Orthopedic Cutting Instrument Patents (Class 606/79)
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Patent number: 8109931Abstract: A surgical device for preparation of an implant site is disclosed. The device comprises a body capable of being held by a user and an insert that is capable of being coupled to an end of the body. An ultrasound transducer is disposed within the body and provides an ultrasound frequency vibration to the insert in response to an electrical signal. The insert includes a tip having a plurality of cutting elements disposed in a substantially circular configuration. The insert also includes a channel having an opening at the tip for the passage of fluid.Type: GrantFiled: April 4, 2006Date of Patent: February 7, 2012Assignee: Piezosurgery, Inc.Inventors: Tomaso Vercellotti, Domenico Vercellotti, Fernando Bianchetti
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Patent number: 8109957Abstract: Disclosed herein are devices and methods for removing tissue. In one aspect, a device for removing tissue includes a hollow elongate member having an outer wall and a lumen, a selectively deployable tissue-cutting element extending from the hollow elongate member, and an actuation member extending through the lumen and coupled to the hollow elongate member at a location that is distal to the tissue-cutting element. Movement of the actuation member can cause the tissue-cutting element to move from the insertion configuration where the tissue-cutting element is not deployed to a tissue-cutting configuration where the tissue-cutting element is deployed such that it is radially extended relative to the insertion configuration.Type: GrantFiled: June 30, 2006Date of Patent: February 7, 2012Assignee: DePuy Spine, Inc.Inventors: Shawn D. Stad, John Riley Hawkins, Michael J. O'Neil
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Publication number: 20120029519Abstract: A high pressure fluid jet system is provided, which is useful for cutting hard material during a surgical procedure. The cutting of hard material is more efficient as the system delivers abrasive solid particles with the high pressure fluid. A method of effecting cutting during a surgical procedure is also provided. In an exemplary embodiment, a surgical tool that is effective to deliver a pressurized stream of fluid through a nozzle is provided, and the pressurized stream of fluid is delivered through the surgical tool and out of the nozzle to hard material within a patient to effect cutting of the hard material within the patient in a desired pattern. The fluid that cuts the hard material can include a delivery liquid having a plurality of abrasive solid particles that are formed from an organic material. The abrasive solid particles can be entrained in the pressurized fluid stream or the pressurized fluid stream can erode a solid or suspension form of the abrasive particles.Type: ApplicationFiled: July 22, 2011Publication date: February 2, 2012Inventors: Mehmet Z. Sengun, Elizabeth Heneberry, Ian D. McRury, Kevin J. Ranucci, Douglas W. Dunn
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Publication number: 20120029518Abstract: A system for treating a lumbo-sacral junction includes at least one dilator configured to create a passageway from a direct lateral trajectory in a body defining a longitudinal axis. A cutting instrument is configured to create a bore, oriented at an angle from the longitudinal axis, in a L5 vertebrae of the body extending to a central portion of a L5-S1 intervertebral disc space of the body. A delivery instrument is configured to deliver an implant through the bore to the central portion of the L5-S1 disc space. Methods of use are disclosed.Type: ApplicationFiled: July 29, 2010Publication date: February 2, 2012Applicant: WARSAW ORTHOPEDIC, INCInventors: Jonathan E. Blackwell, Anthony J. Melkent, Lindsey Waugh, Sarah Nicole Johnson
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Patent number: 8105327Abstract: An instrument for preparing a cavity for a stem of a prosthetic implant for use in performing joint arthroplasty on a head of a long bone is provided. The instrument includes a body and a punch extending from the body. The punch includes a portion of the punch having a shape similar to the stem of the implant.Type: GrantFiled: March 5, 2004Date of Patent: January 31, 2012Assignee: DePuy Products, Inc.Inventors: Jack F. Long, Joseph P. Iannotti, Gerald R. Williams
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Publication number: 20120022537Abstract: A system for accessing a spine from a curved postero-lateral approach may include a curved cannula positioned along a curved path from an opening in the skin to a location proximate the spine. A guide member may he first inserted to establish the path between the tissues and fascia, and one or more intermediate cannulas may be temporarily inserted over the guide member to dilate the tissues prior to insertion of the main cannula. An interbody device may be implanted in an intervertebral space through the cannula. The system may include a guide bar removably coupled to a targeting post. The targeting post may be inserted adjacent the spine to provide a target, and the guide bar may be removably attached to the guide member, to guide it along the path to the target location. An external support arm may be secured to any other component of the system.Type: ApplicationFiled: September 27, 2011Publication date: January 26, 2012Inventors: Morteza M. Farr, Joshua A. Butters, T. Wade Fallin
