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1692 results about "Bone screws" patented technology
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Bone Screw Definition. A bone screw is a metal implant inserted into the bone. Screws are used to immobilize fractured bone segments to aid in the healing process, and as an adjunct to spine fusion surgery to help hold implants in place.
Non-metallic implant devices and intra-operative methods for assembly and fixation
This invention relates to orthopedic implants and to methods of treating bone defects. More specifically, but not exclusively, the present invention is directed to non-metallic implants and to methods for intra-operative assembly and fixation of orthopedic implants to facilitate medical treatment. The non-metallic implant assembly can be secured to underlying tissue by a fastener, such as a bone screw, that is capable of swelling on contact with fluid in the underlying tissue. Alternatively, the non-metallic implant assembly can be assembled intra-operatively using a fastener that is adhesively bonded to a bone plate or the bone plate can be deformed using heat, force, or solvents to inhibit withdrawal of the fastener. In preferred embodiments, both the fastener and the bone plate are formed of biodegradable material.
Owner:WARSAW ORTHOPEDIC INC
Stabilization device for bones comprising a spring element and manufacturing method for said spring element
ActiveUS20050154390A1Easy to implementElastic fitSuture equipmentsInternal osteosythesisCoil springBiomedical engineering
An elastic or flexible element for use in a stabilization device for bones or vertebrae is provided. The elastic or flexible element is provided in the form of an essentially cylindrical body with a first end and a second end opposite thereto, wherein at least one of the opposite ends of the cylindrical body comprises a coaxial bore hole with an internal thread for connecting to a shaft and / or a head of a bone screw or for connecting to a rod section. The present invention further provides a bone anchoring element, e.g. a bone screw, with a shaft for the anchoring in a bone, whereby the shaft comprises an elastic or flexible section which is formed integrally with the shaft or as a separate elastic or flexible element. It is preferable for the elastic section to be implemented in the form of a helical spring. Moreover, the present invention provides a stabilization device for bones, for instance for vertebrae, said device comprising at least one bone anchoring element according to the invention, a second bone anchoring element and a rod or plate connecting the bone anchoring elements.
Owner:BIEDERMANN TECH GMBH & CO KG
Dynamic stabilization assemblies, tool set and method
A hinged bone screw and tool set is used for implanting such bone screws in a human spine, followed by the implantation of a longitudinal connecting member into the bone screws. The hinged bone screw includes a shank with an upper portion and a receiver with integral arms forming a U-shaped channel. A lower curved seat partially defining the U-shaped channel cooperates with an upper portion of the bone screw shank for hinged movement of the shank with respect to the receiver. The tool set includes an insertion tool, a bone screw driver, a reduction tool and a closure starter. The insertion tool includes a bone screw attachment structure and a laterally opening channel. The insertion tool further includes a threaded portion for cooperation with the reduction tool to provide synchronized placement of a closure structure in the bone screw receiver while reducing and capturing a longitudinal connecting member within the receiver. Further alternative bone screws are hinged, polyaxial or fixed and include lordosing or kyphosing lateral surfaces.
Owner:NUVASIVE
Surgical devices assembled using heat bondable materials
Surgical devices such as implants or suture fastenings are assembled from a plurality of discrete components, one of which components includes a heat bondable plastic material for bonding the components together. At least two components are bonded to each other by the applying heat to the heat bondable plastic material of one component. The heat bondable plastic material is preferably a polymeric or composite material suitable for surgical applications and implantation in humans, and may be a biodegradable material. A laser may be used as the heat source. The present invention is advantageously embodied in heat bonded fastenings for sutures or K-wires, in which a variety of different suture anchors are usable, including expandable distal suture anchors. Other embodiments include a metal bone plate which is held to bone by a metal bone screw and a nut of bondable material bonded to the plate to secure the connection; a piece of bondable material bonded to a metal prosthesis to custom fit the prosthesis; and a surgical implant custom formed by bonding together a plurality of discrete elements one or more of which is bondable.
Owner:P TECH +1
Polyaxial bone screw
ActiveUS7087057B2Efficient retentionSuture equipmentsInternal osteosythesisAngular orientationFriction force
The present invention generally provides a polyaxial fixation device having a shank with a spherical head formed on a proximal end thereof, and a receiver member having an axial passage formed therein that is adapted to polyaxially seat the spherical head of the shank. The polyaxial bone screw further includes an engagement member that is adapted to provide sufficient friction between the spherical head and the receiver member to enable the shank to be maintained in a desired angular orientation before locking the spherical head within the receiver member.
