Intervertebral locking device

• US 5,360,430 A
• Filed: 07/29/1993
• Issued: 11/01/1994
• Est. Priority Date: 07/29/1993
• Status: Expired due to Fees

• Current Assignee: Lin, Chih-I
• Original Assignee: Lin, Chih-I
• Inventors: Lin, Chih-I
• Primary Examiner(s): Graysay, Tamara L.
• Application Number:
  US08/098,855
• Time in Patent Office: 460 Days
• Field of Search: 606/61, 606/72, 623/17
• US Class Current: 606/247
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/4425 made of articulated components
• CPC Class Codes: A61F 2002/30143 hexagonal
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30289 helically-coiled
• CPC Class Codes: A61F 2002/30566 Helical springs
• CPC Class Codes: A61F 2002/30576 with extending fixation tabs
• CPC Class Codes: A61F 2002/30578 having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30662 with rotation-limiting means
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30892 parallel
• CPC Class Codes: A61F 2230/0017 Angular shapes
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section

Abstract

An intervertebral locking device includes a bottom base, a bracing member, a top base, and at least one adjusting arm. The bottom base is provided on the upper surface thereof with a fastening member and on the lower surface thereof with one or more spikes. The bracing member has a bottom united with the fastening member attached to the upper surface of the bottom base. The top base is provided on the lower surface thereof with a fastening member and on the upper surface thereof with one or more spikes. The adjusting arm has one end serving as an adjusting end and another end acting as a locking end. The adjusting end of the adjusting arm is fastened to the bottom base or the top base in such a manner that the adjusting end is first adjusted to be in an appropriate position and is then fixed securely at that position. The locking end of the adjusting arm is fixed appropriately on one of the two vertebrae adjacent to a deformed or diseased vertebra under treatment.

Claims

1. An intervertebral locking device comprising:

a bottom base having an upper planar surface with a fastening member attached thereto and having a lower planar surface with one or more protruded bodies;

a bracing member having a lower end united with said fastening member attached to said upper planar surface of said bottom base and an upper end;

a top base having a lower planar surface with a fastening member attached thereto which, in turn, is attached to the upper end of said bracing member, and having an upper planar surface with one or more protruded bodies; and

a pair of adjusting arms each having one end serving as an adjusting end to fasten adjustably with said bottom base and said top base respectively, each of said adjusting arms further having another end acting as a locking end to anchor securely in an appropriate position with one of said locking ends being adapted to be secured to a vertebra adjacent to a deformed vertebra under treatment;

wherein said adjusting ends of said adjusting arms are securely fastened with said bottom base and said top base respectively after said adjusting ends are first adjusted to locate appropriately said locking ends;

wherein said bottom base and said top base are provided respectively with a base plate having a plurality of through holes, a fastening plate having a plurality of threaded holes corresponding in number and location to said through holes, and a plurality of screws which are put through said through holes of said base plate to engage said threaded holes of said fastening plate in such a manner that said screws penetrate said fastening plate to form a plurality of said protruded bodies; and

wherein said adjusting end of each of said adjusting arms is received in a slot centrally locate between said bottom base and said fastening plate.

2. An intervertebral locking device comprising:

a bottom base having an upper planar surface with a fastening member attached thereto and having a lower planar surface with one or more protruded bodies;

a bracing member having a lower end united with said fastening member attached to said upper planar surface of said bottom base and an upper end;

a top base having a lower planar surface with a fastening member attached thereto which, in turn, is attached to the upper end of said bracing member, and having an upper planar surface with one or more protruded bodies; and

a pair of adjusting arms each having one end serving as an adjusting end to fasten adjustably with said bottom base and said top base respectively, each of said adjusting arms further having another end acting as a locking end to anchor securely in an appropriate position with one of said locking ends being adapted to be secured to a vertebra adjacent to a deformed vertebra under treatment;

wherein said adjusting ends of said adjusting arms are securely fastened with said bottom base and said top base respectively after said adjusting ends are first adjusted to locate appropriately said locking ends; and

wherein said bracing member is a spring body and is fastened with said top base and said bottom base by means of two serrated fastening members located respectively at the upper end and the lower end of said bracing member, with said two serrated fastening members of said bracing member engaging respectively said fastening member of said top base and said fastening member of said bottom base.

3. An intervertebral locking device comprising:

a bottom base having an upper planar surface with a fastening member attached thereto and having a lower planar surface with one or more protruded bodies;

a bracing member having a lower end united with said fastening member attached to said upper planar surface of said bottom base and an upper end;

a top base having a lower planar surface with a fastening member attached thereto which, in turn, is attached to the upper end of said bracing member, and having an upper planar surface with one or more protruded bodies; and

a pair of adjusting arms each having one end serving as an adjusting end to fasten adjustably with said bottom base and said top base respectively, each of said adjusting arms further having another end acting as a locking end to anchor securely in an appropriate position with one of said locking ends being adapted to be secured to a vertebra adjacent to a deformed vertebra under treatment;

wherein said adjusting ends of said adjusting arms are securely fastened with said bottom base and said top base respectively after said adjusting ends are first adjusted to locate appropriately said locking ends; and

wherein said bracing member has at least one end of spherical construction and so dimensioned as to fasten with a receiving mount of ring-shaped construction of said fastening member of said bottom base.