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Publication number: 20120022538Abstract: A device for removing tissue from a patient may include an elongate flexible body having a proximal end, a distal end, and a longitudinal axis therebetween, the elongate body having opposed first and second major surfaces with a lateral orientation across the axis, and a plurality of blades distributed laterally across the first major surface. Each blade may have a first end adjacent the first surface and extending to a cantilevered second end, a first edge between the first and second ends of the blade being oriented toward the distal end of the elongate body, a second edge between the first and second ends of the blade being oriented toward the proximal end of the elongate body, a height of the blade between its first and second ends, and an axial length of the blade between its first and second edges.Type: ApplicationFiled: October 6, 2011Publication date: January 26, 2012Inventors: Gregory P. Schmitz, Jeffery L. Bleich, Steven A. Spisak, Roy Leguidleguid, Jefferey Bleam
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Publication number: 20120022536Abstract: A manipulator device for a milling tool for prosthetic surgery operations, comprising a central body and at least attachment members angularly constrained to the central body to achieve the selective attachment/detachment of the central body to/from the milling tool. The attachment members are provided at one end of the central body and comprise mechanical attachment elements comprising an insertion seating, blind and open toward an insertion end in a direction axial to a median axis of rotation of the central body and at least a groove made radially through to the insertion seating and open toward the insertion end. The attachment members also comprise magnetic attachment elements comprising a magnetic element provided inside the insertion seating, in order to magnetically hold a connection element of the tool inside the insertion seating.Type: ApplicationFiled: July 26, 2011Publication date: January 26, 2012Applicant: HPF SRLInventor: TOMMASO LUALDI
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Publication number: 20120016368Abstract: Methods and devices are described for modifying tissue in a spine of a patient to treat or alleviate spinal stenosis. In one embodiment, a method may include: advancing at least a distal portion of an elongate tissue modification device into an epidural space and between target tissue and non-target tissue in the spine; positioning the tissue modification device so that at least one abrasive surface of the device faces target tissue and at least one non-abrasive surface faces non-target tissue; applying tensioning force at or near separate distal and proximal portions of the tissue modification device; and translating the tissue modification device back and forth while maintaining at least some tensioning force to abrade at least a portion of the target tissue with the at least one abrasive surface. Unwanted damage to the non-target tissue may be prevented via the at least one non-abrasive surface.Type: ApplicationFiled: September 23, 2011Publication date: January 19, 2012Inventors: Jeffery L. Bleich, Edwin J. Hlavka
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Publication number: 20120016367Abstract: Devices for cutting an intervertebral disc that may include an elongated shape with a distal end and a proximal end and being sized for insertion into an intervertebral space. The devices may include a number of articulating segments that are movably connected together to be shaped in a variety of angular orientations to conform to the shape of the intervertebral disc. The segments may include one or more exposed cutting surfaces that cut the disc as the device is moved through the intervertebral space.Type: ApplicationFiled: July 13, 2010Publication date: January 19, 2012Applicant: WASAW ORTHOPEDIC INC.Inventors: Bruce Chabansky, Calin Druma
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Publication number: 20120010619Abstract: An orthopedic guidewire includes an elongate guidewire body having longitudinally spaced proximal and distal guidewire ends. An engaging feature is located at the distal guidewire end and is configured to selectively engage a bone surface. At least one of a variable diameter and a variable stiffness are along a portion of the guidewire body spaced apart from the engaging feature. A method of providing a relative location indication during a surgical procedure utilizing the orthopedic guidewire is also included.Type: ApplicationFiled: July 7, 2011Publication date: January 12, 2012Inventor: Wael K. Barsoum
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Patent number: 8092457Abstract: A medical drilling device for drilling of human or animal tissue carries a drill (7) that is electrically contacted by a bore electrode (9) and a backing electrode (10). Both electrodes (9, 10) are charged by a resistance-measuring device (11) in a way, that electrical resistance of tissue (2, 3, 4), preferably impedance, as measured between the drill (7) and the backing electrode (10) becomes measurable. By means of a monitoring device (13), the surgeon is provides with information about the type of the respective tissue and the depth of drilling.Type: GrantFiled: January 30, 2004Date of Patent: January 10, 2012Inventors: Wolfgang Oettinger, Wolfgang J. Parak
