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WO2023234977A1 - Dispositif implantable déployable et/ou repliable - Google Patents

Dispositif implantable déployable et/ou repliable Download PDF

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Publication number
WO2023234977A1
WO2023234977A1 PCT/US2022/081367 US2022081367W WO2023234977A1 WO 2023234977 A1 WO2023234977 A1 WO 2023234977A1 US 2022081367 W US2022081367 W US 2022081367W WO 2023234977 A1 WO2023234977 A1 WO 2023234977A1
Authority
WO
WIPO (PCT)
Prior art keywords
support members
configuration
implantable spinal
spinal device
rack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2022/081367
Other languages
English (en)
Inventor
Michael Bruce FRANKEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Healix Spine Inc
Original Assignee
Healix Spine Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Healix Spine Inc filed Critical Healix Spine Inc
Publication of WO2023234977A1 publication Critical patent/WO2023234977A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/3039—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove with possibility of relative movement of the rib within the groove
    • A61F2002/30398—Sliding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30471—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30515—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking wedge or block
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
    • A61F2002/30523—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts by means of meshing gear teeth
    • A61F2002/30525—Worm gears
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30556—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting thickness
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2002/4415—Joints for the spine, e.g. vertebrae, spinal discs elements of the prosthesis being arranged in a chain like manner

Definitions

  • This description relates, in general, to deployable compliant devices that can be stowed in a compact state and deployed to a larger state, and in particular, to implantable medical devices and equipment that can be stowed in a compact state for placement, and deployed to a larger state.
  • Devices and structures that can be stowed in a compact state and deployed to a larger state may be desirable in many applications.
  • One area of application of these types of devices is medical equipment. Increases in the use of minimally invasive procedures has led to a desire to reduce the insertion size and/or insertion volume of implantable devices. In some situations, decreases in size and/or volume, particularly in implantable devices, can reduce an interface area between the implantable device and the bone, resulting in greater subsidence of bone. Decreases in the insertion size of an implantable device may decrease an incision size for implanting of the device, thus decreasing surgical risk, susceptibility to infection and the like.
  • an implantable spinal device includes a plurality of support members, including a main support member and a plurality of auxiliary support members; a plurality of compliant connectors connecting adjacent support members of the plurality of support members, wherein at least one of the plurality of auxiliary support members is removably receivable in a recess formed in an adjacent support member of the plurality of support members; and an actuation mechanism configured to cause movement of the plurality of auxiliary support members relative to the main support member in response to an externally applied force.
  • the plurality of support members are movable relative to each other, between a first configuration of the implantable spinal device and a second configuration of the implantable spinal device.
  • At least one of the plurality of auxiliary support members is removably receivable within a recess formed in an adjacent support member of the plurality of support members, and the first configuration is a stowed configuration in which the at least one of the plurality of auxiliary support members is received within the recess formed in the adjacent support member.
  • the second configuration is a deployed configuration in which the at least one of the plurality of auxiliary support members is positioned outside of the recess formed in the adjacent support member, and spaced apart from the adjacent support member.
  • each of the plurality of auxiliary support members is removably receivable within a recess formed in an adjacent support member of the plurality of support members, and the first configuration is a stowed configuration in which each of the plurality of auxiliary support members is received within the recess defined in the adjacent support member of the plurality of support members.
  • the second configuration is a fully deployed configuration in which each of the plurality of auxiliary support members is positioned outside of the recess defined in the adjacent support member, spaced apart from adjacent support members.
  • the second configuration is a deployed configuration in which at least two adjacent support members of the plurality of support members are spaced apart from each other.
  • the plurality of support members are movable relative to each other, from the first configuration to the second configuration, in response to a release of force stored by the plurality of compliant connectors in the first configuration.
  • the first configuration is a fully stowed configuration and the second configuration is a fully deployed configuration
  • the plurality of support members are movable relative to each other to at least one intermediate configuration, between the first configuration and the second configuration, wherein at least one of the plurality of auxiliary support members is spaced apart from the adjacent support member of the plurality of support members in the at least one intermediate configuration.
  • the plurality of compliant connectors maintains a relative position of the plurality of support members so as to maintain the implantable spinal device in the first configuration or the second configuration.
