Methods and apparatuses for bone restoration

• US 7,846,206 B2
• Filed: 06/09/2005
• Issued: 12/07/2010
• Est. Priority Date: 06/09/2004
• Status: Active Grant

• Current Assignee: Stryker European Operations Limited (Stryker Corporation)
• Original Assignee: Vexim SAS (Stryker Corporation)
• Inventors: Oglaza, Jean-Francois, Leonard, Alain, Renaud, Christian, Huet, Gildas
• Primary Examiner(s): Manahan; Todd E
• Assistant Examiner(s): CARTER, TARA ROSE E
• Application Number:
  US11/150,676
• Publication Number:
  US 20060004455A1
• Time in Patent Office: 2,007 Days
• Field of Search: 623 1711- 1716, 606/86.R, 606/90, 606/99, 606/105, 606246-249
• US Class Current: 623/17.11
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• CPC Class Codes: A61B 17/8858 laterally or radially expansible inflatable A61B17/8855
• 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 2/4601 for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/30224 cylindrical
• CPC Class Codes: A61F 2002/30471 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2002/30556 for adjusting thickness
• CPC Class Codes: A61F 2002/30579 with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30601 telescopic
• CPC Class Codes: A61F 2002/30617 Visible markings for adjusting, locating or measuring
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30774 internally-threaded
• 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 2002/4629 connected to the endoprosthesis or implant via a threaded connection
• CPC Class Codes: A61F 2002/4635 using minimally invasive surgery
• CPC Class Codes: A61F 2220/0091 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2250/0009 : for adjusting thickness
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

Methods and apparatuses for restoration of human or animal bone anatomy, which may include introduction, into a bone of an expansible implant capable of expansion in a single determined plane, positioning the expansible implant in the bone in order to correspond the single determined plane with a bone restoration plane and opening out the expansible implant in the bone restoration plane. A first support surface and a second support surface spread tissues within bone. The embodiments of the invention may also include injecting a filling material around the implant.

Claims

1. An expansible implant for bone restoration comprising:

a single plane of expansion intrinsic to the implant, wherein the single plane of expansion corresponds to a bone restoration plane;

first and second opposed plates respectively forming first and a second bearing surfaces for the bone, wherein the first and second plates move away from one another according to the single plane of expansion at the time of the expansion of the implant;

first and second implant ends substantially aligned along a longitudinal axis of the implant, wherein the first implant end includes an opening for allowing engagement of the implant with an implant carrier;

at least one pair of first and second supports, wherein each support of a pair of supports includes a first end connected to the first or second plate and a second end connected to the first or second implant ends; and

a first material web provided between each respective support and the corresponding plate the support is connected to, and

a second material web provided between each respective support and the corresponding implant end the support is connected to, wherein

each material web plastically deforms during expansion of the implant to control expansion of the implant, and wherein each material web comprises a reduced thickness portion of a respective support.

2. A method for restoration of human or animal bone anatomy, comprising:

introducing, into a bone, an expansible implant having;

a single plane of expansion;

at least one plate forming a bearing surface for bone, wherein upon expansion of the implant, the plate is directed away from a longitudinal axis of the implant according to the single plane of expansion at the time of the expansion of the implant;

first and second implant ends substantially aligned along the longitudinal axis of the implant, wherein the first implant end includes an opening for allowing engagement of the implant with an implant carrier;

at least one support connected to at least one plate and at least one implant end; and

a zone of material provided between the at least one support and at least one of the at least one plate and the at least one implant end, wherein

the zone of material plastically deforms during expansion of the implant for controlling the expansion of the implant, and wherein the zone of material comprises a reduced thickness portion of a respective support;

positioning the expansible implant in the bone in order to correspond the single plane of expansion with a bone restoration plane, and

expanding the implant in the bone restoration plane.