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Joint distractor

Subclass of:

606 - Surgery

606001000 - INSTRUMENTS

606053000 - Orthopedic instrumentation

606086000 - Means for use in bone reperation

Patent class list (only not empty are listed)

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DocumentTitleDate
20110196378METHOD AND APPARATUS FOR DISTRACTING A JOINT, INCLUDING THE PROVISION AND USE OF A NOVEL FLUID JOINT SPACER - A fluid joint spacer comprising a body having means for receiving a pressurized fluid from an external source and applying that pressurized fluid against a joint element so as to create a flowing fluid bearing within the joint.08-11-2011
20090076515INSTRUMENT FOR DISIMPACTING A DAMAGED VERTEBRAL BODY - The invention relates to an instrument for disimpacting a damaged vertebral body, comprising a unit, whose effective length can be adjusted in a longitudinal direction and whose underside can be positioned on the skin above a damaged vertebral body. According to the invention, supports that can be displaced in relation to one another are located on the adjustable unit, the distance between the exteriors of the two supports that face away from one another in the longitudinal direction defining the effective length of the adjustable unit. The adjustment range of the effective length is dimensioned in such a way that the supports can be positioned between lever elements, which are provided for the distraction of the vertebral bodies lying cranially and caudally adjacent to the damaged vertebral body and the supports are designed to maintain the mutual distance between the lever elements.03-19-2009
20100076444Bone distraction device having a quick release disengagement mechanism - A bone distraction device having a ratchet and pawl mechanism such that incremental rotation is allowed in one direction and prevented in the other, and further having a quick release mechanism such that the ratchet and pawl mechanism can be released to allow free rotation in both directions.03-25-2010
20130085501SPACER WITH HEIGHT AND ANGLE ADJUSTMENTS FOR SPACING VERTEBRAL MEMBERS - A device to space vertebral members that may include a deploying device with a first member with an elongated first shaft and a first body at an end of the first shaft, a second member with an elongated second shaft that extends around the first shaft and a second body at an end of the second shaft, and a third member with an elongated third shaft that extends around the second shaft and a third body at an end of the second shaft. The device may include a first plate positioned on a first side of the deploying device, and a second plate positioned on a second side of the deploying device. First, second, and third jointed linkages may be spaced apart along the deploying device and each having a pair of links and each having a first end attached to the first plate, a second end attached to the second plate, and an intermediate joint connecting the pair of links together and being attached to the deploying device.04-04-2013
20090157084COLLAPSIBLE AND EXPANDABLE DEVICE AND METHODS OF USING SAME - The present invention provides a device (06-18-2009
20090125030Dilator - A dilator that facilitates implantation of an interspinous spacer is provided. The dilator includes a proximal portion and a tapered distal portion interconnected by an elongated body portion. The tapered distal portion is ideally suited for splitting ligamentous tissue for creating a posterior midline pathway through the supraspinous ligament as well as for distracting the adjacent spinous processes. Two oppositely located and longitudinally extending channels or grooves are formed in the outer surface of the dilator for stabilizing the dilator with respect to the spinous processes. An accompanying cannula together with the dilator form a system for the distraction of the adjacent spinous processes, stabilization of the spinous processes with respect to the system and creation of a working channel for the implantation of an interspinous spacer.05-14-2009
20100094305SPINAL DISTRACTION SYSTEM - A spinal distraction system, according to one embodiment, includes an adjustable spinal distraction rod comprising first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members. The system includes an anchor rod configured for mounting to a bone of a subject, the anchor rod comprising a threaded portion and a ball disposed at one end thereof and a nut disposed on the threaded portion of the anchor rod the nut having a first contact surface. The system further includes a locking joint having a cup portion configured to receive an end of the first member, the cup portion comprising a second contact surface, wherein tightening of the nut binds the first and second contact surfaces to thereby lock the joint and prevent articulation and wherein the second member is configured for mounting to a second bone of a subject.04-15-2010
20100094303SPINAL DISTRACTION SYSTEM - A spinal distraction system, according to one aspect, includes an adjustable spinal distraction rod comprising first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members. The system includes an anchor rod configured for mounting to a bone of a subject, the anchor rod having one or more spring-biased tabs disposed at one end thereof, and a connector having first end and a second end, the first end having a receiving cup configured for detachable mounting on the anchor rod, wherein the one or more spring-biased tabs are configured to engage with an inner surface of the receiving cup, the connector having a second end operatively coupled to an end of a first member and wherein the second member is configured for mounting to a second bone of a subject.04-15-2010
20090043311Offset distraction device and method of use - A distraction device employing a bone fastener and an axially displaced post to provide enhanced access to a surgical site. The distraction device is comprised of a rigid arm or link having a bone fastener, e.g., screw, extending from a first end and a post extending oppositely to the fastener, from a second end. The bone fastener is configured so that when anchored to a patient's bone, the rigid arm is able to pivot around the fastener to enable a surgeon to position the post for optimal access.02-12-2009
20090306672Alif inserter/distractor - Apparatus and method for an instrument for use in an anterior lumbar interbody fusion (ALIF) procedure for distraction of adjacent vertebrae and insertion of a vertebral body replacement (VBR) implant. The instrument includes a hollow body having a proximal end and a distal end, an inserter shaft positioned within the body configured to removably engage a VBR implant near the distal end of the body, an actuatable handle coupled to the body, the handle being configured to engage the inserter shaft to advance the VBR implant in a distal direction during handle actuation, and a pair of opposed distraction arms removably coupled to the distal end of the body, the distraction arms having paddle tips configured to fit between adjacent vertebrae, the distraction arms being movable from a closed position to an open position during distal advancement of the VBR implant between the distraction arms.12-10-2009
20090306671Facet joint implants and delivery tools - A spinal joint distraction system is disclosed and may include a driver assembly with a tubular shaft, a pair of implant holder arms, an implant distractor, an internal actuator, and a distractor knob, the system also including a delivery device with a tubular shaft, a receiving assembly, and a pair of forks, where the delivery device is adapted for slidable insertion of the driver assembly, the system also including an implant, a chisel, and an injector. Several embodiments of an implant are disclosed as well a method of placing an implant.12-10-2009
20130072939Compessor Distractor Tool - A combined compressor and distractor tool is provided that includes a mechanism capable of switching the mode of operation of the tool from a compression tool to a distraction tool. The tool includes engagement tips and handles at opposed ends of the tool that are pivotally connected to a central shaft. A saddle is slidably mounted on the shaft between and pivotally connected to the handles. When the saddle is engaged with the shaft in a before center position, squeezing the handles results the movement of the shaft forwardly to operate the engagement tips as a distractor. However, when the saddle is engaged with the shaft in a past, or over center position, squeezing the handles results in the movement of the shaft rearwardly to operate the engagement tips as a compressor.03-21-2013
20110015638SPINAL-COLUMN DISTRACTOR - A spinal-column distractor (01-20-2011
20090270871Impulsive percussion instruments for endplate preparation - A hand-held instrument, with a rotary power input to a camshaft, has cam and follower arrangement to provide a reciprocating shaft output. A cutter is provided on the output shaft. In one example, rotating cam percussion is transmitted to the cutter by engaging the cutter with the tissue to be cut, and pushing the instrument forward toward the cutter. In another example, rotating cam percussion is transmitted to the cutter by engaging the cutter with the tissue to be cut, and pulling the instrument back toward the user while maintaining engagement of the cutter with the tissue. In both examples, the cutter remains in idle condition until an axially directed load, forward in the one example, or backward on the other example, is placed on the cutter by moving the instrument forward or backward, respectively, while the camshaft is rotating. A distractor with frame is used to spread and maintain space between vertebral bodies, enabling entrance of the cutter.10-29-2009
