WO2002032345A2 - Dispositifs d'ancrage intra-osseux du tissu mou dans l'os et procede d'utilisation de ces dispositifs - Google Patents

Dispositifs d'ancrage intra-osseux du tissu mou dans l'os et procede d'utilisation de ces dispositifs Download PDF

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Publication number
WO2002032345A2
WO2002032345A2 PCT/US2001/031693 US0131693W WO0232345A2 WO 2002032345 A2 WO2002032345 A2 WO 2002032345A2 US 0131693 W US0131693 W US 0131693W WO 0232345 A2 WO0232345 A2 WO 0232345A2
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WO
WIPO (PCT)
Prior art keywords
anchor
soft tissue
bone
exterior
exterior surface
Prior art date
Application number
PCT/US2001/031693
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English (en)
Other versions
WO2002032345A9 (fr
WO2002032345A3 (fr
Inventor
Daniel Jacobs
Michael Wei
Original Assignee
Coapt Systems, 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 Coapt Systems, Inc. filed Critical Coapt Systems, Inc.
Priority to AU2001296789A priority Critical patent/AU2001296789A1/en
Priority to EP01977689A priority patent/EP1326557A2/fr
Publication of WO2002032345A2 publication Critical patent/WO2002032345A2/fr
Publication of WO2002032345A3 publication Critical patent/WO2002032345A3/fr
Publication of WO2002032345A9 publication Critical patent/WO2002032345A9/fr

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    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0409—Instruments for applying suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0412—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having anchoring barbs or pins extending outwardly from suture anchor body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0414—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having a suture-receiving opening, e.g. lateral opening
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0427—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having anchoring barbs or pins extending outwardly from the anchor body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0427—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having anchoring barbs or pins extending outwardly from the anchor body
    • A61B2017/0437—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having anchoring barbs or pins extending outwardly from the anchor body the barbs being resilient or spring-like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0438—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors slotted, i.e. having a longitudinal slot for enhancing their elasticity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/044—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors with a threaded shaft, e.g. screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0445—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors cannulated, e.g. with a longitudinal through-hole for passage of an instrument
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0817—Structure of the anchor
    • A61F2002/0823—Modular anchors comprising a plurality of separate parts
    • A61F2002/0835—Modular anchors comprising a plurality of separate parts with deformation of anchor parts, e.g. expansion of dowel by 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0847—Mode of fixation of anchor to tendon or ligament
    • A61F2002/0852—Fixation of a loop or U-turn, e.g. eyelets, anchor having multiple holes
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0847—Mode of fixation of anchor to tendon or ligament
    • A61F2002/0858—Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0847—Mode of fixation of anchor to tendon or ligament
    • A61F2002/0864—Fixation of tendon or ligament between anchor elements, e.g. by additional screws in the anchor, anchor crimped around tendon
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0847—Mode of fixation of anchor to tendon or ligament
    • A61F2002/087—Anchor integrated into tendons, e.g. bone blocks, integrated rings
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0876—Position of anchor in respect to the bone
    • A61F2002/0882—Anchor in or on top of a bone tunnel, i.e. a hole running through the entire bone
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • A61F2002/0876—Position of anchor in respect to the bone
    • A61F2002/0888—Anchor in or on a blind hole or on the bone surface without formation of a tunnel

Definitions

  • This invention is in the field of surgery. More particularly, it relates to an intraosseous anchor for securing soft tissue, such as a tendon or ligament, to a cavity formed in a bone.
  • the device itself preferably is formed in such a way that the soft tissue is pressed against the bone by the device to accelerate growth by the soft tissue and attachment to the bone.
  • the device preferably utilizes anchor barbs on its exterior to grasp the soft tissue under conditions of improved distribution of tension and with a minimal disruption of the soft tissue-bone interface and the allied nutrient supplies.
  • the invention also includes combinations of the device with the soft tissue graft and various growth factors. Processes of using the inventive device are also a portion of the invention.
  • Typical of such devices used to press one end of a flexible member against the interior wall of a bone cavity include U.S. Patent Number 6,123,71 1 , to Winters, U.S. Patent 5,454,81 1, to Hubner; U.S. Patent 5,425,767, to Steininger et al.; and U.S. Patent 5,062,843, to Mahony. No cited references show the devices nor the procedures described herein.