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Patent number: 8092455Abstract: An apparatus for providing medical treatment includes a tool portion configured to operate relative to bone tissue, a handle portion to operate the tool portion, and a nerve monitoring system to detect neural elements. The tool portion includes an insulated shaft comprised of an electrically conductive member and a non-insulated tip. The shaft carries an electrical signal to the non-insulated tip. The handle portion, which is removably and operably connected to the tool portion, incorporates an operating system to operate the tool portion. Additionally, the nerve monitoring system is linked to the tip and is operable to detect a neural element as a function of a characteristic of the electrical signal on the tip. Upon detection of a neural element, the nerve monitoring system provides a signal to the operating system of the handle portion directing the operating system change an operative mode of the tool portion.Type: GrantFiled: February 7, 2005Date of Patent: January 10, 2012Assignee: Warsaw Orthopedic, Inc.Inventors: Seth L. Neubardt, William Keith Adcox, Sharonda Felton
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Patent number: 8092456Abstract: A method of accessing target tissue adjacent to a spinal nerve of a patient includes the steps of accessing a spine location of the patient by entering the patient through the skin at an access location, inserting a flexible tissue modification device through the access location to the spine location, advancing a distal portion of the first flexible tissue modification device from the spine location to a first exit location, passing through the first exit location and out of the patient, advancing the first or a second flexible tissue modification device through the same access location to the spine location and to a second exit location, and passing through the second exit location and out of the patient.Type: GrantFiled: January 13, 2009Date of Patent: January 10, 2012Assignee: Baxano, Inc.Inventors: Jeffery L. Bleich, Michael Sheinberg, Michael P. Wallace
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Publication number: 20120004660Abstract: An implant composed substantially of cortical bone is provided for use in cervical Smith-Robinson vertebral fusion procedures. The implant is derived from allograft or autograft cortical bone sources, is machined to form a symmetrically or asymmetrically shaped (e.g. a substantially āDā-shaped) implant having a canal running therethrough according to methods of this invention, and inserted into the space between adjacent cervical vertebrae to provide support and induce fusion of the adjacent vertebrae. Osteogenic, osteoinductive or osteoconductive materials may be packed into the canal of the implant to expedite vertebral fusion and to allow autologous bony ingrowth.Type: ApplicationFiled: January 19, 2010Publication date: January 5, 2012Inventors: Jamie M. Grooms, Kevin C. Carter, Tom Sander, David H. Dulebohn, Diane Carter
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Publication number: 20120004595Abstract: Various medical devices and methods for cutting and/or evacuating tissue are provided. The devices and methods may utilize a reciprocating mechanism or motor powered by suction from a vacuum source. The medical devices and methods may be used on tissue in various regions of a patient's body and for treating various conditions, e.g., for performing a polypectomy or discectomy.Type: ApplicationFiled: June 30, 2011Publication date: January 5, 2012Applicant: Laurimed, LLCInventors: Brian R. DUBOIS, James T. NIELSEN, Alexander GORDON
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Publication number: 20110319941Abstract: A robotic system for performing minimally invasive spinal stabilization, using two screws inserted in oblique trajectories from an inferior vertebra pedicle into the adjacent superior vertebra body. The procedure is less traumatic than such procedures performed using open back surgery, by virtue of the robot used to guide the surgeon along a safe trajectory, avoiding damage to nerves surrounding the vertebrae. The robot arm is advantageous since no access is provided in a minimally invasive procedure for direct viewing of the operation site, and the accuracy required for oblique entry can readily be achieved only using robotic control. This robotic system also obviates the need for a large number of fluoroscope images to check drill insertion position relative to the surrounding nerves. Disc cleaning tools with flexible wire heads are also described. The drilling trajectory is determined by comparing fluoroscope images to preoperative images showing the planned path.Type: ApplicationFiled: December 1, 2009Publication date: December 29, 2011Inventors: Yossef Bar, Eli Zeha Vi, Isador Lieberman, Moshe Shoham
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Publication number: 20110319897Abstract: Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.Type: ApplicationFiled: January 20, 2011Publication date: December 29, 2011Applicant: CONFORMIS, INC.Inventors: Philipp Lang, Wolfgang Fitz
