EP3148460A1 - Lateral mass fixation system - Google Patents
Lateral mass fixation systemInfo
- Publication number
- EP3148460A1 EP3148460A1 EP15799771.9A EP15799771A EP3148460A1 EP 3148460 A1 EP3148460 A1 EP 3148460A1 EP 15799771 A EP15799771 A EP 15799771A EP 3148460 A1 EP3148460 A1 EP 3148460A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- facet
- guide
- spine
- guide device
- proximal portion
- 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.)
- Withdrawn
Links
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 25
- 239000007943 implant Substances 0.000 claims description 12
- 210000000988 bone and bone Anatomy 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000013459 approach Methods 0.000 description 13
- 210000004872 soft tissue Anatomy 0.000 description 8
- 238000002224 dissection Methods 0.000 description 5
- 230000004927 fusion Effects 0.000 description 5
- 238000012800 visualization Methods 0.000 description 5
- 208000002193 Pain Diseases 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000003484 anatomy Anatomy 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 210000003041 ligament Anatomy 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 230000000472 traumatic effect Effects 0.000 description 2
- 208000001294 Nociceptive Pain Diseases 0.000 description 1
- 206010057239 Post laminectomy syndrome Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004081 narcotic agent Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
- A61B17/7082—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1671—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1757—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the spine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
- A61B17/7085—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements for insertion of a longitudinal element down one or more hollow screw or hook extensions, i.e. at least a part of the element within an extension has a component of movement parallel to the extension's axis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1604—Chisels; Rongeurs; Punches; Stamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7055—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone 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, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
Definitions
- Posterior cervical fusion with lateral mass fixation is the most rigid cervical instrumentation. It requires extensive dissection of muscles and ligaments off the posterior spine, so that the surgeon can have direct visualization to safely perform the procedure. This dissection causes acute and chronic soft tissue pain syndrome. Acutely, patients are typically hospitalized for three to four days for pain control that requires IV narcotics. This is compared to one-day hospitalization for anterior approaches that do not require any muscle or soft tissue dissection. Long-term patients with posterior approaches frequently have persistent pain due to the extensive nature of the dissection. Sometimes, after posterior-access cervical fusion surgery, soft tissues may not return to anatomic position and may be permanently deformed. Persistent pain after posterior surgical approaches is referred to as post- laminectomy syndrome. (Fig. 1 is a lateral view of the C5 and C6 cervical vertebrae, illustrating the anatomy.)
- anterior cervical spinal fusion surgery since it is considered less traumatic to the patient compared to posterior approaches, anterior cervical spinal fusion surgery has generally been preferred over posterior fusion surgery. At the same time, posterior approaches to the cervical spine do have some advantages over anterior approaches.
- the various embodiments described herein provide devices, systems and methods for accessing the cervical spine via a posterior approach and implanting a spinal fixation device in the cervical spine.
- the embodiments described below generally include a guide device, through which or along which one or more spinal fixation devices may be advanced.
- the guide devices described herein generally include a distal end that can be inserted into a cervical facet. Once inserted into a facet, the guide device is relatively stabilized (or
- a device for accessing and guiding at least one fixation device to a spine includes a distal portion configured to fit in a facet of the spine and a proximal portion extending from the distal portion.
- the distal and proximal portions are hollow.
- the distal and proximal portions are solid.
- the distal portion may be removable from the proximal portion.
- the distal portion includes a chamfered or beveled end portion configured to facilitate insertion of the distal portion in the facet of the spine.
- the proximal portion may include a slot formed therethrough for receiving and advancing a fixation device to the spine.
- the end of the proximal portion may include opposing sides having a concave shape and/or opposing sides having a convex shape.
- a system for accessing and guiding at least one fixation device to a spine includes a facet guide device, the facet guide device including a distal portion configured to fit in a facet of the spine and a proximal portion extending from the distal portion.
- the system further includes a slidable guide device for sliding over the facet guide device to guide at least one instrument to the spine.
- the slidable guide device may be rotatable about a longitudinal axis of the facet guide device.
- the instrument may be a decortication device.
- the slidable guide device may be a double- barreled or dual-lumen guide tube.
- the slidable guide device may further include a drill guide having at least one drill path defined therein.
- the proximal portion of the facet guide device may have one of a circular cross-sectional shape or a square cross-sectional shape.
- the proximal portion of the facet guide device may have opposing sides having a concave shape.
