Class / Patent application number | Description | Number of patent applications / Date published |
606315000 | Multiple threads on a single fastener | 25 |
20080234763 | SURGICAL COMPRESSION BONE SCREW - A screw implant for stabilizing a bone material having a two separated regions has improved features that generates better compression of the two regions than conventional compression screws. The screw implant has a shaft including a longitudinal axis, a proximal portion, and a distal portion, the proximal and distal portions having proximal and distal threads thereon respectively. The minor diameter of the proximal thread is substantially equal to the major diameter of the distal thread and the proximal and distal threads have substantially the same thread profiles and same thread pitch. The proximal thread is continuous without any breaks, such as self-tapping flutes, and when the screw implant is inserted by rotation into the bone material, the proximal and distal portions threadably engage the first and second regions, respectively, to provide compression therebetween. | 09-25-2008 |
20080300639 | Bone Screw, In Particular for Osteosynthesis - A bone screw ( | 12-04-2008 |
20090275993 | APPARATUS AND METHODS FOR INSERTING FACET SCREWS - An apparatus includes a bone screw, a nut, and a washer. The bone screw has a first threaded portion, a second threaded portion, and a recessed portion disposed between the first threaded portion and the second threaded portion. The first threaded portion is configured to be threaded into a bone tissue. The nut is threadedly coupled to the second threaded portion of the bone screw. The nut having a tool engagement portion and a seating portion. The washer is disposed about the bone screw such that a first surface of the washer is disposed about the seating portion of the nut and a retention portion is disposed within the recessed portion of the bone screw. The washer is configured to rotate about an axis substantially normal to a longitudinal axis of the bone screw. | 11-05-2009 |
20100042167 | ORTHOPAEDIC SCREWS - An orthopaedic screw having a plurality of regions, at least one of which may be porous. The orthopaedic screw includes a head, a tip and at least one thread. The porosity of the screw of the present invention can vary within the part or region, including changes in pore shape, size and density. These characteristics can vary along the length of the screw axis and/or radially (from the outer diameter to the axis). The orthopaedic screw may further include at least one solid region formed of any implantable polymer, reinforced polymer or metal. | 02-18-2010 |
20100305622 | Tapered thread root transition on cortical bone fastener - An orthopedic fastener is disclosed, with a cylindrical shank having pre-selected diameter, the shank also providing adjacent unthreaded and threaded portions. The threaded portion is configured to secure the orthopedic fastener into cortical bone. The shank further has a thread root transition zone providing a tapered thread root profile between the unthreaded and threaded portions. The thread root transition zone is positioned on the shank such that, when the orthopedic fastener is operably secured into a specimen of cortical bone, the thread root transition zone is located outside said specimen of cortical bone. | 12-02-2010 |
20110137355 | Systematic Displacement Bone Screw - The present invention is a systematic displacement bone screw having minor and major thread diameters that are constant instead of tapered. The crests at the tip of the screw are narrower than the crests near the screw head resulting in a smaller distance between the thread flanks, which displaces and/or compresses more bone matter. Because the major diameter remains constant, the diameter of the hole made by inserting the screw is consistent over the length of the screw allowing the screw to be adjusted without loosening. The systematic displacement screw with varying crest thicknesses also avoids the need to use a larger diameter screw in place of a removed screw during a repair procedure. Rather than increasing the size of the hole, the systematic displacement screw can be used for the both the original screw and the replacement screw. | 06-09-2011 |
20110224738 | BONE CONNECTOR WITH PIVOTABLE JOINT - System, including methods, apparatus, and kits, for connecting bones and/or bone portions using a bone connector with a pivotable joint. | 09-15-2011 |
20110313473 | SCREW FOR OSTEOSYNTHESIS AND ARTHRODESIS - The invention relates to a self-tapping and self-boring osteosynthesis screw for compressive orthopaedic surgery, characterised in that, in the bone engagement regions, at both the distal portion (A | 12-22-2011 |
20120029579 | BONE SCREW WITH MULTIPLE THREAD PROFILES FOR FAR CORTICAL LOCKING AND FLEXIBLE ENGAGEMENT TO A BONE - Osteosynthesis constructs for treating bone fractures and bone screws for use in such systems are disclosed. The bone screws include a threaded front section configured for engagement with cortical bone, a threaded mid-section and an unthreaded neck section configured for limited movement within the near cortex of the bone. Osteosynthesis constructs of the type disclosed promote secondary healing by allowing for substantially parallel motion at the near and far cortex within the effective motion range for callus formation. | 02-02-2012 |
