornwall, G. Bryan
• Primary Examiner(s): Philogene, Pedro
• Application Number:
  US09/812,303
• Publication Number:
  US 20020029042A1
• Time in Patent Office: 371 Days
• Field of Search: 606/69, 606/70, 606/73, 606/72, 606/75, 606/104, 411/89, 411/132, 411/338
• US Class Current: 606/324
• CPC Class Codes: A61B 17/809 with bone-penetrating elements, e.g. blades or prongs bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233
• CPC Class Codes: A61B 17/842 Flexible wires, bands or straps A61B17/72, A61B17/82, A61B17/86 take precedence

Abstract

A method of inhibiting relative movement between a first bone fragment and a second bone fragment is disclosed. The method includes the step of advancing a fastener into the second bone fragment, the advancing step causing the fastener to contact a fixation member which in turn causes a first penetration structure of the fixation member to penetrate through an outer surface of the first bone fragment. The method further includes the step of preventing further advancement of the penetration structure into the first bone fragment with a stop member of the fixation member so that a space is maintained between a lower surface of a body of the fixation member and the outer surface of the first bone fragment.

Claims

1. A method of inhibiting relative movement between a first bone fragment and a second bone fragment, comprising the steps of:

advancing a fastener into said second bone fragment, said advancing step causing said fastener to contact a fixation member which in turn causes a first penetration structure of said fixation member to penetrate through an outer surface of said first bone fragment; and

preventing further advancement of said penetration structure into said first bone fragment with a stop member of said fixation member so that a space is maintained between a lower surface of a body of said fixation member and said outer surface of said first bone fragment.

2. The method of claim 1, wherein said advancing step includes the step of advancing said fastener (i) through a fastener hole defined in said body of said fixation member, and (ii) into contact with a rim portion of said body of said fixation member, said rim portion being defined by said fastener hole.

3. The method of claim 1, wherein said preventing step includes the step of advancing said stop member into contact with said second bone fragment.

4. The method of claim 1, wherein:

said stop member includes an annular ridge which extends outwardly from said lower surface of said body of said fixation member, and

said preventing step includes the step of advancing said annular ridge into contact with said second bone fragment after said penetration structure has penetrated through said outer surface of said first bone fragment.

5. The method of claim 3, wherein said stop member is disposed on said body of said fixation member.

6. The method of claim 3, wherein:

said fixation member further includes at least one arm extending outwardly from said body, and

said stop member is disposed on said at least one arm.

7. The method of claim 1, wherein:

said fixation member further includes at least one arm extending outwardly from said body, and

said penetration member is located on said arm.

8. The method of claim 6, wherein:

said fixation member includes a plurality of arms, each extending outwardly from said body, and

said fixation member further includes a plurality of penetration structures, each being supported by a respective arm of said plurality of arms.

9. The method of claim 1, wherein:

said fixation member further includes at least one arm extending outwardly from said body,

said stop member includes a ridge member which extends from said at least one arm, and

said preventing step includes the step of advancing said ridge member into contact with said first bone fragment after said penetration structure has penetrated through said outer surface of said first bone fragment.

10. A method of inhibiting relative movement between a first bone fragment and a second bone fragment, comprising the steps of:

advancing a fastener into said second bone fragment, said fastener advancing step causing said fastener to move into contact with said fixation member; and

advancing a first penetration structure of said fixation member through an outer surface of said first bone fragment in response to said fastener advancing step,

wherein movement of said fastener into contact with said fixation member causes a stop member to contact either said first bone fragment or said second bone fragment so that (i) further advancement of said penetration structure through said outer surface of said first bone fragment is prevented, and (ii) a space is maintained between a lower surface of a body of said fixation member and said outer surface of said first bone fragment.

11. The method of claim 10, wherein said fastener advancing step includes the step of advancing said fastener (i) through a fastener hole defined in said body of said fixation member, and (ii) into contact with a rim portion of said body of said fixation member, said rim portion being defined by said fastener hole.

12. The method of claim 10, wherein:

said stop member includes an annular ridge which extends outwardly from said lower surface of said body of said fixation member, and

movement of said fastener into contact with said fixation member causes said annular ridge to advance into contact with said second bone fragment after said penetration structure is advanced through said outer surface of said first bone fragment.

13. The method of claim 10, wherein:

said fixation member includes at least one arm extending outwardly from said body,

said stop member includes a ridge member which extends from said at least one arm, and

movement of said fastener into contact with said fixation member causes said ridge member to advance into contact with said first bone fragment after said penetration structure penetrates through said outer surface of said first bone fragment.

14. A method of stabilizing bone fragments, comprising the steps of:

advancing a fastener into contact with a fixation member;

advancing a penetration structure of said fixation member through an outer surface of a first bone fragment in response to said fastener advancing step, and

moving a stop member of said fixation member into contact with either said first bone fragment or a second bone fragment, in response to said fastener advancing step, so that (a) further penetration of said penetration structure into said first bone fragment is prevented after said penetration structure has penetrated through said outer surface of said first bone fragment, and (b) a space is maintained between a lower surface of a body of said fixation member and said outer surface of said first bone fragment.

15. The method of claim 14, wherein said fastener advancing step includes the step of advancing said fastener (i) through a fastener hole defined in said body of said fixation member, and (ii) into contact with a rim portion of said body of said fixation member, said rim portion being defined by said fastener hole.

16. The method of claim 14, wherein:

said stop member includes an annular ridge which extends outwardly from said lower surface of said body of said fixation member, and

movement of said fastener into contact with said fixation member causes said annular ridge to advance into contact with said second bone fragment after said penetration structure is advanced through said outer surface of said first bone fragment.

17. The method of claim 14, wherein:

said fixation member includes at least one arm extending outwardly from said body,

said stop member includes a ridge member which extends from said at least one arm, and

movement of said fastener into contact with said fixation member causes said ridge member to advance into contact with said first bone fragment after said penetration structure is advanced through said outer surface of said first bone fragment.

18. The method of claim 14, wherein:

said stop member is disposed on said body of said fixation member, and

said fixation member further includes a plurality of arms extending outwardly from said body.

19. The method of claim 14, wherein:

said fixation member includes at least one arm extending outwardly from said body, and

said stop member is disposed on said at least one arm.

20. The method of claim 14, wherein:

said fixation member includes a plurality of arms, each extending outwardly from said body, and

said fixation member further includes a plurality of penetration structures, each being supported by a respective arm of said plurality of arms.