  • the actuation mechanism includes an actuation shaft coupled in a wall portion of the main support member, wherein the actuation shaft is rotatable in response to an externally applied force; and an expansion/retraction device coupled to the actuation shaft, wherein the actuation/retraction device extends outward from the actuation shaft and is coupled to the plurality of support members.
  • the expansion/retraction device in response to rotation of the actuation shaft in a first direction, is configured to exert a force on the plurality of support members that moves the plurality of support members apart, toward the second configuration; and in response to rotation of the actuation shaft in a second direction, the expansion/retraction device is configured to exert a force on the plurality of support members that draws the plurality of support members towards each other, toward the first configuration.
  • the actuation shaft includes one of a threaded actuator, a worm gear actuator, or a rack and pinion actuator coupled to the expansion/retraction device at a distal end portion of the actuation shaft.
  • the expansion/retraction device includes a plurality of threaded rods or a plurality of nested rods coupled to the actuation shaft and extending sequentially through the plurality of support members.
  • the force exerted by the actuation mechanism on the plurality of support members in response to the rotation of the actuation shaft in the first direction augments a release of a force stored in the plurality of compliant connectors that moves the plurality of support members from the first configuration toward the second configuration.
  • the actuation mechanism comprises a linear ratchet mechanism configured to expand in at least one of a horizontal plane or a vertical plane, the linear ratchet mechanism including a pawl including a plurality of protrusions extending outward from a central portion of the pawl; and a rack, the rack including a first rack member; a second rack member; a plurality of recesses formed in at least one of the first rack member or the second rack member and configured to engage the plurality of protrusions of the pawl; and a plurality of compliant connectors connecting the first rack member and the second rack member.
  • the rack is configured to expand in the at least one of the horizontal plane or the vertical plane in response to insertion of the pawl into the rack.
  • the plurality of protrusions are arranged substantially linearly along the central portion of the pawl, and the plurality of recesses are arranged in the at least one of the first rack member or the second rack members so as to correspond to the plurality of protrusions of the pawl.
  • the plurality of recesses are configured to sequentially engage the plurality of protrusions in response to insertion of the pawl into the rack.
  • a magnitude of expansion in the at least one of the horizontal plane or the vertical plane is based on an amount of insertion of the pawl into the rack.
  • FIG. 1 A is a schematic view of compliant connectors connecting substantially rigid segments in a deployed configuration.
  • FIG. IB is a schematic view of compliant connectors connecting substantially rigid segments in a stowed configuration.
  • FIG. 2A is a schematic view of an example implantable spinal device in a deployed configuration, in accordance with implementations described herein.
  • FIG. 2B is a schematic view of the example implantable spinal device shown in FIG. 2A, in a stowed configuration.
  • FIG. 3 is a schematic view of an actuation mechanism applicable to the example implantable spinal device shown in FIGs. 2A and 2B, in accordance with implementations described herein.
  • FIGs. 4A-4D are schematic views illustrating operation of a linear ratcheting mechanism including compliant connectors, in accordance with implementations described herein.
  • Compliant mechanisms may facilitate the design of devices that can achieve two or more states.
  • the two or more states may include, for example, a relatively compact stowed state and a relatively larger deployed state.
  • Some forms of compliant mechanisms can sustain relatively large deflections and store strain energy which can be applied for actuation of the device.
  • the strained shape of the compliant mechanisms may be determined at least in part by loads, boundary conditions, material properties, geometry, and other such factors.
  • a configuration (shape, size, etc.) of a device having a relatively compact stowed volume may take into consideration the use of compliant segments, or members, or connectors based on the principles of an Euler spiral defined by a curve that exhibits a linear change of curvature along its arc length, and that lies substantially flat when a force is applied at an end portion thereof.
  • Compliant segments configured based on the Euler spiral may be used to connect rigid segments such that the rigid segments can be stowed in a relatively flat manner.
  • An implantable device in accordance with implementations described herein, may have a relatively compact stowed configuration, and a relatively larger deployed configuration.
  • the relatively compact stowed configuration and the relatively larger deployed configuration may be based on a comparison of a relative volume associated with the stowed configuration and the deployed configuration.
  • the relatively compact stowed configuration and the relatively larger deployed configuration may be based on a comparison of at least one dimension associated with the stowed configuration and the deployed configuration.
