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415 results about "External fixator" patented technology
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External fixator for immobilizing bone fragments, particularly in the area of the wrist
InactiveUS6530925B2Simple structureEasy to manufactureFractureInvalid friendly devicesExternal fixatorSpherical shaped
This fixator (1) comprises a rigid bar (7), two pin-holder assemblies (8, 9) which can be moved relative to this bar (7), and means (13, 22) with which it is possible to immobilize each pin-holder assembly (8, 9) in a defined position relative to the bar (7).According to the invention:the bar (7) has a cylindrical main part (10) and a spherical part (11) at one end;a first pin-holder assembly (8) comprises a one-piece body (12) with a bore passing through it to permit its engagement by sliding on the cylindrical part (10) of the bar (7); andthe second pin-holder assembly (9) comprises a one-piece body (15) in which a recess (16) is formed, this recess (16) having a zone of partially spherical shape with a radius slightly greater than that of said spherical part (11), this zone being such that it can receive this spherical part (11) with pivoting, without lateral play, and with a possibility of articulation of said second pin-holder assembly (9).
Owner:STRYKER EURO OPERATIONS HLDG LLC
Unilateral fixator
InactiveUS7282052B2Great advantageDiagnosticsComputer-aided planning/modellingExternal fixatorGear wheel
A unilateral external fixator device that allows for gross manipulation and fine adjustment of deformities in six degrees of freedom. The device may comprise a strut assembly and two compound movable joints, one at each end of the strut assembly. One compound movable joint may comprise two revolute joints, each containing a gear reduction mechanism and may rotate about the strut. The second compound movable joint may contain two revolute joints, each containing a gear reduction mechanism, and may move along the length of the strut assembly. The gear reduction mechanisms may comprise helical spline assemblies that allow for gross and fine adjustment of the fixator.
Owner:AMDT HLDG INC
Clamping connection for medical equipment and apparatus
InactiveUS6022348AMinimal motionEasy to disassembleSuture equipmentsLigamentsExternal fixatorCoupling
The invention relates to a coupling of two sides of a synergetically cooperating fixation system in medical equipment and apparatus, illustrated by way of example of an external fixator with rod-like guide elements, wherein a point-precise and internally tension-free clamping connection is formed by in each case two planar parallel disposed faces. The complementary, uncoated coupling surface is shape-matchingly impressed "de novo" and "uniquely" during each coupling closure by a static press-on force based on a diamond, plastic grain layer of a chaotic profile solidly attached to one of the faces, such that a clamping connection with the multilatent force-form match closure is furnished.
Owner:SPITZER DANIEL
Clamping and articulation element
A one-piece clamping element has two opposing clamping jaws forming a laterally open cavity to receive a rod-shaped element. A hinge is located between the jaws, arranged opposite the cavity, and connecting the clamping jaws with one another and thus allowing them to be movable with respect to one another. Each clamping jaw has one bore, aligned flush with one another. One clamping jaw has a receptacle for an anti-rotation device. The receptacle makes it preferable—with the exception of an immediate tightening of the screw in this or another place of an external fixator clamping element used for the same patient—to use the clamping element only once and discarding it after use. Two identical clamping elements, with the possible exception of the size of the rod receptacle, can be placed on top of one another to form an articulation element.
Owner:STRYKER EURO OPERATIONS HLDG LLC
External fixator system
ActiveUS20120041439A1Compact structureEasier patient accessInvalid friendly devicesFractureExternal fixatorBiomedical engineering
An external fixator system comprising at least two fixation plates which are arranged at a distance to each another, at least one adjustable length having a first end region and a second end region which are in connection with the fixation plates and at least one actuation unit to adjust the length of the strut in order to adjust the distance and / or orientation between the fixation plates. The actuation unit is in a fixed connection with at least one of the fixation plates as well as with at least one of the end regions of the respective strut in order to connect the strut with the fixation plate. The actuation unit comprises a feedback unit which provides the user with a feedback concerning the degree of the actuation.
