Pin Connector Patents (Class 606/59)
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Publication number: 20140364853Abstract: A clamping device for an external fixation system includes a post component having a yaw axis, a first clamp secured to the post component and rotatable about the yaw axis, and a second clamp secured to the post component and rotatable about the yaw axis relative to the first clamp. The device includes a tightening component configured in a manner that an action of tightening the tightening component simultaneously locks both the first and second clamps in a gripping arrangement and substantially eliminates their relative rotation about the yaw axis. Interdigitating components can be spaced apart by high spring rate biasing elements that so as to allow for smooth adjustment of the clamping device components relative to each other until the appropriate position is achieved and until after a sufficiently high clamping load has been applied.Type: ApplicationFiled: August 27, 2014Publication date: December 11, 2014Inventors: Michael W. Mullaney, Stephen T. Miller, William Brian Austin
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Publication number: 20140350558Abstract: External fixation systems, and methods for immobilizing joints or fractured bones. An external fixation system may include one or more clamp assemblies connected to one or more rod assemblies at polyaxial joints. Each rod assembly may be length adjustable, and may include a one-way locking mechanism to provisionally lock the length of the rod assembly, and additional locking mechanisms to permanently lock the length of the rod assembly. The system may be deployed pre-assembled as a unit to immobilize a joint or fracture. Another external fixation system further includes a spanning member extending transverse to the rod assemblies. Two or more external fixation systems may be deployed in a stacked configuration on one set of bone pins to immobilize two joints and/or fractures. The systems may be provided in kits including guiding instrumentation, bone pins and pin clamping assemblies for connecting the bone pins to the external fixation systems.Type: ApplicationFiled: August 11, 2014Publication date: November 27, 2014Inventors: Daniel J. Triplett, Nathan Erickson
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Patent number: 8894649Abstract: An external fixation system having at least one ball collet pivotably mounted within a movable clamp and at least one ball collet pivotably mounted within a fixed clamp, wherein a surgical pin is mounted within each ball collet. In operation, the surgical pins are screwed into bone and passed through openings through the fixed clamp, movable clamp, and ball collets. A drive knob is operable to rotate a drive screw and thereby move the movable clamp either towards or away from the fixed clamp and concomitantly move the pins secured in the movable clamp either towards or away from the pins secured in the fixed clamp. A connecting rod prevents axial rotation of the movable clamp and fixed clamp relative to each other.Type: GrantFiled: January 3, 2013Date of Patent: November 25, 2014Assignee: 3D Medical Exfix, LLCInventors: Harry E. Lee, Jr., Joshua J. Reardon, Beverly L. Laird
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Patent number: 8888777Abstract: An articulation element consisting of a plurality of adjustable jaw pairs for the purposes of fixating the relative position of coupled bars and/or bone pins of an external bone fixator. Each of the adjustable jaws consists of a pair of hemispherical jaw elements contained within a spherical housing. A passage is eccentrically arranged through the jaw elements to accept the pin or bar. The jaw elements have interposed between them a spring element that serves to bias the jaw elements in the closed position. Pins serve to provisionally lock the jaw elements in the closed position. Spring loaded buttons act to release the pins thereby allowing the jaw elements to open accepting the pin or bar. The jaws are attached in a back to back fashion through the use of a threaded collar which acts as a turnbuckle pulling the jaws together when tightened.Type: GrantFiled: December 20, 2012Date of Patent: November 18, 2014Assignee: Zimmer, Inc.Inventor: Michael W. Mullaney
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Publication number: 20140336649Abstract: A fixation clamp for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements, has of at least one clamping assembly having at least one reception provided by means of grooves to accommodate a fixation element along the longitudinal axis of the reception. At least one locking element extends through the clamping assemblies for blocking the position of the clamping assemblies in a defined angular position. The clamping assembly comprises a first jaw and a second jaw which are in contact with each other via respective contact surfaces. The clamping assembly comprises at least two orientation devices that extend from and/or into said contact surfaces which at least two orientation devices serve to orient the first jaw with respect to the second jaw.Type: ApplicationFiled: July 28, 2014Publication date: November 13, 2014Inventors: Klaus Dorawa, Adam Busch, Claudio Küng
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Publication number: 20140336650Abstract: A fixator for use in the reconstruction of acute, chronic and traumatic injuries to the upper and lower extremities. The fixator has a unique clamping system that allows for the snapping in of pins and rails, and for multi-planar fixation of bones.Type: ApplicationFiled: July 29, 2014Publication date: November 13, 2014Inventor: Shane M. Hollawell
