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WO2002034120A2 - Dispositifs de fixation de facettes - Google Patents

Dispositifs de fixation de facettes Download PDF

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Publication number
WO2002034120A2
WO2002034120A2 PCT/US2001/049661 US0149661W WO0234120A2 WO 2002034120 A2 WO2002034120 A2 WO 2002034120A2 US 0149661 W US0149661 W US 0149661W WO 0234120 A2 WO0234120 A2 WO 0234120A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
sleeve
zone
implant
head
Prior art date
Application number
PCT/US2001/049661
Other languages
English (en)
Inventor
Michael Dudasik
Original Assignee
Blackstone Medical, 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 Blackstone Medical, Inc. filed Critical Blackstone Medical, Inc.
Priority to AU34073/02A priority Critical patent/AU3407302A/en
Publication of WO2002034120A2 publication Critical patent/WO2002034120A2/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. 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
    • A61F2/28—Bones
    • A61F2/2846—Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects

Definitions

  • the present invention is directed to devices that are used to facilitate post-operative bone- to-bone fusion, tissue-to-bone fusion and particularly, bone fusion between two adjacent vertebrae.
  • Vertebral disc degeneration has been associated with back pain and motor function loss. Loss of disc space height, extrusion of disc material, and translation of the vertebrae can result in compression of the spinal cord and nerve roots.
  • One prescriptive treatment is to stabilize the vertebral bodies through fusion of adjacent vertebrae within the spinal column.
  • An operative technique of spinal column fusion employs inter-vertebral body cages.
  • the cage is inserted between two vertebral bodies in order to restore space between the discs.
  • the device is filled with bone graft to promote fusion between the vertebrae.
  • Access holes around the periphery of the cage provide intimate contact between the graft and host bone.
  • the cages are typically inserted from the back (posterior) or front (anterior) aspects of the spinal column.
  • the anterior approach involves laparoscopic methods.
  • Stabilization of the fusion site is advantageous in the early post-operation period. Similar to fracture healing, new bone is overlayed between the vertebral bodies, using the graft material as a lattice. Using cages as stand alone devices has met with limited success for the reason that immediate stabilization is not always guaranteed. For this reason, supplemental fixation is becoming more commonplace.
  • FIGS 1 A and IB show typical lumbar vertebra in which translaminar screws are driven across the facet joint, effectively locking the two vertebra in place while allowing for the four types of spine motion: forward flexion, backwards extension, axial torsion, and lateral flexion.
  • a hole is drilled through the spinous process, through the lamina, and across the facet.
  • a slightly higher angle is employed in drilling a hole through the spinous process, along the top of the lamina, and across the facet.
  • the drill is angled between adjacent spinous processes and a hole is drilled directly across the facet into the bone of the pedicle/transverse process. In all cases both faGet joints are fixed, the screws crossing at the midline. These approaches require a 3 "-4" posterior incision along the patient's midline. Frequently, additional stab wounds are required in order to approach with the drill at a low enough angle for proper screw placement.
  • U.S. Patent nos. 5,964,769 and 5,935,133 disclose a surgical cable system and method for securing surgical cable around a portion of a human element, such as bone.
  • the surgical cable system may include a connector and a tensioner.
  • the connector may be adapted to hold a pin, positionable within the connector, such that the pin may secure the cable within the connector.
  • the pin may be repositioned, after securing the cable, to allow the cable to move freely through the connector.
  • the cable may be oriented within the connector such that the ends of the cable are perpendicular or parallel with respect to each other.
  • the tensioner is preferably adapted to vary the tension of the cable.
  • the cable may be passed through the connector, around a portion of a human bone, and back through the connector.
  • the cable may be tensioned by use of the tensioner and secured into position within the connector.
  • U.S. Patent no. 4,61 1 ,581 discloses an apparatus for straightening spinal columns.
  • inserts are provided which are engaged by force transmitting members. The inserts are expanded into gripping engagement with the underside surfaces of the holes formed in the vertebrae.
  • the present invention is directed to fixation devices used in the stabilization of adjacent bones, adjacent tissue and bone wherein the stabilization occurs at a site where fusion is desired.
  • fixation devices used in the stabilization of adjacent bones, adjacent tissue and bone wherein the stabilization occurs at a site where fusion is desired.