20090270870Dynamic distractor - A dynamic distractor is described for distracting an intervertebral space and determining a size of an artificial intervertebral disc to be implanted in the intervertebral space.10-29-2009
20120226284AUTOMATIC LOCKING CASPER DISTRACTOR - A vertebral distractor system includes a crossbar and a first distractor arm having a first end portion coupled to the crossbar and a second end portion with a first bore configured to axially receive a first coupling portion of a first pin. A second distractor arm includes a third end portion coupled to the crossbar and a fourth end portion with a second bore configured to receive a second coupling portion of a second pin. A first pin locking mechanism is configured to couple the first coupling portion and the first distractor arm within the first bore such that when the first coupling portion and the first distractor arm are coupled, movement of the first pin outwardly of the first bore is not allowed.09-06-2012
20090036896ENDO-DISTRACTOR - The invention relates to a device for the distraction of bones or bone segments. The device comprises an anchoring screw having a longitudinal axis, a screw tip, a screw end for rotatably driving the anchoring screw, a threaded shank which adjoins the screw tip and has a screw thread, and a screw shank adjoining the screw end; and a distraction sleeve axially displaceable on the screw shank including a rear end, a front end, a through-bore extending coaxially therebetween, an external thread adjoining the front end, and a coupler portion formed in the rear end for receiving a driving tool. The anchoring screw comprises a collar positioned between the threaded shank and the screw shank that radially projects at least from the screw shank and which serves as an axial stop for the front end of the distraction sleeve when the distraction sleeve is positioned over the screw shank. The through-bore has a boring section with an enlarged cross-section which adjoins the rear end provided with a lateral surface and a seal ring coaxially arranged between the lateral surface and the screw shank.02-05-2009
20090234362OFFSET OPPOSING ARM SPINAL IMPLANT DISTRACTOR/INSERTER - Provided herein is a vertebral distractor-inserter comprising a pair of arms comprising a first arm having a proximal end and a distal end and a second arm having a proximal end and a distal end, wherein the distal end of the first opposing arm is laterally offset from the distal end of a second arm thereby comprising a pair of laterally offset opposing arms, a driving rod extending between the pair of laterally offset opposing arms, and a drive mechanism in mechanical communication with the driving rod. A vertebral distractor-inserter comprising a pair of opposing arms, a housing in mechanical communication with the arms and rotatable about an axis extending between the arms, and a driving rod extending through at least a portion of the housing and between the arms. A vertebral distractor-inserter adapted for single-handed use. A vertebral distractor-inserter having an implant depth adjustor. Methods for distracting adjacent vertebrae and inserting an implant using the device described herein.09-17-2009
20090234361Tissue Distraction Device - An apparatus and method is provided for distracting, in a given direction, and supporting opposed endplates of a vertebral body. A plurality of wafers are consecutively inserted within the vertebral body between the two endplates to create a column of wafers. The column of wafers is oriented between the endplates so as to expand in the given direction as the wafers are consecutively added to the column. 09-17-2009
20100087825Advanced Intra-spinal Decompression Implant - A new Intra-spinal decompression implant is introduced that comprises of two plate attachments to a titanium metal implant that fits between the spinous processes of the vertebrae in the lower back, decompressing the neuro elements. The invention has a number of new design features including: double axis adjustable side plates, stepped conical tipped body and piercing tips on side plates, among many mentioned in this disclosure, that improves the quality of the surgery and the result for the patient. More examples are given in this application.04-08-2010
20100087826Tissue Distraction Device - An apparatus and method for distracting, in a given direction, and supporting two tissue surfaces is provided. A plurality of wafers are consecutively inserted using a wafer insertion apparatus between the two tissue surfaces to create a column of wafers. A detachable wafer assembly is provided that includes a base wafer initially associated with a track assembly of a wafer insertion apparatus. The base wafer is dislodged from the track assembly so that the base wafer is left within the distraction site as the track assembly is removed. A top cap wafer is provided that is situated at the top of the wafer stack, in which the top cap wafer is larger than the remaining wafers to form a gap surrounding the stack to receive biologic material.04-08-2010
20090131943MEDICAL INSTRUMENT FOR DISTRACTION OR COMPRESSION - A medical instrument for use in orthopedic distraction or compression. The instrument has a pair of handles and a pair of blades removably attached to an actuator. The handles and the blades may be attached on either side of the actuator such that the blades may be used on the left or right side of the spine or other structure being distracted or compressed and such that the handles may be removed thus freeing up space in the incision or portal for other instruments. The handles and the blades are connected to the actuator through a ratchet and pawl mechanism whereby pressing the handles together causes the blades to be spread apart at their distal end while maintaining a window between the blades at their proximal ends to optimize visualization of the operative site. Movement of the blades at their proximal ends is amplified at their distal ends.05-21-2009
20120191100DISTRACTOR DEVICE FOR JOINTS - A distractor device (07-26-2012
20090099569Intervertebral implant - In the case of an intervertebral implant with at least one abutment element forming a vertebral body abutment surface, in which the vertebral body abutment surface comprises at least two relatively movable parts, which in a first insertion position are arranged in relation to one another so that they jointly assume a small cross-section, and in a second implantation position so that the cross-section of the vertebral body abutment surface is increased in size in relation to the insertion position, and with an adjusting device for moving the movable parts from the insertion position into the implantation position, to simplify the adjustment of the movable parts from the insertion position into the implantation position, it is proposed that the adjusting device comprises at least one flexible pull element, which acts on one of the relatively movable parts and when pulled moves this relative to the other part into the implantation position.04-16-2009
20100114103APPARATUS AND METHODS FOR ALTERATION OF ANATOMICAL FEATURES - Systems and methods are disclosed for manipulating an anatomical feature within the body of the patient. An implant such as an internal jackscrew is implanted at the anatomical and has first and second attachment points that secure to spaced-apart locations on the anatomical feature. An internal motor is coupled to the jackscrew, and is configured to drive motion of the jackscrew to manipulate the anatomical feature. The system further includes an external driver that is inductively coupled to the internal motor to manipulate the anatomical feature.05-06-2010
20110166580Bone Compression And Distraction Apparatus - A bone compression and distraction apparatus comprising a body, a worm screw and left and right wire attachments. The body defines an elongated tubular member with a first end and a second end. The worm screw is positioned within the body. The worm screw has right hand threads extending from a central region to a first end thereof and left hand threads extending from the central region to a second end thereof. The right wire attachment threadedly engages the right hand threads. The left wire attachment threadedly engages the left hand threads. Rotation of the worm screw either directs the right and left wire attachments toward each other or away from each other.07-07-2011
20090082775Spondylolisthesis reduction system and method - A percutaneous spondylolisthesis reduction instrument and method are disclosed for minimally invasive surgery. The spondylolisthesis reduction instrument includes tangs threadingly connected to an upper knob at the proximal end and configured to connect with a tower construct at the distal end. When connected to a tower which is attached to a bone fastener assembly implanted in a vertebral body, rotation of the upper knob retracts the tangs and the connected tower construct and vertebral body to reduce spondylolisthesis.03-26-2009
20090248026BONE FIXATED, ARTICULATED JOINT LOAD CONTROL DEVICE - A load control device can be attached to bones on either side of an articulated joint in order to control the forces and loads experienced by the joint. The device comprises an apparatus for controlling the load on articular cartilage of a human or animal joint and includes: a first fixation assembly for attachment to a first bone; a second fixation assembly for attachment to a second bone; a link assembly coupled to the first fixation assembly by a first pivot and coupled to the second fixation assembly by a second pivot, the first and second fixation assembly thereby each being angularly displaceable relative to the link assembly. The apparatus enables a clinician to effectively control the environment of cartilage in a joint during a treatment episode.10-01-2009
20120239046METHOD AND APPARATUS FOR DISTRACTING A JOINT - A joint-spacing balloon catheter comprising: 09-20-2012