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Publication number: 20140303621Abstract: Devices for the fixation of a bone fracture and methods of using the devices are provided. The devices comprise at least one distal pin assembly configured to engage a first bone fragment, at least one proximal pin assembly configured to engage a second bone fragment, and a rail bar system configured to connect the distal and proximal pin assemblies together across the bone fracture. Each pin assembly includes a screw portion having a distal end configured to engage first bone fragment and a proximal end, a support sheath portion having a distal end configured to engage the first bone fragment, wherein the support sheath portion defines an elongated channel in which the proximal end of the screw portion is disposed, and a cap portion configured to attach the proximal end of the screw portion to the support sheath portion.Type: ApplicationFiled: January 22, 2014Publication date: October 9, 2014Applicant: Fixx Orthopedics, LLCInventors: Thomas Gerold, Marc Egeland, Kenneth Noonan
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Publication number: 20140303622Abstract: A multi-axis adjustable splint for treating the fracture of bones includes a rail body that has a longitudinal axis. The splint further includes a fixed clamp assembly coupled to the rail body for securing at least one first bone screw in a first desired orientation. The fixed clamp assembly is translationally fixed relative to the rail body. The adjustable splint further includes a movable clamp assembly movably coupled to the rail body for securing at least one second bone screw in a second desired orientation. The movable clamp assembly is translatable along the longitudinal axis of the rail body. Both the fixed clamp assembly and the movable clamp assembly are each independently adjustable about three axes of rotation relative to the rail body.Type: ApplicationFiled: April 7, 2014Publication date: October 9, 2014Inventors: Ron A. Olsen, Robert Horneff
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Patent number: 8852248Abstract: The present application relates to a cross pin fixator device comprising a plate member with spherical cavities that are open to the front and to the back of the plate, collapsible pin holder members having a central channel for insertion of a bone pin, the collapsible pin holder member being press-fit into the spherical cavities, and bone pins individually inserted into the central channel of a pin holder. The application also relates to a method for treating a fracture of the proximal humerus using the proximal humerus cross pin fixator and to a kit for treating a fracture of a bone.Type: GrantFiled: January 13, 2012Date of Patent: October 7, 2014Assignee: A.M. Surgical, Inc.Inventors: Ather Mirza, Romi Mirza
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Patent number: 8844536Abstract: A locking apparatus for use with a head fixation device allows for a stabilizing fixture, such as a rocker arm having a pair of skull pins, to be selectively secured so that the stabilizing fixture can be adjustably rotated to a desired position. In some version the locking apparatus includes a connector that is retained within an opening in a portion of the head fixation device. The connector can translate within the opening and is restricted from rotation. The translating of the connector permits the connector to engage an arch member that retains the stabilizing fixture. The engagement of the connector and arch member is accomplished, in some versions, by way of matching axial oriented toothed portions or starburst features. In some versions the teeth on the starburst features include a chamfer surface.Type: GrantFiled: August 24, 2011Date of Patent: September 30, 2014Assignee: pro med instruments GmbHInventor: Matthias E. Schuele
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Patent number: 8840611Abstract: A clamping device for an external fixation system includes a post component having a yaw axis, a first clamp secured to the post component and rotatable about the yaw axis, and a second clamp secured to the post component and rotatable about the yaw axis relative to the first clamp. The device includes a tightening component configured in a manner that an action of tightening the tightening component simultaneously locks both the first and second clamps in a gripping arrangement and substantially eliminates their relative rotation about the yaw axis. Interdigitating components can be spaced apart by high spring rate biasing elements that so as to allow for smooth adjustment of the clamping device components relative to each other until the appropriate position is achieved and until after a sufficiently high clamping load has been applied.Type: GrantFiled: October 12, 2011Date of Patent: September 23, 2014Assignee: Zimmer, Inc.Inventors: Michael W. Mullaney, Stephen T. Miller, William Brian Austin
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Publication number: 20140276823Abstract: A stabilization device for use in the medical field includes an interchangeable pin holder assembly. The pin holder assembly has a first portion that is separable from a second portion such that the first portion can be replaced with a similar first portion having one or more components of a different size to accommodate patients of different sizes or to accommodate different stabilization techniques. A method for interchanging a portion of a pin holder assembly includes aligning components of the pin holder assembly and applying force in either a distal or proximal direction depending on whether or not the interchangeable portion of the pin holder assembly is being removed or attached.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicant: pro med instruments GmbHInventor: Matthias E. Schuele