  • an intervertebral graft cage may be inserted between the vertebrae in order to promote the growth and fusion of bony material.
  • Supplementary fixation devices are placed in holes drilled through the medial articular process and the pedicle of adjacent vertebrae.
  • the devices are comprised of an arrangement having a first expandible sleeve and a second expansion component that expands the sleeve when placed inside it.
  • the arrangement is long enough to traverse two adjacent vertebrae through which a hole has been drilled.
  • the sleeve is placed within the hole, and the sleeve expands when the expansion component is placed inside it.
  • the arrangement forms a firm fit with the bone surrounding the drill hole, locking the fixation device in place.
  • the expansion occurs at an end of the device, both ends of the device, in the middle of the device, and other possible variations on these arrangements.
  • the device may be provided with teeth-like protrusions which bear into the bone in the area around the drill hole, which provides an added measure of fixing the bone into place.
  • Yet another embodiment of the present invention is an inserter suitable for delivering at leasl some of the devices discussed in the above paragraph to the interior of a drilled hole.
  • the inserter has a drive rod movably mounted within a body and having a length longer than the body, the body housed within a sleeve that is movably mounted over the body, the body being provided with a slit distal tip, the distal tip having an inward facing projection; wherein the slit distal tip is allowed to fl outwardly when the sleeve is moved away from the slit distal tip.
  • Yet another embodiment of the present invention is directed to a graft retaining device for facilitating the growth of bone material in the space between adjacent vertebrae, the device having a body, which could be cylindrical in shape, provided with a length and an opening extending through the body. On one side, the body has a slit extending in the length direction. The body is further provided with a non-smooth surface having a series of annular ribs and adjacent grooves. In use, the opening is loaded with bony material. The through holes permit contact between the vertebrae and the graft material packed inside, facilitating bone growth.
  • the graft retaining device is inserted in a collapsed state, and expanded out to the drill hole walls.
  • a further aspect of the invention relates to a delivery instrument for inserting this graft retaining device in a hole created in bone or tissue.
  • Figures lA, I B shows a posterior and lateral view, respectively of prior art fixation devices
  • Figures 2, 3, and 4 show prior art techniques for selection the location for a drill hole.
  • Figure 5 A shows a perspective view of the components of an embodiment of the present invention.
  • Figure 5B shows a perspective view of the Figure 5A embodiment prior to insertion.
  • Figure 5C shows a perspective view of the Figure 5B embodiment after insertion.
  • FIGS 6A-6C show another embodiment of the present invention.
  • FIGS 7A-7C show yet another embodiment of the present invention.
  • FIGS 8A-8D show yet another embodiment of the present invention.
  • FIGS 9A-9C show yet another embodiment of the present invention.
  • Figure 10 depicts an embodiment of a graft retaining aid.
  • Figures 10A to 10E show the placement of the graft retaining device within a hole that has been drilled across two facets.
  • Figures 1 1A- 1 1C show an embodiment of a surgical implant.
  • Figures 12A- 12D show side plan and cross sectional view s of the Figures 1 1 A- 1 1C surgical implant.
  • Figures 13A- 13B show alternatives to the Figures 1 1 A- 1 1C embodiments.
  • Figure 14A shows a perspective view of the an embodiment of an inserter.
  • Figure 14B shows a perspective view of the distal tip of the inserter shown in Figure 14A.
  • Figure 15 shows the implant loaded into the inserter.
  • Figure 16 shows the inserter actuated to expand the implant.
  • Figure 17 shows the implant released from the inserter.
  • Figure 5 A shows an embodiment of the invention in which an expansion sleeve is placed over an inner expander.
  • the expander bolt 10 of this embodiment is comprised of the exterior sleeve 12, inner expander 14, a nut 16, and optionally a locknut 18.
  • the sleeve 12 has a flange 24 on its medial end 26 of the shaft 27.
  • the flange has a series of tangs 28, which are sharpened teeth, that penetrate into the bone in the area surrounding the dril hole when the assembly is inserted and tightened. This prevents the assembly from rotating after ii has been inserted.
  • the sleeve 12 is provided with a tapered profile where the diameter gradually increases as the lateral end is approached, so that the cross sectional area of opening increases as the lateral end is approached.