Owner:HAND INNOVATIONS +1
Orthopedic implant rod reduction tool set and method
A tool set for implanting a rod in a human spine in conjunction with bone screws. The tool set includes a pair of end guide tools that receive opposite ends of the rod in channels and under manipulation by a surgeon facilitate transport of the rod toward the bone screws attached to the guide tools. Intermediate guide tools having guiding pass through slots are utilized to guide intermediate locations along the rod toward associated bone screws. An attachment structure operably connects the guide tools to the bone screws. The guide tools each include a lower guide and advancement structure to allow a closure top with mating structure to be rotated and driven downward against the rod and to cooperate with similar structure in the bone screw to seat and lock the rod therein. A method utilizing the tool set allows a surgeon to percutaneously implant the rod in the patient.
Owner:NUVASIVE
Multi-Directional fasteners or attachment devices for spinal implant elements
InactiveUS6019759AIncreased bone volumeAvoid damageSuture equipmentsInternal osteosythesisMultiple pointSpinal implant
An apparatus, method and system for treating spinal conditions by moving or spatially fixing at least one vertebra relative to another vertebra. The invention includes a link member the ends of which are configured to be secured to adjacent vertebrae and which are offset from a central portion of the link member. The link members can be in the form of a C-shaped or V-shaped rod or plate to form the offset. The offset provides increased bone volume that can be used for grafts or fusion. Attachment structure in the form of bone screws, bolts, or hook members are provided to secure the link members to respective vertebrae or other bones. A plurality of link members can be connected in chain-like fashion to connect multiple points on a plurality of vertebrae or other bones even though those points are nonlinear. In another aspect of the invention, a multi-directional attachment member is provided and may be used with the link members to form a spinal implant or external bone fixation system.
Owner:ROGOZINSKI CHAIM
Multi-angular fastening apparatus and method for surgical bone screw/plate systems
InactiveUS6955677B2Maximum flexibilityWide rangeSuture equipmentsInternal osteosythesisFiberEngineering
A fastening apparatus includes a fastener and a fastener receiving member. The apparatus enables the fastener to be affixed to the fastener receiving member at a variable insertion angle selected by the user. The fastener includes an elongate section and an adjoining head section. Both the elongate section and the head section are threaded. The fastener receiving member includes one or more apertures through which one or more corresponding fasteners can be inserted. Each aperture includes a contact region formed or disposed on an inside surface defining the aperture. The contact region includes a porous matrix of protrusions or fiber metal having a density and strength sufficient to render contact region tappable by the thread of the head section of the fastener. The thread on the head section is driven into the contact region at the selected insertion angle. As a result, the thread of the head section taps into the material of the contact region such that the fastener is affixed to the fastener receiving member and maintained at the insertion angle.
Owner:THE UNIV OF NORTH CAROLINA AT CHAPEL HILL
Surgical devices assembled using heat bondable materials
Surgical devices such as implants or suture fastenings are assembled from a plurality of discrete components, one of which components includes a heat bondable plastic material for bonding the components together. At least two components are bonded to each other by the applying heat to the heat bondable plastic material of one component. The heat bondable plastic material is preferably a polymeric or composite material suitable for surgical applications and implantation in humans, and may be a biodegradable material. A laser may be used as the heat source. The present invention is advantageously embodied in heat bonded fastenings for sutures or K-wires, in which a variety of different suture anchors are usable, including expandable distal suture anchors. Other embodiments include a metal bone plate which is held to bone by a metal bone screw and a nut of bondable material bonded to the plate to secure the connection; a piece of bondable material bonded to a metal prosthesis to custom fit the prosthesis; and a surgical implant custom formed by bonding together a plurality of discrete elements one or more of which is bondable.
