WO2009091960A2 - Séparateur de tissu - Google Patents

Séparateur de tissu Download PDF

Info

Publication number
WO2009091960A2
WO2009091960A2 PCT/US2009/031225 US2009031225W WO2009091960A2 WO 2009091960 A2 WO2009091960 A2 WO 2009091960A2 US 2009031225 W US2009031225 W US 2009031225W WO 2009091960 A2 WO2009091960 A2 WO 2009091960A2
Authority
WO
WIPO (PCT)
Prior art keywords
cannula
blade
instrument
shaft
longitudinal
Prior art date
Application number
PCT/US2009/031225
Other languages
English (en)
Other versions
WO2009091960A3 (fr
Inventor
Joey Camia Reglos
Moti Altarac
Original Assignee
Vertiflex, 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
Priority claimed from US11/362,366 external-priority patent/US8226690B2/en
Priority claimed from US11/586,849 external-priority patent/US20070239159A1/en
Application filed by Vertiflex, Inc. filed Critical Vertiflex, Inc.
Priority to EP09702381A priority Critical patent/EP2252219A2/fr
Priority to CA2711959A priority patent/CA2711959A1/fr
Priority to AU2009206041A priority patent/AU2009206041A1/en
Publication of WO2009091960A2 publication Critical patent/WO2009091960A2/fr
Publication of WO2009091960A3 publication Critical patent/WO2009091960A3/fr
Priority to IL206968A priority patent/IL206968A0/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • 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
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • A61B17/1617—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material with mobile or detachable parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/320036—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes adapted for use within the carpal tunnel
    • 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