  • the sleeve 12 is further provided with discontinuations 32 on the exterior of the shaft. As shown in Figures 5A-5C, the discontinuations may be slot-shaped openings. The slots extend from the lateral end 30 to approximately the mid point of the length of the shaft 27.
  • Sleeve 12 is also provided with annular ridges 29 on its surface which increase resistance to removal when the assembly is fixed within the drill hole.
  • Expander 14 is provided with a first cylindrical zone 34 having a substantially constant thickness along the length of the zone. This zone is of a thickness that passes freely into the interioi 22 of the sleeve 12.
  • Conical zone 36 of expander 14 has a gradually increasing thickness as the lateral end 38 of the expander is approached. At least a portion of the conical zone has a cross sectional area that is greater than the cross sectional area of the interior of the sleeve, so that when this portion of the conical zone enters the sleeve, the sleeve deforms and is forced outwardly (see Figures 5B and 5C). When the assembly is in place it engages the bone surrounding the drill hole.
  • a number of pins 40 extend outward from the expander.
  • the pins 40 are spaced around the exterior of the expander 14 and are dimensioned to fit within the slots 32 formed on the sleeve 12.
  • the expander is further provided with threaded portion 35 along the cylindrical zone 34.
  • the threaded portion 35 extends through the sleeve 12 (see Figure 5B) and mates with threads on the interior of the nut 16 and optional locknut 18.
  • the expander 14 is placed within the sleeve 12. This arrangement is then placed within the drill hole extending through adjacent vertebrae, with the flange bearing against the exterior of one of the vertebrae.
  • the nut is tightened, pulling the expander 34 through the sleeve 12.
  • the conical zone 36 is pulled through the sleeve 12 by the tightening of the nut 16
  • the sleeve expands at its lateral end, thereby engaging the bone located at the interior of the drill hole.
  • the tangs located on the flange 24 of sleeve 12 bear into the bone. Ridges 29 on the exterior of the sleeve provides an additional measure that contributes to securing the assembly to the bone.
  • Sleeve 12 is provided with slots 42 located on the medial end of the shaft which extend onto the flange 24.
  • the sleeve 12 is provided with a tapered profile shown at 12A on the interior wall at the medial end so that the cross sectional area increases as the medial end of the sleeve is approached.
  • Nut 16 is provided with a conical extender 44.
  • the extender 44 has a tapered profile that gradually widens from its distal end 44A to its medial end 44B. When the outer nut 18 is tightened on nut 16, the extender 44 enters the sleeve 12 and expands it outwardly at the medial end of the sleeve.
  • the assembly expands at the distal end as well.
  • a second region is provided where the fixation device expands out into the bone surrounding the drill hole.
  • FIGS 7A-7C Yet another embodiment which employs bolt-like components is shown in Figures 7A-7C.
  • This embodiment employs an expander 34 having a shaft 49 over which at least a portion 50 is threaded. Portion 52 of shaft 49 is smooth and has a substantially constant cross sectional area over its length. At its distal end 54 the expander is provided with a rounded tip 55 , which may facilitate insertion through the sleeve 12. The expander is provided with a hex nut 56, which in this embodiment is integral with the shaft 49, but does not have to be. While sleeve 12 is similar to the sleeve already described, it is provided at its distal end 54 with a tapered tip.
  • FIGS. 8A-8C show yet another bolt-type embodiment.
  • Sleeve 12 is provided with a hollow portion 61 which defines an open interior space 60 dimensioned to receive expander 34.
  • the interior space is threaded and mates with the threads 62 provided on the exterior of the shaft 64 of the expander 34.
  • the threads 62 are provided along the shaft from its distal end to an intermediate point. Close to the Allen head 70, the shaft 64 is thread-less.
  • the hollow portion 61 is provided with slotted openings that are confined to the inte ⁇ nediate region. That is, the slots are defined on four sides by the hollow portion and do not open onto an edge of the expander 34.
  • the assembly is provided with a zone which expands outwardly into the space surrounding the drill hole.
  • the hollow portion 61 is joined to a flange 66 provided with tangs 68.
  • the tangs are sharp, tooth-like protrusions angled in the direction of the hollow portion 61.
  • the shaft 64 of the contractor is provided with an Allen head 70 (or some other known tool head).