Owner:P TECH +1
Constrained motion bone screw assembly
ActiveUS20060200131A1Prevent rotationRestrict movementSuture equipmentsInternal osteosythesisCompression memberBiomedical engineering
A bone screw assembly includes an anchor portion and a head portion, such as a rod-receiving portion, movably mounted to the anchor portion to allow for controlled angulation between the anchor portion and the head portion. The anchor portion is pivotable in one or more selected directions about an axis relative to the head portion. A restriction member, which may be a rod seat, prevents the anchor portion from pivoting in one or more different directions about another axis relative to the head portion and / or a spinal fixation element received in the head portion. The restriction member may be inserted in the head portion to control direction that the anchor portion pivots relative to the head portion. The restriction member may also serve as a compression member and / or rod seat for seating a spinal rod coupled to the bone screw assembly.
Owner:SARL DEPUY SPINE +1
Self-tapping resorbable two-piece bone screw
An orthopedic interference screw has a hard, self-threading front section and a bioabsorbable rear section. The two sections are conjoined and threaded such that the hard front section cuts threads into the bone and the softer rear section follows the threads into the bone. Preferably, the screw has an axial bore for matingly receiving a turning tool such as a hex wrench.
Owner:ETHICON INC
Degradable implantable medical devices
InactiveUS20060229711A1Reduce probabilityLower resistanceStentsBlood vesselsVascular implantBlood vessel
Devices and methods are provided for an implantable medical device which is degradable over a clinically relevant period of time. The medical devices may have the form of implants, graft implants, vascular implants, non vascular implants, wound closure implants, sutures, drug delivery implants, biologic delivery implants, urinary tract implants, inter-uterine implants, organ implants, bone implants including bone plates, bone screws, dental implants, spinal disks, or the like. In preferred embodiments, the implantable medical device comprises an implantable luminal prosthesis, such as vascular and non-vascular stents and stents grafts.
Owner:ELIXIR MEDICAL CORP
Anterior spinal instrumentation and method for implantation and revision
InactiveUSRE37161E1Reliable and decompressionEnhanced rigidity and fixationInternal osteosythesisBone implantSpinal columnBone trephine
Owner:MICHELSON GARY K +1
Adjustable rod and connector device and method of use
InactiveUS6991632B2Minimal displacementEasy to useInternal osteosythesisJoint implantsImplanted deviceIliac screw
Owner:RITLAND STEPHEN
Vertebral interbody cage with translatable locking screw
A vertebral cage is provided for use in preserving the space between adjacent vertebral during the process of spinal fusion. In particular, this cage has an open modified oval peripheral shape with a continuous fluid anterior wall having angled screw passages accessible through co-planar openings to allow the construct to be stabilized between adjacent vertebral bodies through their endwalls. In addition, the cage has a back to front wedge taper with pull-out resistant ratchet surfaces. Further, in a second aspect of the invention, the screw passages have a unique locking mechanism provided by oversized internal threads in combination with a second locking thread on the head of the associated bone screws that allows for axial translation of the screws within the screw passages. This in turn permits play in the angulation of the screw relative to the anchoring bone in order to optimize the screw placement in the bone.
Owner:ZIMMER BIOMET SPINE INC
Surgical power drill including a measuring unit suitable for bone screw length determination
Owner:SYNTHES GMBH
Orthopedic implant rod reduction tool set and method
ActiveUS20050192570A1Good adhesionEasy to disengageInternal osteosythesisDiagnosticsEngineeringBone staple
A tool set for implanting a rod in a human spine in conjunction with bone screws. The tool set includes a pair of end guide tools that receive opposite ends of the rod in channels and under manipulation by a surgeon facilitate transport of the rod toward the bone screws attached to the guide tools. Intermediate guide tools having guiding pass through slots are utilized to guide intermediate locations along the rod toward associated bone screws. An attachment structure operably connects the guide tools to the bone screws. The guide tools each include a lower guide and advancement structure to allow a closure top with mating structure to be rotated and driven downward against the rod and to cooperate with similar structure in the bone screw to seat and lock the rod therein. A method utilizing the tool set allows a surgeon to percutaneously implant the rod in the patient.
Owner:NUVASIVE
Highly-versatile variable-angle bone plate system
ActiveUS20080140130A1Improve versatilitySuture equipmentsThread cutting machinesEngineeringInternal fixation
A bone plate system for internal fixation of bone fractures includes a bone plate having a plurality of bone plate holes. The holes are constructed to receive either a non-locking, locking, or variable-angle locking bone screw. The holes have discrete columns of teeth or thread segments arranged around the inner surface of the hole for engaging threads on the heads of locking and variable-angle locking bone screws. Conventional locking bone screws engage the bone plate coaxially with the central axis of the bone plate hole. Variable-angle locking bone screws can engage the bone plate at a selectable angle within a range of selectable angles relative to the central axis of the bone plate hole. The head of the variable-angle locking screw is at least partially spherical, and the thread thereon has a profile that follows the arc-shaped radius of curvature of the spherical portion of the screwhead.