Owner:STRYKER EURO OPERATIONS HLDG LLC
External Fixator
An external fixator for treating a fracture of a long bone has six extension arms which are extendable out of and retractable into a main body. The six extension arms are arranged into two sets of three, with each set of three extension arms being able to support a fixation ring. Each extension arm is pivotable at a joint and extendable so as to allow the ring to be set at a wide range of angular positions relative to the main body. The three extension arms and the ring each define a wrap angle about the axis of the long bone being treated. The longitudinal position of each extension arm can be changed either with a coarse adjustment capability or with a fine adjustment capability, with the coarse adjustment capability being through rotation of a thumb wheel. The six extension arms are also arranged into three opposing pairs, with each pair of extension arm shafts is disposed in an abutting relationship in the main body such that the extension arm shafts extend or retract out opposing sides of the main body.
Owner:MILLENNIUM MEDICAL TECH INC
Electromechanically driven external fixator and methods of use
A device for electromechanically and / or electro-pneumatically positioning a fractured bone having a first clamping unit adapted for attachment to the bone by at least one first bone fastener, a second clamping unit adapted for attachment to the bone by at least one second bone fastener, and at least one of: (i) a translation component operatively driven by a translational driver for relative translational movement of one clamping unit with respect to the other along a translational axis; (ii) an angulation component operatively driven by an angulational driver for relative angulational movement of one clamping unit with respect to the other along an articulation axis; and (iii) a rotational component operatively driven by a rotational driver for relative rotational movement of one clamping unit with respect to the other along a rotational axis.
Owner:ZIRAN BRUCE H +1
External fixator including an angular correction module and related method
An external fixator for securing a bone through a first bone screw connected to a first portion of the bone and a second bone screw connected to a second portion of the bone. The external fixator includes a first bone screw clamping assembly for receiving the first bone screw and a second bone screw clamping assembly for receiving the second bone screw. The external fixator additionally includes an angular correction module connecting the first and second bone screw clamping assemblies. The angular correction module includes a first element and a second element coupled to allow articulation of the first bone screw clamping assembly relative to the second bone screw clamping assembly about a center of rotation spaced from the module.
Owner:BIOMET MFG CORP
Telescopic strut for an external fixator
ActiveUS8057474B2Improve usabilityReadily and quickly changed in its lengthInternal osteosythesisJoint implantsExternal fixatorSpherical shaped
A telescopic strut for use with an external fixator includes a tube and a rod, especially a threaded rod being in threaded engagement with the tube. The tube comprises at least one hole for accommodating a ball, the ball having the spherical shape for engagement with the threaded rod. A sleeve is provided on the portion of the tube comprising the hole. The sleeve comprises a non-spherical inner cross-section. The greater diameter of the sleeve has a dimension which is at least the sum of the outer diameter of the threaded rod plus the diameter of an accommodating ball for allowing direct axial movement of the threaded rod against the tube in such a rotational position of the sleeve. The lesser diameter has a dimension to place the ball within the threaded rod for allowing a rotational movement of the threaded rod against the tube.
Owner:STRYKER EURO OPERATIONS HLDG LLC
Clamp for External Orthopaedic Fixing Device
InactiveUS20110112533A1Excellent and efficient distributionRod connectionsFriction grip releasable fasteningsExternal fixatorEngineering
A clamp (1; 1′; 1″) for orthopaedic external fixator (100), practical and safe to use, comprising a first attachment (2), provided with a pair of arms respectively internal (22) and external (21) defining one with the other a lateral housing (20) with C-shaped section for housing a first connection bar (101) and comprising a mobile jaw (5) hinged on its external arm (21); a second attachment (3; 3′; 3″) for allowing the connection of the clamp (1; 1′; 1″) to a second component (102; 102′) of the orthopaedic external fixator (100); a tightening element (4), at least partially threaded, which traverses and connects the first and the second attachment (2, 3; 3′; 3″) along an axis of rotation (x) and whereto the mobile jaw (5) is subjected, the tightening of the tightening element (4) bringing the clamp from a loosened configuration, at which the two attachments (2, 3; 3′; 3″) are reciprocally rotatable around the axis of rotation (x), to a tightened configuration, at which the relative orientation of the attachments (2, 3; 3′; 3″) is blocked; causing a pressure of the mobile jaw (5) on the first connection bar (101) in the direction of the internal arm (22), performing therefore an action of restraining of the first connection bar (101) in the lateral housing (20).