  • this invention relates to an intra-osseous soft tissue-to-bone anchor for contacting soft tissue with an opening in a bone.
  • the device is made up of a _ ⁇ longitudinal fixture having a distal and a proximal end and an exterior surface.
  • the proximal end preferably has an opening (generally integral with the exterior surface cavity discussed just below) for passage of the soft tissue graft proximally of the device.
  • the distal end preferably is configured for entry into that bone opening.
  • the exterior surface preferably has at least one external cavity containing anchor barbs to graspingly accept the soft tissue and they are sized and oriented to press the soft tissue within the bone opening 10 against the bone wall.
  • the exterior surface is also adapted for anchoring the anchor in the opening.
  • the exterior surface cavity preferably is longitudinal along the body of the device. There may be more than one cavity. Desirably, at least one diametric passageway extends between or among the various multiple exterior cavities for passage of soft tissue.
  • the distal end generally is adapted for entering the bone opening by, e.g., chamfering the end or providing a distal end opening.
  • the exterior surface may be adapted for anchoring in the bone opening via placement of, e.g., one or more circumferential ridges or knob-like protuberances on the exterior surface or by use of movable protuberances perhaps which are movable and rotate Q into the exterior surface from the interior.
  • the exterior surface itself is generally cylindrical (allowing, of course for the exterior cavities).
  • the surface may be threaded or have a cut from one end to the other allowing a snap fit into a generally cylindrical shape from a generally spiral shape.
  • the interior surface may include soft tissue barbs.
  • the anchor may be of a shape which is notched to provide a "splay" at the proximal end and provide tension against the bone interior wall.
  • the device may be formed in two parts: a saddle part making up a portion of the exterior surface and having an inner surface and a rail part which slides into the saddle part and forms the external cavities.
  • the exterior surface may be a folded "V having a distal fold, an exterior wall, and an opening through said exterior wall near the fold or it may also be a generally rectangular sheet having at least one passageway between the proximal end and the distal
  • the anchor structure may have extendable spring wings or arms which extend into the softer bone areas beneath the cortical plate.
  • the proximal end may be made up of multiple longitudinal spring arms splayed at (or making up) the proximal 0 end.
  • the inventive anchor is preferably made of at least on biodegradable polymer or copolymer, such as polyglycolide, polylactide, poly- ⁇ -caprolactone, polydiaxanone, polyglyconate, polylactide-co-glycolide, their mixtures, alloys, and random and block copolymers.
  • biodegradable polymer or copolymer such as polyglycolide, polylactide, poly- ⁇ -caprolactone, polydiaxanone, polyglyconate, polylactide-co-glycolide, their mixtures, alloys, and random and block copolymers.
  • the various devices may further be a combination of the soft tissue graft and an osteogenic growth factor.
  • a spiral intra-osseous soft tissue-to- bone anchor made up of a spirally wound sheet having a longitudinal axis, an interior surface for graspingly accepting a soft tissue, e.g., a tendon and ligament, along that axis ( . when the spirally wound sheet is collapsed around the soft tissue.
  • the exterior surface is adapted, by integral or formed grooving or by radial protruberances to anchor to the bone opening.
  • the spirally wound sheet may be foraminous or not.
  • the interior surface may be grooved or have anchor barbs to grasp and hold the soft tissue graft in the anchor.
  • this variation may include the soft tissue graft and an osteogenic growth 5 factor.
  • Figures 1 A, IB, 1C show respectively perspective and cross-sectional views of one variation of the inventive anchor device having external cavities for pressing soft tissue against the surface of a bone cavity.
  • Figure 2 A shows another variation of the inventive device which uses a spring pressure to maintain placement of the device within the bone cavity.
  • Figure 2B shows steps of installing the device of Figure 2A in a bone cavity.
  • Figure 3 shows another variation of the inventive anchor device.
  • Figures 4A and 4B show respectively a side view and end views of the variations of the inventive anchor device in which the barbs mechanically expand from the interior of the device into the bone.
  • Figure 4C shows manner in which the device may be molded in a single piece and assembled.
  • Figure 4D shows the introduction of drive pin into the device of Figures 4A, 4B, and 4C to mechanically expand the barbs.
  • Figures 5 A, 5B, and 5C show, respectively, perspective and end views of the device made according to the invention.
  • Figure 6 A shows a perspective view of a two-piece variation of the inventive anchor device.