Owner:DEPUY SYNTHES PROD INC
Dynamic fixation assemblies with inner core and outer coil-like member
A dynamic fixation medical implant includes a longitudinal connecting member assembly having an elongate coil-like outer member and an inner cylindrical core attached to the outer member at only one end thereof. Some assemblies include a second longitudinal connecting member in the form of a rod that is fixed to the inner core and extends outwardly from the assembly. Certain assemblies include a threaded core or threaded inserts that cooperate with a helical slit of the coil-like outer member. Two or more cooperating bone screw assemblies attach to the connecting member assembly. The bone screw assemblies may include upper and lower compression members for affixing to and cradling the coil-like outer member only, allowing relative movement between the outer member and the inner cylindrical core. Press fit or snap-on features attach one end of the coil-like outer member to one end of the inner cylindrical core.
Owner:JACKSON
Polyaxial bone screw with torqueless fastening
ActiveUS20050070899A1Avoid disassemblyLarge caliberSuture equipmentsInternal osteosythesisBiomedical engineeringBone screws
An adjustable spinal fixation system is composed of a collection of anchoring assemblies attached, via a variety of connectors, to spine-stabilizing rods. The anchoring assemblies include a linking member attached in a ball-and-socket fashion to a bone-engaging member that is adapted to engage a spinal bone of a patient. The linking member joins one of the included connectors to an associated bone-engaging member. The connectors are selectively attached to one of the stabilizing rods. The anchoring assemblies each include a support collar and a split retention ring that cooperate to allow adjustment of the bone-engaging member and corresponding connector during surgery. When surgery is complete, a linear engaging fastener cooperates with the support collar and split retention ring to maintain the relative position of the entire fixation system, preventing unwanted movement between the system components.
Owner:SPINAL
Spinal fixation tool set and method for rod reduction and fastener insertion
A tool for implantation of a rod into a bone screw implanted in a human spine includes a guide member having a laterally opening channel disposed along an entire length thereof for side loading and receiving an implant fastener. A rod pushing member and a handle with a laterally opening channel are coaxial with the guide member, with the rod pushing member being rotatingly mateable to the guide member and the handle having a spring attachment mechanism for attaching the handle to the guide member. The guide member includes spring tabs for attachment to a bone screw, the tabs biased away from the bone screw. The rod pushing member includes a sleeve that extends substantially about the guide member, pressing the spring tabs toward the bone screw and into apertures on the bone screw arms. The rod pushing member sleeve also operatively functions as a rod pusher that abuts a rod as the sleeve is translated along the guide member and toward the bone screw. The handle lateral opening receives and supports a manipulation tool for inserting and installing an implant fastener for attaching the rod to the bone screw.
Owner:JACKSON
Connection rod for screw or hook polyaxial system and method of use
InactiveUS7207992B2Increase the areaPrevent rotationInternal osteosythesisJoint implantsCouplingPedicle screw
Owner:RITLAND STEPHEN
Sacral or iliac connector
Methods and devices are provided for connecting a spinal fixation construct to the spine, and preferably to the ilium and / or sacrum. In one exemplary embodiment, a spinal connector is provided having an elongate configuration with opposed thru-bores formed therein. Each thru-bore can be configured to receive a bone screw for attaching the spinal connector to bone. The spinal connector can also include a receiving portion formed thereon or removably mated thereto for mating a spinal fixation element, such as a spinal rod, to the spinal connector. In certain exemplary embodiments, the receiving portion can be positioned between the opposed thru-bores. In use, the spinal connector can be implanted in the sacrum and / or ilium and it can receive a laterally or horizontally extending spinal fixation element therethrough. The lateral spinal fixation element can mate to a longitudinal spinal fixation element which is mated to one or more vertebrae in a patient's spine, thereby anchoring a construct to the sacrum and / or ilium.