  • the relatively compact stowed configuration of the implantable device may facilitate the minimally invasive placement of the implantable device in a patient, with the implantable device being deployable to the larger configuration after placement/implant in the patient.
  • the implantable device includes a body including a plurality of segments.
  • the plurality of segments may be substantially rigid segments so as to provide for the desired support in the implanted, deployed state of the implantable device.
  • Each of the plurality of segments may be connected to an at least one adjacent segment by at least one compliant connector.
  • the at least one compliant connector is an Euler-based compliant connector (hereinafter also referred to as compliant connector(s), or Euler connector(s), or flexure(s), simply for ease of discussion).
  • compliant connector(s) an Euler-based compliant connector
  • the coupling of the plurality segments by the compliant connectors may provide for a compact arrangement of the plurality of segments in the stowed configuration.
  • the coupling of the plurality of segments by the compliant connectors may provide for separation of the plurality of segments from the stowed configuration to the deployed configuration.
  • at least some, of the plurality of segments may include a recess, or have a hollow configuration, so that an adjacent segment may be received within the recess or hollow portion of the segment in the stowed configuration.
  • all of the plurality of segments may include a recess, or have a hollow configuration, so that an adjacent segment may be received within the recess or hollow portion of the segment in the stowed configuration. This nested arrangement of the plurality of segments may further minimize an overall size and/or an overall volume of the implantable device in the stowed configuration, while providing for a desired size and/or shape and/or volume of the implantable device in the deployed configuration.
  • Compliant connectors for example in the form of Deployable Euler Spiral Connectors (DESCs) can include one or more compliant deployable flexures.
  • the one or more compliant deployable flexures can connect two segments in a device, and can lay substantially flat under strain, for example with the segments in a stowed arrangement.
  • the one or more compliant deployable flexures can be released for deployment of the segments.
  • An implantable device, in the form of a spinal implant, and a linear ratcheting system, which can employ these types of DESCs, are presented herein, simply for purposes of discussion and illustration.
  • devices that employ these types of compliant connectors may benefit from at least some motion from energy stored as the compliant connectors deform in the stowed configuration (for example, in response to a holding force). This stored energy may be released in response to release of the holding force to deploy, or to help deploy, the device. The stored energy may form a basis for actuation of the device and/or may supplement an external actuation force, thus reducing complexity associated with actuation of the device.
  • one or more example DESCs, or compliant connectors may be combined to connect two bodies. FIGs.
  • FIG. 1 A and IB illustrate two example compliant connectors, i.e., a first compliant connector 130 and a second compliant connector 140 connecting a first segment 110 and an adjacent second segment 120 of a device 100.
  • the first segement 110 and/or the second segment 120 may be substantially rigid segments.
  • the example shown in FIGs. 1A and IB includes two example compliant connectors 130, 140 arranged in parallel to connect the first segment 110 and the second segment 120, simply for purposes of discussion and illustration. In some examples, connection can be accomplished using more, or fewer, compliant connectors.
  • FIG. 1 A illustrates a deployed configuration of the first and second segments 110, 120 of the example device 100.
  • FIG. IB illustrates the first and second segments 110, 120 in the stowed configuration.
  • the first segment 110 has a hollow configuration including including a recess 150.
  • the second segment 120 is received within the recess 150 defined in the hollow interior of the adjacent first segment 110.
  • the second segment 120 is substantialy fully received within, or nested in, the first segment 110.
  • the first and second compliant connectors 130, 140 lay substantially flat. This arrangement provides for a minimized stowed size, or volume.
  • first and second compliant connectors 130, 140 span the distance between the first segment 110 and the second segment 120 in the deployed state and the stowed state, such that the first and second compliant connectors 130, 140 act to fill the space between the adjacent first and second segments 110, 120 when the device is deployed.
  • the first and second compliant connectors 130, 140 may guide the second segment 120 into the recess 150 of the first segment 110 when moving from the deployed configuration to the stowed configuration.
  • compliant connectors may be designed such that the compliant connector is at a low energy state, or an at rest state, in the deployed configuration of the device.
  • the compliant connectors store, as strain energy, the force input to move the compliant connectors into the stowed configuration.