Owner:ORTHOFIX SRL
Trauma joint, external fixator and associated method
InactiveUS20070123856A1Shorten the timeSaving of surgeon ' timeInvalid friendly devicesFractureTrauma surgeryExternal fixator
A device for use in an external fixator for use in trauma surgery for rigidly connecting a first object to a second object is provided. The device includes a body and a first articulating member for connecting the device to the first object. The first articulating member is lockable and un-lockable to the body to selectively provide articulation with and rigid connection to the body. The device further includes a second articulating member for connecting the device to the second object. The second articulating member is lockable and un-lockable to the body to selectively provide articulation with and rigid connection to the body. The body, the first articulating second and the second articulating member are adapted for simultaneous locking and unlocking to each other.
Owner:DEPUY PROD INC
External fixation system
ActiveUS7955334B2Overcome disadvantagesEasy to placeInvalid friendly devicesFractureFiberExternal fixator
An orthopedic fixation ring for an external fixator has a ring or a ring-segment extending around a center axis. The ring comprises a first surface running perpendicular to the center axis, a second surface which is parallel to the first surface, and a plurality of spaced apart through openings running parallel to the center axis and extending through the fixation plate. The fixation plate has at least a third surface which is parallel to the first surface spaced outwardly thereof with respect to the center axis. A further set of through openings extends from the first surface to the third surface. A fourth surface may be provided which is axially displaced from the second surface with respect to the center axis. The ring preferably is circular or part-circular and is molded from carbon fiber reinforced PEEK.
Owner:STRYKER EURO OPERATIONS HLDG LLC
Prevention of re-use of a medical device
A disposable medical device is especially an articulation for the relative positioning of fixation bars or of pins of an external fixator, having at least a clamping means to be introduced into the medical device, the clamping means comprises an element that alters its appearance when being heated over a threshold temperature, thus giving optical or mechanical information that the device should not be used a second time.
Owner:STRYKER EURO OPERATIONS HLDG LLC
External fixator
InactiveUS20090287212A1Increase freedomHigh strengthFractureInvalid friendly devicesExternal fixatorBall joint
A work for fixing a bone by an external fixator is facilitated. The external fixator comprises a plurality of ball joints each comprising a plurality of pins inserted into a bone, a coupling member, a rotary member that fixes pins to the coupling member relatively, is coupled by the coupling member and forms a ball at least partially, a supporting member in which a first supporting member and a first screw for supporting the ball rotatably are formed, and a tubular fastening member that contains the ball, has openings at the opposite ends, is provided at one end with a second screw corresponding to the first screw, and is provided at the other end with a second supporting portion for pushing the ball against the first supporting portion when the second screw is driven into the first screw, wherein the pins and the coupling member are fixed to the supporting member and the rotary member.
Owner:NAGOYA UNIVERSITY
External fixator system
An external fixation frame for correcting a bone deformity includes a first fixation ring and a second fixation ring. A posterior adjustable length strut couples a posterior portion of the first fixation ring to a posterior portion of the second fixation ring and has universal joint. Medial and lateral adjustable length struts couples medial and lateral portions of the first fixation ring to medial and lateral portions of the second fixation ring respectively, each of the medial and lateral adjustable length struts including a constrained hinge joint. The fixation frame also includes a half ring hingedly coupled to the second fixation ring, and an anterior adjustable length strut coupling an anterior portion of the first fixation ring to the half ring.
Owner:STRYKER EURO OPERATIONS HLDG LLC
Axial external fixator
The invention relates to a new type of axial unilateral external splint device for stabilizing bone fractures, comprising an extendible rod-like middle body (2) and oppositely located bone screw clamps (5, 6) which are articulated to respective ends (3, 4) of the rod-like middle body (2) by means of ball joints. Advantageously, a ball-and-socket joint (16) is mounted to each clamp (5, 6), within a main body (20) with which a bone screw clamping arrangement (25, 26, 21, 22, 23) is associated or co-operates. Also provided are ancillary members (30) adapted for removable association with the end of each clamp (5, 6) to allow each clamp to be more suitable for use, depending on the different operative installation conditions of the fixator.
Owner:ORTHOFIX SRL
External fixator
InactiveUS20060235383A1Easy to assemble and disassembleMinimally invasiveFractureInvalid friendly devicesInjury causeExternal fixator
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.
Owner:WRIGHT MEDICAL TECH
Ring fixator
An external fixator apparatus (1) of the ring type for stabilizing bone fractures, including at least one pair of rings (6, 7), of which one (6) is proximal and the other (7) is distal, and at least one tie rod (8, 9, 10) interconnecting the rings (6, 7) to each other. The rod (8, 9, 10) is split into two rod sections (11, 12) connected together by a joint (21) and the joint (21) includes a pivot mount (22) having a predetermined axis (x—x) for the angular displacement of the rod sections (11, 12), and a sliding mount (23) according to a pre-determined sliding direction (y—y) for offsetting the rod sections (11, 12).