  • Figure 6B shows an in view of the assembled Figure 6A device.
  • Figures 7A and 7B show, respectively, side and end views of a variation of the device having exterior soft tissue cavities and exterior spring catches for anchoring the device within the bone.
  • Figures 8 A and 8B show, respectively, side and end views of a bone anchor made according to the invention having no interior cavities.
  • Figures 9A and 9B show, respectively, side and end views of a screw-like device having exterior soft tissue cavities.
  • Figures 10A and 10B show, respectively, side and end views of a snap-fit spiral realm device for pressing soft tissue into bone cavity.
  • Figures 1 1 A and 1 IB show, respectively, side and end views of a snap-fit device in which both the interior and exterior of the device are equipped with barbs to hold soft tissue in place.
  • Figures 12A and 12B show, respectively, cross-sectional and end views of a conical device having soft tissue barbs on the interior.
  • Figures 13 A, 13B, 13C, and 13D show respectively a top view, side view, end view, and a view as-installed in a slot-shaped cavity in a bone.
  • Figures 14A and 14B show respectively top views and side views of a device made according to the invention having exterior and interior cavities equipped with soft tissue barbs for retaining soft tissue in the device. This variation is also installed in a slot- shaped cavity in a bone.
  • Figures 15A and 15B show respectively a perspective view and as-installed, cross- sectional view of a device made according to the invention.
  • This variation is a foraminous device which utilizes a groove on the interior to grasp the soft tissue and a groove on the exterior to secure the assembly to the bone.
  • Figure 16 shows a variation of the device shown in Figures 15A and 15B having interior tissue-grasping tines and exterior protuberances for securing the device to the bone.
  • Figure 17 shows a variation of the device depicted in Figures 15A and 15B which is not foraminous.
  • Figure 18 shows a variation of the device shown in Figure 15A having alternative for grasping the bone and the soft tissue.
  • Figures 19A, 19B, and 19C show, respectively, a perspective view, a cross- sectional view, and as-installed view of device which grasps soft tissue using an interior spring-like member.
  • Figures 20A, 20B, and 20C show, respectively, a perspective view, side view (during installation), and a side view (after installation) of variation of the invention device which snap-fits into a bone cavity.
  • Figures 21 A, 2 IB, and 21C show, respectively, side view of variation of the inventive device during installation, after installation, and a side, cross-sectional view after installation.
  • this invention is an intraosseous anchor for securely attaching soft tissue such as a tendon or ligament to a cavity specifically produced by surgeon for holding the inventive device.
  • the device is fashioned in such a way that it holds the soft tissue against the
  • the inventive device and the soft tissue be installed in a single step.
  • the inventive device and the soft tissue be installed in a single step.
  • devices will entail external or internal cavities which are situated in such a way that the device will grasp the soft tissue using some type of soft tissue attachment points.
  • tines will refer both to points which are either sharp, i.e., able to separate tissue at chosen use
  • attachment points may also be
  • barbs when those points have retaining point positioned in several of the figures discussed below.
  • the shape of the soft tissue points or barbs may be varied depending upon the size
  • tines or barbs may canted or erect.
  • Various tines or barbs may canted or erect.
  • shapes include those approximating thorns, arrowheads, hooks, nails, sharpened pencils,
  • attachment points may be canted in a selected direction or may be radial
  • biodegradable polymers as materials of construction in our devices.
  • esters, and amides are suitable for use as biodegradable materials. Specific examples of a
  • biodegradable polymers are polyglycolide, polylactide, poly- ⁇ -caprolactone,
  • polydioxanone polyglyconate, copolymers of polylactide and polyglycolide, and the
  • the backing material might be produced from a
  • soft tissue herein is normally meant tendons or ligaments. This is so simply
  • muscle fibers may be included.
  • the soft tissue may be autologous material, allograft material,
  • Patent No. 6,023,727 to Vacanti et al. Harvested or donor soft tissue is an obvious
  • each of the devices described herein as of the type is installed as a combination of the inventive device and the soft tissue graft.
  • This invention includes combinations of the soft tissue graft and the inventive anchor.
  • the invention includes independent combinations of the inventive anchor,
  • Bone healing is an intricate biologic process in which the bone's structural integrity is restored through the regeneration of bone.