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Publication number: 20140276824Abstract: A clamping assembly for an external fixation system, comprising a clamp body having an opening for receiving a bone fixation member; a pivotably rotatable locking arm associated with the clamp body, the locking arm being configured to provisionally hold the bone fixation member inside the opening of the clamp body; and a cam arm coupled to the locking arm, the cam arm being pivotably rotatable towards the clamp body to definitively hold the bone fixation member inside the opening of the clamp body.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Inventors: Jeffery T. Cresina, Paul Slagle
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Publication number: 20140275959Abstract: An electrical insulator is applied to a bone anchor, for instance of a bone implant, such as an external fixation frame, so as to prevent undesirable temperature increases in the bone anchor and surrounding anatomical tissue when subjected magnetic resonance imaging.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Inventors: John Disegi, Thomas Joseph Maughan
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Publication number: 20140257288Abstract: Described herein are external fixation systems for correcting bone deformities in adjacent bones or fragments thereof. The systems herein include first and second elongate rods that translate with respect to one another via rotation of an actuation member at an end of one of the rods. At least one housing is coupled along a length of one of the rods. The at least one housing includes at least one pin clamping member for clamping an end of a fixation pin therein. When the at least one pin clamping member is in an unlocked state, the fixation pin can rotate in polyaxial directions. When in a locked state, the angle of fixation wire with respect to the rods is set. The locked and unlocked state of the at least one pin clamping member is determined by the positing of a fixation member with respect to the housing it is coupled to.Type: ApplicationFiled: March 6, 2013Publication date: September 11, 2014Applicant: STRYKER TRAUMA SAInventor: Eric Chang
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Patent number: 8827998Abstract: A fixation clamp for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements, has of at least one clamping assembly having at least one reception provided by means of grooves to accommodate a fixation element along the longitudinal axis of the reception. At least one locking element extends through the clamping assemblies for blocking the position of the clamping assemblies in a defined angular position. The clamping assembly comprises a first jaw and a second jaw which are in contact with each other via respective contact surfaces. The clamping assembly comprises at least two orientation devices that extend from and/or into said contact surfaces which at least two orientation devices serve to orient the first jaw with respect to the second jaw.Type: GrantFiled: November 22, 2011Date of Patent: September 9, 2014Assignee: Stryker Trauma SAInventors: Klaus Dorawa, Adam Busch, Claudio Küng
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Patent number: 8827997Abstract: A fixation clamp for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements has at least one clamping assembly having a pair of jaws with at least two different size grooves to accommodate a bone fixation element such as a pin or rod. An alternate clamping assembly has at least three grooves wherein at least two of the grooves have a different size adapted to accommodate a correspondingly sized bone fixation element such as a bone pin. The longitudinal axes of the grooves define a polygon. The jaw pairs can be rotated about a central longitudinal axis to present different size reception cavities towards the pins or rocks depending on their diameter.Type: GrantFiled: May 14, 2010Date of Patent: September 9, 2014Assignee: Stryker Trauma SAInventors: Axel Bernhard Cremer, Beat Mürner, Umesh Verma, Usha Mathur
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Patent number: 8827999Abstract: A polymeric external fixator element, such as a rod or a pin or a clamp, has at least one contacting surface. At least one of the contacting surfaces of the element responsible to establish connection between the element and a different external fixator element is provided with a rough ablated structure. The clamping can be improved if one of the polymeric elements comprise fibers having fiber parts protruding above the surface.Type: GrantFiled: September 11, 2012Date of Patent: September 9, 2014Assignee: Stryker Trauma SAInventors: Philippe Lehmann, Roland Thomke
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Patent number: 8821491Abstract: An external fixation component includes a capture member defining opposing grooves on opposite lateral sides of the capture member for capture of an element of an orthopedic fixation system. The capture member includes a base and a head coupled to the base to define a component axis that extends through the base and through the head. The base and the head are coupled for relative lateral translation in opposing directions such that the element can be captured by the capture member in either of the opposing grooves.Type: GrantFiled: July 28, 2011Date of Patent: September 2, 2014Assignee: Smith & Nephew, Inc.Inventors: David Edward Chreene, Gene Edward Austin