- the proximal portion of the facet guide device may have opposing sides having a convex shape.
- the slidable guide device may include a first tube for sliding over the proximal portion of the facet guide device and a second tube mounted on a side of the first tube for guiding the at least one instrument.
- the system may further include at least one bone screw for advancing through the slideable guide device.
- a method for implanting a spinal fixation implant includes
- the method may further include attaching the fixation device by one of attaching a plate to a facet implant located in the facet or attaching a plate to the two adjacent vertebrae.
- Fig. 1 is a lateral view of the C5 and C6 cervical vertebrae, illustrating the anatomy.
- FIGs. 2A and 2B are posterior and lateral views, respectively, of a cervical spine with prior art posterior fixation devices applied thereto.
- Figs. 3 A and 3B are posterior views of a portion of a cervical spine, illustrating insertion of a distal portion of a guide device into a facet between two cervical vertebrae, according to one embodiment.
- Figs. 4A and 4B are posterior views of a portion of a cervical spine, illustrating insertion of a distal portion of a guide device into a facet between two cervical vertebrae, according to an embodiment.
- FIGs. 5 A and 5B are lateral views of a portion of a cervical spine, illustrating insertion of a distal portion of a guide device into a facet between two cervical vertebrae and removal of a proximal portion of the guide device from the distal portion, according to one embodiment.
- FIGs. 6A-6D are perspective views of a portion of a cervical spine, illustrating a system and method for inserting a lateral mass implant, according to one embodiment.
- Figs. 7 A and 7B are perspective views of a portion of a cervical spine, illustrating a system and method for inserting a lateral mass implant, according to an embodiment.
- FIGs. 8A-8E are various views of a portion of a cervical spine, illustrating a system and method for inserting a lateral mass implant, according to an embodiment.
- FIGs. 9A-9C are various views of a portion of a cervical spine, illustrating a system and method for inserting a lateral mass implant, according to an embodiment.
- FIGs. 10 A and 10B are perspective views of a portion of a cervical spine, illustrating a system and method for advancing a decorticator device over a guide device, according to one embodiment.
- Figs. 1 lA-1 ID are perspective views of a portion of a cervical spine, illustrating a system and method for advancing a drill through a guide device, according to one embodiment.
- Fig. 12 is a perspective view of a portion of a cervical spine, illustrating a system and method for inserting a lateral mass implant, according to an embodiment.
- FIGs. 13A-13N illustrate various views of a portion of a cervical spine, illustrating a system and method for inserting a lateral mass implant, according to an embodiment.
- the various embodiments described herein provide devices, systems and methods for accessing the cervical spine via a posterior approach and implanting a spinal fixation device in the cervical spine.
- the embodiments allow for a posterior approach using minimally invasive or less invasive techniques.
- the embodiments described below generally include a guide tool, through which or along which one or more spinal fixation devices may be advanced.
- the surgeon may advance the guide tool into the facet from outside the patient though a minimally invasive or less invasive incision, and then may hold the guide tool via a handle or proximal end residing outside the patient.
- This fixed point deep in the spine can be used to advance drills, awls, plates, rods and screws, to instrument the posterior cervical spine other than the facet, from a percutaneous approach without direct visualization. This avoids stripping all the soft tissue off the spine.
- a fixed point deep in the patient's spine prevents instruments from slipping off the spine or drills catching soft tissue and skidding out of control.
- the cervical facet has a fixed anatomic relationship to lateral mass bone consistent in all patients. Instruments can be advanced over the facet tool to reliable landmarks on the lateral mass without direct visualization.
- Some of the devices, systems and methods described herein may include, be performed using, or be similar to one or more components of the DTRAX® Spinal System, from Lexington Medical Technology, Inc. (www.providencemt.com). Various components of the DTRAX® Spinal System may be modified or adjusted, according to various embodiments, for uses described herein.
- a facet guide tool or device 10 may include a distal portion 12 configured for insertion into a facet space between two cervical vertebrae and a proximal portion 14 (or “shaft") that extends proximally from the distal portion 12.
- the proximal shaft portion 14 is generally long enough to extend from the distal portion 12 to a location outside the patient, where it can be held and manipulated by the surgeon.
- the distal portion 12 may include two tines 13.
- the distal portion 12 and the proximal portion 14 may either be two attached pieces or may be one piece (e.g. monolithically formed or integrally formed).