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Publication number: 20110319895Abstract: An awl provides for creating an accurate hole in a bone, such as for implantation of a suture anchor. The awl comprises an elongated shaft having a distal tip which terminates in a sharp point adapted to penetrate bone. At least one cutting flute is provided on the shaft and has a longitudinally extending cutting edge formed on the shaft proximal to and adjacent to the sharp point whereby to allow removal of bone via the cutting flute upon rotation of the shaft about a central longitudinal axis thereof inside of the bone.Type: ApplicationFiled: June 25, 2010Publication date: December 29, 2011Applicant: DePuy Mitek, Inc.Inventor: Daniel Gamache
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Publication number: 20110319896Abstract: A flexible cannulated drive shaft (1) having a plurality of interlocking sections (6) having multi-angled dovetails cut into the drive shaft. Each dovetail design is made up of substantially triangular-shaped pins (7) and substantially triangular-shaped sockets (8) that alternate around the circumference of each interlocking section. The pins of one interlocking section moveably engage the sockets of a second interlocking section and vice versa. Furthermore, the substantially triangular-shaped pins and substantially triangular-shaped sockets stay locked together whether the drive shaft is being rotated clockwise or counterclockwise. Angled surfaces (21, 22) add greater stability to the drive shaft and prevent the interlocking sections from coming apart.Type: ApplicationFiled: December 15, 2010Publication date: December 29, 2011Inventors: Erik H. Papenfuss, Hans B. Papenfuss
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Publication number: 20110306979Abstract: The invention relates to a surgical instrument comprising a handling part and a tool part that encompasses at least one movably mounted tool which is actuated via a force-transmitting and/or actuating mechanism. Said force-transmitting and/or actuating mechanism is operated from the handling part and is provided with a fluid-operated drive unit. In order to improve said surgical instrument such that the same can be operated with as much sensitivity as possible, the movably mounted tool can be impinged upon a first acutation force in a first driven position while being impinged upon by at least one second actuation force in a least one second driven position with the aid of the drive unit.Type: ApplicationFiled: August 15, 2011Publication date: December 15, 2011Applicant: Aesculap AGInventors: Peter Schulz, Dieter Weisshaupt, Markus Nesper, Konstantin Faulhaber, Theodor Lutze
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Publication number: 20110306978Abstract: A method for performing an acetabular arthroplasty in an acetabulum of an ilium may include locating an iliac canal of the ilium. The iliac canal extends from the surface of the acetabulum generally toward a portion of the iliac ridge. An impacting step impacts a non-rotating bone removal tool aligned along the iliac canal such that the non-rotating bone removal tool removes bone within the iliac canal and forms a bone void. Another step secures a fixation implant within the canal void. An acetabular implant is installed within the acetabulum over the fixation implant.Type: ApplicationFiled: December 2, 2009Publication date: December 15, 2011Applicant: SMITH & NEPHEW, INC.Inventors: Michael D. Ries, David C. Kelman
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Patent number: 8070750Abstract: A tunnel notcher and guidewire delivery device is provided for creating a notch and positioning a guidewire within a bone tunnel. In general, the device includes an elongate member having proximal and distal ends with an inner lumen extending therebetween that is adapted to receive a guidewire. The device also includes a cutting element disposed on a distal portion of the elongate member that is adapted to remove bone within an opening of a bone tunnel. In use, the device 10 can be at least partially positioned within a bone tunnel containing a bone plug, and it can be manipulated to form a notch within or adjacent to an opening of the bone tunnel using the cutting element 18. The device 10 is also effective to deliver a guidewire 16 to the bone tunnel at a location adjacent to the notch.Type: GrantFiled: March 5, 2004Date of Patent: December 6, 2011Assignee: Depuy Mitek, Inc.Inventors: Richard F. Wenstrom, Jr., Robert K. Breech, II
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Publication number: 20110295259Abstract: Improved instruments for modifying a shape of a proximal femur of a patient for installation of a stem of a femoral component of a prosthetic hip during hip replacement surgery, comprising a handle including an elongated shaft extending downward approximately in a z-direction, a first offset extending from a bottom of the elongated shaft approximately in a y-direction, a second offset extending from the second offset approximately in an x-direction, and a shaping member elongated downward from the second offset approximately in the z-direction. Provided is an improved femoral broach and an improved osteotome. Also provided is a method of improving a patient's positioning during hip replacement surgery by using a variable configuration mattress for positioning the patient.Type: ApplicationFiled: February 2, 2011Publication date: December 1, 2011Applicant: Smith & Nephew, Inc.Inventor: David C. Kelman