Definitions

  • One end of the rigid link element is connected to an anchor inserted in the pedicle of the upper vertebra and the other end of the rod is connected to an anchor inserted in the pedicle of an adjacent lower vertebra.
  • the rod ends are connected to the anchors via coupling constructs such that the adjacent vertebrae are supported and held apart in a relatively fixed position by the rods.
  • two rods and two pairs of anchors are installed each in the manner described above such that two rods are employed to fix two adjacent vertebrae, with one rod positioned on each side of adjacent vertebrae.
  • an instrument comprising a shaft, an actuator connected to the shaft and a blade connected to the distal end of the actuator.
  • the actuator is configured to extend and retract the blade with respect to the shaft and the shaft is configured to be insertable into a cannula having a longitudinal axis and connectable to the cannula such that the blade is capable of longitudinal movement with respect to the cannula.
  • the longitudinal movement with respect to the cannula is controllable and adjustable by the instrument having adjustable stops such that the cut created by the longitudinal movement does not breach the skin.
  • an instrument comprising a retractable blade at a distal end.
  • the instrument is configured to be insertable into a cannula with the blade in a retracted state.
  • the blade is movable subcutaneously by a distance relative to the cannula to create a subcutaneous cut outside the cannula.
  • a system includes a first cannula connectable to a first bone anchor implanted in a first vertebral body.
  • the first cannula has a longitudinal sidewall opening.
  • a second cannula is connectable to a second bone anchor implanted in a second vertebral body.
  • the system includes an instrument insertable into the first cannula.
  • the instrument includes a shaft, an actuator connected to the shaft, and a blade connected to the distal end of the actuator.
  • the actuator is configured to move the blade through the longitudinal sidewall opening into a deployed configuration such that the blade projects through the longitudinal sidewall opening towards the second cannula and the blade is longitudinally movable inside the longitudinal sidewall opening of the cannula by a distance to subcutaneously cut tissue outside the cannula.
  • FIG. Ia illustrates a perspective view of a tissue splitter according to the present invention.
  • FIG. Ib illustrates a cross-sectional view of a tissue splitter according to the present invention.
  • FIG. 2a illustrates a side view of a tissue splitter with blade extended according to the present invention.
  • FIG. 2b illustrates a cross-sectional view of a tissue splitter with blade extended according to the present invention.
  • FIG. 3a illustrates a perspective view of an adjustment collar according to the present invention.
  • FIG. 3b illustrates a side view of an adjustment collar according to the present invention.
  • FIG. 4 illustrates a perspective view of a tissue splitter in conjunction with an access system connected to a pair of bone anchors implanted into adjacent vertebral bodies of a patient' s spine shown in part.
  • FIG. 4 illustrates a perspective view of a tissue splitter in conjunction with an access system connected to a pair of bone anchors implanted into adjacent vertebral bodies of a patient' s spine shown in part.
  • FIG. 5 illustrates a perspective view of a tissue splitter in conjunction with an access system extending through skin and connected to a pair of bone anchors implanted into adjacent vertebral bodies of patient's spine shown in part.
  • FIG. 6a illustrates a side view of a partially deployed blade of a tissue splitter inserted in one of two cannulas connected to bone anchors implanted in adjacent vertebral bodies of a patient's spine.
  • FIG. 6b illustrates a side view of a fully deployed blade of a tissue splitter inserted in one of two cannulas connected to bone anchors implanted in adjacent vertebral bodies of a patient's spine.
  • FIG. 6a illustrates a side view of a fully deployed blade of a tissue splitter inserted in one of two cannulas connected to bone anchors implanted in adjacent vertebral bodies of a patient's spine.
  • FIG. 6c illustrates a side view of a fully deployed blade of a tissue splitter inserted in one of two cannulas connected to bone anchors implanted in adjacent vertebral bodies of patient's spine with the blade pulled proximally to dissect tissue between the two cannulas.
  • FIG. 7 illustrates a perspective view of a fully deployed blade of a tissue splitter inserted in one of two cannulas connected to bone anchors implanted in adjacent vertebral bodies of patient's spine with the blade pulled proximally to dissect tissue subcutaneously between the two cannulas.
  • the tissue splitter 10 includes a handle assembly 12 connected to a shaft assembly 14 and an actuator assembly 16 connected to a blade 18 and an adjustment collar 15 and locking collar 20 connected to the shaft assembly 14.
  • the locking collar 20 is placed over the shaft assembly 14 and permitted to free- float between an adjustment collar 15 and the handle assembly 12.
  • the distal end of the locking collar 20 includes a threaded portion for connecting or locking the locking collar 20 and in turn, the tissue splitter 10 to a cannula or other instrument.
  • An adjustment collar 15 is connected to the shaft assembly 14 and also permitted to slide and be locked with respect to the shaft assembly 14.
  • the adjustment collar 15 is substantially cylindrical in shape and includes a longitudinal slot 44 formed in the sidewall with a plurality of side slots 46 having corresponding adjacent graduations 48.
  • the adjacent graduations 48 correspond to various and approximate lengths of spinal stabilization rods implantable between two bone anchors placed in vertebral bodies.
  • a pin 50 (seen in FIG. 2a) formed on the outer surface of the shaft assembly 14 is configured to travel the longitudinal slot 44 relative to the adjustment collar 15 to position the adjustment collar 15 relative to the shaft assembly 14 or the locking collar 20 by a distance approximately equal to the length of a rod selected for implantation.
  • the adjustment collar 15 is movable with respect to the shaft 14 and its position adjusted and locked from said movement by guiding the pin 50 into any of the side slots 46.
  • the surgeon will slide the adjustment collar 15 longitudinally relative to the shaft assembly 14 such that the pin 50 travels in the longitudinal slot 44. Then, the surgeon will turn the adjustment collar 15 to position the pin 50 in the side slot 46 having the appropriate graduation "45" inscribed next to the side slot 46. So positioned, the pin 50 is approximately the rod length distance from the distal end of the locking collar 20 when connected to a cannula or other instrument through which the instrument is inserted.
  • a stop is defined by the adjustment collar 15 against which movement of the blade 18 is limited to prevent the blade 18 from breaching skin from its subcutaneous position when creating a cut.
  • a blade housing assembly 17 is connected to the shaft assembly 14.
  • the blade housing assembly 17 is threadingly connected to the shaft assembly 14 such that rotation of the proximal end of the blade housing assembly 17 permits the blade housing assembly 17 to longitudinally slide proximally on the shaft assembly 14 to expose, remove and exchange the blade 18.
  • the blade housing assembly 17 is moved distally longitudinally to encase and cover the blade 18 with the proximal end of the blade housing assembly 17 rotated to threadingly re-connect the blade housing 17 to the shaft assembly 14.
  • disposable blades may be employed.
  • FIGs. Ia and Ib show the tissue splitter 10 in an undeployed configuration in which the blade 18 is retracted.
  • FIGs. 2a and 2b show the tissue splitter 10 in a deployed configuration in which the blade 18 is extracted or deployed.
  • the actuator assembly 16 includes a proximal knob 38 connected to an inner shaft 41 which is connected to a back linkage 40 that is connected to the blade 18 which is in turn connected to a front linkage 42.
  • the front linkage 42 is connected to the shaft assembly 14.
  • the inner shaft 41 of the actuator assembly 16 is disposed inside the handle assembly 12.
  • the actuator assembly 16 is in part disposed inside the shaft assembly 14.
  • Rotation of the proximal knob 38 in one direction drives the shaft 41 and connected back linkage 40 toward the distal end of the instrument 10 relative to the handle and shaft assemblies 12, 14 pivoting the blade 18 out from the blade housing assembly 17.