  • the stored strain energy is released to move the compliant connectors from the stowed configuration to the deployed configuration in which the compliant connectors are at the low energy/at rest, state.
  • This stored strain energy may be supplemented by an active deployment mechanism, or actuator, to deploy the device from the stowed configuration.
  • the active deployment mechanism, or actuator may also be actuated to collapse, or stow/re-stow the device.
  • the active deployment mechanism may include, for example, a screw-in-screw mechanism, a worm screw mechanism, a rack and pinion mechanism, and other such mechanisms which may be externally actuated to cause the device to move to the fully deployed configuration.
  • Implantable medical devices such as spinal implant devices used in spinal fusion procedures, may benefit from the efficient stowing and deployment afforded by DESCs.
  • Implantable spinal disc devices may be implanted to maintain disc height and stabilize the spinal column while bone fusion occurs.
  • implantable spinal disc devices may also guide bone growth through the implanted device, allowing the bones to fuse.
  • the principles to be described herein may be applied to different configurations of implantable devices, depending, for example, on patient needs, the selected surgical approach technique and other such factors.
  • the configuration of the implantable device (size, profile and the like) may be selected based on, for example, a surgical approach to be taken, a particular operative size window available to provide for functionality, and the like.
  • two devices having smaller cross-sections may be placed into the disc space, instead of only one device (having a larger cross-section by comparison) as in anterior, lateral, and transforaminal fusion procedures.
  • a larger implant area can provide a larger region of spinal load transfer (e.g., more stability and lower stress).
  • this larger region of spinal load transfer typically relies on the use of a larger implantable device (and a larger incision for insertion of the larger implantable device) and/or multiple smaller implantable devices.
  • the incision area represents an area of potential infection
  • a larger incision corresponds to increased potential for infection and increased healing time.
  • the size of the incision is driven at least in part by the size and/or the profile of the equipment used for the insertion of the implantable device, and the size and/or the profile of the implantable device itself. While it may be desirable to make use of the smallest possible spinal implantable device to enable the smallest possible incision, in some situations the use of a small implantable device can lead to subsidence. Subsidence is the sinking of the implantable device into the surrounding bone due to differences in mechanical stiffness of the implantable device in comparison with the supporting bone (i.e., stress overload of the bone).
  • An implantable device having a relatively small insertion size and/or profile, and that is deployable to a larger deployed configuration may provide for smaller incision areas while also providing the necessary support area when implanted in the deployed configuration.
  • Compliant mechanisms such as the DESCs described above, may be used in implantable devices, for example in implantable spinal devices, to mimic the natural motion and stiffness of the spine.
  • deployable implantable devices may address the contradictory desires for a small incision and a large implantable device to provide stability and reduce subsidence. This may be further improved by the use of an implantable device including an arrangement of support members connected by compliant connectors.
  • This may be further improved with an arrangement in which the support members connected by the compliant connectors may be received within a hollow or recess formed in an adjacent support member when in the stowed configuration, as described above with respect to FIGs. 1A and IB. This may provide for an implantable device having an even more compact stowed configuration, and an even larger deployed configuration.
  • FIGs. 2A and 2B are plan views of an example implantable compliant spinal device 200, in accordance with implementations described herein.
  • the example device 200 is in the deployed configuration in FIG. 2A, and in the stowed configuration in FIG. 2B.
  • the example device 200 shown in FIGs. 2 A and 2B includes five support members, each connected to an adjacent support member by three compliant connectors (such as the DESCs described above), simply for purposes of discussion and illustration.
  • the principles to be described herein may be applied to other implantable compliant spinal devices having more, or fewer support members and/or more or fewer compliant connectors, arranged and/or sized and/or shaped differently.
  • the example device 200 includes a main support member 210, or a primary support member 210.
  • the main support member 210 has a hollow configuration.
  • the main support member includes a first recess 215 A defined in a first side portion thereof, and a second recess 215B formed in a second side portion thereof.
  • a wall portion 212 of the main support member 210 may be positioned between the first recess 215 A and the second recess 215B so as to separate and partially define the first recess 215 A and the second recess 215B.
  • the example device 200 includes a plurality of auxiliary support members coupled to the main support member 210.
  • the plurality of auxiliary support members includes intermediate support members 220 and outer support members 230.