Owner:DEPUY SPINE INC (US)
Helical reverse angle guide and advancement structure with break-off extensions
A spinal fixation device combines an anchor member with an open receiver, such as a polyaxial bone screw or a hook, with a rotatable closure that operably clamps a spinal fixation rod to the anchor member. The anchor member has spaced apart arms forming a rod receiving channel. The arms have arm extensions or tabs connected to main portions of the arms by weakened regions to enable the extensions to be broken off or separated after the rod is clamped. The closure and inner surfaces of the arms and tabs have mating helical, anti-splay, reverse angle guide and advancement structure formed thereon that mechanically cooperate to prevent splaying of the arms and the extensions as the closure is advanced into the rod receiving channel. The increased length of the arms with the extensions enables the rod to be captured at a greater distance from the seat of the channel and allows the rod to be urged toward the seat by helical advancement of the closure into the channel, starting between the extensions. Separation of the break-off extensions results in an implant with a desirable low profile.
Owner:JACKSON
Slidable bone plate system
The invention is directed to a bone plate system. The bone plate system comprises a base plate having two generally parallel elongated screw slots extending therethrough. Two bone screws are provided that are capable of securing the base plate to a bone by insertion through the screw slots into the bone. Each bone screw has a screw head and a threaded portion extending therefrom. An interference device is attached to the base plate and retains the bone screws while permitting the bone screws to toggle and to controllably slide in the screw slots of the base plate. This design is particularly useful for joining adjacent vertebral bodies, as it permits controlled settling of the vertebral bodies, thereby enhancing the healing process.
Owner:NUVASIVE
Polyaxial Bone Screw
InactiveUS20060241599A1Internal osteosythesisJoint implantsAngular orientationBiomedical engineering
Owner:DEPUY SPINE INC (US)
Surgical devices having a biodegradable material with a therapeutic agent
Surgical devices such as implants or suture fastenings are assembled from a plurality of discrete components, one of which components includes a heat bondable plastic material for bonding the components together. At least two components are bonded to each other by the applying heat to the heat bondable plastic material of one component. The heat bondable plastic material is preferably a polymeric or composite material suitable for surgical applications and implantation in humans, and may be a biodegradable material. A laser may be used as the heat source. The present invention is advantageously embodied in heat bonded fastenings for sutures or K-wires, in which a variety of different suture anchors are usable, including expandable distal suture anchors. Other embodiments include a metal bone plate which is held to bone by a metal bone screw and a nut of bondable material bonded to the plate to secure the connection; a piece of bondable material bonded to a metal prosthesis to custom fit the prosthesis; and a surgical implant custom formed by bonding together a plurality of discrete elements one or more of which is bondable.
Owner:P TECH +1
Polyaxial bone screw apparatus
ActiveUS20050049589A1Reduce manufacturing costConvenient and secure in useSuture equipmentsInternal osteosythesisEngineeringScrew thread
A polyaxial bone screw includes a head member and a shank member. The shank has a capture end and an opposite threaded end for threaded insertion into a vertebra. The head has a U-shaped cradle for receiving a spinal fixation rod and a central bore for receiving the capture end of the shank. An expandible retainer ring with a radial split is snapped onto the capture end of the shank to retain it within the head. The retainer ring has a spherical outer surface which forms a ball joint with a spherical socket cavity within the head to enable the head to be angled relative to the shank. A threaded closure plug is tightened within the cradle to clamp the rod into engagement with a knurled dome on the capture end of the shank to secure the rod relative to the vertebra.
Owner:JACKSON
Multi-axial bone attachment assembly
ActiveUS20050283157A1Increase allowable angulationSuture equipmentsInternal osteosythesisPosterior fixationBiomedical engineering
A posterior fixation system includes a saddle member and an anchoring member. The anchoring member anchors the saddle member to bone. The saddle member includes a pair of upright portions that define a channel. The saddle member further has a hole therethrough bounded by an inner wall, and the hole forms a lower opening in the saddle member. The lower opening in the saddle member may contain angular cutouts placed symmetrically about the axis of the saddle to increase the allowable angulation of the bone screw in relationship to the axis of the saddle. The channel is adapted to receive an orthopedic rod, and the hole in the saddle member is adapted to receive the anchoring member. The saddle member and the anchoring member can be coupled so as to allow multi-axial movement of the members.
Owner:WARSAW ORTHOPEDIC INC
Instrumentation and methods for use in implanting a cervical disc replacement device
Owner:HOWMEDICA OSTEONICS CORP
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