  • Rotation of the proximal knob 38 activates the blade 18 into deployment in which the blade 18 projects outwardly from the distal end of the instrument 10 to expose the blade 18.
  • Rotation of the proximal knob 38 in the opposite direction draws the shaft 41 and connected back linkage 40 proximally, thereby, pivoting the blade 18 to within the confines of the blade housing assembly 17.
  • Rotation of the proximal knob 38 in the opposite direction retracts the blade 18 into an undeployed or retracted position in which the blade 18 is hidden in the blade housing assembly 17.
  • a serrated blade 18 is employed to advantageously cut tissue when the blade 18 is moved.
  • the blade 18 is angled with respect to the shaft assembly 14 or blade housing assembly 17 or cannula when in the extracted deployed state.
  • FIG. 4 there is shown the tissue splitter 10 in conjunction with a minimally invasive, percutaneous rod deployment system 22 attached to a pair of bone anchors 24 that are implanted into adjacent vertebral bodies 26 of a patient's spine 28 shown in part in FIG. 4.
  • the minimally invasive, percutaneous rod deployment system 22 such as that developed by Vertiflex, Inc. and described in detail in U.S. patent application bearing serial number 11/362,366 entitled “Systems and methods for stabilization of bone structures" filed on February 23, 2006 and in U.S.
  • patent application bearing serial number 11/586,849 entitled “Systems and methods for stabilization of bone structures” filed on October 25, 2006, both of which are incorporated herein by reference in their entireties, comprises, in part, of a pair of slotted cannulas 30 with alignment guides 32 seated on top of the cannulas 30. Prior to insertion of a rod, the rod length is determined by the clinician. Also, the outside of the cannulas 30 include depth markers 34 which can be read above the skin 36 (see FIG. 5).
  • the depth that the cannulas are sunk into the patient is typically greater than the length of the rod to be implanted and as such, the cut that the tissue splitter 10 makes at the first cannula is preferably approximately equal to the length of the rod and less than the approximate depth to which the first cannula is sunk into the patient.
  • the adjustment collar 15 is positioned with respect to the shaft assembly 14 by moving the pin 50 along the longitudinal slot 44 and into a side slot 46 that corresponds approximately to the desired length of the cut which may correspond to the length of the rod to be deployed and/or to less than the depth reading at the skin on the outside of the cannulas.
  • a depth marking on the cannula may shown 35 millimeters and the surgeon selected rod length may be 45 millimeters. In such cases, the clinician would select the smaller cut, 35 millimeters, so as to not breach the skin.
  • the tissue splitter 10 Prior to implantation of the rod, the tissue splitter 10 is inserted into a first alignment guide 32 that is connected to a first cannula 30 or in another variation, inserted into a cannula 30 without an alignment guide 32.
  • the tissue splitter 10 is inserted such that the tissue splitter is aligned with a second cannula. Markers on the tissue splitter 10 are provided to aid the user in properly inserting and aligning the tissue splitter 10 into the first cannula 30.
  • a properly oriented tissue splitter 10 is one in which the blade is deployable in a direction toward the other or second cannula 30.
  • the tissue splitter 10 is connected to the alignment guide 32 or directly to the cannula 30 via the locking collar 20 or other means.
  • the tissue splitter 10 is connected by rotation of the locking mechanism 20 which threads to a correspondingly threaded alignment guide 32 or cannula 30.
  • the blade 18 is acutated and deployed by turning the proximal knob 38 of the actuator assembly 16.
  • the blade 18 may be actuated by other means known to one skilled in the art including a push type mechanism for deploying the blade.
  • the blade 18 emerges from the blade housing assembly 17 and through the slot in the first cannula 30 and begins to cut tissue as shown in FIG. 6a.
  • the blade 18 is shown fully deployed.
  • the handle assembly 12 is pulled upwardly by the user in a longitudinal direction as shown by the arrow in FIG. 7 along the cannula inside the cannula slot.
  • the handle assembly 12 that is connected to the shaft assembly 14 which is in turn connected to the blade housing assembly 17 pulls the deployed blade 18 upwardly, thereby, cutting more tissue in an upwardly direction as shown in FIG. 7 and shown progressively in FIGs. 6a-6c.
  • the handle assembly 12 can then be pushed distally and pulled again to repeat the cutting motion as needed.
  • Upward translation of the blade 18 is limited by at least one stop relative to the cannula.
  • Downward translation of the blade 18 in one variation is also limited by at least one stop.
  • After a cut is made with the tissue splitter 10 in the first cannula it may be removed and placed into the second cannula and a second cut made.
  • the second cut the same length or the adjustment collar 15 may be adjusted for a shorter cut, which may be determined by the clinician as necessary where skin depth is smaller than the desired rod length or when rod length is longer than the blade length.
  • the locking collar 20 which is connected to the alignment guide 32 is free- floating with respect to the shaft assembly 14 allowing the shaft assembly 14 to translate longitudinally within the locking collar 20 between a first stop and a second stop, thereby, limiting longitudinal blade movement.
  • One stop is defined by the adjustment collar 15 which, in one variation, is the proximal end 52 of the adjustment collar 15, against which a stop defined by the locking collar 20 abuts arresting further longitudinal translation in the proximal direction of the shaft/blade relative to the locking collar 20.
  • another stop is defined the handle assembly 12 which, in one variation, is the distal end of the handle assembly 12 against which a stop defined by the locking collar 20 abuts arresting further longitudinal translation in the distal direction of the shaft/blade relative to the locking collar 20.
  • the blade 18 is allowed limited longitudinally travel relative to the cannula between two stops that are defined by the instrument.
  • One of the stops is adjustable by the user such as the adjustment collar to customly vary the distance traveled by the blade relative to the cannula so as to not breach skin and maintain a subcutaneous incision.
  • the adjustment collar 15 can be moved and locked into position with respect to the shaft assembly 14 and as such the movable adjustment collar 15 advantageously adjusts the distance between the first stop that is defined by the adjustment collar 15 and a second stop.
  • the first and second stops between which the locking collar 20 is allowed to move also limits travel of the blade 18 with respect to the locking collar 20 which when connected to the cannula limits travel of the blade 18 in turn with respect to the cannula 30 as well, thereby, preventing the blade from breaching the skin surface or cutting a length that is too long.
  • the position of the alignment collar 15 is selected to the length of the cut according to the length of the rod to be implanted and/or marker readings on the outside of the cannulas. Adjusting the position of the alignment collar 15 translates the alignment collar 15 along the shaft assembly 14 which thereby varies the stop defined by the alignment collar 15 and hence the travel distance of the shaft and handle assemblies with respect to the locking collar 20. As shown in FIGs.
  • the blade 18 is angled downwardly towards the second cannula 30. Also, the blade 18 is also wider proximate to its point of attachment relative to the distal end of the blade which is narrower. As a result of this angle and width of blade, the length of the cut created by the tissue splitter near the first cannula is longer relative to the length of the cut created by the tissue splitter 10 near the first cannula 30. This length differential is advantageous because the rod is first seated in the first bone anchor and rotated through a slot in the first cannula towards the second cannula.
  • tissue splitter can be placed on the second alignment guide and tissue can be further dissected. With the tissue splitter removed, the rod is inserted into one of the first or second cannulas and rotated through the slotted cannula toward the other of the first or second cannula and connected to the first and second bone anchors.