  • a first intermediate support member 220A is positioned corresponding to the first side portion of the main support member 210.
  • a second intermediate support member 220B positioned corresponding to the second side portion of the main support member 210.
  • the first intermediate support member 220A has a hollow configuration including a recess 225 A defined in a side portion thereof.
  • the second intermediate support member 220B has a hollow configuration including a recess 225B defined in a side portion thereof.
  • the example device 200 includes a first outer support member 230 A positioned corresponding to the recess 225A defined in the first intermediate support member 220 A.
  • the example device 200 includes a second outer support member 230B positioned corresponding to the recess 225B defined in the second intermediate support member 220B.
  • a set of compliant connectors 240 connects the first intermediate support member 220A to the main support member 210.
  • a set of compliant connectors 240 connects the second intermediate support member 220B to the main support member 210.
  • a set of compliant connectors 240 connects the first outer support member 230 A to the first intermediate support member 220A.
  • a set of compliant connectors 240 connects the second outer support member 230B to the second intermediate support member 220B.
  • each adjacent pair of support members is connected by three compliant connectors, simply for ease of discussion and illustration.
  • Adjacent support members of the example device 200 may be connected by more, or fewer, compliant connectors arranged in parallel as shown or arranged differently.
  • the first intermediate support member 220A is received in the first recess 215 A defined in the main support member 210, and the second intermediate support member 220B is received in the second recess 215B defined in the main support member 210.
  • the first outer support member 230A is received in the recess 225A defined in the first intermediate support member 220A, and the second outer support member 230B is received in the recess 225B defined in the second intermediate support member 220B.
  • the intermediate support members 220 are substantially fully received within, or nested in, the main support member 210.
  • the outer support members 230 are substantially fully receiveied within, or nested in, the intermediate supoprt members 220.
  • the compliant connectors 240 lay substantially flat. This arrangement provides for a minimized stowed size, or volume, or profile, or configuration of the example device 200.
  • the pluraltiy of support members are selectively movable relative to each other (i.e., movable relative to each other between the stowed configuration to the deployed configuration) such that, in the deployed configuration, the plurality of support members are spaced apart from each other, with the compliant connectors 240 extending between adjacent support members.
  • the compliant connectors 240 may span the distance between adjacent support members in the deployed state, such that the compliant connectors 240 act to substantially fill the space between the adjacent support members when the device 200 is actuated from the stowed configuation shown in FIG. 2B to the deployed configuration shown in FIG. 2A.
  • the compliant connectors 240 may help guide the movement of the support members into the respective recesses when moving from the deployed configuration to the stowed configuration.
  • auxiliary support members including the intermediate support members 220 and the outer support members 230
  • Support members of an implantable compliant spinal device may include more or fewer auxiliary support members, and/or different arrangements of the main support member and the auxiliary support members that are not necessarily symmetrical.
  • some of the support members may be rigid, or substantially rigid.
  • all of the support members may be rigid, or substantially rigid.
  • the nested configuration of the support members 210, 220, 230 in the stowed configuration of the example device 200 provides for a minimally compact arrangement of the support members 210, 220, 230, and a minimally compact overall profile of the device 200. This may provide for a relatively small insertion size for the implantable spinal device 200, and a correspondingly relatively small incision for insertion, while retaining the ability to deploy the device 200 to a relatively large size after insertion.
  • the example implantable compliant spinal device 200 shown in FIGs. 2A and 2B has a substantially oval shape, or profile, or configuration in the deployed configuration, simply for purposes of discussion and illustration.
  • the principles described herein may be applied to implantable devices having other shapes, or profiles, or configurations.
  • implantable devices having different dimensions, different degrees of lordosis and the like may be provided based on the configuration and/or number and/or arrangement of the pluralilty of support members of the implantable device, number and/or arrangment and/or size of the compliant connectors, and other such factors, so as to re-establish correct anatomical aligment of the spine upon deployment of the device.
  • the example device 200 may include an active actuation mechanism that facilitates the transition of the example device 200 between the stowed configuration and the deployed configuration.
  • an active actuation mechanism may facilitate the transition of the example device 200 to any number of intermediate configurations between a fully stowed configuration and a fully deployed configurations.
  • the active actuation mechanism may supplement any movement of intermediate and/or outer support members 220, 230 due to the energy stored in/released by the compliant connectors 240.