20090088764DUAL PIVOT INSTRUMENT FOR REDUCTION OF A FIXATION ELEMENT AND METHOD OF USE - A spinal fixation element fixation reduction system is provided herein. In general, the system can include a cap element with a bore having a central axis extending therethrough wherein the cap element is configured to releasably engage any type of surgical device (e.g., an access sleeve, a vertebral body rotator, etc.). Further, the system can include a driver configured to be slidably and removably positioned through the cap element. The system can also include an actuator configured to apply a force to the driver substantially along the central axis of the cap element thereby moving the driver in a distal direction so as to effect reduction of a spinal fixation element into a bone anchor. Additionally, a method of reducing a spinal fixation element into a bone anchor is also provided wherein the method can be performed as a minimally invasive surgical procedure or as an open procedure.04-02-2009
20090182339Tissue Distraction Device - An apparatus and method for distracting, in a given direction, and supporting two tissue surfaces. A plurality of wafers are consecutively inserted between the two tissue surfaces to create a column of wafers. The column of wafers is oriented between the tissue surfaces so as to expand in the given direction as the wafers are consecutively added to the column.07-16-2009
20080287955Distractor for use in spinal surgery and method of use thereof - Apparatus and a method of inserting spinal implants is disclosed in which an intervertebral space is first distracted, a hollow sleeve having teeth at one end is then driven into the vertebrae adjacent that disc space. A drill is then passed through the hollow sleeve removing disc and bone in preparation for receiving the spinal implant which is then inserted through the sleeve.11-20-2008
20090088766Distraction Osteogenesis Methods and Devices - Methods and devices for distraction osteogenesis are disclosed employing an energy storage device and a controlled release of energy to provide a separating force. For example, bone expansion devices can include a first anchor element attachable to a first segment of bone, a second anchor element attachable to a second segment of bone, and an actuator for applying a separating force between the first and second anchor elements. The actuator can include a potential energy storage device and a controller for releasing energy from the energy storage device to provide the separating force.04-02-2009
20090088765Spinal Interbody Distractor - A spinal interbody distractor is provided that is configured to provide distraction of adjacent vertebrae after implantation within a spinal disc cavity through manual rotation of the distractor once implanted. Such implantation is preferably, but not necessarily, through minimally invasive surgical techniques. In one form, the distractor is configured to be rotated 90° to 180° after implantation to provide distraction of adjacent vertebrae. The distractor has a lateral side to lateral side height of a first length and a superior end to inferior end height of a second length that is greater than the first length. This configuration allows the distractor to be inserted into a spinal disc cavity having an opening with a height that is smaller than an end height of the spinal disc cavity after implantation thereof, thereby providing distraction of adjacent vertebrae. The spinal interbody distractor may have one or more cavities, areas, openings and/or bores for spinal fusion material when the distractor is used as a fusion body. The spinal interbody distractor is made from a biocompatible material such as a thermoplastic (e.g. PEEK), a polymer, metal, combination thereof or otherwise, such as desired and/or is appropriate.04-02-2009
20090275952DISTRACTOR - An instrument for distracting and/or compressing adjacent vertebrae is described. The instrument includes a yoke, a first blade movably mounted to the yoke, a second blade mounted to the yoke and an adjustment system. The yoke, the first blade and the second blade form a working channel for the instrument. The adjustment system of the instrument is configured to adjust a spacing between the first blade and the second blade by selectively moving the first blade relative to the second blade to distract and/or compress adjacent vertebrae when the first blade and the second blade have been secured to the adjacent vertebrae. The instrument may include a depth stop system that limits an insertion depth of an associated tool inserted into the working channel of the instrument. The adjustable depth stop system includes a releasable catch for securing a stop element of the associated tool. A position of the releasable catch relative to the working channel is adjustable to vary the insertion depth of the associated tool.11-05-2009
20110270258METHOD FOR SCULPTING THE SURFACE OF A JOINT - Methods and devices for sculpting bones, particularly in preparation for implanting prosthetic devices to replace articulating bone joint surfaces. Improved bone removal devices including burr mills driven by gears and loop drives are provided. Reciprocating cutters and belt cutters are also provided. Some devices have either integral or removable expandable portions to vary the force and bone resection depth. Devices can have irrigation ports and plenums to remove bone fragments. Some cutters are dual cutters, adapted to remove bone in two or more regions, such as the knee joint, simultaneously.11-03-2011
20100280519IMPLANTABLE DISTRACTOR WHOSE LENGTH CAN BE MODIFIED WITHOUT REOPERATION AND WHICH HAS A J-SHAPE - This distraction device comprises a rod (11-04-2010
20100145349Systems and Methods for Compressing and Distracting Vertebrae of the Spinal Column - Spinal surgical systems include a compressor mountable to a first vertebra and positionable relative to a fulcrum mountable to a second vertebra. The compressor and fulcrum are manipulated relative to one another to compress the first and second vertebrae. The systems further include a distractor mountable to a first vertebra and positionable relative to a fulcrum mountable to a second vertebra. The distractor and fulcrum are manipulated relative to one another to distract the first and second vertebrae.06-10-2010
20110270257Spondylolisthesis correction apparatus and method - An apparatus and method are provided that allow for the realignment and stabilization of adjacent vertebrae. An implant of this invention both repositions adjacent vertebrae and remains in situ to maintain the new position. The implant has two halves which are interlocked such that they can slide horizontally with respect to each other. Movement of the implant halves and their respective positions are controlled by set screw within the implant. The implant includes radial anchors which fit into alignment slots made in the misaligned vertebra by the disclosed method. The set screws are used to advance the halves of the implant which in turn move the misaligned vertebrae back into correct positions. The correct position of the vertebrae is locked in place through a nut and a plate.11-03-2011
20080294171Device and method for lumbar interbody fusion - A method for performing percutaneous interbody fusion is disclosed. The method includes the steps of inserting a guide needle posteriorly to the disc space, inserting a dilator having an inner diameter slightly larger than the outer diameter of the guide needle over the guide needle to the disc space to enlarge the disc space, and successively passing a series of dilators, each having an inner diameter slightly larger than the outer diameter of the previous dilator, over the previous dilator to the disc space the gradually and incrementally increase the height of the disc space. Once the desired disc height is achieved, the guide needle and all the dilators, with the exception of the outermost dilator, are removed. An expandable intervertebral disc spacer is then passed through the remaining dilator and positioned in the disc space. The disc spacer is expanded to the required disc height, and then a bone matrix is passed through the dilator to fill the disc space. The dilator is then removed. An expandable intervertebral disc spacer is also disclosed, having a tapered bore that causes greater expansion of one end of the spacer with respect to the other. A kit for performing the percutaneous interbody fusion procedure is also disclosed.11-27-2008
20080249528Rotating Interspinous Device - The invention concerns an implant which consists in a device used between the spinous processes to produce a distraction and a decompression. It consists of two separate parts, one female (10-09-2008
20080269758IMPLANTABLE DISTRACTOR - A spinal implant for stabilizing two adjacent vertebrae having a damaged disc therebetween is assembled in situ. An elongated tool is used to insert a flat U-shaped distractor in the disc space through a low profile incision with both legs of the U-shaped distractor contacting both end plates of the adjacent vertebrae. The tool is rotated 90 degrees rotating the distractor 90 degrees so that each leg of the distractor contacts one end plate of the adjacent vertebrae, respectively, to restore intervertebral space. An elliptical bone tray is slid along the tool to seat within the U-shaped distractor. The tool is removed and a retainer replaces it to lock the bone tray and the distractor together. A screw is used to lock the bone tray to the distraction device, the screw slides down the cannula which is the tool inserted over the rod that the distraction implant is attached to.10-30-2008
20080215058Spine distraction implant and method - A spine distraction implant alleviates pain associated with spinal stenosis and facet arthropathy by expanding the volume in the spine canal and/or neural foramen. The implant provides a spinal extension stop while allowing freedom of spinal flexion.09-04-2008