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Patent number: 8808291Abstract: A fixator for use in the reconstruction of acute, chronic and traumatic injuries to the upper and lower extremities. The fixator has a unique clamping system that allows for the snapping in of pins and rails, and for multi-planar fixation of bones. The claim system includes a hinge, a first clamp, and a second clamp.Type: GrantFiled: July 9, 2013Date of Patent: August 19, 2014Assignee: Wright Medical Technology, Inc.Inventor: Shane M. Hollawell
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Patent number: 8801711Abstract: The skull clamp system with pressure limiting and alarm systems includes at least one and preferably multiple inwardly power driven immobilizing pins adjustably engaging the skull of a patient. The pin power drive systems includes at least one sensor capable of sensing the degree of back pressure on the pin from contact of the pin against the bone of the patient, the sensor being capable of signaling the drive system to stop when the sensor detects a preselected degree of back pressure. The sensor is also capable of signaling an alarm to warn of any reduction of pressure applied to the pins that might result from pin slippage.Type: GrantFiled: June 18, 2012Date of Patent: August 12, 2014Inventors: Clifford T. Solomon, Theodore C. Solomon
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Publication number: 20140222000Abstract: By providing components securable to anchor pins or screws of different diameters as well as providing clamps which hold associated pins in any position during adjustments, an external fixation or adjustable frame structure is provided which is capable of being quickly and easily assembled in any desired configuration. In the present invention, the frame structure is retained in any assembled configuration in order to allow final adjustments to be made, prior to the final securement of the frame assembly in the precisely desired configuration by closure of each clamp member. In this way, an entire frame assembly is capable of being constructed, adjusted, and readjusted in order to assure each component is oriented in the precisely desired position prior to final closure of the clamping members.Type: ApplicationFiled: April 14, 2014Publication date: August 7, 2014Applicant: ZIMMER, INC.Inventors: Robert A. Winquist, ROY BOGERT, CHARLES HUMMEL, JAMES SEATON, JAMES NELSON
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Publication number: 20140214033Abstract: An external fixation system includes a clamp system configured to capture a fixation element. The clamp system has a first and a second jaw and a first and a second link attached to the first and second jaws that are configured to control the motion of the jaws. The links are arranged such that, when the first and second jaws are moved to a closed position, the action of trying to open the jaws is resisted by the position of the links, and to open the jaws, the links must be actuated.Type: ApplicationFiled: March 28, 2014Publication date: July 31, 2014Inventor: Stephen T. Miller
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Patent number: 8758343Abstract: A clamp assembly for bone fixation elements including first and second clamp structures configured to engage first and second bone fixation elements, respectively. The first clamp structure may have a first spherically contoured bearing surface. The second clamp structure may have a second spherically contoured bearing surface seated in sliding contact with the first bearing surface. A spring-loaded mechanism may apply a spring force urging the bearing surfaces together to resist pivotal movement of the clamp structures relative to each other. The clamp assembly may be used with an assembly of fixation elements to create an external fixation frame.Type: GrantFiled: April 27, 2005Date of Patent: June 24, 2014Assignee: Depuy Synthes Products, LLCInventors: Thomas J. Maughan, James P. Hearn
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Publication number: 20140155894Abstract: A fixation clamp, more particularly for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements, has at least one clamping assembly having at least one reception to accommodate a fixation element along the longitudinal axis of the reception and at least one locking element extending through the clamping assemblies for blocking the position of the clamping assemblies in a defined angular position. Between said locking element and said at least one clamping assembly there is arranged a washer. The clamping assembly comprises a first contact surface which is spherical and convex and in that said washer comprises a second contact surface which is spherical and concave, wherein the first contact surface is in contact with the second contact surface.Type: ApplicationFiled: February 7, 2014Publication date: June 5, 2014Applicant: STRYKER TRAUMA SAInventors: Klaus Dorawa, Axel Bernhard Cremer, Adam Busch
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Patent number: 8734446Abstract: A clamping device for an external fixation system includes a first clamp having an opening for receiving an external fixation element, the first clamp having an axle seat. A first base component includes a concave first surface and a second surface facing away from the first surface. The concave first surface is in selective engagement with the clamp. A swivel element comprises an axle component and a post component. The axle component is disposed on the axle seat of the first clamp. The post component extends from the axle component and has a length sized to extend from the axle component through a second external fixation clamp. The post component is arranged to swivel relative to the axle seat. Methods are also disclosed.Type: GrantFiled: October 12, 2011Date of Patent: May 27, 2014Assignee: Zimmer, Inc.Inventor: Stephen T. Miller
