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US5968047: Fixation devices

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Filing Information

Inventor(s) Thomas Mills Reed ·
Assignee(s) None listed in document.
Attorney/Agent(s) Arnold, White & Durkee ·
Primary Examiner Michael Buiz ·
Assistant Examiner Julian Woo ·
Application Number US9110507
Filing date 07/06/1998
Issue date 10/19/1999
Predicted expiration date 04/05/2016
U.S. Classifications 606/76  · 606/69  ·
International Classifications A61B 1756  ·
Kind CodeA
International Classifications 60669;76;77;72;73;104 ·
Related U.S. Application DataThe present application claims priority from both provisional application 60/027,510 filed Sep. 7, 1996 entitled "Bone Fixation Devices" filed Oct. 7, 1996 and as a continuation of application Ser. No. 08/791,611, filed Jan. 31, 1997, now U.S. Pat. No. 5,868,749, which is a continuation-in-part of U.S. patent application Ser. No. 08/627,355, filed Apr. 5, 1996 now abandoned.
71 Claims, No Drawings


Abstract

Sterile bone fixation devices, such as bone screws, pins, anchors and plates, fabricated from bone tissue and the method of making such devices.

Independent Claims | See all claims (71)

  1. 1. A fixation device formed in the shape of a screw, said fixation device made of human or animal cortical bone, said fixation device being grafted into a biologically active structure, said fixation device being interactive with said structure and forming a part of said structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) a head portion functionally adapted to provide rotational movement to said fixation device;b) said head portion being fixedly attached to a longitudinal body portion, said head portion being cylindrical and having a slot, said slot being perpendicular to said longitudinal body portion and adapted to receive a rotational tool; andc) said longitudinal body portion being at least partially threaded with a thread pitch of 0.5 to 3.0 mm, said longitudinal body portion having a threaded diameter ranging from 1 to 8 mm and a core diameter from 1 to 8 mm.
  2. 13. A fixation device formed in the shape of a screw, said fixation device being adapted to be grafted into a biologically active structure, said fixation device being interactive with said structure and forming a part of said structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) a head portion functionally adapted to provide rotational movement to said fixation device, said head portion being larger in diameter than the longitudinal body portion, said head portion diameter ranging from about 1 to 12 mm, and said head portion being cylindrical with at least two flat sides;b) said head portion being fixedly attached to a longitudinal body portion; andc) said longitudinal body portion including means being at least partially threaded, and said longitudinal body portion having a threaded diameter ranging from 1 to 8 mm.
  3. 21. A kit comprising: (1) a bone screw made from bone tissue, and (2) an adapter made of surgical steel having one end with a recess sized to mesh with the head of said screw and the other end having a screw head recess, sized to allow use of a driver to drive said bone screw.
  4. 22. A kit comprising: (1) a bone screw made from bone tissue, and (2) an adapter made of surgical steel having one end with a recess sized to mesh with the head of said screw and the other end having a cruciform recess, sized to allow use of a Philip's driver to drive said bone screw.
  5. 23. A bone fixation device formed in the shape of a screw with a head portion and a longitudinal body portion, said fixation device being made of human or animal cortical bone tissue, said fixation device being able to be grafted into a biologically active structure, said fixation devices becomes part of said structure and need not be removed, said fixation device comprising:a) said head portion functionally adapted to provide rotational movement to said fixation device, said head portion being adapted to receive a rotational tool, said head portion being larger in diameter than the longitudinal body portion, said head diameter ranging from 2 to 10 mm, and said head portion being cylindrical with at least two flat sides;b) said head portion being fixedly attached to said longitudinal body portion; andc) said longitudinal body portion being at least partially threaded with a thread pitch of 0.5 to 3.0 mm, said longitudinal body portion having a threaded diameter ranging from 1 to 8 mm and a core diameter range from 1 to 8 mm, said longitudinal body portion having at least one aperture perpendicular to said longitudinal body portion with a configuration sufficient to accommodate at least one suture, said aperture being below said head portion and above the first thread.
  6. 26. A fixation device formed in the shape of a screw, said fixation device made of human or animal cortical bone, said fixation device being grafted into a biologically active structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) two end portions, at least one of said end portions being adapted to provide rotational movement to said fixation device;b) said end portions being fixedly attached to a longitudinal body portion;c) one of said end portions formed in the shape of a cylindrical screw head and having an indentation, said indentation being perpendicular to said longitudinal body portion, said indentation being shaped to receive a rotational tool; andd) said longitudinal body portion being at least partially threaded with a thread pitch of 0.5 to 3.0, said longitudinal body portion having a thread diameter ranging from 1 to 8 mm and a core diameter range from 1 to 8 mm.