20120143201Devices and Methods for Treating Bone - A device is disclosed for reducing a vertebral compression fracture, comprising a superior end plate and an inferior end plate disposed along a vertical axis. The superior end plate and the inferior end plate are slidably separable in a vertical direction along the vertical axis. An interior chamber is provided in fluid communication with a port extending from an exterior to the interior chamber. The device is deployable within a vertebral body and expandable within the vertebral body by injecting a flowable material into the interior chamber thereby displacing the superior and inferior end plates along the vertical axis.06-07-2012
20080262501Multi-function corpectomy instrument - A multi-functional surgical instrument assembly for installing an implant between adjacent bone structures is disclosed that is capable of distracting adjacent bone structures, generating a measurement for a prosthetic implant, and installing the prosthetic implant without being removed from the patient. The surgical instrument includes a frame having a pair of opposing distracter arms movable toward or away from one another to a predetermined setting indicative of a height requirement of the implant. A pair of opposing spreader support segments is connected with a respective distal end of the distracter arms and extend downwardly a predetermined distance in relation to the distracter arms. A pair of opposing implant guide segments is connected with a distal end of the opposing spreader support segments. An inserter is detachably connected with the prosthetic implant, wherein the prosthetic implant is positioned between the opposing implant guide segments using the inserter.10-23-2008
20090177204Apparatus and Methods for Separating Internal Bone Fixation Device from Introducer - Apparatus and methods for separating an internal bone fixation device from an introducer are disclosed herein. A device for separating an internal bone fixation device from an introducer includes a functional portion having an outer shaft surrounding and controlling operation of a cutting mechanism; and a control portion having an actuating mechanism for initiating activation of the outer shaft.07-09-2009
20090177205METHODS AND APPARATUS FOR ACCESSING AND TREATING THE FACET JOINT - Methods and systems are disclosed for accessing and treating the interior of the facet joint for vertebral distraction and immobilization. The systems include a number of tools that facilitate access to the facet joint, distraction of the articulating decortication of the articulating surfaces, and delivery of implants and agents into the facet joint for fusion.07-09-2009
20090198241SPINE DISTRACTION TOOLS AND METHODS OF USE - An apparatus includes a measurement tool having a size configured to change when the measurement tool is moved between a first configuration and a second configuration. The measurement tool includes a first spacer member and a second spacer member configured to move relative to each other when the tool is moved between the first and second configurations. The measurement tool has a distal actuator having a first actuator surface matingly and movably coupled to the first spacer member, and a second actuator surface matingly and movably coupled to the second spacer member. A proximal actuator is coupled to a proximal end portion of the elongate member and is configured to rotate about an axis substantially parallel to at least a portion of a center line of an elongate member to move the distal actuator. The distal actuator is configured to move the first spacer member relative to the second spacer.08-06-2009
20090099568DEVICE AND METHOD FOR VARIABLY ADJUSTING INTERVERTEBRAL DISTRACTION AND LORDOSIS - A removably insertable surgical apparatus is configured for insertion between adjacent vertebrae during spinal surgery and adjusted in-situ to produce varying degrees of distraction, neural-decompression, lordotic, kyphotic and/or scoliotic adjustment in the spine.04-16-2009
20090005784SPINAL IMPLANT DISTRACTOR/INSERTER - A method for distracting a pair of adjacent vertebrae and inserting an implant within the intervertebral space between the adjacent vertebrae using a posterior angle is described. The method employs a vertebral distractor-inserter comprising a housing, a pair of opposing arms in mechanical communication with the housing, a driving rod extending through at least a portion of the housing and between the arms, wherein the driving rod comprises an axis and a surface with a plurality of angled ratchet teeth on at least a portion of the surface, and a ratchet drive mechanism in mechanical communication with the driving rod.01-01-2009
20090209965SPINAL DECOMPRESSION SYSTEM - A device useful for spinous process decompression includes a pair of prongs which can be moved apart from each other by rotation of a gear which mates with a threaded rod.08-20-2009
20090192514IMPLANTABLE DISTRACTION OSTEOGENESIS DEVICE AND METHODS OF USING SAME - An osteogenesis distraction device for securement to separate bone segments in the body of a patient and operative to generate new bone between said bone segments by the gradual application of a distraction force, the device comprising attachment members securable to separate bone segments and moveable in relation to each other to generate a distraction force, a power source for powering relative movement of the attachment members, and wherein the entire device, including the attachment members and power source, is dimensioned for implantation entirely subdermally in the body of a patient.07-30-2009
20090131944MIDFACE DISTRACTOR - An external midface distractor is disclosed for attachment to the bones of a patient's cranium and midface region for performing an osteogenesis procedure to gradually lengthen a portion of the craniofacial skeleton. The midface distractor generally includes an external halo assembly for engaging the patient's cranium, a central adjustment assembly, a vertical central rod, at least one horizontal cross piece assembly including at least one distraction screw, and at least one bone engaging portion which is mounted to the targeted facial bone to be distracted. The midface distractor may also include various individual adjustment mechanisms that provide surgeons greater and more precise control over the distraction vector than is available with current devices. That is, the midface distractor may provide surgeons with additional anterior-posterior and medial-lateral adjustments, thus permitting surgeons to more precisely and accurately control the direction of distraction. The midface distractor may also permit surgeons to easily and accurately alter the direction of distraction after the distraction procedure has commenced thereby providing surgeons the ability to readjust the ultimate vector of distraction anytime during the procedure, as necessary. Methods are provided for using the distractor to conduct a distraction procedure.05-21-2009
20090018545Automatic Bone Traction Device - An automatic bone traction device for correction bone deformities is disclosed. The automatic bone traction device can include a main body, a step motor, a series of transmission gears, and connectors. In one implementation, the step motor operates at a speed of eight steps per second, and the series of transmission gears can step down the motion of the step motor to two revolutions per day. The generated driving torque is then transmitted to a bone distractor, such as a commercially available intermittent distractor. The automatic bone traction device is capable of activating the bone distractor continuously at a rate of two revolutions per day. Advantageously, a flexible shaft is used to connect between the transmission gear assembly and the bone distractor. The flexible shaft allows the main body of the bone traction device to be mounted away from the bone distractor at a convenient location for the user.01-15-2009
20090018544METHOD AND APPARATUS FOR SOFT TISSUE BALANCING - A soft tissue balancer in the form of a tensioner, a controller, and software for operating the controller and, correspondingly, the tensioner. The tensioner may be configured for receipt between the femur and the tibia and includes a pair of condylar components having individual, extendable support platforms. The support platforms may be raised or lowered to contact the femoral condyles and distraction the tibia and femur for ligament tensioning and soft tissue balancing. Once the support platforms contact the femoral condyles, range of motion testing of the knee joint may be performed and the various heights achieved and/or forces experienced by the support platforms recorded.01-15-2009
20090275953SPOOL INTERVERTEBRAL DISTRACTION DEVICE AND METHOD - An intervertebral disc space distraction system includes a spool core sized to be percutaneously positioned within a portion of a disc space between adjacent vertebral bodies, the spool core having a first diameter. The system further includes an elongate film removably attached to the spool core, wherein the elongate film can be wound around the spool core to increase the first diameter of the spool core.11-05-2009
20100160920Apparatus for Intraoral Distraction Osteotomy to Widen the Upper Jaw - The present invention provides an improved orthopaedic system for the modification of the distance between the contralateral maxillary segments or halves. In a preferred embodiment, the system includes two metal bone plates fixed on the bony palatal shelves, with slotted extensions which opposite internal walls have concave indents into which disk-shaped wings of interchangeable distraction modules fit. The in the palatal plane concave female indent and the convex male wing prevent distraction module dislocation in case of oblique placement in the axial plane. In the frontal plane, the male wings are straight.06-24-2010