  • Allen head 70 or some other known tool head.
  • the contractor is placed within the sleeve and the contractor is tightened.
  • the threaded portion of the sleeve is forced to rise towards the medial end.
  • head 70 compresses against the flange 66 to a point where screw rotation is halted. Further tightening forces the thread portion of the sleeve to ride up the screw, causing the ribs to deform. This causes the slotted area of the sleeve to move into the walls of the drill hole, locking the implant in place.
  • Figures 9A-9C show yet another embodiment in which a housing 70 having a hollow portion 72 defines an open interior space 60.
  • a spring sleeve 74 is provided with a slotted flange 76, from which extends a hollow portion 78 having a length that extends only partially into the housing 70.
  • a pair of protruding fingers 80 threaded on their interior surface, extend from the hollow portion.
  • Flexible tabs 82 are provided at the end of the fingers 80 and extended outwardly, perpendicular to the direction in which the fingers extend.
  • the fixation device further includes a loc rod 84 provided at its proximal end with an Allen head 86, from which a shaft 88 extends outwardly. The exterior of the shaft 88 is dimensioned to pass into the hollow portion of the spring sleeve 74 and threadedly engage the spring sleeve and the fingers 80.
  • the housing 70 is placed within the drilled hole.
  • the flexible tabs 82 press inwardly against the interior wall of tl housing 70. See Figure 9B.
  • the flexible tabs 82 pass out of the distal end of the housing 70.
  • the outward protrusion of the tabs 82 holds the spring sleeve 74 in place and the positioning of the arrangement is secured when the lock rod is screwed into the spring sleeve so that the shaft passes between and immobilizes the tabs.
  • FIG. 10 depicts a graft retaining aid.
  • the graft retaining device of this embodiment is a tube 200 having an open passageway 202 through the length of the tube with a longitudinal slit 204 provided on one side.
  • a series of annular ribs 206 and adjacent grooves 207 provide a non smooth surface that facilitates fixation between the device and the adjoining facets.
  • Through holes 208 permit contact between the host bone and the graft material packed inside, which facilitates fusion of the bony material.
  • FIGS 10A to 10E show the placement of the graft retaining device within a hole that has been drilled across two facets.
  • the delivery instrument 600 is tubular in shape and is constructed with an outer shaft 602 and an inner shaft 606.
  • the inside diameter of the outer shaft 602 is smaller than the outer diameter of the graft retaining device 200, when the slit on the device is open, yet when the slit on the device is closed, the device fits within the outer shaft 602, which in turn fits within the drill hole.
  • the diameter of the device 200 is smaller than the diameter of the drill hole through the facets and the slit does not open fully, or not at all, when the device is placed in the hole.
  • Outer shaft 602 is provided with handle portion 603 and device-receiving portion 604. The device 200 is loaded into the device-receiving portion 604 of the outer shaft 602, which extends out from the delivery instrument 600.
  • the device-receiving portion 604 of the delivery instrument 600 is inserted into the hole drilled across the facets ( Figure 10B), and driven in until the stop 605 on outer shaft 603 encounters the hole.
  • Outer shaft 602 is retracted, such as by gripping handle portion 603 and pulling back on it, which causes the outer shaft to slide over the inner shaft 606, while leaving the device 200 in plaGe ( Figure 10C) .
  • the inner shaft 606 may be provided with a solid end that abuts the graft retaining device, which aids in keeping it in place when the outer shaft 602 is retracted.
  • the outer shaft 602 is entirely retracted, leaving the device 200 within the drill hole ( Figure 10D).
  • the device When the outer shaft 602 is retracted from the device 20, the device expands at slit 204, as much as the size of the drill hole permits. The device thus forms an interference fit with the walls of the drill hole ( Figure 10D). The device 600 is then removed from the vicinity of the drill hole 600 ( Figure 10D)
  • Figures 1 1 A- 1 1C shows a two piece fixation device 700 utilizing a pin 702 and a sleeve 704.
  • the pin 702 ( Figure 1 1A) is comprised of a head 706 and a tip 708 which are connected by a cylindrical shaft 710.
  • the head may be provided with flat sides 712. Due to the size of head 706, which is greater than the size of the opening in the sleeve into which the pin is inserted, the head eventually provides a positive stop when the pin 702 is driven into the sleeve 704.