  • BMP bone morphogenetic protein
  • TGFB 0 transforming growth factor beta
  • PDGF platelet derived growth factor
  • FGF fibroblast growth factor
  • ILGF insulin-like growth factor
  • the noted growth factors may be introduced variously onto the surface of the
  • anchors into the interior of the inventive anchors, or to the soft tissue graft, particularly the soft tissue graft portion that is introduced into the cavity formed within the bone.
  • FIGs 1A shows the first variation of inventive anchor (100).
  • Anchor (100) has a distal end (102), a proximal end (104), and an exterior surface which has at least one cavity (106) with soft tissue barbs (108).
  • the exterior cavity (106) may be repeated, e.g., (1 10), on other parts of the device (100).
  • the exterior cavities (106), (110) are sized in such a way that the barbs (108) press into the soft tissue and in turn, the back walls of the cavities (106), (110) press the soft tissue against the bony wall into which device (100) is placed. It is common in these types of orthopedic procedures to drill a hole of a specific size into the bone suitable for accepting the device. The device is introduced via simple pressure or by impact.
  • FIG. 1 A Also found in Figure 1 A is a transverse passageway (1 12) which passes (as shown in Figure IB) from exterior cavity (106) to exterior cavity (1 10).
  • the soft tissue as should be apparent, is usually long and passes along one of the exterior cavities (106), (1 10) through passageway (1 12) and returns towards proximal end (104) via the remaining exterior cavity (106), (1 10).
  • the shaft of the longitudinal fixture forming the anchor (100) may also have a variety of protuberances (1 14) placed along the shaft.
  • the distal end (102) of device (100) is adapted for entering the cavity formed in the bone.
  • Such adaptation may include chamfering, e.g., via the chamfer (1 16) as shown in Figure 1A and, perhaps with the distal passageway (1 18) also shown in Figure 1A.
  • Distal passageway (118) may be generally for pressure release of fluids during introduction of the device (100) into the chosen or crafted bone cavity. It also allows nutrient passage to the soft tissue during its traverse through passageway (112).
  • Figure 2A shows another variation of the inventive device (130).
  • This variation of the invention relies, in addition to the exterior protuberances or barbs (132) upon an included spring action between the halves (134), (136) of the device.
  • the slot (138) between halves (134), (136) allows such a spring action as is shown in Figure 2B.
  • the proximal end (140) of the device includes an opening (142) which is a portion of the exterior cavity (144).
  • Second cavity (146) is also found in the variation (130) shown in Figure 2A.
  • Figure 2B shows the steps of introducing the device shown in Figure 2A into a cavity (148) in bone (150).
  • the inventive device (130) has a certain amount of "splay". This splay provides (depending on the composition of the material, of course) some definite amount of overall springiness which is used to secure the device (130) in the hole (148) when as shown in step 2.
  • the pathway of soft tissue (152) through the device is also shown in step one of Figure 2B.
  • the soft tissues wends its way through passageway (154), through slot (138), through passageway (156), along the partial longitudinal cavity (146), and back through passageway (158) into slot (138). In this way, the soft tissue is held both in the external cavity (142) through which it protrudes out of the bone through opening (144) and along passageway (146).
  • FIG. 3 shows another variation of the inventive anchor (160), again utilizing a slot (162) which provides springiness between the halves (164), (166) of device (160).
  • the external protuberance is (168) are ridges which are generally circumferential around non-cavity portions of the exterior surface of the device (160).
  • This variation (160) similarly has soft tissue barbs (170) and a cross passageway (172).
  • the opposite face of the device (160) shown in Figure 3 may or may not have an exterior cavity as is shown in the view of Figure 3.
  • the distal portion of the device is also adapted, perhaps by a chamfer (176) and a distal passageway (178) to allow introduction of the device (160) into a chosen bone opening. It should be apparent that the opening (178) is placed there to prevent "pressure lock” during installation and passage of nutrients to the soft tissue in passageway (172), but it should be noted normally it would pass all the way into and intersect into passageway (172). It need not, however, do so.
  • Figure 4A shows a variation (180) of the device in which the radial protuberance is (182) mechanically deployed using a pin (184) (as shown in Figure 4D) after the device (180) and its attendant soft tissue are placed in the crafted hole in the boneface.
  • this variation (180) may include a cross passageway (184), one or more exterior cavities (186) with soft tissue barbs (188).
  • the distal end (190) may also include a chamfer (192) and a longitudinal, distal passageway (194).