20100241127Methods and instrumentation for distraction of a disc space - Methods and instrumentation for surgical procedures relating to preparation of vertebral bodies and a disc space for insertion of spinal implants is disclosed. One instrument is a shim having a blade and a shaft having a first end connected with the blade. The blade is inserted into a distracted disc space to maintain distraction during subsequent procedures. Another instrument is a driver for driving the blade of the shim into the distracted disc space. Various methods contemplate the use of these instruments to maintain disc space distraction during disc space preparation for receiving an implant.09-23-2010
20090076516DEVICE AND METHOD FOR TISSUE RETRACTION IN SPINAL SURGERY - The invention relates to a system and methods for retracting soft tissue during spinal repair or reconstruction procedures, particularly procedures within intervertebral sites of degenerated discs and associated neural compression. A retractor system includes an implantable bone plate, two or more retractor blades, the bone plate and retractor blades being mutually engageable; and a mechanism to adjust the retractor blade relative to the bone plate. In some embodiments, the retractor system may be applied to span more than one intervertebral space. An implanted retractor system provides an aperture for a clear operating field, and protects collateral tissue. A method for retracting soft tissue to facilitate spinal surgery includes securing a bone plate to adjacent vertebral bodies, engaging one or more retractor blades to the bone plate; and adjusting the angular position of the retractor blade relative to the bone plate so as to retract tissue lying external to the bone plate.03-19-2009
20100198225SHAPE MEMORY SPINE JACK - The present invention relates to a method of repairing vertebral bodies and of controlling vertebral height augmentation. In particular, the invention relates to a spine jack and more particularly to a spine jack comprising shape memory material for use in the method of repair.08-05-2010
20090112214Device and Method for Hip Distention and Access - A device for accessing and distending a joint comprises a distraction structure having a generally tapered distal portion adapted to penetrate a tissue region and create an access space within a joint. The distraction structure also includes a lumen extending from a proximal surface to a distal portion. The device further includes a distention structure deployable through the lumen and adapted to exert a force between a first joint surface and a second joint surface and create a working space. The distention structure may, in some embodiments, include an elongate member having a proximal end, a distal end, and a lumen extending along at least a portion of the length of the elongate member, a first expandable region deployable from a first substantially collapsed position to a second substantially expanded position, the first expandable region adapted to exert a force between the first joint surface from the second joint surface.04-30-2009
20090105710Mechanical Distractor To Facilitate Surgery And Evaluation Of Joints - A medical apparatus having a tensioning device secured to a fixed point; a wire or pin inserted transversely through a bone; and a tension line connecting the tensioning device to the wire or pin. The tension line transmits a force from the tensioning device to the wire or pin to facilitate distraction of a joint of a subject.04-23-2009
20130138112DISTRACTOR - A surgical distractor comprising a base plate (05-30-2013
20100331849SPINE DISTRACTION AND COMPRESSION INSTRUMENT - A surgical instrument for moving tissue, such as bone segments, and more specifically vertebrae of a spinal column, is provided. In particular, a spine compression and/or distraction instrument that can be used to reposition vertebrae is provided. Further, methods for using the surgical instrument to compress and/or distract vertebrae of a spinal column are also provided.12-30-2010
20090312765Wedge Ramp Distractor for use in Implanting Artificial Intervertebral Discs - Instruments and methods for distracting an intervertebral space and inserting and impacting artificial intervertebral discs. A wedge distractor employing opposing ramps through which an inserter/impactor holding an artificial intervertebral disc is admitted, the passage of which through the distractor results in distraction of the intervertebral space simultaneous with insertion of the artificial intervertebral disc. A method of distracting an intervertebral space comprising the steps of inserting a distractor having opposing ramped surfaces into an intervertebral space and inserting an inserter/impactor holding an artificial intervertebral disc between the opposing ramped surfaces of the distractor to insert/impact the artificial intervertebral disc in the intervertebral space. A system for distracting an intervertebral space employing a wedge distractor, inserter/impactor and artificial intervertebral implant.12-17-2009
20100249792Instruments and techniques for separating bony structures - Instruments and techniques separate or spread adjacent bony structures by inserting a distal spreader assembly into the space between the adjacent bony structures and actuating the spreading members with a proximal actuator assembly.09-30-2010
20100249791SYSTEM AND METHOD FOR ORTHOPEDIC MEASUREMENT AND ALIGNMENT - At least one embodiment is directed to a system for distracting bones of a muscular-skeletal system. The dynamic distractor (09-30-2010
20100249790SYSTEM AND METHOD FOR SOFT TISSUE TENSIONING IN EXTENSION AND FLEXION - At least one embodiment is directed to a dynamic distractor (09-30-2010
20110245836MINIMAL INCISION MAXIMAL ACCESS MIS SPINE INSTRUMENTATION AND METHOD - A minimal incision maximal access system allows for maximum desirable work space exposure within the incision along with maximum access to the operative field utilizing a minimum incision as small as the width of the working tube. Instead of multiple insertions of dilating tubes the design is a streamlined single entry device to avoid repetitive skin surface entry. The system offers the capability to expand to optimum exposure size for the surgery utilizing retractors depending from a bi-hinged frame having internal or external controls to control the angle and separation of the retractors. Interchangeable retractor blades can be attached to the frame. Both retractor blades are independently controlled as to displacement and angle.10-06-2011
20090198240Femoral Tibial Spreader with Tensor Measurement - A femoral tibial spreader (08-06-2009
20110251619HIP JOINT ACCESS USING A CIRCUMFERENTIAL WIRE AND BALLOON - The devices disclosed herein can provide access to the central compartment by accessing the medial-inferior side of the acetabulum, where a gap in the labrum exists. A distending device access the peripheral compartment of a hip joint. The device can then be circumferentially looped around the femoral head, and further tightened. Tightening the circumferential device can cause a balloon of the device to be placed within the gap. The balloon may then be inflated within the gap to distend the femoral head from the acetabulum.10-13-2011
20090216237Instrument for Moving a Vertebra - The invention concerns an instrument for moving a vertebra (08-27-2009
20100069912CERVICAL DISTRACTION/IMPLANT DELIVERY DEVICE - Systems for distracting a facet joint and positioning a permanent implant in the joint are disclosed. The implants serve to retain a distracted position of the facet joint which is achieved with positioning of the leading end of a distraction tool in the facet joint and then distracting or enlarging the joint a desired amount. The permanent implant could be part of the distraction mechanism which can be separated from the delivery tool once the joint has been distracted or an auxiliary implant may be positioned before the distraction mechanism is removed from the distracted joint. The permanent implants can be solid, mechanical devices that may have fixation means thereon to hold them in place or injected fluids such as hydrogels or fluids confined within balloons.03-18-2010
20120123424SPINAL IMPLANT DISTRACTOR/INSERTER - A vertebral distractor-inserter comprising a housing, a pair of opposing arms in mechanical communication with the housing, a driving rod extending through at least a portion of the housing and between the arms, wherein the driving rod comprises an axis and a surface with a plurality of angled ratchet teeth on at least a portion of the surface, and a ratchet drive mechanism in mechanical communication with the driving rod. A vertebral distractor-inserter comprising a pair of opposing arms, a housing in mechanical communication with the arms and rotatable about an axis extending between the arms, and a driving rod extending through at least a portion of the housing and between the arms. A vertebral distractor-inserter adapted for single-handed use. A vertebral distractor-inserter having an implant depth adjustor. Methods for distracting adjacent vertebrae and inserting an implant using the devices described herein.05-17-2012
20120303034METHOD AND APPARATUS FOR PERFORMING SPINAL SURGERY - Implants, instruments, and methods for performing surgical procedures on the spine, including one or more of creating an operative corridor to the spine, delivering implants to the spine, fusing one or more segments of the spine, and fixing one or more segments of the spine. A method for attaching a fixation system to the spine of a patient, the fixation system including at least two bone anchors and a spinal rod linking the at least two bone anchors.11-29-2012