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Patent number: 8066707Abstract: A method is disclosed for preparing a space in bone of a human body to receive an insert at least in part therein. The method is performed with a device having a mid-longitudinal axis and a rotatable abrading element having an abrading surface. The method includes the steps of: activating the device to cause the abrading surface to move; contacting the abrading surface of the abrading element against the bone to remove bone therefrom to form a surface on the bone to create the space; rotating the abrading element about an axis different from the mid-longitudinal axis of the device; removing the abrading surface from the space; and positioning an insert into the space created in the bone.Type: GrantFiled: November 15, 2005Date of Patent: November 29, 2011Assignee: Warsaw Orthopedic, Inc.Inventor: Gary K. Michelson
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Publication number: 20110288552Abstract: A novel and improved elbow prosthesis and method of implanting same including a novel aggregate prosthesis having a retaining system in conjunction with a set plate.Type: ApplicationFiled: July 28, 2011Publication date: November 24, 2011Inventors: Randall Lane Acker, Gregory Thomas Van Der Meulen
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Patent number: 8062298Abstract: A device for modifying tissue in a patient may include: an elongate body having a rigid proximal portion and a flexible distal portion having first and second major surfaces; a proximal handle coupled with the proximal portion of the body; one or more tissue modifying members disposed along the first major surface of the distal portion of the body; a guidewire coupled with and extending from the distal portion of the body; and a distal handle removably couplable with the guidewire outside the patient.Type: GrantFiled: March 16, 2007Date of Patent: November 22, 2011Assignee: Baxano, Inc.Inventors: Gregory P. Schmitz, Jeffrey L. Bleich, Steven A. Spisak, Roy Leguidleguid, Jefferey Bleam
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Patent number: 8062319Abstract: An endoscopic rotary abrader allowing for increased burr size while maintaining the required minimum clearance between the burr and the hood. This is accomplished either by an offset configuration of non-concentric inner and outer tubes, where the inner tube is shifted laterally away from the hood, or by employing an enlarged hood.Type: GrantFiled: October 14, 2009Date of Patent: November 22, 2011Assignee: Arthrex, Inc.Inventors: Philip S. O'Quinn, Randall L. Hacker, Christine Bickenbach, Gerald Goldsmith
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Patent number: 8057500Abstract: A flexible inner member for rotation within an angled outer tubular member of a rotary tissue cutting instrument to cut anatomical tissue includes a flexible region for conforming to the configuration of an angled region of the outer tubular member. The flexible region comprises a cut having convoluted path areas formed through a cylindrical wall of a tubular body of the inner member. The convoluted path areas are rotationally spaced on the tubular body in alternating sequence with connecting path segments of the cut. The cut follows a convoluted path in the convoluted path areas forming the wall of the tubular body into a pair of complementary, mating hook formations of opposed curvature. The connecting path segments extend rotationally along the tubular body between the convoluted path areas.Type: GrantFiled: August 1, 2008Date of Patent: November 15, 2011Assignee: B&M Precision, Inc.Inventor: Miroslav Mitusina
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Patent number: 8052689Abstract: An acetabular reamer (10, 10?, 10?) is intended in particular for the shaping of the cotyloid cavity in the event of a replacement of a hip joint by total prosthesis. The reamer (10, 10?, 10?) is typically of a truncated hemispherical form and is adapted for attachment to a reamer spindle in order to be driven in rotation about a cutter axis (11). The ability to cut a full, continuous hemisphere to the apex (12) of the hemispherical body (14) is suppressed, so as to attain the principal advantage of the invention, namely, to adequately prepare the acetabulum for receipt of a prosthesis while minimizing the possibility of breakthrough of the fovea/acetabular fossa. The reamer (10, 10?, 10?) has an interface 16 typically made tip of cross bars (20) which a holder engages for rotationally activating the reamer for cutting.Type: GrantFiled: December 27, 2007Date of Patent: November 8, 2011Assignee: Greatbatch Medical S.A.Inventors: Eugene Sherry, Sureshan Sivananthan, Patrick Hans Heinrich Warnke, Andreas Baenziger, Patrick White, Patrick Berdoz, Fabrice Chenaux
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Patent number: 8052706Abstract: A flexible inner member for rotation within an angled outer tubular member of a rotary tissue cutting instrument to cut anatomical tissue includes a flexible region for conforming to the configuration of an angled region of the outer tubular member and formed of a labyrinthine cut through a cylindrical wall of a tubular body of the inner member. The labyrinthine cut includes a plurality of labyrinthine areas rotationally spaced on the tubular body and in which the labyrinthine cut defines a labyrinth configuration including minor curves of opposed curvature respectively arranged within major curves of opposed curvature, with each of the minor curves being continuous with a major curve of opposed curvature thereto.Type: GrantFiled: July 10, 2008Date of Patent: November 8, 2011Assignee: B&M Precision, Inc.Inventor: Miroslav Mitusina