  7. 33. A fixation device formed in the shape of a screw, said fixation device being adapted to be grafted into a biologically active structure, said fixation device being interactive with said structure and forming a part of said structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) two end portions, at least one of said end portions being able to receive a rotational tool to provide rotational movement to said fixation device;b) said end portions being fixedly attached to a longitudinal body portion; andc) said longitudinal body portion, wherein said longitudinal body portion has an aperture extending along the entirety of said longitudinal body portion, said aperture having a configuration sufficient to allow the insertion of a pin, said longitudinal body portion having threads extending from a region above one of said end portions to a region below other said end portion.
  8. 34. A fixation device formed in the shape of a screw, said fixation device being made of human or animal cortical bone tissue, said fixation device being able to be grafted into a biologically active structure, said fixation device becoming a part of said structure and need not be removed from said biologically active structure, said fixation device comprising:a) two end portions, at least one of said end portions being able to receive a rotational tool to provide rotational movement to said fixation device, at least one of said ends being cylindrical and having only two flat sides;b) said end portions being fixedly attached to a longitudinal body portion; andc) said longitudinal body portion which has an aperture extending along the entirety of said longitudinal body portion, said aperture having a configuration sufficient to allow the insertion of a pin, said longitudinal body portion having threads extending from a region about one of said ends to a region below other said end, wherein the thread diameter is about 3.0 mm, the thread pitch is about 1.25, and the core diameter is about 1.9 mm.
  9. 37. A fixation device in the shape of a pin, said fixation device made of human or animal cortical bone, said fixation device being adapted to be grafted into a biologically active structure, said fixation device being interactive with said structure and forming a part of said structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) two end portions being fixedly attached to a longitudinal body portion;b) said longitudinal body portion including a means for fixedly retaining at least a portion of said longitudinal body portion in said biologically active structure; andc) said longitudinal body portion is elliptical.
  10. 38. A fixation device in the shape of a pin, said fixation device made of human or animal cortical bone, said fixation device being adapted to be grafted into a biologically active structure, said fixation device being interactive with said structure and forming a part of said structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) two end portions being fixedly attached to a longitudinal body portion;b) said longitudinal body portion including a means for fixedly retaining at least a portion of said longitudinal body portion in said biologically active structure; andc) said longitudinal body portion having a plurality of barbs extending from a region above one of said end portions to a region below other said end portion.
  11. 39. A fixation device in the form of an screw adapted to be grafted into a biologically active structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device comprising:a) a head portion functionally adapted to provide rotational movement to said fixation device, said head portion having at least one aperture extending through the width of said head portion;b) said head portion being fixedly attached to a longitudinal body portion; andc) said longitudinal body portion being at least partially threaded.
  12. 47. A fixation device adapted to be grafted into a biologically active structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device made of human or animal cortical bone, said fixation device comprising:a) a plate having a series of holes; andb) said plate is in the shape of an oblique-L.
  13. 48. A fixation device adapted to be grafted into a biologically active structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device made of human or animal cortical bone, said fixation device comprising:a) a plate having a series of holes; andb) said plate is in the shape of a small-T.
  14. 49. A fixation device adapted to be grafted into a biologically active structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device made of human or animal cortical bone, said fixation device comprising:a) a plate having a series of holes; andb) said plate is in the shape of a clover leaf.
  15. 70. A fixation device adapted to be grafted into a biologically active structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device made of human or animal cortical bone, said fixation device comprising:a) a plate having a series of holes; andb) said human or animal cortical bone is mineralized.
  16. 71.71. A method of making a fixation device in the shape of a pin, said fixation device made of human or animal cortical bone tissue, said fixation device being adapted to be grafted into a biologically active structure, said fixation device being interactive with said structure and forming a part of said structure, said fixation device being compatible with the functional characteristics of said structure, said fixation device having two end portions being fixedly attached to a longitudinal body portion, said longitudinal body portion including a means for fixedly retaining at least a portion of said longitudinal body portion in said biologically active structure, the method comprising:a) sterilizing said human or animal cortical bone tissue;b) machining said human or animal cortical bone tissue into the shape of a pin with a cooling lubricant under conditions that do not allow the surface temperature at which bone tissue is burned or damaged and that allow said fixation device to be sterilized sufficiently to be acceptable to use in the fixation of living bone;c) sterilizing the fixation device after said machining.

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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US5868749 Thomas M. Reed Feb 1999
US5968047 Thomas Mills Reed Oct 1999