20110009870apparatus for spinal fusion - An apparatus and method for distracting, in a given direction, and supporting two tissue surfaces. An expandable implant includes a plurality of elements are consecutively inserted between the two tissue surfaces to create a column of elements. The column of elements is oriented between the tissue surfaces so as to expand in the given direction as the elements are consecutively added to the column. The expandable implant includes a constraint including a cooperative engagement structure between adjacent elements.01-13-2011
20100004654ACCESS AND TISSUE MODIFICATION SYSTEMS AND METHODS - Described herein are methods and systems for precisely placing and/or manipulating devices within the body by first positioning a guidewire or pullwire through the body from a first location, around a curved pathway, and out of the body through a second location, so that the distal and proximal ends of the guidewire extend from the body, then pulling a device into position using the guidewire. The device to be positioned within the body is coupled to the proximal end of the guidewire, and the device is pulled into the body by pulling on the distal end of the guidewire that extends from the body. The device may be bimanually manipulated by pulling the guidewire distally, and an attachment to the device that extends proximally, allowing control of both the proximal and the distal ends. In this manner devices (and particularly implants such as innerspinous distracters, stimulating leads, and disc slings) may be positioned and/or manipulated within the body. Devices to modify tissue may also be positioned or manipulated so that a target tissue within the body is modified.01-07-2010
20110257655INSTRUMENT FOR MEASURING THE DISTRACTION PRESSURE BETWEEN VERTEBRAL BODIES - An instrument for measuring the distraction pressure between vertebral bodies comprises a control device (10-20-2011
20090036895Spinal distractor, compressor, and rod engaging system and method - Apparatus and methods for distracting or compressing distance between a first and second boney structure and for engaging a connecting element.02-05-2009
20080228191Femoral elevator - A bone retractor that may be used as a femoral elevator. The bone retractor includes a clamp for attaching the bone retractor to an operating room bed rail, a post attached to the clamp via a hinged joint, a mount slidably attached to the post and a hook coupled to the mount which in turn is attached to the post. A shaft passes through the interior of the post and attaches to clamp. The clamp has a lower jaw and an upper jaw. An opening is formed in the lower jaw and an end of the shaft is engaged in the opening. The shaft has two sections with a universal joint connecting these two sections. The born retractor is attached to the operating room bed rail by applying clamp to the bed rail. With bone retractor attached to the bed rail, the post is lowered towards the wound. The hook is placed under the bone, and the bone exposed by holding the hook or the post and lifting the bone out of the wound. A knob is tightened to lock the post and consequently the hook in the raised position while the surgeon performs the surgery. When the surgeon is ready, the bone is lowered in the wound by loosening the knob and slowly placing the bone in the desired position in the wound.09-18-2008
20100179558Apparatus And Methods For Inter-Operative Verification Of Appropriate Spinal Prosthesis Size And Placement - A distractor and measuring device includes a first handle operatively connected to a first paddle and a second handle operatively connected to a second paddle. The first and second handles are pivotally connected to one another such that movement of the handles relative to one another causes the paddles to move relative to each other. At least one transducer is positioned on at least one of the first and second handles for measuring an amount of force applied during distraction. A measurement rod is pivotally connected to the device and is movable in a longitudinal direction relative to the first and second paddles. A potentiometer is operatively connected to the measurement rod to measure the angular orientation of the measurement rod.07-15-2010
20100198226Method and instrumentation for posterior interbody fusion - A method and instrumentation for spinal interbody fusion is disclosed. The instruments and methods are particularly adapted for interbody fusion from a posterior approach to the spine. One instrument is a retractor having a lockable pivotally mounted handle. Another instrument is a template for straddling the dura. A modular distractor is also provided and preferably includes a tapered shaft with a visualization window disposed therein. Yet another instrument is a depth gauge to verify bone opening depth and dimension, preferably including a radiopaque portion. A method contemplates the use of these instruments to prepare a disc space to receive an implant.08-05-2010
20110184422METHODS AND DEVICES FOR INTERBODY SPINAL STABILIZATION - Methods and instruments for preparing a disc space and for forming interbody devices therein are provided. The instruments include distractors having enlargeable portions positionable in the disc space for distracting the disc space. The enlargeable portions can also provide form about or against which an interbody device of a first material is placed. A second material may be placed in the disc space in the space previously occupied by the distractors.07-28-2011
20110190774METHODS AND APPARATUS FOR PERFORMING AN ARTHROSCOPIC PROCEDURE USING SURGICAL NAVIGATION - The method for performing an arthroscopic procedure on a joint using surgical navigation. A 3-D virtual model of the anatomy is created from a scan of the anatomy. The 3-D virtual model is then used to reproduce motion of the joint and plan the arthroscopic procedure. The 3-D virtual model is placed into registration with the real-world anatomy, so that a virtual image generated by the 3-D virtual model may be placed into registration with an arthroscopic image of the real-world anatomy. Preferably, arthroscopic registration markers, positioned prior to scanning, are used to place the 3-D virtual model in registration with the real-world anatomy. The arthroscopic registration markers may be placed either percutaneously or arthroscopically. At the conclusion of the procedure, the registration markers may be left in place, removed arthroscopically or allowed to biodegrade.08-04-2011
20090275951Percutaneous discectomy and endplate preparation tool - Surgical instruments and surgical methods associated therewith are described. The surgical instruments described herein can be used for scraping or for other purposes such as measuring distances between two points in hard to reach locales.11-05-2009
20120310249Assembly With Offset Allowing Vertebral Distraction by Axial Rotation of a Concentric Member - An assembly for distraction of spinal vertebrae and which can optionally accommodate retraction blades. The assembly includes a pair of pins each having a first end adapted for vertebral bone engagement and a second end. A pair of sleeves respectively and concentrically engage said pins. A frame includes respective openings which receive the pins and a first end of each said sleeves. The first end of each said sleeve including a portion offset relative to a longitudinal axis of said sleeve such that when the first end of each said pins is anchored in bone, axial rotation of each said sleeves enables said first end of each said pins to move between a first position in which said vertebral bones are not distracted and a second position in which said vertebral bones are distracted. 12-06-2012
20110166579DEVICES AND METHODS FOR MINIMALLY INVASIVE ACCESS INTO A JOINT - Devices and methods are disclosed for providing access to a central compartment of a hip joint. The devices can access the central compartment by distracting all or a portion of the labrum. The labrum can be distracted by advancing a device underneath the bottom edge of the labrum, and using the device to further distract the labrum. Some devices can move underneath the labrum to provide a gap for other devices to access the central compartment.07-07-2011
20110077655Vertebral Body Spool Device - A mandrel is inserted into the tissue to be distracted and a filament is repeatedly wrapped around the mandrel to make a spool. As the mandrel turns, the filament coils around the mandrel to create of spool of increasing diameter. This spool can be used as a distractor, tamp, or implant. A spool implant can be cemented to further stabilize the device in situ, such as a vertebral body. The filament deposition upon the mandrel is controlled by rotation and the volume creation is incremental. This makes the spool ideal for creating highly controlled distraction forces or insertion of bulking material. In some embodiments, fibers having a low glass transition temperature are used.03-31-2011
20120022540APPARATUS AND METHODS FOR USE OF EXPANDABLE MEMBERS IN SURGICAL APPLICATIONS - In some embodiments, an apparatus includes an elongated member, an expandable member coupled to the elongated member, and an outer sheath. The outer sheath, which can be constructed from a different material than the expandable member, is disposed about the expandable member such that an outer surface of the expandable member is in discontinuous contact with an inner surface of the outer sheath. The expandable member and the outer sheath are configured to cooperatively displace a bone structure when moving between a collapsed configuration and an expanded configuration.01-26-2012