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Patent number: 8728079Abstract: A clamp applicable to both temporary and definitive orthopaedic external fixation systems comprising a first coupling element having a pair of opposite jaws defining one or more seats to house a first component of the orthopaedic external fixation system. A second coupling element comprises a pair of opposite jaws defining one or more seats to house a second component of the orthopaedic external fixation system. An interconnection pin passes through and connects the first and second coupling elements along an axis of rotation. A fastening means is arranged to bring the clamp from a slack configuration. The first and second coupling elements are relatively rotatable along the axis of rotation to a locked configuration, and are relatively rotatable with each other. These fastening means include manually operable temporary fastening means to temporarily lock the clamp, and definitive fastening means operable with a fastening tool, to definitively lock the clamp.Type: GrantFiled: September 23, 2013Date of Patent: May 20, 2014Assignee: Orthofix S.R.L.Inventors: Enrico Zandona, Denis Lorenzini, Daniele Venturini, Selvadurai Nayagam, Marco Assom
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Patent number: 8728078Abstract: An external fixation system includes a clamp system configured to capture a fixation element. The clamp system has a first and a second jaw and a first and a second link attached to the first and second jaws that are configured to control the motion of the jaws. The links are arranged such that, when the first and second jaws are moved to a closed position, the action of trying to open the jaws is resisted by the position of the links, and to open the jaws, the links must be actuated.Type: GrantFiled: November 4, 2011Date of Patent: May 20, 2014Assignee: Zimmer, Inc.Inventor: Stephen T. Miller
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Publication number: 20140135766Abstract: A device for the external fixation of a first bone element and a second bone element articulated to each other, comprises: a guide member equipped with a curvilinear guide; a first fastening member slidably associated with the guide and equipped with first means for releasable fastening to the first bone element; a second fastening member associated with the guide member and equipped with first means for releasable fastening to the second bone element; and relative movement means by which the first fastening member is moved relative to the second fastening member along the guide.Type: ApplicationFiled: June 12, 2012Publication date: May 15, 2014Applicant: CITIEFFE S.R.L.Inventors: Franco Mingozzi, Alan Dovesi, Thomas Gausepohl
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Patent number: 8721641Abstract: An external orthopaedic fixator for elbow joints comprising: proximal anchoring means intended to be integrally associated to a proximal bone of a patient's upper limb; distal anchoring means intended to be integrally associated to a distal bone of a patient's upper limb; an articulator hinging together said proximal and distal anchoring means along a hinging axis, intended to be positioned in correspondence with an elbow joint connecting said proximal and distal bones; said articulator comprising a radiotransparent centering window intended to frame the elbow joint when positioning the external orthopaedic fixator, said hinging axis passing through said centering window.Type: GrantFiled: February 3, 2012Date of Patent: May 13, 2014Assignee: Orthofix S.r.l.Inventors: Andrea Ottoboni, Daniele Venturini
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Patent number: 8702706Abstract: A pelvic clamp has a rail-like straight guide for two arms which are displaceable relative to one another along this straight guide and project from the straight guide and on each of the free ends of which an approximately tubular carrier for a tip intended for bone contact is provided. A locking device releasable using at least one handle is provided between the two parts displaceable relative to one another, namely between at least one of the arms and the straight guide. Preferably at least one of the arms preferably both arms, is or are capable of being folded or dismantled and thus shortened via at least one joint which can be fixed in a desired position and/or a plug connection.Type: GrantFiled: May 23, 2006Date of Patent: April 22, 2014Assignee: Depuy Synthes Products, LLCInventor: Andreas Lanz
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Patent number: 8696668Abstract: By providing components securable to anchor pins or screws of different diameters as well as providing clamps which hold associated pins in any position during adjustments, an external fixation or adjustable frame structure is provided which is capable of being quickly and easily assembled in any desired configuration. In the present invention, the frame structure is retained in any assembled configuration in order to allow final adjustments to be made, prior to the final securement of the frame assembly in the precisely desired configuration by closure of each clamp member. In this way, an entire frame assembly is capable of being constructed, adjusted, and readjusted in order to assure each component is oriented in the precisely desired position prior to final closure of the clamping members.Type: GrantFiled: March 28, 2011Date of Patent: April 15, 2014Assignee: Zimmer, Inc.Inventors: Robert A. Winquist, Roy Bogert, Charles Hummel, James Seaton, James Nelson