  • Tip 708 is provided with a rounded end 714 ( Figures 12C, 12D) which facilitates the entry the expander pin 702 into the sleeve 704 and provides a smooth surface to reduce or avoid tissue irritation.
  • Behind the spherical tip, in the direction of the shaft 710 is at least one recess 716.
  • a plurality of recesses 716 are shown in Figure 1 1A. The recesses are less thick when compared to the thickness of the shaft 710.
  • Behind the recesses, also in the direction of the shaft 710, is an undercut 718, which also is a region of reduced thickness.
  • Sleeve 704 ( Figure 1 IB) is comprised of a head 720, a hollow tubular mid-shaft 722, and a distal tip 724.
  • Head 720 has a slot 721 which receives the head 706 of the expander pin 702. Behind this is an undercut that captures an inserter instrument. One wall of the undercut is graduated to ease disengagement of the Inserter.
  • the mid-shaft 722 has a series of fenestrations 726 intended to provide an interference fit with the walls of the hole prepared in the bone or tissue.
  • the distal tip 728 has a series of slots 730 which allow the sleeve to expand.
  • the interior of sleeve 704 is open so that the pin 702 can be received therein.
  • the inner wall of the sleeve 704 near the distal tip 728 is provided with tabs 732 that project into the open space. As the pin is driven the Tabs engage the undercut on the pin.
  • the exterior of the distal tip has fenestrations 715 that in the deployed condition create an interference fit with the walls of the prepared hole.
  • the distal tip may also be smooth.
  • the fenestrations of the preferred embodiment resemble a cortical screw thread. They could however be of any configuration (grooves, splines, etc.) which would provide a "bite".
  • Figure 1 1C shows a tapered portion 717 as an alternate to the fenestrations 715 . Rather than cutting into bone, the taper would engage a conic shape prepared in the bone, providing a measure of resistance to pull out of the Implant.
  • Figures 12 A, 12B, 12C, and 12D illustrate the transformation of the implant from the non- deployed, pre-expanded state to the deployed, expanded state. The sleeve and pin arrangement is inserted into the prepared drill hole in the initial, non-deployed state.
  • the tab 732 on the inner wall of the sleeve resides within the slot 730 provided on the pin 702.
  • the sleeve is in an unexpanded state.
  • the pin 702 is then moved forward in the sleeve 704 so that the head 706 of the pin 702 is situated in the slot 721 of the head 720 on the sleeve 704. Forward movement of the pin moves the recess out from under tab, and the tab rides up on the shaft 710.
  • the shaft is thicker than the recess, the abutment of the tab against the shaft expands the sleeve at the recessed region.
  • the shaft is provided with an undercut, which is a grooved region on the shaft having a modest reduction in thickness, i.e., a thickness intermediate that of the recess 716 and shaft 710.
  • the undercut 718 is situated where the tab will reside when the pin is fully inserted in the sleeve and the device is in th deployed state.
  • the walls of the groove retain the tab within the undercut, insuring that the tab will remain within the groove. See, e.g., Figure 25D.
  • Figures 13A and 13B show alternate head configurations.
  • the slotted head of the sleeve 704 is omitted and the head of the pin is replaced by a hex head ( Figure 13 A), or alternatively by a smooth head ( Figure 13B).
  • Figure 14A shows an embodiment of the inserter 900 that can be used to insert the implant of Figures 11 , 12 and 13.
  • the inserter 900 is provided with a drive rod 906 movably mounted within a body 902, which in turn is housed within a sleeve, which moves over the body.
  • Figure 14B shows an enlargement of the distal region 908 of the inserter 900.
  • the body is provided with slots 910, here shown present on the lateral sides 912 of the body 902, which results in a split distal tip 908 of the body 902.
  • Distal tip 908 is further provided with an inward facing projection 914, which extends into the groove 719 provided on the implant 700 when the implant is loaded in the body (see Figure 15).
  • the slots 910 in the body 902 allow the body to flex as the implant is attached to the inserter.
  • the implant is loaded in the inserter tip is shown in Figure 15.
  • the sleeve of the inserter is retracted and is out of view. Whe the implant is inserted into the split tip 908 of the body 902, the body 902 expands over the implai head at the slots 910.
  • the drive rod 906 is retracted.