20110106094MANDIBULAR DISTRACTION SYSTEM AND METHOD OF USE - A mandibular distraction system and method for treating temporomandibular joint disorders by stretching and relaxing the periarticular muscles of the temporomandibular joint. The system includes a head immobilization device, a patient support device and a facial harness. The system also includes upper and lower mouth guards arranged to fit at least partially around the upper and lower teeth. The mouth guards are configured to operate with a chin strap, sliding assembly, and a displacement device. The displacement device may be actuated to apply force to the facial harness by applying pressure on the chin strap, which is converted by the mouth guards to apply a downward uniform pressure on the back of the jaw, stretching and relaxing the periarticular muscles of the temporomandibular joint. The method of the present invention generally provides steps for allowing distraction of the periarticular muscles to occur while the patient is in a passive, supine position with their mouth closed.05-05-2011
20100094306SPINAL DISTRACTION SYSTEM - A spinal distraction system, according to one embodiment, includes an adjustable spinal distraction rod comprising first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members. The system includes an anchor rod configured for mounting to a bone of a subject, and a housing coupled to the anchor rod, the housing comprising a cavity and a plate having first and second surface. A strain gauge is mounted on a first surface of the plate. A coupling element is configured to mount on a second surface of the plate, the coupling element comprising a portion configured to receive an end of the first member. In the system, the second member is configured for mounting to a second bone of a subject.04-15-2010
20100094304SPINAL DISTRACTION SYSTEM - A spinal distraction system, according to one aspect, includes an adjustable spinal distraction rod comprising first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members, the first member having a splined tip. The system further includes a coupler operatively fixed relative to a first bone of a subject, the coupler comprising a tubular portion having a recess therein, wherein an inner surface of the tubular portion comprises one or more longitudinally oriented channels configured to mate with the splined tip of the first member and prevent relative rotation of the first member relative to the second member, and wherein the second member is configured for mounting to a second bone of a subject.04-15-2010
20100094302SPINAL DISTRACTION SYSTEM - A spinal distraction system includes an adjustable spinal distraction rod having first and second members, the adjustable spinal distraction rod configured for non-invasive elongation of the first and second members. The system includes an anchor rod configured for mounting to a bone of a subject, and a socket coupled to the anchor rod, the socket having a lumen dimensioned to receive an end of a first member, wherein the end of the first member is configured for telescopic sliding movement within the lumen of the socket and wherein the second member is configured for mounting to a second bone of a subject.04-15-2010
20120123425Joint Manipulator Device - The present invention relates to a joint manipulator for rehabilitation of an appendage that has undergone joint replacement surgery or can otherwise benefit from repetitious movement. In one exemplary embodiment, the present invention provides a joint manipulator device for engagement and manipulation of an appendage of an individual. The joint manipulator includes an appendage coupler defining an appendage aperture for receiving a toe of an individual. The joint manipulator further includes a handle disposed with respect to the appendage coupler for causing movement of the appendage coupler. The joint manipulator further includes one or more extension rods connecting the handle to the appendage coupler, wherein upon movement of the handle the appendage coupler moves the toe with respect to an associated foot.05-17-2012
20120123426SPINAL MEASURING DEVICE AND DISTRACTOR - A device for determining an optimal size of an intervertebral implant, comprising movable posterior and anterior rods, each rod operatively connected to a pair of posterior and anterior distracting members, respectively. Each pair is movable in opposing radial directions in response to longitudinal rotation of the posterior and anterior rods, and has marks corresponding to the distance the distracting members have moved for the purpose of measuring posterior and anterior disc height. A position indicator allows measurement of longitudinal distance between the longitudinally movable posterior and anterior rods. The device further comprises load sensor plates movable in response to movement of the distracting members, first and second handles pivotally connected to the load sensor plates, a protractor disposed relative to the handles, allowing measurement of an angle between the first and second handles, and a transducer for measuring force applied during distraction.05-17-2012
20100217271SPINAL DISTRACTION SYSTEM - A spinal distraction system includes a distraction rod having a first end and a second end, the first end being configured for affixation to a subject's spine at a first location, the distraction rod having a second end containing a recess having a threaded portion disposed therein. The system further includes an adjustable portion configured for affixation relative to the subject's spine at a second location remote from the first location, the adjustable portion comprising a housing containing a magnetic assembly, the magnetic assembly affixed at one end thereof to a lead screw, the lead screw operatively coupled to the threaded portion. A locking pin may secure the lead screw to the magnetic assembly. An o-ring gland disposed on the end of the housing may form a dynamic seal with the distraction rod.08-26-2010
20120172883REMOTE-CONTROLLED INTERNAL HYDRAULIC OSSEOUS DISTRACTOR - The present invention relates to a hydraulic, electric, remotely controlled device, which will act as internal distractor to correct spinal deformitites, and/or to lengthen long bones in humans. The object of the present invention is to provide an internal distractor that is totally different from those currently in existence on the market and one which successfully solves the problems and improves the results achieved with distracters and devices currently used for this purpose, but which have limited results, and many problems inherent in current devices. This object will be achieved by virtue of the novel design thereof and the way in which the distractor operates, which is likewise novel, and because the distractor has features that combine the advantages of various devices and techniques in existence on the market for the same purposes.07-05-2012
20120316568SYSTEM FOR DISTRACTING OPPOSING VERTEBRAL BODIES OF A SPINE - A system and method is provided for distracting opposite surfaces from the interior of a bone, such as a vertebral body. A working channel cannula provides a working channel through which an inserter and an injection cannula can simultaneously pass. The inserter transports a plurality of wafers into the interior of the bone to form a load-bearing stack bearing against the opposite surfaces. The injection cannula is used to inject a fluent material into and/or around the stack. In certain embodiments, the fluent material is a load-bearing or hardenable material, such as bone cement. In other embodiments, the fluent material can be a BMP, HAP, or other osteo-inductive, osteo-conductive, or pharmaceutical compositions. A syringe containing the fluent material is engaged to the injection cannula and is operable to inject the fluent material into the vertebral body under controlled pressure.12-13-2012
20100049204INTRACORPOREAL ELONGATION DEVICE WITH A PERMANENT MAGNET - A first part (02-25-2010
20100274252VERTEBRAL BODY REDUCTION INSTRUMENT AND METHODS RELATED THERETO - Featured is a reduction instrument being configured and arranged to allow correction of vertebral translation and applying distraction across a segment in an independent fashion. Such a reduction instrument embodies one or more identical modules that are configured as needed for correcting the deformity. In more particular embodiments, each of the one or more modules has two degrees of freedom (DOF) with uncoupled orthogonal translations. Such a reduction instrument allows the reorientation of the vertebral segment as needed via uncoupled orthogonal translations. Such a reduction instrument also is usable in combination with a plurality of vertebral anchors, such vertebral anchors being any such vertebral anchors as are know to those skilled in the art (e.g., conventional spinal pedicle screw instrumentation) or hereinafter developed so as to form a spinal implant system. Also featured are treatment methods utilizing such a reduction instrument.10-28-2010
20100010494SPINAL MEASURING DEVICE AND DISTRACTOR - A method and device for determining an optimal size of an intervertebral implant to be inserted within an intervertebral space between two vertebrae in a patient, comprising inserting a distractor into the intervertebral space. The vertebral endplate depth is measured by moving a posterior rod on the distractor longitudinally to a position at the posterior margin of the vertebral endplate and moving an anterior rod on the distractor to a position at the anterior margin of the vertebral endplate. The force applied during distraction is measured using at least one transducer mounted on the distractor and the intervertebral space is distracted by rotating the posterior and anterior rods on the distractor until the measured force reaches a predetermined value. The posterior height of the intervertebral space is measured based on the amount that the posterior rod is rotated and the anterior height of the intervertebral space is measured based on the amount that the anterior rod is rotated. The intervertebral angle is measured based on the angular orientation of two pivotally connected handles on the distractor.01-14-2010