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Patent number: 8685023Abstract: A fixation clamp, more particularly for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements, has at least one clamping assembly having at least one reception to accommodate a fixation element along the longitudinal axis of the reception and at least one locking element extending through the clamping assemblies for blocking the position of the clamping assemblies in a defined angular position. Between said locking element and said at least one clamping assembly there is arranged a washer. The clamping assembly comprises a first contact surface which is spherical and convex and in that said washer comprises a second contact surface which is spherical and concave, wherein the first contact surface is in contact with the second contact surface.Type: GrantFiled: November 22, 2011Date of Patent: April 1, 2014Assignee: Stryker Trauma SAInventors: Klaus Dorawa, Axel Bernhard Cremer, Adam Busch
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Patent number: 8685022Abstract: A device (1) according to the invention for externally fixing broken bones (62, 62?) of a patient, particularly the extremities, comprises a support (11) composed of a plurality of joint elements (2, 2) that are stringed together, wherein said support can be disposed outside the body of the patient. The proximal ends (41) of at least two percutaneously disposed pins (4) are anchored in the bone tissue (61) of the patient, and the distal ends (42) are fixed to the support (11). The joint elements (2) are stringed on a central tensile force element (3), and in each case two adjoining joint socket (22). The individual ball joints, and thus the support (11), can be fixed in a reversible frictionally engaged manner by applying a tensile force of the central tensile force element (3). The joint elements (2, 2?) in turn are designed such that a pin (4) can be fastened to the support (11) in a clamping and/or frictionally engaged manner by applying the tensile force of the central tensile force element (3).Type: GrantFiled: June 17, 2009Date of Patent: April 1, 2014Inventors: Kai-Uwe Lorenz, Heiko Durst
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Patent number: 8679117Abstract: A system for fixing a wire to a surface of an external fixator having a wire adapted to extend through bony structure fastened with respect to the surface. A bolt having a shaft which comprises a threaded section, a head section and at least one clamping element is provided wherein the bolt is adapted to extend through an opening in the external fixation element with a nut, and clamps the wire to the surface. A counter torque tool is used to provide a counter torque while fastening the wire with the bolt and the nut. The bolt comprises a counter torque opening and wherein the counter torque tool comprises a section which is adapted to engage into the counter torque opening of the bolt to apply the counter torque.Type: GrantFiled: October 18, 2011Date of Patent: March 25, 2014Assignee: Stryker Trauma SAInventors: Beat Knuchel, Joël Bouquet, Philippe Lehmann
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Publication number: 20140081267Abstract: An orthopedic device includes a fixator body having a first part and a second part that are connected by a joint and having an internally threaded bore extending longitudinally therethrough. A first pair of opposed longitudinally extending slots is provided in the first part and a second pair of opposed longitudinally extending slots is provided in the second part. A first and second pin-holders are received within and threadably engage the internally threaded bore of the first part and the second part, respectively, and are configured to removably hold a first and second sets of one or more bone fixation pins extending through the first and second pairs of opposed longitudinally extending slots, respectively.Type: ApplicationFiled: November 15, 2013Publication date: March 20, 2014Applicant: Wright Medical Technology, Inc.Inventors: James Edward ORSAK, Kian-Ming (Kevin) WONG
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Publication number: 20140066931Abstract: External fixation systems, and methods for immobilizing joints or fractured bones. An external fixation system may include one or more clamp assemblies connected to one or more rod assemblies at polyaxial joints. Each rod assembly may be length adjustable, and may include a one-way locking mechanism to provisionally lock the length of the rod assembly, and additional locking mechanisms to permanently lock the length of the rod assembly. The system may be deployed pre-assembled as a unit to immobilize a joint or fracture. Another external fixation system further includes a spanning member extending transverse to the rod assemblies. Two or more external fixation systems may be deployed in a stacked configuration on one set of bone pins to immobilize two joints and/or fractures. The systems may be provided in kits including guiding instrumentation, bone pins and pin clamping assemblies for connecting the bone pins to the external fixation systems.Type: ApplicationFiled: August 7, 2013Publication date: March 6, 2014Applicant: IMDS CorporationInventors: Thomas H. Myers, Robert V. O'Toole, Jason W. Nascone, Douglas M. Lorang, Andrew R. Fauth, Daniel J. Triplett
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Publication number: 20140046326Abstract: A telescopically adjustable strut for use with orthopedic external fixators has a first end and a second end and includes a universal-hinged connector provided at each of the first and second ends for connecting the strut to orthopedic external fixator base members. The universal-hinged connector is configured and adapted for pivoting the strut relative to the base members and to lock the universal-hinged connector at a desired angle.Type: ApplicationFiled: May 16, 2013Publication date: February 13, 2014Applicant: WRIGHT MEDICAL TECHNOLOGY, INC.Inventor: Kian-Ming Kevin Wong