Owner:ORTHOFIX SRL
Dynamic External Fixator And Methods For Use
An external fixation system and method for realigning, compressing or distracting broken bones has a planar ring element with an adjustable device having a body releasably mounted on the ring element. The adjustable device includes a first member for movement in a direction generally perpendicular to the ring element. A second member is pivotally connected to the first member for angular movement with respect to the ring. A third member is mounted on the second member for movement in a direction parallel to the second member and with respect to a circumference of the planar ring element. The method includes providing an external fixation system and inserting a k-wire through a first piece of bone and affixing the k-wire or half pin to the ring element. Then inserting a second k-wire or half pin through a second piece of bone and affixing the k-wire or half pin to an adjustable device. The pieces of bone are realigned, compressed or distracted by adjusting at least one of a first and second adjustable member forming the device.
Owner:STRYKER EURO OPERATIONS HLDG LLC
Method of fracture fixation
An external fixator includes a main body and an outrigger for extending over a fractured joint, such as a wrist joint. The main body can be positioned next to a right arm, or flipped over and positioned next to a left arm. The outrigger is attachable to extend either to the left or to the right of the main body, as appropriate. A distal body is removeably connectable to the distal end of the main body, and the distal body can be affixed to bone on the opposite side of the fracture to immobilize the joint where the fracture occurs. The distal body is connected to the main body with an adjustable securement section which provides six degrees of adjustment freedom. The outrigger is attached to the main body through a slide plate in a dual rail configuration which provides two dimensions of adjustment. Fragment pin supports ride in a track of the outrigger, and provide seven degrees of adjustment freedom for directed fixation of fragments at the fracture site. The outrigger is pivotally adjustable relative to the main body, and includes track portions separated by a wrap around angle. The major components of the fixator are molded of plastic. A surgical technique using the fixator includes immobilizing the joint for an initial healing duration and retaining fragment pins in place during a secondary healing duration.
Owner:MILLENNIUM MEDICAL TECH INC
External fixator element
ActiveUS20070233061A1Reduce coefficient of frictionImprove surface roughnessInvalid friendly devicesFractureFiberExternal fixator
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.
Owner:STRYKER EURO OPERATIONS HLDG LLC
Multi-purpose external fixator
ActiveUS20120203225A1Easy to implantRapid and easy to useInvalid friendly devicesFractureExternal fixatorRetainer
A multi-purpose external fixator (1) comprises at least one screw (2) to be implanted in a bone fragment (3) and a frame (7), in turn comprising at least one clamp (8) and at least one bar (9); the clamp (8) comprising a central body (11), in which a slot (12) is made for connection to the screw (2), an element (13) for locking the screw (2) in the slot (12) and a lever (14) for operating the locking element (13); the lever (14) is hinged to the central body (11) and can move away from and towards an end position for engagement of the locking element (13) and stable connection of the screw (2) to the slot (12); in the end position the lever (14) and the screw (2) are positioned in a T-shaped configuration relative to each other, in which the lever (14) forms a grip for implanting the screw (2) in the bone fragment.
Owner:CITIEFFE
Spherical universal joint for external bone fixator and regulating type bionic external bone fixator
ActiveCN103006302AKeep free spinsAdd self-locking functionExternal osteosynthesisExternal fixatorUniversal joint
The invention relates to a spherical universal joint for an external bone fixator and a regulating type bionic external bone fixator. The spherical universal joint for the external bone fixator comprises a spherical head, a sleeve, a sleeve cover, a ball slot, a ball bowl, a locking shaft and a locking slide block, wherein the spherical head comprises a joint ball and a threaded type spherical universal joint connector A arranged on the joint ball, the joint ball is arranged on the inner side of the sleeve, the side of the joint ball close to the threaded type spherical universal joint connector A is contacted with the arc-shaped surface of the sleeve, the threaded type spherical universal joint connector A extends out of one end of the sleeve, the sleeve cover is fixedly connected with the other end of the sleeve, the outer side face of the sleeve cover is provided with a threaded type spherical universal joint connector B, and the inner side face of the sleeve cover is provided with a groove for arrangement of the locking slide block. The regulating type bionic external bone fixator with the spherical universal joint has the advantages of simple structure, light weight, low cost, regulating capability and flexible operation, and targeted and personalized combination and regulation can be realized.