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

Abstract

L'invention concerne un séparateur de tissu destiné à créer une coupe sous-cutanée. Le séparateur de tissu est insérable dans une canule à fente qui est placée via une incision vers un emplacement à proximité de la colonne d'un patient. Un actionneur à l'extrémité proximale de l'instrument projette la lame située à l'extrémité distale depuis son état rétracté à travers la fente de la canule vers un état extrait pour couper de façon sous-cutanée le tissu en un emplacement extérieur à la canule. La lame est mobile à l'intérieur de la fente de la canule sur une distance telle que la coupe créée par la lame reste sous-cutanée et ne perfore pas la peau du patient. La distance est ajustable sur la longueur de la coupe et est limitée par un collier d'ajustement. Le séparateur de tissu est idéalement conçu pour créer une voie pour l'implantation sous-cutanée d'une tige de stabilisation rachidienne entre deux ancres osseuses placées dans des corps vertébraux.
PCT/US2009/031225 2005-07-22 2009-01-16 Séparateur de tissu WO2009091960A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09702381A EP2252219A2 (fr) 2008-01-16 2009-01-16 Séparateur de tissu
CA2711959A CA2711959A1 (fr) 2008-01-16 2009-01-16 Separateur de tissu
AU2009206041A AU2009206041A1 (en) 2008-01-16 2009-01-16 Tissue splitter
IL206968A IL206968A0 (en) 2008-01-16 2010-07-13 Tissue splitter

