SPINAL TISSUE DISTRACTION DEVICES

• US 20090182386A1
• Filed: 03/25/2009
• Published: 07/16/2009
• Est. Priority Date: 08/16/2005
• Status: Active Grant

• Current Assignee: IZI Medical Products LLC (Halma PLC)
• Original Assignee: Benvenue Medical, Inc. (Halma PLC)
• Inventors: Schaller, Laurent
• Granted Patent: US 8,808,376 B2
• Time in Patent Office: Days
• US Class Current: 606/86.R
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• CPC Class Codes: A61B 17/7097 Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants disc prostheses made of inflatable chambers or pockets filled with fluid A61F2/441; replacing the nucleus pulposus A61F2002/444
• CPC Class Codes: A61B 17/8852 capable of being assembled or enlarged, or changing shape, inside the bone or disc
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2/441 made of inflatable pockets or chambers filled with fluid, e.g. with hydrogel
• 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 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2002/30153 rectangular
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30263 cubical
• CPC Class Codes: A61F 2002/30289 helically-coiled
• CPC Class Codes: A61F 2002/30462 retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2002/3052 unrestrained in only one direction, e.g. moving unidirectionally
• 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 2002/30601 telescopic
• CPC Class Codes: A61F 2002/30677 : Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• CPC Class Codes: A61F 2002/30772 : Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/4415 : elements of the prosthesis being arranged in a chain like manner
• CPC Class Codes: A61F 2002/448 : comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2002/4627 : with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2002/4683 : by applying ultrasonic vibrations
• CPC Class Codes: A61F 2002/4688 : having operating or control means
• CPC Class Codes: A61F 2210/0014 : using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0085 : hardenable in situ, e.g. epoxy resins
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0075 : sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0019 : rectangular
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0084 : cubical
• CPC Class Codes: A61F 2230/0091 : helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2250/0067 : Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: A61F 2310/00293 : containing a phosphorus-containing compound, e.g. apatite

Abstract

Spinal tissue distraction devices that include a member which has a pre-deployed configuration for insertion between tissue layers and a deployed configuration in which the member, by change of configuration, forms a support structure for separating and supporting layers of spinal tissue.

Claims

1-75. -75. (canceled)

76. A vertebral implant for treating a vertebral body including opposed endplates and cancellous bone therebetween, the implant comprising:

a structure having a vertical extent when inserted into the vertebral body sufficient to exert a force that separates and/or supports the opposed endplates of the vertebral body and a transverse configuration that contains a region of undisturbed cancellous bone that extends between the opposed endplates.

77. The implant of claim 76 in which the transverse configuration of the implant encircles the region of undisturbed cancellous bone.

78. The implant of claim 76 in which the region of undisturbed cancellous bone comprises a column of cancellous bone defined within the implant.

79. The implant of claim 76 in which the implant includes a plurality of stacked windings.

80. The implant of claim 76 in which the implant includes a flow path configured to direct flowable material toward the region of undisturbed cancellous bone.

81. The implant of claim 76 in which the implant is adapted to be advanced along a guide member for insertion into the vertebral body.

82. A vertebral implant for placement within a vertebral body having opposed endplates and cancellous bone therebetween, upon insertion the implant comprising:

a plurality of tiers extending vertically through the cancellous bone of the vertebral body and exerting a force that separates and/or supports the opposed endplates of the vertebral body; and

the tiers containing a region of undisturbed cancellous bone extending between the endplates.

83. The implant of claim 82 in which the tiers encircle the region of undisturbed cancellous bone.

84. The implant of claim 82 in which the region of undisturbed cancellous bone comprises a column of cancellous bone defined by the plurality of tiers.

85. The implant of claim 82 in which the implant includes a flow path configured to direct flowable material toward the region of undisturbed tissue.

86. A method of treating a vertebral body including opposed endplates and cancellous bone therebetween, the method comprising:

inserting a structure into a vertebral body, the structure when inserted having a vertical extent sufficient to exert a force that separates and/or supports the opposed endplates of the vertebral body and a transverse configuration that contains a region of undisturbed cancellous bone extending between the endplates.

87. The method of claim 86 in which the structure has a plurality of generally horizontal tiers.

88. The method of claim 87 in which the tiers encircle the region of undisturbed cancellous bone.

89. The method of claim 86 furthering including introducing flowable material into the region of undisturbed cancellous bone.

90. The method of claim 86 in which the structure is advanced along a guide member for insertion into the vertebral body.

91. A method of treating a vertebral body, the vertebral body including opposed endplates and cancellous bone therebetween, the method comprising:

inserting an elongated member through an access opening in a vertebral body, the elongated member having an axis;

advancing the member in a generally axial direction into the cancellous bone of the vertebral body; and

forming the member into a structure that vertically extends though the cancellous bone, the structure exerting a force that separates and/or supports the opposed endplates and contains a region of undisturbed cancellous bone that extends between the endplates.

92. The method of claim 91 in which the structure includes a plurality of stacked windings.

93. The method of claim 91 furthering including introducing flowable material into the region of undisturbed cancellous bone.

94. The method of claim 91 in which the elongated member is advanced along a guide member through the cancellous bone of the vertebral body.

95. The method of claim 91 in which the structure encircles the region of undisturbed cancellous bone.