Method and apparatus for fixation of bone during surgical procedures

• US 5,578,036 A
• Filed: 12/06/1993
• Issued: 11/26/1996
• Est. Priority Date: 12/06/1993
• Status: Expired due to Term

• Current Assignee: Zimmer Biomet CMF and Thoracic, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Foss, Stephen J., Stone, Kevin T.
• Primary Examiner(s): SHAY, RANDY CITRIN
• Application Number:
  US08/163,334
• Time in Patent Office: 1,086 Days
• Field of Search: 606/56, 606/69, 606/70, 606/71, 606/96, 606/97, 606/98, 606/101, 606/102, 606/104, 411/457, 411/461, 411/469
• US Class Current: 606/281
• CPC Class Codes: A61B 17/688 for reattaching pieces of the skull
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61F 2/2875 Skull or cranium A61F2/2803 and A61F2/3099 take precedence
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2002/30113 circular
• CPC Class Codes: A61F 2002/30225 Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/30578 having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30594 slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30777 Oblong apertures
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2310/00023 Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Abstract

An apparatus for fixation of bone during surgical procedures using a bone screw. The apparatus includes a body member which is able to cover at least a portion of the bone. The apparatus also includes an attachment member which is able to be secured to the bone and is able to receive the bone screw. The apparatus also includes an extension member which is connected to the body member and the attachment member.

Claims

1. An apparatus for fixation of bone during surgical procedures using at least one bone screw, said apparatus comprising:

a body member defining a plane which is operable to cover at least a portion of the bone;

at least one attachment member which is operable to be secured to the bone, said at least one attachment member including means for receiving the at least one bone screw and securing said at least one attachment member to the bone upon receipt of the at least one bone screw; and

at least one extension member mechanically communicating with said body member and a respective one of said at least one attachment member, a distal end of said at least one extension member being operable to be displaced generally radially with respect to said body member within the plane of the body member

whereby by varying the displacement of said extension member with respect to said body member, said at least one attachment member may be secured to the bone by the at least one bone screw at a plurality of different positions with respect to said body member.

2. The apparatus as set forth in claim 1, wherein the bone includes a burr hole, said body member, said at least one attachment member, and said at least one extension member are operable to form a burr hole cover.

3. The apparatus as set forth in claim 1, wherein said body member includes a hinge portion which is operable to allow said extension member to be displaced with respect to said body member.

4. The apparatus as set forth in claim 1, wherein said body member includes a latch portion which is operable to selectively allow said extension member to be displaced with respect to said body member.

5. The apparatus as set forth in claim 1, wherein said body member is substantially circular in configuration and being at least partially defined by a center and a radial centerline rotated about said center, said extension member being operable to extend in a direction generally perpendicular with respect to said radial centerline of said body member.

6. The apparatus as set forth in claim 1, wherein said body member further includes a plurality of elongated apertures, said elongated apertures being arranged generally concentrically with respect to said body member.

7. The apparatus as set forth in claim 6, wherein said body member further includes a plurality of generally circular apertures, said plurality of generally circular apertures being arranged generally concentrically with respect to said body member.

8. The apparatus as set forth in claim 1, wherein said extension member is integrally formed with said body member.

9. A method for fixating bone during surgical procedures using a bone screw, said method comprising the steps of:

forming an apparatus for fixation of the bone, said apparatus including;

(a) a body member defining a plane which is operable to cover at least a portion of the bone,

(b) at least one attachment member which is operable to be secured to the bone, said at least one attachment member including means for receiving the bone screw and securing said at least one attachment member to the bone upon receipt of the bone screw, and

(c) at least one extension member mechanically communicating with a respective one of said body member and said at least one attachment member, a distal end of said at least one extension member being operable to be displaced generally radially with respect to said body member within the plane of the body member

determining a desired position of said body member with respect to the bone;

determining a desired position of the bone screw with respect to the bone;

displacing said extension member with respect to said body member in response to said step of determining the desired position of said body member and said step of determining the desired position of the bone screw; and

securing said apparatus to the bone by causing the bone screw to engage said at least one attachment member and the bone.

10. The method for fixating bone during surgical procedures according to claim 9, wherein said body member further comprises a hinge portion mechanically communicating with said extension member, said step of displacing said extension member including the step of deforming said hinge portion.

11. The method for fixating bone during surgical procedures as set forth in claim 9, wherein said body member further comprises a plurality of extension members which are operable to be secured to the bone using a plurality of bone screws, said method further comprising the additional steps of:

(a) displacing said plurality of extension members with respect to said body member in response to said step of determining the desired position of said bone screws, and

(b) securing said plurality of extension members to said bone using said plurality of bone screws.

12. The method for fixating bone during surgical procedures as set forth in claim 9, wherein said step of forming an apparatus for fixation of the bone further comprises the additional step of forming a plurality of concentrically disposed elongated flow passages in said body member.

13. The method for fixating bone during surgical procedures as set forth in claim 9, wherein said step of forming an apparatus for fixation of the bone further comprises the step of forming a latch portion between said extension member and said body member.

14. The method for fixating bone during surgical procedures as set forth in claim 13, further comprising the additional step of determining whether to sever said latch portion is in response to said step of determining the desired position of said body member and said step of determining the desired position of the bone screw.