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Patent number: 8052613Abstract: Disclosed are surgical tools, tool sets and methods for percutaneously accessing and preparing treatment sites within the spine for subsequent treatment procedures. The treatment site may be an inter-vertebral motion segments in the lumbar and sacral regions of the spine. The tool set may comprise introducer tools and bone dilators for accessing and tapping into a targeted site, such as, for example, the anterior surface of the S1 vertebral body. The tool set may also comprise cutters and extractors for preparing the treatment site for subsequent treatment procedures. The tool set may additionally comprise a bone graft inserter, an exchange system, and/or a temporary distraction tool for further preparing the treatment site for subsequent treatment procedures.Type: GrantFiled: October 22, 2004Date of Patent: November 8, 2011Assignee: TranS1 Inc.Inventors: Robert L. Assell, Stephen D. Ainsworth, Andrew H. Cragg, Eugene A. Dickhudt
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Publication number: 20110270254Abstract: A hip cup extraction apparatus (101) comprising a shaft (402), a handle (404), a semicircular cutting blade (406), a spring loaded latching member (408), and a head (100) for removing a hip cup (405) from a pelvic bone (401). The head (100) includes a semispherical section (102) terminating in a substantially planar surface (104), a hip cup extraction apparatus aperture (106), a retaining sleeve (108), and a three sided void (110). The head (100) may be configured for selective attachment to the hip cup extraction apparatus (101). The hip cup extraction apparatus (101) is inserted into the hip cup extraction apparatus aperture (106), and an optional spring loaded latching member (408) retains the head (100) in place. As the head (100) is being attached to the hip cup extraction apparatus (101), the semicircular cutting blade (406) may pass through the three sided void (110). Once the head (100) is attached to the hip cup extraction apparatus (101), the head (100) is inserted into the hip cup (405).Type: ApplicationFiled: July 9, 2011Publication date: November 3, 2011Inventor: James Anderson
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Publication number: 20110270236Abstract: The invention relates to a device for penetratingly extending a blind hole into a hard tissue, particularly a jawbone. The device is characterized in that it comprises a tubular body (1) having a distal working opening (2) and an inlet (3) opposite the working opening (2), said inlet being closed by a sealing element (4) that is penetrated by a shaft (5) of a working tool, for example a milling tool (5, 6), and allows at least a feed motion, a drive motion and a steering motion of the working tool (5, 6), the tubular body (1) being provided with a connection (8) for applying an internal pressure.Type: ApplicationFiled: October 20, 2009Publication date: November 3, 2011Applicant: JEDER GMBHInventor: Klaus Eder
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Publication number: 20110264225Abstract: An apparatus used in spinal surgery for creating a space of selected shape and dimensions across the disc space between adjacent vertebral bodies of the spine.Type: ApplicationFiled: June 30, 2011Publication date: October 27, 2011Inventor: Gary K. Michelson
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Publication number: 20110264096Abstract: A bone mill including a base and a mill head that is removably attached to the base. A cutting disc is rotatably disposed in the mill head. When the mill head is attached to base, the cutting disc is rotated by a motor internal to the base. A plunger mounted to the mill head urges the bone against the cutting disc. The cutting disc and an impingement plate internal to the mill head shear the bone into chips. The chips are discharged from an opening in the mill head into a catch tray removably attached to the mill head.Type: ApplicationFiled: July 7, 2011Publication date: October 27, 2011Inventors: Richard Frederick Burmeister, III, Gary T. Kalinka, Michael J. Peterson, Ben J. Sy, Eric K. Diehl
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Patent number: 8043291Abstract: A bone harvesting tool includes an elongate hollow collection cannula with a lumen for receiving harvested bone tissue. Holes are formed through the collection cannula to permit visual observation of the volume of bone tissue that has been collected. Cutting blades are mounted to the distal end of the collection cannula and are configured for cutting into bone tissue. The cutting blades are aligned so that the harvested bone tissue advances proximally into the lumen of the collection cannula. A guide pin is telescoped into the collection cannula and through the blades. The guide pin is employed for initial positioning of the tool on the bone. A plug near the distal end of the guide pin enables the guide pin to be used for expelling the collected bone tissue from the collection cannula.Type: GrantFiled: November 21, 2006Date of Patent: October 25, 2011Inventor: Joseph Accordino