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US70166005P 2005-07-22 2005-07-22
US11/362,366 US8226690B2 (en) 2005-07-22 2006-02-23 Systems and methods for stabilization of bone structures
US11/586,849 US20070239159A1 (en) 2005-07-22 2006-10-25 Systems and methods for stabilization of bone structures
US1147808P 2008-01-16 2008-01-16
US61/011,478 2008-01-16

Publications (2)

Publication Number Publication Date
WO2009091960A2 true WO2009091960A2 (fr) 2009-07-23
WO2009091960A3 WO2009091960A3 (fr) 2009-10-15

Family

ID=40624478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/031225 WO2009091960A2 (fr) 2005-07-22 2009-01-16 Séparateur de tissu

Country Status (1)

Country Link
WO (1) WO2009091960A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8226690B2 (en) 2005-07-22 2012-07-24 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for stabilization of bone structures
US8523865B2 (en) 2005-07-22 2013-09-03 Exactech, Inc. Tissue splitter
US8551142B2 (en) 2004-10-20 2013-10-08 Exactech, Inc. Methods for stabilization of bone structures
WO2014089198A1 (fr) * 2012-12-05 2014-06-12 Smith & Nephew, Inc. Instrument chirurgical
US10105150B2 (en) 2013-03-12 2018-10-23 Smith & Newphew, Inc. Retro guidewire reamer
US10357259B2 (en) 2012-12-05 2019-07-23 Smith & Nephew, Inc. Surgical instrument

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8096996B2 (en) 2007-03-20 2012-01-17 Exactech, Inc. Rod reducer

Citations (6)

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Publication number Priority date Publication date Assignee Title
US5062845A (en) * 1989-05-10 1991-11-05 Spine-Tech, Inc. Method of making an intervertebral reamer
US5449355A (en) * 1993-11-24 1995-09-12 Valleylab Inc. Retrograde tissue splitter and method
US6261293B1 (en) * 1998-05-06 2001-07-17 Cortek, Inc. End cut apparatus for implanting spinal fusion device
US6740090B1 (en) * 2000-02-16 2004-05-25 Trans1 Inc. Methods and apparatus for forming shaped axial bores through spinal vertebrae
US20040133208A1 (en) * 2000-09-01 2004-07-08 Synthes (Usa) Tools and methods for creating cavities in bone
US20050137602A1 (en) * 2003-10-23 2005-06-23 Assell Robert L. Method and apparatus for spinal distraction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062845A (en) * 1989-05-10 1991-11-05 Spine-Tech, Inc. Method of making an intervertebral reamer
US5449355A (en) * 1993-11-24 1995-09-12 Valleylab Inc. Retrograde tissue splitter and method
US6261293B1 (en) * 1998-05-06 2001-07-17 Cortek, Inc. End cut apparatus for implanting spinal fusion device
US6740090B1 (en) * 2000-02-16 2004-05-25 Trans1 Inc. Methods and apparatus for forming shaped axial bores through spinal vertebrae
US20040133208A1 (en) * 2000-09-01 2004-07-08 Synthes (Usa) Tools and methods for creating cavities in bone
US20050137602A1 (en) * 2003-10-23 2005-06-23 Assell Robert L. Method and apparatus for spinal distraction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8551142B2 (en) 2004-10-20 2013-10-08 Exactech, Inc. Methods for stabilization of bone structures
US8226690B2 (en) 2005-07-22 2012-07-24 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for stabilization of bone structures
US8523865B2 (en) 2005-07-22 2013-09-03 Exactech, Inc. Tissue splitter
WO2014089198A1 (fr) * 2012-12-05 2014-06-12 Smith & Nephew, Inc. Instrument chirurgical
CN105101892A (zh) * 2012-12-05 2015-11-25 史密夫和内修有限公司 手术器械
US10357259B2 (en) 2012-12-05 2019-07-23 Smith & Nephew, Inc. Surgical instrument
US10105150B2 (en) 2013-03-12 2018-10-23 Smith & Newphew, Inc. Retro guidewire reamer

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