  • the actuation mechanism may include an active deployment/retraction mechanism.
  • the active deployment/retraction mechanism may include, for example, a threaded actuation mechanism such as screw, a worm gear arrangement, a rack and pinion arrangement, and/or other such mechanisms that would facilitate the movement of the support members 210, 220, 230 between the stowed configuration and the deployed configuration.
  • the actuation mechanism may provide for the controlled deployment of the device 200.
  • the actuation mechanism may allow for the controlled movement of the auxiliary support members 220, 230 of the device 200 relative to the main support member 210 to a size and/or profile suitable for a particular surgical situation. This may include, for example, deploying the device 200 to any number of intermediate configurations between the fully stowed configuration shown in FIG.
  • This may include, for example, allowing for the strain energy of the compliant connectors 240 to partially deploy the device 200 after insertion, and then actuating the actuation mechanism to further deploy the device 200 (to an intermediate configuration, or to the fully deployed configuration).
  • the actuation mechanism may be operated in a first mode, for example, a deploying mode, in which the actuation mechanism acts to deploy, or further deploy the device 200.
  • the actuation mechanism may operate in a second mode, for example, a stowing mode, in which the actuation mechanism acts to collapse the device 200, or move the components of the device 200 from the deployed configuration toward the stowed configuration.
  • it may be beneficial to be able to collapse the device 200 from the deployed configuration, for example fully, or partially, or incrementally collapse the device 200. This may allow for adjustment and repositioning after insertion, and then redeployment of the device 200. This may also allow for removal of the device 200 in the smaller, more compact stowed configuration.
  • FIG. 3 is a plan view of the example implantable compliant spinal device 200 including an example actuation mechanism 300, in accordance with implementations described herein.
  • the example actuation mechanism 300 may provide for a controlled deployment of the example device 200 and/or for a controlled stowing, or collapse, of the example device 200.
  • the actuation mechanism 300 may include an actuation device 310. Actuation of the actuation device 310 in response to an external input (for example, actuation by a surgeon) may cause movement of the auxiliary support members, i.e., the intermediate support members 220 and/or the outer support members 230 of the device 200, between the stowed configuration and the deployed configuration, and any number of intermediate configurations between the stowed configuration and the deployed configuration.
  • the actuation mechanism 300 may include an expansion/retraction device 320 coupled to the actuation device 310.
  • the expansion/retraction device 320 may facilitate and guide movement of the intermediate support member 220 and the outer support members 230 relative to the main support member 210 of the example device 200 in response to actuation of the actuation device 310.
  • the actuation device 310 may include, for example, a threaded actuator such as screw that may be actuated through manipulation with an external tool, a worm gear arrangement, a rack and pinion arrangement, and/or other such mechanisms that would facilitate the movement of the support members 210, 220, 230 to various positions between the stowed configuration and the deployed configuration.
  • the expansion/retraction device 320 may include retractor lines that are coupled to the wall portion 212 of the main support member 210 and extend to, for example, sequentially to, the outer support members 230 A, 230B.
  • the expansion/retraction device 320 may include rods, for example, nesting rods that are coupled to the wall portion 212 of the main support member 210 extend to, for example, sequentially to, the outer support members 230 A, 230B.
  • the expansion/retraction device 320 may include threaded rods that are coupled to the wall portion 212 of the main support member 210 and extend to, for example, sequentially to the outer support members 230 A, 230B.
  • the expansion/retraction device 320 may include other types of mechanisms that can facilitate and guide the movement of the auxiliary support members, i.e., the intermediate support members 220 and the outer support members 230 relative to the main support member 210, in deploying and/or collapsing the device 200.
  • the actuation device 310 includes an actuation shaft 312 coupled in the wall portion 212 of the main support member 210.
  • a screw head 314 at an end portion, for example, a distal end portion, of the actuation shaft 312 may provide for bi-directional movement of the expansion/retraction device 320.
  • an orientation of the expansion/retraction device 320 (and corresponding expanding/retracting movement) may be substantially orthogonal to the orientation of the actuation shaft 312.
  • Rotation of the screw head 314 (for example, through manipulation with an external tool coupled to the actuation shaft 312 or other such approach) in a first direction R1 may provide for movement of expansion/retraction device 320 in a first direction.