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Patent number: 8043292Abstract: A surgical sagittal saw blade that including a guide bar shaped to be releasably secured in a static position to a complementary surgical sagittal saw. A blade is mounted to the guide bar to pivot around a pivot point. The blade has teeth located outside of the guide bar. Drive rods extend from the blade. The drive rods connect to a complementary driver integral with the saw. When the saw driver is actuated, the drive rods undergo reverse reciprocation. The reciprocation of the driver rods cause the blade to oscillate around a pivot point.Type: GrantFiled: December 15, 2008Date of Patent: October 25, 2011Assignee: Stryker CorporationInventor: Steven Carusillo
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Publication number: 20110257653Abstract: Surgical systems and methods are disclosed for creating a 3D model of a patient's affected area using an imaging device, using the model to determine an implant orientation and position, creating patient-matched instrumentation, placing the patient-matched instrumentation on the patient's anatomy, registering a computer-assisted surgical tool, and acquiring registration information. The methods and systems also include associating the surgical tool with a computer to perform a computer assisted surgery. Also disclosed are embodiments of patient-matched instrumentation to acquire registration information.Type: ApplicationFiled: April 14, 2011Publication date: October 20, 2011Applicant: Smith & Nephew, Inc.Inventors: Michael Dean Hughes, Jeffrey A. Sharp
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Patent number: 8038677Abstract: The invention relates to a surgical instrument comprising a handling part and a tool part that encompasses at least one movably mounted tool which is actuated via a force-transmitting and/or actuating mechanism. Said force-transmitting and/or actuating mechanism is operated from the handling part and is provided with a fluid-operated drive unit. In order to improve said surgical instrument such that the same can be operated with as much sensitivity as possible, the movably mounted tool can be impinged upon a first actuation force in a first driven position while being impinged upon by at least one second actuation force in a least one second driven position with the aid of the drive unit.Type: GrantFiled: March 8, 2007Date of Patent: October 18, 2011Assignee: Aesculap AGInventors: Peter Schulz, Dieter Weisshaupt, Markus Nesper, Konstantin Faulhaber, Theodor Lutze
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Publication number: 20110251615Abstract: Methods and devices that displace bone or other hard tissue to create a cavity in the tissue. Where such methods and devices rely on a driving mechanism for providing moving of the device to form a profile that improves displacement of the tissue. These methods and devices also allow for creating a path or cavity in bone for insertion of bone cement or other filler to treat a fracture or other condition in the bone. The features relating to the methods and devices described herein can be applied in any region of bone or hard tissue where the tissue or bone is displaced to define a bore or cavity instead of being extracted from the body such as during a drilling or ablation procedure.Type: ApplicationFiled: April 8, 2011Publication date: October 13, 2011Applicant: Dfine, Inc.Inventors: Csaba TRUCKAI, Aaron GERMAIN, John H. SHADDUCK
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Patent number: 8029508Abstract: A bone-cutting apparatus and associated method and system. In one embodiment, the apparatus includes a guide removably attachable to a bone, and a rotatable mill coupled to the guide. The guide has a box-cut opening and the mill is pivotable within the opening. In one embodiment, the mill is laterally adjustable relative to the opening.Type: GrantFiled: April 14, 2008Date of Patent: October 4, 2011Assignee: Biomet Manufacturing Corp.Inventors: John M. Cuckler, Robert Metzger, Kurt Schmidt, Trevor S. Schlueter, James M. McKale
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Publication number: 20110238070Abstract: Tools and instruments for use in orthopedic applications for forming openings and/or cavities in anatomical structures, e.g., bone and cartilage structures, are provided. The tools/instruments include a shaft having a distal end and defining a longitudinal axis and a shank disposed at the distal end of the shaft. The shank includes a tapered cutting edge and an adjacent fluted region. The shank is effective to collect and deposit materials generated by a cutting action within an opening or cavity formed thereby. A stop may be mounted with respect to the shaft. The tools/instruments deliver a clean and crisp cut to anatomical structures, thereby facilitating interaction with subsequently delivered plugs and/or implants.Type: ApplicationFiled: February 28, 2011Publication date: September 29, 2011Applicant: ACCELERATED ORTHOPEDIC TECHNOLOGIES, INC.Inventors: Stephen Santangelo, Ronald G. Litke, Hanspeter Robert Bayer
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Publication number: 20110238069Abstract: A hole forming device useful for creating holes with threads in bone is disclosed. The hole forming device may be formed from an inner shaft and outer sleeve extending distally from a handle. The inner shaft may include a pointed tip that may be used to initiate hole formation. Once the hole forming device has been partially inserted into a material, such as, but not limited, bone, the inner shaft may be removed without having to remove the outer sleeve. The outer sleeve remains in place in the material and may then be advanced to create threads within the hole. Screws and other appropriate devices may be secured in the threaded hole.Type: ApplicationFiled: February 11, 2011Publication date: September 29, 2011Applicant: Arthrex, Inc.Inventors: Eric Zajac, Robert Sluss, James Bradley