- the two attached pieces may be detachable, as will be described further below.
- the distal portion 12 may be temporary and may be removed once lateral mass fixation is achieved.
- the distal portion 12 is generally sized and shaped to fit snugly into the facet and abut the pedicle. The tight fit of distal portion 12 in the facet, due to forces applied by ligaments surrounding the area, helps provide stability to the facet guide tool 10 while fixation devices are advanced to the site.
- the distal portion 12 and proximal portion 14 are hollow, thus forming a central lumen or bore (not visible in the figures), through which one or more facet fixation devices may be advanced.
- fixation devices may be advanced over the guide tool 10 to the cervical spine.
- a fixation device may have a hole formed therethrough of complementary size and shape to the guide tool 10. The hole may be aligned with the guide tool 10 and the fixation device may be advanced along the guide tool.
- a facet guide tool or device 20 may include a distal portion 22 and a proximal portion 24.
- the distal portion 22 may include a beveled edge 23 to aid insertion of the distal portion into a facet.
- the distal portion 22 and the proximal portion 24 may both be solid, rather than hollow.
- the guide tool 20 acts as a rail, over which one or more fixation devices or other devices may be advanced. In use, the guide tool 20 may be inserted in one facet or in multiple facets during a procedure.
- the proximal shaft portion 24 may be flexible or rigid. Its purpose is to extend to the skin surface and serve as a guide for drills, plates, rods, screws and/or other tools of spinal instrumentation.
- the distal portion 22 of the guide tool or device 20 may be removable from the proximal portion 24, so that the distal portion 22 may be left in the facet as an implant.
- a system for accessing and attaching fixation devices to a cervical spine facet may include the guide tool or device 20 with distal portion 22 and proximal portion 24, as described above.
- the system may also include an outer, sliding guide tube 26 and a side-mounted guide member 28 attached to the guide tube 26.
- a screw 30 may be advanced through the side-mounted guide member 28 for attachment to bone.
- sliding guide tube 26 may be rotated about the proximal portion 24 of the guide device 20, to change the position of the side- mounted guide member 28. This change of position may be used, for example, to attach two screws to two adjacent vertebrae.
- the proximal portion 24 may have different cross-sectional shapes in different embodiments, with the circular cross-sectional shape providing 360- degree rotation of instruments advanced over it.
- a facet guide tool or device 32 may include a distal portion 34 and a proximal shaft portion 36 having a square cross-sectional shape.
- an additional guide device 38 may be advanced over the proximal portion 36 and may include a side-mounted guide tube 39.
- the square cross-sectional shape of the proximal portion 36 allows instruments to be advanced at a fixed 90 degree angle to the facet surface. This may be useful for lateral mass fixation, because the typical screw fixation is at the midpoint of the lateral mass, which is immediately above the midpoint of the facet.
- a facet guide tool 40 may include a distal portion 42 and two or more proximal shafts 44.
- a guide system may further include a slidable guide instrument 46, with a side-mounted guide 48, which may be used to advance a screw 49 into bone.
- the proximal shafts 44 may be advantageous, for example, in advancing multiple guide instruments 46 to the cervical spine, either
- Figs. 9A-9C illustrate yet another embodiment of a facet guide tool or device 50. Similar to the previously described embodiment, in this embodiment, the guide tool 50 includes a distal portion 52 and two or more proximal shafts 54. A guide system may further include a slidable guide instrument 56, with a side-mounted guide 58, which may be used to advance a screw (not shown) into bone. In this embodiment, the proximal shafts 54 have a square cross-sectional shape. As described above, the square cross-sectional shape may be used to orient the guide instrument 56 at 90-degree increments.
- Figs. 10A and 10B illustrate another instrument that may be advanced over a facet guide tool or device 20.
- a slidable guide tube 60 with a side-mounted decortication device 62 is shown advancing over the guide tool 20.
- the decortication tool 62 may be used to cut or decorticate vertebral bone, as part of a fixation procedure.
- Various embodiments may include this and/or any other similar instrumentation, such as but not limited to screws, staples, posts in the lateral masses, and/or the like.
- Additional instrumentation such as a rod or plate, may also be advanced over the facet guide tool 20.
- the facet guide tool or device 20 may be used to advance a double-barreled or dual-lumen guide tube device 70, having a side-mounted tube 72, to the cervical spine.