Owner:夏和桃
External fixator assembly
InactiveUS20100179548A1Improve versatilityEliminate possibility of interferenceFractureInvalid friendly devicesBiomedical engineeringExternal fixator
A support structure for use with an external fixator assembly including, but not limited to, a fixator assembly for the ankle area of the body which may further include an ankle stabilization portion. The support structure is similar in function but distinguishable in structure from a “halo-ring” and comprises a base having a substantially annular configuration and being operatively disposed in at least partially surrounding relation to a leg area which corresponds to the stabilized ankle area. An extension assembly includes at least one but preferably a plurality of two elongated extension members extending outwardly from the base and in spaced relation to and substantially aligned with the ankle stabilization portion. The base and the two extension members are structured for connection to a plurality of struts which may be variably and selectively disposed in interconnecting relation to the ankle stabilization area and / or other portions of the external fixator assembly.
Owner:MDPO LLC
Strut joint for an external fixator
A ball joint for use with an external fixator has a sleeve in engagement with a rod of a strut for the external fixator. A ring insert and a blocking element are provided, having a combined circumferential surface being able to be introduced into a hole of a ring of an external fixator. The ring insert and blocking element have complementary wedge surfaces allowing a relative radial displacement therebetween to enlarge the diameter of the combined circumferential surface for blocking the ball joint inside the hole. Additionally the sleeve comprises a spherical hollow ball portion with concentrical inner and outer spherical portions, wherein the outer spherical portion engages a complementary spherical socket of the blocking element and wherein the inner spherical portion is engaged by a ball nut. A connection element extends through the sleeve, blocking element and ring insert, wherein a radial displacement and axial displacement of the ring insert and blocking element are activated by the connection element.
Owner:STRYKER EURO OPERATIONS HLDG LLC
External fixator system
An external fixation frame for correcting a bone deformity includes a first fixation ring and a second fixation ring. A posterior adjustable length strut couples a posterior portion of the first fixation ring to a posterior portion of the second fixation ring and has universal joint. Medial and lateral adjustable length struts couples medial and lateral portions of the first fixation ring to medial and lateral portions of the second fixation ring respectively, each of the medial and lateral adjustable length struts including a constrained hinge joint. The fixation frame also includes a half ring hingedly coupled to the second fixation ring, and an anterior adjustable length strut coupling an anterior portion of the first fixation ring to the half ring.
Owner:STRYKER EURO OPERATIONS HLDG LLC
Self-locking joint for external bone fixator and regulating type bionic external bone fixator
The invention relates to a self-locking joint for an external bone fixator and a regulating type bionic external bone fixator. The self-locking joint for the external bone fixator comprises a self-locking joint head A, a self-locking joint head B, a self-locking joint pin shaft and a spherical pad, wherein the self-locking joint head A comprises a spherical self-locking joint hinge seat and a threaded self-locking joint connector A arranged on the spherical self-locking joint hinge seat, the self-locking joint head B comprises a self-locking joint hinge plate and a threaded self-locking joint connector B arranged on the self-locking joint hinge plate, the self-locking joint hinge plate is connected with the spherical self-locking joint hinge seat through the self-locking joint pin shaft in a hinge mode, the diameter of the self-locking joint hinge plate is smaller than the diameter of the spherical self-locking joint hinge seat, and the spherical pad is sleeved on the threaded self-locking joint connector B and is contacted with the arc-shaped surface of the spherical self-locking joint hinge seat. The regulating type bionic external bone fixator with the self-locking joint has the advantages of simple structure, light weight, low cost, regulating capability and flexible operation, and targeted and personalized combination and regulation can be realized.
Owner:夏和桃
Dynamic external fixator and methods for use
Owner:STRYKER EURO OPERATIONS HLDG LLC
Fast extension rod for bone external fixing device and adjustable bionic bone external fixing device
ActiveCN102860861AImprove securityImprove advancedExternal osteosynthesisExternal fixatorMechanical energy
Owner:夏和桃
External fixator assembly
ActiveUS7806843B2Maximum versatilityEliminate or significantly reduce such knownFractureInvalid friendly devicesExternal fixatorMedicine
Owner:MDPO LLC
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