  • the moveable bone barbs or protuberances (182) are considered a portion of the external surface of this device.
  • Figure 4B shows an end view of a device (180) displaying the moveable radial protuberances (182) and, in this case, two external cavities (186).
  • two external cavities (186) are shown here, the number of external cavities may only be a single one or may be a multiplicity, e.g., two, three, four or more.
  • the seam (188) allowing the device to be molded in a single piece is seen.
  • FIG 4C shows device (180) in an "as molded" condition.
  • this device may be molded in a single piece.
  • the rotating barbs (182) are hinged so that as they rotate towards the exterior device upon the impetus of pin (184) as shown in Figure 4D, they dig into the interior of the crafted bone hole and secure device (180) in place.
  • Figure 5 A shows another variation of the inventive device (190) having four spring arms, two spring arms (192), (194) having exterior cavities (196) for soft tissue passage.
  • the other two spring arms (198) and (200) include protuberances (202) for engagement with the interior of the bone hole.
  • the exterior cavities (196) include soft tissue barbs (204).
  • Figure 5B shows the splay of the various spring arms (198), (200) (with protuberances (202)) and spring arms (192), (194) with external cavities (196).
  • Figure 5C shows device (190) after installation in a bone hole (without soft tissue or, indeed, the bone) to show how the various spring arms are pulled together when installed in a hole in the bone.
  • Figure 6 A shows a two part device (210) made up of a saddle section (212) and a rail portion (214).
  • the saddle portion (212) may include the external protuberances (216) as are described elsewhere and a distal end (218) having a chamfer 220 and an optional distal passageway (222) (not seen in Figure 6A).
  • the saddle portion (212) includes slots (224) to allow engaging keys (226) to slide down to engagement notches (228) to secure locking between rail portion (214) and saddle portion (212).
  • the as assembled includes one or more cavities (228) having at least one proximal opening to allow passage of the included soft tissue proximally of the device.
  • the external cavities (228) preferably having soft tissue barbs (230) included therein.
  • Figure 6B shows an end view of the assembled device having rail portion (214) within saddle section (212). The external protuberances (216) for holding the device (210) within the bone cavity is also shown.
  • the slot (218) as shown in Figure 6A is also seen in Figure 6B.
  • Figure 7A shows a side view of a variation of the device (250) having two separate methods of providing springing to the device (250).
  • the device has extensions (252) which are preferably made of spring metal such as a biocompatible stainless steel, or preferably nickel-titanium, material, such as nitinol.
  • These wings (252) preferably are spaced in such a way that when they extend after installation, they are in the "marrow" portion of the bone below the cortical plate. Indeed it is preferred that wings (252) expand and are held against the lower side of the cortical plate.
  • the proximal end (254) of the device (250) may be splayed about the slot (256) in the manner shown in several of the variations described above. This allows a secure fixation of device (250) within a hole in a bone.
  • This variation shown in Figure 7A and as shown in Figure 7B similarly has one exterior cavity (258) preferably with soft tissue barbs (260) as has been noted above.
  • Variation (250) includes as a portion of its at least one exterior cavity (258), a proximal opening to allow soft tissue to extend proximally of the device (250). Also, as shown in Figure 7B, the interior of the device (250) may be equipped with soft tissue barbs 264 for additional fixation of the soft tissue included with this device.
  • Figures 8 A and 8B show respectively side and top views of a device (266) much as is shown in Figures 7A and 7B but without an interior cavity for grasping a soft tissue. Instead, in this instance, the soft tissue passes down one exterior cavity (268), preferably having included soft tissue barbs (270) for grasping the soft tissue. The graft then passes through a diametric passageway (273) into the opposite exterior cavity (275) where it preferably is held in place by more tissue barbs.
  • This variation of the inventive anchor (266) clearly places a substantial length of soft tissue graft against the wall of the bone hole.
  • the device (266) has a V-shaped slot (277) providing a bit of "splay" at the proximal end.
  • the device includes lower spring arms (272) which preferably are situated below the cortical plate when the device is installed.
  • Figures 9A and 9B show still another variation of the invention (290) including screw threads (292) which, in conjunction with upper slot (294) may be used to twist the device (290) into a hole (threaded or not) in a bone.
  • This device (290) includes one or more longitudinal exterior cavities for grasping the soft tissue.