- a drill 74 may be advanced through the side-mounted tube. This guide tube device 70 thus allows for drilling of the lateral mass at the same angle as the facet.
- a facet guide tool 80 may have a distal portion 82 and a proximal shaft portion 84, including a slot 86.
- the slot 86 may be used for advancing a fixation device, such as rod 88 (or plate) and screws 89 for attachment to the rostral and caudal lateral mass.
- a system for accessing and attaching fixation devices to a cervical spine facet 15 may include the guide tool 20 with distal portion 22 and proximal portion 24, as described above (see Figs. 13A-13B).
- Fig. 13C illustrates a proximal end 25 of the tool 20 having opposing sides with a concave shape (A) and a convex shape (B). This shaped proximal end helps to maximize accessible lateral mass area and to lock the rotational position of a sliding guide tube 90 shown in later figures.
- the system may also include an outer, sliding guide tube 90 defining a dual-lumen 92 for receiving both a drill guide 94 and stylet 96 and the guide tool 20.
- the sliding guide tube 90 may be positioned over and slid onto the proximal portion 24 of the guide device 20, and docked or otherwise stabilized on or at the superior lateral mass 100.
- the stylet 96 may be removed from the drill guide 94 (Fig. 13G).
- Fig. 13H depicts an end view of the guide tool 20 and the drill guide 94 within the dual lumen 92 of the sliding guide tube 90.
- the shape of the tool 20 limits rotational movement of the guide tube 90.
- the drill guide 94 provides one or more guide paths 102 through which a drill, such as drill 74 in Fig. 11C, may be advanced through the guide 94.
- This guide tube device 90 thus allows for drilling of the lateral mass at or about the same angle as the facet.
- the drill guide 94 is removed from the guide tube 90 (Fig. 13J).
- a first lumen 104 of the dual lumen tube 90 now provides an opening through which a lateral mass screw (not shown) may be guided for insertion in the pre-drilled location.
- a secondary guide tube could be used in the lumen 104 to more precisely guiding the screw to the pre-drilled location.
- Figs. 13L-13N illustrate the guide tool 20, sliding guide tube 90 and the drill guide 94 inserted in an opposite or rotated orientation (e.g. rotated 180° about the longitudinal axis of the guide tool 20) for use and screw insertion in the inferior lateral mass 106.
- the C7 and Tl and T2 facets have a fixed relationship to the pedicle. All of the above devices, systems and methods may be used to cannulate the pedicle percutaneously, similar to that described for the lateral mass.
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Molecular Biology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462004143P | 2014-05-28 | 2014-05-28 | |
PCT/US2015/032762 WO2015184018A1 (en) | 2014-05-28 | 2015-05-27 | Lateral mass fixation system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3148460A1 true EP3148460A1 (en) | 2017-04-05 |
EP3148460A4 EP3148460A4 (en) | 2018-01-17 |
Family
ID=58161036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15799771.9A Withdrawn EP3148460A4 (en) | 2014-05-28 | 2015-05-27 | Lateral mass fixation system |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3148460A4 (en) |
CN (1) | CN106999216B (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6113602A (en) * | 1999-03-26 | 2000-09-05 | Sulzer Spine-Tech Inc. | Posterior spinal instrument guide and method |
AU2001241612B2 (en) * | 2000-02-22 | 2005-04-07 | Warsaw Orthopedic, Inc. | Instruments and techniques for disc space preparation |
US7555343B2 (en) * | 2004-10-15 | 2009-06-30 | Baxano, Inc. | Devices and methods for selective surgical removal of tissue |
US8025678B2 (en) * | 2008-03-26 | 2011-09-27 | Depuy Spine, Inc. | Interspinous process spacer having tight access offset hooks |
WO2011050140A1 (en) * | 2009-10-22 | 2011-04-28 | Blue Fury Consulting, L.L.C. | Posterior cervical fusion system and techniques |
US8986355B2 (en) * | 2010-07-09 | 2015-03-24 | DePuy Synthes Products, LLC | Facet fusion implant |
-
2015
- 2015-05-27 EP EP15799771.9A patent/EP3148460A4/en not_active Withdrawn
- 2015-05-27 CN CN201580040824.4A patent/CN106999216B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN106999216A (en) | 2017-08-01 |
EP3148460A4 (en) | 2018-01-17 |
CN106999216B (en) | 2020-09-01 |
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