20120259343LOW PROFILE DISTRACTOR APPARATUSES - Embodiments of low profile distractor apparatuses are disclosed. The distractor apparatuses generally comprise a mounting body, a tensioning mechanism coupled to the mounting body and a distractor arm coupled to the tensioning mechanism and pivotally coupled to the mounting body for rotation relative to the mounting body. The tensioning axis of the tensioning mechanism is non-coaxial with an effector axis of the distractor arm and a distraction force applied with the distractor arm is translated to the effector axis. This enables the distractor apparatus to be positioned relative to a patient such that the tensioning mechanism is offset from the long axis of the limb of the patient thereby facilitating improved access to the distal portions of the limb.10-11-2012
20120232559NON-INVASIVE ADJUSTABLE DISTRACTION SYSTEM - A spinal distraction system includes a distraction rod having a first end and a second end, the first end being configured for affixation to a subject's spine at a first location, the distraction rod having a second end containing a recess having a threaded portion disposed therein. The system further includes an adjustable portion configured for affixation relative to the subject's spine at a second location remote from the first location, the adjustable portion comprising a housing containing a magnetic assembly, the magnetic assembly affixed at one end thereof to a lead screw, the lead screw operatively coupled to the threaded portion. A locking pin may secure the lead screw to the magnetic assembly. An o-ring gland disposed on the end of the housing may form a dynamic seal with the distraction rod.09-13-2012
20080300601SPINE SURGERY METHOD AND INSTRUMENTATION - Surgical instrumentation for use in placing an implant into a disc space between a pair of spinal vertebrae may include: (a) a distractor having a distal end that may be placed into the disc space between the pair of spinal vertebrae; (b) an inserter for use in moving the implant toward the disc space between the pair of spinal vertebrae; and, (c) a distractor/inserter rail/groove interconnection that interconnects the distractor and the inserter for relative movement thereby.12-04-2008
20110004217Apparatus and Method for Injecting Fluent Material at a Distracted Tissue Site - A system and method is provided for distracting opposite surfaces from the interior of a bone, such as a vertebral body. A working channel cannula provides a working channel through which an inserter and an injection cannula can simultaneously pass. The inserter transports a plurality of wafers into the interior of the bone to form a load-bearing stack bearing against the opposite surfaces. The injection cannula is used to inject a fluent material into and/or around the stack. In certain embodiments, the fluent material is a load-bearing or hardenable material, such as bone cement. In other embodiments, the fluent material can be a BMP, HAP, or other osteo-inductive, osteo-conductive, or pharmaceutical compositions. A syringe containing the fluent material is engaged to the injection cannula and is operable to inject the fluent material into the vertebral body under controlled pressure.01-06-2011
20100241128SPINOUS PROCESS RETRACTOR - A specialized spinous process retractor surgical instrument comprises a pair of opposing proximal handles coupled to a pair of opposing distal jaws through a joint such that when the handles are compressed the jaws spread apart, the handles defining a plane when viewed from the side. The jaws curve downwardly from the plane distally from the joint, then curve back upwardly before terminating in end portions configured for spreading. The instrument defining a centerline when viewed from above, with the jaws distally from the joint diverging outwardly from the centerline, then curving back toward the centerline before terminating in the end portions. The end portions may include opposing, outwardly facing textured or roughened bone-contacting surfaces. The end portions of the jaws when viewed from the sides may define a plane that is substantially parallel to the plane defined by the handles.09-23-2010
20100145348SPINAL DISTRACTOR, COMPRESSOR, AND ROD ENGAGING SYSTEM AND METHOD - Apparatus and methods for distracting or compressing distance between a first and second honey structure and for engaging a connecting element.06-10-2010
20080255567Spinal distraction system - A spinal distraction apparatus includes substantially parallel fixed and movable legs, each of which has opposite front and rear ends. A rear rod projects rigidly from the rear end of the fixed leg and passes slidably through the rear end of the movable leg. A front rod extends rigidly from the fixed leg and is parallel to the rear rod. The front rod is formed with an array of external threads and nuts are threadedly engaged on the external threads for engaging opposite sides of the movable leg at locations adjacent the front rod. Thus, the position of the movable leg relative to the fixed leg can be controlled by adjusting the positions of the nuts. Front ends of the fixed and movable legs have attachments mounted thereto for engaging pedicle screws or other structures used in spinal distraction surgery.10-16-2008
20080234686Intervertebral disc prosthesis, surgical methods, and fitting tools - An intervertebral disc prosthesis designed to be substituted for fibrocartilaginous discs ensures a connection between the vertebra of the vertebra column or the end of the latter. The prosthesis includes a pair of plates spaced from each other by a nucleus. The prosthesis has increased stability by providing the nucleus with a translation or rotation stop, or by inducing an angular correction between its plates contacting vertebra, or a combination of these characteristics. The stop includes pales external to the nucleus and contact surfaces perpendicular to their contact directions. Surgical methods and instrumentation for implanting the prosthesis are also described.09-25-2008
20080234687DEVICES FOR TREATING THE SPINE - Method and apparatus are disclosed for distracting tissue and particularly spinal tissue. The device and method may include insertion of at least one elongated member and an augmenting member to form a structure between the tissues to be distraction, such that a dimensional aspect of the structure is augmented upon movement of the augmenting structure.09-25-2008
20100286701DISTRACTION TOOL FOR DISTRACTING AN INTERSPINOUS SPACE - Distraction tools for distracting an interspinous space formed between spinous processes. The distraction tool may include first and second handles connected together at a pivot between first and second ends. First and second prongs may extend outward from the handles. The handles may move about the pivot between a first orientation with the first and second prongs in proximity to each other and a second orientation with the first and second prongs separated in a first direction. A third member may be connected to the first and second handles and include a third outwardly-extending prong. The third member may be positioned together with the first and second prongs to form a unified prong when the first and second handles are in the first orientation. The unified prong is sized and shaped for insertion into the interspinous space. The third prong may separate from the first and second prongs in a second direction when the first and second handles are in the second orientation. The prongs distract the interspinous space when the handles are in the second orientation.11-11-2010
20130190769METHOD AND APPARATUS FOR MINIMALLY INVASIVE INSERTION OF INTERVERTEBRAL IMPLANTS - A dilation introducer for orthopedic surgery is provided for minimally invasive access for insertion of an intervertebral implant. The dilation introducer may be used to provide an access position through Kambin's triangle from a posterolateral approach. A first dilator tube with a first longitudinal axis is provided. A second dilator tube may be introduced over the first, advanced along a second longitudinal axis parallel to but offset from the first. A third dilator tube may be introduced over the second, advanced along a third longitudinal axis parallel to but offset from both the first and the second. An access cannula may be introduced over the third dilator tube. With the first, second, and third dilator tubes removed, surgical instruments may pass through the access cannula to operate on an intervertebral disc and/or insert an intervertebral implant.07-25-2013
20120095474Spinal Surgery Distraction with an Integrated Retractor - A spinal surgery retractor with a slotted keyway for integrating a keyed spinal distractor. This retractor and distractor combination slide together to displace a portion of the intervertebral disk space to restore or maintain intervertebral spacing and facilitate retraction of surrounding soft tissues while disk space surgery is performed. The distractor head and mating portion of the retractors have matching profiles that enable the retractor to maintain distraction of the vertebra after removal of the distractor portion of the tool, permitting access to increase at the operating site. The retractor has convex curved surfaces that interface with a majority of retracted soft tissues during progression of the retraction process, which enhance retractor safety. In addition, the retractor portion of the tool has a proximally located section that is laterally flexible, which provides further progression in the retraction process while increasing relative access to the operating site.04-19-2012

Patent applications in class Joint distractor