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Patent number: 8641714Abstract: A clamping pin is provided for mounting in an opening of a medical device. The clamping pin comprises an axially extending screw, a first clamping element having a surface inclined to a longitudinal screw axis and provides a first part of a clamping section. A second clamping element has a surface inclined to the longitudinal axis and provides a second part of the clamping section which is complementary to the opening in the medical device. The inclined surfaces of the first and second clamping elements contact. A screw extends at least partly through both the first and second clamping elements. The screw engages one of the clamping elements such that the axial distance between the two clamping elements and the diameter of the clamping section that can come in contact with a surface of the opening in the medical device will be changed upon actuation of the screw.Type: GrantFiled: December 8, 2011Date of Patent: February 4, 2014Assignee: Stryker Trauma SAInventors: Christian Steiner, Meinrad Fiechter, Beat Knuchel, Vinzenz Burgherr
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Publication number: 20140031822Abstract: A method for treating a fracture of a bone with a medullary canal. A first and a second group of three elongated monocortical pins are provided. Each pin has a stem with a first end portion having a conical shape with an external thread for insertion into a cortical portion of a bone. Each pin of the first and second group of three monocortical pins is inserted a predetermined distance from the bone fracture, and penetrates only into the cortical portion of the bone without reaching the medullary cavity, the pins of the first and second group being inserted such that they are not coplanar to each other. The stems of the pins of the first and groups are blocked to a first and a second common clamp element respectively. The first and second clamp elements are joined to a common rod to form a rigid external fixation system.Type: ApplicationFiled: July 11, 2013Publication date: January 30, 2014Inventors: Daniele Venturini, Andrea Ottoboni, Enrico Zandona
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Publication number: 20140025077Abstract: A clamp applicable to both temporary and definitive orthopaedic external fixation systems comprising a first coupling element having a pair of opposite jaws defining one or more seats to house a first component of the orthopaedic external fixation system. A second coupling element comprises a pair of opposite jaws defining one or more seats to house a second component of the orthopaedic external fixation system. An interconnection pin passes through and connects the first and second coupling elements along an axis of rotation. A fastening means is arranged to bring the clamp from a slack configuration. The first and second coupling elements are relatively rotatable along the axis of rotation to a locked configuration, and are relatively rotatable with each other. These fastening means include manually operable temporary fastening means to temporarily lock the clamp, and definitive fastening means operable with a fastening tool, to definitively lock the clamp.Type: ApplicationFiled: September 23, 2013Publication date: January 23, 2014Applicant: ORTHOFIX S.R.L.Inventors: Enrico Zandona, Denis Lorenzini, Daniele Venturini, Selvadurai Nayagam, Marco Assom
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Publication number: 20140025076Abstract: An external fixation system having at least one ball collet pivotably mounted within a movable clamp and at least one ball collet pivotably mounted within a fixed clamp, wherein a surgical pin is mounted within each ball collet. In operation, the surgical pins are screwed into bone and passed through openings through the fixed clamp, movable clamp, and ball collets. A drive knob is operable to rotate a drive screw and thereby move the movable clamp either towards or away from the fixed clamp and concomitantly move the pins secured in the movable clamp either towards or away from the pins secured in the fixed clamp. A connecting rod prevents axial rotation of the movable clamp and fixed clamp relative to each other.Type: ApplicationFiled: January 3, 2013Publication date: January 23, 2014Applicant: 3D Medical Concepts, LLCInventors: Harry E. Lee, JR., Joshua J. Reardon, Beverly L. Laird
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Patent number: 8608740Abstract: A bolt is adapted to clamp a pin to an external fixator system. The bolt includes a shaft having a threaded section, a head section and a pin opening that is arranged opposite the threaded section and accommodates and clamps a pin or a wire to a plate or ring of an external fixator. The plate comprises at least one opening which accommodates the shaft and a surface against which the pin or the wire is clamped by the bolt. The pin opening comprises at least two edges extending essentially along the same direction as the pin opening such that the pin or wire to be clamped is contact with said edges.Type: GrantFiled: July 12, 2011Date of Patent: December 17, 2013Assignee: Stryker Trauma SAInventors: Manfred Bütikofer, Joël Bouquet, Philippe Lehmann