  • the sleeve 904 is moved from the retracted position towards the distal tip, which applies pressure on the body, which insures that the implant cannot be displaced from the inserter.
  • the implant is inserted into the prepared hole.
  • the drive rod is advanced and brought in contact with the pin.
  • Figure 16 shows drive rod 906 moved distally to the point where the head 706 of the expander contacts the head 720 of the sleeve. At this point the implant is fully expanded against th walls of the prepared hole.
  • Figure 17 shows the release of the inserter from the deployed implant. To effect this, the sleeve is retracted, allowing the distal tip 908 of the body to move outwardly. Further advancement of the driver rod pushes on the implant, The edges of the projection and the groove are ramped to facilitate this action. The inserter is then removed from the patient.
  • Movement of the drive rod through the body can be effected by providing complimentary threaded surfaces on the interior of the body and exterior of the rod. Rotating the rod will effect a linear movement of the rod, either to or away from the distal end, depending upon the direction of rotation.
  • the inserter may be provided with a gun or pistol grip type instrument when the linear action of the drive rod is provided by the actuation of a pivoting handle.
  • the sleeve can be a separate instrument used in a previous segment of the surgical procedure.
  • the sleeve can also be in place within the patient prior to loading / introducing the Implant. In this instance the Implant is snapped into the body, then fed through the sleeve and into the prepared hole.
  • the embodiments of the present invention can be constructed of any material known to be suited for constructing surgical implants.
  • such material include titanium, cobalt chromium alloy, stainless steel, plastic materials, and bioabsorsbable materials.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

La présente invention concerne des dispositif utilisés en chirurgie pour relier ensemble des os et/ou des tissus, ces dispositifs étant habituellement introduits dans un trou pratiqué dans l"os et/ou le tissu. Ces dispositifs comprennent des implants, des instruments d"apport et des dispositifs de retenu de greffon.
PCT/US2001/049661 2000-10-27 2001-10-26 Dispositifs de fixation de facettes WO2002034120A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU34073/02A AU3407302A (en) 2000-10-27 2001-10-26 Facet fixation devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69872100A 2000-10-27 2000-10-27
US09/698,721 2000-10-27

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WO2002034120A2 true WO2002034120A2 (fr) 2002-05-02

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US6740090B1 (en) 2000-02-16 2004-05-25 Trans1 Inc. Methods and apparatus for forming shaped axial bores through spinal vertebrae
US6899716B2 (en) 2000-02-16 2005-05-31 Trans1, Inc. Method and apparatus for spinal augmentation
US7041136B2 (en) 2000-11-29 2006-05-09 Facet Solutions, Inc. Facet joint replacement
US7074237B2 (en) 2000-12-13 2006-07-11 Facet Solutions, Inc. Multiple facet joint replacement
US7090698B2 (en) 2001-03-02 2006-08-15 Facet Solutions Method and apparatus for spine joint replacement
US7101398B2 (en) 2002-12-31 2006-09-05 Depuy Acromed, Inc. Prosthetic facet joint ligament
US7306628B2 (en) 2002-10-29 2007-12-11 St. Francis Medical Technologies Interspinous process apparatus and method with a selectably expandable spacer
US7309338B2 (en) 2000-02-16 2007-12-18 Trans1 Inc. Methods and apparatus for performing therapeutic procedures in the spine
US7473256B2 (en) 2003-10-23 2009-01-06 Trans1 Inc. Method and apparatus for spinal distraction
US7507242B2 (en) 2004-06-02 2009-03-24 Facet Solutions Surgical measurement and resection framework
US7524324B2 (en) 2004-04-28 2009-04-28 Kyphon Sarl System and method for an interspinous process implant as a supplement to a spine stabilization implant
US7547317B2 (en) 2000-02-16 2009-06-16 Trans1 Inc. Methods of performing procedures in the spine
US7549999B2 (en) 2003-05-22 2009-06-23 Kyphon Sarl Interspinous process distraction implant and method of implantation
US7553307B2 (en) 2004-10-15 2009-06-30 Baxano, Inc. Devices and methods for tissue modification
US7566345B1 (en) 2001-03-01 2009-07-28 Facet Solutions, Inc Prosthesis for the replacement of a posterior element of a vertebra
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