20120185002 | SCREW WITH STRESS SENSING DEVICE - A screw with a stress sensing device is disclosed. The screw includes a main body, a coaxial member and a stress sensing member. The main body has a hollow threaded hole along its axle center, and the coaxial member is applied to be screw into the threaded hole. The coaxial member includes an elongated body and two threaded parts disposed on both ends of the elongated body. The two threaded parts are applied to engage with and screwed in the threaded hole, and thus the stress applied on the main body can also be applied on the elongated body. One of the two threaded parts has a groove. The stress sensing member is arranged on the elongated body, and the signal sensed by the stress sensing member can be obtained via a wire passing through the groove. | 07-19-2012 |
20120232599 | AWL SCREW FIXATION MEMBERS AND RELATED SYSTEMS - Provided are fixation members useful in fixing an implant to a bone. The fixation members include an awl tip so as to enable their secure installation by use of an awling motion, which in turn speeds the installation of the fixation members. | 09-13-2012 |
20120232600 | BONE SCREW - A bone screw comprises a threaded portion. The threaded portion has a first thread including a first front surface ( | 09-13-2012 |
20120265258 | Expanding Spinal Anchor - An anchor for a pedicle screw having an anchor body comprising a proximal end, a proximal portion, a distal portion, and a distal end, and a through-hole through the anchor body from the proximal end to the distal end. The through-hole defines a long axis of the anchor, and is provided with undersized female threads in the proximal portion and a reduced inner diameter in the distal portion. The reduced inner diameter causes expansion of at least the distal portion of the anchor body when a screw is inserted into the through-hole. The anchor is further provided with a plurality of ridges on an exterior surface of the anchor body, the ridges configured to reduce the likelihood of pullout when the anchor is inserted into a vertebra and a screw is inserted into the through-hole. | 10-18-2012 |
20120316607 | Bone Screw - A bone screw is provided having first and second threaded portions of different diameter separated by a middle portion that is unthreaded so that the bone screw may be inserted into a pair of adjacent bone fragments and used to compress the fragments together by driving the screw into a hole drilled in the fragments. An installation tool is also disclosed for threadably engaging one end of the bone screw and is used to initially drive the screw into the bone hole. Therafter, a screwdriver may be inserted through the tool and into engagement with a recess in the bone screw and may be used to drive the screw fully into the bone and to separate the bone screw from the installation tool. A method of installation is further provided. | 12-13-2012 |
20130066382 | BONE SCREW, IN PARTICULAR FOR OSTEOSYNTHESIS - A bone screw having a threaded proximal portion, a threaded median portion, and a threaded distal portion. The threaded proximal portion has a proximal thread with a constant diameter and a proximal pitch. The threaded median portion has a median thread with a constant diameter smaller than the diameter of the proximal thread and a median pitch that becomes increasingly smaller from a distal end of the threaded median portion towards a proximal end of the threaded median portion The threaded distal portion has a distal thread having a constant diameter that is smaller than the diameter of the median thread and a distal pitch that is larger than the median pitch at the distal end of the threaded median portion. | 03-14-2013 |
20130158610 | BONE GRAFT FIXATION SYSTEMS AND METHODS - Methods and devices are provided for securing a bone graft to a bone in a manner that ensures compression between the bone graft and bone. In one embodiment, a bone graft is positioned adjacent to a bone surface, a post is implanted in the bone, with the bone graft extending around a portion of the post, and a locking element is applied to the post to compress the bone graft into intimate contact with the bone. | 06-20-2013 |
20130190830 | BENT DIP FUSION SCREW - Devices and methods are disclosed for the fusion of joints (particularly finger joints or toe joints) in a bent (or angled) position. In certain embodiments, the device is pre-bent and inserted into the joint in its pre-bent configuration. Alternatively, the device may be configured to have a first position wherein it is bent and a second position wherein it is straight. In that case, the device is preferably straightened by inserting a K-wire through a cannula in the device, and the device can be inserted into the joint in its straight position. Once inserted, the device is permitted to move to its bent position, which moves the joint to a bent position. In one embodiment the device moves to its bent position when the K-wire is removed. | 07-25-2013 |