  • rotation of the screw head 314 in the first direction R1 may cause the intermediate support members 220 and/or the outer support members 230 to move in the direction illustrated by the arrow LI, i.e., away from the main support member 210, to deploy, or further deploy the device 200.
  • Rotation of the screw head 314 in a second direction R2 may provide for movement of the expansion/retraction device 320 in a second direction. That is, rotation of the screw head 314 in the second direction R2 may cause the intermediate support members 230 and/or the outer support members230 to move in the direction illustrated by the arrow L2, i.e., toward the main support member 210, to collapse, or stow the device 200.
  • the actuation mechanism 300 including the active actuation device 310 as described above may provide for proper placement and sizing of the device 200.
  • the actuation mechanism 300 including the active actuation device may allow for intermediate configurations of the device 200 (i.e., configurations between the fully stowed configuration shown ion FIG. 2B and the fully deployed configuration shown in FIG. 2A) to be selected and maintained.
  • FIGs. 4A-4D illustrate an example linear ratchet mechanism 400 including compliant connectors such as, for example, the DESCs described above.
  • This linear ratchet mechanism 400 may be used to expand an implantable device, such as the example compliant spinal device 200 described above with respect to FIGs. 2A-3B.
  • expansion may achieved in both a horizontal direction and a vertical direction. Expansion of the linear ratchet mechanism 400 in both a horizontal plane (for example, relative to a central portion of the linear ratchet mechanism 400) and a vertical plane (for example, relative to the central portion of the linear ratchet mechanism 400) may provide for resistance to compressive forces in order to withstand vertical loading forces.
  • the example linear ratchet mechanism 400 shown in FIGs. 4A-4D includes a pawl 410 shown in FIG. 4 A that is insertable into a rack 420 shown in FIG. 4B.
  • the example pawl 410 includes a first pawl section 411 defining a first plurality of protrusions 415 A, or teeth 415 A.
  • the first plurality of protrusions 415 A extend outward, for example radially outward, from a central portion of the pawl 410.
  • the example pawl 410 includes a second pawl section 412 defining a second plurality of protrusions 415B, or teeth 415B.
  • the second plurality of protrusions 415B extend outward, for example radially outward, from a central portion of the pawl 410.
  • the example rack 420 includes a first rack member 421 coupled to a second rack member 422 by a plurality of compliant connectors 424, such as the DESCs described above or other such compliant connector.
  • the first rack member 421 includes a first plurality of recesses 425A configured to selectively engage with the first plurality of protrusions 415 A of the first pawl section 411 as the pawl 410 is inserted into the rack 420.
  • the second rack member 422 includes a second plurality of recesses 425B configured to selectively engage with the second plurality of protrusions 415B of the second pawl section 412 as the pawl 410 is inserted into the rack 420.
  • Connection of the first rack member 421 and the second rack member 422 by the compliant connectors 424 may facilitate the ratcheting action as the pawl 410 is inserted into the rack 420.
  • insertion of the substantially rigid pawl 410 into the rack 420 including the first rack member 421 and the second rack member 422 coupled by the compliant connectors 424 causes expansion of the ratchet mechanism 400, as shown in FIG. 4C.
  • Expansion of the rachet mechanism 400 in this manner may provide for vertical and/or horizontal expansion of, for example, an implantable device that has been placed, including, for example, the implantable compliant spinal device 200 described above.
  • the ratchet mechanism 400 may function as a standalone implantable expansion device. Such expansion of the ratchet mechanism 400, used either alone or in combination with an implantable device, may also provide and/or enhance the ability to withstand active compression in the vertical and/or horizontal axes.
  • a magnitude of expansion of the linear ratcheting mechanism 400 may be based on an amount or a degree of insertion of the pawl 410 into the rack 420.
  • a force at which the ratcheting action of the linear ratcheting mechanism 400 is actuated can be adjusted, for example to meet the needs of a particular surgical condition in which the ratcheting mechanism 400 may be beneficial in expanding the implanted device, horizontally and/or vertically, to a desired configuration.