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Publication number: 20130331838Abstract: A two-piece clamping element comprises two separate, i.e., non-integral, opposing first and second clamping jaws forming a laterally open cavity to receive a pin or rod-shaped element. Each clamping jaw has a bore aligned with one another to receive a screw, wherein a pivot bearing is arranged opposite said cavity allowing the two opposing clamping jaws to come in contact to one another. The pivot bearing comprises at least one set of complementary part-cylindrical bearing surface portions. An anti-rotation pin extends between the two jaw members.Type: ApplicationFiled: July 9, 2013Publication date: December 12, 2013Applicant: Stryker Trauma SAInventors: Roland Thomke, Christian Lutz, Vinzenz Burgherr, Damian Fankhauser
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Patent number: 8603090Abstract: An adjustment tool for an external fixator comprises a fitting element for holding fast a clamping assembly of the external fixator. A positioning clamp is provided for fixing the adjustment tool on a rod of the external fixator near the clamping assembly. A connecting element is attached to the fitting element and the positioning clamp is adapted to move the fitting element towards to or away from the positioning clamp. The fitting element comprises a blocking sleeve adapted to push the uppermost jaw of the clamping assembly in the direction of the longitudinal axis of the clamping assembly to block the second upper most jaw against an abutment portion of the fitting element. The tool further comprises an actuation element within the blocking sleeve to actuate the locking element of the clamping assembly for releasing the rod within the clamping assembly without releasing the bone pin.Type: GrantFiled: September 25, 2012Date of Patent: December 10, 2013Assignee: Stryker Trauma SAInventors: Umesh Verma, Klaus Dorawa, Usha Mathur
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Patent number: 8585703Abstract: An adjustment tool for an external fixator comprises a fitting element for holding fast a clamping assembly of the external fixator. A positioning clamp is provided for fixing the adjustment tool on a rod of the external fixator near the clamping assembly. A connecting element is attached to the fitting element and the positioning clamp is adapted to move the fitting element towards to or away from the positioning clamp. The fitting element comprises a blocking sleeve adapted to push the uppermost jaw of the clamping assembly in the direction of the longitudinal axis of the clamping assembly to block the second upper most jaw against an abutment portion of the fitting element. The tool further comprises an actuation element within the blocking sleeve to actuate the locking element of the clamping assembly for releasing the rod within the clamping assembly without releasing the bone pin.Type: GrantFiled: November 22, 2011Date of Patent: November 19, 2013Assignee: Stryker Trauma SAInventors: Umesh Verma, Klaus Dorawa, Usha Mathur
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Publication number: 20130296858Abstract: A fixator for use in the reconstruction of acute, chronic and traumatic injuries to the upper and lower extremities. The fixator has a unique clamping system that allows for the snapping in of pins and rails, and for multi-planar fixation of bones.Type: ApplicationFiled: July 9, 2013Publication date: November 7, 2013Inventor: Shane M. Hollawell
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Patent number: 8568456Abstract: A transverse connector system having a first and a second locking element. The present invention also provides transverse rod having opposing first and second ends, the first end being retained within a portion of the first locking element and the second end being retained within a portion of the second locking element. The first locking element is configured with a connector body for engaging and capturing an elongated rod and a transverse rod simultaneously.Type: GrantFiled: September 8, 2010Date of Patent: October 29, 2013Assignee: Globus Medical, Inc.Inventor: Michael Black
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Publication number: 20130267952Abstract: An external fixation assembly includes a plurality of hollow pins that are inserted into a patient's bone. Each pin has an interior bore and a plurality of apertures extending through the pin wall from the bore. The pin may be coupled to a source of vacuum pressure operable to create reduced pressure in the tissue surrounding the pin. A cover is placed around the pin and sealed to provide a fluid-tight enclosure that maintains reduced pressure around the pin. A method for applying external fixation using the fixator pins described above includes the steps of inserting each pin through a skin opening, positioning the pin apertures near selected tissue, covering the skin opening with a sealed enclosure, connecting the pins to a source of vacuum pressure, and activating the source of vacuum pressure to create reduced pressure in the patient's tissue at or near the bone.Type: ApplicationFiled: May 17, 2013Publication date: October 10, 2013Inventors: Lawrence X. Webb, Louis C. Argenta, Michael J. Morykwas
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Patent number: 8523859Abstract: A vacuum-assisted wound healing device is provided comprising an airtight hollow conical member surrounding a skin-breaching bone stabilization device, and a port for attaching a suction tube. The conical member has an opening at one end conforming to the circumference of the shaft of a bone stabilization device, and a opening at the other end to enclose a wound in a patient's skin surrounding the bone stabilization device. The device may be used to provide controlled reduced pressure to the wound site, reducing healing time and risk of infection.Type: GrantFiled: August 2, 2006Date of Patent: September 3, 2013Assignee: The Nemours FoundationInventors: Whitney Sample, J. Richard Bowen, Tariq Rahman