  • the proximal end of device (290) includes holes (298) at the end of one or more exterior cavities (296) to allow the soft tissue to proceed from anchor (290) proximally to another site.
  • the distal end (300) is also adapted to enter the chosen bone hole. It may be modified to include a thread cutting portion at that distal end (300).
  • Figure 10A shows a side view of a device (300), that as shown in Figure 10B and 10C, snaps into a generally cylindrical shape after introduction into the bone hole.
  • the installed form is generally a cylinder but contains one or more external cavities for passage of the soft tissue.
  • the external protuberances (304) and soft tissue barbs (306) are shown in this variation.
  • the device is carefully sized in relation to the chosen diameter of the hole, so that there is a tight fit when it progresses from the unsnapped shape as shown in Figure 10B to the snapped shape as shown fully installed in Figure IOC.
  • Figures 11A and 1 IB show a variation of the device shown in Figures 10 A, 10B, and IOC.
  • the radial protuberances (310) on the device (312) are of a different form in that they are teeth or blocks rather than being ridges as shown in Figure IOC.
  • the interior (314) of the device includes soft tissue barbs (316) to allow further grasping attachment of the soft tissue device.
  • the device shown in Figure 1 1 B is inserted loosely into the bone hole and snapped into shape as shown in Figure 10C after the device and its attendant soft tissue are properly positioned.
  • interosseous soft tissue-to-bone anchors in which the anchors themselves may or may not have external cavities for pressing the soft tissue against the bone hole provided for their introduction.
  • Figure 12A shows one such variation (320).
  • the proximal end (322) is smaller than the distal end (324).
  • the soft tissue is preferably simply knotted in the device and installed in the bell-shaped hole in the bone by folding the device (320).
  • the device (320) may be introduced into the chosen hole by slotting it in the manner shown with regard to the device (300), (312) shown in Figures 10A, 10B, 10C, 1 1 A, and 1 IB.
  • Figure 13A shows a top view of a device (330) which is inserted into a slot shaped hole in the bone.
  • Figures 13B and 13C respectively, show side and end views of device (330).
  • This device may have a passageway (332) passing from the interior of device (330) to its exterior.
  • the device may have an exterior cavity (334) including soft tissue barbs (336) as desired.
  • the exterior of the device may have exterior protuberances (340) to assist with fixing the device within the slot in the bone.
  • Figure 13D shows such bone (342) and placement of the device (330) along with a length of soft tissue (344).
  • the soft tissue (344) extends proximally from the proximal end of exterior cavity (334) and passes distally through the cavity, through passageway (332) and out between the leaves of device (330).
  • Figure 14A shows a top view and Figure 14A shows a side view of device (350) having passageway (352) extending from the proximal end 354 to the distal end (356).
  • the device (350) is another variation which is fit into a slotted opening in the bone.
  • the interior of the passageway (352) is preferably fitted with soft tissue barbs.
  • the exterior cavity (358) preferably also includes soft tissue barbs (360) as needed.
  • the exterior surface may also include projections (362) to help lodge the anchor (350) firmly in the slot placed in the bone for receiving this device.
  • FIG 15A shows another anchor device (380) which is coiled and, unlike the variations shown in Figures 10A, 10B, IOC, 1 1 A, and 1 IB, is configured in such a way that prior to introduction into the formed hole in the bone, the anchor is larger than that hole.
  • the concept of operation here is that the generally spirally wound device (380) grasps the soft tissue (382) on its interior and when the device is squeezed about the soft tissue (382) firmly holds it using the ridges (384) found both on the inside and the outside of the device (380) and the hole itself (386) in Figure 3B maintains the collapsed condition of the device (380).
  • Device (380) is foraminous and it has a number of holes (392) found in the wall of the device, which holes (392) pass from the interior of the device to its exterior. These holes allow ingrowth between the soft tissue and the bone in hole (386).
  • the device (380) itself is preferably made of a material which is bioerodable and is spring-like so to have a spring fit inside hole (386).
  • the variation shown in Figure (380) has a slight conical taper. That is to say that the distal end of the device (394) has a nominally smaller diameter than the proximal end of the device (396). This aids in the placement of the device in the bone hole (386) shown in Figure 15B.
  • Figure 15B shows the introduction of the device into the hole (386) but it should be noted that the device (380) with its included soft tissue (382) has a significant more distance to travel before it should be released.