15. An apparatus for fixation of bone during surgical procedures which is operable to cover a burr hole formed in said bone, said apparatus being further operable to be secured to said bone using a plurality of bone screws, said apparatus comprising:

a body member which is operable to cover said burr hole;

a plurality of attachment members extending radially from said body member which are operable to be secured to the bone, each of said attachment members including means for receiving one of the bone screws so as to secure said attachment members to said bone;

a plurality of latch portions which mechanically communicate with said extension members, said latch portions being operable to selectively allow said extension members to be displaced with respect to said body member; and

a plurality of elongated flow passages disposed on said body member, said plurality of elongated flow passages being disposed concentrically with respect to the center of said body member,

whereby said body member is operable to be secured to the bone in a position covering said burr hole and fluid flowing proximate to the bone is operable to flow through said body member.

16. The apparatus for fixation of bone during surgical procedures as set forth in claim 15, further comprising a plurality of circular flow passages which are disposed on said body member concentrically with said plurality of elongated flow passages.

17. The apparatus for fixation of bone during surgical procedures as set forth in claim 15, further comprising a plurality of extension members, each of said extension members being disposed between each of said attachment members and said body member, each of said extension members being operable to be displaced with respect to said body member.

18. The apparatus for fixation of bone during surgical procedures as set forth in claim 17, wherein said body member further comprises a plurality of hinge portions which mechanically communicate with said extension members, said hinge portions permitting said extension members to be displaced with respect to said body member.

19. The apparatus for fixation of bone during surgical procedures as set forth in claim 18, wherein said body member is substantially circular in configuration.

20. The apparatus for fixation of bone during surgical procedures as set forth in claim 19, wherein said body member is convexly curved.

21. An apparatus for fixation of bone during surgical procedures using at least one bone screw, said apparatus comprising:

a body member defining a generally planar surface which is operable to cover at least a portion of the bone;

at least one attachment member which is operable to be secured to the bone, the at least one attachment member including means for receiving the at least one bone screw and securing said at least one attachment member to the bone upon receipt of the at least one bone screw; and

at least one extension member mechanically communicating with said body member and a respective one of said at least one attachment member, a distal end of said at least one extension member being operable to be displaced generally radially with respect to said body member within the plane of the body member, said body member including a latch portion which is operable to selectively allow said extension member to be displaced with respect to said body member,

whereby by varying the displacement of said extension member with respect to said body member, said at least one attachment member may be secured to the bone by the at least one bone screw at a plurality of different positions with respect to said body member.

22. An apparatus for fixation of bone during surgical procedures using at least one bone screw, said apparatus comprising:

a body member which is operable to cover at least a portion of the bone;

at least one attachment member which is operable to be secured to the bone, said at least one attachment member including means for receiving the at least one bone screw and securing said at least one attachment member to the bone upon receipt of the at least one bone screw; and

at least one extension member mechanically communicating with said body member and a respective one of said at least one attachment member, said at least one extension member being operable to be positioned with respect to said body member, said body member being substantially circular in configuration and being at least partially defined by a center and a radial centerline rotated about said center, said at least one extension member being operable to extend in a direction generally perpendicular with respect to said radial centerline of said body member;

whereby by varying the position of said at least one extension member with respect to said body member, said at least one attachment member may be secured to the bone by the at least one bone screw at a plurality of different positions with respect to said body member by varying the position of said at least one extension member with respect to said body member.

23. A method for fixating bone during surgical procedures using a bone screw, said method comprising the steps of:

forming an apparatus for fixation of the bone, said apparatus including;

(a) a body member defining a generally planar surface which is operable to cover at least a portion of the bone,

(b) at least one attachment member which is operable to be secured to the bone, said at least one attachment member including means for receiving the bone screw and securing said at least one attachment member to the bone upon receipt of the bone screw,

(c) at least one extension member mechanically communicating with a respective one of said body member and said at least one attachment member, a distal end of said at least one extension member being operable to be displaced generally radially with respect to said body member within the plane of the body member, and

(d) a latch portion situated between said extension member and said body member;

determining a desired position of said body member with respect to the bone;

determining a desired position of the bone screw with respect to the bone;

displacing said extension member with respect to said body member in response to said step of determining the desired position of said body member and said step of determining the desired position of the bone screw; and

securing said apparatus to the bone by causing the bone screw to engage said at least one attachment member and the bone.

24. An apparatus for fixation of bone during surgical procedures which is operable to cover a burr hole formed in the bone, said apparatus being further operable to be secured to the bone using a plurality of bone screws, said apparatus comprising:

a body member which is operable to cover the burr hole;

a plurality of attachment members extending radially from said body member that are operable to be secured to the bone, each of said attachment members including means for receiving one of the bone screws so as to secure said attachment members to the bone;

a plurality of elongated flow passages disposed on said body member, said plurality of elongated flow passages being disposed concentrically with respect to the center of said body member; and

a plurality of extension members, each of said extension members being disposed between a respective one of said attachment members and said body member, each of said extension members being operable to be moved with respect to said body member, said body member further comprises a plurality of latch portions which mechanically communicate with said extension members, said latch portions being operable to selectively allow said extension members to be moved with respect to said body member;

whereby said body member is operable to be secured to the bone in a position covering the burr hole and fluid flowing proximate to the bone is operable to flow through said body member.