20130190831 | System and Method for Bone Fixation - A fixation system for coupling a first and a second portion of bone together. The fixation system includes a first fixation element, a second fixation element, and an interconnect. The first and second fixation elements include external surfaces configured to engage the first and second portions of bone, respectively, and a first and second mating surface, respectively. The interconnect includes a first and a second surface disposed at generally opposite ends, which are configured to engage the first and the second mating surfaces of the first and the second element, respectively, to form connections therebetween. At least one of the first mating surface, the second mating surface, the first surface, or the second surface is configured to deform when coupling the first fixation element, the second fixation element, or the interconnect. | 07-25-2013 |
20140107714 | Surgical mid-foot compression pin - The invention relates to a surgical mid-foot compression pin ( | 04-17-2014 |
20140200620 | IMPLANTABLE FIXTURE - A self-tapping fixture is implantable in a bone. The fixture extends generally longitudinally from an apical end to a distal end along a longitudinal axis L and has a periphery, the periphery comprises a first zone A extending away from the apical end to merge with a second zone B, the second zone B extending away from the first zone A to merge with a third zone C, the third zone C extending away from the second zone B to merge with a fourth zone D and the fourth zone D extending away from the third zone to terminate at the distal end of the fixture, and the third zone C is provided with a plurality of thread wraps each merging from the periphery and extending generally radially away therefrom to terminate at a generally rounded wrap ends. | 07-17-2014 |
20150105829 | BONE FIXATION DEVICE - A bone fixation element ( | 04-16-2015 |
20150289916 | BONE SCREWS HAVING MORE THAN THREE LEADS - A bone screw assembly, including: a bone screw having a head portion and a thread portion, wherein the thread portion includes an axial shaft and one of a quad lead thread or a penta lead thread disposed about the axial shaft; and, optionally, a rod retention member selectively coupled to the head portion of the bone screw. Optionally, the lead thread includes leads that originate at different points along the axial shaft. Optionally, the lead thread includes leads that terminate at different points along the axial shaft. Optionally, the axial shaft includes a first tapering portion proximate a tip of the axial shaft. Optionally, the axial shaft includes a second tapering portion proximate the tip of the axial shaft. Preferably, the second tapering portion tapers more steeply than the first tapering portion. Optionally, the axial shaft includes a reduced diameter portion proximate the head portion. Optionally, the axial shaft includes one or more tapering portions proximate the head portion. | 10-15-2015 |
20150297275 | IMPLANT/ANCHOR FOR CELLULAR AND VISCO-ELASTIC MATERIALS - An anchoring implant to be screwed into a hole and self-lock therein with secure stability. The implant, which may be used in dental, orthopedic or any of several non-medical applications, has a conically tapered profile with an aggressively-threaded, self-tapping apical end. A central region of the implant is formed with a plurality of burnishing edges each configured to apply a circumferentially sweeping compressive strain to the interior surface of the hole with a burnishing action while the implant is being screwed into position. A coronal end of the implant includes a corking feature to avert mushrooming around the perimeter of the hole. A central thread profile may extend through and intersect the burnishing edges to provide either enhanced self-tapping or enhanced corking functionality. The extreme coronal end comprises a platform for receiving an abutment or other fastening element via an internal connect feature. | 10-22-2015 |
20150366599 | Bone Implant - A bone implant includes: a body including a connection end and a drill end respectively on two ends thereof, with the body including a plurality of engagement sections between the connection end and the drill end, with a disengagement prevention section provided between two adjacent engagement sections, with each engagement section including a drilling thread disposed on an outer periphery of the body, with the drilling threads of the engagement sections having the same thread direction, with the disengagement prevention section including a coupling section on the outer periphery of the body, and with the disengagement prevention section having a maximum outer diameter smaller than a minimum outer diameter of each engagement section between the disengagement prevention section and the connection end; and an abutment seat mounted on the connection end of the body, with the abutment seat including a keying recess. | 12-24-2015 |
20160183992 | INTERNAL FIXATION DEVICE FOR BONE FRACTURES - An internal fixation device is adapted for fixing a first bone fracture to a second bone fracture. The internal fixation device includes: a shank adapted to extend into the first and second bone fractures and including a connecting segment that is made of a shape-memory alloy, and a first threaded segment that is connected to a first end of the connecting segment and that is adapted to be fixed in the first bone fracture; and a fixing unit adapted to fasten the second bone fracture to the first bone fracture. When environmental temperature is increased to a predetermined temperature, the connecting segment is shortened such that the fracture surfaces of the first and second bone fractures are 15 pressed closely against each other. | 06-30-2016 |