  • Figure 16 shows a top view of a variation (400) of the device surrounding a soft tissue graft (402).
  • the device (400) has external protuberances (404) and internal soft tissue barbs (406).
  • the construction and use are the same as for the device shown in Figures 15A and 15B.
  • Figure 17 shows a perspective view of an anchor device (408) made according to the invention which is not foraminous. It has external protuberances (410) for meshing with the bone in the bone hole but otherwise is quite similar to the variation discussed just above.
  • Figure 18 shows a variation (412) which is minimal in material content and is designed to rote away in a fashion much more quickly than others and allow the soft tissue to merge and grow into the bone in a quite quick fashion.
  • the holes (414) through the spirally wound sheet (460) are large and square and the external barbs (418) are placed at the junctions of the remaining portions.
  • FIGs 19A and 19B show a device (420) in which soft tissue is grasped by a pair of spring members (422) situated on the interior device (420).
  • the device itself hinges about the distal end (424) of these spring members and when the device is inserted into bone (426) as is shown in Figure 19C, the spring members (424) press against the soft tissue and in turn extend the radial protuberances (428) into the bone (426).
  • Figures 20A and 20B show another variation (430) of a device which soft tissue (432) is introduced into the center of the device and as the device is introduced into bone hole (434), the soft tissue barbs (436) on the interior of the device (430) grasp the soft tissue (432).
  • the self-camming action about hinge region (438) both extends the rotatable protuberances (440) or bone barbs (440) and the spring region (442) outwardly on a radius so that together they hold a device in place.
  • Figure 20C shows device (430) in place in bone (444).
  • proximal portion (446) proximal of barbs (440) it is desirable to size the proximal portion (446) proximal of barbs (440) so that the proximal length (446) approximates or is greater than the depth of cortical plate (448). In this way, one of the protuberances are extended out into softer bone.
  • Figures 21 A through 21 C show a final variation of the inventive bone anchor.
  • the device (450) includes a proximal portion (452) having internal soft tissue barbs which grasp the soft tissue (456).
  • the distal portion (458) is generally cylindrical and fits within the hole chosen for the device (450).
  • the device is held in place within the bore (460) in the bone by the rotatable protuberances (462) shown in the figures. Again, as the device is pressed into bore (460) in the bone, the two sections of the proximal portion (452) rotate about a common center with respect to each other and the external protuberances (462) are pressed into the bone.
  • the soft tissue to be introduced into the bone is first inserted into the inventive anchor.
  • the inventive anchor and the tissue are then introduced into the bore or slot shaped hole provided for the specific anchor. Adjustment of the length of the soft tissue graft may, in some instances, be necessary before completion of the introduction of the anchor. This, of course, depends on several factors known to orthopedic surgeons who would use these devices.

Abstract

L'invention concerne un dispositif chirurgical. Il s'agit, plus précisément, d'un dispositif d'ancrage intra-osseux servant à fixer solidement un tissu mou, tel qu'un tendon ou un ligament, dans une cavité formée dans un os. Le dispositif lui-même est, de préférence, formé de sorte à ce que le tissu mou soit pressé contre l'os par le dispositif, afin d'accélérer la croissance du tissu mou et sa fixation à l'os. Le dispositif comporte de préférence des ardillons d'ancrage sur sa surface extérieure pour accrocher le tissu dans des conditions de répartition améliorée de tension et avec désintégration minimale de l'interface tissu mou-os et les apports de substances nutritives associés. L'ancrage et le tissu mou peuvent être traités par des facteurs de croissance ostéogéniques. Divers procédés d'utilisation du dispositif sont également décrits.
PCT/US2001/031693 2000-10-17 2001-10-10 Dispositifs d'ancrage intra-osseux du tissu mou dans l'os et procede d'utilisation de ces dispositifs WO2002032345A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001296789A AU2001296789A1 (en) 2000-10-17 2001-10-10 Intraosseous soft tissue-to-bone anchor
EP01977689A EP1326557A2 (fr) 2000-10-17 2001-10-10 Dispositifs d'ancrage intra-osseux du tissu mou dans l'os et procede d'utilisation de ces dispositifs

Applications Claiming Priority (2)

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US69165200A 2000-10-17 2000-10-17
US09/691,652 2000-10-17

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AU2001296789A1 (en) 2002-04-29
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EP1326557A2 (fr) 2003-07-16

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