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Patent number: 8025668Abstract: A medical device removal system includes a vessel filter repositioning or removal device to remove and/or reposition a medical device, such as a vessel filter. The system includes a gripper to grip a medical device that is located within a body vessel, and a detector, linked to the gripper, to detect the proximity of the medical device to the gripper. The system may also include an output to indicate a signal from the detector.Type: GrantFiled: April 28, 2005Date of Patent: September 27, 2011Assignee: C. R. Bard, Inc.Inventor: Charles M. McCartney
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Patent number: 8025662Abstract: A surgical rotary reamer including a shaft and a cutting head connected to the shaft. The cutting head has a plurality of cutting teeth. At least one cutting tooth has a forward portion, a rearward portion and a mid-portion therebetween. The forward portion has a first cutting edge that cuts in a first rotary direction. The rearward portion has a second cutting edge that cuts in the first rotary direction and/or a second rotary direction. The mid-portion interconnects the forward portion and the rearward portion and includes a recessed portion.Type: GrantFiled: March 25, 2005Date of Patent: September 27, 2011Assignee: Symmetry Medical, Inc.Inventors: Brad Knisely, Tamela Garber
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Patent number: 8016834Abstract: The invention concerns a process for treating of vertebral body (70) with the following steps: introducing a trocar (10) and a trocar jacket (20) into the vertebral body (70), removing the trocar (10), introducing the same or a different biopsy and cement cannula (30) into the trocar jacket, extracting spongiosa (74) into the biopsy and cement cannula (30), removing the biopsy and cement cannula (30), filling a biopsy and cement cannula (30) with contact cement (60), introducing the biopsy and cement cannula (30) into the trocar jacket (20), and introducing the bone cement (60) into the vertebral body (70) by introduction of a plunger (40) into the biopsy and cement cannula (30). The invention further concerns a device for treatment of vertebral bodies with at least one biopsy and cement cannula, which are fillable with bone cement, and a plunger, which is introducible into the biopsy and cement cannula, in order to expel bone cement out of the biopsy and cement cannula.Type: GrantFiled: August 3, 2005Date of Patent: September 13, 2011Inventors: Helmut Weber, Nils Haberland
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Publication number: 20110218536Abstract: A medical catheter extrusion forms a sheath around a wire. The extrusion is coupled to a steering and motivating handle. The handle is part of a housing that houses a motivation component fixed to the housing, a crankshaft, or similar eccentric component, couples to the motivation component, which is coupled to a proximal end of the wire. At the wire's distal end, a cutting tip with canted teeth couples to the wire. The cutting tip is capable of cutting bone when moving axially toward the catheter extrusion but glides across the bone without cutting it when moving axially away from the catheter extrusion. The motivation component can be a motor or buttons or a trigger, that couple to the wire and converts manual movement into reciprocating motion of the flexible shaft. The shaft's reciprocating motion moves the flexible and steerable shaft back and forth to move the.Type: ApplicationFiled: April 2, 2010Publication date: September 8, 2011Inventor: Richard E. Wunderlich
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Publication number: 20110218575Abstract: Fusion of cervical spinal vertebrae with one or more fixation devices can be accomplished with the described tools and methods. For example, a guidewire introducer can include a tubular introducer cannula and a handle. The handle can be angularly offset from the introducer cannula such that positioning of the introducer on the cervical spine does not interfere with a patient's head. A sheath assembly can include inner and outer sheath bodies and a handle. The handle is angularly offset from the sheath bodies such that the sheath assembly can be applied to the cervical spine without interference to the patient's head. The sheath body can be curved or straight. Various tools such as drills, tapping devices, compression tools, and pin release tools can be applied to the cervical spine through the sheath body to apply the fixation device. The tools can include elongate flexible shafts.Type: ApplicationFiled: April 1, 2011Publication date: September 8, 2011Applicant: INTERVENTIONAL SPINE, INC.Inventors: Brad S. Culbert, Larry Khoo, Bob Flower
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Publication number: 20110213431Abstract: Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.Type: ApplicationFiled: January 26, 2011Publication date: September 1, 2011Applicant: CONFORMIS, INC.Inventors: Wolfgang Fitz, Philipp Lang