  • the first and second pawl sections 411,412 and the first and second plurality of protrusions 415 A, 415B are substantially symmetrically arranged about a longitudinal centerline of the ratcheting mechanism 400, and the plurality of recesses 425A, 425B of the first and second rack members 421, 422 are substantially symmetrically arranged about the longitudinal centerline of the ratcheting mechanism 400 in a corresponding manner so as to respectively engage the plurality of protrusions 415 A, 415B as the pawl 410 is inserted into the rack 420.
  • the protrusions 415 A, 415B (and the corresponding recesses 425 A, 425B) are substantially similarly shaped and/or sized, simply for purposes of discussion and illustration.
  • the protrusions 415 A, 415B and the corresponding recesses 425A, 425B may have other shapes and/or configurations.
  • the plurality of protrusions 415 A, 415B and the corresponding plurality of recesses 425A, 425B may change size and/or shape along the length of the pawl 410/rack 420 so as to provide a tapering of the ratcheting mechanism 400 as the pawl 410 is inserted into the rack 420.
  • the pawl 410 and the rack 420 may include more, or fewer protrusions 415 A, 415B and more, or fewer, recesses 425A, 425B, shaped and/or arranged differently than the examples shown in FIGs. 4A- 4D.
  • a size and/or a shape and/or a profile of the protrusions 415 A, 415B may be varied so as to produce the desired expansion. For example, a size and/or a profile of at least some of the protrusions 415 A, 415B may be increased, allowing the ratchet mechanism 400 to deliver a greater level of expansion.
  • spatially relative terms such as “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature in relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 70 degrees or at other orientations) and the spatially relative descriptors used herein may be interpreted accordingly.
  • Example embodiments of the concepts are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of example embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, example embodiments of the described concepts should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. Accordingly, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments.

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  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
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Abstract

Des connecteurs souples peuvent couvrir des espaces entre des éléments de support d'un dispositif vertébral implantable déployable dans un mécanisme, et peuvent reposer à plat lorsqu'ils sont sous contrainte dans une position rangée dans laquelle chaque élément de support est reçu dans une partie creuse ou un évidement défini dans un élément de support adjacent. Une taille et/ou un profil minimalement compacts du dispositif vertébral implantable déployable peuvent être obtenus en emboîtant des éléments de support adjacents de cette manière, ce qui maintient encore une taille relativement grande dans la configuration déployée du dispositif.
PCT/US2022/081367 2022-05-31 2022-12-12 Dispositif implantable déployable et/ou repliable Ceased WO2023234977A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070255415A1 (en) * 2006-05-01 2007-11-01 Sdgi Holdings, Inc. Expandable intervertebral spacers and methods of use
US20080058930A1 (en) * 2006-07-21 2008-03-06 Edie Jason A Implant with nested members and methods of use
WO2008103466A1 (fr) * 2007-02-22 2008-08-28 Kyphon Sarl Dispositifs expansibles pour positionnement dans un os ou d'autres parties du corps et procédés d'utilisation de tels dispositifs
US20120209386A1 (en) * 2011-02-14 2012-08-16 Medicinelodge, Inc. Dba Imds Co-Innovation Expandable intervertebral implants and instruments
US20190133784A1 (en) * 2017-09-29 2019-05-09 Mirus Llc Expandable Interbody Devices
US20200113709A1 (en) * 2018-10-15 2020-04-16 Jui-Yang HSIEH Support element for implantation into or between subject's bones, and implant component and implant system containing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070255415A1 (en) * 2006-05-01 2007-11-01 Sdgi Holdings, Inc. Expandable intervertebral spacers and methods of use
US20080058930A1 (en) * 2006-07-21 2008-03-06 Edie Jason A Implant with nested members and methods of use
WO2008103466A1 (fr) * 2007-02-22 2008-08-28 Kyphon Sarl Dispositifs expansibles pour positionnement dans un os ou d'autres parties du corps et procédés d'utilisation de tels dispositifs
US20120209386A1 (en) * 2011-02-14 2012-08-16 Medicinelodge, Inc. Dba Imds Co-Innovation Expandable intervertebral implants and instruments
US20190133784A1 (en) * 2017-09-29 2019-05-09 Mirus Llc Expandable Interbody Devices
US20200113709A1 (en) * 2018-10-15 2020-04-16 Jui-Yang HSIEH Support element for implantation into or between subject's bones, and implant component and implant system containing the same

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