PROSTHETIC APPLIANCE FOR REPLACING ONE OR MORE NATURAL VERTEBRAE

• US 3,426,364 A
• Filed: 08/25/1966
• Issued: 02/11/1969
• Est. Priority Date: 08/25/1966
• Status: Expired due to Term

• Current Assignee: William V. Lumb
• Original Assignee: William V. Lumb
• Inventors: Lumb, William V.
• Application Number:
  US04/575,065
• Time in Patent Office: 901 Days
• US Class Current: 623/17.15
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• 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 2/4425 made of articulated components
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30507 using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/30565 having spring elements
• CPC Class Codes: A61F 2002/30578 having apertures, e.g. for receiving fixation screws
• CPC Class Codes: A61F 2002/30599 stackable
• CPC Class Codes: A61F 2002/30777 Oblong apertures
• CPC Class Codes: A61F 2002/30779 arcuate
• CPC Class Codes: A61F 2002/30785 parallel
• CPC Class Codes: A61F 2002/449 comprising multiple spinal implants located in different intervertebral spaces or in different vertebrae
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2250/0063 Nested prosthetic parts
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00029 Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Claims

1. THE PROSTHETIC APPLIANCE WHICH COMPRISES:

AT LEAST THE BODY MEMBER SIZED FOR INSERTION INTO THE GAP LEFT IN THE SPINAL COLUMN OF A HIGHER VERTEBRATE FOLLOWING REMOVAL OF ONE OR MORE NATURAL VERTEBRAE THEREFROM, EACH OF SAID BODY MEMBERS HAVING AT LEAST ONE RELATIVELY FLAT SURFACE EXTENDING BETWEEN ITS ENDS THAT INCLUDES A LONGITUDINAL SUBSTANTIALLY SEMI-CYLINDRICAL TROUGH;

GENERALLY Y-SHAPED ELEMENTS HAVING A STEM-PORTION MERGING AT ONE EXTREMITY INTO DIVERGENT LEG-PORTIONS THAT FASTEN ONTO THE FLATTENED SURFACES OF EACH OF THE BODY MEMBERS ASTRIDE THE TROUGH AND COOPERATE THEREWITH TO DEFINE A PASSAGE SIZED TO LOOSELY RECEIVE SAID VERTEBRATE'"'"''"'"'S SPINAL CORD;

FIRST CONNECTING MEANS ATTACHED TO THE STEM-PORTION OF EACH Y-SHAPED ELEMENT LOCATED ADJACENT TO NATURAL VERTEBRA ADAPTED FOR ATTACHMENT TO THE NEURAL SPINE OF THE LATTER;

AND, SECOND CONNECTING MEANS ATTACHED TO EACH BASE MEMBER LOCATED ADJACENT A NATURAL VERTEBRA ADAPTED FOR ATTACHMENT TO THE CENTRUM THEREOF, SAID FIRST AND SECOND CONNECTING MEANS COOPERATING WITH ONE ANOTHER TO HOLD SAID ADJACENT NATURAL VERTEBRA IN FIXED RELATION TO SAID APPLIANCE.